Patent ID: 11879329
Assignee: CHINA UNIVERSITY OF GEOSCIENCES (BEIJING)
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 2:
3. The device according to claim 2, wherein a valve seat sealing surface of the distributing valve seat is a cylindrical surface, and a valve element sealing surface of the distributing valve element is a cylindrical surface,
wherein the distributing valve element rotates along an attaching surface between the valve seat sealing surface and the valve element sealing surface;
wherein a first upper valve hole, a second upper valve hole and a third upper valve hole are sequentially formed on the valve element sealing surface in a circumferential direction thereof, and a width of the first upper valve hole, a width of the second upper valve hole and a width of the third upper valve hole are not equal to one another.