Dust recovery device for animal feed processing

Abstract

A kind of dust recovery device for animal feed processing, including pulse cloth bag dust collector shell, the pulse cloth bag dust collector shell is equipped with air inlet pipe hole and air outlet pipe hole, the pulse cloth bag dust collector shell is installed with reversible closure cover, the closure cover is installed with electromagnetic pulse valve, the electromagnetic pulse valve is equipped with multiple pulse ducts, the pulse cloth bag dust collector shell is equipped with at least one group of slidable keel group, keel group is composed of upper keel and lower keel, the upper keel and lower keel are equipped with dust removal bag, dust-containing gas is filled into pulse cloth bag dust collector shell from air inlet pipe hole, dust is filtered on dust removal bag by the action of electromagnetic pulse valve and pulse duct, clean air is discharged from air outlet pipe hole, dust removal bag is synchronously taken out by the automatic movement of keel group, the effect of regular replacement is realized, manual operation steps are reduced, and replacement efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of feed dust recovery technology, and specifically to a dust recovery device for animal feed processing. Background Technology

[0002] Animal feed refers to food or raw materials provided to animals (including livestock, poultry, aquatic products, pets, etc.) that can meet their nutritional needs and promote healthy growth. Scientifically formulated feed can meet the protein, energy, vitamin and mineral requirements of animals at different growth stages. By optimizing the formula, waste can be reduced, feed conversion ratio (FCR) can be improved, and breeding costs can be reduced.

[0003] The processing of animal feed involves basic steps such as raw material receiving, crushing, batching, mixing, granulation, cooling, and collection. In the crushing process, the hammer mill uses high-speed rotating hammers to strike the raw materials, which inevitably generates a large amount of dust. Especially when the required particle size is fine, the mixing and scattering of various raw materials can also cause dust to fly, especially when adding trace components (such as vitamins and minerals).

[0004] When dust reaches a certain concentration in the air (usually 20-50 g / m³) and encounters a source of ignition, it may cause an explosion. Long-term inhalation of feed dust can lead to occupational diseases such as pneumoconiosis in workers. Furthermore, dust deposits on equipment surfaces can affect heat dissipation, accelerate mechanical wear, cause short circuits in electrical equipment, and affect production efficiency and product quality. Therefore, dust recovery is necessary.

[0005] Conventional feed mills use pulse jet bag filters to recover dust. In daily use, the filter bags inside the pulse jet bag filter are used to filter dust and need to be replaced regularly. During the replacement process, workers need to manually pull out the frame inside the filter bag and then take the filter bag out along with it, which is labor-intensive and has low replacement efficiency.

[0006] Therefore, this invention proposes a dust recovery device for animal feed processing to achieve automated ejection of the keel and improve replacement efficiency. Summary of the Invention

[0007] In response to the problems raised in the background art, the present invention provides a dust recovery device for animal feed processing, which will be further described below.

[0008] A dust recovery device for animal feed processing includes a pulse jet bag filter housing. The pulse jet bag filter housing has an inlet pipe and an outlet pipe. The pulse jet bag filter housing is equipped with a flip-up sealing cover. An electromagnetic pulse valve is installed on the sealing cover. The electromagnetic pulse valve has multiple pulse pipes. The pulse jet bag filter housing is equipped with at least one set of sliding keel assemblies, which consists of an upper keel and a lower keel. Dust collection bags are installed on the upper keel and the lower keel.

[0009] Preferably, the pulse bag filter housing is provided with a support frame, the support frame is provided with multiple movable frames, an upper keel is snapped onto the movable frame, a lower keel is provided on the upper keel, the upper keel and the lower keel are nested and slidably connected, a dust collection bag is provided outside the skeleton of the upper keel and the lower keel, the support frame is provided with a mounting frame, the mounting frame is placed between the support frame and the pulse bag filter housing, the mounting frame is provided with a second servo motor, the second servo motor is keyed to a screw, the screw is provided with a drive block, the drive block is pressed and engaged with the movable frame to achieve the automatic ejection effect of the keel assembly.

[0010] Preferably, a first servo motor is mounted on the mounting bracket, a drive screw is keyed to the first servo motor, a slider is provided on the drive screw, and the slider is keyed to a second servo motor to realize the positioning action of each moving bracket.

[0011] Preferably, the lower keel is provided with a connecting frame, the number of which matches the number of movable frames. The connecting frame is in contact with the movable frame. The upper keel is provided with two symmetrically distributed guide posts, and two symmetrically distributed synchronous pulleys are provided on the guide posts. The synchronous pulleys are provided with rotating gears. The connecting frame is provided with two symmetrically distributed clamping frames, and a synchronous belt is provided between the clamping frames and the synchronous pulleys. The connecting frame is provided with two symmetrically distributed connecting racks, and the connecting racks mesh with the rotating gears. The connecting frame is provided with a guide rod, and a connecting spring is compressed between the connecting frame and the upper keel. The connecting spring is wound around the guide rod. The connecting frame is provided with two symmetrically distributed telescopic members, and a return spring is provided between the telescopic members and the connecting frame. The movable frame has two symmetrically distributed slides with inclined surfaces at the slide openings. The connecting frame, telescopic members, and return springs are all slidably connected within the slides of the movable frame. The telescopic part of the telescopic member protrudes from the slide opening of the movable frame, and the telescopic part of the telescopic member presses against the drive block to achieve the clamping action on the bottom of the dust collector bag.

[0012] Preferably, the pulse bag filter housing is provided with multiple unlocking hooks, the number of which matches the number of upper keels and is arranged on one side of the top of the upper keel. The unlocking hooks cooperate with the lower keel to realize that the clamping frame can release the clamping of the bottom of the dust collector bag.

[0013] Preferably, the pulse bag filter housing is provided with two symmetrically distributed guide frames, and a lifting frame is provided between the two guide frames. The lifting frame is provided with a top column, and the guide frame is provided with a counterweight. The counterweight is connected to the lifting frame by a pull rope, which is connected through the guide frame to achieve a local bulge at the bottom of the dust bag.

[0014] Beneficial effects: Compared with the prior art, the present invention uses a second servo motor to start the screw, drive block and moving frame to move upward, which in turn moves the upper keel, lower keel and dust bag upward, realizing the automatic upward movement of the keel assembly to the top of the pulse bag dust collector housing, avoiding manual operation and improving replacement efficiency; through the clamping assembly, the lower keel is first disengaged from the bottom of the dust bag, which is convenient for clamping the bottom of the dust bag; through the lifting assembly, the bottom of the dust bag is partially raised in advance before the clamping assembly is activated, which is convenient for the clamping frame to clamp the bottom of the dust bag, and then they move together to the top of the pulse bag dust collector housing; through the unlocking assembly, the clamping assembly releases the clamping assembly from the dust bag, which is convenient for workers to replace the dust bag. Attached Figure Description

[0015] Figure 1 : A three-dimensional structural schematic diagram of the present invention;

[0016] Figure 2 : A schematic diagram of the structure of the sealing cap, electromagnetic pulse valve, pulse pipeline and other components of this invention;

[0017] Figure 3 : A schematic diagram of the structure of the components related to the automated movement of the keel assembly in this invention.

[0018] Figure 4 : A schematic diagram of the structure of the first servo motor, slider, screw, and other components of this invention;

[0019] Figure 5 : A schematic diagram of the keel assembly of the present invention;

[0020] Figure 6 : A schematic diagram of the structure of the relevant components of the clamping assembly of the present invention;

[0021] Figure 7 This invention includes a schematic diagram of the structure of the connecting spring, connecting rack, guide rod, and other related components.

[0022] Figure 8 : A schematic diagram of the structure of the clamping frame, rotating gear, and timing belt and other related components of this invention;

[0023] Figure 9 : A schematic diagram of the structure of the relevant components of the lifting assembly of this invention;

[0024] In the diagram: 1-Pulse jet bag filter housing, 11-Sealed cover, 12-Electromagnetic pulse valve, 13-Pulse pipe, 14-Drive screw, 141-Mounting bracket, 15-First servo motor, 151-Second servo motor, 16-Slider, 17-Screw, 18-Moving frame, 19-Drive block, 110-Lower keel, 111-Upper keel, 112-Dust bag, 113-Support frame, 114-Inlet pipe hole, 115-Outlet pipe hole, 2-Connecting frame, 201-Guide column, 202-Guide rod, 21-Telescopic component, 22-Reset spring, 23-Clamping frame, 24-Rotating gear, 25-Connecting spring, 26-Connecting rack, 27-Synchronous belt, 28-Synchronous pulley, 29-Unlocking hook, 3-Top column, 31-Guide frame, 32-Counterweight block, 33-Pull rope, 34-Lifting frame. Detailed Implementation

[0025] Next, combine Figures 1-9 A specific embodiment of the present invention will be described in detail below.

[0026] refer to Figures 1-3 A dust recovery device for animal feed processing includes a pulse jet bag filter housing 1. The housing 1 has an inlet pipe 114 and an outlet pipe 115. A flip-up sealing cover 11 is mounted on the housing 1. An electromagnetic pulse valve 12 is mounted on the sealing cover 11. The electromagnetic pulse valve 12 is equipped with multiple pulse pipes 13. At least one set of slidable keel assemblies is provided inside the housing 1. Each keel assembly consists of an upper keel 111 and a lower keel 110. Dust collection bags 112 for filtering dust are fitted on the upper keel 111 and the lower keel 110. The dust collection bags 112 move with the keel assembly. The pulse pipe 13 is suspended on the top of the upper keel 111. Dust-laden gas is injected into the pulse bag dust collector housing 1 through the air inlet 114. Through the action of the electromagnetic pulse valve 12 and the pulse pipe 13, the dust is filtered onto the dust collection bags 112. Clean air is discharged from the air outlet 115. The dust collection bags 112 can be synchronously carried out by the automatic movement of the keel assembly, so as to achieve the effect of periodic replacement, reduce manual operation steps, and improve replacement efficiency.

[0027] refer to Figure 3To achieve automated movement of the keel assembly, a support frame 113 is fixedly connected to the inner cavity of the pulse bag dust collector housing 1. At least one movable frame 18 is slidably connected to the support frame 113. Multiple snap-fit ​​units are opened on the movable frame 18, and an upper keel 111 is snapped into each snap-fit ​​unit. A lower keel 110 is slidably connected to the bottom of each upper keel 111. That is, the upper keel 111 and the lower keel 110 are nested and slidably connected. The upper keel 111 and the lower keel 110 cooperate to form a complete keel. A dust collection bag 112 is fitted on the outer wall of the frame of the upper keel 111 and the lower keel 110. The upper keel 111 and the lower keel 110 serve as a support frame, and the dust collection bag 112 is used to isolate particulate matter in the dust-laden gas to form a filtration channel.

[0028] The replacement of the dust bag 112 depends on the movement of the upper keel 111 and the lower keel 110. The movement of the upper keel 111 and the lower keel 110 depends on the movement of the moving frame 18. To realize the movement of the moving frame 18, mounting frames 141 are fixedly connected to both sides of the support frame 113. The mounting frames 141 are placed between the support frame 113 and the pulse bag dust collector housing 1. A second servo motor 151 is provided on the mounting frame 141. A screw 17 is keyed to the output shaft of the second servo motor 151. A drive block 19 is threadedly connected to the bottom of the screw 17. The top of the drive block 19 is pressed against the bottom of the moving frame 18. The purpose is to lift the moving frame 18 by pressing it with the movement of the drive block 19, thereby lifting the upper keel 111.

[0029] When the sealing cover 11 is closed, the dust-laden gas is injected into the pulse bag dust collector housing 1 through the air inlet 114. The electromagnetic pulse valve 12 is activated, the dust is filtered onto the dust bag 112, and the clean air is discharged through the air outlet 115.

[0030] During replacement, the sealing cover 11 is opened, the second servo motor 151 is activated, the screw 17 rotates, the drive block 19 moves upward and presses against the moving frame 18, the moving frame 18 moves upward under control, and the upper keel 111, lower keel 110 and dust bag 112 move upward in linkage. That is, the upper keel 111, lower keel 110 and dust bag 112 are separated from the support frame 113 as a whole. The automatic movement of the keel group is realized through mechanical linkage, avoiding manual operation and improving replacement efficiency.

[0031] As described above, at least one movable frame 18 is slidably connected to the support frame 113. Multiple snap-fit ​​units are provided on the movable frame 18, each containing a dust bag 112 and a frame assembly. The core purpose is to achieve flexible layout and efficient collaborative operation of the modular filter units. Simultaneously, the dust bags 112 within the multiple snap-fit ​​units independently undertake the task of intercepting particulate matter in localized areas. Each dust bag 112 on the movable frame 18 can be disassembled and replaced, allowing for individual cleaning of each dust bag 112 on the movable frame 18. The system allows for independent positioning and replacement. A first servo motor 15 is mounted on the mounting frame 141. A drive screw 14 is keyed to the first servo motor 15, and a slider 16 is threaded onto the drive screw 14. The slider 16 is keyed to a second servo motor 151. The purpose is to position each movable frame 18 individually using the slider 16, thereby lifting and replacing the upper keel 111, lower keel 110, and dust bag 112 on the positioned movable frame 18, achieving the effect of orderly replacement of the dust bag 112.

[0032] During the replacement process, the movable frame 18 is positioned one by one, and then the positioned movable frame 18 is lifted and replaced individually. The complete steps of this process are as follows: the first servo motor 15 is activated first, driving the lead screw 14 to rotate, and the slider 16 is moved under control to position the movable frame 18 one by one. The second servo motor 151, the screw 17 and the movable frame 18 move with the slider 16.

[0033] Then, the first servo motor 15 is turned off, and the second servo motor 151 is started. The screw 17 rotates, the drive block 19 moves upward and presses against the positioned moving frame 18. The moving frame 18 moves upward under control, which in turn moves the upper keel 111, the lower keel 110 and the dust bag 112 upward. That is, the upper keel 111, the lower keel 110 and the dust bag 112 are separated from the support frame 113 as a whole, so as to achieve the effect of individually positioning and replacing the dust bag 112 on each moving frame 18.

[0034] Specifically, the first servo motor 15 and the second servo motor 151 in this device are independently installed outside the support frame 113, in order to prevent dust-laden gas inside the support frame 113 from interfering with the operation of the first servo motor 15 and the second servo motor 151 and the operation of related linkage components.

[0035] The purpose of moving the upper keel 111, lower keel 110, and dust bag 112 upwards is to move the dust bag 112 to the top of the pulse bag dust collector housing 1 for replacement. The replacement of the dust bag 112 requires separation from the upper keel 111 and lower keel 110. This device uses a clamping assembly to separate the bottom of the dust bag 112 from the lower keel 110 before the upper keel 111, lower keel 110, and dust bag 112 move upwards, and then move them together to a higher position for further separation.

[0036] refer to Figure 6The clamping assembly includes a connecting frame 2 that snaps into the bottom of the lower keel 110. The number of connecting frames 2 matches the number of movable frames 18, and the connecting frames 2 are in contact with the top of the movable frames 18.

[0037] refer to Figure 8 The bottom of the upper keel 111 is fixed with two symmetrically distributed guide posts 201, and two symmetrically distributed synchronous pulleys 28 are rotatably connected to the guide posts 201. A rotating gear 24 is fixed to the synchronous pulleys 28. The bottom of the connecting frame 2 is rotatably connected with two symmetrically distributed clamping frames 23. The clamping frames 23 are used to clamp the bottom of the dust collection bag 112. A synchronous belt 27 is provided between the clamping frame 23 and the synchronous pulleys 28. The rotation of the synchronous pulleys 28 is transmitted to the clamping frame 23 through the synchronous belt 27.

[0038] The rotation of the synchronous pulley 28 depends on the rotation of the rotating gear 24. To achieve the rotation of the rotating gear 24, two symmetrically distributed connecting racks 26 are fixedly connected to the bottom of the connecting frame 2. The connecting racks 26 mesh with the rotating gear 24. The connecting frame 2 passes through the bottom of the upper keel 111 and extends downward. A guide rod 202 is fixedly connected to the bottom of the connecting frame 2. A connecting spring 25 is compressed between the connecting frame 2 and the upper keel 111. The connecting spring 25 is wound around the guide rod 202.

[0039] refer to Figure 7 Two symmetrically distributed telescopic members 21 are fixedly connected to the connecting frame 2. A return spring 22 is compressed between the telescopic end of the telescopic member 21 and the connecting frame 2. Two symmetrically distributed slides are opened on the moving frame 18. An inclined surface is provided at the slide opening. In one section of the connecting frame 2, the telescopic member 21 and the return spring 22 are slidably connected in the slide of the moving frame 18. The telescopic part of the telescopic member 21 protrudes from the slide opening of the moving frame 18. The telescopic part of the telescopic member 21 can be pressed and engaged with the top of the driving block 19. That is, when the driving block 19 moves upward, it first presses the telescopic part of the telescopic member 21, and then presses the moving frame 18.

[0040] As the drive block 19 moves upward, it first squeezes the telescopic part of the telescopic component 21. The telescopic part of the telescopic component 21 moves upward, the return spring 22 deforms, the telescopic component 21 moves upward, the connecting frame 2 moves upward in a controlled manner, and the lower keel 110, guide rod 202 and connecting rack 26 move upward synchronously. The lower keel 110 moves upward and disengages from the bottom of the dust bag 112. At this time, the upper keel 111 and guide post 201 remain stationary. The key point of this step is that by squeezing the telescopic part of the telescopic component 21 through the drive block 19, the lower keel 110 moves upward a certain distance in advance, that is, the lower keel 110 disengages from the bottom of the dust bag 112 first, so as to avoid the clamping action of the clamping frame 23 in the future.

[0041] As the connecting rack 26 moves upward and meshes with the rotating gear 24, the rotating gear 24 rotates, and the synchronous pulley 28 rotates under control. Under the action of the synchronous belt 27, the two clamping frames 23 rotate towards each other to clamp the bottom of the dust collection bag 112.

[0042] The telescopic part of the telescopic component 21 moves upward to the slide opening of the moving frame 18, that is, the telescopic part of the telescopic component 21 is flush with the slide opening of the moving frame 18. At this time, the drive block 19 continues to move upward, while squeezing the telescopic component 21 and the moving frame 18, so that the moving frame 18, the telescopic component 21 and the connecting frame 2 move upward at the same rate. At this time, the upper keel 111, the guide column 201, the rotating gear 24, the synchronous wheel 28, the synchronous belt 27, the two clamping frames 23, the lower keel 110 and the dust bag 112 move upward at the same rate, that is, the two clamping frames 23 maintain the clamping state on the bottom of the dust bag 112 and move upward.

[0043] When the dust bag 112 moves to the top of the pulse bag dust collector housing 1, it is necessary to release the clamping state of the two clamping frames 23 on the bottom of the dust bag 112 to facilitate the worker to peel off and replace the dust bag 112. Therefore, this device uses an unlocking component to realize the clamping action of the two clamping frames 23 on the bottom of the dust bag 112.

[0044] refer to Figure 3 The unlocking component includes multiple detachable unlocking hooks 29 connected to the top of the pulse bag dust collector housing 1. The number of unlocking hooks 29 matches that of the upper keel 111, and they are all arranged on one side of the top of the upper keel 111. The unlocking hooks 29 can cooperate with the lower keel 110. By cooperating with the lower keel 110, the clamping frame 23 can release the clamping of the dust collector bag 112.

[0045] When the upper keel 111, lower keel 110, and dust bag 112 move to the top of the pulse bag dust collector housing 1, the lower keel 110 engages with the unlocking hook 29. Due to the restriction of the unlocking hook 29, the lower keel 110 no longer moves upward, that is, the lower keel 110 remains stationary, and the linkage guide rod 202 and connecting rack 26 remain stationary. At this time, the upper keel 111 continues to move upward, that is, the guide column 201, synchronous wheel 28, rotating gear 24, and clamping frame 23 move upward. The rotating gear 24 moves upward and meshes with the connecting rack 26 in the opposite direction, causing the two clamping frames 23 to rotate in the opposite direction. As a result, the two clamping frames 23 release the clamping on the bottom of the dust bag 112. At this time, the lower keel 110 has also released the support for the bottom of the dust bag 112, which makes it easy for the worker to manually detach the dust bag 112 from the upper keel 111 and lower keel 110.

[0046] refer to Figure 9Before the two clamping frames 23 clamp the bottom of the dust bag 112, this device uses a lifting component to partially raise the bottom of the dust bag 112 to facilitate clamping by the two clamping frames 23. The lifting component includes two symmetrically distributed guide frames 31 installed in the housing 1 of the pulse bag dust collector. A lifting frame 34 is slidably connected between the two guide frames 31. The lifting frame 34 is provided with a top column 3 that can cooperate with the lower keel 110. The purpose is to move the top column 3 by moving the lifting frame 34, and use the lifting effect of the top column 3 on the bottom of the dust bag 112 to achieve the effect of partially raising the bottom of the dust bag 112.

[0047] A counterweight 32 is slidably mounted on the guide frame 31. The counterweight 32 is connected to the lifting frame 34 by a certain length of pull rope 33. The pull rope 33 is connected through the guide frame 31. The purpose is to achieve the opposite movement effect of the counterweight 32 and the lifting frame 34 through the pull rope 33.

[0048] When the keel assembly is installed, the lower keel 110 moves down to contact the top column 3 on the lifting frame 34, and is then installed in place. At this time, the lower keel 110 and the top column 3 on the lifting frame 34 are pressed together and this pressing state is maintained. The lifting frame 34 moves down, and the counterweight 32 moves up under the action of the pull rope 33.

[0049] During replacement, the drive block 19 presses the telescopic part of the telescopic component 21, causing the lower keel 110 to move upward a certain distance in advance. That is, the lower keel 110 first separates from the bottom of the dust bag 112. The lower keel 110 moves upward and separates from the top column 3 on the lifting frame 34. Under the action of the counterweight block 32, the top column 3 on the lifting frame 34 moves upward, lifting the bottom of the dust bag 112. That is, the bottom of the dust bag 112 bulges. Then, the connecting rack 26 moves upward and meshes with the rotating gear 24. The rotating gear 24 rotates, and the synchronous wheel 28 rotates under control. Under the action of the synchronous belt 27, the two clamping frames 23 rotate towards each other to clamp the bottom of the dust bag 112, thereby realizing the clamping action of the clamping frame 23.

[0050] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A dust recovery device for animal feed processing, comprising a pulse jet bag filter housing, wherein the pulse jet bag filter housing is provided with an inlet pipe and an outlet pipe, and a flip-up sealing cover is installed on the pulse jet bag filter housing; an electromagnetic pulse valve is installed on the sealing cover, and the electromagnetic pulse valve is provided with multiple pulse pipes, characterized in that: The pulse bag filter housing is provided with at least one set of slidable keel groups, which consist of an upper keel and a lower keel, and dust collection bags are provided on the upper keel and the lower keel. The pulse bag filter housing is provided with a support frame, and the support frame is provided with multiple movable frames. An upper keel is snapped onto the movable frame, and a lower keel is provided on the upper keel. The upper keel and the lower keel are nested and slidably connected. A dust collection bag is provided outside the skeleton of the upper keel and the lower keel. The support frame is provided with a mounting frame, and the mounting frame is placed between the support frame and the pulse bag filter housing. A second servo motor is provided on the mounting frame, and a screw is keyed to the second servo motor. A drive block is provided on the screw, and the drive block is pressed and engaged with the movable frame. The lower keel is equipped with a connecting frame, the number of which matches the number of movable frames. The connecting frame is in contact with the movable frame. The upper keel is equipped with two symmetrically distributed guide posts, and two symmetrically distributed synchronous pulleys are provided on the guide posts. The synchronous pulleys are equipped with rotating gears. The connecting frame is equipped with two symmetrically distributed clamping frames, and a synchronous belt is provided between the clamping frames and the synchronous pulleys. The connecting frame is equipped with two symmetrically distributed connecting racks, which mesh with the rotating gears. The connecting frame is equipped with a guide rod, and a connecting spring is compressed between the connecting frame and the upper keel. The connecting spring is wound around the guide rod. The connecting frame is equipped with two symmetrically distributed telescopic members, and a return spring is provided between the telescopic members and the connecting frame. The movable frame has two symmetrically distributed slides with inclined surfaces at the slide openings. The connecting frame, telescopic members, and return springs are all slidably connected within the slides of the movable frame. The telescopic part of the telescopic member protrudes from the slide opening of the movable frame, and the telescopic part of the telescopic member is in a pressing fit with the drive block.

2. The dust recovery device for animal feed processing according to claim 1, characterized in that: The mounting bracket is equipped with a first servo motor, which is keyed to a drive screw. The drive screw is equipped with a slider, which is keyed to a second servo motor.

3. The dust recovery device for animal feed processing according to claim 1, characterized in that: The pulse bag filter housing is provided with multiple unlocking hooks, the number of which matches the number of upper keels, and all of which are configured on one side of the top of the upper keel. The unlocking hooks cooperate with the lower keel.

4. The dust recovery device for animal feed processing according to claim 1, characterized in that: The pulse bag filter housing is provided with two symmetrically distributed guide frames, and a lifting frame is provided between the two guide frames. The lifting frame is provided with a top column, and the guide frame is provided with a counterweight. The counterweight is connected to the lifting frame by a pull rope, and the pull rope is connected to the guide frame through the guide frame.

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