CN109178707B

CN109178707B - Garbage can capable of separating solid from liquid

Info

Publication number: CN109178707B
Application number: CN201810951830.0A
Authority: CN
Inventors: 王博; 仲深意; 颜廷松; 焦延涛; 李智勇
Original assignee: North China University of Water Resources and Electric Power
Current assignee: North China University of Water Resources and Electric Power
Priority date: 2018-08-21
Filing date: 2018-08-21
Publication date: 2021-09-14
Anticipated expiration: 2038-08-21
Also published as: CN109178707A

Abstract

The invention relates to the field of garbage treatment equipment, in particular to a garbage can capable of separating solid from liquid. Comprises an outer barrel, an inner barrel, a separation system and a collection system; a plurality of dewatering holes are arranged on the side wall of the inner barrel, and a rotating shaft is arranged between the bottom wall of the inner barrel and the bottom wall of the outer barrel; the separation system comprises a torsion spring sleeved on the rotating shaft and a sliding shaft penetrating through a sliding hole in the side wall of the outer barrel, a first bevel gear is arranged at one end of the sliding shaft, a second bevel gear which can be meshed and connected with the first bevel gear is arranged on the rotating shaft, and a crank for shaking the sliding shaft to rotate is arranged at the other end of the sliding shaft; the collecting system comprises a water collecting tank and a sewage cup, the water collecting tank is strip-shaped and is spirally distributed along the inner edge of the side wall of the outer barrel, a clamping groove used for installing the sewage cup in a matched mode is arranged on the outer edge of the side wall of the outer barrel and at the position of the lower end of the water collecting tank, and a drain hole communicated with the lower end of the water collecting tank and the sewage cup is further formed in the side wall of the outer barrel. The invention can reduce the use of plastic garbage bags and separate solid and liquid of garbage so as to avoid the generation of foul smell.

Description

Garbage can capable of separating solid from liquid

Technical Field

The invention relates to the field of garbage treatment equipment, in particular to a garbage can capable of separating solid from liquid.

Background

The garbage can is an essential household appliance in life and can be placed in a listening position of a kitchen, a living room, a dining room and a toilet so as to conveniently treat household garbage generated in life. Similarly, the garbage can is also a necessary object in public places, is convenient for accommodating garbage and cultivates good environmental awareness of people.

The garbage can in daily life is only a simple can body and is sleeved with a plastic garbage bag, and the plastic bag can be lifted out of the can body and discarded after the garbage bag is filled with garbage. The garbage can is convenient to use, but still has the following problems: on one hand, the plastic bag is white pollution which is more serious in harm and more difficult to treat, large-area soil pollution can be generated when the plastic bag is buried and treated along with garbage, a large amount of inhalable particles can be generated when the plastic bag is incinerated and treated along with the garbage, and the human health is directly or indirectly harmed; on the other hand, people can't classify when throwing away rubbish to the garbage bin, no matter be liquid rubbish and solid rubbish like this all can gather in a staving, when solid rubbish and liquid rubbish mix together, if not in time handle, the rubbish just sends the foul smell easily, and the rubbish is easy to rot and sends the stink, breeds more bacterium easily, especially in the mixed rubbish of hot day smelly more fast, can influence the quality of life like this.

Disclosure of Invention

The invention aims to provide a garbage can capable of realizing solid-liquid separation, which can reduce the use of plastic garbage bags and can separate solid and liquid of garbage so as to avoid the generation of foul odor.

In order to solve the technical problems, the invention adopts the technical scheme that: a garbage can capable of performing solid-liquid separation comprises an outer barrel, an inner barrel, a separation system and a collection system, wherein the inner barrel is sleeved in an inner cavity of the outer barrel and used for containing garbage, the separation system is used for driving the inner barrel to rotate so as to perform solid-liquid separation on the garbage in the inner barrel through centrifugal force, and the collection system is used for collecting liquid after the solid-liquid separation; a plurality of dewatering holes are arranged on the side wall of the inner barrel at intervals, the bottom wall of the inner barrel is fixedly connected with the upper end of a rotating shaft which is vertically distributed, and the lower end of the rotating shaft is rotatably inserted on the bottom wall of the outer barrel; the separation system comprises a torsion spring sleeved on the rotating shaft and a sliding shaft which is slidably arranged in a sliding hole formed in the side wall of the outer barrel in a penetrating manner, one end of the torsion spring is fixed with the outer barrel, the other end of the torsion spring is fixed with the rotating shaft, the sliding shaft is distributed along the horizontal direction, a first bevel gear is fixedly arranged at one end of the sliding shaft, which is positioned in the inner cavity of the outer barrel, a second bevel gear which can be meshed and connected with the first bevel gear is arranged on the rotating shaft, and a crank for shaking the sliding shaft to rotate is arranged at one end of the sliding shaft, which is positioned outside the outer barrel; the collecting system comprises a water collecting tank and a sewage cup, the water collecting tank is strip-shaped and is spirally distributed along the inner edge of the side wall of the outer barrel, a clamping groove used for installing the sewage cup in a matched mode is arranged on the outer edge of the side wall of the outer barrel and at the position of the lower end of the water collecting tank, and a drain hole communicated with the lower end of the water collecting tank and the sewage cup is further formed in the side wall of the outer barrel.

Preferably, outer bucket and interior bucket are cylindrical and coaxial distribution, are equipped with the bung that can open and shut at the top of outer bucket, and the position that corresponds interior bucket lateral wall inner edge on the bung has seted up the perforation, and the cooperation is installed in the perforation and is used for the clear stifled system in dehydration hole, and clear stifled system is including the brush-holder stud that follows the distribution in the interior bucket lateral wall of laminating, and the brush-holder stud is equipped with the brush hair towards one side of interior bucket, is equipped with the annular positioning groove that supplies the lower extreme cooperation location of brush-holder stud on the diapire of interior bucket.

Preferably, the cross section of the brush rod is arc-shaped corresponding to the inner edge of the side wall of the inner barrel, the brush rod comprises a body for fixing bristles and a spatula which is fixed on the body and positioned at two sides of the bristles and used for cleaning the inner edge of the side wall of the inner barrel, the lower end of the body is provided with a cavity and an opening connected with the cavity, and a rolling ball which is in sliding fit with the annular positioning groove and a top spring which is used for ejecting the lower edge of the rolling ball from the opening are arranged in the cavity.

Preferably, a first bearing is arranged in the sliding hole, an outer ring of the first bearing is fixed with the sliding hole, and an inner ring of the first bearing is connected with the sliding shaft through a spline structure.

Preferably, a pressure spring for pulling the first bevel gear toward the second bevel gear and engaging with the second bevel gear is sleeved between the first bevel gear and the side wall of the outer tub on the sliding shaft.

Preferably, the bottom of the outer barrel is provided with a shaft seat for the lower end of the rotating shaft to be in running fit, a second bearing is installed between the outer edge of the side wall of the inner barrel and the inner edge of the side wall of the outer barrel in a matching mode, and the installation position of the second bearing is located above the upper end of the water collecting tank.

Preferably, the bottom of the clamping groove is provided with a dovetail slide rail, the dovetail slide rail is distributed along the direction tangent to the side wall of the outer barrel, and the bottom of the sewage cup is provided with a dovetail slide groove matched with the dovetail slide rail.

Preferably, the gap between the water collecting groove and the outer edge of the side wall of the inner barrel is 0.5-0.8 mm.

Advantageous effects

The inner barrel is provided with a plurality of dehydration holes and is rotationally arranged in the outer barrel, the rotating shaft and the inner barrel slowly rotate by shaking the crank handle to enable the torsion spring to generate certain deformation and then separate the first bevel gear and the second bevel gear, so that the rotating shaft and the inner barrel can rotate at high speed under the action of the torsion spring, the garbage in the inner barrel is subjected to solid-liquid separation under the action of centrifugal force, the solid is left in the inner barrel, the liquid is thrown out of the dehydration holes and then collected by the water collecting grooves distributed on the side wall of the outer barrel, the liquid enters the sewage cup through the water collecting grooves, and the liquid garbage can be poured into a household sewer after the sewage cup is taken down from the outer barrel. Thereby avoiding the solid garbage and the liquid garbage from mixing together for a long time to generate unpleasant odor. Solid waste in the inner barrel can be directly accepted by containers such as cloth bags or baskets and transferred into a waste station in a social area through dehydration, and the transfer container is not easily polluted by liquid waste and can be used repeatedly, so that the use of plastic bags is reduced, and the purpose of environmental protection is achieved.

The water collecting grooves are spirally distributed on the inner edge of the side wall of the outer barrel, and the liquid garbage can fall into the nearby water collecting grooves after being thrown out from the dewatering holes, so that the condition that the liquid garbage collides with the side wall of the outer barrel in the throwing-out process and enters the inner barrel again to cause insufficient solid-liquid separation is avoided, and the solid-liquid separation efficiency of the invention is improved. In practical application, the solid-liquid separation of the garbage can be completed by the high-speed rotation of the inner barrel generated by the deformation and the strengthening of the torsion spring and the release.

The invention also comprises a blockage cleaning system for cleaning the dewatering holes, wherein the upper end of a brush rod in the blockage cleaning system is limited by a through hole on the barrel cover, a rolling ball at the lower end is in rolling fit with an annular limiting groove on the bottom wall of the inner barrel for limiting, and all the dewatering holes on the side wall of the inner barrel can be cleaned by bristles on the brush rod by pressing the brush rod downwards and rotating the inner barrel. Thereby avoiding the condition of unsmooth solid-liquid separation caused by the blockage of the dehydration holes after multiple uses and prolonging the service life of the invention.

Drawings

FIG. 1 is a schematic longitudinal sectional view of the present invention;

FIG. 2 is a schematic longitudinal sectional view of the lower end of a brush bar according to the present invention;

FIG. 3 is a schematic cross-sectional view of a brush bar according to the present invention;

the labels in the figure are: 1. the device comprises a barrel cover, 2, a brush rod, 201, a cavity, 202, a top spring, 203, a rolling ball, 204, an opening, 205, a body, 206, a spatula, 3, an outer barrel, 4, a water collecting groove, 5, a water discharging hole, 6, a sewage cup, 7, a dovetail-shaped sliding rail, 8, a second bevel gear, 9, a rotating shaft, 10, a torsion spring, 11, a shaft seat, 12, a first bevel gear, 13, a pressure spring, 14, a first bearing, 15, a crank, 16, a sliding shaft, 17, an annular positioning groove, 18, a dewatering hole, 19, an inner barrel, 20, a second bearing, 21 and bristles.

Detailed Description

As shown in fig. 1 to 3, the trash can capable of solid-liquid separation according to the present invention includes an outer can 3 used as a housing and an inner can 19 used as a container for putting trash in. The outer barrel 3 and the inner barrel 19 are both cylindrical barrels with open tops and closed bottoms, and the inner barrel 19 is coaxially sleeved in the inner cavity of the outer barrel 3 and can rotate relative to the outer barrel 3. A plurality of dewatering holes 18 are spaced on the side wall of the inner tub 19, so that the liquid garbage in the inner tub 19 can be thrown out of the inner tub 19 through the dewatering holes 18 during the high-speed rotation of the inner tub 19, thereby completing the solid-liquid separation of the garbage in the inner tub 19.

In this embodiment, the rotating shaft 9 is disposed at the center of the bottom wall of the inner barrel 19, the upper end of the rotating shaft 9 is fixedly connected with the bottom of the inner barrel 19, the lower end of the rotating shaft 9 is inserted into the shaft seat 11 fixed at the center of the bottom wall of the outer barrel 3, the second bearing 20 is disposed between the top of the outer barrel 3 and the top of the inner barrel 19, the outer ring of the second bearing 20 is fixed with the inner edge of the side wall of the outer barrel 3, and the inner ring is fixed with the outer edge of the side wall of the inner barrel 19, so that the resistance of the inner barrel 19 in rotation relative to the outer barrel 3 can be reduced through the actions of the shaft seat 11 and the second bearing 20, and the inner barrel 19 can generate a relatively high rotation speed under the same driving.

The present invention further includes a separation system for driving the inner tub 19 to rotate at a high speed and a collection system for collecting the liquid garbage after the solid-liquid separation.

The separating system can make the inner barrel 19 rotate at high speed without the help of equipment such as a motor, and comprises a torsion spring 10 sleeved on the rotating shaft 9 and a sliding shaft 16 which is slidably arranged in a sliding hole arranged on the side wall of the outer barrel 3 in a penetrating way. One end of the torsion spring 10 is fixed with the outer barrel 3, the other end is fixed with the rotating shaft 9, when the rotating shaft 9 is stressed to continuously rotate towards one direction, the torsion spring 10 correspondingly generates deformation and accumulates potential energy, and after the torsion spring 10 deforms to the limit and the external force for controlling the rotating shaft 9 to rotate disappears, the rotating shaft 9 can drive the inner barrel 19 to rotate at a high speed under the action of the potential energy of the torsion spring 10. The sliding shaft 16 is used for providing the power for the rotation of the rotating shaft 9, the sliding shaft 16 is distributed along the horizontal direction, a first bevel gear 12 is fixedly arranged at one end of the sliding shaft 16 positioned in the inner cavity of the outer barrel 3, a second bevel gear 8 which can be meshed and connected with the first bevel gear 12 is arranged on the rotating shaft 9, and a crank 15 for shaking the sliding shaft 16 to rotate is arranged at one end of the sliding shaft 16 positioned outside the outer barrel 3. The rotation shaft 9 is rotated and the torsion spring 10 is deformed by pushing the sliding shaft 16 into the inner cavity of the outer tub 3 and engaging the first bevel gear 12 with the second bevel gear 8, and then rocking the crank 15.

In this embodiment, the first bearing 14 is disposed in the sliding hole, the outer ring of the first bearing 14 is fixed to the sliding hole, and the inner ring of the first bearing 14 is connected to the sliding shaft 16 through a spline structure, so that the sliding shaft 16 can slide in the sliding hole, and the clutch between the first bevel gear 12 and the second bevel gear 8 can be controlled. A pressure spring 13 for pulling the first bevel gear 12 towards the second bevel gear 8 and meshing with the second bevel gear 8 is sleeved between the side wall of the outer tub 3 and the first bevel gear 12 on the sliding shaft 16, the pressure spring 13 is in a compressed state, the first bevel gear 12 can be moved to the second bevel gear 8 and meshed through the thrust of the pressure spring 13 under the condition that the sliding shaft 16 is not stressed, and when the torsion spring 10 generates enough deformation to accumulate enough potential energy, the first bevel gear 12 and the second bevel gear 8 can be separated by drawing the sliding shaft 16 outwards through the crank 15, so that the potential energy of the torsion spring 10 is released. The arrangement of the pressure spring 13 not only enables the connection between the sliding shaft 16 and the outer barrel 3 to be more compact, but also does not consider the problem of meshing between the first bevel gear 12 and the second bevel gear 8 in the process of rotating the rotating shaft 9 through the crank 15, so that the operation is more labor-saving and convenient.

The collection system of the present invention comprises a water collection tank 4 and a sewage cup 6. The water collecting groove 4 is strip-shaped and is spirally distributed along the inner edge of the side wall of the outer barrel 3. The water collecting tank 4 in the embodiment is formed by a spiral plate which is obliquely fixed on the inner edge of the side wall of the outer barrel 3 and is distributed by taking the central axis of the outer barrel 3 as the center, the lower edge of the spiral plate is attached and fixed with the inner edge of the side wall of the outer barrel 3, one side of the spiral plate, which faces the side wall of the outer barrel 3, and the side wall of the outer barrel 3 jointly form the oblique V-shaped water collecting tank 4, the distance between the upper edge of the spiral plate and the outer edge of the side wall of the inner barrel 19 is controlled to be 0.5-0.8mm, and liquid garbage is prevented from falling to the bottom of the outer barrel. In order to more strictly control the liquid waste to fall into the lower end of the outer barrel 3, a partition plate can be added between the outer edge of the lower end of the inner barrel 19 and the side wall of the outer barrel 3 to completely separate the liquid waste, so as to completely avoid the corrosion of the shaft seat 11, the rotating shaft 9, the first bevel gear 12, the second bevel gear 8, the sliding shaft 16 and other components caused by the removal of the liquid waste. The outer edge of the side wall of the outer barrel 3 and the lower end position of the water collecting groove 4 are provided with clamping grooves, dovetail-shaped sliding rails 7 are arranged at the bottoms of the clamping grooves, the dovetail-shaped sliding rails 7 are distributed along the direction tangent to the side wall of the outer barrel 3, and dovetail-shaped sliding grooves matched with the dovetail-shaped sliding rails 7 are arranged at the bottom of the sewage cup 6. Therefore, the sewage cup 6 is arranged on the side wall of the outer barrel 3 in a matched mode through the matching of the dovetail-shaped slide rail 7 and the dovetail-shaped slide groove, the stability of combination of the sewage cup 6 and the outer barrel 3 can be guaranteed in the process that the inner barrel 19 rotates at a high speed, and the sewage in the sewage cup 6 is prevented from being scattered. The liquid garbage in the water collecting tank 4 is guided into the sewage cup 6 through a drain hole 5 opened at a side wall of the outer tub 3 and communicating a lower end of the water collecting tank 4 with the sewage cup 6. In the practical application, after liquid waste reaches certain capacity in the sewage cup 6, still can take out the sewage cup 6 from outer bucket 3 lateral wall through swallow-tail type slide rail 7 and swallow-tail type spout, insert back again after clearing up sewage cup 6, the operation is very convenient.

In this embodiment, the top of the outer barrel 3 is provided with a barrel cover 1 which can be opened and closed, a through hole is arranged on the barrel cover 1 corresponding to the inner edge of the side wall of the inner barrel 19, and a blockage removing system for the dewatering hole 18 is arranged in the through hole in a matching manner. In the normal use state of the invention, the blockage clearing system is additionally arranged, and after the invention is used for a plurality of times, the blockage clearing system is inserted into the through hole and the inner barrel 19 is rotated to complete blockage clearing. The blockage removing system comprises a brush rod 2 which is distributed along the inner edge of the side wall of the inner barrel 19, bristles 21 are arranged on one side of the brush rod 2 facing the inner barrel 19, the cross section of the brush rod 2 is in an arc shape corresponding to the inner edge of the side wall of the inner barrel 19, and the blockage removing system comprises a body 205 used for fixing the bristles 21 and a scraper 206 which is fixed on the body 205 and positioned at the two sides of the bristles 21 and used for cleaning the inner edge of the side wall of the inner barrel 19. The brush 21 is mainly used for inserting into the dewatering hole 18 and dredging and cleaning the dewatering hole 18, and the scraper 206 is attached to the inner edge of the side wall of the inner barrel 19 and is mainly used for removing dirt attached to the inner edge of the side wall of the inner barrel 19.

In order to keep the bristles 21 and the spatula 206 always attached to the side wall of the inner barrel 19 during cleaning, the brush rod 2 in this embodiment is made of rigid material, and both ends of the brush rod 2 are provided with appropriate limiting measures to avoid the separation of the brush rod 2 from the side wall of the inner barrel 19. The upper end of the brush rod 2 is limited mainly by the perforation on the barrel cover 1, and the bottom wall of the inner barrel 19 is provided with an annular positioning groove 17 for matching and positioning the lower end of the brush rod 2. The lower end of the body 205 of the brush rod 2 is provided with a cavity 201 and an opening 204 connected with the cavity 201, a rolling ball 203 used for being in sliding fit with the annular positioning groove 17 and a top spring 202 used for ejecting the lower edge of the rolling ball 203 from the opening 204 are arranged in the cavity 201, the diameter of the rolling ball 203 is larger than that of the opening 204, so that the bottom part of the rolling ball 203 is exposed out of the cavity 201 through the opening 204, and the rolling ball 203 is in rolling fit with the bottom part of the annular positioning groove 17. In the blockage cleaning process, the lower end of the brush rod 2 is inserted into the inner cavity of the inner barrel 19 through the through hole, the rolling ball 203 falls into the annular positioning groove 17, the top of the brush rod 2 is continuously pressed down and the inner edge of the side wall of the inner barrel 19 and the dewatering hole 18 are cleaned under the state that the position of the brush rod 2 is fixed by matching with the rotation of the inner barrel 19. Meanwhile, a proper amount of clear water can be used for washing so as to clean and wash the whole garbage can.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a but solid-liquid separation's garbage bin which characterized in that: comprises an outer barrel (3), an inner barrel (19) which is sleeved in the inner cavity of the outer barrel (3) and is used for containing garbage, a separation system which is used for driving the inner barrel (19) to rotate so as to carry out solid-liquid separation on the garbage in the inner barrel (19) through centrifugal force, and a collection system which is used for collecting liquid after the solid-liquid separation; a plurality of dewatering holes (18) are arranged on the side wall of the inner barrel (19) at intervals, the bottom wall of the inner barrel (19) is fixedly connected with the upper end of a rotating shaft (9) which is vertically distributed, and the lower end of the rotating shaft (9) is rotatably inserted on the bottom wall of the outer barrel (3); the separation system comprises a torsion spring (10) sleeved on the rotating shaft (9) and a sliding shaft (16) slidably penetrating through a sliding hole formed in the side wall of the outer barrel (3), one end of the torsion spring (10) is fixed with the outer barrel (3), the other end of the torsion spring is fixed with the rotating shaft (9), the sliding shaft (16) is distributed along the horizontal direction, a first bevel gear (12) is fixedly arranged at one end, located in the inner cavity of the outer barrel (3), of the sliding shaft (16), a second bevel gear (8) capable of being in meshed connection with the first bevel gear (12) is arranged on the rotating shaft (9), and a crank (15) used for shaking the sliding shaft (16) to rotate is arranged at one end, located outside the outer barrel (3), of the sliding shaft (16); the collecting system comprises a water collecting tank (4) and a sewage cup (6), wherein the water collecting tank (4) is in a strip shape and is spirally distributed along the inner edge of the side wall of the outer barrel (3), the water collecting tank (4) is fixed in the side wall of the outer barrel (3) in an inclined mode, the upper edge of the water collecting tank is distributed by taking the central axis of the outer barrel (3) as the center, the lower edge of the spiral plate is fixed in the side wall of the outer barrel (3) in an attaching mode, the spiral plate and the side wall of the outer barrel (3) face one side of the side wall of the outer barrel (3) form the water collecting tank (4) in an inclined V shape, a clamping groove used for installing the sewage cup (6) in a matching mode is arranged at the position of the lower end, located on the side wall of the outer barrel (3), and a drain hole (5) communicated with the lower end of the water collecting tank (4) and the sewage cup (6) is further formed in the side wall of the outer barrel (3).

2. The solid-liquid separable trash can of claim 1, wherein: outer bucket (3) and interior bucket (19) are cylindrical and coaxial distribution, be equipped with bung (1) that can open and shut at the top of outer bucket (3), the position of following has seted up the perforation in bucket (19) lateral wall corresponding on bung (1), the cooperation is installed in the perforation and is used for the clear stifled system in dehydration hole (18), clear stifled system is including laminating interior bucket (19) lateral wall in along distributed brush-holder stud (2), one side that brush-holder stud (2) orientation was interior bucket (19) is equipped with brush hair (21), be equipped with annular positioning groove (17) that supply the lower extreme cooperation location of brush-holder stud (2) on the diapire of interior bucket (19).

3. The solid-liquid separable trash can of claim 2, wherein: the cross section of the brush rod (2) is arc-shaped corresponding to the inner edge of the side wall of the inner barrel (19), the brush rod comprises a body (205) used for fixing bristles (21) and a spatula (206) which is fixed on the body (205) and positioned at the two sides of the bristles (21) and used for cleaning the inner edge of the side wall of the inner barrel (19), the lower end of the body (205) is provided with a cavity (201) and an opening (204) connected with the cavity (201), and a rolling ball (203) which is in sliding fit with the annular positioning groove (17) and a top spring (202) which is used for ejecting the lower edge of the rolling ball (203) from the opening (204) are arranged in the cavity (201).

4. The solid-liquid separable trash can of claim 1, wherein: a first bearing (14) is arranged in the sliding hole, the outer ring of the first bearing (14) is fixed with the sliding hole, and the inner ring of the first bearing (14) is connected with the sliding shaft (16) through a spline structure.

5. The solid-liquid separable trash can of claim 4, wherein: a pressure spring (13) which is used for pulling the first bevel gear (12) to the direction of the second bevel gear (8) and is meshed with the second bevel gear (8) is sleeved between the first bevel gear (12) and the side wall of the outer barrel (3) on the sliding shaft (16).

6. The solid-liquid separable trash can of claim 1, wherein: the bottom of the outer barrel (3) is provided with a shaft seat (11) for the lower end of the rotating shaft (9) to be in running fit, a second bearing (20) is installed between the outer edge of the side wall of the inner barrel (19) and the inner edge of the side wall of the outer barrel (3) in a matching mode, and the installation position of the second bearing (20) is located above the upper end of the water collecting tank (4).

7. The solid-liquid separable trash can of claim 1, wherein: the bottom of the clamping groove is provided with a dovetail slide rail (7), the dovetail slide rail (7) is distributed along the direction tangent to the side wall of the outer barrel (3), and the bottom of the sewage cup (6) is provided with a dovetail slide groove matched with the dovetail slide rail (7).

8. The solid-liquid separable trash can of claim 1, wherein: the clearance between the water collecting tank (4) and the outer edge of the side wall of the inner barrel (19) is 0.5-0.8 mm.