Railroad Car Unloaders

Railroad Car UnloadersThe Foremost Railroad Car Unloader is a complete, self-contained material conveying system operating on a vacuum/pressure continuous loading principle which offers the advantages of continuous material flow at high rates over substantial distances. Continuous material flow not only insures maximum efficiency from the blower unit, but also eliminates any potential clogging which might occur (particularly at the bottom of long vertical lines) by intermittently starting and stopping the material flow as in a batching vacuum system.

Download the Railroad Car Unloader Brochure.

The Unloader utilizes a single positive displacement blower (as standard, or an optional dual blower arrangement if required) to create the vacuum as well as generate the positive pressure conveying air flow. The blower is protected from material entrance on the discharge side by a check valve. Further protection is afforded by using both vacuum and pressure relief valves. Critical functions are monitored by gauges. The single material receiver/ air filter features automatic, continuous filter element cleaning. Material build-up on the elements is monitored by a gauge. The rotary valve under the receiver is chain driven by a fractional horsepower gearmotor. In some applications the Filter receiver can be replaced with a cyclone transfer station.

Railcar Unloader Operation

Vacuum is drawn on the material receiver by the motor driven positive displacement blower. Material and air flow from the railroad car to the receiver through the rail car adaptor and flexible hose. In the receiver the material and conveying air are separated. The material falls to the bottom of the receiver and the air passes through a filter (or filters) to the blower. The material in the bottom of the receiver is metered out and fed into the pressure side of the system by a rotary valve. The conveying air on the pressure side is generated by the blower. Material and air flow, under pressure, from the Railroad Car Unloader to the storage silo or bins.

Railroad Car Unloaders

Model Specifications
Model H.P. Power Unit Dimensions Receiver Dimensions Shipping Weight
A (Length) B (Width) C (Height) D E
RC-20-40 20 82" 37" 60" 30" 139" 2750 LBS
RC-30-40 30 82" 41" 60" 30" 139" 3250 LBS
RC-40-40 40 82" 39" 60" 30" 139" 3790 LBS
RC-40-50 40 96" 44" 60" 36" 144" 4200 LBS

Typical Conveying Rates
Model 100 ft 200 ft 300 ft 400 ft 500 ft 600 ft 700 ft 800 ft 1000 ft
RC-20-40 11300 10000 8800 7600 6600 2750 LBS
RC-30-40 14800 13400 12000 10800 10000 9000 3250 LBS
RC-40-40 19500 18000 16600 15400 14200 13200 11400 9800 3790 LBS
RC-40-50 24000 20600 19000 17600 16400 13800 11800 4200 LBS

*Based on Suction Distance of 80 ft. Horizontal and 10 ft. veritical and 3 elbows and on pressure side vertical lift of 40 ft. and 3 elbows.

Power: 220/440 Volts, 3 Phase, 60 Hz
Compressed Air: 4.5 SCFM at 90-100 psi.

Railroad Car Unloaders

Figure Above: Combination Vacuum/Pressure (Pull/Push) Delivery from Railcar - Material is drawn from the railcar by the vacuum side of a pump assembly and transported by vacuum to a transfer station where it is dropped out of the conveying air stream and re-entrained in a pressurized air stream and conveyed by pressure to silos. The transfer station can be configured as a self cleaning in line filtered receiver or cyclone receiver with off-line air filtration.

The most frequently used of these is the combination (pull-push) system that draws the material out of the rail car by vacuum, passes it through a transfer station and blows it into the silo by pressure. The pull-push system is used most frequently because, for most applications, it is not possible or practical to attach a pressure system to a rail car and a vacuum system is not efficient for the distances, elevations and material transfer rates required to move material from rail car to storage silo. On the basis of the equivalent distances involved from rail car to silo and the required transfer rate, a pull-push system may include one positive displacement blower package using both the vacuum and pressure sides of the pump or two blower packages, one for the vacuum side of the system and one for the pressure side.

Filter Receiver Transfer Station

Vacuum Power Unit

Cyclone Transfer Station

Pressure Unit

Contact us today: - Tel: 973.227.0700

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Plastic Process Equipment

Plastic Process Equipment

23 Spielman Road, Fairfield, New Jersey, USA, 07004-6155
Tel: 973.227.0700 ~ Fax: 973.227.7307 ~ Email: