Submersible sewage pump is widely used in sewage treatment and water supply and drainage engineering, the traditional submersible sewage pump motor cooling methods generally use direct cooling and jacket cooling water, such as the Chinese patent 200920190999.5 discloses an internal cooling cooling submersible sewage Pump (the second generation of submersible sewage pump products).
Submersible sewage pump
The submerged sewage pump includes a pump body, a stator in the pump body and a rotor in the middle of the stator. The inner periphery of the pump body is provided with a cooling device. The cooling device comprises a cooling impeller arranged on the rotor, Exchange tank, inlet pipe and return pipe. In operation, the cooling impeller and the rotor synchronous operation, so the coolant from the inlet pipe to the stator around, and then through the return pipe and then flow to the cooling impeller inlet, cooling fluid circulation, so that the energy generated by the motor through cooling Liquid into the heat exchange tank, and through the main impeller to the transmission of sewage medium.
This cooling method is more direct cooling and jacketed sewage cooling method has been greatly improved, but there are still some of the following questions:
1, the heat exchange tank by the groove and the body is evenly distributed on the radiator, heat dissipation area is small, the cooling effect is not sufficient, while the heat sink casting, sand inconvenient.
2, the heat exchange channel cooling fins on the formation of the coolant channel does not meet the flow pattern, in particular the cooling fluid from the return pipe into the heat exchange tank, so that a sudden increase in cross-section, resulting in large hydraulic losses, affecting the normal use of cooling impeller, Pump running smoothly.
3, the heat exchange between the groove and the pump impeller with the general radial, sludge and fiber easily stacked in the mechanical seal area, winding, resulting in mechanical seal damage and motor leakage.
The above shortcomings and the current submersible sewage pump technology inseparable, but the invention of new technology will certainly be a good solution to this problem.
Submersible sewage pump
The submerged sewage pump includes a pump body, a stator in the pump body and a rotor in the middle of the stator. The inner periphery of the pump body is provided with a cooling device. The cooling device comprises a cooling impeller arranged on the rotor, Exchange tank, inlet pipe and return pipe. In operation, the cooling impeller and the rotor synchronous operation, so the coolant from the inlet pipe to the stator around, and then through the return pipe and then flow to the cooling impeller inlet, cooling fluid circulation, so that the energy generated by the motor through cooling Liquid into the heat exchange tank, and through the main impeller to the transmission of sewage medium.
This cooling method is more direct cooling and jacketed sewage cooling method has been greatly improved, but there are still some of the following questions:
1, the heat exchange tank by the groove and the body is evenly distributed on the radiator, heat dissipation area is small, the cooling effect is not sufficient, while the heat sink casting, sand inconvenient.
2, the heat exchange channel cooling fins on the formation of the coolant channel does not meet the flow pattern, in particular the cooling fluid from the return pipe into the heat exchange tank, so that a sudden increase in cross-section, resulting in large hydraulic losses, affecting the normal use of cooling impeller, Pump running smoothly.
3, the heat exchange between the groove and the pump impeller with the general radial, sludge and fiber easily stacked in the mechanical seal area, winding, resulting in mechanical seal damage and motor leakage.
The above shortcomings and the current submersible sewage pump technology inseparable, but the invention of new technology will certainly be a good solution to this problem.
Manufacturers recommend: Shenlong stainless steel sewage pump
Keywords:Submersible sewage pump, sewage treatment, technical defects
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