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Thick matter piston pump

A material pump and piston technology, applied in the control field of thick material pump, can solve problems such as impossibility

Inactive Publication Date: 2007-04-11
FRIEDRICH WILH SCHWING GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the synchronous control of the rotating slides is mentioned, however, in the described technical situation, the continuous feeding of the pump and the control system delivery cylinder to the common feeding line is unpredictable and impossible

Method used

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Examples

Experimental program
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Embodiment Construction

[0042] Figure 1 shows a three-dimensional outline view of a thick substance pump 1 with two parallel delivery cylinders 3 and 5 placed next to each other, a prefill container 7, a switching valve 9, a collector or a Y-shaped pipe 19 And the brief part of the feeding pipeline. Said switching valve is located in the housing, or in the guide structure 11 , extending through the bottom of the prefilled container 7 . Near the bottom of the guide structure, on the side facing the delivery cylinders 3 and 5, a maintenance flap 13 is provided. Above said prefilled container, two control slides 15 and 17 are shown in a developed-like manner, which are intended to be movably inserted into the chamber-shaped guide structure 11 of the switching valve 9 forming its valve body. This will be detailed later.

[0043] Figure 2 shows only the delivery cylinder 3 of the thick matter pump 1, which is located at the front of the view, in its open (discharge) end portion. The piston associated w...

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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 (15L, 17L) 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.

Description

technical field [0001] The invention relates to a thick substance pump having the features of the preamble of patent claim 1 . In a broader sense, the invention also relates to the control of such thick matter pumps. Background technique [0002] Viscous substance piston pumps have long been used especially on construction sites to convey concrete. Typically, it is a hydraulically operated piston pump, most with two cylinders, that delivers the concrete through a hose or tube. Next, only concrete delivery is mentioned in a simplified sense. The invention is not limited to the application of concrete delivery pumps, but can also be applied to pumps for all similar thick substances. [0003] Such pumps have to fill a single feed line through two selectively filled cylinders and associated pistons. The respective filling cylinders are connected to the feed lines through a movable pipe adapter. Subsequently, the piston pushes out the concrete (pump stroke), while the parall...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B15/02
CPCF04B15/02F04B7/008F04B7/0053F04B9/109F04B53/162F05B2210/11F05B2260/60Y10S417/90
Inventor 曼弗雷德·伦哈特
Owner FRIEDRICH WILH SCHWING GMBH
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