Choosing a pump for dirty water
Borehole pumps and wells serve to supply water with a small amount of foreign impurities. Watering from a natural reservoir, pumping flooded basements and sewers requires a dirty water pump. Such devices have a special design or protection of the working body from abrasive wear - a filter installed on the intake pipe.
Types of devices for moving drains and drains
All pumps for pumping muddy and dirty water are called drainage pumps. Devices can be submersible and surface. They are also called mud pumps.
But if a mud pump pumps a liquid that looks more like porridge, it is called a sludge pump. If the pump is equipped with a grinder, it is called fecal.
The pumping of liquid with an increased amount of suspension is carried out by different devices:
- cleaning of bottom sediments from wells and boreholes, drainage of silted chambers is performed by vibration or screw pumps;
- pumping water from ponds, pools, after flooding basements, you can drain pumps for dirty water;
- liquid with a large number of different fractions is pumped by sludge and fecal pumps.
Using garden pumps
Most often, summer residents have to use equipment for watering plants. In the presence of an open reservoir, water intake is carried out by a surface pump for dirty water. Low power single impeller centrifugal pumps are commonly used. Such a device is capable of pumping turbid water containing a suspension of no more than 1 cm in cross section.
The pump can be installed on a platform and lowered onto the water surface. In this case, the lifting height cannot exceed 5 m, and the working time is limited and is associated with the danger of engine overheating. The advantage of the device is only in simple maintenance and low price of the pump for dirty water.
There are many disadvantages of a surface pump:
- noisy work;
- short service life;
- a canopy is required from accidental water ingress;
- you can not swing water at subzero air temperatures;
- the device in a plastic case quickly breaks down.
However, for summer use in the country, surface pumps are often installed.
Using submersible pumps for dirty water
The use of devices with a sealed body allows you to raise more turbid water from a depth of more than 5 meters. Pebbles up to 5 cm in diameter will slip through the chamber. Water cooling extends pump run time without overheating.
Bottom inlet pumps can drain the tank completely. In this case, the built-in thermal protection will save the engine from overheating. But such pumps do not work, sinking into bottom sediments.
If a pump for dirty water with an upper intake is selected, a dry-running cut-off system with a float switch, thermal protection of the electromagnet winding - the swinging is carried out automatically. The vibrating submersible pump is often used for cleaning the bottom of wells, pumping pools and ponds.
Optimally, after running for 2 hours, stop the pump for 20 minutes.
If the submersible dirty water pump is equipped with a grinder, then it belongs to the fecal class. Such pumps can swing septic tanksinstalled in VOC. Fecal pump, installed in a muddy pond, will supply organic fertilizer for irrigation in the form of a bottom biological mass. Such a pump will work on muddy water as well. It is he who is considered a universal apparatus.
Advantages of the universal pump:
- power;
- strength;
- long service life.
When choosing a pump for dirty water, only the high cost of fecal matter can be an obstacle. So drainage pump Gilex costs 2 times cheaper than Jileks Fecalnik.
As submersible pump for well more often a single-channel centrifugal pump is used. At enterprises, screw pumps are used to supply sludge to the accumulators. To lift silt deposits from the bottom of the well, a vibration pump with a lower intake is lowered. In each case, the most suitable system is selected.
Varieties of slurry pumps
When draining the pit, a submersible slurry pump is used, capable of lifting stones 12-15 cm mixed with wet soil. These machines use a particularly robust single-channel impeller and an agitator with cutting edges. Preliminary loosening of bottom sediments, passing them through a filter mesh is the task of an additional unit.
Classification of mud pumps by the nature of extraction
How do you choose the most suitable equipment for your specific application? It is important that the working chamber is not clogged with debris. We classify equipment according to the ability to pump large fractions:
- submersible pump no more than 35 mm;
- the drainage device will cope with stones up to 50 mm;
- the fecal pump will pass a fraction up to 80 mm;
- the slurry pump pumps stones 145 mm.
Based on the working conditions, from the named categories it is necessary to select pumps for dirty water in terms of pressure, power and performance.
Examples of various drainage pumps
Submersible pumps Gnome represent a centrifugal unit with a squirrel-cage asynchronous motor. It can swing a suspension up to 10% with particles up to 5 mm. There are 50 pump models available:
- household;
- for public utilities;
- for irrigation and drainage systems.
Chinese-made Patriot F 400 pumps under US license have a low cost, lift mud up to 35 mm, from a depth of up to 5 meters. A small device weighs 5 kg and costs about 3 thousand rubles.
A submersible pump for dirty water from the well-known manufacturer Grundfos costs about 10 thousand rubles. Full automation of the process. But the size of the inclusions should not exceed 10 mm. The productivity of the apparatus is 12 m3 / hour, extraction from a depth of up to 10 m.
From a variety of pumps, it is necessary to choose a device that provides pumping under certain conditions.