Negative pressure sealing structure and negative pressure sealing method and applications

A technology of sealing structure and sealing pressure, which is applied in applications, home appliances, kitchen appliances, etc., can solve the problem of laborious insertion/removal of sealing pistons, and achieve the effects of improving user experience, increasing convenience of use, and ensuring airtightness

Pending Publication Date: 2017-07-14
王晓东
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In vacuum mechanical devices, the sealing must be guaranteed, so it is bound to b...

Method used

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  • Negative pressure sealing structure and negative pressure sealing method and applications
  • Negative pressure sealing structure and negative pressure sealing method and applications
  • Negative pressure sealing structure and negative pressure sealing method and applications

Examples

Experimental program
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Embodiment 13

[0078] The sealing piston 9 in Embodiment 13 is arranged inside the cavity and slides along the inner wall of the cavity 2, and the sealing pressure between the side wall of the sealing piston and the sealing surface of the inner wall of the cavity is greater than or equal to zero. When the sealing pressure is equal to zero, it indicates that the outer diameter of the sealing piston is smaller than the inner diameter of the cavity or is in a critical state of contact and non-contact. When the sealing pressure is greater than zero, that is, the outer diameter of the piston is greater than the inner diameter of the cavity and forms a Sliding seal, the sealing surface of the cavity is located at the contact surface between the inner wall of the cavity and the piston, and the sealing piston is made of elastic or flexible porous material. Porous material can be any one in polymer sponge, foamed plastics, rubber sponge, is preferably closed cell material, promptly forms a plurality o...

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PUM

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Abstract

In a negative pressure sealing structure and a negative pressure sealing method, the cavity is under vacuum negative pressure during use and ambient air pressure during non-use, and the sealing body that cooperates with the cavity also changes with the pressure state in the cavity. Changes, and corresponding deformation occurs, so that the fit tightness between the sealing body and the cavity changes. When the cavity is in a negative pressure state, the sealing body is deformed so that the sealing pressure between the sealing surface of the cavity and the cavity is increased, and the airtightness is improved; when the cavity is in an ambient air pressure state, the sealing body returns to the initial state, and the sealing body and the cavity The sealing pressure between the sealing surfaces is reduced, and it is convenient for the user to separate the sealing body and the cavity. The vacuum food processor, vacuum fresh-keeping tank and vacuum press adopting the negative pressure sealing structure of the present invention, while ensuring the airtightness of the working state, improve the user's convenience of putting in and taking out food, and improve experience.

Description

technical field [0001] The invention relates to the technical field of food processing machinery, in particular to a negative pressure sealing structure, a negative pressure sealing method and its application. Background technique [0002] In the existing food processing process, the oxidation caused by food contact with air has become an important factor for nutrient loss. During the use of food processors or juicers, the degree of contact between food and air is more significant, resulting in greater oxidative loss of nutrients. [0003] In order to reduce the oxidation of nutrients in food, a vacuum food processor is disclosed in the prior art ZL201210139784.7 "Food Processor with Electric Air Pump and Vacuum Preparation of Food Liquid". The inside of the barrel forms a space for accommodating and processing food. During use, the electric air pump is used to evacuate the barrel to discharge the air in the barrel to reduce oxidation and nutrient loss during food processin...

Claims

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Application Information

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IPC IPC(8): A47J43/07A47J43/04A47J19/00
CPCA47J19/00A47J43/04A47J43/07
Inventor 王晓东
Owner 王晓东
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