Double-valve vacuum pump with piston opening and closing control, container and method

Abstract

The invention provides a double-valve vacuum pump with piston opening and closing control, a container and a method, comprising a vacuum pump upper valve mechanism, a vacuum pump lower valve mechanism (7), a vacuum pump return spring (6), and a pump wall (10); the vacuum pump upper valve mechanism, the vacuum pump lower valve mechanism (7), and the inner wall surface of the pump wall (10) jointly define a buffer chamber (15), and the vacuum pump return spring (6) is located between the vacuum pump upper valve mechanism and the vacuum pump lower valve mechanism (7) . The invention has reasonable structure, simple assembly, can work stably and effectively, solves the stability problem of the airtightness of the upper part of the pump container, and ensures the stability problem of the vacuum pump in long-term storage.

Description

technical field [0001] The invention relates to a vacuum pump and a pump container, in particular to a double-valve vacuum pump with piston opening and closing control, a container and a method. Background technique [0002] The pump-type container adopts a vacuum pump, which uses the principle of a vacuum pump to generate a pressure difference to realize the flow of the contents (such as paste or fluid) in the container. [0003] In the prior art, the vacuum pump of the traditional pump container uses vacuum adsorption to suck out the contents in the container. However, the main disadvantages of traditional vacuum pumps and pump containers are: [0004] (1) The overall structure is unreasonable, the assembly is difficult, and the entire vacuum pump cannot work stably and effectively; [0005] (2) The design of the vacuum pump and pump container is unreasonable in terms of airtightness. During the process of the contents in the container being sucked from the container, th...

AI Technical Summary

Problems solved by technology

[0004] (1) The overall structure is unreasonable, the assembly is difficult, and the entire vacuum pump cannot work stably and effectively;

[0005] (2) The design of the vacuum pump and pump container is unreasonable in terms of airtightness. During the process of the contents in the container being sucked from the container, the air will come into contact with the contents. The contents of the container may flow back into the container, and the contents such as toothpaste (or other contents) stored in the container are easily oxidized after contact with air, resulting in dehydration and deterioration during long-term storage or shortening the shelf life of the contents

Images