One-man-pipe type centralized lubrication apparatus.

摘要

The invention relates to a one-main-pipe type centralized lubrication apparatus having a pump device (100), one main oil feed pipe (200) and a plurality of distributors (300), wherein the pump device (100) is provided with a depressurization passage (23) for opening a discharge passage (6) connected to the main pipe (200) into a tank (4) and a depressurization valve (24), and a motor (2) for driving a pump element (3) of the pump device (100) is made normally and reversely rotatable, so that the depressurization valve (24) is operated in association with the motor (2) and, when the motor (2) normally rotates, the depressurization valve (24) is controlled to be closed and, when the motor (2) rotates reversely, the depressurization valve (24) is controlled to be open, thereby enabling controlled depressurization. <IMAGE>