Material blockage is a common failure of crushing machinery and equipment. In the production process of crushing machinery and equipment, once the material is blocked, the equipment will be forced to stop and affect the productivity. So, what are the reasons for counterattack and breakage and how to deal with it?
1. High humidity and viscosity of the material
If the water content of raw materials is large and viscous, the crushed materials will be easy to stick to the sides of screen holes and liners, which will lead to the reduction of crushing chamber volume and screen holes passing rate, resulting in material clogging.
Solution: You can preheat the impact plate and feed opening, install drying equipment, or insulate the material to reduce the moisture in the material.
2. High feed rates
When the
impact crusher is fed with too much material and too fast, it is too late for crushing and discharging, resulting in clogging.
Solution: During the feeding process, please pay attention to the deflection angle of the ammeter pointer. When the feeding volume is large, breaking the ammeter needle will be too large. When the rated current of the machine is exceeded, this will result in overloaded operation. In this case, too long a working time will lead to material blockage or even burn out the machine's motor. On the one hand, when this happens, it is necessary to immediately reduce the amount of feed and regulate it by adjusting the feeder.
3. Slow operation of the machine
Normally, the feed rate and discharge rate are balanced. Feeding speed is too fast will lead to clogging, while the discharge speed is too slow will also lead to a large amount of material clogging inside the machine, which will lead to clogging and make the equipment can not work properly.
Solution: In order to avoid overloading the machine, adjust the feeding speed according to the processing capacity of the machine; adjust the size of the discharge opening in time according to the actual situation of production, so that the crushed materials can be discharged smoothly. If the crushed material changes, should also adjust the size of the discharge port accordingly.
4, conveying material particles are too large, high hardness of materials
When the hardness of the material is large, it is not easy to rupture, or the particle size of the feed material exceeds a large range of the
impact crusher limits. When there is not enough crushing between the impact plate and the plate hammer, the discharge outlet will also be blocked.
Solution: Before the material enters the crushing chamber, the applicable materials of the impact crusher should be clarified, especially the requirements for the nature of the material to ensure the correct input to the crusher; it is not easy to put too much material into the crushing chamber. An electric bell and alarm light can be installed at the feed opening to control the feed to avoid clogging of too much material; After coarse crushing of large pieces of material, they are put into the crushing chamber in order to make the material as close or as much as possible to be crushed. Need to avoid material blockage.
5, serious wear and tear of equipment parts
If the main parts of the
impact crusher are worn, the crushing effect of the material will also cause blockage.
Solution: Pay attention to check the wear and tear of the parts and replace the severely worn parts in time to ensure the crushing effect of the material and reduce the material blockage.
6. The triangle belt is loose and the transmission kinetic energy is insufficient.
The crusher relies on the triangle belt to transfer the power to the trough to achieve the purpose of material crushing. If the triangle belt is too loose, it will not be able to drive the trough, affecting the crushing of materials or preventing the crushed materials from being removed smoothly. Resulting in clogging.
SOLUTION: During the production of crushing, please pay attention to check the looseness of the triangle belt. If it is not suitable, please adjust it in time.
7, Impact crusher main shaft damage
If the main shaft is damaged, it will involve all the parts of the equipment and will not be able to operate normally, thus stopping the equipment from moving, which will lead to material blockage.
Solution: The operation and maintenance personnel need to pay more attention to the maintenance and repair of the main shaft, timely lubrication, good maintenance, and solve the problem in time, so as not to affect normal production.
8. Improper use
Part of the cause of obstruction is operator error, may not be familiar with the process or temporary error.
Solution: Equipment operators must undergo rigorous training to qualify. They must be familiar not only with the operating specifications of the equipment, but also with the process of the entire production line.
9, crushing chamber design problems during the design process
Crushing chamber is the main place for impact crusher and impact crusher processing. It is discharged from the lower part after completion. If the design is not correct, the material is easy to cause blockage in the lower part of the crushing chamber.
Solution: The crushing chamber can be improved. A curved crushing chamber is used, i.e. the bite angle of the crushing chamber is gradually reduced from top to bottom. This type of crushing chamber facilitates the dropping of crushed chunks of material and also reduces the likelihood of crushing. The material can be discharged freely from the crushing zone, so that the material can be discharged smoothly and clogged. Material can be reduced.
When there is a problem with the impact crusher, we must first find the cause of the problem and then take targeted measures to solve the problem. If you have any questions or suggestions, please leave a message.
