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Double-blade semi-open type sewage pump impeller hydraulic design method

A hydraulic design, semi-open technology, used in the field of fluid machinery

Inactive Publication Date: 2018-01-23
JIANGSU GUOQUAN PUMP MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the above-mentioned problems of the existing technical solutions, the present invention provides a brand-new hydraulic design method for the impeller of the double-blade semi-open sewage pump. For the working environment of the sewage pump, a lot of design formulas have been optimized according to the particularity of its work and the problems that are likely to occur in practice

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  • Double-blade semi-open type sewage pump impeller hydraulic design method
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  • Double-blade semi-open type sewage pump impeller hydraulic design method

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Embodiment Construction

[0043] figure 1 and figure 2 They are the axial plane projection and plan view of an embodiment of the double-blade semi-open sewage pump impeller of the present invention, respectively.

[0044] A method for hydraulic design of a double-blade semi-open sewage pump impeller, characterized in that: the impeller is in the form of a double-blade semi-open impeller, and the surface of the impeller is sprayed with nano-WC-8Co superhard composite coating by supersonic flame spraying technology, And it provides the design method of the main geometric parameters of the impeller, including the outer diameter of the impeller D 2 , the impeller outlet width b 2 , blade outlet placement angle β 2 , blade wrap angle

[0045] (5) Outer diameter of the impeller D 2 :

[0046] Since the sewage contains fibrous substances, silt and sand particles and substances that are easy to deposit and agglomerate, it will consume a relatively large power during the operation of the pump. In addit...

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Abstract

The invention provides a double-blade semi-open type sewage pump impeller hydraulic design method. The double-blade semi-open type sewage pump impeller hydraulic design method is characterized in thatan impeller is of a double-blade semi-open type, and the surface of the impeller adopts high velocity oxy-fuel technology and is coated with a nanometer WC-8Co super-hard composite coating. A designmethod for main geometrical parameters of the impeller is provided, which comprises an impeller outer diameter D2, an impeller exit width b2, a blade exit placing angle beta 2, and a blade wrap angle.The double-blade semi-open type sewage pump impeller hydraulic design method not only improves the existing design scheme, but also more fully considers life and chemical sewage pump working environment and specifically optimizes a design formula for the problems in special work and practice. The double-blade semi-open type sewage pump impeller hydraulic design method can ensure abrasion resistance, and high-efficiency and stable work of a semi-open type impeller, and enhances adaptive capacity on bad working environment.

Description

technical field [0001] The invention relates to the field of fluid machinery, in particular to a hydraulic design method for the impeller of a double-blade semi-open sewage pump. Background technique [0002] Sewage pump is a kind of impurity pump, which is mainly used to transport urban sewage or fluid medium containing solid particles such as fibers and paper scraps. Because the conveyed medium contains fibers that are easy to entangle and deposit or bunch. Therefore, the flow channel of this kind of pump is easy to be blocked. Once the pump is blocked, the pump will not work normally, the motor will be overloaded and heated, and even the motor will be burned, resulting in poor sewage discharge. Bring serious impact to urban life and environmental protection. Therefore, anti-clogging and reliability are important factors for the quality of sewage pumps. [0003] The sewage pump is the same as other pumps. The impeller and the pressure water chamber are the two core comp...

Claims

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Application Information

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IPC IPC(8): F04D29/22F04D29/02
Inventor 朱荣生钟伟源杨爱玲
Owner JIANGSU GUOQUAN PUMP MFG CO LTD
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