A linkage valve assembly for a pressure reducing linkage pressure reducer

Abstract

The present invention discloses a linkage valve assembly for a pressure-reducing linkage pressure reducer, comprising a rubber diaphragm, a valve seat, a return spring, and a spherical valve. A center hole is formed in the center of the rubber diaphragm. The valve seat is sealably inserted into the center hole of the rubber diaphragm and fixedly connected to the rubber diaphragm. A stepped hole with decreasing diameter from bottom to top is provided within the valve seat. The stepped hole extends through the valve seat at its upper and lower ends. The outer diameter of the spherical valve is larger than the diameter of the upper end of the stepped hole and smaller than the diameter of the lower end of the stepped hole. The spherical valve is located within the lower end of the valve seat. The return spring is located within the upper end of the valve seat. The upper end of the return spring is fixed to the inner wall of the valve seat, and the lower end is fixedly connected to the spherical valve. The spherical valve is separated from the valve seat under the thrust of the return spring. The present invention opens and closes the valve seat by providing the spherical valve and the return spring. The valve seat is simple in structure, rational in design, stable in working performance, easy to operate, and saves manpower and material resources.

Description

Technical Field

[0001] The present invention relates to the technical field of pressure reducers, and in particular to a linkage valve assembly for a pressure reducing linkage pressure reducer. Background Art

[0002] Currently, the gas supply system equipped with a pressure reducer has the problem that the downstream gas cannot be automatically released after the pressure reducer switch is turned off. If a closed cavity is formed downstream, the downstream equipment will always be under pressure, which will cause damage to some valves and sensitive components and shorten their service life. Summary of the Invention

[0003] The purpose of the present invention is to remedy the defects of the prior art and provide a linkage valve assembly for a pressure reducing linkage pressure reducer.

[0004] The present invention is achieved through the following technical solutions:

[0005] A linkage valve assembly for a pressure-reducing linkage pressure reducer comprises a rubber diaphragm, a valve seat, a return spring and a spherical valve. A center hole is opened in the center of the rubber diaphragm. The valve seat is sealably arranged through the center hole of the rubber diaphragm and is fixedly connected to the rubber diaphragm. A stepped hole with a diameter decreasing from bottom to top is provided inside the valve seat. The upper and lower ends of the stepped hole pass through the valve seat. The outer diameter of the spherical valve is larger than the diameter of the upper end of the stepped hole and smaller than the diameter of the lower end of the stepped hole. The spherical valve is located inside the lower end of the valve seat. The return spring is located inside the upper end of the valve seat. The upper end of the return spring is fixed to the inner wall of the valve seat, and the lower end is fixedly connected to the spherical valve. The spherical valve is separated from the valve seat under the thrust of the return spring.

[0006] A guide sleeve is fixed on the inner wall of the lower end of the valve seat, and the spherical valve is located in the guide sleeve.

[0007] The valve seat is connected to the rubber diaphragm by vulcanization.

[0008] A gasket is fixed on the upper side of the rubber diaphragm.

[0009] The advantages of the present invention are: the present invention opens and closes the valve seat by arranging a spherical valve and a return spring, has a simple structure, a reasonable design, stable working performance, is easy to operate, and saves manpower and material resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the present invention.

[0011] Figure 2 This is a schematic diagram of the application of the present invention on a pressure reducer. DETAILED DESCRIPTION

[0012] like Figure 1 As shown, a linkage valve assembly for a pressure-reducing linkage pressure reducer includes a rubber diaphragm 1, a valve seat 2, a return spring 3 and a spherical valve 4. A center hole is opened in the center of the rubber diaphragm 1, and the valve seat 2 is sealed and penetrates the center hole of the rubber diaphragm 1 and is fixedly connected to the rubber diaphragm 1. A stepped hole 5 with a diameter decreasing from bottom to top is provided inside the valve seat 2, and the upper and lower ends of the stepped hole 5 pass through the valve seat 2. The outer diameter of the spherical valve 4 is larger than the aperture of the upper end of the stepped hole 5 and smaller than the aperture of the lower end of the stepped hole 5. The spherical valve 4 is located inside the lower end of the valve seat 2, and the return spring 3 is located inside the upper end of the valve seat 2. The upper end of the return spring 3 is fixed to the inner wall of the valve seat 2, and the lower end is fixedly connected to the spherical valve 4. The spherical valve 4 is separated from the valve seat 2 under the thrust of the return spring 3.

[0013] A guide sleeve 6 is fixed to the inner wall of the lower end of the valve seat 2, and the spherical valve 4 is located in the guide sleeve 6 to prevent the spherical valve 4 from shaking when moving up and down.

[0014] The valve seat 2 is connected to the rubber diaphragm 1 by vulcanization.

[0015] A gasket 7 is fixed on the upper side of the rubber diaphragm 1 to prevent damage to the rubber diaphragm 1 and to increase the service life of the rubber diaphragm 1 .

[0016] like Figure 2 As shown, when the present invention is applied to a pressure-reducing linkage pressure reducer, the linkage valve assembly of the present invention is installed in a cavity of the pressure reducer, and the rubber diaphragm 1 is sealed in the cavity. The upper end drives the rubber diaphragm 1 to move up and down through the screw 8 and the pressure-regulating spring 9. A push rod 10 is also provided below the linkage valve assembly in the pressure reducer. When the screw 8 and the pressure-regulating spring 9 press down the rubber diaphragm 1, the push rod 10 pushes the spherical valve 4 upward to block the upper end of the stepped hole of the valve seat 2, and the valve seat 2 is closed; when the screw 8 is turned upward, the pressure-regulating spring 9 drives the rubber diaphragm 1 upward, the spherical valve 4 disengages from the push rod 10, and the spherical valve 4 is separated from the valve seat 2 under the thrust of the return spring 3, and the valve seat 2 is opened.

Claims

1. A linkage valve assembly for a pressure reducing linkage pressure reducer, characterized in that: The invention comprises a rubber diaphragm, a valve seat, a return spring and a spherical valve. A center hole is opened in the center of the rubber diaphragm. The valve seat is sealably penetrated through the center hole of the rubber diaphragm and is fixedly connected to the rubber diaphragm. A stepped hole with a diameter decreasing from bottom to top is provided inside the valve seat. The upper and lower ends of the stepped hole pass through the valve seat. The outer diameter of the spherical valve is larger than the diameter of the upper end of the stepped hole and smaller than the diameter of the lower end of the stepped hole. The spherical valve is located inside the lower end of the valve seat. The return spring is located inside the upper end of the valve seat. The upper end of the return spring is fixed to the inner wall of the valve seat, and the lower end is fixedly connected to the spherical valve. The spherical valve is separated from the valve seat under the thrust of the return spring. A guide sleeve is fixed on the inner wall of the lower end of the valve seat, and the spherical valve is located in the guide sleeve; The valve seat and the rubber diaphragm are connected by vulcanization; A gasket is fixed on the upper side of the rubber diaphragm; When the linkage valve assembly is used on a pressure-reducing linkage pressure reducer, the linkage valve assembly is installed in the cavity of the pressure reducer, and the rubber diaphragm is sealed in the cavity. The upper end drives the rubber diaphragm to move up and down through a screw and a pressure-adjusting spring. A push rod is provided below the linkage valve assembly in the pressure reducer. When the screw and the pressure-adjusting spring press down the rubber diaphragm, the push rod pushes the spherical valve upward to block the upper end of the stepped hole of the valve seat, and the valve seat is closed; when the screw is turned upward, the pressure-adjusting spring drives the rubber diaphragm upward, the spherical valve disengages from the push rod, and the spherical valve is separated from the valve seat under the thrust of the reset spring, and the valve seat is opened.

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