EP 0389785 B1 19940914 - Two-cylinder-slurrypump with piston-accumulator.
Title (en)
Two-cylinder-slurrypump with piston-accumulator.
Title (de)
Zweizylinder-Dickstoffpumpe mit Kolbenspeicher.
Title (fr)
Pompe à pistons à deux cylindres pour liquides épais avec accumulateur à piston.
Publication
Application
Priority
DE 3910189 A 19890329
Abstract (en)
[origin: EP0389785A2] On a two-cylinder slurry pump with piston accumulator which is filled during pumping of the slurry by the pumping cylinders and emptied by the hydraulically controlled accumulator piston between the strokes of the pumping pistons into the pumping pipeline in order to prevent the drop in pressure and incorrect delivery quantity in the pumping pipeline, it is proposed according to the invention that a bilaterally hydraulically actuatable working piston (8) serve for hydraulic control (2) of the accumulator piston (10), which working piston is controlled with the pumping cylinders and whose limit positions are fixed on the accumulator drive cylinder (7) with the limit positions of the accumulator piston (10) when the accumulator cylinder (4) is fully emptied and when it is filled. <IMAGE>
IPC 1-7
IPC 8 full level
F04B 11/00 (2006.01); F04B 9/105 (2006.01); F04B 15/02 (2006.01)
CPC (source: EP KR)
F04B 9/08 (2013.01 - KR); F04B 9/105 (2013.01 - EP); F04B 15/02 (2013.01 - EP)
Citation (examination)
PATENT ABSTRACTS OF JAPAN, unexamined applications, Sektion M, Band 4, Nr. 132, September 17, 1980, The Patent Office Japanese Government, Seite 45 M 32, Kokai-Nr. 55-87867
Designated contracting state (EPC)
AT BE CH DE ES FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0389785 A2 19901003; EP 0389785 A3 19910116; EP 0389785 B1 19940914; AT E111564 T1 19940915; AU 5232990 A 19901004; AU 633550 B2 19930204; CA 2013356 A1 19900929; DD 296992 A5 19911219; DE 3910189 A1 19901004; DE 59007097 D1 19941020; ES 2063180 T3 19950101; FI 901568 A0 19900329; JP H02283872 A 19901121; KR 900014753 A 19901024; RU 2045686 C1 19951010; ZA 902341 B 19901228
DOCDB simple family (application)
EP 90103245 A 19900220; AT 90103245 T 19900220; AU 5232990 A 19900328; CA 2013356 A 19900328; DD 33916290 A 19900328; DE 3910189 A 19890329; DE 59007097 T 19900220; ES 90103245 T 19900220; FI 901568 A 19900329; JP 8473690 A 19900329; KR 900004457 A 19900329; SU 4743431 A 19900328; ZA 902341 A 19900327