Hollow Blade Shaft Rotary Rake Paddle Dryer For Paste, Slurry,
Sludge, Powder, Fly Ash
Stainless Steel Fish Bone Meal Continuous Drying Hollow Paddle
Dryer Wedge Blade Dryer
Paddle dryer has been successfully used in food, chemical,
petrochemical, dyes, industrial sludge and other fields. Heat
transfer equipment, cooling, mixing characteristics makes it
possible to complete the following unit operations: The Burning
(low temperature), cooling, drying (solvent recovery), heating
(melting), response and sterilization.
Used to do medium heat blade dryer work to be completed by
low-temperature combustion. Such as: calcium sulfate dihydrate
(Ca2SO4 · 2H2O) combustion into calcium sulfate hemihydrate (Ca2SO4
· 1/22H2O). Sodium bicarbonate (NaHCO3) into calcined soda ash
(Na2HCO3) and so on.
Pass into the cooling medium, such as water, salt water, etc. Eg:
used in soda ash industry paddle cool base machine, replace the old
air-cooled cooler base machine, saving energy and exhaust gas
treatment equipment, reducing operating costs.
In need of recycling solvent, flammable oxidation sensitive
materials especially adapted. Has been widely used in fine
chemical, petrochemical, dye industry.
Axial interval, temperature, humidity, degree of mixing uniformity,
making the device used to heat or melt, or some solid material
reactions. In the fertilizer and modified starch industry have been
used successfully. Blade dryer can be used to sterilize food and
flour processing. Unit effective volume large heating area, will
soon be heated to sterilization temperature, avoiding prolonged
heating to change the quality of materials.
1. Introduction and application
Continuous hollow blade paddle dryer is applied to dry or cool
paste, particles, powdery materials, and slurry state materials. It
performs the process of drying, cooling, heating, sterilizing,
reacting and combustion under low temperature. The special
agitating and heat transferring blades achieve high heat transfer
efficiency and provide self-cleaning function.
2. Working Principle
Hollow chock shaped blades or wedge-shaped blades are concentrated
on the hollow shaft. Heating media flows through the blades from
the hollow shaft. The heat transfer area in the effective volume is
very high.
The temperature range of heating media is -40 ºC to 320 ºC. Heating
source could be steam, liquid state, such as steam, thermal oil
etc.
Indirect heating, there's no heat carried out by air. All heat is
utilized to dry the materials except the lost of heat insulation
layers. The surface of chock shaped blade has self-cleaning
function.
The relative movements of the product particles and the chocked
shaped blades surface might clean the materials attached to the
blades surface, so the heat transferring surface is clean during
working.
The shell of hollow blade paddle dryer is Ω shape. 2 or 4 pieces of
hollow stirring shaft are usually equipped in the shell. To avoid
any leakage of materials and dust, there're sealed terminal cover
and top cover with the shell. The heat transferring media flow
through the rotation connector, jacket's shell and hollow stirring
shaft.
The heat transfer medium passes through the rotary joint, through
the housing jacket and hollow shaft, the hollow mixing shaft in
accordance with the type of the heat media has a different internal
structure, to ensure optimum heat transfer effect.
3. Features
(1) Low energy consumption: No heat carried out by the air due to
indirect heat. There's no heat insulation layer with the exterior
wall of the dryer. It consumes 1.2kg steam to evaporate 1kg water
for drying slurry materials.
(2) Low cost of the blade dryer system: the unit effective volume
has a large heat transfer surface, so the processing time is
shorted, the size of the equipment becomes small. It greatly
reduces the floor area and building space.
(3) Handling wide range of materials: Heat sensitive material and
the materials to be processed under high temperature might be
processed with different heating media.
(4) Common media are: steam, thermal oil, hot water and cooling
water, etc.
(5) Continuous operation or intermittent batch operation, widely
used in many fields.
(6) Environmental pollution is less: Without any carrying air, very
few powder is carried out. Evaporation of the solvent material is
very small, easy to handle. For the materials that might cause
pollution or the solvent to be recovered, it might adopt sealed
circulation.
(7) Low operating cost: the structure.1 hour/day for the operator
is enough for normal operation. Low stirring speed and reasonable
structure makes a low maintenance cost.
(8) stable operation: the wedge-shaped blades will do special
compression, expansion of stirring effect, the material particles
will fullly contact with the heat transfer surface in the axial
section. The difference of the temperature, humidity and mixing
effect are very small in the different axial area, so to ensure the
stability of process.
(9) Low speed will not break the granular materials or sliced
materials.
Details
Technical specifications
| Item / Model | JYG3 | JYG9 | JYG13 | JYG18 | JYG29 | JYG41 | JYG52 | JYG68 | JYG81 | JYG95 | JYG110 |
| Heat transfer area(m2) | 3 | 9 | 13 | 18 | 29 | 41 | 52 | 68 | 81 | 95 | 110 |
| Effective volume(m3) | 0.06 | 0.32 | 0.59 | 1.09 | 1.85 | 2.8 | 3.96 | 5.21 | 6.43 | 8.07 | 9.46 |
| range of rotation(rmp) | 15-30 | 10-25 | 10-25 | 10-20 | 10-20 | 10-20 | 10-20 | 10-20 | 5-15 | 5-15 | 5-10 |
| power(kw) | 2.2 | 4 | 5.5 | 7.5 | 11 | 15 | 30 | 45 | 55 | 75 | 95 |
| Body widthA(mm) | 306 | 584 | 762 | 940 | 1118 | 1296 | 1476 | 1652 | 1828 | 2032 | 2210 |
| Total width B(mm) | 736 | 841 | 1066 | 1320 | 1474 | 1676 | 1854 | 2134 | 1186 | 2438 | 2668 |
| Body width C(mm) | 1956 | 2820 | 3048 | 3328 | 4114 | 4724 | 5258 | 5842 | 6020 | 6124 | 6122 |
| Total length D(mm) | 2972 | 4876 | 5486 | 5918 | 6808 | 7570 | 8306 | 9296 | 9678 | 9704 | 9880 |
| In and out material distance E(mm) | 1752 | 2540 | 2768 | 3048 | 3810 | 4420 | 4954 | 5384 | 5562 | 5664 | 5664 |
| Center height F(mm) | 380 | 380 | 534 | 610 | 762 | 915 | 1066 | 1220 | 1220 | 1220 | 1220 |
| Total height H(mm) | 762 | 838 | 1092 | 1270 | 1524 | 1778 | 2032 | 2362 | 2464 | 2566 | 2668 |
| Steam inlet N(寸) | 3/4 | 3/4 | 1 | 1 | 1 | 1 | 11/2 | 11/2 | 11/2 | 11/2 | 2 |
| Outlet O (inch) | 3/4 | 3/4 | 1 | 1 | 1 | 1 | 11/2 | 11/2 | 11/2 | 11/2 | 2 |
This vacuum drying equipment is applied to the pharmaceutical,
nourishment, food, chemical and other industries.
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