Expansion member of leak-proof water inlet pipe component

Abstract

The invention provides an expansion member of a leak-proof water inlet pipe component. The expansion member has the advantages of quick response of a valve mechanism, tight cut-off and closing, low raw material cost and convenience in material taking. The expansion member comprises a central pressure pipeline, an external shell, a PVC (Polyvinyl Chloride) pressure hose and a corrugated pipe, wherein the central pressure pipeline is externally wrapped by the external shell and the PVC pressure hose; the junctions of the external shell and the PVC pressure hose are buckled and firmly connected through an aluminum sealing pipe; the corrugated pipe is sleeved on an outer annular surface of the PVC pressure hose; a fixing member is sleeved outside the external shell; one end of the fixing member is packaged in the outer annular surface of the corrugated pipe; a cavity is enclosed by the fixing member and the external shell; and an inner interlayer cavity of the corrugated pipe is communicated with the cavity.

Description

technical field [0001] The invention relates to the structural technical field of water inlet pipes of washing appliances, in particular to an expansion part of an anti-leakage water inlet pipe assembly. Background technique [0002] The existing anti-leakage water inlet pipe assembly structure for washing machines, dishwashers and similar equipment, the interlayer space formed by the central pressure pipe, the shell, and the bellows is two completely sealed independent spaces, the interlayer space and the external environment space It is also sealed, so under normal circumstances, when water flows from the central pressure pipe, there is no water in the interlayer space. There is a set of valve mechanism installed inside the housing connected with the interlayer space. There is a part in the valve mechanism that will expand when it absorbs water. The part expands after absorbing water, thereby pushing the entire valve mechanism, so that the valve automatically closes a...

AI Technical Summary

Problems solved by technology

The material of the existing expansion part is wood pulp cotton, because the texture of wood pulp cotton after expansion is soft, it needs wood pulp cotton with an expansion rate of more than ten times as the raw material of the expansion part, in order to push the entire valve mechanism, so that the valve automatically closes and cuts off Water source, because the expansion part needs to have an expansion rate of more than ten times to push the valve mechanism, which makes the response of the entire valve mechanism slow; because the wood pulp cotton is soft, the cut-off is not tight; and the cost of wood pulp cotton with an expansion rate of more than ten times High, difficult to obtain materials

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