Blackmer Compressors

Reciprocating gas compressors

The reciprocating compressors create a low-pressure area in the compression chamber when the piston moves from the highest point to the lowest point of the stroke. Gaseous product (at a higher pressure) moves into the compression chamber. This volume of gas is then displaced when the piston moves to the top of the stroke. Equipped with high-efficiency valves, ductile iron cylinders, self-adjusting piston rod seals and other robust features, these compressors are designed to provide maximum performance and reliability under the most severe service conditions.

Rotary vane compressors

These compressors incorporate simple, dependable, rotating sliding-vane technology to provide sustained performance pressures or vacuums for off-loading liquids. A rotary vane compressor takes in atmospheric air through a high-performance inlet air filter, and discharges the compressed air at a higher pressure into a cargo tank. The elevated pressure pushes the liquid out through the discharge piping.

Screw compressors

Within the compressor body there are two screws with matting profile: a female and a male screw, the female having concave inlets, and the male with convex helical inlets. The screws rotate in opposite directions, with the female screw receiving the driving power and transmitting this power to the male screw through a set of synchronisation gears.

As the screws rotate, the air is drawn into the inlet port and fills up the space between the screws. This phase is the admission. The key phase is the compression. It starts when the end of a male thread blocks the end of a female thread. The volume available between the compressor body and these two threads then progressively decreases during rotation. When this volume merges into the delivery outlet of the compressor, the third phase takes place: the exhaust.

Throughout this process, there is no contact between the screws. This means no wear, total reliability, and non-pulsating air delivery. These compressor/blowers can be used in either a mobile or stationary application, and can be driven by a PTO, electric motor, or hydraulic power system. A complete range of dedicated ancillary products is available to support this product line.