CN212959875U - Exhaust pressure reducing valve - Google Patents

Abstract

The utility model relates to a relevant technical field of pipeline accessory discloses an exhaust relief pressure valve, including valve body and valve gap, the both ends of valve body are entrance point and exit end respectively, and the valve gap setting sets up the valve disc in the valve gap in the valve body top, it is connected to the valve gap upper end to set up the valve rod on the valve disc, the valve disc seals the passageway of entrance point and exit end, set up the diaphragm on the valve disc, set up the spring between valve disc and the valve gap, the diaphragm forms a cavity with the valve gap the top of valve gap sets up discharge valve. The utility model discloses a discharge valve cavity air, the abundant water storage capacity of assurance valve epicoele to improve the stability of valve.

Description

Exhaust pressure reducing valve

Technical Field

The utility model relates to a relevant technical field of pipeline accessory especially relates to an exhaust relief pressure valve.

Background

The pressure reducing valve is a valve which reduces the inlet pressure to a certain required outlet pressure through regulation and leads the outlet pressure to be automatically kept stable by relying on the energy of the medium. From the viewpoint of hydrodynamics, the pressure reducing valve is a throttling element with variable local resistance, namely, the flow speed and the kinetic energy of fluid are changed by changing the throttling area to cause different pressure losses, thereby achieving the purpose of pressure reduction.

The existing pressure reducing valve is connected through a threaded plug, is not easy to disassemble and assemble, and has short service life and poor reliability.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the above problem, provide an exhaust pressure reducing valve, its discharge valve cavity air, the abundant water storage capacity of assurance valve epicoele to improve the stability of valve.

The utility model adopts the technical proposal that:

the utility model provides an exhaust relief pressure valve, characterized by includes valve body and valve gap, the both ends of valve body are entrance point and exit end respectively, and the valve gap setting sets up the valve disc in the valve body top in the valve gap, set up the valve rod on the valve disc and be connected to the valve gap upper end, the valve disc seals the passageway of entrance point and exit end, set up the diaphragm on the valve disc, set up the spring between valve disc and the valve gap, the diaphragm forms a cavity with the valve gap the top of valve gap sets up discharge valve.

Furthermore, a pilot valve is connected between the cavity and the outlet end through a pipeline.

Further, a ball valve is arranged on a front-end pipeline of the pilot valve.

Further, a needle valve is connected between the cavity and the inlet end through a pipeline.

The utility model has the advantages that:

(1) the exhaust valve can exhaust air in the upper cavity of the valve and ensure the abundant water storage amount in the upper cavity of the valve, thereby improving the stability of the valve;

(2) the product is stable and has long service life.

Drawings

Fig. 1 is a schematic structural sectional view of the present invention.

The reference numbers in the drawings are respectively:

1. a valve body; 2, valve cover;

3. an inlet end; 4, an outlet end;

5. a valve disc; 6, a valve rod;

7. a spring; 8, a cavity;

9. an exhaust valve; 10, a pilot valve;

11. a ball valve; a needle valve;

13. a membrane.

Detailed Description

The following describes in detail embodiments of the exhaust pressure reducing valve according to the present invention with reference to the accompanying drawings.

Referring to the attached drawing 1, the exhaust and pressure reducing valve comprises a valve body 1 and a valve cover 2, wherein an inlet end 3 and an outlet end 4 are respectively arranged at two ends of the valve body 1, the valve cover 2 is arranged above the valve body 1, a valve disc 5 is arranged in the valve cover 2, a valve rod 6 is arranged on the valve disc 5 and connected to the upper end of the valve cover 2, a channel between the inlet end 3 and the outlet end 4 is sealed by the valve disc 5, a diaphragm 13 is arranged on the valve disc 5, a spring 7 is arranged between the valve disc 5 and the valve cover 2, the diaphragm 13 forms the valve cover 2 into.

A pilot valve 10 is connected between the cavity 8 and the outlet end 4 by a pipe. A ball valve 11 is arranged on a front end pipeline of the pilot valve 10. A needle valve 12 is connected between the cavity 8 and the inlet end 3 via a line.

When the valve works, the upstream valve is opened, the pilot valve is preset to a required pressure value, the pilot valve is opened due to the pressure value of the inlet end 3 of the pressure reducing valve, the pressure of the cavity 8 on the membrane 13 of the valve cover 2 is reduced, and the membrane 13 moves upwards to drive the valve disc 5 to be opened. When the water is stopped, the water pressure of the outlet end 4 rises to close the pilot valve, the diaphragm 13 of the valve cover 2 pushes downwards to enable the valve disc 5 to close the water flow channel, the downstream pressure is stabilized at a set pressure value, and then the downward acting force of the diaphragm 13 enables the pressure reducing valve to close.

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

Claims (4)

1. A pressure relief valve, characterized by: including valve body and valve gap, the both ends of valve body are entrance point and exit end respectively, and the valve gap setting sets up in the valve body top, sets up the valve disc in the valve gap, set up the valve rod on the valve disc and be connected to the valve gap upper end, the valve disc seals the passageway of entrance point and exit end, set up the diaphragm on the valve disc, set up the spring between valve disc and the valve gap, the diaphragm forms a cavity with the valve gap the top of valve gap sets up discharge valve.

2. The pressure relief valve as set forth in claim 1, wherein: and a pilot valve is connected between the cavity and the outlet end through a pipeline.

3. The pressure relief valve of claim 2, wherein: and a ball valve is arranged on a front-end pipeline of the pilot valve.

4. A wastegate valve according to any one of claims 1 to 3, wherein: the needle valve is connected between the cavity and the inlet end through a pipeline.

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