Anti-backflow water tank device and closestool

By designing an anti-counterflow water tank device, the height difference between the inlet and overflow port of the water tank cover plate is solved, and the problem of water source flowing back into the water tank when cleaning the toilet is achieved is achieved to prevent the water source from flowing back to the tap water system, ensuring the safety of household water.

CN222632429UActive Publication Date: 2025-03-18XIAMEN OLT SCI & TECH ELECTRONICS DEVING
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Patent Information

Application Number
CN202420705009.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-08
Publication Date
2025-03-18
Estimated Expiration
2034-04-08

AI Technical Summary

Technical Problem

When cleaning the toilet, due to the siphon effect, the water source may flow backward back to the water tank body, causing the water tank body to become sewage, affecting the safety of household water use.

Method used

A water tank device is designed, including the water tank body and the water tank cover plate. The water tank cover plate is equipped with a water inlet and an overflow port. The water inlet is higher than the overflow port and the height difference is more than 20mm. If a siphon backflow occurs, water can flow out through the overflow port to avoid returning to the tap water system.

Benefits of technology

Effectively prevent the water source of the water tank body from flowing back to the tap water system, ensure the safety of household water, and discharge the return water through the overflow port to keep the water tank body clean.

✦ Generated by Eureka AI based on patent content.
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Abstract

The utility model provides an anti-backflow water tank device which comprises a water tank body and a water tank cover plate, the water tank body is provided with a first cavity and a second cavity, the water tank cover plate is used for closing an opening of the first cavity, the water tank cover plate is provided with a water inlet and an overflow port, the water inlet is higher than the overflow port, and the vertical height difference between the water inlet and the overflow port is more than 20mm. A water inlet valve assembly and a water pump are arranged in the second cavity, the water inlet valve assembly is connected with the water inlet and used for guiding an external water source into the first cavity, and the water pump is used for guiding water flow in the first cavity out of the water tank. The height difference between the water inlet and the overflow port of the water tank cover plate is more than 20mm, and backflow water cannot flow back to a tap water system through the water inlet, so that the safety of household water is ensured; if water enters the water inlet valve assembly all the time, the water can flow into the closestool body from the overflow opening of the water tank cover plate.
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