Solids Handling Pumps Electric
Solids handling pumps electric are design specific to size of solids. We handle four design styles. Learn the difference. Shop best design with discount price.
Very few water pump related applications are free of solids; therefore solids handling by electric water pumps is necessary. The pump design, size of the solids and maintenance frequency impact how solids are handled.
Pumps Design Options
Water pumps depend upon centrifugal force to move water from one location to another. The flow of water which may contain solids requires a design to handle the solids. The most common designs include a screen or a vortex impeller and sometimes a cutter grinder.
1) Screen Design
To prevent solids from flowing or being sucked into the volute impeller, pumps use screens. The location of the screen varies by pump manufacturer. Some use a bottom screen; others use a side screen and still others use a top screen. The screen mesh must be close enough to prevent the entry of solids. Obviously if there are solids in the water, the screen will eventually become clogged.
2) Vortex Impeller Design
A vortex impeller design allows solids to flow through the volute without becoming caught or plugging the impeller. However, the size of solids determines the size of the volute impeller resulting in different water pump styles. Some vortex impellers can only handle 1/4 inch solids, others 3/4 inch solids while others can handle 2-inch solids.
3) Cutter Grinder Design
The cutter grinder cuts through any solids even larger than 2-inches in diameter and grinds the solids to small pieces for flow through.
Size of Solids Determines Kind Of Pump Needed
Sump pumps with vortex impellers can handle solids from 1/4 inch to 3/4 inches. They are known as effluent sump pumps. Sewage pumps have 2-inch solids handling capability. Grinder pumps handle solids larger than 2-inches by cutting and grinding them to small pieces. Therefore the size of the solids, debris, sludge, stones and other foreign objects in the water determines what kind of water pump is needed.
Design Type Determines Maintenance Frequency
Obviously, water containing numerous large solids will clog the screen style very quickly. even small solids in the water will clog the screen over time. Pumps using the vortex impeller design or cutter grinder will not require frequent maintenance because they have a way to handle the debris.
All sump pumps are designed to deal with basin solids. However the design determines how they handle solids. Some sump pumps allow solids to flow through the volute impeller and others do not.
Pump Design Preventing Solids In Volute Impeller
To prevent solids from flowing or being sucked up into the volute impeller, pumps use a screen. The location of the screen varies by pump manufacturer. Some use a bottom screen; others use a side screen and still others use a top screen.
Pump Design Allowing Solids Flow Through In Volute Impeller
Pumps with a vortex designed impeller have no screen. The vortex design allows solids to pass through without getting caught. The grinder pump cuts and grinds solids into small size so they can pass through without getting caught.
When should a solids handling sump pump be used?
All sump pits have a certain amount of small stones and sludge entering the pit; therefore it is best to install a sump pump with a vortex designed impeller. These pump types are known as Effluent Sump Pumps.
Pump Cost Dependent Upon Design
The cheapest design is the screen. Screens are used frequently in 1/4 and 1/3 HP sump pumps with thermoplastic housing.
The next cheapest design is the effluent pump using the volute impeller with cast iron housing.
The next cheapest design is the sewage pump with a 2-inch vortex impeller volute flow through with cast iron housing.
The most expensive design is the cutter grinder which can handle foreign objects thrown into a toilet.
How To Determine Which Design Is Best?
The best design style for a sump pump is the effluent pump with the vortex impeller. Few sump basins are free of small pebbles and debris. Continually focusing on maintenance to prevent screen clogging and pump failure is not the best option.
The best design style for a sewage pump is the grinder if there is possibility that foreign objects will be discarded in the toilet.
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