阅读说明：本技术 一种适用于连续流化床烘干过程的除杂装置 (Impurity removing device suitable for continuous fluidized bed drying process ) 是由 李家勇 季光明 杨健 胡芳 吴国和 程润喜 于 2020-05-12 设计创作，主要内容包括：本发明公开了一种适用于连续流化床烘干过程的除杂装置,包括：打散装置,其设置在床体筛板上方；集杂装置,其由所述床体筛板内凹形成,且设置在所述打散装置沿物料输送方向上的近末端处的布风锥体中,所述集杂装置为可开合的类锥斗式结构；清杂装置,其连接在所述进气管的最低点处,所述清杂装置为可开合的管式结构。本发明具有快速清除杂物,实现连续化、稳定化、高效化烘干物料的有益效果。(The invention discloses an impurity removing device suitable for a continuous fluidized bed drying process, which comprises: the scattering device is arranged above the bed body sieve plate; the impurity collecting device is formed by the inward concave of the sieve plate of the bed body, is arranged in the wind distribution cone at the near tail end of the scattering device along the material conveying direction, and is of an openable cone-like bucket structure; and the impurity removing device is connected to the lowest point of the air inlet pipe and is of an openable and closable pipe type structure. The invention has the advantages of fast removing sundries, realizing continuous, stable and high-efficiency drying of materials.)

1. An impurity removal device suitable for use in a continuous fluidized bed drying process, comprising:

the scattering device (1) is arranged above the bed body sieve plate (2) and is of a rotary chain type rake tooth structure, the air distribution cone body (4) is arranged below the bed body sieve plate (2), the air distribution cone body (4) is divided into a plurality of sections which are not communicated with each other, and each section of the air distribution cone body (4) is connected with an air inlet pipe (6);

the impurity collecting device (3) is formed by the inward concave of the bed body sieve plate (2) and is arranged in a wind distribution cone (4) at the near tail end of the scattering device (1) along the material conveying direction, and the impurity collecting device (3) is of an openable cone-like bucket structure;

and the impurity removing device (5) is connected to the lowest point of the air inlet pipe (6), the air inlet pipe (6) is communicated with the air distribution cone (4) provided with the impurity collecting device (3), and the impurity removing device (5) is of an openable and closable tubular structure.

2. The impurity removing device suitable for the continuous fluidized bed drying process according to claim 1, wherein the impurity collecting device (3) comprises an impurity collecting cavity and a pneumatic porous gate valve, the impurity collecting cavity is of a porous cone-like bucket structure, and the pneumatic porous gate valve is arranged at the lower part of the impurity collecting cavity and controls the opening and closing of the impurity collecting cavity.

3. The impurity removing device suitable for the continuous fluidized bed drying process according to claim 2, wherein the impurity collecting cavity comprises a porous inclined plate (31) and a porous vertical plate (32), the porous inclined plate (31) and the porous vertical plate (32) are arranged oppositely, and two sides of the porous inclined plate (31) and the porous vertical plate (32) are welded on the inner wall of the air distribution cone (4).

4. The trash removal device for continuous fluidized bed drying process of claim 3, wherein the inclination angle of the porous inclined plate (31) is 45-60 °.

5. An impurity removing device suitable for a continuous fluidized bed drying process as claimed in any one of claims 2 or 3, wherein the width of the upper end of the impurity collecting cavity is 20-30 cm, and the width of the lower end of the impurity collecting cavity is 10-20 cm.

6. The device for the removal of impurities suitable for the continuous fluidized bed drying process according to claim 2, characterized in that the pneumatic gate valve comprises a porous valve plate (33) and a pneumatic assembly (34) for driving the porous valve plate (33) to open and close.

7. The impurity removing device suitable for the continuous fluidized bed drying process according to claim 6, wherein the pneumatic assembly (34) comprises a support (341), a cylinder (342), a cylinder push plate (343), a limit bolt (344), an arc rod (345) and a pair of rolling bearings (346), the cylinder (342) is fixed on the support (341) and located outside the wind distribution cone (4), the end of the piston rod of the cylinder (342) is connected with the cylinder push plate (343), the upper end of the arc rod (345) is connected with the rolling bearings (346) through a rotating shaft, the lower end of the arc rod is provided with an arc limit groove (347), the cylinder push plate (343) is provided with an opening, the limit bolt (344) is clamped in the arc limit groove (347), and the pair of rolling bearings are respectively fixed on two sides of the wind distribution cone (4).

8. The impurity removing device suitable for the continuous fluidized bed drying process according to claim 1, wherein the impurity removing device (5) comprises an impurity discharging pipe (51), a pneumatic gate valve (52) and an access door (53), the upper end of the impurity discharging pipe (51) is communicated with the lowest point of the air inlet pipe (6), the access door (53) is arranged at the lower end of the impurity discharging pipe, the access door (53) is connected through a hinge, a hand wheel is locked, and the pneumatic gate valve (52) is arranged on the impurity discharging pipe (51).

9. The impurity removing device suitable for the continuous fluidized bed drying process according to claim 8, wherein the air inlet pipe (6) is of a U-like structure, the impurity outlet pipe (51) is connected to the bottom of the elbow section of the air inlet pipe (6), and the inclination angle of the impurity outlet pipe (51) is 30-60 degrees.

10. The apparatus of claim 1, further comprising: and the collecting container (7) is arranged right below the impurity discharging position of the impurity removing device (5).

Technical Field

The invention relates to the technical field of fluidized bed anti-blocking. More particularly, the present invention relates to an impurity removal device suitable for use in a continuous fluidized bed drying process.

Background

In the field of low-temperature vinasse drying, a large fluidized bed is commonly used, air is blown from the lower part of a sieve plate of the bed body to blow vinasse materials on the sieve plate of the bed body to form an approximate fluidized state, and a multi-stage temperature and humidity control can be achieved by dividing an air blowing area below the sieve plate into multiple chambers.

Because the lees are often doped with sundries (the size is 0.5-5 cm and is unequal) such as stones, scrap iron, plastics and the like, the sundries with large density or volume are difficult to blow up, and along with the continuous operation of the drying equipment, the sundries can be accumulated on a sieve plate of a bed body to block an air outlet, so that the local air blowing of the sieve plate is difficult, and the materials are difficult to fluidize. Especially, at the front end of the fluidized bed, materials are often adhered with impurities to form a large and thick impurity area due to high humidity, high viscosity and easy agglomeration, and finally a local dead bed is formed, so that the smoothness of system operation, drying capacity and heat energy utilization rate are obviously reduced, and the materials in the dead area are continuously heated and dried to cause fire, so that the fluidized bed has great potential safety hazard.

In order to ensure the product quality and reduce the cost, a scattering device is generally arranged at the front end of the bed body at present, so that high-humidity and high-viscosity materials and impurities at the front end are sufficiently scraped and scattered, the accumulation of the materials is prevented, the fluidization of the materials is promoted, and the method effectively avoids the occurrence of the condition that the materials at the front end of the bed body are high in viscosity and easy to die. But there is a problem: debris can only be scraped to bed body middle section gathering by the device of breaing up, and because of factors such as high temperature hot gas flow, material boiling fluidization in the equipment production process, the workman can not effectively shift out debris, and the material is difficult to the fluidization in this region, also can influence the material and move to the rear end, and long-time production leads to the debris region to enlarge gradually, reduces dry productivity and efficiency, also has certain conflagration hidden danger. In order to solve the problem, the bed is usually stopped after a certain time (such as 24-48 hours) of production, the bed can be manually cleaned by entering the interior of the bed only after the air blower is kept on and the natural air is continuously blown to forcibly cool the bed, and the temperature of the bed is raised and the production is carried out after the cleaning is finished. The mode is time-consuming and labor-consuming, influences the productivity of the drying system and causes a large amount of heat energy loss.

Disclosure of Invention

An object of the present invention is to solve at least the above problems and to provide at least the advantages described later.

The invention also aims to provide an impurity removing device suitable for the continuous fluidized bed drying process, which can effectively separate materials and impurities in the continuous drying process by matching a scattering device, an impurity collecting device and an impurity removing device, prevent the impurities from blocking a bed layer and improve the production efficiency.

To achieve these objects and other advantages in accordance with the purpose of the invention, there is provided an impurity removing device adapted for a continuous fluidized bed drying process, comprising:

the scattering device is arranged above the bed body sieve plate and is of a rotary chain type rake tooth structure, the scattering device is used for scattering bonded materials and pushing the materials and sundries to move towards the rear end so as to prevent a large amount of materials from being accumulated at the front end, the air distribution cone is arranged below the bed body sieve plate and is divided into a plurality of sections, all the sections are not communicated with each other, and each section of the air distribution cone is connected with an air inlet pipe;

the impurity collecting device is formed by the inward concave of the sieve plate of the bed body, is arranged in the wind distribution cone at the near tail end of the scattering device along the material conveying direction, and is of an openable cone-like bucket structure;

and the impurity removing device is connected to the lowest point of the air inlet pipe, the air inlet pipe is communicated with the air distribution cone provided with the impurity collecting device, and the impurity removing device is of an openable tubular structure.

Preferably, the impurity collecting device comprises an impurity collecting cavity and a pneumatic porous gate valve, the impurity collecting cavity is of a porous cone-like bucket structure, and the pneumatic porous gate valve is arranged at the lower part of the impurity collecting cavity to control the opening and closing of the impurity collecting cavity.

Preferably, the impurity collecting cavity comprises a porous inclined plate and a porous vertical plate, the porous inclined plate and the porous vertical plate are arranged oppositely, and two sides of the porous inclined plate and two sides of the porous vertical plate are welded on the inner wall of the wind distribution cone.

Preferably, the inclination angle of the porous inclined plate is 45-60 degrees.

Preferably, the width of the upper end of the impurity collecting cavity is 20-30 cm, and the width of the lower end of the impurity collecting cavity is 10-20 cm.

Preferably, the pneumatic gate valve comprises a porous valve plate and a pneumatic assembly for driving the porous valve plate to open and close.

Preferably, the pneumatic component includes support, cylinder push pedal, spacing bolt, circular arc pole, a pair of antifriction bearing, the cylinder is fixed on the support, and is located the outside of wind distribution cone, the end-to-end connection of cylinder piston rod the cylinder push pedal, the circular arc pole upper end is connected through the pivot antifriction bearing, lower extreme set up the arc spacing groove, cylinder push pedal trompil, through spacing bolt joint is in the arc spacing inslot, a pair of antifriction bearing is fixed respectively wind distribution cone both sides.

Preferably, the impurity removing device comprises an impurity discharging pipe, a pneumatic gate valve and an access door, the upper end of the impurity discharging pipe is communicated with the lowest point of the air inlet pipe, the lower end of the impurity discharging pipe is provided with the access door, the access door is connected through a hinge, the hand wheel is locked, and the pneumatic gate valve is arranged on the impurity discharging pipe.

Preferably, the air inlet pipe is of a U-shaped structure, the impurity outlet pipe is connected to the bottom of the elbow section of the air inlet pipe, and the inclination angle of the impurity outlet pipe is 30-60 degrees.

Preferably, the impurity removing device further comprises: and the collecting container is arranged right below the impurity discharging position of the impurity removing device.

The invention at least comprises the following beneficial effects: through the matching of the scattering device and the scattering device, materials and impurities can be effectively separated in the continuous production process, the impurity is prevented from blocking a bed layer, and the production efficiency is improved; and the device is provided with a pneumatic porous gate valve, a pneumatic gate valve, a quick-opening cleaning opening and a sundry collecting device, so that sundries can be cleaned under the non-stop condition, and the continuous operation of the drying equipment is realized.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

FIG. 1 is a schematic structural diagram of an impurity removing device according to one embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a impurity collecting device according to one embodiment of the present invention;

fig. 3 is a schematic structural diagram of a trash removal device according to one embodiment of the present invention.

Detailed Description

The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.

In the description of the present invention, the terms "above", "below", "near-end", "lowest point", "lower part", "vertical", "outside", "end", "upper end", "lower end", "right below", and the like indicate orientations or positional relationships based on those shown in the drawings, merely for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

As shown in fig. 1, the present invention provides an impurity removing apparatus suitable for a continuous fluidized bed drying process, comprising:

the scattering device 1 is arranged above the bed body sieve plate 2, is of a rotary chain type rake tooth structure and is used for scattering and propelling the movement of materials at the front end of the scattering device 1, the air distribution cone 4 is arranged below the bed body sieve plate 2, the air distribution cone 4 is divided into a plurality of sections, all the sections are not communicated with each other, and each section of the air distribution cone 4 is connected with an air inlet pipe 6;

the impurity collecting device 3 is formed by the bed body sieve plate 2 being concave inwards and is arranged in the wind distribution cone 4 at the near tail end of the scattering device 1 along the material conveying direction, the impurity collecting device 3 is of an openable cone-like bucket structure, an inwards concave groove is formed on the bed body sieve plate 2 and is used for accommodating materials and impurities which are scraped by the scattering device 1 and are not fluidized, and the impurity collecting device 3 is opened to clean the impurities after the impurities are accumulated for a certain time;

and the impurity cleaning device 5 is connected to the lowest point of the air inlet pipe 6, the air inlet pipe 6 is communicated with the air distribution cone 4 provided with the impurity collecting device 3, and the impurity cleaning device 5 is of an openable tubular structure, so that impurities discharged from the impurity collecting device 3 enter the air distribution cone 4 and then enter the air inlet pipe 6, and can be discharged to the impurity cleaning device 5 from the lowest point of the air inlet pipe 6 under the combined action of air blowing and gravity.

In above-mentioned technical scheme, the setting is broken up device 1, collection miscellaneous device 3 and clear miscellaneous device 5 for wet material of front end and debris are fully scraped, are broken up, the material of bed body front end is broken up device 1 and is scraped to the end of breaking up device 1, the dry material of fluidization is blown up and is moved to the rear end, the great heavier debris of granule and partial non-fluidization material gathering are in collection miscellaneous device 3, the steerable collection miscellaneous device 3 material pile height of scraping material effect through the rake teeth on breaking up device 1, cooperate the blast air effect of the 3 perforated plates of collection miscellaneous device, can be dry and fluidization the material, realize few long-pending material in the collection miscellaneous device 3, non-long-pending material.

After a certain amount of sundries are accumulated in the sundries collecting device 3, the sundries collecting device 3 and the sundries cleaning device 5 are opened, the sundries fall into the air inlet pipe 6 and then enter the sundries cleaning device 5, after the high-density sundries in the sundries collecting device 3 are discharged, the resistance of a residual material layer in a cone hopper of the sundries collecting device 3 is instantly reduced, most of vinasse accumulated materials entering the sundries collecting device 3 are blown into the boiling chamber 8 again through air blast separation, and secondary selection of vinasse materials in the sundries can be reduced. And then closing the impurity collecting device 3, continuously discharging impurities out of the fluidized bed from the outlet of the impurity cleaning device 5, and then closing the access door to finish one impurity removing process. And when the impurities are accumulated for a certain time again, recycling the impurity removal process.

In another technical scheme, as shown in fig. 2, the impurity collecting device 3 includes an impurity collecting cavity and a pneumatic porous gate valve, the impurity collecting cavity is a porous cone-like bucket structure, the porous structure is favorable for drying and fluidizing the materials in the cavity, the pneumatic porous gate valve is arranged at the lower part of the impurity collecting cavity to control the opening and closing of the impurity collecting cavity, and the impurities accumulated in the impurity collecting cavity can be discharged by opening the pneumatic porous gate valve.

In another technical scheme, the impurity collecting cavity comprises a porous inclined plate 31 and a porous vertical plate 32, the porous inclined plate 31 and the porous vertical plate 32 are arranged oppositely, two sides of the porous inclined plate 31 and two sides of the porous vertical plate 32 are welded on the inner wall of the air distribution cone 4, the porous inclined plate 31 is arranged on one side close to the front end of the bed body, so that fluidized materials can move towards the rear end, the porous vertical plate 32 is arranged on one side far away from the front end of the bed body, impurities are not prone to being blown out of the impurity collecting cavity to enter the rear end of the bed body sieve plate 2, the materials in the impurity collecting cavity can be promoted to move towards the porous inclined plate 31 and be blown up, and dead zones are prevented from being formed in the.

In another technical scheme, the inclination angle of the porous inclined plate 31 is 45-60 degrees, the inclination is moderate, the width of an opening at the upper end of the impurity collecting cavity is reduced, and the impurity content of substances falling into the impurity collecting cavity is increased.

In another technical scheme, the width of the upper end of the impurity collecting cavity is 20-30 cm, and the width of the lower end of the impurity collecting cavity is 10-20 cm, so that the impurity collecting cavity has a proper space for accommodating impurities or non-fluidized materials.

In another technical scheme, the pneumatic gate valve comprises a porous valve plate 33 and a pneumatic assembly 34 for driving the porous valve plate 33 to open and close, the pneumatic assembly 34 controls the porous valve plate 33 to open and close, when sundries accumulated in the sundry collecting cavity need to be removed, the pneumatic assembly 34 is started to open the porous valve plate 33, the sundries in the sundry collecting cavity fall into the air inlet pipe 6, and the sundries are discharged.

In another technical solution, the pneumatic assembly 34 includes a bracket 341, a cylinder 342, a cylinder push plate 343, a limit bolt 344, an arc rod 345, and a pair of rolling bearings 346, the cylinder 342 is fixed outside the wind distribution cone 4, the end of the piston rod of the cylinder 342 is connected to the cylinder push plate 343, the upper end of the arc rod 345 is connected to the rolling bearings 346 through a rotating shaft, the lower end of the arc rod is provided with an arc limit groove 347, the cylinder push plate 343 is clamped in the arc limit groove 347 through the limit bolt 344, the piston rod of the cylinder 342 extends and retracts to drive the arc rod 345 to move, the arc rod 345 drives the rolling bearings 346 to rotate, the rolling bearings 346 drive the porous valve plate 33 to rotate, and the opening and closing of the porous valve plate 33 are controlled through the extension and retraction of the cylinder 342, so as to open and close the impurity.

In another technical scheme, as shown in fig. 3, the impurity removing device 5 comprises an impurity outlet pipe 51, a pneumatic gate valve 52 and an access door 53, wherein the upper end of the impurity outlet pipe 51 is communicated with the lowest point of the air inlet pipe 6, the lower end of the impurity outlet pipe is provided with the access door 53, the access door 53 is connected through a hinge, a hand wheel is locked, and is lined with a silica gel sealing strip, the pneumatic gate valve 52 is arranged on the impurity outlet pipe 51 and is synchronously opened and closed with the porous valve plate 33, impurities enter the air inlet pipe 6 and then enter the impurity outlet pipe 51 at the lowest point, and after the pneumatic gate valve 52 is closed, hot air in a bed is completely isolated from the impurities in the impurity outlet pipe 51, the access door 53 is opened, and the impurities are discharged.

In another technical scheme, the air inlet pipe 6 is of a U-shaped structure, so that sundries can be prevented from flowing back into the air inlet pipe 6, the sundry outlet pipe 51 is connected to the bottom of the elbow section of the air inlet pipe 6, the inclination angle of the sundry outlet pipe 51 is 30-60 degrees, and sundries can be conveniently discharged.

In another technical solution, the impurity removing device 5 further includes: and a collecting container 7 which is arranged right below the impurity discharging of the impurity cleaning device 5 and receives the impurities discharged from the impurity discharging pipe 51.

While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.