A pet feed production crushing device and a crushing method

Abstract

This invention relates to the field of pet food production technology, specifically to a crushing device for pet food production. The device includes a crushing module and a power module. The crushing module includes a transmission box, a collection bin on one side of the transmission box, an opening and closing door on the side wall of the collection bin, and a collection drawer with screening function inside the door. A crushing box is connected to the top of the collection bin, and a tiered crushing mechanism is located inside the crushing box. A raw material bin is connected to the top of the crushing box, and the raw material bin has a top cover. The power module includes a foot-operated drive wheel. The transmission input end of the crushing mechanism extends into the transmission box and is connected to the foot-operated drive wheel via a transmission chain, forming a drive structure that allows consumers to participate. This invention overcomes industry technical biases and is suitable for application scenarios that meet the needs of emerging business models, allowing consumers to participate in the pet food production process and improving market transparency and consumer acceptance.

Description

Technical Field

[0001] This invention relates to the field of pet food production technology, and in particular to a crushing device and crushing method for pet food production. Background Technology

[0002] Pet food is a high-end animal food specifically designed for pets and small animals, falling between human food and traditional livestock feed. Its main function is to provide various pets with the most basic nutrients needed for life, growth, development, and health. It has advantages such as comprehensive nutrition, high digestibility and absorption rate, scientific formula, quality standards, convenient feeding and use, and the ability to prevent certain diseases.

[0003] A search revealed that patent application number CN202422845186.2 discloses a crushing device for pet food processing, comprising a base plate. Two support plates are fixedly connected to the upper surface of the base plate. First bearings are fixedly embedded on the sides of the two support plates that are close to each other. Connecting rods are fixedly connected to the inner rings of the two first bearings. A fixing plate is fixedly connected to the right side of one of the support plates. This device uses a second drive motor to rotate the support rods and multiple sets of crushing blades inside the crushing cylinder, thereby crushing the feed placed inside. During the crushing process, the second drive motor, in conjunction with the two connecting rods, can drive the crushing cylinder to rotate in the opposite direction, causing the raw material inside the crushing cylinder to tumble and make full contact with the crushing blades.

[0004] In this technical solution, the crushing device is powered by an electric motor, which is consistent with the crushing devices used in conventional feed processing. However, with the improvement of living standards and the continuous changes in consumption habits, the health of pet food is receiving increasing attention. After long-term market research, the inventors found that some consumers are concerned about the quality of traditionally manufactured pet food, believing that companies use inferior raw materials to reduce costs. Furthermore, due to the lack of market transparency in traditional pet food manufacturing, consumers are unlikely to eliminate their concerns about quality even if they are willing to increase their spending. Based on this, the inventors also found that with the wave of innovation in the market, more and more traditional processing plants are transforming from simple product manufacturing to a new model of cultural empowerment through business innovation. For example, traditional tea processing companies are adding tea culture research and learning bases, allowing ordinary consumers to experience and learn more about the tea processing process firsthand. This serves as a medium to bridge the gap between businesses and consumers, increase consumer recognition, and ultimately achieve a "win-win" situation.

[0005] Therefore, in this context, it is particularly important to design a new crushing device and crushing method for pet food to meet the application needs of the aforementioned emerging business models. Summary of the Invention

[0006] This invention provides a crushing device and crushing method for pet production, which solves the above-mentioned problems.

[0007] This invention is implemented as follows:

[0008] A crushing device for pet food production includes a crushing module and a power module. The crushing module includes a transmission box, a collection bin on one side of the transmission box, an opening and closing door on the side wall of the collection bin, a collection drawer with screening function inside the opening and closing door, a crushing box connected to the top of the collection bin, a tiered crushing mechanism inside the crushing box, a raw material bin connected to the top of the crushing box, and a top cover on the top of the raw material bin. The power module includes a foot-operated drive wheel, the transmission input end of the crushing mechanism extends into the transmission box and is connected to the foot-operated drive wheel through a transmission chain, forming a drive structure that consumers can participate in.

[0009] The crushing mechanism includes crushing blades and grinding rollers distributed vertically. Both the crushing blades and grinding rollers are double roller structures. The crushing blades have several serrated blade structures distributed along their main shaft axially, and the serrated blade structures on adjacent crushing blades are staggered and twisted together. The grinding rollers include a rotating shaft, on which several grinding flanges are provided at intervals along the axial direction, and a radially recessed material passage groove is formed between adjacent grinding flanges.

[0010] The grinding roller extends axially to the outside of the transmission box at one end. The grinding roller has an inner material cavity inside. The inner wall of the material trough has several discharge holes that communicate with the inner material cavity. The inner material cavity has an opening structure at the end of the grinding roller located outside the transmission box, and a material cavity cover is provided at the opening.

[0011] Based on the above technical solution, the power module also includes a frame, foot pedals, a seat and handlebars on the frame, a base for supporting the ground at the bottom of the frame, and a tension frame between the frame and the transmission box.

[0012] Based on the above technical solution, several collection drawers are arranged longitudinally at intervals, and filter screens with gradually increasing mesh size are provided between adjacent collection drawers from top to bottom.

[0013] Based on the above technical solution, the inner wall of the material collection drawer and the material collection bucket is provided with a pull-out slide rail, and the material collection drawer can be pulled out to the outside of the material collection bucket through the opening at the door.

[0014] Based on the above technical solution, the material collection drawer includes a rectangular enclosure, with a boss at the bottom of the inner side wall of the enclosure, a washer on the boss, a base frame at the top of the washer, a top frame fastened to the base frame, and a filter screen held between the top frame and the base frame.

[0015] Based on the above technical solution, the inner material cavity is filled with a number of tamping balls, and the outer surface of the tamping balls is evenly distributed with pointed flanges.

[0016] Based on the above technical solution, the surface of the grinding flange is provided with anti-slip texture.

[0017] A method for crushing pet food during production, characterized by employing a crushing apparatus for pet food production as described in any one of the above-mentioned methods, comprising the following steps:

[0018] S1, Adding ingredients;

[0019] First, open the top cover, pour the raw material to be crushed into the raw material bucket, seal the top cover, add powder or granular auxiliary material into the inner material chamber, and close the material chamber cover.

[0020] S2, Autonomous-driven crushing;

[0021] Users drive the foot-operated drive wheel to rotate by stepping on it, which in turn drives the core structure of the crushing mechanism to rotate, thus performing tiered crushing of the raw materials.

[0022] S3, Crushed material screening;

[0023] The crushed material falls onto the collection drawer below, where it is used to process coarse and fine materials.

[0024] Compared with the prior art, the present invention has at least the following advantages:

[0025] This invention overcomes the technological biases of traditional pet food production through agile and insightful market observation. Its unique foot-operated drive design transforms consumers from bystanders into direct participants in the production process. This hands-on experience significantly enhances consumer recognition and loyalty, forging a closer bond between businesses and consumers. Consumers can personally participate in the pet food crushing and production process, witnessing firsthand the gradual crushing and screening of raw materials into finished products. This provides a more intuitive and in-depth understanding of product quality, effectively eliminating concerns about quality issues associated with traditional production methods.

[0026] The apparatus and method of this invention provide pet food companies with new ideas for business model innovation. Companies can attract consumers to participate in the production process, enhance brand awareness and reputation, and achieve a win-win situation for both the company and consumers by conducting consumer experience activities and establishing pet food research and learning bases.

[0027] This invention, through a tiered crushing mechanism and filters of varying mesh sizes, can produce pet food with different particle sizes, meeting the personalized needs of different breeds and growth stages of pets for feed particle size, thus enhancing the product's market competitiveness. Specifically, during the crushing process, the grinding rollers, while dividing the material, can also utilize the cooperation of the inner material chamber and the discharge hole to ensure that auxiliary materials are evenly added to the crushed material as it passes through the feed trough. This ingenious structural design significantly improves mixing efficiency while saving structural space. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the crushing device used in pet food production in Example 1;

[0030] Figure 2 for Figure 1 Schematic diagram of the structure of the medium crushing module;

[0031] Figure 3 for Figure 2 A sectional view;

[0032] Figure 4 for Figure 2 Another sectional view;

[0033] Figure 5 This is a schematic diagram of the structure of the grinding roller;

[0034] Figure 6 This is an exploded view of the aggregate drawer structure;

[0035] Figure 7 A cross-sectional view of a single grinding roller;

[0036] Figure 8 This is a cross-sectional view of a single grinding roller in another embodiment.

[0037] The diagram is labeled as follows: 100, Crushing Module; 110, Transmission Box; 120, Workbench; 130, Display Screen; 200, Power Module; 210, Transmission Chain; 220, Foot-operated Drive Wheel; 230, Tensioner Frame; 300, Collection Bucket; 310, Opening Door; 320, Collection Drawer; 321, Enclosure; 322, Washer; 323, Base Frame; 324, Top Frame; 325, Filter Screen; 400, Raw Material Bucket; 410, Top Cover; 500, Crushing Box; 510, Crushing Blade; 520, Grinding Roller; 521, Rotating Shaft; 522, Grinding Flange; 523, Material Passage Groove; 524, Inner Material Chamber; 525, Discharge Hole; 526, Material Chamber Cover; 527, Crushing Ball; 530, Transmission Wheel. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0039] In the description of this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0040] 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 may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0041] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0042] Example 1: Combination Figures 1 to 6As shown in the figure, this embodiment discloses a crushing device for pet food production, which mainly consists of two parts: a crushing module 100 and a power module 200. This modular design makes the device structure clear and facilitates assembly, maintenance and upgrades.

[0043] The crushing module 100 includes a transmission box 110, which serves as the core transmission component of the crushing module 100 and undertakes the crucial task of transmitting power. A collection bin 300 is located on one side of the transmission box 110, providing space for collecting the crushed material. A workbench 120 is located on the top of the transmission box 110, and a display screen 130 is mounted on the workbench 120. The display screen 130 is electrically connected to a controller, which is used to connect and control the operating parameters of the equipment (such as setting the counter module or auxiliary assist system).

[0044] The material collection hopper 300 has an opening and closing door 310 on its side wall. One side of the opening and closing door 310 is connected to the outer side wall of the material collection hopper 300 by a hinge, which facilitates the operation of the internal material collection drawer 320. The opening and closing door 310 and the material collection hopper 300 are also provided with a locking structure and a sealing gasket 322 structure.

[0045] Furthermore, the collection bin 300, located inside the opening and closing door 310, is equipped with a collection drawer 320 that has a screening function. Several collection drawers 320 are longitudinally spaced, and filter screens 325 with gradually increasing mesh sizes are provided between adjacent collection drawers 320 from top to bottom. Figure 3 and Figure 4 As shown, this embodiment features a three-layer collection drawer 320. This design allows the crushed material to be collected in stages according to particle size, meeting the needs of different pets for feed particle size. It should be noted that the collection drawer 320 and the inner wall of the collection bin 300 are equipped with pull-out rails. The collection drawer 320 can be pulled outwards through the opening at the opening door 310 to the outside of the collection bin 300, facilitating cleaning and replacement of the filter screen 325.

[0046] like Figure 6 As shown, the collection drawer 320 includes a rectangular enclosure 321. A boss is provided at the bottom of the inner wall of the enclosure 321, and a washer 322 is placed on the boss. The top of the washer 322 abuts against a base frame 323. A top frame 324 is fastened to the base frame 323, and a filter screen 325 is held between the top frame 324 and the base frame 323. This structural design ensures the stable installation of the filter screen 325 while facilitating disassembly and cleaning.

[0047] The top of the collection hopper 300 is connected to a crushing box 500, which contains a tiered crushing mechanism. This tiered design allows the raw material to be gradually refined during the crushing process, improving the crushing effect. The top of the crushing box 500 is connected to a raw material hopper 400, which is made of transparent material, allowing users to easily observe the remaining amount of raw material inside. The top of the raw material hopper 400 is equipped with a top cover 410, which prevents the raw material from spilling during feeding and also acts as a seal to prevent external impurities from entering.

[0048] In this embodiment, combined with Figure 3 and Figure 4 As shown, the crushing mechanism includes crushing blades 510 and grinding rollers 520 distributed vertically, both of which are double-roller structures.

[0049] The crusher 510 has several serrated blade structures distributed along its main shaft axis, with the serrated blade structures on adjacent crushers 510 being staggered and twisted. This staggered twisting design allows the crusher 510 to cut the raw material from all directions and multiple angles during rotation, improving crushing efficiency and quality.

[0050] like Figure 5 As shown, the grinding roller 520 includes a rotating shaft 521, on which a plurality of grinding flanges 522 are provided at intervals along the axial direction, and radially recessed material passage grooves 523 are formed between adjacent grinding flanges 522. The surface of the grinding flanges 522 is provided with anti-slip texture. This design increases the friction between the grinding roller 520 and the raw material, so that the raw material can be better squeezed and refined during the grinding process, further improving the crushing effect.

[0051] Furthermore, combined Figure 4 As shown, one axial end of the grinding roller 520 extends to the outside of the transmission box 110 (the rear side in the figure), combined with Figure 7As shown, the grinding roller 520 has an inner material cavity 524 for storing powder or granular auxiliary materials. The inner wall of the material passage 523 has several discharge holes 525 that communicate with the inner material cavity 524. The discharge holes 525 penetrate the grinding roller 520 radially, so that the auxiliary materials originally located in the inner material cavity 524 can pass through the holes and be discharged to the outside of the grinding roller 520. The inner material cavity 524 forms an opening structure at the outer end of the grinding roller 520 located in the transmission box 110, and a material cavity cover 526 is provided at the opening. The material cavity cover 526 is made of rubber material and has the flexibility shown in the figure, so that it can be fitted onto the outer end of the grinding roller 520. During the rotation of the grinding roller 520, the discharge holes 525 in different positions will rotate to the bottom in an orderly manner, forming a series of material drop channels. The auxiliary materials (such as miso powder, protein powder, mineral powder, etc.) located in the inner material cavity 524 will be discharged to the outside of the bottom of the grinding roller 520 under the action of gravity and rotational centripetal force, and mixed with the processed material. It should be noted that if such powdered or granular auxiliary materials are added to the raw material tank 400 from the top in advance, sedimentation and stratification are likely to occur, that is, the raw materials with smaller particle size will preferentially sink and pass through the crushing mechanism, resulting in uneven mixing after processing.

[0052] In other embodiments, such as Figure 8 As shown, the inner material cavity 524 is also equipped with several tamping balls 527. The outer surface of each tamping ball 527 is evenly distributed with several pointed flanges. The tamping balls 527 are made of stainless steel and have a certain weight. During the rotation of the grinding roller, the tamping balls 527 continuously roll within the inner material cavity 524, squeezing and tamping the auxiliary material. Their pointed flanges enhance the tamping effect and prevent the auxiliary material from accumulating and clogging the discharge hole 525. It should be noted that the content of auxiliary material in the inner material cavity 524 is determined according to actual operational needs and the structural design, such as the size and number of discharge holes, thereby improving discharge stability.

[0053] The power module 200 includes a foot-operated drive wheel 220. The transmission input end of the crushing mechanism extends into the transmission box 110 and is connected to the foot-operated drive wheel 220 via a transmission wheel 530 and a transmission chain 210, forming a drive structure that allows consumers to participate directly. This design breaks away from the traditional motor-driven mode, allowing consumers to directly participate in the pet food crushing process through their own pedaling action, enhancing their sense of participation and experience. It should be noted that the transmission box 110 is equipped with a gear set structure or pulley structure with an appropriate transmission ratio, enabling consumers to drive the crushing mechanism to operate normally in a more effortless mode.

[0054] The power module 200 also includes a frame with pedals, a seat, and handlebars, and a base at the bottom for ground support. This bicycle-like design makes operation more comfortable and convenient, conforming to ergonomic principles. In other embodiments, an auxiliary motor can be added within the transmission box 110 for power assistance. A tension frame 230 is provided between the frame and the transmission box 110. The tension frame 230 consists of two adjustable rod sections forming a telescopic frame, used to support and stabilize the connection and spacing between the frame and the transmission box 110, ensuring that the tension of the drive chain 210 remains stable and reliable, preventing it from easily coming loose.

[0055] When assembling the crushing device for pet food production, first, fix the transmission box 110 in a suitable position to ensure its stability. Then, install the collection bin 300, crushing box 500, and raw material bin 400 in sequence, ensuring smooth communication between each component. Install the crushing blade 510 and grinding roller 520 in the crushing mechanism into the crushing box 500, and adjust the distance between the two rollers to ensure crushing effect. Next, install the collection drawer 320, correctly install the filter screen 325 between the top frame 324 and the base frame 323, and install the collection drawer 320 into the collection bin 300 via a pull-out slide rail. Finally, assemble the power module 200, connect the foot-operated drive wheel 220 to the transmission input end of the crushing mechanism via the transmission chain 210, and install the frame, foot pedals, seat, and handles, ensuring the integrity and stability of the entire device.

[0056] Example 2: Based on Example 1, this example discloses a crushing method for pet food production, using the aforementioned crushing device for pet food production, including the following steps:

[0057] S1. Feeding: First, open the top cover 410, pour the raw material to be crushed into the raw material bucket 400, seal the top cover 410, add powder or granular auxiliary material into the inner material chamber 524, and close the material chamber cover 526. This step ensures that the raw material can enter the crushing device accurately and safely, preparing for subsequent crushing processing.

[0058] Before using the device, first check that all parts are installed correctly and securely connected. Open the top cover 410 of the raw material tank 400, prepare the pet food raw materials to be crushed, and ensure that the raw materials are dry and free of impurities.

[0059] S2. Autonomous Driven Crushing: Users drive the foot-operated drive wheel 220 by stepping on it, which in turn drives the core structure of the crushing mechanism to rotate, performing layered crushing of the raw materials. Consumers can intuitively feel their own force being converted into crushing power during the stepping process, personally experiencing the pet food production process, which enhances their sense of identification with the product.

[0060] The consumer sits on the frame of the power module 200, with both feet on the pedals and hands gripping the handlebars to maintain balance. Rhythmic pedaling drives the foot-operated drive wheel 220, which transmits power via the transmission chain 210 to the input of the crushing mechanism, causing the crushing blade 510 and the grinding roller 520 to rotate. Under gravity, the raw material enters the crushing chamber 500 from the raw material bin 400. It is first cut and crushed by the crushing blade 510, and the pre-refined material continues to fall into the grinding roller 520 area, where it is further compressed and refined.

[0061] S3. Crushed Material Screening: The crushed material obtained after crushing falls onto the collection drawer 320 below, where it is processed into coarse and fine particles. Passing through filter screens 325 of different mesh sizes, the crushed material is collected in stages, meeting the different pets' requirements for feed particle size and improving the product's applicability.

[0062] The crushed material falls onto the lower collection drawer 320. Based on the difference in mesh size of the filter screens 325 between the different collection drawers 320, the material is graded and screened. Smaller particles pass through the upper filter screen 325 into the lower collection drawer 320, while larger particles remain in the upper collection drawer 320. After the crushing process is complete, the opening door 310 on the side wall of the collection hopper 300 is opened, and the collection drawers 320 are pulled out sequentially to the outside of the collection hopper 300 to collect and package the crushed material of different particle sizes.

[0063] After use, clean and maintain the device. Remove any residual material from the raw material bin 400, crushing box 500, and collection bin 300 to prevent material accumulation from affecting future use. Inspect the wear of the crushing blades 510 and grinding rollers 520; replace them promptly if severe wear is observed. Lubricate and maintain the transmission components, such as the drive chain 210, to ensure the normal operation of the device.

[0064] Taking a pet food experience store as an example, the store introduced the pet food production crushing device of this invention to conduct consumer experience activities. Under the guidance of store staff, consumers personally participated in the pet food crushing and production process. Starting with adding ingredients, consumers followed the operating procedures to pour the raw materials into the raw material bucket 400, then sat on the power module 200 and drove the crushing mechanism by stepping on a pedal. During the crushing process, consumers could feel their own strength being converted into crushing power and witnessed the raw materials gradually being crushed into feed of different particle sizes. After crushing, consumers pulled out the collection drawer 320 to collect the pet food they had made themselves. This unique experience attracted many consumers, not only increasing their trust in the quality of the pet food but also increasing their goodwill and loyalty to the store. At the same time, the store achieved increased sales and good economic and social benefits by selling the pet food and related products made by consumers.

[0065] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A crushing device for pet food production, characterized in that, The device includes a crushing module (100) and a power module (200). The crushing module (100) includes a transmission box (110). A collection bin (300) is provided on one side of the transmission box (110). An opening and closing door (310) is provided on the side wall of the collection bin (300). The collection bin (300) is located inside the opening and closing door (310) and has a collection drawer (320) with screening function. A crushing box (500) is connected to the top of the collection bin (300). A tiered crushing mechanism is provided inside the crushing box (500). A raw material bin (400) is connected to the top of the crushing box (500). A top cover (410) is provided on the top of the raw material bin (400). The power module (200) includes a foot-operated drive wheel (220), the transmission input end of the crushing mechanism extends into the transmission box (110), and is connected to the foot-operated drive wheel (220) through a transmission chain (210), forming a drive structure that consumers can personally participate in; The crushing mechanism includes crushing blades (510) and grinding rollers (520) distributed vertically. Both the crushing blades (510) and the grinding rollers (520) are double roller structures. The crushing blades (510) have a number of serrated blade structures distributed along their main shaft axis. The serrated blade structures on adjacent crushing blades (510) are staggered and twisted together. The grinding rollers (520) include a rotating shaft (521). The rotating shaft (521) is provided with a number of grinding flanges (522) distributed axially at intervals. A radially recessed material passage groove (523) is formed between adjacent grinding flanges (522). The grinding roller (520) extends axially to the outside of the transmission box (110) at one end. The grinding roller (520) has an inner material cavity (524) inside. The inner wall of the material passage (523) has several discharge holes (525) that communicate with the inner material cavity (524). The inner material cavity (524) forms an opening structure at the end of the grinding roller (520) located outside the transmission box (110), and a material cavity cover (526) is provided at the opening.

2. The crushing device for pet food production according to claim 1, characterized in that, The power module (200) also includes a frame, a foot pedal, a seat and handlebars on the frame, a base for supporting the ground at the bottom of the frame, and a tension frame (230) between the frame and the transmission box (110).

3. The crushing device for pet food production according to claim 1, characterized in that, Several collection drawers (320) are arranged longitudinally at intervals, and filter screens (325) with gradually increasing mesh size are provided between adjacent collection drawers (320) from top to bottom.

4. A crushing device for pet food production according to claim 1 or 3, characterized in that, The inner walls of the collection drawer (320) and the collection bucket (300) are equipped with pull-out slide rails, and the collection drawer (320) can be pulled out to the outside of the collection bucket (300) through the opening at the opening door (310).

5. A crushing device for pet food production according to claim 4, characterized in that, The collection drawer (320) includes a rectangular enclosure (321). The bottom of the inner wall of the enclosure (321) is provided with a boss, and a washer (322) is provided on the boss. The top of the washer (322) abuts against the base frame (323). A top frame (324) is fastened on the base frame (323). A filter screen (325) is held between the top frame (324) and the base frame (323).

6. The crushing device for pet food production according to claim 1, characterized in that, The inner material cavity (524) is filled with a number of tamping balls (527), and the outer surface of the tamping balls (527) is evenly distributed with pointed flanges.

7. A crushing device for pet food production according to claim 6, characterized in that, The surface of the grinding flange (522) is provided with anti-slip texture.

8. A crushing method for pet food production, characterized in that, The pet food production crushing apparatus according to any one of claims 1-7 includes the following steps: S1, Adding ingredients; First, open the top cover (410), pour the raw material to be crushed into the raw material bucket (400), seal the top cover (410), add powder or granular auxiliary material into the inner material chamber (524), and cover the material chamber cover (526). S2, Autonomous-driven crushing; The user drives the foot-operated drive wheel (220) to rotate by stepping on it, which in turn drives the core structure of the crushing mechanism to rotate, and performs tiered crushing of the raw materials. S3, Crushed material screening; The crushed material obtained after crushing falls onto the collection drawer (320) below, and the collection drawer (320) is used to achieve coarse and fine material processing.

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