CN201720121U - Overflow grading device for silicon carbide fine powder - Google Patents

Abstract

The utility model relates to a hydraulic power grading device, in particular to an overflow grading device for silicon carbide fine powder. The overflow grading device comprises a cylinder body (1), a coffer (5) and a discharge pipe (6), and is characterized by the further inclusion of a tapered hopper (2), a tapered hopper support frame (3) and a refuse pipe (4), wherein the tapered hopper (2) is arranged in the center at the top of the cylinder body (1) and is fixed on the cylinder body (1) through the tapered hopper support frame (3); the bottom of the tapered hopper (2) is connected with the refuse pipe (4); the refuse pipe (4) extends out of the cylinder body (1); the coffer (5) is arranged on the periphery at the top of the cylinder body (1); and the discharge pipe (6) is arranged at the bottom opening of the coffer (5). The overflow grading device improves the purity of silicon carbide, as well as the production quality.

Description

The overflow size separation device of silicon carbide micro-powder

(1) technical field

The utility model relates to a kind of hydraulic grading device, especially relates to a kind of overflow size separation device of silicon carbide micro-powder.

(2) background technology

Silicon carbide micro-powder is the important materials of making products such as solar silicon wafers, semi-conductor silicon chip, engineering ceramics, heating element heater, high grade refractory, and is along with greatly developing of new material science, more and more higher to the quality requirement of silicon carbide micro-powder.In the production of high-quality silicon carbide micro-powder, to the classification of thick and tiny silicon carbide micro-powder particle be most important also be difficult technologies link.At present; extensively the method that adopts is the overflow size separation method; but usually contain the carbon that is suspending in the liquid that overflows; people often have the fluid drips that partly contains impurity carbon when picking up and being transported to these impurity carbon usefulness outside the grading plant and fall in the cofferdam of cylindrical shell periphery; thereby influenced in the cofferdam purity of carborundum in the liquid, reduced the production quality.

(3) summary of the invention

In order to overcome above-mentioned deficiency, the utility model provides a kind of overflow size separation device of silicon carbide micro-powder, and the overflow size separation device of this silicon carbide micro-powder has improved the purity of carborundum and the quality of production.

The purpose of this utility model is achieved in that

A kind of overflow size separation device of silicon carbide micro-powder, comprise cylindrical shell, awl bucket, awl bucket bracing frame, waste material pipe, cofferdam and discharge nozzle, the center at described cylindrical shell top is provided with the awl bucket, described awl bucket is fixed on the cylindrical shell by awl bucket bracing frame, described awl bucket bottom links to each other with the waste material pipe, described waste material pipe leads to outside the cylindrical shell, and described cylindrical shell top periphery is provided with the cofferdam, and described cofferdam bottom opening is provided with discharge nozzle.

The beneficial effect that the utlity model has is:

The overflow size separation device of this silicon carbide micro-powder has added the awl bucket and has removed impurity carbon in the overflow size separation device, improved the purity of carborundum, has improved the production quality.

(4) description of drawings

Fig. 1 is the structural representation of the overflow size separation device of the utility model silicon carbide micro-powder.

Wherein: cylindrical shell 1, awl bucket 2, awl bucket bracing frame 3, waste material pipe 4, cofferdam 5, discharge nozzle 6.

(5) specific embodiment

As Fig. 1, the utility model relates to a kind of overflow size separation device of silicon carbide micro-powder, comprise cylindrical shell 1, awl bucket 2, awl bucket bracing frame 3, waste material pipe 4, cofferdam 5 and discharge nozzle 6, the center at described cylindrical shell 1 top is provided with awl bucket 2, described awl bucket 2 is fixed on the cylindrical shell 1 by awl bucket bracing frame 3, and described awl 2 bottoms of struggling against link to each other with waste material pipe 4, and described waste material pipe 4 leads to outside the cylindrical shell 1, described cylindrical shell 1 top periphery is provided with cofferdam 5, and described cofferdam 5 bottom openings are provided with discharge nozzle 6.

When the liquid of silicon carbide micro-powder after pickling is cleaned was passed in the cylindrical shell 1, a little impurity carbon can be suspended in liquid top, subsequently these impurity was picked up, and poured in the awl bucket 2, had avoided swinging to cylindrical shell 1 and had dripped in the cofferdam 5 when outer, thereby influenced the purity of carborundum.

Claims (1)

1. the overflow size separation device of a silicon carbide micro-powder, comprise cylindrical shell (1), cofferdam (5) and discharge nozzle (6), it is characterized in that: it also comprises awl bucket (2), awl bucket bracing frame (3) and waste material pipe (4), the center at described cylindrical shell (1) top is provided with awl bucket (2), described awl bucket (2) is fixed on the cylindrical shell (1) by awl bucket bracing frame (3), described awl bucket (2) bottom links to each other with waste material pipe (4), described waste material pipe (4) leads to outside the cylindrical shell (1), described cylindrical shell (1) top periphery is provided with cofferdam (5), and described cofferdam (5) bottom opening is provided with discharge nozzle (6).

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