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A spray gun for spraying polyurethane

A technology of spraying polyurethane and spray guns, which is applied in the direction of spraying devices and liquid spraying devices, which can solve the problems of inconvenient disassembly and cleaning, easy blockage of nozzles, complex structure, etc., and achieve the effect of simple structure, shortened distance and small size

Active Publication Date: 2018-07-27
浙江华创碳一智造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the structure of the polyurethane spray gun is relatively complicated, the volume is large, the nozzle is easily blocked, and it is very inconvenient to disassemble and clean

Method used

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  • A spray gun for spraying polyurethane
  • A spray gun for spraying polyurethane
  • A spray gun for spraying polyurethane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0023] Embodiment: a kind of spray gun for spraying polyurethane, as Figure 1-Figure 7As shown, it includes a gun body and a handle, and the gun body is provided with an air passage, a first passage, a second passage, a third passage, a fourth passage, an air transfer chamber and a compressed air chamber, and the third passage is connected with the first passage respectively. The first channel, the second channel, and the fourth channel are in communication, the air channel is in communication with the first channel, the handle is provided with a sixth channel, one end of the sixth channel is in communication with the third channel, and the sixth channel is in communication with the third channel. The other end of the passage communicates with the outside air; the compressed air chamber is provided with a piston, and the piston divides the compressed air chamber into a left compressed air chamber and a right compressed air chamber, the right compressed air chamber communicates...

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Abstract

A spray gun for spraying polyurethane belongs to the technical field of polyurethane foam material preparation. The invention has the advantages of simple structure, small size and convenient use. When the spray gun is in use, the isocyanate and the combined polyether enter the discharge channel through the respective first conveying channel and the second conveying channel respectively. The distance traveled by the combined polyether reduces the number of parts that need to be disassembled and cleaned when the spray gun is not in use. Moreover, when the spray gun is blocked, the valve assembly can be cleaned only by removing the one-way valve, which is very convenient to operate.

Description

technical field [0001] The invention belongs to the technical field of polyurethane foam material preparation, and in particular relates to a spray gun for spraying polyurethane. Background technique [0002] Polyurethane (abbreviated as PU in English) is a polymer produced by copolymerization of isocyanate and polyol. Foaming machine, also known as foam generator, is a device that can make a certain concentration of chemical raw materials into foam and condense into solid. Foaming machine is the core component of polyurethane foam processing equipment. The foaming machine mixes two different chemical raw materials (isocyanate and polyol) uniformly according to their respective proportions, and sprays them out under high pressure. The mixed raw materials will undergo violent chemical reactions when they meet air. The reaction produces a large amount of foam, so that its volume increases rapidly. After a period of time, the mixed raw materials exposed to the air condense int...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05B7/04B05B7/08
Inventor 相明华张军张慧江
Owner 浙江华创碳一智造有限公司