Research and solutions to the problems of a crusher

Common fault analysis and processing, overload jumping overload Jumping is the overload protection action of a crushing roller or secondary crushing flat roller. The main reasons are as follows: (1) Infrastructure installation residuals and welding rods accidentally brought into the system during operation or overhaul, iron wire, bolts, nuts and other hard debris into the crusher, and cause crushing rollers Jamming discharge outlet chute poor or even blocked. (2) The original design granulation control parameters have a small operation interval, and the working conditions such as drying are difficult to control, the material granulation rate is low, the water content is high, and the viscosity is large, causing sticking, accumulation, and material blocking in the crusher, and export blocking materials. The corresponding observation and inspection of the original design of the door is not proper, and it is not convenient to observe and clean up in time. (3) The operation is not familiar, the working conditions are unstable, and sometimes the weather is humid, the water content of the material is high, and there are many large particles, which causes overloading of the crusher and adhesion, accumulation and material in the crushing chamber and import and export blocking.

In response to the above problems, the following measures have been taken with good results: (1) Strengthening the inspection of the previous process of the crusher, timely cleaning the iron absorber on the belt conveyor, and strictly prohibiting the entry of hard debris into the crusher. (2) Increase technical research, modify the granulation curve (cancel the sulfuric acid and ammonia in the original granulation regulator of KT Company, reduce the granulation temperature by about 10 °C), stabilize the drying system (control the dryer inlet mixing wind) The temperature is around 70 °C, and it is dried at a low temperature and high air volume to ensure the granulation rate of the material and strictly control the water content of the product (≤ 2%). (3) Add inspection doors on the inlet and outlet chutes for easy cleaning. (4) Correctly adjust the gap (2mm) between the rubber sheet and the flat roller of the scraper. (5) Strengthen the on-site inspection, timely transfer, clean up debris and accumulated materials; replace the triangular transmission belt in time. The primary crushing effect is poor, and the secondary crushing effect meets the requirements. The main reasons are: (1) When the original installation is performed, the setting of one crushing gap is large (designed as 4mm, actually 6mm); (2) hard and miscellaneous The object enters the crusher, causing damage to the combing edge comb plate at one time, part of the comb teeth being interrupted, and the working gap becoming larger.

The displacement sensor is damaged triple roll mill because of a displacement sensor external metal sleeve broken off and damage the internal displacement sensor probe, the inaccuracy caused by the gap, the device dysfunctional. The hydraulic system failure is mainly manifested in three aspects: (1) the action is too slow; (2) the high temperature of the hydraulic oil causes the interlocking action to jump; (3) the main solenoid valve (the external hydraulic oil) among the five solenoid valves is often Loss of electricity, the working gap of the crushing roller can not be adjusted, so that the jump. After analysis, the high temperature of the hydraulic oil is mainly caused by the action of the solenoid valve (outgoing oil-pressure-depressurization), and the frequent action accelerates the damage of the air switch; the action is too slow and the interlocking action may be related to the PLC program. The set value is related, so take the following measures. (1) Adjust the original setting value related to the PLC program and increase the working delay of the solenoid valve by 0.15s. (2) The oil temperature interlock value is set to 75 °C from the original 55 °C. (3) Replace the damaged air switch and other parts. 3?5 reducer failure On August 15, 2003, the broken SEW helical gear reducer of B crusher broke down. After disintegration, it was found that the first gear and bearing and oil seal were damaged. The main reason was that there were many large particles. , overload operation and frequent parking. After the replacement of the corresponding damaged parts is reset, it works well.

Hammer Mill is widely used for grinding granular materials,such as corn,sorghum,wheat,soybean,ets;

Hammer Mill is simple structure,safe,dependable,easily mounting and convenient operation,low vibration,high output;

The movable door and the linkage type pressure screen mechanism, the operation and maintenance is more convenient;

Safe operation door to ensure it is locked when operation.