Rotary kinetic fluid motors or pumps – Working fluid passage or distributing means associated with... – Passage or casing attached removable liner or wear member
Patent
1981-06-05
1988-02-02
Hornsby, Harvey C.
Rotary kinetic fluid motors or pumps
Working fluid passage or distributing means associated with...
Passage or casing attached removable liner or wear member
415214, F01D 2526
Patent
active
047226641
ABSTRACT:
A lined pump is provided including a casing and cover assembly forming a chamber having an inlet and an outlet. The fluid contacted surfaces of the pump are lined with PFA resin. These linings may be formed by an injection or other suitable molding process and are restrained against undesirable movement by locking plates. The locking plates may take the form of perforated metal plates attached to the pump casing and cover through which the resin flows during molding so as to become embedded in areas of the liners and lock those areas in place. Proper placement of the locking plates provides both restrained and unrestrained liner areas which permit the dissipation of built up internal stresses in the resin material due to thermal and hydraulic forces. This avoids cracking and failure while preserving the dimensional stability of the liners.
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Hornsby Harvey C.
Stinson Frankie L.
The Duriron Company, Inc.
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