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Closed centrifugal pump channel impeller for liquids with abrasive or aggressive mixtures

An erosive, mixture technology, used in parts of pumping devices for elastic fluids, pumps for special fluids, non-variable-capacity pumps, etc., can solve problems such as impeller failure, delay wear, minimize wear, The effect of reducing sensitivity

Pending Publication Date: 2022-04-29
KSB AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, relatively small wear can already lead to complete failure of the impeller

Method used

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  • Closed centrifugal pump channel impeller for liquids with abrasive or aggressive mixtures
  • Closed centrifugal pump channel impeller for liquids with abrasive or aggressive mixtures
  • Closed centrifugal pump channel impeller for liquids with abrasive or aggressive mixtures

Examples

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Embodiment Construction

[0027] figure 1 A perspective view of a channel impeller of a centrifugal pump according to the invention is shown. The impeller is embodied as a closed channel impeller with a cover disk 1 and a carrier disk 2 . A plurality of vanes 3 extend between the carrier and cover pans. The blade 3 is delimited in the flow direction by its inlet edge (suction edge) 3 a and its outlet edge (extrusion edge) 3 b. It is delimited transversely to the direction of flow by the cover and carrier plates 1 , 2 . The channel wheel is produced from a castable or otherwise formable material, such as steel or cast mineral. The impeller can likewise be produced from a polymer with wear-resistant embedded particles, for example fine-grained silicon carbide (SiC). Impellers are mainly used for transporting liquids with abrasive or aggressive mixtures.

[0028] According to the invention, the wear resistance of the impeller and thus its achievable operating performance are optimized by means of a s...

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Abstract

The invention relates to a closed centrifugal pump channel impeller for liquids having an abrasive or aggressive mixture, consisting of a carrier disc and a cover disc and one or more blades arranged therebetween, characterized in that the impeller comprises at least one impeller, the at least one blade has a blade profile that is asymmetrical with respect to the skeleton line in an interface region with respect to the carrier disc and / or the cover disc.

Description

technical field [0001] The invention relates to a closed centrifugal pump channel impeller for liquids with abrasive or aggressive mixtures, consisting of a carrier plate and a cover plate and one or more vanes arranged between them. Background technique [0002] Depending on the transport parameters, centrifugal pumps are frequently used for transport media with components that promote wear. Wear occurs primarily on the components of the pump that come into contact with the flow. This includes, inter alia, the impeller, possibly the guide wheel, the pump housing with accessories and housing cover, and the shaft seal. [0003] The wear or material removal rate is strongly dependent on the local flow velocity. Pump impellers are particularly strongly involved in this, since particularly high velocities occur when flowing around the impeller blades. There are several methods for achieving an economical service life of the relevant components. One possibility is to coat the...

Claims

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Application Information

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IPC IPC(8): F04D29/24F04D29/22F04D29/02F04D7/04F04D7/06
CPCF04D29/242F04D29/2294F04D29/2227F04D7/04F04D7/06F05D2240/305F05D2240/303F05D2240/301
Inventor F·乔晨C·耶格W·麦辛格S·施密特R·维策尔
Owner KSB AG
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