A cylinder pressure reducing valve

Abstract

The utility model belongs to valve technical field especially relates to a gas cylinder pressure reducing valve. The gas cylinder pressure reducing valve, including valve body and valve cover, wherein the side of valve body is equipped with air inlet hole, valve core is connected with the valve body sliding, and the spring is equipped between valve core and valve body, adjusting knob, adjusting knob includes knob body and adjusting lever, knob body sets up the side of valve body, adjusting lever sets up the inside of valve body and is connected with valve body rotation, the outer end of adjusting lever is connected with knob body, the inner end outer wall of adjusting lever is equipped with the guide surface, it is inclined plane or cambered surface, the guide surface is connected with valve core pressure, and its opening and closing operation is simple and convenient.

Description

Technical Field

[0001] This utility model belongs to the field of valve technology, and specifically relates to a gas cylinder pressure reducing valve. Background Technology

[0002] Pressure reducing valves can reduce and stabilize unstable, high-pressure gas sources (such as gas cylinders) at a precise pressure value that meets the needs of downstream equipment. However, the pressure of gas in the cylinder will change as the remaining gas level fluctuates, requiring different pressure reducing valves to be used. Existing pressure reducing valves are generally opened or closed by a knob, which is usually connected to the valve body by a thread. This makes opening and closing the valve difficult and requires many turns. Utility Model Content

[0003] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a gas cylinder pressure reducing valve that is easy to operate.

[0004] A gas cylinder pressure reducing valve includes: a valve body and a valve cover, wherein an air inlet is provided on the side of the valve body; a valve core slidably connected to the valve body, and a spring is provided between the valve core and the valve body; and an adjusting knob, the adjusting knob including a knob body and an adjusting rod, the knob body being disposed on the side of the valve body, the adjusting rod being disposed inside the valve body and rotatably connected to the valve body, the outer end of the adjusting rod being connected to the knob body, and the outer wall of the inner end of the adjusting rod being provided with a guide surface, the guide surface being an inclined surface or an arc surface, and the guide surface being pressed against the valve core.

[0005] As a further improvement to the above technical solution, it includes a pressure-reducing membrane assembly, a pressure-limiting component, and an elastic component, wherein the pressure-reducing membrane assembly is provided at the connection between the valve body and the valve cover, the pressure-limiting component is disposed through the pressure-reducing membrane assembly, one end of the elastic component is connected to the pressure-limiting component, and the other end of the elastic component abuts against the valve cover.

[0006] As a further improvement to the above technical solution, the pressure-reducing diaphragm assembly is sealed to the valve body and the valve cover respectively.

[0007] As a further improvement to the above technical solution, the pressure-reducing membrane assembly includes an elastic sealing sheet, and the pressure-limiting element is connected to the elastic sealing sheet.

[0008] As a further improvement to the above technical solution, the elastic sealing sheet is provided with an elastic part with an arched cross-section.

[0009] As a further improvement to the above technical solution, the pressure-reducing membrane assembly further includes a gasket disposed on the elastic sealing sheet, and the elastic member abuts against the gasket.

[0010] As a further improvement to the above technical solution, it also includes a sleeve portion, in which the upper part of the pressure limiting member is inserted.

[0011] The beneficial effects of this utility model are as follows: when the knob body is rotated, the adjusting rod rotates, the guide surface also rotates, the contact position between the guide surface and the valve core changes, thereby pressing the valve core downward and opening the gas cylinder pressure reducing valve; when the knob body is rotated in the opposite direction, the valve core is reset under the action of the spring, which has the advantage of simple operation. Attached Figure Description

[0012] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0013] Figure 1 This is a cross-sectional view of the gas cylinder pressure reducing valve described in this utility model; Figure 2 This is a schematic diagram of the gas cylinder pressure reducing valve described in this utility model.

[0014] In the diagram: Valve body-100, air inlet-110, valve cover-200, elastic sealing sheet-311, elastic part-312, gasket-313, pressure limiting part-320, elastic component-330, sleeve part-340, knob body-410, adjusting rod-420, 500-valve core. Detailed Implementation

[0015] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0016] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0017] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0018] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0019] Reference Figures 1-2 A gas cylinder pressure reducing valve includes: a valve body 100 and a valve cover 200, wherein an air inlet 110 is provided on the side of the valve body 100; a valve core 500, which is slidably connected to the valve body 100, and a spring is provided between the valve core 500 and the valve body 100; and an adjusting knob, the adjusting knob including a knob body 410 and an adjusting rod 420, the knob body 410 being disposed on the side of the valve body 100, the adjusting rod 420 being disposed inside the valve body 100 and rotatably connected to the valve body 100, the outer end of the adjusting rod 420 being connected to the knob body 410, and the outer wall of the inner end of the adjusting rod 420 being provided with a guide surface, the guide surface being an inclined surface or an arc surface, and the guide surface being pressed against the valve core 500.

[0020] When in use, rotating the knob body 410 causes the adjusting rod 420 to rotate, and the guide surface also rotates. The contact position between the guide surface and the valve core 500 changes, thereby pressing the valve core 500 downward and opening the gas cylinder pressure reducing valve. Reverse rotation of the knob body 410 causes the valve core 500 to reset under the action of the spring.

[0021] In this embodiment, a pressure-reducing membrane assembly, a pressure-limiting member 320, and an elastic member 330 are also included. The pressure-reducing membrane assembly is located at the connection between the valve body 100 and the valve cover 200. The pressure-limiting member 320 is disposed through the pressure-reducing membrane assembly. One end of the elastic member 330 is connected to the pressure-limiting member 320, and the other end of the elastic member 330 abuts against the valve cover 200.

[0022] In this embodiment, the pressure-reducing diaphragm assembly is sealed to the valve body 100 and the valve cover 200, respectively.

[0023] In this embodiment, the pressure-reducing diaphragm assembly includes an elastic sealing sheet 311, and the pressure-limiting member 320 is connected to the elastic sealing sheet 311. By setting the elastic sealing sheet 311, the sealing performance of the entire valve body 100 is ensured on the one hand; on the other hand, since the elastic sealing sheet 311 itself is elastic, when the air pressure inside the valve body 100 changes, the elasticity of the elastic sealing sheet 311 will push the pressure-limiting member 320 upward, thereby achieving active adjustment.

[0024] In this embodiment, the elastic sealing sheet 311 is provided with an elastic portion 312 with an arched cross-section; this structure makes the elastic sealing sheet 311 have good elasticity and can actively reset.

[0025] In this embodiment, the pressure-reducing membrane assembly further includes a gasket 313 disposed on the elastic sealing sheet 311, and the elastic member 330 abuts against the gasket 313; this arrangement ensures that when the elastic member 330 acts downward, the gasket 313 is subjected to uniform force and will not deform due to changes in local pressure.

[0026] In this embodiment, a sleeve portion 340 is also included, in which the upper part of the pressure limiting member 320 is inserted; this structure can improve the sealing performance of the gas cylinder pressure reducing valve.

[0027] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A gas cylinder pressure reducing valve, characterized in that, include: Valve body (100) and valve cover (200), wherein an air inlet (110) is provided on the side of the valve body (100). A valve core (500) is slidably connected to the valve body (100), and a spring is provided between the valve core (500) and the valve body (100); An adjustment knob is provided, comprising a knob body (410) and an adjustment rod (420). The knob body (410) is disposed on the side of the valve body (100), and the adjustment rod (420) is disposed inside the valve body (100) and rotatably connected to the valve body (100). The outer end of the adjustment rod (420) is connected to the knob body (410), and the outer wall of the inner end of the adjustment rod (420) is provided with a guide surface, which is an inclined surface or an arc surface, and the guide surface is pressed against the valve core (500).

2. A gas cylinder pressure reducing valve as described in claim 1, characterized in that, It also includes a pressure-reducing membrane assembly, a pressure-limiting element (320), and an elastic member (330), wherein the pressure-reducing membrane assembly is provided at the connection between the valve body (100) and the valve cover (200), the pressure-limiting element (320) is disposed through the pressure-reducing membrane assembly, one end of the elastic member (330) is connected to the pressure-limiting element (320), and the other end of the elastic member (330) abuts against the valve cover (200).

3. A gas cylinder pressure reducing valve as described in claim 2, characterized in that, The pressure-reducing diaphragm assembly is sealed to the valve body (100) and the valve cover (200) respectively.

4. A gas cylinder pressure reducing valve as described in claim 2, characterized in that, The pressure-reducing membrane assembly includes an elastic sealing sheet (311), and the pressure-limiting member (320) is connected to the elastic sealing sheet (311).

5. A gas cylinder pressure reducing valve as described in claim 4, characterized in that, The elastic sealing sheet (311) has an elastic part (312) with an arched cross-section.

6. A gas cylinder pressure reducing valve as described in claim 4, characterized in that, The pressure relief membrane assembly also includes a gasket (313) disposed on the elastic sealing sheet (311), and the elastic member (330) abuts against the gasket (313).

7. A gas cylinder pressure reducing valve as described in claim 2, characterized in that, It also includes a socket (340), in which the upper part of the pressure limiting member (320) is inserted.

Images