Anti-backfire cutting torch for welding and cutting equipment

Abstract

The utility model relates to the field of anti-backfire cutting torches, in particular to an anti-backfire cutting torch for welding and cutting equipment, the head of a cutting torch component is provided with a mounting seat, an anti-backfire cutting torch body is assembled on the mounting seat, and the outer side of the anti-backfire cutting torch body is fixedly sleeved with an assembly sleeve; a plurality of clamping grooves are formed in the side, away from the mounting base, of the assembling sleeve, a plurality of torsional springs are arranged on the mounting base, clamping blocks are arranged at the movable ends of the torsional springs, and the clamping blocks are matched with the clamping grooves. According to the anti-backfire cutting torch, the mounting base is arranged at the head of the cutting torch assembly, the anti-backfire cutting torch body is inserted into the mounting base, and the anti-backfire cutting torch body can be fixed by being matched with clamping between the external threads and the internal threads and clamping and fixing between the clamping groove and the clamping block; by means of the installation mode, the anti-backfire cutting torch body can be firmly and fixedly installed without the help of an external tool, and the anti-backfire cutting torch is convenient to use by a user.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-flashback cutting nozzles, in particular to an anti-flashback cutting nozzle for welding and cutting equipment. Background Art

[0002] The anti-flashback cutting nozzle is a special cutting nozzle design, whose main function is to prevent equipment damage or accidents caused by flashback during welding or cutting. Flashback may occur during welding or cutting when the welding or cutting torch nozzle is blocked, overheated, or when the gas pressure, flow rate and other conditions are not suitable. Flashback may not only cause equipment damage, but also cause serious safety accidents.

[0003] The anti-flashback cutting nozzle is usually installed on the cutting torch through threads. Although this installation method is very convenient and stable, during the installation process, a wrench is required to rotate the mounting part of the anti-flashback cutting nozzle. If a wrench is not used, the threaded connection cannot be completely tightened. This requires the use of an external wrench during the installation of the anti-flashback cutting nozzle, which is very inconvenient and not conducive to the user's disassembly and replacement of the anti-flashback cutting nozzle anytime and anywhere. Therefore, an anti-flashback cutting nozzle that can be disassembled and assembled without relying on external tools is urgently needed. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes an anti-flashback cutting nozzle for welding and cutting equipment.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A flashback cutting nozzle for welding and cutting equipment comprises a cutting torch assembly and an flashback cutting nozzle body, wherein a mounting seat is arranged at the head of the cutting torch assembly, the flashback cutting nozzle body is mounted on the mounting seat, and an assembly sleeve is arranged at the outer fixed sleeve of the flashback cutting nozzle body; a plurality of slots are arranged on the assembly sleeve at a side away from the mounting seat, a plurality of torsion springs are arranged on the mounting seat, and a clamping block is arranged on the movable end of the torsion spring, and the clamping block is matched with the slot.

[0007] In addition, a preferred structure is that an external thread is provided on the side of the anti-backfire cutting nozzle body facing the mounting seat, and an internal thread is provided inside the mounting seat to match the external thread.

[0008] In addition, a preferred structure is that an assembly cavity is provided between the assembly sleeve and the anti-flashback cutting nozzle body, and the assembly cavity is located on a side of the anti-flashback cutting nozzle body facing the mounting seat.

[0009] In addition, a preferred structure is that the assembly cavity is matched with the mounting seat, and when the anti-flashback cutting nozzle body is installed in the mounting seat, the mounting seat is located in the assembly cavity.

[0010] In addition, a preferred structure is that the outer side of the assembly sleeve is inclined, and the diameter of the end of the assembly sleeve close to the slot is larger, and the diameter of the end away from the slot is smaller.

[0011] In addition, a preferred structure is that a plurality of torsion spring seats are fixedly provided on the outer side of the mounting seat on the cutting torch assembly, and the torsion springs are all mounted on the torsion spring seats.

[0012] The beneficial effects of the utility model are as follows: a mounting seat is provided at the head of the cutting torch assembly, and the anti-flashback cutting nozzle body is fixed by inserting the anti-flashback cutting nozzle body into the mounting seat, and cooperating with the clamping device between the external thread and the internal thread, and the clamping device between the clamping groove and the clamping block, so that the anti-flashback cutting nozzle body can be quickly and conveniently installed on the cutting torch assembly. This installation method can firmly fix the anti-flashback cutting nozzle body without the aid of external tools, and is convenient for users to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic structural diagram of an anti-flashback cutting nozzle for welding and cutting equipment proposed by the utility model;

[0014] Figure 2 for Figure 1 Schematic diagram of the structure of the middle anti-tempering cutting nozzle when the main body is disassembled;

[0015] Figure 3 It is a structural schematic diagram of an anti-flashback cutting nozzle body of an anti-flashback cutting nozzle for welding and cutting equipment proposed by the utility model;

[0016] Figure 4 The utility model is a schematic structural diagram of a mounting seat of an anti-flashback cutting nozzle for welding and cutting equipment.

[0017] In the figure: 1 cutting torch assembly, 2 anti-backfire cutting nozzle body, 21 external thread, 3 assembly set, 31 assembly cavity, 32 slot, 4 mounting seat, 41 internal thread, 5 torsion spring seat, 51 torsion spring, 52 clamping block. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0019] Reference Figure 1-4A flashback cutting nozzle for welding and cutting equipment includes a cutting torch assembly 1 and an anti-flashback cutting nozzle body 2. A mounting seat 4 is provided at the head of the cutting torch assembly 1, and the anti-flashback cutting nozzle body 2 is mounted on the mounting seat 4, and an assembly sleeve 3 is provided on the outer fixed sleeve of the anti-flashback cutting nozzle body 2. A plurality of slots 32 are provided on the side of the assembly sleeve 3 away from the mounting seat 4, and a plurality of torsion springs 51 are provided on the mounting seat 4. Blocks 52 are provided on the movable ends of the torsion springs 51, and the blocks 52 are adapted to the slots 32. The anti-flashback cutting nozzle body 2 is installed on the head of the cutting torch assembly 1 through the mounting seat 4, and it is worth noting that the specific structures and working methods of the cutting torch assembly 1 and the anti-flashback cutting nozzle body 2 are all existing technologies currently disclosed on the market, and they do not belong to the main technical problems to be solved in the present technical solution, so they are not elaborated in the present utility model.

[0020] Among them, the anti-flashback cutting nozzle body 2 is provided with an external thread 21 on the side facing the mounting seat 4, and the interior of the mounting seat 4 is adapted to be provided with an internal thread 41 corresponding to the external thread 21. The anti-flashback cutting nozzle body 2 can be installed by the mutual clamping between the external thread 21 and the internal thread 41, and since the thread clamping structure in the technical solution is only for auxiliary fixing, there is no need to make the thread clamping part particularly firm, so the thread only needs to be tightened by hand.

[0021] Among them, an assembly cavity 31 is provided between the assembly sleeve 3 and the anti-flashback cutting nozzle body 2, and the assembly cavity 31 is located on the side of the anti-flashback cutting nozzle body 2 facing the mounting seat 4. The assembly cavity 31 is adapted to the mounting seat 4, and when the anti-flashback cutting nozzle body 2 is installed in the mounting seat 4, the mounting seat 4 is located in the assembly cavity 31. By assembling the mounting seat 4 in the mounting cavity 31, the anti-flashback cutting nozzle body 2 can be installed.

[0022] The outer side of the mounting sleeve 3 is inclined, and the diameter of the end of the mounting sleeve 3 close to the slot 32 is larger, while the diameter of the end away from the slot 32 is smaller.

[0023] A plurality of torsion spring seats 5 are fixedly arranged on the outer side of the mounting seat 4 on the cutting torch assembly 1 , and the torsion springs 51 are all mounted on the torsion spring seats 5 .

[0024] In this embodiment, when the user needs to install the anti-flashback cutting nozzle body 2, he only needs to insert the anti-flashback cutting nozzle body 2 into the mounting seat 4, and rotate the anti-flashback cutting nozzle body 2 so that the outer thread 21 on the outside and the inner thread 41 in the mounting seat 4 are mutually engaged. When the installation of the anti-flashback cutting nozzle body 2 is completed, the assembly cavity 31 in the assembly sleeve 3 will be mounted on the outer side of the mounting seat 4.

[0025] Furthermore, when the anti-flashback cutting nozzle body 2 is inserted into the mounting seat 4, the user needs to bend the block 52 on the torsion spring 51 outward so that the block 52 is located outside the assembly sleeve 3. At this time, the anti-flashback cutting nozzle body 2 can continue to be rotated. Since the outer side of the assembly sleeve 3 is inclined, when the anti-flashback cutting nozzle body 2 moves into the mounting seat 4, the block 52 will not block the assembly sleeve 3. When the anti-flashback cutting nozzle body 2 is fully inserted into the mounting seat 4, the slot 32 on the assembly sleeve 3 can automatically move to the block 52. At this time, the block 52 can move into the slot 32 by the elastic force of the torsion spring 51, so that the anti-flashback cutting nozzle body 2 can be installed by the adapter between the slot 32 and the slot 52.

[0026] In the utility model, a mounting seat 4 is provided at the head of the cutting torch assembly 1. By inserting the anti-flashback cutting nozzle body 2 into the mounting seat 4, and cooperating with the clamping arrangement between the external thread 21 and the internal thread 41, and the clamping arrangement between the clamping groove 32 and the clamping block 52, the anti-flashback cutting nozzle body 2 can be fixed, so that the anti-flashback cutting nozzle body 2 can be quickly and conveniently installed on the cutting torch assembly 1. This installation method can firmly fix the anti-flashback cutting nozzle body 2 without the aid of external tools, which is convenient for users to use.

[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A flashback-proof cutting nozzle for welding and cutting equipment, comprising a cutting torch assembly (1) and a flashback-proof cutting nozzle body (2), characterized in that: The head of the cutting torch assembly (1) is provided with a mounting seat (4), the mounting seat (4) is equipped with an anti-flashback cutting nozzle body (2), and the outer fixed sleeve of the anti-flashback cutting nozzle body (2) is provided with a mounting sleeve (3); A plurality of slots (32) are provided on the side of the assembly sleeve (3) away from the mounting seat (4), a plurality of torsion springs (51) are provided on the mounting seat (4), and a clamping block (52) is provided on the movable end of each torsion spring (51), and each clamping block (52) is adapted to fit the slots (32).

2. The anti-flashback cutting nozzle for welding and cutting equipment according to claim 1, characterized in that: An external thread (21) is provided on the side of the anti-backfire cutting nozzle body (2) facing the mounting seat (4), and an internal thread (41) is provided inside the mounting seat (4) to match the external thread (21).

3. The anti-flashback cutting nozzle for welding and cutting equipment according to claim 2, characterized in that: An assembly cavity (31) is provided between the assembly sleeve (3) and the anti-flashback cutting nozzle body (2), and the assembly cavity (31) is located on a side of the anti-flashback cutting nozzle body (2) facing the mounting seat (4).

4. The anti-flashback cutting nozzle for welding and cutting equipment according to claim 3, characterized in that: The assembly cavity (31) is adapted to the mounting seat (4); when the anti-flashback cutting nozzle body (2) is mounted in the mounting seat (4), the mounting seat (4) is located in the assembly cavity (31).

5. The anti-flashback cutting nozzle for welding and cutting equipment according to claim 4, characterized in that: The outer side of the assembly sleeve (3) is arranged in an inclined manner; the diameter of the end of the assembly sleeve (3) close to the card slot (32) is larger, and the diameter of the end away from the card slot (32) is smaller.

6. The anti-flashback cutting nozzle for welding and cutting equipment according to claim 5, characterized in that: A plurality of torsion spring seats (5) are fixedly arranged on the outer side of the mounting seat (4) on the cutting torch assembly (1), and the torsion springs (51) are all mounted on the torsion spring seats (5).

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