Mechanical time delay

By designing a cylindrical cavity structure for the mechanical delay device, water flow delay is achieved using pressure difference, which solves the problem that existing delay devices require electric drive, and realizes a low-cost, long-life delay control effect, thereby improving the flushing effect of bathroom drain valves.

CN116989164BActive Publication Date: 2026-09-08FUJIAN LENGTZ TECH CO LTD
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Patent Information

Application Number
CN202210437086.9
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-04-25
Publication Date
2026-09-08
Estimated Expiration
2042-04-25

AI Technical Summary

Technical Problem

Existing delay mechanisms for bathroom drain valves require periodic battery replacements, resulting in high costs, high failure rates, and short lifespans. Furthermore, they cannot automatically open one drain valve after a certain period of time once the other has opened.

Method used

A mechanical timer was designed, which utilizes a cylindrical cavity structure consisting of a front cover, a rear cover, a tubular valve core assembly, and an elastic element to achieve water flow delay through pressure difference, ensuring that after one drain valve is opened, another drain valve will automatically open after a period of time, without the need for electric drive.

Benefits of technology

It achieves low cost and long lifespan of the delay device, and enables delayed control of the drain valve without the use of electricity, thus improving the flushing effect.

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Abstract

The application discloses a mechanical time delay device, and relates to the technical field of bathroom time delay devices, which is characterized by the following steps: a tubular valve core assembly, a one-way valve and various types of channels are arranged, so that when the first drain valve is opened, a pressure difference formed in the mechanical time delay device pushes the tubular valve core assembly to move to a certain position, and in the moving process, water in the mechanical time delay device flows to the first drain valve through the various types of channels, and water in the second drain valve also flows to the first drain valve through the various types of channels, so that the second drain valve is opened due to the pressure difference; the mechanical time delay device is arranged so that after the first drain valve is opened, the second drain valve is automatically opened after a certain period of time, the time delay device does not need to be powered, and the overall cost is relatively low.
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