Submersible pump

ABS Submersible pumps
ABS
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Bedu Submersible pumps
Bedu
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Bell & Gorssett Submersible Pumps
Bell & Gorssett
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Calpeda Submersible pumps
Calpeda
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Caprari Submersible pumps
Caprari
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DAB Submersible pumps
DAB
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Duijvelaar Submersible pumps
Devil
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Ebara Submersible pumps
Ebara
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Emu Submersible pumps
EMU
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Goulds Submersible Pumps
Goulds
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Grindex Submersible Pumps
Grindex
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Grundfos Submersible pumps
Grundfos
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JS Submersible pumps
JS
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KSB Submersible pumps
KSB
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Landustrie Submersible pumps
Landustrie
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Speck Submersible pumps
Speck
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Sulzer Submersible Pumps
Sulzer
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Wilo Submersible pumps
Wilo
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Xylem Submersible Pumps
Xylem
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The submersible pump is the most common so-called "wet" pump on the market. Depending on the pressure/capacity, submersible pumps all have the same structure: the suction side is generally at the bottom with the pressure side (outlet) on the side, with or without a flange on a so-called suspension hook. The E-motor is built directly on the pump housing, generally the impeller is mounted directly on the extended motor shaft. Technically speaking, there is not much difference with the standard types of submersible pumps. Submersible pumps also include specific pumps for clean water, waste water, but also for cooling water and various other mediums that are pumped directly from a tank. The pump can be divided into three parts: the bearing bracket, the liquid part and the shaft seal(s).

The E-motor

The E-motor is closed off from the medium part by means of a mechanical seal, this can be a single mechanical seal but also a double mechanical seal with a buffer chamber in between that is usually filled with oil. The E-motor is usually cooled by the medium in which the pump is suspended, unlike a dry E-motor where it is cooled with air by a fan. There are versions where the E-motor has a flow internally from the medium side through which it is cooled, which is done when the level in the tank where the pump is installed falls so low that the medium is below the E-motor surface. In addition, there are also submersible pumps that are completely filled with a special oil that partly provides cooling and lubrication, since the bearing of the entire pump is built into the E-motor.

The shaft seal

This is an integral part between the liquid part of the pump and the shaft. In the case of a submersible pump, so-called "mechanical seal(s)" are used, which actually have a stationary and a rotating part and use extremely flat races that, if chosen and installed correctly, guarantee a very high degree of sealing. .

Liquid part

These are actually a pump housing with a suction and a pressure connection, in which the impeller rotates. The rear of the housing is closed by a back plate through which the axle comes through and the axle seal is mounted.

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