High Efficiency Raymond Mill

Abstract

The invention discloses an efficient Raymond mill. The efficient Raymond mill comprises a base and an outer cylinder, wherein a classifier is mounted at the top of the outer cylinder, and classifying impellers are located at the top of an inner chamber of the outer cylinder; a shaft seat is fixedly connected to the lower part of an inner chamber of the base; a spindle is rotationally connected in the shaft seat, the upper end of the spindle extends into the inner chamber of the outer cylinder, and the lower end penetrates out of the base; a grinding roll bracket is connected to the upper end of the spindle, grinding roll shafts are hinged to the grinding roll bracket, and grinding rolls are mounted at the lower ends of the grinding roll shafts; a grinding ring capable of cooperating with the grinding rolls is fixedly connected to the upper part of the inner chamber of the base; a shoveling chamber is formed in a chamber section between the grinding ring and the shaft seat in the inner chamber of the base, a shovel blade rotating disc fixedly connected onto the spindle and connected with a shovel blade is arranged in the shoveling chamber, and a feeding port is formed in the outer cylinder; air inlets are formed in the shaft seat and communicate the shoveling chamber and external space of the bottom of the base, so that air feeding from the bottom of the Raymond mill is realized. The efficient Raymond mill has low air inlet resistance and can reduce energy consumption; over grinding of materials can be reduced, the grinding efficiency is high, and the noise is small.

Description

Technical field [0001] The invention relates to a mechanical equipment for crushing materials, in particular to a Raymond mill. Background technique [0002] Raymond pulverizer is one of the most widely used equipment for processing non-metallic minerals. The basic structure of the existing Raymond pulverizer is as follows: It includes a base with an axially penetrating cavity, and a cylinder connected to the base. The top of the barrel is equipped with a classifier, and the grading impeller of the classifier is located at the top of the inner cavity of the barrel; the lower part of the inner cavity of the machine base is fixedly connected with a shaft seat, and the shaft seat is rotatably connected with the main shaft. The upper end of the main shaft extends into the inner cavity of the barrel and the lower end passes The machine base can be dynamically connected with the driving device; the upper end of the main shaft is connected with a grinding roller support, and a plurality...

AI Technical Summary

Problems solved by technology

[0003] The existing Raymond mill with the above-mentioned structure mainly has the following defects: 1. Since the air inlet hole is arranged on the side wall of the shovel chamber, the air inlet mode is side air inlet, that is, the air inlet is from the outer periphery of the machine base, and the wind direction From the outside to the inside, while the shovel of the Raymond mill is working, the particles of the material to be ground move and accumulate in the direction of the outer circumference under the action of centrifugal force, and the direction of movement is opposite to the direction of the air inlet, resulting in excessive resistance to the air inlet or blockage The surrounding air intake channels lead to poor ventilation, which increases the resistance of the system and increases the energy consumption of the Raymond mill system; usually when the Raymond mill system is running, the energy consumed by the airflow operation accounts for about half of the total energy consumption of the system, reducing the airflow consumption Energy is an important way to reduce energy consumption of Raymond mill system

2. The rotation of the grinding roller and the grinding roller bracket causes the rising gas-solid two-phase flow to rotate, so that the crushed solid phase material is subjected to centrifugal action, sticks to the cylinder wall, and falls back to the crushing area along the cylinder wall, causing the material to be over-crushed , reducing the crushing efficiency

3. Vigorous impact between the grinding roller and the grinding ring produces noise, which is transmitted to the cylinder through the base and radiates into the air, and the noise is directly transmitted, resulting in excessive noise

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