互换人妻HD中字,亚洲综合另类小说色区

综合激情五月丁香久久,久久香蕉超碰97国产精品,黑人上司粗大拔不出来电影,亚洲色大成网站WWW永久

Effects of material factors on the drying effect of double cone rotary vacuum dryer

Rotating speed double cone rotary vacuum dryer cylinder drying speed faster, higher. But in the late stage of drying double cone rotary vacuum dryer, with the decline in moisture content, drying rate also decreased, then increased speed on drying rate are useless. In addition, in the initial drying stage, double cone rotary vacuum dryer faster rotation speed, will cause the moisture evaporation caused by excessive material bonded into a group phenomenon. Therefore, should use low speed during the initial stage of drying, the material surface is dry and no agglomeration and improve the speed, so as to accelerate the drying rate, shorten the drying time.
　　Double cone rotary vacuum dryer selection of variable frequency motor, the rotation speed of barrel can be changed at run time, and the menu can be set different time the different cylinder rotating speed (0~10rpm stepless speed regulation), which are time - speed setting.
　　Double cone rotary vacuum dryer material issues considered in the selection of
　　The characteristics of raw material
　　(1) material: material viscosity viscosity with moisture and viscosity changes, can cause the material to be reunited into blocks, and the adhesion of cylinder wall, dry and easy adhesion in the dust collector and a pipe. In order to solve this problem, the suspension type double cone rotary vacuum dryer Changzhou fanqun drying equipment Co., the company's newly developed by the pneumatic shock and crushing device.
　　(2) the permissible temperature materials: allowable temperature is the highest temperature material can bear, exceeding the temperature will lead to material change, damage or discoloration decomposition titer. Heat sensitive medicine can be used commonly ≤ 60 ℃.
　　(3) the bulk density of materials: Materials' bulk density in a unit volume of material quality. Because the material is dry mixture material with moisture, dry material often for granular or powder, as the materials of different causes of dry wet gap between particles are also different. The original wet bulk density material material and drying process also have very big difference, this you must pay attention to in the raw material preparation.
　　(4) the material slip angle: stacked granular or powder materials, when the material stack and the angle between the inclined bottom surface increases to a certain point of time, will occur side material down phenomenon. This material sliding oblique angle with the bottom of the material called slip angle. Slip angle and the material composition, moisture content, particle size and viscosity of the. The design and selection of the double cone rotary vacuum dryer, should be selected according to the cylinder body double cone material slip angle.