Patent ID: 11969675
Assignee: THREE-M INDUSTRY CO., LTD.
Field: Chemical engineering (Chemistry)
Classification: CPC B  F | IPC B  F

Claim 0:
1. An inline-type strainer comprising:
a housing having an inflow port opened at a first end in a left-right direction, an outflow port opened at a second end in the left-right direction, and an access hole opened in an upper part, the housing including a filter chamber inside extending from the inflow port toward the outflow port;
a lid configured to be attachable to and detachable from the housing to seal the access hole;
a screen disposed in the filter chamber and configured to filter a liquid flowing in through the inflow port;
a drain line extending from a primary side of the screen to an outside of the housing and configured to discharge filtered residues adhering to a filter surface of the screen to the outside of the housing; and
a drain valve configured to control opening and closing of the drain line, wherein
the screen is supported to be attachable to and detachable from the lid,
when the lid is removed from the housing, the screen is configured to be entirely taken out to the outside of the housing through the access hole,
a lid coupling mechanism coupling the housing and the lid to each other when the lid is attached to the housing is disposed between a bottom surface of the housing facing the filter chamber and a lower end of the lid,
a lower discharge flow path is disposed in a lower coupling element on a side close to the housing constituting the lid coupling mechanism,
an upper discharge flow path is disposed in an upper coupling element on a side close to the lid constituting the lid coupling mechanism,
when the lid is attached to the housing, a coupling state is established between the upper coupling element and the lower coupling element, the upper discharge flow path and the lower discharge flow path communicate with each other, and thus the drain line is constructed, and
when the lid is removed from the housing, the coupling state between the upper coupling element and the lower coupling element is released.