Vacuum feeding device for making pet food

Abstract

The invention relates to a vacuum feeding device for making pet food, and relates to the technical field of food transportation, the vacuum feeding device comprises a feed bin, a filter is arranged in the feed bin, the filter is located above the feed bin, a discharge port is formed in the bottom end of the feed bin, a discharge door is arranged at the discharge port of the feed bin, an air bag is arranged at the top end of the feed bin, and a vacuum pump is arranged at the top end of the feed bin. The stock bin is communicated with an air inlet pipe and a feeding pipe, the feeding pipe is obliquely arranged, the lower end of the feeding pipe is communicated with the stock bin, the other end of the feeding pipe is communicated with a straight pipe, a feeding valve is arranged on the straight pipe, an air inlet hole is formed in the upper end face of the feeding pipe, a mounting plate is arranged above the air inlet pipe, and a sealing rod is connected to the mounting plate. According to the feeding device, the feeding pipe is obliquely arranged, so that foodstuff particles are obliquely fed into the feed bin, air enters the feeding pipe by opening the air inlet, the foodstuff particles are further conveyed into the feed bin, the situation that the foodstuff particles still exist in the feeding pipe after feeding is completed is avoided, and the feeding efficiency of the foodstuff particles is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of food particle transportation, in particular to a vacuum feeding device for manufacturing pet food. Background Art

[0002] Most pet food raw materials are in granular form. Traditional manual or mechanical loading is prone to generate dust, polluting the workshop environment and even mixing with other production lines, leading to cross-contamination. Therefore, vacuum loading devices are currently used in the market to load food pellets. Food pellets are transported through fully enclosed pipes. The negative pressure environment effectively suppresses dust leakage, keeps the production area clean, and meets food industry hygiene standards.

[0003] The vacuum feeding device for pet food is a device that uses a vacuum pump to generate negative pressure to achieve automated and closed conveying of powdered or granular pet food raw materials. The current pet food vacuum feeding device, driven by compressed air, uses a vacuum generator to generate high vacuum, forming a vacuum airflow. The food particles are sucked into the suction port to form a mist flow, and then reach the hopper of the feeder through the feed pipe. The filter completely separates the food particles from the air to ensure that the subsequent food particles are transported to the receiving equipment.

[0004] Regarding the related technologies mentioned above, when pet food is fed, the food particles gradually enter the silo from the feeding pipe. When the feeding time reaches the set parameters, the compressed air is turned off, the pneumatic vacuum pump cannot generate vacuum, and the feeding process is terminated. At this time, there may be residual food particles in the feeding pipe. These food particles are difficult to enter the silo, and there is a problem of affecting the quality of subsequent food particles during the subsequent feeding process. Therefore, there is an urgent need for a vacuum feeding device for manufacturing pet food to solve the above technical problems. Summary of the Invention

[0005] In order to reduce costs, the present invention provides a vacuum feeding device for manufacturing pet food.

[0006] The present invention provides a vacuum feeding device for producing pet food, which adopts the following technical solutions:

[0007] The utility model provides a kind of vacuum feeding device for manufacturing pet food, including bunker, filter is equipped in the bunker, the filter is located the top end of bunker, discharge port is opened at the bottom end of bunker, discharge door is installed at the discharge port of bunker, the top end of bunker is equipped with through-hole, the upper end surface of bunker is equipped with air pocket, air pocket is communicated with the through-hole of bunker, the top end of bunker is equipped with vacuum pump, vacuum pump is communicated with bunker, the bottom end of bunker is communicated with air inlet pipe and feed pipe, air inlet valve is equipped on the air inlet pipe, the feed pipe is inclined to set, the end of feed pipe height low is communicated with bunker, another end is communicated with straight pipe, feed valve is equipped on the straight pipe, the upper end surface of feed pipe is equipped with a plurality of air inlet holes, air inlet hole is evenly set, the upper side of air inlet pipe is equipped with mounting plate, the lower end surface of mounting plate is fixedly connected with a plurality of sealing rods, sealing rod is set one by one with air inlet hole.

[0008] By adopting the above technical scheme, when the feeding time reaches the set parameter, the vacuum pump is closed, the feed valve is closed, a part of residual food particles in the feed pipe naturally slides under the action of gravity, reduces residual, then the discharge door is opened and the mounting plate is lifted, so that the sealing rod is separated from the air inlet hole, so as to open the air inlet hole, the compressed air enters from the air inlet pipe, is high-speed injected into the feed pipe through the uniformly distributed air inlet hole, forms reverse airflow, blows another part of residual raw materials adhered to the wall of feed pipe, so that it slides to bunker, which is beneficial to improve the feeding efficiency of equipment.

[0009] Optionally, the bottom end of the bunker is provided with a storage tank, the storage tank is provided with a connecting plate, the connecting plate is fixedly connected with a lifting cylinder, the lifting cylinder is vertically arranged, the top end of the piston rod of the lifting cylinder is fixedly connected with the lower end surface of the discharge door, the bunker is a cylindrical cavity, the center of the filter is provided with a connecting pipe, a connecting rod is arranged between the filter and the discharge door, one end of the connecting rod is fixedly connected with the upper end surface of the discharge door, and the other end is threadedly connected with the connecting pipe, the outer side of the filter is circumferentially provided with a connecting shell, the outer side of the connecting shell is circumferentially provided with a connecting ring, a sliding groove is formed in the inner wall of the bunker, the connecting shell is rotatably connected with the bunker, the connecting ring is located at the sliding groove of the bunker, the length of the through-hole of the bunker is consistent with the radius of the filter, and the air pocket is provided with a pulse valve for backblowing the filter.

[0010] By adopting the above technical solution, when the material needs to be discharged after the loading operation is completed, the staff starts the lifting cylinder, and the lifting cylinder drives the discharge door upward, thereby opening the discharge port. The discharge door moves upward, driving the connecting rod upward, and under the connection relationship between the connecting pipe and the connecting rod, the connecting pipe is driven to rotate, thereby driving the entire filter to rotate. At the same time, by quickly opening and closing the pulse valve, the compressed air in the air bag is converted into a short-term and high-efficiency pulse current, so that the compressed air in the air bag is sprayed to the filter at high speed through the through hole at the top of the silo. Since the filter is in a rotating state, the high-pressure airflow will sweep the entire surface of the filter, avoiding incomplete cleaning in local areas due to concentrated airflow or dead corners, which is beneficial to improving the cleaning efficiency of the filter.

[0011] Optionally, a clamping ring is provided circumferentially at the discharge port of the silo, a clamping groove is provided on the clamping ring, the clamping groove is circumferentially opened on the upper end face of the clamping ring, and a clamping block is fixedly connected to the lower end face of the discharge door, and the clamping block is circumferentially arranged. When the discharge door is located at the discharge port of the silo, the clamping block is located at the clamping groove of the clamping ring.

[0012] By adopting the above technical solution, when the food particles are in the loading stage, the discharge door is in a closed state. By coordinating the clamping block and the clamping groove, the sealing between the discharge door and the silo is improved, which is beneficial to improving the loading efficiency of the device.

[0013] Optionally, a rack is provided on the outer circumference of the connecting shell, and a flat plate is provided above the mounting plate, one end of the flat plate is fixedly connected to the silo, a connecting wheel is provided inside the flat plate, the connecting wheel is meshed with the rack, a lifting rod is passed through the center of the connecting wheel, one end of the lifting rod is fixedly connected to the upper end surface of the mounting plate, and the other end is threadedly connected to the connecting wheel, and the mounting plate is slidably connected to the silo.

[0014] By adopting the above technical solution, when discharging is required, the staff starts the lifting cylinder, and the lifting cylinder drives the discharging door upward, thereby opening the discharge port, and at the same time drives the connecting shell to rotate. The connecting shell rotates and drives the connecting wheel to rotate under the action of the rack. Since the mounting plate is slidingly connected to the hopper and the lifting rod is threadedly connected to the connecting wheel, when the connecting wheel rotates, it will synchronously drive the lifting rod upward, thereby driving the mounting plate upward, separating the sealing rod from the air inlet, thereby synchronously improving the efficiency of cleaning the residual food particles on the inner wall of the feed pipe, and is conducive to improving the discharging efficiency.

[0015] Optionally, a limit rod is provided on the side of the lifting rod away from the silo, the limit rod is passed through the flat plate, one end of the limit rod is fixedly connected to the mounting plate, and the other end is slidably connected to the flat plate.

[0016] By adopting the above technical solution and setting a limit rod, the lifting direction of the mounting plate is restricted, thereby ensuring the stability of its movement process and helping to improve the stability of the device.

[0017] Optionally, a plurality of support legs are provided at the bottom end of the silo, and the support legs are evenly arranged.

[0018] By adopting the above technical solution, the support legs are provided to provide more uniform support for the device, which is beneficial to improving the stability of the equipment.

[0019] Optionally, a discharge door is hinged on the storage box.

[0020] By adopting the above technical solution, when the food particles need to be taken out, the staff can simply open the discharge door to achieve the desired effect, which is convenient for operation and helps to improve work efficiency.

[0021] In summary, the present invention includes at least one of the following beneficial technical effects:

[0022] 1. By setting the silo, filter, discharge port, discharge door, through hole, vacuum pump, air inlet pipe, feed pipe, feed valve, air inlet hole, mounting plate and sealing rod, when the feeding time reaches the set parameters, the vacuum pump is turned off, the feed valve is closed, and a part of the residual food particles in the feed pipe naturally slides down under the action of gravity, reducing the residue. Then the discharge door is opened and the mounting plate is lifted to separate the sealing rod from the air inlet hole, thereby opening the air inlet hole. Compressed air enters from the air inlet pipe and is sprayed into the feed pipe at high speed through the evenly distributed air inlet holes, forming a reverse airflow, blowing away the other part of the residual raw materials attached to the wall of the feed pipe, causing them to slide into the silo, which is beneficial to improving the feeding efficiency of the equipment;

[0023] 2. By setting up a material storage box, a connecting plate, a lifting cylinder, a connecting pipe, a connecting rod, a connecting shell and a connecting ring, when the loading operation is completed and the material needs to be discharged, the staff starts the lifting cylinder, and the lifting cylinder drives the discharge door upward, thereby opening the discharge port, and the discharge door moves upward, driving the connecting rod upward, and under the connection relationship between the connecting pipe and the connecting rod, the connecting pipe is driven to rotate, thereby driving the entire filter to rotate, and at the same time, by quickly opening and closing the pulse valve, the compressed air in the air bag is converted into a short-term high-efficiency pulse current, so that the compressed air in the air bag is sprayed to the filter at a high speed through the through hole at the top of the silo, and because the filter is in a rotating state, the high-pressure airflow will sweep the entire surface of the filter, avoiding incomplete cleaning in local areas due to concentrated airflow or dead corners, which is beneficial to improving the cleaning efficiency of the filter;

[0024] 3. The support legs provide a more uniform support for the device, which is beneficial to improving the stability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The present invention is a schematic diagram of the overall structure of a vacuum feeding device for manufacturing pet food.

[0026] Figure 2The present invention is a schematic cross-sectional view of a vacuum feeding device for manufacturing pet food.

[0027] Figure 3 yes Figure 2 Enlarged view of part A.

[0028] Explanation of the accompanying symbols: 1. Material silo; 11. Discharge port; 111. Snap ring; 112. Snap groove; 113. Block; 12. Discharge door; 13. Through hole; 14. Inlet pipe; 15. Inlet valve; 16. Storage box; 161. Discharge door; 17. Connecting plate; 18. Lifting cylinder; 19. Support leg; 2. Loading assembly; 21. Filter; 211. Connecting pipe; 212. Connecting rod; 213. Connecting shell; 214. Connecting ring; 215. Rack; 22. Vacuum pump; 23. Air bag; 24. Feed pipe; 3. Material cleaning assembly; 31. Mounting plate; 32. Straight pipe; 33. Feed valve; 34. Inlet hole; 35. Pulse valve; 36. Sealing rod; 37. Connecting wheel; 371. Lifting rod; 372. Limiting rod; 38. Flat plate. DETAILED DESCRIPTION

[0029] The present invention will be described in further detail below with reference to all the accompanying drawings.

[0030] An embodiment of the present invention discloses a vacuum feeding device for producing pet food.

[0031] Reference Figure 1 、 Figure 2 and Figure 3 A vacuum feeding device for producing pet food includes a silo 1, a feeding assembly 2, and a cleaning assembly 3. The feeding assembly 2 is connected to the silo 1, and the cleaning assembly 3 is connected to the silo 1. The feeding assembly 2 absorbs food particles into the silo 1, and the cleaning assembly 3 removes residual food particles during the feeding process.

[0032] Reference Figure 1 、 Figure 2 and Figure 3 The feeding assembly 2 includes a filter 21 and a vacuum pump 22. The filter 21 is arranged in the silo 1. The filter 21 is located at the top of the silo 1. A discharge port 11 is provided at the bottom of the silo 1. A discharge door 12 is installed at the discharge port 11 of the silo 1. A through hole 13 is provided at the top of the silo 1. An air bag 23 is provided on the upper end surface of the silo 1. The air bag 23 is connected to the through hole 13 of the silo 1. The vacuum pump 22 is arranged at the top of the silo 1. The vacuum pump 22 is connected to the silo 1. The bottom end of the silo 1 is connected with an air inlet pipe 14 and a feed pipe 24. An air inlet valve 15 is provided on the air inlet pipe 14.

[0033] Reference Figure 1 、 Figure 2 and Figure 3Driven by compressed air, vacuum pump 22 generates a high vacuum, creating a vacuum airflow. Food particles are drawn into the intake port, forming a mist flow. This mist then flows through the suction pipe into hopper 1 of the loader. Filter 21 completely separates the food particles from the air, ensuring their subsequent discharge. When the loading time reaches the set parameters, the compressed air is shut off, and vacuum pump 22 ceases to generate a vacuum. Simultaneously, the hopper's discharge gate 12 opens, propelled by the air cylinder, and food particles automatically enter the storage device through discharge gate 12. At this point, compressed air stored in air bag 23 backwashes filter 21, automatically cleaning dust and particles adhering to the filter element. After a period of time, the discharge time can be adjusted, and vacuum pump 22 is restarted to generate a vacuum. Discharge gate 12 closes, and the vacuum loader reloads. This cycle repeats, continuously delivering food particles, achieving automated loading and improving work efficiency. During discharge, the air inlet pipe 14 is opened to allow air from outside hopper 1 to flow in, further improving discharge efficiency.

[0034] Reference Figure 1 、 Figure 2 and Figure 3 The cleaning component 3 includes a mounting plate 31, the feed pipe 24 is arranged at an angle, the lower end of the feed pipe 24 is connected to the silo 1, and the other end is connected to a straight pipe 32, and a feed valve 33 is provided on the straight pipe 32. The upper end surface of the feed pipe 24 is provided with a plurality of air inlet holes 34, and the air inlet holes 34 are evenly arranged. The mounting plate 31 is arranged above the air inlet pipe 14, and the mounting plate 31 has a semi-arc structure. The lower end surface of the mounting plate 31 is fixedly connected to a plurality of sealing rods 36, and the sealing rods 36 are arranged one by one corresponding to the air inlet holes 34.

[0035] Reference Figure 1 、 Figure 2 and Figure 3 When the feeding time reaches the set parameters, the vacuum pump 22 is turned off, the feeding valve 33 is closed, and a part of the residual food particles in the feeding pipe 24 naturally slides down under the action of gravity to reduce the residue. Then the feeding door 12 is opened and the mounting plate 31 is lifted to separate the sealing rod 36 from the air inlet hole 34, thereby opening the air inlet hole 34. Compressed air enters from the air inlet pipe 14 and is sprayed into the feeding pipe 24 at high speed through the evenly distributed air inlet holes 34, forming a reverse airflow, blowing away the other part of the residual raw materials attached to the wall of the feeding pipe 24, causing it to slide into the silo 1, which is beneficial to improving the feeding efficiency of the equipment.

[0036] Reference Figure 1 、 Figure 2 and Figure 3The bottom end of the silo 1 is provided with a storage box 16, and a connecting plate 17 is provided in the storage box 16. A lifting cylinder 18 is fixedly connected to the connecting plate 17. The lifting cylinder 18 is vertically arranged. The top end of the piston rod of the lifting cylinder 18 is fixedly connected to the lower end surface of the discharge door 12. The silo 1 is a cylindrical cavity. A connecting pipe 211 is provided at the center of the filter 21. A connecting rod 212 is provided between the filter 21 and the discharge door 12. One end of the connecting rod 212 is connected to the upper end of the discharge door 12. The filter 21 is fixedly connected to the surface, and the other end is threadedly connected to the connecting pipe 211. A connecting shell 213 is provided on the outer circumference of the filter 21, and a connecting ring 214 is provided on the outer circumference of the connecting shell 213. A sliding groove is provided on the inner wall of the silo 1. The connecting shell 213 is rotatably connected to the silo 1, and the connecting ring 214 is located at the sliding groove of the silo 1. The length of the through hole 13 of the silo 1 is consistent with the radius of the filter 21. The air bag 23 is provided with a pulse valve 35 for backblowing the filter 21.

[0037] Reference Figure 1 、 Figure 2 and Figure 3 When the material is discharged after the loading operation is completed, the staff starts the lifting cylinder 18, and the lifting cylinder 18 drives the discharge door 12 upward, thereby opening the discharge port 11, and the discharge door 12 moves upward, driving the connecting rod 212 upward, and under the connection relationship between the connecting pipe 211 and the connecting rod 212, the connecting pipe 211 is driven to rotate, thereby driving the entire filter 21 to rotate, and at the same time, by quickly opening and closing the pulse valve 35, the compressed air in the air bag 23 is converted into a short-term high-efficiency pulse current, so that the compressed air in the air bag 23 is sprayed to the filter 21 at a high speed through the through hole 13 at the top of the silo 1, and because the filter 21 is in a rotating state, the high-pressure airflow will sweep the entire surface of the filter 21, avoiding incomplete cleaning in local areas due to airflow concentration or dead corners, which is beneficial to improving the cleaning efficiency of the filter 21.

[0038] Reference Figure 1 、 Figure 2 and Figure 3 The discharge port 11 of the silo 1 is circumferentially provided with a clamping ring 111. The clamping ring 111 is provided with a clamping groove 112. The clamping groove 112 is circumferentially provided on the upper end surface of the clamping ring 111. The lower end surface of the discharge door 12 is fixedly connected with a clamping block 113. The clamping block 113 is circumferentially provided. When the discharge door 12 is located at the discharge port 11 of the silo 1, the clamping block 113 is located in the clamping groove 112 of the clamping ring 111. The width of the clamping groove 112 is smaller than the size of the food particles to prevent the food particles from falling into the clamping groove 112 and affecting the opening and closing of the discharge door 12. When the food particles are in the loading stage, the discharge door 12 is in a closed state. The coordination of the clamping block 113 and the clamping groove 112 improves the sealing between the discharge door 12 and the silo 1, which is conducive to improving the loading efficiency of the device.

[0039] Reference Figure 1 、 Figure 2 and Figure 3 A rack 215 is provided on the outer circumference of the connecting shell 213, and a flat plate 38 is provided above the mounting plate 31. One end of the flat plate 38 is fixedly connected to the silo 1, and a connecting wheel 37 is provided inside the flat plate 38. The connecting wheel 37 is engaged with the rack 215. A lifting rod 371 is passed through the center of the connecting wheel 37. One end of the lifting rod 371 is fixedly connected to the upper end surface of the mounting plate 31, and the other end is threadedly connected to the connecting wheel 37. The mounting plate 31 is slidably connected to the silo 1.

[0040] Reference Figure 1 、 Figure 2 and Figure 3 When discharging is required, the staff starts the lifting cylinder 18, and the lifting cylinder 18 drives the discharging door 12 upward, thereby opening the discharge port 11, and at the same time drives the connecting shell 213 to rotate. The connecting shell 213 rotates and drives the connecting wheel 37 to rotate under the action of the rack 215. Since the mounting plate 31 is slidingly connected to the silo 1, and the lifting rod 371 is threadedly connected to the connecting wheel 37, when the connecting wheel 37 rotates, it will synchronously drive the lifting rod 371 upward, thereby driving the mounting plate 31 upward, separating the sealing rod 36 from the air inlet 34, thereby simultaneously improving the efficiency of cleaning the residual food particles on the inner wall of the feed pipe 24, and is conducive to improving the discharging efficiency.

[0041] Reference Figure 1 、 Figure 2 and Figure 3 A limiting rod 372 is provided on the side of the lifting rod 371 away from the silo 1. The limiting rod 372 is passed through the flat plate 38. One end of the limiting rod 372 is fixedly connected to the mounting plate 31, and the other end is slidably connected to the flat plate 38. By providing the limiting rod 372, the lifting direction of the mounting plate 31 is restricted, ensuring the stability of its movement process, which is conducive to improving the stability of the device.

[0042] Reference Figure 1 、 Figure 2 and Figure 3 The bottom end of the silo 1 is provided with a plurality of support legs 19, and the support legs 19 are evenly arranged. By arranging the support legs 19, a more uniform support is provided for the device, which is conducive to improving the stability of the equipment.

[0043] Reference Figure 1 、 Figure 2 and Figure 3 , a discharging door 161 is hinged on the storage box 16. When the food particles need to be taken out, the staff can open the discharging door 161 to achieve it, which is easy to operate and conducive to improving work efficiency.

[0044] The implementation principle of the vacuum feeding device for manufacturing pet food is as follows: under the driving of compressed air, the vacuum pump 22 generates high vacuum to form a vacuum air flow, food material particles are sucked into the suction port to form a mist flow, and then the mist flow reaches the material bin 1 of the feeding machine through the suction pipe, the filter 21 completely separates the food material particles from the air, and ensures subsequent feeding of the food material particles; when the feeding time reaches the set parameter, the vacuum pump 22 is closed, the feeding valve 33 is closed, a part of residual food material particles in the feeding pipe 24 naturally slide down under the action of gravity, the residual food material particles are reduced, then the feeding door 12 is opened and the mounting plate 31 is lifted, the sealing rod 36 is separated from the air inlet hole 34, the air inlet hole 34 is opened, compressed air enters from the air inlet pipe 14, is sprayed into the feeding pipe 24 at high speed through the uniformly distributed air inlet hole 34, a reverse air flow is formed, another part of residual raw materials adhered to the wall of the feeding pipe 24 is blown away and falls into the material bin 1, and the feeding efficiency of the equipment is improved.

[0045] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, so: equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A vacuum feeding device for producing pet food, comprising a feed bin (1), characterized in that: The silo (1) is provided with a filter (21), the filter (21) is located at the top of the silo (1), the bottom of the silo (1) is provided with a discharge port (11), the discharge port (11) of the silo (1) is provided with a discharge door (12), the top of the silo (1) is provided with a through hole (13), the upper end surface of the silo (1) is provided with an air bag (23), the air bag (23) is connected to the through hole (13) of the silo (1), the top of the silo (1) is provided with a vacuum pump (22), the vacuum pump (22) is connected to the silo (1), and the bottom of the silo (1) is connected with an air inlet pipe (14). and a feed pipe (24), the air intake pipe (14) is provided with an air intake valve (15), the feed pipe (24) is tilted, one end of the feed pipe (24) at a lower height is connected to the silo (1), and the other end is connected to a straight pipe (32), the straight pipe (32) is provided with a feed valve (33), the upper end surface of the feed pipe (24) is provided with a plurality of air intake holes (34), the air intake holes (34) are evenly arranged, a mounting plate (31) is provided above the air intake pipe (14), the lower end surface of the mounting plate (31) is fixedly connected with a plurality of sealing rods (36), and the sealing rods (36) are arranged in a one-to-one correspondence with the air intake holes (34).

2. The vacuum feeding device for producing pet food according to claim 1, characterized in that: The bottom end of the silo (1) is provided with a storage box (16), a connecting plate (17) is provided in the storage box (16), a lifting cylinder (18) is fixedly connected to the connecting plate (17), the lifting cylinder (18) is vertically arranged, the top end of the piston rod of the lifting cylinder (18) is fixedly connected to the lower end surface of the discharge door (12), the silo (1) is a cylindrical cavity, a connecting pipe (211) is provided at the center of the filter (21), a connecting rod (212) is provided between the filter (21) and the discharge door (12), one end of the connecting rod (212) is connected to the lower end surface of the discharge door (12), and the bottom end of the connecting rod (212) is connected to the bottom end surface of the discharge door (12). The upper end face is fixedly connected, and the other end is threadedly connected to the connecting pipe (211). A connecting shell (213) is provided on the outer circumference of the filter (21), and a connecting ring (214) is provided on the outer circumference of the connecting shell (213). A sliding groove is provided on the inner wall of the silo (1). The connecting shell (213) is rotatably connected to the silo (1), and the connecting ring (214) is located at the sliding groove of the silo (1). The length of the through hole (13) of the silo (1) is consistent with the radius of the filter (21). A pulse valve (35) for back-blowing the filter (21) is provided on the air bag (23).

3. The vacuum feeding device for producing pet food according to claim 2, characterized in that: The discharge port (11) of the silo (1) is circumferentially provided with a clamping ring (111), the clamping ring (111) is provided with a clamping groove (112), the clamping groove (112) is circumferentially provided on the upper end surface of the clamping ring (111), the lower end surface of the discharge door (12) is fixedly connected with a clamping block (113), the clamping block (113) is circumferentially provided, and when the discharge door (12) is located at the discharge port (11) of the silo (1), the clamping block (113) is located at the clamping groove (112) of the clamping ring (111).

4. The vacuum feeding device for producing pet food according to claim 2, characterized in that: A rack (215) is provided on the outer circumference of the connecting shell (213), and a flat plate (38) is provided above the mounting plate (31). One end of the flat plate (38) is fixedly connected to the silo (1). A connecting wheel (37) is provided inside the flat plate (38), and the connecting wheel (37) is engaged with the rack (215). A lifting rod (371) is passed through the center of the connecting wheel (37). One end of the lifting rod (371) is fixedly connected to the upper end surface of the mounting plate (31), and the other end is threadedly connected to the connecting wheel (37). The mounting plate (31) is slidably connected to the silo (1).

5. The vacuum feeding device for producing pet food according to claim 4, characterized in that: A limiting rod (372) is provided on the side of the lifting rod (371) away from the silo (1). The limiting rod (372) is passed through the flat plate (38). One end of the limiting rod (372) is fixedly connected to the mounting plate (31), and the other end is slidably connected to the flat plate (38).

6. The vacuum feeding device for producing pet food according to claim 1, characterized in that: The bottom end of the silo (1) is provided with a plurality of support legs (19), and the support legs (19) are evenly arranged.

7. The vacuum feeding device for producing pet food according to claim 2, characterized in that: A discharge door (161) is hingedly connected to the storage box (16).

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