Variable pitch drum screen separator

Abstract

The invention relates to a pitch changing drum screen separator which comprises a spiral conveyor, a screen frame, a drum screen mesh and an air separation chamber. The spiral conveyor is arranged at one end of the screen frame, and a center shaft of the spiral conveyor penetrates from one end of the screen frame to the other end of the screen frame and is fixedly installed in a supported mode. The drum screen mesh is arranged on the center shaft of the spiral conveyor, a material inlet of the drum screen mesh is connected with a material outlet of the spiral conveyor, and internal spiral blades are arranged on the inner wall of the drum screen mesh. Mesh holes are formed on the drum screen mesh and are used for pellet materials to fall to form pellet material flow curtains in the conveying process. The air separation chamber is arranged under the drum screen mesh and is used for separating the pellet material flow curtains in an air separation mode. The pitch changing drum screen separator is characterized in that the screw pitch of the internal spiral blades arranged on the drum screen mesh tapers gradually in the advancing direction of the pellet materials. By adopting the pitch changing drum screen separator, the pellet materials can form the pellet material flow curtains with uniform thickness, the air separation effect is led to be excellent, large grains, small grains and fine dust in the pellet materials can be quickly and thoroughly separated, and accordingly clean and uniform pellet materials can be obtained.

Description

technical field [0001] The invention relates to a shot material separation device, in particular to a variable-pitch trommel separator capable of separating large particles, small particles and fine dust from the shot material to obtain clean and uniform shot material. Background technique [0002] In mining equipment, metallurgical equipment, cement machinery, shot blasting equipment, sandblasting equipment and many other occasions, it is necessary to separate the large particles, small particles and fine dust in the shot to obtain clean and uniform shot. The trommel screen separator is a commonly used separation equipment at present. It conveys the pellets through the internal helical blades arranged inside the cylinder screen. During the conveying process, the pellets fall from the holes on the cylinder screen to form a flow curtain of pellets, and then The large particles, small particles and fine dust in the pellets are separated by winnowing. However, the existing tro...

AI Technical Summary

Problems solved by technology

However, the existing trommel separator has the problem of uneven shot flow curtain in the actual working process, and the separation effect is not very ideal

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