Mixing chamber assembly of polyurea spray gun

Abstract

The invention provides a mechanical structure of a mixing chamber assembly of a polyurea spray gun and belongs to the technical field of spray polyurea elastomers. The mixing chamber assembly comprises a first mixing chamber assembly body and a second mixing chamber assembly body. The first mixing chamber assembly body is composed of four material conveying channels and a first mixing chamber. The second mixing chamber assembly body is composed of a second mixing chamber, a flow guide cylinder, four flow guide plates, a sleeve cover, four small screws, a baffle and six big screws. During operation of the spray gun, two components of a polyurea material are conveyed into the first mixing chamber through the material conveying channels for primary head-on collision mixing, instantly a strong chemical reaction occurs, then under the action of high pressure, the material rapidly passes through a flow guide channel to vertically enter the second mixing chamber for secondary head-on collision mixing, and a product generated after a complete chemical reaction is sprayed out. The two components of the polyurea material are subjected to head-on collision mixing twice and mixing in the flow guide channel once, so that the more sufficient reaction of the material is achieved, the mixing effect of the polyurea material is improved, and a better coating can be obtained.

Description

technical field [0001] The invention belongs to the technical field of spraying polyurea elastomers, and relates to a mechanical structure of a mixing chamber assembly of a polyurea spraying spray gun. Background technique [0002] Traditional polyurea spraying is that the isocyanate component and the amino compound component (hereinafter referred to as material A and material B respectively) produce mixed impact in the body of the polyurea spray gun, and the mixing of the two components is realized at the moment of impact, and a chemical reaction occurs. The reaction produces an elastomeric material. At present, the material mixing of general polyurea spraying guns adopts a mixing chamber and two material conveying channels. Because the mixing effect is not too high, the quality of the sprayed surface is poor, resulting in "orange peel" phenomenon, forming an uneven surface. Contents of the invention [0003] The object of the present invention is to provide a new type o...

AI Technical Summary

Problems solved by technology

At present, the material mixing of the general polyurea spraying gun adopts a mixing chamber and two material conveying channels. Because the mixing effect is not too high, the quality of the sprayed surface is not good, resulting in the phenomenon of "orange peel" and forming an uneven surface.

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