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Miniature air pump and one-way valve for same

A one-way valve and air pump technology, used in pump components, variable capacity pump components, liquid variable capacity machinery, etc., can solve the problems of high processing requirements for structural parts, damage to the sealing effect, damage to the sealing effect, etc. Long life, simplified structure, good sealing effect

Active Publication Date: 2013-06-05
BEIJING CONST INSTR TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditionally designed one-way valves use springs and guide parts as pre-pressure to push the sealing parts to deform the sealing ring on the top to form a seal. The sealing of the cavity needs to increase the sealing ring of the cavity to form an overall sealing method. This kind of one-way valve requires 4 to 5 kinds of parts, resulting in high processing requirements for structural parts and relatively complicated installation, and the sealing effect will be destroyed after a period of time. The carbon steel wire will precipitate liquid after air compression, directly corroding the spring. After the stainless steel spring has been used for a period of time, the reduction in resilience directly leads to damage to the sealing effect

Method used

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  • Miniature air pump and one-way valve for same
  • Miniature air pump and one-way valve for same

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Experimental program
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Effect test

Embodiment Construction

[0014] The one-way valve of the present invention includes a cavity seal 1, an elastic arm 2, a metal gasket 3 and a sealing ring 4, wherein the cavity seal 1 is an annular structure, which is the external support and seal of the entire structure, and is installed on two valves that need to be sealed. Between the planes, a sealed cavity is formed, which is also used as the seal of the overall structure, and is made of elastic material; the elastic arm 2 is a strip structure extending inward from the cavity seal 1, and can be stretched by using the elasticity of the rubber. 2. The lower part is connected with the upper part of the cavity seal 1; the metal pad 3 is disc-shaped, and the upper annular slot 31 is used to insert the elastic arm 2 so that it is stuck in the slot 31 and connected with the upper part of the metal pad 2. The metal pad The bottom of 3 is provided with an annular groove 32, and sealing ring 4 is placed in it;

[0015] After the present invention is assemb...

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Abstract

The invention discloses a miniature air pump and a one-way valve for the same. The one-way valve is formed by assembling a cavity seal, an elastic arm, a metal gasket and a sealing ring together, wherein the elastic arm extends inwards from the cavity seal and is connected with the upper end of the metal gasket, and the sealing ring is fixed at the bottom end of the metal gasket. The one-way valve of the invention can be applied to the one-way sealing of gas up to 20 MPa, has the advantages of small space occupation, corrosion resistance, easy mounting, and the like, simplifies the one-way valve structure of the air pump and is suitable for modern manufacturing.

Description

technical field [0001] The invention belongs to the mechanical field, and in particular relates to a one-way valve structure used in a small air pump that can seal high-pressure gas, and a small air pump using the one-way valve. Background technique [0002] In the process of pressure instrument verification, high-pressure compressed gas needs to be generated. When the pressure reaches a certain pressure value, according to the principle of plunger-type air pump, a check valve needs to be installed in the air pump to seal off the high-pressure gas. Traditionally designed one-way valves use springs and guide parts as pre-pressure to push the sealing parts to deform the sealing ring on the top to form a seal. The sealing of the cavity needs to increase the sealing ring of the cavity to form an overall sealing method. This kind of one-way valve requires 4 to 5 kinds of parts, resulting in high processing requirements for structural parts and relatively complicated installation,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B39/10
Inventor 姜维利
Owner BEIJING CONST INSTR TECH INC
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