CN110422469B

CN110422469B - PE plastic bucket

Info

Publication number: CN110422469B
Application number: CN201910731923.7A
Authority: CN
Inventors: 不公告发明人
Original assignee: Anhui Xinao Food Packaging Technology Co ltd
Current assignee: Anhui Xinao Food Packaging Technology Co.,Ltd.
Priority date: 2019-08-09
Filing date: 2019-08-09
Publication date: 2021-01-05
Anticipated expiration: 2039-08-09
Also published as: CN110422469A

Abstract

The invention belongs to the technical field of plastic barrels, and particularly relates to a PE plastic barrel; comprises a plastic barrel body and an upper sealing cover; a heat preservation cavity is formed in the outer wall of the plastic barrel body, air suction bags are uniformly arranged in the heat preservation cavity, a swing groove is formed in the inner side wall of the heat preservation cavity, and a swing rod is arranged in the swing groove; one end of the swinging rod is connected to the bottom end of the air suction bag, and a cavity buoy is fixed at the other end of the swinging rod; the cavity buoy is positioned in the plastic barrel; a gas collecting cavity is formed in the upper sealing cover, and a liquid-repellent gas-conducting film is arranged on the bottom end wall of the gas collecting cavity; the bottom end wall of the gas collection cavity is provided with a socket which is in socket fit with the top end of the gas suction bag; an air suction hole is formed in the side wall of the top end of the air suction bag, and a sealing column is inserted in the air suction hole in a sliding mode; the phenomenon that the volatile gas generated by the waste solution in the plastic barrel under long-time fluctuation is gathered on the inner wall of the upper sealing cover to cause leakage and pollution of the waste gas is prevented.

Description

PE plastic bucket

Technical Field

The invention belongs to the technical field of plastic barrels, and particularly relates to a PE plastic barrel.

Background

The plastic barrel is mainly used for storing and transporting various liquids, has good characteristics for special dangerous goods packaging, has the characteristics of low probability of breakage, no rustiness, light weight and the like, has good oil resistance and strong corrosion resistance, and is mainly used for packaging dangerous goods needing heat preservation, moisture protection, pressure resistance and corrosion resistance; the plastic barrel is made of polyethylene, polypropylene, polyester and other plastics and is mainly used for containing liquid and solid articles in the industries of chemical industry, pesticide, medicine, food, hardware electronics, electromechanics and the like.

And current plastic drum is when using, especially deposit when having the volatile waste solution of corruption, because this waste solution is having certain volatility, and then this waste solution when transporting under high temperature environment, lead to the inside waste solution of plastic drum to produce certain undulant easily, and then increase this waste solution's volatile effect, the gas that this solution volatilizees the production simultaneously can gather in plastic drum lid department, when the plastic drum lid is opening, easy inside waste gas produces reveals, and then causes the pollution phenomenon of environment.

Disclosure of Invention

In order to make up for the defects of the prior art, the PE plastic barrel is mainly used for solving the problem that when the existing plastic barrel is used, particularly when corrosive and volatile waste solution is stored, gas generated by volatilization of the solution can be gathered at a plastic barrel cover due to certain volatility of the waste solution, and when the plastic barrel cover is opened, the waste gas inside the plastic barrel is easy to leak, so that the environment pollution phenomenon is caused.

The technical scheme adopted by the invention for solving the technical problems is as follows: the PE plastic barrel comprises a plastic barrel body and an upper sealing cover; a plurality of fixing seats are uniformly arranged on the outer wall of the plastic barrel body, and locking rods are hinged to the plurality of fixing seats through hinge columns; a plurality of clamping seats are uniformly arranged on the outer wall of the upper sealing cover, and locking rods are fixed in the clamping seats through locking rings; a heat preservation cavity is formed in the outer wall of the plastic barrel body, air suction bags are uniformly arranged in the heat preservation cavity, a swing groove is formed in the inner side wall of the heat preservation cavity, and a swing rod is arranged in the swing groove; one end of the swinging rod is connected to the bottom end of the air suction bag, and a cavity buoy is fixed to the other end of the swinging rod; the cavity buoy is positioned in the plastic barrel body; a gas collecting cavity is formed in the upper sealing cover, and a liquid-repellent gas-conducting film is arranged on the bottom end wall of the gas collecting cavity; the bottom end wall of the gas collection cavity is provided with a socket, and the socket is in socket fit with the top end of the gas suction bag; an air suction hole is formed in the side wall of the top end of the air suction bag, a sealing column is inserted in the air suction hole in a sliding mode, and the bottom end of the sealing column is arranged on the inner wall of the bottom end of the air suction bag; the side wall of the air suction bag is connected with a collecting bag through an air duct, the collecting bag is positioned on the inner side wall of the heat preservation cavity, and a one-way valve is arranged at the joint of the air duct and the air suction bag; when the sealing device works, corrosive and volatile waste solution is stored in the plastic barrel, the liquid level of the waste solution is in floating contact with the cavity, the upper sealing cover is arranged on the plastic barrel, and the upper sealing cover can be fixed on the barrel through the matching of the locking rod and the locking ring; because the waste solution is volatile, a space needs to be reserved in the plastic barrel during storage; when the plastic barrel body containing waste liquid is transported, due to the fact that the transportation speed and the transportation road are not flat, particularly during high-temperature weather transportation, the volatile waste liquid contained in the plastic barrel body fluctuates, the fluctuating waste liquid enables the cavity buoy to swing in the plastic barrel body, the swinging cavity buoy drives the swinging rod to swing up and down in the heat preservation cavity, the swinging up and down of the swinging rod enables the air suction bag to generate extrusion shrinkage or stretching expansion, and when the air suction bag is extruded and shrunk, the sealing column is driven to slide and expand in the air suction hole, and the air suction hole is blocked; meanwhile, the gas in the air suction bag is discharged into the collection bag through the one-way valve to be collected; when the air suction bag is stretched and expanded, the sealing column is driven by the stretching of the air suction bag to contract in the air suction hole, and meanwhile, the stretched and expanded air suction bag can pump the volatilized gas in the air collection cavity into the air suction bag through the air guide hole; along with the continuous fluctuation of waste solution, can drive the cavity and float continuous luffing motion in the plastic drum body, make the continuous gas with the gas collection intracavity of gasbag of breathing in take away, discharge into the collection bag that sets up in the gas collection intracavity through the check valve simultaneously, and then collect the bag and can collect the volatile gas of waste solution, prevent that the volatile gas gathering that waste solution produced under long-time fluctuation in the plastic drum body is on the inner wall of last sealed lid, the gas that leads to volatilizing the production when last sealed lid is opening takes place to reveal, and then lead to the waste gas to take place to reveal the phenomenon of pollution.

Preferably, the top end part of the sealing column is connected with a cavity U-shaped ring in a sliding manner through the extrusion bag, and the cavity U-shaped ring is communicated with the inside of the extrusion bag; the outer wall of the cavity U-shaped ring is provided with a corrugated sealing layer, and the corrugated sealing layer is sealed in the air suction hole in a sliding manner; when the sealing device works, when the sealing column slides upwards, the extrusion bag arranged at the top end of the sealing column can be extruded, meanwhile, the extrusion bag can extrude the cavity U-shaped ring, so that the top end of the cavity U-shaped ring is extruded and deformed, the top end of the cavity U-shaped ring enters the two sides of the cavity U-shaped ring under the action of extrusion force, so that the corrugated sealing layers arranged at the two sides of the cavity U-shaped ring expand in the air suction hole, and the air suction hole can be blocked by the expansion of the corrugated sealing layers; meanwhile, the air in the extrusion bag enters the cavity U-shaped ring, so that the sealing effect on two sides of the cavity U-shaped ring is further improved; when the sealing column slides downwards, the sealing column can enable the extrusion bag to stretch, meanwhile, the extrusion bag drives the inner side wall of the top end of the cavity U-shaped ring to stretch and deform, gas on two sides of the cavity U-shaped ring is sucked into the top end of the cavity U-shaped ring, the corrugated sealing layer shrinks, then gas in the gas collection cavity enters the gas suction bag through the gas suction hole under the suction force of the gas suction bag, and the gas suction bag can recover and volatilize the generated gas in the gas collection cavity to perform air suction operation.

Preferably, a plurality of limiting extrusion blocks are arranged in the air suction hole, and the limiting extrusion blocks are clamped in wave troughs of the corrugated sealing layer; when the sealing device works, when the sealing column slides upwards, the arranged extrusion blocks can prevent the phenomenon that the corrugated sealing layer slides out of the air suction hole due to the sliding thrust of the sealing column, so that the sealing effect of the cavity U-shaped ring is influenced; meanwhile, the plurality of limiting extrusion blocks can prevent the phenomenon that the U-shaped ring of the cavity is pushed out of the air suction hole by air in the air suction bag when the air suction bag is extruded.

Preferably, the top end of the air suction bag is in clearance fit with the interface; elastic metal corrugated strips are arranged on the outer wall of the air suction bag, and the top ends of the elastic metal corrugated strips are arranged on the outer wall of the air suction bag in a sliding manner; the during operation, when last sealed lid is installed on the plastics staving, the gasbag of breathing in of setting can insert in the interface, simultaneously, go up the elastic metal ripple strip that sets up on the extrusion force extrusion gasbag of sealed lid, make elastic metal ripple strip produce the turn-up phenomenon under the extrusion force of interface, and then go up the extrusion force of sealed lid with elastic ripple strip turn-up block to the plastics staving, the turn-up of elastic metal ripple strip not only can play fixed effect to the gasbag of breathing in, can play limiting displacement to the gasbag simultaneously, increase the exhaust effect of gasbag when extrusion shrink, prevent that the gliding phenomenon from appearing when the gasbag of breathing in is tensile.

Preferably, a sealing bag is arranged in the swing groove and is wrapped on the outer wall of the swing rod; a plurality of limiting cavity capsules are arranged between the swinging rod and the sealing capsules, and elastic sealing glue is filled between the limiting cavity capsules; when the plastic barrel works, the arranged sealing bag can play a role in sealing the oscillating rod, so that the phenomenon that waste solution in the plastic barrel enters the heat preservation cavity through the oscillating groove when the oscillating rod oscillates is prevented; and a plurality of spacing bags that set up can play spacing operation to the swinging arms, prevent that waste liquid from fluctuating at high amplitude, resulting in the swing range of swinging arms too big, and then influence the sealed effect of sealed post and cavity U type circle.

Preferably, an air guide cavity is formed in the swing rod, one end of the air guide cavity is communicated with the cavity float, and the other end of the air guide cavity is communicated with the limiting cavity bag; inert gas is filled in the limit cavity bag; during operation, when the swing arm luffing motion extrusion spacing cavity bag, inert gas in the spacing cavity bag can enter into the cavity cursory through the swing arm in, the buoyancy that rises of the inert gas that enters into the cavity cursory can make the cursory suspension effect of increase cavity, prevents that the fluctuation range undersize of abandonment liquid from resulting in the cavity cursory not appearing the swing phenomenon, and then influences the phenomenon that the suction bag fails to absorb waste gas in the gas collection chamber.

The invention has the following beneficial effects:

1. according to the invention, due to the matching of the barrel cover cavity float and the air suction bag, when the cavity float continuously swings up and down in the plastic barrel, the air suction bag continuously pumps the gas in the gas collection cavity, and simultaneously the gas is discharged into the collection bag arranged in the gas collection cavity through the one-way valve, so that the collection bag can collect the volatilized gas of the waste solution, and the phenomenon that the volatile gas generated by the waste solution in the plastic barrel under long-time fluctuation is accumulated on the inner wall of the upper sealing cover, and the gas generated by volatilization leaks when the upper sealing cover is opened, so that the phenomenon of leakage and pollution of the waste gas is caused is prevented.

2. According to the invention, through the matching of the sealing column and the cavity U-shaped ring, when the sealing column slides upwards, the corrugated sealing layers arranged on the two sides of the cavity U-shaped ring expand in the air suction hole, and the air suction hole is blocked by the expansion of the corrugated sealing layers; meanwhile, the air in the extrusion bag enters the cavity U-shaped ring, so that the sealing effect on two sides of the cavity U-shaped ring is further improved; when the sealing column slides downwards, the gas on two sides of the cavity U-shaped ring is sucked into the top end of the cavity U-shaped ring, the corrugated sealing layer contracts, the gas in the gas collection cavity enters the gas suction bag through the gas suction hole under the suction force of the gas suction bag, and the gas suction bag can perform gas extraction operation on the gas generated by recovery and volatilization in the gas collection cavity.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 in accordance with the present invention;

FIG. 4 is a schematic view of the invention taken from the direction B of FIG. 2;

in the figure: the device comprises a plastic barrel body 1, a heat preservation cavity 11, a swing groove 12, an upper sealing cover 2, a gas collection cavity 21, a liquid and gas dredging film 22, a plug port 23, a gas suction bag 3, a gas suction hole 31, a limiting extrusion block 32, a swing rod 4, a gas guide cavity 41, a cavity buoy 5, a sealing column 6, a cavity U-shaped ring 61, a corrugated sealing layer 62, an elastic metal corrugated strip 7, a sealing bag 8, a limiting cavity bag 9, a fixed seat 101, a locking rod 102, a clamping seat 103, a locking ring 104 and a collection bag 105.

Detailed Description

A PE plastic bucket according to an embodiment of the present invention will be described below with reference to fig. 1 to 4.

As shown in fig. 1 to 4, the PE plastic bucket of the present invention includes a plastic bucket body 1 and an upper sealing cover 2; a plurality of fixing seats 101 are uniformly arranged on the outer wall of the plastic barrel body 1, and locking rods 102 are hinged to the plurality of fixing seats 101 through hinge columns; a plurality of clamping seats 103 are uniformly arranged on the outer wall of the upper sealing cover 2, and locking rods 102 are fixed in the clamping seats 103 through locking rings 104; a heat preservation cavity 11 is formed in the outer wall of the plastic barrel body 1, air suction bags 3 are uniformly arranged in the upper portion of the heat preservation cavity 11, a swing groove 12 is formed in the inner side wall of the heat preservation cavity 11, and a swing rod 4 is arranged in the swing groove 12; one end of the swinging rod 4 is connected to the bottom end of the air suction bag 3, and a cavity float 5 is fixed at the other end of the swinging rod 4; the cavity float 5 is positioned in the plastic barrel body 1; a gas collecting cavity 21 is formed in the upper sealing cover 2, and a liquid-repellent gas-conducting film 22 is arranged on the bottom end wall of the gas collecting cavity 21; a socket 23 is formed on the bottom end wall of the gas collection cavity 21, and the socket 23 is in socket fit with the top end of the gas suction bag 3; the side wall of the top end of the air suction bag 3 is provided with an air suction hole 31, a sealing column 6 is inserted in the air suction hole 31 in a sliding manner, and the bottom end of the sealing column 6 is arranged on the inner wall of the bottom end of the air suction bag 3; the side wall of the air suction bag 3 is connected with a collecting bag 105 through an air duct, the collecting bag 105 is positioned on the inner side wall of the heat preservation cavity 11, and a one-way valve is arranged at the joint of the air duct and the air suction bag 3; when the sealing device works, corrosive and volatile waste solution is stored in the plastic barrel body 1, the liquid level of the waste solution is in contact with the cavity float 5, the upper sealing cover 2 is arranged on the plastic barrel body 1, and the upper sealing cover 2 can be fixed on the barrel body through the matching of the locking rod 102 and the locking ring 104; because the waste solution is volatile, a space needs to be reserved in the plastic barrel body 1 during storage; when the plastic barrel body 1 containing waste liquid is transported, due to the fact that the transportation speed and the transportation road are not flat, particularly during transportation in high-temperature weather, volatile waste liquid contained in the plastic barrel body 1 fluctuates, the fluctuating waste liquid enables the cavity buoy 5 to swing in the plastic barrel body 1, the swinging cavity buoy 5 drives the swinging rod 4 to swing up and down in the heat preservation cavity 11, the up-and-down swinging of the swinging rod 4 enables the air suction bag 3 to generate an extrusion shrinkage or stretching expansion phenomenon, and when the air suction bag 3 is extruded and shrunk, the sealing column 6 is driven to slide and expand in the air suction hole 31, so that the air suction hole 31 is blocked; meanwhile, the gas in the air suction bag 3 is discharged into the collection bag 105 through the one-way valve for collection; when the air suction bag 3 is stretched and expanded, the sealed column 6 is driven by the stretching of the air suction bag 3 to shrink in the air suction hole 31, and meanwhile, the air suction bag 3 stretched and expanded can suck the volatilized gas in the gas collection cavity 21 into the air suction bag 3 through the gas guide hole; along with the continuous fluctuation of waste solution, can drive the continuous luffing motion of cavity cursory 5 in plastic barrel 1, make the gasbag of breathing in 3 continuously take away the gas in the gas collecting cavity 21, discharge into the collection bag 105 that sets up in the gas collecting cavity 21 through the check valve simultaneously, and then collect the gas that the bag 105 can be volatile with waste solution and collect, prevent that the volatile gas gathering that waste solution produced under long-time fluctuation in plastic barrel 1 from on the inner wall of last sealed lid 2, the gas that leads to volatilizing when last sealed lid 2 opens and produce takes place to reveal, and then lead to waste gas to take place to reveal the phenomenon of pollution.

As shown in fig. 2 and 3, a cavity U-shaped ring 61 is connected to the top end part of the sealing column 6 in a sliding way through the extrusion bag, and the cavity U-shaped ring 61 is communicated with the inside of the extrusion bag; the corrugated sealing layer 62 is arranged on the outer wall of the cavity U-shaped ring 61, and the corrugated sealing layer 62 is sealed in the air suction hole 31 in a sliding manner; during operation, when the sealing column 6 slides upwards, the pressing bag arranged at the top end of the sealing column 6 can be pressed, meanwhile, the pressing bag can press the cavity U-shaped ring 61, so that the top end of the cavity U-shaped ring 61 is extruded and deformed, the top end of the cavity U-shaped ring 61 enters two sides of the cavity U-shaped ring 61 under the action of the pressing force, the corrugated sealing layers 62 arranged at two sides of the cavity U-shaped ring 61 are expanded in the air suction hole 31, and the air suction hole 31 can be blocked by the expansion of the corrugated sealing layers 62; meanwhile, the air in the extrusion bag enters the cavity U-shaped ring 61, so that the sealing effect on two sides of the cavity U-shaped ring 61 is further improved; when the sealing post 6 slides downwards, the sealing post 6 can stretch the extrusion bag, meanwhile, the extrusion bag drives the inner side wall of the top end of the cavity U-shaped ring 61 to stretch and deform, gas on two sides of the cavity U-shaped ring 61 is sucked into the top end of the cavity U-shaped ring 61, the corrugated sealing layer 62 is contracted, further, the gas in the gas collection cavity 21 enters the gas suction bag 3 through the gas suction hole 31 under the suction force of the gas suction bag 3, and the gas suction bag 3 can recover and volatilize the generated gas in the gas collection cavity 21 to perform gas extraction operation.

As shown in fig. 2 and 3, a plurality of limiting extrusion blocks 32 are arranged in the air suction hole 31, and the limiting extrusion blocks 32 are clamped in the wave troughs of the corrugated sealing layer 62; when the sealing device works, when the sealing column 6 slides upwards, the arranged plurality of squeezing blocks can prevent the phenomenon that the corrugated sealing layer 62 slides out of the air suction hole 31 by the sliding thrust of the sealing column 6, so that the sealing effect of the cavity U-shaped ring 61 is influenced; the plurality of limiting extrusion blocks 32 can prevent the phenomenon that the air in the air suction bag 3 pushes the cavity U-shaped ring 61 out of the air suction hole 31 when the air suction bag 3 is extruded.

As shown in fig. 2 and 3, the top end of the air suction bag 3 is in clearance fit with the interface 23; the outer wall of the air suction bag 3 is provided with an elastic metal corrugated strip 7, and the top end of the elastic metal corrugated strip 7 is arranged on the outer wall of the air suction bag 3 in a sliding manner; the during operation, when last sealed lid 2 is installed on plastics staving 1, the gasbag 3 of breathing in of setting can insert in interface 23, the elastic metal ripple strip 7 that sets up on the extrusion pressure extrusion gasbag 3 of last sealed lid 2 simultaneously, make elastic metal ripple strip 7 produce the turn-up phenomenon under the extrusion pressure of interface 23, and then the extrusion pressure of last sealed lid 2 with elastic ripple strip turn-up block to plastics staving 1 on, the turn-up of elastic metal ripple strip 7 not only can play fixed effect to gasbag 3, can play limiting displacement to gasbag 3 simultaneously, increase the exhaust effect of gasbag 3 when the extrusion shrink, prevent that gliding phenomenon from appearing in gasbag 3 when tensile.

As shown in fig. 2 and 4, a sealing bag 8 is arranged in the swing groove 12, and the sealing bag 8 is wrapped on the outer wall of the swing rod 4; a plurality of limiting cavity capsules 9 are arranged between the swinging rod 4 and the sealing capsule 8, and elastic sealing glue is filled between the limiting cavity capsules 9; when the device works, the arranged sealing bag 8 can play a role in sealing the oscillating rod 4, so that the phenomenon that waste solution in the plastic barrel body 1 enters the heat preservation cavity 11 through the oscillating groove 12 when the oscillating rod 4 oscillates is prevented; and the plurality of limiting bags can limit the swing rod 4, so that the swing amplitude of the swing rod 4 is prevented from being too large due to high-amplitude fluctuation of waste liquid, and the sealing effect of the sealing column 6 and the cavity U-shaped ring 61 is further influenced.

As shown in fig. 2 and 4, an air guide cavity 41 is formed inside the swing rod 4, one end of the air guide cavity 41 is communicated with the cavity buoy 5, and the other end of the air guide cavity 41 is communicated with the limit cavity pocket 9; inert gas is filled in the limit cavity bag 9; during operation, when the spacing cavity bag 9 of 4 luffing motions extrusion of swinging arms, inert gas in the spacing cavity bag 9 can enter into the cavity cursory 5 through swinging arms 4 in, the buoyancy that rises of the inert gas that enters into the cavity cursory 5 can make the suspension effect that increases cavity cursory 5, prevents the fluctuation range undersize of abandonment liquid, and leads to the cavity cursory 5 not appear the swing phenomenon, and then influences the phenomenon that the gasbag 3 of breathing in can not absorb waste gas in the air-collecting cavity 21.

The specific working process is as follows:

when the sealing device works, corrosive and volatile waste solution is stored in the plastic barrel body 1, the liquid level of the waste solution is in contact with the cavity float 5, the upper sealing cover 2 is arranged on the plastic barrel body 1, and the upper sealing cover 2 can be fixed on the barrel body through the matching of the locking rod 102 and the locking ring 104; because the waste solution is volatile, a space needs to be reserved in the plastic barrel body 1 during storage; when the plastic barrel body 1 containing waste liquid is transported, due to the fact that the transportation speed and the transportation road are not flat, particularly during transportation in high-temperature weather, volatile waste liquid contained in the plastic barrel body 1 fluctuates, the fluctuating waste liquid enables the cavity buoy 5 to swing in the plastic barrel body 1, the swinging cavity buoy 5 drives the swinging rod 4 to swing up and down in the heat preservation cavity 11, the up-and-down swinging of the swinging rod 4 enables the air suction bag 3 to generate an extrusion shrinkage or stretching expansion phenomenon, and when the air suction bag 3 is extruded and shrunk, the sealing column 6 is driven to slide and expand in the air suction hole 31, so that the air suction hole 31 is blocked; meanwhile, the gas in the suction bag 3 is discharged into the collection bag 105 through the check valve to be collected.

In the description of the present invention, it is to be understood that the terms "center", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be taken as limiting the scope of the present invention.

While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from its scope. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims

1. A PE plastic bucket is characterized in that: comprises a plastic barrel body (1) and an upper sealing cover (2); a plurality of fixing seats (101) are uniformly arranged on the outer wall of the plastic barrel body (1), and locking rods (102) are hinged to the plurality of fixing seats (101) through hinge columns; a plurality of clamping seats (103) are uniformly arranged on the outer wall of the upper sealing cover (2), and locking rods (102) are fixed in the clamping seats (103) through locking rings (104); a heat preservation cavity (11) is formed in the outer wall of the plastic barrel body (1), air suction bags (3) are uniformly arranged in the heat preservation cavity (11), a swing groove (12) is formed in the inner side wall of the heat preservation cavity (11), and a swing rod (4) is arranged in the swing groove (12); one end of the swinging rod (4) is connected to the bottom end of the air suction bag (3), and a cavity float (5) is fixed at the other end of the swinging rod (4); the cavity buoy (5) is positioned in the plastic barrel body (1); a gas collecting cavity (21) is formed in the upper sealing cover (2), and a liquid-repellent gas-guiding film (22) is arranged on the bottom end wall of the gas collecting cavity (21); the bottom end wall of the gas collection cavity (21) is provided with a socket (23), and the socket (23) is in socket fit with the top end of the gas suction bag (3); an air suction hole (31) is formed in the side wall of the top end of the air suction bag (3), a sealing column (6) is inserted in the air suction hole (31) in a sliding mode, and the bottom end of the sealing column (6) is arranged on the inner wall of the bottom end of the air suction bag (3); the lateral wall of gasbag (3) of breathing in is connected with through the air duct and collects bag (105), collect bag (105) and be located the inside wall in heat preservation chamber (11), and the air duct is provided with the check valve with the junction of breathing in bag (3).

2. The PE plastic bucket according to claim 1, wherein: the top end part of the sealing column (6) is connected with a cavity U-shaped ring (61) in a sliding way through the extrusion bag, and the cavity U-shaped ring (61) is communicated with the interior of the extrusion bag; the outer wall of the cavity U-shaped ring (61) is provided with a corrugated sealing layer (62), and the corrugated sealing layer (62) is sealed in the air suction hole (31) in a sliding mode.

3. The PE plastic bucket according to claim 2, wherein: a plurality of limiting extrusion blocks (32) are arranged in the air suction hole (31), and the limiting extrusion blocks (32) are clamped in wave troughs of the corrugated sealing layer (62).

4. The PE plastic bucket according to claim 1, wherein: the top end of the air suction bag (3) is in clearance fit with the insertion port (23); the outer wall of the air suction bag (3) is provided with an elastic metal corrugated strip (7), and the top end of the elastic metal corrugated strip (7) is arranged on the outer wall of the air suction bag (3) in a sliding mode.

5. The PE plastic bucket according to claim 1, wherein: a sealing bag (8) is arranged in the swing groove (12), and the sealing bag (8) is wrapped on the outer wall of the swing rod (4); a plurality of limiting cavity capsules (9) are arranged between the swinging rod (4) and the sealing capsule (8), and elastic sealing glue is filled between the limiting cavity capsules (9).

6. The PE plastic bucket according to claim 5, wherein: an air guide cavity (41) is formed in the swing rod (4), one end of the air guide cavity (41) is communicated with the cavity buoy (5), and the other end of the air guide cavity (41) is communicated with the limiting cavity bag (9); and inert gas is filled in the limit cavity bag (9).