CN211490051U - Structure of plasma cutting torch protective gas flow - Google Patents
Structure of plasma cutting torch protective gas flow Download PDFInfo
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- CN211490051U CN211490051U CN201921851544.3U CN201921851544U CN211490051U CN 211490051 U CN211490051 U CN 211490051U CN 201921851544 U CN201921851544 U CN 201921851544U CN 211490051 U CN211490051 U CN 211490051U
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- gas
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Abstract
The utility model discloses a structure of plasma cutting torch protective gas flow, which comprises a cutting torch body and a nozzle sleeved at one end of the cutting torch body; an inner fixing cover for fixing the nozzle is arranged on the outer side of the cutting torch body; the nozzle is sleeved with a protective gas screen; a protective cap is arranged on the outer side of the nozzle; an outer fixing cover used for fixing the protective cap is arranged on the outer side of the inner fixing cover; the middle part of the cutting torch body is provided with an air inlet channel communicated with the nozzle. The utility model discloses the protection gas sieve has been set up, and there is the through-hole that a plurality of axes are not directional centre of a circle at the outer peripheral face of protection gas sieve along the circumference equipartition, protective gas is from the back that the internal fixation covers gas pocket flows, gas expansion, including the fixed cover outside, the gas storage intracavity misce bene that the external fixation covers inner wall formed, pass through the through-hole on the protection gas sieve circumference lateral wall again, form the one-way air current of the directional centre of a circle of stranded, this air current can be rotatory around the nozzle, rotatory air current has less turbulent flow and higher velocity of flow, reduce and splash, thereby service life has.
Description
Technical Field
The utility model belongs to the technical field of the cutting torch technique and specifically relates to a structure of plasma cutting torch shielding gas air current is related to.
Background
Plasma arc torches are widely used for cutting metallic materials and generally include a torch body, cutting consumables such as an electrode, a nozzle, a protective cap, and the like. Two gases, namely plasma gas and shielding gas, are needed during plasma cutting, and the plasma gas is used for compressing plasma arcs and improving the strength of the plasma arcs so as to cut plates; the protective gas is used for cooling the wearing parts (the nozzle and the protective cap) and blowing away splashes generated during cutting, so that the service life of the wearing parts is prolonged. In the prior art, the protective gas is directly sprayed between a nozzle and a protective cap through a pipeline in a cutting torch body and then is sprayed out from a gap between the nozzle and the protective cap, and because only one protective gas outlet is arranged on the cutting torch body, the protective gas is unevenly distributed between the nozzle and the protective cap, and the pressure and the speed after the protective gas is sprayed out from a circular gap between the nozzle and the protective cap are uneven. Causing some places to be particularly prone to sticking spatter, affecting cutting quality and cutting life.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a plasma cutting torch protective gas airflow structure aiming at the defects of the prior art.
Realize the utility model discloses the technical scheme of purpose is: a structure of plasma cutting torch shielding gas flow comprises a cutting torch body and a nozzle sleeved at one end of the cutting torch body; an inner fixing cover for fixing the nozzle is arranged on the outer side of the cutting torch body; the nozzle is sleeved with a protective gas screen; a protective cap is arranged on the outer side of the nozzle; an outer fixing cover used for fixing the protective cap is arranged on the outer side of the inner fixing cover; the middle part of the cutting torch body is provided with an air inlet channel communicated with the nozzle; a plurality of air outlet holes which penetrate through the cutting torch body and are communicated with the air inlet channel are uniformly distributed on the peripheral surface of the inner fixed cover; a gas storage cavity is formed among the inner fixing cover, the outer fixing cover, the protective cap and the protective gas screen; an air outlet channel is formed among the nozzle, the protective air sieve and the protective cap; and a plurality of through holes with axes not pointing to the circle center are uniformly distributed on the outer peripheral surface of the protective gas screen along the circumferential direction.
The outer wall of the nozzle is provided with a step for positioning the protective air screen.
The protective gas sieve is made of high polymer materials with high temperature resistance, low expansion coefficient and good insulation.
And a first sealing ring is arranged at the contact part of the nozzle and the inner fixing cover.
And a second sealing ring is arranged at the contact part of the outer fixing cover and the protective cap.
By adopting the technical scheme, the utility model discloses following beneficial effect has: (1) the utility model is provided with the protective gas sieve, and a plurality of through holes with axes not pointing to the circle center are evenly distributed on the outer peripheral surface of the protective gas sieve along the circumferential direction, the protective gas flows to the outer side of the inner fixed cover and the inner wall of the outer fixed cover to form a gas storage cavity through the gas inlet channel inside the cutting torch main body and the gas outlet hole on the circumference of the inner fixed cover, and then is injected to the gas outlet channel between the nozzle and the protective cap through the through holes on the protective gas sieve, and finally is sprayed out from the hole of the protective cap, after the protective gas flows out from the gas hole of the inner fixed cover, the gas expands, the gas is evenly mixed in the gas storage cavity formed by the inner side of the inner fixed cover and the inner wall of the outer fixed cover, and then passes through the through holes on the circumferential side wall of the protective gas sieve to form a plurality of unidirectional gas, and the nozzle and the protective cap are all wearing parts and need to be replaced frequently, and the protective gas screen can be separated from the nozzle and the protective cap and can be reused, so that the service life is prolonged, and the processing cost is reduced.
(2) The utility model discloses a be equipped with on the outer wall of nozzle be used for with the step of protection gas sieve location, the installation of the protection gas sieve of being convenient for.
(3) The utility model discloses a protection gas sieve is made by high temperature resistant, low coefficient of expansion, the good macromolecular material of insulating nature, guarantees its life.
(4) The utility model discloses set up first sealing washer, guaranteed the leakproofness between nozzle and the internal fixation cover.
(5) The utility model discloses set up the second sealing washer, guaranteed the leakproofness between external fixation cover and the protective cap.
Drawings
In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is given in conjunction with the accompanying drawings, in which
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the protective gas screen of the present invention.
Fig. 3 is a cross-sectional view of fig. 2.
The reference numbers in the drawings are:
the cutting torch comprises a cutting torch body 1, a nozzle 2, a step 2-1, an inner fixing cover 3, an air outlet 3-1, a protective air screen 4, a through hole 4-1, a protective cap 5, an outer fixing cover 6, an air storage cavity 7, an air outlet channel 8, a first sealing ring 9 and a second sealing ring 10.
Detailed Description
(example 1)
Referring to fig. 1 to 3, the structure of the plasma torch shielding gas flow of the present embodiment includes a torch body 1 and a nozzle 2 sleeved at one end of the torch body 1.
An inner fixing cover 3 for fixing the nozzle 2 is arranged on the outer side of the cutting torch body 1. The nozzle 2 is sleeved with a protective gas screen 4. The outside of the nozzle 2 is provided with a protective cap 5. The outer side of the inner fixing cover 3 is provided with an outer fixing cover 6 for fixing the protective cap 5. The middle part of the cutting torch body 1 is provided with an air inlet channel communicated with the nozzle 2. A plurality of air outlets 3-1 which penetrate through the cutting torch body 1 and are communicated with the air inlet channel are uniformly distributed on the peripheral surface of the inner fixed cover 3. An air storage cavity 7 is formed among the inner fixing cover 3, the outer fixing cover 6, the protective cap 5 and the protective air screen 4. An air outlet channel 8 is formed among the nozzle 2, the protective air screen 4 and the protective cap 5. The peripheral surface of the protective gas screen 4 is evenly distributed with a plurality of through holes 4-1 with axes not pointing to the circle center along the circumferential direction.
Furthermore, the outer wall of the nozzle 2 is provided with a step 2-1 for positioning the protective gas screen 4, so that the protective gas screen 4 can be positioned and installed.
Further, the shielding gas screen 4 is made of a high polymer material having high temperature resistance, a low expansion coefficient, and good insulation properties, and is preferably made of polyimide.
Further, a first sealing ring 9 is arranged at the contact part of the nozzle 2 and the inner fixing cover 3 to ensure the sealing performance between the nozzle 2 and the inner fixing cover 3.
Further, a second sealing ring 10 is provided at the contact portion of the outer fixing cover 6 and the protective cap 5 to ensure the sealing performance between the outer fixing cover 6 and the protective cap 5.
The embodiment is provided with the protective gas sieve 4, a plurality of through holes 4-1 with axes not pointing to the circle center are uniformly distributed on the peripheral surface of the protective gas sieve 4 along the circumferential direction, the protective gas flows to the outer side of the inner fixed cover 3 and the inner wall of the outer fixed cover 6 to form a gas storage cavity 7 through the gas inlet channel in the cutting torch main body 1 and the gas outlet holes 3-1 on the circumference of the inner fixed cover 3, then passes through the through holes on the protective gas sieve 4 to reach the gas outlet channel 8 between the nozzle 2 and the protective cap 5, and finally is sprayed out from the protective cap holes 5, after the protective gas flows out from the gas holes of the inner fixed cover 3, the gas expands, the gas is uniformly mixed in the gas storage cavity 7 formed on the outer side of the inner fixed cover 3 and the inner wall of the outer fixed cover 6, and then passes through the through holes 4-1 on the circumferential side wall of the protective gas sieve 4 to form a unidirectional, the splashing is reduced, so that the service life is ensured, the nozzle 2 and the protective cap 5 are both wearing parts and need to be replaced frequently, the protective air screen 4 can be separated from the nozzle 2 and the protective cap 5 and can be reused, the service life is prolonged, and the processing cost is reduced.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (5)
1. A structure of plasma cutting torch shielding gas flow is characterized in that: comprises a cutting torch body (1) and a nozzle (2) sleeved at one end of the cutting torch body (1); an inner fixing cover (3) for fixing the nozzle (2) is arranged on the outer side of the cutting torch body (1); the nozzle (2) is sleeved with a protective gas screen (4); a protective cap (5) is arranged on the outer side of the nozzle (2); an outer fixing cover (6) used for fixing the protective cap (5) is arranged on the outer side of the inner fixing cover (3); the middle part of the cutting torch body (1) is provided with an air inlet channel communicated with the nozzle (2); a plurality of air outlet holes (3-1) which penetrate through the cutting torch body (1) and are communicated with the air inlet channel are uniformly distributed on the peripheral surface of the inner fixed cover (3); a gas storage cavity (7) is formed among the inner fixing cover (3), the outer fixing cover (6), the protective cap (5) and the protective gas screen (4); an air outlet channel (8) is formed among the nozzle (2), the protective air screen (4) and the protective cap (5); the peripheral surface of the protective gas screen (4) is uniformly distributed with a plurality of through holes (4-1) with axes not pointing to the circle center along the circumferential direction.
2. The plasma torch as in claim 1, wherein said shield gas flow comprises: the outer wall of the nozzle (2) is provided with a step (2-1) for positioning the protective air screen (4).
3. The plasma torch as in claim 1, wherein said shield gas flow comprises: the protective gas sieve (4) is made of high-temperature-resistant and low-expansion-coefficient high polymer materials.
4. The plasma torch as in claim 1, wherein said shield gas flow comprises: and a first sealing ring (9) is arranged at the contact part of the nozzle (2) and the inner fixing cover (3).
5. The plasma torch as in claim 1, wherein said shield gas flow comprises: and a second sealing ring (10) is arranged at the contact part of the outer fixing cover (6) and the protective cap (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921851544.3U CN211490051U (en) | 2019-10-31 | 2019-10-31 | Structure of plasma cutting torch protective gas flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921851544.3U CN211490051U (en) | 2019-10-31 | 2019-10-31 | Structure of plasma cutting torch protective gas flow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211490051U true CN211490051U (en) | 2020-09-15 |
Family
ID=72408127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921851544.3U Active CN211490051U (en) | 2019-10-31 | 2019-10-31 | Structure of plasma cutting torch protective gas flow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211490051U (en) |
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2019
- 2019-10-31 CN CN201921851544.3U patent/CN211490051U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 213000 No.9, environmental protection Third Road, national environmental protection industrial park, Xinbei District, Changzhou City, Jiangsu Province Patentee after: Changzhou TELMA Technology Co.,Ltd. Address before: 213000 No.9, environmental protection Third Road, national environmental protection industrial park, Xinbei District, Changzhou City, Jiangsu Province Patentee before: TERMMEI TORCH & TIP Co. |
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| CP01 | Change in the name or title of a patent holder |