Production technology for impellers with different lifts by utilizing existed impeller mold

Abstract

The invention relates to a production technology for impellers with different lifts by utilizing existed impeller mold. The main process flow comprises: preparing a movable block with certain thickness, and enabling the inner side of the movable block to be capable of fitting the working face of a blade of an impeller; fixedly connecting the edge position of each blade of the impeller mold with one movable block, so as to obtain a new impeller mold; putting molding sand into the new impeller mold for core preparation, and after core preparation is finished, taking out a new impeller sand core; putting the sand core into a molded core cavity and performing casting molding, so as to obtain an impeller blank; and performing turning processing on the impeller blank, and finally performing milling processing on the outlet end at the back side of each blade, so as to obtain different blade outlet angles according to self demands. The beneficial effects comprise that the technical scheme is short in impeller preparation period, and correspondingly low in production cost. The impeller outlet edges can be conveniently thickened, and further the lift of a pump is facilitated to be adjusted by employing a milling method to increase the blade outlet angle.

Description

technical field [0001] The invention relates to the technical field of water pumps, in particular to a production process for producing impellers with different lifts by using existing impeller molds. Background technique [0002] Pump products are not like motor products, the motor power has been standardized, so the number of power stages of the motor is fixed. The performance parameters of pump products are ever-changing, and so are the performance requirements of customers. Even a series of products sometimes cannot meet the requirements. In the selection, it often appears that the head of a prototype pump is 2 to 5m lower than the head required by the customer. If a pump with a larger specification is selected, the outer diameter of the impeller will be cut a lot, which will reduce the efficiency of the pump more. The cost has also increased, and customers are unwilling to accept it. The current production process of the pump is as follows: the preliminary design of t...

AI Technical Summary

Problems solved by technology

The performance parameters of pump products are ever-changing, and so are the performance requirements of customers. Even a series of products sometimes cannot meet the requirements.

In the selection, it often appears that the head of a prototype pump is 2 to 5m lower than the head required by the customer. If a pump with a larger specification is selected, the outer diameter of the impeller will be cut a lot, which will reduce the efficiency of the pump more. The cost is also increased, and customers are unwilling to accept

The current production process of the pump is as follows: the preliminary design of the pump is carried out first, and the water pump sample is manufactured according to the design. If the parameters of the calibrated water pump sample do not meet the requirements, it is necessary to re-design and manufacture. This process is costly and the production cycle is long.

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