HIGH-PRESSUREFACE SUPPLY SYSTEM

HIGH-PRESSURE PUMPAHIGH-PRESSUREPUMP

A TANKUNIT

B FILTERSTATION

C EMULSIONMIXING PLANT

D

The high-pressure pump HDP is a maincomponent of the face supply systemand is designed for providing the hydrau-lic equipment parts in the longwall facewith pressure fluid. It is a three-cylinderplunger pump of compact design. Thespecial advantage offered by this pump isthe unique high-pressure plunger sealingaction which reduces friction losses andwear to a minimum. This ensures a longlife at highest pressures.

The hydraulic fluid is drawn from the tankconnected to the pump and first broughtto a higher pressure level via the boosterpump. Afterwards, the fluid is routed overa filter before it is fed to the high-pressurepump. An Ex-protected three-phase cur-rent motor drives the high-pressure pumpvia the crank drive. The high pressure isthen generated in the pump and the fluidis supplied to the face.

Due to the functional design the high-grade steel pump head is not subjectedto cyclic stresses and is therefore almostfree of fatigue failures. The bearings arelubricated via oil ducts in the crank shaft,the piston bolts are lubricated via oilducts in the connecting rod.

An recirculating oil lubrication systemwhich mainly consists of an oil pump, anoil cooler – oil filter combination and theoil pressure gauges supplies all bearingand sliding points with filtered oil.

The high-pressure pump is protected allaround by a frame with protective cover.Skid-shaped bottom carriers ensure thatthe pump unit can be transported easily.

The simple design and the good accessi-bility to the pressure valves facilitate main-tenance work. A pump circulation controlswitches the high-pressure pump to non-pressure circulation as soon as the vo-lume flow is no longer required in thecircuit. The fluid is routed to the tank. Assoon as pressure fluid is required againthe high-pressure pump is switched backto delivery.

FUNCTION AND DESIGN

The high-pressure pump is controlledby means of a pump control unit,power is provided via an Ex-protec-ted three-phase current motor

HIGH-PRESSURE PUMP

Pump circulation controldirectly attached to thepump head

Frame with protectivecover

Pump control unit

Motor for boosterpump

Pump motor

Booster pump

Pre-filter for HP pump

High-pressure pump

Pump circulationcontrol

2 4 6 8

1 3 5 7

HIGH-PRESSUREPUMP

"T"

2515 1240

1275

Pump type HDP 177

Delivery rate 290 l/min

Pressure max. 330 bar

Permissible fluid temperature 40 °C

Oil quantity 12.5 l

Oil pressure 2.0 bar

Speed 1500 rpm

Crank shaft speed 555 rpm

Piston diameter 55 mm

Drive power 170 kW

Motor frequency 50 Hz

Motor power 200 kW

Motor speed 1500 rpm

Type of protection of motor IP 55

Type of protection I M2 EEx d I

The technical data listed here refer to the standard design.� Further options are available upon request.

Tiefenbach Control Systems GmbH · Rombacher Hütte 18 a · 44795 BochumTelephone +49 (0) 234 - 777 66 - 0 · Fax +49 (0) 234 - 777 66 - 999info@tiefenbach-controlsystems.com · www.tiefenbach-controlsystems.com

Subject to technical alterations

H I G H - P R E S S U R E P U M P

Pump unit with 200 kWand 5.5 kW motors com-plete with cables andhoses