Based on the absorption of advanced technology and experience related to sewage pumps and hot water pumps at home and abroad, this product has been successfully developed, overcoming the limitations of the working temperature of submersible sewage pumps and greatly improving the temperature rise limit of submersible sewage pumps. It 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


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. Manufacturing Hotline: 0634-6588011 QQ: 2659709581