 +86-18061007135        jasonzhu@txtuohai.com                                                                                                                    Professional Submersible Pump Manufacturer 

Best Submersible Axial Flow Pump Supplier in China

TUOHAI committed to the water pump industry for 25 years, provide several types of submersible axial flow pumps with different installation, including vertical type, horizontal type, and float type, etc.

We will tell you everything about the axial flow pumps which you wanna know.

Let TUOHAI help you achieve business success.

 

Your Most Suitable Submersible Pump Manufacturer in China

 

According to the needs of customers, Tuohai Pumps has developed submersible axial flow pumps with various installation methods, which can be applied to municipal engineering, tunnel drainage, flood fighting and rescue, aquaculture, etc.

 

We have an advanced test system for submersible axial pumps, which can test submersible pumps with a maximum water outlet of 2000mm and 1000kw maximum power. 

 

Tuohai can also provide free pre-sale design and after-sale installation services.

Submersible Axial Flow Pumps with Different Installation

In order to meet the needs of different customers, Tuohai can provide various installation methods of submersible axial flow pumps, such as wellbore installation, horizontal installation, float installation, etc.
You can choose different installation methods according to the actual situation.
Tuohai can also provide you with free installation and design drawings for free according to your terrain.
submersible axial flow pump-1
 

Wellbore Installation Submersible Axial Flow Pump

 
The vertical submersible axial flow pump needs to be used in conjunction with the wellbore.
You can choose a concrete wellbore or a steel wellbore, etc.
 
submersible axial flow pump-2
 

Horizontal Installation Submersible Axial Flow Pump

 
Horizontal submersible axial flow pumps can be used on rivers with steep slopes or rivers where the wellbore cannot be used, it can be installed with slide rails or sled fixed installations.
 
Float type submersible axial flow pump
 

Float Installation Submersible Axial Flow Pump

 
The float-type submersible axial flow pump is used for where the water level changes very frequently. The pump suspends under the water by the float and is connected with a hose.
 
Why Choose TUOHAI?

Several Voltage and Power

 
Due to the different voltages in different countries, TUOHAI can provide customers with different voltages and powers.
 
Voltage: 380v, 660v, 3kv, 6kv, 10kv, etc.
 

Power of Submersible Axial Flow Pump

11kw 37kw 110kw 220kw 400kw 710kw
15kw 45kw 132kw 250kw 450kw 800kw
18.5kw 55kw 160kw 280kw 500kw 900kw
22kw 75kw 185kw 315kw 560kw 1000kw
30kw 90kw 200kw 355kw 630kw 1100kw

Several Material are Available

 

Tuohai provide several material of housing, impeller and axle for the submersible axial flow pumps to cope with different use environments.

 

Such as:

  • Cast Iron
  • Cast Steel
  • SS304
  • SS316
  • Duplex SS
  • etc.

Advantage Pump Test System

 

TUOHAI has a complete submersible axial flow pump test system, which can accurately test pumps of all calibers and powers.


The maximum test power of our pump test system is 1000KW, the test voltage is 380V, 660V, 3KV, 6KV, 10KV, and the maximum test diameter is 2 meters.

 

Assist in Installation for Submersible Pumps

 

Tuohai can send workers to the customer's location to assist in the installation, and you can also send technicians to our factory to observe the installation demonstration of the submersible pumps.


In addition, Tuohai also provides 7*24 hours of after-sales service.

 

Free Drawing for Submersible Pumps

 
Tuohai has a professional technical team that can select the appropriate submersible pump according to your civil engineering drawings and designs the perfect installation plan.

We will provide you with all drawings in CAD or PDF format, and all drawings are free.
 
Other Products You May Need
 
 
TUOHAI provides customers with a one-stop solution for submersible axial flow pumps, and can provide various supporting equipment.
Including sewage grinder and trash grille to reduce the trash in the water, the wellbore for installation of submersible axial flow pump and various control cabinet for customers to control the pump more conveniently
Sewage Grinder
 

Sewage Grinder

 
Sewage Grinder is used before the inlet of the submersible axial flow pump to smash various impurities in the water, thereby preventing the impeller of the pump from being entangled and blocked.
Tuohai can provide channel type and inline type Sewage Grinder
 
Trash grille for submersible axial flow pump
 

Trash Grille

 
Trash Grille has a grid-like conveyor belt with hooks, which can hook the garbage out of the water when blocking the garbage in the water, and block the garbage from entering the submersible axial flow pump, and can also avoid the excessive accumulation of garbage on the grille.
 
control cabinet for submersible axial flow pump
 

Control Cabinet

 
Tuohai provides supporting control cabinets for submersible axial flow pumps, including soft start, frequency conversion start, auto-coupling step-down start, and other starting methods. The materials are stainless steel and carbon steel, etc.
 
well bore for submersible axial flow pump
 

Well-Bore

 
Well-bore is an indispensable part of vertical axial flow pump installation. Concrete well-bore can be used, but most customers choose steel well-bore.
Tuohai can design installation methods for customers and provide all kinds of steel wellbore and stainless steel wellbore
 

What people Say About TUOHAI
 
FAQs for Submersible Axial Flow Pump
 
  • What is the working principle of the submersible axial flow pump?
    More+
    The submersible axial flow pump and submersible mixed flow pump is using the thrust of the rotating impeller blades to make the liquid to be transported flow in the direction of the pump axis.

    Because the blades have a certain helix angle with the axis of the pump shaft when the shaft is driven to rotate by the motor, a thrust (or lift) is generated on the liquid, and the liquid is pushed out from the discharge pipe.

    When the liquid is pushed out, a partial vacuum is formed in the original position, and the outside liquid will be sucked into the impeller along the tube under the action of atmospheric pressure. As long as the impeller rotates continuously, the pump will continuously suck and discharge liquid.
  • What are submersible axial flow pumps used for?
    More+
    QZB submersible axial flow pumps are mainly suitable for the following occasions:

    ①Farmland irrigation and drainage

    ②The municipal discharge of rainwater and mild sewage

    ③Process water and cooling water in the industry

    ④ Water transfer project in water conservancy

    It can also be used in urban water supply, water diversion projects, urban sewage, and drainage systems, sewage treatment projects, circulating water in thermal power stations, dock water supply and drainage, water conservancy projects, drainage irrigation, aquaculture, etc.
  • How does a submersible axial flow pump work?
    More+
    The submersible axial flow pump is a pump that transports the liquid along the axial direction by the force generated by the blades of the rotating impeller. There are several types of vertical, horizontal, oblique, and tubular.

    The submersible axial flow pumps mainly use the thrust generated by the high-speed rotation of the impeller to lift water. The lift generated by the blades of the axial flow pump against the water can push the water from below to above. The blades of axial flow pumps are generally immersed in liquid.

    Due to the high-speed rotation of the impeller, under the action of the lift generated by the blades, the water is continuously pushed upward, causing the water to flow out along the outlet pipe. The impeller rotates continuously, and the water is continuously pressed to a high place.

    This is how the submersible axial flow works.
  • What is the difference between a centrifugal pump and a submersible axial pump?
    More+
    • Centrifugal Pump

      Because centrifugal pumps are able to transport liquids mainly rely on centrifugal force, they are called centrifugal pumps. Most centrifugal pumps can not be used underwater.

      The centrifugal pump is generally driven by an electric motor. Before starting the pump, the pump body and the suction pipe are filled with liquid. When the impeller rotates at high speed, the impeller drives the liquid between the blades to rotate together.

      Due to the centrifugal force, the liquid is thrown from the center of the impeller to the outer edge of the impeller (the flow rate can be increased to 15-25m/s), and the kinetic energy also increases.

      When the liquid enters the pump casing, as the flow channel in the volute-shaped pump casing gradually expands, the flow rate of the liquid gradually decreases, and part of the kinetic energy is converted into static pressure energy, so the liquid flows out along the discharge port at a higher pressure.

      A certain vacuum is formed at the center of the impeller due to the liquid being thrown out, and the pressure at the liquid level is higher than that at the center of the impeller. Therefore, the liquid sucked into the pipeline enters the pump under the action of the pressure difference. The impeller keeps rotating, and the liquid is continuously sucked and lifted up.
       
     
    • Submersible Axial Flow Pump

      The working principle of the submersible axial flow pump is different from the centrifugal pump. It mainly uses the thrust generated by the high-speed rotation of the impeller to lift water. The lift generated by the blades of the submersible axial flow pump can push the water up.

      The submersible axial flow pumps work underwater. Due to the high-speed rotation of the impeller, under the action of the lift generated by the blades, the water is continuously pushed upward. The impeller rotates continuously, and the water is continuously pressed to a high place.

      The work of the submersible axial flow pump is based on the lift theory in aerodynamics. When the impeller rotates at a high speed, the liquid in the pump body will be affected by the axial lift force from the impeller, causing the water flow to flow in the axial direction.

      The submersible axial flow pump looks like a water pipe, and the diameter of the pump casing is about the same as the diameter of the suction port.
  • What is the rate of submersible axial flow pumps?
    More+
    The outlet diameter of the submersible axial flow pump is from 350, 500, 600, 700, 800, 900, 1000, 1200, 1400, 1600, a total of more than ten kinds of diameters.

    The flow range is 0.12-12m3/s
    The head range is 2-14m
    The power range is 7.5- 630kW
    Voltage level 380V, 660V, 3kV, 6kV, 10kV
  • How long will a submersible axial flow pump last?
    More+
    The design service life of submersible axial flow pumps is more than 10 years.
    The blades of the submersible axial flow pump are made of stainless steel.

    The fuselage, pump suction chamber, and pressurized water chamber are all made of HT200 cast iron, which can bear the impact of a certain load and increase the service life.

    The bearing of the submersible axial flow pump adopts stainless steel bearing, which can reduce vibration, noise, safe and reliable operation, prolong service life, and improve product operating life.

    The mechanical seal adopts Bergman or other high-quality alloy mechanical seals, and the static seal adopts Dingqing-70 O-ring.

    All exposed fasteners of the submersible axial flow pump are made of stainless steel.
     
  • Can the submersible axial flow pump run dry?
    More+
    No.

    The submersible axial flow pump must work underwater because it relies on flowing water or other liquids to cool the motor.

    If it works dry, without water or other liquid, the motor will burn out because it cannot be cooled.
  • How many horsepower is a submersible axial flow pump?
    More+
    The power rate of submersible axial flow pump is 7.5-630kW
  • How do I choose a submersible axial flow pump?
    More+
    If you want to buy a submersible axial flow pump, you just need to provide the necessary parameters such as head and flow rate, and we can select the most suitable model for you.

    In addition, we can also provide you with installation design solutions of submersible axial flow pump, and provide assistance in installation and other services.

What is Submersible Axial Flow Pump?

 

 

      With the acceleration of the pace of civilized city construction, the city's emergency plans for all levels have become more complete. Due to the particularity of urban drainage or flood control operations, higher and more professional requirements are also put forward for corresponding drainage equipment.  

 

      In response to the needs of the market and customers, Tuohai Pumps has developed and designed submersible axial flow pumps suitable for various working conditions. The main features are easy to install and easy to use, which is convenient for the urban drainage department to carry out flood control operations in cities or near rivers before the flood season or rainy season.

 
 

Types of Submersible Axial Flow Pump

 

      Submersible axial flow pumps can be divided into horizontal, vertical, and oblique types according to the installation position of the pump shaft. Only the pump body is different between them, and the internal structure is basically the same, the more commonly used is the vertical submersible axial flow pump.

 
  • Vertical Type Submersible Axial Flow Pump
 

 

      Due to the special structure of the submersible axial flow pump, if you choose the vertical submersible axial flow pump, it must be used in conjunction with the wellbore.

 

 

  • Horizontal Type Submersible Axial Flow Pump

 


      The installation of horizontal type submersible axial flow pump is very simple and does not require a matching wellbore or pump room. It is suitable for water areas with large and frequent water level changes.   

 

      The horizontal type submersible axial flow pump can be directly installed on the slope and fixed with steel cables and rails.   

 

      It can be installed horizontally and fixedly under the water and can also be hung under the pontoon, floating on the water, and the water outlet is connected with a hose.

 
 

Working Principle of Submersible Axial Flow Pump

 

 

 

    The submersible axial flow pump is using the thrust of the rotating impeller blades to make the liquid to be transported flow in the direction of the pump axis.

 

    Because the blades have a certain helix angle with the axis of the pump shaft, so when the shaft is driven to rotate by the motor, a thrust (or lift) is generated on the liquid, and the liquid is pushed out from the discharge pipe.

 

    Then the liquid is pushed out, a partial vacuum is formed in the original position, and the outside liquid will be sucked into the impeller along the tube under the action of atmospheric pressure. As long as the impeller rotates continuously, the pump will continuously suck and discharge liquid.

 

 

 

Applications of Submersible Axial Flow Pump

 

 

    QZ series submersible axial flow pump and QH series submersible mixed flow pump are designed for places requiring large flow rate and Iow head.

 

    Generally, the submersible axial flow pump is used for the head under 10 m while the submersible mixed flow pump for the head under 20m. This product is an excellent replacement to the traditional axial flow pump and mixed flow pump.

 

    The motor is seamlessly integrated with the water pump and operates under water. It has a series of advantages, which are unrivaled by traditional units.

 

    Submersible axial flow pumps are suitable to transport clean water or slightly polluted water,can be used in agriculture to irrigate and drain water, in municipal works to drain rainwater and slightly polluted water, in industries to supply processed water, cooling water and raw water, and in irrigation works to divert water. In addition, the pump can also be used in conjunction with submersible grinder and other equipment.

 
 
 

Features of Submersible Axial Flow Pump

 

  • The motor and the water pump are an integral part. There is no need to perform the complicated axial alignment, which costs time and work. So it is very simple and easy to install.

 

  • No space reserve is needed for the standby pump. By storing the standby pump into the storehouse, investment can be saved. Because the motor operates under the water, the civil works and the building for the pump station can be greatly reduced.With reduced installation area, 30 - 40% of the total price for the pump station can be saved.

 

  • The pump operates under the water and the water flows around the motor. So Iow noises and good cooling conditions have been achieved.

 

  • The pump station can also be constructed under ground, thus preserving the landscape above the earth.

 

  • Using the submersible electric pump is the thorough solution to solve the challenge of pump station construction and flood prevention at rivers and lakes, where the water level has a large fluctuation. In this way, the long shaft has been saved between the motor and the pump, and the safety and reliability improved.

 

 

 

Design Description of Submersible Axial Flow Pump

 

 

    The submersible axial flow pump is mainly composed of the pump body, impeller, guide vane device, inlet, and outlet.

 

    The shape of the submersible axial flow pump body is cylindrical, the impeller is fixed on the pump shaft, the pump shaft is supported by two bearings in the body, and the pump shaft is connected with the motor drive shaft through the top coupling.

 

    The outlet pipe is usually a 60° or 90° elbow, its function is to change the direction of the liquid outflow.

 

 
  • Impeller

 

 


The impeller of submersible axial flow pump is using the state-of-art hydraulic model and has superior, stable and sophisticated performance Choosing a Iow and value can ensure a good cavitation counter capability and smooth operation.

The impeller is generally composed of 2 to 6 curved blades, which are similar in shape to electric fan blades with twists.

The structure of the blade has two types:

 

      
  • Fixed impeller
 
  • Adjustable helix angle impeller

 

There are two types of the adjustable impeller

 
  • Semi-Adjustable
  The semi-adjustable blades are detachable. To change the angle, loosen the blades and manually adjust them
 
  • Full-Adjustable
  The fully-adjustable type is to automatically change the angle of the blades through a set of special follow-up mechanisms, and most of the blades of large pumps are fully-adjusted.

 

 
  • Shaft Seal

 

 

 

    Two independent mechanical seals make the motor and the submersible axial flow pump seal isolated. The tandem connection can provide multiple securities.So the reliability can be improved.

 

 

  • Oil Cavity

 

    The oil lubricates and cools the seal. It has played the role of an isolator between motor and the pumped medium.

 

    The remaining oil volume can alleviate the rise of the pressure within the oil cavity.

 

 

  • Anti-Rotation Equipment
 

    At the moment the submersible axial flow pump unit starts,the reactionary torque of the motor's starting torque often makes the whole unit rotate reversely.

 

    The antirotation equipment can solve this problem.

 

 

  • Bearing

 

 

    The bearing of the submersible axial flow pump uses the rolling bearing and can endure all axial and radial load. It is fully separated from the pumped medium.

 

 

  • Pump/Motor Shafts

 

 

 

    The small submersible axial flow pump and the motor share the same shaft. The structure is compact and axially short.

 

    When running, it produces little vibration. The seal and the shaft have a long operating life.

 

 

  • Motor

 

 
 

    It is a high-performance squirrel cage induction motor and is designed for use with a submersible water pump. It is up to GB755 standard.

 

    The insulation level is F class, the max. operating temperature can reach up to 135n. Depending on the power, it can use various voltages such as 380V, 660V, 3kV, 6kV and 10kV.

 

    The high voltage motor has gone through double VPI insulation processes to achieve a reliable insulation.

 

 

  • Motor Housing

 

    The motor housing transfers its heat directly to the surrounding media and then is taken away by the water.

 

    The large capacity and high voltage motor uses a patented ventilation technology to reduce the temperature rise of three-phase winding and evenly distribute the temperature field.

 

 

  • Monitoring Device

 

    The submersible axial flow pump has multiple protective devices and can be led to the electric cabinet via a control line.

 

    The protective devices include overload, phase failure,leakage,ultra temperature, humidity,and dampening protections.

 

 

  • Guide Vane

 

 

    The shape of the guide vane device is conical or cylindrical and is generally equipped with 6 to 10 guide vanes. The function of the guide vane device is to increase the pressure after the liquid from the impeller flows through the flow channel formed by the guide vanes and improve the efficiency of the pump.
 

 

 



 
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