Push-type foam pump and method for controlling spray volume thereof

Abstract

The invention relates to a press-type foam pump and a discharge rate control method thereof and aims to solve the technical problems that conventional like products are inconvenient in discharge rate changing and controlling, and need to be further improved in structural design. The press-type foam pump is mainly characterized in that an outwardly protruding convex clasp ring and a tapered limit opening are respectively formed at the nesting parts between a valve rod and a pump body, downward movement of a piston driven by a duckbill is the stroke that a limit ring at the external diameter of the valve rod moves downwards to be propped against the limit opening of the pump body, the limit opening of the pump body is provided with a cylindrical glue site protruding toward the interior of the pump body, and the cylindrical glue site is subjected to integral injection molding with the limit opening and the pump body. Therefore, the discharge rate of the foam pump is changed only by changing the structure of the limit opening in the pump body on the basis of not changing the integral structure of the foam pump, that is, the discharge rate of the foam pump is controlled by controlling the downward movement of the piston via the length of the cylindrical glue site. Accordingly, sharing of product parts and the university of automatic assembly equipment are effectively improved, the production efficiency is improved, energy consumption is reduced, and the production cost is lowered.

Description

technical field [0001] The invention relates to a miniature foam pump, which is a press-type foam pump and a spray volume control method thereof. Background technique [0002] Foam pump is a kind of pump body that can produce foam spraying. According to its use and size, it is generally divided into industrial foam pump, fire fighting foam pump, and micro foam pump. Among them, the working principle of the micro foam pump is to use the liquid to form a certain negative pressure around the liquid column after being sprayed at high speed. The negative pressure generates to attract gas into the mixing part, so that the air and liquid are mixed again to form foam. This type of foam pump is mainly used in cosmetic bottle containers such as facial cleanser, such as the patent number ZL200620053700.8 published in Chinese patent documents, the date of authorization announcement was August 8, 2007, and the name of the utility model is "improved foam pump"; The pump includes a screw ...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the above-mentioned deficiencies, the object of the present invention is to provide the field with a push-type foam pump and its spray volume control method, so that it can solve the inconvenience of controlling the change of spray volume by improving the structure of components in the existing similar products, and the problem between components Technical problems of poor structural design of interference fit seals and movable fit seals

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