Horizontal submersible pump
Use ranges:
it is suitable for extracting underground water from deep well,also for carrying water from rivers,reservoirs and is mainly used for farmland irrigation and for human and livestock in plateau mountainous areas.
Product instruction:
Zhonglan QJ submersible pump is a water-lifting machine with direct connection between the motor and the pump to work underwater,it is suitable for extracting underground water from deep wells,and also for carrying water from rivers ,reservoirs,canals. It is mainly used for farmland irrigation and for human and livestock in plateau mountainous areas, and also used for water supply and drainage in cities,factories,railways,mines,construction sites.
horizontal submersible water pump characteristics:
motor and water pump are integrated,running under water,safely and reliable.
is no special requirements for well pipe and lift pipe( that is:steel pipe well,gray pipe well and earth well can be used;under the pressure permission,steel pipe,rubber pipe and plastic pipe can be used as lift pipe)
installation,usage,maintenance is convenient and simple,occupy small areas,no need to build pump house.
structure,saving raw materials,whether the submersible pump using conditions are appropriate and management properly are directly relative to the pump service life.
Use condition:
water inlet of the pump must be less than 1meter below the dynamic water level,but the submerged depth should not exceed 70m below the static water level,and the distance from the bottom of the motor should be less than 1m from the bottom of the well at least.
power less than or equal to 15kw(25kw when power supply allows)the motor starts at full voltage.
power over 15kw,the motor starts at reduction voltage.
use environment must comply to the specified conditions.
Why choose us? 3 advantages:
- Quick delivery! Stock pumps can be shipped quickly;
- Relibalbe quality! Manufacturing pumps many years,have a number of new and old customers;
price! Manufacturers supply directly without middlemen.
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第三类 Sewage Pump
12、
Submersible Sewage Pump
Sewage pumps are used more and more widely. From the original simply used to transport water to be able to transport a variety of sewage,such as daily life sewage,industrial sewage,construction site drainage,the liquid feed,etc. It plays a very important role in the municipal engineering ,industry,hospital,construction,hotel,water construction and other industries.
Attentions of submersible sewage pump:
(1) When humidity sensor or temperature sensor gives a alarm, or the pump body vibrates during working, or there is abnormal noise, or the water pressure on the output drops, or electricity consumption increased significantly, the submersible sewage pump should be stopped immediately for maintenance.
(2) When some submersible pump without good sealing immersed in the water for a long time, even not start to use, the insulation value will gradually decline, eventually can not be put into use, this declined time is even shorter than the time of submersible sewage pump constantly working in the water and then it has already shown the insulation disappeared. Therefore, the spare submersible pump in the suction tank are not actually effected. If the conditions allowed, put the pump on the shore and keep it dry. When one of sewage water pump in operation has problems, stop it immdiately and raise it up, put the spare pump into the tank.
(3) The submersible pump should not be turned on or off frequently, otherwise the service life of pump will be affected. When the submersible pump stops, the water in the pipeline attacks backflow, if you turn on the pump again that will cause the pump is overloaded, and accept the unnecessary shock loads; if you turn on or off other pumps too frequently, it will damage the parts with poor shock tolerance and bring damage to the whole pump.
(4) When the pump turning off, it can not be re-started till the motor is completely stopped.
(5) Pls cut off the power supply when you check the pump.
(6) During the pump working, do not wash things, or swim, or release livestock into the water in the near, to avoid the electric accident.
Characteristics of Zhonglan submersible sewage pump
Adopted advanced technology, strong sewage discharge capacity, no blocking, can effectively pass through solid particles in diameter φ30～φ80mm.
The tearing mechanism can tear and cut off the fibrous materials, and then discharge smoothly, no need to add filter net in the pump.
The design is reasonable, the matching motor power is small, the energy saving effect is remarkable
The mechanical seal with the latest materials can make the pump run safely for more than 8000hours
Compact structure, easy to move, easy to install, can reduce project cost, no need to build pump house
Can be used in the full head range, and that ensure the motor is not overload.
The float switch can automatically control the start and stop of the pump according to the required level change, no need special supervision.
Double guide rail automatic installation system, it brings convenience to installation, people do not have to go in and out the sump.
Equipped automatic protection control box to effectively protect the product from electric leakage, water leakage and overload, improved the safety and reliability of the product.
Design technology of Zhonglan sewage sump pump
In the general centrifugal pump, the power always increases with the increase of the flow, that is to say, the power curve is a curve that rises with increase of the flow, which will bring a problem to the use of the pump:
When the pump is running at the operating point, generally speaking, the power of the pump is less than the rated power of the motor, the pump is safe;but as the pump head range decreases, the flow increases(we can see from the pump performance curve), and the power increases.
When the flow exceeds the designed operating point flow and reach a certain data, the input power of the pump may exceed the rated power of the motor, causing motor to overload and burned.
When the motor is overloaded,either the protection system stops the pump running, or the protection system fails to burn the motor.
The pump head range is lower than the designed working point head, it is often encountered in practice.
One situation is in the selection of pump, the pump head range is selected too high, and the actual use of the pump is to reduce the use of the head range.
Another situation is, the pump operating point is not easy to be determined in the use, in other words, the flow of the pump often need to be adjusted.
There is also a situation where the pump need to be constantly changing the location for use.
These three conditions may make the pump overload and affect the reliability of the pump. So for the pump without full head range(including the sewage pump), its range of use will be limited.
The so-called full head range characteristic(also named no overload characteristic) refers to the fact that the power curve rises very slowly with the increase of the flow rate. Ideally, when the flow increases to a certain value, the power will not rise any more, but will decrease, that is to say, the power curve is a curve with a hump. If so, we just choose the motor rate power point slightly over the hump of power value, so at zero flow to the largest flow of the whole range, no matter you run on which point, the pump power will not exceed the motor power to overload the pump, for the pump with this kind of performance, whether the selection or use, it will be very convenient and reliable.
In addition, the motor power should not be too large, which can save considerable equipment costs.
