CN101337107B

CN101337107B - Low pressure gas three-way push valve

Info

Publication number: CN101337107B
Application number: CN200710016695A
Authority: CN
Inventors: 姚念民; 袁同禄
Original assignee: Zibo Qianyan Medical Instruments Co Ltd
Current assignee: Zibo Qianyan Medical Instruments Co Ltd
Priority date: 2007-07-03
Filing date: 2007-07-03
Publication date: 2010-05-19
Anticipated expiration: 2027-07-03
Also published as: CN101337107A

Abstract

The invention provides a three-way pressing valve of a low pressure gas, and belongs to the field of medical appliance fittings. The pressing valve comprises a valve body, an inlet, an outlet, and an end cover. The pressing valve is characterized in that the inlet (10) is arranged on one side of the valve body (1), the outlet (12) is arranged at front of the valve body (1), a lifting rod (6) is arranged above the valve body (1) as a pressing outlet (7) and inside the center hole of the end cover (5), the seal ring (4) is mounted below the lifting rod (6), and a pressure spring (2) is mounted at the bottom end of the end cover (5) and outside the lifting rod (6). The three-way pressing valve of the low pressure gas has the advantages of simple operation and application, no resistance in the normally-opened state, non-leakage in closed state, and no requirements for external power supply.

Description

Low pressure gas three-way push valve

Technical field

The present invention relates to a kind of low pressure gas three-way push valve, belong to the fitting of medical apparatus field.

Background technology

In the middle of practical application, need gas is carried out sampling operation, old-fashioned sampling mode is to connect a sample tap at pipeline mostly, a controlled valve or electromagnetic valve are adorned in the below, during sampling sampling container is connected on the sample tap, open controlled valve then or electromagnetic valve is taken a sample, sampling finishes and removes to close controlled valve or electromagnetic valve again.This kind mode has inconvenience, if frequently, in short-term, when taking a sample fast often people do not operate in addition someone help controlled valve or operation electromagnetic valve.If the aseptic condition sampling time goes to open the chance that the operation of controlled valve or electromagnetic valve has pollution.Controlled valve is to having long distance between the sample tap in addition, and remaining gas therebetween can pollute.Need a kind of for inconvenience that exists and defective by pushing the sampling of connection pipeline in short-term and will closing its path, port closing is connected and pushed to the finish pipeline that automatically resets after stopping to push of sampling, this valve does not use power supply as driving power, and these characteristics are particularly important in the middle of some extraordinary environment for use.

Summary of the invention

The technical problem to be solved in the present invention is, overcomes the problem that prior art exists, and a kind of low pressure gas three-way push valve is provided.

The technical solution adopted for the present invention to solve the technical problems is: this low pressure gas three-way push valve, comprise valve body, import, outlet, end cap, it is characterized in that: import is arranged on valve body one side, outlet is arranged on valve body the place ahead, motion bar is arranged on the top of valve body as pushing outlet, and motion bar is installed in the end cap central bore, and sealing ring is installed in the below of motion bar, stage clip is installed in the below, bottom of end cap, and motion bar, stage clip, glue emit and is installed in end cap and the valve pocket.

Described outlet diameter is less than the diameter of the valve pocket of valve inner, and the lower end of valve pocket links to each other with outlet;

End cap and valve body pass through screw attachment.

Described motion bar is made up of the thin axle in upper end, the thick axle in lower end, middle part discoid body three parts as pushing outlet, thin axle center, motion bar upper end has a pass passage to the discoid body upper surface of motion bar to form blind hole, position, discoid body upper surface tangent plane has an aperture to communicate with the pass passage, on aperture, there is a ring shaped slot to be embedded with sealing ring below the motion bar, described compression spring sleeve is outside the thick axle in lower end, the upper end withstands on the discoid body lower surface, the discoid body upper surface contacts with the end cap bottom, and end cap central bore packs into the thin axle in upper end of motion bar and fixes by screw with valve body.

Operation principle

Valve inner has one can the active motion bar of axis, and this assembly also is the outlet of pushing of threeway.The normality lower inlet end and the port of export are often opened, and motion bar is pushed port closing, and Chang Kaiduan closes and pushes outlet and connect after pressing motion bar.Pushing the bar of stopping action automatically resets.

Compared with prior art, the beneficial effect that the present invention had is: easy to use, only need a little firmly motion bar is pressed into the end can take a sample, and simple to operate than old-fashioned sampling mode, people's operation is also safe and reliable.Itself has switching function low pressure gas three-way push valve, and its switch position has only micro-survival gas at valve inner apart from the sample tap spacing is very short, significantly reduces than old-fashioned sampling mode and pollutes or ignore.It or not electromagnetic type structure dispense with outer connecting power.Prevent that inflammable and explosive accident from taking place, these characteristics are particularly important in the middle of some extraordinary environment for use.

Description of drawings

Fig. 1 is that the master of the embodiment of the invention looks to cut open and shows sketch map.It is the most preferred embodiment of invention.Wherein: 1 valve body, 2 stage clips, 3 screws, 4 sealing rings, 5 end caps, 6 motion bars 7 are pushed outlet 8 apertures 9 valve pockets 10 imports 11 glue and are emitted 12 outlets.

The specific embodiment

With reference to accompanying drawing 1

Valve body 1 an outside side is provided with

import

10,12 two interface positions of outlet, and there is the silk hole site that is connected with end cap 5 valve body 1 upper end.There is the valve pocket 9 that holds assembly and pipeline gas valve body 1 inside.End cap 5 has the effect that connects valve body 1 and standing valve itself, and intermediary valve pocket 9 passages still are the operation passage of motion bar 6.All spare and accessory parts all are by the non-toxic anticorrosion material manufacture.

Motion bar 6 is made up of the thin axle in upper end, the thick axle in lower end, middle part discoid body three parts as pushing outlet 7, thin axle center, motion bar 6 upper ends has a pass passage to the discoid body upper surface of motion bar 6 to form blind hole, position, discoid body upper surface tangent plane has an aperture 8 to communicate with the pass passage, on hole 8, there is a ring shaped slot to be embedded with sealing ring 4 on the motion bar 6, stage clip 2 is enclosed within outside the thick bar in lower end, the upper end withstands on the discoid body lower surface, the discoid body upper surface contacts with end cap 5 bottoms, and the thin rod part that end cap 5 intermediary borehole jacks advance motion bar 6 divides with valve body 1 fixing by screw 3.

Stage clip 2 is used to support motion bar 6, is in closed condition under the static state.Gas enters from import 10 ports of valve body 1, from valve body 1 outlet 12 outputs.

Pushing outlet 7 is gas channels that the gas of valve pocket 9 passed through after motion bar 6 was pressed.

Sealing ring 4 is installed in thin axle below, motion bar 6 upper ends, is used to prevent that gas is from the gap effusion of motion bar 6 with end cap 5 inner chambers.

Glue emits the 11 interior hole sites that are pressed in valve pocket 9 outlet 12, and main effect is that motion bar 6 is pushed and just in time is pressed in glue and emits 11 upper port, can guarantee to seal the port of export.

Screw 3 is used to be connected and fixed valve body 1 and end cap 5.

Valve pocket 9 is to hold motion bar 6, stage clip 2, glue to emit 10 and the space of gas.

Static lower inlet 10 is normally opens with outlet 12, because the active force of stage clip 2 is sealing state, the pass passage of motion bar 6 and lower end aperture 8 thereof are in the also sealed closed condition that is of intracavity in the end cap 5 to discoid body upper end, motion bar 6 middle part with end cap 5 lower ends.

Be after pressing motion bar 6 under the current intelligence, motion bar 6 presses down stage clip 2 is moved downwards, the lower surface of motion bar 6 is pressed in outlet 12 ends and closes and often open the road, aperture 8 positions, motion bar 6 pass passage lower end are displaced downwardly to valve pocket 9 and connect with pipeline, and gas is pushed outlet 7 outputs by motion bar 6 inner passages through motion bar 6 upper ends.

Finishing to push the stage clip 2 that is equipped with rear valve body 1 inside resets motion bar 6 resetted and pushes outlet 7 and close the Chang Kaiduan connection.

Pushing the bar 6 of stopping action automatically resets.

It is not electromagnetic type structure dispense with outer connecting power that this low-pressure gas is pushed three-way valve.Prevent that inflammable and explosive accident from taking place.

Claims

1. low pressure gas three-way push valve, comprise valve body, import, outlet, end cap, it is characterized in that: import (10) is arranged on valve body (1) one side, outlet (12) is arranged on valve body (1) the place ahead, motion bar (6) is arranged on the top of valve body (1) as pushing outlet (7), motion bar (6) is installed in end cap (5) centre bore, and stage clip (2) is installed in outside the bottom underside bar (6) of end cap (5);

Described outlet (12) diameter is less than the diameter of the inner valve pocket (9) of valve body (1), and the lower end of valve pocket (9) links to each other with outlet (12);

Described motion bar (6) is as pushing outlet (7) by the thin axle in upper end, the thick axle in lower end, middle part discoid body three parts are formed, thin axle center, motion bar (6) upper end has a pass passage to the discoid body upper surface of motion bar (6) to form blind hole, position, discoid body upper surface tangent plane has an aperture (8) to communicate with the pass passage, the below of the thin axle in motion bar (6) upper end has a ring shaped slot to be embedded with sealing ring (4) on aperture (8), described stage clip (2) is enclosed within outside the thick axle in lower end, described stage clip (2) upper end withstands on the discoid body lower surface, the discoid body upper surface contacts with end cap (5) bottom, and end cap (5) centre bore packs into the thin axle in upper end of motion bar (6) and fixes by screw (3) with valve body (1).