Multi-level expansion cavity sprayer
A technology of expanding cavity and nozzle, which is applied to spray devices, spray devices, chemical instruments and methods, etc., can solve the problems of low cleaning efficiency, easily damaged surface, incomplete dust removal, etc. simple effect
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[0015] The present invention will be further described below in conjunction with the accompanying drawings, but the present invention is not limited to the following examples.
[0016] As shown in the figure, a multi-stage expansion cavity spray head includes a front casing 1, a rear casing 2 and a gasket 3 between the front casing and the rear casing, and the front casing, the rear casing and the gasket pass through The connecting piece 4 (usually a screw) is fixedly connected. The gasket is in the shape of a "door" surrounded by three sides, and the length and width are suitable for the front and rear shells. After the gasket is installed, a certain gap is formed between the front and rear shells as the airflow channel 31, and the opening side of the gasket is used as the airflow channel. Air outlet 32. A rectangular groove is formed on the side of the front housing facing the gasket. After the front housing and the rear housing are fixed, the rectangular groove forms an ai...
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