Double cone rotary vacuum dryer is a set of drying equipment, mixing, vacuum drying in one. Double cone rotary vacuum dryer angle is 90 ° ~ 60 ° (static visual material angle dependent), material filling rate is 30% ~ 50%. The rotate speed of the equipment according to general 42.3D N r/min (D ≤? To determine the maximum rotating diameter). The jacket on the heat transfer coefficient U is independent of operating pressure, the non bonding material U=116 ~ 140W/ (M? K), bonding material U=80 ~ 93W/ (M? K). The heat transfer area of the cylinder wall material contact area for the calculation basis. Double cone rotary vacuum dryer cylinder design according to the pressure vessel under external pressure, inner cylinder, outer cylinder under internal pressure. The process of vacuum drying is cylinder drying material is arranged in the sealed, vacuum system for vacuum drying of materials at the same time on the continuous heating, so the material internal moisture by pressure differential or differential concentration diffusion to the surface, the water molecules (or other non condensable gas) on the material surface to obtain enough kinetic energy, spread to the low voltage space vacuum chamber in overcoming the mutual attraction between molecules, pumped out by the vacuum pump and complete with solid separation. Double cone rotary vacuum dryer has the advantages of small size, convenient installation and repair. Double cone rotary vacuum dryer with significant economic benefits. From the characteristics of above introduction, energy consumption, improve industry quality, health and safety vacuum dryer sustainable development, equipment investment and low cost etc. it can be seen that the economic benefit and social benefit significantly.
The advantages of double cone rotary vacuum dryer:
1, efficient conventional vacuum dryer by steam heating, the need for heating from the inside to the outside, the heating speed requires a lot of coal, and the double cone rotary vacuum dryer is used in electromagnetic wave heating, no heat transfer media, direct heating to object, fast heating, water can be 1 kilowatts together with the vacuum dryer room temperature face integration in 3-5 minutes, improving technological management is the key to heat to 100 ℃, avoid the disadvantages, so fast speed, high efficiency, the drying period is greatly shortened, reducing energy consumption. Compared with the conventional drying technology can improve the working efficiency more than four times.
2, double cone rotary vacuum dryer industry good quality, compared with the conventional method, the processing industry quality has greatly improved. Due to the moisture in the vaporization process temperature and steam pressure is proportional to, so the vacuum drying at low temperature, moisture can be vaporized material, low temperature drying, especially suitable for heat sensitive materials in pharmaceutical production. Vacuum drying can eliminate surface hardening phenomenon caused by the atmospheric pressure hot air drying, this is because the material of vacuum drying and surface pressure, the pressure gradient effect, water quickly move to the surface, no surface hardening.
3, double cone rotary vacuum dryer is uniformly heated due to heating, is from the inside to the outside of the materials are heated at the same time, the temperature difference between inside and outside the material is very small, do not produce and conventional heating in the heating inconsistent conditions, resulting in the effect of expansion, to smash, the drying quality greatly improved. Double cone rotary vacuum dryer is easy to control, convenient and continuous production and automation, the power can be adjusted rapidly and no inertia, easy real-time control, can adjust the temperature between 40 ℃ -100 ℃.
4, double cone rotary vacuum dryer with disinfection, sterilization effect, industrial safety and health. Long shelf life. The process of vacuum drying, the cylinder pressure is always lower than the atmospheric pressure, less number of gas molecules, low density, low oxygen content, thus drying easy oxidation of drugs, reduce material contamination opportunity. Because the vacuum drying, the material between the internal and external temperature gradient is small, the reverse osmosis allows moisture to move independently and collect, overcome the phenomenon of air drying the separated. |
