CN102011879A

CN102011879A - Oxygen valve

Info

Publication number: CN102011879A
Application number: CN 201010549391
Authority: CN
Inventors: 李彦卿; 雷晓峰; 陈青山
Original assignee: CAMA (LUOYANG) GAS SUPPLY Co Ltd
Current assignee: CAMA (LUOYANG) GAS SUPPLY Co Ltd
Priority date: 2010-11-18
Filing date: 2010-11-18
Publication date: 2011-04-13
Anticipated expiration: 2030-11-18
Also published as: CN102011879B

Abstract

The invention relates to an oxygen valve. The oxygen valve comprises a three-way valve body, wherein one end of the valve body is communicated with an oxygen cylinder end of an oxygen cylinder, another end of the valve body is communicated with an inflation of an inflation port and the last end is communicated with a deflation end of a deflation port; the three ends are respectively communicated with an oxygen cylinder pipeline, an inflation pipeline and a deflation pipeline correspondingly; the pipelines are communicated with each other; a one-way valve through which gas can only flow from a gas inlet to a gas outlet of each pipeline is respectively arranged in the inflation pipeline and the deflation pipeline; each one-way valve comprises a valve core and a valve seat, wherein the valve core is in clearance fit and sliding assembly along the extension direction of each pipeline in the pipeline; the valve seat is fixed in the pipeline; and a spring used for making the valve core press against the valve seat is arranged between one end, far away from the valve seat, of the valve core and the pipeline where the valve core is positioned. The oxygen valve has a sealing effect, is easy to assemble and convenient to operate, and contributes to working pressure and flow.

Description

A kind of oxygen valve

Technical field

The present invention relates to the gas valve field, particularly a kind of oxygen valve.

Background technique

The oxygen valve of prior art is simple in structure, charges and discharge the shared valve port of gas, during use, must change corresponding tracheae and the equipment of charging and discharging according to charging and discharging gas, and assembling is complicated, and it is very inconvenient to use; And this mode seals not goodly, causes working pressure lower, and flow is lower, is difficult to be applied to the occasion of high pressure, high flow capacity.

Summary of the invention

The purpose of this invention is to provide a kind of oxygen valve, complicated in order to the oxygen valve assembling that solves prior art, unhandy problem.

For achieving the above object, the solution of the present invention is: comprise three way valve, valve body one end is the gas cylinder end that is used to be communicated with oxygen cylinder, the other end is the inflation end that is used to be communicated with inflation inlet, last end is the venting end that is used to be communicated with air vent, the corresponding respectively gas cylinder pipeline that is communicated with of three ends, loading line, bleed line, each pipeline is interconnected, in loading line and bleed line, be equipped with and make the check valve that gas can only be from place pipeline suction port to the air outlet one-way flow, described check valve is included in the pipeline of place along pipeline bearing of trend Spielpassung, the spool of slidable fit and the valve seat that is fixed in the pipeline of place, be provided with the vent that communicates with the place pipeline in the valve seat, spool all has the Thrust Faces that mutual thrust cooperates with valve seat, the air outlet of described vent is located on the Thrust Faces of valve seat, also be provided with the seal ring that is used for sealing gas around the air outlet of described vent, spool is used to make spool to hold out against the spring of valve seat away from being top-loaded with between end of valve seat and the place pipeline.

Oxygen valve of the present invention adopts three-port structure and two check valve structures, good sealing effect, and oxygen cylinder gas is difficult for leaking, and inflation or venting have special interface, not only assemble simply, easy to operate, also help to improve working pressure and flow.

Be provided with filter screen between the valve seat of described check valve and the place pipeline suction port.

Description of drawings

Fig. 1 is a structural drawing of the present invention.

Embodiment

The present invention will be further described in detail below in conjunction with accompanying drawing.

Oxygen valve as shown in Figure 1, comprise a three way valve, valve body is made of vent connection 1, the gas-charging connection 11 of T-valve piece 4 with two ends, the left and right sides, joint is connected with valve piece 4 internal whorls, and communicates with pipeline in the valve piece 4, and vent connection 1 is communicated with bleed line, gas-charging connection 11 is communicated with loading line, valve piece 4 lower ends are communicated with oxygen cylinder, are provided with check valve in bleed line and the loading line, and check valve only can make gas circulate to the air outlet from place pipeline suction port; As shown in the figure, the check valve of bleed line is included in the pipeline of place along pipeline bearing of trend Spielpassung, the spool 3 of slidable fit, a valve seat 5 that is screwed onto on valve piece 4 inwalls is adorned on spool 3 right-hand members top, valve seat 5 inner vent holes are communicated with the place pipeline, spool all has the Thrust Faces that mutual thrust cooperates with valve seat, the air outlet of described vent is located on the Thrust Faces of valve seat 5, and also be arranged with the seal ring 12 that is used for sealing gas on the air outlet of vent, be top-loaded with between the confined planes of spool 3 left ends and vent connection 1 and be used to make spool 3 to hold out against the spring 13 of valve seat 5.Spool 3 inside also are provided with the axial and radial line of circulated gases.

The inflation check valve is identical with venting check valve structure, and difference only is that its valve seat is screwed onto in gas-charging connection 11 inwalls, and its spring left end top is located on the confined planes of valve piece 4.In addition, the valve seat 5 of venting check valve is equipped with filter screen 7 with the valve seat right side of inflation check valve.

Check valve principle following (the venting check valve is identical with inflation check valve principle, is example with the venting check valve): under the nature, spring 13 holds out against spool 3, makes spool 3 and valve seat 5 sealings; When having pressurized gas to pour, pressurized gas enter vent in the valve seat 5 from filter screen 7, bump spool 3, pressure spring 13, spool 3 is separated with valve seat 5, pressurized gas just by around the spool 3, inner gas pipeline is communicated with the spool both sides, air pressure become greater to a certain degree up to the spool left side, spring 13 holds out against once more, and valve is sealing once more.

As shown in Figure 1, during use, inflation stop valve and venting stop valve need be set respectively on gas-charging connection 11 and vent connection 1, gas-charging connection 11 connects the external high pressure source of the gas by the inflation stop valve, open the inflation stop valve, close the venting stop valve, pressurized gas are washed the inflation check valve open, enter oxygen cylinder, realize inflation; If remove outside loading line this moment, the unidirectional conducting effect meeting of inflation valve stops gas leakage; When needs are used gas, open the venting stop valve, the oxygen in the oxygen cylinder is washed the venting check valve open and is outputed to exterior line.

Claims

1. oxygen valve, it is characterized in that, comprise three way valve, valve body one end is the gas cylinder end that is used to be communicated with oxygen cylinder, the other end is the inflation end that is used to be communicated with inflation inlet, last end is the venting end that is used to be communicated with air vent, the corresponding respectively gas cylinder pipeline that is communicated with of three ends, loading line, bleed line, each pipeline is interconnected, in loading line and bleed line, be equipped with and make the check valve that gas can only be from place pipeline suction port to the air outlet one-way flow, described check valve is included in the pipeline of place along pipeline bearing of trend Spielpassung, the spool of slidable fit and the valve seat that is fixed in the pipeline of place, be provided with the vent that communicates with the place pipeline in the valve seat, spool all has the Thrust Faces that mutual thrust cooperates with valve seat, the air outlet of described vent is located on the Thrust Faces of valve seat, also be provided with the seal ring that is used for sealing gas around the air outlet of described vent, spool is used to make spool to hold out against the spring of valve seat away from being top-loaded with between end of valve seat and the place pipeline.

2. a kind of oxygen valve according to claim 1 is characterized in that, is provided with filter screen between the valve seat of described check valve and the place pipeline suction port.