Pet sand basin

Abstract

The utility model discloses a pet sand basin which comprises a main machine, a sand bin and an excrement collecting bin. The sand bin is arranged at the top of the main machine, and the excrement collecting bin is arranged at the bottom of the main machine; the main machine comprises a shell, a first driving mechanism, a second driving mechanism and a movable door; the outer shell comprises an upper shell body and a lower shell body which are connected, the first driving mechanism is connected with the sand silo and used for driving the sand silo to rotate, the upper shell body is provided with a first open hole, the lower shell body is provided with a second open hole, the movable door is arranged between the first open hole and the second open hole, and the second driving mechanism is connected with the movable door and used for driving the movable door to move. A first sealing ring with the inner ring size larger than that of the first open hole is fixed to the bottom of the upper shell, a second sealing ring with the inner ring size larger than that of the second open hole is fixed to the top of the lower shell, the bottom of the first sealing ring abuts against the top face of the movable door all the time, and the top of the second sealing ring abuts against the bottom face of the movable door all the time.

Description

Technical Field

[0001] This utility model relates to the technical field of pet litter boxes, and more particularly to a pet litter box. Background Technology

[0002] As people's living standards improve, their demands for spiritual well-being also increase. More and more people are keeping pets (such as cats, rabbits, or dogs), leading to a growing demand for smart pet litter boxes that collect feces and urine. Taking a cat litter box as an example, it's used with cat litter as a toilet for cats. The litter compartment holds the litter; the cat enters it to relieve itself. After the cat finishes and leaves, the main unit rotates the litter compartment to a designated position, causing the litter clumps containing feces and urine to fall through an opening in the main unit's casing into the waste collection compartment below. Currently, the main unit has at least one movable door at the opening. After the litter compartment emptys the litter clumps into the waste collection compartment and resets, the movable door closes to cover the opening, preventing odors from escaping and thus preventing smells from spreading outwards. However, most current litter boxes do not have a sealing ring between the outer shell and the sliding door, resulting in gaps between them. Odors from the litter box can then diffuse outwards through these gaps, and although the diffusion efficiency is low, it can still cause a noticeable odor in the surrounding environment over time. A small number of litter boxes do have a sealing ring between the outer shell and the sliding door; however, these existing rings only guarantee a tight seal when the sliding door is closed. When the sliding door is open, fine sand can scatter around it as litter is poured into the collection chamber. This airborne sand can enter the litter box through the gaps between the outer shell and the sliding door, causing faster wear and even jamming of the internal drive mechanism. Therefore, existing pet litter boxes need improvement. Utility Model Content

[0003] This utility model provides a pet litter box, which mainly solves the technical problem of how to keep the gap between the outer shell and the movable door sealed during the operation of the main unit.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A pet litter box includes a main unit, a litter bin, and a waste collection bin; the litter bin is located on the top of the main unit, and the waste collection bin is located on the bottom of the main unit.

[0006] The main unit includes a housing, a first drive mechanism, a second drive mechanism, and a movable door. The housing includes an upper shell and a lower shell connected together, which are fixedly connected and together form a receiving cavity. The first drive mechanism and the second drive mechanism are both housed in the receiving cavity. The first drive mechanism is connected to the sand chamber and is used to drive the sand chamber to rotate. The upper shell has a first longitudinal through-hole at the position corresponding to the feces collection chamber, and the lower shell has a second longitudinal through-hole at the position corresponding to the feces collection chamber. The movable door is located between the first through-hole and the second through-hole. The second drive mechanism is connected to the movable door and is used to drive the movable door to block between the first through-hole and the second through-hole or to move laterally away so that the first through-hole and the second through-hole are longitudinally connected. A first sealing ring with an inner ring size larger than the first through-hole is fixed at the bottom of the upper shell, and a second sealing ring with an inner ring size larger than the second through-hole is fixed at the top of the lower shell. During the movement of the movable door driven by the second drive mechanism, the bottom of the first sealing ring always abuts against the top surface of the movable door, and the top of the second sealing ring always abuts against the bottom surface of the movable door.

[0007] In one technical solution, the bottom of the upper shell is provided with a first fixing groove around the first opening, and the top of the lower shell is provided with a second fixing groove around the second opening. Both the first sealing ring and the second sealing ring include a main body and a weak part. The thickness of the weak part is less than that of the main body. The main body of the first sealing ring is fixed in the first fixing groove, and the weak part of the first sealing ring abuts against the top surface of the movable door. The main body of the second sealing ring is fixed in the second fixing groove, and the weak part of the second sealing ring abuts against the bottom surface of the movable door.

[0008] In one of the technical solutions, the thickness of the weak part is between 0.5mm and 1mm.

[0009] In one of the technical solutions, the first drive mechanism includes a first motor and a drive gear connected together. The drive gear protrudes upward from the upper shell. A gear part is provided on the outer wall of the sand chamber. The drive gear meshes with the gear part. A plurality of rotatable rollers are protruding from the top of the upper shell. The plurality of rollers together support the sand chamber.

[0010] In one of the technical solutions, the host includes two movable doors, and the second drive mechanism is connected to both movable doors at the same time and is used to drive the two movable doors to move towards each other or away from each other; when the two movable doors approach each other to block between the first opening and the second opening, the bottom of the first sealing ring abuts against the top surface of the two movable doors at the same time, and the top of the second sealing ring abuts against the bottom surface of the two movable doors at the same time.

[0011] In one of the technical solutions, a strip seal is fixed to one end of one of the movable doors facing the other movable door. When the two movable doors approach each other to block the space between the first opening and the second opening, the two movable doors together compress the strip seal.

[0012] In one of the technical solutions, one of the movable doors has a protruding strip at one end facing the other movable door, and the strip seal has a slot that engages with the protruding strip. The other movable door has a protrusion at one end facing the strip seal, and the protrusion of the protrusion points towards the protruding strip.

[0013] In one of the technical solutions, the second drive mechanism includes a second motor, a rotating gear, a first rack, and a second rack;

[0014] The second motor is connected to the rotating gear, the first rack is connected to one of the movable doors, and the second rack is connected to the other movable door. The first rack and the second rack are respectively located on opposite sides of the rotating gear and are both meshed with the rotating gear. The two movable doors are arranged to move towards each other or away from each other in a first direction, and the first rack and the second rack both extend along the first direction.

[0015] In one of the technical solutions, two guide rods extending along the first direction are fixed at the bottom of the upper shell, and the two movable doors are slidably connected to the two guide rods respectively.

[0016] In one of the technical solutions, a detachable deodorizing box for filling with deodorizing substances is provided at the bottom of the lower shell and at the position above the collection chamber.

[0017] Compared with the prior art, the pet litter box provided by this utility model has at least the following beneficial effects:

[0018] This design divides the outer casing into an upper and lower shell. This design facilitates the installation of the first and second drive mechanisms inside the casing. Based on this, a first opening is required on the upper shell, and a second opening is required on the lower shell. When sand clumps fall downwards from the sand chamber, they will pass through the first and second openings before falling into the lower waste collection chamber. The movable door is positioned between the first and second openings. A first sealing ring larger than the first opening is also provided at the bottom of the upper shell, and a second sealing ring larger than the second opening is provided at the top of the lower shell. Furthermore, as the movable door gradually opens or closes under the drive of the second drive mechanism, the bottom of the first sealing ring remains in contact with the movable door. With the top surfaces abutting each other, the top of the second sealing ring always abuts against the bottom surface of the movable door. Through this design, as the movable door gradually opens or closes, the gap between the upper shell and the top surface of the movable door can always be blocked by the first sealing ring, and the gap between the lower shell and the bottom surface of the movable door can always be blocked by the second sealing ring. This prevents odorous gases in the waste collection chamber from escaping from the gap between the outer shell and the movable door, and also prevents fine sand around the movable door from entering the main unit from the gap between the outer shell and the movable door. This solves the problem of rapid wear or jamming of the first and second drive mechanisms, and improves the service life of the first and second drive mechanisms. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a pet litter box provided in an embodiment of this application;

[0021] Figure 2 An exploded view of the structure of a pet litter box provided in an embodiment of this application;

[0022] Figure 3 This application provides an embodiment of the internal structure diagram of a pet litter box after the litter compartment has been concealed.

[0023] Figure 4 for Figure 3 A magnified view of a section at point A in the middle;

[0024] Figure 5 for Figure 3 A magnified view of a section at point B in the middle;

[0025] Figure 6 An exploded view of the host structure provided in an embodiment of this application;

[0026] Figure 7 An exploded view of the host computer provided in an embodiment of this application from another angle;

[0027] Figure 8 for Figure 7 A magnified view of a section at point C.

[0028] Figure label:

[0029] 1. Sand chamber; 11. Main shell; 114. Gear section; 122. Baffle plate; 123. Filter screen;

[0030] 2. Main unit; 21. Outer shell; 211. Upper shell; 2111. First opening; 2112. First fixing groove; 212. Lower shell; 2121. Second opening; 2122. Second fixing groove; 213. Receiving cavity; 22. First drive mechanism; 221. First motor; 222. Drive gear; 23. Second drive mechanism; 231. Second motor; 232. Rotating gear; 233. First rack; 234. Second rack; 235. Guide rod; 24. Movable door; 241. Protrusion; 242. Protrusion; 25. Roller; 26. First sealing ring; 261. Main body; 262. Weak part; 27. Second sealing ring; 28. Strip seal; 281. Slot; 29. ​​Deodorizing box; 3. Waste collection chamber; 31. Waste collection trough. Detailed Implementation

[0031] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0032] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0033] It should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0035] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0036] Please refer to the following: Figures 1 to 3 as well as Figure 6 This utility model provides a pet litter box, mainly including a litter box 1, a main unit 2, and a waste collection box 3. The litter box 1 is located on the top of the main unit 2, and the waste collection box 3 is located at the bottom of the main unit 2. The litter box 1 specifically includes a main shell 11, a guide plate 122, and a filter screen 123. The guide plate 122 and the filter screen 123 are both fixed inside the main shell 11, and the filter screen 123 is located below the guide plate 122. The main unit 2 specifically includes a shell 21, a first drive mechanism 22, a second drive mechanism 23, and a movable door 24. The first drive mechanism 22 and the second drive mechanism 23 are both housed inside the shell 21. The movable door 24 is located between the litter box 1 and the waste collection box 3. The first drive mechanism 22 is connected to the litter box 1 and is used to drive the litter box 1 to rotate. The second drive mechanism 23 is connected to the movable door 24 and is used to drive the movable door 24 to close or open.

[0037] Taking cat use as an example, after the cat finishes urinating or defecating in the litter box 1, the feces and urine will mix with the litter to form a litter clump. After the cat leaves, the first drive mechanism 22 drives the litter box 1 to rotate. During the rotation of the litter box 1, the filter screen 123 will rotate with the litter clump, while other cat litter that has not clumped will not be carried away by the filter screen 123 and will always remain at the bottom of the litter box 1 due to its own gravity. When the litter box 1 rotates to the specified angle, the litter clump will pass through the outer shell 21 along the surface of the guide plate 122 due to its own weight and finally slide down into the collection tank 31 of the collection tank 3 below (at this time, the movable door 24 is in the open state under the drive of the second drive mechanism 23). Then, the first drive mechanism 22 on the main unit 2 drives the litter box 1 to return to the initial position, and at the same time, the movable door 24 is closed under the drive of the second drive mechanism 23 to cover the collection tank 3 and prevent the odor in the collection tank 3 from overflowing. At this time, the automatic cleaning function of cat feces and urine is completed.

[0038] Please refer to the following: Figures 1 to 3 as well as Figure 6 and Figure 7The first drive mechanism 22 preferably includes a first motor 221 and a drive gear 222 connected together. The first motor 221 is fixed inside the outer casing 21, and the drive gear 222 protrudes upward relative to the outer casing 21. A gear portion 114 is provided on the outer wall of the main casing 11 of the sand chamber 1. This gear portion 114 meshes with the drive gear 222, so that when the drive gear 222 is driven by the first motor 221, it can drive the gear portion 114 to rotate, thereby realizing the function of driving the entire sand chamber 1 to rotate. In addition, multiple rotatable rollers 25 are protruding from the top of the outer casing 21 of the main unit 2. The multiple rollers 25 jointly support the sand chamber 1. During the rotation of the sand chamber 1, it will drive the rollers 25 below to rotate, so as to solve the problem of large friction between the sand chamber 1 and the main unit 2 during rotation.

[0039] Please refer to the following: Figures 1 to 4 as well as Figure 6 and Figure 7 The outer shell 21 specifically includes an upper shell 211 and a lower shell 212. The upper shell 211 and the lower shell 212 are fixedly connected and together form a receiving cavity 213. The first driving mechanism 22 and the second driving mechanism 23 mentioned above are both housed in this receiving cavity 213. The upper shell 211 is provided with a longitudinally penetrating first opening 2111 at the position corresponding to the collection chamber 3. The lower shell 212 is provided with a longitudinally penetrating second opening 2121 at the position corresponding to the collection chamber 3. The movable door 24 mentioned above is disposed between the first opening 2111 and the second opening 2121. The second driving mechanism 23 mentioned above is used to drive the movable door 24 to block between the first opening 2111 and the second opening 2121 or to move laterally away so that the first opening 2111 and the second opening 2121 are longitudinally connected. When the movable door 24 moves laterally away, the sand clumps in the sand chamber 1 actually pass through the first opening 2111 and the second opening 2121 in sequence before falling into the feces collection chamber 3. When the movable door 24 blocks the space between the first opening 2111 and the second opening 2121, the odorous gas in the feces collection chamber 3 is blocked by the movable door 24 and has difficulty dissipating upwards into the outside air through the first opening 2111. More specifically, as... Figure 3 and Figure 4 As shown, the bottom of the upper shell 211 is fixed with a first sealing ring 26 whose inner ring size is larger than the first opening 2111, and the top of the lower shell 212 is fixed with a second sealing ring 27 whose inner ring size is larger than the second opening 2121. Moreover, during the movement of the movable door 24 under the drive of the second drive mechanism 23, the bottom of the first sealing ring 26 always abuts against the top surface of the movable door 24, and the top of the second sealing ring 27 always abuts against the bottom surface of the movable door 24.

[0040] Specifically, this design splits the outer shell 21 into an upper shell 211 and a lower shell 212. The upper shell 211 and the lower shell 212 are fixedly connected and together form a receiving cavity 213. This design facilitates the installation of the first drive mechanism 22 and the second drive mechanism 23 within the receiving cavity 213. Based on this, a first opening 2111 needs to be provided on the upper shell 211, and a second opening 2121 needs to be provided on the lower shell 212. In this design, the movable door 24 is positioned between the first opening 2111 and the second opening 2121. The aforementioned second drive mechanism 23 is actually used to drive the movable door 24 to block between the first opening 2111 and the second opening 2121 or to move laterally away so that the first opening 2111 and the second opening 2121 are longitudinally connected. Furthermore, this design also includes a first sealing ring 26, larger than the first opening 2111, at the bottom of the upper shell 211, and a second sealing ring 27, larger than the second opening 2121, at the top of the lower shell 212. During the movement of the movable door 24 under the drive of the second drive mechanism 23, the bottom of the first sealing ring 26 always abuts against the top surface of the movable door 24, and the top of the second sealing ring 27 always abuts against the bottom surface of the movable door 24. In other words, as the movable door 24 gradually opens or closes under the drive of the second drive mechanism 23, the top surfaces of the upper shell 211 and the movable door 24... The gap between the two parts can always be blocked by the first sealing ring 26, and the gap between the bottom surface of the lower shell 212 and the movable door 24 can always be blocked by the second sealing ring 27. This prevents the odorous gas in the collection chamber 3 from escaping outward from the gap between the outer shell 21 and the movable door 24. At the same time, the fine sand around the movable door 24 will not enter the main unit 2 from the gap between the outer shell 21 and the movable door 24. This solves the problem of the first drive mechanism 22 and the second drive mechanism 23 wearing out quickly or getting stuck, and improves the service life of the first drive mechanism 22 and the second drive mechanism 23.

[0041] Please refer to the following: Figure 3 and Figure 4The bottom of the upper shell 211 is provided with a first fixing groove 2112 around the first opening 2111, and the top of the lower shell 212 is provided with a second fixing groove 2122 around the second opening 2121. The first sealing ring 26 and the second sealing ring 27 mentioned above are both silicone parts with good flexibility. The first sealing ring 26 and the second sealing ring 27 both include a main body 261 and a weak part 262. The thickness of the weak part 262 is less than that of the main body 261. The main body 261 of the first sealing ring 26 is fixed in the first fixing groove 2112, and the weak part 262 of the first sealing ring 26 abuts against the top surface of the movable door 24. The main body 261 of the second sealing ring 27 is fixed in the second fixing groove 2122, and the weak part 262 of the second sealing ring 27 abuts against the bottom surface of the movable door 24. By designing the first sealing ring 26 and the second sealing ring 27 in this way, the first sealing ring 26 is reliably fixed to the upper shell 211 while its deformation capacity is improved. This reduces the resistance that the movable door 24 needs to overcome when moving while maintaining contact with the first sealing ring 26. Similarly, this design also ensures that the second sealing ring 27 is reliably fixed to the lower shell 212 while its deformation capacity is improved. This reduces the resistance that the movable door 24 needs to overcome when moving while maintaining contact with the second sealing ring 27, thus ensuring good sealing while allowing the movable door 24 to open or close reliably. The thickness D of the weak portion 262 is preferably between 0.5 mm and 1 mm.

[0042] Please refer to the following: Figures 2 to 4 as well as Figure 6 and Figure 7 In this embodiment, the host 2 preferably includes two movable doors 24. The second drive mechanism 23 mentioned above actually connects to the two movable doors 24 simultaneously and drives the two movable doors 24 to move towards each other or away from each other. In fact, the bottom of the first sealing ring 26 mentioned above abuts against the top surface of the two movable doors 24 simultaneously, and the top of the second sealing ring 27 mentioned above abuts against the bottom surface of the two movable doors 24 simultaneously. Compared with the single movable door 24 solution, the travel distance of each movable door 24 in this solution is shorter, which is beneficial to free up more space inside the pet litter box within a certain volume.

[0043] Please refer to the following: Figure 3 and Figure 5One of the movable doors 24 has a strip seal 28 fixed to one end facing the other movable door 24. When the two movable doors 24 are close to each other to block the gap between the first opening 2111 and the second opening 2121, the two movable doors 24 together compress the strip seal 28 to block the gap between the two movable doors 24, preventing the odor gas in the collection chamber 3 from escaping outward from the gap between the two movable doors 24. At the same time, the fine sand around the movable doors 24 will not enter the main unit 2 from the gap between the two movable doors 24. Preferably, one of the movable doors 24 has a protruding strip 241 at the end facing the other movable door 24, and the strip seal 28 is provided with a slot 281 that engages with the protruding strip 241. This design helps to improve the firmness of the strip seal 28 on the movable door 24. The other movable door 24 has a protrusion 242 at the end facing the strip seal 28, and the protrusion 242 is directed towards the protruding strip 241. The protrusion 242 and the protruding strip 241 are used together to compress the strip seal 28.

[0044] Please refer to the following: Figure 7 and Figure 8 The second drive mechanism 23 specifically includes a second motor 231, a rotating gear 232, a first rack 233, and a second rack 234. The second motor 231 is preferably fixed inside the upper housing 211 and is connected to the rotating gear 232. The first rack 233 is connected to one of the movable doors 24, and the second rack 234 is connected to the other movable door 24. The first rack 233 and the second rack 234 are located on opposite sides of the rotating gear 232 and mesh with it. If the two movable doors 24 move towards or away from each other in the first direction X, then both the first rack 233 and the second rack 234 extend along the first direction X. During operation, the second motor 231 drives the rotating gear 232 to rotate, which in turn drives the first rack 233 and the second rack 234 to move towards or away from each other, thus realizing the function of the two movable doors 24 moving towards or away from each other in the first direction X. Preferably, the bottom of the upper shell 211 is fixed with two guide rods 235, both extending along the first direction X, and the two movable doors 24 are slidably connected to the two guide rods 235 respectively, so as to improve the linear accuracy of the movement of the two movable doors 24 in the first direction X.

[0045] Please refer to the following: Figure 3 and Figure 7 A deodorizing box 29 is provided at the bottom of the lower shell 212 and above the collection chamber 3. This deodorizing box 29 is used to fill deodorizing substances to reduce the odor in the collection chamber 3. The deodorizing box 29 is detachable from the lower shell 212 so that users can replace the deodorizing substances themselves and improve the user experience.

[0046] The above are merely preferred embodiments of the present utility model, and only specifically describe the technical principles of the present utility model. These descriptions are only for explaining the principles of the present utility model and should not be construed as limiting the scope of protection of the present utility model in any way. Based on this explanation, any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model, as well as other specific embodiments of the present utility model that can be conceived by those skilled in the art without creative effort, should be included within the scope of protection of the present utility model.

Claims

1. A pet litter box, characterized in that, It includes a main unit, a sand chamber, and a fecal collection chamber; the sand chamber is located on top of the main unit, and the fecal collection chamber is located at the bottom of the main unit; The main unit includes a housing, a first drive mechanism, a second drive mechanism, and a movable door. The housing includes an upper shell and a lower shell connected together, which are fixedly connected and together form a receiving cavity. The first drive mechanism and the second drive mechanism are both housed in the receiving cavity. The first drive mechanism is connected to the sand chamber and is used to drive the sand chamber to rotate. The upper shell has a first longitudinal through-hole at the position corresponding to the feces collection chamber, and the lower shell has a second longitudinal through-hole at the position corresponding to the feces collection chamber. The movable door is located between the first through-hole and the second through-hole. The second drive mechanism is connected to the movable door and is used to drive the movable door to block between the first through-hole and the second through-hole or to move laterally away so that the first through-hole and the second through-hole are longitudinally connected. A first sealing ring with an inner ring size larger than the first through-hole is fixed at the bottom of the upper shell, and a second sealing ring with an inner ring size larger than the second through-hole is fixed at the top of the lower shell. During the movement of the movable door driven by the second drive mechanism, the bottom of the first sealing ring always abuts against the top surface of the movable door, and the top of the second sealing ring always abuts against the bottom surface of the movable door.

2. The pet litter box as described in claim 1, characterized in that, The bottom of the upper shell has a first fixing groove around the first opening, and the top of the lower shell has a second fixing groove around the second opening. Both the first sealing ring and the second sealing ring include a main body and a weak part. The thickness of the weak part is less than that of the main body. The main body of the first sealing ring is fixed in the first fixing groove, and the weak part of the first sealing ring abuts against the top surface of the movable door. The main body of the second sealing ring is fixed in the second fixing groove, and the weak part of the second sealing ring abuts against the bottom surface of the movable door.

3. The pet litter box as described in claim 2, characterized in that, The thickness of the weak part is between 0.5mm and 1mm.

4. The pet litter box as described in claim 1, characterized in that, The first drive mechanism includes a first motor and a drive gear connected together. A gear part is provided on the outer wall of the sand chamber. The drive gear meshes with the gear part. A plurality of rotatable rollers are protruding from the top of the upper shell. The plurality of rollers together support the sand chamber.

5. The pet litter box as described in claim 1, characterized in that, The host includes two movable doors. The second drive mechanism is connected to both movable doors and is used to drive the two movable doors to move towards each other or away from each other. The bottom of the first sealing ring abuts against the top surface of both movable doors, and the top of the second sealing ring abuts against the bottom surface of both movable doors.

6. The pet litter box as described in claim 5, characterized in that, One of the movable doors has a strip seal fixed to one end facing the other movable door. When the two movable doors move close to each other to block the space between the first opening and the second opening, the two movable doors together compress the strip seal.

7. The pet litter box as described in claim 6, characterized in that, One of the movable doors has a protruding strip at one end facing the other movable door, and the strip seal has a slot that engages with the protruding strip. The other movable door has a protrusion at one end facing the strip seal, and the protrusion of the protrusion points towards the protruding strip.

8. The pet litter box as described in claim 5, characterized in that, The second drive mechanism includes a second motor, a rotating gear, a first rack, and a second rack; The second motor is connected to the rotating gear, the first rack is connected to one of the movable doors, and the second rack is connected to the other movable door. The first rack and the second rack are respectively located on opposite sides of the rotating gear and are both meshed with the rotating gear. The two movable doors are arranged to move towards each other or away from each other in a first direction, and the first rack and the second rack both extend along the first direction.

9. The pet litter box as described in claim 8, characterized in that, The bottom of the upper shell is fixed with two guide rods that both extend along the first direction, and the two movable doors are slidably connected to the two guide rods respectively.

10. The pet litter box as described in claim 1, characterized in that, A removable deodorizing box for filling with deodorizing substances is provided at the bottom of the lower shell and above the collection chamber.

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