Plasma arc cutting torch
By incorporating a flow guiding structure within the pressure cap of the plasma arc cutting torch, the problem of insufficient coolant caused by high temperature at the end of the pressure cap is solved, thereby improving cutting efficiency.
Patent Information
- Application Number
- CN202423274526.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2034-12-27
AI Technical Summary
The high temperature at the end of the pressure cap of the plasma arc cutting torch leads to insufficient coolant flow and a decrease in cutting energy.
A flow guiding structure is set inside the pressure cap, including a liquid collection ring groove, a flow guiding channel and a water guiding groove, and the coolant is guided to the end of the pressure cap for cooling through the liquid inlet channel.
The compression density of the plasma arc was increased, thereby enhancing the cutting energy.
Smart Images
Figure CN223642951U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of plasma arc cutting technology, and in particular to a plasma arc cutting torch. Background Technology
[0002] A plasma torch is a tool used for plasma arc cutting. Its working principle is to ionize gas with a high-frequency electric arc to form plasma, and then use this high-temperature plasma to cut the workpiece.
[0003] A high-temperature plasma arc is emitted from the electrode tip, which is compressed through the nozzle to form a high-energy cutting plasma arc. The plasma torch includes a rectangular base and a pressure cap. The pressure cap is threadedly connected to the rectangular base, and a nozzle is provided on the pressure cap. The plasma arc is ejected through the nozzle, resulting in a high temperature at the nozzle location. The rectangular base has a liquid inlet and a liquid outlet. Coolant enters the torch through the liquid inlet and is discharged through the liquid outlet under negative pressure. However, only a very small portion of the coolant moves to the end of the pressure cap, resulting in a high temperature at the end of the pressure cap. This leads to a lower density of plasma arc compression, resulting in a decrease in cutting energy. Utility Model Content
[0004] To address the issue of high temperature at the end of the pressure cap leading to a decrease in cutting energy, this application provides a plasma arc cutting torch.
[0005] The plasma arc cutting torch provided in this application adopts the following technical solution:
[0006] A plasma arc cutting torch includes a rectangular base and a pressure cap. The rectangular base has a liquid inlet channel and a liquid outlet channel. The pressure cap is threadedly connected to the rectangular base. The pressure cap has a nozzle at its end. The pressure cap has a flow guiding structure inside. The flow guiding structure is connected to both the liquid inlet channel and the liquid outlet channel. The flow guiding structure is used to guide coolant to the end of the pressure cap.
[0007] By adopting the above technical solution, the coolant enters the rectangular seat through the inlet channel, and then the coolant is guided to the end of the pressure cap through the flow guiding structure to cool the end of the pressure cap, which helps to improve the compression density of the sub-plasma arc and thus improve the cutting energy of the plasma arc.
[0008] Preferably, the flow guiding structure includes a liquid collecting ring groove, which is formed around the nozzle on the inner wall of the pressure cap, and the liquid collecting ring groove is connected to the liquid inlet channel.
[0009] By adopting the above technical solution, the coolant enters through the inlet channel and then converges in the manifold groove, which helps to extend the residence time of the coolant at the end of the cap.
[0010] Preferably, the flow guiding structure includes a plurality of flow guiding channels, which are opened along the inner wall of the pressure cap and along its axial direction, and all of the flow guiding channels are connected to the liquid collection ring groove.
[0011] By adopting the above technical solution, due to the negative pressure airflow between the liquid inlet channel and the liquid storage channel, the coolant is moved and can be dispersed and moved into the guide channel to uniformly cool the inner wall of the pressure cap. At the same time, it is also convenient for the coolant to move evenly into the liquid collection ring groove.
[0012] Preferably, the flow guiding structure further includes a plurality of water guiding grooves, which are evenly opened along the inner wall of the pressure cap and in its radial direction, and the water guiding grooves are connected to the flow guiding channels one by one.
[0013] Preferably, the water guide channel is a waist-shaped channel.
[0014] By adopting the above technical solution and through the design of the waist-shaped water guide channel, the coolant will not directly short-circuit back when moving. Instead, the coolant is forced to move into the water guide channel and then enter the liquid collection ring groove along the guide channel.
[0015] Preferably, the rectangular base is further provided with a through hole, and the water guide groove and the liquid inlet channel are connected through the through hole.
[0016] By adopting the above technical solution, the coolant enters the inlet channel and passes through the through hole, so as to ensure that the coolant moves into the water guide tank, and to plan and limit the movement path of the coolant.
[0017] Preferably, the pressure cap is further provided with an abutment block, which is located between two adjacent water guide grooves. The abutment block abuts against the wall of the through hole, and the through hole is connected to both adjacent water guide grooves.
[0018] By adopting the above technical solution, after the rectangular seat and the pressure cap are connected, the abutting block abuts against the rectangular seat, and the through hole is connected to the adjacent water guide groove to ensure the connection of the coolant movement path.
[0019] In summary, this application includes at least one of the following beneficial technical effects:
[0020] 1. Through the design of the flow guiding structure, the coolant enters the rectangular seat through the inlet channel, and then the flow guiding structure directs the coolant to the end of the pressure cap to cool the end of the pressure cap. This helps to improve the compression density of the sub-plasma arc, thereby increasing the cutting energy of the plasma arc.
[0021] 2. By setting up the waist-shaped water guide channel, the coolant will not directly short-circuit back when moving. Instead, the coolant will be forced to move into the water guide channel and then enter the liquid collection ring groove along the guide channel. Attached Figure Description
[0022] Figure 1 This is a schematic diagram illustrating the overall structure of the plasma arc cutting torch in the embodiments of this application.
[0023] Figure 2 This is a schematic diagram illustrating the through hole in the embodiments of this application.
[0024] Figure 3 This is a schematic diagram illustrating the flow guiding structure in the embodiments of this application.
[0025] Explanation of reference numerals in the attached drawings: 1. Rectangular seat; 11. Liquid inlet channel; 12. Liquid outlet channel; 13. Through hole; 2. Pressure cap; 21. Nozzle; 22. Abutment block; 3. Flow guiding structure; 31. Water guide groove; 32. Flow guiding channel; 33. Liquid collection ring groove. Detailed Implementation
[0026] To make the inventive objectives, features, and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0027] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.
[0028] This application discloses a plasma arc cutting torch, such as... Figure 1 As shown, it includes a rectangular base 1 and a pressure cap 2, which are threaded together. The pressure cap 2 has a nozzle 21 at its end, through which the plasma arc is ejected.
[0029] like Figure 1 As shown, the rectangular seat 1 is provided with a liquid inlet channel 11 and a liquid outlet channel 12. When the cutting torch is working, coolant is introduced into the rectangular seat 1 through the liquid inlet channel 11. Under the guidance of the negative pressure airflow, the coolant cools the rectangular seat 1 and the pressure cap 2 and then moves out through the liquid outlet channel 12.
[0030] like Figure 2 and 3As shown, the flow guiding structure 3 includes several water guiding channels 31. These channels 31 are evenly distributed along the inner wall of the pressure cap 2 and radially. Each water guiding channel 31 is waist-shaped, and a contact block 22 is fixedly connected between every two adjacent channels 31. The contact block 22 is fixedly connected to the inner wall of the pressure cap 2. In this embodiment, five water guiding channels 31 are provided. To maintain communication between the water guiding channels 31 and the liquid inlet channel 11, a through hole 13 is provided on the rectangular base 1 near the pressure cap 2. The through hole 13 is waist-shaped, and a portion of the hole wall abuts against the contact block 22. Both adjacent water guiding channels 31 can communicate with the through hole 13.
[0031] like Figure 3 As shown, the flow guiding structure 3 also includes flow guiding channels 32 and liquid collecting ring grooves 33. Multiple flow guiding channels 32 are provided, extending along the inner wall of the pressure cap 2 and along its axial direction. In this embodiment, five flow guiding channels 32 are provided, and each flow guiding channel 32 is connected to a corresponding water guiding groove 31. The liquid collecting ring groove 33 is provided around the nozzle 21 on the inner wall of the pressure cap 2, and all flow guiding channels 32 are connected to the liquid collecting ring groove 33.
[0032] The coolant moves into the water guide groove 31 through the through hole 13, and then moves into the liquid collection ring groove 33 along the guide channel 32, so that the coolant can stay at the end of the pressure cap 2, thereby improving the cooling effect on the pressure cap 2.
[0033] The implementation principle of a plasma arc cutting torch in this application embodiment is as follows:
[0034] The coolant enters the rectangular seat 1 through the inlet channel 11, and then the movement path of the coolant is guided by the water guide groove 31 and the flow guide channel 32. The coolant is guided to the liquid collection ring groove 33 through the flow guide channel 32, and then the coolant is directed to the end of the pressure cap 2 to cool the end of the pressure cap 2. This helps to improve the compression density of the sub-plasma arc, thereby increasing the cutting energy of the plasma arc.
[0035] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A plasma arc cutting torch, characterized in that: Includes a rectangular seat (1) and a pressure cap (2). The rectangular seat (1) has an inlet channel (11) and an outlet channel (12). The pressure cap (2) is threadedly connected to the rectangular seat (1). The end of the pressure cap (2) has a nozzle (21). The pressure cap (2) has a flow guiding structure (3). The flow guiding structure (3) is connected to both the inlet channel (11) and the outlet channel (12). The flow guiding structure (3) is used to guide the coolant to the end of the pressure cap (2).
2. The plasma arc cutting torch according to claim 1, characterized in that: The flow guiding structure (3) includes a liquid collection ring groove (33), which is formed around the nozzle (21) on the inner wall of the pressure cap (2), and the liquid collection ring groove (33) is connected to the liquid inlet channel (11).
3. The plasma arc cutting torch according to claim 2, characterized in that: The flow guiding structure (3) includes several flow guiding channels (32), which are opened along the inner wall of the pressure cap (2) and along its axial direction. All of the flow guiding channels (32) are connected to the liquid collection ring groove (33).
4. The plasma arc cutting torch according to claim 3, characterized in that: The flow guiding structure (3) also includes a plurality of water guiding grooves (31), which are evenly opened along the inner wall of the pressure cap (2) and along its radial direction. The water guiding grooves (31) are connected to the flow guiding channels (32) one by one.
5. A plasma arc cutting torch according to claim 4, characterized in that: The water guide channel (31) is a waist-shaped channel.
6. The plasma arc cutting torch according to claim 4, characterized in that: The rectangular base (1) is also provided with a through hole (13), and the water guide groove (31) and the liquid inlet channel (11) are connected through the through hole (13).
7. A plasma arc cutting torch according to claim 6, characterized in that: The pressure cap (2) is also provided with an abutment block (22), which is located between two adjacent water guide channels (31). The abutment block (22) abuts against the wall of the through hole (13), and the through hole (13) is connected to both adjacent water guide channels (31).