WORKING FLUID LIQUID MEDIUM TANK WITH BUILT-IN VENT VALVE AND/OR AIR RELIEF VALVE Russian patent published in 2017 - IPC B60K15/35 F16K24/04 

FIELD: machine engineering.

SUBSTANCE: working liquid medium tank (1) comprises a vent valve and/or an air relief valve comprising a hollow valve body (10) fixed in the inner region of the working liquid medium tank. The inner region (11) of the body (10) is in fluid communication with the vent line (5) through the vent (3). The region (11) is in fluid communication with the inner region of the working liquid medium tank through at least one vent (13). The vent valve and/or the air relief valve comprises a valve body (20) located in the region (11). In the installed position of the working liquid medium tank (1), the body (20) is at a distance from the vent (3) when the level of the working liquid inside the working liquid medium tank (1) is below the locking level, whereby the body (20) is located in the open position. The region (11) and the vent line (5) are in fluid communication. In the installed position of the working liquid medium tank (1), the body (20) is lifted due to the working liquid in the region (11), so that the body (20) is in the closed position and closes the vent (3) when the working liquid level in the working liquid medium tank (1) is above the licking level, whereby the region (11) and the vent line (5) are not in fluid communication through the vent (3). The body (10) is formed integrally with the working liquid medium tank wall (2). The ventilation hole (3) is formed as a through hole (3) through the working liquid medium tank wall (2). The body (20) can be inserted into the region (11) through the opening (16) for insertion in the body (10). The body (20) comprising a holding device (23; 14, 24) by means of which the body (20) is held movable in the body (10). The holding device (23) comprises an engaging device (23) that can pass through the vent (3) into the vent line (5) from the region (11) in a process involving resilient deformation of the engaging device (23). The engaging device (23) located in the vent (3) is engaged by the wall (2) of the working liquid medium tank surrounding the vent (3).

EFFECT: improved working liquid medium tank, which can be manufactured faster and easier, different locking heights can be achieved in a particularly simple manner.

16 cl, 4 dwg