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[China]
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Address: No 12, Zhongjiang Village, Sanhekou Development Zone, Zhenglu Town, Tianning District, Changzhou City, Jiangsu Province, China
Contact name:Vicky
JIANGSU GUOJIN DRYING TECHNOLOGY CO., LTD |
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Rotary Rake Harrow Vacuum Paddle Dryer Suitable For Liquid Form Materials
vacuum rake dryer is a new type drying machine ,which is designed
with the combination of oar blade dryer heat drying principle, with
a higher drying efficiency, for a variety of raw materials.
The inner equipped oar blade and screw with continuous ,axial and
radial mixing of raw materials ,make the materials to be dried more
evenly.With applied both oar blade and screw, when the raw
materials were turned over by mixing blades, they speed up the
materials contact with heating surface of the dryer,so heat
transfer rate is increased,and is conducive to moisture
evaporation.
Product Structure
2.1 The loading cylinder of raw materials will be equipped with
heating jacket,and heat insulation layer will be equipped outside
the jacket,which will prevent the heat be transferred ,and also
reduce the heat loss. Discharge hole is equipped with the lower
part of the cylinder, on the top of the cylinder with two feeding
holes and an air exhaust outlet.When feeding,the raw materials
should be fed equally from the two feeding holes,the best feeding
capacity is about 60%-80% of the volume of the cylinder,the max
feeding capacity should not exceed 80%,otherwise will affect the
smooth discharge of gas evaporation .When the sticky raw material
is feeding,the feeding capacity should be reduced, to prevent the
drive motor overloaded, damage to equipment.
2.2 Hollow shaft is set inside the center of of the cylinder,in
heating medium will be put into the shaft( like hot conduction oil
or hot water).
2.3 On the hollow shaft distributed with oar blades with certain
angle,the oar blades are also hollow within heating
transferred,inlet and outlet of hot oil conduction are equipped
inside of the blades,to ensure the heat transfer efficiency during
the drying
2.4 Seals: Packing seals are equipped during shaft and cylinder.
2.5 Transmission:Except the special models,we normally apply the
chain or gear transmission style.Pivot bear apply duplex bearing
combination ,with tapered roller bearing and deep groove ball
bearing combined,to meeting the requirements of radial and axial
force.
Product Structure Features
The dryer is simple to operate, easy control the material, greatly reducing the labor intensity of workers, also reduce the material pollution in the drying process at the same time.
1. The reducer: the reducer installed in the right side of the machine. The motor was driven by the pulley and the V-belt to the gear unit, the spindle rotation to the rake teeth, and finally the cylinder rotated and get speed of 6~ 10 r / min.
2. The motor base device: The motor was mounted on the right side of the activity board, can be adjusted up and down, so that the V-belt tight fit.
3. Electrical control device (EU standard): All the electrical control, buttons, lights are installed in the control box, the operation can be controlled based on the panel text instructions. The positive and the reversing rotating direction of the stirring shaft can be adjusted according to the characteristics of the material. Generally, it can be controlled in about 5 minutes (ie, after stopping for 5 minutes, then reversing for 5 minutes).
4.Vacuum tube: Used to extract the cylinder evaporation’s solvent (or water) . In the inlet side with a filter,should be covered with filter cloth to prevent the material out.
5. Sealed structure: The spindle at both ends are sealed with PTFE , sealed in a vacuum to achieve a good sealing effect.
6.The mixing shaft with stainless steel thick-walled tube, rake arm rake teeth are made of stainless steel seamless stainless steel plate. Rake board was PTFE plated, scraping the sticky material.
Product Application
1. Drying for below materials in pharmaceutical, food and chemical industry etc.
2. Suitable for thick liquid form, paste, powdery materials.
3. Temperature sensing materials requiring low temperature drying.
4. Explosive, strong stimulating, extremely poisonous substance, material that easy to oxidize.
5. Demand to retrieve the materials of the organic solvent.
Product Working Principle
HVRD Vacuum Harrow Dryer is a new type of intermittent vacuum drying equipment, wet material by conduction evaporation, with scraper agitator will remove material on hot surface, and move in the container to form a circulation flow of water evaporation by vacuum pump.
Technical Parameters
| Item | type | ||||||||
| Name(unit) | HVRD-500 | HVRD-750 | HVRD-1000 | HVRD-1500 | HVRD-2000 | HVRD-3000 | HVRD-5000 | HVRD-8000 | HVRD-10000 |
| Working volume(L) | 300 | 450 | 600 | 900 | 1200 | 1800 | 3000 | 4800 | 6000 |
| Size in the cylinder(mm) | Ø600x1500 | Ø800x1500 | Ø800x2000 | Ø1000x2000 | Ø1000x2600 | Ø1200x2600 | Ø1400x3400 | Ø1600x4500 | Ø1800x4500 |
| Stirring revolution(rpm) | 10-15 | 10 | 8-10 | 5 | 5 | 5 | |||
| Power(kw) | 3 | 4 | 5.5 | 5.5 | 7.5 | 11 | 15 | 22 | 30 |
| Design pressure of jacket(Mpa) | <0.3 | ||||||||
| Pressure in the cylinder(Mpa) | -0.09~-0.096 | ||||||||
| Heat transfer area(m2) | 2.4+1 | 3.2+1.2 | 4.5+1.5 | 5.6+1.8 | 7.5+2.2 | 9+2.5 | 14+3.5 | 21.6+5.5 | 24.3+5.5 |
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