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Mobile grain dryers

Mobile grain dryers with batch operation mode are aimed for small and medium-sized agricultural farms. They are equipped with relatively small charging hopper (15-25 tons). Drying process is characterized by a continuous grain circulation. The next step after reaching the appropriate charging parameters, is a process of cooling and afterwards - discharging dry material from dryer.

Main advantages of POLnet mobile grain dryers

szuszarnie-do-zboz
  • Main worm is located outside the bin: it provides easy grain rotation inside the silo, simple revision access, and automatic grain cooling
  • Controlled exhaust emissions - NO grain polution thanks to the patented heat exchanger
  • Whole construction and all mechanical parts are made of high-quality materials
  • Hydraulically lifted charging bin
  • Bifunctional drive (PTO, electric engine)
  • Central worm hydraulically disassembled
  • Low fuel consumption and low noise level
  • Alternative fuels can be used
  • Rotating grain eptying


Grain dryer equipment

kosz i ślimak
Bin and worm hydraulically disassembled
Ślimak centralny
Main worm outside the silo
kosz załadowczy
Charging hopper 2400 x 1500 mm
(as an option)
urządzenie do czyszczenia

ASP. Cleaning device
Provides removing the impurities from cereals
 

sciany suszarni
Silo's walls and nuts are made of stainless steel

precyzyjne instrunenty elektoniczne
Precise electronic instruments
guarantee safe and reliable operation 
palnik gazowy
Gas/ biogas burner is characterized by very low emission. High-quality of grain (even organic) is guaranteed. 
wymiennik ciepła
Heat exchanger allows to dry the grain
with a use of clean air.
 
silnik elektyczny
Quiet dryers: operation with electric engine  for the effective noise reduction.
palnik oleju napędowego
 
Diesel oil burner
miernik wilgotności zbóz
Grain humidity meter
tryb-asp-odkurzacz-generator
ASP mode: vacuum cleaner + generator
Rozszerzenia do rozładunku silosów
Extentions for unloading the silo
Kosz załadowczy
Charging bin
grawitacyjny system czyszcenia ziarna
Gravitational grain cleaning system
okienko rewizyjne
Inspection window for burner's flame
otwór do poberania próbek
Opening for taking the samples
Poziomica
Level line
okienko rewizyjne ślimaka
Inspection window for worm
okablowanie  


Scheme of grain dryer operation

schemat działania suszarni
 

BATCH DRYING

Drying at mobile grain dryers is carried out in BATCH operation mode. Dryer's chamber is being charged from charging bin and afterward is constantly moving thanks to vertical conveying worm.

Warm air at temperature 40 -1400C, generated by burner (can be powered by gas or oil)  dries the grain. Constantly moving grain doesn't burn and keeps constant humidity precentage.

When grain achieves designated humidity level, burner is automatically switched off and colling process begins. When cooling process is finished, dryer switches off automatically.

Thanks to dual-nozzle burners, our grain dryers enable to keep optimum drying temperature, and prevent from crystallization of grain.
It allows to 
operate at a maximum cost-effective way.

In addition, conveying worms construction prevent from grain damage at its constant circulation in dryer.

Grain drying process

Step 1 - Configuration and initial cleaning

  • Prepare the device according to established procedure
  • Grain should be the cleanest possible (using the grain cleaner)

Step 2 - Loading

  • Conveying worm operation with using electric panel
  • Product is being transported from drying silo by vertical conveying worm
  • Burner and mixer are switched off
  • Loading time: 18 - 20 min

Step 3 - Drying (with direct / indirect flame)

  • Opening the diaphragm of the second circulation (according to manual)
  • Launching the mixer
  • Launching the burner, when the device is in motion

Step 4 - Cooling

  • Necessary before storing the grain
  • It works in the same way as drying process ( grain is constantly moving) , but without burner

Step 5 – Unloading

  • Turn the outlet pipe to enable the unloadin

Technical data

dane techniczne suszarnie mobilne

Type PRT75/M
PRT75/ME
PRT120/M
PRT120/ME
PRT200/M
PRT200/ME
PRT250/M
PRT250/ME
PRT250/FE
Storage capacity (m3)
10
15
25
31
33
Power absorbed by PTO (KM)
30
60
80
90
-
Power (kW) types ME & FE
15,4
22
37
47,2
46
Fan's capacity (m3/h)
11.000
28.000
40.000
53.000
53.000
Maximum heating power (kcal/h)
330.000
600.000
900.000
900.000
900.000
Diameter of holes on silo's wall (mm)
1,5-2,5
1,5-2,5
1,5-2,5
1,5-2,5
1,5-2,5
Weight (kg) Type M
1.950
3.500
4.300
4.800
4.500
Weight (kg) Type ME
2.150
3.680
4.600
5.100
4.500
Weight with exchanger(kg) Type M
2.270
3.920
4.900
5.400
5.110
Weight with exchanger(kg) Type ME
2.470
4.100
5.200
5.700
5.110
Cpacity of fuel tank (1)
250
380
580
580
580

Capacity (tons/24h)

Grain Wilgotność PRT75/M
PRT75/ME
PRT120/M
PRT120/ME
PRT200/M
PRT200/ME
PRT250/M
PRT250/ME
PRT250/FE
Corn 30% -14%
38
56
94
116
120
Wheat, barley 20%-14%
53
80
132
164
170
Rise 20%-14%
22
36
60
75
86
Soy 20%-14%
36
60
100
125
135
Rape 15%-10%
33
50
83
106
120
Sunflower 14%-7%
31
48
80
100
115
  PRT75/M
PRT75/ME
PRT120/M
PRT120/ME
PRT200/M
PRT200/ME
PRT250/M
PRT250/ME
PRT250/FE
Humidity extraction from corn  (%/h) 3,8-6 3,8-6 3,8-6 3,8-6 3,8-6
Humidity extraction from rise (%/h) 1,7-2,5 1,7-2,5 1,7-2,5 1,7-2,5 1,7 - 2,5

Dimensions

Types PRT75/M
PRT75/ME
PRT120/M
PRT120/ME
PRT200/M
PRT200/ME
PRT250/M
PRT250/ME
PRT250/FE
T.I.R. Loading dimensions (cm)
455x226x246
510x247x257
630x247x260
630x247x260
575x250x257
A (cm)
226
247
300
300
300
B (cm)
396
412
435
533
674
C (cm)
525
588
676
676
575
D (cm)
510
628
699
800
1040
E (cm)
722
789
878
884
810
F (cm)
12,5
17,5
17,5
17,5
17,5
G (cm)
22
29
34
34
25,4
H (cm)
12,7
17
17
17
17,5

wymiary_suszarni

Fuel consumption for standard grain dryer

Fuel Consumption for drying  100 kg of grain
from 25% to 14% humidity
Consumption fordrying 100 kg of grain
from 30% to 14% humidity
Diesel oil (1) 1,05 1,2
Methane (m3) 1,05 1,2
LPG (m3) 0,4 0,46
Propane (m3) 0,33 0,39
Butane (m3) 0 26 0 30
 

Polnet Sp. z o.o. i Wspólnicy Spółka Komandytowa

 

 

tel: + 48 61 657 67 00
fax: +48 61 657 67 67

 

ul. Sowia 13 B
62-080 Tarnowo Podgórne

 

 office-anti-bot-bit@polnet.pl

Dział silosów zbożowych i paszowych

 

Elwira Wielechowska

 

+48 608 068 870, +48 532 415 847

 

e.wielechowska-anti-bot-bit@polnet.pl