EP 1727981 B1 20070718 - DEVICE AND METHOD FOR CONTROLLING A THICK MATTER PUMP
Title (en)
DEVICE AND METHOD FOR CONTROLLING A THICK MATTER PUMP
Title (de)
VORRICHTUNG UND VERFAHREN ZUR STEUERUNG EINER DICKSTOFFPUMPE
Title (fr)
DISPOSITIF ET PROCEDE DE COMMANDE D'UNE POMPE A PATES
Publication
Application
Priority
- EP 2005002896 W 20050318
- DE 102004015419 A 20040326
Abstract (en)
[origin: WO2005093253A1] The invention relates to a device and a method for controlling a two-cylinder thick matter pump comprising delivery pistons that are actuated by means of a hydraulic reversing pump (6) and hydraulic drive cylinders that are controlled by said pump in a push-pull manner. For each pressure stroke, the delivery cylinders (50, 50') are connected to a delivery line (58) by means of a pipe junction (56). At the end of each delivery stroke, a reversal process of the pipe junction (56) and the reversing pump (6) is triggered. The aim of the invention is to achieve a reliable operation even of single-circuit two-cylinder thick matter pumps. To this end, the pipe junction comprises a position transmitter responding to the pivoting position thereof. According to the invention, at least two cylinder switching sensors are arranged on the working cylinders at a distance from each other, responding to the passing pistons of the drive cylinder, and/or a pressure sensor responding to the pressure course at the high-pressure outlet of the reversing pump is provided. The computer-assisted reversing device comprises a control routine responding to output signals of the position transmitter and to output signals of the cylinder switching sensors and/or the pressure sensors, enabling the programmed control of a control body for adjusting the flow quantity and direction of the reversing pump, and a reversing body arranged in the hydraulic branch of the pipe junction.
IPC 8 full level
F04B 7/02 (2006.01); F04B 9/117 (2006.01); F04B 15/02 (2006.01); F04B 49/06 (2006.01)
CPC (source: EP KR US)
F04B 7/02 (2013.01 - KR); F04B 9/00 (2013.01 - KR); F04B 15/00 (2013.01 - KR); F04B 15/02 (2013.01 - EP US); Y10S 417/90 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2005093253 A1 20051006; AT E367524 T1 20070815; CN 100416095 C 20080903; CN 1788159 A 20060614; DE 102004015419 A1 20051013; DE 502005001073 D1 20070830; EA 007293 B1 20060825; EA 200501844 A1 20060428; EP 1727981 A1 20061206; EP 1727981 B1 20070718; ES 2290897 T3 20080216; JP 2007530855 A 20071101; JP 4839306 B2 20111221; KR 101148600 B1 20120525; KR 20060127383 A 20061212; UA 81498 C2 20080110; US 2006245943 A1 20061102; US 7611332 B2 20091103
DOCDB simple family (application)
EP 2005002896 W 20050318; AT 05716192 T 20050318; CN 200580000378 A 20050318; DE 102004015419 A 20040326; DE 502005001073 T 20050318; EA 200501844 A 20050318; EP 05716192 A 20050318; ES 05716192 T 20050318; JP 2007504321 A 20050318; KR 20067009231 A 20050318; UA A200512189 A 20050318; US 55893905 A 20051201