Direct current arc plasma torch

Abstract

This invention provides a DC arc plasma torch, including a cathode cooling jacket. The bottom end of the cathode cooling jacket is connected to an anode cooling jacket that communicates with its interior. A nozzle is threadedly connected to the bottom end of the anode cooling jacket. An extension sleeve is threadedly connected to the top end of the cathode cooling jacket. A connecting cylinder, communicating with the interior of the cathode cooling jacket, is threadedly connected to the top end of the extension sleeve. A connecting block is installed at the center of the connecting cylinder. This invention, through the arrangement of the extension sleeve, extension rod, and first gas guide cylinder, allows for the installation of extension sleeves of different lengths between the connecting cylinder and the cathode cooling jacket according to the application scenario. This enables adjustment of the torch's body length, facilitating flexible changes based on different application scenarios and customer needs. This improves the versatility of the DC arc plasma torch and avoids the need to purchase multiple torches of different body lengths due to changing application scenarios, thereby effectively reducing operating costs.

Description

Technical Field

[0001] This utility model relates to the field of plasma torch technology, and more specifically, to a DC arc plasma torch. Background Technology

[0002] A DC arc plasma torch is a device that uses a DC arc to generate high-temperature plasma. Its core principle is to ionize the gas by adjusting the current, gas type or flow rate, and nozzle structure to form a high-energy-density plasma jet. The jet temperature far exceeds that of traditional flames, capable of melting or vaporizing high-melting-point materials. It is widely used in high-temperature industrial fields such as materials processing, waste treatment, and syngas production.

[0003] Existing DC arc plasma torches have non-adjustable lengths, making them difficult to adapt to different working distances or customized customer needs. Furthermore, they require multiple independent cooling water circuits for the cathode and anode, which can easily lead to leakage risks. Therefore, this invention proposes a novel solution. Utility Model Content

[0004] The purpose of this invention is to solve the problems of existing DC arc plasma torches, which have non-adjustable gun body lengths, making it difficult to adapt to different working distances or customer customization needs, and require multiple independent cooling water circuits for the cathode and anode, which are cumbersome and prone to leakage risks. Therefore, this invention proposes a DC arc plasma torch.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A DC arc plasma torch was used to improve the above problems.

[0007] The present invention is as follows:

[0008] The device includes a cathode cooling jacket, an anode cooling jacket connected to its bottom end, a nozzle threadedly connected to the bottom end of the anode cooling jacket, an extension sleeve threadedly connected to the top end of the cathode cooling jacket, a connecting cylinder connected to the interior of the cathode cooling jacket threadedly to the top end of the extension sleeve, a connecting block installed at the center of the connecting cylinder, a hollow first connecting rod threadedly installed through the center of the connecting block, an inlet pipe threadedly connected to the top end of the first connecting rod, and the first connecting rod communicating with the connecting cylinder through the connecting block. A first gas guide cylinder is fixedly installed inside the extension sleeve. An extension rod threadedly connected to the first connecting rod is installed through the center of the first gas guide tube. A second gas guide tube communicating with the first gas guide tube is fixedly installed inside the cathode cooling sleeve. A second connecting rod threadedly connected to the extension rod is installed through the center of the second gas guide tube. Multiple gas connectors communicating with the interior of the first gas guide tube are fixedly installed at the top of the connecting block. A cathode is threadedly connected to the bottom end of the second connecting rod. An anode located outside the cathode is installed inside the anode cooling sleeve. Multiple drain pipes for discharging coolant are installed on the outer wall of the connecting tube.

[0009] As a preferred technical solution of this utility model, the ends of the extension sleeve and the cathode cooling sleeve are provided with multiple coolant inlet passages and coolant outlet passages arranged in a ring, and the coolant inlet passages are located inside the coolant outlet passages.

[0010] As a preferred technical solution of this utility model, the bottom end of the connecting cylinder is provided with a plurality of input channels that cooperate with the coolant input passage, and a collection chamber is provided on the outside of the input channel at the bottom end of the connecting cylinder, and the drain pipe is connected to the interior of the collection chamber.

[0011] As a preferred technical solution of this utility model, the anode cooling jacket has multiple connecting channels inside for connecting the coolant input passage and the coolant output passage, and the connecting channels are U-shaped.

[0012] As a preferred technical solution of this utility model, the side wall of the connecting block is provided with a liquid channel that cooperates with the input channel, and the first connecting rod is provided with a plurality of liquid outlet holes that cooperate with the liquid channel.

[0013] As a preferred technical solution of this utility model, the ends of the first gas guide tube and the second gas guide tube are provided with multiple gas channels, and the top of the connecting tube is provided with multiple air inlet slots that cooperate with the gas channels. The positions of the air inlet slots correspond to the positions of the gas connectors.

[0014] As a preferred technical solution of this utility model, a sealing gasket is provided at the connection between the cathode cooling jacket and the anode cooling jacket, and a through hole is provided on the sealing gasket to cooperate with the gas channel, the coolant inlet passage and the coolant outlet passage.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] In the solution of this utility model:

[0017] 1. By setting up the extension sleeve, extension rod and first gas guide tube, extension sleeves of different lengths can be installed between the connecting tube and the cathode cooling sleeve according to the usage scenario, thereby adjusting the length of the DC arc plasma torch. This allows for flexible changes according to different application scenarios and customer needs, improving the versatility of the DC arc plasma torch and avoiding the need to purchase DC arc plasma torches of various lengths due to changes in scenarios, thus effectively reducing usage costs.

[0018] 2. By setting up a connecting cylinder, a connecting block, a cathode cooling jacket, an anode cooling jacket, and a drain pipe, the coolant can enter the interior of the connecting cylinder through the inlet pipe, the first connecting rod, and the connecting block during use. Then, it enters the interior of the extension sleeve, the cathode cooling jacket, and the anode cooling jacket through the connecting cylinder to simultaneously cool the cathode and anode inside the cathode and anode cooling jackets. After cooling, the coolant is discharged through the drain pipe on the outer wall of the connecting cylinder. There is no need to equip the cathode and anode with separate cooling water circuits, which reduces the use of a large number of connecting parts. At the same time, it can also reduce the risk of water leakage caused by component aging and loosening, improve the overall reliability and stability, and the simplified water circuit is easy to install, maintain, and repair, saving manpower and time costs. Attached Figure Description

[0019] Figure 1 A schematic diagram of the overall structure of the DC arc plasma torch provided by this utility model;

[0020] Figure 2 A schematic diagram of the internal structure of the extension sleeve of the DC arc plasma torch provided by this utility model;

[0021] Figure 3 A schematic diagram of the internal structure of the cathode cooling jacket of the DC arc plasma torch provided by this utility model;

[0022] Figure 4 A schematic diagram of the connecting cylinder structure of the DC arc plasma torch provided by this utility model;

[0023] Figure 5 A schematic diagram of the connecting block structure of the DC arc plasma torch provided by this utility model;

[0024] Figure 6 A top view of the DC arc plasma torch provided by this utility model;

[0025] Figure 7 The front view of the DC arc plasma torch provided by this utility model.

[0026] The image shows:

[0027] 1. Extension sleeve; 2. Cathode cooling sleeve; 3. Anode cooling sleeve; 4. Nozzle; 5. Connecting cylinder; 6. Liquid inlet pipe; 7. First connecting rod; 8. Extension rod; 9. First gas guide cylinder; 10. Gas channel; 11. Coolant input passage; 12. Coolant output passage; 13. Second connecting rod; 14. Cathode; 15. Anode; 16. Connecting channel; 17. Sealing gasket; 18. Second gas guide cylinder; 19. Drain pipe; 20. Connecting block; 21. Liquid channel; 22. Collection chamber; 23. Input channel; 24. Air inlet channel; 25. Liquid outlet; 26. Gas connector. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0029] like Figures 1-7As shown, this embodiment proposes a DC arc plasma torch, including a cathode cooling sleeve 2. The bottom end of the cathode cooling sleeve 2 is connected to an anode cooling sleeve 3, which communicates with the interior of the anode cooling sleeve 3. A nozzle 4 is threadedly connected to the bottom end of the anode cooling sleeve 3. An extension sleeve 1 is threadedly connected to the top end of the cathode cooling sleeve 2. A connecting cylinder 5, which communicates with the interior of the cathode cooling sleeve 2, is threadedly connected to the top end of the extension sleeve 1. A connecting block 20 is installed at the center of the connecting cylinder 5. A hollow first connecting rod 7 is installed through the center of the connecting block 20. A liquid inlet pipe 6 is threadedly connected to the top end of the first connecting rod 7. The first connecting rod 7 communicates with the connecting cylinder 5 through the connecting block 20. The interior of the extension sleeve 1 is solid... A first gas guide tube 9 is fixedly installed, and an extension rod 8 threadedly connected to a first connecting rod 7 is installed through the center of the first gas guide tube 9. A second gas guide tube 18, which communicates with the first gas guide tube 9, is fixedly installed inside the cathode cooling sleeve 2. A second connecting rod 13 threadedly connected to the extension rod 8 is installed through the center of the second gas guide tube 18. Multiple gas connectors 26, which communicate with the interior of the first gas guide tube 9, are fixedly installed at the top of the connecting block 20. A cathode 14 is threadedly connected to the bottom end of the second connecting rod 13. An anode 15 located outside the cathode 14 is installed inside the anode cooling sleeve 3. Multiple gas connectors 26 are installed on the outer wall of the connecting tube 5. The drain pipe 19 for discharging coolant, through the setting of the extension sleeve 1, extension rod 8, and first gas guide tube 9, allows for the installation of extension sleeves 1 of different lengths between the connecting tube 5 and the cathode cooling sleeve 2 according to the usage scenario. This enables adjustment of the gun body length of the DC arc plasma torch, facilitating flexible changes according to different application scenarios and customer needs. This improves the versatility of the DC arc plasma torch and avoids the need to purchase DC arc plasma torches of various gun body lengths due to changes in scenarios, thereby effectively reducing operating costs. By setting up the connecting tube 5, connecting block 20, cathode cooling sleeve 2, anode cooling sleeve 3, and drain pipe 19, coolant can flow through during use. The coolant enters the interior of the connecting cylinder 5 through the inlet pipe 6, the first connecting rod 7, and the connecting block 20, and then enters the interior of the extension sleeve 1, the cathode cooling sleeve 2, and the anode cooling sleeve 3 through the connecting cylinder 5 to simultaneously cool the cathode 14 and anode 15 inside the cathode cooling sleeve 2 and the anode cooling sleeve 3. After cooling, the coolant is discharged through the drain pipe 19 on the outer wall of the connecting cylinder 5. There is no need to equip the cathode 14 and anode 15 with separate cooling water circuits, which reduces the use of a large number of connecting parts. At the same time, it can also reduce the risk of water leakage caused by component aging and loosening, improve the overall reliability and stability, and the simplified water circuit is easy to install, maintain and repair, saving manpower and time costs.

[0030] like Figure 2 , Figure 3 and Figure 5As shown, in a preferred embodiment, based on the above method, the ends of both the extension sleeve 1 and the cathode cooling sleeve 2 are provided with multiple annularly distributed coolant inlet passages 11 and coolant outlet passages 12. The coolant inlet passages 11 are located inside the coolant outlet passages 12. The bottom end of the connecting cylinder 5 is provided with multiple inlet channels 23 that cooperate with the coolant inlet passages 11. The outer side of the inlet channels 23 is provided with a collecting chamber 22 located at the bottom end of the connecting cylinder 5. The drain pipe 19 is interconnected with the interior of the collecting chamber 22. The interior of the anode cooling sleeve 3 is provided with multiple connecting channels 16 for connecting the coolant inlet passages 11 and the coolant outlet passages 12. The connecting channels 16 have a U-shaped structure. It should be noted that the side wall of the connecting block 20 is provided with a liquid channel 21 that cooperates with the inlet channel 23, and the first connecting rod 7 is provided with multiple outlet holes 25 that cooperate with the liquid channel 21. It should be noted that during use, the coolant is delivered into the interior of the first connecting rod 7 through the inlet pipe 6, and then enters the input channel 23 inside the connecting cylinder 5 through the outlet hole 25 on the first connecting rod 7 and the liquid channel 21 on the connecting block 20. Then, it enters the coolant input passage 11 inside the extension sleeve 1 and the cathode cooling sleeve 2 through the input channel 23. The coolant in the coolant input passage 11 enters the connecting channel 16 inside the anode cooling sleeve 3, and then is delivered to the interior of the coolant output passage 12 through the connecting channel 16. Finally, it is collected inside the collection chamber 22 and discharged through multiple drain pipes 19. When the coolant flows through the cathode cooling sleeve 2 and the anode cooling sleeve 3, it cools the cathode 14 and anode 15 inside the cathode cooling sleeve 2 and the anode cooling sleeve 3.

[0031] like Figure 2 , Figure 3 and Figure 5 As shown, in a preferred embodiment, based on the above method, the ends of both the first gas guide tube 9 and the second gas guide tube 18 are provided with multiple gas channels 10, and the top of the connecting tube 5 is provided with multiple air inlet slots 24 that cooperate with the gas channels 10. The positions of the air inlet slots 24 correspond to the positions of the gas connectors 26. It should be noted that during use, the gas pipe is connected to the gas connector 26. During operation, the gas is delivered into the interior of the gas channel 10 through the gas connector 26 and the air inlet slots 24, and then passes between the cathode 14 and the anode 15 before being discharged through the nozzle 4.

[0032] like Figure 1 and Figure 3As shown, in a preferred embodiment, based on the above method, a sealing gasket 17 is further provided at the connection between the cathode cooling jacket 2 and the anode cooling jacket 3. The sealing gasket 17 has through holes that cooperate with the gas channel 10, the coolant inlet passage 11, and the coolant outlet passage 12. It should be noted that the sealing gasket 17 improves the sealing performance between the cathode cooling jacket 2 and the anode cooling jacket 3, and the through holes facilitate the use of the gas channel 10, the coolant inlet passage 11, and the coolant outlet passage 12.

[0033] Specifically, the working principle of this DC arc plasma torch is as follows: During use, extension sleeves 1 of different lengths can be installed between the connecting cylinder 5 and the cathode cooling sleeve 2 according to the usage scenario, thereby adjusting the length of the DC arc plasma torch body. This allows for flexible changes based on different application scenarios and customer needs. During use, coolant is delivered into the interior of the first connecting rod 7 through the inlet pipe 6, and then enters the input channel 23 inside the connecting cylinder 5 through the outlet hole 25 on the first connecting rod 7 and the liquid channel 21 on the connecting block 20. Then, it enters the coolant input passage 11 inside the extension sleeve 1 and the cathode cooling sleeve 2 through the input channel 23. The coolant in the coolant input passage 11 enters the connecting channel 16 inside the anode cooling sleeve 3, and then is delivered to the interior of the coolant output passage 12 through the connecting channel 16. Finally, it is collected inside the collection chamber 22 and discharged through multiple drain pipes 19. When the coolant flows through the cathode cooling sleeve 2 and the anode cooling sleeve 3, it cools the cathode 14 and anode 15 inside the cathode cooling sleeve 2 and the anode cooling sleeve 3.

[0034] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present utility model, and all technical solutions and improvements that do not depart from the spirit and scope of the invention, are covered within the scope of the claims of the present utility model.

Claims

1. A DC arc plasma torch, characterized in that, The device includes a cathode cooling jacket (2), with an anode cooling jacket (3) connected to its bottom end and communicating with its interior. A nozzle (4) is threaded to the bottom end of the anode cooling jacket (3). An extension sleeve (1) is threaded to the top end of the cathode cooling jacket (2). A connecting cylinder (5) communicating with the interior of the cathode cooling jacket (2) is threaded to the top end of the extension sleeve (1). A connecting block (20) is installed at the center of the connecting cylinder (5). A hollow first connecting rod (7) is installed through the center of the connecting block (20). A liquid inlet pipe (6) is threaded to the top end of the first connecting rod (7). The first connecting rod (7) communicates with the connecting cylinder (5) through the connecting block (20). A first gas guide cylinder (9) is fixedly installed inside the extension sleeve (1). An extension rod (8) threadedly connected to the first connecting rod (7) is installed through the center of the first gas guide tube (9). A second gas guide tube (18) communicating with the first gas guide tube (9) is fixedly installed inside the cathode cooling sleeve (2). A second connecting rod (13) threadedly connected to the extension rod (8) is installed through the center of the second gas guide tube (18). A plurality of gas connectors (26) communicating with the interior of the first gas guide tube (9) are fixedly installed at the top of the connecting block (20). A cathode (14) is threadedly connected to the bottom end of the second connecting rod (13). An anode (15) located outside the cathode (14) is installed inside the anode cooling sleeve (3). A plurality of drain pipes (19) for discharging coolant are installed on the outer wall of the connecting tube (5).

2. The DC arc plasma torch according to claim 1, characterized in that, The ends of the extension sleeve (1) and the cathode cooling sleeve (2) are provided with multiple ring-shaped coolant inlet passages (11) and coolant outlet passages (12), with the coolant inlet passages (11) located inside the coolant outlet passages (12).

3. The DC arc plasma torch according to claim 2, characterized in that, The bottom end of the connecting cylinder (5) is provided with multiple input channels (23) that cooperate with the coolant input passage (11). The outside of the input channel (23) is provided with a collection chamber (22) opened at the bottom end of the connecting cylinder (5). The drain pipe (19) is connected to the inside of the collection chamber (22).

4. The DC arc plasma torch according to claim 3, characterized in that, The anode cooling jacket (3) has multiple connecting channels (16) inside for connecting the coolant input passage (11) and the coolant output passage (12), and the connecting channels (16) are U-shaped.

5. The DC arc plasma torch according to claim 4, characterized in that, The side wall of the connecting block (20) is provided with a liquid channel (21) that cooperates with the input channel (23), and the first connecting rod (7) is provided with a plurality of liquid outlet holes (25) that cooperate with the liquid channel (21).

6. The DC arc plasma torch according to claim 5, characterized in that, The ends of the first gas guide tube (9) and the second gas guide tube (18) are provided with multiple gas channels (10). The top of the connecting tube (5) is provided with multiple air inlet slots (24) that cooperate with the gas channels (10). The positions of the air inlet slots (24) correspond to the positions of the gas connectors (26).

7. The DC arc plasma torch according to claim 6, characterized in that, A sealing gasket (17) is provided at the connection between the cathode cooling sleeve (2) and the anode cooling sleeve (3). The sealing gasket (17) has a through hole that cooperates with the gas channel (10), the coolant inlet passage (11) and the coolant outlet passage (12).

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