Hidrostal screw centrifugal impeller

The Hidrostal screw centrifugal impeller consists of a single helical blade rotating axially in the pump casing. The long radius of curvature of the blade and the rounding results in a smooth laminar transition from axial direction to radial direction. There is thus no angled transition of the medium. The impeller rotates in the medium and pulls it into the pump. The construction of the impeller also provides an increase in the free solids passage. The advantage: no risk of clogging!

More than 100 types

With the screw centrifugal impeller a Hidrostal pump combines the characteristics of a positive displacement pump with a centrifugal pump. This makes these pumps suitable for pumping numerous media ranging from clean water to viscous fluids with large particles and even stiff fibres. The range includes more than 100 types, with capacities up to 5,500 m ³/ h and discharge heads up to 90 metres. Hidrostal pumps therefore are also used within a wide operating range.

Characteristics

• Various models, including submersible pump, bare shaft pump and close coupled to frame;
• Available in amongst other GGG 60, 316 stainless steel and chromium steel;
• Various safety devices, such as bearing temperature protection, klixon, PTC, PT100 in the windings and shaft seal leakage detection;
• Options: oil cooling jacket, externally adjustable impeller clearance, replaceable wear wall, motors for explosion-proof use in accordance with EEx d II B, T3 or T4 and hydraulic actuators for zone zero.

Application areas

• Mud, silt, raw sewage and bentonite
• Viscous liquids and water with solids, including long fibres
• Surface water (such as reservoirs, canals and ponds)
• Industrial wastewater
• Delicate materials, such as fruit and vegetables
• Meat & poultry