A sheath for a plasma torch

Abstract

The utility model discloses a kind of sheaths for plasma torch, including connecting pipe, welding head and sheath, the welding head side is provided with nozzle by threaded sleeve joint, the connecting pipe is installed in welding head side by thread, the sheath is provided with the fixing mechanism of convenient fixed sheath between welding head. The utility model will sheath sleeve joint in welding head outside, make limit block and perforation alignment simultaneously, limit block is penetrated into perforation inside when sleeve joint, until limit block moves to inside cavity, then rotates sheath, make limit block follow sheath movement, so that limit block and perforation are out of position, prevent limit block from separating from inside cavity in this way, complete the installation work of sheath, reverse rotation limit block and perforation can be aligned when disassembling, so that sheath disassembly installation is simple and convenient, and need not be carried out by thread, guarantee the reliability of sheath installation when long time is used.

Description

Technical Field

[0001] This utility model relates to the field of plasma torches, specifically a casing for plasma torches. Background Technology

[0002] A plasma torch (also known as a plasma generator or plasma heating system) is a specialized device developed based on this principle. A plasma torch generates high-temperature gas through an electric arc and can operate in oxidizing, reducing, or inert environments. It can provide a heat source for industrial furnaces with various functions such as gasification, cracking, reaction, melting, and smelting.

[0003] The outer side of the plasma torch ejector needs to be protected by a sleeve. The existing sleeve is threaded onto one side of the welding head, requiring the threads to be machined on the outside of the welding head. After long-term use, the sleeve needs to be replaced, which requires disassembling the sleeve and replacing it with a new one. Over time, the threads may strip, making it impossible to install the new sleeve on the welding head. In this case, the entire welding head needs to be replaced, resulting in a waste of resources. Therefore, there is an urgent need for a device to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a casing for a plasma torch to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a plasma torch sleeve, comprising a connecting tube, a welding head, and a sleeve, wherein a nozzle is provided on one side of the welding head by means of a threaded connection, the connecting tube is installed on one side of the welding head by means of a thread, and a fixing mechanism is provided between the sleeve and the welding head to facilitate fixing the sleeve.

[0006] The fixing mechanism includes a fixing ring, an extrusion assembly, a perforation, a cavity, and a limiting block. The fixing ring is fixed around the outside of the welding head. The extrusion assembly is disposed inside the fixing ring. The cavity is located inside the fixing ring. The perforation is located on one side of the fixing ring. The limiting block is fixed to the outside of the sleeve. In use, the sleeve is fitted onto the outside of the welding head, aligning the limiting block with the perforation. During fitting, the limiting block passes into the perforation until it moves into the cavity. Then, the sleeve is rotated, causing the limiting block to move with the sleeve, thus misaligning the limiting block with the perforation. This prevents the limiting block from detaching from the cavity, completing the installation of the sleeve. For disassembly, simply rotate the sleeve in the opposite direction until it aligns with the perforation. This sleeve installation and disassembly is simple and convenient, and does not require threads, ensuring the reliability of the sleeve installation during long-term use.

[0007] Preferably, the extrusion assembly includes an extrusion ring and a spring. The extrusion ring is slidably disposed inside the cavity, and the spring is fixed between the extrusion ring and the inner wall of the cavity. During use, when the sleeve is inserted into the fixed ring, the outer side of the extrusion ring is extruded, thus compressing the spring to a compressed state. After the sleeve is installed, the spring force compresses the extrusion ring tightly against the outer side of the limiting block, which increases the friction between the limiting block and the extrusion ring, thereby ensuring the stability of the sleeve after installation.

[0008] Preferably, a vent hole is provided at the center of the welding head to facilitate the passage of air.

[0009] Preferably, one side of the perforation is connected to the inside of the cavity, and the other side of the perforation is connected to the outside.

[0010] Preferably, there are two perforations, symmetrically located on both sides of the fixing ring.

[0011] Preferably, two limiting blocks are provided, symmetrically installed on both sides of the sleeve, and the limiting blocks fit into the perforations.

[0012] Preferably, the side of the extrusion ring near the limiting block has a rough surface.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. In use, the sleeve is fitted onto the outside of the welding head, while aligning the limiting block with the through hole. During fitting, the limiting block is inserted into the through hole until it moves into the cavity. Then, the sleeve is rotated so that the limiting block moves with the sleeve, thereby misaligning the limiting block with the through hole. This prevents the limiting block from leaving the cavity, completing the installation of the sleeve. To disassemble, simply rotate the sleeve in the opposite direction until it aligns with the through hole. The sleeve is easy to install and remove and does not require threads, ensuring the reliability of the sleeve installation during long-term use.

[0015] 2. When the sleeve is inserted into the fixing ring during use, the outer side of the compression ring is squeezed, thus compressing the spring. After the sleeve is installed, the spring force squeezes the compression ring tightly against the outer side of the limiting block, which increases the friction between the limiting block and the compression ring, thereby ensuring the stability of the sleeve after installation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a plasma torch sheath according to the present invention;

[0017] Figure 2 This is a cross-sectional view of a plasma torch casing according to the present invention;

[0018] Figure 3This is an enlarged schematic diagram of a plasma torch casing A according to the present invention.

[0019] In the diagram: 1. Connecting pipe; 2. Welding head; 3. Fixing ring; 4. Sheath; 5. Nozzle; 6. Perforation; 7. Cavity; 8. Limiting block; 9. Extrusion ring; 10. Spring; 11. Vent hole. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-3 This utility model provides a plasma torch sleeve, including a connecting tube 1, a welding head 2 and a sleeve 4. A nozzle 5 is threadedly connected to one side of the welding head 2, and the connecting tube 1 is threadedly installed on one side of the welding head 2. There is a fixing mechanism between the sleeve 4 and the welding head 2 to facilitate fixing the sleeve 4.

[0022] The fixing mechanism includes a fixing ring 3, an extrusion assembly, a perforation 6, a cavity 7, and a limiting block 8. The fixing ring 3 is welded and fixed around the outside of the welding head 2. The extrusion assembly is inside the fixing ring 3. The cavity 7 is located inside the fixing ring 3. The perforation 6 is located on one side of the fixing ring 3, with one side communicating with the inside of the cavity 7 and the other side communicating with the outside. There are two perforations 6, symmetrically located on both sides of the fixing ring 3. The limiting block 8 is welded and fixed to the outside of the sleeve 4. There are two limiting blocks 8, symmetrically installed on both sides of the sleeve 4. The limiting blocks 8 fit into the perforations 6. During use, [the perforation 6 is inserted here]. The sleeve 4 is fitted onto the outside of the welding head 2, aligning the limiting block 8 with the through hole 6. During fitting, the limiting block 8 is inserted into the through hole 6 until it moves into the cavity 7. Then, the sleeve 4 is rotated, causing the limiting block 8 to move with it, thus misaligning the limiting block 8 with the through hole 6. This prevents the limiting block 8 from dislodging from the cavity 7, completing the installation of the sleeve 4. To disassemble, simply rotate the sleeve 4 in the opposite direction to align it with the through hole 6. The sleeve 4 is easy to install and remove without using threads, ensuring the reliability of the sleeve 4 installation during long-term use.

[0023] The extrusion assembly includes an extrusion ring 9 and a spring 10. The extrusion ring 9 slides inside the cavity 7. The side of the extrusion ring 9 near the limiting block 8 has a rough surface. The spring 10 is welded and fixed between the extrusion ring 9 and the inner wall of the cavity 7. During use, when the sleeve 4 is inserted into the fixed ring 3, the outer side of the extrusion ring 9 is extruded, thus compressing the spring 10 to a compressed state. After the sleeve 4 is installed, the spring 10 presses the extrusion ring 9 tightly against the outer side of the limiting block 8, which increases the friction between the limiting block 8 and the extrusion ring 9, thereby ensuring the stability of the sleeve 4 after installation.

[0024] A vent hole 11 is provided at the center of the welding head 2 to facilitate the passage of air.

[0025] Working principle: During use, the sleeve 4 is fitted onto the outside of the welding head 2, while aligning the limiting block 8 with the through hole 6. During fitting, the limiting block 8 is inserted into the through hole 6 until it moves into the cavity 7. Then, the sleeve 4 is rotated, causing the limiting block 8 to move with the sleeve 4, thus misaligning the limiting block 8 with the through hole 6. This prevents the limiting block 8 from dislodging from the cavity 7, completing the installation of the sleeve 4. To disassemble, simply rotate the sleeve 4 in the opposite direction until it aligns with the through hole 6. The sleeve 4 is easy to install and remove without using threads, ensuring the reliability of the sleeve 4 installation during long-term use. During use, when the sleeve 4 is inserted into the fixing ring 3, the outer side of the compression ring 9 is squeezed, thus compressing the spring 10. After the sleeve 4 is installed, the spring 10 compresses the compression ring 9 tightly against the outer side of the limiting block 8, increasing the friction between the limiting block 8 and the compression ring 9, thereby ensuring the stability of the sleeve 4 after installation.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A plasma torch sheath, comprising a connecting tube (1), a welding head (2), and a sheath (4), characterized in that: A nozzle (5) is provided on one side of the welding head (2) by a threaded connection, and the connecting pipe (1) is installed on one side of the welding head (2) by a thread. A fixing mechanism for fixing the sleeve (4) is provided between the sleeve (4) and the welding head (2). The fixing mechanism includes a fixing ring (3), an extrusion assembly, a perforation (6), a cavity (7), and a limiting block (8). The fixing ring (3) is fixed around the outside of the welding head (2). The extrusion assembly is located inside the fixing ring (3). The cavity (7) is located inside the fixing ring (3). The perforation (6) is located on one side of the fixing ring (3). The limiting block (8) is fixed on the outside of the sleeve (4).

2. The plasma torch sheath according to claim 1, characterized in that: The extrusion assembly includes an extrusion ring (9) and a spring (10). The extrusion ring (9) is slidably disposed inside the cavity (7), and the spring (10) is fixed between the extrusion ring (9) and the inner wall of the cavity (7).

3. The plasma torch sheath according to claim 2, characterized in that: The welding head (2) has a ventilation hole (11) at the center to facilitate air passage.

4. The plasma torch sheath according to claim 3, characterized in that: One side of the perforation (6) is connected to the inside of the cavity (7), and the other side of the perforation (6) is connected to the outside.

5. The plasma torch sheath according to claim 4, characterized in that: Two perforations (6) are provided, symmetrically opened on both sides of the fixing ring (3).

6. The plasma torch sheath according to claim 5, characterized in that: Two limiting blocks (8) are provided and are symmetrically installed on both sides of the sleeve (4). The limiting blocks (8) fit into the perforation (6).

7. The plasma torch sheath according to claim 6, characterized in that: The side of the extrusion ring (9) near the limiting block (8) is rough.

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