CN212252601U

CN212252601U - Cutting torch front part with anti-tempering function

Info

Publication number: CN212252601U
Application number: CN202020328918.XU
Authority: CN
Inventors: 陈磊
Original assignee: Ningbo Hanlun Tools Co ltd
Current assignee: Ningbo Hanlun Tools Co ltd
Priority date: 2020-03-16
Filing date: 2020-03-16
Publication date: 2020-12-29
Anticipated expiration: 2030-03-16

Abstract

The utility model discloses a cutting torch front part with anti-backfire function, belonging to the technical field of cutting tools, comprising a cutting torch front part which comprises a combustion-supporting oxygen port arranged on the side edge, wherein the combustion-supporting oxygen port is divided into a mixing area, a limiting area and a connecting area along with the increase of the aperture from inside to outside; the hybrid tube divide into mixing end and link, and the junction of the two passes through the chamfer transition, and mixed end head portion inserts combustion-supporting oxygen mouth, and mixing end diameter and spacing district looks adaptation, and the hybrid tube still is equipped with mixed through-hole, is provided with the round on the chamfer face of mixing end equidistant. The utility model discloses a cutting torch front portion is equipped with the hybrid tube, is equipped with round mixing through-hole on the chamfer face of mixing end equidistant, and the hybrid tube communicates with each other with the acetylene pipe, and at the during operation, the acetylene gets into the acetylene pipe and mixes with combustion-supporting oxygen in entering into the mixing end of hybrid tube through mixing through-hole for the mixing of gas only goes on in the cutting torch is anterior, even the operator misuse, the hybrid tube can decompose mars, plays the effect of anti tempering.

Description

Cutting torch front part with anti-tempering function

Technical Field

The utility model belongs to the technical field of cutting means, concretely relates to cutting torch front portion that possesses anti tempering function.

Background

The cutting torch is a common metal cutting tool, the current injection type welding and cutting torch mostly consists of a cutting torch front part, a cutting torch middle part, a cutting torch rear part and related components, the parts are welded through a gas pipe, and the cutting torch is free of an anti-backfire device, and the structure of long-distance transmission after oxygen and fuel gas are mixed is adopted generally, after the fire is shut off after the cutting is completed, because of no protective measures, sparks are easily caused to enter an oxygen bottle or an acetylene bottle through a pipeline, so that the gas bottle is exploded, further, personnel injury is caused, and the defects of easy backfire and low safety exist.

In summary, in order to overcome the structural deficiencies of the existing cutting torch, it is necessary to design a cutting torch front part with an anti-backfire function.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problems in the prior art and providing a cutting torch with gas mixing and anti-backfire functions at the front part of the cutting torch.

The purpose of the utility model can be realized by the following technical proposal:

a cutting torch front part with anti-backfire function comprises,

the cutting torch comprises a cutting torch front part and a cutting torch front part, wherein the cutting torch front part comprises a combustion-supporting oxygen port arranged on the side edge, and the combustion-supporting oxygen port is divided into a mixing area, a limiting area and a connecting area from inside to outside along with the increase of the aperture;

the mixing pipe is divided into a mixing end and a connecting end, the connecting position of the mixing end and the connecting end is in chamfer transition, the head part of the mixing end is inserted into the combustion-supporting oxygen port, the diameter of the mixing end is matched with that of the limiting area, the mixing pipe is further provided with mixing through holes, and circles are arranged on the chamfer surface of the mixing end at equal intervals.

As a further improvement, the mixing tube is internally provided with a small hole for the passage of combustion-supporting oxygen, and the mixing tube is also connected with a combustion-supporting oxygen tube for transmitting combustion-supporting oxygen.

As a further improvement of the utility model, the front part of the cutting torch also comprises a cutting oxygen port arranged above the combustion-supporting oxygen port, and the cutting oxygen port is connected with a cutting oxygen pipe for transmitting cutting oxygen; and the acetylene port is arranged below the combustion-supporting oxygen port and is connected with an acetylene pipe for conveying acetylene.

As a further improvement of the utility model, the acetylene port and the combustion-supporting oxygen port are communicated with each other and arranged, and the connecting port of the acetylene port is close to the mixing through hole.

As a further improvement of the utility model, the cutting torch front part also comprises a nozzle opening arranged at the bottom and vertically arranged, and the combustion-supporting oxygen opening is communicated with the cutting oxygen opening respectively through the nozzle opening.

As a further improvement of the utility model, the mixing pipe can be connected with the combustion-supporting oxygen port through a screw joint or a hard matching mode.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model discloses a cutting torch front portion is equipped with the hybrid tube, equidistant round mixing through-hole that is provided with on the chamfer face of hybrid tube mixing end, and the hybrid tube communicates with each other with the acetylene pipe, at the during operation, the acetylene gets into the acetylene pipe and enters into the hybrid tube's mixing end through mixing through-hole in, mix with the combustion-supporting oxygen in the hybrid end, make in the whole course of the work, gaseous mixing is only gone on in the hybrid tube's mixing zone of hybrid tube and combustion-supporting oxygen mouth, even the operator misuse causes the tempering, this hybrid tube can decompose mars, play the effect of anti tempering.

2. The utility model discloses a reservation has the mixing area between mixing tube and combustion-supporting oxygen mouth for the acetylene and the combustion-supporting oxygen that get into can further obtain abundant mixture in this space, and then make the flame that erupts more stable.

3. The space where the mixing through hole is located only has the air inlet of the mixing through hole, and other joints are in a completely sealed state, so that when combustion-supporting oxygen passes through the small hole in the mixing pipe, the gas is extruded, and due to the pressure difference, the flow conveying speed of the air flow can be further increased when the combustion-supporting oxygen passes through the small hole; in addition, because there is pressure difference, the air flow conveying speed can be promoted when acetylene passes through the connector, when entering into the mixing through hole through the connector, the air flow conveying speed can be further promoted again, namely before acetylene is mixed with combustion-supporting oxygen, the air flow conveying speed of acetylene is promoted to obtain the secondary promotion through the secondary extrusion, and then the mixing with combustion-supporting oxygen is more thorough.

Drawings

FIG. 1 is a schematic structural diagram of a preferred embodiment of the present invention;

FIG. 2 is a cross-sectional view of the front of the torch of the embodiment of FIG. 1;

fig. 3 is a schematic structural diagram of a mixing tube according to a preferred embodiment of the present invention.

In the figure, 100, the torch front; 110. a combustion-supporting oxygen port; 111. a mixing zone; 112. a limiting region; 113. a connecting region; 120. a mixing tube; 121. a mixing end; 122. a connecting end; 123. a mixing through hole; 124. a combustion-supporting oxygen pipe; 130. cutting an oxygen port; 131. cutting an oxygen tube; 140. an acetylene port; 141. an acetylene tube; 142. a connecting port; 150. a nozzle opening;

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1-3, a torch front having a flashback resistance function includes,

the cutting torch comprises a cutting torch front part 100, wherein the cutting torch front part 100 comprises a combustion-supporting oxygen port 110 arranged on the side edge, and the combustion-supporting oxygen port 110 is divided into a mixing area 111, a limiting area 112 and a connecting area 113 from inside to outside along with the increase of the aperture;

the mixing tube 120 is divided into a mixing end 121 and a connecting end 122, the joint of the mixing end 121 and the connecting end 122 is in chamfer transition, the head of the mixing end 121 is inserted into the combustion-supporting oxygen port 110, the diameter of the mixing end 121 is matched with the limiting area 112, the mixing tube 120 is further provided with a mixing through hole 123, a circle of mixing through holes is arranged on the chamfer surface of the mixing end 121 at equal intervals, and the connecting end 122 of the mixing tube 120 is detachably connected with the connecting area 113 of the cutting torch front part 100.

In this embodiment, when the mixing tube 120 is inserted into the combustion-supporting oxygen port 110, because the size of the mixing end 121 is matched with the diameter of the limiting region 112, the mixing tube 120 cannot be inserted into the mixing region 111, and the outer wall of the mixing tube 120 is tightly attached to the inner wall of the limiting region 112, and meanwhile, the connecting end 122 is connected with the connecting region 113 in a seamless sealing manner, so that the mixing through hole 123 is located in a space, only the air inlet of the mixing through hole 123 exists, and the other connecting positions are in a completely sealed state.

In actual work, acetylene enters the mixing end 121 from the mixing through hole 123 to be mixed with combustion-supporting oxygen, and meanwhile, the arrangement of the mixing area 111 not only enables the acetylene and the combustion-supporting oxygen to be further fully mixed, but also can further improve the air flow velocity of mixed gas, improve the stability of flame sprayed after mixing, and increase the reliability of work.

Meanwhile, due to the arrangement of the mixing pipe 120, in the whole working process, the gas mixing is only carried out at the mixing end 121 of the mixing pipe 120 and the mixing area 111 of the combustion-supporting oxygen port 110, and even if the operator causes backfire due to improper use, the mixing pipe 120 can decompose sparks, so that the backfire resisting effect is achieved.

Preferably, the mixing tube 120 is provided with a small hole for the passage of combustion-supporting oxygen inside, and is further connected with a combustion-supporting oxygen tube 124 for transmitting combustion-supporting oxygen, in actual operation, combustion-supporting oxygen enters along the combustion-supporting oxygen tube 124 and passes through the mixing tube 120, and when the combustion-supporting oxygen passes through the small hole inside the mixing tube 120, gas is extruded, and due to pressure difference, the flow delivery speed of the gas can be further increased when the combustion-supporting oxygen passes through the small hole.

Preferably, the torch front 100 further comprises a cutting oxygen port 130 opened above the combustion-supporting oxygen port 110, the cutting oxygen port 130 being connected with a cutting oxygen tube 131 for transmitting cutting oxygen; and an acetylene port 140 opened below the combustion-supporting oxygen port 110, the acetylene port 140 being connected to an acetylene pipe 141 for transporting acetylene.

It is further preferable that the acetylene port 140 and the combustion-supporting oxygen port 110 are communicated with each other, and a connection port 142 thereof is close to the mixing through hole 123, that is, acetylene enters the acetylene port 140 from the acetylene pipe 141, enters the mixing end 121 of the mixing pipe 120 through the connection port 142 and the mixing through hole 123, and is mixed with the combustion-supporting oxygen. At this moment, because there is the pressure differential, the air current transport speed can be promoted to acetylene when passing through connector 142, when entering into mixing through-hole 123 through connector 142, air current transport speed will further be promoted again, and acetylene is before mixing with combustion-supporting oxygen, through the secondary extrusion, makes the air current transport speed of acetylene obtain the secondary promotion, and then makes and mixes more thoroughly with combustion-supporting oxygen.

Preferably, the torch front part 100 further comprises a nozzle opening 150 installed at the bottom and vertically arranged, and the combustion supporting oxygen opening 110 and the cutting oxygen opening 130 are respectively communicated with the nozzle opening 150, i.e., the mixed gas enters the nozzle opening 150 from the combustion supporting oxygen opening 110, and the cutting oxygen enters the nozzle opening 150 from the cutting oxygen opening 130 alone.

Preferably, in order to make the mixing tube 120 more adaptable, the mixing tube 120 may be connected with the combustion-supporting oxygen port 110 by means of screw or hard fitting.

The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the technical means, but also comprises the technical scheme formed by the arbitrary combination of the technical characteristics. The above is a detailed implementation manner of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.

Claims

1. A cutting torch front part with a tempering resistance function is characterized by comprising,

the hybrid tube, the hybrid tube divide into mixed end and link, and the junction of the two passes through the chamfer transition, mixed end portion inserts the combustion-supporting oxygen mouth, just mixed end diameter with spacing district looks adaptation, the hybrid tube still is equipped with mixed through-hole, and it is in the equal interval is provided with the round on the chamfer face of mixed end, the link with the connection region can be dismantled and be connected.

2. The cutting torch front part with the anti-backfire function according to claim 1, wherein the mixing tube is internally provided with small holes for combustion-supporting oxygen to pass through, and the mixing tube is further connected with a combustion-supporting oxygen tube for transmitting the combustion-supporting oxygen.

3. The cutting torch front part with the tempering resistance function according to claim 1, wherein the cutting torch front part further comprises a cutting oxygen port opened above the combustion-supporting oxygen port, and the cutting oxygen port is connected with a cutting oxygen pipe for transmitting cutting oxygen; and the acetylene port is arranged below the combustion-supporting oxygen port and is connected with an acetylene pipe for conveying acetylene.

4. The front part of the cutting torch with the function of resisting the backfire as claimed in claim 3, wherein the acetylene port and the combustion-supporting oxygen port are communicated with each other, and a connecting port of the acetylene port and the combustion-supporting oxygen port is close to the mixing through hole.

5. The cutting torch front part with the tempering resistance function according to claim 3, wherein the cutting torch front part further comprises a nozzle opening which is installed at the bottom and is vertically arranged, and the combustion-supporting oxygen opening and the cutting oxygen opening are respectively communicated with the nozzle opening.

6. The front part of the cutting torch with the tempering resistance function as claimed in claim 1, wherein the mixing pipe can be connected with the combustion-supporting oxygen port through a screw connection or a hard fit manner.