Vacuum absorption device

Abstract

The invention discloses a vacuum absorption device comprising a body, an air extracting mechanism, a check valve, a sealing silica gel gasket and a pressure relief mechanism, wherein the body is provided with an air extracting cavity and a first adsorption wall, the adsorption wall is provided with a first through hole communicating with the air extracting cavity, the air extracting mechanism is used for extracting air in the air extracting cavity into the external environment, the check valve is matched with the first through hole so as to allow air to flow into the air extracting cavity fromthe first through hole in a single direction, the sealing silica gel gasket is provided with a second through hole corresponding to and communicating with the first through hole, one side of the sealing silica gel gasket is attached to the bottom face of the adsorption wall, the other side of the sealing silica gel gasket is provided with at least two sealing concave cavities, each sealing concave cavity communicates with the air extracting cavity through the second through hole and the first through hole which are corresponding, when the sealing silica gel gasket is adsorbed on the adsorption face, the sealing concave cavities do not communicate, the pressure relief mechanism is provided with a pressure relief channel enabling the sealing concave cavities to communicate with the outside,and the pressure relief channel can move between a sealing position and a pressure relief position so as to be opened or closed. The vacuum absorption device enables the adsorption function to be more reliable, adsorption can be easily relieved, the use effect is better, and the structure is simple.

Description

technical field [0001] The invention relates to an adsorption device, in particular to a vacuum adsorption device. Background technique [0002] The adsorption principle of the vacuum adsorption device is to make the adsorption device adsorb on smooth surfaces such as glass and ceramics by forming a vacuum between the adsorption device and the adsorption surface, and it is widely used. [0003] Vacuum adsorption devices have high requirements on the surface of the adsorption surface. When the surface of the adsorption surface is uneven, it is easy to cause seal failure. However, vacuum adsorption devices in the prior art are usually only equipped with a sealed cavity. Once gas enters If the concave cavity is sealed, the adsorption device will lose its adsorption function, and its function will be less reliable. In addition, in the prior art, when it is necessary to desorb the adsorption device, it often requires a lot of effort or more complicated operation steps to allow t...

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Problems solved by technology

[0003] Vacuum adsorption devices have high requirements on the surface of the adsorption surface. When the surface of the adsorption surface is uneven, it is easy to cause seal failure. However, vacuum adsorption devices in the prior art are usually only equipped with a sealed cavity. Once gas enters If the concave cavity is sealed, the adsorption device will lose its adsorption effect, and its function will be less reliable.

In addition, in the prior art, when it is necessary to desorb the adsorption device, it often requires a lot of effort or more complicated operation steps to allow the gas to enter the adsorption device to desorb.

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