CNP Canned Motor Centrifugal Chemical Pump

Canned motor pump is composed of a shielded electric motor and a pump.

It is a power equipment used for conveying fluids.

The equipment is mainly composed of pump body, impeller, stator, rotor, front and
rear bearings, thrust disc and other components.

The stator and rotor are separated by non-magnetic corrosion-resistant thin-walled
sleeves, and the rotor is supported by front and rear bearings immersed in the
conveying medium, so no type of dynamic seal is required to prevent the outward
leakage of the conveyed medium.

Overall, shielded pumps are centrifugal unsealed pumps.

Shielded pumps are absolutely leak free, and under negative pressure inside the
pump, external gases will not be sucked in, making them particularly suitable for
vacuum system operation; At the same time, it is suitable for high pressure, high
melting point, and high and low temperature media.

Shielded pump has a compact structure, small volume, and light weight; No cooling
fan, low noise, wide range of use, reliable operation, can provide a relatively
good working environment.

A typical shielded pump uses a portion of the conveyed liquid to cool the motor,
and the annular gap is very small, so the conveyed liquid must be clean.

When transporting multiple liquid mixtures, if they produce precipitation, coking,
or gel like substances, using a shielded pump (non mud type) at this time may block
the shielding gap, affect the cooling and lubrication of the pump, and lead to
burning of graphite bearings and motors.

Shielded pumps generally have circulating cooling pipes.

When the ambient temperature is below the freezing point of the pumped liquid, anti
freezing measures such as accompanying pipes should be taken to ensure easy pump
start-up.

In addition, when starting the shielded pump, the opening sequence of the outlet
valve and the inlet valve should be strictly followed.

When stopping the pump, the outlet valve should be closed first.

After the pump stops running, the inlet valve should be closed first and then the
outlet valve should be closed.

In short, by using a shielded pump, there is no leakage at all, effectively
avoiding environmental pollution and material loss.

As long as the selection is correct and the operating conditions do not change
abnormally, there is almost no maintenance workload under normal operation.

Shielded pumps are ideal pumps for transporting flammable, explosive, corrosive,
and valuable liquids

According to the temperature, pressure, viscosity, and presence of particles of the
transported liquid, shielded pumps can be divided into the following types.

The temperature of the basic conveying medium shall not exceed 120 ° C, and the
head shall not exceed 150m.

Various other types of shielded pumps can be obtained by modifying and improving
the basic model.

In this type of shielded pump, the direction of liquid flow for bearing
lubrication, cooling, and motor cooling is exactly opposite to that of the basic
type.

Its main feature is that it is not prone to cavitation and is particularly suitable
for the transportation of easily vaporized liquids, such as liquefied petroleum
gas, chloromethane, etc.

High temperature type generally transports media with a maximum temperature of 350
° C, a maximum flow rate of 300m3/h, and a maximum head of 115m, suitable for
high-temperature liquids such as oil and hot water.

High melting point pumps and motors with jackets can significantly improve the heat
resistance of the motor.

Suitable for high melting point liquids, with a maximum temperature of 250 ° C.

The jacket can be filled with steam or liquid at a certain temperature to prevent
crystallization of high melting point liquids.

The casing of a high-pressure shielded pump is a high-pressure vessel, which
enables multi-stage pipeline pumps to withstand high system pressures.

To support the shielding sleeve under high internal pressure, the stator coil can
be used to withstand pressure.

When the self-priming suction tube is not filled with liquid, the pump discharges
the liquid through automatic pumping, which is suitable for extracting liquid from
underground containers.

The multi-stage type is equipped with multiple impellers, suitable for high head
fluid transportation, with a maximum head of up to 400m.

Mud type is suitable for transporting liquids mixed with large amounts of mud

Minimum Order: 1 sets

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