Dustproof barrel for spray gun

Abstract

The invention provides a dustproof barrel for a spray gun, and belongs to the technical field of spray guns. The invention solves the problem that an air pressure hole on the conventional barrel for the spray gun is easy to block. The dustproof barrel for the spray gun comprises a barrel with an opening and a barrel cover connected with the opening in a sealing way; the barrel cover is provided with an air pressure hole, and the middle of the barrel cover is provided with a connecting part vertical to the barrel cover; a feeding hole is formed in the connecting part; a suction pipe is arranged in the barrel; the lower end of the suction pipe is positioned at the bottom of an inner cavity of the barrel, and the upper end of the suction pipe is connected with the lower end of the feeding hole; the dustproof barrel also comprises a handle seat sleeved on the connecting part; the handle seat is provided with an air inlet which is communicated with the air pressure hole through a vent pipe; and an air inlet port of the air inlet faces downwards. The dustproof barrel for the spray gun has the advantages of preventing the air pressure hole on the barrel from being blocked and achieving better sealing effect on the barrel cover and the barrel.

Description

technical field [0001] The invention belongs to the technical field of spray guns, and relates to a material tank, in particular to a dustproof material tank of a spray gun. Background technique [0002] In the existing spray gun, the material tank is installed under the spray gun, and the mouth of the material tank is sealed and connected with the material tank cover. There is a suction pipe, the lower end of the suction pipe is located at the bottom of the material tank, and its upper end is connected to the lower end of the material passage. There is an air pressure hole on the cover of the material tank, and the air pressure hole is connected with the inner cavity of the material tank. The air pressure in the inner cavity of the material tank is consistent with the atmospheric pressure. The existing problem: Since the opening of the air pressure hole is facing upward and there is no cover above, when in use, dust particles in the atmosphere will easily enter the air pre...

AI Technical Summary

Problems solved by technology

The existing problem: Since the opening of the air pressure hole is facing upward and there is no cover above, when in use, dust particles in the atmosphere will easily enter the air pressure hole and cause the air pressure hole to block, blocking the external atmospheric pressure and the material. The connection of the inner cavity of the tank, so that the air pressure in the tank decreases with the reduction of raw materials in the tank. When the air pressure in the tank drops to a certain level, when the spray gun is working, the air pressure in the inner cavity of the spray gun gun and the inner cavity of the material tank The difference is very small and not enough to suck the material in the tank into the cavity of the spray gun body

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