Method for centrifugal separation and recycling of cat litter and feces and cat litter device

Abstract

The present application relates to pet product technical field, more specifically, it relates to a kind of cat litter and feces centrifugal separation recycling method and cat litter device, lifting motor drives lifting mechanism to drive support tray to rise to separation position, cat litter and feces on support tray are centrifuged under the action of rotation, clean cat litter is filtered into temporary storage chamber, and feces remains on support tray;After separation is completed, lifting motor drives lifting mechanism to drive support tray to rise to collection position, and feces on support tray is moved to feces collection chamber under the action of rotation and is collected, finally, lifting motor drives lifting mechanism to drive support tray to drop to initial position, while sand return mechanism can be returned to sand storage chamber in temporary storage chamber Clean cat litter is recycled by the linkage of lifting mechanism.The present application utilizes centrifugal force, combines filtering effect, can effectively separate cat litter and feces, and clean cat litter can be recycled, and waste of cat litter is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of pet products, and more particularly to a method for centrifugally separating and recycling cat litter and feces, and a cat litter device. Background Art

[0002] With the development of society, keeping pets has become a "trend", and more and more people are keeping pet cats. However, the problem of cleaning pet cat feces during the breeding process is obvious. Usually cat owners do not have so much time to clean the litter box frequently, so cleaning the litter box has become a problem.

[0003] The cat litter box is equivalent to the cat's "toilet". The main function of the cat litter box is to separate cat litter from feces. Cat litter can be used to bury feces and urine. It has good water absorption to prevent urine and feces from sticking to the cat litter box. At the same time, it can well cover the odor of feces and urine.

[0004] There are many styles of cat litter boxes on the market today, mainly divided into open, semi-enclosed, fully enclosed, and smart types. Most types of cat litter boxes lack litter cleaning and feces separation functions, or have only simple separation functions, such as the common simple gravity separation and cleaning type. This type of box is designed with a circular cavity with sieve holes of varying sizes. The cavity rotates and tumbles, and cat litter and feces fall to the low point of the cavity due to gravity, and are filtered through the sieve holes to achieve the purpose of separating the litter and feces.

[0005] However, this type of cat litter box still has the following defects: cat litter and feces are difficult to be completely separated by gravity alone, resulting in difficult cleaning or incomplete cleaning; in addition, the separated clean cat litter requires human intervention to be returned to the cat litter box for reuse, and it cannot be fully automatically recycled. If the owner does not have time to handle it, it will not function normally, resulting in the entire pet box being dirty and smelly, affecting normal life. Summary of the Invention

[0006] The present invention aims to overcome the technical problems in the prior art described above, in which the separation of cat litter and feces is carried out solely by gravity, resulting in incomplete separation and incomplete cleaning, and the separated clean cat litter needs to be returned to the cat litter box for reuse by people, and cannot be fully automatically recycled. The present invention provides a method and a cat litter device for centrifugal separation and recycling of cat litter and feces, which can separate cat litter and feces by centrifugation, achieve efficient and thorough separation, and enable the clean cat litter to be automatically recycled.

[0007] To solve the above technical problems, the technical solution adopted by the present invention is: a method for centrifugal separation and recycling of cat litter and feces, which specifically comprises the following steps:

[0008] Step 1: Start the lifting motor, which drives the lifting mechanism to drive the tray holding the cat litter and feces to rise to the separation position of the sand storage chamber in the shell and then stop. Start the rotating motor, which drives the tray to rotate. The cat litter and feces to be processed on the tray undergo centrifugal motion under the action of rotation. The clean cat litter passes through the filter screen on the side wall of the sand storage chamber and enters the temporary storage chamber, while the feces remains on the tray. After separation is completed, the tray stops rotating.

[0009] Step 2: Start the lifting motor again, the lifting motor drives the lifting mechanism to drive the tray supporting the feces to rise to the collection position at the top of the storage chamber and then stop, and start the rotating motor again, the rotating motor drives the tray to rotate, and the feces on the tray moves into the guide groove under the action of rotation, and then flows into the feces collection chamber along the guide groove for collection. After the feces collection is completed, the tray stops rotating;

[0010] Step 3: Start the lifting motor in reverse, the lifting motor drives the lifting mechanism to drive the supporting tray to descend to the initial position, and at the same time the sand returning mechanism can return the clean cat litter in the temporary storage chamber to the sand storage chamber for recycling under the linkage of the lifting mechanism.

[0011] The present invention utilizes inertial force and centrifugal force, combined with filtering action, to separate cat litter from feces. During the separation process, the rotation of the rotary motor is controlled to control the high-speed rotation of the receiving tray, which generates centrifugal force through rotation. At the same time, the screening action of the filter screen separates the cat litter and feces, achieving not only good cleaning effect but also high efficiency. After the cat litter and feces are separated, the rotation of the receiving tray throws the cat feces into the diversion trough and eventually slides into the feces collection chamber. Finally, the sand return mechanism can return the clean cat litter after separation to the sand storage chamber through the filter screen for multiple recycling, thereby reducing cat litter waste.

[0012] The present invention can fully automatically clean cat litter, separate feces from cat litter, clean and collect feces, and even the cat litter can be recycled and reused in the storage room again, without the need for manual processing. It can effectively help cat owners solve the problems of tedious feces shoveling process, unpleasant odor, visual pollution, etc., and is environmentally friendly and hygienic.

[0013] Preferably, the lifting mechanism is configured as a two-stage extension structure; when the lifting motor is started, the first-stage lifting cylinder is extended, and as the first-stage lifting cylinder is extended, the lifting mechanism drives the supporting tray to the separation position. When the separation is completed, the lifting motor is started again, and then the second-stage lifting cylinder is extended, and as the second-stage lifting cylinder is extended, the lifting mechanism drives the supporting tray to the collection position.

[0014] Preferably, the litter returning mechanism can be linked with the lifting mechanism. When the lifting mechanism rises, the shielding cloth of the litter returning mechanism is in a lowered state, and the position of the shielding cloth is lower than the position of the filter. At this time, the temporary storage chamber enclosed by the shielding cloth is used to store clean cat litter; when the lifting mechanism descends, the shielding cloth of the litter returning mechanism is in an raised state, and the position of the shielding cloth is higher than the position of the filter. The clean cat litter in the temporary storage chamber flows back into the storage chamber through the filter, thereby realizing the recycling and reuse of the cat litter.

[0015] Preferably, the guide groove is arranged at an angle, and after the feces on the tray moves into the guide groove under the action of rotation through centrifugal motion, the feces is guided into the feces collection chamber along the guide groove under the action of its own gravity.

[0016] A cat litter device using the above-mentioned method for centrifugal separation and recycling of cat litter and feces comprises a lifting motor, a lifting mechanism, a receiving tray, a rotating motor, a filter screen, a guide trough, a sand returning mechanism and a shell, wherein a sand storage chamber, a temporary storage chamber and a feces collecting chamber are provided in the shell, the output shaft of the lifting motor is connected to the lifting mechanism, the receiving tray is located in the sand storage chamber and is connected to the lifting mechanism, the lifting motor can drive the receiving tray to rise and fall in the sand storage chamber via the lifting mechanism, the output shaft of the rotating motor is connected to the receiving tray and can drive the receiving tray to rotate; the sand storage chamber and the temporary storage chamber are connected via the filter screen, the guide trough is located at the top of the sand storage chamber and can guide the separated feces into the feces collecting chamber; the sand returning mechanism is connected to the lifting mechanism, and during the resetting process of the lifting mechanism, the sand returning mechanism can be linked to return the cat litter in the temporary storage chamber to the sand storage chamber through the filter screen.

[0017] Preferably, an opening is provided at the top of the shell, and a sand storage cylinder is further provided in the shell below the opening, and the sand storage cylinder and the supporting tray are surrounded to form the sand storage chamber.

[0018] Preferably, the side wall of the sand storage barrel is set as a hollow cavity, the filter screen is arranged on the inner side wall of the sand storage barrel, and the hollow cavity of the sand storage barrel is connected with the sand storage barrel through the filter screen; the sand returning mechanism includes a shielding cloth and a pull rope, the shielding cloth is arranged in the hollow cavity, and is surrounded by the hollow cavity to form the temporary storage chamber, one end of the pull rope is connected to the shielding cloth, and the other end is connected to the lifting mechanism.

[0019] Preferably, the sand returning mechanism also includes a first fixing ring and a second fixing ring, both of which are located in the temporary storage chamber, the first fixing ring is fixed on the inner wall of the hollow cavity, and the height of the first fixing ring is flush with the height of the bottom end of the filter; the second fixing ring is movably fitted on the outer wall of the hollow cavity, the shielding cloth is connected between the first fixing ring and the second fixing ring, one end of the pull rope is connected to the second fixing ring, and the other end is connected to the lifting mechanism.

[0020] Preferably, the lifting mechanism includes a secondary extension structure and a support seat; the secondary extension structure is arranged between the lifting motor and the rotating motor, the support seat is sleeved on the rotating motor, and the support seat is provided with a thrust bearing connected to the support tray; the support seat is connected to the pull rope.

[0021] Preferably, the top outer wall of the sand storage cylinder is provided with an inclined guide ring, the guide groove is provided on the guide ring, the outer shell is provided with a pull-out feces collection box, the interior of the feces collection box is a feces collection chamber; the guide ring is connected to the feces collection box.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1) The present invention utilizes inertial force and centrifugal force, combined with filtering action, to separate cat litter and feces. Specifically, during the separation process, the rotation of the rotary motor is controlled to control the high-speed forward and reverse rotation of the receiving tray, and the rotation is used to generate centrifugal force. At the same time, the cat litter and feces are separated by the screening action of the filter screen, which not only has a good cleaning effect but also has high efficiency. After the cat litter and feces are separated, the cat feces are thrown into the guide trough by the rotation of the receiving tray, and slide into the built-in feces collection box through the outlet on the guide trough, reducing the cat owner's feces shoveling work and better covering up the smell of feces. The feces collection box is inside the shell and is sealed for temporary storage, avoiding the cat's contact and soiling, and preventing the owner from frequently seeing the feces to avoid "visual pollution";

[0024] 2) The present invention provides a litter return mechanism, which allows the cat litter to be collected and recycled in the litter storage chamber for multiple uses according to the tilt angle of the shielding cloth, thus reducing litter waste. Furthermore, the litter return mechanism not only drives the second fixed ring to move by adjusting the tilt angle of the shielding cloth while the support tray is raised and lowered, thereby controlling the inflow and outflow of cat litter, but also reduces the number of motors, facilitating the control and implementation of the overall mechanical movement.

[0025] 3) The present invention can automatically clean cat litter, separate feces from cat litter, clean and collect feces, and even recycle the cat litter into the storage chamber for reuse, without the need for manual processing. This can effectively help cat owners solve the problems of cumbersome feces shoveling process, unpleasant odor, visual pollution, etc., and is environmentally friendly and hygienic.

[0026] 4) The overall shape of the cat litter device of the present invention is cylindrical, with perfect transition, compact structure, stable placement, small redundant space, and cats cannot enter, ensuring the safety of cats. At the same time, the smooth arc transition is beautiful and can prevent cats from being scratched. The material can be selected from plastic, which has a lightweight structure and low cost. At the same time, plastic can reduce cats' injuries and play a protective role. It is also easy to disassemble and clean, durable and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Schematic diagram of the process of the centrifugal separation and recycling method of cat litter and feces of the present invention;

[0028] Figure 2 2. It is a structural schematic diagram of a cat litter device (the receiving tray is located in the initial position) using a method for centrifugal separation and recycling of cat litter and feces according to the present invention;

[0029] Figure 3 This is a schematic diagram of the internal structure of a cat litter device (the tray is in the initial position) using a method for centrifugal separation and recycling of cat litter and feces according to the present invention.

[0030] Figure 4 2. It is a schematic structural diagram of a cat litter device (with a tray located at a collection position) using a method for centrifugal separation and recycling of cat litter and feces according to the present invention;

[0031] Figure 5 Schematic diagram of the internal structure of a cat litter device (with a tray located at a collection position) using a method for centrifugal separation and recycling of cat litter and feces according to the present invention;

[0032] Figure 6 It is a structural schematic diagram of the sand storage cylinder of the present invention;

[0033] Figure 7 This is a schematic structural diagram of the connection between the support base and the support tray of the present invention;

[0034] Figure 8 This is a schematic diagram of the internal structure of the connection between the support base and the support tray of the present invention;

[0035] Figure 9 It is a structural schematic diagram of the secondary extension mechanism of the present invention;

[0036] Figure 10 It is a partial structural schematic diagram of the second screw rod of the present invention;

[0037] Figure 11 It is a structural schematic diagram of the first-level lifting cylinder of the present invention.

[0038] In the accompanying drawings: 1-lifting motor; 2-lifting mechanism; 21-secondary extension mechanism; 211-first lifting cylinder; 212-secondary lifting cylinder; 213-first screw rod; 214-second screw rod; 215-fixing cylinder; 216-limiting portion; 217-groove; 22-support seat; 221-support plate portion; 222-cylinder portion; 23-first rotation limiting structure; 231-first slider; 232-first chute; 24-second rotation limiting mechanism; 241-second slider; 242-second chute; 25-thrust shaft Bearing; 3-bearing tray; 4-rotating motor; 5-filter; 6-guide trough; 61-guide ring; 62-feces collection box; 621-handle; 63-support frame; 7-sand return mechanism; 71-shielding cloth; 72-pull rope; 721-buckle; 73-first fixing ring; 74-second fixing ring; 8-housing; 81-top opening; 9-sand storage cylinder; 91-support shell; 911-slot; 92-hollow cavity; 93-through hole; 94-block; 101-sand storage chamber; 102-temporary storage chamber; 103-collection chamber. DETAILED DESCRIPTION

[0039] The drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate the embodiments, some components in the drawings may be omitted, enlarged, or reduced in size, and do not represent actual product dimensions. Those skilled in the art will understand that some well-known structures and their descriptions may be omitted from the drawings. The positional relationships depicted in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0040] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "long", "short", etc. indicating the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0041] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0042] Example 1

[0043] like Figures 1-11The present invention shows a method for centrifugally separating and recycling cat litter and feces and a cat litter device according to embodiment 1. The method for centrifugally separating and recycling cat litter and feces specifically comprises the following steps:

[0044] Step 1: Start the lifting motor 1, which drives the lifting mechanism 2 to drive the tray 3 holding the cat litter and feces to rise to the separation position of the sand storage chamber 101 located in the housing 8 and then stop. Start the rotating motor 4, which drives the tray 3 to rotate. The cat litter and feces to be processed on the tray 3 undergo centrifugal motion under the action of rotation. The clean cat litter passes through the filter screen 5 on the side wall of the sand storage chamber 101 and enters the temporary storage chamber 102, while the feces remains on the tray 3. After separation is completed, the tray 3 stops rotating.

[0045] Step 2: Start the lifting motor 1 again, and the lifting motor 1 drives the lifting mechanism 2 to drive the receiving tray 3 with feces to rise to the collection position at the top of the storage chamber 102 and then stop. Start the rotating motor 4 again, and the rotating motor 4 drives the receiving tray 3 to rotate. Under the action of the rotation, the feces on the receiving tray 3 undergoes centrifugal motion and moves into the guide groove 6. The feces flow along the guide groove 6 into the feces collection chamber 103 for collection. After the feces collection is completed, the receiving tray 3 stops rotating;

[0046] Step 3: Start the lifting motor 1 in reverse, the lifting motor 1 drives the lifting mechanism 2 to drive the supporting tray 3 to descend to the initial position, and at the same time, the sand returning mechanism 7 can return the clean cat litter in the temporary storage chamber 102 to the sand storage chamber 101 for recycling under the linkage of the lifting mechanism 2.

[0047] The above-mentioned lifting mechanism 2 is set as a two-stage extension structure. When the lifting motor 1 is started, the first-stage lifting cylinder 211 is extended. As the first-stage lifting cylinder 211 is extended, the lifting mechanism 2 drives the supporting tray 3 to the separation position. When the separation is completed, the lifting motor 1 is started again, and then the second-stage lifting cylinder 212 is extended. As the second-stage lifting cylinder 212 is extended, the lifting mechanism 2 drives the supporting tray 3 to the collection position.

[0048] The above-mentioned litter returning mechanism 7 can be linked with the lifting mechanism 2. When the lifting mechanism 2 rises, the shielding cloth 71 of the litter returning mechanism 7 is in a lowered state, and the position of the shielding cloth 71 is lower than the position of the filter 5. At this time, the temporary storage chamber 102 enclosed by the shielding cloth 71 is used to store clean cat litter; when the lifting mechanism 2 descends, the shielding cloth 71 of the litter returning mechanism 7 is in an raised state, and the position of the shielding cloth 71 is higher than the position of the filter 5. The clean cat litter in the temporary storage chamber 102 flows back into the storage chamber 101 through the filter 5, thereby realizing the recycling and reuse of the cat litter.

[0049] The guide groove 6 is arranged at an angle. After the feces on the tray 3 moves into the guide groove 6 under the action of rotation and undergoes centrifugal motion, the feces is guided along the guide groove 6 into the feces collection chamber 103 under the action of its own gravity.

[0050] The present invention also provides a cat litter device that uses the above-mentioned method for centrifugal separation and recycling of cat litter and feces, including a lifting motor 1, a lifting mechanism 2, a receiving tray 3, a rotating motor 4, a filter screen 5, a guide trough 6, a sand returning mechanism 7 and a shell 8. The shell 8 is a cylindrical structure, and a top opening 81 is provided at the top of the shell 8. A sand storage barrel 9 is provided in the shell 8. The sand storage barrel 9 is a cylindrical structure with openings at both ends. The sand storage barrel 9 is located in the shell 8 below the top opening 81 and is coaxially arranged with the shell 8. The receiving tray 3 is located in the sand storage barrel 9 and can be lifted and rotated in the sand storage barrel 9. The sand storage barrel 9 and the receiving tray 3 are arranged to form a sand storage chamber 101 for placing cat litter.

[0051] The sand storage barrel 9 is fixedly arranged in the outer shell 8 through a support shell 91. The bottom end of the support shell 91 is fixedly installed on the inner bottom of the outer shell 8. The top of the support shell 91 can be fixedly connected to the bottom of the sand storage barrel 9 or detachably connected by snap connection, screw connection, etc. In this embodiment, the side wall of the support shell 91 is provided with a plurality of openings extending to the top of the support shell 91 at intervals along the circumference of the support shell 91. The bottom of the sand storage barrel 9 is provided with a plurality of blocks 94 at intervals along the circumference of the sand storage barrel 9. The blocks 94 can be snapped into the slots 911 to realize the supporting and fixing effect of the support shell 91 on the sand storage barrel 9.

[0052] The output shaft of the lifting motor 1 is connected to the lifting mechanism 2, and the tray 3 is connected to the lifting mechanism 2. The lifting motor 1 can drive the tray 3 to rise and fall in the sand storage cylinder 9 through the lifting mechanism 2. The rotating motor 4 is a universal servo motor. The output shaft of the rotating motor 4 is connected to the tray 3 and can drive the tray 3 to rotate.

[0053] The side wall of the sand storage barrel 9 is set as a hollow cavity 92, and the filter screen 5 is provided on the inner side wall of the sand storage barrel 9, and the area where the filter screen 5 is provided with filter holes is located at the upper part of the inner side wall of the sand storage barrel 9. The hollow cavity 92 of the sand storage barrel 9 is connected with the interior of the sand storage barrel 9 through the filter screen 5. The area where the filter screen 5 is provided with filter holes is the separation position of feces and cat litter. Clean cat litter can enter the hollow cavity 92 of the sand storage barrel 9 through the filter screen 5, while due to agglomeration, contaminated cat litter blocks and feces cannot pass through the filter screen 5 and remain on the receiving tray 3.

[0054] The sand returning mechanism 7 is connected to the lifting mechanism 2. During the resetting process of the lifting mechanism 2, the sand returning mechanism 7 can be linked to return the cat litter in the temporary storage chamber 102 to the sand storage chamber 101 through the filter 5. Specifically, the sand returning mechanism 7 includes a shielding cloth 71, a pull rope 72, a first fixing ring 73 and a second fixing ring 74. The shielding cloth 71 is arranged in the hollow cavity 92, and is surrounded by the hollow cavity 92 to form a temporary storage chamber 102 for temporarily storing clean cat litter.

[0055] The first fixing ring 73 and the second fixing ring 74 are both located in the temporary storage chamber 102. The first fixing ring 73 is fixed on the inner wall of the hollow cavity, and the height of the first fixing ring 71 is flush with the height of the bottom end of the filter 5; the second fixing ring 74 is movably fitted on the outer wall of the hollow cavity 92, and the shielding cloth 71 is connected between the first fixing ring 73 and the second fixing ring 74. One end of the pull rope 72 is connected to the second fixing ring 74, and the other end is connected to the lifting mechanism 2. A through hole 93 for the pull rope 72 to pass through is provided on the top of the hollow cavity 92 of the sand storage cylinder 9.

[0056] The lifting mechanism 2 includes a secondary extension structure 21 and a support seat 22; the secondary extension structure 21 is arranged between the lifting motor 1 and the rotating motor 4, the support seat 22 is fixedly sleeved on the rotating motor 4, and the support seat 22 is provided with a thrust bearing 25 connected to the support tray 3; the top end of the thrust bearing 25 is fixedly connected to the support tray 3, and the bottom end of the thrust bearing 25 is fixedly connected to the support seat 22. The arrangement of the thrust bearing 25 and the support seat 22 can improve the stability of the rotation of the support tray 3.

[0057] The support seat 22 includes a support disc portion 221 and a cylinder portion 222 . The support disc portion 221 is fixedly mounted on the rotating motor 4 . The bottom end of the thrust bearing 23 is connected to the support disc portion 221 . The upper portion of the cylinder portion 222 is fixedly mounted on the outer wall of the support disc portion 221 .

[0058] One end of the pull rope 72 is connected to the second fixing ring 74, and the other end of the pull rope 72 passes through the through hole 93 at the top of the hollow cavity 92, and is connected to the lower part of the cylinder 221 of the support seat 22 through the slot 911 on the support shell 91. A buckle 721 for tying the pull rope 72 is provided on the outer wall of the cylinder 221.

[0059] The sand returning mechanism 7 is matched with the hollow cavity 92 of the sand storage cylinder 9 in the embodiment. The second fixed ring 74 is connected to the bottom of the support base 22 through the pull rope 72. When the supporting tray 3 rises, the second fixed ring 74 descends. The hollow cavity 92 and the shielding cloth 71 form a temporary storage chamber 102. The cat litter can enter the temporary storage chamber 102 through separation. When the supporting tray 3 descends, the second fixed ring 74 rises. The shielding cloth 71 is pulled up to an inward inclined angle. The cat litter returns to the storage chamber 101, realizing the recycling and multiple use of the cat litter. The sand returning mechanism 7 drives the second fixed ring 74 to move by the lifting of the supporting tray 3, thereby adjusting the change of the inclined angle of the shielding cloth 71, so as to control the entry and exit of the cat litter and reduce the number of motors, facilitating the control and implementation of the overall mechanical movement.

[0060] In the lifting process of the lifting motor 1, the shielding cloth 71 can be driven to move through the pull rope 72, thereby realizing the receiving of clean cat litter by the shielding cloth 71 or returning the clean cat litter to the sand storage cylinder 9 through the filter screen 5 for recycling.

[0061] The two-stage telescopic structure 21 includes a first lifting cylinder 211, a second lifting cylinder 212, a first lead screw 213, a second lead screw 214, a fixed cylinder 215, a first rotation limiting structure 23 and a second rotation limiting structure 24. The fixed cylinder 215 is fixedly arranged at the inner bottom of the shell 8. The output end of the lifting motor 1 is connected with the first lead screw 213. The first lead screw 213 is a solid screw structure. The outer surface of the first lead screw 213 is provided with external threads. One end of the first lead screw 213 is connected with the other end of the first lead screw 213. Specifically, the output shaft of the lifting motor 1 is connected with the end of the first lead screw 213 through the lifting motor coupling 11. The other end of the first lead screw 213 extends into the fixed cylinder 215. The bottom of the fixed cylinder 215 is provided with a through hole for the extension of the first lead screw 213.

[0062] The second lead screw 214 is a hollow screw structure. The inner surface and the outer surface of the second lead screw 214 are provided with threads. The second lead screw 214 is threadedly sleeved on the first lead screw 213. That is, the external threads of the first lead screw 213 are engaged with the internal threads of the second lead screw 214. The top end of the second lead screw 214 is provided with a limiting portion 216. The outer surface of the limiting portion 216 is smoothly arranged.

[0063] The secondary lifting cylinder 212 is movably sleeved on the first screw rod 213, and the bottom of the secondary upgrading cylinder 212 is provided with a through hole for the first screw rod 213 to pass through. The secondary lifting cylinder 212 is slidably connected to the fixed cylinder 215 through the first rotation limiting structure 23; specifically, the first rotation limiting structure 23 includes a plurality of first sliders 231 and a plurality of first sliding grooves 232, the first sliding grooves 232 are opened on the inner side wall of the fixed cylinder 215 along the axial direction of the fixed cylinder 215, and the plurality of first sliding grooves 232 are evenly spaced along the circumference of the fixed cylinder 215 on the inner side wall of the fixed cylinder 215, the first slider 231 is provided on the outer side wall of the secondary lifting cylinder 212, and the first slider 231 is slidably connected in the first sliding grooves 232, and the plurality of first sliders 231 are evenly spaced along the circumference of the secondary lifting cylinder 212 on the outer side wall of the secondary lifting cylinder 212. By the arrangement of the first rotation limiting structure 23, the secondary lifting cylinder 212 cannot rotate and can be lifted and lowered along the axial direction of the fixed cylinder 215.

[0064] The rotating motor 4 is fixedly mounted on the top of the first-stage lifting cylinder 211, and the first-stage lifting cylinder 211 is threadedly sleeved on the second screw rod 214. The bottom of the first-stage lifting cylinder 211 is provided with a threaded hole for the second screw rod 214 to pass through. The threaded hole is engaged with the external thread of the second screw rod 214. The first-stage sleeve is slidably connected to the first-stage lifting cylinder 211 through the second rotation limiting structure 24. Specifically, the second rotation limiting structure 24 includes a plurality of second sliders 241 and a plurality of second slide grooves 242. The second slide grooves 242 are opened on the second-stage lifting cylinder along the axial direction of the second-stage lifting cylinder 212. On the inner wall of the secondary lifting cylinder 212, several second sliding grooves 242 are evenly spaced along the circumference of the secondary lifting cylinder 212 on the inner wall of the secondary lifting cylinder 212, and the second slider 241 is provided on the outer wall of the primary lifting cylinder 211, and the second slider 241 is slidably connected in the second sliding groove 242, and several second sliders 241 are evenly spaced along the circumference of the primary lifting cylinder 211 on the outer wall of the primary lifting cylinder 211. Through the setting of the second rotation limiting structure 24, the primary lifting cylinder 211 cannot rotate and can be lifted and lowered along the axial direction of the secondary lifting cylinder 212.

[0065] When the lifting motor 1 is working, it drives the first screw rod 213 to rotate, the second screw rod 214 is threadedly connected to the first screw rod 213, the first lifting cylinder 211 is threadedly connected to the second screw rod 214, and the second rotation limiting structure 24 limits the rotation of the first lifting cylinder 211, so the first lifting cylinder 211 can first extend upward along the second lifting cylinder 212. When the first lifting cylinder 211 moves to the limiting portion 216 of the second screw rod 214, the first lifting cylinder 211 is released from the threaded connection with the second screw rod 214. At this time, the first lifting cylinder 211 cannot continue to extend, and the second screw rod 214 moves upward along the first screw rod 213. The second screw rod 214 drives the first lifting cylinder 211 to move upward together. Due to the top limit of the first lifting cylinder 211 and the second lifting cylinder 212, the first lifting cylinder 211 drives the second lifting cylinder 212 to move upward together, thereby realizing the extension of the second lifting cylinder 212.

[0066] Through the two-stage extension of the secondary extension structure 21, the first-stage lifting cylinder 211 is first extended to move the receiving tray 3 to the filter holes of the filter screen 5 to separate the feces in the cat litter, and then the second-stage lifting cylinder 212 is extended to move the feces trapped on the receiving tray 3 to the feces collection area for collection and processing.

[0067] In this embodiment, the secondary extension structure 21 adopts a screw structure, which is not only simple to set up, but also has a large axial transmission force and strong transmission stability. It can also effectively shorten the overall longitudinal structural dimensions of the machine and effectively save space. At the same time, the secondary extension corresponds to the separation position of cat litter and feces and the collection position of feces in the work process, making the control process of the work process movement simple, stable and reliable.

[0068] The guide groove 6 is located at the top of the sand storage chamber 101, and can guide the separated feces into the feces collection chamber 103. The top outer wall of the sand storage cylinder 9 is provided with a guide ring 61 arranged at an angle. The guide groove 6 is provided on the guide ring 61, and a removable feces collection box 62 is provided on the outer shell 8. Specifically, an opening is provided on the side wall of the outer shell 8, and a support frame 63 for supporting the feces collection box 62 is installed on the inner wall of the opening. The feces collection box 62 can be placed on the support frame 63 for collecting feces, and the feces collection box 62 can also be pulled out from the support frame 63 to clean the feces in the feces collection box 62.

[0069] In this embodiment, the feces collection box 62 is a built-in design and does not take up additional space. The cat's feces falls into the feces collection box 62 through the guide groove 6, which reduces the cat owner's feces shoveling work and can better cover the smell of feces. The feces collection box is inside the shell 8 and is closed for temporary storage, which avoids the cat touching it and getting it dirty, and prevents the owner from seeing the feces frequently to avoid "visual pollution".

[0070] The top of the feces collection box 62 is open, and the interior of the feces collection box 62 is a feces collection chamber 103. The guide ring 61 is connected to the feces collection box 62. Specifically, the guide ring 61 has an outlet at its lowest point. The outlet is a circular opening. Due to the perspective, the outlet is not shown in the figure. The outlet is located above the feces collection box 62. When feces is transferred to the guide ring 61, due to the inclined setting of the guide ring 61, the feces can move to the outlet of the guide ring 61 under the action of its own gravity and fall into the feces collection box 62 through the outlet.

[0071] The guide groove 6 is inclined and has a semicircular cross section. The feces thrown out from the tray 3 can slide down better under the force of gravity and fall into the feces collection box 62 through the outlet. As a preferred technical solution, the guide ring 61 can be made of smooth plastic to reduce friction and facilitate the movement of feces.

[0072] As a preferred technical solution, the various components of the present invention can be configured to be detachably connected. This configuration not only facilitates the transportation of the cat litter device, but also facilitates the maintenance of the cat litter device. If a part is damaged, it can be easily replaced.

[0073] When the cat litter device is working, the lifting motor 1 is started, and the first-stage lifting cylinder 211 slowly extends, driving the tray 3 containing cat litter and feces to rise to the separation position at the filter screen 5 of the sand storage chamber 101 and then stop. At the same time, as the tray 3 rises, the support seat 22 also rises. At this time, the pull rope 72 is in a loose state, and the second fixing ring 74 descends, driving the end of the shielding cloth 71 connected to the second fixing ring 74 to descend, so that the entire shielding cloth 71 is in a downward and tilted state. At this time, the shielding cloth 71 and the hollow cavity 92 are enclosed as a temporary storage chamber 102 for temporarily storing clean cat litter. When the tray 3 stops, the rotating motor 4 is started, and the rotating motor 4 drives the tray 3 to rotate. The cat litter and feces to be processed on the tray 3 undergo centrifugal motion under the action of rotation. The clean cat litter passes through the filter screen 5 on the side wall of the sand storage chamber 101 and enters the temporary storage chamber 102, and the feces remain on the tray 3. After separation is completed, the tray 3 stops rotating.

[0074] The lifting motor 1 is started again, and the secondary lifting cylinder 212 slowly extends, driving the receiving tray 3 with feces to rise to the collection position at the top of the storage chamber 102 and then stop. The rotating motor 4 is started again, and the rotating motor 4 drives the receiving tray 3 to rotate. Under the action of the rotation, the feces on the receiving tray 3 undergoes centrifugal motion and moves into the guide groove 6. The feces flow along the guide groove 6 into the feces collection chamber 103 for collection. After the feces collection is completed, the receiving tray 3 stops rotating.

[0075] Start the lifting motor 1 in reverse, the first-level lifting cylinder 211 and the second-level lifting cylinder 212 gradually retract, and drive the supporting tray 3 to descend to the initial position. At the same time, the support seat 22 also descends, and the pull rope 72 is tightened, the second fixing ring 74 rises, and at the same time drives the end of the shielding cloth 71 connected to the second fixing ring 74 to rise, so that the entire shielding cloth 71 is in an upward and tilted state, and the clean cat litter on the shielding cloth 71 can be returned to the sand storage chamber 101 through the filter screen 5 for recycling.

[0076] The present invention utilizes its inertia and centrifugal force, combined with the filtering effect, to separate cat litter and feces. During the separation process, the rotation of the rotary motor is controlled to control the high-speed rotation of the support tray, which generates centrifugal force through rotation. At the same time, the cat litter and feces are separated by the screening effect of the filter screen. By rotating the support tray forward and backward, the inertia and centrifugal force are utilized to effectively separate the cat litter, which not only has a good cleaning effect but also high efficiency. After the cat litter and feces are separated, the cat feces are thrown out into the diversion chute through the rotation of the chassis. The bottom of the chute has a round hole and slides into the built-in collection area. At the same time, the cat litter is stretched and reversed by the sand returning mechanism. The cat litter will be adjusted due to the inclination angle of the shielding cloth. The separated cat litter will be collected again in the cat litter box for repeated use, closed-loop recycling, and reduced cat litter waste.

[0077] The present invention can fully automatically clean cat litter, separate feces from cat litter, clean and collect feces, and even the cat litter can be recycled and reused in the storage room again, without the need for manual processing. It can effectively help cat owners solve the problems of tedious feces shoveling process, unpleasant odor, visual pollution, etc., and is environmentally friendly and hygienic.

[0078] In addition, the overall appearance of the cat litter device of the present invention is cylindrical, with perfect transition, compact structure, stable placement, small redundant space, and cats cannot enter, ensuring the safety of cats. At the same time, the smooth arc transition is beautiful and can prevent cats from being scratched. Plastic can be used as the material, with a lightweight structure and low cost. At the same time, plastic can reduce cats' injuries and play a protective role. It is also easy to disassemble and clean, and is durable and environmentally friendly.

[0079] Example 2

[0080] This embodiment is a method for centrifugally separating and recycling cat litter and feces, and embodiment 2 of a cat litter device. The difference between this embodiment and embodiment 1 is that: in this embodiment, a groove 217 for installing a rotary motor 4 is provided at the top center position of the first-stage lifting cylinder 211. The rotary motor 4 is fixedly installed in the groove 217 at the top of the first-stage lifting cylinder 211. The provision of the groove 217 facilitates the stable and accurate installation of the rotary motor 4.

[0081] Example 3

[0082] This embodiment is a method for centrifugal separation and recycling of cat litter and feces and embodiment 3 of a cat litter device. The difference between this embodiment and embodiment 1 is that: in this embodiment, in order to facilitate the convenient and rapid removal of the feces collection box 62 from the support frame 63, a handle 621 is provided on the feces collection box 62 for easy manual pulling.

[0083] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A method for centrifugal separation and recycling of cat litter and feces, characterized in that: The specific steps include: Step 1: Start the lifting motor (1), the lifting motor (1) drives the lifting mechanism (2) to drive the tray (3) holding the cat litter and feces to rise to the separation position of the sand storage chamber (101) located in the shell (8) and then stop, start the rotating motor (4), the rotating motor (4) drives the tray (3) to rotate, the cat litter and feces to be processed on the tray (3) undergo centrifugal motion under the action of rotation, the clean cat litter passes through the filter (5) on the side wall of the sand storage chamber (101) and enters the temporary storage chamber (102), and the feces remain on the tray (3), and after the separation is completed, the tray (3) stops rotating; Step 2: Start the lifting motor (1) again, the lifting motor (1) drives the lifting mechanism (2) to drive the supporting tray (3) supporting the feces to rise to the collection position at the top of the sand storage chamber (101) and then stop, and start the rotating motor (4) again, the rotating motor (4) drives the supporting tray (3) to rotate, and the feces on the supporting tray (3) moves into the guide groove (6) under the action of the rotation, and enters the feces collection chamber (103) along the guide groove (6) for collection. After the feces collection is completed, the supporting tray (3) stops rotating; Step 3: Reversely start the lifting motor (1), the lifting motor (1) drives the lifting mechanism (2) to drive the supporting tray (3) to descend to the initial position, and at the same time, the sand returning mechanism (7) can return the clean cat litter in the temporary storage chamber (102) to the sand storage chamber (101) for recycling under the linkage of the lifting mechanism (2); the sand returning mechanism (7) can follow the lifting mechanism (2) linkage, and when the lifting mechanism (2) rises, the shielding cloth (71) of the sand returning mechanism (7) is in a descending state, shielding The position of the cloth (71) is lower than the position of the filter (5), and the temporary storage chamber (102) formed by the shielding cloth (71) can store clean cat litter; when the lifting mechanism (2) descends, the shielding cloth (71) of the sand returning mechanism (7) is in an ascending state, and the position of the shielding cloth (71) is higher than the position of the filter (5), and the clean cat litter in the temporary storage chamber (102) flows back into the sand storage chamber (101) through the filter (5), thereby realizing the recycling and reuse of the cat litter.

2. A method for centrifugal separation and recycling of cat litter and feces according to claim 1, characterized in that: The lifting mechanism (2) is configured as a two-stage extension structure; when the lifting motor (1) is started, the first-stage lifting cylinder (211) is extended, and as the first-stage lifting cylinder (211) is extended, the lifting mechanism (2) drives the supporting tray (3) to the separation position; when the separation is completed, the lifting motor (1) is started again, and then the second-stage lifting cylinder (212) is extended, and as the second-stage lifting cylinder (212) is extended, the lifting mechanism (2) drives the supporting tray (3) to the collection position.

3. A method for centrifugal separation and recycling of cat litter and feces according to claim 1, characterized in that: The guide groove (6) is arranged at an angle, and after the feces on the supporting tray (3) moves into the guide groove (6) through centrifugal motion under the action of rotation, the feces is guided along the guide groove (6) into the feces collection chamber (103) under the action of its own gravity.

4. A cat litter device using the method for centrifugal separation and recycling of cat litter and feces according to any one of claims 1 to 3, characterized in that: The invention comprises a lifting motor (1), a lifting mechanism (2), a supporting tray (3), a rotating motor (4), a filter screen (5), a guide groove (6), a sand returning mechanism (7) and a shell (8); a sand storage chamber (101), a temporary storage chamber (102) and a feces collection chamber (103) are provided in the shell (8); an output shaft of the lifting motor (1) is connected to the lifting mechanism (2); the supporting tray (3) is located in the sand storage chamber (101) and is connected to the lifting mechanism (2); the lifting motor (1) can drive the supporting tray (3) to move up and down in the sand storage chamber (101) through the lifting mechanism (2); The output shaft of the rotating motor (4) is connected to the supporting tray (3) and can drive the supporting tray (3) to rotate; the sand storage chamber (101) and the temporary storage chamber (102) are connected through the filter screen (5); the guide groove (6) is located at the top of the sand storage chamber (101) and can guide the separated feces into the feces collection chamber (103); the sand return mechanism (7) is connected to the lifting mechanism (2); during the resetting process of the lifting mechanism (2), the sand return mechanism (7) can be linked to return the cat litter in the temporary storage chamber (102) to the sand storage chamber (101) through the filter screen (5); The top of the shell (8) is provided with an opening (81), and the shell (8) is further provided with a sand storage cylinder (9) located below the opening (81), and the sand storage cylinder (9) and the supporting tray (3) are arranged to form the sand storage chamber (101); the side wall of the sand storage cylinder (9) is arranged as a hollow cavity (92), and the filter (5) is arranged on the inner side wall of the sand storage cylinder (9), and the hollow cavity (92) of the sand storage cylinder (9) is connected to the sand storage cylinder (9) through the filter (5); the sand returning mechanism (7) includes a shielding cloth (71) and a pull rope (72), the shielding cloth (71) is arranged in the hollow cavity (92), and is arranged to form the temporary storage chamber (102) with the hollow cavity (92), one end of the pull rope (72) is connected to the shielding cloth (71), and the other end is connected to the lifting mechanism (2), A through hole (93) is provided at the top of the hollow cavity (92) of the cylinder (9) for the pull rope (72) to pass through; the sand returning mechanism (7) further comprises a first fixing ring (73) and a second fixing ring (74), both of which are located in the temporary storage chamber (102); the first fixing ring (73) is fixed on the inner wall of the hollow cavity (92), and the height of the first fixing ring (73) is flush with the height of the bottom end of the filter screen (5); the second fixing ring (74) is movably fitted on the outer wall of the hollow cavity (92), the shielding cloth (71) is connected between the first fixing ring (73) and the second fixing ring (74), one end of the pull rope (72) is connected to the second fixing ring (74), and the other end is connected to the lifting mechanism (2).

5. The cat litter device according to claim 4, characterized in that: The lifting mechanism (2) includes a secondary extension structure (21) and a support seat (22); the secondary extension structure (21) is arranged between the lifting motor (1) and the rotating motor (4); the support seat (22) is sleeved on the rotating motor (4); the support seat (22) is provided with a thrust bearing (25) connected to the support tray (3); the support seat (22) is connected to the pull rope (72).

6. The cat litter device according to claim 4, characterized in that: The top outer wall of the sand storage cylinder (9) is provided with an inclined guide ring (61), the guide groove (6) is provided on the guide ring (61), the housing (8) is provided with a removable feces collection box (62), the interior of the feces collection box (62) is a feces collection chamber (103); the guide ring (61) is connected to the feces collection box (62).

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