We are obliged to sewage pumps for convenience of living in a private house. Correctly and correctly selected type of pump and arrangement of sewerage provides the necessary life support for the house. Before buying expensive equipment, do not interfere with listening to advice on choice. What do specialists offer?
Content
Types and purposes of sewerage-drainage pumps
The main purpose of sewage drainage pumps is to drain and pump off sewage having foreign impurities. Pumps of this type are indispensable for pumping polluted water from drainage pits, sewage pipelines, foundation pits and treatment plants.
Using various models of a sewage drainage pump, it is possible to drain faecal effluents in multi-storey and private houses. However, experts advise to distinguish between drainage and fecal pumps. The principal difference lies in the size of the impurities being pumped in the effluent. Recall that for drainage pumps, the size (diameter) of impurity particles ranges from 3 to 12 mm, and for sewage pumps the particle size is up to 120 mm.
Thus, sewage pumps are classified into the following types:
• Drainage pumps designed for clean and slightly polluted water
• Fecal pumps used for sewage sinks
• Sewage pumps designed to discharge sewage drains.
Fecal sewage pumps are used for sewage, where the size of solid impurities is negligible. To grind suspended particles, the plumbing equipment is supplied with special carbide cutting mechanisms.
By what parameters is the pump selected
The choice of the model of sewage drainage pumps must be made, focusing on the main parameters:
• specifications
• Construction
• Operating conditions.
sewage drainage pumps
Recall that the main technical characteristics of drainage pumps for sewage are their productivity and pressure. For reference: the performance of drainage pumps ranges from 85 to 100 l / min, and the head is 6.0 to 8.0 m. For this type of pumps, asynchronous motors equipped with built-in thermal protection are used. The protection class is ip65 - ip68.
Structurally drainage pumps for sewerage, whose price ranges from 2 to 5 thousand rubles, consist of a casing and body of the pump part made of polymer with a mechanical seal of graphite ceramics and standard 1.5 "nozzles.
It is recommended to operate drainage pumps at a maximum waste water temperature of plus 50 deg. C. The size of solid particles is up to 50 g / cc. The high productivity of drainage pumps allows the transfer of water with various impurities in the form of silt formations and small particles of sand. Pumping of sewage (without feces) is carried out in accordance with DIN EN 12050-2.
If you choose the pump yourself, you need to remember that these types of pumps are distinguished:
• submersible
• superficial.
The level of dehumidification by a surface pump, in contrast to a submersible drainage faecal pump, can be negligible and is 2-3 cm. Naturally, when choosing a pump it is important to have a simple connection using standard nozzles.
For example, a submersible drain pump grundfos will be equipped with a pressure nozzle:
TS 65 = Rp 2½, TS 50 = Rp 1¼, TS 40 = Rp 1 and the connection required for connecting the hose.
Therefore, when reading reviews on drainage pumps for sewage, pay attention to the presence of standard nozzles, and not to the spectacular bright red color of the pump.
Detailed information on technical characteristics and possibilities of drainage pumps is presented in the video.
sewage fecal pumps
The purpose of fecal pumps is pumping dirty water out of household cesspools and drains. Compared to drainage pumps, the productivity of fecal pumps is more significant and ranges from 150 to 300 l / min. with a head from 7,0 -10,0 m and above. The bodies and casing of the electric motor of the fecal pumps are made of stainless steel or cast iron with a reliable mechanical graphite ceramic seal.
The powerful output and head of the pump are provided by the drive shaft of steel and a single-channel impeller equipped with a cutting part - sharpened blades.
Pumps are equipped with standard 1¼ "diameter nozzles. Fecal pumps excellently cope with dirty water containing mechanical impurities with a diameter of up to 15 mm. Submersible drainage fecal pumps with a knife allow grinding large fractions of dirt in a few seconds.
Therefore, for the use of pipes with a cross-section of DN 50. The most popular is the drainage fecal pump sprut.
When choosing a fecal pump, it is necessary to take into account that for some models it will be necessary to additionally purchase a flanged outlet branch pipe with a diameter of 3 ".
What the experts advise when choosing sewerage faecal pumps is shown in this video.
How to choose sewage drainage pumps
Considering the significant cost of sewage pumps, it is necessary to make an informed choice, which should answer some questions:
• for what purpose it is necessary to purchase a pump
• What is the degree of water pollution and the expected quality?
• temperature transfer of waste water
• Sewage equipment capacity and possible sewage delivery height
• Estimated depth of draining and pumping out drains.
Of course, it does not hurt to know the length of the electric cord of the pump. For ease of use, manufacturers equip the equipment with a cord of the required length (up to 10 m).
However, in the case of a practical lack of a self-draining system, the most beneficial is the choice of innovative sewerage systems and systems. What does sewage pumps and installations bribe? This is the possibility of free design and installation for tapping faeces in any part of the private house.
The main characteristics of sewage pumps are:
• hydrostatic head up to 9.0 m
• the maximum speed of the electric motor is 2800 rpm with a power factor of 0.92
• thermal protection according to European standards.
Let's add that the sewage pumps represent compact systems capable of providing pumping out of drains where there is no natural slope of sewerage. Installation of self-cleaning sewage pumps is simple.
Installing with your own hands a suitable model of the pump, still it does not hurt to get acquainted with the "Instructions for installation and operation".
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