Device for separating pet waste and sand, and pet toilet

Abstract

The invention relates to a device for separating pet feces and sand, comprising a base, characterized in that a first conveying assembly is arranged on the base, the first conveying assembly being arranged horizontally, the upper part of the first conveying member being a first bearing area for placing the mixture of sand and feces, the two ends along the conveying direction being the front end and the rear end respectively, a sand screening bin having a bin wall with a sand dropping opening and a sieve area, wherein the sand dropping opening is located below the front end of the first conveying member and is arranged to allow the mixture falling from the first bearing area to enter the bin through the sand dropping opening and then fall to the sieve area, and a stirring member rotatably arranged in the sand screening bin for stirring the mixture falling into the bin and allowing the sand to leak through the sieve area. The invention also relates to a pet toilet using the device for separating pet feces and sand.

Description

Technical Field

[0001] This invention relates to pet products, specifically to a device for separating pet feces and sand, and also to a pet toilet using the aforementioned device for separating pet feces and sand. Background Technology

[0002] As people's living standards improve, pets, as man's best friend, have entered more and more families, bringing countless joys to people's lives. Pets such as cats, dogs, and birds all have the need to relieve themselves. Therefore, more and more pet toilets have appeared on the market.

[0003] Take a litter box as an example. A litter box, also known as a cat litter bowl, is a container for cats to excrete waste. When using it, cat litter is placed in the litter box. A trained cat defecates in the litter box, and the litter adheres to the feces, clumping them together and burying the feces. To reuse the litter that is not clumped with feces, the user needs to manually remove the clumps. This not only slows down the feces separation process but also causes unpleasant odors that affect the user's comfort.

[0004] To address the aforementioned issues, Chinese utility model patent ZL202123109845.9 (publication number CN216392543U) discloses a pet toilet, characterized by comprising: a roller with a first screen inside; and a waste container located at the lower part of the roller, with an opening at the top, and a water supply pipe and a sewage pipe connected to the waste container. As the roller rotates, the screen separates pet feces from cat litter within the roller, with the feces falling into the waste container. This pet toilet, by incorporating a screen within a rotatable roller, effectively improves the separation speed and user comfort during the feces separation process, allowing the screen to separate feces and cat litter as the roller rotates.

[0005] However, the above-mentioned pet toilets have the following shortcomings: ① To facilitate the rotation of the roller, the roller is usually designed with a spherical surface structure, such as sphere, ellipsoid, or cylinder, resulting in a small roller volume. Moreover, the screen inside the roller divides the inside of the roller into two spaces. One space serves as the litter holding space when separating cat litter and feces. This holding space is located to the side or above the pet when it defecates. The other space is the actual activity space for the pet. Both of these factors result in a small effective activity space for the pet inside the pet toilet. ② This pet toilet separates cat litter and feces by turning the roller so that the cat litter in the actual activity space of the pet falls through the mesh of the screen into the litter holding space. This method of feces separation requires multiple turnings of the roller to achieve a good separation effect, resulting in a long time consumption for feces separation. Summary of the Invention

[0006] The first technical problem to be solved by the present invention is to provide a device for separating pet feces and sand that improves the efficiency of feces separation, in light of the above-mentioned current state of the technology.

[0007] The second technical problem to be solved by the present invention is to provide a device for separating pet feces and sand that can increase the effective pet activity space, in view of the above-mentioned technical status quo.

[0008] The third technical problem to be solved by the present invention is to provide a pet toilet that uses the above-mentioned device for separating pet feces and sand, in view of the current state of the technology.

[0009] The technical solution adopted by the present invention to solve the first and second technical problems mentioned above is: a device for separating pet feces and sand, comprising:

[0010] Base;

[0011] Its characteristic is that the base is provided with:

[0012] The first conveying assembly is basically horizontally arranged, with the upper part of the first conveying component being a first bearing area for placing a mixture of sand and manure, and the two ends along the conveying direction being the front end and the rear end, respectively.

[0013] A sand screening bin has a sand drop outlet and a screen hole area on its wall. The sand drop outlet is located below the front end of the first conveyor and is arranged to allow the mixture falling from the first bearing area to enter the bin through the sand drop outlet and then fall into the screen hole area.

[0014] A stirring component is rotatably disposed within the sand screening chamber, used to stir the mixture falling into the chamber and cause the sand to pass through the screen opening area.

[0015] The device for separating pet feces and sand separates the pet's activity space from the feces separation space by using the first bearing area on the first conveyor as the pet's excretion area and setting up a sand sieve to receive the mixture of feces and sand. This reduces the restrictions imposed on the first conveyor by the sand sieve structure, allowing the first bearing area to be set larger, thus increasing the effective pet activity space. In addition, the sand sieve is equipped with a rotatable agitator inside, which agitates the mixture falling into the sieve, thereby causing the sand to vibrate and allowing it to fall through the mesh of the sieve area more quickly, accelerating the feces separation speed and improving the feces separation efficiency.

[0016] To facilitate the simultaneous discharge of separated feces from the sand screening chamber while sand and soil fall through, the sand screening chamber is rotatable about a rotation axis perpendicular to the conveying direction of the first conveyor. The sand discharge port and screen hole area are distributed circumferentially, and the sand screening chamber has at least two of the following states as it rotates:

[0017] In the first state, the sand drop outlet faces upward and is basically level with or lower than the first bearing area, and at least a portion of the screen hole area is located below the sand drop outlet.

[0018] In the second state, the sand discharge port faces downwards so that the feces in the sand screening chamber can fall through the sand discharge port.

[0019] To enable the sand sieving chamber to supplement the pet's activity space, the sand sieving chamber is cylindrical and has a closed area on its peripheral wall. This closed area is located circumferentially between the sand drop outlet and the sieve hole area. Furthermore, the sand sieving chamber has a third state as it rotates: the height of the closed area is higher than the sand drop outlet and the sieve hole area and is basically level with the first bearing area, thereby further increasing the effective pet activity space without increasing the size of the device.

[0020] Further design: the sand screening bin is cylindrical, and its central axis is the aforementioned rotation axis.

[0021] To facilitate the leakage of sand, the sand discharge port faces upward, and at least a portion of the sieve opening area is located below the sand discharge port.

[0022] In order to increase the movement range of the mixture, thereby improving the screening effect of the sand screening bin and to concentrate the feces, the agitator is a conveying screw, and one end of the agitator is rotatably connected to the sand screening bin, while the other end has a gap with the inner wall of the sand screening bin.

[0023] To accelerate the speed of the first conveying component in conveying the mixture, there are two sets of the first conveying components, which are located on both sides of the sand screening chamber, and the conveying directions of the two first conveying components are arranged opposite to each other.

[0024] To simplify the structure of the first conveying component, the first conveying component further includes a drive roller and a driven roller that are spaced apart along the conveying direction of the first conveyor. The drive roller is adjacent to the front end of the first conveyor, and the driven roller is adjacent to the rear end of the first conveyor. The first conveyor is a conveyor belt wound around the drive roller and the driven roller.

[0025] To facilitate the re-transportation of the leaked sand to the first conveyor, the base is also provided with a second conveyor assembly arranged in a basically vertical manner. The side of the second conveyor assembly facing the first conveyor assembly is a second bearing area for placing sand. The two ends along the conveying direction are the front end and the rear end, respectively. The front end of the second conveyor assembly is located directly above the first bearing area, and the rear end of the second conveyor assembly is located below one side of the sand screening bin.

[0026] To simplify the structure of the second conveying component, the second conveying component further includes a driving roller and a driven roller that are spaced apart along the conveying direction of the second conveyor. The driving roller is adjacent to the rear end of the second conveyor, and the driven roller is adjacent to the front end of the second conveyor. The second conveyor is a conveyor belt wound around the driving roller and the driven roller.

[0027] To facilitate the simultaneous movement of the first and second conveyors, the active roller and the active roller shaft are linked together, and the base is also provided with a first drive mechanism for driving the active roller and the active roller shaft to rotate, thereby making the device structure more compact.

[0028] To simplify the first drive mechanism, the first drive mechanism includes...

[0029] First motor;

[0030] The first gear is located on the output shaft of the first motor;

[0031] The second gear is mounted on the drive roller shaft and meshes with the first gear;

[0032] The third gear is coaxially arranged with the first gear;

[0033] The fourth gear is mounted on the drive roller;

[0034] The belt is wound around the third and fourth gears.

[0035] The technical solution adopted by the present invention to solve the third technical problem mentioned above is: a pet toilet, characterized in that: it uses the device for separating pet feces and sand as described above.

[0036] Compared with the prior art, the advantages of the present invention are as follows: the device for separating pet feces and sand separates the pet's activity space from the feces separation space by using the first bearing area on the first conveyor as the pet's excretion area and setting a sand sieve to receive the mixture of feces and sand. This reduces the restrictions imposed on the first conveyor by the sand sieve structure, allowing the first bearing area to be set larger, thus increasing the effective pet activity space. In addition, the sand sieve is equipped with a rotatable agitator inside, which is used to agitate the mixture falling into the sieve, thereby causing the sand to vibrate and allowing it to fall through the mesh of the sieve area more quickly, accelerating the separation speed of feces and improving the feces separation efficiency. Attached Figure Description

[0037] Figure 1 This is a three-dimensional structural diagram of the pet toilet in Embodiment 1 of the present invention (the sand screening chamber is in the first state);

[0038] Figure 2 This is a partial three-dimensional structure of the device for separating pet feces and sand in Embodiment 1 of the present invention. Figure 1 (Sand screening bin in its first state);

[0039] Figure 3 This is a partial three-dimensional structure of the device for separating pet feces and sand in Embodiment 1 of the present invention. Figure 2 (Sand screening bin in its first state);

[0040] Figure 4 This is a three-dimensional structural diagram of the device for separating pet feces and sand in Embodiment 1 of the present invention (the sand screening chamber is in the third state);

[0041] Figure 5 This is the usage state of the device for separating pet feces and sand in Embodiment 1 of the present invention. Figure 1 (The sand screening bin is in the third state);

[0042] Figure 6 This is the usage state of the device for separating pet feces and sand in Embodiment 1 of the present invention. Figure 2 (The sand screening bin is in the third state);

[0043] Figure 7 This is a three-dimensional structural diagram of the device for separating pet feces and sand in Embodiment 1 of the present invention after removing the sand screening chamber and the mixing component;

[0044] Figure 8 for Figure 7 Enlarged view of point A in the middle;

[0045] Figure 9 This is a partial three-dimensional structure of the device for separating pet feces and sand in Embodiment 1 of the present invention. Figure 3 (The sand screening bin is in the second state);

[0046] Figure 10 This is a three-dimensional structural diagram of the sand screening bin and the mixing component in Embodiment 1 of the present invention. Detailed Implementation

[0047] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0048] Example 1

[0049] like Figures 1-10 The image shown is a first preferred embodiment of the present invention.

[0050] like Figure 2 and Figure 4 As shown, the device for separating pet feces and sand in this embodiment includes: a base 1, a first conveying component 2, a sand screening chamber 31, a stirring component 32, a second conveying component 4, a feces collection box 5, a first driving mechanism, a second driving mechanism, and a third motor 9.

[0051] like Figure 2 and Figure 4 As shown, the base 1 is basin-shaped. The first conveying assembly 2 includes a drive roller 21, a driven roller 22, and a first conveyor 23. The drive roller 21 and the driven roller 22 are spaced apart along the conveying direction of the first conveyor 23, with the drive roller 21 adjacent to the front end of the first conveyor 23 and the driven roller 22 adjacent to the rear end of the first conveyor 23. The first conveyor 23 is a conveyor belt wound around the drive roller 21 and the driven roller 22, and the upper part of the first conveyor 23 is a first bearing area 231 for placing a mixture of sand and feces. There are two sets of the first conveying assembly 2, which are spaced apart, and the conveying directions of the two first conveyors 23 are opposite to each other, thereby accelerating the horizontal conveying speed of sand or a mixture of sand and feces in the pet activity space, facilitating the spreading of sand, or facilitating the transport of the mixture of sand and feces to the front end of the first bearing area.

[0052] The sand screening bin 31 is cylindrical (see...). Figure 10 The screening bin 31 is horizontally positioned between the two sets of first conveying components 2, and its central axis is perpendicular to the conveying direction of the first conveying component 23 (see...). Figure 2 The sieve bin 31 has a sand drop outlet 311, a sieve hole area 312, and a closed area 313 along its circumferential direction on its peripheral wall (see...). Figure 10 The agitator 32 is rotatably disposed inside the sand screening chamber 31, and is used to agitate the mixture falling into the chamber and cause the sand to pass through the screen aperture area 312. The agitator 32 is a conveying screw, and one end of the agitator 32 is rotatably connected to the sand screening chamber 31, and the other end has a gap 30 between it and the inner wall of the sand screening chamber 31 (see...). Figure 10 ).

[0053] The sand screening bin 31 is rotatably mounted on the base 1 along its central axis and has three states as it rotates:

[0054] In the first state, the sand discharge port 311 faces upward and is lower than the first bearing area 231, and the screen area 312 is located below the sand discharge port 311 (see...). Figure 2 Thus, the mixture falling from the first bearing area 231 can enter the bin through the sand drop port 311 and then fall into the sieve area 312;

[0055] In the second state, the sand drop outlet 311 faces downwards (see...) Figure 9 ), so that the feces in the sand screening bin 31 can fall through the sand drop outlet 311.

[0056] In the third state, the height of the closed area 313 is higher than that of the sand drop outlet 311 and the sieve area 312, and is basically level with the first bearing area 231 (see...). Figure 4 This allows a portion of the sand screening chamber 31 to serve as a supplement to the pet activity space, thereby further increasing the effective pet activity space without increasing the overall size of the device.

[0057] The device for separating pet feces and sand in this embodiment uses the first bearing area 231 on the first conveyor 23 and the closed area 313 of the sand sieve 31 together as the pet's excretion area, and sets up the sand sieve 31 to receive the mixture of feces and sand, thereby separating the pet's activity space from the feces separation space. This reduces the restrictions that the structure of the sand sieve 31 places on the first conveyor 23, allowing the first bearing area 231 to be set larger. Furthermore, the addition of the closed area 313 gives the device a larger effective pet activity space. In addition, the sand sieve 31 is equipped with a rotatable agitator 32 inside, which is used to agitate the mixture falling into the sieve, thereby causing the sand to vibrate and allowing the sand to fall through the mesh of the sieve area 312 more quickly, accelerating the feces separation speed and improving the feces separation efficiency.

[0058] The base 1 is equipped with a second drive mechanism for driving the sand screening chamber 31 to rotate. The second drive mechanism includes a second motor 71, a fifth gear 72 located at the output end of the second motor 71, and a sixth gear 34 located at one end of the sand screening chamber 31. The sixth gear 34 meshes with the fifth gear 72 (see...). Figure 3 The third motor 9 is located on the base 1 at the other end near the sand screening chamber 31, and the output end of the third motor 9 is connected to the stirring element 32 to drive the stirring element 32 to rotate relative to the sand screening chamber 31 (see...). Figure 5 ).

[0059] like Figure 2 , Figure 3 and Figure 4 As shown, the second conveying assembly 4 is arranged vertically and includes a driving roller 41, a driven roller 42, and a second conveyor 43. The driving roller 41 and the driven roller 42 are spaced apart along the conveying direction of the second conveyor 43, with the driving roller 41 adjacent to the rear end of the second conveyor 43 and the driven roller 42 adjacent to the front end of the second conveyor 43. The second conveyor 43 is a conveyor belt wound around the driving roller 41 and the driven roller 42, with the front end of the second conveyor 43 located directly above one of the first bearing areas 231 and the rear end of the second conveyor 43 located below one side of the sand screening bin 31. Furthermore, the side of the second conveyor 43 facing the first conveying assembly 2 is a second bearing area 431 for placing sand, thereby enabling the sand that has passed through the screen area 312 to be transported back to the first bearing area 231, facilitating the recycling of sand.

[0060] like Figure 3 and Figure 8 As shown, the first drive mechanism includes a first motor 61, a first gear 62, a second gear 63, a third gear 64, a fourth gear 65, and a belt 66. The first motor 61 is mounted on the base 1, and the first gear 62 is mounted on the output shaft of the first motor 61. The second gear 63 is mounted on the drive roller shaft 21 and meshes with the first gear 62. The third gear 64 is coaxially arranged with the first gear 62, and the fourth gear 65 is mounted on the drive roller 41. The belt 66 is wound around the third gear 64 and the fourth gear 65, thereby linking the drive roller 41 and the drive roller shaft 21, making the device structure more compact.

[0061] The method of using the device for separating pet feces and sand in this embodiment is as follows:

[0062] like Figure 6 As shown, before the pet defecates, the sand sieve 31 is in the third state, that is, the height of the closed area 313 is higher than that of the sand drop outlet 311 and the sieve hole area 312 and is basically level with the first bearing area 231, so that the sand is evenly spread on the two first bearing areas 231 and the closed area 313. After the pet defecates, a mixture of sand and feces is formed.

[0063] First, the second drive mechanism drives the sand screening chamber 31 to rotate to the first state, so that the sand discharge port 311 faces upward and is lower than the first bearing area 231, and the screen hole area 312 is located below the sand discharge port 311 (see...). Figure 2 ).

[0064] Then, the first drive mechanism drives both first conveyor components 23 to rotate forward, conveying the mixture of sand and manure forward. This mixture falls from the inside of the first bearing area 231 and enters the bin through the sand drop outlet 311, subsequently falling into the screen area 312. The third motor 9 drives the agitator 32 to rotate relative to the sand screening bin 31, separating the mixture and conveying the manure to the gap 30. The separated sand falls through the screen area 312 onto the second bearing area 431 (see...). Figure 3 At the same time, the second conveyor 43 rotates in the forward direction to transport the sand forward, eventually causing the sand to fall onto the first bearing area 321.

[0065] After all the mixtures have been separated, the second drive mechanism drives the sand screening bin 31 to rotate to the second state, i.e., the sand discharge port 311 faces downwards (see...). Figure 10 The feces in the sand screening chamber 31 fall through the sand drop outlet 311 into the feces collection chamber 5 located at the bottom of the base 1.

[0066] After all the sand has been conveyed to the first bearing area 231, the second drive mechanism drives the sand screening chamber 31 to rotate and return to the third state, where the height of the closed area 313 is higher than the sand drop outlet 311 and the screen area 312, and is basically level with the first bearing area 231. The first drive mechanism drives the two first conveying components 23 to alternately rotate forward and reverse, thereby spreading the sand again (see...). Figure 5 and Figure 6 (This is for the pet to use for its next excrement.)

[0067] like Figure 1 As shown, the pet toilet in this embodiment is a cat toilet. The pet toilet uses the aforementioned device for separating pet feces and sand, and the base 1 is provided with a cover 8, which has an opening 81 for the cat to enter and exit the interior of the cover 8.

[0068] Example 2

[0069] The difference between this embodiment and embodiment 1 is that there is only one set of the first conveying component 2, and the sand screening chamber 31 is adjacent to the front end of the first conveying component 23. The sand screening chamber 31 is fixedly installed on the base 1, and the bottom of the sand screening chamber 31 is also provided with a discharge port and a cover plate for closing or opening the discharge port, so that the feces in the sand screening chamber 31 can leak into the feces collection chamber 5 through the discharge port.

[0070] The specification and claims of this invention use terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," to describe various exemplary structural parts and elements of the invention. However, these terms are used herein merely for ease of explanation and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this invention can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be considered as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. A device for separating pet feces and sand, comprising: Base (1); The feature is that the base (1) is provided with: The first conveying assembly (2) is basically horizontally arranged. The upper part of its first conveying component (23) is a first bearing area (231) for placing a mixture of sand and manure. The two ends along the conveying direction are the front end and the rear end, respectively. The sand sieve bin (31) has a sand drop port (311) and a sieve hole area (312) on its wall. The sand drop port (311) is located below the front end of the first conveyor (23) and is arranged to allow the mixture falling from the first bearing area (231) to enter the bin through the sand drop port (311) and then fall into the sieve hole area (312). The agitator (32) is rotatably disposed in the sand screening chamber (31) for agitating the mixture falling into the chamber and causing the sand and soil therein to pass through the sieve hole area (312); The sand screening bin (31) can rotate about a rotation axis perpendicular to the conveying direction of the first conveying member (23). The sand drop port (311) and the screen hole area (312) are distributed circumferentially, and the sand screening bin (31) has at least two of the following states as it rotates: In the first state, the sand drop outlet (311) faces upward and is basically level with or lower than the first bearing area (231), and at least a portion of the sieve hole area (312) is located below the sand drop outlet (311). In the second state, the sand discharge port (311) faces downward so that the feces in the sand screening bin (31) can fall through the sand discharge port (311); The sand screening bin (31) is cylindrical and has a closed area (313) on its peripheral wall. The closed area (313) is located between the sand drop outlet (311) and the screen hole area (312) in the circumferential direction. The sand screening bin (31) also has a third state as it rotates: the height of the closed area (313) is higher than the sand drop outlet (311) and the screen hole area (312) and is basically level with the first bearing area (231).

2. The apparatus according to claim 1, characterized in that, The sand screening bin (31) is cylindrical, and its central axis is the rotation axis.

3. The apparatus according to claim 1, characterized in that, The sand discharge port (311) faces upward, and at least a portion of the sieve hole area (312) is located below the sand discharge port (311).

4. The apparatus according to claim 1, characterized in that, The stirring component (32) is a conveying screw, and one end of the stirring component (32) is rotatably connected to the sand screening chamber (31), and the other end has a gap (30) between it and the inner wall of the sand screening chamber (31).

5. The apparatus according to claim 1, characterized in that, The first conveying component (2) has two sets, which are located on both sides of the sand screening chamber (31), and the conveying directions of the two first conveying components (23) are arranged opposite to each other.

6. The apparatus according to any one of claims 1 to 5, characterized in that, The first conveying assembly (2) further includes a drive roller (21) and a driven roller (22) spaced apart along the conveying direction of the first conveyor (23). The drive roller (21) is adjacent to the front end of the first conveyor (23), and the driven roller (22) is adjacent to the rear end of the first conveyor (23). The first conveyor (23) is a conveyor belt wound around the drive roller (21) and the driven roller (22).

7. The apparatus according to claim 6, characterized in that, The base (1) is also provided with a second conveying component (4) arranged in a basically vertical direction. The side of the second conveying component (43) facing the first conveying component (2) is a second bearing area (431) for placing sand. The two ends along the conveying direction are the front end and the rear end, respectively. The front end of the second conveying component (43) is located directly above the first bearing area (231), and the rear end of the second conveying component (43) is located below one side of the sand screening bin (31).

8. The apparatus according to claim 7, characterized in that, The second conveying assembly (4) further includes a drive roller (41) and a driven roller (42) spaced apart along the conveying direction of the second conveyor (43). The drive roller (41) is adjacent to the rear end of the second conveyor (43), and the driven roller (42) is adjacent to the front end of the second conveyor (43). The second conveyor (43) is a conveyor belt wound around the drive roller (41) and the driven roller (42).

9. The apparatus according to claim 8, characterized in that, The active roller (41) and the active roller shaft (21) are linked together, and the base (1) is also provided with a first driving mechanism for driving the active roller (41) and the active roller shaft (21) to rotate.

10. The apparatus according to claim 9, characterized in that, The first driving mechanism includes First motor (61); The first gear (62) is located on the output shaft of the first motor (61); The second gear (63) is disposed on the drive roller (21) and meshes with the first gear (62); The third gear (64) is coaxially arranged with the first gear (62); The fourth gear (65) is mounted on the drive roller (41); A belt (66) is wound around the third gear (64) and the fourth gear (65).

11. A pet toilet, characterized in that, The application includes a device for separating pet feces and sand as described in any one of claims 1 to 10.

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