VALVE FOR BACK-FLUSHING OF MILK CANS IN MECHANICAL MILKING MACHINES

摘要

The rotary valve (5) may be set to one of three positions: milking, backwashing and cleaning. In the first two positions the connector stubs (11, 12, 13) are in sealed contact with the end faces (9 and 10) of the rotary valve (5) and between the half-casings (2, 3) which can move axially in relation to each other there is a channel (20) providing a connection between the interior (4) and the atmosphere. Leaks can thus flow away freely. Before the entire milking machine is rinsed with a cleaning solution, the rotary valve (5) is moved into the cleaning position shown on Fig. 3. In this position, a recess (22) in the end face (9) of the rotary valve (5) allows the half-casing (2) to move with respect to half-casing (3) into a sealing position. The cleaning solution flowing through the milking machine passes via the first connector stub (11) and the recess (21) into the interior (4) of the casing (1) and leaves the interior (4) via the recess (22) and the second connector stub (12). Here, both the interior (4) and the rotary valve (5) are deeply cleaned.