CN219545712U - Rubbish bag replacement device, dustbin and pet lavatory - Google Patents

Abstract

The utility model relates to a garbage bag replacing device, which comprises an annular frame, an annular cavity and a garbage bag replacing device, wherein the annular frame is provided with an opening at the inner ring side, the garbage bag is used for accommodating the cylindrical garbage bag in a folded state and allowing the peripheral wall end part of the stretched garbage bag to penetrate out of the opening; the bag pulling mechanism is arranged on the annular frame and positioned at the opening or outside the annular chamber and used for limiting the partial peripheral wall of the garbage bag and pulling the garbage bag in the annular chamber outwards for a certain distance; the method is characterized in that: the annular frame comprises an annular seat and a connecting piece detachably connected to the annular seat, and the bag pulling mechanism comprises a first part arranged on the annular seat and a second part arranged on the connecting piece, wherein the second part is matched with the first part together to limit the local peripheral wall of the garbage bag. Also relates to a dustbin with the garbage bag replacing device and a pet toilet with the garbage bag replacing device or the dustbin.

Description

Rubbish bag replacement device, dustbin and pet lavatory

Technical Field

The utility model relates to garbage bag replacement, in particular to a garbage bag replacement device, a garbage can using the garbage bag replacement device, and a pet toilet using the garbage bag replacement device or the garbage can.

Background

The dustbin is used as a container for temporarily storing garbage, and is commonly found in our lives. Besides being used alone, the dustbin can also be used as accessories of other equipment, such as dust collectors, pet toilets and the like. The structure of the dustbin in the dust collector can be disclosed in Chinese patent application No. ZL201320549736.5 (bulletin No. CN 203458327U), namely an intelligent dust collector, and the structure of the dustbin in the pet toilet can be disclosed in Chinese patent application No. CN202110021582.1 (publication No. CN 112715380A), namely an intelligent cycle cat litter self-cleaning cabin.

When the traditional dustbin is used, in order to avoid direct contamination of garbage on the inner wall of the dustbin, bags can be sleeved in the dustbin, the bag openings of the garbage bags are folded after the dustbin is full of garbage, and finally the garbage bags are taken out and discarded. The conventional garbage can bag changing operation is usually completed manually, the whole bag changing operation is complicated, and in the process of using and closing up the garbage bags, the garbage is inevitably required to be touched directly, for example, the garbage falls into a gap between the garbage bag and the garbage can or the garbage is too full, so that the garbage bag changing process is not sanitary enough.

In order to solve the problems, a garbage can capable of automatically changing bags is disclosed, and the garbage can mainly adopts annular whole garbage bags which are stored in an annular bag storage cavity, one end of each garbage bag penetrates out of the bag storage cavity, one end opening of each garbage bag is sealed by a bag sealing mechanism, the bag bottom of each garbage bag is formed at the sealed position, and then the garbage bags in the bag storage cavity are stretched outwards for a section by a bag pulling mechanism such as a drawing roller to hold the peripheral wall of each garbage bag or the negative pressure suction effect of a suction fan, so that the garbage bags have certain capacity; when the garbage bag is full, the bag sealing mechanism seals the bag opening of the garbage bag again and forms the bag bottom of the next garbage bag at the sealed position, so that the automatic bag changing process of the garbage bag is realized.

The automatic garbage can capable of being automatically replaced effectively solves the problem that the garbage bag is automatically replaced in the using process, but a user still needs to carry out primary bagging operation on the garbage bag before using the garbage can, and the technical scheme of adopting the drawing roller is that the drawing roller comprises two roller shafts matched with each other, wherein one roller shaft needs to be designed to be movable so that the two roller shafts can be close to or far away from each other, the two roller shafts need to be mutually far away from each other before the drawing roller clamps the peripheral wall of the garbage bag, so that the peripheral wall of the garbage bag is penetrated between the two roller shafts, and then the two roller shafts are mutually close to each other and reset, so that the local peripheral wall of the garbage bag is held. The bag pulling mechanism has a complex structure, and relates to the movement and the resetting of the roll shaft, so that the first bagging operation of the bag mouth of the garbage bag is complicated.

Disclosure of Invention

The first technical problem to be solved by the present utility model is to provide a garbage bag replacing device for simplifying the first bagging operation of a user on a garbage bag.

A second technical problem to be solved by the present utility model is to provide a dustbin with the above garbage bag replacing device, aiming at the above state of the art.

The third technical problem to be solved by the utility model is to provide a pet toilet with the dustbin.

The fourth technical problem to be solved by the utility model is to provide a pet toilet with the garbage bag replacing device aiming at the state of the art.

The technical scheme adopted by the utility model for solving the first technical problem is as follows: a garbage bag replacing device, comprising

An annular frame having an annular chamber with an opening at an inner ring side thereof for accommodating a tubular garbage bag in a folded state and allowing a peripheral wall end portion of the stretched garbage bag to pass out from the opening;

the bag pulling mechanism is arranged on the annular frame and positioned at the opening or outside the annular chamber, and is used for limiting the partial peripheral wall of the garbage bag and pulling the garbage bag in the annular chamber outwards for a certain distance;

the method is characterized in that: the annular frame comprises an annular seat and a connecting piece detachably connected to the annular seat, the bag pulling mechanism comprises a first part arranged on the annular seat and a second part arranged on the connecting piece, and the second part is matched with the first part together to limit the local peripheral wall of the garbage bag.

The specific direction in which the garbage bag is pulled out is not limited, as long as the garbage bag can be pulled out a certain distance. Either the first section is pulled up and then down, or only the section is pulled down.

Through connecting piece and annular seat detachably, make the disposal bag before the first time by the bagging-off operation, can dismantle the connecting piece from annular seat earlier, cover the local perisporium of disposal bag on first part again, assemble the connecting piece on annular seat, need not extra operation can realize the adaptation of first part and second part to simplify the user and carry out the first bagging-off operation to the disposal bag, make the user carry out the first bagging-off operation to the disposal bag more convenient.

In order to facilitate the replacement of the tubular garbage bag during the bagging operation, the connecting piece and the annular seat jointly define the annular chamber, so that the replacement of the tubular garbage bag and the primary bagging operation are carried out in one step.

In order to simplify the structure of the annular chamber, the top of the annular seat is provided with a concave part; the connecting piece is annular, and the connecting piece is provided with a top wall connected with the top of the side wall of the lower concave part and an inner annular wall extending downwards from the inner edge of the top wall, and the inner annular wall, the top wall and the lower concave part jointly form the annular chamber.

Because the disposal bag is usually made of plastics, the surface of disposal bag is liable to be electrostatically charged, if the distance between the bag pulling mechanism and the annular chamber is set to be relatively close, the disposal bag is liable to be easily pulled apart due to the electrostatic clusters. In order to facilitate the extension of the axial length of the inner annular wall of the connecting piece, the first part is arranged at the lower part of the annular seat, the inner annular wall of the connecting piece extends to the lower part of the bottom wall of the concave part, and the second part is arranged at the bottom of the connecting piece, so that the garbage bag is more easily pulled apart in the depth direction.

In order to make the bag pulling mechanism simpler, the first component and the second component are both roll shafts, and the rotation direction of the first component is opposite to the rotation direction of the second component.

Further, the first component is located at the periphery of the second component, and the diameter of the first component is larger than that of the second component, so that occupation of the second component to the inner space of the garbage bag can be reduced.

In order to simplify the bag pulling mechanism, the bag pulling mechanism further comprises a first driving mechanism which is arranged on the annular seat and used for driving the first component to rotate, and the second component is driven by the first component.

In order to make the first driving mechanism simpler, the cross section of the central hole of the annular seat is polygonal, and the first driving mechanism comprises a first driving motor and a transmission rod assembly, wherein the output end of the first driving motor is provided with a first gear, the input end of the transmission rod assembly is provided with a second gear, and the second gear is meshed with the first gear; the transmission rod assembly comprises at least three transmission rods which are distributed on each side edge of the central hole of the annular seat and connected end to end through a bevel gear structure, and at least two transmission rods in the transmission rod assembly are provided with the first component.

In order to make the opening of the garbage bag better, the first parts are at least two and are distributed at intervals along the circumferential direction of the annular seat at the positions close to the central hole of the annular seat; the second parts are at least two, are distributed on the connecting piece at intervals along the circumferential direction of the central hole of the annular seat, and correspond to the first parts respectively.

In order to facilitate the bottom sealing of the garbage bag, the annular frame further comprises an annular piece connected to the lower portion of the annular seat, a central hole of the annular piece corresponds to the central hole of the annular seat, and a bag sealing mechanism is arranged on the annular piece and used for sealing an opening at one end of the garbage bag and forming a bag bottom of the garbage bag at a sealing position.

In order to make the bag sealing mechanism simpler, the bag sealing mechanism comprises an electric heating wire arranged at one side of a central hole of the annular piece and a push rod which can be close to or far from the electric heating wire and is restrained on the annular piece, and the reciprocating movement direction of the push rod is perpendicular to the length direction of the push rod.

The utility model solves the second technical problem by adopting the technical proposal that: the utility model provides a dustbin, includes box, its characterized in that: the upper part of the box body is provided with the garbage bag replacing device.

The technical scheme adopted by the utility model for solving the third technical problem is as follows: a pet litter box comprising a housing, characterized in that: the inside of the shell is provided with a fecal separation device which is provided with a fecal outlet, and the inside of the shell is also detachably provided with a dustbin below the fecal outlet.

The technical scheme adopted by the utility model for solving the fourth technical problem is as follows: a pet litter box comprising a housing, characterized in that: the inside of the shell is provided with a fecal separation device and a fecal collecting box, and the fecal separation device is provided with a fecal outlet positioned above the fecal collecting box; the inside of the shell is detachably provided with the garbage bag replacing device, and the garbage bag replacing device is positioned between the excrement outlet and the excrement collecting box.

In order to make the structure of the excrement separating device simpler and the separating effect better, the excrement separating device comprises a base provided with the excrement outlet and a rotating piece which is rotatably arranged on the base around a basically horizontal rotating axis, wherein the rotating piece is provided with an inner cavity, a first opening part and an outlet, the first opening part is communicated with the inner cavity, the first opening part is used for a pet to enter and exit the inner cavity, the outlet is used for pouring out excrement in the inner cavity, and the rotating piece can rotate until the outlet is correspondingly communicated with the excrement outlet; the rotating piece is provided with a screen positioned in the inner cavity.

In order to increase the pet activity space in the inner cavity, one side of the screen is rotatably connected with the rotating member through a connecting shaft, the connecting shaft is basically parallel to the rotating axis of the rotating member, and when the screen rotates until the part of the screen contacts with the inner surface of the rotating member, the part of the screen except the part is closely adjacent to or is in fit with the inner surface of the rotating member.

Compared with the prior art, the utility model has the advantages that: the garbage bag replacing device is characterized in that the connecting piece is detachably connected with the annular seat, so that the connecting piece can be detached from the annular seat before the garbage bag is first bagged, the local peripheral wall of the garbage bag is covered on the first component, and finally the connecting piece is assembled on the annular seat, so that the adaptation of the first component and the second component can be realized without additional operation, the garbage bag is simplified to be firstly bagged by a user, and the garbage bag is more conveniently bagged by the user.

Drawings

FIG. 1 is a perspective view showing a first construction of a garbage bag replacement apparatus according to an embodiment 1 of the present utility model;

FIG. 2 is a second perspective view of the garbage bag replacement apparatus according to the embodiment 1 of the present utility model;

FIG. 3 is an exploded perspective view of the garbage bag replacement apparatus according to embodiment 1 of the present utility model;

FIG. 4 is a bottom view of the annular seat in embodiment 1 of the present utility model;

FIG. 5 is a perspective view showing a construction of a garbage bag replacement apparatus according to embodiment 1 of the present utility model after a garbage bag is attached;

FIG. 6 is a sectional view of the garbage bag replacement apparatus according to the embodiment 1 of the present utility model after the garbage bag is mounted;

FIG. 7 is a perspective view showing the structure of a pet litter box of embodiment 1 of the utility model;

FIG. 8 is a partially exploded view of the pet litter box of example 1 of the utility model;

fig. 9 is a sectional view of the pet litter box of embodiment 1 of the utility model.

Detailed Description

The utility model is described in further detail below with reference to the embodiments of the drawings.

Example 1

As shown in fig. 1-9, is a first preferred embodiment of the present utility model.

The garbage bag replacing device in the embodiment comprises an annular frame 10, a bag pulling mechanism and a bag sealing mechanism.

The ring frame 10 includes a connector 2, a ring seat 1 and a ring 3 in this order from top to bottom (see fig. 1 to 3). The top of the annular seat 1 is provided with a concave part 12 (see figure 3); the connector 2 is detachably connected to the annular seat 1 and has an annular shape, the connector 2 has a top wall 21 connected to the top of the side wall of the recess 12, and an inner annular wall 22 (see fig. 3) extending downward from the inner edge of the top wall 21, and the inner annular wall 22, the top wall 21 and the recess 12 together form an annular chamber 100 (see fig. 1). The annular chamber 100 is for accommodating a tubular garbage bag 9 in a folded state, and an opening is provided on an inner ring side of the annular chamber 100 to allow a peripheral wall end portion of the stretched garbage bag 9 to pass out of the opening (see fig. 5 to 6).

As shown in fig. 6, the bag pulling mechanism includes a first member 11, a second member 221, and a first driving mechanism. The first part 11 is arranged at the lower part of the annular seat 1; the inner annular wall 22 of the connector 2 extends below the bottom wall of the recess 12 and is provided at its bottom with a second part 221, which second part 221 cooperates with the first part 11 at the opening of the annular chamber 100 to retain a partial peripheral wall of the disposal bag 9. The first part 11 and the second part 221 are roll shafts, and the rotation direction of the first part 11 is opposite to the rotation direction of the second part 221, so that the rotation of the first part 11 and the second part 221 can pull the garbage bag 9 in the annular chamber 100 outwards by a distance. The first part 11 is located at the periphery of the second part 221, and the diameter of the first part 11 is larger than that of the second part 221, so that the occupation of the second part 221 on the inner space of the garbage bag 9 can be reduced.

As shown in fig. 4, the first driving mechanism is used for driving the first component 11 to rotate, and the second component 221 is driven by the first component 11. The cross section of the central hole of the annular seat 1 is rectangular, the first driving mechanism comprises a first driving motor 61 and a transmission rod assembly, a first gear 62 is arranged at the output end of the first driving motor 61, a second gear 63 is arranged at the input end of the transmission rod assembly, and the second gear 63 is meshed with the first gear 62; the transmission rod assembly comprises four transmission rods which are distributed on each side edge of the central hole of the annular seat 1 and are connected end to end through a bevel gear structure, and two first components 11 are installed on each transmission rod 64 in the transmission rod assembly at intervals.

As shown in fig. 3 and 6, the central hole of the ring 3 corresponds to the central hole of the ring seat 1, and a bag sealing mechanism is provided on the ring 3 for sealing one end opening of the garbage bag 9 and forming a bottom of the garbage bag 9 at the sealing position. The bag closing mechanism includes an electric heating wire 41, a push rod 42, a second driving mechanism, and a balance rod 46. The heating wire 41 is provided at one side of the central hole of the ring member 3, the push rod 42 is restrained on the ring member 3 to be close to or far from the heating wire 41, and the reciprocating direction of the push rod 42 is perpendicular to the length direction thereof. The second driving mechanism comprises a second driving motor 43 and a screw rod 45 arranged at the output end of the second driving motor 43, and one end of the push rod 42 is connected with a sliding block 44 which is matched and connected with the screw rod 45. The balance bar 46 is parallel to the screw 45, and the other end of the push rod 42 is disposed on the balance bar 46.

As shown in fig. 7 to 9, the pet litter box of this embodiment comprises a housing 5, the housing 5 is internally provided with a litter separating device 7 and a litter box 8, the litter separating device 7 comprises a base 71 and a rotating member 72 rotatably provided on the base 71 about a substantially horizontal rotation axis, the rotating member 72 has a drum shape, and the rotating member 72 has an inner cavity 720, and a first mouth 722 and an outlet 721 communicating with the inner cavity 720, the first mouth 722 is located at one end of the rotating member 72 and is provided for a pet to enter and exit the inner cavity 720, and a second mouth 51 is provided on the housing 5 at a position corresponding to the first mouth 722; the outlet 721 is located on the peripheral wall of the rotor 72 and provides for the pouring of fecal matter from the cavity 720. The base 71 is provided with a urine outlet 711 above the urine collecting box 8, and the rotating member 72 can rotate until the outlet 721 is correspondingly communicated with the urine outlet 711, and the garbage bag replacing device is detachably arranged in the shell 5 and between the urine outlet 711 and the urine collecting box 8. The rotating member 72 is provided with a screen 73 positioned in an interior cavity 720. One side of the screen 73 is rotatably connected to the rotating member 72 by a connecting shaft 733, and the connecting shaft 733 is substantially parallel to the rotation axis of the rotating member 72, the screen 73 has opposite first and second surfaces 73a and 73b, and when the screen 73 is rotated until a part thereof contacts the inner surface of the rotating member 72, a part of the screen 73 other than the part thereof contacts the inner surface of the rotating member 72. The rotary member 72 and the screen 73 are driven by a driving motor, not shown.

The working principle of the pet toilet in the embodiment is as follows:

installing a garbage bag 9: before the first bagging operation, the tubular garbage bag 9 is detached from the inside of the casing 5, the connecting piece 2 is detached from the annular seat 1, the tubular garbage bag 9 is accommodated in the concave portion 12, the partial peripheral wall of the garbage bag 9 is covered on the first part 11, the connecting piece 2 is assembled on the annular seat 1, and finally the garbage bag replacing device is put back into the inside of the casing 5.

Pulling the garbage bag 9 downward: the second driving motor 43 drives the screw rod 45 to rotate, so that the sliding block 44 drives the push rod 42 to approach the heating wire 41, and the cylindrical garbage bag 9 is sealed at the first time. The first drive motor 61 then drives the first member 11 to rotate, which in turn drives the second member 221 to rotate and the bag 9 to pull down, providing the bag 9 outside the annular chamber 100 with sufficient volume.

The process of separating the feces and the sand by the feces separating device 7 is as follows:

in the first state of the faeces separation device 7, the first surface 73a of the screen 73 is in abutment with the inner surface of the rotatable member 72 such that sand is located above the screen 73 for the pet to enter the cavity 720 for faeces and the outlet 721 is located above the screen 73. After the pet urinates, the faeces will cause part of the sand to agglomerate, both with clean sand above the screen 73.

Both the rotating member 72 and the sieve 73 are rotated in a counter-clockwise direction until the faeces separating device 7 is in the second condition, the outlet 721 is directed downwards and corresponds to the faeces outlet 711, the sieve 73 is substantially inclined, and the first surface 73a of the sieve 73 is separated from the inner surface of the rotating member 72 and the second surface 73b is directed towards the outlet 721, thereby facilitating the separation of the mixture of faeces and sand by the sieve 73, which faeces is led into the waste bag 9 via the outlet 721, the faeces outlet 711 in sequence, and the sand is leaked down through the openings in the sieve 73 and is located in the space between the first surface 73a of the sieve 73 and the inner surface of the rotating member 72.

Subsequently, the rotating member 72 is rotated in a clockwise direction such that the outlet 721 is positioned at the upper portion of the rotating member 72, the sand is positioned at the bottom of the cavity 720, and the screen 3 is rotated in a clockwise direction such that the screen 73 is substantially vertical and the first surface 73a thereof is engaged with the inner surface of the rotating member 72, and the positions of the rotating member 72 and the screen 73 are in the third state.

Finally, the rotating member 72 and the screen 73 are rotated in the counterclockwise direction to return to the first state, thereby completing the feces separation process after the pet excretes.

Packaging the garbage bag 9: the second driving motor 43 drives the screw rod 45 to rotate again, so that the sliding block 44 drives the push rod 42 to approach the electric heating wire 41, thereby sealing and fusing the cylindrical garbage bag 9, forming the bag bottom of the next section of garbage bag 9 at the sealed position, and dropping the fused garbage bag 9 into the excrement collecting box 8.

Example 2

This embodiment differs from embodiment 1 in that: the excrement separating device 7 in this embodiment adopts a drum structure as in chinese utility model patent No. ZL202123109845.9 (bulletin No. CN 216392543U), a pet toilet.

In the description and claims of the present utility model, terms indicating directions, such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", etc., are used to describe various example structural parts and elements of the present utility model, but these terms are used herein for convenience of description only and are determined based on the example orientations shown in the drawings. Because the disclosed embodiments of the utility model may be arranged in a variety of orientations, the directional terminology is used for purposes of illustration and is in no way limiting, such as "upper" and "lower" are not necessarily limited to being in a direction opposite or coincident with the direction of gravity.

Claims (16)

1. A garbage bag replacing device, comprising

An annular frame (10) having an annular chamber (100) provided with an opening on an inner ring side thereof for accommodating the tubular garbage bag (9) in a folded state and allowing a peripheral wall end portion of the stretched garbage bag (9) to pass out from the opening;

the bag pulling mechanism is arranged on the annular frame (10) and positioned at the opening or outside the annular chamber (100) and is used for limiting the partial peripheral wall of the garbage bag (9) and pulling the garbage bag (9) in the annular chamber (100) outwards for a certain distance;

the method is characterized in that: the annular frame (10) comprises an annular seat (1) and a connecting piece (2) detachably connected to the annular seat (1), the bag pulling mechanism comprises a first part (11) arranged on the annular seat (1) and a second part (221) arranged on the connecting piece (2), and the second part (221) is matched with the first part (11) together to limit the local peripheral wall of the garbage bag (9).

2. The garbage bag replacement apparatus according to claim 1, wherein: the connecting piece (2) and the annular seat (1) jointly define the annular chamber (100).

3. The garbage bag replacement apparatus according to claim 2, wherein: the top of the annular seat (1) is provided with a concave part (12); the connecting piece (2) is annular, the connecting piece (2) is provided with a top wall (21) connected with the top of the side wall of the concave part (12) and an inner annular wall (22) extending downwards from the inner edge of the top wall (21), and the inner annular wall (22), the top wall (21) and the concave part (12) jointly form the annular chamber (100).

4. A garbage bag replacement apparatus according to claim 3, wherein: the first component (11) is arranged at the lower part of the annular seat (1), the inner annular wall (22) of the connecting piece (2) extends to the lower part of the bottom wall of the lower concave part (12), and the bottom of the inner annular wall is provided with the second component (221).

5. The garbage bag replacement apparatus according to claim 1, wherein: the first component (11) and the second component (221) are roll shafts, and the rotation direction of the first component (11) is opposite to the rotation direction of the second component (221).

6. The garbage bag replacement apparatus according to claim 5, wherein: the first part (11) is located at the periphery of the second part (221), and the diameter of the first part (11) is larger than that of the second part (221).

7. The garbage bag replacement apparatus according to claim 5, wherein: the bag pulling mechanism also comprises a first driving mechanism which is arranged on the annular seat (1) and used for driving the first component (11) to rotate, and the second component (221) is driven by the first component (11).

8. The garbage bag replacement apparatus according to claim 7, wherein: the cross section of the central hole of the annular seat (1) is polygonal, the first driving mechanism comprises a first driving motor (61) and a transmission rod assembly, a first gear (62) is arranged at the output end of the first driving motor (61), a second gear (63) is arranged at the input end of the transmission rod assembly, and the second gear (63) is meshed with the first gear (62); the transmission rod assembly comprises at least three transmission rods (64) which are distributed on each side edge of a central hole of the annular seat (1) and are connected end to end sequentially through a bevel gear structure, and at least two transmission rods (64) in the transmission rod assembly are provided with the first component (11).

9. The garbage bag replacement apparatus according to claim 1, wherein: the number of the first parts (11) is at least two, and the first parts are distributed on the annular seat (1) at intervals along the circumferential direction of the annular seat (1) at positions close to the central hole of the annular seat; the second parts (221) are at least two, are distributed on the connecting piece (2) at intervals along the circumferential direction of the central hole of the annular seat (1), and correspond to the first parts (11) respectively.

10. The garbage bag replacement apparatus according to any one of claims 1 to 9, wherein: the annular frame (10) also comprises an annular piece (3) connected to the lower part of the annular seat (1), a central hole of the annular piece (3) corresponds to the central hole of the annular seat (1), and a bag sealing mechanism is arranged on the annular piece (3) and is used for sealing an opening at one end of the garbage bag (9) and forming a bag bottom of the garbage bag (9) at a sealing position.

11. The garbage bag replacement apparatus according to claim 10, wherein: the bag sealing mechanism comprises an electric heating wire (41) arranged at one side of a central hole of the annular piece (3), and a push rod (42) which can be close to or far from the electric heating wire (41) and is restrained on the annular piece (3), and the reciprocating movement direction of the push rod (42) is perpendicular to the length direction of the push rod.

12. The utility model provides a dustbin, includes box, its characterized in that: a garbage bag replacing device according to any one of claims 1 to 11 is provided at an upper portion of the casing.

13. A pet litter box comprising a housing (5), characterized in that: the inside of the shell (5) is provided with a faeces separation device (7) which is provided with a faeces outlet (711), and the inside of the shell (5) is also detachably provided with a dustbin as defined in claim 12 below the faeces outlet (711).

14. A pet litter box comprising a housing (5), characterized in that: the inside of the shell (5) is provided with a excrement separating device (7) and a excrement collecting box (8), and the excrement separating device (7) is provided with an excrement outlet (711) positioned above the excrement collecting box (8); a waste bag changing device according to any one of claims 1 to 11, which is located between the faeces outlet (711) and the faeces collecting box (8), is removably mounted inside the housing (5).

15. The pet litter box of claim 14, wherein: the excrement separating device (7) comprises a base (71) provided with the excrement outlet (711) and a rotating member (72) rotatably arranged on the base (71) around a basically horizontal rotation axis, the rotating member (72) is provided with an inner cavity (720), a first opening (722) communicated with the inner cavity (720) and an outlet (721), the first opening (722) is used for enabling pets to enter and exit the inner cavity (720), the outlet (721) is used for pouring out excrement in the inner cavity (720), and the rotating member (72) can rotate until the outlet (721) is correspondingly communicated with the excrement outlet (711); the rotating piece (72) is provided with a screen (73) positioned in the inner cavity (720).

16. The pet litter box of claim 15, wherein: one side of the screen (73) is rotatably connected with the rotating member (72) through a connecting shaft (733), the connecting shaft (733) is basically parallel to the rotating axis of the rotating member (72), and when the screen (73) rotates to the condition that part of the screen is contacted with the inner surface of the rotating member (72), the part of the screen (73) except the part is closely adjacent to or is adhered with the inner surface of the rotating member (72).