Processing for key parts of specific circulation pump

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...

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 shape the auxiliary blades, and it requires uniform distribution and accurate position during assembly and welding, and it must be processed together with the impeller, so the processing difficulty of the impeller is increased

The coupling accuracy of the intermediate shaft and the main shaft has a great influence on the stability of the pump operation, but due to the limitation of the pump structure, the coupling between the intermediate shaft and the main shaft must be adjusted with an adjustment pad, and the adjustment pad is a block structure. It increases the technical difficulty of the three-piece coupling of the intermediate shaft, the main shaft and the block-structured adjustment pad.