Two-cylinder pump for heavy flowable materials, such as...

Details Two-cylinder pump for heavy flowable materials, such as... Two-cylinder pump for heavy flowable materials, such as...

F - Mech Eng,Light,Heat,Weapons

04

B

103/156

F04B 1/02 (2006.01) F04B 7/00 (2006.01)

Patent

CA 1180946

S P E C I F I C A T I O N "A two-cylinder pump for heavy flowable materials, such as concrete" ABSTRACT OF THE DISCLOSURE A two-cylinder pump for heavy flowable materials, such as concrete, comprises a shutter mechanism which is pivotable across an apertured face plate, the shutter mechanism being sealed against the face plate by means of a cutting ring which is axially movable relatively to the shutter mechanism and is supported thereon with its rear side engaging a rectangular-section flexible rubber ring, whereby the cutting ring is urged resil- iently against the face plate. The cutting ring is located on the shutter mechanism, along a portion of its length, by a guide. A seating on the cutting ring includes an annular extension which partly overlaps the longer cross-sectional side of the flexible ring in the axial direction, and a seating on the shutter mechanism includes an annular extension which also partly overlaps the longer cross-sectional side of the flexible ring in the axial direction. The annular extensions partly overlap the ring from opposite sides thereof so that a part of the surface of the ring is left free between the exten- sions, and stops on the cutting ring and the shutter mechanism limit the extent to which the cutting ring is inserted in the guide for locating the cutting ring on the shutter mechanism.

394550

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