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The works of the vacuum dryer

Continuous type vacuum dryer
Freeze-drying to dry a technology is to use the principle of sublimation, will be dry

The material at low temperatures, fast frozen, and then in a vacuum environment, so that the freezing of water

Molecules directly sublimated into vapor escape. Freeze-drying the product is called frozen

Dry matter (lyophilizer), the process known as freeze-dried (lyophilization).
Material before drying, remains low temperatures (frozen), ice crystals evenly distributed in the material

Due to dehydration, a process called sublimation does not occur enrichment phenomenon to avoid vapor bubbles

, Oxidation and other side effects. The dry material was dry sponge porous volume is essentially the same, easily

Soluble in water and restitution. The maximum extent possible to prevent the physical, chemical and biological side of the dry material

The degeneration of the surface.
The import and export of both heat carrier in the layers of heating coil tube, generally the upper layers of low-pressure saturated

And steam or hot water, hot oil, in series, parallel or series-parallel input heating control layers of temperature

; While at the bottom of the second floor into the cooling water, in order to reduce the product temperature, heat recovery, to ensure quality

. Heating plate at a certain spacing fixed to the cylinder frame, showing the level of placement, during which each layer

Are equipped with the cross arm, upper and lower levels of dislocation 45 ° staggered fixed on the center spindle by

Worm gear reducer, the continuously variable transmission and motor drive slowly to 0.6 ~ 3.7 (r / min.)

Rotation. Support each boom tops have removable plow-shaped rake leaves or flat scraper was equidistant

Order. Rake leaves articulated and reed swing structure, so that the bottom edge of the disk with dual floating

And can be adjusted according to the material traits angle of rake leaves to ensure that the material in the disk constantly.

To move forward.
Dry material from the top of the disc feeder continuously added to the top of the device of the first layer of the small plus

The inner disk on the hot plate, under the mechanical action of the rotary rake leaves, while tumbling mixing,

Edge from the inside out constantly move forward, the sawtooth-shaped covered the entire disk of the engagement of

Hot and dry; material from the outer edge of the drop to the outer disk of the second layer below the heating coil,

Rake leaves under the action of reverse-mount, from sequential moved the outside edge to fall to the third layer

Heating coil on the inner disk. And so on, so that the material layer by layer from top to bottom

To drill moving, continuous heating and drying.
Evaporation of moisture and equipment exhaust mixing from the upper outlet of the natural discharge, the final dry material down

The footwall, rake leaves blew into a continuous discharge of the bottom discharge port, access to qualified dry finished

. Based on product performance, the size of the drying requirements and processing capacity, plate dryer with the spindle

Variable speed, manually adjust the disc feeder adjustment sets a high degree of control layers of the heating plate temperature

Distribution, the final cooling down a series of measures to play the superiority of the plate dryer

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Vacuum Dryer – mechanical use
Microwave Vacuum Dryer
Vacuum drying equipment by a refrigeration system, vacuum system, heating system, electrical instrumentation

Control system. The main components of the oven, condenser, cooling unit, vacuum pump

Heating / cooling devices. It works to dry items first freeze to the three-phase

Point below the temperature, and then under vacuum so that the items in the solid water (ice) directly l

Chinese water vapor, to exclude from the articles to make dry goods. Materials are pre-treatment and was sent to

Into the frozen positions frozen, and then into the sublimation of dry container, followed by post-processing workshop packaging.

Vacuum lyophilization positions to establish the conditions of low pressure, the sublimation of the heating system to provide material

Latent heat, refrigeration system to provide the required cooling capacity to the cold trap and drying room.
Devices using efficient radiant heating, the material is heated evenly; efficient capture water-cooled trap

, And can achieve rapid defrosting; efficient vacuum unit, and can realize the oil-water separator; mining

Centralized refrigeration system using the parallel, multi-channel on-demand cooling, stable working conditions conducive to energy conservation;

Artificial intelligence, control, control of high precision, easy to operate. The quality requirements of the freeze-dried products

: Biological activity of the same, uniform appearance and color, shape and full, firm structure, the dissolution rate

Fast, low residual moisture. To obtain high-quality products, due to the theory and technology of the freeze-dried

A more comprehensive understanding.
The freeze-dried vacuum drying process, including pre-freezing, sublimation, and then freeze-dried three phased. Close

Management and effectively shorten the cycle of freeze-dried in industrial production has obvious economic value. True

The air dryer pass into thermal energy (hot water, low pressure steam or hot oil) in a sealed sandwich

Shell, the heat within the pass was dry materials. Under driving of power, the tank slowly rotating,

The tank material constantly mixed so as to achieve the purpose of reinforced drying. Material in a vacuum-like

State, atmospheric pressure drops to the material surface of the water (solvent) to reach saturation, evaporation, and

Timely discharge from the vacuum pump.
Materials within the water (solvent) continue to penetrate to the surface, evaporation, discharge, three

The process is ongoing, the material in a very short period of time to achieve the purpose of drying. Equipment mainly consists of cylinder and

Heating plate of the frame, the size of the hollow spindle, the cross arm and rake leaves, disc feeding device, cutting

Disk and export of finished products, exhaust gas export, import and export of heat carrier tube to view the door, worm gear reducer

Continuously variable transmission and motor. Main components of the device is hollow heating plate, hollow

Ministry of welded baffle bulkhead to strengthen, both to increase the stiffness and strength, but also improves the heat transfer effect play

Advantages of conduction of high utilization of dry heat.