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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. |
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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. |
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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. |
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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 |
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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. |
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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. |
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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 |
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.
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.
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.
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.
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.
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.
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:
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There are two types of the adjustable impeller
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| The semi-adjustable blades are detachable. To change the angle, loosen the blades and manually adjust them | |
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| 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. |
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.
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.
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.
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.
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.
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.
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.
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.
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.
