The inert gas protection jet mill can control the oxygen content
The inert gas protection airflow crushing production line adopts fully enclosed negative pressure cycle operation, adopts PLC programming control to minimize human operation and control factors. The control cabinet can be placed in a separate control room at a distance. The packaging and discharging use automatic packaging machine, and the on-site observation adopts The monitoring probe can be completely unmanned, and it can also be used in series with a multi-stage classifier to produce products with multiple granularities at a time.
1. Oxygen isolation: Before starting the equipment, replace the air in the closed circulation system with nitrogen. At the same time, the closed feeding and unloading system can replace the small amount of air brought in during the feeding and unloading process with nitrogen to maintain the oxygen in the system. The content is basically stable.
During the process, an oxygen content tester is used to continuously monitor the oxygen content in the airflow, and when it exceeds a certain level, it will immediately add nitrogen to keep the oxygen content within the safety production standard.
2. Control the concentration of gas and powder: The feeding system of the equipment is a fully enclosed, uniform speed device, which is programmed and controlled by the control cabinet. Fully enclosed plays the role of isolating oxygen, while the uniform speed controls the concentration of the materials inside the added equipment, and the feeding speed can be set arbitrarily.
If the materials added to the equipment at a constant speed accumulate inside the equipment, there is no guarantee of safety. Therefore, the shape of the equipment, such as the bending angle of the pipe; the shape of each part, etc., are scientifically calculated to eliminate the dead corners inside the equipment. At the same time, driven and washed by the high-speed airflow in the equipment, the powder will not accumulate in the pipe.
3. Discharge static electricity in time and eliminate ignition sources: The special filter material with carbon steel wire used for the pulse blowback collector can eliminate static electricity in time and ensure that the pulse dust is clean and thorough. The equipment is all metal components, all grounded, in order to release the powder static electricity as much as possible.
4. Circulating air cooling: Because the whole system is a closed circuit system, there are multiple moving parts inside the equipment, which will produce a certain temperature during high-speed movement, and the temperature is very important to the safety in processing. Therefore, the equipment is equipped with a fin-type cooler on the pipeline, which can effectively reduce the safety hazards caused by the equipment working for a long time or working in a high temperature environment.
5. Explosion-proof: The whole system is equipped with explosion-proof holes in different positions of the pipelines, and the loss is minimized when the internal pressure and concentration of the system exceed the standard caused by explosions and explosions.
The motors and other devices used in the whole system are explosion-proof motors, which have better sealing performance and effectively reduce the accumulation of dust.
6. Emergency shutdown: The emergency shutdown trigger switch of the equipment is connected to the oxygen content tester. If the oxygen content concentration monitored by the oxygen content tester does not reach the preset value within the predetermined time, the emergency shutdown is triggered, the equipment stops feeding, and the induced draft fan When shutting down, the classifier shuts down after a delay, and the nitrogen supplement system continues to work until it is manually shut down.
The inert gas shielded jet pulverizer and classifier have been widely used in scientific research institutes, metal powder processing, pharmaceutical ultrafine powder and other fields. The technology is mature, the quality is reliable, and the performance is stable. It has been widely used in processing.