Low-noise self-priming combined pump

Abstract

The invention discloses a low-noise self-priming combined pump. According to the low-noise self-priming combined pump, diffusion guide vanes and a guide disc of a traditional self-priming jet pump are removed, a single-baffle-tongue single-outlet centrifugal vortex chamber or a multi-baffle-tongue multi-outlet centrifugal vortex chamber which is higher in hydraulic performance and efficiency is adopted, a single entry type runner is designed, centrifuged and accelerated fluid is reasonably guided into a distribution pumping chamber or a distribution tee joint, scraping among the guide vanes, the guide disc and a centrifugal impeller and strong impact of the high-speed fluid to the guide vanes and the guide disc are eliminated essentially, transitional flowing between the centrifugal vortex chamber and the distribution pumping chamber or the distribution tee joint is more smooth, and the flowing losses and flowing noise are lower. Through the reasonable arrangement of the single entry type runner, continuous supply of the working fluid at the inlet section of a spray nozzle can be guaranteed, so that negative pressure is maintained, and strong self-priming capacity is obtained. The traditional large-sized distribution pumping chamber can be replaced with the distribution tee joint, and thus the structure is more compact.

Description

technical field [0001] The invention relates to a centrifugal injection composite pump, in particular to a noise-reducing single-entry self-priming composite pump, which belongs to the field of fluid machinery. Background technique [0002] The pump is a general-purpose fluid machine with a large output and a wide range of uses, and has a huge demand for energy. It transfers the mechanical energy or other energy of the prime mover to the liquid, and increases the mechanical energy of the liquid, so as to achieve the purpose of conveying and pressurizing the liquid. Self-priming jet pump is also called jet pump (self-priming jet-pump). The jet pump has simple structure and reliable performance. Compared with the vortex pump, the jet pump has strong suction, stable self-priming, and high efficiency. It is a pump product with a large volume and a wide range. [0003] As early as the 1860s, German scholar Zeuner used the momentum theorem to establish the design theory of jet p...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the disadvantages of the existing jet pumps such as high operating noise and unsmooth flow of fluid entering the split pressure water chamber, the purpose of the present invention is to provide a centrifugal pump with remarkable noise reduction effect, comprehensive working performance such as flow rate, lift and suction lift, and high feasibility. jet compound pump

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