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Overview

Dry bulk discharge vehicles need to combine reliable pneumatic performance with effective dust containment, often within very limited chassis space. For silo truck operators, equipment layout and filtration can directly affect discharge performance and the cleanliness of loading and unloading areas.

Remix Dry Mortar Ltd, a UK silo truck operator, needed to upgrade its fleet with new compressors. Its Euro VI vehicles have a short 3.25 m wheelbase, leaving limited space for mechanically driven compressor equipment.

Gardner Denver developed a multi-product solution combining a hydraulically driven XK12 screw compressor, Hydrapak 3 cooling system and Solimar return filter. The package provides efficient dry bulk discharge while addressing dust generated during unloading.

Challenge: Dry Bulk Discharge in Limited Chassis Space

Remix Dry Mortar Ltd had operated silo trucks in the UK for many years using Gardner Denver discharge equipment. When the company upgraded its fleet, the new Euro VI vehicles introduced a significant installation challenge.With a 3.25 m wheelbase, there was little room available for a conventional mechanically driven compressor.Space was not the only consideration.

 

The company had historically used a filter bag system to contain dust generated during silo unloading. This had not always fully contained the dust, with some escaping into the surrounding loading and unloading areas.

 

The new system therefore needed to address two different requirements:
  • Fit compressor and cooling equipment into a restricted chassis space.
  • Improve containment of dust during dry bulk unloading and depressurisation.

Solution: XK12 Compressor, Hydrapak 3 and Filtration

Gardner Denver selected the hydraulically driven XK12 screw compressor for the application.

The compact equipment configuration helped accommodate the vehicle's limited installation envelope. The XK12 is positioned inside the chassis, while the Hydrapak 3 is installed below chassis level at the side of the vehicle.

This positioning maintains adequate swing clearance between the tractor unit and coupled semi-trailer.

The Hydrapak cooling system also provides the thermal management needed for the compressor to develop maximum power continuously.

 

Dust Filtration with the Solimar Return Filter

Dust containment was addressed by replacing the previous approach with a Solimar return filter.

The filter is attached directly to the silo vent and prevents discharge dust from being deposited externally. The tanker can then be depressurised through the filter without releasing dust into the surrounding area.The filtration system also incorporates a signal light that indicates when the dust collector is full and needs to be emptied.Together, the compressor, cooling and filtration technologies create an integrated dry bulk discharge package designed around the operational and vehicle-layout requirements of Remix Dry Mortar Ltd.

WHEELBASE

3.25

m

Compact installation

Hydraulic equipment fits within the restricted Euro VI chassis.

DUST CONTAINMENT

Filtered

Silo depressurisation

Solimar return filter prevents discharge dust from being deposited externally.

COMPRESSOR OUTPUT

Maximum

Continuous power

Hydrapak cooling enables the compressor to develop maximum power continuously.

Impact and Results

The multi-product approach provides Remix Dry Mortar Ltd with a practical solution for both discharge performance and dust containment.

Compact Vehicle Integration

Using the Hydrapak 3 allowed the equipment to be installed despite the restricted space on the 3.25 m wheelbase vehicle chassis.

Positioning the XK12 within the chassis and the Hydrapak below chassis level also preserved the swing clearance required between the tractor and semi-trailer.

Efficient Compressor Cooling

The high-efficiency cooling system enables the compressor to develop maximum power at all times, supporting the demanding discharge requirements of the silo truck application.

Improved Dust Containment

The Solimar return filter prevents dust from being deposited externally during tanker depressurisation. This addresses the limitations experienced with the previous filter bag approach and helps maintain dust-free loading and unloading areas.

Easier Filter Monitoring

The integrated signal light alerts operators when the dust collector is full and requires emptying, adding a practical monitoring feature to the filtration system.

Key Takeaways

  • A hydraulically driven dry bulk compressor can solve installation challenges where chassis space makes mechanical-drive solutions difficult.
  • The XK12 screw compressor fits discreetly inside the vehicle chassis.
  • The Hydrapak 3 can be installed below chassis level while maintaining tractor and semi-trailer swing clearance.
  • High-efficiency cooling allows the compressor to develop maximum power continuously.
  • A Solimar return filter prevents discharge dust from being deposited externally.
  • The tanker can be depressurised through the filter without releasing dust into the loading or unloading area.
  • A signal light indicates when the dust collector requires emptying.

Download the Dry Bulk Compressor Case Study

Discover how a combination of XK12 screw compressor, Hydrapak 3 and dust filtration technology created an efficient discharge package for a space-constrained silo truck fleet.

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Frequently Asked Questions

The application uses a hydraulically driven XK12 screw compressor. It was selected partly because the vehicle's short wheelbase provided limited space for a mechanically driven compressor.

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