Mechanical Overview

The toothed-roll crusher (hydraulic type) features a compact size, a large crushing ratio (5-8), low noise levels, a simple structure, easy maintenance, hydraulic adjustment of discharge particle size, high productivity, high product yield, uniform particle size of the crushed material, convenient maintenance, sensitive overload protection, and reliable safety.

The toothed-roll crusher (hydraulic type) is suitable for industries such as lithium batteries, coal, ceramics, metallurgy, mining, chemical engineering, and building materials. It is particularly well-suited for crushing lepidolite, spodumene, or raw coal (including gangue) in large-scale lithium battery plants. The motor and reducer of the toothed-roll crusher are connected via an overload-protection coupling to prevent power overloads, and the system features sensor-based overload protection, ensuring safety and reliability.

The spacing between the toothed rollers can be adjusted according to the discharge requirements, and the roller bearings are centrally lubricated. The tooth profile is optimally designed for efficient crushing through compression, tension, and shear forces, resulting in high efficiency, low energy consumption, and uniform particle size. Depending on the characteristics and requirements of the material being crushed, the toothed roller crusher can be equipped with coarse-toothed rollers, medium-toothed rollers, or fine-toothed rollers.

Working principle

The toothed-roll crusher (hydraulic type) primarily uses specially designed, wear-resistant toothed rolls that rotate at high speed to shear and compress the material, thereby achieving a mechanism with high productivity.

The toothed-roll crusher consists of a transmission device, a frame section, crushing rollers, a hydraulic thrust device, a hydraulic adjustment device, and a linkage mechanism, among other components.

The particle size of the output from a toothed-roll crusher is related to the selected toothed-roll structure type; when making your selection, please specify the desired output particle size.

After the roller surface wears down, the discharge opening width increases, allowing the movable roller to be adjusted at any time. After adjustment, the discharge opening width decreases, effectively ensuring a high yield of finished products.

Performance Features

• Employs an intelligent hydraulic control system.

The main hydraulic cylinder pressure is adjustable from 6 to 20 MPa and can crush medium- and high-hardness materials. Digital control makes it convenient and quick to adjust the gap between the rollers.

• Features both screening and crushing functions.

The two toothed rollers are fixedly installed, and their relative motion resembles that of a rotating grizzly screen. Materials meeting the particle-size requirements first pass through the gaps between the toothed rollers or between the rollers and the lining plates, achieving preliminary screening. This prevents those materials from undergoing further crushing by the roller teeth themselves, thereby reducing both over-crushing and energy consumption, shortening the time the roller teeth spend in operation, and extending their service life. At the same time, the toothed rollers rotate at the same speed in opposite directions, delivering superior shearing and compressive crushing effects. Moreover, the movement of the roller teeth forces the crushed material to be discharged efficiently, making blockages less likely to occur. As a result, this configuration is particularly well-suited for handling sticky materials and materials with high moisture content.

• Employs dual overload protection

① The overload protection coupling, on the one hand, absorbs the impact forces generated during breakage to ensure smooth machine operation; on the other hand, it provides safety protection for the entire machine. Once the equipment becomes jammed internally or exceeds its capacity,

When overloaded, the overload protection coupling automatically cuts off power transmission, causing the motor to idle and thereby protecting both the motor and the gearbox.

②The machine is equipped with a hydraulic overload cushioning device. When the toothed rollers are overloaded due to excessive crushing force, the hydraulic cylinder will be forced to move radially outward horizontally, thereby increasing the gap between the toothed rollers and providing simultaneous protection for both the toothed rollers and the main shaft.

• Flexible assembly, easy maintenance

The toothed roller body can be manufactured either as an integral roller body or as a split liner, depending on customer requirements. The integral roller body features an advanced assembly technology for the roller ring, which significantly improves the utilization rate of the roller’s wear-resistant layer and reduces users’ production and maintenance costs. In the split-type toothed roller, the crushing teeth plates and tooth rings are mounted on the shaft and secured with bolts. When the wear of the tooth sleeves reaches a certain level during the crushing process, individual components can be quickly replaced, thereby minimizing downtime and lowering production costs.

• Reasonably structured, long service life

The crushing roller teeth feature a special helical arrangement that not only facilitates the discharge of materials meeting particle-size requirements but also reduces the number of teeth simultaneously bearing load, thereby enabling efficient crushing of large-sized materials. At the same time, the dual-action effect of the tooth tips and tooth bases ensures thorough material crushing, reducing the workload on individual teeth, enhancing crushing efficiency, and extending the service life of the entire machine.

Technical Parameters