Roll Crusher
Capacity: 2-140t/h
Feeding size: <150mm
Output size: ≤2-50mm
Application: Limestone, river pebbles, coal, dolomite, granite, weathered rock, basalt, iron ore, quartz stone, cement clinker, coal gangue, etc.
Overview
Introduction: Roller crusher is suitable for coarse and intermediate crushing of brittle and massive materials in industries such as cement, chemical industry, electric power, mining, metallurgy, building materials, refractory materials, coal mines, etc. The granularity is adjustable, which can crush the material with vertical compression strength ≤160MPa.
Especially in the coal industry, using this machine to crush raw coal, it can be directly crushed only after removing iron, impurities and without gangue. The crushed materials have an average particle size and a low over-crushing rate, which simplifies the coal preparation process. Reduced investment and production costs.
working principle of double roller crusher
When the two-roller crusher works, the two rollers rotate towards each other, and the material entering the crushing roller is affected by the friction between it and the roller. As the rollers continue to rotate, the material is brought into the crushing cavity formed by the two rollers In the process, the material is crushed by being pressed, and then discharged from the lower part of the crushing roller. The width of the discharge opening of the crusher is determined by the minimum gap between the two rollers, and the width of the discharge opening determines the maximum particle size of the crushed product.
The crushed material falls between the two rollers through the feed port and is crushed by extrusion. Finished materials fall naturally, when there are too hard or unbreakable objects, the rollers of the roller crusher can be automatically withdrawn by the action of the hydraulic cylinder or spring, so that the gap between the rollers increases, and the hard or unbreakable objects fall, thus protecting the machine from damage. The two rollers rotating towards each other have a certain gap, and changing the gap can control the maximum discharge size of the product.
Features of roller crusher
- The particle size of the crushed material is uniform, the over-crushing rate is low, the maintenance is convenient, safe and reliable;
- Simple structure, small footprint, easy operation and maintenance. Made of high wear-resistant materials;
- Low maintenance cost, low noise, less dust;
- Excellent running performance, high energy and energy saving, green and low carbon.
Products display
models & specifications
| Model | Input size | Output size | Capacity | Power |
| (mm) | (mm) | (T/h) | (KW) | |
| 2PG0404 | 120 | 10-50 | 6-40 | 4×2 |
| 2PG0605 | 200 | 10-70 | 10-80 | 11×2 |
| 2PG0806 | 300 | 10-90 | 20-150 | 15×2 |
| 2PG1008 | 400 | 10-110 | 30-200 | 18.5×2 |
| 2PG0812 | 300 | 10-90 | 40-280 | 22×2 |
| 2PG1012 | 400 | 10-110 | 50-350 | 30×2 |
| 2PG1212 | 700 | 10-140 | 65-450 | 37×2 |
| 2PG1612 | 1000 | 10-180 | 80-600 | 75×2 |
| 2PG1618 | 1000 | 10-200 | 90-780 | 90×2 |
The pair of roller crushers are mainly composed of rollers, roller support bearings, pressing and adjusting devices, and driving devices. One roller bearing of the double roller crusher is fixed, and the other is that the roller bearing is movable.
★Crushing roller As the main working mechanism of the crusher, the crushing roller is installed in parallel on the horizontal axis to make the opposite rotation movement. According to whether the bearing is movable, the crushing roller is divided into moving roller and static roller. The crushing roller mainly includes roller surface, wheel blade and shaft. The roller surface is made of three tapered arc irons and is fixed together with bolts and nuts. The roller shaft is fixed with the key and the wheel cone which is tapered on the surface. Due to the direct contact between the roller skin and the material, the roller skin often wears, so the roller surface often needs to be replaced.
★Transmission device The transmission device is an intermediate device, which can transfer the power of the power device (motor) to the moving roller and the static roller, so that the moving roller and the static roller rotate relative to each other.
★Rack The working environment of the roller crusher is harsh, so the frame must be firm and reliable. The frame material of the roller crusher is usually made of cast iron or steel, and it is manufactured by riveting or welding.
★ Adjustment device The adjusting device is mainly used to adjust the size of the gap between the moving roller and the static roller, so as to control the granularity of the crushed product.
★ Overload protection device The overload protection device is one of the important components of the roller crusher. At present, more overload protection devices use springs, and the state of the spring determines whether the crusher can operate normally.
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