Adjustable wearplates rotary pump

Details Adjustable wearplates rotary pump Adjustable wearplates rotary pump

1988-10-18

1990-07-10

Smith, Leonard E.

Pumps

With condition responsive pumped fluid control

Bypass or relief valve controls venting by movable pump...

418134, 418135, 418206, F04B 4900, F04C 200

Patent

active

049403940

ABSTRACT:
A rotary lobed rotor pump has externally adjustable wearplates in the rotor casing juxtaposed to the parallel ends of rotating lobed rotors. Resilient members such as Belleville springs are adjusted by compression by means external of the rotor casing so that the springs move the wearplate(s) into a design clearance with the parallel rotor ends. No pump disassembly is required to accurately set the clearance. An internal pressure surge by-pass is provided which permits outward movement of either or both wearplates resulting in an increased gap with the rotor ends causing a decrease in the rate of rise in fluid pressure in the internal rotor casing cavities in effect causing rotor slippage.

REFERENCES:
patent: 2134153 (1938-10-01), Seyvertsen
patent: 3817667 (1974-06-01), Winkelstrater
patent: 4370110 (1983-01-01), Nagely

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