Pilot valve
AssigneeWestfalia Separator AG
InventorOtto Krone
Life of this patent
Estimating the term…
Abstract
A pilot valve for controlling a pneumatically actuated main valve of a milking-system pulsator, has an electromagnet that it is alternately energized and de-energized displacing an armature back and forth between each end of a stroke. At one end, the armature seals an air-supply line and at the other end a vacuumizing line. The lines are accordingly alternately connected to a valve chamber, and the valve chamber communicates with the main valve through a control channel. The armature is connected to a diaphragm so as to provide axial guidance for the armature without friction. The diaphragm is made of resilient material and is interposed between the armature and the electromagnet such that, when the armature is at one end of its stroke, it seals off the air-supply line.
Claims5
A pilot valve for controlling a pneumatically actuated main valve of a milking-system pulsator, with an electromagnet that is alternately energized and de-energized, displacing an armature back and forth between each end of a stroke, an air-supply line is sealed by the armature at one end of the stroke and a vacuumizing line is sealed at the other end of the stroke and the lines are accordingly alternately connected to a valve chamber, the valve chamber communicates with the main valve through a control channel, a diaphragm of resilient material is connected to the armature such as to provide axial guidance for the armature without friction and is interposed between the armature and the electromagnet such that, when the armature is at one end of its stroke, it seals off the air-supply line.
Dependencies are inferred from the claim text.