Steel cylinder with variable air cavity

Abstract

The utility model relates to the technical field of experimental equipment, and particularly provides a variable air cavity steel cylinder which comprises a multi-cavity steel cylinder, three air outlet pipes communicated with an air cavity are uniformly and fixedly mounted at the top of the multi-cavity steel cylinder, a second control valve and an air inlet pipe are arranged on a pipeline of each air outlet pipe, a first control valve is arranged on a pipeline of each air inlet pipe, and a second control valve is arranged on the pipeline of each first control valve. The upper ends of the three air outlet pipes are jointly and fixedly connected with a connector, and the top of the connector is fixedly connected with a pipe fitting with a valve. The gas cavities are formed in the multi-cavity steel cylinder and are communicated with the gas outlet pipes, different gases required by experiments are supplied by adjusting the second control valve and the valve, the structure integrating the different gases in the multi-cavity steel cylinder is achieved, the occupied space is small, carrying is facilitated, and the problems that the gas cavities in the steel cylinder are single in structure, the gas outlet pipes are communicated with the gas cavities, and the like are solved. And a laboratory needs to use various gases, and if a plurality of steel cylinders are adopted, the occupied space is large, and the carrying is inconvenient.

Description

Technical Field

[0001] The utility model relates to the technical field of experimental equipment, in particular to a steel cylinder with a variable air cavity. Background Art

[0002] Steel cylinders are steel cylinders that store high-pressure oxygen, coal gas, liquefied petroleum gas, etc. Safe storage and transportation of steel cylinders Gas cylinders generally contain permanent gases, liquefied gases or mixed gases. The management of gas cylinders by gas cylinder filling units, gas cylinder inspection units, gas cylinder using units (including factories, laboratories, hospitals, schools, disease control centers, electronic rooms, clean rooms, industrial institutions, etc.), bottled gas and gas cylinder distribution units urgently needs to be improved, and the safety management of the transportation and storage of gas cylinders should be strengthened. In physical and chemical experiments, oxygen, nitrogen, hydrogen, argon and other gases are often used. These gases are generally stored in special high-pressure gas cylinders.

[0003] With respect to the above-mentioned related technologies, the inventor believes that there are the following defects:

[0004] For steel cylinders, the gas cavity structure inside is single, and the laboratory needs to use a variety of gases. If multiple steel cylinders are used, it will not only take up a lot of space, but also be inconvenient to carry. Therefore, it is necessary to provide a variable gas cavity steel cylinder to solve the above technical problems. Utility Model Content

[0005] The technical problem to be solved by the utility model is that for a steel cylinder, the gas cavity structure inside is single, while a laboratory needs to use a variety of gases. If multiple steel cylinders are used, not only a large space is occupied, but also it is inconvenient to carry. In view of the above-mentioned defects of the prior art, a variable gas cavity steel cylinder is provided, including a multi-cavity steel cylinder, and the top of the multi-cavity steel cylinder is evenly fixedly installed with three gas outlet pipes connected to the gas cavity, each gas outlet pipe is provided with a second control valve and an air inlet pipe, and the air inlet pipe is provided with a first control valve, and the upper ends of the three gas outlet pipes are commonly fixedly connected with a connector, and the top of the connector is fixedly connected with a valved pipe fitting. The utility model opens multiple gas cavities inside the multi-cavity steel cylinder, and is connected with the gas outlet pipe, and realizes the supply of different gases required by the experiment by adjusting the second control valve and the valve. The structure that integrates different gases inside the multi-cavity steel cylinder takes up little space and is convenient for carrying, and solves the technical problem that for a steel cylinder, the gas cavity structure inside is single, while a laboratory needs to use a variety of gases, and if multiple steel cylinders are used, not only a large space is occupied, but also it is inconvenient to carry.

[0006] To achieve the above-mentioned purpose, the technical solution of the utility model is: a variable gas chamber steel cylinder, including a multi-chamber steel cylinder, three gas chambers are evenly opened inside the multi-chamber steel cylinder, and three gas outlet pipes connected with the gas chambers are evenly fixedly installed on the top of the multi-chamber steel cylinder, a second control valve and an air inlet pipe are arranged on the pipeline of each of the gas outlet pipes, a first control valve is arranged on the pipeline of the air inlet pipe, the upper ends of the three gas outlet pipes are commonly fixedly connected with a connecting head, and the top of the connecting head is fixedly connected with a valved pipe fitting.

[0007] It is further arranged that the air outlet pipes are distributed in an isosceles triangle array, and the second control valve is located above the air inlet pipe.

[0008] It is further provided that one end of the valved pipe fitting is fixedly connected with a threaded pipe, and a valve is provided on the top of the valved pipe fitting.

[0009] It is further provided that a fixing plate is fixedly mounted on the outer side of the multi-chamber steel cylinder, and a walking wheel is symmetrically fixedly mounted on one side of the fixing plate.

[0010] It is further provided that a movable cavity is opened inside the fixed plate, a movable plate is slidably connected to the inner side of the movable cavity, and a pull rod penetrating the fixed plate is fixedly installed on the upper surface of the movable plate.

[0011] It is further configured that a plurality of limit grooves are evenly opened on the outer side of the pull rod, a return spring is fixedly installed on the front surface of the fixed plate, one end of the return spring is fixedly connected to a limit piece connected to the movable cavity, and one end of the limit piece is engaged with the limit groove.

[0012] It is further provided that the limiting member is in a T-shaped structure, and the limiting member is located inside the return spring.

[0013] Compared with the related art, the variable gas cavity steel cylinder provided by the utility model has the following beneficial effects:

[0014] The utility model provides a variable gas cavity steel cylinder, which opens a plurality of gas cavities inside the multi-cavity steel cylinder and is connected with an air outlet pipe, and supplies different gases required by the experiment by adjusting a second control valve and a valve. The structure that integrates different gases inside the multi-cavity steel cylinder occupies a small space and is convenient for transportation, and solves the technical problem that the gas cavity structure inside the steel cylinder is single, while the laboratory needs to use a variety of gases, and if a plurality of steel cylinders are used, not only a large space is occupied, but also it is inconvenient to carry.

[0015] The utility model provides a variable air cavity steel cylinder, which is provided with a pull rod and a walking wheel. By pulling the pull rod out of a certain length from the inside of a fixed plate and utilizing the elastic pulling force of a reset spring, one end of a limiting member connected to the pull rod is inserted and fixed in the inside of a limiting groove at a corresponding position, thereby facilitating use by users of different heights and facilitating pulling the air cavity steel cylinder to move. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of a preferred embodiment of a variable gas cavity steel cylinder provided by the utility model;

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of part of the multi-cavity steel cylinder of the utility model;

[0018] Figure 3 This is a schematic diagram of the main structure of the utility model;

[0019] Figure 4 It is a left-side structural schematic diagram of the connection between the pull rod and the fixing plate of the utility model;

[0020] Figure 5 It is a partial enlarged view of part A of the utility model.

[0021] Numbers in the figure: 1. Multi-chamber cylinder; 2. Limiting piece; 3. Outlet pipe; 4. Connecting head; 5. Pipe fitting with valve; 6. First control valve; 7. Second control valve; 8. Inlet pipe; 9. Pull rod; 10. Fixed plate; 11. Traveling wheel; 12. Gas chamber; 13. Limiting groove; 14. Movable chamber; 15. Movable plate; 16. Reset spring; 17. Screw pipe; 18. Valve. DETAILED DESCRIPTION

[0022] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the accompanying drawings. The accompanying drawings show typical embodiments of the present invention.

[0023] Embodiment 1:

[0024] like Figure 1-5 As shown, a variable gas chamber steel cylinder of the utility model comprises a multi-chamber steel cylinder 1, three gas chambers 12 are evenly opened inside the multi-chamber steel cylinder 1, and three gas outlet pipes 3 connected with the gas chambers 12 are evenly fixedly installed on the top of the multi-chamber steel cylinder 1, a second control valve 7 and an air inlet pipe 8 are arranged on the pipeline of each gas outlet pipe 3, a first control valve 6 is arranged on the pipeline of the air inlet pipe 8, the upper ends of the three gas outlet pipes 3 are commonly fixedly connected with a connector 4, and the top of the connector 4 is fixedly connected with a valved pipe fitting 5.

[0025] like Figure 1 As shown, the air outlet pipes 3 are distributed in an isosceles triangle array, and the second control valve 7 is located above the air inlet pipe 8 .

[0026] like Figure 1 As shown, one end of the valved pipe 5 is fixedly connected with a threaded pipe 17 , and a valve 18 is provided on the top of the valved pipe 5 .

[0027] During implementation, multiple gas chambers 12 are opened inside the multi-chamber steel cylinder 1 and connected with the gas outlet pipe 3. By adjusting the second control valve 7 and the valve 18, different gases required for the experiment can be supplied. The structure that integrates different gases inside the multi-chamber steel cylinder 1 occupies a small space and is convenient for transportation. It solves the technical problem that the gas chamber structure inside the steel cylinder is single, while the laboratory needs to use a variety of gases. If multiple steel cylinders are used, it will not only occupy a large space but also be inconvenient to carry.

[0028] Embodiment 2:

[0029] like Figure 1-5 As shown, on the basis of embodiment 1, the utility model provides a technical solution: a fixed plate 10 is fixedly installed on the outer side of the multi-chamber cylinder 1, a walking wheel 11 is symmetrically fixedly installed on one side of the fixed plate 10, a movable cavity 14 is opened inside the fixed plate 10, a movable plate 15 is slidably connected to the inner side of the movable cavity 14, a pull rod 9 passing through the fixed plate 10 is fixedly installed on the upper surface of the movable plate 15, a plurality of limit grooves 13 are evenly opened on the outer side of the pull rod 9, a reset spring 16 is fixedly installed on the front surface of the fixed plate 10, one end of the reset spring 16 is fixedly connected to a limit member 2 connected to the movable cavity 14, one end of the limit member 2 is engaged with the limit groove 13, the limit member 2 is T-shaped, and the limit member 2 is located inside the reset spring 16.

[0030] During implementation, a pull rod 9 and a walking wheel 11 are provided. By pulling the pull rod 9 out of the interior of the fixed plate 10 by a certain length and utilizing the elastic pulling force of the return spring 16, one end of the limit member 2 connected thereto is inserted and fixed inside the limit groove 13 at the corresponding position, thereby facilitating the use of users of different heights and facilitating the pulling of the air cavity cylinder to move.

[0031] When the technical solution needs to be moved, the multi-chamber steel cylinder 1 is first pulled to a certain tilt angle so that the walking wheel 11 contacts the ground, and then the pull rod 9 is used to pull the multi-chamber steel cylinder 1 to move. When the height of the pull rod 9 needs to be adjusted, the limiter 2 is first pulled to stretch the reset spring 16 so that one end of the limiter 2 is separated from the inside of the limit groove 13, and then the pull rod 9 is pulled out of the inside of the fixed plate 10 to a certain length, and finally the limiter 2 is released. At this time, under the elastic tension of the reset spring 16, one end of the limiter 2 is inserted and fixed in the inside of the limit groove 13 at the corresponding position, so that the pull rod 9 after the height adjustment is fixed. Different gas chambers 12 contain different gases. When in use, the valve 18 and the second control valve 7 at the corresponding position are loosened to allow the gas to be discharged through the outlet pipe 3 and the valve pipe 5. The inlet pipe 8 can be used to replenish gas into the gas chamber 12. A pressure valve (not shown in the figure) is also provided on the pipeline of the outlet pipe 3 to detect the air pressure value inside the gas chamber 12.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A variable gas chamber steel cylinder, comprising a multi-chamber steel cylinder (1), characterized in that: The multi-chamber steel cylinder (1) is evenly provided with three gas chambers (12) inside, and three gas outlet pipes (3) connected with the gas chambers (12) are evenly fixedly installed on the top of the multi-chamber steel cylinder (1), and each of the gas outlet pipes (3) is provided with a second control valve (7) and an air inlet pipe (8), and the air inlet pipe (8) is provided with a first control valve (6), and the upper ends of the three gas outlet pipes (3) are commonly fixedly connected with a connector (4), and the top of the connector (4) is fixedly connected with a valved pipe fitting (5).

2. A variable gas chamber steel cylinder according to claim 1, characterized in that: The air outlet pipes (3) are distributed in an isosceles triangle array, and the second control valve (7) is located above the air inlet pipe (8).

3. A variable gas chamber steel cylinder according to claim 1, characterized in that: One end of the valved pipe (5) is fixedly connected to a threaded pipe (17), and a valve (18) is provided on the top of the valved pipe (5).

4. A variable gas chamber steel cylinder according to claim 1, characterized in that: A fixing plate (10) is fixedly mounted on the outer side of the multi-chamber steel cylinder (1), and a running wheel (11) is symmetrically fixedly mounted on one side of the fixing plate (10).

5. A variable gas chamber steel cylinder according to claim 4, characterized in that: A movable cavity (14) is provided inside the fixed plate (10), a movable plate (15) is slidably connected to the inner side of the movable cavity (14), and a pull rod (9) penetrating the fixed plate (10) is fixedly mounted on the upper surface of the movable plate (15).

6. A variable gas chamber steel cylinder according to claim 5, characterized in that: A plurality of limit grooves (13) are evenly arranged on the outer side of the pull rod (9); a return spring (16) is fixedly installed on the front surface of the fixed plate (10); one end of the return spring (16) is fixedly connected to a limit member (2) connected to the movable cavity (14); one end of the limit member (2) is engaged with the limit groove (13).

7. A variable gas chamber steel cylinder according to claim 6, characterized in that: The limiting member (2) has a T-shaped structure, and the limiting member (2) is located inside the return spring (16).

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