阅读说明：本技术 一种离心去石粮食微波干燥装置 (Microwave drying device for centrifugal stone-removing grains ) 是由 王静平 孙铜生 李俊萍 王晗钰 何慧娟 张春霞 黄腾 于 2019-10-11 设计创作，主要内容包括：本发明公开了一种离心去石粮食微波干燥装置,属于粮食干燥技术领域,包括呈圆筒状的外转动筒、设于外转动筒内侧的固定筒、连接于外转动筒顶部的细石筛板、设于细石筛板中部上方的进料斗、均匀固定在固定筒外表面上的微波发生器以及螺旋式由上至下缠绕固定在外转动筒外表面上的粮食通道,粮食通道包括由上至下依次设置的去石通道、一级粮食通道、二级粮食通道及三级粮食通道,去石通道底部整体、一级粮食通道底部背向外转动筒的一半部分、二级粮食通道底部朝向外转动筒的一半部分均遍布有刚好供粮食通过的相应通口。本发明结构紧凑,设计巧妙,能分级去除粮食中含有的不同粒径的石子,能保障粮食均匀受热,确保粮食的干燥质量。(The invention discloses a microwave drying device for centrifugally removing stones from grains, which belongs to the technical field of grain drying and comprises a cylindrical outer rotating cylinder, a fixed cylinder arranged at the inner side of the outer rotating cylinder, a fine stone sieve plate connected to the top of the outer rotating cylinder, a feed hopper arranged above the middle part of the fine stone sieve plate, a microwave generator uniformly fixed on the outer surface of the fixed cylinder and a grain channel spirally wound from top to bottom and fixed on the outer surface of the outer rotating cylinder, wherein the grain channel comprises a stone removing channel, a primary grain channel, a secondary grain channel and a tertiary grain channel which are sequentially arranged from top to bottom, and the whole bottom of the stone removing channel, the bottom of the primary grain channel, the half part of the outer rotating cylinder, and the half part of the bottom of the secondary grain channel, which faces the outer rotating cylinder, are respectively provided with corresponding. The invention has compact structure and smart design, can remove stones with different grain diameters in the grains in a grading way, can ensure that the grains are uniformly heated, and can ensure the drying quality of the grains.)

1. The utility model provides a centrifugation stone grain microwave drying device that removes, its characterized in that, including being cylindric outer a rotation section of thick bamboo (1), locating outer a rotation section of thick bamboo (1) inboard solid fixed cylinder (2), connect in the fine stone sieve (3) at outer a rotation section of thick bamboo (1) top, locate feeder hopper (4) of fine stone sieve (3) middle part top, evenly fix microwave generator (5) on solid fixed cylinder (2) surface and spiral winding from top to bottom fix grain passageway (6) on outer a rotation section of thick bamboo (1) surface, the structure of fine stone sieve (3) is by middle part concave curved surface shape that gradually hangs down to week side, evenly distributed has first opening (31) that the aperture is less than the grain particle diameter on fine stone sieve (3), outer a rotation section of thick bamboo (1) top is fixed with and connects flitch (7) around in fine stone sieve (3) bottom outside, the outside that connects flitch (7) is along being fixed with the sealed shell (8) that the cage covers on fine stone sieve (3) top ) The middle part of the top surface of the sealed shell (8) is over against a discharge hole of the feed hopper (4), the material receiving plate (7) is gradually lowered from one side to the opposite side of the material receiving plate, the lower side of the material receiving plate (7) is communicated with a grain discharge pipe (9) extending downwards, a fine stone guide plate (10) positioned above the fixed cylinder (2) is fixed on the inner side of the bottom of the fine stone sieve plate (3), the fine stone guide plate (10) is gradually lowered from the peripheral side to the center of the fine stone guide plate, and the center of the fine stone guide plate (10) is communicated with a small stone discharge pipe (11) which is positioned on the inner side of the fixed cylinder (2) and extends vertically downwards;

the grain channel (6) is divided into four layers and comprises a stone removing channel (61), a first-stage grain channel (63), a second-stage grain channel (65) and a third-stage grain channel (67) which are sequentially arranged from top to bottom, wherein second through openings (62) for allowing grains to pass through are uniformly distributed at the bottom of the stone removing channel (61), third through openings (64) for allowing grains to pass through are uniformly distributed at the bottom of the first-stage grain channel (63) back to the half part of the outward rotating cylinder (1), and fourth through openings (66) for allowing grains to pass through are uniformly distributed at the bottom of the second-stage grain channel (65) towards the half part of the outward rotating cylinder (1); the two ends of the first-stage grain channel (63) and the second-stage grain channel (65) and the upper end of the third-stage grain channel (67) are sealed, the lower end of the third-stage grain channel (67) is open, a material receiving disc (12) positioned below the third-stage grain channel (67) is coaxially and fixedly sleeved on the outer side of the lower end of the outer rotating cylinder (1), the periphery of the material receiving disc (12) extends out of the lower end of the third-stage grain channel (67) along the edge and turns upwards, a grain outlet pipe (13) is connected to one side, back to the lower end of the third-stage grain channel (67), of the bottom of the material receiving disc (12), a switch valve is arranged on the grain outlet pipe (13), the top of the upper end of the stone removing channel (61) is communicated with the lower end of the grain outlet pipe (9), and the lower end of the stone removing channel (61) is communicated with a large stone discharge pipe (14;

the upper and lower end of solid fixed cylinder (2) is all uncovered, and solid fixed cylinder (2) bottom is fixed with at least three downward extensions along its periphery equidistant and supports support post (15) subaerial, outer rotation section of thick bamboo (1) bottom suit is in all support post (15) outsides, and the junction is equipped with bearing (16), outer rotation section of thick bamboo (1) lateral wall and grain passageway (6) position department impartial interval that pastes each other seted up through-hole (17), outer rotation section of thick bamboo (1) bottom coaxial-type is fixed with around drive ring body (18) in its week side, drive ring body (18) inboard is equipped with interior meshing tooth (19), and drives ring body (18) inboard meshing and be equipped with drive gear (20), fixedly connected with step motor (21) is located at the center of drive gear (20).

2. The microwave drying device for centrifugal stone-removing grains according to claim 1, characterized in that the center of the fine stone sieve plate (3) is connected with a fixed short column (32), the peripheral side of the fixed short column (32) is fixed with at least two connecting rods (33) connected to the side wall of the discharge hole of the feed hopper (4) at equal intervals, and the top surface of the fixed short column (31) is gradually lowered from the middle part to the peripheral side.

3. The microwave drying device for centrifugal stone-removing grains according to claim 1, wherein the bottoms of the stone-removing channel (61), the primary grain channel (63), the secondary grain channel (65) and the tertiary grain channel (67) are all in a concave arc shape.

4. The microwave drying device for centrifugal stone-removing grains according to claim 1, wherein the receiving disc (12) is gradually higher from one side of the receiving disc connected with the grain outlet pipe (13) to the opposite side of the receiving disc, and the included angle between the bottom of the receiving disc (12) and the horizontal line is 5-20 degrees.

Technical Field

The invention relates to the technical field of grain drying, in particular to a microwave drying device for centrifugally removing stones from grains.

Background

The dryer is a mechanical device for reducing moisture of materials by using heat energy, and is used for drying objects. Dryers use heat to vaporize moisture in the material, typically moisture or other volatile liquid components, to achieve a specified moisture content of the solid material. The microwave drying is different from the traditional drying mode, and the heat conduction direction is the same as the moisture diffusion direction. Compared with the traditional drying mode, the drying device has the advantages of high drying speed, energy conservation, high production efficiency, uniform drying, clean production, easy realization of automatic control, improvement of product quality and the like, thereby being more and more emphasized in various drying fields. The purpose of drying is for the needs of material use or further processing, use grain drying equipment more widely at present as the mainstream, because china is the food production big country, so the demand to grain drying equipment is extremely big, and the harvest time of every day is most grain drying machines all in overload running state, to domestic grain drying machine equipment, current production technique is still in lower level stage, its function singleness is simplified, so need constantly improve the structural function of desiccator, make it can deal with multiple production demand.

The patent that application publication number is CN 107883738A discloses a centrifugation stone grain dryer that removes, and it includes the drying tower and removes stone equipment, the feed inlet is established on the top of drying tower, and the drying tower lower extreme is connected remove stone equipment, remove the inside of stone equipment and erect and establish centrifugal cylinder, the export of drying tower lower extreme is located centrifugal cylinder's central top, centrifugal cylinder's upper end is equipped with diffusion formula arc baffle all around, remove stone equipment the casing with be equipped with grain discharge way between the centrifugal cylinder, the arc baffle with grain discharge way connects, and the bottom of removing stone equipment is established and is leaked the hopper-shaped discharge gate, and the rotating electrical machines is connected to the centrifugal cylinder lower extreme, and the air outlet is seted up all around to the centrifugal cylinder bottom face, and the fan is established to the air outlet lower extreme, and the terminal surface is equipped with the stone export under the centrifugal cylinder, the stone export is followed. Through the mode, sundries such as stones and the like can be removed in the process of drying the grain grains. It has the following disadvantages: the drying module is separated from the stone removing module, so that the structure is not compact enough; the stone particles are required to be uniformly removed only according to the quality difference between the dried grains and the stone particles, and the removal effect is poor; the drying module is simple in structure, the drying quality of the grains cannot be guaranteed, and the turning-over operation of the grains can be realized only by means of external force in order to guarantee the uniform heating of the grains.

Disclosure of Invention

1. Technical problem to be solved

The technical problem to be solved by the invention is to provide a microwave drying device for centrifugally removing stones from grains, which is compact in structure and ingenious in design, can remove stones with different particle sizes in grains in a grading manner, has a good effect on removing stone particles, can ensure that the grains are uniformly heated, and ensures the drying quality of the grains.

2. Technical scheme

In order to solve the problems, the invention adopts the following technical scheme:

a centrifugal stone-removing grain microwave drying device comprises a cylindrical outer rotating cylinder, a fixed cylinder arranged on the inner side of the outer rotating cylinder, a fine stone sieve plate connected to the top of the outer rotating cylinder, a feed hopper arranged above the middle part of the fine stone sieve plate, a microwave generator uniformly fixed on the outer surface of the fixed cylinder and a grain channel spirally wound from top to bottom and fixed on the outer surface of the outer rotating cylinder, wherein the fine stone sieve plate is in a concave curved surface shape gradually reduced from the middle part to the peripheral side, first through holes with the hole diameter smaller than the grain diameter are uniformly distributed on the fine stone sieve plate, a material receiving plate surrounding the outer side of the bottom of the fine stone sieve plate is fixed at the top of the outer rotating cylinder, a sealing shell covered above the fine stone sieve plate is fixed on the outer edge of the material receiving plate, the middle part of the top surface of the sealing shell is over against a discharge hole of the feed hopper, and, the lower side of the material receiving plate is communicated with a grain discharging pipe extending downwards, the inner side of the bottom of the fine stone sieve plate is fixedly provided with a fine stone guide plate positioned above the fixed cylinder, the fine stone guide plate is gradually lowered from the peripheral side to the center of the fine stone guide plate, and the center of the fine stone guide plate is communicated with a small stone discharging pipe which is positioned inside the fixed cylinder and extends vertically downwards;

the grain channel is divided into four layers and comprises a stone removing channel, a first-stage grain channel, a second-stage grain channel and a third-stage grain channel which are sequentially arranged from top to bottom, wherein second through openings which are just used for grains to pass through are uniformly distributed at the bottom of the stone removing channel, half parts of the bottom of the first-stage grain channel, back to the outer rotating cylinder, are uniformly distributed with third through openings which are just used for grains to pass through, and half parts of the bottom of the second-stage grain channel, facing the outer rotating cylinder, are uniformly distributed with fourth through openings which are just used for grains to pass through; the two ends of the first-stage grain channel and the second-stage grain channel and the upper end of the third-stage grain channel are sealed, the lower end of the third-stage grain channel is open, a material receiving disc positioned below the third-stage grain channel is coaxially and fixedly sleeved on the outer side of the lower end of the outer rotating cylinder, the peripheral edge of the material receiving disc extends out of the lower end of the third-stage grain channel and turns upwards, a grain outlet pipe is connected to one side of the bottom of the material receiving disc, which is back to the lower end of the third-stage grain channel, a switch valve is arranged on the grain outlet pipe, the top of the upper end of the stone removing channel is communicated with the lower end of the grain discharging pipe, and the lower end of the stone removing;

the utility model discloses a grain passageway, including a fixed section of thick bamboo, a fixed section of thick bamboo bottom, the upper and lower extreme of a fixed section of thick bamboo is all uncovered, and fixed section of thick bamboo bottom is fixed with three piece at least downward extensions along its border equidistant support column that supports subaerial, it rotates the bobbin base suit outward in all support column outsides, and the junction is equipped with the bearing, the through-hole has been seted up to the equidistant of the mutual attached position department of outer rotation section of thick bamboo lateral wall and grain passageway, it is fixed with around the drive ring body in its week to rotate bobbin base portion coaxial-type outward, drive ring body inboard is equipped with the inner gearing tooth.

Furthermore, the center department of fine stone sieve is connected with fixed short column, the week side equidistant of fixed short column is fixed with two at least connecting rods that are connected to on the feeder hopper discharge gate lateral wall, the top surface of fixed short column is by its middle part to week side gradually low. The arrangement can lead the upper end and the lower end of the fine stone sieve plate to be fixedly supported, thereby being beneficial to maintaining the stability of the fine stone sieve plate.

Furthermore, the bottoms of the stone removing channel, the first-stage grain channel, the second-stage grain channel and the third-stage grain channel are all in a concave arc shape. The setting is the arc structure, can gather together grain at the middle part of corresponding passageway, can ensure that grain can get into the next layer grain passageway smoothly in, simultaneously, set to the area that the arc can increase corresponding passageway bottom to the quantity that sets up of the corresponding opening of multiplicable, and then can promote grain and get into the efficiency of next layer grain passageway.

Further, the material receiving disc is gradually higher from one side of the material receiving disc connected with the grain outlet pipe to the opposite side of the material receiving disc, and the included angle between the bottom of the material receiving disc and the horizontal line is 5-20 degrees. The obliquely arranged material receiving disc can promote grains falling on the material receiving disc to move towards the opposite side of the material receiving disc, so that the tiling effect of the grains on the material receiving disc can be improved.

3. Advantageous effects

(1) The invention is provided with a fine stone sieve plate positioned right below a feed hopper, a stone removing channel positioned in the grain channel and a material receiving disc arranged below the grain channel, wherein the fine stone sieve plate, the grain channel and the material receiving disc are all fixedly connected on an outer rotating cylinder, the bottom of the outer rotating cylinder is connected with a stepping motor, a fixed cylinder supported on the ground is arranged at the inner side of the outer rotating cylinder, a fine stone guide plate positioned above the fixed cylinder is fixed at the bottom of the fine stone sieve plate, the center of the fine stone guide plate is lower and is communicated with a small stone discharging pipe vertically and downwardly extending from the inner side of the fixed cylinder, second through holes for grains to pass through are uniformly distributed at the bottom of the stone removing channel, and the lower end of the stone removing channel is communicated with a large stone discharging pipe extending to the outer side. When the device is applied, the stepping motor drives the outer rotating cylinder to rotate, the fine stone sieve plate, the grain channel and the material receiving disc rotate along with the outer rotating cylinder, grains fall on the fine stone sieve plate from the feed hopper at first, stone particles with the particle size smaller than the grains can pass through the first through hole in the fine stone sieve plate to fall on the fine stone guide plate, and finally, the stone particles are discharged along the small stone discharge pipe, so that the small stones with the particle size smaller than the grains are successfully removed; then the grains enter the grain channel, and firstly enter the stone removing channel, and stone particles with the grain size larger than the grains move downwards along the stone removing channel because the stone particles cannot pass through the second through hole, and are finally discharged along the large stone discharging pipe, namely, the large stones with the grain size larger than the grains are successfully removed; grain breaks away from the grain passageway and falls on the take-up pan after the microwave drying in multilayer grain passageway, and rotatory take-up pan produces the centrifugal force effect to the grain after the drying, because the quality that the particle diameter and the similar stone granule of grain in the grain after the drying is great, the centrifugal force that the stone granule received is also great for the stone granule can cross the take-up pan and grain remains in the take-up pan, the stone that the particle diameter and the grain are close is got rid of in the success to this, realize getting rid of the stone granule completely, the grain after will drying and edulcoration is collected at last can.

(2) The microwave oven is provided with an outer rotating cylinder and a fixed cylinder, wherein the outer rotating cylinder is sleeved outside the fixed cylinder, microwave generators are uniformly fixed on the outer surface of the fixed cylinder, a grain channel is spirally wound on the outer wall of the outer rotating cylinder, and through holes are arranged at positions where the side wall of the outer rotating cylinder and the grain channel are attached to each other at equal intervals, so that microwaves can be promoted to enter the grain channel; the microwave generator is distributed annularly, the grain channel spirally surrounds the outer side of the microwave generator, the structure volume is small, and grains can be fully contacted with microwaves, so that the drying quality of the grains can be ensured.

(3) The grain channel comprises a first-stage grain channel, a second-stage grain channel and a third-stage grain channel, wherein third through holes for allowing grains to pass through are uniformly distributed on the half part of the bottom of the first-stage grain channel, which is back to an outward rotating cylinder, the fourth through holes for allowing the grains to pass through are uniformly distributed on the half part of the bottom of the second-stage grain channel, which is facing to the outward rotating cylinder, the two ends of the first-stage grain channel and the second-stage grain channel and the upper end of the third-stage grain channel are sealed, and the lower end of the third-stage grain channel. During the application, grain receives the effect of centrifugal force and gathers in the third port place side in the one-level grain passageway, grain is very fast falls into the second grade grain passageway from the third port, under centrifugal action, grain concentrates on the one side of the section of thick bamboo that rotates outwards dorsad, when grain accumulates when great in the second grade grain passageway, grain just can fall from the fourth port, thereby can prolong grain by microwave heating's time in the second grade passageway, subsequently grain gets into tertiary grain passageway, and follow tertiary grain passageway and move down to breaking away from the grain passageway, the better realization of the moving process of grain in multilayer grain passageway is to the turn-over operation of grain, and it only relies on the ingenious design of grain passageway structure to realize, need not realize the turn-over by external force, just can ensure the thermally equivalent of grain, and then can guarantee grain drying quality.

In conclusion, the invention has compact structure and smart design, can remove stones with different particle sizes in grains in a grading way, has better effect of removing stone particles, can ensure that the grains are uniformly heated, and ensures the drying quality of the grains.

Drawings

FIG. 1 is a schematic view of the internal structure of the present invention;

FIG. 2 is a schematic view of the external structure of the present invention;

fig. 3 is a schematic cross-sectional view of the grain passage 6;

fig. 4 is a schematic view of the connection between the top of the fine stone screen plate 3 and the feed hopper 4.

Wherein, 1, an outer rotating cylinder; 2. a fixed cylinder; 3. fine stone sieve plate; 31. a first port; 32. a fixed short column; 33. a connecting rod; 4. a feed hopper; 5. a microwave generator; 6. a grain passage; 61. removing a stone channel; 62. a second port; 63. a first-stage grain channel; 64. a third port; 65. a secondary grain channel; 66. a fourth port; 67. a third-stage grain channel; 7. a material receiving plate; 8. sealing the housing; 9. a grain discharge pipe; 10. a fine stone guide plate; 11. arranging small stone pipes; 12. a take-up pan; 13. a grain outlet pipe; 14. discharging large stone pipes; 15. a support pillar; 16. a bearing; 17. a through hole; 18. a drive ring body; 19. inner meshing teeth; 20. a drive gear; 21. a stepper motor.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.