High-polymer-material external spring spray gun

Abstract

The invention discloses a high-polymer-material external spring spray gun, which comprises a gun body, a lower cover case and a handle, wherein the front end of the handle is connected with a piston cylinder, a piston is matched in the piston cylinder, the front end of the gun body is fixedly connected with a carding head through a head cap, the upper end of a trigger is provided with a reverse bent hook to realize lap joint with a concave pit formed in the middle part of the gun body, the middle part of the trigger is connected with an ejecting rod, the end part of the ejecting rod is provided with a lug boss and is rotationally connected with a concave mortar of the piston, a U-shaped spring is adopted, the branch end part of the spring is propped and pressed in a sunk pit formed in the back side of the trigger, the bottom of the spring is positioned outside the piston cylinder and is propped at the upper end of the handle, the bottom of the handle is connected with a bottle cap and a bottle, a sucking pipe is arranged in the bottle, the top of the bottle cap is connected with a marble seat, the marble seat is provided with a center step hole, the upper end of the sucking pipe is connected with the lower section of the center step hole, an upper end opening of the sucking pipe is a marble seat hole, a marble covers the marble seat hole in a separable way, the top of the marble sea is provided with a rib, the upper section of the center step hole is connected with the bottom of the piston cylinder, a passage is formed in the bottom of the piston cylinder and is communicated with the center through hole of the gun body, the front end of the through hole corresponds to the carding head, a gap is formed between the front end of the through hole and the carding head, and a thin sheet is arranged in the gap and movably covers the center through hole. The high-polymer-material external spring spray gun is used for products such as domestic gardening products.

Description

technical field [0001] The invention belongs to the technical field of spray guns, in particular to a hand-held spray gun. Background technique [0002] Spray gun, referred to as spray gun, its function is mainly to atomize the liquid, widely used in daily care products and industrial production, its working principle is to increase the pressure on the liquid stored in the bottle through the transmission mechanism, so that the pot The internal liquid is ejected from the nozzle of the spray gun through the control device at high speed, and the liquid is atomized during the ejection process to meet the use requirements. However, the structure of the existing spray guns has the defect that the design of the piston and the trigger return spring is not appropriate. Feel tired easily. [0003] For example, Chinese patent ZL201020111613.X, a utility model patent titled "spray gun head", discloses a spray gun head, which relates to the field of spray equipment, which includes a fo...

AI Technical Summary

Problems solved by technology

The reset of the piston and trigger of this spray gun is achieved by the cylindrical helical compression spring built in the piston barrel. As mentioned above, the built-in spring has inconvenience in installation, maintenance and adjustment, and the operation force of the trigger is large, which makes the user feel tired easily. Defects

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