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Machine translation
1. (WO1980001594) TWIN-CYLINDER PUMP,IN PARTICULAR FOR PUMPING THICK LIQUIDS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1980/001594    International Application No.:    PCT/DE1980/000011
Publication Date: 07.08.1980 International Filing Date: 31.01.1980
IPC:
F04B 7/00 (2006.01)
Applicants:
Inventors:
Priority Data:
2903749 01.02.1979 DE
Title (EN) TWIN-CYLINDER PUMP,IN PARTICULAR FOR PUMPING THICK LIQUIDS
(FR) POMPE A DEUX CYLINDRES, EN PARTICULIER POUR LE POMPAGE DE LIQUIDES EPAIS
Abstract: front page image
(EN)The thick liquid pumps, in particular concrete pump comprise two cylinders leading to a chamber (1) and which suck alternately the product to be pumped from the chamber (1) and discharge the product into a discharge conduit through an S-shaped pipe (5) pivoting in the chamber (1). In order to achieve a sealing joint between a wear ring (20) supported by the pivoting pipe (5) and the backward wall (64) of the chamber (1) comprising the ports of the cylinders (2) and optionally reinforced by a pressure plate (22) and in order to ensure a uniform wearing on all the wearing ring surface (20), the bearing is arranged so that the pressure of the product to be pumped is converted into an axial force acting on the axially displaceable pivoting pipe (5). Hence, the bearing pressure of the wear ring (20) is increased. The wear ring (20) may rotate on the extremity of the pivoting pipe (5) which allows a very regular wearing of all the ring surface (20).
(FR)Les pompes a liquides epais, en particulier les pompes a beton comprennent deux cylindres debouchant dans une chambre (1) et qui aspirent alternativement le produit a pomper a partir de la chambre (1) et le refoulent dans un conduit de refoulement a travers un tuyau (5) en forme de S place de facon pivotante dans la chambre (1). Afin d"obtenir un joint etanche entre un anneau d"usure (20) porte par le tuyau pivotant (5) et la paroi arriere (64) de la chambre (1) comprenant les orifices des cylindres (2) et eventuellement renforcee par une plaque de pression (22) et afin de garantir une usure uniforme sur toute la surface de l"anneau d"usure (20), le palier est agence de facon que la pression du produit a pomper soit convertie en une force axiale agissant sur le tuyau pivotant (5) deplacable axialement. Ainsi, on augmente la pression d"appui de l"anneau d"usure (20). L"anneau d"usure (20) peut tourner sur l"extremite du tuyau pivotant (5) ce qui permet une usure tres reguliere de toute la surface de l"anneau (20).
Designated States:
Publication Language: German (DE)
Filing Language: German (DE)