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Efficient non-overloading submersible sewage pump impeller suitable for sewage treatment

A sewage treatment, no-overload technology, applied in the parts, pumps, pump components, etc. of the pumping device for elastic fluids, can solve the problem that the submersible sewage pump cannot be fully applied, achieve small axial force, reduce hydraulic force Loss, the effect of increasing the slope of the curve

Inactive Publication Date: 2016-12-07
合肥凯泉电机电泵有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The full head design method of ordinary centrifugal pumps cannot be fully applied to the impeller design of submersible sewage pumps. Therefore, the characteristics of submersible sewage pumps must be considered. There are centrifugal pump design methods for correction

Method used

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  • Efficient non-overloading submersible sewage pump impeller suitable for sewage treatment

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Embodiment Construction

[0022] Referring to the accompanying drawings, a high-efficiency non-overload submersible sewage pump impeller suitable for sewage treatment includes 2 to 4 blades 9, the inlet edge of the blade is protruding, and is in the shape of a curve, and the blade outlet is placed at an angle β 2 11 At 12°~25°, the blade inlet side 3 extends to the front cover plate 4, and the shape of the inlet is a curve. The impeller is a closed structure blade type centrifugal impeller, and the area ratio of the impeller outlet area to the throat area is 1.5~ 2.0.

[0023] Impeller outer diameter D 2 , outlet width b 2 The value is greater than that of ordinary centrifugal pumps, and the value of the blade wrap angle φ12 is increased. The shape of the impeller in this embodiment adopts a closed impeller structure with a front cover and a rear cover, and the inlet of the impeller blades protrudes forward from the front cover and is modified into a curve. The specific implementation process of t...

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Abstract

The invention discloses an efficient non-overloading submersible sewage pump impeller suitable for sewage treatment. The efficient non-overloading submersible sewage pump impeller comprises two to four blades. The inlet edges of the blades extend forwards and are in a curve shape. The blade outlet setting angle beta2 ranges from 12 degrees to 25 degrees. The inlet edges of the blades extend towards a front cover plate, and inlets are in a curve shape. The impeller is a blade-type centrifugal impeller of a closed structure. The area ratio of the impeller outlet area to the throat area ranges from 1.5 to 2.0. By the adoption of the impeller designed through a method, a relatively flat shaft power curve can be obtained, so that no overload exists within the range from the minimum flow point and the maximum flow point in engineering application of a pump, and meanwhile the high through capacity and high efficiency of the submersible sewage pump are guaranteed.

Description

technical field [0001] The invention relates to the field of hydraulic models of centrifugal pumps, in particular to a high-efficiency non-overload submersible sewage pump impeller suitable for sewage treatment. Background technique [0002] The submersible sewage pump is a centrifugal pump with special performance. It is a special machine that combines the pump and the motor to transport liquid. The electromechanical one submerges into the water to work. At present, submersible sewage pumps generally adopt channel-type impellers. Due to the particularity of the pump’s operating conditions, the operating conditions of the pump vary widely, and the floating liquid level of the pump is constantly changing, which causes a large change in the lift of the device, resulting in the actual pump. The operating point moves to a larger flow range, and the operation of the submersible sewage pump in the large flow area is prone to overload. The phenomenon of burning out the motor due t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/24F04D29/22
CPCF04D29/2216F04D29/245
Inventor 白茂宁王俊华
Owner 合肥凯泉电机电泵有限公司
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