A self-priming drain valve core

By designing a self-priming drain valve core and using a switching rod to control the movement of the valve block, the accumulated water is automatically discharged, solving the problem of water accumulation in shower equipment, simplifying the structure, reducing production costs, and protecting the equipment from damage.

CN224283607UActive Publication Date: 2026-05-26NINGBO FENGHUA ALFANO VALVE CORE TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NINGBO FENGHUA ALFANO VALVE CORE TECHNOLOGY CO LTD
Filing Date
2025-07-07
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Water accumulation in the connecting pipes of existing shower equipment can easily breed bacteria, produce scale and ice, leading to equipment damage. In addition, the existing valve core structure is complex and has high production costs.

Method used

A self-priming drain valve core was designed. The valve block is moved by a switching rod to automatically drain the accumulated water. The connecting channel is connected to the inlet, outlet and drain in different positions, respectively, and the accumulated water is discharged by gravity.

Benefits of technology

The valve core structure has been simplified, production costs have been reduced, and water accumulation in connecting pipes has been effectively prevented, bacterial growth and icing have been prevented, thus protecting the equipment.

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    Figure CN224283607U_ABST
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Abstract

This utility model relates to a self-priming drain valve core, belonging to the field of valve core technology. It includes a housing, with a switching rod at one end. An inlet, an outlet, and a drain outlet are located on the side of the housing away from the switching rod. A reciprocating movable valve block is located inside the housing. The switching rod extends into the housing and is fixedly connected to the movable valve block. A connecting channel is located on the side of the movable valve block near the outlet. When the movable valve block moves to the side near the inlet, the connecting channel connects to the inlet and outlet; when the movable valve block moves to the side near the drain outlet, the connecting channel connects to the outlet and drain outlet. In this design, pushing the switching rod moves the internal movable valve core, thus controlling the water flow from or off the top spray nozzle. When the valve core is closed, accumulated water inside the pipe connected to the top spray nozzle is automatically drained, preventing water accumulation inside the pipe.
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