Guide vane device for pump

Abstract

The invention discloses a guide vane device for a pump capable of milling solid particles in solution to be nanoscale. A filter mesh composed of a plurality of uniformly-distributed thin holes and disposed at the guide vane outlet of a present multistage chemical centrifugal pump is utilized, and the density of the thin hole achieves 1000 to 2500 meshes. The particles are directly milled stage by stage during a convey process, so that the conveyed solid particles achieve nanoscale, and the particle size can achieve 0.3 mum at least; and a manufacturer can reduce process flows and have no need to purchase devices such as a jet mill, thereby decreasing production cost. The particles after a multistage milling are uniform in particle size and good in shape by utilizing the nano-pump; and the milling is performed in solution without a phenomenon of oxidization. The pump can be widely applied to mill various kinds of solution containing a mica powder, a graphite powder, a metal powder etc.

Description

technical field [0001] The invention relates to a multi-stage chemical centrifugal pump for conveying various solutions containing mica powder, graphite powder and metal powder, especially a multi-stage chemical centrifugal pump capable of grinding solid particles in the solution into nanoscale Use guide vanes. Background technique [0002] With the continuous development of science and technology, the particle size requirements of various powders such as graphite powder and mica powder are getting higher and higher, and some even reach the nanometer level. For example, graphite powder is a widely used material, which can be used as raw materials for casting materials, refractory materials, dyes, electrode pastes, etc. According to the different requirements for graphite materials, the particle diameter of graphite powder also varies greatly. Nano-graphite powder is a new type of material with high electrical conductivity, thermal conductivity, high lubrication, stealth, s...

AI Technical Summary

Problems solved by technology

However, the powder processed by the existing domestic jet mill still has the following defects: one is that the particle size is still relatively large, and there are still many coarse particles of 25 microns; the other is that the particle size distribution and particle size uniformity are not good enough; the third is that The particle size and morphology are poor, and most of them are sharp-edged; the fourth is that the finished product is oxidized, and the finer the powder, the more serious the oxidation phenomenon, which becomes an irreconcilable contradiction

However, the energy consumption and cost of these methods are high, the process is complicated, and there may be instability in the preparation process, and the results are difficult to control.

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