Processing for key parts of specific circulation pump

A processing method and technology of circulating pump, which are applied to pump elements, components of pumping devices for elastic fluid, pumps, etc., can solve the problem of increasing the difficulty of impeller processing, the inability to process the volute chamber, and the difficulty of forming auxiliary blades, etc. problems, to achieve the effect of improving the coupling accuracy, reasonable cost and simple operation

Inactive Publication Date: 2007-03-07
SICHUAN DONGFENG ELECTRIC MACHINARY WORKS CO LTD
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

[0002] The outlet profile of the volute of the special circulating pump should transition from a T-shaped section to a circular section. The molding of the chamber cannot be obtained by mechanical equipment
The processing quality of the impeller directly affects the stability and safety of the operation performance of the special circulating pump. Therefore, the processing quality and balance of the impeller are required to be high, and the auxiliary blade on the impeller can use the impeller itself to rotate and use the centrifugal action of the auxiliary blade to carry out high-pressure pumping. Water sealing is very important for the balance of the impeller, but it is difficult to sha

Method used

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Example Embodiment

[0014] The main technical parameters of a special circulating pump are: rated head: 55.00 meters, rated flow: 15500 cubic meters per hour, rated speed: 495rpm, efficiency: 90.5%. If the traditional method is used, the process is complicated and the license equipment cycle is long. Utilize the present invention to process the key components of this special circulation pump, the method is:

[0015] The volute adopts casting and welding structure, which can be formed at one time, and the flow channel profile of the pump casing can fully meet the design requirements, and the cost is reasonable.

[0016] When processing the impeller, the molding of the auxiliary blades is finely blanked to strictly control the size of the auxiliary blades; when the plane of the auxiliary blades is machined and welded, the inner and outer tangent circles of the welding blades and auxiliary blades are accurately engraved; Before welding, it is necessary to strictly check whether the profile and weig...

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PUM

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Abstract

This invention discloses one special recycle pump key parts process method, which comprises steps of whirl chamber shaping, turbine welding accuracy control and middle axis and main axis connection accuracy adjusting. The whirl shaping step is to etch out weld blade, aid blade inner and outer circle line and to adopt turbine down ring bias circle for process. In order to ensure connection accuracy inner tamper hole and connection flange are processed for one time and to adopt matching method by main axis and connection tamper degree.

Description

technical field [0001] The invention relates to a processing method for key components of a special circulating pump. Background technique [0002] The outlet profile of the volute of the special circulating pump should transition from a T-shaped section to a circular section. The forming of the chamber cannot be obtained by mechanical equipment. The processing quality of the impeller directly affects the stability and safety of the operation performance of the special circulating pump. Therefore, the processing quality and balance of the impeller are required to be high, and the auxiliary blade on the impeller can use the impeller itself to rotate and use the centrifugal action of the auxiliary blade to carry out high-pressure pumping. The water seal is very important for the balance of the impeller, but it is difficult to form the auxiliary blades, and it requires uniform distribution and accurate position during assembly and welding, and it must be processed together wit...

Claims

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Application Information

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IPC IPC(8): F04D13/06F04D29/42F04D29/30F04D29/66F04D29/044
Inventor 王家玉江化唐习斌
Owner SICHUAN DONGFENG ELECTRIC MACHINARY WORKS CO LTD
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