CN2164941Y - Spiral-flow cooled high-power plasma cutting torch - Google Patents
Spiral-flow cooled high-power plasma cutting torch Download PDFInfo
- Publication number
- CN2164941Y CN2164941Y CN93221734U CN93221734U CN2164941Y CN 2164941 Y CN2164941 Y CN 2164941Y CN 93221734 U CN93221734 U CN 93221734U CN 93221734 U CN93221734 U CN 93221734U CN 2164941 Y CN2164941 Y CN 2164941Y
- Authority
- CN
- China
- Prior art keywords
- cutting torch
- plasma cutting
- outer tube
- negative electrode
- inner sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a rotational flow cooled plasma cutting torch with composite cathode structure. The utility model is characterized in that a cathode forms a bell shape, and cooling water forms rotational flow around the cathode. The lower end of a central tube is made into a return line forming a multiple thread shape, and the inner wall of a lower insulating ring is also made into a return line forming a multiple thread shape. Due to the novel composite cathode structure of the utility model, the cathode can not deform, the cooling condition of the cathode is improved, thus the service of the cutting torch is prolonged, and the loading capacity of the cutting torch is enhanced. The air plasma cutting torch of the utility model has a working voltage between 300V and 350V, arc current can reach to 1000 A, and a steel plate with the thickness of 200 mm can be cut.
Description
The utility model relates to a kind of plasma cutting torch, particularly relates to a kind of plasma cutting torch that is cooled off, had the composite cathode structure by eddy flow.
Domestic existing plasma cutting torch has common characteristics at present, and promptly the cathode construction form is basic identical, all is that the middle edge of lower end advances one section hafnium filament, and top is subjected to cooling (seeing accompanying drawing 1).Fig. 1 is the exemplary block diagram of present domestic existing plasma cutting torch negative electrode, and (1) is hafnium filament among the figure.Because cooling is bad, cathode construction is reasonable inadequately, makes the easy oxidation of hafnium filament, ablation, or, causing negative electrode and nozzle life not long because of distortion produces off-centre, arc current can't increase, but the thickness of cutting metal is limited, and cut quality and cutting efficiency can not further improve.
The purpose of this utility model is the shortcoming that overcomes existing plasma cutting torch, and the cooling of a kind of bispin stream, the powerful air plasma cutting torch with composite cathode structure are provided.
Be illustrated below in conjunction with accompanying drawing.
Structure of the present utility model as shown in Figure 2, its structure is:
Insert inner sleeve (6) in the major insulation part (12), in inner sleeve (6), insert central tube (8), negative electrode (5) is connected on the inner sleeve (6) with trim ring (3), inner sleeve (6) and central tube (8) are prevented to relatively rotate by stop screw (9), and major insulation part (12) is fastening with nut (14) with central tube (8).The combinations thereof part is inserted in the outer tube (7), screws with loam cake (19) by last dead ring (10) and last outer tube (11), thereby makes loam cake (19) and central tube (8) form excellent electric contact.Following dead ring (4) is loaded between outer tube (7) and the trim ring (3), and following outer tube (2) compresses nozzle (1) and following dead ring (4).Sealing ring (21), (23), (25) and (28) are placed on respectively between the part of cooling water process, be used to prevent that cooling water from leaking, sealing ring (22), (24), (26) and (27) are placed on respectively between the part of cooling water and compressed air process, then are used for isolating cooling water path and compressed air path.
Wherein: negative electrode (5) is done by copper, hollow, and end sealing, Open Side Down, is bell, buries dress hafnium filament or zirconium silk at bell sidewall.
The loop line of multiple thread shape is made in the lower end of central tube (8).
The inwall of following dead ring (4) is made the loop line of multiple thread shape.
Circuit is by connecing electroplax (18), and through central tube (8), inner sleeve (6) passes to negative electrode (5).
During work: cooling water is by suction nozzle (17), and through the duct of major insulation part (12) lining and the groove in the following outer tube (2), the cooling chamber on the flow nozzle (1) is got back to major insulation part (12) by opposite side then.Another group duct in major insulation part (12) enters inner sleeve (6), pass through the multiple thread loop line of central tube (8) lower end again around negative electrode (5), target (5) cools off, and by the endoporus of central tube (8), flows out through faucet (16) at last.
Compressed air through the duct of wireway (20) and major insulation part (12) lining, by means of the multiple thread loop line of following dead ring (4) inwall, forms eddy airstream by suction nozzle (17), is sprayed by nozzle (1).
Major insulation part of the present utility model (12), following dead ring (4) and last dead ring (10) are with nozzle (1), and following outer tube (2) and outer tube (7) are isolated with cathode circuit.Insulating part is made by insulating materials.Conductive pieces is made by red copper and brass respectively.Loam cake (19), water inlet tap (15), faucet (16), suction nozzle (17), wireway (20) and connect electroplax (18) is made by stainless steel.
Because the utility model has improved the cooling of negative electrode and nozzle well, negative electrode has adopted novel composite construction, has significantly reduced the oxidation and the ablation of cathode material, and the distortion of negative electrode and nozzle, makes negative electrode and nozzle can keep concentric all the time.Owing to strengthened the vortex of air-flow, promptly cooling off the current of negative electrode and the working air current of cooling jet and compression arc again, all is vortex flow, and the stability of arc is improved, and the ability of negative electrode loaded current and nozzle improve by the ability of arc stream.
Embodiment: for guaranteeing the duty of cutting torch, negative electrode and its shape of nozzle, size and their relative position are very important.In the present embodiment, 10 millimeters of bell negative electrode diameter of bores; 6 millimeters of nozzle diameters, long 8 millimeters of nozzle straight tube, the nozzle bell mouth angle is 60 °; Distance is 2.5 millimeters between bell negative electrode lower surface and the nozzle horn mouth upper surface.With the cutting torch of present embodiment shape, size, floating voltage ≮ 450 volt, operating voltage 300-350 volt, arc current can cut thick carbon steel or the corrosion resistant plate that reaches 200 millimeters up to 1000 amperes.
Description of drawings:
1-nozzle 11-goes up outer tube
Outer tube 12-major insulation part under the 2-
3-trim ring 13-packing ring
Dead ring 14-nut under the 4-
5-negative electrode 15-water inlet tap
6-inner sleeve 16-faucet
7-outer tube 17-suction nozzle
8-central tube 18-connects electroplax
9-stop screw 19-loam cake
The last dead ring 20-of 10-wireway
21 to 28-sealing rings
Claims (5)
1, a kind of by negative electrode, trim ring, central tube, inner sleeve, nozzle, outer tube, outer tube, loam cake, the high power plasma cutting torch of the eddy flow cooling that constitutes such as dead ring, major insulation part down down, it is characterized in that: insert inner sleeve (6) in the major insulation part (12), insert central tube (8) in the inner sleeve (6), negative electrode (5) is connected on the inner sleeve (6) with trim ring (3), with nut the fastening back of inner sleeve (6) and major insulation part (12) is inserted in the outer tube (7), screw with loam cake (19) by last dead ring (10) and last outer tube (11); Following dead ring (4) is contained between outer tube (7) and the trim ring (3), and following outer tube (2) compresses nozzle (1) and following dead ring (4); Sealing ring (21), (23), (25) and (28) are placed on respectively between the part of cooling water process; Sealing ring (22), (24), (26) and (27) are placed on respectively between the part of cooling water and compressed air process.
2, the high power plasma cutting torch of eddy flow cooling as claimed in claim 1, it is characterized in that: the negative electrode of being done by copper (5) is a hollow, end sealing, Open Side Down, becomes bell, buries the dress hafnium filament in bell sidewall.
3, the high power plasma cutting torch of eddy flow cooling as claimed in claim 1 is characterized in that: also can bury dress zirconium silk in the bell sidewall of negative electrode (5).
4, plasma cutting torch as claimed in claim 1 is characterized in that: the loop line of multiple thread shape is made in central tube (8) lower end.
5, plasma cutting torch as claimed in claim 1 is characterized in that: the inwall of following dead ring (4) is made the loop line of multiple thread shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93221734U CN2164941Y (en) | 1993-08-14 | 1993-08-14 | Spiral-flow cooled high-power plasma cutting torch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93221734U CN2164941Y (en) | 1993-08-14 | 1993-08-14 | Spiral-flow cooled high-power plasma cutting torch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2164941Y true CN2164941Y (en) | 1994-05-18 |
Family
ID=33800511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93221734U Expired - Fee Related CN2164941Y (en) | 1993-08-14 | 1993-08-14 | Spiral-flow cooled high-power plasma cutting torch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2164941Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102101218A (en) * | 2009-12-22 | 2011-06-22 | 深圳市大族激光科技股份有限公司 | Insulating ring, manufacturing method and laser cutter using insulating ring |
| CN107000106A (en) * | 2015-06-16 | 2017-08-01 | 黄元奎 | Water-cooled plasma torch |
-
1993
- 1993-08-14 CN CN93221734U patent/CN2164941Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102101218A (en) * | 2009-12-22 | 2011-06-22 | 深圳市大族激光科技股份有限公司 | Insulating ring, manufacturing method and laser cutter using insulating ring |
| CN102101218B (en) * | 2009-12-22 | 2014-06-18 | 深圳市大族激光科技股份有限公司 | Insulating ring, manufacturing method and laser cutter using insulating ring |
| CN107000106A (en) * | 2015-06-16 | 2017-08-01 | 黄元奎 | Water-cooled plasma torch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |