Suction Side Hydraulic Recirculation Following the dramatic success of the millMAX™ metal slurry pump, FLSmidth Krebs has incorporated the patented features into a new slurryMAX™ rubber lined pump product range. The patented feature has an externally adjustable wear ring that closes the suction side impeller clearance between the suction liner and the eye of the impeller. This clearance eliminates the problem conventional rubber lined pumps experience - that of pressure pulsations caused by the close proximity of the rotating raised expelling vanes to the suction liner, necessary to maintain fl ow, and subsequently generating heat in the liner and rubber devulcanization failure.
The ability to control the suction side clearance reduces the hydraulic recirculation and therefore contributes to maintaining the design fl ow over the life of the pump, increasing the life of the impeller. The extra-thick rubber lining has rigid reinforcement to prevent collapse onto the rotating impeller under upset vacuum conditions.
Impellers are oversized in diameter and available in metal or elastomers. High pressure casings are available for applications requiring multiple pumps in series. Pump sizes are available from 3” (75mm) to 16” (400mm).
KREBS slurryMAX™ Pumps
The millMAX™ Pump has a unique patented design developed exclusively for mill discharge duties and adapted for other severe abrasive slurries. The same wet end components can be offered as a conversion kit to existing pumps, without the need to disturb the foundation or existing bearing frame assembly.
The millMAX™ Pump features a patented on-line wear clearance adjustment, which minimizes the cost per ton pumped compared to conventional hard metal and rubber lined slurry pumps through:
Increased wear life
Even wear life of all wet end parts
Less down time
Lower power consumption
Increased mill throughput
More consistent cyclone separation
Improved gland seal performance
Low-cost — no risk wet end replacement
KREBS vMAX™ Vertical Cantilever Pump
Extreme Duty Vertical Cantilever Pump for Sump and Process Duties.
The new “vMAX™” line of vertical cantilever hard metal pumps has been developed for conventional clean up sump duties and process duties that require reduced degradation of pumped solids. The fully recessed torque flow cup style impeller design permits passing of pipe size solids and operation without the need for sump level control.
The casing is confi gured for bottom suction only to prevent build up of solids in the bottom of the sump. Leakage from the back of the casing, through the life of the pump, is prevented by high performance expelling vanes on the back shroud of the impeller. The suction entry is fl ared to promote prerotation of the slurry prior to entry into the pump and scours the floor of the sump to keep it clean.