Pipe junction switch for two-cylinder thick-material pump

Details Pipe junction switch for two-cylinder thick-material pump Pipe junction switch for two-cylinder thick-material pump

1990-02-20

1991-08-06

Smith, Leonard E.

Pumps

Expansible chamber type

Mechanically actuated distributor

417519, 417900, F04B 700

Patent

active

050372750

ABSTRACT:
A pipe switch for two-cylinder thick-material sludge pumps comprises a pivot pipe (1) pivotable in front of a wear plate (8). A wear ring (22) is disposed axially slidable to a limited amount against the spring force of a rubber-elastic sealing ring (3) on the cylinder-side end of the pivot pipe (1). At least one stabilization ring (26', 26"), made of steel, is connected and attached to the sealing ring (3). Said stabilization ring (26', 26") is disposed in the region of one of the two front faces of the sealing ring (3). This measure achieves a permanently sealing and wear-balancing effect even in case the sealing rings exhibit an elongated extended cross-sectional form in the axial direction.

REFERENCES:
patent: 4465441 (1984-08-01), Schwing
patent: 4472118 (1984-09-01), Schwing
patent: 4556370 (1985-12-01), Schwing
patent: 4653990 (1987-03-01), Schlecht

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