Overview

The ZJQ submersible slurry pump has been comprehensively optimized and innovatively designed in terms of hydraulic model, sealing technology, mechanical structure, protection and control. This product has a simple structure, easy installation, safe and reliable use, and long service life. Pump submerged underwater without the need
Constructing complex ground pump rooms and fixed installations, with no noise or vibration, making the site cleaner.

Main purpose

This product is suitable for conveying slurry containing abrasive particles such as sand and gravel, coal slag, and tailings. It is mainly used in industries such as metallurgy, mining, power, chemical, environmental protection, river dredging, sand extraction, and municipal engineering. This product is easy to install and move, with high slag extraction efficiency, and can operate safely for a long time under harsh working conditions. It is a replacement for traditional vertical submersible pumps and submersible sewage pumps
Think about the product.

Conditions of Use

1. Power supply 380V, three-phase, 50HZ (customized voltage and frequency according to requirements);
2. The temperature of the medium generally does not exceed 60 ℃, the pH value is 4-10, and the density of the medium is ≤ 1300kg/m ³;
3. Suitable for media with strong abrasive solid particles and mildly corrosive sewage slurry;
4. The diameter of solid matter in the medium shall not exceed 80% of the minimum flow channel size of the pump.
 

Product Structure Description

1. Signal line 2. Motor wiring 3. Junction box 4. Motor cover 5. Bearings 6. Upper shaft seat 7. Motor casing 8. Stator 9. Shaft (rotor) 10. Bearings 11. Oil water probe 12. Oil chamber 13. Mechanical seal 14. Protective board 15. Water outlet pipe 16. Bracket 17. Pump body 18. Impeller 19. Base filter screen 20. Mixing wheel

Structural description

1. Pump body impeller
Based on actual testing, carefully select and match the pump body and impeller. The impeller of the pump body is made of high chromium wear-resistant and corrosion-resistant materials
Material, good overcurrent performance, high efficiency, flat power curve, not easily overloaded, precise impeller balance, low vibration operation
Smooth transition.
2. Mixing wheel
The mixing wheel is located at the bottom of the pump, which can stir the sediment settled at the bottom of the water into turbulence and extract it, collecting water and stirring
Mixing, blowing sand, and extracting sand in one, with high sand absorption efficiency and more thorough dredging.
3. Motor
Specially designed submersible motor, IPX8 protection, F-class insulation allows for temperature rise. Under normal temperature rise conditions, the motor
Long insulation life, good diving cooling effect, low actual temperature rise, and longer insulation life of the motor.
4. Motor cooling
The motor generates heat through the casing, and as long as the medium submerges the motor stator casing, it can operate reliably and safely
The more, the more effective the use of motor cooling.
5. Shaft seal
The motor shaft seal adopts two independent series connected mechanical seals, forming two reliable sealing lines. The first passage is in the medium inside the pump, and the sealing surface is pressed tighter with the increase of medium pressure, effectively preventing water from entering the oil chamber. The second passage is in the oil chamber, preventing oil from entering the motor. If the first passage fails (its working conditions are worse than the second passage), the second passage can still prevent water from entering the motor
Stop oil and water from entering the motor. The corrugated tube type machine seal combined with innovative structural cavity greatly improves the reliability of the shaft seal
Under normal usage, the fault free running time exceeds 8000 hours.
6. Oil chamber
The oil chamber is a barrier that prevents the medium from entering the motor from the pump shaft, preventing the medium from penetrating into the electrodes. If the first seal leaks, the buffer medium in the oil chamber cannot directly enter the motor. Simultaneously lubricate and cool the friction surfaces of two independent machine seals
To make the sealing work more reliable, it can also take away the heat generated by the lower bearings and some of the heat generated by the motor.
7. Bearing
The lower double row angular contact bearing has strong load-bearing capacity and, together with the upper deep groove bearing, forms a reliable support for the motor water pump shaft. It has a large bearing margin for the radial, axial, and other forces generated during the operation of the sewage pump, ensuring the stability of the unit
Operation and long lifespan
8. Cable and its sealing
1) The cable is a heavy-duty rubber sheathed flexible cable that is resistant to sewage. The cross-sectional area of the cable core is designed for long-term reliable operation at an ambient temperature of 40 ℃ and full load power of the motor. If the sewage pump is working, the motor will operate at non full load power or below 40 ℃ in the environment
Okay, the service life will be longer.
2) There is a sealed compression between the cable rubber sleeve and the motor cover to prevent the medium from seeping into the interface between the cable and the motor cover
Internal cavity of the machine.
3) There is rubber vulcanization between the cable sheath and the core, which can effectively prevent the medium from coming out of the cable sheath once the rubber sheath is scratched
Enter the motor internally.
9. Motor casing
The motor housing is composed of the casing, upper end cover, and pressure cover, and reliable static seals are provided at the connection and fitting points of each component
All have undergone strict hydrostatic testing to ensure that there is no leakage and there is no risk of failure.
10. Internal safety protection of the pump (activated through a dedicated electrical control cabinet)
1) Oil water probe: installed in the oil chamber to detect the leakage of the first mechanical seal (in the medium). When the medium leaks
When reaching a certain proportion in the oil chamber, an alarm signal will be issued.
2) Float switch: installed in the motor chamber to detect the leakage of the second seal, when oil (oil-water mixture) enters
The motor and float switch will send an alarm signal and stop the pump.
3) Thermistor: Installed inside the stator winding of the motor, if the motor is overloaded for a long time, the temperature of the motor winding (or other factors) will be affected
When the heating of the motor winding reaches a certain value, an alarm signal is issued and the pump is stopped.

11. External control system
The supporting dedicated electrical control cabinet can process various signals inside the pump, achieving functions such as control, protection, sound and light alarm, etc
Capable of various automation controls with single and multiple pumps.
When users bring their own electrical control cabinets, they should contact our company's electrical control cabinet professional team to guide users in installing them inside the cabinets
Install a protective controller.
12. Optional equipment
Forced cooling system. Install a metal sleeve on the motor casing to introduce cooling water circulation and achieve forced cooling. 13. Performance curve and main parameters
The actual part of the curve on the performance curve graph represents the recommended range of use for the pump. The shaft power of the pump increases with the increase of flow rate. If the flow rate of the pump exceeds the rated flow limit, the shaft power will exceed the rated power of the motor. When the medium temperature is high or the motor cannot be sufficiently cooled, the motor cannot work for a long time; If the flow rate is less than the rated flow limit, the shaft power of the pump is much lower than the rated power of the motor, and the efficiency of the unit is very low. It is not advisable to use a pump under such working conditions
Economically.