Title:
DRAINAGE CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/109181
Kind Code:
A1
Abstract:
A drainage control device, comprising a body (1), an upper cover (2), a lower cover (3), a pressure relief cover (4), a diaphragm (5), and a reset member (20). the body (1) is provided with a water inlet channel (11), a drainage channel (12) and a water passing channel (13), and the water inlet channel (11) and the drainage channel (12) are both communicated with the water passing channel (13); the upper cover (2) and the drainage channel (12) define a drainage cavity (a), and the drainage cavity (a) is provided with at least one drainage end (b); the lower cover (3) and the water inlet channel (11) define a water inlet cavity (c), and the water inlet cavity (c) is provided with at least one water inlet end (d); the pressure relief cover (4) and the body (1) clamp the edge of the diaphragm (5); the diaphragm (5) and the water passing channel (13) define a water passage cavity (e), the diaphragm (5) and the pressure relief cover (4) define a back pressure cavity (f), and the back pressure cavity (f) is provided with at least one drainage port (g); the diaphragm (5) can be deformed, and the position where the water passage cavity (e) is communicated with the drainage cavity (a) is opened or blocked along with a pressure change of the back pressure cavity (f); the reset member (20) is provided in the back pressure cavity (f) for resetting the direction of the diaphragm (5) in which the communication between the water passage cavity (e) and the drainage cavity (a) is blocked; a water supplementing channel (h) is further provided between the back pressure cavity (f) and the water inlet cavity (c) to realize communication. The drainage control device has a drainage control function, can simplify a water storage structure of a toilet flushing system, and is low in costs.
Inventors:
HUANG BINGXING (CN)
ZHANG DONGSHENG (CN)
RAO SHENGJIN (CN)
ZHANG DONGSHENG (CN)
RAO SHENGJIN (CN)
Application Number:
PCT/CN2022/115099
Publication Date:
June 22, 2023
Filing Date:
August 26, 2022
Export Citation:
Assignee:
ECO XIAMEN TECH INC (CN)
International Classes:
F16K1/00; E03D1/34; F16K1/32
Foreign References:
| CN216589965U | 2022-05-24 | |||
| CN110185106A | 2019-08-30 | |||
| CN210684914U | 2020-06-05 | |||
| CN110056056A | 2019-07-26 |
Attorney, Agent or Firm:
XIAMEN SHINHWA PATENT & TRADEMARK AGENCY CO., LTD (CN)
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