A method of manufacturing a volute with a composite lining

Abstract

The invention discloses a manufacturing method for a volute with a composite lining. The manufacturing method includes the steps reserving a gap in a cavity of a volute base body and arranging latticed reinforcing ribs; manufacturing the volute base body and forming an injection hole; designing a forming mold for forming the composite lining and a sealing mold and installing the forming mold and the sealing mold on the volute base body; adding short carbon fibers and macromolecular resin adhesive curing agents with macromolecular resin adhesives as a base body and then obtaining liquid composite material; injecting the liquid composite material into a forming cavity through the injection hole and carrying out pressure maintaining and solidifying; and disassembling the forming mold, blocking the injection hole and obtaining the volute with the composite lining. The manufacturing method is simple, the operation is convenient, the roughness of the cavity of the volute base body can be effectively lowered, the shape and the dimension of the cavity of the composite lining of the volute can be accurately controlled, and the operation of an impeller is reliable and efficient.

Description

technical field [0001] The invention relates to the field of volute manufacturing, in particular to a method for manufacturing a volute with a composite lining. Background technique [0002] Pumps, fans and compressors are typical fluid machines that increase the pressure of gas or liquid and transport gas or liquid. The pump casing of the pump, the casing of the fan and the compressor (collectively referred to as the volute) and the impeller are the key parts of the pump, fan and compressor. The volute is the base, and the impeller is installed in the volute. The cavity formed between the impeller and the volute sucks gas or liquid at the gas or liquid inlet. With the rotation of the impeller, the position and volume of the cavity change, and the pressure of the gas or liquid is raised and transferred to the gas or liquid outlet to realize gas or liquid delivery. [0003] The precise dimensioning of the cavity between the impeller and volute has a significant impact on th...

AI Technical Summary

Problems solved by technology

At present, the volute is mainly manufactured by casting, machining and other methods, which has the disadvantages of low precision and rough surface, resulting in a large and uneven gap between the impeller and the volute, and it is difficult to accurately control the size of the cavity between the impeller and the volute; When pumps, fans and compressors are running, gas or liquid backflow is easy to occur, which reduces the efficiency of pumps, fans and compressors, and also affects pressure and flow

At the same time, the inner surface of the volute is rough. When the gas or liquid flows at high speed, the resistance caused by friction increases significantly, which consumes the power of the driving motor and further reduces the efficiency of pumps, fans and compressors.

At the same time, the heat generated by friction will increase the temperature of pumps, fans and compressors, affecting the reliability of pumps, fans and compressors

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