Metal sheet drying oven for can making
The oven is mainly used to dry the coating on the tin (or aluminum) sheet in the can making process. The entire line mainly consists of conveying, feeding devices, drying, cooling, and material collection and stacking.
Technical parameters of oven:
Applicable to metal sheet specifications |
Maximum |
1000×1250(mm) |
Minimum |
510×710(mm) |
|
Steel plate thickness |
0.14-0.50(mm)tin plate 0.17-0.50(mm)aluminum plate |
|
Sheet shape |
rectangular or corrugated iron |
|
Maximum weight |
2.6kg |
|
Maximum drying temperature |
230°C士2°C |
|
Standard drying temperature |
160-210°C |
|
Maximum production speed |
The total drying time corresponding to the running speed of 24M/2C drying room is 3,100 pieces/hour @10. Minutes |
|
The total drying time corresponding to the running speed of 30M/2C drying room is 4,500 pieces/hour @10. Minutes |
||
The total drying time corresponding to the running speed of 36M/3C drying room is 6,000 pieces/hour @10. Minutes |
||
The total drying time corresponding to the running speed of 39M/3C drving room is 6,700 pieces/hour @10. Minutes |
||
Maximum solvent volatilization |
72Kg/h |
|
Fuel type |
natural gas/LPG |
|
Number of heating systems |
2-3 sets |
|
Maximum consumption |
100m3/h |
Advantages of PLM new oven
Description of drying oven panel
1. The U-shaped inlaid wall panel link is adopted to eliminate the heat loss
of high temperature wind running out in the oven
2. The broken heat treatment process of inner wall plate and diameter plate
reduces the heat transfer coefficient of steel plate
3. The normal temperature of the outer body of the oven is + 5℃
Description of drying oven front exhaust
1. According to the EU EN1539 standard, the maximum amount of exhaust solvent
control is 10 g/m3.
2. Set the pressure sensor in the solvent volatile area, and automatically
adjust the exhaust air volume according to the change of gas concentration, so
as to reduce the loss of hot air on the premise of ensuring the minimum safe air
volume.
3. Suppose that the solvent emitting the gas is 45kg / h, and the exhaust
volume = 45/0.01=4500Nm3/h
4. Under the maximum solvent capacity of 75kg / h, the installed air volume
is automatically adjusted by 50008000 N m3/h.
Description of drying oven wicket
According to the specifications of the printed and coated products, a large number of C-shaped buckles and rollers (made of specialized food grade imported materials) are installed on the inner bracket and edge ears of the furnace frame, allowing the sheet (aluminum plate) to dry and run in a separate state from the furnace frame, effectively avoiding the problem of dot shaped scratches and burns in the printed and coated products.
1.LONGLI patent ¢ 10*2 tubular wicket with strong rigidity, high flatness,
light weight.
2. The two sides of the upper ear are changed to realize the suspension of
the coating products on the stove rack and reduce the chance of abrasion and
scald
3. Total weight of 36M oven rack: 1.68kg / 3650 =6132kg.
4. 20—200℃ Thermal energy consumption under drying conditions: 15 m3/h
(natural gas)
Description of drying oven heating room
1 Use the organized oxygen gas in the coating room to supplement to the two
combustion chambers 1500 Nm 32500 N m3/h to do fresh air supply to ensure the
oxygen content of the drying furnace.
2. Improve the working environment of the machine room and reduce the
expensive waste gas treatment cost:
3. The solvent in the gas also uses the fuel in the incineration cavity to
save the amount of gas.
4. Adopt internal standard 30:1 burner temperature control accuracy ± 1℃,
energy saving.
5. The circulating fan is controlled by frequency conversion control, and the
air volume is adjusted according to the product process requirements to save the
operating power of 8.2 kW / h:
Description of drying oven chain, the track
Chain and track are the key components of high-speed operation, and its
quality requirements determine the technical content of the oven operation.
Longli has completed this technical breakthrough after 2 years of technical
development
1. The oven special chain developed by LONGLI basically reaches the LTG
quality standard with high-speed operating conditions of 7000 pieces / h after
fatigue test.
2. Long service life of the chain and reduce the maintenance cost.
3. Moderate frequency quenching of rail surface, hardness HRC: 55℃, depth of
5mm.
4. Long service life of track and reduce maintenance cost.
Description of drying oven servo feeder
1. The configuration of high-precision rotation mechanism and material
treatment process is the basic condition for high-speed operation, and meets the
continuous operation condition of 7200 pieces / h.
2. Adopt vacuum adsorption positioning transportation, servo using the
international first-class brand to reach 150 times / minute, iron plate
positioning accuracy, stable operation, basically eliminate the probability of
abrasion.
3. The oven feed conveying adopts the hollow circular belt conveying
structure
Description of drying oven wicket
1. The steelness and flatness of the wicket are the key components of more
than 100 pieces / minute. LONGLI wicket has been confirmed by practical use in
this field
2. The resistance strength of the furnace is 470 Mpa
3. Electroplating adopts three nickel and one chromium process, coating
thickness 16um and potential difference 120MA
The chain lubrication station
PLM-oven chain oil injection lubrication system-composition introduction
Operational principle:
The oil injection system is automatically controlled by PLC. When the flower
rack sprocket rotates one tooth, the sensor will transmit the signal to the PLC,
give the signal to the oil injection machine solenoid valve through the PLC
feedback signal, and automatically lubricate the flower rack chain through the
action of the solenoid valve.
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