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Piston pump for thick matter

A technology of mud and piston pumps, which is applied in the direction of pumps, liquid displacement machines, machines/engines, etc., to achieve the effect of improving the filling degree

Inactive Publication Date: 2009-04-15
PUTZMEISTER CONCRETE PUMPS GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Method used

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  • Piston pump for thick matter
  • Piston pump for thick matter
  • Piston pump for thick matter

Examples

Experimental program
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Effect test

Embodiment Construction

[0018] The twin-piston pump shown schematically in FIG. 1 is intended for conveying slurries with a large amount of solid matter, such as partially downed slurries, auger slurries or concrete.

[0019] The piston pump basically comprises a feed container 10, two delivery cylinders 16 connected on the feed container 10 via wall holes 14 through two ports 12 on its end face, two push-pull hydraulically accessible pumps in the delivery cylinder 16. The delivery piston 20 driven by the drive cylinder 18 and a water tank 22 arranged between each drive cylinder 18 and each delivery cylinder 16 . A pipe slide valve 21 is arranged in the feed container 10, the pipe slide valve with its inlet 26 can be alternately connected to the port 12 of the conveying cylinder, the piston of which carries out a compression stroke and opens the other conveying cylinder The piston of the other delivery cylinder performs a suction stroke, and its outlet 28 is connected to a pressure delivery line not ...

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Abstract

The invention relates to a piston pump for thick matter, in particular for high-solids sewage sludge, coal sludge and concrete. The piston pump has at least one delivery cylinder (16) which contains a motor-driven or hydraulically driven delivery piston (20) and which has an orifice (12) which communicates alternately with the interior of a material feed container (10) and with a pressure delivery line (30) in a slide-controlled manner in accordance with the movement of the delivery piston (20). In order to significantly increase the degree of filling of the at least one delivery cylinder (16), an annular nozzle (32) opening into the delivery cylinder (16) in the region of the orifice (12) is provided, and this annular nozzle (32) is connected to an external pressure line (34) to which a lubricant can be admitted.

Description

technical field [0001] The invention relates to a piston pump for mud, comprising at least one delivery cylinder comprising an electrically or hydraulically driven delivery piston, the delivery cylinder having a port which alternates in a slide valve-controlled manner according to the movement of the delivery piston It communicates with the inside of a feed container and with a pressure delivery pipeline. Background technique [0002] This type of piston pump is used for conveying solid-liquid mixtures with a high solids content, such as sedimentation slurries, coal slurries, bioslurries or concrete. Such slurries have a high internal friction, so that the fill of the delivery cylinder is often felt to be insufficient during the suction process. Known (EP-B-633863) in the piston pump of this type on the other hand, in order to reduce wall friction on the input end of pressure delivery pipeline, a lubricant is added into mud pipeline and pressure when the delivery of mud. b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B15/02
CPCF04B15/02
Inventor M·施塔贝尔
Owner PUTZMEISTER CONCRETE PUMPS GMBH
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