HVRD Series Horizontal Vacuum Rake Dryer For Paraformaldehyde Drying

HVRD Series Horizontal Vacuum Rake Dryer For Paraformaldehyde Drying

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

3.1 Compact structure,small occupied area.
3.2 High utilization of heat,low operation cost.
3.3 Wide adaptability of raw material,the drying degree is evenly.
3.4 Suitable for drying many kinds of raw meterials.

Product Application

-- The following materials are dried in pharmaceutical, food, chemical and other industries:

-- Suitable for paste, paste and powder materials.

-- Heat-sensitive materials requiring low temperature drying.

- -Easy to oxidize, explosive, strong stimulation, highly toxic materials.

- -Materials requiring recovery of organic solvents.

Product Working Principle

HVRD Vacuum Harrow Dryer is an innovation horizontal batch-type vacuum dryer improved on the basic of introduced technology of harrow dryer.
The moister of wet material will be evaporated by heat transmission. The stirrer with blade will remove material on hot surface and move in the container to form cycle flow .The evaporated moisture will be pumped 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

Product Flowchart

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Jiangsu Guojin Drying Technology Co.,Ltd. specializes in the research and development and manufacture of drying, mixing, granulating, crushing, conveying, screening and other equipment. It has now become a large-scale enterprise in the drying equipment industry and a designated production enterprise of China Chemical Equipment Corporation. Especially, it has unique advantages in mesh belt type, hollow blade, disc type, rake type, fluidized bed, flash evaporation, airflow, spray, vacuum drying equipment, calcination, etc. Widely used in chemical, pharmaceutical, food, environmental protection, building materials, electronics, feed and other industries. Tens of thousands of users are spread all over the country and sold to more than then countries.

The company is located in Sanhekou Development Zone, Tianning District, Changzhou City, the birthplace of China's drying equipment industry. It is adjacent to Beijing-Shanghai Expressway, Shanghai-Nanjing Railway and Hengshan Crossing of Shanghai-Nanjing Expressway, 5km away from Shanghai in the east, Wuxi and Suzhou in the south, and the Yangtze River in the north.

The company has complete processing equipment. There are several sets of manufacturing equipment such as lifting, welding and cutting. It has excellent product development environment and production environment. The company has adopted advanced management methods and established a perfect quality assurance system.

Our company has established a set of perfect after-sales service system, which tracks and monitors all ex-factory products and the users are satisfied. "work with great care and keep improving" is the company's requirement for emplyees. Facing the increasingly standardized domestic and foreign markets, the company adheres to the corporate philosophy of "open competition, cooperative innovation, balance of interests and common development" and faces up to challenges with the belief of winning.