A freeze-dried pet food sieving device

Abstract

The present invention provides a sieving device for freeze-dried pet food, which comprises a base. Vertically arranged support plates are fixedly connected to both the front and rear sides of the base. A sieving cylinder is fixedly connected between the two support plates. An inlet and an outlet are respectively arranged at the top and bottom of the sieving cylinder along its length direction. A plurality of sieve holes are evenly distributed on the side wall of the sieving cylinder. A plurality of bristles are evenly distributed on both inner side walls of the sieving cylinder. A blowing net cylinder is rotatably connected at the center of the sieving cylinder. A plurality of push plates are fixedly connected to the circumferential side wall of the blowing net cylinder. Opening and closing mechanisms are installed in both the inlet and the outlet. A material blocking cover covering the periphery of the sieving cylinder is also fixedly connected between the two support plates. A discharge port is arranged at the bottom of the material blocking cover. This device can sweep off the debris on the surface of the freeze-dried product in the form of blowing, then sieve it, collect the debris for grinding, and after grinding it into powder, it is beneficial for reuse.

Description

Technical Field

[0001] The present invention relates to the technical field of pet food processing, and in particular to a sieving device for freeze-dried pet food. Background Art

[0002] Freeze-drying is short for vacuum freeze-drying. Its principle is to rapidly freeze the material containing moisture (fresh meat) in a low-temperature vacuum environment (a vacuum environment of minus 40 degrees Celsius), so that the ice directly sublimates into water vapor and the moisture in the food material is drained to make the material dry.

[0003] Currently, when producing pet freeze-dried food, it is necessary to first cut the fresh meat into small pieces, then perform freeze-drying, and directly bag it after freeze-drying. However, due to the rough cut of the material before freeze-drying and the dropping of debris during the transportation process after freeze-drying, there will be more residue at the bottom of the bag after bagging, which affects the product quality and is also wasteful. Summary of the Invention

[0004] In view of the above problems, the present invention provides a sieving device for freeze-dried pet food. This device can sweep the debris on the surface of the freeze-dried product by blowing, then sieve it, and collect the debris for grinding. After grinding into powder, it is conducive to reuse.

[0005] To solve the above problems, the technical solution adopted by the present invention is:

[0006] A sieving device for freeze-dried pet food includes a base. Vertically arranged support plates are fixedly connected to both the front and rear sides of the base. A sieving cylinder is fixedly connected between the two support plates. The top and bottom of the sieving cylinder are respectively provided with a feed inlet and a discharge outlet arranged along its length direction. A plurality of sieve holes are evenly distributed on the side wall of the sieving cylinder. Multiple bristles are evenly distributed on both inner walls of the sieving cylinder. A blowing net cylinder is rotatably connected to the center of the sieving cylinder. A plurality of push plates are fixedly connected to the circumferential side wall of the blowing net cylinder. Opening and closing mechanisms are installed in both the feed inlet and the discharge outlet. A material blocking cover covering the periphery of the sieving cylinder is also fixedly connected between the two support plates. A discharge port is provided at the bottom of the material blocking cover, and a grinding mechanism is installed at the bottom of the discharge port.

[0007] Preferably, the top of the feed inlet is butted with a feeding hopper, and the feeding hopper penetrates through the material blocking cover.

[0008] Preferably, the opening and closing mechanism includes arc-shaped grooves provided on the inner walls of the feed inlet and the discharge outlet. Arc-shaped baffles are elastically connected in the arc-shaped grooves through first springs. The ends of the arc-shaped baffles extend into the corresponding feed inlet and discharge outlet. An electromagnet is fixedly installed at the extended end of the arc-shaped baffle. An iron block cooperating with the electromagnet is fixedly installed at the end of the push plate. A controller electrically connected to the electromagnet is installed on the support plate.

[0009] Preferably, a first motor is installed on the front side of the support plate, and the front end of the air blowing cylinder penetrates through the corresponding support plate and is in transmission connection with the output end of the first motor through a pair of first gears.

[0010] Preferably, a blowing pipe extending into the air blowing cylinder is fixedly connected to the rear support plate. A plurality of air blowing holes are provided on the side wall of the blowing pipe, and a blower docked with the blowing pipe is installed on the rear support plate.

[0011] Preferably, the bottom of the discharge port is docked with a discharge channel, the bottom of the discharge channel is docked with a discharge hopper, the bottom of the discharge hopper is rotatably connected to a discharge cylinder, and the lower end of the discharge cylinder penetrates through the base.

[0012] Preferably, the grinding mechanism includes a material guiding cover docked with the discharge port. The bottom of the material guiding cover is fixedly docked with a circular pressing cover, the bottom of the circular pressing cover is fixedly docked with an upper grinding plate, a lower grinding plate cooperating with the upper grinding plate is fixedly connected to the side wall of the discharge cylinder, both the upper grinding plate and the lower grinding plate are inclined downward, and a driving mechanism capable of driving the discharge cylinder to rotate is installed on the base.

[0013] Preferably, the driving mechanism includes a second motor installed at the bottom of the base. The output end of the second motor penetrates through the base and is in transmission connection with the discharge cylinder through a pair of second gears.

[0014] Preferably, an annular air cushion is installed on the side wall of the discharge cylinder located inside the circular pressing cover. A gas inlet pipe communicated with the annular air cushion is fixed at the center of the discharge cylinder, and a gas pumping assembly capable of pumping gas into the gas inlet pipe is installed on the base.

[0015] Preferably, the gas pumping assembly includes an installation cavity and a gas cavity provided in the base. The output shaft of the second motor penetrates through the installation cavity and is fixedly connected to a cam. A push rod extending into the installation cavity is provided in the gas cavity. The extended end of the push rod is rotatably connected to a roller abutted against the side wall of the cam. A piston is fixed at one end of the push rod located in the gas cavity. The piston is elastically connected to the inner wall of the gas cavity through a second spring. The bottom of the gas cavity is connected with an air outlet pipe, and the air outlet pipe is docked with the lower end of the gas inlet pipe through a rotary joint.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. By installing a sieve cylinder, bristles, a blowing air net cylinder, and multiple push plates, freeze-dried food falls into the sieve cylinder through the feeding hopper and the feeding port. Multiple push plates can separate and place multiple portions of freeze-dried food, achieving quantitative screening and ensuring the screening effect. The blower supplies air into the blowing pipe, and strong wind blows into the blowing air net cylinder through multiple blowing holes and then blows outwards through multiple mesh holes into the sieve cylinder, blowing the lighter freeze-dried food inside towards the inner wall of the sieve cylinder and making it contact with the bristles, effectively blowing off the debris on the surface of the freeze-dried food and discharging it through the sieve holes.

[0018] 2. By installing opening and closing mechanisms at the feeding port and the discharging port, during loading and unloading, only the electromagnets on the arc-shaped baffles at the corresponding positions need to be turned on through the controller. When the iron blocks at the ends of the push plates pass by the electromagnets, they are magnetically attracted, and then the arc-shaped baffles can be automatically opened to realize the loading or discharging process.

[0019] 3. By installing a material blocking cover and a grinding mechanism, the blown-out debris is collected through the material blocking cover, enters the circular pressing material cover through the discharging port and the guiding cover, and then the second motor is started. The discharging cylinder is driven to rotate by a pair of second gears, and the lower grinding plate is synchronously driven to rotate. The debris is sent between the upper grinding plate and the lower grinding plate through the circular pressing material cover to complete the grinding process and grind it into powder for subsequent reuse.

[0020] 4. By setting a pump air component and an annular air cushion, the second motor can synchronously drive the cam to rotate. The piston is driven to move left and right reciprocally by the abutting push rod, and then air is reciprocally pumped into and extracted from the annular air cushion through the air outlet pipe and the air inlet pipe. When the annular air cushion is inflated, it can squeeze the debris in the circular pressing material cover and improve the grinding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of the present invention;

[0022] Figure 2 is a front view of the present invention;

[0023] Figure 3 is a schematic structural diagram of the opening and closing mechanism proposed by the present invention;

[0024] Figure 4 is a schematic diagram of the butt joint of the discharging cylinder, the discharging hopper, and the discharging channel proposed by the present invention;

[0025] Figure 5 is Figure 1 an enlarged schematic diagram of the structure at A in

[0026] In the figure: 1 material baffle, 2 feeding hopper, 3 screening cylinder, 4 feeding port, 5 discharging port, 6 push plate, 7 iron block, 8 air blowing net cylinder, 9 air blowing pipe, 10 discharging channel, 11 discharging opening, 12 discharging hopper, 13 material guiding cover, 14 annular air cushion, 15 circular pressing material cover, 16 upper grinding plate, 17 lower grinding plate, 18 discharging cylinder, 19 air inlet pipe, 20 air outlet pipe, 21 second motor, 22 base, 23 first gear, 24 controller, 25 support plate, 26 first spring, 27 electromagnet, 28 arc-shaped groove, 29 second gear, 30 cam, 31 installation cavity, 32 resisting rod, 33 piston, 34 air cavity, 35 second spring, 36 brush hair. Detailed implementation manners

[0027] To make the above objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific implementation manners of the present invention will be made with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific implementations disclosed below.

[0028] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation manner.

[0029] Refer to Figures 1-5 , a screening device for freeze-dried pet food, including a base 22. Vertical support plates 25 are fixedly connected to the front and rear sides of the base 11. A screening cylinder 3 is fixedly connected between the two support plates 25. A feeding port 4 and a discharging port 5 arranged along its length direction are respectively provided at the top and bottom of the screening cylinder 3. A plurality of screening holes are evenly distributed on the side wall of the screening cylinder 3. A plurality of brush hairs 36 are evenly distributed on the inner walls of both sides of the screening cylinder 3. An air blowing net cylinder 8 is rotatably connected at the center of the screening cylinder 3. A plurality of push plates 6 are fixedly connected to the circumferential side wall of the air blowing net cylinder 8. Opening and closing mechanisms are installed in both the feeding port 4 and the discharging port 5. A material baffle 1 covering the periphery of the screening cylinder 3 is also fixedly connected between the two support plates 25. A discharging opening 11 is provided at the bottom of the material baffle 1. A grinding mechanism is installed at the bottom of the discharging opening.

[0030] Further, the top of the feeding port 4 is butted with a feeding hopper 2. The feeding hopper 2 penetrates through the material baffle 1, and small pieces of freeze-dried food are put into the feeding hopper 2, and the blown-out scraps are collected through the material baffle 1.

[0031] Specifically, the opening and closing mechanism includes an arc groove 28 arranged on the inner wall of the feed port 4 and the discharge port 5, and an arc baffle 25 is elastically connected to the arc groove 28 through a first spring 26. The end of the arc baffle 25 extends to the corresponding feed port 4 and the discharge port 5. An electromagnet 27 is fixedly installed on the extended end of the arc baffle 25, and an iron block 7 cooperating with the electromagnet 27 is fixedly installed on the end of the push plate 6. A controller 24 electrically connected to the electromagnet 27 is installed on the support plate 25. When loading and unloading, it is only necessary to turn on the electromagnet 27 on the arc baffle 25 at the corresponding position through the controller 24. The iron block 7 at the end of the push plate 6 is magnetically attracted when passing through the electromagnet 27, and then the arc baffle 25 can be automatically opened to realize the loading or unloading process.

[0032] Furthermore, a first motor is installed on the front support plate 25, and the front end of the air blowing mesh cylinder 8 passes through the corresponding support plate 25 and is connected to the output end of the first motor through a pair of first gears 23. When the first motor is started, the air blowing mesh cylinder 8 is driven to rotate through the pair of first gears 23, and then the multiple push plates 6 are driven to rotate, thereby performing a multi-round screening process.

[0033] Furthermore, a blowing pipe 9 extending into the blowing mesh tube 8 is fixedly connected to the rear support plate 25, and a plurality of blowing holes are provided on the side wall of the blowing pipe 9. A blower connected to the blowing pipe 9 is installed on the rear support plate 25. The blower is started to blow air into the blowing pipe 9, and strong wind is blown into the blowing mesh tube 8 through the plurality of blowing holes, and blows outwardly into the sub-screen tube 3 through the plurality of mesh holes, so that the lighter freeze-dried food inside is blown toward the inner wall of the sub-screen tube 3 and contacts the bristles 36. With the rotation of the push plate 6, the debris on the surface of the freeze-dried food can be blown away.

[0034] Furthermore, the bottom of the discharge port 5 is connected to a discharge channel 10, the bottom of the discharge channel 10 is connected to a discharge hopper 12, the bottom of the discharge hopper 12 is rotatably connected to a discharge barrel 18, the lower end of the discharge barrel 18 passes through the base 22, and the freeze-dried product is discharged through the discharge channel 10, the discharge hopper 12 and the discharge barrel 18.

[0035] Specifically, the grinding mechanism includes a material guide cover 13 docked with the discharge port 11, the bottom of the material guide cover 13 is fixedly docked with a circular material pressure cover 15, the bottom of the circular material pressure cover 15 is fixedly docked with an upper grinding plate 16, the side wall of the discharge barrel 18 is fixedly connected with a lower grinding plate 17 that cooperates with the upper grinding plate 16, the upper grinding plate 16 and the lower grinding plate 17 are both arranged to be inclined downward, and a driving mechanism that can drive the discharge barrel 18 to rotate is installed on the base 22.

[0036] Specifically, the driving mechanism includes a second motor 21 installed at the bottom of the base 22. The output end of the second motor 21 passes through the base 22 and is connected to the discharge barrel 18 through a pair of second gears 29. When the second motor 21 is started, the discharge barrel 18 is driven to rotate through the pair of second gears 29, and the lower grinding plate 17 is driven to rotate synchronously. The crushed slag is sent to the space between the upper grinding plate 16 and the lower grinding plate 17 through the circular pressure cover 15 to complete the grinding process and grind it into powder.

[0037] Furthermore, an annular air cushion 14 is installed on the side wall of the discharge barrel 18 located in the circular pressure cover 15, and an air inlet pipe 19 connected to the annular air cushion 14 is fixed at the center of the discharge barrel 18. A pumping assembly that can pump air into the air inlet pipe 19 is installed on the base 22. The second motor 21 can synchronously drive the cam 30 to rotate. Due to the action of the second spring 35, the roller always contacts the cam 30 through the push rod 32, and then the piston 33 is driven to move back and forth left and right through the push rod 32. The piston 33 moves to the left to pump air and moves to the right to exhaust air. Then, the annular air cushion 14 is pumped and exhausted back and forth through the outlet pipe 20 and the air inlet pipe 19. The inflation of the annular air cushion 14 can squeeze the slag in the circular pressure cover 15.

[0038] Specifically, the air pump assembly includes an installation cavity 31 and an air cavity 34 arranged in the base 22. The output shaft of the second motor 21 passes through the installation cavity 31 and is fixedly connected to the cam 30. A push rod 32 extending into the installation cavity 31 is provided in the air cavity 34. The extended end of the push rod 32 is rotatably connected to a roller that abuts against the side wall of the cam 30. A piston 33 is fixed on one end of the push rod 32 located in the air cavity 34. The piston 33 is elastically connected to the inner wall of the air cavity 34 by a second spring 35. The bottom of the air cavity 34 is connected to the air outlet pipe 20, and the air outlet pipe 20 is connected to the lower end of the air inlet pipe 19 through a rotating joint.

[0039] Small pieces of freeze-dried food are put into the upper hopper 2, and the first motor is started. The blowing net tube 8 is driven to rotate through a pair of first gears 23, and then the multiple push plates 6 are driven to rotate. The electromagnet 27 in the feed port 4 is opened through the controller 24. Under the action of the magnetic attraction of the electromagnet 27 and the iron block 7, the push plate 6 pulls the arc baffle 25 to open the feed port 4, and the freeze-dried food in the upper hopper 2 falls between the multiple push plates 6 in batches. The feed port 4 is closed, and the blower is started to blow air into the blowing pipe 9. Strong wind blows into the blow pipe 9 through the multiple blowing holes. The air is blown outwards through a plurality of mesh holes in the air blowing mesh cylinder 8 toward the sieve cylinder 3, so that the lighter freeze-dried products inside are blown toward the inner wall of the sieve cylinder 3 and come into contact with the bristles 36. By coordinating the rotation of the push plate 6, the debris on the surface of the freeze-dried products can be blown away and discharged into the material blocking cover 1 through the sieve holes with the air flow. After rotating for several turns to complete the sieving, it is only necessary to open the electromagnet 27 in the discharge port 5, and pull the arc baffle 25 under the action of the magnetic attraction to open the discharge port 5, and the freeze-dried products are discharged through the discharge channel 10, the discharge hopper 12 and the discharge cylinder 18.

[0040] The blown-out crushed slag is collected through the material baffle cover 1, enters the circular pressing material cover 15 through the discharge port 11 and the material guiding cover 13. Subsequently, the second motor 21 is started, the discharge cylinder 18 is driven to rotate by a pair of second gears 29, and the lower grinding plate 17 is synchronously driven to rotate. The crushed slag is sent between the upper grinding plate 16 and the lower grinding plate 17 through the circular pressing material cover 15 to complete the grinding process, and it is ground into powder for subsequent reuse.

[0041] The second motor 21 can synchronously drive the cam 30 to rotate. Since the abutting rod 32 is under the action of the second spring 35, the roller always abuts against the cam 30. Then, the piston 33 is driven by the abutting rod 32 to reciprocate left and right. When the piston 33 moves left, the air pumping process is carried out, and when the piston 33 moves right, the air extraction process is carried out. Then, the air is reciprocally pumped and extracted into the annular air cushion 14 through the air outlet pipe 20 and the air inlet pipe 19. When the annular air cushion 14 is inflated, it can extrude the crushed slag in the circular pressing material cover 15, accelerating the grinding efficiency.

[0042] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A freeze-dried pet food screening device, comprising a base (22), characterized in that, The front and rear sides of the base (22) are both fixedly connected with vertically arranged support plates (25), a sub-screen drum (3) is fixedly connected between the two support plates (25), the top and bottom of the sub-screen drum (3) are respectively provided with a feed port (4) and a discharge port (5) arranged along the length direction thereof, the side walls of the sub-screen drum (3) are evenly provided with a plurality of sieve holes, the inner walls on both sides of the sub-screen drum (3) are evenly provided with a plurality of bristles (36), a blowing mesh drum (8) is rotatably connected at the center of the sub-screen drum (3), a plurality of push plates (6) are fixedly connected to the circumferential side walls of the blowing mesh drum (8), an opening and closing mechanism is installed in the feed port (4) and the discharge port (5), a material blocking cover (1) arranged on the periphery of the sub-screen drum (3) is also fixedly connected between the two support plates (25), a discharge port (11) is provided at the bottom of the material blocking cover (1), and a grinding mechanism is installed at the bottom of the discharge port; The bottom of the discharge port (5) is butt-jointed with a discharge channel (10), the bottom of the discharge channel (10) is butt-jointed with a discharge hopper (12), the bottom of the discharge hopper (12) is rotatably connected with a discharge cylinder (18), and the lower end of the discharge cylinder (18) passes through the base (22); The grinding mechanism comprises a material guide cover (13) docked with a material discharge port (11); a circular material pressure cover (15) is fixedly docked at the bottom of the material guide cover (13); an upper grinding plate (16) is fixedly docked at the bottom of the circular material pressure cover (15); a lower grinding plate (17) matched with the upper grinding plate (16) is fixedly connected to the side wall of the material discharge barrel (18); the upper grinding plate (16) and the lower grinding plate (17) are both arranged to be tilted downward; and a driving mechanism capable of driving the material discharge barrel (18) to rotate is installed on the base (22); The driving mechanism comprises a second motor (21) mounted at the bottom of the base (22); an output end of the second motor (21) passes through the base (22) and is transmission-connected to the discharge barrel (18) via a pair of second gears (29); An annular air cushion (14) is installed on the side wall of the discharge barrel (18) located inside the circular pressure cover (15); an air inlet pipe (19) connected to the annular air cushion (14) is fixed at the center of the discharge barrel (18); and an air pumping assembly capable of pumping air into the air inlet pipe (19) is installed on the base (22); The pump air assembly comprises a mounting cavity (31) and an air cavity (34) arranged in a base (22); an output shaft of the second motor (21) passes through the mounting cavity (31) and is fixedly connected to a cam (30); a push rod (32) extending into the mounting cavity (31) is arranged in the air cavity (34); an extended end of the push rod (32) is rotatably connected to a roller that contacts a side wall of the cam (30); a piston (33) is fixed to one end of the push rod (32) located in the air cavity (34); the piston (33) is elastically connected to an inner wall of the air cavity (34) via a second spring (35); an air outlet pipe (20) is connected to the bottom of the air cavity (34); and the air outlet pipe (20) is butt-jointed to a lower end of an air inlet pipe (19) via a rotary joint.

2. The sieving device for freeze-dried pet food according to claim 1, characterized in that, The top of the feed inlet (4) is butted with a feeding hopper (2), and the feeding hopper (2) penetrates through the material blocking cover (1).

3. The sieving device for freeze-dried pet food according to claim 1, wherein The opening and closing mechanism includes arc-shaped grooves (28) provided on the inner walls of the feed inlet (4) and the discharge outlet (5). An arc-shaped baffle is elastically connected in the arc-shaped groove (28) through a first spring (26). The end of the arc-shaped baffle extends into the corresponding feed inlet (4) and discharge outlet (5). An electromagnet (27) is fixedly installed at the extended end of the arc-shaped baffle. An iron block (7) cooperating with the electromagnet (27) is fixedly installed at the end of the push plate (6). A controller (24) electrically connected to the electromagnet (27) is installed on the support plate (25).

4. A sieving device for freeze-dried pet food according to claim 1, characterized in that, A first motor is installed on the front-side support plate (25). The front end of the air blowing net cylinder (8) penetrates through the corresponding support plate (25) and is in transmission connection with the output end of the first motor through a pair of first gears (23).

5. The sieving device for freeze-dried pet food according to claim 1, characterized in that, A blow pipe (9) extending into the air blowing net cylinder (8) is fixedly connected to the rear-side support plate (25). A plurality of air blowing holes are provided on the side wall of the blow pipe (9). A blower docked with the blow pipe (9) is installed on the rear-side support plate (25).

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