Automatic sampler for sample collection from trucks

The auger sampling device is mounted on the positioning device which moves the unit to the chosen position. The sample will be taken in accordance with regulations from any place or depth of the dump truck bed.

Basic description

Extraction of sample

The auger sampling device is mounted on the positioning device which moves the unit to the chosen position. The sample will be taken in accordance with regulations from any place or depth of the dump truck bed. The auger will extract the material from the truck while performing primary division. The needed part of the sample is collected into the sample hopper and the rest is dropped back to the truck. After the hopper is full, the sampler returns back to the home position to discharge the sample into the chute of the processing line for further sample processing.

From the chute the sample is transported to the crusher to be sized down to 10mm. The processing of the crushed sample continues onto the analysis conveyor and then the sampling conveyor to be further divided by the secondary sampling mechanism. The divided portion of the sample is stored into the containers at the carousel, the remaining part is dumped outside the processing line house.

Sample deposit

The sample containers are equipped by closing lids which are only opened in case of filling by the sample. The rotary carousel can handle up to 16 containers for sample storage so that the distinct final samples can be stored selectively according to different suppliers, freighters or other criteria. The sampler can be also equipped by automatic packing machine with indexing for long-term sample storage.

Sample representativeness

For the best achievable sample representativeness the place of sample extraction from the truck bed is chosen automatically on random basis. Based on the batch size information the system will determine the number of samples taken from the trucks in order to collect suitable amount of final sample for the laboratory analysis.

System controls

The sampler is controlled from the operator cabin. The process of sample extraction and processing is
pre-programmed and fully automatic. Work of the operator is limited to start the automatic operation and supervision. Communication with the system is ensured by the rugged industrial-grade control panel where it is possible to monitor, change and setup all working parameters of the automatic system, e.g. the time of sample extraction, number of samples taken, statistics of samples taken for each supplier, status of individual devices etc. It is also possible to set the parameters of the sampling process and view the errors and alarm messages.

Advantages

  • Sample extraction from the full material depth
  • Works with a range of coal qualities including wet or frozen material
  • Short sample extraction cycle
  • Integrates complete sample preparation procedure
  • Environmental protection of the collected sample
  • Simple operation and manipulation
  • Automatic operation with one supervisor only

 

General technical data

Sampled material*Lignite, Hard coal, Other bulk materials
Granularity of sampled material*0 – 250 mm
Final sample granularityas per requirement, min. 0 – 3 mm
Quantity of final sampleas per regulations & customer requirement
Homogenization of final sampleas per regulations & customer requirement
No. of final sample containers*Max. 16
Volume of final sample*Max. 80 l
Overall dimensions2,5 m x 6,1 m x 4,8 m (w x l x h)
Boom lengthtyp. 7 m
Side distancetyp. 3 m
Auger diameter* max. 500 mm
Auger speedtyp. 45 to 120 rpm
Power feed*3 NPE 400 VAC/50Hz, TN - S,
3 PEN 400 VAC/50 Hz,
Environmental protectionIP 65 (Ex zone 22)
Working temperature-40°C / +55°C
OuputsModBus, ProfiBus, Ethernet
* Other options on request

 

Coarse sample crusher

Hammer crusher

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Automatic sampler for sample collection from trucks, Bitola

Gantry positioning device

Secundary division