Raymond mill

Abstract

The invention discloses a Raymond mill, comprising a machine base, a cylinder body is connected on the top surface of the machine base, a grinding ring is arranged in the machine base, a main shaft extending into the cylinder body is rotatably connected to the machine base, and the main shaft is connected with There is a plum-blossom stand, and several sets of grinding roller assemblies are hinged on the plum-blossom stand. The grinding roller assembly includes a grinding roller shaft hinged on the plum blossom frame and a grinding roller mounted on the grinding roller shaft. The top of the cylinder is equipped with Classifier, the classifying rotor of the classifier is located at the top of the inner cavity of the cylinder. In the longitudinal sectional view of the grinding ring, the wall contour line of the inner wall surface is a convex arc, and in the longitudinal sectional view of the grinding roller, the side contour of the outer side is The line is a convex arc. The product produced by this machine has a fine particle size, which is suitable for the production of ultra-fine powder.

Description

technical field [0001] The invention relates to a Raymond mill. Background technique [0002] Raymond mill is one of the most widely used equipment for non-metallic mineral processing. The basic structure of the existing Raymond mill is as follows: It includes a machine base, a cylinder is connected to the top surface of the machine base, and a mill is installed in the machine base. The machine base is rotatably connected with a main shaft that extends into the barrel, and the main shaft is connected with a plum blossom frame, and multiple sets of grinding roller assemblies are hinged on the plum blossom frame, and the grinding roller assembly includes grinding rollers hinged on the plum blossom frame The shaft and the grinding roller mounted on the grinding roller shaft, a classifier is installed on the top of the cylinder, and the classifying rotor of the classifier is located on the top of the cylinder cavity. [0003] The existing Raymond mill with the above structure m...

AI Technical Summary

Problems solved by technology

[0003] The existing Raymond mill with the above structure mainly has the following defects: First, the shape of the crushing pair (composed of grinding rollers and grinding rings) of the Raymond mill is mostly cylindrical or conical, which is mainly produced by the revolution of the grinding rollers. Centrifugal force squeezes and crushes the material, and the powder produced by it has a large particle size, which is not suitable for the production of ultra-fine powder. The material is carried by the airflow from the crushing area to the classification area. The distance is too long, resulting in some qualified fine powder failing to reach the classification area and then falling back to the crushing area, and being excessively crushed, resulting in waste of energy; and the cylinder is high, so more steel is used, which increases the cost. Big

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