Product Overview
The hydraulic double-roll sand-making machine, also known as the hydraulic double-roll crusher or hydraulic twin-roll sand-making machine, is an upgraded version of the spring-loaded double-roll sand-making machine. It replaces the traditional spring mechanism with a hydraulic system. Suitable for medium and fine crushing of solid materials with compressive strength below 250 MPa and moisture content under 35%, such as river pebbles, iron ore, quartzite, and limestone. Widely applicable across mining, thermal power generation, cement and ceramics, metallurgy, chemical, and building materials industries.
Working Principle
The hydraulic double-roll sand-making machine features two high-strength rollers rotating in opposite directions. When material enters the narrow gap between the rollers, it undergoes intense compression, shearing and grinding forces, resulting in fragmentation into finer particles. An intelligent hydraulic system automatically adjusts the roller gap according to material hardness, ensuring consistent crushing performance and output particle size.
Core components of hydraulic double-roll sand-making machines
1. Hydraulic Roller Assembly
Comprising a pair of wear-resistant roller shells and roller shafts, where the shells form the direct crushing surface and the shafts transmit torque. This assembly constitutes the core operational component for material compression and sand production.
2. Intelligent Hydraulic System
Comprising hydraulic pump, hydraulic cylinder, relief valve, accumulator, etc. Precisely regulates roll gap, delivers crushing pressure, and provides overload protection via automatic rollback;
3. Drive Assembly
Includes motor, gear reducer, coupling/gearbox. Supplies stable, matched rotational speed and torque to roll shafts, ensuring synchronous counter-rotation of both rolls;
4. Roll Gap Adjustment Mechanism
Interlinked with the hydraulic system, this forms the core control for output particle size, enabling precise stepless adjustment within the 1-3mm range;
5. Frame and Bearing Housing
Employing a heavy-duty welded/cast steel frame paired with heavy-duty self-aligning bearing housings, it bears crushing and squeezing forces while ensuring structural rigidity and operational stability of the entire machine.
