The new Cornell SP slurry series was tested in both the lab and the field. Cornell knew the pump was tough, surviving 1500 hours of lab testing, where the volute on the 4 inch Slurry Pump was polished and dented in more than 200 locations by a stream of 30 percent silica sand changed every 50 hours to keep the sand edges coarse. The amazing thing about that lab test was that the patented Cycloseal® mechanical seal still had primer from the original installation on it when the volute, impeller, and expeller all showed significant wear.
Another test of the slurry pump came from a pumping trial at a mining site. The 3 inch white iron slurry pump was moving heavy solids fed from a dredge head off a bottom of the pond. The pump worked continuously for three months without a breakdown, seal wear, or decrease in performance.
The pump was returned to Cornell to inspect. As with the pump in the test lab, the volute and impeller showed obvious signs of wear. Debris such as 3 inch long stick, numerous rocks, and metal band ends were pulled from the volute and piping of the pump. However, the Cycoseal® was still as pristine as when it went out of the factory. After three months of use in the harsh Canadian climate, it too still had the primer paint on the volute.
The president of the test company commented on the Cycloseal® system “It’s huge,” he said. “Not having to do a water flush or replace packing materials constantly saves time and money, and the Cornell pump performs runs like a top. Game changer can be overused…but in this case, Cycloseal® really does change the whole game for slurry pumping.”
Cycloseal® technology has been used on Cornell pumps in other industries for years, and the innovation is changing mine dewatering and slurry pumping. The Cycloseal® back plate removes solids and abrasive materials from the seal area while purging air and gas pockets, extending seal life and eliminating need for venting or water flush. Seals don’t leak and last up to three times as long as standard seals.
Cycloseal® is available on almost every pump Cornell produces.
Food Processing Company swaps out “unreliable, dangerous, and cumbersome,” electrical submersibles for Cornell 6ST.
While displaying Cornell pumps at the Sacramento Food processing show, The Cornell distributor for Central California was approached by the maintenance team from a well-known tomato processing facility in Stockton, California. This plant processes thousands of tons of tomatoes during the harvesting season and very rapidly turns them into various table favorites.
As part of the wash segment of processing the delicate fruit, a lot of waste is removed and washed away in what is known as a ‘trash wash.’ This waste has to be moved away from the now clean tomatoes and processed. The trash wash contain not only dirt, but also pieces of stems, bad peels, leaves, and so forth gleaned from good tomatoes, along with rotten or bruised fruit.
Because of the ripening time of tomatoes, the processing plant runs at capacity around the clock for approximately four months straight. Speed is needed to keep premium freshness at a maximum and waste at a minimum. The processing company had been employing large electric submersibles to clean out the giant wash trays in the trash wash section of the plant. They electrical submersibles were not performing well, even being described by the plant personnel as “Unreliable, dangerous and cumbersome.”
One of the main complaints was the inability to monitor the electrical submersibles while they were operational. If the pumps weren’t working efficiently, that wasn’t noticed until the trash wash backed up; delays there impeded the line and imperiled the maximum amount of tomatoes being processed. Ultimately those slowdowns made the plant less profitable than it could have been.
The distributor suggested a self-priming solution from Cornell. With these high quality self-priming pumps, the plant staff can maintain and clean their pumps safely and efficiently. They can tell if there is an issue immediately, and they have the confidence that issues are rare with Cornell. This has helped increase plant efficiency several percent—with millions of pounds of tomatoes that extra efficiency translates into more operating revenue for the plant.
The plant is so impressed with the pumps that they are working with Cornell and the distributor to find other pumps to replace with Cornell’s solids handling, high volume, and high head solutions.