Multi-component polymer mixing spiral jet device

Abstract

The invention discloses a multi-component polymer mixing spiral jet device. The device comprises a screw mixing mechanism, a feeding mechanism and a spiral gas path jet mechanism, wherein, the spiral gas path jet mechanism comprises a beam gas path, a spiral gas path and a spiral jet flow plate arranged at a discharge port of the screw mixing mechanism; the spiral jet flow plate comprises a nozzle arranged in the center and a plurality of beam gas path holes which are circumferentially distributed by taking the nozzle as the circle center and are in communication with the beam gas path; a plurality of spiral gas path holes communicating with the spiral gas path are annularly distributed in the inner side wall of the nozzle and are converged to a port of the nozzle. According to the multi-component polymer mixing spiral jet device, the mixed multi-component polymer can be sprayed to the solid surface in a particle spiral jet flow mode, the jet flow amount is large and can reach 10g / s-30 g / s, the edge track of the formed jet flow conical surface is clean, the atomization splashing and particle reflection conditions cannot be generated, it can be guaranteed that the jet area is clean and tidy, and the device is suitable for being used when the solid surface is sprayed with a high-viscosity polymer coating.

Description

technical field [0001] The invention belongs to the technical field of coating spraying, and relates to a device for spraying a polymer coating on a solid surface, in particular to a multi-component polymer mixing spiral jet device. Background technique [0002] At present, the equipment used for polymer coating spraying basically adopts the following working method: first, at least two reactive polymer materials are completely mixed, and then the resulting mixture is sprayed in a straight line through a nozzle in the form of a thin tube. , the mixture is atomized with pressurized air and sprayed onto solid surfaces as a coating. But the equipment of above-mentioned mode of work often exists following deficiency when using: [0003] 1. It is prone to fogging reflection phenomenon. The equipment sprays the mixture onto the solid surface in the form of a straight line jet. After the atomized mixture contacts the solid surface, it is easy to reflect and splash to other positi...

AI Technical Summary

Problems solved by technology

The equipment sprays the mixture onto the solid surface in the form of a straight line jet. After the atomized mixture contacts the solid surface, it is easy to reflect and splash to other positions, which makes the surface of the final product easy to be dirty, and to a certain extent also causes waste of raw materials;

[0004] 2. During the spraying process, the position of the solid is easy to move

The equipment sprays the mixture in a straight line in the form of a thin tube, which has a relatively large impact on the solid surface. If the solid to be coated is thin and has a small mass, it is easy to cause the position of the solid to move during spraying, and the spraying position will change. The quality of the coating will be affected. Failure to meet the standard will eventually lead to product loss;

[0005] 3. The spraying is not in place, and the spraying edge is seriously atomized

First of all, the linear spraying structure of the equipment, when the solid to be sprayed is irregular in shape, and the angle between the spraying surface and the spraying line is less than 90°, it is prone to the problem of insufficient spraying, and it is difficult to spray the mixture on the solid surface uniformly and comprehensively. Non-planar parts; secondly, the mixture sprayed by the equipment is in the shape of a thin tube after atomization, and the mixture is sprayed on the solid surface in a circular distribution, and the distribution of the mixture particles in the spray width is extremely uneven, and the round edge is prone to severe atomization , when the spray boundary is not clear

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