Coal Feeder Breaker is a common material crushing and conveying equipment, which is widely used in mining, chemical industry, metallurgy, building materials and other fields. However, due to the Coal Feeder Breaker in long-term operation and use, the existence of chain break accidents will bring great economic losses and security risks to the enterprise.
Therefore, it is very important to study the cause of Coal Feeder Breaker's chain breaking accident and put forward the corresponding prevention and protection measures. This paper analyzes and summarizes the causes of broken chain accidents, the types of broken chain protection devices and their advantages and disadvantages, and provides some reference and guidance for enterprises when using Coal Feeder Breaker.
The reasons for the broken chain accident of Coal Feeder Breaker are complex, mainly including the following aspects:
1. The nature of the material: for some large particle size, high hardness of the material, easy to cause the wear of the Coal Feeder Breaker chain, in the long run, the chain cracking or chain jumping probability will gradually increase.
2. Quality of the chain: the chain is an important transmission part of the Coal Feeder Breaker, and its quality is directly related to the operating efficiency and operating cost of the Coal Feeder Breaker. Some poor quality chains are easy to break or damage during operation.
3. Operating conditions of Coal Feeder Breaker: long-term continuous operation, wear of some parts and vibration of equipment will affect the chain of Coal Feeder Breaker, which will lead to the break of the chain.
4. Human factors: improper operation, maintenance is not in place and other human factors are also very easy to cause Coal Feeder Breaker chain break accidents.
In order to effectively prevent the occurrence of Coal Feeder Breaker broken chain accidents, it is necessary to take corresponding measures in the design and use of equipment. Here, we mainly talk about the following four kinds of broken chain protection devices and their advantages and disadvantages.
1. Chain relaxation sensor Chain relaxation sensor is a common broken chain protection device, its working principle is by sensing the tightness of the chain, when the chain is relaxed, the sensor can issue an alarm or stop signal in time to avoid further relaxation and damage of the chain. Advantages: Easy to use and install, and can monitor the tightness of the chain in real time, so as to effectively prevent the chain from being disconnected or broken. Disadvantages: False alarms may occur if some dust and impurities are adhered to the surface of the chain.
2. Chain pressure protection Chain pressure protection is also known as the chain break protection device, the device by sensing the pressure change of the chain, when the pressure on the chain is too large, it can issue an alarm or automatic shutdown in time to protect the integrity of the chain. Advantages: It has a variety of operation modes and can be set according to different use occasions. Disadvantages: The relaxation of the chain cannot be monitored, that is, if the chain is tight and subject to additional impact force, it may still cause damage to the chain.
3. Chain stuck protection Chain stuck protection is a broken chain protection device according to the chain stuck situation, its working principle is to sense the chain through the sensor, when the chain stuck, it will automatically brake and issue an alarm. Advantages: It can detect the blockage of the chain in time, and avoid further damage to the chain because of the blockage. Disadvantages: The device is highly sensitive, the positioning requirements of the chain are high, and the application occasions are limited.
4. Chain infrared protection Chain infrared protection is a new type of chain break protection device, its working principle is to monitor the situation of the chain through the infrared sensor, in the chain slack, chain jump and broken chain and other abnormal situations, the device will make a corresponding response to protect the operation of the equipment safety.
Advantages: In terms of mechanical assembly and operating environment, it has a good adaptability in terms of devices and sensors.
Disadvantages: If the high temperature heat source acts, the infrared sensor will fail, and special attention needs to be paid to the environmental restrictions.
Third, Coal Feeder Breaker chain accident prevention countermeasures
1. The material requirements should minimize its wear on the Coal Feeder Breaker, and pay attention to prevent large materials from getting stuck in the chain gap when the material is transported.
2. The regular repair, maintenance and maintenance of the equipment can find and deal with the damage on the chain in time to ensure the normal rotation of the Coal Feeder Breaker.
3. Set up detailed operating procedures for Coal Feeder Breaker, formulate specific operating steps, train qualified professionals, and ensure that the qualification and skill level of professionals meet the standard.
4. Install appropriate chain break protection device and comply with relevant regulations, timely maintenance, regular testing and calibration of the device to improve the safe operation of the equipment.
5. In the selection of chain material and strengthen the chain structure design, choose high-quality materials to strengthen the strength of the chain head, middle section and chain tail connection to improve its carrying capacity and enhance the shock absorption function.
Coal Feeder Breaker is an important material conveying equipment, but the economic losses and safety hazards caused by its chain break accidents should be paid attention to. By focusing on the analysis of the root causes and causes of Coal Feeder Breaker chain breakage accidents, and summarizing the advantages and disadvantages of different types of chain protection devices, this paper puts forward corresponding prevention and protection measures, and provides guiding suggestions for enterprises when using Coal Feeder Breaker. It ensures the operation safety of the enterprise.
