CN2160048Y

CN2160048Y - Non-return fast pipe joint for oxygen and acetylene

Info

Publication number: CN2160048Y
Application number: CN 93236929
Authority: CN
Inventors: 沈英才; 高济华; 谢晓新
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-05-19
Filing date: 1993-05-19
Publication date: 1994-03-30
Anticipated expiration: 2003-05-19

Abstract

The utility model relates to a nonreturn fast pipe joint for oxygen and acetylene, which is used for the pipe connection of gas cutting operation and gas welding operation for the oxygen and the acetylene. The utility model is mainly composed of an outer sleeve, a spring seat, a spring, and a plug core. The utility model is characterized in that a valve core is arranged in the plug core, and a sealing ring is arranged between the contact surfaces of the valve core and the plug core. The utility model has the advantages of simple structure, compact structure, backfire prevention, rapid assembly and disassembly and safety. Gas stream is stopped without leak, and the production efficiency is effectively raised.

Description

Non-return fast pipe joint for oxygen and acetylene

The pipeline that a kind of oxygen-acetylene non-return quick coupling is used for oxygen, autogenous cutting, gas welding operation connects.

Before the utility model was made, in prior art, quick coupling did not have the arrangement fireproof tempering device, during the gas welding operation, must add the tempering preventer in addition, so just can reach safety, reliable.But at present general back-fire arrangement majority is gas and flows out by micropore, but influences flow because of the obstruction of the impurity in gas micropore during by micropore when gas, even air-flow is obstructed, adds the attached device that helps, and causes making the cost of production height.

The purpose of this utility model is to overcome above-mentioned deficiency, thus provide a kind of simple in structure, can prevent tempering, fast mounting or dismounting, not leak by source of the gas, can enhance productivity, and can guarantee the oxygen-acetylene non-return quick coupling that air-flow is unimpeded.

The utility model mainly by overcoat (1), spring seat (3), spring (4), cut down core (5), plug core (6) is formed.Its solution is to be equipped with to cut down core (5), cut down between core (5) and plug core (6) surface of contact rubber seal is housed in plug core (6).

Description of drawings:

Fig. 1 is the utility model structural front view:

Embodiment during following the utility model is incited somebody to action in conjunction with the accompanying drawings is further described:

Overcoat (1) is enclosed within outside the plug core (6), cutting down core (5) is contained in the plug core (6), cutting down core (5) adopts copper material to make, cut down between core (5) and plug core (6) surface of contact rubber seal is housed, to cut down core (5) fixing by being contained in spring (4) in plug core (6) hole and spring seat (3), and seal ring (2) is pressed between overcoat (1) and the plug core (6), locking-type plug core (6), the left side is as connecing flexible pipe, the pagoda joint of then screwing on.Its plug insertion socket, gas flows into the lock pin hole from socket side and pushes plug open and cut down the core outflow, if make use produce tempering, the gas of burning is in the pipeline internal combustion of plug front, its pressure must surpass supply gas pressure, and plug cuts down core and is subjected to close automatically under spring and the gas pressure effect, and combustion gas can not be flowed out, burning is promptly extinguished, and has prevented tempering.Burning stops, and pressure reduces, and plug cuts down core and opens automatically, and gas continues to flow out, if quit work, to the pulling of plug side, the sleeve of socket is to moving to left with the gland of socket, and steel ball outwards moves, plug promptly separates with socket, and socket cuts down core and automatically resets, and air-flow ends, and guarantees that gas does not leak.

Compared with the prior art the utility model has the following advantages: 1, simple in structure, compact; 2, can prevent tempering, rapid-assembling/disassembling, cut-off air-flow do not leak; 3, safe and reliable, and can effectively enhance productivity.

Claims

1, a kind of oxygen-acetylene non-return quick coupling mainly is made up of overcoat (1), spring seat (3), spring (4), plug core (6), it is characterized in that being equipped with in plug core (6) cutting down core (5), cutting down between core (5) and plug core (6) surface of contact seal ring is housed.