CN215693780U

CN215693780U - Autoclave convenient to feed and used for chemical industry

Info

Publication number: CN215693780U
Application number: CN202121238715.2U
Authority: CN
Inventors: 梁守安
Original assignee: Dalian Renchang Petrochemical Equipment Co ltd
Current assignee: Dalian Renchang Petrochemical Equipment Co ltd
Priority date: 2021-06-03
Filing date: 2021-06-03
Publication date: 2022-02-01
Anticipated expiration: 2031-06-03

Abstract

The utility model relates to the technical field of mechanical equipment, in particular to a chemical autoclave convenient for feeding, which enables materials in a plurality of groups of material boxes to be added in batches by respectively controlling the opening of different one-way air inlets, improves the convenience for adding different materials in a high-pressure state in a cavity, improves the adding efficiency of the materials, improves the pressure stability in a tank body by arranging a constant pressure device, improves the processing quality of the materials and improves the practicability of the device; including the support, the multiunit material case, the barrel, first piston plate, the mount, first sliding sleeve, the push rod, a motor, the connecting rod, arrange the material pipe, one-way discharge valve, the multiunit conveying pipeline, the one-way admission valve of multiunit, jar body and constant voltage device, the multiunit material case is installed respectively on the inside wall of support, be provided with feed inlet and air inlet respectively in the multiunit material incasement, feed inlet and air inlet communicate with each other with the multiunit material incasement respectively, the barrel bottom is connected with the top of support, and the left end of barrel is provided with the opening.

Description

Autoclave convenient to feed and used for chemical industry

Technical Field

The utility model relates to the technical field of mechanical equipment, in particular to a chemical high-pressure kettle convenient for feeding.

Background

The chemical autoclave convenient for feeding is an auxiliary device for feeding the chemical autoclave, and is widely used in the field of mechanical equipment; the existing autoclave for chemical industry convenient for feeding is discovered in use, the autoclave is a reactor operated under high pressure, the autoclave is widely applied to the fields of petroleum, chemical industry, rubber, pesticides, dyes, medicines, foods and the like, when an autoclave for processing chemical products is used at present, the autoclave is not convenient for adding chemical raw materials under a high-pressure working state, the use convenience of the device is reduced, the adding process of the raw materials can influence the pressure value in the autoclave, the processing quality of the chemical raw materials is reduced, and the practicability of the device is reduced.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the utility model provides the chemical autoclave with convenient feeding, which is characterized in that different one-way air inlet valves are respectively controlled to be opened, so that materials in a plurality of groups of material boxes are added in batches, the convenience for adding different materials in a cavity under a high-pressure state is improved, the adding efficiency of the materials is improved, the pressure stability in the tank body is improved by arranging a constant pressure device, the processing quality of the materials is improved, and the practicability of the device is improved.

The utility model relates to a chemical autoclave convenient for feeding, which comprises a bracket, a plurality of groups of material boxes, a cylinder body, a first piston plate, a fixing frame, a first sliding sleeve, a push rod, a first motor, a connecting rod, a discharge pipe, a one-way exhaust valve, a plurality of groups of material conveying pipes, a plurality of groups of one-way intake valves, a cylinder body and a constant pressure device, wherein the plurality of groups of material boxes are respectively arranged on the inner side wall of the bracket, a feed port and an air inlet are respectively arranged in the plurality of groups of material boxes, the feed port and the air inlet are respectively communicated with the plurality of groups of material boxes, the bottom end of the cylinder body is connected with the top end of the bracket, the left end of the cylinder body is provided with an opening which is communicated with the inside of the cylinder body, the plurality of groups of feed ports and the discharge ports are respectively communicated with the inside of the cylinder body, the first piston plate can be arranged in the cylinder body in a left-right sliding manner, the fixing frame is arranged on the inner side wall of the cylinder body, the first sliding sleeve is fixedly arranged on the inner side wall of the fixing frame, the push rod can be arranged inside the first sliding sleeve in a left-right sliding mode, the right end of the push rod is fixedly connected with the left end of the first piston plate, the bottom end of the first motor is connected with the top end of the support, a flywheel is arranged on the output end of the first motor, the right end of the connecting rod is rotatably connected with the left end of the push rod, the left end of the connecting rod is rotatably connected with the outer side wall of the flywheel, the left end of the connecting rod is arranged at the eccentric position of the flywheel, the input end of the discharge pipe is communicated with the discharge opening of the feed pipe, the one-way exhaust valve is communicated with the discharge pipe, the input ends of the multiple groups of feed pipes are respectively communicated with the multiple groups of feed openings of the cylinder body, the multiple groups of one-way intake valves are respectively communicated with the multiple groups of feed openings of the cylinder body, a cavity is arranged in the cylinder body, the feed openings and the discharge openings are arranged in the cavity body, and are communicated with the cavity, and the output end of the discharge pipe is communicated with the feed inlet of the cavity, and the constant pressure device is arranged on the outer side wall of the tank body and is communicated with the cavity.

The utility model relates to a chemical autoclave convenient for feeding, which comprises an exhaust hood, exhaust pipes, a limiting plate, a second piston plate, a spring, a second sliding sleeve and a pull ring, wherein the bottom end of the exhaust hood is connected with the top end of a tank body and communicated with the inside of a chamber, a plurality of groups of exhaust pipes are respectively arranged in the middle of the outer side wall of the exhaust hood and communicated with the inside of the exhaust hood, the limiting plate is fixedly arranged on the inner side wall of the exhaust hood, the second piston plate can be arranged in the exhaust hood in an up-and-down sliding manner, the position of the second piston plate is arranged below the position of the exhaust pipes, the bottom end of the spring is tightly attached to the top end of the second piston plate, the top end of the spring is tightly attached to the top of the inner side wall of the exhaust hood, the bottom end of the pull ring is connected with the top end of the exhaust hood, the pull ring can be arranged in the second sliding sleeve in an up-and-down sliding manner, and the bottom end of the pull ring extends into the exhaust hood and is connected with the top end of the second piston plate.

The chemical high-pressure kettle convenient for feeding also comprises a second motor and stirring blades, wherein the second motor is arranged at the top end of the tank body, a rotatable rotating shaft is longitudinally arranged at the output end of the bottom end of the second motor, and a plurality of groups of stirring blades are fixedly arranged on the outer side wall of the rotating shaft and are arranged in the cavity.

The chemical autoclave with convenient feeding disclosed by the utility model further comprises a plurality of groups of ventilation pipes and a plurality of groups of dust screens, wherein the plurality of groups of ventilation pipes are respectively communicated with and arranged on exhaust ports of the plurality of groups of material boxes, and the plurality of groups of dust screens are respectively communicated with and arranged at air inlets of the plurality of groups of ventilation pipes.

The chemical autoclave convenient for feeding also comprises a plurality of groups of flowmeters which are respectively communicated and arranged on a plurality of groups of material conveying pipes.

The chemical high-pressure kettle convenient for feeding also comprises an emergency exhaust valve, wherein the emergency exhaust valve is arranged on the outer side wall of the tank body and is communicated with the cavity.

The chemical high-pressure kettle convenient for feeding also comprises a pressure gauge, wherein the pressure gauge is arranged on the outer side wall of the tank body and communicated with the chamber.

Compared with the prior art, the utility model has the beneficial effects that: firstly, one set of one-way air inlet valves are opened to enable one set of material tanks to be communicated with the inside of a cylinder body, a first motor is opened to drive a flywheel to rotate, the flywheel rotates and then drives a first piston plate to slide left and right in the cylinder body through a connecting rod and a push rod, the first piston plate vacuumizes the inside of the cylinder body when sliding left, so that materials in one set of material tanks enter the inside of the cylinder body through the conveying pipes in one set, the one-way air inlet valves are closed after the materials are extracted, the first piston plate slides right to extrude the inside of the cylinder body, the materials in the cylinder body are conveyed to the inside of a cavity through a discharge pipe after being opened through a one-way exhaust valve, the materials in the plurality of sets of material tanks are added in batches by respectively controlling the opening of the different one-way air inlet valves, the convenience of adding different materials in the cavity under a high-pressure state is improved, and the adding efficiency of the materials is improved, through setting up constant voltage equipment, improve the pressure stability of jar internal portion, improve the processingquality of material, improve the practicality of device.

Drawings

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

FIG. 2 is an enlarged schematic view of the connection of the flywheel to a connecting rod or the like;

FIG. 3 is an enlarged schematic view of the connection of the second piston plate to the drawbar and the like;

FIG. 4 is an enlarged schematic view of the connection of the ventilation pipe with a dust screen or the like;

FIG. 5 is an enlarged schematic view of the connection between the shaft and the stirring blade;

in the drawings, the reference numbers: 1. a support; 2. a material box; 3. a barrel; 4. a first piston plate; 5. a fixed mount; 6. a first sliding sleeve; 7. a push rod; 8. a first motor; 9. a flywheel; 10. a connecting rod; 11. a discharge pipe; 12. a one-way discharge valve; 13. a delivery pipe; 14. a one-way feed valve; 15. a tank body; 16. an exhaust hood; 17. an exhaust pipe; 18. a limiting plate; 19. a second piston plate; 20. a spring; 21. a second sliding sleeve; 22. a pull rod; 23. a second motor; 24. a rotating shaft; 25. stirring blades; 26. a vent pipe; 27. a dust screen; 28. a flow meter; 29. an emergency exhaust valve; 30. and a pressure gauge.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

As shown in figures 1 to 5, the chemical autoclave with convenient material feeding comprises a bracket 1, a plurality of groups of material boxes 2, a cylinder 3, a first piston plate 4, a fixed frame 5, a first sliding sleeve 6, a push rod 7, a first motor 8, a connecting rod 10, a discharging pipe 11, a one-way exhaust valve 12, a plurality of groups of material conveying pipes 13, a plurality of groups of one-way air inlet valves 14, a tank body 15 and a constant pressure device, wherein the plurality of groups of material boxes 2 are respectively arranged on the inner side wall of the bracket 1, a plurality of groups of material boxes 2 are respectively provided with a material inlet and a material outlet, the material inlet and the material outlet are respectively communicated with the plurality of groups of material boxes 2, the bottom end of the cylinder 3 is connected with the top end of the bracket 1, the left end of the cylinder 3 is provided with an opening which is communicated with the inside of the cylinder 3, the right end of the cylinder 3 is respectively provided with a plurality of material inlets and material outlets, the plurality of material inlets and material outlets are communicated with the inside of the cylinder 3, the first piston plate 4 can be arranged inside the cylinder 3 in a left-right sliding manner, the fixed frame 5 is arranged on the inner side wall of the barrel 3, the first sliding sleeve 6 is fixedly arranged on the inner side wall of the fixed frame 5, the push rod 7 can slide left and right inside the first sliding sleeve 6, the right end of the push rod 7 is fixedly connected with the left end of the first piston plate 4, the bottom end of the first motor 8 is connected with the top end of the bracket 1, the output end of the first motor 8 is provided with a flywheel 9, the right end of the connecting rod 10 is rotatably connected with the left end of the push rod 7, the left end of the connecting rod 10 is rotatably connected with the outer side wall of the flywheel 9, the left end of the connecting rod 10 is arranged at the eccentric position of the flywheel 9, the input end of the discharge pipe 11 is communicated with the discharge port of the feed pipe 13, the one-way exhaust valve 12 is communicated with the discharge pipe 11, the input ends of a plurality of feed pipes 13 are respectively communicated with the interiors of a plurality of material tanks 2, the output ends of a plurality of feed pipes 13 are respectively communicated with a plurality of feed inlets of the barrel 3, a plurality of groups of one-way air inlet valves 14 are respectively communicated and arranged on a plurality of groups of material conveying pipes 13, a cavity is arranged in the tank body 15, a feed inlet and a discharge outlet are arranged in the cavity, the feed inlet and the discharge outlet are communicated with the cavity, the output end of the discharge pipe 11 is communicated with the feed inlet of the cavity, and a constant pressure device is arranged on the outer side wall of the tank body 15 and is communicated with the cavity; firstly, one set of one-way air inlet valves 14 are opened to enable one set of material tanks 2 to be communicated with the interior of a cylinder 3, a first motor 8 is opened to drive a flywheel 9 to rotate, the flywheel 9 rotates and then drives a first piston plate 4 to slide left and right in the cylinder 3 through a connecting rod 10 and a push rod 7, the first piston plate 4 performs vacuum pumping on the interior of the cylinder 3 when sliding left, so that materials in one set of material tanks 2 enter the interior of the cylinder 3 through the conveying pipe 13 of one set of material conveying pipes, the one-way air inlet valves 14 are closed after the materials are extracted, the first piston plate 4 performs extrusion on the interior of the cylinder 3 through sliding right, the materials in the cylinder 3 are conveyed to the interior of a cavity through a discharging pipe 11 after opening a one-way exhaust valve 12, the materials in the plurality of sets of material tanks 2 are added in batches by respectively controlling the opening of the different one-way air inlet valves 14, and the convenience of adding different materials in the cavity under a high-pressure state is improved, the efficiency of adding of material is improved, through setting up constant voltage equipment, improves the pressure stability of the internal portion of jar 15, improves the processingquality of material, improves the practicality of device.

The utility model relates to a chemical autoclave with convenient material feeding, a constant pressure device comprises an exhaust hood 16, exhaust pipes 17, a limit plate 18, a second piston plate 19, a spring 20, a second sliding sleeve 21 and a pull ring 22, wherein the bottom end of the exhaust hood 16 is connected with the top end of a tank body 15 and communicated with the inside of a chamber, a plurality of groups of exhaust pipes 17 are respectively arranged in the middle of the outer side wall of the exhaust hood 16 and communicated with the inside of the exhaust hood 16, the limit plate 18 is fixedly arranged on the inner side wall of the exhaust hood 16, the second piston plate 19 can be arranged in the exhaust hood 16 in a vertical sliding manner, the position of the second piston plate 19 is arranged below the position of the exhaust pipe 17, the bottom end of the spring 20 is tightly attached to the top end of the second piston plate 19, the top end of the spring 20 is tightly attached to the top of the inner side wall of the exhaust hood 16, the bottom end of the second sliding sleeve 21 is connected with the top end of the exhaust hood 16, the pull ring 22 is arranged in the second sliding sleeve 21 in a vertically sliding manner, the bottom end of the pull ring 22 extends into the exhaust hood 16 and is connected with the top end of the second piston plate 19; the pressure in the chamber is increased after the external material enters the chamber, the high-pressure gas enters the exhaust hood 16 and pushes the second piston plate 19 upwards, when the pressure is increased continuously, the high-pressure gas pushes the second piston plate 19 upwards continuously to move, when the second piston plate 19 moves to the position above the plurality of exhaust pipes 17, the high-pressure gas at the lower part of the second piston plate 19 is discharged outwards through the exhaust pipes 17, when the pressure in the chamber reaches a set value, the pressure is reduced to make the second piston plate 19 move downwards through the pushing of the spring 20, so that the chamber is sealed by the second piston plate 19, the effect of automatic pressure relief in the chamber is achieved, the pressure stability in the chamber is improved, the safety of pressure control in the chamber is improved, the second piston plate 19 moves by pulling the pull ring 22 upwards, and the pressure in the chamber is relieved manually, the practicability of the device is improved.

The chemical autoclave convenient for feeding comprises a second motor 23 and stirring blades 25, wherein the second motor 23 is arranged at the top end of the tank body 15, a rotatable rotating shaft 24 is longitudinally arranged at the output end of the bottom end of the second motor 23, and a plurality of groups of stirring blades 25 are fixedly arranged on the outer side wall of the rotating shaft 24 and are arranged in a cavity; it is rotatory to drive pivot 24 through opening second motor 23, stirs the material in the cavity through multiunit stirring leaf 25 after pivot 24 is rotatory to improve the mixed convenience after different materials add to the cavity, improve chemical material's processingquality.

The chemical autoclave with convenient feeding disclosed by the utility model further comprises a plurality of groups of ventilation pipes 26 and a plurality of groups of dust screens 27, wherein the plurality of groups of ventilation pipes 26 are respectively communicated with and arranged on exhaust ports of the plurality of groups of material boxes 2, and the plurality of groups of dust screens 27 are respectively communicated with and arranged at air inlets of the plurality of groups of ventilation pipes 26; through setting up multiunit dust screen 27 and filtering the air that gets into in the material case 2 to reduce the pollution of outdoor air to the inside material of material case 2, improve the processingquality of material.

The chemical autoclave convenient for feeding comprises a plurality of groups of flowmeters 28, wherein the plurality of groups of flowmeters 28 are respectively communicated and arranged on a plurality of groups of material conveying pipes 13; through setting up multiunit flowmeter 28, improve the convenience of the material transport measurement in the multiunit material case 2, improve the interpolation precision of material.

The chemical high-pressure kettle convenient for feeding comprises an emergency exhaust valve 29, wherein the emergency exhaust valve 29 is arranged on the outer side wall of the tank body 15 and is communicated with the cavity; the safety and convenience of the pressure control in the chamber are improved by arranging the emergency exhaust valve 29.

The chemical high-pressure kettle convenient for feeding comprises a pressure gauge 30, wherein the pressure gauge 30 is arranged on the outer side wall of the tank body 15 and is communicated with the cavity; through setting up manometer 30, be convenient for survey the pressure numerical value in the chamber, improve the convenience of using.

The utility model relates to a chemical autoclave convenient for feeding, which is characterized in that when in use, one set of one-way air inlet valves 14 are opened to enable one set of material tanks 2 to be communicated with the interior of a cylinder 3, a first motor 8 is opened to drive a flywheel 9 to rotate, the flywheel 9 is rotated and then drives a first piston plate 4 to slide left and right in the cylinder 3 through a connecting rod 10 and a push rod 7, the first piston plate 4 vacuumizes the interior of the cylinder 3 when sliding left, so that the material in one set of material tanks 2 is conveyed into the interior of the cylinder 3 through one set of material conveying pipes 13, the one-way air inlet valves 14 are closed after the material is extracted, the first piston plate 4 slides right to extrude the interior of the cylinder 3, the material in the cylinder 3 is conveyed into a cavity through a discharge pipe 11 after opening of a one-way exhaust valve 12, and the materials in a plurality of sets of material tanks 2 are fed in batches by controlling the opening of different one-way air inlet valves 14 respectively, then the high-pressure gas enters the exhaust hood 16 and pushes the second piston plate 19 upwards, when the pressure is continuously increased, the high-pressure gas continuously pushes the second piston plate 19 upwards to move, when the second piston plate 19 moves to the position above the plurality of groups of exhaust pipes 17, the high-pressure gas at the lower part of the second piston plate 19 is discharged outwards through the exhaust pipes 17, when the pressure in the cavity reaches a set value, the pressure is reduced to make the second piston plate 19 move downwards through the pushing of the spring 20, so that the cavity is sealed by the second piston plate 19, then the second motor 23 is opened to drive the rotating shaft 24 to rotate, and after the rotating shaft 24 rotates, the materials in the cavity are stirred through the plurality of groups of stirring blades 25.

According to the chemical autoclave convenient for feeding, the installation mode, the connection mode or the arrangement mode are common mechanical modes, and the installation mode, the connection mode or the arrangement mode can be implemented as long as the beneficial effects are achieved; the first motor 8, the second motor 23, the flowmeter 28 and the pressure gauge 30 of the chemical autoclave provided by the utility model are purchased from the market, and technicians in the industry only need to install and operate the autoclave according to the attached operating instructions.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. A chemical autoclave convenient for feeding is characterized by comprising a support (1), a plurality of groups of material boxes (2), a cylinder body (3), a first piston plate (4), a fixing frame (5), a first sliding sleeve (6), a push rod (7), a first motor (8), a connecting rod (10), a discharge pipe (11), a one-way exhaust valve (12), a plurality of groups of material conveying pipes (13), a plurality of groups of one-way air inlet valves (14), a cylinder body (15) and a constant pressure device, wherein the plurality of groups of material boxes (2) are respectively arranged on the inner side wall of the support (1), a feed inlet and an air inlet are respectively arranged in the plurality of groups of material boxes (2), the feed inlet and the air inlet are respectively communicated with the plurality of groups of material boxes (2), the bottom end of the cylinder body (3) is connected with the top end of the support (1), the left end of the cylinder body (3) is provided with an opening which is communicated with the inside of the cylinder body (3), the right end of the cylinder body (3) is respectively provided with a plurality of feed inlets and a discharge outlet, the plurality of groups of feed inlets and the discharge outlets are communicated with the interior of the cylinder body (3), the first piston plate (4) can slide left and right inside the cylinder body (3), the fixed frame (5) is arranged on the inner side wall of the cylinder body (3), the first sliding sleeve (6) is fixedly arranged on the inner side wall of the fixed frame (5), the push rod (7) can slide left and right inside the first sliding sleeve (6), the right end of the push rod (7) is fixedly connected with the left end of the first piston plate (4), the bottom end of the first motor (8) is connected with the top end of the bracket (1), the output end of the first motor (8) is provided with the flywheel (9), the right end of the connecting rod (10) is rotatably connected with the left end of the push rod (7), the left end of the connecting rod (10) is rotatably connected with the outer side wall of the flywheel (9), the left end of the connecting rod (10) is arranged at the eccentric position of the bracket (1), the input end of the discharge pipe (11) is communicated with the discharge outlet of the feed conveying pipe (13), one-way exhaust valve (12) intercommunication sets up on row material pipe (11), the input of multiunit conveying pipeline (13) communicate in with multiunit material case (2) respectively, the output of multiunit conveying pipeline (13) communicates with the multiunit feed inlet of barrel (3) respectively, multiunit one-way admission valve (14) communicate respectively and set up on multiunit conveying pipeline (13), be provided with the cavity in jar body (15), be provided with feed inlet and bin outlet in the cavity, feed inlet and bin outlet all communicate with the cavity in, and the output and the cavity feed inlet of row material pipe (11) communicate, constant voltage device installs on the lateral wall of jar body (15) and communicate with the cavity.

2. The autoclave for chemical industry with convenient charging according to claim 1, characterized in that the constant pressure device comprises an exhaust hood (16), exhaust pipes (17), a limit plate (18), a second piston plate (19), a spring (20), a second sliding sleeve (21) and a pull ring (22), the bottom end of the exhaust hood (16) is connected with the top end of the tank body (15) and communicated with the chamber, a plurality of groups of exhaust pipes (17) are respectively arranged in the middle of the outer side wall of the exhaust hood (16) and communicated with the inside of the exhaust hood (16), the limit plate (18) is fixedly arranged on the inner side wall of the exhaust hood (16), the second piston plate (19) can be arranged inside the exhaust hood (16) in a vertical sliding manner, the position of the second piston plate (19) is arranged below the position of the exhaust pipes (17), the bottom end of the spring (20) is tightly attached to the top end of the second piston plate (19), and the top end of the spring (20) is tightly attached to the top of the inner side wall of the exhaust hood (16), the bottom end of the second sliding sleeve (21) is connected with the top end of the exhaust hood (16), the pull ring (22) can be arranged inside the second sliding sleeve (21) in a vertically sliding mode, and the bottom end of the pull ring (22) extends into the interior of the exhaust hood (16) and is connected with the top end of the second piston plate (19).

3. The chemical autoclave convenient for charging according to claim 1, further comprising a second motor (23) and stirring blades (25), wherein the second motor (23) is installed at the top end of the tank body (15), a rotatable rotating shaft (24) is longitudinally arranged at the output end of the bottom end of the second motor (23), and the multiple groups of stirring blades (25) are all fixedly installed on the outer side wall of the rotating shaft (24) and are arranged inside the chamber.

4. The chemical autoclave convenient for charging according to claim 1, further comprising a plurality of sets of ventilation pipes (26) and a plurality of sets of dust screens (27), wherein the plurality of sets of ventilation pipes (26) are respectively communicated with and arranged at the exhaust ports of the plurality of sets of material tanks (2), and the plurality of sets of dust screens (27) are respectively communicated and arranged at the air inlet ports of the plurality of sets of ventilation pipes (26).

5. The autoclave for chemical industry with convenient charging according to claim 1, further comprising a plurality of sets of flow meters (28), wherein the plurality of sets of flow meters (28) are respectively communicated with the plurality of sets of material conveying pipes (13).

6. A chemical autoclave with easy charging according to claim 1, characterized by further comprising an emergency vent valve (29), the emergency vent valve (29) being installed on the outer side wall of the tank (15) and communicating with the chamber.

7. A chemical autoclave with convenient charging according to claim 1, characterized by further comprising a pressure gauge (30), wherein the pressure gauge (30) is installed on the outer side wall of the tank (15) and is communicated with the chamber.