CN214288866U - Coaxial combustion jet type inner hole supersonic speed spray gun - Google Patents
Coaxial combustion jet type inner hole supersonic speed spray gun Download PDFInfo
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- CN214288866U CN214288866U CN202023201641.3U CN202023201641U CN214288866U CN 214288866 U CN214288866 U CN 214288866U CN 202023201641 U CN202023201641 U CN 202023201641U CN 214288866 U CN214288866 U CN 214288866U
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Abstract
The utility model discloses a coaxial combustion efflux type hole supersonic speed spray gun, it includes the rifle body, combustion chamber, interior reposition of redundant personnel ring and outer reposition of redundant personnel ring, the exit end of combustion chamber through press the cap with rifle body coupling, its entry end has set gradually outer reposition of redundant personnel ring and interior reposition of redundant personnel ring, interior reposition of redundant personnel ring through bottom linking module with rifle body coupling, be provided with in the linking module of bottom and send the powder passageway, be provided with in the central shaft hole that interior reposition of redundant personnel ring and outer reposition of redundant personnel ring all set up and send the powder needle, send the powder needle with send powder passageway intercommunication, the internal oxygen passageway and the coal gas passageway of being provided with respectively of rifle, be provided with helical structure on the interior reposition of redundant personnel ring, oxygen and coal gas process helical structure mixes and jetts into in the combustion chamber. The utility model discloses rifle pipe combustion chamber is as an organic whole, simplifies being connected of barrel and combustion chamber, and the barrel has guaranteed coaxially with the combustion chamber simultaneously, has reduced the influence that the bend flows to the flame.
Description
The technical field is as follows:
the utility model relates to a spray gun for hot spraying especially relates to a coaxial burning efflux type hole supersonic speed spray gun.
Background art:
supersonic flame spraying is generally used for spraying the outer surface of a workpiece, for a narrow space with the diameter within 500mm, only a special elbow inner hole spray gun can be used, a gun barrel of the spray gun has a 60-degree or 45-degree included angle with a combustion chamber, common inner hole supersonic flame spray guns for spraying inner walls adopt gas fuel, the pressure of the gas fuel is not high, the pressure of the combustion chamber is low when the spray gun burns, the speed of formed flame is low, when the inner walls of narrow pipelines or inner holes of some workpieces are sprayed, the speed of sprayed particles is generally 500m/s, the particles impact the surface of the workpiece to form a coating, the combination strength required for the coating is high (more than 80%), and the porosity is low (less than 1%) and the gas inner hole spray gun cannot meet the requirement. Moreover, the basic combustion chamber of a common inner-hole supersonic flame spray gun has a certain included angle with the gun barrel, so that the resistance is increased, the heat is lost, and the speed is lost.
The utility model has the following contents:
the utility model discloses the technical problem that will solve is: the coaxial combustion jet type inner hole supersonic speed spray gun overcomes the defects of the prior art, has reasonable design, and the combustion chamber and the gun barrel have coaxial structures, reduces the loss of heat and flame flow speed, and simultaneously meets the requirement of spraying small inner holes.
The technical scheme of the utility model is that:
a coaxial combustion jet type supersonic spray gun with inner hole comprises a gun body, a combustion chamber, an inner shunting ring and an outer shunting ring, the combustion chamber is positioned in the inner cavity of the gun body, the outlet end of the combustion chamber is connected with the gun body through a pressing cap, the inlet end of the combustion chamber is sequentially provided with the outer shunt ring and the inner shunt ring, the inner shunt ring is connected with the gun body through a bottom connecting module, the bottom connecting module is internally provided with a powder feeding channel, the inner shunting ring and the outer shunting ring are both provided with central shaft holes, the central shaft hole is internally provided with powder feeding powder which is communicated with the powder feeding channel, the gun body is internally provided with an oxygen channel and a coal gas channel respectively, the inner shunting ring is provided with a spiral structure, the oxygen channel and the coal gas channel are respectively communicated with the inner shunting ring and the outer shunting ring, and oxygen and coal gas are mixed through the spiral structure and injected into the combustion chamber.
A jacket is arranged between the combustion chamber and the gun body, a cooling water channel is arranged on the gun body, and the cooling water channel is communicated with the jacket to form a circulating water flow channel.
The pressure cap is connected with the gun body through a bolt, and the bottom connecting module is connected with the gun body through a bolt.
The utility model has the advantages that:
1. the utility model discloses rifle pipe combustion chamber is as an organic whole, simplifies being connected of barrel and combustion chamber, and the barrel has guaranteed coaxially with the combustion chamber simultaneously, has reduced the influence that the bend flows to the flame.
2. The utility model discloses send the powder to send the powder for the axial to flame heating in combustion chamber and the barrel guarantees to send the powder to be located the flame center, has increased the heat time of powder simultaneously, makes the powder heating more abundant.
3. The utility model relates to a small and exquisite minimum 50MM hole spraying that can realize, recirculated cooling water carries out cooling protection spray gun to the spray gun in getting into the cavity of rifle pipe combustion chamber and rifle body in addition.
4. The utility model relates to a rationally, combustion chamber and barrel be coaxial-type structure, reduced heat and flame speed and run off, its application scope is wide, has good economic benefits after promoting.
Description of the drawings:
FIG. 1 is a schematic structural view of a coaxial combustion jet type inner bore supersonic velocity spray gun;
FIG. 2 is a left side view of the coaxial combustion jet internal bore supersonic lance shown in FIG. 1;
fig. 3 is a schematic structural diagram of the inner shunt in fig. 1.
The specific implementation mode is as follows:
example (b): referring to fig. 1-3, in the figure, 1-pressing cap, 2-combustion chamber, 3-gun body, 4-outer shunt ring, 5-inner shunt ring, 6-powder feeding, 7-bottom connecting module, 8-powder feeding channel, 9-gas channel, 10-cooling water channel, and 11-oxygen channel.
Coaxial combustion efflux type hole supersonic speed spray gun, including the rifle body 3, combustion chamber 2, interior reposition of redundant personnel ring 5 and outer reposition of redundant personnel ring 4, wherein: the combustion chamber 2 is arranged in an inner cavity of the gun body 3, an outlet end of the combustion chamber 2 is connected with the gun body 3 through a pressing cap 1, an inlet end of the combustion chamber 2 is sequentially provided with an outer shunting ring 4 and an inner shunting ring 5, the inner shunting ring 5 is connected with the gun body 3 through a bottom connecting module 7, a powder feeding channel 8 is arranged in the bottom connecting module 7, the inner shunting ring 5 and the outer shunting ring 4 are both provided with a central shaft hole, powder feeding powder 6 is arranged in the central shaft hole, the powder feeding needle 6 is communicated with the powder feeding channel 8, an oxygen channel and a coal gas channel (not shown in the figure) are respectively arranged in the gun body 3, a spiral structure is arranged on the inner shunting ring 5, the oxygen channel and the coal gas channel are respectively communicated with the inner shunting ring 5 and the outer shunting ring 4, and the oxygen and the coal gas are mixed through the spiral structure and are injected into the combustion chamber 3.
The preferred scheme is as follows: a jacket is arranged between the combustion chamber 2 and the gun body 3, a cooling water channel 10 is arranged on the gun body 3, and the cooling water channel 10 is communicated with the jacket to form a circulating water flow channel. The pressing cap 1 is connected with the gun body 3 through a bolt, and the bottom connecting module 7 is connected with the gun body 3 through a bolt.
The working principle is as follows:
water, kerosene, oxygen and powder enter the spray gun through each channel respectively; kerosene and oxygen enter between the inner shunt ring and the outer shunt ring, the kerosene and the oxygen are mixed through the spiral structure of the inner shunt ring 5 and are injected into the combustion chamber 2, and the kerosene and the oxygen are ignited at the muzzle through the external igniter to ignite the spray gun to form high-speed flame flow; powder is sent into the spray gun through the powder feeding channel 8, the powder axially enters the combustion chamber 2 through the powder feeding needle 6, and is coated and heated by flame in the combustion chamber 2 and the gun tube and then is melted and sprayed on the surface of a workpiece to form a coating; and circulating cooling water enters the cavity between the gun tube combustion chamber and the gun body to cool and protect the spray gun.
The utility model discloses rifle pipe combustion chamber is as an organic whole, simplifies being connected of barrel and combustion chamber, and the barrel has guaranteed coaxially with the combustion chamber simultaneously, has reduced the influence that the bend flows to the flame.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments still fall within the scope of the technical solution of the present invention.
Claims (3)
1. The utility model provides a coaxial combustion efflux type hole supersonic speed spray gun, includes rifle body, combustion chamber, interior reposition of redundant personnel ring and outer reposition of redundant personnel ring, characterized by: the combustion chamber is located in the inner chamber of the rifle body, the exit end of combustion chamber through press the cap with rifle body coupling, the entry end of combustion chamber has set gradually outer reposition of redundant personnel ring and interior reposition of redundant personnel ring, interior reposition of redundant personnel ring through bottom link module with rifle body coupling, be provided with in the bottom link module and send the powder passageway, interior reposition of redundant personnel ring all is provided with central shaft hole with outer reposition of redundant personnel ring, be provided with in the central shaft hole and send the powder needle, send the powder needle with send powder passageway intercommunication, the internal oxygen passageway and the gas channel of being provided with respectively of rifle, be provided with helical structure on the interior reposition of redundant personnel ring, oxygen passageway and gas channel respectively with communicate between interior reposition of redundant personnel ring and the outer reposition of redundant personnel ring, oxygen and gas process helical structure mixes and jetts into in the combustion chamber.
2. The coaxial combustion jet-type supersonic internal bore lance of claim 1 wherein: a jacket is arranged between the combustion chamber and the gun body, a cooling water channel is arranged on the gun body, and the cooling water channel is communicated with the jacket to form a circulating water flow channel.
3. The coaxial combustion jet-type supersonic internal bore lance of claim 1 wherein: the pressure cap is connected with the gun body through a bolt, and the bottom connecting module is connected with the gun body through a bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023201641.3U CN214288866U (en) | 2020-12-28 | 2020-12-28 | Coaxial combustion jet type inner hole supersonic speed spray gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023201641.3U CN214288866U (en) | 2020-12-28 | 2020-12-28 | Coaxial combustion jet type inner hole supersonic speed spray gun |
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| CN214288866U true CN214288866U (en) | 2021-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202023201641.3U Active CN214288866U (en) | 2020-12-28 | 2020-12-28 | Coaxial combustion jet type inner hole supersonic speed spray gun |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112705372A (en) * | 2020-12-28 | 2021-04-27 | 郑州立佳热喷涂机械有限公司 | Coaxial combustion jet type inner hole supersonic speed spray gun |
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2020
- 2020-12-28 CN CN202023201641.3U patent/CN214288866U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112705372A (en) * | 2020-12-28 | 2021-04-27 | 郑州立佳热喷涂机械有限公司 | Coaxial combustion jet type inner hole supersonic speed spray gun |
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