CN215844732U

CN215844732U - Plastic bucket self-cleaning device

Info

Publication number: CN215844732U
Application number: CN202121407357.3U
Authority: CN
Inventors: 严焕标; 吴琪峰; 王文杰
Original assignee: Zhejiang Baili Plastic Co ltd
Current assignee: Zhejiang Baili Plastic Co ltd
Priority date: 2021-06-24
Filing date: 2021-06-24
Publication date: 2022-02-18
Anticipated expiration: 2031-06-24

Abstract

The utility model discloses an automatic cleaning device for a plastic barrel, which comprises a cleaning pool, a filter tank, a filter piece, a barrel seat, a flexible pad, an outer clamping component and a cleaning component, wherein the filter tank is arranged in the cleaning pool; a conical table is arranged at the bottom of the cleaning pool, and a pedestal is arranged on the conical table; a plurality of water inlets are formed in the side of the pedestal; the cleaning assembly comprises a flushing pipe and a supporting component; the surface of the flushing pipe is provided with a plurality of inclined grooves which are distributed in a circumferential manner; the top of the flushing pipe is provided with an annular groove; a plurality of balls are arranged in the annular groove; the water inlet is communicated with the inside of the flushing pipe; the flushing pipe is connected with the filter tank through a water pump; according to the utility model, the plastic bucket is vertically arranged on the flexible pad, the flushing pipe penetrates into the plastic bucket for flushing, the flushing pipe rotates automatically during flushing so as to enable water flow to fully clean the plastic bucket, and the bucket opening faces downwards due to the vertical arrangement of the plastic bucket, so that the water flow is automatically discharged after cleaning, impurities are prevented from being stuck in the plastic bucket again, and the cleaning effect is improved.

Description

Plastic bucket self-cleaning device

Technical Field

The utility model belongs to the field of plastic barrel processing, and particularly relates to an automatic cleaning device for a plastic barrel.

Background

The plastic barrel cleaning device in the prior art is used for manually tearing and peeling off a layer of film-shaped solidified plastic adhered in a used plastic barrel by adopting a simple removing tool after the used plastic barrel is fully soaked with water. The plastic bucket cleaning mode in the prior art can also finish peeling and cleaning of the plastic bucket, but has low efficiency, high labor intensity, incapability of recycling cleaning water and unsatisfactory use effect.

The existing automatic cleaning device for the plastic barrel comprises a liquid pool and a turbid liquid pool, wherein the two pools are communicated through a filter residue plate; a roller group is arranged in the turbid liquid pool, and the motor is in transmission connection with the roller group through a transmission belt; the circumferential surface of the plastic barrel is erected on the roller group; the water inlet of the water pump is communicated with the clear liquid tank, the water outlet is connected with a horn-shaped high-pressure water spraying head, and the water spraying port faces to the barrel mouth. The inside of the whole plastic barrel can be cleaned by high-pressure water spraying while rotating, and the cleaning water can be recycled; however, the plastic bucket is transversely arranged, water flow cannot be timely discharged after cleaning, impurities still remain in the bucket, and the cleaning effect is to be improved.

SUMMERY OF THE UTILITY MODEL

The utility model provides an automatic cleaning device for a plastic barrel, which aims to overcome the defects of the prior art and improve the cleaning effect.

The technical scheme provided by the utility model is as follows: an automatic cleaning device for a plastic barrel comprises a cleaning pool, a filter pool arranged on one side of the cleaning pool, a filter piece arranged between the cleaning pool and the filter pool, a barrel seat arranged above the cleaning pool, a flexible pad arranged on the barrel seat, a plurality of outer clamping assemblies symmetrically fixed on two sides of the barrel seat, and a cleaning assembly positioned right below the barrel seat; the barrel seat is annular and the surface of the barrel seat is inclined; a conical table is arranged at the bottom of the cleaning pool, and a pedestal is arranged on the conical table; a plurality of water inlets are formed in the side of the pedestal; the cleaning assembly comprises a flushing pipe inserted in the pedestal and a supporting component positioned below the flushing pipe; the surface of the flushing pipe is provided with a plurality of inclined grooves which are distributed in a circumferential manner; the top of the flushing pipe is provided with an annular groove; a plurality of balls are arranged in the annular groove; the water inlet is communicated with the inside of the flushing pipe; the flushing pipe is connected with the filter tank through a water pump.

In the scheme, the plastic barrel is inverted on the flexible pad, the water pump supplies water to the water inlet from the filter tank, and water flows out of the inclined groove to wash the plastic barrel after entering the washing pipe; when the water flow is sprayed out of the inclined groove, the water inlet pipe is driven to rotate, so that the plastic barrel is fully contacted with the water flow, and the cleaning effect is ensured; the top of the flushing pipe is contacted with the plastic barrel through a ball, so that the plastic barrel is prevented from being abraded; the water flow automatically flows into the cleaning tank after cleaning, no sewage residue exists in the barrel, the water flow flows into the filter tank after being filtered by the filter element, and the cleaning water can be recycled.

Further, a connecting ring is arranged at the bottom of the flushing pipe; the supporting component comprises a ring sleeve sleeved outside the connecting ring, a plurality of cylinders arranged at the bottom of the ring sleeve, a plurality of supporting springs sequentially sleeved outside each cylinder, a connecting plate positioned at the bottom of each cylinder, and a driving piece for driving the connecting plate to move; the driving piece is fixed at the bottom of the cleaning pool; the supporting spring is positioned between the connecting plate and the ring sleeve; the connecting ring is rotatably connected with the ring sleeve.

Before the plastic barrel is placed on the flexible pad, the driving piece drives the connecting plate to move downwards so as to move the flushing pipe downwards, and the plastic barrel is prevented from colliding with the flushing pipe to damage the plastic barrel and the flushing pipe when being placed; after the outer clamping component fixes the plastic barrel, the driving piece drives the flushing pipe to move upwards, and the ball is contracted by the supporting spring after contacting the bottom of the plastic barrel, so that the flushing pipe can adapt to cleaning of the plastic barrels with different heights, and the practicability of the flushing pipe is improved.

Furthermore, the outer clamping assembly comprises a motor fixed on the barrel seat, a shaft sleeve with one end connected with a main shaft of the motor, a sliding block in threaded connection with the shaft sleeve, outer clamping pieces respectively rotatably connected to two sides of the sliding block, a sliding groove arranged in the sliding block, a locking piece inserted in the sliding groove and locking pieces symmetrically positioned at two sides of the locking piece; a torsion spring is arranged between the outer clamping piece and the sliding block; a clamping groove is formed at the joint of the outer clamping piece and the sliding block; the locking block comprises a square block capable of sliding in the sliding groove, a square groove arranged on the square block and a clamping block arranged at one end of the square block; the locking piece comprises a push post inserted in the middle of the sliding groove, a reset spring sleeved on the push post, extension bars symmetrically arranged on two sides of the push post, a first inclined plane arranged at one end of the extension bar and a second inclined plane arranged on the back side of the first inclined plane; two ends of the reset spring are respectively contacted with the push column and the inner wall of the sliding chute; one of the first inclined plane and the second inclined plane is inserted into the square groove; the clamping block is embedded with the clamping groove; and two ends of the torsion spring are respectively connected with the outer clamping piece and the sliding block.

After the plastic barrel is arranged on the flexible pad, the motor drives the shaft sleeve to rotate, so that the sliding block is close to the plastic barrel, the end part of the outer clamping piece is in contact with the plastic barrel and then rotates, and the opening angle of the outer clamping piece is changed according to different barrel diameters of the plastic barrel, so that the plastic barrel has good fixing effect on plastic barrels with different specifications; after the sliding block moves to the push column to contact the plastic barrel, the push column slides in the sliding groove, the second inclined plane is inserted into the square groove, the square block is pushed to transversely move, the clamping block is embedded into the clamping groove, the outer clamping piece is prevented from continuously rotating, the plastic barrel cannot shake in the cleaning process, and the cleaning work is ensured to be normally carried out.

Furthermore, one end of the outer clamping piece, which is far away from the sliding block, is rotatably connected with a hollow roller; an extrusion block is inserted into the outer clamping piece in a penetrating way; a tension spring is arranged between the extrusion block and the inner wall of the outer clamping piece; one end of the extrusion block is contacted with the hollow roller; the top of the extrusion block penetrates through the outer clamping piece; the top of the extrusion block is rotatably connected with a connecting rod; one end of the connecting rod is rotatably connected with a cylinder; the bottom of the cylinder is provided with a returning groove; a push plate is arranged at the top of the push column; the sliding block is rotatably connected with two rotating rods; the two rotating rods are symmetrically positioned at two sides of the push plate; the top of the sliding block is provided with a short column; the short column is positioned in the return groove; the joint of the sliding block and the outer clamping piece is coaxial with the short column; the cylinder is arranged coaxially with the short column; one end of the rotating rod is contacted with the cylinder.

When the push pillar contacts the plastic barrel and slides in the sliding groove, the push plate contacts one end of the rotating rod and enables the rotating rod to rotate, the other end of the rotating rod pushes the cylinder to move, and then the connecting rod pushes the extrusion block to move, the extrusion block extrudes the hollow roller to enable the hollow roller to be tightly attached to the plastic barrel so as to further limit the plastic barrel to enable the plastic barrel to be tightly attached to the flexible pad and avoid splashing of water flowers in the cleaning process.

Furthermore, the filtering piece comprises a filter screen positioned between the cleaning tank and the filter tank, a collecting box arranged at the bottom of the filter screen, and handles arranged on two sides of the top of the filter screen; the collecting box is positioned in the cleaning pool; the water in the cleaning pool is located the entering filtering pond by the filter screen, and impurity stays in collecting the box, lifts the handle and can take out filtering piece, conveniently clears up the impurity in collecting the box, and then reaches the purpose that promotes quality of water in order to guarantee the cleaning performance.

In conclusion, the plastic bucket is vertically arranged on the flexible pad, the flushing pipe penetrates into the plastic bucket to be flushed, the flushing pipe rotates automatically during flushing so that water flow can fully clean the plastic bucket, and the bucket opening faces downwards due to the vertical arrangement of the plastic bucket, so that the water flow after cleaning is automatically discharged, impurities are prevented from being stuck in the plastic bucket again, and the cleaning effect is improved.

Drawings

Fig. 1 is a schematic cross-sectional structure of the present invention.

Fig. 2 is a partially enlarged view of a portion a in fig. 1.

Fig. 3 is a schematic structural view of the cleaning assembly in fig. 1.

Fig. 4 is a partially enlarged view of a portion B in fig. 3.

Fig. 5 is a schematic cross-sectional view of the cleaning assembly shown in fig. 1.

Fig. 6 is a schematic structural view of the outer clamping assembly of fig. 1.

Fig. 7 is a schematic cross-sectional view of the outer clamping assembly shown in fig. 1.

Fig. 8 is a cross-sectional view of the outer clamping assembly of fig. 1 from another perspective.

Fig. 9 is a partially enlarged view of a portion C in fig. 8.

Fig. 10 is a schematic view of the filter element of fig. 1.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.

As shown in fig. 1-10, an automatic cleaning device for plastic barrels comprises a cleaning tank 1, a filter tank 2 arranged on one side of the cleaning tank 1, a filter member 3 arranged between the cleaning tank 1 and the filter tank 2, a barrel seat 4 arranged above the cleaning tank 1, a flexible pad 5 arranged on the barrel seat 4, a plurality of outer clamping assemblies 6 symmetrically fixed on two sides of the barrel seat 4, and a cleaning assembly 7 positioned right below the barrel seat 4; the barrel seat 4 is annular and the surface of the barrel seat is inclined; a conical table 11 is arranged at the bottom of the cleaning pool 1, and a pedestal 12 is arranged on the conical table 11; a plurality of water inlets 13 are formed in the side of the pedestal 12; the cleaning assembly 7 comprises a flushing pipe 71 inserted in the pedestal 12 and a supporting part 72 positioned below the flushing pipe 71; the surface of the flushing pipe 71 is provided with a plurality of inclined grooves 711 which are distributed in a circumferential manner; an annular groove 712 is formed at the top of the flushing pipe 71; the annular groove 712 has a plurality of balls 713 therein; the water inlet 13 is communicated with the interior of the flushing pipe 71; the flushing pipe 71 is connected with the filter chamber 2 through a water pump.

The flexible cushion 5 is made of rubber and is fixed on the surface of the barrel seat 4 to form an inverted cone shape, so that plastic barrels with different barrel diameters can be placed on the flexible cushion 5, and meanwhile, water flow can flow into the cleaning pool 1 along the surface of the inclined flexible cushion 5, so that impurities are prevented from being accumulated on the flexible cushion 5 to pollute a barrel opening; the top of the pedestal 12 is inserted above the barrel seat 4, so that the water flow is sprayed out from the inclined groove 711 and then is completely positioned in the plastic barrel, so as to fully utilize water resources and avoid splash; the bottom of the pedestal 12 is provided with a conical platform 11 to reduce the possibility of impurities accumulating on the pedestal 12, so that the impurities can be flushed to the filter member 3 along with water flow for collection; the inclined groove 711 is arranged in a way of inclining to the radial direction of the washing pipe 71, and the inclined direction and the inclined angle are constant, so that the washing pipe 71 can be pushed to rotate when water flows through, the plastic barrel is ensured to be in full contact with the water flow, and the cleaning effect is improved; balls 713 are provided in the annular groove 712 to reduce friction with the plastic bucket when the wash pipe 71 rotates.

Further, a connecting ring 714 is arranged at the bottom of the flushing pipe 71; the supporting component 72 comprises a ring sleeve 721 sleeved outside the connecting ring 714, a plurality of columns 722 arranged at the bottom of the ring sleeve 721, a plurality of supporting springs 723 sequentially sleeved outside the columns 722, a connecting plate 724 positioned at the bottom of the columns 722, and a driving component 725 for driving the connecting plate 724 to move; the driving piece 725 is fixed at the bottom of the cleaning pool 1; the supporting spring 723 is positioned between the connecting plate 724 and the ring sleeve 721; the connection ring 714 is rotatably connected to the collar 721.

The drive 725 is a commercially available cylinder; the cross section of the sliding sleeve is in an inverted T shape, and the cross section of the ring sleeve 721 corresponds to the cross section of the sliding sleeve; the bottom of the column 722 contacts the connecting plate 724 under the action of the supporting spring 723, so that the driving piece 725 drives the connecting plate 724 to move downwards, the ring sleeve 721 is driven to move downwards, the flushing pipe 71 can be driven to move downwards, the plastic bucket is prevented from being collided when being installed, the outer clamping component 6 fixes the plastic bucket, the driving piece 725 drives the flushing pipe 71 to move upwards, the plastic bucket does not need to be manually pressed before being fixed, the plastic bucket is prevented from moving upwards under the elastic force of the supporting spring 723, and the operation is convenient.

Further, the outer clamping assembly 6 comprises a motor 61 fixed on the barrel seat 4, a shaft sleeve 62 with one end connected with a main shaft of the motor 61, a sliding block 63 in threaded connection with the shaft sleeve 62, outer clamping members 64 respectively rotatably connected to two sides of the sliding block 63, a sliding slot 65 arranged inside the sliding block 63, a locking member 66 inserted in the sliding slot 65, and locking blocks 67 symmetrically positioned at two sides of the locking member 66; a torsion spring 68 is arranged between the outer clamping piece 64 and the sliding block 63; a clamping groove 641 is formed at the joint of the outer clamping piece 64 and the sliding block 63; the locking block 67 comprises a block 671 capable of sliding in the sliding groove 65, a square groove 672 arranged on the block 671 and a clamping block 673 arranged at one end of the block 671; the locking piece 66 comprises a pushing post 661 inserted in the middle of the sliding groove 65, a return spring 662 sleeved on the pushing post 661, an extension bar 663 symmetrically arranged on both sides of the pushing post 661, a first inclined plane 664 arranged at one end of the extension bar 663, and a second inclined plane 665 arranged at the back side of the first inclined plane 664; two ends of the return spring 662 are respectively contacted with the push post 661 and the inner wall of the sliding groove 65; one of the first inclined surface 664 and the second inclined surface 665 is inserted into the square groove 672; the fixture block 673 is embedded with the clamping groove 641; the two ends of the torsion spring 68 are respectively connected with the outer clamping piece 64 and the sliding block 63.

The bottom of the sliding block 63 falls on the barrel seat 4, so that the sliding block 63 is prevented from rotating along with the shaft sleeve 62, and smooth movement of the sliding block is ensured; one end of the outer clamping piece 64 is hinged to the side of the sliding block 63, and the sliding block 63 is in contact with the plastic barrel to always have pressure on the plastic barrel in the rotating process under the action of the torsion spring 68, so that the plastic barrel is kept stable, and meanwhile, the torsion spring 68 is also used for driving the outer clamping piece 64 to reset after the cleaning is finished; the first inclined plane 664 is positioned at the end part of the extension bar 663, when the push post 661 contacts the plastic barrel, the first inclined plane 664 is inserted into the square groove 672, and the fixture block 673 does not contact the outer clamping piece 64; after the push post 661 contacts the plastic barrel, the second inclined surface 665 is gradually inserted into the square groove 672 to push the clamping block 673 to be embedded into the clamping groove 641, so as to realize the locking of the outer clamping member 64; after the plastic barrel is cleaned, the motor 61 drives the sliding block 63 to reversely slide and reset, the reset spring 662 is used for resetting the pushing post 661, the first inclined surface 664 is reinserted into the square groove 672, the clamping block 673 is separated from the clamping groove 641, and the outer clamping piece 64 resets under the action of the torsion spring 68.

Further, one end of the outer clamping piece 64, which is far away from the sliding block 63, is rotatably connected with a hollow roller 642; an extrusion block 643 is inserted into the outer clamping piece 64; a tension spring 644 is arranged between the extrusion block 643 and the inner wall of the outer clamping piece 64; one end of the pressing block 643 contacts the hollow roller 642; the top of the pressing block 643 penetrates through the outer clamping piece 64; the top of the extrusion block 643 is rotatably connected with a connecting rod 645; one end of the connecting rod 645 is rotatably connected with a cylinder 646; the bottom of the cylinder 646 is provided with a returning groove 647; a push plate 666 is arranged at the top of the push post 661; two rotating rods 69 are rotatably connected to the sliding block 63; the two rotating rods 69 are symmetrically positioned at two sides of the push plate 666; the top of the sliding block 63 is provided with a short column 60; the stub 60 is located in the return groove 647; the joint of the sliding block 63 and the outer clamping piece 64 is coaxially arranged with the short column 60; the cylinder 646 is arranged coaxially with the stub 60; the turn bar 69 contacts the cylinder 646 at one end.

When the outer clamping piece 64 contacts the plastic barrel and rotates, the hollow roller 642 is attached to the surface of the plastic barrel, the surface of the plastic barrel is contracted, and the plastic barrel rotates relative to the outer clamping piece 64, so that the movement of the outer clamping piece 64 is not obstructed; the connecting rod 645 rotates around the short column 60, and the cylinder 646 is always in contact with the end of the rotating rod 69; the middle part of the rotating rod 69 is hinged on the top surface of the sliding block 63, and when the pushing post 661 contacts the plastic barrel to move, the pushing plate 666 moves along with the sliding rod and contacts the rotating rod 69 to rotate; the end of the rotating rod 69 pushes the cylinder 646 to move, so that the extrusion block 643 slides in the outer clamping piece 64, the hollow roller 642 is pressed tightly to increase the internal air pressure, and the outer part is tightly attached to the plastic barrel to fix the plastic barrel; the post 60 slides relative to the return groove 647 during movement of the cylinder 646 without interfering with the movement of the linkage 645.

Further, the filter element 3 comprises a filter screen 31 positioned between the cleaning tank 1 and the filter tank 2, a collecting box 32 arranged at the bottom of the filter screen 31, and handles 33 arranged at two sides of the top of the filter screen 31; the collecting box 32 is located in the washing tank 1.

When the device is used specifically, after the driving piece 725 drives the washing pipe 71 to move downwards, the plastic barrel is placed on the flexible pad 5, the motor 61 drives the sliding block 63 to be close to the plastic barrel, the hollow roller 642 on the outer clamping piece 64 is in contact with the plastic barrel, the outer clamping piece 64 rotates to adapt to the barrel diameter of the plastic barrel, the push post 661 is in contact with the plastic barrel and then slides in the sliding groove 65, the second inclined plane 665 is inserted into the square groove 672, the block 671 transversely moves to enable the clamping block 673 to be embedded into the clamping groove 641, and the outer clamping piece 64 is locked; meanwhile, the push plate 666 pushes the rotating rod 69 to rotate, the rotating rod 69 pushes the connecting rod 645 to move, the extrusion block 643 is enabled to press the hollow roller 642, the surface of the hollow roller 642 is tightly attached to the plastic barrel, and the plastic barrel is fixed; then the driving piece 725 drives the flushing pipe 71 to move upwards until the balls 713 contact the bottom of the plastic bucket, the supporting spring 723 is compressed to adapt to the plastic buckets with different heights, the water pump introduces the water in the filter chamber 2 into the water inlet 13, the water flow enters the flushing pipe 71 from the water inlet 13 and is sprayed out from the inclined groove 711, and the flushing pipe 71 is driven to rotate so as to clean the plastic bucket; when in washing, water flow falls into the cleaning pool 1 along the wall of the plastic bucket and the surface of the flexible pad 5, the water flow enters the filter pool 2 after being filtered by the filter screen 31 for reuse, and impurities fall into the collection box 32 for cleaning; after the cleaning is finished, the motor 61 drives the sliding block 63 to reset, and the pushing post 661 is separated from the plastic barrel and is reset under the driving of the reset spring 662; the push plate 666 is separated from the rotating rod 69, and the tension spring 644 drives the extrusion block 643 to reset; the first inclined plane 664 is inserted into the square groove 672, the clamping block 673 is separated from the clamping groove 641, the torsion spring 68 drives the outer clamping piece 64 to reset, and at the moment, the plastic barrel can be taken down from the barrel seat 4; after several cleanings, the handle 33 is lifted up to remove the filter elements 3, in order to clean the impurities in the collecting box 32.

Claims

1. An automatic cleaning device for plastic barrels comprises a cleaning pool (1), a filter pool (2) arranged on one side of the cleaning pool, a filtering piece (3) arranged between the cleaning pool and the filter pool, a barrel seat (4) arranged above the cleaning pool, a flexible pad (5) arranged on the barrel seat, a plurality of outer clamping components (6) symmetrically fixed on two sides of the barrel seat, and a cleaning component (7) positioned right below the barrel seat; the method is characterized in that: the barrel seat is annular and the surface of the barrel seat is inclined; a conical table (11) is arranged at the bottom of the cleaning pool, and a pedestal (12) is arranged on the conical table; a plurality of water inlets (13) are formed in the side of the pedestal; the cleaning assembly comprises a flushing pipe (71) inserted in the pedestal and a supporting part (72) positioned below the flushing pipe; the surface of the flushing pipe is provided with a plurality of inclined grooves (711) which are distributed in a circumferential manner; the top of the flushing pipe is provided with an annular groove (712); a plurality of balls (713) in the annular groove; the water inlet is communicated with the inside of the flushing pipe; the flushing pipe is connected with the filter tank through a water pump.

2. The automatic cleaning device for plastic barrel of claim 1, wherein: the bottom of the flushing pipe (71) is provided with a connecting ring (714); the supporting component (72) comprises a ring sleeve (721) sleeved outside the connecting ring, a plurality of columns (722) arranged at the bottom of the ring sleeve, a plurality of supporting springs (723) sequentially sleeved outside each column, a connecting plate (724) positioned at the bottom of each column and a driving piece (725) used for driving the connecting plate to move; the driving piece is fixed at the bottom of the cleaning pool (1); the supporting spring is positioned between the connecting plate and the ring sleeve; the connecting ring is rotatably connected with the ring sleeve.

3. The automatic cleaning device for plastic barrel of claim 1, wherein: the outer clamping assembly (6) comprises a motor (61) fixed on the barrel seat, a shaft sleeve (62) with one end connected with a motor spindle, a sliding block (63) in threaded connection with the shaft sleeve, outer clamping pieces (64) respectively connected to two sides of the sliding block in a rotating mode, a sliding groove (65) arranged in the sliding block, a locking piece (66) inserted in the sliding groove and locking pieces (67) symmetrically located on two sides of the locking piece; a torsion spring (68) is arranged between the outer clamping piece and the sliding block; a clamping groove (641) is formed in the joint of the outer clamping piece (64) and the sliding block; the locking block comprises a square block (671) capable of sliding in the sliding groove, a square groove (672) arranged on the square block and a clamping block (673) arranged at one end of the square block; the locking piece (66) comprises a push post (661) inserted in the middle of the sliding groove, a return spring (662) sleeved on the push post, extension bars (663) symmetrically arranged on two sides of the push post, a first inclined plane (664) arranged at one end of the extension bar and a second inclined plane (665) arranged at the back side of the first inclined plane; two ends of the reset spring are respectively contacted with the push column and the inner wall of the sliding chute; one of the first inclined plane and the second inclined plane is inserted into the square groove; the clamping block is embedded with the clamping groove; and two ends of the torsion spring are respectively connected with the outer clamping piece and the sliding block.

4. The automatic cleaning device for plastic barrel of claim 3, wherein: one end of the outer clamping piece (64) far away from the sliding block (63) is rotatably connected with a hollow roller (642); an extrusion block (643) is inserted in the outer clamping piece; a tension spring (644) is arranged between the extrusion block and the inner wall of the outer clamping piece; one end of the extrusion block is contacted with the hollow roller; the top of the extrusion block penetrates through the outer clamping piece; the top of the extrusion block is rotatably connected with a connecting rod (645); one end of the connecting rod is rotatably connected with a cylinder (646); the bottom of the cylinder is provided with a returning groove (647); a push plate (666) is arranged at the top of the push column (661); the sliding block (63) is rotatably connected with two rotating rods (69); the two rotating rods are symmetrically positioned at two sides of the push plate; the top of the sliding block is provided with a short column (60); the short column is positioned in the return groove; the joint of the sliding block and the outer clamping piece is coaxial with the short column; the cylinder is arranged coaxially with the short column; one end of the rotating rod is contacted with the cylinder.

5. The automatic cleaning device for plastic barrel of claim 1, wherein: the filter element (3) comprises a filter screen (31) positioned between the cleaning tank (1) and the filter tank (2), a collecting box (32) arranged at the bottom of the filter screen, and handles (33) arranged at two sides of the top of the filter screen; the collecting box is positioned in the cleaning pool.