In the drying efficiency, double cone rotary vacuum dryer at a higher level. Due to the drying tank body double cone rotary vacuum dryer adopts double conical design, which can be both inside and outside the stirred in the mixing of the materials, which can effectively increase the contact area of the materials and the inner wall of the tank body; in addition, due to the double cone rotary vacuum dryer in the work process is in a vacuum state, thus effectively enhances the drying speed and drying the degree of uniformity; it is worth mentioning that, vacuum drying state of the double cone rotary vacuum dryer can effectively reduce the chance of contaminated materials, which for enterprises is to improve the efficiency of the important factors.
Double cone rotary vacuum dryer rotary cylinder body double cone, cylinder in the vacuum condition, the jacket is filled with steam or hot water for heating, heat through the wall of cylinder body contact with the wet material, wet material absorbs water evaporation, through the process of vacuum pump vacuum exhaust tube was removed. Bound volume through the process of exhibition style to the national publication, popular reception of readers, the advertisement effect is good. The machine operating steam as the heat source, through the process of heat radiator, the operation of vacuum drying. Special design of tooling, fully embodies the two supporting shaft well together, twist heat medium and vacuum system are reliable USA technology. Induced, less fine powder, drug quality unchanged, retained a long time. Because of the pot body flow, to obtain full assimilation. Microbial detection: after sampling a cotton swab on the sterilization of physiological saline 20ml, ultrasonic washing 2min, taking washing water for the microbial limit inspection.
Double cone rotary vacuum dryer in the jacket of the convective heat transfer to provide heat and cold, so the jacket will experience with hot steam for heating or cooling of the cooling water method. Improve the heat medium temperature can accelerate heating speed, shorten the drying time. For the viscous material, the heat medium temperature high prone to agglomeration phenomena. To reduce the temperature of the cooling water can accelerate the cooling speed, but also can shorten work period. With the material of a different nature, can choose the appropriate temperature, often preferred to variable temperature drying method, namely in the early period of drying temperature is low, gradually raising the temperature to increase the rate of drying.
Double cone rotary vacuum dryer in the jacket of the convective heat transfer to provide heat and cold, so the jacket will experience with hot steam for heating or cooling of the cooling water method. Improve the heat medium temperature can accelerate heating speed, shorten the drying time. For the viscous material, the heat medium temperature high prone to agglomeration phenomena. To reduce the temperature of the cooling water can accelerate the cooling speed, but also can shorten work period. With the material of a different nature, can choose the appropriate temperature, often preferred to variable temperature drying method, namely in the early period of drying temperature is low, gradually raising the temperature to increase the rate of drying.
To this point, it is recommended to use the temperature sensing element, the double cone rotary vacuum dryer jacket heat or cold control can change at runtime, and a menu to set the temperature for different time periods, which are the time temperature relationship set. Small, it should be segmented to control the vacuum pressure.
To this point, it is recommended to use the temperature sensing element, the double cone rotary vacuum dryer jacket heat or cold control can change at runtime, and a menu to set the temperature for different time periods, which are the time temperature relationship set. Small, it should be segmented to control the vacuum pressure.
Double cone rotary vacuum dryer cylinder stacking granular or powder materials, when the material pile inclined plane and the bottom angle increases to a certain point of time, will occur side material down phenomenon. This inclined plane and the angle of material at the bottom of the material called slip slide angle (slip angle and the material composition, moisture content, particle size and viscosity). The design and selection of the double cone rotary vacuum dryer, should choose the pyramidal angle according to the material's slip angle.
The actual loading volume and drying cylinder volume ratio of filling rate. Fill double cone rotary vacuum dryer rate is usually between 30%~50%, bulk density and the material is related to.
From the above, double cone rotary vacuum dryer cylinder cone angle is too big or too small will affect the mixing effect of drying surface turning, and the formation of the final effect of drying rate. Similarly, the actual loading volume filling ratio is too high will also affect the flip mixing effect, affecting the drying rate.
Rotating speed double cone rotary vacuum dryer cylinder drying speed faster, higher. But in the late stage of drying, with the decline in moisture content, drying rate also decreased, then increased speed on drying rate are useless. In addition, in the early period of drying, spinning 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.
To this point, it is recommended to use the frequency conversion 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.
Usually double cone rotary vacuum dryer with 1 × 103-1 × 104Pa vacuum, high vacuum degree, material moisture vaporization temperature is low, fast drying. But the high vacuum pumping gas system, will increase costs, material prices increased after drying, uneconomical. It is the value of the vacuum degree of cooling stage.
To this point, it is recommended to use a pressure sensing element, the double cone rotary vacuum dryer cylinder vacuum control can be changed at run time, and the menu can be set at different time by vacuum degree, which are vacuum time - set. |
