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Centrifugal pump comprising a comminuting assembly

A centrifugal pump, system connection technology, applied in the direction of pumps for special fluids, pumps, components of pumping devices for elastic fluids, etc., can solve the problems of leaking, poor shredding characteristics, and very expensive processing.

Pending Publication Date: 2019-08-13
KSB AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular the machining of the contact surfaces of fixed components is very expensive and expensive
Defects in the quality of the contact surfaces result in poorer shredding properties of the system and can also sometimes lead to leaks

Method used

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  • Centrifugal pump comprising a comminuting assembly
  • Centrifugal pump comprising a comminuting assembly
  • Centrifugal pump comprising a comminuting assembly

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0029] figure 1 The plant is shown in an exploded view with a centrifugal pump integrated into the waste water lifting plant. The wastewater lifting device includes a container 1 . In an embodiment, said container 1 is made of plastic. The container is designed as a collection container for pressure-free operation. The waste water is temporarily stored and then conveyed into the waste water channel. It has proven to be particularly advantageous if the nominal volume of the container 1 is less than 500 l, preferably less than 300 l, in particular less than 100 l. In an embodiment, the nominal volume of the container 1 is approximately 50 l.

[0030] The container 1 has a region that is designed higher in terms of its overall height (with at least one filling opening 2 ) and a region that is configured lower in terms of its overall height (in which the centrifugal pumps embodied as a group are arranged).

[0031] Furthermore, the container 1 has an emptying connection 3 . ...

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PUM

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Abstract

The invention relates to a device having a centrifugal pump and a comminuting assembly. The comminuting assembly is arranged upstream of an impeller (8). The comminuting assembly comprises a rotatingelement (13) and a stationary element (15). The comminuting assembly is used for the comminution of solid admixtures present in a conveying medium. The stationary element (15) has an outer part (20) and an inner part (21), the outer part (20) at least partially surrounding the inner part (21).

Description

technical field [0001] The invention relates to a plant with a centrifugal pump and a shredding system connected upstream of an impeller, wherein the shredding system has a surrounding element which cooperates with a fixed element for Shred solid inclusions in conveying media. Background technique [0002] It is known to design centrifugal pumps for conveying fluids contaminated with solids in such a way that they chop up the solids to such an extent that no clogging occurs both in the pump itself and in downstream lines. For this purpose, in known embodiments, the pump wheel is provided with a cutting element which cooperates with a counterpart fastened to the housing. In order to compensate for the resulting wear, the impeller is often mounted adjustably. [0003] This embodiment has the disadvantage that due to hard substances contained in the waste water, such as metal parts, stones, etc., the chopping elements may be damaged and the pump may thereby become stuck. As ...

Claims

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Application Information

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IPC IPC(8): F04D29/42F04D7/04F04D29/02
CPCF04D7/045F04D13/16F04D29/026F04D29/4273F04D29/4286
Inventor P.容A.顺克
Owner KSB AG