Silicon micropowder screening machine based on nylon screens

Abstract

The invention discloses a silicon micropowder screening machine based on nylon screens. The silicon micropowder screening machine comprises a feeding hopper, a spiral conveying mechanism and a screening mechanism, wherein the feeding hopper is arranged on the upper side of the bottom of the spiral conveying mechanism; a spiral screen made of a nylon material is arranged in the spiral conveying mechanism; a discharging tube is arranged at the bottom end of the spiral conveying mechanism; a feeding tube is arranged at the upper end of the spiral conveying mechanism; the screening mechanism comprises an upper shell and a lower shell; a threaded connection tube and a spring support pillar are arranged between the upper shell and the lower shell; a vibration exciter is fixed on the outer side of the upper shell; and a screen made of the nylon material is fixed on the inner side of the upper shell. According to the silicon micropowder screening machine based on nylon screens, the spiral screen and the screen are made of the nylon material; the silicon micropowder screening machine is practical and convenient; the per unit output is increased in use; the screening efficiency is improved; through the adoption of the nylon screens, the problem that the screens are frequently replaced in the silicon micropowder industry is solved.

Description

technical field [0001] The invention relates to the technical field of silicon powder production equipment, in particular to a nylon screen-based silicon powder screening machine. Background technique [0002] Microsilica powder is an inorganic material with a wide range of uses. It has the characteristics of small thermal conductivity, excellent dielectric properties, small thermal expansion coefficient, and corrosion resistance. Due to its excellent physical properties and stable chemical properties, silicon micropowder has become one of the important raw materials in many high-tech fields. For example, 70-90% of the epoxy molding compound used for integrated circuit packaging is silicon micropowder, and the content and particle size of silicon micropowder have a great influence on the fluidity of epoxy molding compound, which in turn has a great impact on the effect of integrated circuit packaging. [0003] There are deficiencies in the use of traditional silica powder s...

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Problems solved by technology

[0003] There are deficiencies in the use of traditional silica powder screening machines. The screening uses stainless steel screens. This type of screen has a large screen area and low screening efficiency. The pass rate of qualified products is low and the waste phenomenon is serious.

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