CN104561880A - Flame spray gun and spray device - Google Patents
Flame spray gun and spray device Download PDFInfo
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- CN104561880A CN104561880A CN201410795757.4A CN201410795757A CN104561880A CN 104561880 A CN104561880 A CN 104561880A CN 201410795757 A CN201410795757 A CN 201410795757A CN 104561880 A CN104561880 A CN 104561880A
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Abstract
The invention discloses a flame spray gun and a spray device, relates to the technical field of alloy powder thermal spraying, and solves the technical problems that in the prior art alloy powder is low in utilization efficiency and a flame spray gun is relatively short in service life. According to the main technical scheme, the flame spray gun comprises a nozzle and a powder supply tube column, wherein a through powder ejection hole is formed in the center of the nozzle; flame ejection holes are uniformly formed in the periphery of the powder ejection hole; one end of the powder supply tube column is communicated with the powder ejection hole of the nozzle; a powder supply tube connector is mounted at the other end of the powder supply tube column; the powder supply tube column is of an integrated structure. According to the flame spray device, automatic powder and flame spray control system equipment is adopted to control metering and conveying of fuel gases, oxidant gases and powder of the flame spray gun, the flame spray gun is mainly used for spraying powder flame, and the technical problems that in the prior art the alloy powder is low in utilization efficiency and a flame spray gun is relatively short in service life are solved.
Description
Technical field
The present invention relates to powdered alloy technical field of hot, particularly relate to a kind of flame spraying gun and spray equipment.
Background technology
Flame spray powder coating is that one adopts oxy-acetylene flame as thermal source, and spray material is the heat spraying method of powder; Flame spray powder coating equipment is simple, and the material category that can spray is more.So flame spray powder coating applies hot-spraying techniques the most general.Flame spray powder coating adopts oxyacetylene torch powdered alloy spray gun to realize spraying, particularly, oxygen and acetylene are sent respectively the flame-thrower nozzle sprayed by flame ejection, powder sprays via another powder jet of powder conveying pipe route, oxygen and acetylene combustion produce high temperature by powder spraying on the surface of workpiece through surface preparation, form the alloy coat of semi-melting state, realize powdered alloy spraying.
In prior art, oxyacetylene torch powdered alloy spray gun generally all adopts 12 holes, 10 the holes even flame-thrower nozzle in 8 holes, and the aperture of flame-thrower nozzle is generally at 1.0mm.Meanwhile, for ease of adjustment powder sending quantity, the powder feeding pipeline of spray gun is through being formed by multiple copper assembling parts, and during use, powdered alloy delivers to the powder injection hole of nozzle by powder feeding pipeline, realizes spraying.
When adopting above-mentioned spray gun to carry out spraying operation, contriver finds that in prior art, at least there are the following problems:
(1) in prior art, powder conveying pipe road is made from multiple components and forms, cause internal diameter in powder feeding pipes not of uniform size, powder feeding effect is poor, meanwhile, the powder feeding pipeline wear resistance of copper material is poor, after using for some time, wearing and tearing can be very serious, also can have a strong impact on powder feeding efficiency, cause powdered alloy utilization ratio lower, work-ing life is shorter simultaneously.
(2) due to the restriction of spray gun flame-thrower nozzle quantity and size in prior art, cause the epigranular coherence request of this flame-thrower nozzle alloy powder very high, once the epigranular consistence of powdered alloy does not reach requirement, when will cause spraying, the utilising efficiency of powdered alloy reduces greatly.
Summary of the invention
In view of this, the embodiment of the present invention provides a kind of flame spraying gun, and main purpose is that solution prior art interalloy powder utilising efficiency is lower, the technical problem that work-ing life is shorter.
For achieving the above object, the present invention mainly provides following technical scheme:
On the one hand, embodiments provide a kind of flame spraying gun, comprising:
Nozzle, the central position of described nozzle is provided with through powder injection hole, described powder injection hole surrounding circumference and be provided with flame spray orifice uniformly;
Powder feeding tubing string, described powder feeding tubing string one end is communicated to the powder injection hole of nozzle, and the other end is provided with powder conveying pipe joint; Wherein:
Described powder feeding tubing string is integral type structure.
Aforesaid flame spraying gun, described flame spray orifice is 16.
Aforesaid flame spraying gun, the aperture of described flame spray orifice is 0.8mm, and heart distance in hole is 10.5-11mm.
Aforesaid flame spraying gun, described flame spraying gun also comprises combustion gas and combustion-supporting letter shoot road, and described combustion gas and one end, combustion-supporting letter shoot road are communicated to flame spray orifice, and the other end is respectively arranged with gas joint and helps gas joint.
Aforesaid flame spraying gun, described flame spraying gun also comprises mixing section, and described mixing section one end is communicated to combustion gas and combustion-supporting letter shoot road, and the other end is communicated to the flame spray orifice of nozzle.
Aforesaid flame spraying gun, described powder feeding tubing string is Hardmetal materials.
Aforesaid flame spraying gun, described nozzle comprises:
Inner chamber body, described powder injection hole is arranged on inner chamber body center;
Shell, described flame spray orifice is ringwise to be arranged on shell, and described outer cover suit is on described inner chamber body outer side wall.
Aforesaid flame spraying gun, described shell and the backlash of described inner chamber body shrink-fit force together.
Aforesaid flame spraying gun, the gas joint on combustion gas and combustion-supporting letter shoot road and help gas joint to be connected to combustion gas automatic transport Controlling System and combustion-supporting gas automatic transport Controlling System respectively.
On the other hand, embodiments of the invention additionally provide a kind of spray equipment, and it comprises:
Flame spraying gun, described flame spraying gun is the flame spraying gun described in above-mentioned any one;
Gas metering e Foerderanlage, described gas metering e Foerderanlage is connected with the gas joint of described flame spraying gun;
Combustion-supporting gas metering and conveying device, described combustion-supporting gas metering and conveying device is connected with the gas joint that helps of described flame spraying gun;
Powder metering and conveying device, described powder metering and conveying device is connected with the powder conveying pipe joint of described flame spraying gun;
Control device, described control device is connected with powder metering and conveying device respectively at gas metering e Foerderanlage, combustion-supporting gas metering and conveying device.
A kind of flame spraying gun that the embodiment of the present invention proposes and spray equipment, wherein, flame spraying gun comprises nozzle and powder feeding tubing string; Nozzle center position is provided with through powder injection hole, powder injection hole surrounding circumference and be provided with flame spray orifice uniformly.Powder feeding tubing string one end is communicated to the powder injection hole of nozzle, and the powder feeding tubing string the other end is provided with powder conveying pipe joint; Wherein, in described flame spraying gun, powder feeding tubing string is integral type structure.The powder feeding tubing string of embodiments of the invention is owing to have employed the powder feeding tubing string of integral structure, tubing string internal surface is smooth without seam, powdered alloy thus tubing string passes through, resistance can not produced again because of the unfairness of tubing string internal surface, affect speed and the throughput of powdered alloy, powder feeding tubing string internal structure be single, sealing, and smooth inwall it also avoid powdered alloy by time frictional force, reduce powdered alloy to the friction of pipe string internal wall, and then add the work-ing life of powder feeding tubing string.
Further, the flame spraying gun that the embodiment of the present invention proposes, have employed the flame spray orifice in 16 holes, circumference and be arranged in powder injection hole surrounding uniformly, to overcome in prior art 12 holes even less flame spray orifice time, the epigranular coherence request of alloy powder is higher, the technical problem that powdered alloy utilising efficiency is lower, increase the flow of oxygen, acetylene, the granularity requirements of alloy powder diminishes, and adds the utilising efficiency of powdered alloy.
Accompanying drawing explanation
The structural representation of a kind of flame spraying gun that Fig. 1 provides for the embodiment of the present invention;
The nozzle arrangements schematic diagram of a kind of flame spraying gun that Fig. 2 provides for the embodiment of the present invention;
The powder conveying pipe rod structure schematic diagram of a kind of flame spraying gun that Fig. 3 provides for the embodiment of the present invention;
The structural representation of a kind of spray equipment that Fig. 4 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.
As shown in Figure 1, Figure 2 and Figure 3, a kind of flame spraying gun that one embodiment of the invention provide, this flame spraying gun comprises nozzle 1 and powder feeding tubing string 2.Wherein, nozzle 1 central position is provided with through powder injection hole 4, powder injection hole 4 surrounding circumference and be provided with flame spray orifice 5 uniformly.Powder feeding tubing string 2 one end is communicated to the powder injection hole 4 of nozzle 1, and powder feeding tubing string 2 the other end is provided with powder conveying pipe joint 3.Wherein, in flame spraying gun, powder feeding tubing string 2 is integral type structure.
The flame spraying gun that the present embodiment provides is by the powder feeding tubing string of this integral structure, tubing string internal surface is smooth without seam, powdered alloy thus tubing string passes through, resistance can not produced again because of the unfairness of tubing string internal surface, affect speed and the throughput of powdered alloy, powder feeding tubing string internal structure be single, sealing, and smooth inwall it also avoid powdered alloy by time frictional force, reduce powdered alloy to the friction of pipe string internal wall, and then add the work-ing life of powder feeding tubing string.
Further, another embodiment of the present embodiment provides a kind of flame spraying gun, and compared with above-described embodiment, the powder feeding tubing string 2 of the present embodiment is Hardmetal materials.On the basis of above-described embodiment, adopt Hardmetal materials as the material of powder feeding tubing string, hardness is better, and wear resistance is better, and work-ing life extends greatly.
Further, another embodiment of the present embodiment provides a kind of flame spraying gun, and compared with above-described embodiment, the flame spray orifice 5 in the flame spraying gun of the present embodiment is 16.
The flame spraying gun that the present embodiment provides, have employed the flame spray orifice in 16 holes, circumference and be arranged in powder injection hole surrounding uniformly, to overcome in prior art 12 holes even less flame spray orifice time, the epigranular coherence request of alloy powder is higher, and the technical problem that powdered alloy utilising efficiency is lower increases the flow of oxygen, acetylene, the granularity requirements of alloy powder diminishes, and adds the utilising efficiency of powdered alloy.
Further, another embodiment of the present embodiment provides a kind of flame spraying gun, and compared with above-described embodiment, in the flame spraying gun of the present embodiment, the aperture of flame spray orifice 5 is preferably 0.8mm, and heart distance in hole is 10.5-11mm.Adopt above-mentioned aperture and the hole heart apart from combining with the above embodiments, the flame intensity that flame spraying gun Flame spray orifice can be made to spray is larger, the ring dress flame temperature that it is formed improves, particle slightly large in alloy powder also can play good melting, alloy powder size requires that prior art is so not strict for another example, what reduce powdered alloy makes cost, adds the utilization ratio of powdered alloy simultaneously, reduces spraying cost further.
Further, another embodiment of the present embodiment provides a kind of flame spraying gun, compared with above-described embodiment, as shown in Figure 1, the flame spraying gun that the present embodiment proposes also comprises combustion gas and combustion-supporting letter shoot road 6 and mixing section (not shown), described combustion gas and one end, combustion-supporting letter shoot road 6 are communicated to flame spray orifice 5, and the other end is respectively arranged with gas joint and helps gas joint.Mixing section one end is communicated to combustion gas and combustion-supporting letter shoot road 6, and the other end is communicated to the flame spray orifice 5 of nozzle 1.Namely combustion gas and combustion-supporting gas are just delivered to flame spray orifice and carry out work after mixing section mixing.
Particularly, combustion gas enters by the gas joint of fuel gas transmission pipeline one end is with pressure, through fuel gas transmission pipeline, enter to mixing section, simultaneously, combustion-supporting gas by the combustion-supporting gas laced belt of one end, combustion-supporting letter shoot road compress into into, through combustion-supporting letter shoot road, also enter mixing section, after combustion gas and combustion-supporting gas fully mix in mixing section, be delivered to the flame spray orifice at nozzle place again, carry out ignition.Wherein fuel gas transmission and help the caliber of fuel gas transportation pipeline to determine according to fuel gas transmission speed and combustion-supporting gas transfer rate, preferably, combustion-supporting gas inlet be traditionally arranged to be 0.55 ~ 0.65 cubic metre per hour, combustion gas inlet be traditionally arranged to be 1.1 ~ 1.2 cubic metres per hour, for ease of operation, the same length of gas pipeline and combustion-supporting feed channel under normal circumstances, to be namely about 1:2 comparatively suitable for the caliber ratio of gas pipeline and combustion-supporting feed channel.Corresponding, the inlet of the powdered alloy of spraying is advisable with 5-7 per hour kilogram, the spraying pressure of combustion-supporting gas oxygen is generally arranged on 0.7-0.8MPa and is advisable, the spraying pressure general control of combustion gas acetylene is at 0.1-0.11MPa, and all duct lengths of gas pipeline and combustion-supporting gas are about about 20 meters.Enter oxygen, acetylene and powdered alloy usage quantity and pressure etc. with this ratio, the utilization ratio of powdered alloy can be made to greatest extent to improve, simultaneously ensure oxygen and acetylene consumption minimum.
Preferred as above-described embodiment, the gas joint on combustion gas and combustion-supporting letter shoot road and help gas joint to be connected to combustion gas automatic transport Controlling System and combustion-supporting gas automatic transport Controlling System respectively.Described combustion gas automatic transport Controlling System and combustion-supporting gas automatic transport Controlling System comprise gas metering e Foerderanlage and combustion-supporting gas metering and conveying device.Combustion gas and combustion-supporting gas after metering positive delivery to combustion gas and combustion-supporting letter shoot road, combustion gas automatic transport Controlling System and combustion-supporting gas automatic transport Controlling System can be finely tuned the transfer rate etc. of combustion gas and combustion-supporting gas as required, to meet the fuel gas transmission requirement under different situations.Better saving combustion gas and combustion-supporting gas, farthest meet alloy powder melts requirement.
Further, another embodiment of the present embodiment provides a kind of flame spraying gun, and compared with above-described embodiment, as shown in Figure 2, the nozzle 1 of the flame spraying gun that the present embodiment provides comprises inner chamber body 7 and shell 8.Wherein, powder injection hole 4 is arranged on inner chamber body 7 center; Flame spray orifice 5 is ringwise to be arranged on shell 8, and shell 8 is sleeved on described inner chamber body 7 outer side wall.Preferably, described shell 8 forces together with the backlash of described inner chamber body 7 shrink-fit.
Nozzle described in this embodiment, owing to being forced together by shrink-fit backlash, one is formed between shell and inner chamber body, and compact siro spinning technology, the powdered alloy of powder injection hole ejection can better contact with the flame that the flame spray orifice of surrounding sprays, ensure the better melting of powdered alloy, improve the utilization ratio of powdered alloy.
On the other hand, as shown in Figure 4, one embodiment of the invention also provide a kind of spray equipment, and this spray equipment comprises: flame spraying gun, gas metering e Foerderanlage, combustion-supporting gas metering and conveying device, powder metering and conveying device and control device.Wherein, flame spraying gun is any one flame spraying gun described in above-described embodiment.Gas metering e Foerderanlage is connected with the gas joint of described flame spraying gun; Combustion-supporting gas metering and conveying device is connected with the gas joint that helps of described flame spraying gun; Powder metering and conveying device is connected with the powder conveying pipe joint of described flame spraying gun; Control device is connected with powder metering and conveying device respectively at gas metering e Foerderanlage, combustion-supporting gas metering and conveying device.
Further, control device is powder, flame plating automatic control system, the metering conveying of the combustion gas of flame spraying gun described in its major control, combustion-supporting gas and powder.Powder, flame plating automatic control system are provided with powder sending quantity variable valve, can lead to the powder sending quantity of spray gun powder feeding tubing string, thus accurately control powdered material cost according to coating thickness requirement fine adjustment needed for workpiece.
When adopting above-described embodiment to carry out spraying operation, first the power supply of control device is opened, start control device, start gas metering e Foerderanlage, combustion-supporting gas metering and conveying device and powder metering and conveying device respectively again, operational throughput and the transfer pressure of combustion gas are set respectively by control device, the operational throughput of combustion-supporting gas and transfer pressure, and the delivery of carrier gas pressure of powder and feed flow, then press startup and light button and start to carry out spray coating operations.Described flame spraying gun can also be placed on the bracing or strutting arrangement of liftable and translation, track to be sprayed is stored in control device,, left and right or movable upper and lower according to TRAJECTORY CONTROL flame spraying gun to be sprayed by control device, ensure the accuracy of movement, and then ensure homogeneity and the consistence of spraying operation, improve coating quality.This full automatic spray equipment saves manpower greatly, and can realize automatic spraying operation, improves coating quality and efficiency.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (10)
1. a flame spraying gun, is characterized in that, comprising:
Nozzle, the central position of described nozzle is provided with through powder injection hole, described powder injection hole surrounding circumference and be provided with flame spray orifice uniformly;
Powder feeding tubing string, described powder feeding tubing string one end is communicated to the powder injection hole of nozzle, and the other end is provided with powder conveying pipe joint;
Wherein, described powder feeding tubing string is integral type structure.
2. flame spraying gun according to claim 1, is characterized in that, described flame spray orifice is 16.
3. flame spraying gun according to claim 2, is characterized in that, the aperture of described flame spray orifice is 0.8mm, and heart distance in hole is 10.5-11mm.
4. flame spraying gun according to claim 1, it is characterized in that, described flame spraying gun also comprises combustion gas and combustion-supporting letter shoot road, and described combustion gas and one end, combustion-supporting letter shoot road are communicated to flame spray orifice, and the other end is respectively arranged with gas joint and helps gas joint.
5. flame spraying gun according to claim 4, is characterized in that, described flame spraying gun also comprises mixing section, and described mixing section one end is communicated to combustion gas and combustion-supporting letter shoot road, and the other end is communicated to the flame spray orifice of nozzle.
6. flame spraying gun according to claim 1, is characterized in that, described powder feeding tubing string is Hardmetal materials.
7. flame spraying gun according to claim 1, is characterized in that, described nozzle comprises:
Inner chamber body, described powder injection hole is arranged on inner chamber body center;
Shell, described flame spray orifice is ringwise to be arranged on shell, and described outer cover suit is on described inner chamber body outer side wall.
8. flame spraying gun according to claim 7, is characterized in that, described shell and the backlash of described inner chamber body shrink-fit force together.
9. flame spraying gun according to claim 4, is characterized in that, the gas joint on combustion gas and combustion-supporting letter shoot road and help gas joint to be connected to combustion gas automatic transport Controlling System and combustion-supporting gas automatic transport Controlling System respectively.
10. a spray equipment, is characterized in that, this spray equipment comprises:
Flame spraying gun, described flame spraying gun is the flame spraying gun described in any one of claim 1-9;
Gas metering e Foerderanlage, described gas metering e Foerderanlage is connected with the gas joint of described flame spraying gun;
Combustion-supporting gas metering and conveying device, described combustion-supporting gas metering and conveying device is connected with the gas joint that helps of described flame spraying gun;
Powder metering and conveying device, described powder metering and conveying device is connected with the powder conveying pipe joint of described flame spraying gun;
Control device, described control device is connected with powder metering and conveying device respectively at gas metering e Foerderanlage, combustion-supporting gas metering and conveying device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410795757.4A CN104561880B (en) | 2014-12-18 | 2014-12-18 | A kind of flame spraying gun and spray equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410795757.4A CN104561880B (en) | 2014-12-18 | 2014-12-18 | A kind of flame spraying gun and spray equipment |
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| CN104561880A true CN104561880A (en) | 2015-04-29 |
| CN104561880B CN104561880B (en) | 2017-12-22 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2070654U (en) * | 1990-07-15 | 1991-02-06 | 唐山钢铁公司劳动服务公司机械修配厂 | Multipurpose cutting torch |
| US5207382A (en) * | 1989-06-03 | 1993-05-04 | Eutectic Corporation | Autogenous flame spraying apparatus for the flame spraying of powder-form materials or spray powder |
| CN101181703A (en) * | 2007-12-14 | 2008-05-21 | 安东石油技术（集团）有限公司 | Powder flame-thrower nozzle |
| CN201644280U (en) * | 2010-02-25 | 2010-11-24 | 黎明 | Anti-corrosion flame plastic spraying device |
| JP2013173983A (en) * | 2012-02-24 | 2013-09-05 | Shin-Men Tekko Co Ltd | Extension for flame spraying gun |
| CN204325469U (en) * | 2014-12-18 | 2015-05-13 | 安东石油技术（集团）有限公司 | A kind of flame spraying gun and spray equipment |
-
2014
- 2014-12-18 CN CN201410795757.4A patent/CN104561880B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5207382A (en) * | 1989-06-03 | 1993-05-04 | Eutectic Corporation | Autogenous flame spraying apparatus for the flame spraying of powder-form materials or spray powder |
| CN2070654U (en) * | 1990-07-15 | 1991-02-06 | 唐山钢铁公司劳动服务公司机械修配厂 | Multipurpose cutting torch |
| CN101181703A (en) * | 2007-12-14 | 2008-05-21 | 安东石油技术（集团）有限公司 | Powder flame-thrower nozzle |
| CN201644280U (en) * | 2010-02-25 | 2010-11-24 | 黎明 | Anti-corrosion flame plastic spraying device |
| JP2013173983A (en) * | 2012-02-24 | 2013-09-05 | Shin-Men Tekko Co Ltd | Extension for flame spraying gun |
| CN204325469U (en) * | 2014-12-18 | 2015-05-13 | 安东石油技术（集团）有限公司 | A kind of flame spraying gun and spray equipment |
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| CN104561880B (en) | 2017-12-22 |
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