The toothed roller crusher is generally used for the medium and fine crushing for brittle and medium-hard ores, and the size of the crushed product is usually not less than 20mm. Because of its simple structure, easy maintenance, and low price, it is popular to aggregate and coal ores suppliers.
How does the crusher machine work?
A double toothed crusher with less volume is composed of two toothed rollers which is installed in parallel and rotates 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.
toothed roll crusher's animation
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, and then being squeezed when they enter the toothed rollers to complete for the third crushing. Finally, the crushed material is discharged from the outlet with the rotation of the toothed roller.
Advantages of double toothed roll crusher
- The teeth and the gear are connected by bolts, which is easy to install and replace.
- The teeth are made of hard alloy which has strong impact resistance, wear-resistance and long service life.
- The double-toothed roller crusher has a good crushing effect on wet and viscous materials, and there will be no sticking or clogging during the use.
- At the same time, it is also environment-protection machine with low crushing noise and power consumption compared to other types of crushers.
- 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.
In what areas has the Fote tooth roll crusher been upgraded?
1. The company makes further improvement in the aspects of feed particle size, rotor diameter, rotor channel, etc., so that this series of products can adjust the corresponding rotor structure and the corresponding speed according to different materials and feed grain levels to cooperate, and can achieve higher production volume and higher fineness modulus.
2.This crusher equipment adopts double motor, double hydraulic coupler and double gear box.
3. The crushing gear is operated by hydraulic system, which is used to adjust the space between tooth rollers and control the grain size.
4. Hydraulic coupler overload protection and electric control overload protection can effectively prevent hard objects from damaging broken teeth.
Application of double toothed roll crusher in open pit mine
it can process various kinds of stones
In recent years, with the transformation and upgrading of the coal industry, the requirements for coal development efficiency and environmental protection are increasing day by day. In the field of coal chemical industry, the requirements for product particle size are extremely strict, and generally the particle size is between 25 mm and 70 mm.
If the particle size is too large, the crusher chamber will be blocked, and downstream processing cannot be carried out. The toothed roll crusher is currently used in coal crushing because of its large processing capacity, low fine powder producing rate.
Three main reasons applicable to the open crushing of ores
Strong meshing capacity
The crusher teeth are composed of big and small tooth phase interval, which can effectively improve the meshing capacity gear roller with the ensure of ideal particle size. Strong meshing capacity can improve the equipment processing capacity, reduce the tooth roller wear, prolong the tooth plate service life.
Easy replacement of parts
The connection between tooth plate and tooth roller base is made by screw fastening block, which not only guarantees the connection strength, but also has good interchangeability and replaceability.
Tooth material can withstand low temperature up to minus 30 degrees
Carbon bainite wear - resistant cast steel is used as the material of the tooth plate. The wear resistance of this material is about 40% higher than that of 40Cr surface-welded wear resistant layer. In addition, the whole tooth roller structure, including tooth plate, tooth roller seat, thread fastening block makes strength and hardness of each component more balanced and reasonable.
Besides, the motor is equipped with an electric heating system, and the hydraulic coupler and reducer are made of low temperature synthetic oil which ensures the transmission system smooth operation in the low temperature even with minus 30 ℃.
Double tooth roll crusher for sale in India
double toothed roll crusher in India
The Indian customer’s coal mine adopts the single-bucket truck with semi-continuous mining process, and the raw coal has large grain size, gangue with great hardness. In the original production line, he firstly crushed the material to less than 300mm, then crushed them to less than 70mm by a ring hammer crusher. The crushed material with 70mm was transported to the coal storage bunker by conveyor belt for screening to final products of 25 ~ 70mm.The customer's original ring hammer crusher after long-term use has the following problems:
- 1The product over-crushing rate is high, which seriously affects the economic benefits of the enterprise;
- 2The spindles, hammers and strainers are badly worn and often need to be replaced and maintained;
- 3High equipment failure rate, high maintenance cost.
Technical improvement is urgently needed in order to reduce the operation cost and labor intensity of workers, and ensure the normal operation of the production system. So, the user finally chose Fote toothed roll crusher to replace the original ring hammer crusher.
table: Results of discharging sieving test
|discharging size (mm)||productivity of ring hammer crusher(%)||productivity of double toothed roll crusher(%)|
After the double toothed roller crusher is put into use, the equipment runs stably, and the output particle size of the product has been improved obviously. The comparison shows that there is a 18.2% difference between the qualified products before and after the equipment replacement, which greatly increases the output of the qualified products and creates great economic benefits for the enterprise.
FAQ about the double toothed roll crusher
how to safely operate and maintain the double toothed roll crusher?
- 1Except for special circumstances, it is strictly prohibited to open the crusher machine with load. After stopping, the materials in the crusher should be emptied in time.
- 2After the crusher is stuck due to large blocks or materials, the crusher should be shut down and cleaned according to the power failure locking procedure. You should never open the cover during operation.
- 3Hydraulic couplings must be filled with medium water of the specified grade, and the volume is 11.7 liters.
- 4The filling medium water must be pure and free of impurities, and softening water should be used if necessary.
- 5The hoisting of the reducer must be correctly installed according to the requirements, and it is strictly prohibited to use the stretching shaft hoisting method.
- 6Grease the bearing of the crusher once a day.
- 7Before the normal stop, the feed should be stopped first, and only after the material in the crushing chamber is removed can the stop be made.
- 8When the machine is running, operators should be one meter away from the crusher.
- 9Never do any adjustment, cleaning and maintenance during the operation of the crusher to avoid danger.
- 10In winter, you should pay more attention to the thermal insulation work of hydraulic coupler to prevent frostbite.