Pressure stabilizing pump and its casing sealing structure, water purifier

Abstract

The invention discloses a stabilized pressure pump, a pump casing sealing structure of the stabilized pressure pump and a water purifier. The pump casing sealing structure of the stabilized pressure pump comprises a pump casing seat, a pump casing, a diaphragm piece, an outgoing water pressure plate assembly and a sealing ring, wherein a groove is formed in the bottom of the pump casing; the diaphragm piece comprises a sealing bulge strip, and the sealing bulge strip extends between the outer side wall of an outgoing water pressure plate and the side wall of the groove and is connected with the outgoing water pressure plate and the pump casing in a sealed manner; the sealing ring is placed in a cavity formed by the groove, the sealing bulge strip and the outgoing water pressure plate and connected with the pump casing and the outgoing water pressure plate in a sealed manner, and the bottom surface of the sealing ring is contacted and connected with the bulge strip top surface of the sealing bulge strip; the hardness of the diaphragm piece is higher than that of the sealing ring and lower than that of the pump casing seat. With the adoption of the pump casing sealing structure of the stabilized pressure pump, one of the sealing ring and the sealing bulge strip is deformed or thinned under pressure, the other one can fill the deformed part immediately, the long-acting sealing effect can be realized, the sealing reliability is improved, the leakage probability is decreased, and the service life is prolonged.

Description

technical field [0001] The invention relates to the technical field of pressure stabilizing pumps, and more specifically, relates to a stabilizing pump, a pump housing sealing structure thereof, and a water purifier. Background technique [0002] With the improvement of living standards, water purifiers are widely used. In the water purifier, the pressure stabilizing pump is one of the important components, and the sealing performance of the stabilizing pump directly affects the reliability of the water purifier. [0003] Such as Figure 1-4 As shown, the sealing structure of the pump casing of the stabilized pressure pump is as follows: a stepped groove 11' is provided at the bottom opening of the pump casing 1', the upright wall surface of the upper stepped groove 111' of the stepped groove 11' is an inclined wall surface 112', and the piston valve body 2 The top surface of the base 21' is provided with a limiting convex strip 211', and the water-stop gasket 3' is covered...

AI Technical Summary

Problems solved by technology

However, the pump casing 1' is made of hard plastic. During the long-term operation of the regulator pump, the thickness of the rubber water-stop gasket 3' will be thinned if it is squeezed for a long time, and the outer convex strip 41' will be squeezed for a long time. Harmful deformation, so that between the base 21' and the water-stop gasket 3', between the pump casing 1' and the water-stop gasket 3', between the base 21' and the outer convex strip 41', between the pump casing 1' and the outer convex strip 41 ' creates a gap between

Every time the stabilized pump is started, the instantaneous water hammer pressure generated by tap water drives water into the gap, causing the pump body to leak, which in turn causes the motor to short circuit, burn out, etc., resulting in a shorter service life of the stabilized pump

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