elutriator

Abstract

The invention provides an elutriator, which comprises an outer cylinder body, particle inlets and particle outlets respectively arranged at the top and bottom of the outer cylinder body, particle inlet channel pipes and flow guides arranged at intervals in the outer cylinder body from top to bottom. The inner member and the cleaning box, the first gas inlet pipe, the second gas inlet pipe and the powder gas outlet; the flow guide inner member includes the first diameter-expanding section, the vertical section and the second diameter-expanding section fixedly arranged in sequence from top to bottom ; The cleaning box includes a cleaning plate, a cylindrical box wall and an air guide plate fixed sequentially from top to bottom; the second gas inlet pipe passes through the outer cylinder and the outlet is arranged directly below the air guide plate; the first The gas inlet pipe passes through the outer cylinder and connects to the cylindrical box wall; the powder gas outlet is set on the outer cylinder at the position corresponding to the middle part of the particle inlet channel pipe; the diameter of the lower end of the cleaning plate>the diameter of the upper end of the first expanded diameter section>the second The diameter of the lower end of the second enlarged diameter section>the diameter of the vertical section≥the diameter of the particle inlet channel pipe.

Description

technical field [0001] The invention relates to the field of powder engineering, in particular to an elutriator. Background technique [0002] In the production process involving granular materials, in view of the physical properties of the particles themselves, especially brittle and fragile particles, in the process of pneumatic conveying and transportation, after the particles collide and rub against the wall of the device or pipe, it is easy to produce wire drawing and powder , if the powder is not removed, the particles will easily produce bubbles, spots, etc. during the later injection molding process, which will affect the product quality. In order to remove the powder in the finished granules in the industrial production process, an elutriator is often used to remove the powder before the granules enter the packaging silo. [0003] The particle size range of the powder produced by friction or collision during the transportation of particles is large. At the same tim...

AI Technical Summary

Problems solved by technology

[0003] The particle size range of the powder produced by friction or collision during the transportation of the particles is large, and the powder will adhere to the surface of the particles due to the static electricity generated by the friction of the particles, which is not easy to remove

In the elutriators mentioned in Chinese patents CN1050186032B, CN202224355U, CN206485999U, and CN201030332Y, in the process of equipment structure design, only one-step convective separation is performed between particles and powder, the residence time is short, and there is no static elimination design, and There is no mention about the removal efficiency of sticky powders and powders with different particle sizes

For the aforementioned problems, there is no good solution

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