Patent equipment SR cylinder cone vacuum dryer Equipment overview
The materials of industrial products to be dried are varied, ranging from liquid with high water content to loose filter cakes with low water content, from highly heat-sensitive antibiotic biological products, pasty products to inorganic salt products that can withstand very high temperatures , From loose and non-adhesive products to strong agglomerated products, the scale of product drying treatment is very different, from tens of kilograms to hundreds of thousands of tons per day. The output of raw materials is generally not too large, but many of them are heat-sensitive, especially the products with high water content and strong viscosity of traditional Chinese medicine extracts. Many existing drying technologies and equipment, such as: disc hot air oven, double-cone vacuum dryer, spray drying, boiling drying, vacuum belt drying, etc., are all produced to meet the needs of a variety of properties and scales, but so far So far, there is no ideal drying equipment for traditional Chinese medicine extracts, strong viscous and agglomerated materials.
The patented equipment SR cylinder cone vacuum dryer is a new generation of stirring contact vacuum dryer developed by ZhangHua Machinery. It adopts advanced technology and can process materials such as wet powder, filter cake, paste and slurry, especially suitable for heavy and viscous materials. and products that are highly sensitive or contain toxic or explosive solvents. Our vacuum dryers are suitable for low vacuum operation and can also be applied to other stages of the process, including: reaction-crystallization-distillation-drying, heating-cooling, sterilization, liquid-solid separation and degassing. We now offer a wider range of vacuum drying systems for the process handling of more media materials in closed and controlled environments, from chemicals to metals and pharmaceuticals.
SR-Tube Cone Ribbon Belt Vacuum Dryer Process Flow
1. Stirring reaction
Add the material (solid-liquid, liquid-liquid or gas-liquid) that needs to be reacted from the feeding port on the top of the equipment, start the motor and reducer, and make the hollow shaft and the hollow ribbon rotate clockwise (looking down from the top). The unique stirring structure can make the materials fully stirred and fully reacted in the machine. If the materials are to be heated or cooled during the reaction, heat medium or refrigerant can be introduced into the cylinder and the cone jacket, as well as the hollow shaft and the hollow spiral belt. The heating or cooling medium can be continuously circulated to complete the heating or cooling of the material to meet the process conditions required for the reaction.
2. Pressure filtration or vacuum filtration
After the reaction is over, open the outlet of the lower filtrate, pass compressed air or nitrogen gas into the equipment, and filter the reacted solid-liquid mixture under pressure until the materials in the machine are dried. Vacuum can also be drawn at the outlet of the filtrate to vacuum filter the material until the filtrate is drained. When filtering, the hollow shaft and the hollow screw belt can be rotated clockwise (viewed from the top) to lift the material, and the hollow screw belt can limit the thickness of the filter cake layer when rotating, so that the material is in a thin filter cake Filter under layer conditions to increase the filtration rate.
For materials that are easy to filter, it is not necessary to stir when filtering, and the materials are directly filtered to dryness.
3. Can be washed and filtered many times
After some materials are filtered, they need to be washed several times. The reaction, filtration and drying multifunctional machine is an ideal equipment for repeated washing of materials.
After the material is pressed dry in the machine, the washing liquid can be added to the top washing liquid inlet, and then the filter cake is evenly repulped through the stirring of the hollow shaft and the hollow ribbon, and the material is pressed dry after the repulping is evenly stirred. If washing once is not enough, it can be washed several times. At this time, the above steps can be repeated many times. The operation is very convenient and the labor intensity is extremely low.
Washing materials in the above method is called batch washing method.
Since the material is pressed dry and then washed with washing liquid, although the valves are opened and closed a little more times during operation, less washing liquid is used. The machine can also continuously wash the materials, that is, continuously press the washing liquid with a pump or other methods, and use the pressure of the washing liquid to filter, while the hollow shaft and the hollow ribbon are continuously stirred, and the filtrate is continuously discharged from the filtrate outlet until Until the washing requirements are met, the filter cake is finally pressed dry. This continuous washing method generally uses more washing liquid than intermittent washing, but it is more convenient to operate.
4. Vacuum drying and discharging
The filter cake that is filtered or washed, filtered and dried remains in the machine. At this time, the heat medium is passed into the cylinder jacket, cone jacket, hollow shaft, and hollow screw belt to heat the material. At the same time, the hollow shaft and hollow screw The belt still rotates in a clockwise direction (looking down from the top) to lift the material up and stir it fully, while vacuuming is carried out on the top of the equipment to make the material dry in a vacuum-tight manner inside the machine. Since the hollow shaft and the hollow ribbon are heated from the inside in addition to the jacket heating, and the drying is carried out under vacuum conditions, the drying efficiency is very high.
After drying, open the quick-open discharge port at the lower part of the equipment, and make the hollow shaft and hollow ribbon rotate counterclockwise (looking down from the top), and the dried materials in the machine will be automatically pushed to the discharge port.
So far, the reaction, filtration, washing and drying processes of a batch of materials are completed.
SR-Tube Cone Ribbon Belt Vacuum Dryer Working Principle
The spiral-belt single-cone vacuum dryer adopts a barrel-cone structure. It is a high-efficiency, multi-functional fully enclosed vertical vacuum drying equipment that integrates vacuum distillation, crushing, powder mixing, and drying. The drying efficiency is the same as that of double-cone cones. 2 to 3 times that of rotary vacuum dryers and vacuum box dryers. Combined with the special drying process of ZhangHua machinery, it can adapt to the drying of materials with poor heat penetration, easy to roll balls, and easy to form lumps.
The patented equipment SR cylinder cone vacuum dryer has completely changed the shortcomings of large volume, high energy consumption, long working hours, low efficiency, loud noise, difficult packaging, difficult cleaning, and inconvenient maintenance. At present, it is a multi-purpose dryer with low power loss, high efficiency and good effect among similar equipment at home and abroad.
The working process of the patented equipment SR cone vacuum dryer is a batch operation. After the wet material enters the silo, it is dried by stirring and heating with the jacket and ribbon.
The high-vacuum design of this dryer has obvious advantages for drying temperature-sensitive products, and it has good heat conduction ability, fast drying, and at the same time, it has the characteristics of low energy consumption. The filter directly connected to the dryer can keep the dust particles in the processing area. The machine adopts a pneumatic sealing hemispherical valve, which can discharge materials thoroughly and conveniently. It has excellent vacuum, pressure-resistant sealing and other performances. Stable and long service life, so as to ensure continuous processing of products without loss.
Patent equipment SR barrel cone vacuum dryer Some cooperative customers