Double cone rotary vacuum dryer with the international macro economic growth slowed, at this stage, it is the most favorable opportunity of petroleum and chemical industry structure adjustment. Petroleum and petrochemical enterprises should be based on the adjustment of industrial structure, energy-saving emission reduction and strategic emerging industry as the starting point and the focus of the work, speed up structural adjustment, transfer mode, the pace of transformation and upgrading. He thinks, the slow economic growth is likely to continue for a period of time. Speed up the transformation of economic growth mode, how to develop in the low growth and survival in low price and competition, is the market out of the plight of petroleum and chemical enterprises, improve the competitive ability and the only way to maintain sustainable development.
Double cone rotary vacuum dryer has the advantages of simple structure, easy cleaning, complete discharge, simple operation, can reduce labor intensity, improve the working environment. At the same time as the container the machine rotation material turning, and wall material is not deposited, so the heat transfer coefficient is high, the drying rate, not only to save energy, and even drying of the material fully, good quality, and can be widely used in pharmaceutical, chemical, food, dyestuff industry drying, with pharmaceutical industry "GMP" standard management requirements.
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.
The most common fault of double cone rotary vacuum dryer, the most intuitive table is refrigerant pressure gauge to zero. 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, that is have a death wish. What is called freon, brother do not know ah, that is the Freon Freon cylinder upright, from the upper cut-off valve 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. |
