Airflow classification equipment capable of preventing material blockage

Abstract

The invention relates to the technical field of airflow classification, in particular to airflow classification equipment capable of preventing material blockage, which comprises a classification barrel, a feeding pipe, a dispersion mechanism and a transmission mechanism, the dispersing mechanism is arranged at the bottom of the feeding pipe, is used for enabling cake particles in the feeding pipe to enter the grading barrel in a spaced and dispersed manner and comprises a rotating vertical pipe arranged on the inner side of the feeding pipe and an intermittent discharging disc rotationally arranged at the bottom of the rotating vertical pipe in a sleeving manner and matched with the feeding pipe; an annular material blocking plate matched with the bottom of the feeding pipe is arranged at the bottom of the intermittent discharging disc. According to the invention, cake particles are uniformly and properly dispersed into the grading cylinder, the risk of collision and crushing of the edges of the cake particles is reduced, the integrity of the particles can be effectively maintained, the consistency of products is ensured, the quality of the products is improved, and meanwhile, each part of cake particles can be accurately treated in the grading process, so that the production efficiency is improved. And the accumulation condition of cake meal particles is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of air classification, and particularly to an air classification device capable of preventing material blockage. Background Art

[0002] In the process of dry protein extraction using grains, beans, and oil-extracted cake as raw materials, the size of the broken cake particles is crucial. Currently, an air classification device is used to separate particles of different particle sizes, remove non-protein components such as fiber and starch in the cake, and ensure the high purity of the extracted protein; when the cake particles fall on the rotating dispersion disk through the feed inlet, under the action of centrifugal force, the particles hit the baffle ring and then fall into the classification area. However, some cake particles are prone to being bumped at the edge when hitting the rotating baffle ring, reducing the integrity and appearance quality of the particles, and even causing the particles to break, resulting in a decrease in the protein extraction rate and an increase in cost losses. Summary of the Invention

[0003] In order to overcome the deficiencies of the prior art, the present invention provides an air classification device capable of preventing material blockage, solving the problem in the prior art that the cake particles are impacted and even broken when being dispersed.

[0004] To solve the above technical problems, the present invention provides the following technical solutions:

[0005] An air classification device capable of preventing material blockage, including a classification cylinder, a feed pipe, a dispersion mechanism, and a transmission mechanism. The top of the feed pipe penetrates through the top of the classification cylinder and is rotatably connected thereto. The dispersion mechanism is arranged at the bottom of the feed pipe for enabling the cake particles in the feed pipe to enter the classification cylinder at intervals and dispersedly. The dispersion mechanism includes a rotating vertical pipe arranged inside the feed pipe, and an intermittent blanking disk rotatably sleeved at the bottom of the rotating vertical pipe. An annular baffle is provided at the bottom of the intermittent blanking disk, and a plurality of circumferentially arrayed discharge slots I are opened on the intermittent blanking disk. A plurality of circumferentially arrayed discharge slots II are opened on the annular baffle. The number of discharge slots I is the same as that of discharge slots II and they are arranged staggered with each other. A support dome is fixed at the bottom of the annular baffle. A dispersion disk with a trapezoidal cross-section is in contact with the bottom of the support dome. The cake particles fall onto the dispersion disk when the discharge slots I and II are communicated. A linkage assembly is provided at the top of the support dome for driving the intermittent blanking disk to rotate intermittently. Among them, a transmission vertical shaft is fixed at the bottom of the rotating vertical pipe and penetrates through the support dome and rotates with it.

[0006] As a further optimized solution of the present invention, a cross connection frame fixed to the bottom of the dispersion disk is fixed on the transmission vertical shaft. Two inclined connecting plates are provided at the bottom of the discharge slot II. The two ends of the connecting plates are respectively fixed to the support dome and the classification cylinder, and the bottom surface of the connecting plate is set as an arc surface.

[0007] As a further optimized solution of the present invention, a support tube is fixedly installed at the inner bottom of the support dome, passing through and rotating with the dispersion plate. A support disc matching the bottom of the dispersion plate is fixedly installed at the bottom of the support tube. A contact soft pad is fixedly installed on the outer side of the top of the dispersion plate. The contact soft pad includes a plurality of concave-convex rings, and adjacent two concave-convex rings are fixedly connected to each other.

[0008] As a further optimized solution of the present invention, the linkage assembly includes a grooved pulley installed on one side of the top of the support dome, a movable pin fixed to the bottom of the rotating vertical tube and matching with the grooved pulley, and a rotating vertical shaft fixed to the axis of the grooved pulley and rotatably connected to the support dome through a bearing at the bottom. A driving gear is fixedly installed at the top of the rotating vertical shaft, and a driven toothed ring fixed to the bottom of the intermittent blanking disc is meshed with one side of the driving gear.

[0009] As a further optimized solution of the present invention, a discharge pipe is installed at the bottom of the classification cylinder. A sealed discharge assembly for keeping the bottom of the classification cylinder sealed and discharging materials is installed inside the discharge pipe. The sealed discharge assembly includes a limit cover fixed to one side of the discharge pipe, and a driving horizontal shaft rotatably installed inside the discharge pipe through a bearing.

[0010] One end of the driving horizontal shaft penetrates through the discharge pipe and extends into the limit cover. A plurality of sealed baffles arranged in a circumferential array and fitting with the inner wall of the discharge pipe are fixedly installed on the driving horizontal shaft. The sealed baffles rotate around the driving horizontal shaft inside the discharge pipe. The bottom of the driving vertical shaft penetrates through the classification cylinder and extends into the inner side of the limit cover. A gear set is installed between the driving vertical shaft and the driving horizontal shaft for transmission.

[0011] As a further optimized solution of the present invention, a connecting ring body is fixedly installed on the outer side of the bottom of the feed pipe. A classification wheel is fixedly installed on the connecting ring body. The classification wheel rotates with the feed pipe through the connecting ring body.

[0012] As a further optimized solution of the present invention, the transmission mechanism is installed on the top of the classification cylinder to drive the feed pipe and the dispersion mechanism to operate synchronously. The transmission mechanism includes a transmission toothed ring fixedly installed on the outer side of the top of the feed pipe, and a transmission gear meshed with one side of the transmission toothed ring.

[0013] A connecting vertical shaft is fixedly installed at the axis of the transmission gear. A synchronous belt one is installed between the top of the connecting vertical shaft and the top of the rotating vertical tube through a belt pulley, so that the rotation directions of the feed pipe and the rotating vertical tube are opposite. A driving member is fixedly installed on one side of the top of the classification cylinder. A synchronous belt two is installed between the output shaft of the driving member and the connecting vertical shaft through a belt pulley.

[0014] By means of the above technical solutions, the present invention provides an air classification device capable of preventing material blockage. Compared with the prior art, it has at least the following beneficial effects:

[0015] 1. The present invention adds the cake meal particles in the feed pipe to the classification cylinder at intervals and dispersedly through the setting of a dispersion mechanism. By driving the intermittent blanking plate to rotate on the annular baffle at intervals, the first discharge chute and the second discharge chute are communicated at intervals. The cake meal particles fall onto the rotating dispersion plate through the first discharge chute and the second discharge chute and are dispersed by centrifugal force, so as to ensure that the cake meal particles are evenly and properly dispersed into the classification cylinder, avoid dispersing the cake meal particles through the rotating baffle ring, reduce the risk of collision and breakage at the edges of the cake meal particles, effectively maintain the integrity of the particles, ensure the consistency of the products, and improve the quality of the products.

[0016] 2. The present invention classifies by adding cake meal particles at intervals. When the cake meal particles fall from the second discharge chute onto the dispersion plate, the two inclined connecting plates can make the particles fall more evenly onto the dispersion plate, which can optimize the air classification process, reduce unnecessary collisions between particles, improve the efficiency and accuracy of classification, and make the cake meal particles more evenly dispersed when dispersed, ensuring that every part of grains, beans, and cake meal after oil extraction can be accurately processed during the classification process, avoiding particles from piling up together, resulting in some particles being subjected to excessive impact force, thus affecting the accuracy of particle size distribution.

[0017] 3. The present invention sets a sealed discharge assembly in the discharge pipe. During discharging, the driving vertical shaft drives the horizontal shaft through a gear combination to drive several sealed baffles to rotate. While the cake meal particles are discharged, the sealing performance of the discharge pipe can be ensured, preventing the influence on the air flow operation in the classification cylinder, improving the efficiency and stability of the cake meal particles during air classification, and simultaneously rotating the sealed discharge along with the rotation of the dispersion plate to ensure the consistency of classification and discharge, without clogging, and reducing the maintenance cost at the same time.

[0018] 4. The present invention sets a transmission mechanism to synchronously drive the feed pipe and the dispersion mechanism to operate, and ensures that the rotation directions of the feed pipe and the rotating vertical pipe are opposite. Under the reverse rotation of the feed pipe and the rotating vertical pipe, the particles in the feed pipe can effectively avoid the situation of aggregation or poor flow caused by the same rotation direction, ensure the uniform distribution of the cake meal particles and their smooth entry into the classification process, and further reduce the clogging phenomenon and improve the working efficiency of the classification equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present application, form a part of the present application, and the schematic embodiments and descriptions thereof are used to explain the present application, and do not constitute an improper limitation to the present application. In the drawings:

[0020] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 is a front three-dimensional sectional view of the present invention;

[0022] Figure 3 is Figure 2 a schematic enlarged view of part A;

[0023] Figure 4 is a partial explosion schematic diagram of the dispersion mechanism of the present invention;

[0024] Figure 5 is a schematic structural diagram of the transmission mechanism of the present invention;

[0025] Figure 6 is a schematic structural diagram of the linkage assembly of the present invention;

[0026] Figure 7 is an explosion schematic diagram of the sealed discharge assembly of the present invention.

[0027] In the figure: 1, classification cylinder;

[0028] 2, feed pipe; 21, connecting ring body; 22, classification wheel;

[0029] 3, dispersion mechanism; 31, rotating vertical pipe; 32, intermittent feeding tray; 33, annular baffle; 34, discharge chute 1; 35, discharge chute 2;

[0030] 36, support dome; 361, transmission vertical shaft; 362, cross connecting frame; 363, connecting plate;

[0031] 37, dispersion disc; 371, support pipe; 372, support disc; 373, contact soft pad;

[0032] 38, linkage assembly; 381, sprocket; 382, movable pin; 383, rotating vertical shaft; 384, driving gear; 385, driven gear ring;

[0033] 4, transmission mechanism; 41, transmission gear ring; 42, transmission gear; 43, connecting vertical shaft; 44, driving member;

[0034] 5, discharge pipe;

[0035] 6, sealed discharge assembly; 61, limit cover; 62, transmission horizontal shaft; 63, sealing baffle. Specific embodiments

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] First embodiment

[0038] During the current grading process of cake meal particles, since the baffle ring rotates to disperse the particles, it is easy to cause the particles to collide and even break, affecting the integrity and appearance quality of the cake meal particles. In order to reduce the risk of collision and breakage at the edges of the cake meal particles and effectively maintain the integrity of the particles, referring to Figure 1 - Figure 4 , this embodiment provides an air classification device that can prevent material blockage, which is composed of a classification cylinder 1, a feed pipe 2, a dispersion mechanism 3 and a transmission mechanism 4. The top of the feed pipe 2 penetrates through the top of the classification cylinder 1 and is rotatably connected thereto. An annular limiting body fixed to the classification cylinder 1 is provided on the outer side of the top of the feed pipe 2 to support the feed pipe 2 and keep it rotating stably; a feeding hopper fixed to the top of the classification cylinder 1 is provided at the top of the feed pipe 2. First, the cake meal particles are added into the feed pipe 2 through the feeding hopper; a connecting ring body 21 is fixed to the outer side of the bottom of the feed pipe 2, and a classification wheel 22 is fixed on the connecting ring body 21. The classification wheel 22 rotates with the feed pipe 2 through the connecting ring body 21.

[0039] Among them, the top of the classification cylinder 1 has an air discharge port, the middle part of the classification cylinder 1 serves as a classification area, one side of the bottom of the classification cylinder 1 is communicated with an air inlet pipe, and an air pump is externally connected to the air inlet pipe. High-speed air flow is introduced into the classification cylinder 1 through the air inlet pipe. At the same time, the classification wheel 22 rotates to make the air flow form a rotating upward air flow in the classification cylinder 1, and the dispersed cake meal particles are classified according to size. The small particles and impurities are discharged through the air discharge cylinder, and the qualified cake meal particles fall into the discharge cylinder.

[0040] The dispersion mechanism 3 is arranged at the bottom of the feed pipe 2 and is used to intermittently disperse the cake meal particles in the feed pipe 2 into the classification cylinder 1, which can ensure the quality and consistency of the product after classification. The dispersion mechanism 3 includes a rotating vertical pipe 31 arranged inside the feed pipe 2, and an intermittent feeding tray 32 rotatably sleeved at the bottom of the rotating vertical pipe 31. An annular baffle 33 is provided at the bottom of the intermittent feeding tray 32, and four circumferentially arranged discharge slots 34 are opened on the intermittent feeding tray 32. Four circumferentially arranged discharge slots 35 are opened on the annular baffle 33. The number of the discharge slots 34 is the same as that of the discharge slots 35 and they are arranged staggeredly in the vertical direction. A support dome 36 is fixed to the bottom of the annular baffle 33. A dispersion plate 37 with a trapezoidal cross-section is in contact with the bottom of the support dome 36. When the intermittent feeding tray 32 rotates by a certain angle, the discharge slots 34 and the discharge slots 35 are just connected. The cake meal particles in the feed pipe 2 directly fall onto the dispersion plate 37. A transmission vertical shaft 361 is fixed to the bottom of the rotating vertical pipe 31 and penetrates through the support dome 36 and rotates with it. A cross connection frame 362 fixed to the bottom of the dispersion plate 37 is fixed on the transmission vertical shaft 361. When the rotating vertical pipe 31 rotates, the dispersion plate 37 is driven to rotate through the transmission vertical shaft 361 and the cross connection frame 362. At the same time, the dispersion plate 37 disperses the cake meal particles on it into the classification cylinder 1 for efficient classification by air flow.

[0041] At the bottom of the second discharge chute 35, there are two connecting plates 363 arranged obliquely. The cake meal particles falling through the first discharge chute 34 and the second discharge chute 35 respectively fall evenly onto the dispersion plate 37 through the two connecting plates 363, making the dispersion of the cake meal particles more uniform, ensuring that every part of grains, beans, and the cake meal after oil extraction can be accurately processed during the classification process, avoiding particle accumulation. The two ends of the connecting plate 363 are respectively fixed to the support dome 36 and the classification cylinder 1. The bottom surface of the connecting plate 363 is set as an arc surface to prevent blocking the airflow from taking away the dispersed small particles and impurities. At the inner bottom of the support dome 36, there is a support tube 371 fixed through and rotating with the dispersion plate 37. At the bottom of the support tube 371, there is a support disk 372 matching the bottom of the dispersion plate 37. The support dome 36 is fixed in the classification cylinder 1 through the connecting plate 363. The support disk 372 and the support tube 371 can ensure the stable rotation of the dispersion plate 37 at the bottom of the support dome 36, helping to ensure that the dispersion plate 37 generates a stable centrifugal force through rotation to evenly disperse the cake meal particles.

[0042] On the outer side of the top of the dispersion plate 37, there is a contact soft pad 373 fixed. The contact soft pad 373 includes six concave-convex rings, and adjacent two concave-convex rings are fixedly connected. When the cake meal particles are discharged through the second discharge chute 35, they directly fall onto the contact soft pad 373. The contact soft pad 373 increases the friction between the cake meal particles and the dispersion plate 37, so that the cake meal particles will not quickly fall from the dispersion plate 37, and the cake meal particles are dispersed into the classification cylinder 1 through the centrifugal force generated by the rotation of the dispersion plate 37, which can ensure the uniformity of the dispersion of the cake meal particles, thereby improving the effect of air classification.

[0043] Second Embodiment

[0044] In order to make the cake meal particles in the feed pipe 2 fall into the classification cylinder 1 at intervals, ensuring that the cake meal particles are evenly and properly dispersed into the classification cylinder 1, referring to Figure 3 and Figure 6 , on the basis of the first embodiment, in this embodiment, on the top of the support dome 36, there is a linkage assembly 38 for driving the intermittent feeding disk 32 to rotate intermittently. The specific implementation method is that the linkage assembly 38 includes a sprocket 381 arranged on one side of the top of the support dome 36, a movable pin 382 fixed to the bottom of the rotating vertical pipe 31 and matching with the sprocket 381. The movable pin 382 rotates around the axis of the rotating vertical pipe 31, driving the sprocket 381 to rotate intermittently, and a rotating vertical shaft 383 fixed at the axis of the sprocket 381 and rotatably connected to the support dome 36 through a bearing at the bottom. At the top of the rotating vertical shaft 383, there is a driving gear 384, and on one side of the driving gear 384, there is a driven gear ring 385 meshing with the bottom of the intermittent feeding disk 32.

[0045] When the rotating vertical pipe 31 rotates, the grooved pulley 381 is driven to rotate intermittently through the movable pin 382. The grooved pulley 381 drives the driving gear 384 to rotate through the rotating vertical shaft 383. The driving gear 384 drives the intermittent feeding tray 32 to rotate intermittently through the driven gear ring 385, thereby realizing the intermittent communication between the first discharge chute 34 and the second discharge chute 35, and adding the cake meal particles to the classification cylinder 1 at intervals in this way.

[0046] Third Embodiment

[0047] Currently, a rotary air lock valve is installed on the discharge pipe at the bottom of the classification cylinder 1 to control the material flow rate and sealing performance. However, the rotary air lock valve is usually controlled by separate driving, resulting in poor consistency of the cake meal particles during the classification process, and increasing the complexity and maintenance difficulty of the classification equipment. To ensure the efficiency and stability of the classification process and reduce the maintenance cost of the classification equipment, referring to Figure 2 and Figure 7 , in this embodiment, a discharge pipe 5 is provided at the bottom of the classification cylinder 1, and a sealed discharge assembly 6 for maintaining the seal at the bottom of the classification cylinder 1 and discharging materials is provided inside the discharge pipe 5. The specific implementation method is that the sealed discharge assembly 6 includes a limit cover 61 fixed on one side of the discharge pipe 5, and a transmission horizontal shaft 62 rotatably arranged inside the discharge pipe 5 through a bearing. One end of the transmission horizontal shaft 62 penetrates the discharge pipe 5 and extends into the limit cover 61. Eight sealing baffles 63 arranged in a circumferential array and fitting with the inner wall of the discharge pipe 5 are fixed on the transmission horizontal shaft 62. The sealing baffles 63 rotate around the transmission horizontal shaft 62 inside the discharge pipe 5. The bottom of the transmission vertical shaft 361 penetrates the classification cylinder 1 and extends into the inner side of the limit cover 61. A gear set is arranged for transmission between the transmission vertical shaft 361 and the transmission horizontal shaft 62.

[0048] When the rotating vertical pipe 31 drives the transmission vertical shaft 361 to rotate, the transmission vertical shaft 361 drives the transmission horizontal shaft 62 to rotate through the gear set. The transmission horizontal shaft 62 simultaneously drives the eight sealing baffles 63 to rotate, which can ensure the sealing performance of the discharge pipe 5 while discharging the cake meal particles, and discharge materials while following the rotation of the rotating vertical pipe 31. The opening and closing cooperation between the rotating vertical pipe 31 and the eight sealing baffles 63 can make the discharging process smoother and more controllable, contribute to maintaining the stable operation of the classifier, thereby improving the classification accuracy and efficiency, and at the same time simplifying the design of the control system and reducing the complexity of the independent control device.

[0049] Fourth Embodiment

[0050] To avoid the agglomeration or poor flow of particles due to the same rotation direction, and ensure the uniform distribution of the cake meal particles and their smooth entry into the classification process, referring to Figure 2 and Figure 5, the transmission mechanism 4 of this embodiment is installed at the top of the classification cylinder 1 to drive the feeding pipe 2 and the dispersion mechanism 3 to rotate synchronously. The specific implementation method is that the transmission mechanism 4 includes a transmission gear ring 41 fixed to the outer side of the top of the feeding pipe 2. A transmission gear 42 is meshed on one side of the transmission gear ring 41. A connecting vertical shaft 43 is fixed at the axis center of the transmission gear 42. A first synchronous belt is arranged between the top of the connecting vertical shaft 43 and the top of the rotating vertical pipe 31 through pulley transmission. The rotation directions are opposite. The transmission gear 42 is connected to the rotating vertical pipe 31 through the connecting vertical shaft 43 and the first synchronous belt. The rotation directions of the transmission gear 42 and the rotating vertical pipe 31 are the same. Therefore, the rotation directions of the feeding pipe 2 and the rotating vertical pipe 31 are opposite. A driving member 44 is fixedly installed on one side of the top of the classification cylinder 1. The driving member 44 can be set as a servo motor. The output shaft of the driving member 44 and the connecting vertical shaft 43 are provided with a second synchronous belt through pulley transmission.

[0051] When the output shaft of the driving member 44 drives the connecting vertical shaft 43 to rotate through the second synchronous belt, the connecting vertical shaft 43 drives the transmission gear ring 41 to start rotating through the transmission gear 42 at its bottom. The transmission gear ring 41 drives the feeding pipe 2 to rotate on the classification cylinder 1. At the same time, the connecting vertical shaft 43 drives the rotating vertical pipe 31 to rotate through the first synchronous belt. And the feeding pipe 2 and the rotating vertical pipe 31 rotate in opposite directions respectively, preventing the cake meal particles from accumulating and blocking in the feeding pipe 2, and ensuring that the cake meal particles are more evenly discharged.

[0052] In the present invention, the cake meal particles in the feeding pipe 2 are added to the classification cylinder 1 at intervals and dispersedly through the dispersion mechanism 3. The intermittent feeding tray 32 rotates intermittently on the annular baffle 33, so that the first discharge groove 34 and the second discharge groove 35 are intermittently connected. The cake meal particles fall onto the rotating dispersion disk 37 through the first discharge groove 34 and the second discharge groove 35 and are dispersed by centrifugal force, and then are classified by air flow, ensuring that the cake meal particles are evenly and properly dispersed into the classification cylinder 1 and avoiding the risk of collision and breakage at the edges of the cake meal particles.

[0053] During the actual use of this air classification equipment, first, the cake meal particles are added to the feeding pipe 2 through the feeding hopper. Then, the driving member 44 is started. At the same time, high-speed air flow is introduced into the discharge cylinder through the air inlet pipe. The output shaft of the driving member 44 drives the second synchronous belt to operate through the synchronous pulley. The second synchronous belt then drives the connecting vertical shaft 43 to rotate through the synchronous pulley. The connecting vertical shaft 43 drives the transmission gear 42 at its bottom to rotate. The transmission gear 42 drives the transmission gear ring 41 meshed with it to start rotating. The transmission gear ring 41 drives the feeding pipe 2 to rotate on the classification cylinder 1. At the same time, the connecting vertical shaft 43 drives the rotating vertical pipe 31 to rotate through the first synchronous belt. And the feeding pipe 2 and the rotating vertical pipe 31 rotate in opposite directions respectively, preventing the cake meal particles in the feeding pipe 2 from being blocked;

[0054] The movable pin 382 at the bottom of the rotating vertical pipe 31 rotates around it. The movable pin 382 drives the Geneva wheel 381 to rotate intermittently. The Geneva wheel 381 drives the rotating vertical shaft 383 at its axis to start rotating. The rotating vertical shaft 383 drives the driving gear 384 at its top to rotate. The driving gear 384 drives the driven toothed ring 385 meshing with it to rotate. The driven toothed ring 385 drives the intermittent blanking plate 32 to rotate intermittently on the annular baffle 33, thereby realizing the intermittent connection between the first discharge chute 34 and the second discharge chute 35. The cake meal particles fall onto the contact soft pad 373 on the top of the dispersion plate 37 through the first discharge chute 34 and the second discharge chute 35;

[0055] Meanwhile, the rotating vertical pipe 31 drives the transmission vertical shaft 361 at its bottom to rotate. The transmission vertical shaft 361 drives the cross connecting frame 362 on it to rotate. The cross connecting frame 362 drives the dispersion plate 37 on it to rotate. The dispersion plate 37 disperses the cake meal particles on it into the classification cylinder 1. At the same time, the feed pipe 2 drives the classification wheel 22 to rotate through the connecting ring body 21. The rotation of the classification wheel 22 generates negative pressure, causing the air flow to form a rotating upward air flow in the classification cylinder 1. The cake meal particles dispersed by the dispersion plate 37 are classified by the air flow. The small particles and impurities are conveyed to the top of the classification cylinder 1 through the classification wheel 22 and discharged. The qualified cake meal particles fall into the discharge pipe 5 at the bottom of the classification cylinder 1. At the same time, the transmission vertical shaft 361 drives the transmission horizontal shaft 62 to rotate through the gear set at its bottom. The transmission horizontal shaft 62 drives eight sealing baffles 63 to rotate inside the discharge pipe 5 at the same time, ensuring the sealing of the discharge pipe 5 while allowing the cake meal particles to be discharged normally.

[0056] It should be noted that in this article, the terms "including", "comprising" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0057] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An airflow classification device capable of preventing material blockage, characterized in that: It comprises a classification cylinder (1), a feed pipe (2), a dispersion mechanism (3) and a transmission mechanism (4); the top of the feed pipe (2) penetrates through the top of the classification cylinder (1) and is rotatably connected thereto; the dispersion mechanism (3) is arranged at the bottom of the feed pipe (2) and is used to allow the cake particles in the feed pipe (2) to enter the classification cylinder (1) in an intermittent and dispersed manner; The dispersing mechanism (3) comprises a rotating vertical tube (31) arranged inside the feeding tube (2), and an intermittent feeding tray (32) rotatably sleeved on the bottom of the rotating vertical tube (31), an annular material baffle plate (33) is arranged at the bottom of the intermittent feeding tray (32), a plurality of circumferentially arrayed discharge grooves (34) are provided on the intermittent feeding tray (32), a plurality of circumferentially arrayed discharge grooves (35) are provided on the annular material baffle plate (33), the number of the first discharge grooves (34) and the second discharge grooves (35) is the same and they are arranged alternately in the vertical direction; A supporting circular cover (36) is fixed at the bottom of the annular material baffle plate (33), and a dispersion plate (37) with a trapezoidal cross section is provided at the bottom of the supporting circular cover (36). When the first discharge trough (34) is connected to the second discharge trough (35), the cake particles fall onto the dispersion plate (37). A linkage assembly (38) for driving the intermittent unloading plate (32) to rotate intermittently is provided at the top of the supporting circular cover (36). A transmission vertical shaft (361) penetrating the supporting circular cover (36) and rotatably connected thereto is fixed at the bottom of the rotating vertical pipe (31).

2. The airflow classification device capable of preventing material blockage according to claim 1, characterized in that: A cross connecting frame (362) fixed to the bottom of the dispersion plate (37) is fixed on the transmission vertical shaft (361), and two inclined connecting plates (363) are provided at the bottom of the second discharge chute (35), and the two ends of the connecting plates (363) are respectively fixed to the supporting circular cover (36) and the classification cylinder (1), and the bottom surface of the connecting plates (363) is set to be an arc surface.

3. The airflow classification device capable of preventing material blockage according to claim 1, characterized in that: A support tube (371) penetrating the dispersion disk (37) and rotating therewith is fixed to the inner bottom of the support circular cover (36); a support disk (372) matching the bottom of the dispersion disk (37) is fixed to the bottom of the support tube (371); a contact pad (373) is fixed to the outer side of the top of the dispersion disk (37); the contact pad (373) includes a plurality of concave and convex circular rings, and two adjacent concave and convex circular rings are fixedly connected.

4. The airflow classification device capable of preventing material blockage according to claim 1, characterized in that: The linkage assembly (38) comprises a groove wheel (381) arranged on one side of the top of the supporting circular cover (36), a movable pin (382) fixed to the bottom of the rotating vertical tube (31) and matched with the groove wheel (381), and a rotating vertical shaft (383) fixed to the axis of the groove wheel (381) and the bottom of which rotates with the supporting circular cover (36) through a bearing; A driving gear (384) is fixed on the top of the rotating vertical shaft (383), and one side of the driving gear (384) is meshed with a driven gear ring (385) fixed to the bottom of the intermittent unloading tray (32).

5. The airflow classification device capable of preventing material blockage according to claim 1, characterized in that: A discharge pipe (5) is provided at the bottom of the grading cylinder (1), and a sealing discharge assembly (6) for maintaining the sealing of the bottom of the grading cylinder (1) and discharging materials is provided on the inner side of the discharge pipe (5). The sealing discharge assembly (6) comprises a limit cover (61) fixed to one side of the discharge pipe (5), and a transmission transverse shaft (62) rotatably arranged on the inner side of the discharge pipe (5) via a bearing.

6. The airflow classification device capable of preventing material blockage according to claim 5, characterized in that: One end of the transmission transverse axis (62) passes through the discharge pipe (5) and extends into the limiting cover (61). A plurality of sealing baffles (63) arranged in a circumferential array and in contact with the inner wall of the discharge pipe (5) are fixed on the transmission transverse axis (62). The sealing baffles (63) rotate around the transmission transverse axis (62) in the discharge pipe (5). The bottom of the transmission vertical axis (361) passes through the grading cylinder (1) and extends to the inner side of the limiting cover (61). A gear set is arranged between the transmission vertical axis (361) and the transmission transverse axis (62) for transmission.

7. The airflow classification device capable of preventing material blockage according to claim 1, characterized in that: A connecting ring body (21) is fixed to the outer side of the bottom of the feed pipe (2), and a classifying wheel (22) is fixed on the connecting ring body (21). The classifying wheel (22) rotates along with the feed pipe (2) via the connecting ring body (21).

8. The airflow classification device capable of preventing material blockage according to claim 1, characterized in that: The transmission mechanism (4) is installed on the top of the classification cylinder (1) to drive the feed pipe (2) and the dispersion mechanism (3) to operate synchronously, and the transmission mechanism (4) comprises a transmission toothed ring (41) fixed to the outer side of the top of the feed pipe (2), and a transmission gear (42) is meshed on one side of the transmission toothed ring (41).

9. The airflow classification device capable of preventing material blockage according to claim 8, characterized in that: A connecting vertical shaft (43) is fixed at the axis of the transmission gear (42), and a synchronous belt is arranged at the top of the connecting vertical shaft (43) and the top of the rotating vertical tube (31) through a pulley drive, so that the rotation directions of the feeding tube (2) and the rotating vertical tube (31) are opposite.

10. The airflow classification device capable of preventing material blockage according to claim 9, characterized in that: A driving member (44) is fixedly mounted on one side of the top of the grading drum (1), and a second synchronous belt is arranged to connect the output shaft of the driving member (44) and the vertical shaft (43) via a pulley transmission.

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