It is successfully developed based on the digestion and absorption of advanced technologies and experiences related to sewage pumps and hot water pumps at home and abroad. It overcomes the limitations of the working temperature of submersible sewage pumps, greatly improves the temperature rise limit of submersible sewage pumps, and has high efficiency, high temperature resistance, and long continuous operation time under high temperature conditions. It has many advantages such as high efficiency, reliability, and easy mobility in the discharge of heating wastewater, smelting wastewater, and chemical wastewater.
1、 Usage and characteristics:
RQWThe heat-resistant submersible sewage pump is mainly used for the discharge of heating wastewater, smelting wastewater, and chemical wastewater in municipal engineering, industry, hospitals, heating and other industries.
RQWThe heat-resistant submersible sewage pump has a small volume, compact structure, high efficiency, and strong adaptability. The water pump's output is carried away by the motor housing, which takes away most of the motor's heat, making its working performance stable and reliable. It can also automatically control the water level according to user requirements, greatly reducing labor load.
2、 Usage conditions:
1The water temperature does not exceed120℃, the working temperature inside the motor chamber shall not exceed220℃.
2The concentration of the medium being pumped is less than40%.
3The working voltage is380Fu,50Hertz.
3、 Model Description:
Example:80 RQW 50—10 -- 3The meaning represented in the model:
80————Outlet diameter
RQW————Heat resistant submersible sewage pump
50————Traffic volume50m3/h
10________lift10m
3_______Motor Power3kw

5、 Performance parameters:
Model Flow
M3/hlift
mpower
kwrotational speed
rpmweight
kg
50RQW10-10-0.75 10 10 0.75 2840 25
50 RQW 12-15-1.1 12 15 1.1 2840 25
50 RQW 15-15-1.5 15 15 1.5 2840 30
50 RQW 18-15-1.5 18 15 1.5 2840 30
50 RQW 25-10-1.5 25 10 1.5 2840 30
50 RQW 15-22-2.2 15 22 2.2 2840 35
50 RQW 20-15-2.2 20 15 2.2 2840 35
50 RQW 25-15-2.2 25 15 2.2 2840 35
50 RQW 42-9-2.2 42 9 2.2 1420 60
80 RQW 37-7-2.2 37 7 2.2 1420 60
50 RQW 15-25-3 15 25 3 2840 58
50 RQW 40-12-3 40 12 3 1420 66
80 RQW 50-10-3 50 10 3 1420 66
80 RQW 43-13-3 43 13 3 1420 70
80 RQW 70-7-3 70 7 3 1420 66
50 RQW 24-20-4 24 20 4 1440 90
50 RQW 30-16-4 30 16 4 1440 90
50 RQW 40-15-4 40 15 4 1440 90
80 RQW 60-13-4 60 13 4 1440 90
100 RQW 70-10-4 70 10 4 1440 100
100 RQW 100-7-4 100 7 4 1440 100
65RQW15-40-5.5 15 40 5.5 1440 110
65RQW10-50-5.5 10 50 5.5 1440 110
50 RQW 25-30-5.5 25 30 5.5 1440 110
80 RQW 70-12-5.5 70 12 5.5 1440 110
80 RQW 30-22-5.5 30 22 5.5 1440 110
100 RQW 65-15-5.5 65 15 5.5 1440 110
100 RQW 120-10-5.5 120 10 5.5 1440 110
150 RQW 140-7-5.5 140 7 5.5 1440 120
50 RQW 40-30-7.5 40 30 7.5 2910 150
80 RQW 50-22-7.5 50 22 7.5 1440 150
100 RQW 100-10-7.5 100 10 7.5 1440 150
150 RQW 145-10-7.5 145 10 7.5 1440 180
150 RQW 210-7-7.5 210 7 7.5 1440 180
100 RQW 80-20-11 80 20 11 1460 250
100 RQW 50-35-11 50 35 11 2930 250
100 RQW 70-22-11 70 22 11 1460 250
100 RQW 110-15-11 110 15 11 1460 300
200 RQW 300-7-11 300 7 11 1460 350
100 RQW 87-28-15 87 28 15 1460 350
100 RQW 100-22-15 100 22 15 1460 350
150 RQW 140-18-15 140 18 15 1460 380
200 RQW 150-15-15 150 15 15 1460 380
150 RQW 200-10-15 200 10 15 1460 380
200 RQW 400-7-15 400 7 15 1460 400
150 RQW 70-40-18.5 70 40 18.5 1470 430
200RQW250-15-18.5 250 15 18.5 1470 450
200RQW300-10-18.5 300 10 18.5 1470 450
150RQW130-30-22 130 30 22 1470 500
150RQW150-22-22 150 22 22 1470 500
200RQW400-10-22 400 10 22 1470 500
200RQW250-15-22 250 15 22 1470 500
6、 Structure description:
The main components are the motor, oil chamber, mechanical seal, over cut heat protector, pump body, impeller, front cover, bracket, etc. The impeller has two functions: discharging and crushing. A triangular fixed knife is installed at the inlet of the front cover, and weeds and fibers are crushed and discharged under the high-speed rotation of the impeller. The effluent passes through the motor housing and carries away the heat of the motor.

7、 Usage:
1, Use50Hertz380The three-phase power supply and pump cable have a black or yellow green alternating wire as the grounding wire, which must be well grounded before use. During use, special attention should be paid to protecting the cables in order to improve the service life of the pump.
2For safety reasons, if the pump is used in a manned workplace, it must be equipped with a leakage protector.
3Before diving into the water, it is necessary to first test the forward and reverse rotation of the power supply, confirm that the direction of rotation is consistent with the direction indicated on the sign, and then put it into the water. Because the pump can drain water in both forward and reverse directions, but the motor is overloaded during reverse operation, it cannot be used in reverse.
4If the pump suddenly fails to supply water during operation, it may be due to a blown fuse, single operation, or the activation of the non burning protector in the motor, which disconnects the power supply. At this time, the power should be turned off in a timely manner for inspection.
5The pump can be used both vertically and horizontally. It must be submerged in water to work continuously. If the water level is shallow, it can be used intermittently and checked in a timely manner. The casing should not overheat.
6The motor equipped with this pump is air type, and no oil or water is added to the motor chamber. For safety reasons, users should not disassemble or assemble it arbitrarily. If necessary, contact the manufacturer for maintenance.
8、 Maintenance and upkeep:
1In order to extend the service life, electric pumps may encounter malfunctions during operation or operate for a long time2500An inspection must be conducted after hours, and the procedure is as follows:
1Inspection of pump head
Remove the pump bracket and front pump cover, unscrew the impeller nut, take out the impeller, inspect the impeller, pump shaft, pump body, observe wear and corrosion, and determine if it can still be used.
2Motor inspection
ARemove the oil chamber plug, drain the internal oil, unscrew the oil chamber connecting nut, gently remove the oil chamber along the axis, and do not use a heavy hammer to strike.
BThere are two sets of mechanical seals installed in the oil chamber, one is made of hard alloy and the other is made of graphite ceramic. Check their wear and sealing condition.
COpen the motor cover, check if the cable joint is loose, check if the non burning protector joint is loose, remove the partition, slowly pull out the rotor, check the bearing wear, and add high temperature lubricating greaseZN6-4
DAfter all inspections are completed, the motor oil chamber should be assembled in the reverse order of disassembly, ensuring the tightness of the mechanical seal and sealing ring.
EAfter assembly, the motor rotor should rotate flexibly, and then inflate the oil chamber plug for air pressure testing0.2MpaOne minute, observe the seam and there is no air leakage on the appearance.
FFill the oil chamber with oil10Mechanical oil, the quantity is based on the volume of the oil chamber80%.
GWhen tightening the plug, wrap it with sealing tape to ensure tightness.
9、 Fault causes and troubleshooting methods:
Troubleshooting methods for fault phenomena and causes
Without water or
Insufficient water output1The water inlet is blocked by debris
2The outlet pipe is blocked by sludge
3The impeller falls off
4Motor reversal
5Excessive sludge concentration1Move the pump body and remove debris
2Remove the water outlet pipe and rinse with clean water
3Tighten the impeller nut
4Swap the wire ends
5Dilute and discharge with water

The motor does not rotate
perhaps
Excessive current
1Motor phase loss
2The motor winding is burnt out
3Voltage too low
4Motor stator rotor phase rubbing
5Excessive sludge concentration
6The impeller is wrapped in long fibers
7The burn free protector is malfunctioning1Check the power supply, switch fuses
2Replace the motor winding
3Adjust the voltage or disable it
4Check and replace bearings
5Dilute with water
6Remove debris from the impeller
7Do not use or replace
operate
Unstable1Motor reversal
2The impeller is corroded and eccentric
3There are large particles in the sewage1Swap the wire ends
2Replace the impeller
3Move the water pump or remove large particles

Manufacturing Hotline: 0634-6588011 QQ: 2659709581