阅读说明：本技术 谷物干燥、烘干工艺 (Grain drying and baking process ) 是由 祝磊 于 2019-10-02 设计创作，主要内容包括：本发明提供了谷物干燥、烘干工艺,其步骤在于：首先,用户将粮食由一级预热机构的输入端倾倒至其内部,一级预热机构对粮食进行预热处理；而后,预热处理后将粮食输送至管链输送机构内,管链输送机构循环往复运转并且将粮食逐步输送至二级烘干机构；接着,二级烘干机构由下至上鼓入热空气并且使预热后的粮食悬浮翻滚并且朝向其输入端运动,在此过程中,对粮食进行均匀烘干,烘干后的粮食将由二级烘干机构的输出端进入至冷却机构的输入端；最后,冷却机构对烘干后的粮食进行冷却降温,最后,冷却机构将干燥常温的粮食输出至堆放点。(The invention provides a grain drying and drying process, which comprises the following steps: firstly, a user dumps grains into the primary preheating mechanism from the input end of the primary preheating mechanism, and the primary preheating mechanism preheats the grains; then, after preheating treatment, conveying the grains into a pipe chain conveying mechanism, wherein the pipe chain conveying mechanism circularly and repeatedly operates and gradually conveys the grains to a secondary drying mechanism; then, the secondary drying mechanism blows hot air from bottom to top and enables the preheated grains to be suspended, rolled and moved towards the input end of the secondary drying mechanism, in the process, the grains are uniformly dried, and the dried grains enter the input end of the cooling mechanism from the output end of the secondary drying mechanism; and finally, cooling the dried grains by the cooling mechanism, and outputting the dried grains at normal temperature to a stacking point by the cooling mechanism.)

1. A process for drying and baking grains comprises the following steps:

A feed preheating stage;

S1: the user pours the grain into the first-stage preheating mechanism from the input end of the first-stage preheating mechanism, and the first-stage preheating mechanism preheats the grain;

the primary preheating mechanism comprises a vertical preheating funnel with openings at the upper end and the lower end, the opening size of the preheating funnel is gradually increased from bottom to top along the vertical direction, a circular sealing plate which is detachably connected and matched is coaxially and fixedly arranged at the large opening of the preheating funnel, a feeding funnel is coaxially arranged above the sealing plate and is fixedly connected with a mounting frame, the opening size of the feeding funnel is gradually increased from bottom to top, a connecting cylinder with openings at the two ends is coaxially penetrated and arranged on the sealing plate, the connecting cylinder is rotationally connected and matched with the sealing plate, the top end of the connecting cylinder is in butt joint with the opening at the lower end of the feeding funnel and is rotationally connected and matched with the opening at the lower end of the feeding funnel, and the bottom end;

During the working process of the primary preheating mechanism, a user pours grains into the preheating hopper, the power driving part drives the connecting cylinder to rotate around the axial axis of the connecting cylinder, the grains fall between the first rotating plate and the second rotating plate through the connecting cylinder under the action of self gravity, meanwhile, the connecting cylinder drives the first rotating plate and the second rotating plate to synchronously rotate, the grain positioned between the first rotating plate and the second rotating plate generates centrifugal motion, and uniformly sprinkled on the inner wall of the preheating funnel under the guiding action of the guide plate, grains slide to the bottom of the preheating funnel from the top of the inner wall of the preheating funnel, in the process, the preheating rod generates heat and transfers the heat to the preheating funnel, the preheating funnel performs uniform preheating treatment on grains which roll down along the interior of the preheating funnel, and the grains after preheating treatment enter the input end of the pipe chain conveying mechanism from the output end of the preheating funnel;

(II) a conveying stage;

S2: after preheating treatment, conveying the grains into a pipe chain conveying mechanism, wherein the pipe chain conveying mechanism circularly and repeatedly operates and gradually conveys the grains to a secondary drying mechanism;

The pipe chain conveying mechanism comprises a first mounting shell and a second mounting shell which are fixedly connected with a mounting frame and are airtight, the first mounting shell and the second mounting shell are coplanar and arranged at intervals, one end face, away from each other, of the first mounting shell and the second mounting shell is respectively provided with an arc-shaped face, one end face, close to each other, of the first mounting shell and the second mounting shell is respectively provided with a rectangular mounting plane, the width direction of the rectangular mounting plane is vertically arranged, one end, along the length direction, of each mounting plane is provided with a transition pipeline for connecting the first mounting shell and the second mounting shell, one end, away from the transition pipeline, of the mounting plane on the first mounting shell is provided with a T-shaped tee input pipeline, the input pipeline comprises a horizontal section and a vertical section which are mutually connected, the axial direction of the horizontal section of the input pipeline is parallel to the axial direction of the transition pipeline, the diameters of the horizontal section of the input pipeline are equal, The other end of the second-stage drying mechanism is connected and communicated with the second mounting shell through a second-stage drying mechanism, and the input end of the second-stage drying mechanism is positioned between the input pipeline and the second mounting shell;

the pipe chain conveying mechanism further comprises a driving drive plate and a driven drive plate, the driving drive plate and the driven drive plate are rotatably arranged in the first mounting shell, the axial directions of the driving drive plate and the driven drive plate are parallel to the axial direction of the connecting cylinder, a conveying chain for connecting the driving drive plate and the driven drive plate is arranged between the driving drive plate and the driven drive plate, the conveying chain is meshed with the driving drive plate and the driven drive plate and is used for transmitting the power of the driving drive plate to the driven drive plate, the conveying chain sequentially bypasses the driving drive plate, passes through the horizontal section of the input pipeline, passes through the input end of the secondary drying mechanism, bypasses the driven drive plate and passes through the transition channel to form a closed circulation loop, a plurality of circular conveying plates matched with the transition pipeline are arranged on the conveying chain, and the conveying plates are arranged;

pipe chain conveying mechanism is at the working process, grain after preheating will pass through the vertical section landing of input pipeline to its horizontal segment, at this moment, power drive part is with power transmission to initiative driver plate and drive initiative driver plate anticlockwise rotation, initiative driver plate and driven driver plate mutually support, make conveying chain anticlockwise direction circulation operation, the conveying chain will drive delivery board synchronous operation, the delivery board will preheat grain propelling movement to the input of second grade stoving mechanism in, carry out gas suspension stoving processing by second grade stoving mechanism to the grain after preheating afterwards.

2. The process for drying and baking the grains according to claim 1, wherein a first rotating plate is coaxially fixed and sleeved on the outer circumferential surface of the bottom end of the connecting cylinder, a second rotating plate with the same diameter as the first rotating plate is coaxially arranged below the first rotating plate, a rectangular guide plate for connecting the first rotating plate and the second rotating plate is arranged between the first rotating plate and the second rotating plate, the width direction of the guide plate is parallel to the axial direction of the connecting cylinder, the included angle between the length direction of the guide plate and the radial direction of the second rotating plate is an acute angle, the acute angle is larger than 15 degrees and smaller than 45 degrees, one end of the guide plate along the length direction is flush with the outer circumferential surface of the second rotating plate, the other end of the guide plate is flush with the outer circumferential surface of the connecting cylinder.

3. The process for drying and baking grains according to claim 2, wherein a stirring shaft is coaxially arranged in the connecting cylinder, the lower end of the stirring shaft is fixedly connected with the second rotating plate, and the upper end of the stirring shaft extends into the feeding hopper.

4. the process for drying and baking the grains according to claim 3, wherein a conical cover matched with the preheating funnel is fixedly sleeved outside the preheating funnel, a preheating rod attached to the preheating funnel is embedded on the inner wall of the conical cover and used for generating heat and transferring the heat to the preheating funnel, the preheating rod is attached to the bottom of the preheating funnel from the top of the preheating funnel, the preheating funnel is made of a material with good heat conduction performance, and the preheating rod is provided with a plurality of conical covers and is arranged in an array mode along the circumferential direction of the preheating funnel.

5. the process of claim 1, wherein a storage chamber is formed between two adjacent conveyor plates, and the tube chain conveyor receives the preheated grains and temporarily stores the grains in the storage chamber.

6. the process of drying and roasting the grains according to claim 5, wherein the conveying chain is provided with an annular chain which is positioned between two adjacent conveying plates and is positioned at the center, and a plurality of teeth which protrude outwards are arrayed on the circumferential direction of the driving drive plate/driven drive plate; and the conveying chain is matched with the driving drive plate/the driven drive plate, the conveying plates are positioned in the groove formed between two adjacent teeth, and the tip parts of the teeth are embedded into the annular chain between two adjacent conveying plates.

7. the process for drying and baking the grains according to claim 3 or 6, wherein the power driving part comprises a second motor fixedly mounted on the mounting frame and a power main shaft rotatably mounted on the mounting frame, the axial direction of an output shaft of the second motor and the axial direction of the power main shaft are both vertically arranged, the power main shaft movably penetrates through the first mounting shell and is coaxially and fixedly connected with the driving drive plate, a first belt transmission component used for connecting the first motor and the second motor and transmitting the power of the output shaft of the second motor to the power main shaft is arranged between the output shaft of the second motor and the power main shaft, a second belt transmission component used for connecting the first motor and the second motor and transmitting the power of the power main shaft to the connecting cylinder is arranged between the power main shaft and the connecting cylinder, the first belt transmission component.

8. the process of drying and drying grain as claimed in claim 7, wherein the belt driving assembly includes a first driving pulley coaxially fixed on the output shaft of the second motor, a first driven pulley coaxially fixed on the power shaft, and a first belt disposed between the first driving pulley and the first driven pulley for connecting the first driving pulley and the first driven pulley, the first driving pulley has a diameter smaller than that of the first driven pulley, the second belt driving assembly includes a second driving pulley coaxially fixed on the power shaft, a second driven pulley coaxially fixed on the connecting cylinder, and a second belt disposed between the second driving pulley and the second driven pulley for connecting the second driving pulley and the second driven pulley, and the second driving pulley has a diameter larger than that of the second driven pulley.

Technical Field

The invention relates to a grain dryer, in particular to a grain drying and drying process.

background

before grain is stored, the grain needs to be dried, the moisture content in grain particles is reduced, the phenomena that the grain is deteriorated, mildewed and rotted and the like due to heat generated during storage and accumulation of the grain are avoided, the moisture content in the grain directly determines whether the grain can be stored safely for a long time, therefore, the grain drying treatment is particularly important, at present, grain drying equipment is adopted for drying the grain in a grain station/grain depot, and the common piece of the grain drying equipment has certain defects, such as complex structure, high cost, incapability of uniformly drying the grain particles and high energy consumption; for farmers, grain drying is also a difficult problem, the grain drying is mainly realized by natural airing and air drying, so that a large field is needed to spread the grain, the labor intensity is high, the quality of the grain is difficult to guarantee in rainy days, and in order to overcome the defects and the problems, the invention relates to a gas suspension grain drying method which has the advantages of ingenious structure, simple principle, low cost, convenience for popularization and use and capability of uniformly drying grain particles.

Disclosure of Invention

in order to overcome the defects of the prior art, the invention aims to provide the air suspension grain drying method which is ingenious in structure, simple in principle, low in cost, convenient to popularize and use and capable of uniformly drying grain particles.

In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows.

A process for drying and baking grains comprises the following steps:

A feed preheating stage;

S1: the user pours the grain into the first-stage preheating mechanism from the input end of the first-stage preheating mechanism, and the first-stage preheating mechanism preheats the grain;

The primary preheating mechanism comprises a vertical preheating funnel with openings at the upper end and the lower end, the opening size of the preheating funnel is gradually increased from bottom to top along the vertical direction, a circular sealing plate which is detachably connected and matched is coaxially and fixedly arranged at the large opening of the preheating funnel, a feeding funnel is coaxially arranged above the sealing plate and is fixedly connected with a mounting frame, the opening size of the feeding funnel is gradually increased from bottom to top, a connecting cylinder with openings at the two ends is coaxially penetrated and arranged on the sealing plate, the connecting cylinder is rotationally connected and matched with the sealing plate, the top end of the connecting cylinder is in butt joint with the opening at the lower end of the feeding funnel and is rotationally connected and matched with the opening at the lower end of the feeding funnel, and the bottom end;

The connecting cylinder is characterized in that a first rotating plate is coaxially fixedly sleeved on the outer circular surface of the bottom end of the connecting cylinder, a second rotating plate with the same diameter as the first rotating plate is coaxially arranged below the first rotating plate, a rectangular guide plate for connecting the first rotating plate and the second rotating plate is arranged between the first rotating plate and the second rotating plate, the width direction of the guide plate is parallel to the axial direction of the connecting cylinder, an included angle between the length direction of the guide plate and the radial direction of the second rotating plate is an acute angle, the acute angle is larger than 15 degrees and smaller than 45 degrees, one end of the guide plate along the length direction is flush with the outer circular surface of the second rotating plate, the other end of the guide plate is flush with the outer circular surface;

A stirring shaft is coaxially arranged in the connecting cylinder, the lower end of the stirring shaft is fixedly connected with the second rotating plate, and the upper end of the stirring shaft extends into the feeding hopper;

The preheating funnel is characterized in that a conical cover matched with the preheating funnel is fixedly sleeved outside the preheating funnel, a preheating rod attached to the preheating funnel is embedded in the inner wall of the conical cover, the preheating rod is used for generating heat and transferring the heat to the preheating funnel, the preheating rod is attached to the bottom of the preheating funnel from the top of the preheating funnel, the preheating funnel is made of a material with good heat conduction performance, and a plurality of preheating rods are arranged in an array mode along the circumferential direction of the preheating funnel;

During the working process of the primary preheating mechanism, a user pours grains into the preheating hopper, the power driving part drives the connecting cylinder to rotate around the axial axis of the connecting cylinder, the grains fall between the first rotating plate and the second rotating plate through the connecting cylinder under the action of self gravity, meanwhile, the connecting cylinder drives the first rotating plate and the second rotating plate to synchronously rotate, the grain positioned between the first rotating plate and the second rotating plate generates centrifugal motion, and uniformly sprinkled on the inner wall of the preheating funnel under the guiding action of the guide plate, grains slide to the bottom of the preheating funnel from the top of the inner wall of the preheating funnel, in the process, the preheating rod generates heat and transfers the heat to the preheating funnel, the preheating funnel performs uniform preheating treatment on grains which roll down along the interior of the preheating funnel, and the grains after preheating treatment enter the input end of the pipe chain conveying mechanism from the output end of the preheating funnel;

(II) a conveying stage;

S2: after preheating treatment, conveying the grains into a pipe chain conveying mechanism, wherein the pipe chain conveying mechanism circularly and repeatedly operates and gradually conveys the grains to a secondary drying mechanism;

the pipe chain conveying mechanism comprises a first mounting shell and a second mounting shell which are fixedly connected with a mounting frame and are airtight, the first mounting shell and the second mounting shell are coplanar and arranged at intervals, one end face, away from each other, of the first mounting shell and the second mounting shell is respectively provided with an arc-shaped face, one end face, close to each other, of the first mounting shell and the second mounting shell is respectively provided with a rectangular mounting plane, the width direction of the rectangular mounting plane is vertically arranged, one end, along the length direction, of each mounting plane is provided with a transition pipeline for connecting the first mounting shell and the second mounting shell, one end, away from the transition pipeline, of the mounting plane on the first mounting shell is provided with a T-shaped tee input pipeline, the input pipeline comprises a horizontal section and a vertical section which are mutually connected, the axial direction of the horizontal section of the input pipeline is parallel to the axial direction of the transition pipeline, the diameters of the horizontal section of the input pipeline are equal, The other end of the second-stage drying mechanism is connected and communicated with the second mounting shell through a second-stage drying mechanism, and the input end of the second-stage drying mechanism is positioned between the input pipeline and the second mounting shell;

the pipe chain conveying mechanism further comprises a driving drive plate and a driven drive plate, the driving drive plate and the driven drive plate are rotatably arranged in the first mounting shell, the axial directions of the driving drive plate and the driven drive plate are parallel to the axial direction of the connecting cylinder, a conveying chain for connecting the driving drive plate and the driven drive plate is arranged between the driving drive plate and the driven drive plate, the conveying chain is meshed with the driving drive plate and the driven drive plate and is used for transmitting the power of the driving drive plate to the driven drive plate, the conveying chain sequentially bypasses the driving drive plate, passes through the horizontal section of the input pipeline, passes through the input end of the secondary drying mechanism, bypasses the driven drive plate and passes through the transition channel to form a closed circulation loop, a plurality of circular conveying plates matched with the transition pipeline are arranged on the conveying chain, and the conveying plates are arranged;

During the working process of the pipe chain conveying mechanism, preheated grains slide to the horizontal section of the input pipeline through the vertical section, at the moment, the power driving part transmits power to the driving drive plate and drives the driving drive plate to rotate anticlockwise, the driving drive plate and the driven drive plate are matched with each other, so that the conveying chain circularly rotates anticlockwise, the conveying chain drives the conveying plates to synchronously rotate, the conveying plates push the preheated grains into the input end of the secondary drying mechanism, and then the secondary drying mechanism performs air suspension drying treatment on the preheated grains;

(III) drying;

S3: the secondary drying mechanism blows hot air from bottom to top, enables the preheated grains to be suspended, rolled and moved towards the input end of the secondary drying mechanism, and uniformly dries the grains in the process, and the dried grains enter the input end of the cooling mechanism from the output end of the secondary drying mechanism;

the secondary drying mechanism comprises a vertically arranged suspension tank, the axial direction of the suspension tank is parallel to the axial direction of the preheating funnel, the suspension tank is composed of an upper tank body and a lower tank body which are fixedly connected from top to bottom, the upper tank body is positioned above the lower tank body, the lower tank body is positioned between an input pipeline horizontal section and a mounting shell II, a butt joint pipeline I for connecting and connecting the lower tank body and the input pipeline horizontal section is arranged between the lower tank body and the input pipeline horizontal section, a butt joint pipeline pipe for connecting and connecting the lower tank body and the mounting shell II is arranged between the lower tank body and the input pipeline horizontal section, the butt joint pipeline I and the butt joint pipeline II are coaxial with the input pipeline horizontal section and are arranged in an equal diameter mode, and the butt joint;

the second-stage drying mechanism also comprises an air blower which is arranged below the suspension tank and is fixedly connected with the mounting frame, the output end of the air blower is communicated with the lower end of the lower tank body through a pipeline, and the pipeline is provided with a heater for heating air flowing through the pipeline, the lower end of the lower tank body is provided with a conical structure, the size of an opening formed by the conical surface is gradually increased from bottom to top, the upper opening of the lower tank body is coaxially provided with a ring-shaped first guide plate, a rectangular second guide plate for connecting the first guide plate and the inner wall of the lower tank body is arranged between the first guide plate and the inner wall of the lower tank body, the second guide plate is vertically arranged in the height direction and radially arranged along the first guide plate in the width direction, a plurality of second guide plates are arranged in an array manner along the circumferential direction of the first guide plate, the first butt joint pipeline is communicated with the inner circular surface of the first guide plate, and the second butt joint pipeline is communicated with the inner circular surface of the second guide plate;

the secondary drying mechanism further comprises a rectangular discharge channel which is vertically arranged, the side surface of the discharge channel close to the top is communicated with the upper end of the upper tank body through a pipeline, an exhaust port which is arranged opposite to the output end of the pipeline is formed in the discharge channel, a first sealing plate matched with the exhaust port and provided with a plurality of fine holes is arranged on the exhaust port, the bottom of the discharge channel is communicated with the cooling mechanism, the upper end of the upper tank body is provided with a conical structure, and the size of an opening of the conical surface is gradually reduced from bottom to top;

in the working process of the secondary drying mechanism, the air blower and the heater are started and matched with each other to blow hot air into the suspension tank, the hot air is guided out from bottom to top in the suspension tank through the exhaust port, in the process, when the conveying plate pushes preheated grains to the middle of the guide plate, the hot air overcomes the gravity action of the grains to enable the grains to be suspended and vertically and upwardly slowly move, in the process, the grains roll and turn over, the hot air comprehensively dries the grains, and the dried grains enter the discharge channel and are output to the cooling mechanism through the discharge channel;

(IV) cooling and discharging;

s4: the cooling mechanism cools the dried grains, and finally, the cooling mechanism outputs the dried grains at normal temperature to a stacking point;

the cooling mechanism comprises a rectangular cooling channel which is arranged obliquely below the discharge channel and is vertically arranged, a lead-in channel which is obliquely arranged and is used for connecting and communicating the upper end of the cooling channel and the output end of the discharge channel is arranged between the upper end of the cooling channel and the output end of the discharge channel, the lower end of the cooling channel is communicated with a lead-out channel which is obliquely arranged, the output end of the lead-out channel points to the stacking point, the cooling device comprises a cooling channel, a mounting cylinder, a sealing plate II, a fixing frame, a motor I, a cold air fan and a fan motor, wherein the mounting cylinder is axially and horizontally arranged on one side surface of the cooling channel, openings at two ends of the mounting cylinder are arranged and communicated with the cooling channel, a heat dissipation port communicated with the cooling channel is formed in one side surface of the cooling channel, which is away from the mounting cylinder, the opening of the heat dissipation port is provided with the sealing plate II which is matched with the heat dissipation port and is provided with a plurality of pores, the mounting cylinder is internally provided with;

V-shaped diffusion plates which are arranged in a staggered mode are fixedly installed in the leading-in pipeline, openings of the diffusion plates are arranged downwards along the inclined direction of the leading-in pipeline, an opening is formed in the upper end face of the leading-in pipeline, a cover plate used for carrying out density on the leading-in pipeline is arranged at the opening, and the cover plate is detachably connected and matched with the leading-in pipeline;

in the working process of the cooling mechanism, the first motor is started, the first motor drives the cold air fan to rotate and blows cold air into the cooling channel, falling grains in the cooling channel are cooled physically, heat is dissipated to the outside through the heat dissipation port, and the cooled grains fall to a stacking point under the guidance of the guide channel.

as a further optimization or improvement of the present solution.

The power driving part comprises a second motor fixedly installed on the installation frame, a power main shaft installed on the installation frame is rotated, the axial direction of an output shaft of the second motor is vertically arranged with the axial direction of the power main shaft, the power main shaft movably penetrates through the first installation shell and the first driving plate, a first belt transmission component used for connecting the first motor and the second motor and used for transmitting the power of the output shaft of the second motor to the power main shaft is arranged between the second motor and the power main shaft, a second belt transmission component used for connecting the first motor and the second motor and used for transmitting the power of the power main shaft to the connecting cylinder is arranged between the power main shaft and the connecting cylinder, the first belt transmission component is in speed reduction transmission, and the.

as a further optimization or improvement of the present solution.

the belt transmission assembly comprises a first driving belt wheel and a first driven belt wheel, wherein the first driving belt wheel and the first driven belt wheel are coaxially and fixedly sleeved on an output shaft of a second motor, the first driven belt wheel and the first driven belt wheel are arranged on a power main shaft, the first driving belt wheel and the first driven belt wheel are arranged between the first driving belt wheel and the first driven belt wheel and are used for connecting the first driving belt wheel and the first driven belt wheel, the diameter of the first driving belt wheel is smaller than that of the first driven belt wheel, the second belt transmission assembly comprises a second driving belt wheel and a second driven belt wheel, the second driving belt wheel and the second driven belt wheel are coaxially and fixedly sleeved on a connecting cylinder, the second driving belt.

Compared with the prior art, the grain drying device has the advantages of ingenious structure, simple principle, low cost and convenience in popularization and use, and adopts a two-stage drying procedure to dry grains, wherein the first stage is preheating, the second stage is drying, and the grains are overturned and suspended by the upward-blowing hot air until being discharged, so that the grains can be uniformly dried.

drawings

fig. 1 is a schematic view of the overall structure of the present invention.

fig. 2 is a schematic view of the overall structure of the present invention.

fig. 3 is a schematic view of the overall structure of the present invention.

Fig. 4 is a partial structural schematic diagram of the present invention.

fig. 5 is a schematic structural diagram of the primary preheating mechanism.

FIG. 6 is a schematic view of the primary preheat mechanism.

Fig. 7 is a partial structural schematic diagram of the primary preheating mechanism.

Fig. 8 is a partial cross-sectional view of a primary preheating mechanism.

fig. 9 is a partial cross-sectional view of a primary preheating mechanism.

Fig. 10 is a connection diagram of the pipe chain conveying mechanism and the primary preheating mechanism and the secondary drying mechanism.

fig. 11 is a schematic view of the internal structure of the pipe chain conveying mechanism.

Fig. 12 is a schematic structural view of the pipe chain conveying mechanism.

fig. 13 is a schematic structural diagram of the secondary drying mechanism.

Fig. 14 is a partial structural schematic diagram of the secondary drying mechanism.

Fig. 15 is an internal structure diagram of the secondary drying mechanism.

fig. 16 is a connection diagram of the cooling mechanism and the secondary drying mechanism.

fig. 17 is a schematic view of the internal structure of the cooling mechanism.

Fig. 18 is a schematic view of the internal structure of the cooling mechanism.

Fig. 19 is a schematic structural view of a power drive unit.

Detailed Description

A process for drying and baking grains comprises the following steps:

a feed preheating stage;

S1: the user dumps the grains from the input end of the primary preheating mechanism 200 into the primary preheating mechanism 200, and the primary preheating mechanism 200 preheats the grains;

the primary preheating mechanism 200 comprises a vertical preheating funnel 201 with openings at the upper end and the lower end, the opening size of the preheating funnel 201 is gradually increased from bottom to top along the vertical direction, a circular sealing plate 202 which is detachably matched with the opening of the preheating funnel 201 is coaxially and fixedly arranged at the large opening of the preheating funnel 201, a feeding funnel 203 is coaxially arranged above the sealing plate 202, the feeding funnel 203 is fixedly connected with the mounting frame 100, the opening size of the feeding funnel 203 is gradually increased from bottom to top, a connecting cylinder 204 with openings at the two ends is coaxially arranged on the sealing plate 202 in a penetrating manner, the connecting cylinder 204 is matched with the sealing plate 202 in a rotating connection manner, the top end of the connecting cylinder 204 is in butt joint with the opening at the lower end of the feeding funnel 203 and is matched with the opening at the two;

a first rotating plate 205a is coaxially and fixedly sleeved on the outer circular surface of the bottom end of the connecting cylinder 204, a second rotating plate 205b with the same diameter as the first rotating plate 205a is coaxially arranged below the first rotating plate 205a, a rectangular guide plate 206 for connecting the first rotating plate 205a and the second rotating plate 205b is arranged between the first rotating plate 205a and the second rotating plate 205b, the width direction of the guide plate 206 is parallel to the axial direction of the connecting cylinder 204, an included angle between the length direction of the guide plate 206 and the radial direction of the second rotating plate 205b is an acute angle, the acute angle is larger than 15 degrees and smaller than 45 degrees, one end of the guide plate 206 in the length direction is flush with the outer circular surface of the second rotating plate 205b, the other end of the guide plate 206 is flush with the outer circular surface of the;

A stirring shaft 207 is coaxially arranged in the connecting cylinder 204, the lower end of the stirring shaft 207 is fixedly connected with the second rotating plate 205b, and the upper end of the stirring shaft extends into the feeding hopper 203;

The preheating funnel 201 is fixedly sleeved with a conical cover 208 matched with the preheating funnel 201 in a sleeved mode, a preheating rod 209 attached to the preheating funnel 201 is embedded in the inner wall of the conical cover 208, the preheating rod 209 is used for generating heat and transferring the heat to the preheating funnel 201, the preheating rod 209 is attached to the bottom of the preheating funnel 201 from the top of the preheating funnel 201, the preheating funnel 201 is made of a material with good heat conduction performance, and the preheating rods 209 are arranged in a plurality and are arranged in an array mode along the circumferential direction of the preheating funnel 201;

in the working process of the primary preheating mechanism 200, a user pours grains into the preheating funnel 201, the power driving part 600 drives the connecting cylinder 204 to rotate around the axial axis of the connecting cylinder, the grains fall between the first rotating plate 205a and the second rotating plate 205b through the connecting cylinder 204 under the action of self gravity, meanwhile, the connecting cylinder 204 drives the first rotating plate 205a and the second rotating plate 205b to rotate synchronously, so that the grain positioned between the first rotating plate 205a and the second rotating plate 205 generates centrifugal motion, and uniformly sprinkled on the inner wall of the preheating hopper 201 under the guiding action of the guiding plate 206, the grains will slide from the top of the inner wall of the preheating hopper 201 to the bottom thereof, in the process, the preheating rod 209 generates heat and transfers the heat to the preheating funnel 201, the preheating funnel 210 performs uniform preheating treatment on the grains rolling down along the interior of the preheating funnel 210, and the preheated grains enter the input end of the pipe chain conveying mechanism 300 from the output end of the preheating funnel 210;

(II) a conveying stage;

S2: after the preheating treatment, the grains are conveyed into the pipe chain conveying mechanism 300, the pipe chain conveying mechanism 300 circularly and repeatedly operates and gradually conveys the grains to the secondary drying mechanism 400;

The pipe chain conveying mechanism 300 comprises a first mounting shell 301 and a second mounting shell 302 which are fixedly connected with the mounting frame 100 and are sealed, the first mounting shell 301 and the second mounting shell 301 are coplanar and are arranged at intervals, the first mounting shell 301 and the second mounting shell 302 are far away from one end face and are both arranged into an arc-shaped face, the first mounting shell 301 and the second mounting shell 302 are close to one end face and are both provided with rectangular mounting planes which are vertically arranged in the width direction, one ends of the two mounting planes in the length direction are provided with transition pipelines 304 for connecting and connecting the first mounting shell 301 and the second mounting shell 302, one ends of the mounting planes on the first mounting shell 301, which are far away from the transition pipelines 304 in the length direction, are provided with T-shaped tee input pipelines 304, the input pipelines 304 comprise horizontal sections and vertical sections which are mutually communicated, the axial direction of the horizontal sections of the input pipelines 304 is parallel to the axial direction of the transition pipelines 303, the diameters, one end of the horizontal section of the input pipeline 304 is connected and communicated with the first mounting shell 301, the other end of the horizontal section of the input pipeline is connected and communicated with the second mounting shell 302 through the second-stage drying mechanism 400, and the input end of the second-stage drying mechanism 400 is positioned between the input pipeline 304 and the second mounting shell 302;

The pipe chain conveying mechanism 300 further comprises a driving dial 305 rotatably arranged in the first mounting shell 301 and a driven dial 306 rotatably arranged in the second mounting shell 302, the axial directions of the driving dial 305 and the driven dial 306 are both parallel to the axial direction of the connecting cylinder 204, a conveying chain 307 for connecting the driving dial 305 and the driven dial 306 is arranged between the driving dial 305 and the driven dial 306, the conveying chain 307 is engaged with the driving dial 305 and the driven dial 306 and is used for transmitting the power of the driving dial 305 to the driven dial 306, the conveying chain 307 sequentially bypasses the driving dial 305 and passes through the horizontal section of the input pipeline 304, the input end of the secondary drying mechanism 400 bypasses the driven dial 306 and passes through the transition channel 303 to form a closed circulation loop, a circular conveying plate 308 matched with the transition channel 303 is arranged on the conveying chain 307, and a plurality of conveying plates 308 are arranged at equal intervals along the circulation running direction of the conveying chain 307;

During the operation of the pipe chain conveying mechanism 300, the preheated grains slide to the horizontal section of the input pipeline 304 through the vertical section, at this time, the power driving part 600 transmits power to the driving dial 305 and drives the driving dial 305 to rotate counterclockwise, the driving dial 305 and the driven dial 306 are matched with each other, so that the conveying chain 307 circularly rotates counterclockwise, the conveying chain 307 drives the conveying plate 308 to synchronously rotate, the conveying plate 308 pushes the preheated grains into the input end of the secondary drying mechanism 400, and then the secondary drying mechanism 400 performs air suspension drying treatment on the preheated grains;

(III) drying;

s3: the secondary drying mechanism 400 blows hot air from bottom to top, and enables the preheated grains to suspend and roll and move towards the input end of the secondary drying mechanism, in the process, the grains are uniformly dried, and the dried grains enter the input end of the cooling mechanism 500 from the output end of the secondary drying mechanism 400;

the secondary drying mechanism 400 comprises a vertically arranged suspension tank 401, the axial direction of the suspension tank 401 is parallel to the axial direction of the preheating funnel 201, the suspension tank 401 is composed of an upper tank body 401a and a lower tank body 401b which are fixedly connected from top to bottom, the upper tank body 401a is positioned above the lower tank body 401b, the lower tank body 401a is positioned between the horizontal section of the input pipeline 304 and the second mounting shell 302, a first butt joint pipeline 407a for connecting and connecting the lower tank body 401a and the input pipeline 304 is arranged between the horizontal section of the lower tank body 401b and the input pipeline 304, a second butt joint pipeline 407b for connecting and connecting the lower tank body 401b and the second mounting shell 302 is arranged between the lower tank body 401b and the second mounting shell 302, the first butt joint pipeline 407a and the second butt joint pipeline 407b are coaxial with the horizontal section of the input pipeline 304 and are arranged in an equal diameter;

The secondary drying mechanism 400 further comprises a blower 402 which is arranged below the suspension tank 401 and fixedly connected with the mounting frame 100, the output end of the blower 402 is communicated with the lower end of the lower tank 401b through a pipeline, a heater 403 for heating air flowing through the pipeline is arranged on the pipeline, the lower end of the lower tank 401b is provided with a conical structure, the opening size formed by the conical surface is gradually increased from bottom to top, an annular guide plate one 406a is coaxially arranged in the opening at the upper end of the lower tank 401b, a rectangular guide plate two 406b for connecting the guide plate one 406a and the lower tank 401b is arranged between the guide plate one 406a and the inner wall of the lower tank 401b, the guide plate two 406b are vertically arranged in the height direction and radially arranged along the guide plate one 406a in the width direction, the guide plate two 406b are arranged in an array manner along the circumferential direction where the guide plate one 406a is located, the butt joint pipeline one 407b is communicated with, The second butting pipeline 407b is communicated with the inner circular surface of the second flow guide plate 406 a;

the secondary drying mechanism 400 further comprises a rectangular discharge channel 404 which is vertically arranged, the side surface of the discharge channel 404 close to the top is communicated with the upper end of the upper tank body 401a through a pipeline, an exhaust port 405 which is arranged opposite to the output end of the pipeline is formed in the discharge channel 404, a first seal plate matched with the exhaust port 405 and provided with a plurality of fine holes is arranged on the exhaust port 405, the bottom of the discharge channel 404 is communicated with the cooling mechanism 500, the upper end of the upper tank body 401a is provided with a conical structure, and the opening size of the conical surface is gradually reduced from bottom to top;

in the working process of the secondary drying mechanism 400, the air blower 402 and the heater 403 are started and matched with each other to blow hot air into the suspension tank 401, the hot air is guided out from bottom to top in the suspension tank 401 and from the exhaust port 405, in the process, when the conveying plate 308 pushes the preheated grains to the middle of the first guide plate 406a, the hot air overcomes the gravity action of the grains to enable the grains to suspend and move slowly vertically upwards, in the process, the grains roll and turn over, the hot air performs all-dimensional drying treatment on the grains, and the dried grains enter the discharge channel 404 and are output to the cooling mechanism 500 through the discharge channel 404;

(IV) cooling and discharging;

S4: the cooling mechanism 500 cools the dried grains, and finally, the cooling mechanism 500 outputs the dried grains at normal temperature to a stacking point;

the cooling mechanism 500 comprises a rectangular cooling channel 501 which is arranged obliquely below the discharge channel 404 and is vertically arranged, an introduction channel 501 which is obliquely arranged and is used for connecting and communicating the upper end of the cooling channel 501 and the output end of the discharge channel 404 is arranged between the upper end of the cooling channel 501 and the output end of the discharge channel 404, the lower end of the cooling channel 501 is communicated with a guide-out channel 503 which is obliquely arranged, the output end of the guide-out channel 503 points to a stacking point, an axial horizontally-arranged mounting cylinder 505 is arranged on one side face of the cooling channel 501, openings at two ends of the mounting cylinder 505 are arranged and communicated with the cooling channel 501, a heat dissipation port 504 communicated with the mounting cylinder is formed in one side face of the cooling channel 501, which is far away from the mounting cylinder 505, a sealing plate II matched with the opening of the heat dissipation port 504 and provided with a plurality of pores is arranged at the opening of the heat dissipation port, a fixing frame 506 is arranged in the mounting cylinder 505, a motor I507 is fixedly mounted on the fixing frame 506, a cold air fan 508 is coaxially connected and arranged at the output end of the motor I507, and the cold air;

V-shaped diverging plates 502b which are arranged in a staggered manner are fixedly arranged in the introducing pipeline 502, openings of the diverging plates 502b are arranged downwards along the inclined direction of the introducing pipeline 502, an opening is formed in the upper end face of the introducing pipeline 502, a cover plate 502a for performing density on the introducing pipeline 502 is arranged at the opening, and the cover plate 502a is detachably connected and matched with the introducing pipeline 502;

in the working process of the cooling mechanism 500, the first motor 507 is started, the first motor 407 drives the cold air fan 508 to rotate and blow cold air into the cooling channel 501, the falling grains in the cooling channel 501 are cooled physically, heat is dissipated to the outside through the heat dissipation port 504, and the cooled grains fall to the stacking point under the guidance of the guide channel 503.

A gas suspension grain dryer comprises a floor-type mounting rack 100, wherein a first-stage preheating mechanism 200, a pipe chain conveying mechanism 300, a second-stage drying mechanism 400, a cooling mechanism 500 and a power driving part 600 are fixedly mounted on the mounting rack 100, the input end of the pipe chain conveying mechanism 300 is communicated with the output end of the first-stage preheating mechanism 200, the output end of the pipe chain conveying mechanism 300 is communicated with the input end of the second-stage drying mechanism 400, the output end of the second-stage drying mechanism 400 is communicated with the input end of the cooling mechanism 500, the output end of the cooling mechanism 500 inclines downwards and points to a stacking point, the first-stage preheating mechanism 200 is used for preheating grains, the pipe chain conveying mechanism 300 is used for conveying the preheated grains to the second-stage drying mechanism 400, the second-stage drying mechanism 400 is used for drying the preheated grains in a gas suspension manner, the cooling mechanism 500 receives the dried grains and is used for cooling the grains, and the, The pipe chain conveying mechanism 300 provides driving power.

In the process of drying the grains, a user pours the grains into the first-stage preheating mechanism 200 from the input end of the first-stage preheating mechanism 200, the first-stage preheating mechanism 200 preheats the grains, the grains are conveyed into the pipe chain conveying mechanism 300 after preheating, the pipe chain conveying mechanism 300 circularly and repeatedly operates and gradually conveys the grains to the second-stage drying mechanism 400, the second-stage drying mechanism 400 blows hot air from bottom to top and enables the preheated grains to be suspended and rolled and move towards the input end of the second-stage drying mechanism 400, in the process, the grains are uniformly dried, the dried grains enter the input end of the cooling mechanism 500 from the output end of the second-stage drying mechanism 400, the cooling mechanism 500 cools the dried grains, and finally the cooling mechanism 500 outputs the grains at the dry normal temperature to a stacking point.

The primary preheating mechanism 200 comprises a vertical preheating funnel 201 with openings at the upper and lower ends arranged, the opening size of the preheating funnel 201 is gradually increased from bottom to top along the vertical direction, a circular sealing plate 202 which can be disassembled and matched is coaxially and fixedly arranged at the large opening of the preheating funnel 201, a feeding funnel 203 is coaxially arranged above the sealing plate 202, the feeding funnel 203 is fixedly connected with the mounting rack 100, the opening size of the feeding funnel 203 is gradually increased from bottom to top, in order to connect the feeding funnel 203 with the preheating funnel 201, a connecting cylinder 204 with openings at the two ends arranged is coaxially penetrated on the sealing plate 202, the connecting cylinder 204 is in rotary connection and matching with the sealing plate 202, the top end of the connecting cylinder 204 is in butt connection with the opening at the lower end of the feeding funnel 203 and is in rotary connection and matching with the opening at the lower end of the feeding funnel 203, the bottom end of the connecting cylinder 204 extends into the preheating funnel, realize the preheating treatment of the grain.

Specifically, in order to uniformly preheat the grains introduced into the preheating hopper 201, a first rotating plate 205a is coaxially and fixedly sleeved on the outer circumferential surface of the bottom end of the connecting cylinder 204, a second rotating plate 205b with the same diameter as the first rotating plate 205a is coaxially arranged below the first rotating plate 205a, a rectangular guide plate 206 for connecting the first rotating plate 205a and the second rotating plate 205b is arranged between the first rotating plate 205a and the second rotating plate 205b, the width direction of the guide plate 206 is parallel to the axial direction of the connecting cylinder 204, an included angle between the length direction of the guide plate 206 and the radial direction of the second rotating plate 205b is an acute angle, the acute angle is larger than 15 degrees and smaller than 45 degrees, preferably, an included angle between the length direction of the guide plate 206 and the radial direction of the second rotating plate 205b is 30 degrees, one end of the guide plate 206 in the length direction is flush with the outer circumferential surface of the second rotating plate 205b, the other end of the guide plate is flush with the, the grain dropped between the first rotating plate 205a and the second rotating plate 205b is centrifugally moved by the rotation of the connecting cylinder 204, and uniformly sprinkled onto the inner wall of the preheating hopper 201 under the guidance of the guide plate 206.

More specifically, in order to avoid the blockage of the grains in the feeding funnel 203 and the connecting cylinder 204, a stirring shaft 207 is coaxially arranged in the connecting cylinder 204, the lower end of the stirring shaft 207 and the two rotating plates 205b are fixedly connected, and the upper end of the stirring shaft 207 extends into the feeding funnel 203, so that the grains can smoothly fall into the connecting cylinder 204 from the feeding funnel 203 through the stirring of the stirring shaft 207.

In order to carry out preheating treatment to the grain that the centrifugation was spilt on preheating the funnel 201 inner wall, the outside fixed cover of preheating funnel 201 is equipped with the toper cover 208 rather than matching, inlay on the inner wall of toper cover 208 and be equipped with the preheating rod 209 of laminating mutually with preheating funnel 201, preheating rod 209 is used for generating heat and with heat transfer to preheating funnel 201 on, preheating rod 209 is laminated to its bottom by the top of preheating funnel 201, preheating funnel 201 is made for the material that the heat conductivility is good, in order to promote the effect of preheating, preheating rod 209 is provided with a plurality ofly and arranges along preheating funnel 201 place circumferencial direction array.

in the working process of the primary preheating mechanism 200, a user pours grains into the preheating funnel 201, the power driving part 600 drives the connecting cylinder 204 to rotate around the axial axis of the connecting cylinder, the grains fall between the first rotating plate 205a and the second rotating plate 205b through the connecting cylinder 204 under the action of self gravity, meanwhile, the connecting cylinder 204 drives the first rotating plate 205a and the second rotating plate 205b to rotate synchronously, so that the grain positioned between the first rotating plate 205a and the second rotating plate 205 generates centrifugal motion, and uniformly sprinkled on the inner wall of the preheating hopper 201 under the guiding action of the guiding plate 206, the grains will slide from the top of the inner wall of the preheating hopper 201 to the bottom thereof, in the process, the preheating rod 209 generates heat and transfers the heat to the preheating funnel 201, the preheating funnel 210 performs uniform preheating treatment on the grains rolling down along the interior of the preheating funnel 210, and the preheated grains enter the input end of the pipe chain conveying mechanism 300 from the output end of the preheating funnel 210.

The pipe chain conveying mechanism 300 comprises a first mounting shell 301 and a second mounting shell 302 which are fixedly connected with the mounting frame 100 and are sealed, the first mounting shell 301 and the second mounting shell 301 are coplanar and are arranged at intervals, the first mounting shell 301 and the second mounting shell 302 are far away from one end face and are both arranged into an arc-shaped face, the first mounting shell 301 and the second mounting shell 302 are close to one end face and are both provided with rectangular mounting planes which are vertically arranged in the width direction, one ends of the two mounting planes in the length direction are provided with transition pipelines 304 for connecting and connecting the first mounting shell 301 and the second mounting shell 302, one ends of the mounting planes on the first mounting shell 301, which are far away from the transition pipelines 304 in the length direction, are provided with T-shaped tee input pipelines 304, the input pipelines 304 comprise horizontal sections and vertical sections which are mutually communicated, the axial direction of the horizontal sections of the input pipelines 304 is parallel to the axial direction of the transition pipelines 303, the diameters, one end of the horizontal section of the input pipeline 304 is connected and communicated with the first mounting shell 301, the other end of the horizontal section of the input pipeline is connected and communicated with the second mounting shell 302 through the second-stage drying mechanism 400, and the input end of the second-stage drying mechanism 400 is located between the input pipeline 304 and the second mounting shell 302.

In order to convey the preheated grains flowing into the input pipeline 304 to the input end of the secondary drying mechanism 400, the pipe chain conveying mechanism 300 further comprises a driving dial 305 rotatably arranged in the first mounting shell 301 and a driven dial 306 rotatably arranged in the second mounting shell 302, the axial directions of the driving dial 305 and the driven dial 306 are both parallel to the axial direction of the connecting cylinder 204, a conveying chain 307 for connecting the driving dial 305 and the driven dial 306 is arranged between the driving dial 305 and the driven dial 306, the conveying chain 307 is engaged with the driving dial 305 and the driven dial 306 and is used for transmitting the power of the driving dial 305 to the driven dial 306, the conveying chain 307 sequentially bypasses the driving dial 305, passes through the horizontal section of the input pipeline 304, the input end of the secondary drying mechanism 400, bypasses the driven dial 306 and passes through the transition channel 303 to form a closed circulation loop, and a circular conveying plate 308 matched with the transition pipeline 303 is arranged on the conveying chain 307, the conveying plates 308 are provided in a plurality of numbers and are arranged at equal intervals along the circulating running direction of the conveying chain 307, and by driving the conveying chain 307 to run in the counterclockwise direction, the grains in the vertical section of the input pipeline 304 are conveyed into the secondary drying mechanism 400 through the horizontal pipes thereof.

During the operation of the pipe chain conveying mechanism 300, the preheated grains will slide to the horizontal section through the vertical section of the input pipeline 304, at this time, the power driving part 600 transmits power to the driving drive plate 305 and drives the driving drive plate 305 to rotate counterclockwise, the driving drive plate 305 and the driven drive plate 306 are matched with each other, so that the conveying chain 307 rotates counterclockwise circularly, the conveying chain 307 drives the conveying plate 308 to operate synchronously, the conveying plate 308 pushes the preheated grains into the input end of the secondary drying mechanism 400, and then the preheated grains are subjected to gas suspension drying treatment by the secondary drying mechanism 400.

a material storage cavity is formed between two adjacent conveying plates 308, the pipe chain conveying mechanism 300 receives the preheated grains and temporarily stores the grains in the material storage cavity, and obviously, the material storage cavity can also realize the function of conveying the grains quantitatively.

the conveying chain 307 is provided with an annular chain which is positioned between two adjacent conveying plates 308 and is positioned at the center, and a plurality of teeth protruding outwards are arrayed in the circumferential direction of the driving drive plate 305/the driven drive plate 306; a part of the conveying chain 307 matched with the driving drive plate 305/driven drive plate 306, wherein the conveying plates 308 are positioned in a groove formed between two adjacent teeth, and the tip parts of the teeth are embedded into an annular chain between two adjacent conveying plates 308; the endless chain is pulled by the teeth to provide a stable driving force to the conveyor chain 307.

the secondary drying mechanism 400 comprises a vertically arranged suspension tank 401, the axial direction of the suspension tank 401 is parallel to the axial direction of the preheating funnel 201, the suspension tank 401 is composed of an upper tank body 401a and a lower tank body 401b which are fixedly connected up and down, the upper tank body 401a is positioned above the lower tank body 401b, the lower tank body 401a is positioned between the horizontal section of the input pipeline 304 and the second mounting shell 302, in order to receive the preheated grains output by the horizontal section of the input pipeline 304, a first butt joint pipeline 407a for connecting and communicating the lower tank body 401b and the horizontal section of the input pipeline 304 is arranged between the lower tank body 401b and the horizontal section of the input pipeline 304, a second butt joint pipeline 407b for connecting and communicating the lower tank body 401b and the second installation shell 302 is arranged between the lower tank body 401b and the second installation shell 302, the first butt joint pipeline 407a and the second butt joint pipeline 407b are coaxial with the horizontal section of the input pipeline 304 and are arranged in an equal diameter mode, and the first butt joint pipeline 407a and the second butt joint pipeline 407b are arranged at intervals.

Specifically, in order to perform air suspension drying on the grains entering the suspension tank 401, the secondary drying mechanism 400 further includes an air blower 402 disposed below the suspension tank 401 and fixedly connected to the mounting frame 100, an output end of the air blower 402 is connected to a lower end of the lower tank 401b through a pipe, a heater 403 is disposed on the pipe for heating air flowing through the lower tank, in order to enable the hot air entering the suspension tank 401 to uniformly distribute and flow from bottom to top, a lower end of the lower tank 401b is disposed in a tapered structure, an opening formed by the tapered surface is gradually enlarged from bottom to top, an annular first guide plate 406a is coaxially disposed in the opening at the upper end of the lower tank 401b, a rectangular second guide plate 406b for connecting the first guide plate 406a and the inner wall of the lower tank 401b is disposed between the first guide plate 406a and the inner wall of the lower tank 401b, and the second guide plate 406b is vertically disposed in the height direction, The width direction is arranged along the radial direction of the first guide plate 406a, the second guide plate 406b is provided with a plurality of guide plates and is arranged in an array mode along the circumferential direction where the first guide plate 406a is located, the first butt joint pipeline 407b is communicated with the inner circular surface of the first guide plate 406a, the second butt joint pipeline 407b is communicated with the inner circular surface of the second guide plate 406a, and hot air is continuously blown into the suspension tank 401 from bottom to top to achieve air suspension drying of grains.

more specifically, in order to output hot air and dried grain together, the second-stage drying mechanism 400 further comprises a vertically arranged rectangular discharge channel 404, the discharge channel 404 is communicated with the upper end of the upper tank body 401a through a pipeline, an exhaust port 405 which is opposite to the pipeline output end is formed in the discharge channel 404, a first seal plate matched with the exhaust port 405 and provided with a plurality of pores is arranged on the exhaust port 405, the bottom of the discharge channel 404 is communicated with the cooling mechanism 500, the grain in the suspension tank 401 is gathered together vertically upwards along with the hot air and enters the discharge channel 404, and the opening size of the upper end of the upper tank body 401a is gradually reduced from bottom to top.

In the working process of the secondary drying mechanism 400, the air blower 402 and the heater 403 are started and matched with each other to blow hot air into the suspension tank 401, the hot air is guided out from bottom to top in the suspension tank 401 through the exhaust port 405, in the process, when the conveying plate 308 pushes the preheated grains to the middle of the first guide plate 406a, the hot air overcomes the gravity action of the grains to enable the grains to suspend and move slowly vertically upwards, in the process, the grains roll and turn over, the hot air carries out all-dimensional drying treatment on the grains, the dried grains enter the discharge channel 404 and are output to the cooling mechanism 500 through the discharge channel 404.

In order to cool the dried grains and avoid the grains from being accumulated, heated and deteriorated, the cooling mechanism 500 comprises a rectangular cooling channel 501 which is vertically arranged below the discharging channel 404, a guiding channel 501 which is obliquely arranged and used for connecting and connecting the upper end of the cooling channel 501 and the output end of the discharging channel 404 is arranged between the upper end of the cooling channel 501 and the output end of the discharging channel 404, the lower end of the cooling channel 501 is communicated with a guiding channel 503 which is obliquely arranged, the output end of the guiding channel 503 points to a stacking point, in order to cool the dried grains in the cooling channel 501, an installation cylinder 505 which is axially and horizontally arranged is arranged on one side surface of the cooling channel 501, two ends of the installation cylinder 505 are opened and arranged and are communicated with the cooling channel 501, a heat dissipation port 504 which is communicated with the installation cylinder 505 is arranged on the side surface of the cooling channel 501, and a second sealing plate which is matched with the heat dissipation, a fixing frame 506 is arranged in the mounting cylinder 505, a first motor 507 is fixedly mounted on the fixing frame 506, an output end of the first motor 507 is coaxially connected with a cold air fan 508, and the cold air fan 508 is arranged opposite to the heat dissipation opening 504.

specifically, in order to enable dried grains to fall down uniformly in the cooling channel 501, V-shaped diffusion plates 502a which are arranged in a staggered manner are fixedly mounted in the introducing pipeline 502, openings of the diffusion plates 502a are arranged downwards along the inclined direction of the introducing pipeline 502, in order to facilitate installation of the diffusion plates 502a, an opening and an opening are formed in the upper end face of the introducing pipeline 502, a cover plate 502b used for carrying out density on the introducing pipeline 502 is arranged, and the cover plate 502b and the introducing pipeline 502 are detachably connected and matched.

in the working process of the cooling mechanism 500, the first motor 507 is started, the first motor 407 drives the cold air fan 508 to rotate and blow cold air into the cooling channel 501, the falling grains in the cooling channel 501 are cooled physically, heat is dissipated to the outside through the heat dissipation port 504, and the cooled grains fall to the stacking point under the guidance of the guide channel 503.

In order to transmit power to the connecting cylinder 204 and the driving dial 305, the power driving part 600 includes a second motor 601 fixedly mounted on the mounting frame 100, and a power spindle 602 rotatably mounted on the mounting frame 100, an axial direction of an output shaft of the second motor 601 and an axial direction of the power spindle 602 are both vertically arranged, the power spindle 602 movably penetrates through the first mounting shell 301 to be coaxially and fixedly connected with the driving dial 305, a first belt transmission assembly 603 used for connecting the output shaft of the second motor 601 and the power spindle 602 and used for transmitting power of the output shaft of the second motor 601 to the power spindle 602 is arranged between the output shaft of the second motor 601 and the power spindle 602, a second belt transmission assembly 604 used for connecting the output shaft of the second motor 601 and used for transmitting power of the power spindle 602 to the connecting cylinder 204 is arranged between the power spindle 602 and the connecting cylinder 204, the first belt transmission assembly.

specifically, the first belt transmission assembly 603 includes a first driving pulley coaxially fixed on an output shaft of the second motor 601, a first driven pulley coaxially fixed on the power spindle 602, and a first belt arranged between the first driving pulley and the first driven pulley and used for connecting the first driving pulley and the first driven pulley, a diameter of the first driving pulley is smaller than a diameter of the first driven pulley, the second belt transmission assembly 604 includes a second driving pulley coaxially fixed on the power spindle 602, a second driven pulley coaxially fixed on the connecting cylinder 204, and a second belt arranged between the second driving pulley and the second driven pulley and used for connecting the second driving pulley and the second driven pulley, and a diameter of the second driving pulley is larger than a diameter of the second driven pulley.

in the working process of the power transmission part 600, the second motor 601 is started, the first belt transmission component 603 transmits the power of the second motor 602 to the power spindle 602 and drives the power spindle 602 to rotate counterclockwise, the power spindle 602 drives the driving dial 305 to rotate counterclockwise, so that the pipe chain conveying mechanism 300 operates, and meanwhile, the second belt transmission component transmits the power of the power spindle 602 to the connecting cylinder 204 and drives the connecting cylinder 204 to rotate counterclockwise, so that the primary preheating mechanism 200 operates.