Inert gas protective gas flow grinding isolate oxygen. Before the equipment is started, the air in the closed circulation system is started, and the air is closed, and the discharge system can be replaced with a small amount of air brought by the addition and discharge process, and maintains the content of the system in the system. In the process, the oxygen content tester continuously monitors the oxygen content in the airflow, and nitrogen is supplemented immediately when it exceeds some extent, so that the oxygen content is always maintained within the safety production standard.Airflow pulverizer is widely used in chemical, minerals, metallurgy, abrasives, ceramics, refractory materials, pharmaceuticals, pesticides, food, health products, new materials and other industries. It must be understood when using the airflow pulverizer, so that the hazard coefficient can be reduced to the smallest, and as long as it is familiar with the operating procedures, it is also critical to our equipment. Herein the summary summary Out of the step of using
airflow pulverizer. First, the airflow crusher is prepared before
1. Check the host, accompaniment, and pipelines, valves, etc. must be in good condition.
2, set the frequency and bandwidth of the pulse controller to ensure smooth filter bag.
Second, boot
1, before opening the press, the freeze dryer, open the in-cooling valve to ensure that the cooling water flows normally.
2, the startup operation of the compressor requires the regulations of the compressor instructions.
3, the gas storage tank pressure is adjusted to 0.1 MPa higher than the pulverization pressure by the pressure regulator of the compressor.
4, open the freeze dryer, determine the pressure in accordance with the requirements.
5, open the shaft cleaning valve and the airtight sealing valve, and adjust the pressure at 0.1 to 0.3 MPa, then start the grading wheel, start from zero by the inverter, gradually adjust the required speed.
6. Close the wind turbine adjustment valve, open the air blower, and then gradually open the air air supply valve to adjust the air volume required.
7. Open the main gas valve, when the pulverizer reaches 0.8 MPa; open the trap counter-blowing valve, so that the anti-blow valve pressure reaches 0.4 to 0.6 MPa; then open the cyclone separator and trap detract of the cyclone.
8, the addition should pay attention to the level of control, check whether the upper limit of the hierarchical impeller current is eliminated, if it does not meet, reset it.
Third, the operation regulations
The system uses advanced PLC + touch screen control mode. The touch screen is the operating terminal of this system, so it is critical to the function of all keys on the screen. The system is critical to the correct operation.
Fourth, stop
1. Stop the spiral feeder feeding. 2. Turn off the main gas valve and stop the compressor. 3. Turn off the air inletter in the air, and stop the fan. 4. Stop-level impeller motor, turn off the cleaning valve and sealing valve. 5. Stop the wind spindlers and trap detractive valves. 6. After the stop is over, turn off the control box power.
V. Precautions
1. When the discharge is running, it is strictly forbidden to extend the hand into the outlet of the unloader to prevent injured. 2. The grading impeller speed cannot exceed the specified value, otherwise the grading wheel and the motor are destroyed. 3. The safety valve must be regularly verified.
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