Before starting the rake type vacuum drying machine, check whether the transmission parts and sealing parts of the machine body are in good condition; whether the cylinder body is clean and dry; check whether the vacuum suction nozzle is dry. Close the discharge port bonnet without problems, allowing the unit to start running.
In the first step, the feeding of the rake type vacuum drying machine is started to start feeding; then the vacuum pump is turned on, and when the tank reaches a certain degree of vacuum, the material tube is inserted into the powder, and the material is sucked into the tank by vacuum, and the charging must not exceed the volume. 0.5, and the material must not have a hard and fast material. If the material density or water content is too large, the feed amount should be reduced.
If the rake type vacuum drying machine is vacuum-loaded, the pumping is completed, the feed port is connected to the atmosphere, the valve on the vacuum line is closed, the feed nozzle is removed, the feed cap is installed, and the feed cap (or manhole is closed) Cover) and ensure that its sealing performance is good. Then, the vacuum line valve is opened in turn to achieve a certain degree of vacuum inside the tank; the drive motor is turned on to make the main shaft balance start and rotate; and the heating steam or hot water valve of the jacket and the shaft is opened to heat the tank and the shaft. Dry the material.
According to the operating experience, the recovery amount of dissolved coal and the temperature inside the vessel, when it is confirmed that the drying process of the material in the tank has ended, the steam (or hot water) is cut off and then the material is lowered to the appropriate temperature, the vacuum line valve is closed, and the vacuum system is opened. The venting valve on the upper side allows the tank to be connected to the atmosphere, and the boring shaft continues to operate, ready to discharge. Open the discharge valve to unload the material, turn off the main engine operation button and cut off the power after the discharge is completed; confirm the residue on the tank or the shaft when the power is off and watched, and close the discharge hole cover to Prevent flying dust from entering the tank.
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