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1、 Working principle of vacuum drying oven:
1TheFZGThe series low-temperature vacuum drying oven is designed based on the principle of low boiling point temperature of water at low pressure, and is used for low-temperature drying of easily decomposed, polymerized, and thermosensitive materials at high temperatures. It quickly vaporizes and discharges the moisture in the dried water containing materials to achieve the purpose of drying. Compared with ordinary drying methods, it has the characteristics of fast drying speed, low pollution, and no damage to the inherent characteristics of the dried items. Therefore, this drying oven is widely used in industries such as medicine, food, light industry, chemical industry, electronics, aerospace, railway, etc.
2The low-temperature vacuum drying oven can be divided into cylindrical structure and box structure. The product has a beautiful and generous appearance, occupies a small area, and can fully utilize the effective space of the workshop. This series of vacuum drying ovens is a static oven.
3The box doors used in the electronics industry and large motor and transformer ovens adopt electric door lifting,PLCProgramming, automatic interlocking control, automatic entry and exit of workpieces, uniform heating, high stability.
2、 Structural characteristics of vacuum drying oven:
1The inner liner adopts304Stainless steel plates are welded and manufactured, finely polished, and the skeleton is welded in a cross shape using national standard channel steel.
2The inner liner adopts316LStainless steel plates are welded and manufactured, finely polished, and the skeleton is welded in a cross shape using national standard channel steel.
3The inner liner adopts304Stainless steel plate welding production, surface sprayed with polytetrafluoroethylene coating, can withstand strong corrosive media such as sulfuric acid, nitric acid, hydrochloric acid and other strong acids and alkalis.
4TheYZGThere is no need for skeleton reinforcement in the production of series vacuum drying ovens.
5The internal square corners and the middle of the top and bottom are made of circular arc corners, which makes the temperature inside the box smooth and uniform when heated, thus changing the defect of the original square vacuum oven where the top layer of the drying tray containing materials is not easy to dry. At the same time, it facilitates the water vapor droplets generated during material drying to flow into the bottom of the box along both sides and be discharged outside the box through the drain outlet.
3、 Heating methods for vacuum drying oven (steam heating, hot water heating, thermal oil heating, electric heating):
1Steam heating: All heating tubes are made of stainless steel coils for heating, and the material is:304The specification is ф51×3F38×3F22×3, coiled intoSShape direction, uniform heating, fast drying rate.
2Hot water heating: All heating tubes are made of stainless steel coil for heating, material:304The specification is ф51×3F38×3F22×3, coiled intoSShape direction, uniform heating, fast drying rate, hot water can be automatically supplied by a boiler or heated by a water tank and circulated by a hot water pump.
3The heat transfer oil heating tubes are all made of stainless steel coils for heating, and the material is:304The specification is ф51×3F38×3F22×3, coiled intoSShape direction, uniform heating, fast drying rate, thermal oil can be heated by an oil tank and circulated by a high-temperature resistant pump.
4Electric heating: used for car drying30×30×1.5Stainless steel tube welding, heating tube material is stainless steelWType production, evenly distributed on each layer, using intelligent temperature controller for temperature control, LCD digital display, small temperature flushing, high steady-state accuracy.
4、 Control method of vacuum drying oven:
1The large motor vacuum drying oven adopts an imported touch screen control system,PLCProgramming, interlocking operation between the upper and lower doors of the box and the electric roller, real-time display of voltage and usage status during the heating process using ammeters and voltmeters, control of electrical components using solid-state relays, power supply with phase sequence and missing items, leakage protection device, constant temperature timing control, temperature surge alarm, and audible and visual alarm notification at the end of program operation.
2The temperature control system of the ordinary vacuum drying oven adopts the Japanese conductive companySRSeries of intelligent temperature control instruments, this instrument
The control process has fast response, small overshoot, and high steady-state accuracy, achievingPIDSelf setting, automatic temperature control, automatic constant temperature, automatic heating, automatic control of the size and opening of the output valve, to avoid excessive heating power and power limitations on certain heating stages of special heating elements;
3The vacuum drying oven is equipped with one electric contact vacuum gauge and one check valve each. The electric contact vacuum gauge can achieve automatic control of the vacuum inside the oven, saving a lot of labor and reducing production costs. The check valve can more effectively prevent backflow. Equipment configuration mirror4It is convenient to observe the situation and process of drying the materials inside the box.
5、 Technical parameters:
name model
Box dimensions: width x depth x height （mm）
Overall dimensions Width x Depth x Height （mm）
interlayer distance mm
Number of baking dishes (Only)
真空度 （Mpa）
maximum temperature （℃）
vapor pressure （Mpa）
FZG-Non-standard type
600×550×600
960×750×1100
120
4
-0.1
According to different heating methods
room temperature-300
electric heating
FZG-5
850×1000×1000
1100×1100×1500
6layer/12
FZG-12
1160×1400×1000
1400×1720×1700
6layer/24
0.2-0.6
FZG-15
1160×1400×1250
1500×1700×1950
8layer/32
FZG-20
1500×1500×1450
1800×1820×2250
8layer/48
FZG-36
1500×2000×1450
1800×2250×2200
9layer/72
FZG-60
1500×2500×1750
1800×3000×2200
12layer/120
YZG-600
￠600×976
1135×810×1020
YZG-800
￠800×1247
1700×1045×1335
8
YZG-1000
￠1000×1527
1693×1190×1500
12
YZG-1400
￠1400×2045
2386×1675×1920
32
We can design and manufacture various non-standard vacuum dryers on site according to customer requirements, with dimensions for reference.
Successful operation!
