Hybrid spraying out-gun mixing chamber with adjustable wet and dry separating proportion

Abstract

The invention relates to a hybrid spraying out-gun mixing chamber with adjustable wet and dry separating proportion. The hybrid spraying out-gun mixing chamber comprises an outer ring sleeved outside an inner ring and being in threaded connection with the inlet end of the inner ring, wherein the outlet end of the outer ring adopts a tapered contraction structure; an annular space is formed between the internal face of the outer ring and the external face of the inner ring; a tapered ring fixed on the internal face of the outer ring through a cylindrical pin is arranged in the annular space; the inner ring, the tapered ring and the outer ring forms a tapered fan-shaped guiding space; the outlet end of the inner ring is provided with a tapered guider which forms a tapered annular outlet together with the conically-structured internal face of the outer ring; the tapered fan-shaped guiding space and the tapered annular outlet form a powder output path; an air cap is embedded at the inlet end of a mixing chamber main body, and the outlet end of the mixing chamber main body is connected with a gun head through a connection ring; one end of the air cap is connected with a spray gun and fixedly arranged at the inlet end of the inner ring, and a wet material output round hole and a small high-pressure atomizing air output hole are formed at the other end; and a pneumatic straight-through is formed at the inlet end of the outer ring in the circumferential direction. The hybrid spraying out-gun mixing chamber can be extensively applied in the field of surface spray.

Description

technical field [0001] The invention relates to a mixing chamber in the field of surface spraying, in particular to an external mixing chamber of a mixing spray gun with adjustable dry-wet separation ratio. Background technique [0002] With the development of modern industry, the demand for surface spraying is increasing and the requirements are getting higher and higher. Surface spraying has been widely used in heat insulation, metal structure surface anticorrosion and other technologies, and most functional coatings are Spraying is carried out by adding solid fillers into liquid solvents during the spraying process. In order to obtain a large volume ratio mixing of filler and solvent, the technology currently used is to mix the filler and atomized solvent at the outlet of the spray gun, then impact the sprayed surface at a certain speed, and finally adhere to the sprayed surface to form a composite coating. layer. It therefore relates to a mixing chamber outside the gun...

AI Technical Summary

Problems solved by technology

[0003] In the existing mixing nozzle or mixing chamber, in the process of adding filler, there are often phenomena such as uneven mixing of filler and solvent, unstable flow rate, low rate of filler scattering and adhesion, accumulation and dripping of solvent in the mixing chamber, etc., which directly affect the coating. Layer bonding, appearance, etc.

In addition, the structure of the existing mixing chamber is single, and the ratio of the dry and wet mixed materials cannot be adjusted.

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