Characteristics of Nitrogen Protected Grinding Equipment
Nitrogen protection grinding equipment is suitable for the grinding of explosive and oxidizable substances. The grinding effect of nitrogen protection airflow grinder is good, and the stability and safety are higher than that of general airflow grinder. The nitrogen-protected grinding equipment has a compact structure, polished inner and outer walls, no stock in the grinding box, no dead corners, easy to clean, and meets GMP requirements.
The materials collide and grind, and the materials with Mohs hardness 1-10 can be processed. The products are free of iron pollution and can be mixed and pulverized with several materials; good grinding efficiency and strict particle size distribution can be obtained, and the grinding particle size can be 2 -74μm can be adjusted arbitrarily, up to sub-micron level, and material loss is small; the whole system adopts a touch screen automatic control system, which can realize one-button start and stop, simple and convenient operation, and realize remote control.
Features of Nitrogen Protection Grinding Equipment:
1. Oxygen isolation: Before starting the feed, replace the air in the closed circulation system with nitrogen. At the same time, the closed feeding and unloading system can replace the air in Shaoli during the feeding and unloading process with nitrogen to maintain the oxygen in the system. The content is basically stable. During the grinding process, an oxygen content tester is used to continuously monitor the oxygen content in the airflow, and when it exceeds a certain level, nitrogen is added immediately to keep the oxygen content within the safety production standard.
2. Control the concentration of gas and powder: the feeding system 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, the high-speed airflow in the equipment is driven and washed, and the powder will not accumulate in the pipe.
3. Timely release of static electricity and elimination of 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 cleaning is clean and thorough. The nitrogen protection grinding equipment is all metal components, all grounded, and try to release the powder static electricity.
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 of 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.