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Treatment method for high-cavitation peripheral pump impeller

A treatment method, the technology of the vortex pump, which is applied to the components of the pumping device for elastic fluid, pumps, pump components, etc., can solve the problems of reducing the service life of the impeller, uneven flow velocity distribution, and potential safety hazards, and achieve the purpose of reducing impact , Improve cavitation performance, weaken the effect of mutual impact

Pending Publication Date: 2021-09-21
夏秋月
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  • Application Information

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Problems solved by technology

[0004] However, the inlet liquid flow of the closed vortex pump flows from the outer edge of the impeller to the root of the blade groove, the flow velocity is unevenly distributed, and the impact is relatively large, so the cavitation is poor, which greatly reduces the service life of the impeller, and cavitation can also cause corrosion. There is a great potential safety hazard for pumps that transport energy, chemical and other liquids, and the current closed vortex pumps have no measures to solve this problem

Method used

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  • Treatment method for high-cavitation peripheral pump impeller
  • Treatment method for high-cavitation peripheral pump impeller
  • Treatment method for high-cavitation peripheral pump impeller

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Embodiment

[0048] see Figure 1-8 , a high cavitation vortex pump impeller treatment method, see Figure 1-3 and Figure 5 , including the following processing steps:

[0049] S1, first clamp and fix the impeller with a clamp, let the impeller be placed horizontally, and then clean the blade and blade groove to remove corrosion points and stains;

[0050] S2, then weld the buffer feather scales in each blade groove, weld the buffer feather scales sequentially from the inside to the outside during welding, and let the outer buffer feather scales be welded near the edge of the inner buffer feather scales;

[0051] S3, after the welding is completed, clean the groove of the blade to remove the welding slag, and finally check the impeller to ensure that there is no defect before installing the impeller for use;

[0052] see Figure 2-4 , the buffer feather scale in the S2 step is a V-shaped structure, which can guide the liquid entering and leaving the blade groove, weaken the mutual imp...

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Abstract

The invention discloses a treatment method for a high-cavitation peripheral pump impeller, and belongs to the field of peripheral pumps. The cavitation performance of a closed peripheral pump is effectively improved by welding buffering feather scales on the basis of an existing impeller, the buffering feather scales prevent liquid from being in direct contact with blade grooves, impact on the blade grooves due to bubble breakage is prevented, the blade is protected well, the V-shaped structure of the buffering feather scale plays a role in guiding the liquid entering and exiting from the blade grooves in the longitudinal vortex motion, so that the impact of the liquid can be effectively weakened, the energy loss is reduced to a certain extent, and the working efficiency is effectively improved; the impact buffering piece on the buffering feather scale intercepts and divides bubbles by utilizing a bubble retaining ball, gas in the bubbles enters a defoaming spherical shell through a breathable film, the bubble rate in liquid is effectively reduced, and the elastic force of an elastic horn on the impact buffering piece can absorb part of impact energy generated when the bubbles are broken; and the cavitation performance of the peripheral pump is effectively improved.

Description

technical field [0001] The invention relates to the field of vortex pumps, in particular to a method for treating impellers of highly cavitating vortex pumps. Background technique [0002] Vortex pump is a kind of vane pump. In terms of principle and structure, it is different from centrifugal and axial flow pumps. It is called a vortex pump because it sucks and discharges liquid by making the liquid vortex motion when the impeller rotates. There are three types of vortex pumps: closed type, open type and centrifugal type. Closed vortex pump adopts closed impeller and open channel structure. The closed impeller refers to an impeller with a middle partition on the blade part and relatively short blades. The suction and discharge ports of the pump are separated by the tongue part. Communicate through the flow channel. This kind of flow channel directly connected with the suction and discharge ports is called an open flow channel. [0003] In a closed vortex pump, when the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/24F04D29/66F04D29/68
CPCF04D29/24F04D29/242F04D29/247F04D29/669F04D29/688
Inventor 夏秋月
Owner 夏秋月
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