Pumps – Expansible chamber type – Having pulsation dampening fluid receiving space
Patent
1986-12-08
1988-01-26
Croyle, Carlton R.
Pumps
Expansible chamber type
Having pulsation dampening fluid receiving space
417273, 138 30, F04B 1100
Patent
active
047214449
ABSTRACT:
A high pressure fluid handling pump of the type having a drive shaft for connection to a drive motor where the drive shaft extends longitudinally through a pulsation dampener affixed to the pump's housing. The pulsation dampener comprises a cup-shaped housing having a pump shaft receiving bore extending through an end wall thereof and which, when secured to the motor housing, defines a hollow chamber in fluid communication with the pump's outlet. Disposed within the hollow chamber of the pulsation dampener housing and concentric with the motor's shaft is a rigid baffle member. Surrounding that is a tubular diaphragm formed from an elastomeric material of a predetermined durometer hardness, the tubular diaphragm effectively dividing the hollow chamber into two compartments isolated from one another. One compartment is exposed to the pressure surges occurring in the fluid being pumped through slits formed in the baffle member and the other compartment is pressurized by a compressible fluid to a predetermined pressure value.
REFERENCES:
patent: 2875788 (1959-03-01), Pier
patent: 3292733 (1966-12-01), Everett et al.
patent: 3378036 (1968-04-01), Clayton
patent: 4033707 (1977-07-01), Stutzman
patent: 4381179 (1983-04-01), Pareja
patent: 4571159 (1986-02-01), Beardmore
Croyle Carlton R.
Haugen Orrin M.
Hypro Corp.
Niebuhr Frederick W.
Nikolai Thomas J.
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