CN210107394U

CN210107394U - Cutting torch

Info

Publication number: CN210107394U
Application number: CN201920602521.2U
Authority: CN
Inventors: 李清晖
Original assignee: NINGBO MASTER WELD-CUT INDUSTRY Co Ltd
Current assignee: NINGBO MASTER WELD-CUT INDUSTRY Co Ltd
Priority date: 2019-04-29
Filing date: 2019-04-29
Publication date: 2020-02-21
Anticipated expiration: 2029-04-29
Also published as: CN211693640U

Abstract

The utility model discloses a cutting torch, including nozzle, cutting torch barrel, mixed injection pipe, handle and gas pipeline, cutting torch barrel and mixed injection pipe one end are connected with the nozzle, and the other end then is connected with handle head, gas pipeline sets up at the handle afterbody, is located all be equipped with the needle axle subassembly of avoiding the tempering between cutting torch barrel, mixed injection pipe and gas pipeline three and the handle, needle axle subassembly includes needle axle disk seat, needle axle, spring and needle axle valve, needle axle disk seat, spring and needle axle valve all set up in the needle axle, wherein, the needle axle valve passes through the spring housing and establishes on the needle axle disk seat, and its setting through the needle axle subassembly can avoid the cutting torch generally to accomplish the shut off fire after, thereby the mars leads to this gas bottle explosion situation to appear in entering into oxygen bottle or acetylene bottle through the pipeline and takes place.

Description

Cutting torch

Technical Field

The invention relates to a cutting torch in the technical field of cutting tools.

Background

Cutting torches are common metal cutting tools. Generally, this cutting torch includes the main part, this main part lower part is equipped with the through-hole that link up from beginning to end, the inside front side intercommunication of this through-hole has the trachea, the rear side intercommunication has the gas pipe, the spiro union has the injection pipe in the anterior opening of this through-hole, the rear portion opening part is equipped with the regulation needle, and be located in this through-hole and be equipped with the nozzle between this injection pipe and this regulation needle, the rear portion of this injection pipe is equipped with cylindrical jack, the front portion of this nozzle extends in this jack, and simultaneously, the front side upper portion of this main part is equipped with the governing pipe with this tracheal lateral wall intercommunication, the front end of this governing pipe and this injection pipe intercommunication are joined the back and are connected with the welding and cut and chew, and be equipped with an governing valve on the upper portion of this main part and the lateral wall respectively, thereby these 2 governing valves match respectively in this trachea and.

The existing cutting torch is generally used for cutting off fire, and because no protective measures are taken, sparks can easily enter an oxygen cylinder or an acetylene cylinder through a pipeline, so that the gas cylinder is exploded, and further personnel are injured.

Disclosure of Invention

Technical problem to be solved

The technical problem to be solved by the invention is to provide a cutting torch which can prevent sparks from entering an oxygen cylinder or an acetylene cylinder through a pipeline to cause the explosion of the gas cylinder after the cutting torch is normally cut off through the arrangement of a needle shaft component.

(II) technical scheme

In order to solve the technical problem, the invention provides a cutting torch which comprises a nozzle, a cutting torch barrel, a mixed injection pipe, a handle and a gas pipeline, wherein one end of the cutting torch barrel and one end of the mixed injection pipe are connected with the nozzle, the other end of the cutting torch barrel and the other end of the mixed injection pipe are connected with the head of the handle, the gas pipeline is arranged at the tail of the handle, needle shaft assemblies for avoiding backfire are arranged between the cutting torch barrel, the mixed injection pipe and the gas pipeline and the handle, each needle shaft assembly comprises a needle shaft valve seat, a needle shaft, a spring and a needle shaft valve, and the needle shaft valve seats, the springs and the needle shaft valves are all arranged in the needle shaft, wherein the needle shaft valves are sleeved on the needle shaft valve seats.

Furthermore, a first adjusting control valve is arranged on the cutting torch barrel, a second adjusting control valve is arranged on the mixed injection pipe, and a third adjusting control valve is arranged on the gas pipeline.

Further, an oxygen inlet and an acetylene inlet are arranged on the gas pipeline, and the third adjusting control valve is arranged at the adjacent position of the acetylene inlet and controls the acetylene flow at the acetylene inlet.

Furthermore, the needle shaft valve is provided with a first opening and a second opening, the two ends of the first opening and the second opening are respectively communicated with each other, the diameter of the first opening is larger than that of the second opening, two third openings which are symmetrical to each other are formed in the outer side surface of the needle shaft valve, the third openings are located between the first opening and the second opening, the first opening, the second opening, the third opening, the fixed block and the spring are communicated with each other, the fixed block for fixing the spring is further extended from the outer side surface of the needle shaft valve, and one end of the spring is fixed to the fixed.

Further, the needle shaft valve seat comprises a cap and a shaft rod, the shaft rod is arranged on the cap, one end of the shaft rod is larger than the diameter of the second opening and smaller than the diameter of the first opening, one end of the spring is in contact with the cap, the other end of the spring is placed on the fixing block, one end of the shaft rod penetrates through the spring to be arranged in the needle shaft valve, and the shaft rod is controlled to close or open the second opening through compression or expansion of the spring.

(III) advantageous effects

Compared with the prior art, its beneficial effect is:

1. according to the cutting torch, due to the arrangement of the needle shaft assembly, the condition that sparks enter an oxygen cylinder or an acetylene cylinder through a pipeline to cause explosion of the gas cylinder after the cutting torch is normally turned off after cutting can be avoided.

2. The needle shaft assembly comprises a needle shaft valve seat, a needle shaft, a spring and a needle shaft valve, wherein the needle shaft valve seat, the spring and the needle shaft valve are all arranged in the needle shaft, the needle shaft valve is sleeved on the needle shaft valve seat through the spring, the spark enters the needle shaft assembly through a pipeline and is matched with the needle shaft valve seat, the spring and the needle shaft valve in the needle shaft assembly, when gas is stamped, the needle shaft valve is stamped by gas to move along the needle shaft valve seat until one end of the needle shaft valve seat abuts against the needle shaft valve, one end of the needle shaft valve is sealed, the spark is prevented from entering an oxygen bottle or an acetylene bottle, the spring is in a compressed state, after the gas stamping is completed, the spring resets, and the needle shaft valve seat and the needle shaft valve reset to wait for next work.

3. Be equipped with first regulation control valve on the cutting torch barrel, be equipped with second regulation control valve on the mixed injection pipe, be equipped with third regulation control valve on the gas pipeline, be convenient for like this guarantee nimble control and adjust the gas flow of cutting torch barrel, mixed injection pipe and gas pipeline.

4. The needle shaft valve is provided with a first opening and a second opening which are communicated with each other at two ends, the diameter of the first opening is larger than that of the second opening, two third openings which are symmetrical to each other are arranged on the outer side surface of the needle shaft valve, the third openings are positioned between the first opening and the second opening and are communicated with each other, a fixed block for fixing a spring is further extended on the outer side surface of the needle shaft valve, one end of the spring is fixedly arranged on the fixed block, the needle shaft valve seat comprises a cover cap and a shaft rod, the shaft rod is arranged on the cover cap, one end of the shaft rod is larger than the diameter of the second opening but smaller than that of the first opening, one end of the spring is in contact with the cover cap, the other end of the spring is arranged on the fixed block, one end of the shaft rod penetrates through the spring and is arranged in the needle shaft valve, and the shaft rod is controlled to close or open the second opening by the compression or, like this when gaseous punching press, the needle shaft valve receives gaseous punching press to move along the needle shaft disk seat, and the second opening on the needle shaft valve is withstood to axostylus axostyle one end on the needle shaft disk seat, makes it sealed, avoids during the spark enters into oxygen cylinder or acetylene cylinder, and unnecessary gas then discharges through the third opening, and this spring is the compression form this moment, and when gaseous punching press completion back, the spring resets, and needle shaft disk seat and needle shaft valve playback wait for next work.

Drawings

FIG. 1 is a schematic plan view of a torch in accordance with the present invention.

Figure 2 is an exploded view of the construction of a torch of the present invention.

Figure 3 is an exploded view of the pin shaft assembly construction of a torch of the present invention.

In the figure, a nozzle 1, a cutting torch barrel 2, a mixing injection pipe 3, a handle 4, a gas pipeline 5, a needle shaft assembly 6, a needle shaft valve seat 7, a needle shaft 8, a spring 9, a needle shaft valve 10, a first adjusting control valve 11, a second adjusting control valve 12, a third adjusting control valve 13, an oxygen inlet 14, an acetylene inlet 15, a first opening 16, a second opening 17, a third opening 18, a fixed block 19, a cover cap 20 and a shaft rod 21.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

Examples

As shown in fig. 1-3, the invention provided by the invention provides a cutting torch, which comprises a nozzle 1, a cutting torch barrel 2, a mixed injection pipe 3, a handle 4 and a gas pipeline 5, wherein one end of the cutting torch barrel 2 and one end of the mixed injection pipe 3 are connected with the nozzle 1, the other end of the cutting torch barrel 2 and the other end of the mixed injection pipe 3 are connected with the head of the handle 4, the gas pipeline 5 is arranged at the tail of the handle 4, a needle shaft assembly 6 for avoiding backfire is arranged between the cutting torch barrel 2, the mixed injection pipe 3 and the handle 4, the needle shaft assembly 6 comprises a needle shaft valve seat 7, a needle shaft 8, a spring 9 and a needle shaft valve 10, the needle shaft valve seat 7, the spring 9 and the needle shaft valve 10 are all arranged in the needle shaft 8, wherein the needle shaft valve 10 is sleeved on the needle shaft valve seat 7 through the spring 9, a first adjusting control valve 11 is arranged on the cutting torch 2, a second adjusting control valve 12 is arranged on the, the gas pipeline 5 is provided with a third adjusting control valve 13, the gas pipeline 5 is provided with an oxygen inlet 14 and an acetylene inlet 15, the third adjusting control valve 13 is arranged at the adjacent position of the acetylene inlet 15 and controls the acetylene flow at the acetylene inlet 15, the needle shaft valve 10 is provided with a first opening 16 and a second opening 17 which are communicated with each other at two ends, the diameter of the first opening 16 is larger than that of the second opening 17, the outer surface of the needle shaft valve 10 is provided with two symmetrical third openings 18, the third opening 18 is positioned between the first opening 16 and the second opening 17 and communicated with each other, a fixed block 19 for fixing the spring 9 is also extended on the outer surface of the needle shaft valve 10, one end of the spring 9 is fixed on the fixed block 19, the needle shaft valve seat 7 comprises a cover cap 20 and a shaft lever 21, the shaft 21 is arranged on the cap 20, wherein one end of the shaft 21 has a diameter larger than the diameter of the second opening 17 but smaller than the diameter of the first opening 16, one end of the spring 9 is in contact with the cap 20, the other end of the spring is placed on the fixed block 19, one end of the shaft 21 is arranged in the needle shaft valve 10 through the spring 9, and the closing or opening of the second opening 17 by the shaft 21 is controlled by the compression or expansion of the spring 9.

In the cutting torch provided by the embodiment, the needle shaft assembly 6 is arranged to prevent sparks entering an oxygen cylinder or an acetylene cylinder through a pipeline to cause the explosion of the gas cylinder after the cutting torch is normally turned off, the needle shaft assembly 6 comprises a needle shaft valve seat 7, a needle shaft 8, a spring 9 and a needle shaft valve 10, the needle shaft valve seat 7, the spring 9 and the needle shaft valve 10 are all arranged in the needle shaft 8, the needle shaft valve 10 is sleeved on the needle shaft valve seat 7 through the spring 9, the sparks enter the needle shaft assembly 6 through the pipeline and are matched with the needle shaft valve seat 7, the spring 9 and the needle shaft valve 10 in the needle shaft assembly 6, when gas is punched, the needle shaft valve 10 is punched by the gas to move along the needle shaft valve seat 7 until one end of the needle shaft valve seat 7 abuts against the needle shaft valve 10, so that one end of the needle shaft valve is sealed, and the sparks are prevented from entering the oxygen cylinder or the acetylene cylinder, at the moment, the spring 9 is in a compressed state, after the gas stamping is finished, the spring 9 is reset, the needle shaft valve seat 7 and the needle shaft valve 10 are reset to wait for the next work, the cutting torch barrel 2 is provided with a first adjusting control valve 11, the mixed injection tube 3 is provided with a second adjusting control valve 12, the gas pipeline 5 is provided with a third adjusting control valve 13, so that the gas flow of the cutting torch barrel 2, the mixed injection tube 3 and the gas pipeline 5 can be flexibly controlled and adjusted, the needle shaft valve 10 is provided with a first opening 16 and a second opening 17 which are communicated with each other at two ends, the diameter of the first opening 16 is larger than that of the second opening 17, two third openings 18 which are symmetrical with each other are formed on the outer side surface of the needle shaft valve 10, the third openings 18 are positioned between the first opening 16 and the second opening 17 and are communicated with each other, and a fixing block 19 for fixing the spring 9 is further extended from the outer side surface of the needle shaft valve 10, one end of the spring 9 is fixed on the fixing block 19, the needle shaft valve seat 7 comprises a cap 20 and a shaft 21, the shaft 21 is arranged on the cap 20, wherein the diameter of one end of the shaft 21 is larger than the diameter of the second opening 17 but smaller than the diameter of the first opening 16, one end of the spring 9 is in contact with the cap 20, the other end of the spring is arranged on the fixing block 19, one end of the shaft 21 penetrates through the spring 9 and is arranged in the needle shaft valve 10, and the compression or expansion of the spring 9 is used for controlling the closing or opening of the second opening 17 by the shaft 21, so that when gas is punched, the needle shaft valve 10 is punched by the gas to move along the needle shaft valve seat 7 until one end of the shaft 21 on the needle shaft valve seat 7 is pressed against the second opening 17 on the needle shaft valve 10 to seal the second opening, so that sparks are prevented from entering into an oxygen bottle or an acetylene bottle, and redundant gas is discharged through the third opening 18, at the moment, the spring 9 is in a compressed state, and after the gas stamping is finished, the spring 9 resets, and the needle shaft valve seat 7 and the needle shaft valve 10 reset to wait for the next work.

When the gas-jet burner works, the oxygen cylinder and the acetylene cylinder are opened, so that two gases enter the nozzle 1 through the handle 4, the cutting torch barrel 2 and the mixed injection pipe 3, then ignition starts to work, at the moment, the first regulating control valve 11, the second regulating control valve 12 and the third regulating control valve 13 correspondingly control the flow of the gases and the mixed gas, after the work is finished, gas supply is closed, at the moment, the gas with sparks is punched along the oxygen cylinder or the acetylene cylinder and passes through the needle shaft assembly 6, the needle shaft valve 10 moves along the needle shaft valve seat 7 under the punching of the gas until one end of a shaft rod 21 on the needle shaft valve seat 7 props against a second opening 17 on the needle shaft valve 10 to seal the gas, so that the sparks are prevented from entering the oxygen cylinder or the acetylene cylinder, the redundant gas is discharged through the third opening 18, at the moment, the spring 9 is in a compressed state, and after the gas punching is finished, the spring 9 is reset, the needle shaft valve seat 7 and the needle shaft valve 10 are reset to wait for the next work.

The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention.

Claims

1. A cutting torch comprises a nozzle (1), a cutting torch barrel (2), a mixed injection pipe (3), a handle (4) and a gas pipeline (5), one end of the cutting torch gun tube (2) and one end of the mixed injection tube (3) are connected with the nozzle (1), the other end of the mixed injection tube is connected with the head part of the handle (4), the gas pipeline (5) is arranged at the tail part of the handle (4), it is characterized in that needle shaft components (6) for avoiding backfire are arranged among the cutting torch gun tube (2), the mixed injection tube (3) and the gas pipeline (5) and the handle (4), the needle shaft component (6) comprises a needle shaft valve seat (7), a needle shaft (8), a spring (9) and a needle shaft valve (10), the needle shaft valve seat (7), the spring (9) and the needle shaft valve (10) are all arranged in the needle shaft (8), the needle shaft valve (10) is sleeved on the needle shaft valve seat (7) through a spring (9).

2. A cutting torch according to claim 1, characterized in that the torch barrel (2) is provided with a first regulating control valve (11), the mixing injection tube (3) is provided with a second regulating control valve (12), and the gas pipe (5) is provided with a third regulating control valve (13).

3. A cutting torch according to claim 2, characterized in that the gas pipe (5) is provided with an oxygen inlet (14) and an acetylene inlet (15), and the third regulating and controlling valve (13) is arranged adjacent to the acetylene inlet (15) and controls the acetylene flow at the acetylene inlet (15).

4. The cutting torch according to claim 1, wherein the pintle valve (10) is provided with a first opening (16) and a second opening (17) which are provided with a through hole at two ends thereof, respectively, the diameter of the first opening (16) is larger than that of the second opening (17), two third openings (18) which are symmetrical to each other are formed in the outer side surface of the pintle valve (10), the third openings (18) are positioned between the first opening (16) and the second opening (17) and are communicated with each other, a fixing block (19) for fixing the spring (9) extends from the outer side surface of the pintle valve (10), and one end of the spring (9) is fixed on the fixing block (19).

5. A cutting torch according to claim 1, characterized in that the needle spindle valve seat (7) comprises a cap (20) and a spindle (21), the spindle (21) is arranged on the cap (20), wherein the spindle (21) has one end with a diameter larger than the diameter of the second opening (17) but smaller than the diameter of the first opening (16), the spring (9) has one end in contact with the cap (20) and the other end placed on the fixed block (19), one end of the spindle (21) is arranged in the needle spindle valve (10) through the spring (9), and the closing or opening of the second opening (17) by the spindle (21) is controlled by the compression or expansion of the spring (9).