Container cover and vacuum fresh-keeping container

Abstract

The invention provides a container cover and a vacuum fresh-keeping container. The container cover comprises a cover body. An air suction cavity is formed in the cover body and provided with the elastic top wall; a first through air hole is formed in the bottom wall of the air suction cavity; a first one-way valve is arranged on the first air hole; air of the first one-way valve flows from the interior of the container body into the air suction cavity; a second through air hole is formed in the side wall or the top wall of the air suction cavity; a second one-way valve is arranged on the second air hole, and air of the second one-way valve flows from the interior of the air suction cavity to the exterior of the air suction cavity. The vacuum fresh-keeping container comprises the body and the container cover arranged at the open end of the body. The container cover is simple in structure, small in size, long in service life, low in manufacturing and assembling cost, convenient to detachand easy to clean.

Description

technical field [0001] The invention relates to the field of vacuum equipment, in particular to a vacuum-pumpable container cover with a simple structure and a vacuum fresh-keeping container with the container cover. Background technique [0002] Containers are common daily necessities. Common containers include storage jars, storage boxes, storage boxes, fresh-keeping cups, fresh-keeping bottles, etc. Containers generally include a container body and a container cover. Put food, medicine, etc. into the container After being placed in the main body, the container lid is put on, which can well isolate the articles placed in the container main body and prevent dust, air, etc. from entering the container main body. Existing containers can be well sealed to prevent air from entering, so they play a certain role in the preservation of items, but there is a certain amount of air in the container itself, so it is impossible to ensure that the items in the container are in a vacuum ...

AI Technical Summary

Problems solved by technology

However, the structure of the vacuum pressing block is complicated, and the production and assembly costs are relatively high, which increases the overall cost of the storage tank

It is necessary to cooperate with the reset spring to reset the vacuum pressing block. The reset spring is prone to fatigue during repeated use, and the reset effect is reduced, which affects the use of the storage tank.

It is necessary to add lubricant between the edge of the vacuum pressing block and the inner wall of the chamber, and the lubricant will be lost during use, which will affect the smoothness of the cooperation between the vacuum pressing block and the chamber; when the liquid is stored in the tank The lubricant may also pollute the liquid; the vacuum cover needs to be cleaned after use, and the lubricant in the cover will affect the cleaning effect, and even make the user mistakenly think that the lubricant is the oil in the cover.

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