MAGNET CONTROLLED WEAR RESISTANT RELIEF VALVE OF DISCRETE ACTION (VERSIONS) Russian patent published in 2010 - IPC F16K31/08 F16K17/04 

FIELD: machine building.

SUBSTANCE: valve consists of case, of shut off element with rod, of spring, of seat, of washer out of magnet material on rod, of permanent magnets, of magnetic conductors on both sides of washer, of throttle in form of throttling disk in pass-through channel of seat, of collar out of elastomer, and of spacer out of non magnetic material between magnetic conductors. The throttle is rigidly coupled with the shut-off element. The collar is secured on the seat. One of magnetic conductors is made in form of a threaded bushing and a threaded nut in it. The bushing with the nut is made as a solid upper magnetic conductor with an adjusting screw and a packing intermediate insertion. Upper permanent magnets are installed above the washer in a bore of the upper magnetic conductor. Lower disk permanent magnets are installed in a recess of the lower magnetic conductor under the washer. The permanent magnets with their opposite poles face poles of the upper and lower magnetic conductors and are arranged around circumferences with setoff one relative to another. A bearing bushing out of antifriction material is positioned in the lower magnetic conductor. A damper out of elastic polymer is installed in the case. The shut-off element, throttling disk and the spacer are made out of elastic, anti-friction polymer with low adhesion to paraffin. Versions of the valve design include various arrangements of the permanent magnets in recesses of the magnetic conductors.

EFFECT: valve reliable in operation with durable service life.

3 cl, 5 dwg