WQ Series Submersible Sewage Pump(30Kw)

WQ series submersible sewage pump is primarily used for municipal engineering, buildings, industrial discharges and sewage treatmentto discharge sewage, waste water and rainwater containing solid matters and continuous fibers.

1. IOT water pump, smart control cabinet, cloud remote monitoring

The water pump has a built-in intelligent digital acquisition module (KQCJ01), which collects operating data such as winding temperature, bearing temperature, oil chamber leakage, motor cavity leakage, junction box cavity leakage and water pump vibration values in real time. Fully monitor the operation of the water pump, and can perform real-time data display, alarm or shutdown automatic operation through the smart control cabinet. At the same time, you can log in to the Shanghai Kaiquan Smart Cloud remote monitoring and operation and maintenance platform to perform monitoring and operation and maintenance operations.

2. Unique no-overload water design, innovative sewage treatment pump technology

Innovative high-efficiency non-overload water model design concept, while taking into account the passing capacity of the sewage pump. Completely eliminates worries about water pump operation.

Technical characteristics of the overload-free water model: the maximum power point appears in the high-efficiency zone, and the operation is smooth and vibration-free.

Impeller passing ability: The impeller has undergone extensive CFD research, analysis and testing to achieve the best balance between the impeller blades and the solid passing ability. The unique design of the flow-passing parts ensures the passing of solid objects and the anti-entanglement of fibers.

3. Unique water pump seal design ensures long-term reliable operation of the water pump

In addition to the cable seal at the motor outlet, the internal lead wires have an extra lead wire seal at the upper end cover of the motor, and two cable seals to ensure that water does not enter the stator cavity and burn the motor.

4. Mechanical seal self-cleaning technology

Two single-end mechanical seals are installed in series, and special spiral grooves or small gaps are used at the pump cover to prevent solid particles from depositing to the mechanical seal on the pump side, so as to achieve the self-cleaning function of the mechanical seal and extend the service life of the mechanical seal.

5. Short shaft extension design

The short shaft extension design can significantly eliminate shaft eccentricity errors. Reduce the center of gravity of the water pump, reduce the vibration of the water pump operation, and extend the life of the mechanical seal and bearings.

6.Submersible motor reliability design

The motor insulation grade is H grade, with a maximum allowable temperature of 180°C, which is a qualitative improvement over F grade. The motor can withstand higher temperatures and is more durable. The dynamic seal adopts Shanghai Borgmann mechanical seal, and the pump head mechanical seal is made of silicon carbide versus tungsten carbide, which provides the greatest anti-wear capability. The mechanical seal is designed to have a service life of 15,000 hours. The bearings are designed with a minimum service life of 100,000 hours to ensure normal operation of the water pump.

7.Universal water pump installation design

The installation methods are diverse, including automatic coupling installation. The pump and the outlet pipe are connected through the outlet pipe holder of the coupling device. Conventional fasteners are not used. When the pump and the outlet pipe holder are connected and disconnected, only The pump must be simply lowered and lifted along the guide rod, which saves worry, trouble and time.

Pump body ,impeller

It adopts CFD technology to optimize the design, adopts a wide outlet high-efficiency non-overload impeller, and has the best balance between non-overload water design and high throughput capacity. The flow channel is wide and the dirt passing ability is the best. The impeller undergoes rigorous dynamic balancing testing to minimize vibration and maximize the life of the bearings and mechanical seals.

Pump cover

Designed with self-cleaning technology, the pump cover has an annular spiral groove structure. When the medium particles rotate at the pump cover, they are thrown outward by centrifugal force.

It can avoid the accumulation of particles in the seal cavity to achieve the self-cleaning effect of the mechanical seal.

Motor

The specially designed and manufactured underwater motor has a protection level of IP68, the stator winding is H-class insulation, and the ultimate working temperature of the insulating material is 180°C.At the same time, the winding temperature measurement PT100 is embedded in the winding to protect the motor through the electric control cabinet.

Motor cooling

The motor is cooled by the pumped medium through the heat sink on the stator housing. The medium needs to submerge the motor, and the lowest pump stop position should not be lower than the liquid level marked “▽” in the installation dimension diagram.

The electric pump can be specially equipped with a motor cooling system to cool the motor. The cooling medium flows between the stator housing and the cooling sleeve. The cooling medium can be the pumped medium or external cooling water. The cooling channels used for cooling by pumped media and cooling by external cooling water are different. Therefore, when users want to install a cooling system, they should indicate in the order whether cooling by pumped media or external cooling water is used. When the cooling medium is the pumped medium, the structure of the pump prevents large particles from entering the cooling channels. After long-term operation, small particles may accumulate in the sleeve, which can be flushed by external flushing fluid through the pipe joint on the cooling sleeve.

Machinery Seal

Burgman mechanical seal is adopted. The mechanical seal uses friction material with low friction coefficient and wear resistance. The rubber parts are oil-resistant nitrile rubber and the metal parts are stainless steel. The medium side mechanical seal adopts silicon carbide/tungsten carbide pairing, combined with the self-cleaning mechanical seal technology of the spiral structure of the pump cover. The mechanical seal is designed to have a service life of 15,000 hours.

Oil room

The oil in the oil chamber is made of 32# anti-wear hydraulic oil. The implementation standard is: GB11118.1-2011. In addition to lubricating the mechanical seal, it can also take away the heat from the bearing. The oil chamber also has an additional safety function of preventing liquid penetration. . A water leakage probe is installed in the oil chamber. When the medium on the pump side leaks into the oil chamber, the water leakage probe will alarm and stop the pump through the electric control cabinet to remind the operator for maintenance.

The amount of refueling should be based on the oil overflowing from the oil filling hole, and it should ensure that there is a certain volume of air left in the oil chamber so that the pressure in the oil chamber will not rise significantly when the oil temperature rises, thereby avoiding excessive wear or leakage of the mechanical seal.

Bearing

The entire series uses original imported SKF bearings as standard. The upper bearing is a deep groove ball bearing or a cylindrical roller bearing, which is used to withstand radial force. The lower bearing is used to bear radial force and axial force. Each model of pump has different sizes according to the radial force and axial force. Some are designed as a double row angular contact ball bearing, and some are designed as a pair of angular contact balls. The bearing plus a cylindrical roller bearing have sufficient load margin. The bearing is designed to have a service life of 100,000 hours and is lubricated with 3# lithium-based grease.

Cable/motor sealing

The cable is made of heavy-duty rubber-sheathed flexible cable that is resistant to pollution and has excellent mechanical strength and oil resistance. The cable conductor cross-sectional area and current-carrying capacity are selected based on the ambient temperature of 40°C and long-term continuous operation. Therefore, under normal usage conditions, the cable’s current-carrying capacity has sufficient margin , longer life.

The cable gland presses the cable sealing ring to achieve reliable sealing between the cable and the wiring cavity. Secure the cable to prevent it from pulling out. Cables use color markings and digital markings to make cable identification and connection easier. The motor wiring cavity and the electric control cabinet are equipped with grounding signs and grounding fasteners, and the cables are strictly grounded for safety and reliability.

During the assembly process, strict sealing testing tests are conducted on the wiring cavity, motor cavity, and oil chamber cavity of each pump to ensure that the motor cavity, including the wiring cavity and the oil chamber cavity, are reliably sealed.

Smart collection system

The water pump comes standard with an intelligent digital acquisition module that collects motor winding temperature rise, bearing temperature rise, water pump vibration values, motor cavity leakage, oil chamber leakage and junction box cavity leakage. At the same time, it is equipped with a smart control cabinet. The smart control cabinet is equipped with an early warning communication controller to realize real-time display monitoring and fault warning of the water pump status. When users prepare their own electric control cabinet, a signal acquisition box is required.

Description of protective devices

Platinum thermal resistance PT100

The platinum thermal resistor PT100 is installed in two locations in the water pump. One is embedded in the motor stator winding, and the other is installed in the bearing. The display screen of the electric control cabinet displays real-time data. When the water pump is operating abnormally and the winding temperature or bearing temperature rises to the set value, the “winding overheat” or “bearing overheat” indicator light of the control cabinet lights up. It will automatically stop the motor and remind the operator to check and find out the cause of motor overheating.

When the fault temperature drops, the motor will return to the start-up state.

Leak probe

The water leakage probe is used for water inlet detection in the oil chamber and motor cavity.

The water leakage probe in the oil chamber is referred to as the oil probe. When the mechanical seal on the impeller side is damaged and the water in the leaking oil chamber reaches a certain level, the two electrodes of the water leakage probe are connected and an alarm signal is sent through the electric control cabinet (the indicator light is on).Remind the operator to promptly check the mechanical seal or replace the oil in the oil chamber.

The water leakage probe in the motor cavity is referred to as the water probe. It is installed in the cavity on the lower side of the motor cavity and next to the bearing. The cavity has a hole communicating with the bearing chamber. When the mechanical seal on the motor side fails, the oil in the oil chamber enters the cavity through the bearing chamber, or the water entering the motor flows into the cavity, which will cause the two electrodes of the leakage probe to conduct, and an alarm signal will be sent through the electric control cabinet ( The indicator light lights up) and the pump automatically stops running, reminding the operator to inspect the pump.

Lifting device

The lifting frame of the pump is made of 304 material and is designed with a larger space for convenient hooks, making it easy to lift and durable.

Model Description

The last two or three digits in the impeller number are the sequence number, and the first number represents the motor stage. For example: “4” in 4141A represents the 4-stage motor, 141 is the sequence number, and A and B after the number represent Indicates cutting impeller. For example, the “10” in 1054 means a 10-level motor, and 54 is the sequence number.

Rated voltage, rated frequency:Rated voltage and rated frequency of the motor are 380V and 50Hz respectively

Wiring method

How to connect the motor winding lead wires:

The triangular (△) connection method is used for 55kW and below. When the pump leaves the factory, the wiring cavity has been connected accordingly. Direct start, auto-coupling step-down start or external electronic soft starter can be used according to the site conditions.

For 75kW and above, the six lead wires of the winding are directly connected to each other with the six power cores in the two main cables. The outer three corners (△) connection method is used to connect the windings, which is suitable for auto-coupling step-down starting or external connection method. The electronic soft starter starts. You can also connect the 6 power wire cores to the 6 copper bars of the control cabinet.

Applicable to Samsung startup.

Rotation direction

Viewed from the pump inlet, the impeller rotates counterclockwise.

Description of performance curves and main parameters

The solid line part of the curve on the graph indicates the recommended usage range of the pump. Once the shaft power increases to a certain value, it will no longer increase. Non-overload pumps generally have no danger of overloading. Even if there is an occasional overload, there is a limit. Therefore, the motor of such a pump is safe when used at any flow rate. However, it is best to use it within the recommended range, because within the recommended range the pump is more efficient and the pump is more economical.When the flow rate is less than the left limit, the unit efficiency is very low and a large radial force is generated, resulting in rolling keys and broken shafts. When the flow rate is greater than the limit on the right, the pump will produce vibration, noise and other problems.

For the maximum size of solid objects, refer to the “WQ (30kW and above) IoT Smart Submersible Sewage Pump Performance Parameter Table”.

The pump weight does not include accessories for various installation methods, such as coupling devices, bases, elbow joints, hose elbow joints, etc.

1. All guide rod frames can be fixed with M16×150 Type I expansion bolts. Expansion bolts are easy to purchase. You can prepare them yourself or order them from our company. The function of the rubber column on the guide rod frame: tightening the adjusting bolt of the rubber column can make the rubber column tighten the inner hole of the guide rod, stabilize the guide rod, and prevent the guide rod from vibrating and making noise.
2. The length of the guide rod should be calculated according to the “pool depth” shown in the figure. For information about guide rods, see Appendix 1.
3. There is no pump coupling installation with inlet horn pipe. The bottom of the pool should be made flat. The height of the outlet pipe seat can ensure that the pump suction port has sufficient height to the bottom of the pool, so that the pump has good suction conditions. ,

Therefore, there is no need to make a concrete boss for the water pipe seat, which can save the trouble in construction. For a pump coupling installation with a water inlet horn pipe, in order to ensure that the horn pipe has sufficient height to the bottom of the pool, a concrete boss with a certain strength should be made for the outlet pipe seat.

What we give in the installation dimensions of each pump is the minimum height of the boss.

4. ▽ represents the lowest liquid level at which the water pump operates. The operating liquid level of the water pump should be higher than the minimum liquid level. If possible, it is best to completely submerge the pump so that the motor can be fully cooled. The minimum liquid level can be controlled with a float switch. Our company’s special electric control cabinets for submersible sewage pumps are all liquid level control types and are equipped with a certain number of float switches.
5. For mobile installation pumps, hose elbow joints or elbow joints are provided by our company. When the hose is installed in a mobile manner, the inner diameter of the applicable hose for pumps of various diameters is shown in Appendix 2.
6. For pumps of the same model, the fixed base installation and the mobile installation base are the same. The shape and size of the base are as shown in the M-direction view.
7. The flange size represents the discharge flange and outlet flange of the pump. The flange size complies with the GB/T17241.6-2008/XG1-2011 standard.

Appendix 1 Pump guide-bar configuration and dimensions

 Appendix 2 Pump sofe pipe

 Appendix 3 The anchor bolts of automatic coupling installation discharge

Appendix 4 Anchor bolts of fixed base mounting installation

Appendix 5 Weight sheet of coupling parts

KQK-CJX drainage pump smart signal collection box and KQK-B (Z2) series control cabinet selection

Overview

WQ (30kW and above) series submersible sewage pumps have built-in intelligent digital acquisition modules to collect leakage, temperature, vibration and other data.

Cooperating with the on-site drainage pump smart signal collection box or smart control cabinet, real-time display monitoring and fault warning of the water pump status can be achieved.

Through real-time monitoring data, diagnostic engineers regularly browse and analyze it, and promptly achieve comprehensive monitoring coverage of the unit through Kaiquan Smart Cloud Platform operation and maintenance system, real-time SMS push, mobile APP push and other forms.

When an abnormality occurs in the WQ (30kW and above) series submersible sewage pumps, the diagnostic service engineer will analyze the abnormal situation, contact the customer in a timely manner, and conduct in-depth analysis and feedback based on the actual situation on site. With the cooperation of the customer, the diagnostic service engineer will provide abnormal handling opinions and continue to track the abnormal situation until the problem is solved.

According to the unit status data, the life cycle of the unit, fault mechanism, fault scope, etc., experts from different professions and departments are gathered to conduct analysis and diagnosis. Through remote monitoring of WQ (30kW and above) IoT smart submersible sewage pumps, changes in unit status can be sensitively detected, service procedures can be started early and quickly, and scientific service decisions can be provided. Provide users with professional, targeted, scientific and efficient services.

KQK-CJX1-WQ ordinary drainage pump smart signal acquisition box

KQK-CJX2-WQ high-profile drainage pump smart signal acquisition box

When the start-stop control cabinet and the signal acquisition cabinet of the WQ (30kW and above) IoT smart submersible sewage pump are set up independently, the signal acquisition must be used with Kaiquan’s professional drainage pump smart signal acquisition box. KQK-CJX1 (2)-WQ type drainage pump smart signal acquisition box is a high-tech multi-functional status monitoring and protection device specially designed for WQ (30kW and above) IoT submersible sewage pumps. It uses intelligent digital instruments and has incomparable advantages over traditional online monitoring instruments. This terminal box is suitable for online monitoring and protection of Kaiquan submersible smart sewage pumps and other products.

The drainage pump smart signal acquisition box can continuously measure and monitor safety-related process parameters such as water leakage, winding temperature, bearing temperature, and bearing vibration.

A power meter is added as standard to collect electrical parameters, including collecting electrical parameters such as water pump voltage and current. Using this collection terminal, the abnormal status of the water pump can be identified in time to ensure the safe and reliable operation of the equipment. It has important practical significance for understanding the operating status of the unit and early diagnosis of common mechanical fau

Function

1. It adopts Chinese display with backlit color LCD screen, with various display modes such as bar graph, trend curve, numbers, etc.

The screen is rich and intuitive, and can simultaneously display various information such as pump group information, collection time, channel name, sensor status, channel alarm status, etc.

2. It consists of a box frame and various instruments, human-machine interface, programmable controller and communication module. The system can be installed with electrical instruments. The electrical instruments can measure three-phase voltage, current, power, frequency, energy consumption, etc. . The PLC has switching input and output terminals and 4 analog input channels.
3. The setting and configuration are flexible. The range, sensitivity, alarm value, alarm delay time, alarm logic, zero position, etc. of any channel can be set directly by the user through the on-screen Chinese menu, which is convenient and fast.
4. The system has built-in self-check and channel self-check functions to ensure that the relay does not malfunction when the system fails or the sensor line fails.
5. Built-in large-capacity memory card interface with power-off protection ensures sufficient storage space and eliminates the trouble of frequent data backup. Historical data can be easily backed up through USB interfaces and network communication interfaces, which is helpful for establishing equipment documentation and provides powerful analysis methods for accidents.
6. Through the trend analysis, accident recall, statistical analysis and other functions of the cloud platform, the maximum value, minimum value, average value, number of alarms and cumulative alarm time of any channel in a certain period of time can be easily calculated.
7. It can provide very flexible Ethernet, serial connection (RS232/RS485) and USB interfaces. It adopts standard communication protocols and can easily exchange data with other systems to form a remote status monitoring network.
8. Accepts variable input from any other standard signals such as eddy current sensors, speed sensors, acceleration sensors, temperature sensors, pressure transmitters, etc.
9. The drainage pump smart signal acquisition box provides an independent alarm relay output, and the alarm logic and alarm action delay time can be set through software.

This passive contact signal output can be used for alarm and fault shutdown control of water pump control cabinets supplied by third parties.

Technical Parameters

1. Display mode: 7-inch true color touch screen display
2. Measuring range: vibration channel measuring range

Intensity: 0-20mm/s

Temperature: -40-120℃

3. Measurement accuracy: ±0.5 level, linear error ≤1%FS (full scale)
4. Input method: RS485 input signal
5. Output mode: passive contact, load capacity DC24V/2A or AC250V/5A
6. Ambient temperature: -20℃-65℃ (relative humidity: ≤90%)
7. Power supply voltage: AC220V/50Hz±10%
8. Installation method: wall-mounted
9. Overall size: 600×400×200mm (height×width×thickness)

Smart module

Intelligent digital acquisition module (KQCJ01) integrated inside the motor:

Intelligent digital acquisition module Built-in intelligent digital acquisition module; it can collect water pump winding temperature, bearing temperature, oil chamber leakage, motor cavity leakage, junction box leakage and water pump vibration values.

The intelligent digital acquisition module uses an industrial-grade ARM processor, high-precision low-temperature drift component design, high-precision industrial-grade ADC, low leakage and high-reliability tantalum capacitors and solid capacitors. Adopting the most advanced anti-interference design, it can withstand level 4 EMC interference. Water leakage in the oil chamber, water leakage in the motor cavity, and water leakage in the wiring cavity are digitally collected using optocoupler isolation to achieve high reliability and stability requirements. PT100 temperature acquisition uses photoelectric isolation technology to improve anti-interference capability.

Smart control cabinet built-in early warning communication controller (KQKZ01):

Built-in RTC real-time clock, ferroelectric memory, 4G full network module; RS485 communication interface with independent isolated power supply, dedicated to power supply and communication with the acquisition module;

The isolated RS485 communication port is specially used to collect electricity meter data; the isolated RS485 communicates with the MHI touch screen and PLC respectively.

The early warning communication controller uses an industrial-grade ARM processor, high-precision low-temperature drift component design, 3000V isolation voltage design, low leakage and high-reliability tantalum capacitors and solid capacitors.

WQ (30kW and above) IoT smart submersible sewage pump KQK-B (Z2) series electric control cabinet introduction and selection

The KQK-B (Z2) control cabinet supporting the WQ (30kW and above) IoT smart submersible sewage pump is an automatic control system that is economical, practical, safe, reliable, and easy to maintain.

The control cabinet uses low-voltage electrical appliances and liquid level sensors from well-known domestic and foreign brands. It has protection functions such as short circuit, phase loss, overload, vibration parameters, temperature changes, motor cavity leakage, oil chamber leakage and winding overheating. The control cabinet It can be equipped with various liquid level sensors such as float level switches, input-type or ultrasonic sensors, and can automatically control the start and stop of the water pump according to the level of the liquid when unattended. Except for single-control products, all products with main and backup pump control have the function of automatically shutting down the faulty pump and automatically putting the backup pump into operation. The two-pump, three-pump and four-pump control cabinets can automatically stop or cycle to achieve equal running time of each pump.

The control cabinets with general configuration are mainly from well-known domestic brands such as Tianzheng, Chint, and Dexi; the components of control cabinets with high-end configuration are mainly from internationally renowned brands such as Schneider, Xizi, and ABB.

WQ (30kW and above) IoT smart submersible sewage pump dedicated KQK-B (Z2) control cabinet model naming method

WQ (30kW and above) IoT smart submersible sewage pump dedicated KQK-B (Z2) control cabinet selection and description

Autocoupling step-down starting

It refers to using an autotransformer to reduce the starting voltage applied to the stator winding of the motor when starting the motor. After the motor starts, disconnect the motor from the autotransformer so that it can operate normally under full voltage.

Different taps of the autotransformer can be selected according to the allowed starting current and required starting torque to achieve step-down starting, and it can be used regardless of the Y or △ connection of the stator winding of the motor.

The following table lists the control cabinet model and box size selected for the automatic step-down starting of the WQ (30kW and above) IoT smart submersible sewage pump.

WQ (30kW and above) IoT smart submersible sewage pump (one control, one) – auto-coupling step-down start

WQ(30kW and above )One control two—Autotransformer

WQ(30kW and above )One control three—Autotransformer

WQ (30kW and above) IoT smart submersible sewage pump (one control four) – auto-coupling step-down start

Electronic soft start

The soft starter connected in series between the power supply and the controlled motor controls the conduction angle of the internal semiconductor (thyristor), so that the motor input voltage gradually increases from zero according to a preset functional relationship until the end of starting, giving the motor full voltage. The voltage slowly increases from zero to the rated voltage, so that the starting current of the motor during the starting process changes from the uncontrollable overload impact current to a controllable one, and the starting current can be adjusted as needed.

There is no impact torque during the entire starting process and the motor starts smoothly. Various parameters during the starting process, such as current limit value, starting time, etc., can be adjusted according to the characteristics of the motor load. Soft stop can also be achieved. Due to the use of semiconductor converter technology, high harmonics will be generated, causing pollution to the power grid.

The following table lists the model and size of the control cabinet used for the electronic soft start of the submersible sewage pump supporting WQ(30kW and above) series

Electronic soft start selection instructions

Mainstream brand low-voltage electrical appliances (mainly AC contactors) with power above 110kW are divided into 132kW, 160kW, 200kW, 250kW and 335kW, and the corresponding contactor current values are 250A, 300A, 400A, 500A and 630A respectively. There are no 185kW, 220kW, 280kW, or 315kW power levels.

The low-voltage electrical appliances in the control cabinet are selected according to their actual working current. In actual application, the control cabinet models matching 185kW, 220kW, 280kW and 315kW water pumps may be 200kW, 250kW and 355kW.

(Liquid level) float switch, terminal box, conduit and cable model introduction

(Liquid level) float switch schematic diagram

The minimum fluid level is marked on the submersible sewage pump catalog and instructions. “▽” means the liquid level at which the stator part of the motor is half submerged by the medium. Lower liquid level Float level The float switch is used when the electric control cabinet is placed in automatic gear.

Wiring and setting of the liquid level float switch: There are three wire cores in the cable of the liquid level float switch: black, brown and blue.

When the float floats, the internal contacts of the float connect the black and brown wire cores and disconnect the black and blue wire cores;

When the float droops, the opposite is true. The internal contact connects the black and blue wire cores and disconnects the black and brown wire cores. When the float is in the middle position, the internal switch maintains its original position. The internal switch only changes action when it reaches the floating and sagging positions as shown in the figure. In the case of water drainage, connect the black and brown wire cores to the electric control cabinet, and the blue wire core must be wrapped and insulated; in the water supply situation, connect the black and blue wire cores to the electric control cabinet, and the brown wire core must be wrapped and insulated.

If a float switch is used to control the two liquid levels of starting and stopping the pump, the position of the weight on the cable can be adjusted, which determines the liquid level difference between opening and closing of the water pump.

So in principle, a float switch can realize a set of upper and lower liquid level start and stop pump control. However, if the liquid level difference is large, the length of the float swing arm will increase, and the weight of the cable from the weight to the float will affect the accuracy of the liquid level control.

Therefore, our company’s special electric control cabinet for submersible sewage pumps is set up with float switches like this:

For the main pump or large pump, use two float switches to control the start and stop liquid levels respectively;

For small pumps or backup pumps with extra high water levels, a float switch is used to control the two liquid levels of starting and stopping the pump. When users need more than the specified number of float switches or do not order our special electric control cabinet for submersible sewage pumps, they can also order float switches from us.

Terminal boxes and conduits

When the electric control cabinet is far away from the pump room, a terminal box can be installed. The terminal box is an optional accessory.

This picture is for illustration only and does not represent a design specification. Matters such as pump station design and safety should be handled in accordance with relevant standards and specifications. When it is necessary to install a threading tube (the threading tube is prepared by the user), the inner diameter of the threading tube should be determined according to the outer diameter of the cable.

WQ (30kW and above) IoT smart submersible sewage pump cable model and size table

WQ (30kW and above) IoT smart submersible sewage pump ordering instructions

In order to make the pump you choose more suitable, users are warmly welcome to consult our company’s technical department for technical issues.

1. When ordering, please indicate: serial number, impeller number, material of flow parts, installation method, and discharge port diameter.
2. The installation method of the water pump is subject to the installation diagram on the sample.
3. Due to the excellent design of the coupling frame in the coupling device, the guide rod only needs to use ordinary water pipes or steel pipes. We have provided the specifications and length calculation method of water pipes or steel pipes used as guide rods in the sample. Users only need to purchase water pipes or steel pipes by themselves and cut them to the required length. Therefore, the coupling device does not include a guide rod.
4. This series of water pumps are not equipped with a motor cooling system. If a cooling sleeve is required, it is a special order and the delivery time will be extended.
5. Standard configuration, motor cable is provided according to 10 meters. When users require other lengths, they should indicate this on the order.
6. Complete sets of supply parts are supplied according to the installation method selected by the user.
7. When you do not purchase the Kaiquan smart control cabinet, you must purchase a drainage pump smart signal collection box to collect the sensor data of the sewage pump and transmit it to the Kaiquan smart cloud platform to achieve remote monitoring.

Otherwise, the remote monitoring smart function cannot be realized. If you purchase a Kaiquan intelligent control cabinet, you do not need to purchase a drainage pump intelligent signal acquisition box.

8. Users of optional parts and spare parts need to order separately.
9. For hard pipe mobile installation Y, each pump is supplied with a complete set of elbow joints; for hose mobile installation R, each pump is supplied with a complete set of hose elbow joints. If a pump for mobile installation requires more than one elbow or hose elbow, these must be ordered separately.
10. The diameters of elbow joints are: 50, 65, 80, 100, 150, 200, 250, 300, 350, 400, 450, 500, 550, 600.
11. The diameters of hose elbow joints are: 50 (matched with 64 hose), 50×65 (matched with 76 hose), 65 (matched with 76 hose), 80 (matched with 89 hose), 100 (equipped with 102 hose), 150 (equipped with 152 hose).
12. The tapered tube is an optional part. Its two end diameters are: 50×65, 50×80, 65×80, 80×100, 100×150, 150×200, 200×250, 250×300, 300× 350, 350×400, 400×450, 450×500, 500×600. The tapered tube installed in the discharge line should be used for diffusion and not for contraction.

When the tapered pipe and the elbow joint on the discharge pipeline are connected to each other, the diameter of the elbow joint should be consistent with the diameter of the large end of the tapered pipe, that is, the principle of “spread first and then turn” should be followed.

In this way, the pipeline loss is less than “turn first and then spread”.

13. For coupling-installed pumps, if the diameter of the discharge pipe is larger than the diameter of the pump, a tapered pipe can be installed on the outlet pipe seat.

The diameter of the small end of the tapered pipe should be consistent with the diameter of the outlet pipe seat, that is, the diameter of the pump.

For the specifications, nominal pressure and size of elbow joints, hose elbow joints and tapered pipes, please refer to the “Accessories Description” at the end of the sample.