CN2874279Y

CN2874279Y - Anti-flash back cutting gun

Info

Publication number: CN2874279Y
Application number: CN 200620095322
Authority: CN
Inventors: 郭守德
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-02-16
Filing date: 2006-02-16
Publication date: 2007-02-28
Anticipated expiration: 2016-02-16

Abstract

The utility model relates to a back fire prevention cutting gun comprising a cutting gun head 4, a mixed gas pipe 2, a pure oxygen jet pipe 3 and a cutting gun handle 1. A check valve 5 is arranged in between the mixed gas pipe and cutting gun handle or on the mixed gas pipe 2. Any position of acetylene inflow pipe is provided with check valve. The utility model has the advantages of preventing cutting gun back fire, preventing back fire accident, guaranteeing safe production and avoiding personal and property loss.

Description

The anti-backfire burning torch

Technical field

The utility model relates to the metalworking technology field, specifically a kind of anti-backfire burning torch.

Background technology

At present, known burning torch structure is to be made of rifle head, purity oxygen playpipe, mixture pipe etc., utilize oxy arc earlier the cut place of the steel and iron parts of preparing cutting to be burnt the red heat degree, be blown into the pure oxygen in high pressure air-flow then, make the part acutely burning in oxygen that is cut, be fused into liquid, and washed out, thereby reach the cutting purpose by air-flow.But weak point is when because of misoperation, and when acetylene pressure is regulated improper or spray nozzle clogging, thereby thereby the flame at nozzle place can enter shower nozzle sails against the current along the gaseous mixture pipeline and enter burning torch internal-combustion peril such as blast.

Summary of the invention

The purpose of this utility model provides a kind of tempering that prevents, can effectively avoid the tempering accident that the anti-backfire burning torch of the danger that brought takes place.

The utility model anti-backfire burning torch comprises: the burning torch head, and mixture pipe, the purity oxygen jet pipe, the burning torch handle is equipped with check-valves between mixture pipe and the burning torch handle, or on the mixture pipe check-valves is housed, or on the acetylene air inlet pipe optional position check-valves is housed.

Check-valves comprises: the check-valves shell, be equipped with in the check-valves shell with burning torch the conical head mixture pipe that links to each other or acetylene tracheae, piston, spring.Piston and conehead mixture pipe or acetylene tracheae connecting place can be adorned sealing ring.

Preventing that tempering is achieved in that on the mixture pipe of anti-backfire burning torch by original common burning torch adorns a check-valves, and the pressure that mist can overcome spring when ducted mist reaches certain pressure backs down piston, and forward blows out the rifle head.When the tempering accident takes place, thereby piston seals the tempering path with piston reset under the pressure of spring 11, thereby fundamentally prevents the tempering accident.

The advantage of the utility model anti-backfire burning torch is: can prevent the burning torch tempering, the danger of avoiding the tempering accident to bring can be protected production safety, and the person and property are not suffered a loss.

Description of drawings

Fig. 1 is an anti-backfire burning torch structural representation.

Sectional structural map when Fig. 2 opens for check-valves.

Sectional structural map when Fig. 3 is closure of check ring.

The specific embodiment

According to Fig. 1, Fig. 2, shown in Figure 3, burning torch head 4 and mixture pipe 2, purity oxygen jet pipe 3 links to each other, and mixture pipe and burning torch be between 1, on a check-valves 5 is housed, or a check-valves 5 is housed on the mixture pipe 2, or or the optional position of acetylene air inlet pipe load onto check-valves.

Check-valves 5 comprises: check-valves shell 11, be equipped with in the check-valves shell 11 with burning torch the 1 conical head mixture pipe 8 that links to each other, piston 9, spring 10.Piston 9 and conehead mixture pipe 8 connecting places can be adorned sealing ring.

Claims

1, a kind of anti-backfire burning torch comprises: burning torch head (4), mixture pipe (2), purity oxygen jet pipe (3), burning torch is (1), it is characterized in that: mixture pipe and burning torch are between (1) check-valves (5) being housed, or check-valves (5) is housed on the mixture pipe (2), check-valves is equipped with in the optional position of acetylene air inlet pipe.

2, anti-backfire burning torch according to claim 1, it is characterized in that: check-valves (5) comprising: check-valves shell (11), be equipped with the conical head mixture pipe (8) that (1) linked to each other with burning torch or acetylene gas, piston (9), spring (10) in the check-valves shell (11).

3, anti-backfire burning torch according to claim 1 is characterized in that: piston (9) and conehead mixture pipe (8) or acetylene tracheae connecting place, can adorn sealing ring.