Homogenizing apparatus having magnetostrictive actuator assembly

Details Homogenizing apparatus having magnetostrictive actuator assembly Homogenizing apparatus having magnetostrictive actuator assembly

1991-11-26

1993-06-08

Cohan, Alan

Fluid handling

Processes

Involving pressure control

25112904, 25112906, G05D 1620

Patent

active

052170373

ABSTRACT:
A homogenizer comprises a homogenizing valve mounted to a pump block. The homogenizing valve includes a valve seat and a valve member positioned adjacent to the valve seat forming a gap through which fluid is expressed during homogenization. The homogenizer also comprises magnetostrictive actuator assembly which maintains a process pressure by controlling the size of the gap. The actuator assembly includes a magnetostrictive member which is coupled to the valve member and a generator for applying a magnetic field to the magnetostrictive member. The presence of the magnetic field produces magnetostriction of the magnetostrictive member which causes actuation of the valve member, thereby adjusting the size of the gap.

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Murray, Charles J. "Magentostrictive Rods Aid Transducer, Actuator Design" Design News, Jun. 6, 1988, pp. 140-141, (Circle No. 247).

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