An integrated preparation device for tofu cat litter

Abstract

The present invention discloses an integrated tofu cat litter preparation device, comprising a material rack, a continuous stirring mechanism, a granulation bin, a first elevator, a microwave drying box, a second elevator, an air drying and cooling box, a throwing and feeding mechanism, and a flexible connecting pipe. A first transfer bin is provided on the top of the material rack, and a first auger conveyor is fixedly installed at the bottom of the first transfer bin. In this integrated tofu cat litter preparation, drying, cooling, and screening device, the crushed material in the tofu cat litter is screened through a sieve plate and collected from a crushed material recovery inclined plate. Simultaneously, during the process of throwing the tofu cat litter, an air supply mechanism blows the tofu cat litter so that the tofu is distributed on the sieve plate according to its own weight. The sieve plate is divided by a mesh, so that the tofu cat litter on the sieve plate is sorted into short-grain tofu cat litter and long-grain tofu cat litter. Through the above steps, the drying airflow and the cooling airflow are used for air separation during the drying and cooling processes, which reduces the processing flow and further improves the utilization efficiency of each device.

Description

Technical Field

[0001] The invention relates to the technical field of tofu cat litter, in particular to integrated tofu cat litter preparation equipment. Background Art

[0002] Cat litter is a pet product used by cats to cover their feces and urine. Tofu cat litter, as a type of organic cat litter, has the advantages of being pollution-free and safe from accidental ingestion. In order to mass-produce tofu cat litter, integrated preparation equipment is required.

[0003] In the preparation process of existing tofu cat litter, a large amount of raw materials are directly put into the mixer for stirring. This stirring method has high requirements on the stirring power. At the same time, large clumps of raw materials are also easy to mix evenly. The waiting process for stirring is not convenient for continuous production. In addition, the existing tofu cat litter usually relies on a vertically arranged ring die and a horizontally arranged pressure wheel to granulate. This granulation method is limited by the influence of gravity. The raw materials fall, resulting in only a small number of pressure wheels installed inside the ring die for extrusion granulation. In the actual production process, drying, cooling and screening are all achieved by independent equipment, and there is no linkage between the various processing equipment. This leads to a long production process and low utilization efficiency of some equipment. In view of the above problems, it is necessary to improve the existing equipment. Summary of the Invention

[0004] The object of the present invention is to provide an integrated preparation device for tofu cat litter, so as to solve the problem proposed in the above background technology that in the preparation process of the existing tofu cat litter, a large amount of raw materials are directly put into the mixer for stirring. This stirring method has high requirements on the stirring power of the stirring. At the same time, large clumps of raw materials are also easy to mix evenly. The waiting process of stirring is not convenient for continuous production. In addition, the existing tofu cat litter usually relies on a vertically arranged ring die and a horizontally arranged pressure wheel to cooperate for granulation. This granulation method is limited by the influence of gravity. The raw materials fall, resulting in only a small number of pressure wheels being installed inside the ring die for extrusion granulation. In the actual production process, drying, cooling and screening are all achieved by independent equipment, and there is no linkage between the various processing equipment, which leads to a long production process and low utilization efficiency of some equipment.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an integrated tofu cat litter preparation device, comprising a material rack, a continuous stirring mechanism, a granulation bin, a first elevator, a microwave drying box, a second elevator, an air drying and cooling box, a throwing and feeding mechanism and a flexible connecting pipe, wherein a first transfer bin is provided on the top of the material rack, and a first auger conveyor is fixedly installed on the bottom of the first transfer bin, and the right end of the first auger conveyor is connected to the fixed cover, a frame is provided below the fixed cover, and the frame and the fixed cover are fixedly connected by a fixed rod, a continuous stirring mechanism is rotatably connected between the fixed cover and the frame, and the continuous stirring mechanism is provided on the inner side of the fixed rod, a material bin is provided inside the frame, and the lowermost end of the material bin is connected to the second auger conveyor, and the other end of the second auger conveyor is connected to the second transfer bin;

[0006] The second transfer bin is fixed on the top of the box body, and a granulation bin is provided inside the box body, and the bottom of the second transfer bin is communicated with the granulation bin, the inside of the granulation bin is rotatably connected to a ring die, and a pressure wheel is provided on the inside of the ring die, and the upper and lower ends of the pressure wheel are rotatably connected to the upper and lower sides of the inner wall of the box body, the center of the granulation bin is rotatably connected to a conical guide wheel, and the lower end of the conical guide wheel passes through the box body and is rotatably connected thereto, a third motor is fixedly installed on the bottom of the box body, and the third motor is connected to the conical guide wheel, a planetary gear set is provided at the bottom of all the pressure wheels, and the pressure wheel is connected to the third motor through the planetary gear set, a discharge port is provided on the outside of the box body, and a discharge plate is fixed on the outside of the box body, and the discharge plate is located at the lower side of the discharge port, a scraper is fixed inside the discharge port, and the scraper is arranged in contact with the outer side of the ring die;

[0007] The lower end of the first elevator is connected to the discharge plate, and the upper end of the first discharge elevator is connected to the upper end of the microwave drying box, the lower end of the microwave drying box is connected to the lower end of the second elevator, and the upper end of the second elevator is connected to the upper end of the air drying cooling box, the interior of the microwave drying box and the air drying cooling box are staggered with throwing and feeding mechanisms, and a microwave dryer is fixed inside the microwave drying box, and the microwave dryer is located above the throwing and feeding mechanism inside the microwave drying box, and an air supply mechanism is fixed on the throwing and feeding mechanism

[0008] Preferably, a pressure sensor is provided between the first transfer bin and the material rack, and a flexible connecting pipe is provided between the first auger conveyor and the feed opening;

[0009] By adopting the above technical solution, the flexible connecting pipe eliminates the rigid connection between the first transfer bin and the feed opening, making it easier for the pressure sensor to monitor the weight change of the first transfer bin in real time.

[0010] Preferably, a feed opening is provided on the surface of the fixed cover, and the flexible connecting pipe is connected to the correspondingly arranged mixing bin through the feed opening. An outlet opening is provided on the surface of the frame, and the material bin is connected to the correspondingly arranged mixing bin through the outlet opening;

[0011] By adopting the above technical solution, the raw materials enter the correspondingly arranged mixing bin through the feed opening, and the raw materials that are evenly mixed in the mixing bin corresponding to the outlet opening enter the material bin through the outlet opening.

[0012] Preferably, the continuous stirring mechanism includes a rotating drum, a first motor, a mixing bin, a bracket, a stirring shaft, stirring blades, a second motor, and a bevel gear set. The upper and lower ends of the rotating drum are respectively rotationally connected to the fixed cover and the frame, and the top of the rotating drum penetrates the fixed cover and is connected to the first motor fixedly installed on the fixed cover. Three mixing bins are arranged in a "pin" shape inside the rotating drum, and two brackets are fixed inside the mixing bin. Stirring blades are welded on the outer side of the stirring shaft, and the upper and lower ends of the stirring shaft are respectively rotationally connected to the two brackets. The second motor corresponding to the mixing bin is fixedly installed on the outer side of the rotating drum, and the second motor is connected to the upper end of the stirring shaft through the bevel gear set;

[0013] By adopting the above technical solution, the second motor drives the stirring shaft to rotate through the bevel gear set, and the bracket supports the stirring shaft to fix the position of the stirring shaft. Subsequently, the stirring shaft drives the stirring blades to rotate, and the stirring blades stir the raw materials in the mixing bin.

[0014] Preferably, a worm drive is fixed on the outer side of the box body, and the worm drive penetrates the box body and is connected to the ring die;

[0015] By adopting the above technical solution, the worm drive drives the ring die to rotate inside the granulation bin.

[0016] Preferably, the throwing and conveying mechanism includes a fixed frame, a movable frame, a compression spring, a broken material recovery inclined plate, a sieve plate, a partition net, and an intermittent traction mechanism. The fixed frame is inclined and arranged inside the microwave drying box or the air drying and cooling box, and a movable frame is arranged in parallel above the fixed frame. The movable frame is connected to the fixed frame through a compression spring. A broken material recovery inclined plate is fixedly installed on the fixed frame, a sieve plate is fixedly installed on the movable frame, and a sieve mesh is fixed in the middle of the sieve plate. The bottom of the movable frame is connected to the top of the fixed frame through an intermittent traction mechanism;

[0017] By adopting the above technical solution, the intermittent traction mechanism pulls the movable frame close to the fixed frame and compresses the compression spring. The intermittent traction mechanism releases the movable frame, and the compression spring pushes the movable frame to quickly move away from the fixed frame. During the above process, the tofu cat litter is thrown up and moves along the sieve plate, and at the same time, it is convenient for the sieve plate to screen the tofu cat litter, so that the broken materials pass through the sieve plate and fall onto the broken material recovery inclined plate.

[0018] Preferably, the intermittent traction mechanism includes a connecting cable, a winding drum, a main shaft, a fourth motor, a sector gear, and a driven gear. The main shaft is rotatably mounted on the top of the fixed frame, and a plurality of winding drums are evenly fixed on the outside of the main shaft. The winding drum is fixedly connected to one end of the connecting cable, and the other end of the connecting cable is fixedly connected to the bottom of the movable frame. The fourth motor is fixedly mounted on one side of the fixed frame, and the fourth motor is provided with a sector gear. The driven gear is fixed on one side of the main shaft, and the driven gear is meshed with the sector gear.

[0019] By adopting the above technical solution, the fourth motor drives the main shaft to rotate intermittently through the cooperation of the sector gear and the driven gear. When the main shaft rotates, the connecting cable is wound through the winding disk. After the sector gear is separated from the driven gear, the compression spring pushes the main shaft to rotate in the opposite direction and releases the connecting cable, so that the winding disk winds up the connecting cable and the winding disk releases the connecting cable in a cyclic operation.

[0020] Preferably, the air supply mechanism includes a bottom air inlet duct, a bottom air inlet, a side air inlet duct, a side air inlet, a side air outlet duct, a side air outlet duct, a filter screen; a bottom air inlet is provided at the bottom of the fixing frame, and the bottom air inlet is connected to the bottom air inlet duct; a side air inlet is provided on one side of the fixing frame, and the side air inlet is connected to the side air inlet duct; a side air outlet is provided on the other side of the fixing frame, and the side air outlet is connected to the side air outlet duct; filters are fixedly installed inside the bottom air inlet, side air inlet and side air outlet; the side air inlet duct and the bottom air inlet duct in the microwave drying box are connected to the hot air blower, and the side air inlet duct and the bottom air inlet duct in the air drying and cooling box are connected to the cold air blower;

[0021] By adopting the above technical solution, the cold air blown out by the air cooler or the hot air blown out by the hot air blower can enter the sieve plate through the side air inlet and the bottom air inlet. The airflow blows up the tofu cat litter on the sieve plate and changes the position of the tofu cat litter, so that the tofu cat litter is distributed on the sieve plate according to its own weight, and then the excess airflow is discharged through the side air outlet.

[0022] A method for preparing tofu cat litter comprises the following steps:

[0023] (1) Accurate proportions of various ingredients

[0024] a. External conveying equipment sequentially transports raw materials to the first transfer bin. Flexible connecting pipes eliminate the rigid connection between the first transfer bin and other fixed components. Pressure sensors monitor the weight changes of the first transfer bin in real time, recording and controlling the input of different raw materials in sequence.

[0025] b. The first auger feeder runs in the reverse direction, blocking the connection between the first transfer bin and the continuous stirring mechanism;

[0026] (2) Mixing of raw materials

[0027] a. The first motor drives the drum to rotate, and the drum rotates between the fixed cover and the frame, so that the positions of different mixing chambers are interchanged, and the raw materials in the mixing chambers are moved synchronously;

[0028] b. The second motor drives the stirring shaft to rotate through the bevel gear set, and the stirring blades fixed on the stirring shaft rotate accordingly to stir the raw materials in the stirring chamber;

[0029] (3) Extrusion granulation

[0030] a. The second auger conveyor pushes the raw materials into the granulation bin, and the third motor drives the conical guide wheel to rotate. The conical guide wheel pushes the raw materials close to the inner wall of the ring die under the action of centrifugal force;

[0031] b. The third motor drives the pressing wheel to rotate through the planetary gear set, and the worm drive drives the ring die to rotate. The pressing wheel and the ring die cooperate to squeeze the raw materials into the ring die and complete the granulation;

[0032] c. When the ring die rotates, it moves relative to the scraper on its outside. The scraper scrapes off the raw materials extruded from the ring die and forms finished products. The finished products fall into the discharge plate and slide along the inclined discharge plate into the first elevator.

[0033] (4) Drying and screening

[0034] a. The fourth motor drives the main shaft to rotate intermittently through the cooperation of the sector gear and the driven gear. The main shaft reels the connecting cable and pulls the movable frame toward the fixed frame to retract and compress the spring to push the movable frame away from the fixed frame quickly in a cyclic operation, pushing the finished product to move progressively on the inclined screen plate;

[0035] b. The microwave dryer emits microwaves and heats the finished product on the sieve plate. At the same time, the hot air blower delivers dry hot air through the bottom air inlet and the side air inlet, and the hot air blows away the hot and humid air and is discharged through the side air outlet.

[0036] c. When the screen plate pushes the finished products and throws them up, the bottom air inlet and the side air inlet blow air to form an air flow, which pushes the finished products. The short-grain finished products are lighter in weight and are blown further away from the side air inlet. The screen separates the short-grain finished products from the long-grain finished products. During the throwing process, the unqualified finished products pass through the screen plate and fall into the debris recovery inclined plate;

[0037] (5) Cooling screening

[0038] a. The fourth motor intermittently drives the main shaft to rotate through the cooperation of the sector gear and the driven gear. The main shaft (2573) reels the connecting cable and pulls the movable frame to retract toward the fixed frame until the sector gear and the driven gear are disengaged. At this time, the compression spring pushes the movable frame to quickly move away from the fixed frame. The above two motion states are alternately cyclically operated to push the finished product to move progressively on the inclined screen plate. b. The bottom air inlet and the side air inlet of the air cooler deliver dry cold air, and the cold air blows away the heat of the finished product and is discharged through the side air outlet.

[0039] c. When the screen plate pushes the finished product and throws it up, the bottom air inlet and the side air inlet blow air to form an air flow, which pushes the finished product. The short-grain finished product is lighter in weight and is blown further away from the side air inlet. The partition screen separates the short-grain finished product from the long-grain finished product. During the throwing process, unqualified finished products pass through the screen plate and fall into the debris recovery inclined plate.

[0040] Compared with the prior art, the beneficial effects of the present invention are: the tofu cat litter preparation, drying, cooling and screening integrated preparation equipment,

[0041] (1) A continuous stirring mechanism and a first transfer bin are provided. Various raw materials are sequentially conveyed into the first transfer bin through external equipment. At the same time, a pressure sensor monitors the input amount of various raw materials in real time. The first auger conveyor inputs the proportioned raw materials into the stirring bin under the feed opening. The corresponding second motor drives the stirring shaft and the stirring blades to rotate through the bevel gear set to stir the raw materials in the stirring bin. Similarly, the first motor drives the rotating drum to rotate between the fixed cover and the frame, which is convenient for changing the position of different stirring bins, so that the stirring bin that has completed stirring moves to the top of the discharge opening, so that the raw materials in the stirring bin can enter the bin through the discharge opening. Through the above steps, it is convenient to continuously stir the raw materials while accurately proportioning the materials, and at the same time reduce the amount of raw materials to be stirred at the same time, so that various raw materials can be mixed more evenly quickly.

[0042] (2) A conical guide wheel, a pressure wheel and a planetary gear set are provided. The ring die is placed horizontally. At the same time, multiple pressure wheels are evenly placed on the inside of the ring die. The mixed raw materials are transported into the granulation bin. The third motor drives the conical guide wheel. The conical guide wheel pushes the raw materials to enter evenly between the pressure wheel and the ring die under the action of centrifugal force. At the same time, the third motor drives multiple pressure wheels to rotate at the same time through the planetary gear set, and the worm drive drives the ring die to rotate, so that the ring die and the pressure wheel cooperate to extrude the raw materials and complete the granulation. This granulation method is less affected by gravity. Multiple pressure wheels can be evenly arranged on the inside of the ring die so that the raw materials can enter evenly between each pressure wheel and the ring die, which greatly improves the granulation efficiency.

[0043] (3) A microwave drying box, an air drying and cooling box, a throwing and feeding mechanism and an air supply mechanism are provided. The tofu cat litter is transported and moved inside the microwave drying box and the air drying and cooling box by the throwing and feeding mechanism. The tofu cat litter in the microwave drying box is heated and dried by the microwave dryer during the movement. At the same time, the hot air blower blows the tofu cat litter through the air supply mechanism, and the dry hot air further blows away the moist and hot air to improve the drying efficiency. The cold air blows the tofu cat litter moving in the air drying and cooling box, and the dry cold air blows the tofu cat litter to complete the cooling. The throwing and feeding mechanism throws the tofu cat litter in a cycle, so that the crushed materials in the tofu cat litter are screened through the sieve plate and collected from the crushed material recovery inclined plate. At the same time, the air supply mechanism blows the tofu cat litter in the process of throwing the tofu cat litter, so that the tofu is distributed on the sieve plate according to its own weight. The sieve plate is divided by a mesh, so that the tofu cat litter on the sieve plate is sorted into short-grain tofu cat litter and long-grain tofu cat litter. Through the above steps, the drying airflow and the cooling airflow are used for air separation during the drying and cooling process, which reduces the processing flow and further improves the utilization efficiency of each equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 This is a schematic diagram of the main cross-sectional structure of the present invention;

[0045] Figure 2 This is a schematic diagram of the main cross-sectional structure of the throwing and feeding mechanism of the present invention;

[0046] Figure 3 This is a schematic side sectional structural diagram of the throwing and feeding mechanism of the present invention;

[0047] Figure 4 Schematic diagram of the cross-sectional structure of the continuous stirring mechanism of the present invention from top view;

[0048] Figure 5 This is a schematic diagram of the cross-sectional structure of the box body of the present invention;

[0049] Figure 6 For the present invention Figure 1 A in the middle is an enlarged structural diagram;

[0050] Figure 7 For the present invention Figure 1 The enlarged structural diagram at B in the middle;

[0051] Figure 8 This is a schematic diagram of the three-dimensional cross-sectional structure of the rotary drum of the present invention;

[0052] Figure 9 This is a schematic diagram of the three-dimensional structure of the box body of the present invention;

[0053] Figure 10 This is a schematic diagram of the three-dimensional cross-section structure of the box body of the present invention;

[0054] Figure 11It is a schematic diagram of the three-dimensional structure of the sector gear and the driven gear of the present invention.

[0055] In the figure: 1. Material rack; 2. First transfer bin; 3. First auger conveyor; 4. Fixed cover; 5. Frame; 6. Fixed rod; 7. Continuous stirring mechanism; 71. Rotating drum; 72. First motor; 73. Mixing bin; 74. Bracket; 75. Mixing shaft; 76. Mixing blade; 77. Second motor; 78. Bevel gear set; 8. Material bin; 9. Second auger conveyor; 10. Second transfer bin; 11. Box; 12. Granulating bin; 13. Ring die; 14. Press wheel; 15. Conical guide wheel; 16. Third motor; 17. Planetary gear set; 18. Discharge port; 19. Discharge plate; 20. Scraper; 21. First elevator; 22. Microwave drying box; 23. Second elevator; 24. Air drying and cooling box; 25. Throwing and feeding mechanism ; 252. Movable frame; 253. Compression spring; 254. Crushed material recovery inclined plate; 255. Screen plate; 256. Partition net; 257. Intermittent traction mechanism; 2571. Connecting cable; 2572. Winding reel; 2573. Main shaft; 2574. Fourth motor; 2575. Fan gear; 2576. Driven gear; 26. Microwave dryer; 27. Air supply mechanism; 271. Bottom air inlet pipe; 272. Bottom air inlet; 273. Side air inlet pipe; 274. Side air inlet; 275. Side air outlet pipe; 276. Side air outlet; 277. Filter; 28. Pressure sensor; 29. Flexible connecting pipe; 30. Feed opening; 31. Discharge opening; 32. Worm drive; 33. Hot air blower; 34. Cold air blower. DETAILED DESCRIPTION

[0056] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0057] See also Figure 1-11 The present invention provides a technical solution: an integrated tofu cat litter preparation device, such as Figure 1 and Figure 6 As shown, a first transfer bin 2 is provided on the top of the material rack 1 , and a first auger conveyor 3 is fixedly installed on the bottom of the first transfer bin 2 , and the right end of the first auger conveyor 3 is connected to the fixed cover 4 .

[0058] In a further embodiment, a pressure sensor 28 is provided between the first transfer bin 2 and the rack 1, and a flexible connecting pipe 29 is provided between the first screw conveyor 3 and the feed opening 30. Flexible compensation is carried out between the first screw conveyor 3 and the feed opening 30 through the flexible connecting pipe 29, so that the first screw conveyor 3 and the feed opening 30 are flexibly connected, eliminating the interference of the connecting structure on the first transfer bin 2 and facilitating the pressure sensor 28 to monitor the weight of the first transfer bin 2 in real time.

[0059] As Figure 1 and Figure 6 shown, a frame 5 is provided below the fixed cover 4, and the frame 5 and the fixed cover 4 are fixedly connected by a fixing rod 6.

[0060] In a further embodiment, a feed opening 30 is formed on the surface of the fixed cover 4, and the flexible connecting pipe 29 is connected to the corresponding stirring bin 73 through the feed opening 30. A discharge opening 31 is formed on the surface of the frame 5, and the material bin 8 is connected to the corresponding stirring bin 73 through the discharge opening 31. The unagitated raw materials enter the corresponding stirring bin 73 through the feed opening 30, and the raw materials in the stirred stirring bin 73 are discharged into the material bin 8 through the discharge opening 31.

[0061] As Figure 4 and Figure 8 shown, a continuous stirring mechanism 7 is rotatably connected between the fixed cover 4 and the frame 5, and the continuous stirring mechanism 7 is arranged inside the fixing rod 6.

[0062] In a further embodiment, the continuous stirring mechanism 7 includes a rotating drum 71, a first motor 72, a stirring bin 73, a bracket 74, a stirring shaft 75, stirring blades 76, a second motor 77, and a bevel gear set 78. The upper and lower ends of the rotating drum 71 are respectively rotatably connected to the fixed cover 4 and the frame 5, and the top of the rotating drum 71 penetrates through the fixed cover 4 and is connected to the first motor 72 fixedly installed on the fixed cover 4. Three stirring bins 73 are arranged in a "pin" shape inside the rotating drum 71, and two brackets 74 are fixed inside the stirring bin 73. Stirring blades 76 are welded on the outside of the stirring shaft 75, and the upper and lower ends of the stirring shaft 75 are respectively rotatably connected to the two brackets 74. The second motor 77 corresponding to the stirring bin 73 is fixedly installed on the outside of the rotating drum 71, and the second motor 77 is connected to the upper end of the stirring shaft 75 through the bevel gear set 78. The fixed cover 4 and the frame 5 cooperate to support the rotating drum 71, facilitating the first motor 72 to drive the rotating drum 71 to rotate. At the same time, stirring blades 76 driven by the second motor 77 are arranged in all three stirring bins 73 inside the rotating drum 71, so that when the three stirring bins 73 circulate through the feed opening 30 and the discharge opening 3, the stirring blades 76 inside the stirring bin 73 can continuously carry out stirring operations.

[0063] As Figure 1 、 Figure 7 and Figure 10 As shown, a silo 8 is provided inside the frame 5 , and the lower end of the silo 8 is connected to the second auger conveyor 9 , while the other end of the second auger conveyor 9 is connected to the second transfer silo 10 .

[0064] The second transfer bin 10 is fixed on the top of the box body 11 , and a granulation bin 12 is provided inside the box body 11 . Meanwhile, the bottom of the second transfer bin 10 is communicated with the granulation bin 12 .

[0065] In a further embodiment, a worm drive 32 is fixed to the outside of the box 11, and the worm drive 32 passes through the box 11 and is connected to the ring die 13, so that the worm drive 32 drives the ring die 13 to rotate inside the box 11.

[0066] like Figure 5 、 Figure 9 and Figure 10 The granulation bin 12 is rotatably connected to a ring die 13, and a pressure wheel 14 is provided inside the ring die 13. The upper and lower ends of the pressure wheel 14 are rotatably connected to the upper and lower sides of the inner wall of the box body 11. The center of the granulation bin 12 is rotatably connected to a conical guide wheel 15, and the lower end of the conical guide wheel 15 passes through the box body 11 and is rotatably connected thereto. A third motor 16 is fixedly installed at the bottom of the box body 11, and the third motor 16 is connected to the conical guide wheel 15. A planetary gear set 17 is provided at the bottom of all the pressure wheels 14, and the pressure wheels 14 are connected to the third motor 16 through the planetary gear set 17. A discharge port 18 is provided on the outside of the box body 11, and a discharge plate 19 is fixed to the outside of the box body 11. At the same time, the discharge plate 19 is located at the lower side of the discharge port 18. A scraper 20 is fixed inside the discharge port 18, and the scraper 20 is arranged in contact with the outside of the ring die 13.

[0067] like Figure 1 、 Figure 2 and Figure 3 As shown, the lower end of the first elevator 21 is connected to the discharge plate 19, and the upper end of the first elevator 21 is connected to the upper end of the microwave drying box 22, the lower end of the microwave drying box 22 is connected to the lower end of the second elevator 23, and the upper end of the second elevator 23 is connected to the upper end of the air drying cooling box 24, and the inside of the microwave drying box 22 and the inside of the air drying cooling box 24 are staggered with throwing and feeding mechanisms 25, and a microwave dryer 26 is fixed inside the microwave drying box 22, and the microwave dryer 26 is located above the throwing and feeding mechanism 25 inside the microwave drying box 22.

[0068] In a further embodiment, the throwing and feeding mechanism 25 includes a fixed frame 251, a movable frame 252, a compression spring 253, a debris recovery inclined plate 254, a sieve plate 255, a partition 256, and an intermittent traction mechanism 257. The fixed frame 251 is tilted and arranged inside the microwave drying box 22 or inside the air drying and cooling box 24, and a movable frame 252 is arranged above the fixed frame 251 in parallel. The movable frame 252 and the fixed frame 251 are connected by a compression spring 253. The debris recovery inclined plate 254 is fixedly installed on the fixed frame 251, the sieve plate 255 is fixedly installed on the movable frame 252, and a sieve is fixed in the middle of the sieve plate 255. The bottom of the movable frame 252 and the top of the fixed frame 251 are connected by an intermittent traction mechanism 257. Then, the intermittent traction mechanism 257 pulls the movable frame 252 close to the fixed frame 251, and the compression spring 253 contracts and accumulates energy. When the intermittent traction mechanism 257 releases the movable frame 252, the compression spring 253 quickly pushes the movable frame 252 and throws the tofu cat litter. At the same time, the hot air blower 33 or the cold air blower 34 blows out air in a pulsed manner through the air supply mechanism 27. The air flow blows and throws the tofu cat litter to a high point to sort the tofu cat litter. Then the tofu cat litter falls and passes through the screen plate 255 for secondary screening. The crushed material at the screening place falls into the crushed material recovery inclined plate 254 and is discharged to the external recovery equipment. Since the tofu cat litter is in the shape of long particles, the air separation equipment has higher screening accuracy than the vibration screening equipment. At the same time, it is not easy to cause the tofu cat litter to break into small pieces during air separation.

[0069] like Figure 3 and Figure 11 As shown, the intermittent traction mechanism 257 includes a connecting cable 2571, a winding disk 2572, a main shaft 2573, a fourth motor 2574, a sector gear 2575, and a driven gear 2576. The main shaft 2573 is rotatably installed on the top of the fixed frame 251, and multiple winding disks 2572 are evenly fixed on the outside of the main shaft 2573. The winding disk 2572 is fixedly connected to one end of the connecting cable 2571, and the other end of the connecting cable 2571 is fixedly connected to the bottom of the movable frame 252. A fourth motor 2574 is fixedly installed on one side of the fixed frame 251, and a sector gear 2575 is provided on the fourth motor 2574. A driven gear 2576 is fixed on one side of the main shaft 2573, and the driven gear 2576 is engaged with the sector gear 2575. When the sector gear 2575 is engaged with the driven gear 2576, the fourth motor 2574 drives the main shaft 2573 to rotate. At the same time, the winding disk 2572 on the main shaft 2573 reels the connecting cable 2571. Once the sector gear 2575 is disengaged from the driven gear 2576, the compression spring 253 pushes the movable frame 252, so that the connecting cable 2571 pulls the winding disk 2572 to rotate in the opposite direction. At the same time, the main shaft 2573 and the driven gear 2576 rotate in the opposite direction until the driven gear 2576 is engaged with the rotating sector gear 2575 again, so as to facilitate the winding and releasing of the connecting cable 2571 at a fixed frequency.

[0070] like Figure 1 and Figure 3 As shown, an air supply mechanism 27 is fixed on the throwing and feeding mechanism 25 .

[0071] In a further embodiment, the air supply mechanism 27 includes a bottom air inlet duct 271, a bottom air inlet 272, a side air inlet duct 273, a side air inlet 274, a side air outlet duct 275, a side air outlet 276, and a filter 277. A bottom air inlet 272 is provided at the bottom of the fixing frame 251, and the bottom air inlet 272 is connected to the bottom air inlet duct 271. A side air inlet 274 is provided on one side of the fixing frame 251, and the side air inlet 274 is connected to the side air inlet duct 273. A side air outlet 276 is provided on the other side of the fixing frame 251, and the side air outlet 276 is connected to the side air outlet duct 275. A filter 277 is fixedly installed inside the bottom air inlet 272, the side air inlet 274 and the side air outlet 276. The side air inlet duct 273 and the bottom air inlet duct 271 in the microwave drying box 22 are connected to the hot air blower 33, and the air drying and cooling The side air inlet duct 273 and the bottom air inlet duct 271 in the box 24 are both connected to the cold air fan 34, and the hot air fan 33 conveys air to the bottom air inlet 272 and the side air inlet 274 through the bottom air inlet duct 271 and the side air inlet duct 273. At this time, the air flow is ejected from the bottom and one side of the throwing and feeding mechanism 25. The air flow ejected from the bottom blows up the tofu cat litter, and the air flow ejected from the side blows the tofu cat litter away from the side air inlet 274 according to its own weight. At the same time, the ejected air flow is discharged to the outside through the side air outlet duct 275 and the side air outlet 276. Similarly, the air flow blown by the cold air fan blows the tofu cat litter in the air-drying and cooling box 24 to move in the same way. The tofu cat litter of different weights is blown and screened by the above structure, and the tofu cat litter is dried or cooled according to the air flow characteristics blown by the hot air fan and the cold air fan themselves.

[0072] A method for preparing tofu cat litter comprises the following steps:

[0073] (1) Accurate proportions of various ingredients

[0074] a. External conveying equipment sequentially conveys raw materials to the first transfer bin 2. The flexible connecting pipe 29 eliminates the rigid connection between the first transfer bin 2 and other fixed components. The pressure sensor 28 monitors the weight change of the first transfer bin 2 in real time and records and controls the input of different raw materials in sequence.

[0075] b. The first auger feeder runs in the reverse direction to block the communication between the first transfer bin 2 and the continuous stirring mechanism 7.

[0076] (2) Mixing of raw materials

[0077] a. The first motor 72 drives the rotating drum 71 to rotate, and the rotating drum 71 rotates between the fixed cover 4 and the frame 5, so that the positions of different mixing chambers 73 are interchanged, and at the same time, the raw materials in the mixing chambers 73 are synchronously moved.

[0078] b. The second motor 77 drives the stirring shaft 75 to rotate through the bevel gear set 78 , and the stirring blades 76 fixed on the stirring shaft 75 rotate accordingly to stir the raw materials in the stirring chamber 73 .

[0079] (3) Extrusion granulation

[0080] a. The second auger conveyor 9 pushes the raw materials into the granulation bin 12, and the third motor 16 drives the conical guide wheel 15 to rotate. The conical guide wheel 15 pushes the raw materials close to the inner wall of the ring die 13 under the action of centrifugal force;

[0081] b. The third motor 16 drives the pressing wheel 14 to rotate through the planetary gear set 17, and the worm drive 32 drives the ring die 13 to rotate. The pressing wheel 14 and the ring die 13 cooperate to extrude the raw material, so that the raw material is pressed into the ring die 13 and granulation is completed;

[0082] c. When the ring die 13 rotates, it moves relative to the scraper 20 provided on its outer side. The scraper 20 scrapes off the raw materials extruded from the ring die 13 and forms finished products. The finished products fall into the discharge plate 19 and slide along the inclined discharge plate 19 into the first elevator 21;

[0083] (4) Drying and screening

[0084] a. The fourth motor 2574 intermittently drives the main shaft 2573 to rotate through the sector gear 2575 and the driven gear 2576. The main shaft 2573 reels the connecting cable 2571 and pulls the movable frame 252 toward the fixed frame 251, and the compressed spring 253 pushes the movable frame 252 away from the fixed frame 251 in a circular operation, pushing the finished product to move progressively on the inclined screen plate 255.

[0085] b. The microwave dryer 26 emits microwaves and heats the finished product on the sieve plate 255. At the same time, the hot air blower 33 delivers dry hot air through the bottom air inlet 272 and the side air inlet 274. The hot air blows away the hot and humid air and is discharged through the side air outlet 276.

[0086] c. When the sieve plate 255 pushes the finished products and tosses them up, air is blown from the bottom air inlet 272 and the side air inlet 274 to form an air flow. The air flow pushes the finished products. The lighter short-grain finished products are blown further away from the side air inlet 274. The screen 256 separates the short-grain finished products from the long-grain finished products. During the tossing process, unqualified finished products pass through the sieve plate 255 and fall into the debris recovery inclined plate 254.

[0087] (5) Cooling screening

[0088] a. The fourth motor 2574 intermittently drives the main shaft 2573 to rotate through the sector gear 2575 and the driven gear 2576. The main shaft 2573 reels the connecting cable 2571 and pulls the movable frame 252 toward the fixed frame 251 until the sector gear 2575 and the driven gear 2576 are disengaged. At this time, the compression spring 253 pushes the movable frame 252 away from the fixed frame 251 quickly. The above two motion states operate alternately and cyclically, pushing the finished product to move progressively on the inclined screen plate 255.

[0089] b. The bottom air inlet 272 and the side air inlet 274 of the air cooler 34 deliver dry cold air, which blows away the heat of the finished product and is discharged through the side air outlet 276;

[0090] c. When the sieve plate 255 pushes the finished products and throws them up, the bottom air inlet 272 and the side air inlet 274 blow air to form an air flow, which pushes the finished products. The short-grain finished products are lighter in weight and are blown further away from the side air inlet 274. The partition net 256 separates the short-grain finished products from the long-grain finished products. During the throwing process, unqualified finished products pass through the sieve plate 255 and fall into the debris recovery inclined plate 254.

[0091] When in use, the external conveying equipment conveys the raw materials into the first transfer bin 2 in turn. At this time, the pressure sensor 28 between the material rack 1 and the first transfer bin 2 monitors the conveying amount of the raw materials in real time, and controls the external conveying equipment through the monitoring data, so that various raw materials are accurately input into the first transfer bin 2 according to the proportion, and the first auger conveyor 3 is started. The first auger conveyor 3 pushes the proportioned raw materials in the first transfer bin 2 through the flexible connecting pipe 29 and the feed opening 30 into the corresponding mixing bin 73, and the second motor 77 is started. The second motor 77 drives the mixing shaft 75 to rotate through the bevel gear set 78, and the mixing blades 76 on the outside of the mixing shaft 75 rotate accordingly and stir the raw materials in the mixing bin 73. After the stirring is completed, the first motor 72 is started, and the first motor 72 The drum 71 is driven to rotate, so that each mixing bin 73 exchanges positions. The mixing bin 73 containing the mixed raw materials rotates to the top of the discharge opening 31, so that the raw materials can enter the silo 8 through the discharge opening 31, and the empty mixing bin 73 rotates to the bottom of the feed opening 30, so that the three mixing bins 73 can circulate the feeding, mixing and discharging. The second auger conveyor 9 is started, and the second auger conveyor 9 pushes the raw materials in the silo 8 into the second transfer bin 10. The raw materials in the second transfer bin 10 fall into the center of the granulation bin 12. The third motor 16 is started, and the third motor 16 drives the conical guide wheel 15 to rotate. The conical guide wheel 15 pushes the raw materials, so that the raw materials move to between the ring die 13 and the pressure wheel 14 under the action of centrifugal force. The third motor 16 drives the conical guide wheel 15 to rotate. As the wheel 15 rotates, all the pressure wheels 14 are driven to rotate through the planetary gear set 17, and the worm drive 32 is started. The worm drive 32 drives the ring die 13 to rotate. The ring die 13 and the pressure wheel 14 cooperate to extrude the raw materials in the granulation bin 12, so that the raw materials are formed through the ring die 13. During the rotation of the ring die 13, relative motion occurs between the ring die 13 and the scraper 20, so that the scraper 20 scrapes the tofu cat litter squeezed out of the surface of the ring die 13. The tofu cat litter falls through the discharge port 18 to the discharge plate 19 and moves along the discharge plate 19 to the first hoist 21. The first hoist 21 is started. The first hoist 21 lifts the tofu cat litter into the throwing and feeding mechanism 25 of the microwave drying box 22. The microwave dryer 26 in the microwave drying box 22 continuously heats the tofu cat litter and dries it. The hot air is started The hot air blown by the hot air blower 33 enters the microwave drying box 22 through the air supply mechanism 27 to blow away the hot and humid air and further dry the tofu cat litter. The dried tofu cat litter moves to the second elevator 23, which is started. The second elevator 23 transports the tofu cat litter to the throwing and feeding mechanism 25 in the air drying and cooling box 24. The cold air blown by the cold air blower 34 is started. The cold air blown by the cold air blower 34 enters the air drying and cooling box 24 through the air supply mechanism 27 and cools the tofu cat litter. When the tofu cat litter passes through the throwing and feeding mechanism 25, the fourth motor 2574 is started. The fourth motor 2574 drives the driven gear 2576 to rotate intermittently through the fan gear 2575. When the driven gear 2576 rotates, it drives the main shaft 2573 to rotate.The reel 2572 on the outside of the main shaft 2573 reels the connecting cable 2571 and pulls the movable frame 252 close to the fixed frame 251. At the same time, the movable frame 252 squeezes the compression spring 253 to accumulate energy in the compression spring 253. When the fan gear 2575 is disengaged from the driven gear 2576, the compression spring 253 pushes the movable frame 252 to quickly move away from the fixed frame 251, so that the tofu cat litter placed on the partition net 256 on the movable frame 252 is thrown up. At the same time, the hot air blower 33 or the cold air blower 34 blows out air through the bottom air inlet 271 and the side air inlet 273. The blowing frequency of the hot air blower 33 and the cold air blower 34 matches the throwing frequency of the tofu cat litter. The air flow blows through the bottom air inlet 272 and the side air inlet 274. Tofu cat litter, while the airflow passes through the side air outlet 276 and the side air outlet duct 275 and is discharged to the outside, the regular flow of the airflow pushes the tofu cat litter, and the tofu cat litter is regularly distributed on the screen plate 255 according to different weights. At the same time, the screen 256 divides the screen plate 255, so that the long-grain tofu cat litter and the short-grain tofu cat litter are located on both sides of the screen plate and are sorted. At the same time, the screen plate and the second elevator 23 separate and transport the long-grain tofu cat litter and the short-grain tofu cat litter during the conveying process. In the above process, the tofu cat litter is cyclically thrown in an inclined direction, so that the tofu cat litter gradually moves along the screen plate. At the same time, the fragments in the tofu cat litter are screened by the screen plate 255 and fall into the fragment recovery inclined plate 254 and are discharged from the discharge port to the external waste collection equipment.

[0092] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0093] The directions or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the protection content of the present invention.

[0094] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An integrated tofu cat litter preparation device, comprising a material rack (1), a continuous stirring mechanism (7), a granulation bin (12), a first elevator (21), a microwave drying box (22), a second elevator (23), an air drying and cooling box (24), a throwing and feeding mechanism (25) and a flexible connecting pipe (29), characterized in that: A first transfer bin (2) is provided on the top of the material rack (1), and a first auger conveyor (3) is fixedly installed on the bottom of the first transfer bin (2), and the right end of the first auger conveyor (3) is connected to the fixed cover (4), a frame (5) is provided below the fixed cover (4), and the frame (5) and the fixed cover (4) are fixedly connected via a fixed rod (6), a continuous stirring mechanism (7) is rotatably connected between the fixed cover (4) and the frame (5), and the continuous stirring mechanism (7) is provided on the inner side of the fixed rod (6), a silo (8) is provided inside the frame (5), and the lower end of the silo (8) is connected to the second auger conveyor (9), and the other end of the second auger conveyor (9) is connected to the second transfer bin (10); The second transfer bin (10) is fixed on the top of the box body (11), and a granulation bin (12) is provided inside the box body (11). At the same time, the bottom of the second transfer bin (10) is connected to the granulation bin (12). A ring die (13) is rotatably connected inside the granulation bin (12), and a pressure wheel (14) is provided inside the ring die (13). The upper and lower ends of the pressure wheel (14) are rotatably connected to the upper and lower sides of the inner wall of the box body (11). The center of the granulation bin (12) is rotatably connected to a conical guide wheel (15), and the lower end of the conical guide wheel (15) passes through the box body (11) and is rotatably connected thereto. The box body (11) 1) A third motor (16) is fixedly installed at the bottom, and the third motor (16) is connected to the conical guide wheel (15); a planetary gear set (17) is provided at the bottom of the pressure wheel (14), and the pressure wheel (14) is connected to the third motor (16) through the planetary gear set (17); a discharge port (18) is provided on the outside of the box body (11), and a discharge plate (19) is fixed on the outside of the box body (11), and the discharge plate (19) is located at the lower side of the discharge port (18); a scraper (20) is fixed inside the discharge port (18), and the scraper (20) is arranged in contact with the outside of the ring die (13); The lower end of the first elevator (21) is connected to the discharge plate (19), and the upper end of the first elevator (21) is connected to the upper end of the microwave drying box (22), the lower end of the microwave drying box (22) is connected to the lower end of the second elevator (23), and the upper end of the second elevator (23) is connected to the upper end of the air drying cooling box (24), and the interior of the microwave drying box (22) and the interior of the air drying cooling box (24) are staggeredly provided with throwing and feeding mechanisms (25), and a microwave dryer (26) is fixed inside the microwave drying box (22), and the microwave dryer (26) is located above the throwing and feeding mechanism (25) inside the microwave drying box (22), and an air supply mechanism (27) is fixed on the throwing and feeding mechanism (25); The throwing and feeding mechanism (25) includes a fixed frame (251), a movable frame (252), a compression spring (253), a crushed material recovery inclined plate (254), a sieve plate (255), a partition (256), and an intermittent traction mechanism (257). The fixed frame (251) is tilted and arranged inside the microwave drying box (22) or the air drying and cooling box (24), and the movable frame (252) is arranged parallel to the fixed frame (251). The movable frame (252) and the fixed frame (251) are connected via a compression spring (253). The crushed material recovery inclined plate (254) is fixedly mounted on the fixed frame (251). The sieve plate (255) is fixedly mounted on the movable frame (252), and a sieve is fixed in the middle of the sieve plate (255). The bottom of the movable frame (252) and the top of the fixed frame (251) are connected via an intermittent traction mechanism (257). The intermittent traction mechanism (257) comprises a connecting cable (2571), a winding reel (2572), a main shaft (2573), a fourth motor (2574), a sector gear (2575), and a driven gear (2576); the main shaft (2573) is rotatably mounted on the top of the fixed frame (251), and a plurality of winding reels (2572) are evenly fixed on the outside of the main shaft (2573); the winding reels (2572) are fixedly connected to one end of the connecting cable (2571), and the other end of the connecting cable (2571) is fixedly connected to the bottom of the movable frame (252); the fourth motor (2574) is fixedly mounted on one side of the fixed frame (251), and the sector gear (2575) is provided on the fourth motor (2574); the driven gear (2576) is fixed on one side of the main shaft (2573), and the driven gear (2576) is meshed with the sector gear (2575); The air supply mechanism (27) comprises a bottom air inlet pipe (271), a bottom air inlet (272), a side air inlet pipe (273), a side air inlet (274), a side air outlet pipe (275), a side air outlet (276), and a filter (277). The bottom of the fixing frame (251) is provided with a bottom air inlet (272), and the bottom air inlet (272) is connected to the bottom air inlet pipe (271). A side of the fixing frame (251) is provided with a side air inlet (274), and the side air inlet (274) is connected to the side air inlet pipe (273). The fixing frame ( 251) is provided with a side air outlet (276) on the other side, and the side air outlet (276) is connected to the side air outlet pipe (275), and the bottom air inlet (272), the side air inlet (274) and the side air outlet (276) are fixedly installed with a filter (277), the side air inlet pipe (273) and the bottom air inlet pipe (271) in the microwave drying box (22) are connected to the hot air blower (33), and the side air inlet pipe (273) and the bottom air inlet pipe (271) in the air drying and cooling box (24) are connected to the cold air blower (34).

2. The tofu cat litter integrated preparation device according to claim 1, characterized in that: A pressure sensor (28) is provided between the first transfer bin (2) and the rack (1), and a flexible connecting pipe (29) is provided between the first screw conveyor (3) and the feed opening (30).

3. The tofu cat litter integrated preparation device according to claim 2, characterized in that: The surface of the fixed cover (4) is provided with a feed opening (30), the flexible connecting pipe (29) is connected to the corresponding mixing bin (73) through the feed opening (30), the surface of the frame (5) is provided with a discharge opening (31), and the silo (8) is connected to the corresponding mixing bin (73) through the discharge opening (31).

4. The tofu cat litter integrated preparation device according to claim 3, characterized in that: The continuous mixing mechanism (7) includes a rotating drum (71), a first motor (72), a mixing bin (73), a bracket (74), a mixing shaft (75), mixing blades (76), a second motor (77), and a bevel gear set (78). The upper and lower ends of the rotating drum (71) are respectively rotatably connected to the fixed cover (4) and the frame (5), and the top of the rotating drum (71) penetrates the fixed cover (4) and is connected to the first motor (72) fixedly installed on the fixed cover (4). Three mixing bins (73) are arranged in a "pin" shape inside the rotating drum (71), and two brackets (74) are fixed inside the mixing bin (73). The mixing blades (76) are welded to the outside of the mixing shaft (75), and the upper and lower ends of the mixing shaft (75) are respectively rotatably connected to the two brackets (74). The second motor (77) corresponding to the mixing bin (73) is fixedly installed on the outside of the rotating drum (71), and the second motor (77) is connected to the upper end of the mixing shaft (75) through the bevel gear set (78).

5. The tofu cat litter integrated preparation device according to claim 4, characterized in that: A worm drive (32) is fixed to the outside of the box body (11), and the worm drive (32) penetrates the box body (11) and is connected to the ring die (13).

6. A method for preparing tofu cat litter, using the tofu cat litter integrated preparation equipment in claim 5, the method comprising the following steps: (1) Precise proportioning of various ingredients a. External conveying equipment sequentially conveys raw materials to the first transfer bin (2). The flexible connecting pipe (29) eliminates the rigid connection between the first transfer bin (2) and other fixed components. The pressure sensor (28) monitors the weight change of the first transfer bin (2) in real time, and sequentially records and controls the input of different raw materials; b. The first screw feeder runs in reverse to block the connection between the first transfer bin (2) and the continuous mixing mechanism (7); (2) Raw material mixing a. The first motor (72) drives the rotating drum (71) to rotate. The rotating drum (71) rotates between the fixed cover (4) and the frame (5), so that the positions of different mixing bins (73) are interchanged, and at the same time, the raw materials in the mixing bins (73) move synchronously; b. The second motor (77) drives the mixing shaft (75) to rotate through the bevel gear set (78), and the mixing blades (76) fixed on the mixing shaft (75) rotate accordingly to mix the raw materials in the mixing bin (73); (3) Extrusion granulation a. The second auger conveyor (9) pushes the raw materials into the granulation bin (12), and the third motor (16) drives the conical guide wheel (15) to rotate, and the conical guide wheel (15) pushes the raw materials close to the inner wall of the ring die (13) under the action of centrifugal force; b. The third motor (16) drives the pressing wheel (14) to rotate through the planetary gear set (17), and the worm drive (32) drives the ring die (13) to rotate. The pressing wheel (14) and the ring die (13) cooperate to extrude the raw material, so that the raw material is pressed into the ring die (13) and granulation is completed; c. When the ring die (13) rotates, it moves relative to the scraper (20) provided on the outside thereof, and the scraper (20) scrapes off the raw material extruded from the ring die (13) to form a finished product, which falls onto the discharge plate (19) and slides along the inclined discharge plate (19) into the first elevator (21); (4) Drying and screening a. The fourth motor (2574) intermittently drives the main shaft (2573) to rotate through the sector gear (2575) and the driven gear (2576). The main shaft (2573) reels the connecting cable (2571) and pulls the movable frame (252) toward the fixed frame (251), thereby contracting and compressing the spring (253) to push the movable frame (252) away from the fixed frame (251) in a cyclic operation, thereby pushing the finished product to move progressively on the inclined screen plate (255); b. The microwave dryer (26) emits microwaves and heats the finished product on the sieve plate (255). At the same time, the hot air blower (33) delivers dry hot air through the bottom air inlet (272) and the side air inlet (274). The hot air blows away the hot and humid air and is discharged through the side air outlet (276); c. When the screen plate (255) pushes the finished product and throws it up, the bottom air inlet (272) and the side air inlet (274) blow air to form an air flow, which pushes the finished product. The short-grain finished product is lighter in weight and is blown further away from the side air inlet (274). The screen (256) separates the short-grain finished product from the long-grain finished product. During the throwing process, unqualified finished products pass through the screen plate (255) and fall into the debris recovery inclined plate (254); (5) Cooling screening a. The fourth motor (2574) intermittently drives the main shaft (2573) to rotate through the sector gear (2575) and the driven gear (2576). The main shaft (2573) reels the connecting cable (2571) and pulls the movable frame (252) toward the fixed frame (251), thereby contracting and compressing the spring (253) to push the movable frame (252) away from the fixed frame (251) in a cyclic operation, thereby pushing the finished product to move progressively on the inclined screen plate (255); b. The bottom air inlet (272) and the side air inlet (274) of the air cooler (34) deliver dry cold air, which blows away the heat of the finished product and is discharged through the side air outlet (276); c. When the sieve plate (255) pushes the finished product and throws it up, the bottom air inlet (272) and the side air inlet (274) blow air to form an air flow, which pushes the finished product. The short-grain finished product is lighter in weight and is blown further away from the side air inlet (274). The partition (256) separates the short-grain finished product from the long-grain finished product. During the throwing process, unqualified finished products pass through the sieve plate (255) and fall into the debris recovery inclined plate (254).

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