Schurco Slurry, a heavy-duty slurry pump manufacturing company specializing in lined centrifugal slurry pumps, is announcing a new approach to a common application found in many stone, sand and gravel plants.
Effluent and overflow process streams are common in many washing and screening plants, and these flows typically carry solids, which can cause wear and tear on standard end-suction pumps. Even lined horizontal slurry pumps like the Schurco S Series experience seal failures and other issues just due to the abrasive nature of water being pumped.
|Schurco Slurry V Series Model 6VS150M at aggregate plant in Texas.|
|V Series cross-section.|
|Series motor mounting option: shaft down (left), shaft up (right).|
Schurco offers an answer to these and other problems through the use of its low-maintenance and robustly designed vertical cantilever slurry pumps, the V Series model.
The V Series is unique from other vertical pumps. It is fully cantilevered by design, and does not require lower bearings or external sealing or cooling water. These pumps can also run completely dry with no adverse consequences to the equipment in what is called “snore” mode. Cavitation is a thing of the past.
Chief design features include:
- No Submerged Bearings. Eliminates submerged bearings, packing, lip seals and mechanical seals.
- No Shaft Seal. Due to the unique double suction impellers fluid flow enters the top as well as the bottom, and eliminates the requirement for a shaft seal.
- Safe to Run Dry. Can run completely dry without adverse consequences.
- Robust Bearing Assembly. The maintenance-friendly bearing assembly has heavy duty roller bearings, robust bearing housings and a massive shaft.
- Highly Abrasive Resistant Wetted Parts. Metal construction pumps have a heavy walled abrasive resistant chrome alloy casing. Rubber construction pumps have a molded rubber casing adhered to sturdy metal sub-structures.
The technology behind these pumps is purposefully simple: oversized bearings, oversized shafts, thick chrome-iron or rubber lined castings and a solid integrated platform.
This pump is robust where it counts even including a cast discharge neck on the pump casings themselves, unlike previous generations of pumps, which used pipe elbows.
Large vane passages on the impeller means large chunks of rock or trash can easily pass through this pump, or if that is undesirable upper and lower strainers can be used to prevent oversize material from entering the pump.
For system designers and structural planners, the V Series brings even more features to the table. Because the pump is designed to sit down in a sump, effluent and overflow process streams, which are typically gravity fed, can now be directed into a below-ground sump for collection. No longer will arrangement of pump boxes and above ground sumps have to be considered with a V Series pump mounted over a below-grade sump or vault.
Mounting the V Series pumps is as simple as four through-bolts on the pump mounting plate. The motor is fully supported on the pump base itself, and can be oriented in either a shaft-up or shaft-down position depending on customer preference and space availability.
There are many optional add-ons that make this pump an even more must-have piece of equipment around the plant:
- Standard or large particle (torque-flow) impellers.
- Agitator attachment.
- Suction extension (tailpipe).
- Various strainer options.
- Motor shaft orientation.
The V Series ranges in capacity from flowrates as low as 30 gal. per min. (gpm) in a 1-1/2-in. discharge through 6,000 gpm in the 10-in. discharge pump. Heads of up to 160 ft. are also achievable with the fully cantilevered design.
Schurco Slurry is already working with many aggregate producers on installing these pumps into these specific unit operations and other general sump and cleanup pit applications.
Schurco Slurry, www.schurcoslurry.com