Laboratory Double Roll Crusher is a high-efficiency crushing equipment specifically designed for research institutions, university laboratories, and small enterprises. It achieves precise crushing of various materials through two counter-rotating high-strength rollers. With its compact structure, user-friendly operation, and flexible adjustability, this equipment plays a vital role in sample preparation across multiple industries such as coal, metallurgy, chemical engineering, building materials, and geology. This article provides a detailed introduction to the working principle, technical features, and typical application scenarios of the laboratory double roll crusher.
Working Principle and Structural Design
The laboratory double roll crusher operates based on the principle of inter-particle compression between two rollers. Its core components include the rolls, roller support bearings, compression and adjustment devices, and the drive unit. During operation, the material to be crushed is fed into the gap between the two rollers. As the rollers rotate at differential speeds, the material is crushed by compressive forces, and the finished product naturally discharges. The gap between the two rollers can be precisely adjusted using a wedge or shim mechanism to control the discharge particle size. When encountering unbreakable or overly hard materials, a spring protection mechanism automatically retracts the rollers, increasing the gap to prevent damage to the machine.
Modern laboratory double roll crushers incorporate several structural optimizations, such as a fully sealed design to effectively prevent dust pollution, specially treated roller surfaces to avoid material adhesion, and an intelligent control system that enables real-time monitoring and parameter adjustment. Depending on the material being processed, the rollers can be made of zirconia, alumina ceramics, or special steel to meet the requirements of high-purity or high-hardness material crushing. The equipment typically employs gear or belt transmission to ensure smooth and low-noise operation, making it highly suitable for small-batch sample processing in laboratory environments.
Performance Features and Technical Parameters
The laboratory double roll crusher offers several outstanding performance characteristics: it employs inter-particle compression crushing, making it suitable for brittle materials, with crushed products often exhibiting regular flake shapes; the compressive strength of the processed materials generally does not exceed 60–80 MPa, with a hardness level of up to 3; if the moisture content of the material exceeds 6%, particle agglomeration may occur. The equipment features a simple and rational structure, easy maintenance, straightforward operation, uniform discharge particle size, flexible adjustment, and stable performance.
