Double cone rotary vacuum dryer is through pumped air to inner packing container reaches a predetermined vacuum degree, member inside container moisture removal device. Drying time, vacuum in the tank, the jacket through hot water (or steam, conducting oil heating, with low speed rotary tank), the material in the tank has been under, and into "Diamond track" movement and absorption of water vapor through evaporation, vacuum line to continuously discharge, to achieve material drying purpose. In the dry mixture at the same time, according to customer requirements, filtering, crushing and other built-in spray device can realize the multifunction operation. When the oil is heated, the use of automatic temperature control, can dry the biochemical products and mineral raw materials, temperature is between 20 ~ 160 ℃, temperature 2 ℃ ±.
High thermal efficiency, increased more than 2 times than the general oven.
Indirect heating, the material can not be polluted, conform to "GMP" standard. Equipment repair operation is simple, easy to clean.
Double cone rotary vacuum dryer will appear the refrigerant pressure gauge zero phenomenon in production. How to solve? The following one by one investigation method to tell you:
Leakage of fluorine should first find the leak, check the leak need patience careful and certain method.
Concrete is: first with the visual method, open the machine box board observed inside the machine, as the refrigerant at run time, will have the compressor lubricating oil mixed in there, if the Freon leaks will bring out the lubricating oil, then carefully observed inside the machine, if oil pollution have shaped belt, it is likely to be leak location. Then the copper capillary tube inspection inside the machine, that the brass and the process of 6 mm below the thin tube, has not broken phenomenon. Through the above basic check, mark on where there is doubt. Then you need an inert gas through a certain pressure filling to confirm the leak. Under the conditions of best use of nitrogen pressure, no use of Freon nitrogen also, prohibit the use of oxygen pressure leak from the upper cut-off valve, freon is out of gas, and the cylinder valve down is a liquid freon. Holding pressure, should be slowly adding gas, side pressure side refrigerant pressure gauge were cold and dry machine (small cube only the refrigerant pressure gauge, 15 cubic above the high and low pressure two refrigerant table), pressurized to 0.2Mpa (2.0kgf) to temporarily stop around, and then carefully listen to the interior of the machine or leakage. Sound, if there is to find the leak sound location. If not, continue to pressure to 0.4-0.5Mpa. then find sponge dipped in soapy water, now where there is doubt check, then check the machine internal all connections (nano copper nut). If there is a leak, will have a bubble blowing gun out, this process requires a very careful. If the above method still did not find the leak, so unfortunately, very has the possibility is the evaporator leakage. The evaporator leakage treatment up more trouble. We must confirm, can disconnect the evaporator and refrigeration system, and then separate packing to confirm, if separate packing pressure drop can be determined after the discovery. |
