Stirring device for making cat litter
By designing a cat litter mixing device that includes a mixing tank and a separation tank, the problem of cat litter clumping and difficulty in screening has been solved, achieving efficient mixing and separation of cat litter and ensuring the quality of the finished product.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-07
- Publication Date
- 2026-03-17
AI Technical Summary
In existing technologies, cat litter is prone to clumping when it gets damp, making it difficult to sift effectively and affecting the quality of the finished product.
Design a stirring device including a mixing tank and a separation box. The cat litter raw material is stirred by the stirring rod in the mixing tank, and the moving fork plate and lifting cylinder in the separation box work together with the filter holes to separate the agglomerated material. The lifting cylinder drives the moving fork plate to rise and fall and the pushing cylinder drives the separation box to move laterally, so as to realize the separation and discharge of the agglomerated material.
It effectively separates clumped materials, ensuring the quality of the finished cat litter, preventing clumping from affecting the screening effect, and ensuring the effectiveness and hygiene of the cat litter.
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Figure CN223995875U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cat litter mixing technology, specifically a mixing device for making cat litter. Background Technology
[0002] Cat litter is used by cat owners to bury feces and urine in their cats. It has good absorbency and is usually used in conjunction with a litter box. An appropriate amount of cat litter is poured into the litter box, and a trained cat will walk into the litter box when it needs to relieve itself, leaving its feces on top, making it easy to clean.
[0003] Cat litter is mostly granular, and commonly used types include soil litter, paper litter, crystal litter, tofu litter, wood litter, and wheat litter. The raw materials need to be mixed, and depending on the specific type, additives and other materials may be added.
[0004] Reference CN202420056301.5 A cat litter mixing device, by rotating a cam, causes the cam to drive the connecting rod and the filter plate to move up and down, so as to realize the filter plate to screen the cat litter, solve the problem that the cat litter is prone to clumping due to moisture, and thus improve the quality of screened cat litter.
[0005] First, depending on the material of the cat litter, it may not form a rollable shape after clumping when it gets damp. Second, some of it may become sticky, causing it to be difficult to roll and sift due to adsorption.
[0006] To address this issue, we provide a mixing device for making cat litter. Utility Model Content
[0007] The purpose of this invention is to overcome the shortcomings of the prior art and provide a stirring device for making cat litter, so as to solve the technical problem that cat litter is difficult to sieve after clumping in the prior art.
[0008] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a mixing device for making cat litter, including a mixing vessel, an upper mounting cavity and a lower mounting cavity are provided in the mixing vessel, the upper mounting cavity is suitable for mixing cat litter raw materials; a feed inlet is provided on the upper mounting cavity, and a mixing motor is installed thereon, the output end of the mixing motor is connected to a mixing rod and mixes in the upper mounting cavity;
[0009] A separation box is installed in the lower installation cavity, and a movable fork plate is installed in the separation box. The movable fork plate has filter holes. A lifting cylinder is installed at the bottom of the movable fork plate. The lifting cylinder is adapted to drive the movable fork plate to lift. Multiple sets of edge rods are provided on the movable fork plate.
[0010] The mixing vessel on the separation box has a material distribution port, and the bottom of the separation box has a discharge port.
[0011] In a further technical solution, the stirring rod includes a stirring shaft and a stirring side plate, the output end of the stirring motor is connected to the stirring shaft through a coupling, and the stirring motor is located at the top of the stirring vessel;
[0012] A scraper is provided on the side of the stirring side plate opposite to the stirring shaft, and the scraper is attached to the inner wall of the stirring vessel.
[0013] In a further technical solution, a material inlet is provided at the bottom of the upper mounting cavity, and a discharge pipe is provided at the material inlet and a discharge electric valve is installed thereon. The discharge electric valve controls the discharge of the agitated cat litter material in the discharge pipe.
[0014] In a further technical solution, the top of the separation box is open, and the mixed cat litter raw material discharged from the discharge pipe is collected.
[0015] A bottom plate is installed at the bottom of the discharge port, and a lifting cylinder is installed at the bottom of the bottom plate. The output end of the lifting cylinder is upward and a lifting rod is installed through a coupling. The top of the lifting rod is connected to the moving fork plate.
[0016] In a further technical solution, the movable fork plate and the lifting rod are inclined, and the included angle is 5 to 30°;
[0017] Multiple sets of side bars surround the side of the moving fork plate, and a gap is reserved relative to the material distribution port;
[0018] The movable fork plate is a circular plate, the discharge port is a circular opening, and the diameter of the movable fork plate is larger than the diameter of the discharge port.
[0019] In a further technical solution, a pushing cylinder is installed on one side of the stirring vessel, and the output end of the pushing cylinder extends into the stirring vessel and is fitted with a fixing plate, which is detachably connected to one side of the separation box.
[0020] A carrying chamber is provided inside the mixing vessel, and the carrying chamber is located at the bottom of the dispensing port; a carrying plate is installed inside the carrying chamber, the carrying plate is placed vertically, and the carrying plate is connected to the separation box; the height of the separation box in the mixing vessel is not higher than the top height of the carrying chamber;
[0021] A bearing spring is provided on the side of the bearing plate opposite to the pushing cylinder. One end of the bearing spring is fixedly connected to the bearing plate, and the other end is fixedly connected to the inner wall of the bearing cavity.
[0022] In a further technical solution, a sliding plate is installed on the movable fork plate, a position plate is provided on the side of the sliding plate facing the dispensing port, a guide rod is provided on the position plate, a guide hole is provided in the movable fork plate, and the guide rod is adapted to the guide hole.
[0023] A pull plate is provided on the side of the sliding plate away from the position plate; the pull plate and the position plate are located on the upper and lower sides of the sliding plate.
[0024] In a further technical solution, a reset spring and a fixing block are installed inside the guide hole, and the fixing block is fixedly connected to the guide rod; one end of the reset spring is connected to the fixing block, and the other end is fixedly connected to the inner wall of the guide hole.
[0025] In a further technical solution, an adjustment frame is installed on the outer wall of the mixing vessel outside the bearing cavity. A pull-down cylinder and an adjustment plate are installed inside the adjustment frame. The output end of the pull-down cylinder faces upward and is fixedly connected to the adjustment plate. A threaded rod is provided on the adjustment plate, and an adjustment block is threadedly connected to the threaded rod. A connecting ring is provided on the position plate, and a connecting rope is installed between the connecting ring and the adjustment block. A rolling element is installed inside the mixing vessel below the connecting rope, and the connecting rope is adapted to turn and fit against the rolling element.
[0026] Compared with existing technologies, it has the following beneficial effects:
[0027] This application uses an upper mounting chamber to stir the raw materials of the mixed cat litter, ensuring the mixing effect. Then, a separation chamber in the lower mounting chamber separates the stirred cat litter, specifically screening out clumped materials to avoid affecting the quality of the finished product. Specifically, the extension and retraction of a lifting cylinder drives a moving fork plate to pass over larger clumps of material from the bottom. Filter holes are provided on the moving fork plate, allowing regular cat litter material to pass through to the bottom of the separation chamber and then through the discharge port to the bottom collection box. The lifting cylinder is periodically raised to discharge clumped material from a side discharge port.
[0028] When discharging cat litter from the separation box, the cylinder can be pushed to drive the fixed plate to reciprocate and move the separation box laterally in the lower mounting cavity. The other side is supported by the bearing plate and bearing spring to ensure the reciprocating effect, which acts as a vibrating screen to ensure that non-clumped cat litter on the moving fork plate is moved to the separation box and discharged from the discharge port. Attached Figure Description
[0029] Figure 1 This is a front sectional view of the mixing device for making cat litter according to this utility model;
[0030] Figure 2 This is a front view of the mixing device for making cat litter according to this utility model.
[0031] Figure 3 This is a structural diagram of the bottom plate of Embodiment 1 of this utility model;
[0032] Figure 4 This is a top view of the movable fork plate of Embodiment 1 of this utility model;
[0033] Figure 5This is a structural diagram of the movable fork plate of Embodiment 1 of this utility model;
[0034] Figure 6 This is a schematic diagram of the separation box of this utility model. Figure 1 ;
[0035] Figure 7 This is a schematic diagram of the separation box of this utility model. Figure 2 ;
[0036] Figure 8 This is a front sectional view of the stirring device according to Embodiment 2 of this utility model;
[0037] Figure 9 for Figure 8 Enlarged view of part A;
[0038] Figure 10 This is a front sectional view of the stirring device of Embodiment 3 of this utility model;
[0039] Figure 11 for Figure 10 Enlarged view of part B;
[0040] Figure 12 for Figure 10 Enlarged view of part C;
[0041] Figure 13 for Figure 10 Enlarged view of part D;
[0042] Figure 14 This is a connection structure diagram of the movable fork plate and the sliding plate in Example 3;
[0043] In the picture:
[0044] 1. Mixing vessel; 11. Upper mounting cavity; 12. Lower mounting cavity; 13. Distributor port; 14. Discharge port; 15. Discharge electric valve; 16. Discharge pipe; 17. Bottom plate; 18. Lifting rod; 19. Bearing cavity; 110. Bearing plate; 111. Bearing spring; 112. Rolling element;
[0045] 2. Agitator motor;
[0046] 3. Stirring rod; 31. Stirring shaft; 32. Stirring side plate; 33. Scraper strip;
[0047] 4. Separation box; 41. Moving fork plate; 42. Edge rod; 43. Sliding plate; 44. Positioning plate; 45. Guide rod; 46. Pull plate; 47. Return spring; 48. Fixing block; 49. Connecting ring;
[0048] 5. Lifting cylinder; 6. Pushing cylinder; 7. Fixing plate; 8. Adjusting frame; 81. Pull-down cylinder; 82. Adjusting plate; 83. Threaded rod; 84. Adjusting block; 9. Connecting rope. Detailed Implementation
[0049] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0050] Mainstream cat litter can be divided into the following categories:
[0051] Mineral cat litter: Bentonite cat litter and mineral cat litter;
[0052] Bentonite cat litter: Made from powdered or bonded bentonite, it is inexpensive and has regularly round granules. Its advantages are affordability, good clumping properties, and resistance to crumbling, making it comfortable for cats' paws; its disadvantages are its weight, dust production, potential respiratory problems for cats, tendency to stick to paws and be ingested, and inability to be flushed down the toilet.
[0053] Mineral cat litter: Made by grinding raw minerals into fine granules, it is more expensive and has irregular granule shapes, but produces very little dust. Its advantages are good clumping ability, resistance to breakage, and a comfortable feel for the cat's paws; its disadvantages are that the granules are small, easily carrying litter out, and cannot be flushed down the toilet.
[0054] Plant-based cat litter: The main raw materials are soybean residue and corn cobs, etc. Its advantages are that it is lightweight, clumps well, is safe and environmentally friendly, and can be flushed directly into the toilet; its disadvantages are that it is prone to moisture, mold, and bacterial growth, produces a small amount of dust, and may stick to the bottom of the toilet.
[0055] Mixed cat litter: This is made by mixing bentonite and tofu litter, among other plant-based cat litters. Its advantages are that it combines the benefits of both tofu litter and bentonite, resulting in good clumping and binding properties. Its disadvantages are that the granules are small, making it easy for litter to be carried out, and it cannot be flushed down the toilet.
[0056] Generally, a granule size of 2-4 millimeters in diameter is ideal for cat litter. Additives are often added during the manufacturing process to ensure the litter's antiseptic, deodorizing, and absorbent properties. Clumping refers to the litter's ability to quickly and tightly clump together after absorbing cat urine or feces; however, moisture can also cause localized clumping, especially with mixing devices.
[0057] Example 1
[0058] Please see Figure 1-7This utility model provides a technical solution: a mixing device for making cat litter, including a mixing vessel 1, an upper mounting cavity 11 and a lower mounting cavity 12 are provided in the mixing vessel 1, the upper mounting cavity 11 is suitable for mixing cat litter raw materials; a feed inlet is provided on the upper mounting cavity 11, and a mixing motor 2 is installed on the top, the output end of the mixing motor 2 is connected to a mixing rod 3 and mixes in the upper mounting cavity 11;
[0059] A separation box 4 is installed in the lower mounting cavity 12, and a movable fork plate 41 is installed in the separation box 4. A lifting cylinder 5 is installed at the bottom of the movable fork plate 41, and the lifting cylinder 5 is adapted to output to drive the movable fork plate 41 to lift. Multiple sets of edge rods 42 are provided on the movable fork plate 41.
[0060] The mixing vessel 1 of the separation box 4 has a dispensing port 13, and a discharge port 14 is provided at the bottom of the separation box 4. A collection box is installed at the bottom of the lifting cylinder for collecting cat litter. This application uses the upper mounting cavity to stir the raw materials of the mixed cat litter to ensure the mixing effect. Then, the separation box in the lower mounting cavity separates the stirred cat litter, specifically screening out clumps to avoid affecting the quality of the finished product. The extension and retraction of the lifting cylinder drives the moving fork plate to pass over the larger clumps from the bottom. The moving fork plate has filter holes to allow regular cat litter to enter the bottom of the separation box and pass through the discharge port to the collection box at the bottom. The lifting cylinder is set to rise at regular intervals and discharge the clumps from the side dispensing port.
[0061] The stirring rod 3 includes a stirring shaft 31 and a stirring side plate 32. The output end of the stirring motor 2 is connected to the stirring shaft 31 via a coupling. The stirring motor 2 is located at the top of the stirring vessel 1. A wall scraper 33 is provided on the side of the stirring side plate 32 facing away from the stirring shaft 31, and the wall scraper 33 is in contact with the inner wall of the stirring vessel 1. Figure 1 As shown, a bottom scraper is also installed at the bottom of the bottom plate of the stirring shaft for cleaning. Figure 1 The bottom of the inverted cone shown is cleaned of its inner wall. A scraper is used to prevent sticky materials from adhering to the inner wall of the mixing vessel, which could lead to uneven mixing. Sticky materials, such as pine cat litter or tofu cat litter, often have adhesives added during manufacturing for shaping.
[0062] The bottom of the upper mounting cavity 11 is provided with a material transfer port, and a discharge pipe 16 is provided at the material transfer port and a discharge electric valve 15 is installed thereon. The discharge electric valve 15 controls the discharge of the stirred cat litter raw material in the discharge pipe 16. The discharge electric valve controls the amount of material discharged from the upper mounting cavity to the lower mounting cavity, so as to avoid large quantities entering the separation box and failing to achieve the separation effect.
[0063] The top of the separation box 4 is open and collects the mixed cat litter raw material discharged from the discharge pipe 16; a bottom plate 17 is installed at the bottom of the discharge port 14, and a lifting cylinder 5 is installed at the bottom of the bottom plate 17. The output end of the lifting cylinder 5 is upward and a lifting rod 18 is installed through a coupling. The top of the lifting rod 18 is connected to the moving fork plate 41.
[0064] Multiple sets of side bars 42 surround the side of the movable fork plate 41, and a gap is reserved relative to the material distribution port 13;
[0065] The movable fork plate 41 is a circular plate, the discharge port 14 is a circular opening, and the diameter of the movable fork plate 41 is larger than the diameter of the discharge port 14.
[0066] Example 2
[0067] like Figure 8 and 9 As shown, another embodiment of this utility model is presented. Based on embodiment 1, the movable fork plate 41 and the lifting rod 18 are inclined, with an included angle of 5 to 30°. This embodiment, for example... Figure 8 As shown, the angle is 8°. A pushing cylinder 6 is installed on one side of the stirring vessel 1. The output end of the pushing cylinder 6 extends into the stirring vessel 1 and is fitted with a fixing plate 7. The fixing plate 7 is detachably connected to one side of the separation box 4.
[0068] A bearing cavity 19 is provided inside the mixing vessel 1, and the bearing cavity 19 is located at the bottom of the dispensing port 13; a bearing plate 110 is installed inside the bearing cavity 19, the bearing plate 110 is placed vertically, and the bearing plate 110 is connected to the separation box 4; the height of the separation box 4 in the mixing vessel 1 is not higher than the top height of the bearing cavity 19.
[0069] A bearing spring 111 is provided on the side of the bearing plate 110 opposite to the push cylinder 6. Three sets of bearing springs 111 are evenly arranged. One end of the bearing spring 111 is fixedly connected to the bearing plate 110, and the other end is fixedly connected to the inner wall of the bearing cavity 19. When discharging cat litter from the separation box, the push cylinder can drive the fixed plate to reciprocate, causing the separation box to move laterally in the lower mounting cavity. The other side is supported by the bearing plate and bearing spring to ensure the reciprocating effect.
[0070] Example 3
[0071] like Figure 10-14 As shown, another embodiment of this utility model is proposed. Based on embodiment 2, the shape of the movable fork plate is modified, and a sliding plate 43 is installed on the movable fork plate 41. A position plate 44 is provided on the side of the sliding plate 43 facing the dispensing port 13. A guide rod 45 is provided on the position plate 44. A guide hole is provided in the movable fork plate 41, and the guide rod 45 is adapted to the guide hole. A filter plate is provided on the sliding plate, and the pore size of the filter plate does not affect the passage of cat litter particles.
[0072] A pull plate 46 is provided on the side of the sliding plate 43 away from the position plate 44; the pull plate 46 and the position plate 44 are located on the upper and lower sides of the sliding plate 43.
[0073] Combination Figure 10 and 11 As shown, a reset spring 47 and a fixing block 48 are installed in the guide hole. The fixing block 48 is fixedly connected to the guide rod 45. One end of the reset spring 47 is connected to the fixing block 48, and the other end is fixedly connected to the inner wall of the guide hole.
[0074] An adjusting frame 8 is installed on the outer wall of the mixing vessel 1 located outside the bearing cavity 19. A pull-down cylinder 81 and an adjusting plate 82 are installed inside the adjusting frame 8. The output end of the pull-down cylinder 81 faces upward and is fixedly connected to the adjusting plate 82. A threaded rod 83 is provided on the adjusting plate 82, and an adjusting block 84 is threadedly connected to the threaded rod 83. A connecting ring 49 is provided on the position plate 44, and a connecting rope 9 is installed between the connecting ring 49 and the adjusting block 84. A rolling element 112 is installed inside the mixing vessel 1 below the connecting rope 9, and the connecting rope 9 is adapted to turn and fit against the rolling element 112.
[0075] In this embodiment, when the moving fork plate moves to the level of the feeding port, the output end of the pull-down cylinder moves down, causing the adjusting plate to move down. The adjusting block on the threaded rod fixedly installed on the adjusting plate drives the connecting rope to move down. The end of the connecting rope away from the adjusting block is connected to the connecting ring, causing the sliding plate to move relative to the moving fork plate. The guide rod at the bottom moves along the guide hole, which is a pneumatic guide. The inclined moving fork plate is conducive to the discharge of some clumps and larger particles that cannot pass through the moving fork plate.
[0076] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.
Claims
1. A stirring device for making cat litter, characterized by, Including stirring kettle (1), be provided with upper installation cavity (11) and lower installation cavity (12) in stirring kettle (1), the upper installation cavity (11) is suitable for stirring cat litter raw materials;Feeding port is provided on the upper installation cavity (11), and is installed with stirring motor (2), the output end of stirring motor (2) is connected with stirring rod piece (3) and is stirred in the upper installation cavity (11); Separating box (4) is installed in the lower installation cavity (12), and movable fork plate (41) is installed in separating box (4), and filter hole is formed in movable fork plate (41), the bottom of movable fork plate (41) is installed with lifting cylinder (5), and lifting cylinder (5) is suitable for output and drives movable fork plate (41) to lift;Movable fork plate (41) is provided with multiple groups of along edge pole (42); The stirring kettle (1) on the separating box (4) is provided with a distribution port (13), and a discharge port (14) is provided at the bottom of the separating box (4).
2. The mixing device for manufacturing cat litter according to claim 1, wherein The stirring rod piece (3) includes a stirring shaft (31) and a stirring side plate (32), and the output end of the stirring motor (2) is connected with the stirring shaft (31) through a mounting coupler, and the stirring motor (2) is located at the top of the stirring kettle (1). The side of the stirring side plate (32) opposite to the stirring shaft (31) is provided with a wall scraping strip (33) which is attached to the inner wall of the stirring kettle (1).
3. The mixing device for manufacturing cat litter according to claim 2, wherein The bottom of the upper installation cavity (11) is provided with a material conveying port, and a discharging pipeline (16) is provided at the material conveying port and a discharging electric valve (15) is installed, and the discharging electric valve (15) controls the discharge of the stirred cat litter raw materials in the discharging pipeline (16).
4. The cat litter making mixing device of claim 3, wherein, The top of the separating box (4) is provided with an opening, and the stirred cat litter raw materials discharged from the discharging pipeline (16) are collected; The bottom of the discharge port (14) is installed with a bottom plate (17), and the bottom plate (17) is installed with a lifting cylinder (5), and the output end of the lifting cylinder (5) is upwardly connected with a jacking rod (18) through a coupler, and the top of the jacking rod (18) is connected with the movable fork plate (41).
5. The apparatus of claim 4, wherein the apparatus is configured to mix the cat litter. The movable fork plate (41) and the jacking rod (18) are inclinedly arranged, and the included angle is 5-30°. Multiple groups of along edge poles (42) are circumferentially arranged on the side of the movable fork plate (41), and a gap is reserved relative to the distribution port (13). The movable fork plate (41) is a circular plate, the discharge port (14) is a circular port, and the diameter of the movable fork plate (41) is greater than the diameter of the discharge port (14).
6. The cat litter making mixing device of claim 4, wherein, One side of the stirring kettle (1) is installed with a pushing cylinder (6), the output end of the pushing cylinder (6) extends into the stirring kettle (1) and is installed with a fixing plate (7), and the fixing plate (7) is detachably connected to one side of the separating box (4). A bearing cavity (19) is provided in the stirring kettle (1), and the bearing cavity (19) is located at the bottom of the distribution port (13). A bearing plate (110) is installed in the bearing cavity (19), and the bearing plate (110) is vertically placed, and the bearing plate (110) is connected with the separating box (4); the height of the separating box (4) in the stirring kettle (1) is not higher than the top height of the bearing cavity (19). The side of the bearing plate (110) facing away from the pushing air cylinder (6) is provided with a bearing spring (111), one end of the bearing spring (111) is fixedly connected with the bearing plate (110), and the other end is fixedly connected with the inner wall of the bearing cavity (19).
7. The apparatus of claim 6, wherein the apparatus is configured to produce cat litter. The moving fork plate (41) is provided with a sliding plate (43), the side of the sliding plate (43) facing the distribution port (13) is provided with a position plate (44), the position plate (44) is provided with a guide rod (45), the moving fork plate (41) is provided with a guide hole, and the guide rod (45) is matched with the guide hole. The side of the sliding plate (43) away from the position plate (44) is provided with a pull plate (46); the pull plate (46) and the position plate (44) are located on the upper and lower sides of the sliding plate (43).
8. The apparatus of claim 7, wherein the apparatus is configured to produce cat litter. The guide hole is provided with a reset spring (47) and a fixed block (48), the fixed block (48) is fixedly connected with the guide rod (45); one end of the reset spring (47) is connected with the fixed block (48), and the other end is fixedly connected with the inner wall of the guide hole.
9. The cat litter making mixing device of claim 7, wherein, The outer wall of the stirring kettle (1) outside the bearing cavity (19) is provided with an adjusting frame (8), the adjusting frame (8) is provided with a downward pulling air cylinder (81) and an adjusting plate (82), the output end of the downward pulling air cylinder (81) is upwardly fixedly connected with the adjusting plate (82); The adjusting plate (82) is provided with a threaded rod (83), the threaded rod (83) is threadedly connected with an adjusting block (84), the position plate (44) is provided with a connecting ring (49), the connecting ring (49) and the adjusting block (84) are provided with a connecting rope (9); the stirring kettle (1) below the connecting rope (9) is provided with a rolling body (112), and the connecting rope (9) is adapted to be reversely attached to the rolling body (112).
Citation Information
Patent Citations
Cat litter stirring device
CN221492132U