Title:
HYDRAULIC SYSTEM WITH SUCTION/RETURN FILTER
Document Type and Number:
WIPO Patent Application WO/2013/045167
Kind Code:
A3
Abstract:
The invention relates to a hydraulic system, preferably for piloting and actuating a two-cylinder thick matter pump. The hydraulic system comprises a tank (68) for receiving hydraulic oil, a primary circuit having at least one hydraulic consumer (AH, MH) which has at least one primary pump (36, 38, 61, 70), which is loaded with hydraulic oil via a first suction line (42), and is connected on the outlet side to at least one first return line, and which has a suction/return filter (40) which communicates with the first suction line (42) on the outlet side and is loaded on the inlet side with return oil from the at least one return line. A special feature of the invention consists in that the first suction line (42) communicates with the tank (68) via a separate replenishing suction line (86) and a suction filter (66), wherein a replenishing suction valve (88) which is preloaded in the direction of the suction filter (66) is arranged in the replenishing suction line (86).
Inventors:
VEIT JAN-MARTIN (DE)
STASS MARKUS (DE)
MUENZENMAIER WERNER (DE)
RENZ HANS-PETER (DE)
STASS MARKUS (DE)
MUENZENMAIER WERNER (DE)
RENZ HANS-PETER (DE)
Application Number:
PCT/EP2012/065931
Publication Date:
June 27, 2013
Filing Date:
August 15, 2012
Export Citation:
Assignee:
PUTZMEISTER ENGINEERING GMBH (DE)
VEIT JAN-MARTIN (DE)
STASS MARKUS (DE)
MUENZENMAIER WERNER (DE)
RENZ HANS-PETER (DE)
VEIT JAN-MARTIN (DE)
STASS MARKUS (DE)
MUENZENMAIER WERNER (DE)
RENZ HANS-PETER (DE)
International Classes:
F15B21/041
Foreign References:
| DE19511482A1 | 1996-10-02 | |||
| EP2363189A1 | 2011-09-07 |
Other References:
"Hydraulik - Grundlagen und Komponenten", 30 June 2010, HYDAC SERVICE GMBH, TRAINING CENTER, 66280 Sulzbach (Saar), Germany, article MICHAEL GENSBERGER: "Hydraulik - Grundlagen und Komponenten", pages: 274 - 275, XP055060982
"Rücklauf-Saugfilter RKM. Die neue Generation", 1 April 2010 (2010-04-01), 66280 Sulzbach (Saar), Germany, pages 1 - 10, XP055060984, Retrieved from the Internet [retrieved on 20130424]
"Rücklauf-Saugfilter RKM. Die neue Generation", 1 April 2010 (2010-04-01), 66280 Sulzbach (Saar), Germany, pages 1 - 10, XP055060984, Retrieved from the Internet
Attorney, Agent or Firm:
WOLF, Eckhard et al. (Hauptmannsreute 93, Stuttgart, DE)
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