CN210318561U

CN210318561U - Manual pressure relief assembly of industrial gas control valve

Info

Publication number: CN210318561U
Application number: CN201921273018.3U
Authority: CN
Inventors: 潘华敏; 梁先锋
Original assignee: Sichuan Xuanyuan Automatic Control Equipment Co Ltd
Current assignee: Sichuan Xuanyuan Automatic Control Equipment Co Ltd
Priority date: 2019-08-07
Filing date: 2019-08-07
Publication date: 2020-04-14
Anticipated expiration: 2029-08-07

Abstract

The utility model discloses a manual pressure release subassembly of industry gas control valve, including valve body, valve clack, valve rod, the valve clack is established at the valve rod lower extreme, the valve clack is with inside intake chamber and the exhaust chamber of dividing into of valve body, the valve rod is established on the valve body, the valve rod lower extreme is disappointing pipe, the diameter of disappointing pipe is less than the diameter of valve rod, be equipped with the passageway that loses heart No. one along disappointing pipe axis, radially be equipped with the passageway that loses heart No. two that communicates with the passageway that loses heart No. one along disappointing pipe, the passageway that loses heart No. one still communicates with intake chamber, be equipped with coaxial macropore and aperture on the valve clack, aperture and the cooperation of disappointing pipe, macroporous diameter is greater than the diameter of valve rod, macropore and exhaust chamber intercommunication, disappointing pipe and valve rod junction form No. one step, macropore and aperture junction form no. The utility model provides a use more convenient, the pressure release is easier, the security is good, can effectively balance the pressure differential in chamber of admitting air and the chamber of exhausting.

Description

Manual pressure relief assembly of industrial gas control valve

Technical Field

The utility model relates to a valve field especially relates to a manual pressure release subassembly of industry gas control valve.

Background

The electromagnetic valve is an industrial device controlled by electromagnetism, is mainly used for adjusting the direction, flow, speed and other parameters of a medium in an industrial control system, can be matched with different circuits to realize expected control, and can ensure the control precision and flexibility. At present, all install the solenoid valve on gas pipeline, gas furnace utensil and the gas heater, the solenoid valve that the manual work was played under the normal conditions closes the back under the state of ventilating, and atmospheric pressure can act on the valve clack, and the manpower will be very difficult to open the valve this moment, so need design a pressure release subassembly with the opening force that reduces the valve of balanced intake chamber and the pressure differential in exhaust chamber.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's not enough, provide a use more convenient, the pressure release is more easy, the security is good, can effectively balance the pressure differential of admitting air chamber and exhaust chamber stabilize manual pressure release subassembly.

The purpose of the utility model is realized through the following technical scheme:

manual pressure release subassembly of industry gas control valve, including the valve body, the valve clack, the valve rod, the valve clack is established at the valve rod lower extreme, the valve clack is with the inside intake chamber and the chamber of exhausting of divideing into of valve body, the valve rod is established on the valve body, the valve rod lower extreme is disappointing pipe, the diameter of disappointing pipe is less than the diameter of valve rod, be equipped with the passageway that loses heart No. one along disappointing pipe axis, radially be equipped with the passageway that loses heart No. two that communicates with the passageway that loses heart No. one along disappointing pipe, the passageway that loses heart No. one still communicates with the intake chamber, be equipped with coaxial macropore and aperture on the valve clack, aperture and the cooperation of disappointing pipe, macroporous diameter is greater than the diameter of valve rod, macropore and chamber intercommunication of exhausting, the pipe forms No. one step with the valve.

Preferably, the edge of the large hole is provided with an outward inclined conical part.

Preferably, the end part of the air release pipe is provided with a limiting part for preventing the valve rod from being separated from the valve clack, and when the limiting part is contacted with the bottom surface of the valve clack, the second air release channel is communicated with the large hole.

Preferably, the small hole is provided with a sealing ring.

The utility model has the advantages that:

(1) the utility model provides a manual pressure release subassembly sets up the passageway of disappointing No. one on the valve rod, No. two the passageway of disappointing, when the valve clack pressurized is difficult for lifting up, make admit air chamber and exhaust chamber through the passageway of disappointing No. one, No. two the passageway of disappointing, the macropore intercommunication through lifting up the valve rod, and then balanced admit air chamber and the pressure differential in exhaust chamber, reach the pressure release purpose, moreover, the steam generator is simple in structure, convenient operation, the pressure release is more easy, avoid the valve clack pressurized to lead to the fact danger more and more greatly, the.

(2) Through setting up a step and No. two steps to and spacing portion, prevent that valve rod and valve clack from breaking away from, spacing portion still increases gravity for the valve rod, when guaranteeing that the valve rod does not receive external force, and a step and No. two steps are laminated all the time, guarantee valve seal nature, and No. two lose heart passageway and macropore intercommunication cause gas leakage when preventing not needing the pressure release.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of a vent structure;

FIG. 3 is a schematic view of the valve flap structure;

FIG. 4 is a schematic view of the valve stem and the valve flap in a matched non-decompressed state;

FIG. 5 is a schematic view showing the state of pressure release by the valve rod and the valve flap;

in the figure, 1-valve body, 2-valve clack, 3-valve rod, 4-air inlet cavity, 5-air outlet cavity, 6-air outlet pipe, 7-first air outlet channel, 8-second air outlet channel, 9-big hole, 10-small hole, 11-first step, 12-second step, 13-conical part and 14-limiting part.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution:

manual pressure release assembly of industry gas control valve, including valve body 1, valve clack 2, valve rod 3, valve clack 2 is established at valve rod 3 lower extreme, valve clack 2 is intake chamber 4 and exhaust chamber 5 with valve body 1 is inside to be divided into, valve rod 3 is established on valve body 1, valve rod 3 lower extreme is disappointing pipe 6, the diameter of disappointing pipe 6 is less than the diameter of valve rod 3, be equipped with disappointing passageway 7 No. one along disappointing pipe 6 axis, radially be equipped with No. two disappointing passageways 8 with a disappointing passageway 7 intercommunication along disappointing pipe 6, a disappointing passageway 7 still communicates with intake chamber 4, be equipped with coaxial macropore 9 and aperture 10 on valve clack 2, aperture 10 and disappointing pipe 6 cooperation, the diameter of macropore 9 is greater than the diameter of valve rod 3, macropore 9 and exhaust chamber 5 intercommunication, disappointing pipe 6 and valve rod 3 junction form No. one step 11, macropore 9 and aperture 10 junction form No. two step 12, No. one, the second air leakage channel 8 is not communicated with the big hole 9.

Furthermore, the edge of the large hole 9 is provided with a conical part 13 which inclines outwards, the conical part 13 is more beneficial to gas circulation, and the pressure difference between the air inlet cavity and the air exhaust cavity is conveniently and quickly balanced.

Further, 6 tip of disappointing pipe be equipped with the spacing portion 14 that prevents valve rod 3 and valve clack 2 and break away from, when spacing portion 14 and the contact of valve clack 2 bottom surfaces were guaranteed to the length of spacing portion 14, No. two lose heart passageway 8 just communicate with macropore 9, spacing portion 14 still increases gravity for valve rod 3, when guaranteeing that valve rod 2 does not receive external force, step 11 and No. two step 12 laminate all the time, guarantee valve seal nature, No. two lose heart passageway 8 and macropore 9 intercommunication cause gas leakage when preventing not needing the pressure release.

Furthermore, the small hole 10 is provided with a sealing ring, so that the air tightness between the small hole 10 and the air leakage pipe 6 is improved, and the integral sealing performance of the valve is ensured.

The utility model discloses the theory of operation as follows: receive valve rod 3 self gravity, the gravity of valve clack 2 and compression spring's restoring force, valve clack 2 seals the valve, receive valve rod 3 self gravity, spacing portion 14 gravity, make step 11 laminate throughout with step 12, further make valve seal, when needing the pressure release, lift valve rod 3 upwards, make No. two lose heart passageway 8 and macropore 9 intercommunication, then admit air chamber 4 and exhaust chamber 5 through losing heart passageway 7 No. one, lose heart passageway 8 No. two, macropore 9 intercommunication, and then balanced the pressure differential of admitting air chamber and exhaust chamber, reach the pressure release purpose, make valve clack 2 no longer receive atmospheric pressure, continue to upwards lift valve rod 3 this moment, thereby valve clack 2 just is mentioned the convenient light valve of opening easily.

The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims

1. Manual pressure release subassembly of industry gas control valve, including valve body (1), valve clack (2), valve rod (3), establish valve rod (3) lower extreme in valve clack (2), valve clack (2) are with valve body (1) inside be divided into admit air chamber (4) and exhaust chamber (5), and establish on valve body (1) valve rod (3), its characterized in that: the lower end of the valve rod (3) is provided with an air leakage pipe (6), the diameter of the air leakage pipe (6) is smaller than that of the valve rod (3), a first air leakage channel (7) is arranged along the axis of the air leakage pipe (6), a second air leakage channel (8) communicated with the first air leakage channel (7) is radially arranged along the air leakage pipe (6), the first air leakage channel (7) is further communicated with the air inlet cavity (4), a valve clack (2) is provided with a coaxial large hole (9) and a small hole (10), the small hole (10) is matched with the air leakage pipe (6), the diameter of the large hole (9) is larger than that of the valve rod (3), the large hole (9) is communicated with the air outlet cavity (5), the joint of the air leakage pipe (6) and the valve rod (3) forms a first step (11), the joint of the large hole (9) and the small hole (10) forms a second step (12), the first step (11) is attached to the second step (12), and the second air leakage channel (8) is not communicated.

2. The industrial gas control valve manual pressure relief assembly of claim 1, wherein: the edge of the big hole (9) is provided with a conical part (13) which inclines outwards.

3. The industrial gas control valve manual pressure relief assembly of claim 1, wherein: the end part of the air release pipe (6) is provided with a limiting part (14) for preventing the valve rod (3) from being separated from the valve clack (2), and when the limiting part (14) is contacted with the bottom surface of the valve clack (2), the second air release channel (8) is communicated with the large hole (9).

4. The industrial gas control valve manual pressure relief assembly of claim 1, wherein: and a sealing ring is arranged on the small hole (10).