Pressure reducing valve for high-pressure gas cylinder

Abstract

The utility model relates to the technical field of pressure reducing valves, in particular to a pressure reducing valve for a high-pressure gas cylinder, which comprises a pressure reducing valve body butted with the high-pressure gas cylinder, a pressure gauge mounted on the pressure reducing valve body and used for displaying output gas pressure, and a support ring mounted on the pressure reducing valve body and sleeved on the outer side of an adjusting knob on the pressure reducing valve. An adjusting wheel is fixed at the outer end of the adjusting knob; the pressure reducing valve comprises a pressure reducing valve body and an adjusting rod rotationally installed on the pressure reducing valve body, an adjusting unit used for driving an adjusting wheel to rotate is installed at the outer end of the adjusting rod, and the adjusting unit is used for accurately adjusting and controlling the pressure reducing valve body. And therefore, the output air pressure of the pressure reducing valve is controlled, adjustment is more labor-saving, and personnel can adjust more accurately.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure reducing valves, in particular to a pressure reducing valve for a high-pressure gas cylinder. Background Art

[0002] A high-pressure gas cylinder refers to a gas cylinder with a working pressure equal to or greater than 8MPa. During use, the threaded interface of the high-pressure gas cylinder needs to be connected to the pressure reducing valve, and then the pressure is reduced and the gas in the high-pressure gas cylinder is discharged through the pressure reducing valve. When a conventional pressure reducing valve is in use, there is a pressure gauge that displays the output air pressure. People adjust the output air pressure by rotating the knob on the pressure reducing valve. However, the traditional knob has a small caliber, and it is more difficult for people to adjust it. When it is turned with greater force, it is difficult to accurately control the output air pressure. Utility Model Content

[0003] The utility model aims to provide a pressure reducing valve for a high-pressure gas cylinder, so as to solve the problem that the accuracy of the existing pressure reducing valve is difficult to control during adjustment.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A pressure reducing valve for a high-pressure gas cylinder comprises a pressure reducing valve body connected to the high-pressure gas cylinder, a pressure gauge for displaying the output gas pressure being mounted on the pressure reducing valve body, a support ring mounted on the pressure reducing valve body, the support ring being sleeved on the outside of an adjusting knob on the pressure reducing valve, and an adjusting wheel being fixed to the outer end of the adjusting knob; and an adjusting rod rotatably mounted on the pressure reducing valve body, an adjusting unit for driving the adjusting wheel to rotate being mounted on the outer end of the adjusting rod, and the adjusting unit being used for accurately regulating the pressure reducing valve body.

[0006] Preferably, the adjustment unit includes a pinion fixed to the outer end of the adjustment rod, the pinion meshes with the adjustment wheel, and an adjustment arm is fixed to the top of the adjustment rod, an auxiliary part is installed on the adjustment arm, and the auxiliary part assists the personnel to drive the adjustment arm to rotate.

[0007] Preferably, the auxiliary component includes a grip rod and a docking seat fixed to the outer end of the adjustment arm, a rotating shaft is fixed to the docking seat, and the docking seat is rotatably docked with the grip rod via the rotating shaft.

[0008] Preferably, a groove which matches with the grip rod is formed on the outer side of the adjusting arm.

[0009] Preferably, a sliding opening is provided on the grip rod, and the grip rod is slidably connected to the rotating shaft through the sliding opening, and an arc plate is fixed to the outer end of the adjustment arm, and the arc plate fits with the grip rod in a vertical state.

[0010] Preferably, a protective frame is fixed on the top of the support ring, the protective frame is slidably plugged with the adjusting rod, and the protective frame is wrapped around the outer side of the adjusting wheel and the pinion gear.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. In this scheme, the traditional pressure reducing valve is optimized, and the designed adjustment unit is used to assist personnel in turning the adjustment knob in the pressure reducing valve, thereby controlling the output air pressure of the pressure reducing valve, making the adjustment more labor-saving, so that personnel can make adjustments more accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure after the utility model is docked with a high-pressure gas cylinder;

[0014] Figure 2 This is the front view of the utility model after docking with the high-pressure gas cylinder;

[0015] Figure 3 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 4 This is a schematic diagram of another structural form of the auxiliary component of the utility model;

[0017] Figure 5 This is a schematic diagram of the connection between the pinion and the regulating wheel of the utility model;

[0018] Figure 6 This is a schematic diagram of the docking of the handle and the arc plate of the utility model.

[0019] In the accompanying drawings, the list of parts represented by each reference numeral is as follows: 1. Pressure reducing valve body; 2. Support ring; 3. Adjusting wheel; 4. Adjusting rod; 5. Adjusting unit; 6. Pinion; 7. Adjusting arm; 8. Auxiliary part; 9. Grip; 10. Docking seat; 11. Rotating shaft; 12. Groove; 13. Sliding mouth; 14. Arc plate; 15. Protective frame. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] like Figure 1-Figure 4As shown, a pressure reducing valve for a high-pressure gas cylinder in the figure includes a pressure reducing valve body 1 connected to the high-pressure gas cylinder, a pressure gauge for displaying the output gas pressure is installed on the pressure reducing valve body 1, and also includes a support ring 2 installed on the pressure reducing valve body 1, the support ring 2 is sleeved on the outside of the adjusting knob on the pressure reducing valve, and an adjusting wheel 3 is fixed to the outer end of the adjusting knob; and an adjusting rod 4 rotatably installed on the pressure reducing valve body 1, and an adjusting unit 5 for driving the adjusting wheel 3 to rotate is installed on the outer end of the adjusting rod 4, and the adjusting unit 5 is used to accurately control the pressure reducing valve body 1.

[0022] Specifically, when using a high-pressure gas cylinder, the operator controls the adjustment unit 5 to drive the adjustment wheel 3 to rotate, which makes the adjustment more labor-saving, thereby achieving accurate control of the output gas pressure;

[0023] For further reference, Figure 3-Figure 5 The adjusting unit 5 includes a pinion 6 fixed to the outer end of the adjusting rod 4, the pinion 6 is meshed with the adjusting wheel 3, an adjusting arm 7 is fixed to the top of the adjusting rod 4, an auxiliary part 8 is installed on the adjusting arm 7, and the auxiliary part 8 assists the personnel to drive the adjusting arm 7 to rotate;

[0024] The auxiliary component 8 includes a grip rod 9 and a docking seat 10 fixed to the outer end of the adjustment arm 7, a rotating shaft 11 is fixed to the docking seat 10, and the docking seat 10 is rotatably docked with the grip rod 9 through the rotating shaft 11;

[0025] The adjustment unit 5 realizes the principle of labor-saving adjustment: the rotation of the adjustment arm 7 drives the rotation of the adjustment rod 4 and the pinion 6. The diameter of the pinion 6 is much smaller than the diameter of the adjustment wheel 3, so that the personnel rotates the adjustment rod 4, drives the pinion 6 to rotate, and drives the adjustment wheel 3 to rotate, which is more labor-saving and the personnel can control the output air pressure more accurately.

[0026] By rotating the grip 9, when the output air pressure is not being adjusted, the personnel can rotate the grip 9 to make it fit the adjustment arm 7, thereby avoiding misoperation by the personnel.

[0027] like Figure 4 As shown, this is an embodiment of optimizing the shape of the adjustment arm 7. In this embodiment, a groove 12 is provided on the outer side of the adjustment arm 7 to match the grip rod 9;

[0028] Among them, through the designed groove 12, when the handle 9 is rotated to fit the adjustment arm 7, it can be hidden in the groove 12, reducing the space occupied. At the same time, magnetic blocks that attract each other can be designed in the groove 12 and on the outside of the handle 9, so that it is more stable when fitted in the groove 12.

[0029] refer to Figure 6This is an embodiment for optimizing the stability of the grip 9 during adjustment. The grip 9 is provided with a sliding opening 13, through which the grip 9 is slidably connected to the rotating shaft 11, and an arc plate 14 is fixed to the outer end of the adjustment arm 7, and the arc plate 14 fits the grip 9 in the vertical state;

[0030] After the handle 9 is rotated to a vertical state, the outer end of the handle 9 fits against the arc plate 14, and then the handle 9 is pushed so that the sliding opening 13 moves an end distance along the rotating shaft 11, so that the outer side wall of the handle 9 fits against the outer wall of the arc plate 14. When the handle 9 is in a vertical state, the adjustment is more stable.

[0031] See also Figure 4 and Figure 5 This is an embodiment for improving the safety of the connection between the adjusting wheel 3 and the pinion 6. A protective frame 15 is fixed on the top of the support ring 2, and the protective frame 15 is slidably connected with the adjusting rod 4, and the protective frame 15 is wrapped around the outer side of the adjusting wheel 3 and the pinion 6;

[0032] The designed protection frame 15 can prevent people from accidentally touching the adjusting wheel 3 and the pinion 6, thereby improving safety performance.

[0033] To achieve precise adjustment of the output pressure of the high-pressure gas cylinder, first, the personnel connect the air inlet end of the pressure reducing valve body 1 with the threaded interface of the high-pressure gas cylinder, and then connect it with the air outlet end of the pressure reducing valve body 1 through the exhaust pipe. Then, the personnel turn on the knob of the high-pressure gas cylinder, and then use the adjustment unit 5 to drive the adjustment wheel 3 to follow the rotation, so as to achieve precise adjustment of the output pressure.

[0034] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A pressure reducing valve for a high-pressure gas cylinder, comprising a pressure reducing valve body (1) connected to the high-pressure gas cylinder, wherein a pressure gauge for displaying output gas pressure is installed on the pressure reducing valve body (1), characterized in that: Also includes: a support ring (2) mounted on the pressure reducing valve body (1), the support ring (2) being sleeved on the outside of an adjusting knob on the pressure reducing valve, and an adjusting wheel (3) being fixed to the outer end of the adjusting knob; and, An adjusting rod (4) is rotatably mounted on the pressure reducing valve body (1), wherein an adjusting unit (5) for driving the adjusting wheel (3) to rotate is mounted on the outer end of the adjusting rod (4), and the adjusting unit (5) is used to accurately adjust the pressure reducing valve body (1).

2. A pressure reducing valve for a high-pressure gas cylinder according to claim 1, characterized in that: The adjustment unit (5) comprises a pinion (6) fixed to the outer end of the adjustment rod (4), the pinion (6) being meshed with the adjustment wheel (3), and an adjustment arm (7) being fixed to the top of the adjustment rod (4), an auxiliary component (8) being mounted on the adjustment arm (7), and an auxiliary person is assisted by the auxiliary component (8) to drive the adjustment arm (7) to rotate.

3. A pressure reducing valve for a high-pressure gas cylinder according to claim 2, characterized in that: The auxiliary component (8) comprises a gripping rod (9) and a docking seat (10) fixed to the outer end of the adjusting arm (7); a rotating shaft (11) is fixed to the docking seat (10) and is rotatably docked with the gripping rod (9) via the rotating shaft (11).

4. A pressure reducing valve for a high-pressure gas cylinder according to claim 3, characterized in that: The outer side of the adjustment arm (7) is provided with a groove (12) which is adapted to fit the grip rod (9).

5. A pressure reducing valve for a high-pressure gas cylinder according to claim 4, characterized in that: The gripping rod (9) is provided with a sliding opening (13), and the gripping rod (9) is slidably connected to the rotating shaft (11) via the sliding opening (13); an arc-shaped plate (14) is fixed to the outer end of the adjusting arm (7), and the arc-shaped plate (14) fits the gripping rod (9) in a vertical state.

6. A pressure reducing valve for a high-pressure gas cylinder according to claim 2, characterized in that: A protective frame (15) is fixed on the top of the support ring (2), the protective frame (15) is slidably plugged into the adjustment rod (4), and the protective frame (15) is wrapped around the outside of the adjustment wheel (3) and the pinion (6).

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