CN2045674U - Oxygen acetylene flame plastics powder flame plating gun - Google Patents
Oxygen acetylene flame plastics powder flame plating gun Download PDFInfo
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- CN2045674U CN2045674U CN88218743U CN88218743U CN2045674U CN 2045674 U CN2045674 U CN 2045674U CN 88218743 U CN88218743 U CN 88218743U CN 88218743 U CN88218743 U CN 88218743U CN 2045674 U CN2045674 U CN 2045674U
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- powder
- exit portal
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- high pressure
- acetylene
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Abstract
The utility model discloses an oxygen acetylene flame plastics powder flame plating gun, comprising a nozzle, a powder transporting device and a gun body. The utility model uses the oxygen acetylene flame as the heat source to heat the plastic powder under the protection of a gas curtain formed by the high pressure current to make the plastic powder in the molten condition and not become deteriorated because of being overheated so as to completely solve the problem that the plastic powder can not pass through the flame zone safely. The plating gun can not be limited by the size, the shape, the material and the position of the plated piece, can work on the large structural part out of the door, and can get the same coating quality with the method of plating the plastic with the static electricity.
Description
The utility model belongs to a kind of oxy-acetylene flame plastispray rifle
The plastic coating smooth in appearance is attractive in appearance, is extremely desirable ornament materials.In addition, it has performances such as good anticorrosion, mechanical, electrical equipment, therefore has a wide range of applications at aspects such as machinery, chemical industry, light industry, national defence.The metals capacity of splendid attire corrosive medium in a lot of large-scale steel structural parts of China, the chemical industry adopts brush paint mostly or adopts methods such as inlaying plastic plate, stereotype to solve, and the insulating barrier in the electrical apparatus industry generally all leans on cushioning insulation board pad to solve, and is very inconvenient.Along with science and technology development, the plastic coating spraying coating process comes out, and at solid material surface spraying one deck plastic coating, mainly is nylon, epoxy type and polyester-type coating promptly, thereby changes that it is corrosion-resistant, insulation, performance such as attractive in appearance.The method of at present known spraying plastic powders is an electrostatic plastic spraying, be about to be placed the DC electric field of a high pressure (8～120,000 volts) by the spray part, drive plastic powders with air-flow and pass corona, after powder is charged, under electric field action, inhale and be dispersed in by spray part surface, to be placed in the baking oven by the spray part then and heat, and make plastic powders reach fusion or solid state, promptly get plastic coating after the cooling.It must be the conductor material that the disadvantage of this method is sprayed part, and volume also should not be too big, must can put into baking oven, thus size, shape, material and the quilt spray position etc. of being sprayed part all there is certain requirement, and the equipment manufacturing cost of electrostatic plastic spraying is very high.
The purpose of this utility model provides a kind of plastispray rifle that adopts the oxyacetylene torch heating, and in spraying process, powder is heated to molten condition, and sends muzzle uniformly.
To achieve these goals; the utility model adopts " air curtain " Protection Code; can be heated to molten condition when making plastic powders by flame zone; not influenced by thermal-flame and make it cross thermal metamorphism; cause carbonization decomposition etc.; adopt suspension simultaneously and penetrate the suction way of combining, make plastic powders can send muzzle uniformly.
Accompanying drawing 1: plastispray rifle structural representation.
Accompanying drawing 2: plastispray rifle nozzle schematic diagram, high pressure draught exit portal are circumferential weld shape structure, circumferential weld width 0.5～3mm.
Accompanying drawing 3: plastispray rifle nozzle schematic diagram, high pressure draught exit portal are annular distance shape structure, aperture φ 0.5～3mm.
Below drawing reference numeral is made a brief description.
［ 1 ］. boiling shape suspension plastic powders;
［ 2 ］. the plastic powders funnel;
［ 3 ］. the powder feeding air valve;
［ 4 ］. powder feeding air-flow input pipe;
［ 5 ］. the control damper of suspended powder;
［ 6 ］. the oxygen valve;
［ 7 ］. the acetylene valve;
［ 8 ］. the oxy-acetylene mixing tube;
［ 9 ］. high pressure " air curtain " valve;
［ 10 ］. " air curtain " gas channel;
［ 11 ］. outer nozzle;
［ 12 ］. gas powder mixed flow exit portal, φ 2～3mm;
［ 13 ］. the high pressure draught exit portal;
［ 14 ］. the high pressure draught passage;
［ 15 ］. oxy-acetylene mixed airflow exit portal, φ 0.2～2.0mm;
［ 16 ］. gas powder mixing tube;
［ 17 ］. negative pressuren zone;
［ 18 ］. the powder feeding gas nozzle;
［ 19 ］. the powder feeding gas passage;
［ 20 ］. the powder output channel;
［ 21 ］. the high pressure draught passage;
［ 22 ］. combustion-supporting oxygen channel;
［ 23 ］. the high pressure gas input adapter;
［ 24 ］. combustion-supporting oxygen input adapter;
［ 25 ］. the acetylene gas input adapter;
Operation principle of the present utility model is as follows:
1. the principle of " air curtain " and effect
Gas powder mixed flow penetrates from ［ 12 ］; The oxy-acetylene mixed airflow penetrates from ［ 15 ］, becomes a fire ring through igniting, intersect at the about 50～70mm of distance muzzle place, and concentric with ［ 12 ］; High pressure draught penetrates through circumferential weld (or annular distance) ［ 13 ］, between gas powder mixed flow jet and fire ring, as curtain, the two is separated, so claim " air curtain ", when " air curtain " when passing flame flow, forms the no passage of flame of a taper shape.Learn boundary line, approaching more outside according to jet field semiempirical formula, effluxvelocity is low more, therefore, the speed of high pressure draught is higher than the speed of flame flow, like this, the flame stream of low speed will be attached on the interface, high speed gas jet outside and travel forward with high speed gas jet, thereby form an aphlogistic conical air-flow.In addition; the flame flow that is attached to conical air stream surface is given conical air-flow with thermal energy transfer again, then when plastic powders and powder feeding gas together from ［ 12 ］ after the ejaculation, just under the protection of conical air curtain; heating is quickened, and finally becomes molten condition and clashes into into powder (being coated with) layer with working face.
2. the powder suspension principle of carrying
High pressure draught enters powder tube ［ 2 ］ through passage ［ 4 ］, and under the percussion of this air-flow, the powder ［ 1 ］ in the powder tube ［ 2 ］ produces boiling, becomes suspended state.
Open powder feeding air valve ［ 3 ］, the powder feeding gas that is arranged in ［ 19 ］ is injected mixing tube ［ 16 ］ by powder feeding gas nozzle ［ 18 ］, make ［ 17 ］ to locate to produce negative pressure simultaneously, suspension powder ［ 1 ］ in the powder tube ［ 2 ］ is under the effect of negative pressure ［ 17 ］, enter negative pressure ［ 17 ］ by pipeline ［ 20 ］, be mixed into mixing tube ［ 16 ］, from ［ 12 ］, penetrate at last with powder feeding gas, so promptly reached the purpose of even powder delivery, powder mass flow be 0.5～10 kilogram/time.
The utility model adopts flowmeter to control oxygen, acetylene gas, high pressure gas and powder feeding gas flow, can change flame properties and flame flow diameter and conical gas flow temperature arbitrarily like this, thereby guarantees that plastic powders can reach desirable molten condition.Change the powder feeding gas flow, can reach the gas powder amount ratio that changes in the gas-powder flow, promptly regulate powder sending quantity.
The technological parameter of plastic spraying rifle of the present invention sees Table 1, and temperature range sees Table 2.
Table 1 gas pressure and air consumption
| Oxygen | Acetylene gas | High pressure gas | Boiling gas | Powder feeding gas | |
| Pressure, MPa | 0.3～0.5 | 0.05～0.1 | 0.4～0.6 | 0.4～0.6 | 0.4～0.6 |
| Air consumption, l/h | 220～450 | 200～350 | 600～1500 | 200～400 | 300～600 |
Table 2 temperature range
| Oxy-acetylene flame | High pressure draught | Gas powder mixed flow | |
| Temperature, ℃ | ≤3100 | 150～400 | 150～300 |
Embodiment:
Referring to accompanying drawing 1, oxygen and acetylene gas are controlled to adjust after mixing tube ［ 8 ］ enters nozzle ［ 11 ］ by oxygen valve ［ 6 ］ and acetylene valve ［ 7 ］ respectively, penetrate from oxy-acetylene mixed airflow exit portal ［ 15 ］, become a fire ring through igniting.
Open suspended powder control damper ［ 5 ］, high pressure draught enters powder tube ［ 2 ］ through passage ［ 4 ］, makes the powder ［ 1 ］ in the powder tube ［ 2 ］ produce boiling.
Open powder feeding air valve ［ 3 ］, the powder feeding gas that is arranged in ［ 19 ］ is injected mixing tube ［ 16 ］ by powder feeding gas nozzle ［ 18 ］, makes ［ 17 ］ to locate to produce negative pressure simultaneously.Boiling sprills ［ 1 ］ in the powder tube ［ 2 ］ pass through pipeline ［ 20 ］ under the effect of negative pressuren zone ［ 17 ］, enter negative pressuren zone ［ 17 ］, be mixed into mixing tube ［ 16 ］ with powder feeding gas, the centre bore (gas powder mixed flow exit portal) ［ 12 ］ from nozzle penetrates at last, becomes gas powder mixed flow.
Open " air curtain " control valve ［ 9 ］, pressure-air enters ［ 14 ］ through ［ 10 ］, penetrate from high pressure draught exit portal ［ 13 ］ at last, form " air curtain ", gas powder mixed flow and fire ring are separated, regulate air valve ［ 9 ］ and can change the gas density and " air curtain " thickness of " air curtain ", thereby regulate fire ring passes to plastic powders by " air curtain " temperature.
Employing epoxy type and two kinds of powder of polyester-type spray and contrast with the epoxy type coating of electrostatic spraying, analyze after tested, the coating performance that adopts flame-spraying epoxy type powder gained is the same with electrostatic spraying, but that the performance of polyester-type powder coating is also owed is poor, sees Table 3.
In the table 33＃Be that powder sending quantity is too little, spray time is oversize, and 1＃That the blow time is partially long.
Plastispray rifle of the present invention is not subjected to be sprayed the restriction at part size, shape, material and position, need not be advanced the stove heating by the spray part, equipment manufacturing cost is low, and is easy to carry, disassembling operation not on the main equipment in the open air, and the coating quality of gained and electrostatic plastic spraying is identical.
The Performance Ratio of table 3 employing different process gained coating
| Technology | Flame-spraying | Electrostatic spraying | |||
| Powder type | Epoxy type | Polyester-type | Epoxy type | ||
| Numbering | 1 ＃ | 2 ＃ | 3 ＃ | 4 ＃ | |
| Gloss, % | 80 | 89 | 59 | 55 | ≥80 |
| Thickness, μ | 13 | 10 | 15 | 20 | |
| Adhesive force, level | 2 | 2 | 2 | 2 | ≤2 |
| Impact strength, cm/kg | 35 | 40 | 40 | 40 | 40 |
| Elasticity, mm | 3 | 2 | 2 | 2 | ≤2 |
Claims (2)
1, a kind of oxy-acetylene flame plastispray rifle, it is characterized in that forming by nozzle, powder feeder and rifle body three parts, wherein, nozzle is made up of oxy-acetylene mixed airflow exit portal [15], gas powder mixed flow exit portal [12], high pressure draught exit portal [13], the mutual alignment of three kinds of fluid exit portals is that oxy-acetylene mixed airflow exit portal is positioned at outermost, gas powder mixed flow exit portal is positioned at the center, and the high pressure draught exit portal is positioned between the two; Powder feeder is by powder tube [2], and powder feeding air-flow input pipe [4] and suspended powder efferent duct [20] are formed; Five valves are arranged on the rifle body, be powder feeding air valve [3], suspended powder control damper [5], oxygen valve [6], acetylene valve [7], high pressure " air curtain " valve [9] and produce means for applying negative [17] to also have three air-flow input adapters [23,24,25] in addition on the rifle body.
2, according to the described plastispray rifle of claim 1, the diameter that it is characterized in that oxy-acetylene mixed flow exit portal is 0.2～2.0mm, and the diameter of gas powder mixed flow exit portal is 2～3mm, high pressure draught
Loophole has two kinds of shapes, i.e. circumferential weld shape and annular distance shape, and circumferential weld shape exit portal width is 0.5～3mm, annular distance shape exit portal aperture is 0.5～3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN88218743U CN2045674U (en) | 1988-12-28 | 1988-12-28 | Oxygen acetylene flame plastics powder flame plating gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN88218743U CN2045674U (en) | 1988-12-28 | 1988-12-28 | Oxygen acetylene flame plastics powder flame plating gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2045674U true CN2045674U (en) | 1989-10-11 |
Family
ID=4851150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN88218743U Withdrawn CN2045674U (en) | 1988-12-28 | 1988-12-28 | Oxygen acetylene flame plastics powder flame plating gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2045674U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103753826A (en) * | 2014-01-14 | 2014-04-30 | 延锋汽车饰件系统有限公司 | Double-color plastic skin forming method |
-
1988
- 1988-12-28 CN CN88218743U patent/CN2045674U/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103753826A (en) * | 2014-01-14 | 2014-04-30 | 延锋汽车饰件系统有限公司 | Double-color plastic skin forming method |
| CN103753826B (en) * | 2014-01-14 | 2016-01-06 | 延锋汽车饰件系统有限公司 | A kind of dual-color plastic covering forming method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |