Automatic cat litter basin screening device and method

Abstract

The automatic cat litter basin screening device comprises a base, a supporting seat and an arc-shaped screen, the base is provided with an arc-shaped opening cavity matched with the arc-shaped screen in shape and a discharge opening penetrating through the inner wall of the arc-shaped opening cavity, and the supporting seat is rotationally arranged on the inner wall of the side, adjacent to the discharge opening, of the arc-shaped opening cavity; the rotating fulcrum of the supporting seat is located in the center of the arc-shaped open cavity, the arc-shaped screen is rotationally arranged on the side wall of the supporting seat and located at the bottom of the arc-shaped open cavity, the supporting seat can drive the arc-shaped screen to move along the inner wall of the arc-shaped open cavity, and the discharge port is located on the moving path of the arc-shaped screen. And the arc-shaped screen can also gradually turn over towards the excretion opening, so that urine and excrement screened out of the cat litter can be poured into the excretion opening. According to the embodiment of the invention, the supporting seat rotates to drive the arc-shaped screen to lift and screen out excrement in cat litter, the arc-shaped screen turns over and pours the excrement, lifting and screening avoid extrusion of the excrement, the adhesion condition is reduced, and cleanliness is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of pet excrement treatment, and in particular to an automatic cat litter box screening device and method. Background Art

[0002] As people's demand for the care of pet cats increases, how to clean the cat litter box effectively and conveniently has become a focus of attention for many cat owners. Traditional manual cleaning of the cat litter box is not only time-consuming and laborious, but also easy to cause odor and unsanitary. Therefore, the emergence of automatic cat litter boxes has greatly improved the convenience of pet care. The fully automatic cat litter box can automatically clean cat feces and urine balls and automatically add cat litter through intelligent control systems and mechanized operations, which greatly reduces the burden on cat owners and improves the cat-raising experience. However, despite the increasingly improved functions of the fully automatic cat litter box, there are still many deficiencies in the existing technology that need to be improved.

[0003] The most common fully automatic cat litter boxes on the market currently use two main methods to clean up cat feces and urine. The first is a rolling shovel screening motion, which places the cat litter in a rotatable drum with a sand storage compartment inside. A screen or comb is installed at the door of the sand storage compartment. When the drum rotates, the cat litter remains at the bottom of the drum due to inertia, and the clumped cat feces and urine are separated from the cat litter by the screen or comb, and finally sent to the storage compartment. The second method is a scraper screening motion, which fixes the cat litter on a base and drives the comb to move along a specific track through a motor to scrape or shovel out the clumped cat feces and urine.

[0004] However, in a roller-type cat litter box, cat feces and urine balls may adhere to the drum wall or screen due to poor clumping or softness, making it impossible to roll off smoothly, thus affecting the cleaning effect and producing odor. In a scraper-type cat litter box, the cat feces and urine balls may be squeezed to the base or adhered to the comb teeth due to the squeezing or scraping of the comb teeth, producing a bad smell. These two designs fail to effectively isolate cat feces and urine balls, making it difficult to avoid the stench. In addition, these cat litter boxes have poor screening effects on cat feces and urine balls that are located to the back or not completely clumped, and some cat feces and urine balls are not cleaned in time. At the same time, the requirements for cat litter increase the user's selection cost, and frequent cleaning of the screen or comb teeth also increases the time cost of maintenance. Therefore, the existing fully automatic cat litter boxes still have certain limitations in design and use, and are in urgent need of optimization. Summary of the invention

[0005] The invention provides an automatic cat litter box screening device and method, so as to solve the technical problem that the existing cat litter cleaning device cannot effectively clean feces and urine, which easily leads to odor and affects health.

[0006] In order to solve the above technical problems, the present invention provides an automatic cat litter box screening device, comprising a base, a support base and an arc-shaped screen, the base is provided with an arc-shaped opening cavity for placing cat litter and a discharge port penetrating the inner wall of the arc-shaped opening cavity, the support base is rotatably arranged on the inner wall of the arc-shaped opening cavity adjacent to the discharge port, the rotation fulcrum of the support base is located at the center of the arc-shaped opening cavity, the arc-shaped screen is rotatably arranged on the side wall of the support base, the arc-shaped screen is adapted to the shape of the arc-shaped opening cavity, and the arc-shaped screen is located at the bottom of the arc-shaped opening cavity, the support base can drive the arc-shaped screen to move along the inner wall of the arc-shaped opening cavity, the discharge port is located on the moving path of the arc-shaped screen, and when the support base rotates to drive the arc-shaped screen to move, the arc-shaped screen will also gradually flip in the direction close to the discharge port so as to pour the feces and urine screened out of the cat litter into the discharge port.

[0007] Furthermore, the support seat includes a swinging member rotatably arranged on the inner wall of the arc-shaped opening cavity and a limiting member slidably arranged on the inner wall of the other side of the arc-shaped opening cavity relative to the swinging member. The two sides of the arc-shaped screen are respectively rotatably connected to the swinging member and the limiting member. The swinging member is used to drive the arc-shaped screen and the limiting member to move, and the sliding path of the limiting member is the same as the moving path of the arc-shaped screen.

[0008] Furthermore, a slide is provided on the side wall of the limiting member, an arcuate slide groove matched with the slide is provided on the inner wall of the arcuate opening cavity, and the slide is slidably arranged in the arcuate slide groove to limit the moving position of the arcuate screen.

[0009] Furthermore, an arc-shaped boss matched with the shape of the arc-shaped screen is arranged on one side wall opposite to the swinging member and the limiting member, and the bottom of the arc-shaped screen can be detachably arranged on the arc-shaped boss.

[0010] Furthermore, the support seat also includes a plurality of support rods, both ends of the support rods are respectively fixed on the arc-shaped boss, the bottom of the arc-shaped screen can be detachably arranged on the support rods, and the density of the support rods gradually decreases from one side of the discharge port to the other side away from the discharge port; or, the support rods are evenly arranged on the arc-shaped boss.

[0011] Furthermore, it also includes a driver, which includes a first motor for driving the swing member to rotate and a second motor for driving the arc-shaped screen to rotate, the first motor is arranged on the inner wall of the arc-shaped opening cavity and connected to the swing member, and the second motor is arranged on the swing member and connected to the arc-shaped screen.

[0012] Furthermore, the driver also includes a vibration motor and a rotating shaft, one end of the rotating shaft is connected to the second motor, and the other end is rotatably set on the limit member, and one end of the arc screen close to the discharge port is set on the rotating shaft, and the other end is fixedly connected to the vibration motor.

[0013] Furthermore, the base is provided with a waste bin connected to the discharge port and a discharge bin cover adapted to the discharge port, the discharge bin cover is hinged on the discharge port, and the swinging member is drivingly connected to the discharge bin cover for controlling the discharge bin cover to open and close the discharge port.

[0014] Furthermore, before the arc-shaped screen reaches the discharge port, the inclination angle of the arc-shaped screen to the horizontal direction ranges from 0° to 5°.

[0015] On the other hand, the present invention further provides an automatic cat litter box screening method, characterized in that screening is performed by any one of the automatic cat litter box screening devices, comprising:

[0016] The support seat drives the arc-shaped screen to move along the inner wall of the arc-shaped opening cavity, and the arc-shaped screen flips toward the discharge port to screen the feces and urine out of the cat litter;

[0017] After the arc-shaped screen moves to the discharge port, the support seat stops rotating, and the arc-shaped screen continues to flip in the original direction to pour the feces and urine into the discharge port;

[0018] After the urine and feces are dumped, the support seat drives the arc-shaped screen to continue to move in the original direction, and the arc-shaped screen flips back to the discharge port and resets;

[0019] The arc-shaped screen is higher than the cat litter storage cut-off line, and after the arc-shaped screen is reset, the support seat drives the arc-shaped screen to move back to the bottom of the open cavity.

[0020] Compared with the prior art, the automatic cat litter box screening device and method according to the embodiment of the present invention has the following beneficial effects:

[0021] The embodiment of the present invention provides a movable arc-shaped screen at the bottom of the arc-shaped open cavity where cat litter is placed, and cooperates with a support seat rotatably arranged on the inner wall of the arc-shaped open cavity. When the feces and urine in the cat litter are screened and cleaned, the support seat will drive the arc-shaped screen to rotate and move it along the inner wall of the arc-shaped open cavity, and the arc-shaped screen will also slowly flip in the direction close to the discharge port to maintain its relatively horizontal position to prevent the arc-shaped screen from tilting excessively and causing the screened feces and urine to roll back; when the arc-shaped screen reaches the discharge port, the support seat stops rotating, and the arc-shaped screen flips at a large angle in the original direction, so that the feces and urine roll into the discharge port by inertia, thereby completing the effective screening and cleaning of the feces and urine. The lifting and screening design of the arc-shaped screen can effectively avoid squeezing of feces and urine, and reduce the situation where feces and urine adhere to the screen. Thereby ensuring that the feces and urine are cleaned up, maintaining the hygiene of the device and ensuring health; at the same time, in order to prevent the feces and urine left in a small part on the curved screen from emitting odor, after the feces and urine are dumped, the curved screen will flip back to the discharge port, and at the same time the support seat will continue to drive the curved screen to continue to rotate in the original direction, so that it is higher than the cat litter storage cut-off line, to prevent the curved screen from being blocked from contacting the cat litter when it is reset, and then the support seat drives the curved screen to move toward the bottom of the curved opening, so that the curved screen is re-buried in the cat litter at the bottom, effectively isolating the residual feces and urine and avoiding the generation of odor. The whole process is highly automated, reducing human intervention, and can significantly improve the cleaning efficiency of the cat litter box, providing great convenience for users. It meets the needs of modern families for smart pet products and has broad application prospects.

[0022] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to better understand the present invention and do not constitute a limitation of the present invention.

[0024] Figure 1 It is a structural schematic diagram of an automatic cat litter box screening device provided by an embodiment of the present invention from an angle;

[0025] Figure 2 is a schematic structural diagram of the automatic cat litter box screening device provided by an embodiment of the present invention from another angle;

[0026] Figure 3 2 is a schematic structural diagram of the automatic cat litter box screening device provided by an embodiment of the present invention from another angle;

[0027] Figure 4 yes Figure 3 Full cross-sectional view in the AA direction;

[0028] Figure 5 yes Figure 3 Full cross-sectional view in the middle BB direction;

[0029] Figure 6 It is a structural schematic diagram of an angle of a support seat in an automatic cat litter box screening device provided by an embodiment of the present invention;

[0030] Figure 7 It is a structural schematic diagram of another angle of the support base in the automatic cat litter box screening device provided by an embodiment of the present invention;

[0031] Figure 8 Schematic diagram of the structure of the plastic film in the automatic cat litter box screening device provided by an embodiment of the present invention;

[0032] Fig. 9 is a state diagram of the automatic cat litter box screening device provided by an embodiment of the present invention in screening operation;

[0033] Fig.10 is a state diagram of the automatic cat litter box screening device provided by an embodiment of the present invention in a dumping operation;

[0034] Fig.11 This is a state diagram of the automatic cat litter box screening device provided by an embodiment of the present invention in a resetting operation.

[0035] In the figure, 10, base; 11, arc-shaped opening; 12, discharge port; 13, discharge bin cover; 14, arc-shaped chute; 15, waste bin; 16, cat litter storage bin; 17, cat litter input port; 18, cat litter bin cover; 19, plastic film; 20, support seat; 21, swing member; 22, limit member; 23, slide; 24, arc-shaped boss; 25, support rod; 30, driver; 31, first motor; 32, second motor; 33, vibration motor; 40, arc-shaped screen; 50, machine cover. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings and embodiments in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] In the description of the present invention, it should be noted that directional words, such as the terms "middle", "upper", "lower", "inside" and "outside", etc., indicating directions and positional relationships are based on the directions or positional relationships 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 direction, be constructed and operated in a specific direction, and cannot be understood as limiting the specific scope of protection of the present invention.

[0038] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the definition of "first" and "second" features can explicitly or implicitly include one or more of the features. In the description of the present invention, "at least" means one or more, unless otherwise clearly and specifically defined.

[0039] In the present invention, unless otherwise specified and limited, the terms "assemble", "connect", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can also be a mechanical connection; it can be directly connected, or it can be connected through an intermediate medium, or the two elements can be internally connected. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] like Figure 1-5 As shown, an embodiment of the present invention provides an automatic cat litter box screening device, comprising a base 10, a support base 20 and an arc-shaped screen 40. The base 10 is provided with an arc-shaped opening cavity 11 for placing cat litter and a discharge port 12 penetrating the inner wall of the arc-shaped opening cavity 11. The support base 20 is rotatably arranged on the inner wall of the arc-shaped opening cavity 11 adjacent to the discharge port 12. The rotation fulcrum of the support base 20 is located at the center of the arc-shaped opening cavity 11. The arc-shaped screen 40 is rotatably arranged on the side of the support base 20. On the wall, the arc-shaped screen is adapted to the shape of the arc-shaped open cavity, and the arc-shaped screen 40 is located at the bottom of the arc-shaped open cavity 11, the support seat 20 can drive the arc-shaped screen 40 to move along the inner wall of the arc-shaped open cavity 11, and the excretion port 12 is located on the moving path of the arc-shaped screen 40. When the support seat 20 rotates to drive the arc-shaped screen 40 to move, the arc-shaped screen 40 will also gradually flip towards the direction close to the excretion port 12, so as to pour the feces and urine screened out of the cat litter into the excretion port 12.

[0041] The embodiment of the present invention provides a movable arc-shaped screen 40 at the bottom of the arc-shaped open cavity 11 where cat litter is placed, and cooperates with the support seat 20 rotatably arranged on the inner wall of the arc-shaped open cavity 11. When screening and cleaning the feces and urine in the cat litter, the support seat 20 will drive the arc-shaped screen 40 to rotate so that it moves along the inner wall of the arc-shaped open cavity 11, and the arc-shaped screen 40 will also slowly flip in the direction close to the discharge port 12, maintaining its relatively horizontal position to prevent the arc-shaped screen 40 from tilting excessively and causing the screened feces and urine to roll back; and when the arc-shaped screen 40 reaches the discharge port 12, the support seat 20 stops rotating, and the arc-shaped screen 40 flips at a large angle in the original direction, so that the feces and urine roll into the discharge port 12 by inertia, thereby completing the effective screening and cleaning of the feces and urine. The lifting screening design of the arc-shaped screen 40 can effectively avoid squeezing the feces and urine, and reduce the adhesion of feces and urine to the discharge port 12. The condition of the screen, thereby ensuring that the feces and urine are cleaned, maintaining the hygiene of the device and ensuring health; at the same time, in order to prevent the feces and urine left on the curved screen 40 from emitting odor, after the feces and urine are dumped, the curved screen 40 will flip back to the discharge port 12, and at the same time, the support seat 20 will continue to drive the curved screen 40 to continue to rotate in the original direction, so that it is higher than the cat litter storage cut-off line to prevent the curved screen 40 from being blocked from contacting the cat litter when it is reset, and then the support seat 20 drives the curved screen 40 to move toward the bottom of the curved opening 11, so that the curved screen 40 is re-buried in the cat litter at the bottom, effectively isolating the residual feces and urine, and avoiding the generation of odor. The whole process is highly automated, reducing human intervention, and can significantly improve the cleaning efficiency of the cat litter box, providing great convenience for users, meeting the needs of modern families for smart pet products, and has broad application prospects.

[0042] Among them, the arc structure design of the arc screen 40 matches the shape of the arc open cavity 11, so that it can fit closely to the inner wall of the arc open cavity 11, achieve all-round coverage and screening during the movement, and clean the feces and urine in the cat litter without omission, and the arc design allows the arc screen 40 to move smoothly along the arc inner wall, reduce jamming and running resistance, and improve screening efficiency. At the same time, the arc structure can naturally guide the feces and urine to slide to the discharge port 12 when the screen is tilted. When the arc screen 40 reaches the discharge port 12, the large-angle flip will cause the feces and urine to roll into the discharge port 12 by inertia, avoiding the problem of residue and adhesion during the cleaning process. The rotation fulcrum of the support seat 20 coincides with the center of the arc open cavity 11, ensuring that the arc screen 40 can always maintain uniform contact with the inner wall of the arc open cavity 11 during the rotation process. This design can realize the smooth and symmetrical rotation of the screen, avoid uneven contact of the screen due to deviation from the center, and thus improve the uniformity and efficiency of the screening effect. In short, the arc-shaped adaptation design of the arc-shaped screen 40 and the arc-shaped opening 11 gives the device a more smooth appearance structure. At the same time, the movement and screening process of the arc-shaped screen 40 is more coordinated with the dynamic coordination of the entire device, thereby improving the intelligence of the product and the user experience.

[0043] When the support seat 20 rotates and drives the arc screen 40 to move along the inner wall of the arc-shaped opening cavity 11 toward its top, due to the curvature design of the arc-shaped opening cavity 11 itself, the arc screen 40 will tilt at a large angle during the climbing process. In order to prevent the screened feces and urine from rolling back, the arc screen 40 will also slowly rotate toward the discharge port 12 to ensure that it is always stably lifted in a relatively horizontal or small inclination posture before reaching the discharge port 12. When the arc screen 40 reaches the range of the discharge port 12, the support seat 20 stops rotating, and the arc screen 40 continues to flip toward the discharge port 12 to a specific angle range, so that the screened feces and urine can be poured into the discharge port 12, completing the cleaning of the cat litter.

[0044] In addition, resetting the support seat 20 and the curved screen 40 to their initial positions is important. Due to the soft nature of feces and urine, a small amount of feces and urine may adhere to the surface of the screen during the screening process. By resetting the support seat 20 and the curved screen 40, on the one hand, the adhered feces and urine can be isolated by cat litter to prevent the generation of odor; on the other hand, during the resetting process, the curved screen 40 needs to be re-buried in the cat litter. With the help of the resistance of the cat litter, the feces and urine adhered to the curved screen 40 will be re-wrapped in the cat litter, so that they can be separated during the next screening and cleaning. This design effectively ensures the cleanliness of the curved screen 40 and improves the overall use effect of the device.

[0045] It should be noted that the base 10 is a fixed bearing component of the entire device, and its main function is to provide a stable supporting force. The base 10 itself does not perform any rotation or translation and other actions, it is only used to carry other components of the device to ensure the stability of the entire structure. An opening space leading to the outside world is opened on the base 10, which is specifically used to place cat litter. The design of this arc-shaped opening cavity 11 can facilitate pets to enter and use the cat litter box, and at the same time provide a space for the arc-shaped screen 40 to move in it, providing a convenient use space for pets, and pets can naturally enter and use the cat litter box. At the same time, a cover 50 is also provided on the top of the base 10, and the cover 50 can be snapped on the base 10 to prevent the arc-shaped opening cavity 11 from being exposed to the outside world.

[0046] like Figure 4-7 As shown, in an optional embodiment of the present invention, the support seat 20 includes a swinging member 21 rotatably arranged on the inner wall of the arc-shaped opening cavity 11 and a limiting member 22 slidably arranged on the inner wall of the other side of the arc-shaped opening cavity 11 relative to the swinging member 21. The two sides of the arc-shaped screen 40 are respectively rotatably connected to the swinging member 21 and the limiting member 22. The swinging member 21 is used to drive the arc-shaped screen 40 and the limiting member 22 to move, and the sliding path of the limiting member 22 is the same as the moving path of the arc-shaped screen 40.

[0047] Specifically, by arranging the swinging member 21 and the limiting member 22 that cooperate with each other on both sides of the arc screen 40, the swinging member 21 is used to drive the arc screen 40 and the limiting member 22 to move synchronously, and the sliding path of the limiting member 22 is consistent with the moving path of the screen, so as to avoid the arc screen 40 from deflecting or shaking irregularly during the movement. The swinging member 21 drives the coordinated movement of the screen and the limiting member 22, so that the screen can move smoothly on the inner wall of the arc opening 11, improving the accuracy and smoothness of the screening process, thereby realizing the accurate screening function and ensuring that the screened feces and urine can be accurately guided to the discharge port 12. This structural design reduces the wear degree of the system and prolongs the service life of the device by reducing the friction and unnecessary burden between the screen and other components. The sliding path of the limiting member 22 accurately matches the moving path of the screen, which can not only effectively reduce the failure rate of the system and improve the overall reliability of the equipment, but also make the equipment more stable during operation, reduce the jamming or unsmoothness caused by the instability of the screen, thereby improving the user experience.

[0048] It should be noted that a small gap is usually designed between the side wall of the arc-shaped screen 40 and the side wall of the limit member 22, which reduces the possibility of direct contact between the arc-shaped screen 40 and the inner wall of the arc-shaped opening cavity 11, thereby reducing the friction and wear between the components and extending the service life of the equipment; at the same time, this design can effectively prevent cat litter from being stuck between the arc-shaped screen 40 and the inner wall of the arc-shaped opening cavity 11, thereby preventing the screen movement from being obstructed or the device from being stuck due to cat litter accumulation, thereby ensuring the smooth operation of the device and the stability of the screening effect.

[0049] like Figure 5-7 As shown, in an optional embodiment of the present invention, a slide 23 is provided on the side wall of the limiting member 22, and an arc-shaped slide groove 14 adapted to the slide 23 is provided on the inner wall of the arc-shaped opening cavity 11, and the slide 23 is slidably set in the arc-shaped slide groove 14 to limit the moving position of the arc-shaped screen 40.

[0050] Specifically, by providing a slide 23 and a slide groove that cooperate with each other, the friction and resistance during the movement of the arc screen 40 are reduced, and the shaking and deviation of the arc screen 40 are limited, so that the limiter 22 can slide smoothly along the slide groove, and the arc screen 40 always remains within the designed running path to prevent screening failure or equipment failure due to loss of position, thereby ensuring the accuracy and stability of the screening operation, reducing the problem of feces and urine scattering caused by shaking during the screening process, and ensuring that feces and urine can be stably dumped into the excretion port 12 to avoid polluting the surrounding environment.

[0051] like Figure 4As shown, in an optional embodiment of the present invention, an arcuate boss 24 matching the shape of the arcuate screen 40 is provided on the opposite side walls of the swing member 21 and the limit member 22, and the bottom of the arcuate screen 40 can be detachably provided on the arcuate boss 24.

[0052] Specifically, since the curved screen 40 needs to withstand the resistance from cat litter and feces and urine, as well as the effect of self-gravity during the defecation and urination screening process. By setting the bottom of the curved screen 40 on the curved boss 24, sufficient and stable support points can be provided for the curved screen 40 to ensure that it can still obtain sufficient load-bearing support during the lifting and flipping process, avoiding deformation or damage due to uneven force. Such support points help to disperse the pressure of the curved screen 40 during use and reduce the risk of damage that may occur during long-term use. At the same time, the design of the curved boss 24 can also effectively reduce the friction between the curved screen 40 and other components, and improve the stability of the movement of the screen. This allows the screen to be screened, lifted and flipped smoothly, avoiding movement jams or instability caused by excessive or uneven friction.

[0053] like Figure 6 and Figure 7 As shown, in an optional embodiment of the present invention, the support seat 20 also includes a plurality of support rods 25, both ends of the support rods 25 are respectively fixed on the arc-shaped boss 24, the bottom of the arc-shaped screen 40 is detachably arranged on the support rods 25, and the density of the support rods 25 gradually decreases from one side of the discharge port 12 to the other side away from the discharge port 12; or, the support rods 25 are evenly arranged on the arc-shaped boss 24.

[0054] Specifically, during the screening process, as the arc-shaped screen 40 flips toward the discharge port 12, the side close to the discharge port 12 needs to withstand greater pressure, including the gravity of cat litter and feces and the self-weight of the screen itself. By setting a higher density of support rods 25 on one side of the discharge port 12 and reducing the number of support rods 25 on the side away from the discharge port 12, the amount of material used can be reduced, the manufacturing cost can be reduced, and the weight distribution of the device can be optimized to improve the overall economy and design rationality while ensuring the load-bearing requirements. The arrangement design of the support rods 25 can effectively support the arc-shaped screen 40 to prevent it from shaking or deflecting due to insufficient support during the flipping and screening process. The evenly arranged support rods 25 provide an overall consistent support force, allowing the screen to remain stable when moving and flipping, further improving the smoothness and cleaning effect of the screening process.

[0055] Among them, the optional embodiments of the present invention provide two arrangement methods (decreasing density or uniform distribution), and the design of the support rod 25 can be flexibly adjusted according to the actual application requirements. For example, when the cat litter box needs to handle a large weight of cat litter or feces, a decreasing density design can be used to enhance the pressure-bearing capacity; while for lighter loads, the uniformly distributed support rod 25 design can meet basic needs while simplifying the structure. In short, the design of the support rod 25 density gradually decreasing or uniformly distributed from one side of the discharge port 12 reasonably responds to the force requirements during the screening process, which not only ensures the pressure-bearing capacity and stability of the device, but also optimizes the material usage and structural performance, thereby significantly improving the practicality and reliability of the equipment.

[0056] like Figure 4 As shown, in an optional embodiment of the present invention, a driver 30 is included, and the driver 30 includes a first motor 31 for driving the swing member 21 to rotate and a second motor 32 for driving the arc screen 40 to rotate. The first motor 31 is arranged on the inner wall of the arc-shaped opening cavity 11 and is connected to the swing member 21. The second motor 32 is arranged on the swing member 21 and is connected to the arc screen 40.

[0057] Specifically, by setting up two independent motors, the automation level of the system is further improved. The first motor 31 can control the rotation range of the swing member 21 according to demand, thereby changing the motion trajectory of the screen; the second motor 32 controls the rotation and flipping of the arc screen 40 as needed. Such a motor configuration enables the equipment to autonomously perform screening, lifting, flipping and other tasks, greatly reducing the burden of manual operation and improving the intelligence level of the equipment. The independent driving mode of the first motor 31 and the second motor 32 allows different torques and speeds to be applied to each part, so that fine-tuning can be performed when necessary to avoid damage to components or unsmooth operation due to mismatched speed or torque. For example, when the arc screen 40 flips, the second motor 32 can adjust the speed to ensure the smooth flipping of the arc screen 40, while the first motor 31 controls the rotation of the swing member 21 to adapt to the movement requirements of the arc screen 40.

[0058] It should be noted that, by properly configuring and matching the motor power, the drive system can provide sufficient power as needed, ensuring the normal operation of the curved screen 40 while avoiding excessive energy consumption. The independent drive design can more flexibly adjust the working parameters, thereby improving energy utilization efficiency and achieving more energy-saving operation.

[0059] like Figure 4 As shown, in an optional embodiment of the present invention, the driver 30 also includes a vibration motor 33 and a rotating shaft, one end of the rotating shaft is connected to the second motor 32, and the other end is rotatably set on the limit member 22, and one end of the arc screen 40 close to the discharge outlet 12 is set on the rotating shaft, and the other end is fixedly connected to the vibration motor 33.

[0060] Specifically, one end of the arc screen 40 close to the discharge port 12 is arranged on the rotating shaft, and the arc screen 40 rotates with the end as the center. The movement of the arc screen 40 is mainly concentrated in a small range, avoiding the need to move the screen significantly, reducing the movement range of the screen, saving the operating space, and is particularly suitable for arc-shaped openings 11 with limited space. The exciting force provided by the vibration motor 33 can generate continuous micro-vibration when working, so that the arc screen 40 generates a certain vibration during the process of flipping and dumping feces and urine, which can not only promote the separation of cat litter and feces and urine, but also effectively help the feces and urine to roll into the discharge port 12 as quickly and thoroughly as possible. The effect of vibration ensures that even relatively sticky feces and urine can be discharged smoothly, improving the screening efficiency and cleaning effect. This design enables the equipment to complete the work more automatically during the screening process without manual intervention, and the addition of the vibration motor 33 further improves the overall work efficiency and automation. By accurately controlling the vibration intensity and rotation rate, it can ensure that feces and urine are discharged quickly and efficiently, reducing the waiting time of the cleaning process.

[0061] In order to prevent the premature start of the vibration motor 33 from causing the feces and urine in the screening process to fall back into the cat litter before the dumping process is completely entered, in the design of the optional embodiment of the present invention, the vibration motor 33 is usually started during the feces and urine dumping stage of the arc screen 40. This design effectively ensures that the screened feces and urine can be smoothly discharged into the discharge port 12 during the flipping process, and will not cause the feces and urine to roll back into the cat litter again due to premature vibration, thereby affecting the screening effect and cleaning efficiency. Specifically, when the arc screen 40 begins to flip toward the discharge port 12 and approaches the dumping stage, the vibration motor 33 starts working, and by providing appropriate agitation force, it ensures that the screened feces and urine can be completely discharged into the discharge port 12. When the dumping is completed, the vibration motor 33 stops working immediately to avoid unnecessary interference with the subsequent operations of the cat litter and feces and urine.

[0062] It should be noted that in an optional embodiment of the present invention, for the case of hard feces and urine, it is also possible to choose to turn on the vibration motor 33 during the cat litter screening stage. This design can effectively accelerate the shaking of cat litter from the arc screen 40, avoid excessive adhesion of feces and cat litter to the surface of the screen, and improve screening efficiency. The specific start-up timing can be flexibly adjusted according to different application scenarios. For example, in the case of hard feces and urine, the vibration motor 33 can be enabled in the cat litter screening stage; and for the case of soft feces and urine or strong adhesion, it is possible to choose to start the vibration motor 33 during the feces dumping stage to ensure that the feces and urine can be smoothly discharged into the discharge port 12 and reduce the situation of reflux into the cat litter. By flexibly adjusting the start-up timing of the vibration motor 33, the screening effect can be optimized according to different cat litter and feces and urine states, ensuring the efficient cleaning function of the equipment in various scenarios and improving the user experience.

[0063] like Figure 4-8 As shown, in an optional embodiment of the present invention, a waste bin 15 connected to the drain port 12 and a drain bin cover 13 adapted to the drain port 12 are provided on the base 10, the drain bin cover 13 is hinged on the drain port 12, and the swing member 21 is drivingly connected to the drain bin cover 13 for controlling the drain bin cover 13 to open and close the drain port 12.

[0064] Specifically, the waste bin 15 effectively provides a collection space for the screened feces and urine, and can collect and store the excrement in an orderly manner, avoiding the situation where the feces and urine are scattered around or cannot be centrally processed. This design makes the cat litter cleaning work more efficient and hygienic, and avoids the occurrence of secondary pollution. And through the cooperation of the excretion bin cover 13, the waste bin 15 can remain sealed when the feces and urine are not dumped, keeping the surrounding environment fresh, especially suitable for use in a home environment, reducing the odor problem generated during the cleaning process, and improving the user's comfort.

[0065] Among them, the driving connection between the swing member 21 and the excretion bin cover 13 realizes the automatic control of the excretion bin cover 13. When the arc screen 40 completes the screening and dumps the feces and urine, the excretion bin cover 13 can be automatically opened or closed to avoid manual intervention. This not only improves the cleaning efficiency, but also makes the entire cleaning process simpler and smarter. The opening method of the excretion bin cover 13 may include a variety of methods, such as connecting rod driving to open the excretion bin cover 13, motor single control method to directly open the excretion bin cover 13 and solenoid valve control method, etc. Different opening methods provide a variety of feasible solutions, and the most suitable method can be selected according to different application requirements. Whether it is connecting rod drive, motor single control, air pressure drive, or solenoid valve control, the opening and closing function of the excretion bin cover 13 can be effectively realized, thereby improving the efficiency and automation of cat litter cleaning, enhancing user experience, and ensuring that feces and urine can be dumped into the waste bin 15 in a timely and safe manner.

[0066] At the same time, in order to improve the automation level of the automatic cat litter box screening device and ensure that the cat litter can be replenished in time when it is reduced during use, a cat litter storage bin 16 is also provided on the base 10. The storage bin is connected to the arc-shaped opening 11 through a cat litter input port 17, and the cat litter input port 17 runs through the side wall of the cat litter storage bin 16. A cat litter bin cover 18 is hinged on the cat litter input port 17, and the design of the cat litter bin cover 18 can be adapted to the connection mode of the swinging member 21 of the excretion bin cover 13. In this way, the cat litter bin cover 18 can be opened and closed flexibly to ensure the timely replenishment of cat litter, thereby improving the automation level of the device and optimizing the user experience.

[0067] In addition, a detachable plastic film 19 is adhered to the bottom surface of the arc-shaped open cavity 11. When the cat litter in the arc-shaped open cavity 11 can no longer be used and the discarded cat litter needs to be scrapped, it is only necessary to remove the plastic film 19 and pack the discarded cat litter for disposal. This can effectively prevent feces and urine from contaminating the inner wall of the arc-shaped open cavity 11 and is convenient for users to clean.

[0068] like Fig. 9 As shown, in an optional embodiment of the present invention, before the arc-shaped screen 40 reaches the discharge port 12, the inclination angle of the arc-shaped screen 40 to the horizontal direction ranges from 0° to 5°.

[0069] Specifically, the curved screen 40 maintains a slight inclination of 0-5° with the horizontal direction, which helps to ensure stability during the screening process. Such an inclination range can effectively prevent excessive tilting or unstable movement during the screening process. The slight inclination of the curved screen 40 can prevent the feces and urine after screening from rolling back into the cat litter when the screen reaches the discharge port 12, ensuring that the screened materials (such as cat litter and feces and urine) pass through the screen smoothly without obstruction. In summary, by setting the inclination range of the curved screen 40 to 0-5° with the horizontal direction, the stability and efficiency of the screening system can be significantly improved, the reflux of feces and urine and the back and forth rolling of feces and urine can be reduced, the possibility of feces and urine rubbing against the curved screen 40 can be reduced, and the working path of the curved screen 40 can be optimized, thereby improving the overall effect of the cat litter cleaning process and ensuring a more efficient and clean user experience.

[0070] It should be noted that, in order to reduce the resistance of the curved screen 40 in the process of entering and exiting the cat litter, the end of the curved screen 40 close to the discharge port 12 and the end away from the discharge port 12 are usually designed as blade-like structures. This design can effectively reduce the friction of the screen when it moves in the cat litter, ensure a smoother screening process, reduce disturbance to the cat litter, and improve the working efficiency and cleaning effect of the device.

[0071] like Figure 9-11As shown, the automatic cat litter box screening device provided by the embodiment of the present invention can be applied to various work scenarios such as home pet care, pet shops, and animal shelters, providing users with an efficient, convenient, automated, and clean cat litter cleaning device. When using the automatic cat litter box screening device, the user can realize the dumping of feces and urine and effective isolation of odor by controlling the flipping of the arc-shaped screen 40. Its actual working method includes the following steps: the first is the screening operation, in which the swinging member 21 swings on the inner wall of the arc-shaped opening cavity 11 to drive the arc-shaped screen 40 to rotate so that it moves and lifts along the inner wall of the arc-shaped opening cavity 11, and the feces and urine in the cat litter are lifted and screened out, and the arc-shaped screen 40 will take the rotation axis set on the side close to the discharge port 12 as the rotation center, and slowly flip in the direction close to the discharge port 12, maintaining its relatively horizontal position to prevent the arc-shaped screen 40 from tilting excessively and causing the screened feces and urine to roll back; the second is the dumping operation, in which when the rotation axis of the flipped arc-shaped screen 40 reaches the discharge port 12, the swinging member 21 stops rotating, leaving enough dumping time, and the arc-shaped screen 40 is turned according to its original The arc screen 40 is flipped at a large angle in the direction, and the vibration motor 33 is started to provide an exciting force to the arc screen 40 to make it vibrate, so that the feces and urine roll into the discharge port 12 by inertia, thereby completing the effective dumping operation of feces and urine; the third is the reset operation. After the feces and urine are dumped, the arc screen 40 will flip back to the discharge port 12, and at the same time, the support seat 20 will continue to drive the arc screen 40 to continue to rotate in the original direction, so that the arc screen 40 is higher than the cat litter storage cut-off line to prevent the arc screen 40 from being blocked from contacting the cat litter when resetting, and then the support seat 20 drives the arc screen 40 to move toward the bottom of the arc-shaped opening 11, so that the arc screen 40 is re-buried in the cat litter at the bottom, which can not only effectively isolate the residual feces and urine and avoid the generation of odor, but also use the resistance of the cat litter to further clean the feces adhering to the surface of the arc screen 40, completing the whole process of cat litter cleaning.

[0072] The lifting and screening design of the arc-shaped screen 40 can effectively avoid squeezing of feces and urine, and reduce the adhesion of feces and urine to the screen, thereby ensuring that the feces and urine are cleaned up, maintaining the hygiene of the device, and ensuring health. The entire cleaning process is highly automated, reducing manual intervention, and can significantly improve the cleaning efficiency of the cat litter box, providing great convenience for users, meeting the needs of modern families for smart pet products, and has broad application prospects.

[0073] It should be noted that the cat litter cut-off line refers to the highest point position of the cat litter in the arc-shaped opening cavity 11 when it is stacked in a flat state. Usually, during the use of cat litter, the cat litter will be leveled to ensure that the surface of the cat litter is flat and uniform, and the cat litter cut-off line is the maximum height plane of the cat litter accumulation. When the arc screen 40 is reset, its height is required to be higher than the cat litter cut-off line, which can effectively avoid the arc screen 40 from directly contacting the cat litter during the reset process. If the arc screen 40 contacts the cat litter during the reset, it may encounter greater resistance, resulting in unsuccessful reset, or even unable to return to the original position completely. By setting the cat litter cut-off line, the reset process of the arc screen 40 is smoother, ensuring that the screen can be accurately reset. In addition, the setting of the cat litter cut-off line can clearly identify the use of the cat litter. When the cat litter usage is close to or below the cut-off line, the user can replenish the cat litter from the cat litter storage bin 16 in time through this visual prompt, maintain the use effect of the cat litter box, and ensure that the cat uses the cat litter box in a clean environment.

[0074] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. It is particularly pointed out that for those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. An automatic cat litter box screening device, characterized in that: The invention comprises a base, a support base and an arc-shaped screen, wherein the base is provided with an arc-shaped opening cavity for placing cat litter and a discharge port penetrating the inner wall of the arc-shaped opening cavity, the support base is rotatably arranged on the inner wall of the arc-shaped opening cavity adjacent to the discharge port, the rotation fulcrum of the support base is located at the center of the arc-shaped opening cavity, the arc-shaped screen is rotatably arranged on the side wall of the support base, the arc-shaped screen is adapted to the shape of the arc-shaped opening cavity, and the arc-shaped screen is located at the bottom of the arc-shaped opening cavity, the support base can drive the arc-shaped screen to move along the inner wall of the arc-shaped opening cavity, the discharge port is located on the moving path of the arc-shaped screen, and when the support base rotates to drive the arc-shaped screen to move, the arc-shaped screen will also gradually flip in the direction close to the discharge port so as to pour the feces and urine screened out of the cat litter into the discharge port.

2. The automatic cat litter box screening device according to claim 1, characterized in that: The support seat includes a swinging member rotatably arranged on the inner wall of the arc-shaped opening cavity and a limiting member slidably arranged on the inner wall of the other side of the arc-shaped opening cavity relative to the swinging member. The two sides of the arc-shaped screen are respectively rotatably connected to the swinging member and the limiting member. The swinging member is used to drive the arc-shaped screen and the limiting member to move, and the sliding path of the limiting member is the same as the moving path of the arc-shaped screen.

3. The automatic cat litter box screening device according to claim 2, characterized in that: A slide is arranged on the side wall of the position-limiting member, an arc-shaped slide groove matching the slide is arranged on the inner wall of the arc-shaped opening cavity, and the slide is slidably arranged in the arc-shaped slide groove to limit the moving position of the arc-shaped screen.

4. The automatic cat litter box screening device according to claim 2, characterized in that: An arc-shaped boss matched with the shape of the arc-shaped screen is arranged on one side wall opposite to the swinging member and the limiting member, and the bottom of the arc-shaped screen can be detachably arranged on the arc-shaped boss.

5. The automatic cat litter box screening device according to claim 3, characterized in that: The support seat also includes a plurality of support rods, both ends of which are respectively fixed on the arc-shaped bosses, the bottom of the arc-shaped screen can be detachably arranged on the support rods, and the density of the support rods gradually decreases from one side of the discharge port to the other side away from the discharge port; or, the support rods are evenly arranged on the arc-shaped bosses.

6. The automatic cat litter box screening device according to claim 2, characterized in that: It also includes a driver, which includes a first motor for driving the swing member to rotate and a second motor for driving the arc-shaped screen to rotate. The first motor is arranged on the inner wall of the arc-shaped opening cavity and connected to the swing member, and the second motor is arranged on the swing member and connected to the arc-shaped screen.

7. The automatic cat litter box screening device according to claim 6, characterized in that: The driver also includes a vibration motor and a rotating shaft, one end of the rotating shaft is connected to the second motor, and the other end is rotatably set on the limiter, and one end of the arc screen close to the discharge port is set on the rotating shaft, and the other end is fixedly connected to the vibration motor.

8. The automatic cat litter box screening device according to claim 2, characterized in that: The base is provided with a waste bin connected to the discharge port and a discharge bin cover adapted to the discharge port, the discharge bin cover is hinged on the discharge port, and the swing member is drivingly connected to the discharge bin cover for controlling the discharge bin cover to open and close the discharge port.

9. The automatic cat litter box screening device according to claim 1, characterized in that: Before the arc-shaped screen reaches the discharge port, the inclination angle of the arc-shaped screen to the horizontal direction ranges from 0 to 5 degrees.

10. An automatic cat litter box screening method, characterized in that: Screening is performed by the automatic cat litter box screening device according to any one of claims 1 to 9, comprising: The support seat drives the arc-shaped screen to move along the inner wall of the arc-shaped opening cavity, and the arc-shaped screen flips toward the discharge port to screen the feces and urine out of the cat litter; After the arc-shaped screen moves to the discharge port, the support seat stops rotating, and the arc-shaped screen continues to flip in the original direction to pour the feces and urine into the discharge port; After the urine and feces are dumped, the support seat drives the arc-shaped screen to continue to move in the original direction, and the arc-shaped screen flips back to the discharge port and resets; The arc-shaped screen is higher than the cat litter storage cut-off line, and after the arc-shaped screen is reset, the support seat drives the arc-shaped screen to move back to the bottom of the open cavity.

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