Pump head pressing thick liquid backflow mechanism

Abstract

The invention relates to the technical field of daily chemical products, and discloses a pump head pressing thick liquid backflow mechanism. The thick liquid backflow mechanism comprises a shell, a liquid suction pipe is fixedly connected to the lower end of the shell, a spring is fixedly connected to the lower surface of an inner cavity of the shell, and a valve ball located in the middle of thespring is movably placed in the middle of the lower end of the inner cavity of the shell. According to the thick liquid backflow mechanism, through additionally arranging the liquid backflow mechanism, when thick liquid is extruded, a filling block moves downwards, the liquid in an adjusting cavity flows into a liquid conveying pipe through a liquid passing groove and is discharged outwards, whena pump head is released, the pump head automatically resets under the action of the spring, the filling block moves upwards, and a negative pressure cavity is formed in the adjusting cavity; and due to the fact that the liquid passing groove is separated from the middle of the inner cavity of the shell under the staggered condition, the adjusting cavity sucks fluid in an inner cavity of the liquidconveying pipe for negative-pressure filling, part of thick fluid at the extrusion end of the liquid conveying pipe can be sucked inwards, and no liquid remains at the extrusion end of the liquid conveying pipe after extrusion is completed.

Description

technical field [0001] The invention relates to the technical field of daily chemical products, in particular to a thick liquid return mechanism for pressing a pump head. Background technique [0002] The pump head is a common daily chemical product on the market, such as shampoo bottles, shower gel bottles, and detergent bottles. Flow out, easy to use. [0003] The working principle of pressing the pump head is that by applying pressure from the upper end, the upper end of the pump head moves downward, and the groove of the infusion tube in the middle of the pump head is opened, and under the action of squeezing the liquid in the pump head downward, the liquid is released from the pump head. The slot flows into the infusion tube, and the liquid in the infusion tube flows out. The operation is simple, but when using some relatively thick cosmetics or skin care products, the squeezed liquid will be automatically disconnected under the action of gravity. , and because the li...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies in the use of the existing pressing pump head proposed in the background technology, the present invention provides a thick liquid return mechanism for pressing the pump head, which has the advantages of liquid return and extrusion volume adjustment, and solves the above background technical issues raised in technology

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