FZG Square Shape Vacuum Dryer

Vacuum Tray Dryers Description

FZG Series Square Shape Vacuum Dryer uses vacuum pump to damp air out from the interior of machine and make the working chamber form vacuum status. and let the raw material to be dried at vacuum condition ,Therefore, the drying speed of raw material is improved and the energy is saved greatly. Because the raw materials load inside the tray (standard tray size :640x460x45mm,it also can design nonstandard machine), so It is static vacuum drying machine, the form and structure of material can't be damaged when be dried. About the heating way of dryer, it can use hot water, steam or conduct oil. The exact heating way will be determined by client workshop heat source situation. because the interior of machine is vacuum state. The temperature control is not accurate if testing the vacuum air temperature. So we have two way to dissolve this issue. It can use soft cable temperature sensor to test the materials temperature or client adjust the heat source temperature.

Notes: If the material contains a large amount of solvents such as methanol, ethanol, etc. The solvent of raw material can be collected by using a condenser. But the condenser to recollected the solvent that need user to supply cooling water, If the solvent is water or low proportion of solvents , the condenser is not required in order to save investment cost.

Square Shape Vacuum Drier specifications

Square Shape Vacuum Dryers rack

The drying rack of the tray dryer use to load the the baking tray; this drying rack not only holds the tray and also transfers heat directly to the baking tray of tray vacuum dryer. The interior of the rack is hollow; and the steam or hot water pass through the rack and transfers heat to the tray.Hywell machinery vacuum tray dryer have two types racks. one is a round tube type and the other is a plate type rack.

Round pipe drying rack

 The round model drying rack is made of seamless steel pipe; and the steam or hot water pass through the round pipe and transfer the heat to the drying tray and the interior of the whole vacuum drying machine to dry the material.

Because the round tube drying rack is composed of some seamless steel pipes, there is a distance of 5-10 cm between each round tube, so when the baking tray is placed on the drying rack. The place of touches the baking pan that dry significantly faster than the place where it is not grounded. Some special materials cannot accept this kind of not uniform drying. Hywell machinery's engineers designed the cheapest solution for this issue. it use an independent baking tray support frame that put on the drying rack, and separate the baking tray to directly contact the round tube.the support frame use to solve the not uniform drying .

Plate type rack

The new type of drying rack has a flat surface and automatic constant temperature, which ensures that the materials in the baking tray are heated evenly. The drying rack is composed of heating plates, pillars and imported silicone tubes, with beautiful appearance and easy maintenance. The hot water or steam pass through the inside of the rack to transfer heat. Because the outer area of the plate drying rack is much larger than the round tube rack, the heat transfer rate is also much higher than the round tube rack. and the plate drying rack is very flat, so it is directly and completely in contact with the drying tray, which speeds up the transfer heat to the area, and the overall plate drying rack is more efficient than the round tube drying rack and has a faster drying speed. But the price of the plate rack is higher.

Heating method of vacuum dryer oven

For the heating method of the tray vacuum dryer, it can use the steam or hot water or heat transfer oil as heat source. However, the above heat sources cannot be provided by end user. Hywell machine can provide electric heating heat transfer oil furnace or electric heating hot water tank. Specific can be designed according to customers.