Double Toothed Roll Crusher

Roller Crusher, Double Roller Crusher, Toothed Roll Crusher, Double toothed roll crusher

Double toothed roll crusher is essential equipment in small stone factories and it is a commonly used type of roller crusher. Because of its simple structure, easy maintenance, and low price, it is popular to aggregate and coal ore suppliers.

 

Types of roll crushers

According to the number of rollers, the roll crushers can be divided into three types: single roll crusher, double-roll crusher, and multi-roll crusher. And the most common one is double-roll crusher.

According to the surface of rolls, it can be divided into smooth roll crusher and toothed roll crusher. (The following roll crusher refers to “smooth roll crusher”.)

Types of roll crushers

Materials crushed by double roll crusher

Double toothed roll crusher is suitable for crushing various types of ores, used as secondary or tertiary crushing machinery. It is widely used in construction, metallurgy, building materials, water conservancy, electricity, refractory, and other industrial sectors.

1. Crushing various rocks

Double toothed roller crusher is generally used for crushing medium-hard rocks with compressive strength of less than 200 Mpa, such as limestone, phosphate, basalt, granite, river pebbles, iron ore, gold ore, copper ore, lead-zinc ore, nickel ore, asphalt, bricks, cement, and other materials.

2. The first choice for crushing coal

Double toothed roller crusher is a new type of equipment recommended by major coal plants for crushing raw coal, coke, lignite, and activated carbon. It crushes the coal by squeezing the double toothed rollers and easily removes the materials adhering to the rollers.

The roller crusher has dual functions of pre-screening and crushing. Small and medium-sized materials in the coal mine are directly leaked from the gap between the toothed rollers to avoid reprocessing. The phenomenon of over-crushing is improved.

3. Crushing sticky material

The toothed roller crusher is very useful for crushing clay, cohesive materials, or rocks mixed with soil with water content up to 30%, such as kaolin, bentonite, montmorillonite, etc.

Because equipped with a scraper and adjustable discharge size, it can keep the groove and working surface clean. For wet and viscous materials, it can easily complete the crushing operation without sticking or clogging.

Discharge granularity can be adjusted

The double roller crusher is equipped with a discharge regulating device. The crushing gear is operated by a hydraulic system, which is used to adjust the space between tooth rollers, more convenient and fast operation.

According to the actual production requirements, the users can adjust the size of the discharge by adjusting the top bolt of the wedge-shaped device. The particle size of the crushed product can reach 2-10 mm, to meet the need of different users.

How does the teethed roll crusher work?

A double toothed roll crusher with less volume is composed of two toothed rollers, which are installed in parallel and rotated in opposite directions.

The two-toothed rollers adopt non-meshing and non-constant speed operation to strengthen the degree of occlusion, which ideally prevents the material from slipping thus improving the crushing efficiency.

Generally speaking, materials are crushed in three stages in a double toothed roller crusher.

• The material enters the crushing chamber by the impact force of the deep tooth gear for the first crushing.
• The large-block material is cut by the teeth to complete the second crushing.
• Then squeezed when they enter the toothed rollers to complete the third crushing.
• Finally, the crushed material is discharged from the outlet with the rotation of the toothed roller.

Why is the roll crusher suitable for open pit crushing?

Toothed roll crusher has good applicability and plays an important role in open-pit mining, especially in open-pit coal production. Four reasons for open-pit ore crushing:

1. Strong meshing capacity

The teeth of the crusher are composed of large and small teeth at intervals, which can effectively improve the meshing ability of the toothed rollers while ensuring the ideal particle size. Strong meshing capacity can improve the equipment processing capacity, reduce the tooth roller wear, and prolong the tooth plate service life.

2. Easy replacement of parts

The connection between the tooth plate and tooth roller seat adopts a screw fastening block. It not only guarantees connection strength, but also has good interchangeability and replaceability.

3. Tooth material can withstand low temperature

The motor is equipped with an electric heating system, and the hydraulic coupling and reducer use low-temperature synthetic oil, which ensures the transmission system’s smooth operation even at a low temperature of -30°C.

4. High wear resistance

The tooth plate adopts medium carbon bainite wear-resistant cast steel. The wear resistance of this material is about 40% higher than that of the surfacing wear-resistant layer of 40Cr steel. In addition, the entire tooth roller structure, including the toothed plate, toothed roller seat, and threaded fastening block makes the strength and hardness of each component more balanced and reasonable.

Advantages of double toothed roll crusher

1. The company makes further improvements in the feed particle size, rotor diameter, rotor channel, etc., so that this series of products can adjust the corresponding rotor structure and speed to match according to different materials and feed grain levels.
2. This equipment adopts the double motor, double hydraulic coupler, and double gearbox. Hydraulic coupler overload protection and electric control overload protection can effectively prevent hard objects from damaging broken teeth.
3. The roller teeth of the crusher are arranged at a staggered angle of 15°, which has a good effect on avoiding large materials bouncing on the toothed rollers thus difficult to bite.
4. Our toothed roll crusher has the advantages of light weight, small size, low height of the whole machine, large particle size, and strong crushing capacity.
5. Compared with other types of crushers, it is an environment-friendly machine with low crushing noise and low energy consumption.

PRODUCT DATA

Technical Data of double toothed roll crusher:

Model	2PG0425	2PG0640	2PG0740	2PG0850	2PG1060	2PG1260	2PG1560
Roller diameter(mm)	Ф400	Ф600	Ф700	Ф800	Ф1000	Ф1200	Ф1500
Roller width(mm)	250	400	400	500	600	600	600
Input Size(mm)	≤25	≤25	≤25	≤25	≤30	≤30	≤30
Discharging Gate(mm)	2-8	2-8	2-8	2-8	2-10	2-10	2-10
Processing capacity(t/h)	3-10	5-20	10-30	15-40	20-50	25-70	30-110
Power Models	Y132M-6	Y180L-6	Y200L-4	Y225M-4	Y250M-4	Y315M-6	Y315L-6
Motor power(kw)	5.5×2	15×2	30×2	45×2	55×2	75×2	110×2

Note: Capacity May Vary with Different Materials and Feed Sizes.