High concentration sludge pump

NegotiableUpdate on 03/16

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Nature of the Manufacturer: Producers

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Overview

High concentration sludge pump

Product Details

Details

structural characteristics

1. Cable inlet sealing

The cable inlet seal is a complete component with a fixed plate. The cable entrance must strictly ensure waterproofing and submersible sealing.

2. Motor

Three phase squirrel cage induction motor, shell design, filled with air inside the shell, can be started directly. The motor can continuously stir the medium at 40 ℃, with a maximum starting frequency of 15 times per hour and uniform intervals between each start.

The motor is designed to provide its rated output within a range of ± 5% variation in rated voltage. A rated voltage error of ± 10% is also acceptable as long as the motor does not reach full load continuous operation without overheating. The allowable phase to phase voltage imbalance of the motor is within 2%. The stator is cooled by the surrounding liquid. Connect the thermal switch and optional protection sensor with a cable diameter greater than 1.5mm2, and the cable sheath is resistant to sewage corrosion.

3. Mechanical seal

The mixer is equipped with two independent mechanical seal systems. The seal operates in the oil chamber, using liquid power to spray oil at a constant speed onto the sealing surface to generate lubrication. The external sealing component is located between the stirring liquid and the oil chamber, and includes a stable and forward driven rotating tungsten carbide ring. The internal secondary seal is located between the oil chamber and the motor housing, and includes a stable tungsten carbide ring and a forward driven rotating tungsten carbide ring. Only the outer sealing surface comes into contact with the stirring medium. Each sealed interface is clamped with a spring system. Sealing requires neither maintenance nor sealing adjustment, nor does it require sealing rotation direction. Fill the oil chamber with paraffin type white oil, which does not contain aromatic hydrocarbons.

4. Bearing

The impeller shaft and motor shaft are integrated, and the motor internal bearings are two fully enclosed deep groove ball bearings. The main bearings are single row self-aligning roller bearings to bear axial loads, and the service life of the bearings is not less than 100000 hours.

5、油室

Oil lubricates and cools the seal, and provides an additional barrier against penetrating liquids. The pressure accumulated in the oil chamber is reduced by an internal volume of space.

6. Impeller

The impeller is a three piece design with large blade width, thin side profile, smooth surface, and a swept back design. It has self-cleaning function to ensure efficient and unobstructed operation of the agitator.

7. Protection

(1) In all motors, each phase winding is connected to a thermal switch in series. When the thermal switch opens at 125 ℃, the motor stops rotating and an alarm is triggered.

(2) There is a humidity sensor installed in the motor room, which provides a motor temperature and humidity over limit alarm monitoring protector for each sludge reflux pump. When the temperature and humidity exceed the limit, the control circuit immediately stops the sludge reflux pump to protect the motor, and the alarm monitor is set on the electrical control cabinet.

8. Leaf wheel shaft

The impeller shaft and the motor shaft are the same shaft, ensuring smooth and efficient operation of the motor.

9. Cooling system

The motor can be fully cooled by the surrounding stirred liquid.

10. Main component materials

Motor shell HT250 anti-corrosion

Impeller shaft 2Crl3

High quality stainless steel impeller

High quality stainless steel connecting accessories such as screws, bolts, nuts, etc

High quality stainless steel guide rod and bracket

O-ring nitrile rubber

Mechanical seal silicon carbide tungsten carbide

11. Electric control cabinet and electrical control

The electrical control cabinet has a complete power distribution system and protection and measurement equipment, and is equipped with on-site on/off switch for each sludge reflux pump. The electrical control cabinet is located in the open environment on site, with a protection level of IP55, and can effectively defend against the erosion and corrosion of gases and water vapor emitted from sewage. The shell material of the electrical control cabinet is stainless steel.

The electric control cabinet can display the current and voltage of the incoming power supply, as well as the temperature and humidity limit alarm signals of each sludge reflux pump and the equipment operation status on the panel of the electric control cabinet. The electric control cabinet realizes overload, overheating, phase loss, short circuit protection, and automatic shutdown in case of faults. The starting device of the motor includes a circuit breaker, a contactor, and a thermal relay.

The electrical control cabinet is equipped with PLC input and output interfaces. PLC output: on/off; PLC input: quasi operation, fault signal. The electrical control cabinet has sufficient terminals for connecting power cables and control cables.