CN204039481U - The plasma spray gun of nano coating screw rod - Google Patents
The plasma spray gun of nano coating screw rod Download PDFInfo
- Publication number
- CN204039481U CN204039481U CN201420338054.4U CN201420338054U CN204039481U CN 204039481 U CN204039481 U CN 204039481U CN 201420338054 U CN201420338054 U CN 201420338054U CN 204039481 U CN204039481 U CN 204039481U
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- nozzle
- jet
- negative electrode
- rifle shell
- spray gun
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Abstract
The purpose of this utility model is to provide a kind of plasma spray gun of nano coating screw rod, comprise cathode carrier, negative electrode, isolator, rifle shell, described rifle shell right-hand member is provided with first jet, the centre of first jet is provided with nozzle bore, the top of described negative electrode is suspended from nozzle bore, air cavity is provided with between the left end of negative electrode and isolator, air cavity is communicated with the first gas feed be positioned on rifle shell, described cathode carrier and cathode center are provided with the first cooling-water duct communicated with outside, the right-hand member of described first jet is provided with second nozzle, the blast tube of described second nozzle is that Lavalle is tubular, second nozzle is provided with independently the second cooling-water duct, second gas feed identical with blast tube, described second nozzle top is provided with powder conveying pipe, powder feeding tube wall offers powder channel.By adopting twin nipple, two interior cooling line, two gas piping, effectively can improve the speed of plasma jet, ensureing the heat content of plasma jet.
Description
Technical field
The utility model relates to plasma spraying field, is specifically related to a kind of plasma spray gun of nano coating screw rod.
Background technology
Along with the development of Materials science, the requirement of microstructure of plasma sprayed is more and more higher, and plasma spraying high-power is wherein a kind of development trend, and its key is the high-power of plasma gun.Plasma gun power is too low, can not spray the material compared with infusibility.As pottery, nanometer materials etc., but the power of isoionic spray gun is large, and its cooling is more and more difficult, and the heat taken away in process of cooling is more, and the utilization ratio of heat energy is lower, and the flame stream of plasma spray gun is subsonic speed in addition, the booster action of impact spraying powder.
Utility model content
For above-mentioned the deficiencies in the prior art, provide a kind of plasma spray gun of powerful nano coating screw rod, by arranging two nozzles, first nozzle specializes in striking use, and plasma arc is subject to first time compression at this; The employing Lavalle cylinder structure of second nozzle, introduces swirl flow gas by ceramic cyclone ring, and cause the negative pressure pointing to channel center, plasma arc compresses further, makes flame passes Flow Velocity reach supersonic speed, and the flame stream of outlet is uniform DC; By adopting two cooling water channel, anticathode and two nozzles cool respectively, by regulating the flow of two-way water coolant, thus the heat that controlled cooling model water-band is walked, effectively ensure the heat content of plasma arc, improve energy utilization rate.
The purpose of this utility model is to provide a kind of plasma spray gun of nano coating screw rod, comprise cathode carrier, cathode carrier top is provided with negative electrode, be positioned at the isolator of cathode carrier outside, be positioned at the rifle shell of isolator outside, be positioned at rifle shell left end, rear pressing cover together with rifle shell and cathode carrier are fixed with isolator, described rifle shell right-hand member is provided with first jet, the centre of first jet is provided with nozzle bore, the left end of described nozzle bore is horn-like, right-hand member cylindrically, the top of described negative electrode is suspended from nozzle bore, air cavity is provided with between the left end of negative electrode and isolator, air cavity is communicated with the first gas feed be positioned on rifle shell, described cathode carrier and cathode center are provided with the first cooling-water duct communicated with outside, the right-hand member of described first jet is provided with second nozzle, the blast tube of described second nozzle is that Lavalle is tubular, second nozzle is provided with independently the second cooling-water duct, second gas feed identical with blast tube, described second nozzle top is provided with powder conveying pipe, powder feeding tube wall offers powder channel, described second nozzle is connected with first jet and rifle shell by front gland.
Further improvement of the utility model is: the described blast tube position corresponding with nozzle bore is provided with ceramic cyclone ring, and ceramic cyclone ring is provided with intake opening.
Further improvement of the utility model is: the right top of described first jet is provided with circular, screwed recessed groove, the inwall of ceramic cyclone ring is provided with the screw thread be connected that to match with recessed groove; One end of described ceramic cyclone ring is by being screwed in first jet, and the other end holds out against the left end with blast tube.
Further improvement of the utility model is: described powder conveying pipe is fixedly connected with by screw thread rotation with between second nozzle, and described powder conveying pipe is detachable.
Further improvement of the utility model is: described blast tube, nozzle bore on same medullary ray.
The beneficial effects of the utility model: by arranging two nozzles, first nozzle specializes in striking use, plasma arc is subject to first time compression at this; The employing Lavalle cylinder structure of second nozzle, swirl flow gas is introduced by ceramic cyclone ring, cause the negative pressure pointing to channel center, plasma arc compresses further, flame passes Flow Velocity is made to reach supersonic speed, the flame stream of outlet is uniform DC, and anode spot is fallen within cool most ideal position, effectively can prevent the scaling loss of negative electrode; By adopting two inner cooling water road, anticathode and two nozzles cool respectively, by regulating the flow of two-way water coolant, thus the heat that controlled cooling model water-band is walked, the heat content of effective guarantee plasma arc, improves energy utilization rate, and two interior water-cooled can the optimized electronic emission rate of effective control cathode, prevent negative electrode overheated and accelerate scaling loss, extending the work-ing life of spray gun.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
In order to deepen understanding of the present utility model, below in conjunction with embodiment, the utility model is described in further detail, and this embodiment, only for explaining the utility model, does not form the restriction to the utility model protection domain.
As shown in Figure 1, present embodiments provide a kind of plasma spray gun of nano coating screw rod, comprise cathode carrier 1, cathode carrier 1 top is provided with negative electrode 2, be positioned at the isolator 3 of cathode carrier 1 outside, be positioned at the rifle shell 4 of isolator 3 outside, be positioned at rifle shell 4 left end, rifle shell 4 and cathode carrier 1 is fixing with isolator 3 together with rear pressing cover 5, described rifle shell 4 is stepped with the fixing end face of cathode carrier 1 and isolator 3, is convenient to rear pressing cover 5 and is fixed; Described rifle shell 4 right-hand member is provided with first jet 6, the centre of first jet 6 is provided with nozzle bore 7, the left end of described nozzle bore 7 be horn-like, right-hand member cylindrically, the top of described negative electrode 2 is suspended from nozzle bore 7, be convenient to be provided with air cavity 8 between the left end of ionic current negative electrode 2 and isolator, air cavity 8 is communicated with the first gas feed 9 be positioned on rifle shell 4, argon gas is admitted between negative electrode and first jet 6 by the first gas feed 9, carry out high-frequency arc strike, electric arc carries first jet 6 outside by argon gas, arrives in second nozzle 11.Described cathode carrier 1 and negative electrode 2 center are provided with the first cooling-water duct 10, first cooling-water duct 10 communicated with outside and flow in negative electrode 2 from the right-hand member inside of cathode carrier 1, and flow out at negative electrode 2 end, anticathode and first jet cool.The right-hand member of described first jet 6 is provided with second nozzle 11, the blast tube 12 of described second nozzle 11 is that Lavalle is tubular, second nozzle 11 is provided with independently the second cooling-water duct 13, second gas feed 14 identical with blast tube 12, second cooling-water duct 13 pairs second nozzle 11 cools, nitrogen is sent in second gas feed 14, described second nozzle 11 top is provided with powder conveying pipe 15, powder conveying pipe 15 wall offers powder channel 16, for sending into dusty spray, described second nozzle 11 is connected with first jet 6 and rifle shell 4 by front gland 17.Described blast tube 12 position corresponding with nozzle bore 7 is provided with ceramic cyclone ring 18, ceramic cyclone ring 18 is provided with four tangential intake openings.The described right top of first jet 6 is provided with circular, screwed recessed groove 19, the inwall of ceramic cyclone ring 18 is provided with the screw thread be connected that to match with recessed groove 19; One end of described ceramic cyclone ring 18 is by being screwed in first jet 6, the other end holds out against the left end with blast tube 12, make to form air-flow cabin between ceramic cyclone ring 18 and blast tube, the nitrogen rotated into makes plasma arc be compressed further, reduce the power loss of plasma arc, improve spray gun thermo-efficiency.Described powder conveying pipe 15 is fixedly connected with by screw thread rotation with between second nozzle 11, and described powder conveying pipe 15 is detachable.Described blast tube 12, nozzle bore 7 on same medullary ray, effective guarantee plasma flame flow uniform DC.
The principle of work of the present embodiment is: argon gas is admitted between negative electrode and first jet by the first gas feed, after high-frequency arc strike, electric arc carries first jet outside by argon gas, arrive the air-flow cabin become by ceramic rotational flow ring, nitrogen is sent into by the second gas feed, and rotate into chamber by the tangential small-hole on ceramic cyclone ring, electric arc is compressed in the center of blast tube and the outer rim be elongated to blast tube in the blast tube of the Lavalle cast of second nozzle, formation high arc voltage, the stable extendability plasma arc gathered, the supersonic speed of plasma arc makes the dusty spray entered from powder channel be effectively heated acceleration, striking work forms coating, double-water internal cooling system, anticathode and two nozzles cool respectively, by being provided with flowrate control valve on the water pipe be connected with cooling channel, the flow of water coolant can be regulated respectively, thus the heat that controlled cooling model water-band is walked, effectively ensure the heat content of plasma arc.
By arranging two nozzles, first nozzle specializes in striking use, and plasma arc is subject to first time compression at this; The employing Lavalle cylinder structure of second nozzle, swirl flow gas is introduced by ceramic cyclone ring, cause the negative pressure pointing to channel center, plasma arc compresses further, flame passes Flow Velocity is made to reach supersonic speed, the flame stream of outlet is uniform DC, and anode spot is fallen within cool most ideal position, effectively can prevent the scaling loss of negative electrode; By adopting two inner cooling water road, anticathode and two nozzles cool respectively, by regulating the flow of two-way water coolant, thus the heat that controlled cooling model water-band is walked, the heat content of effective guarantee plasma arc, improves energy utilization rate, and two interior water-cooled can the optimized electronic emission rate of effective control cathode, prevent negative electrode overheated and accelerate scaling loss, extending the work-ing life of spray gun.
Claims (5)
1. the plasma spray gun of a nano coating screw rod, comprise cathode carrier (1), cathode carrier (1) top is provided with negative electrode (2), be positioned at the isolator (3) of cathode carrier (1) outside, be positioned at the rifle shell (4) of isolator (3) outside, be positioned at rifle shell (4) left end, rear pressing cover (5) together with rifle shell (4) is fixed with cathode carrier (1) and isolator (3), it is characterized in that: described rifle shell (4) right-hand member is provided with first jet (6), the centre of first jet (6) is provided with nozzle bore (7), the left end of described nozzle bore (7) is horn-like, right-hand member cylindrically, the top of described negative electrode (2) is suspended from nozzle bore (7), air cavity (8) is provided with between the left end of negative electrode (2) and isolator, air cavity (8) is communicated with the first gas feed (9) be positioned on rifle shell (4), described cathode carrier (1) and negative electrode (2) center are provided with the first cooling-water duct (10) communicated with outside, the right-hand member of described first jet (6) is provided with second nozzle (11), the blast tube (12) of described second nozzle (11) for Lavalle tubular, second nozzle (11) is provided with independently the second cooling-water duct (13), second gas feed (14) identical with blast tube (12), described second nozzle (11) top is provided with powder conveying pipe (15), powder conveying pipe (15) wall offers powder channel (16), described second nozzle (11) is connected with first jet (6) and rifle shell (4) by front gland (17).
2. the plasma spray gun of nano coating screw rod as claimed in claim 1, is characterized in that: described blast tube (12) position corresponding with nozzle bore (7) is provided with ceramic cyclone ring (18), and (18) are provided with intake opening to ceramic cyclone ring.
3. the plasma spray gun of nano coating screw rod as claimed in claim 2, it is characterized in that: described first jet (6) right top is provided with circular, screwed recessed groove (19), the inwall of ceramic cyclone ring (18) is provided with the screw thread be connected that to match with recessed groove (19); One end of described ceramic cyclone ring (18) is by being screwed in first jet (6), and the other end holds out against the left end with blast tube (12).
4. the plasma spray gun of nano coating screw rod as claimed in claim 1, be is characterized in that: be fixedly connected with by screw thread rotation between described powder conveying pipe (15) with second nozzle (11), and described powder conveying pipe (15) is detachable.
5. the plasma spray gun of nano coating screw rod as claimed in claim 1, is characterized in that: described blast tube (12), nozzle bore (7) on same medullary ray.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420338054.4U CN204039481U (en) | 2014-06-24 | 2014-06-24 | The plasma spray gun of nano coating screw rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420338054.4U CN204039481U (en) | 2014-06-24 | 2014-06-24 | The plasma spray gun of nano coating screw rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204039481U true CN204039481U (en) | 2014-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420338054.4U Expired - Fee Related CN204039481U (en) | 2014-06-24 | 2014-06-24 | The plasma spray gun of nano coating screw rod |
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| Country | Link |
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| CN (1) | CN204039481U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105376923A (en) * | 2015-11-12 | 2016-03-02 | 华中科技大学 | Atom generator capable of improving atomic beam density |
| CN114717545A (en) * | 2022-03-24 | 2022-07-08 | 沈阳工业大学 | Plasma-assisted cold spraying device and processing method for high-melting-point metal material |
-
2014
- 2014-06-24 CN CN201420338054.4U patent/CN204039481U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105376923A (en) * | 2015-11-12 | 2016-03-02 | 华中科技大学 | Atom generator capable of improving atomic beam density |
| CN114717545A (en) * | 2022-03-24 | 2022-07-08 | 沈阳工业大学 | Plasma-assisted cold spraying device and processing method for high-melting-point metal material |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141224 Termination date: 20170624 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |