Product introduction
Disc continuous dryer is an efficient conductive continuous drying equipment. Its unique structure and working principle determine that it has the characteristics of high thermal efficiency, low energy consumption, small occupation area, simple configuration, convenient operation and control, and good operating environment. It is suitable for drying operations in chemical, pharmaceutical, pesticide, food, feed, agricultural and sideline products processing industries. It is well received in the use practice of various industries. At present, we are producing four types: atmospheric pressure, airtight and vacuum, 1200, 1500, 2200 and 3000, A (carbon steel), B (stainless steel in contact with materials), C (on the basis of B, adding stainless steel for steam pipeline, spindle and support, and stainless steel for cylinder body and cover top lining). Three kinds of materials, drying area 4-180 m2, a total of several hundred types of products, and can provide a variety of auxiliary equipment to meet the needs of users for drying various materials.
Working principle
The wet material self-feeder is continuously added to the first layer drying plate on the upper part of the dryer. The rake arm with rake blade rotates to make the rake arm rotate to make the rake blade turn over the material continuously. Material flows through the surface of the drying tray along the exponential helix. Material on the small drying tray is transferred to the outer edge and falls to the outer edge of the large drying tray below. Material on the large drying tray moves inward and falls from the middle outlet into the following small drying tray. The size of the drying tray is arranged alternately up and down, so that the material can flow continuously through the whole dryer. A heating medium is introduced into the hollow drying plate, which is in the form of saturated steam, hot water and heat conducting oil. The heating medium enters from one end of the drying plate and is derived from the other end. The dried material falls from the last drying tray to the bottom of the shell, and is eventually transferred to the discharging port by the rake blade. The moisture escapes from the material and is discharged from the dehumidifier set on the top cover. The moisture of the vacuum disk dryer is discharged from the vacuum pump set on the top cover. Dry materials discharged from the bottom can be packed directly. By adding fin heater, solvent recovery condenser, bag filter, dry material back mixing mechanism, induced draft fan and other auxiliary machines, the drying capacity can be improved, paste and heat sensitive materials can be dried, solvents can be easily recovered, and pyrolysis and reaction operations can be carried out.
Performance characteristics
(一)Easy regulation and strong applicability
◎The drying process can be achieved by adjusting the thickness of material layer, spindle speed, number of rake arms, type and size of rake blades.
◎Each layer of drying tray can be heated or cooled separately by feeding hot or cold media. The material temperature control is accurate and easy.
◎The residence time of materials can be adjusted accurately.
◎Material flow direction is single, no backmixing phenomenon, uniform drying, stable quality, no need to mix again.
(二)Easy to operate
◎The operation of starting and stopping the dryer is very simple.
◎After stopping feeding, the conveying material dirt rake leaf can quickly empty the material in the dryer.
◎Through the special large inspection door mirror, the equipment can be very carefully cleaned and observed.
(三)Low energy consumption
◎The material layer is very thin, the spindle speed is low, the power required by the material transmission system is small, and the power consumption is low.
◎Drying by conductive heat has high thermal efficiency and low energy consumption.
(四)Good operating environment, recoverable solvents, dust emissions meet the requirements
◎Atmospheric pressure type: Because of the low air velocity in the equipment and the high and low humidity distribution in the equipment, it is difficult for dust to float to the top of the equipment, so the exhaust gas from the top dehumidifier contains almost no dust.
◎Closed type: Equipped with solvent recovery device, it can easily recover organic solvents in humid gas. Solvent recovery device is simple and the recovery rate is high. For flammable, explosive, toxic and oxidizable materials, nitrogen can be used as a wet gas for closed-circuit circulation to make it safe to operate. It is especially suitable for drying flammable, explosive and toxic materials.
◎Vacuum type: Disk dryer operated in vacuum, especially suitable for drying heat sensitive materials.
(五)Easy to install and occupy small area
◎The dryer is manufactured as a whole and transported as a whole. It only needs to be hoisted and positioned, so it is very easy to install and locate.
◎Because of the drying plate layout and vertical installation, the drying area is large and occupies a small area.
Material adaptation
Dry pyrolysis combustion cooling reaction sublimation
◎Organic chemical products◎ Inorganic chemical products◎ Medicine and Food◎ Feed and fertilizer
Technical characteristics
(一)Drying plate
◎Design pressure: generally 0.4 MPa, up to 1.6 MPa.
◎Maximum operating pressure: generally less than 0.4 MPa, up to 1.6 MPa.
◎Heating medium: steam, hot water, heat conducting oil and drying plate are heated by hot water at 100 C, saturated water vapor or superheated steam at 100 C to 150 C, saturated water vapor at 150 C to 320 C, electric, heat conducting oil and molten salt at over 320 C.
(二)Material Transfer System
◎Spindle speed: 1-10 rpm, electromagnetism or frequency conversion speed.
◎Rake arm: There are 2 to 8 rake arms fixed on the main shaft on each layer of drying plate.
◎Rake blade: It is twisted on the rake arm and can keep in touch with the float of the disk. It has many forms.
◎Rolling: For materials that are easy to be caked and need to be crushed, the heat transfer and drying process can be strengthened by adding rolling in appropriate places.
(三)There are three types of shell: atmospheric pressure, airtight and vacuum.
◎Atmospheric pressure type: cylinder or octagonal prism type, there are two kinds of structure: integral and opposite. The main pipe for heating medium inlet and outlet can be inside or outside the shell.
◎Closed type: cylindrical shell, can withstand 5 Kpa internal pressure, heating medium inlet and outlet main pipe can be in the shell, can also be outside the shell.
◎Vacuum type: cylindrical shell, design pressure is 0.1 Mpa, the main pipe of heating medium inlet and outlet is in the shell.
(四)Air heater
Generally, it is used in the case of large evaporation to enhance drying efficiency.
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Specifications
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external diameter mm
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height mm
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Dry area m2
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power Kw
|
|
1200/4
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Φ1850
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2718
|
3.3
|
1
|
|
1200/6
|
3138
|
4.9
|
|
1200/8
|
3558
|
6.6
|
1.5
|
|
1200/10
|
3978
|
8.2
|
|
1200/12
|
4398
|
9.9
|
2.2
|
|
1500/6
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Φ2100
|
3022
|
8.0
|
|
1500/8
|
3442
|
10.7
|
|
1500/10
|
3862
|
13.4
|
|
1500/12
|
4282
|
16.1
|
3.0
|
|
1500/14
|
4702
|
18.8
|
|
1500/16
|
5122
|
21.5
|
|
2200/6
|
Φ2900
|
3319
|
18.5
|
|
2200/8
|
3739
|
24.6
|
|
2200/10
|
4159
|
30.8
|
4.0
|
|
2200/12
|
4579
|
36.9
|
|
2200/14
|
4999
|
43.1
|
5.5
|
|
2200/16
|
5419
|
49.3
|
|
2200/18
|
5839
|
55.4
|
7.5
|
|
2200/20
|
6259
|
61.6
|
|
2200/22
|
6679
|
67.7
|
11
|
|
2200/24
|
7099
|
73.9
|
|
2200/26
|
7519
|
80.0
|
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Specifications
|
external diameter mm
|
height mm
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Dry area m2
|
power Kw
|
|
2500/6
|
Φ3150
|
3319
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26.3
|
4
|
|
2500/8
|
3739
|
35
|
|
2500/10
|
4159
|
43.8
|
5.5
|
|
2500/12
|
4579
|
52.5
|
|
2500/14
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4999
|
61.3
|
7.5
|
|
2500/16
|
5419
|
70
|
|
2500/18
|
5839
|
78.8
|
11
|
|
2500/20
|
6259
|
87.5
|
|
2500/22
|
6679
|
96.3
|
|
2500/24
|
7099
|
105
|
13
|
|
2500/26
|
7519
|
113.8
|
|
3000/8
|
Φ3800
|
4050
|
48
|
11
|
|
3000/10
|
4650
|
60
|
|
3000/12
|
5250
|
72
|
|
3000/14
|
5850
|
84
|
|
3000/16
|
6450
|
96
|
|
3000/18
|
7050
|
108
|
13
|
|
3000/20
|
7650
|
120
|
|
3000/22
|
8250
|
132
|
|
3000/24
|
8850
|
144
|
|
3000/26
|
9450
|
156
|
15
|
|
3000/28
|
10050
|
168
|
