High-efficiency dual-stage centrifugal regenerative pump

A technology for regenerative pumps and centrifugal pumps, which is applied to pumps, pump devices, pump components, etc., can solve the problems of low flow rate and efficiency of regenerative pumps, and achieve the effects of strong manufacturing feasibility, good industrialization prospects and market potential

Pending Publication Date: 2019-04-23
浙江中杭水泵股份有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

[0005] Therefore, aiming at the shortcomings of current regenerative pumps with relatively small flow rate and efficiency, the present invention integrate

Method used

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  • High-efficiency dual-stage centrifugal regenerative pump
  • High-efficiency dual-stage centrifugal regenerative pump
  • High-efficiency dual-stage centrifugal regenerative pump

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Embodiment Construction

[0022] In order to enable those skilled in the art to better understand the technical solution in the present invention, the technical solution in the invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention, and what is obviously described is only a part of the present invention Examples, not all examples. Based on the embodiments of the invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the invention.

[0023] Such as figure 1 and image 3 As shown, the two-stage centrifugal regenerative pump of this embodiment is composed of a first-stage centrifugal pump and a secondary regenerative pump compactly connected in series. The first-stage centrifugal pump includes a first-stage centrifugal pump inlet 1, a front cover plate 2 of the first-stage centrifugal pump, Centrifugal impeller 3 and centrifugal guide vane...

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Abstract

The invention discloses a high-efficiency dual-stage centrifugal regenerative pump. The high-efficiency dual-stage centrifugal regenerative pump comprises a first-stage centrifugal pump consisting ofa centrifugal impeller and a centrifugal guide blade, a second-stage regenerative pump consisting of a regenerative pump impeller and a regenerative pump body, and a transferring diversion cavity forconnecting the first-stage centrifugal pump with the second-stage regenerative pump; and the centrifugal impeller and the regenerative pump impeller are coaxially fixed on a pump shaft, and a motor isused for simultaneously driving the two impellers to rotate. According to the high-efficiency dual-stage centrifugal regenerative pump disclosed by the invention, through pressurizing of the first-stage centrifugal pump, the gas containing rate of inlet fluid of the regenerative pump can be effectively reduced, the inlet condition of the second-stage regenerative pump is improved, and the operation noise of the pump is reduced. Besides, through the organic combination of the first-stage centrifugal pump and the second-stage regenerative pump, the purpose that the two pumps have complementaryadvantages is achieved, the compact integral structure of the pump is reserved, and the volume of the high-efficiency dual-stage centrifugal regenerative pump compared with that of a conventional regenerative pump is not greatly changed.

Description

technical field [0001] The invention relates to the technical field of water pumps, in particular to a two-stage centrifugal regenerative pump. Background technique [0002] Regenerative pump, also known as vortex pump, friction pump or self-priming pump, is a kind of fluid machinery with large quantity and wide range, low energy efficiency and low power. It first appeared in the 1920s and was developed by Simon and Heng Created and promoted by the construction company. Regenerative pumps are special vane pumps with radial vanes or impellers with small inclinations. Generally speaking, regenerative pumps do not exceed 40% efficiency. Although the efficiency is not high, the regenerative pump has a simple structure, strong self-priming ability, and high head, and is widely used in various fields of the national economy, such as domestic water boosting, air conditioning pumps, and solar water heaters. [0003] When the regenerative pump works, the liquid enters the fluid ar...

Claims

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Application Information

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IPC IPC(8): F04D13/06F04D13/12F04D29/18F04D29/66
CPCF04D13/06F04D13/12F04D29/185F04D29/188F04D29/669
Inventor 戚锦伟叶金巍凃程旭包福兵
Owner 浙江中杭水泵股份有限公司
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