Title:
高粘度材料用ピストンポンプ
Document Type and Number:
Japanese Patent JP2007524036
Kind Code:
A
Abstract:
The invention relates to a multi-cylinder thick matter pump ( 1 ) which is used to continuously deliver especially concrete. Said thick matter pump comprises at least two delivery cylinders ( 3, 5 ) which transport the thick matter from a prefill tank ( 7 ) into a delivery pipe and a reversing valve ( 9 ) for alternately linking the delivery cylinders with the delivery pipe. The invention is characterized in that the reversing valve ( 9 ) comprises two pilot valves ( 15, 17 ) which can be displaced in a substantially translatory manner. Every pilot valve ( 15, 17 ) comprises a straight pipe section ( 15 L, 17 L) for linking the respective assigned delivery cylinder ( 3, 5 ) with the delivery pipe. Said pipe section can be linked with a manifold ( 19 ) in a pipe position downstream of the delivery cylinder. The invention also relates to a method for operating the inventive thick matter pump for continuous delivery.
Inventors:
Renhart, Manfred
Application Number:
JP2007500080A
Publication Date:
August 23, 2007
Filing Date:
January 26, 2005
Export Citation:
Assignee:
Schwing Game Behr
International Classes:
F04B15/02
Attorney, Agent or Firm:
Yuichi Yamada
Masakazu Noda
Masakazu Noda