Plastic-lining centrifugal pump special-shaped flow passage processing device

Abstract

The present invention is one irregular flow passage machining apparatus for plastic lining centrifugal pump, and features that after one milling template with required flow passage locus is set beside the plastic lining centrifugal pump, the rotary cutting tool with sliding unit on the tool shank cut the plastic lining through moving on the side wall of the milling template, so as to obtain the plastic lining flow passage in the same shape as that of the milling template. The present invention can obtain ideal flow passage in a common milling machine, and has the advantages of high machining efficiency and high machining flexibility.

Description

technical field [0001] The present invention belongs to a high-efficiency processing device for a special-shaped flow channel of a plastic-lined centrifugal pump. It is a divisional application for the application number 01134181.5, the filing date is 2001.11.15, and the name is "a plastic-lined centrifugal pump spiral flow channel forming method and processing device". . Background technique [0002] In order to solve the transportation of corrosive and granular media, an economical and effective way is to use steel-lined plastic centrifugal pumps, that is, to compound a layer of corrosion-resistant and wear-resistant plastic layer with a certain thickness on the lining of the metal pump body of the centrifugal pump. , such as ultra-high molecular weight polyethylene. However, due to the low fluidity of plastics with corrosion-resistant and wear-resistant properties, the only method that can basically be used is the molded lining. Moreover, in order to facilitate demouldi...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is realized. The basic idea is to first use the metal volute of the centrifugal pump as the outer mold, and use the conventional pressure lining method to compound the lining-a plastic lining with an approximately circular inner surface on the volute flow part, and then to line the plastic lining on the side of the pump. The milling template with the required flow channel track is fixedly dug, and the rotary milling cutter is moved and cut according to the required flow channel track, and the required flow channel is processed on the circular plastic lining layer on the inner peripheral surface according to the given flow channel track ( Such as involute volute flow channel), which not only overcomes the shortcomings of low pump efficiency and poor hydraulic characteristics caused by ordinary molded linings that can only obtain circular flow channels; at the same time, it overcomes the direct lining to obtain volute flow channels The work efficiency is low and there are quality problems, especially not suitable for linings with relatively high molecular weight plastics.

Images