ZPG-500 Vacuum Harrow Dryer
Equipment profile
Vacuum harrow dryer, mainly used for explosive, easy to oxidize,
paste material drying. Operating under high vacuum, the boiling
point of the solvent decreases and the air is isolated to avoid
oxidation and overheating deterioration during drying.
Applicable materials
The main structure of the rake vacuum dryer is a horizontal
cylinder container with a jacket, with a low speed mixing shaft and
a rake tooth arranged in a certain direction on the shaft. There
are two forms of mixing shaft, one is non-heating rake tooth shaft,
the other is hollow rake tooth shaft which can enter hot medium.
The jacket is filled with heating medium (hot water, hot oil,
steam). A quantitative wet material is added to the cylinder, and
the rake shaft agitates the material to make the material heat
evenly. Under the control of the time relay, the rake shaft runs
according to the requirements of a certain time interval. The
operation period is set by the user according to the process
operating conditions of the material. The dried material in the
cylinder is stirred regularly by the rake shaft until the material
is dried to the process requirements. A vibrating rod is installed
in the cylinder (determined by the drying characteristics of the
material). With the rotation of the rake tooth shaft, the vibrating
rod falls freely, and the dry material adhered to the shaft and the
cylinder wall by the self-weight of the vibrating rod is vibrated.
At the same time, it has the function of material. The upper part
of the inner cylinder is equipped with a vacuum interface, which is
connected to the vacuum system to make the dried material heated
and dried under negative pressure, which can ensure that the dried
material is heated at low temperature and does not destroy the
physicochemical properties of the material. After the material
reaches the drying requirement, open the discharge valve in the
lower part of the cylinder and let the material move to the middle
of the rake shaft.
Features:
1. Materials dry evenly, avoid oxidation, overheating can get very
low moisture content products without crushing operation can be
packaged.
2. Evaporation intensity is high, generally can evaporate 10-15 kg(
water)/ m2·h
3. No air intervention, condenser load is very small, easy to
recover material solvent.
4. Solvent steam entrainment is filtered by bag filter and removed
without environmental pollution.
5. Discharge mode is short neck ball valve, easy to discharge.
6. Hot medium can be steam, hot oil, hot water.
7. This equipment is equipped with double-end mechanical seal, with
better sealing performance.
Equipment parameters:
| Seriel# | Item | Parameter |
| 1 | Model | ZPG-500 |
| 2 | Volume | 500L |
| 3 | Coefficient | ～0.6 |
| 4 | Cylinder dimension | ɸ600*1500mm |
| 5 | Speed | 2～6rpm |
| 6 | Transmission power | 3kw |
| 7 | Vacuum degree | -0.095mpa |
| 8 | Working temperature | <50℃ |
