CN-224222937-U - Plasma arc cutting torch

CN224222937UCN 224222937 UCN224222937 UCN 224222937UCN-224222937-U

Abstract

The utility model discloses a plasma arc cutting torch, and belongs to the technical field of plasma. The novel water cooling device mainly comprises a jacket, a base, a protective cap, an electrode seat, a nozzle and an electrode, wherein the nozzle is arranged at the front end of the base, the electrode is arranged on the electrode seat and is close to the nozzle, the front end of the electrode extends to the inside of the nozzle, the protective cap is sleeved on the outer side of the nozzle, a central water pipe is communicated with the water inlet flow passage, one end of the central water pipe extends to an inner cavity of the electrode, an electrode cooling cavity communicated with the central water pipe is arranged between the outer wall of the central water pipe and the inner wall of the inner hole, a second cooling flow passage contacts the nozzle, a protective air cavity is arranged between the outer wall of the nozzle and the inner wall of the protective cap, a protective cap center hole aligned with the nozzle center hole of the nozzle is arranged at the end of the protective cap, the protective air cavity is communicated with the protective cap center hole, the electrode cooling cavity is communicated with the second cooling flow passage, and the water outlet flow passage is communicated with the second cooling flow passage. The plasma arc cutting torch can inhibit smoke emission.

Inventors

ZHANG HAITAO
ZHANG HAIBO
YANG GUANGQIAN
XIAO HAO

Assignees

无锡马斯克焊割设备有限公司

Dates

Publication Date: 20260512
Application Date: 20250609

Claims (10)

1. The plasma arc cutting torch is characterized by comprising a jacket, a base, a protective cap, an electrode seat, a nozzle and an electrode, wherein the base, the electrode seat, the nozzle and the electrode are all accommodated and installed in the jacket, the nozzle is installed at the front end of the base, the electrode is installed on the electrode seat and is close to the nozzle, the front end of the electrode extends to the inside of the nozzle, the protective cap is sleeved on the outer side of the nozzle, a water inlet flow passage and a water outlet flow passage are formed in the electrode seat, a central water pipe is communicated with the water inlet flow passage, one end of the central water pipe extends to an inner cavity of the electrode, a second cooling flow passage is arranged between the outer wall of the central water pipe and the inner wall of the inner hole, the second cooling flow passage contacts the nozzle, a protective air cavity is arranged between the outer wall of the nozzle and the inner wall of the protective cap, the end of the protective cap is provided with a protective cap center hole aligned with the nozzle center hole of the nozzle, the protective air cavity is communicated with the protective cap center hole, the second cooling cavity is communicated with the cooling flow passage, and the second cooling flow passage is communicated with the cooling flow passage, and the second cooling cavity is communicated with the cooling flow passage.
2. The plasma arc torch of claim 1 further comprising an insulating mount disposed between the electrode mount and the base.
3. The plasma arc cutting torch according to claim 1, wherein an annular nozzle cooling cavity is formed between the base and the outer wall of the nozzle at intervals, and the nozzle cooling cavity is communicated with the cooling flow passage II and the water outlet flow passage.
4. The plasma arc cutting torch according to claim 3, wherein the base is further provided with a third cooling flow passage which is spaced from the second cooling flow passage, the third cooling flow passage is communicated with the nozzle cooling cavity, a second distribution cavity is arranged between the outer wall of the base and the inner wall of the outer sleeve, the second distribution cavity is communicated with the protection air cavity, the outer wall of the base is provided with a second flow guide hole communicated between the second cooling flow passage and the second distribution cavity, and the outer wall of the base is further provided with a third flow guide hole communicated between the third cooling flow passage and the second distribution cavity.
5. The plasma arc cutting torch according to claim 4, further comprising a protection gas pipe for connecting the protection gas, wherein the base is provided with a protection gas flow passage communicated with the protection gas pipe, and the outer wall of the base is provided with a flow guide hole IV communicated between the protection gas flow passage and the second distribution cavity.
6. The plasma arc cutting torch according to claim 2, further comprising a plasma gas pipe for connecting an ion gas flow, wherein the electrode is sleeved with a flow distribution ring, an ion gas flow channel communicated with the plasma gas pipe is arranged on the base, a distribution cavity IV is arranged among the inner wall of the base, the outer wall of the insulating base and the outer wall of the flow distribution ring, an ion gas flow chamber is arranged among the inner wall of the flow distribution ring, the outer wall of the electrode and the inner wall of the nozzle, the distribution cavity IV is communicated with the ion gas flow chamber, and the ion gas flow chamber is communicated with the center hole of the nozzle.
7. The plasma arc cutting torch according to claim 6, wherein the flow distribution ring is provided with a plurality of homogenizing channels and vortex channels, the homogenizing channels are circumferentially spaced around the flow distribution ring, one end of the homogenizing channels, which is away from the nozzle, is communicated with the fourth distribution chamber, the flow distribution ring is provided with a plurality of vortex channels, and one end of the vortex channels, which is close to the nozzle, is communicated with the ion airflow chamber.
8. The plasma arc cutting torch according to claim 2, wherein a first cooling flow passage is arranged between the outer wall of the central water pipe and the inner wall of the electrode holder, the first cooling flow passage is communicated with the water inlet flow passage, a first distribution cavity is arranged between the inner wall of the insulating holder and the outer wall of the electrode holder, and the first distribution cavity is communicated between the first cooling flow passage and the second cooling flow passage.
9. The plasma arc torch according to claim 1, further comprising a water inlet pipe for introducing a coolant, and a water outlet pipe for returning the coolant, the water inlet pipe being connected to the electrode holder and communicating with the water inlet flow passage, the water outlet pipe being connected to the electrode holder and communicating with the water outlet flow passage.
10. The plasma arc cutting torch according to claim 6, wherein one end of the flow distribution ring is abutted against the insulating base, and the other end of the flow distribution ring is abutted against a stepped surface of the inner wall of the nozzle.

Description

Plasma arc cutting torch Technical Field The utility model relates to the technical field of plasma, in particular to a plasma arc cutting torch. Background The plasma arc cutting is to make the mixed gas pass through a high-frequency arc, wherein the gas can be air or the mixed gas of hydrogen, argon and nitrogen, and the high-frequency arc can make some gases be decomposed or ionized into basic atomic particles so as to generate plasma, then the arc jumps to the workpiece, and the high-pressure gas blows the plasma out of the cutting torch nozzle. In this way, the high energy released when the various gases in the plasma are restored to the normal state is combined to generate high temperature, so that the part of the workpiece to be cut is quickly melted, and the melted metal is blown away by the ejected high-pressure air flow. A plasma arc torch is a device that generates a plasma arc in plasma arc cutting. The existing plasma arc cutting torch often generates a large amount of smoke dust during combustion because of insufficient combustion of a workpiece or impure gas used for the plasma arc cutting torch, and the random emission of the smoke dust can cause harm to human bodies and does not accord with the environment-friendly concept. It is therefore necessary to provide a new plasma arc torch. Disclosure of utility model Based on the above problems in the prior art, an object of an embodiment of the present utility model is to provide a plasma arc torch capable of suppressing smoke emission. The plasma arc cutting torch comprises an outer sleeve, a base, a protective cap, an electrode seat, a nozzle and an electrode, wherein the base, the electrode seat, the nozzle and the electrode are all accommodated and installed in the outer sleeve, the nozzle is installed at the front end of the base, the electrode is installed on the electrode seat and is close to the nozzle, the front end of the electrode extends to the inside of the nozzle, the protective cap is sleeved on the outer side of the nozzle, a water inlet runner and a water outlet runner are formed in the electrode seat, a central water pipe is communicated with the water inlet runner, one end of the central water pipe extends into an inner cavity of the electrode, an electrode cooling cavity communicated with the central water pipe is formed between the outer wall of the central water pipe and the inner wall of the inner hole, a cooling runner II is arranged on the base, the cooling runner II contacts the nozzle, a protective air cavity is arranged between the outer wall of the nozzle and the inner wall of the protective cap, the end of the protective cap is provided with a protective cap center hole aligned with the nozzle center hole of the nozzle, the protective air cavity is communicated with the protective cap center hole, the electrode cooling cavity is communicated with the cooling runner II, and the cooling runner II is communicated with the cooling air cavity. Further, the plasma arc cutting torch further comprises an insulating seat, and the insulating seat is arranged between the electrode seat and the base. Furthermore, an annular nozzle cooling cavity is formed between the base and the outer wall of the nozzle at intervals, and the nozzle cooling cavity is communicated with the cooling flow passage II and the water outlet flow passage. Further, a cooling flow channel III which is spaced from the cooling flow channel II is further arranged on the base, the cooling flow channel III is communicated with the nozzle cooling cavity, a distribution cavity II is arranged between the outer wall of the base and the inner wall of the outer sleeve, the distribution cavity II is communicated with the protection air cavity, a flow guide hole II which is communicated between the cooling flow channel II and the distribution cavity II is arranged on the outer wall of the base, and a flow guide hole III which is communicated between the cooling flow channel III and the distribution cavity II is also arranged on the outer wall of the base. Further, the plasma arc cutting torch further comprises a protection air pipe for accessing protection air, a protection air flow passage communicated with the protection air pipe is arranged on the base, and a diversion hole IV communicated between the protection air flow passage and the second distribution cavity is arranged on the outer wall of the base. Further, the plasma arc cutting torch further comprises a plasma air pipe for accessing an ion air flow, the electrode is sleeved with a flow distribution ring, an ion air flow channel communicated with the plasma air pipe is arranged on the base, a distribution cavity IV is arranged among the inner wall of the base, the outer wall of the insulating base and the outer wall of the flow distribution ring, an ion air flow chamber is arranged among the inner wall of the flow distribution ring, the outer wall of the electrode and the inner wall of the nozzle, the distr