| Customization: | Available |
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| After-sales Service: | Professional Installation Team |
| Warranty: | 1 Year |
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Working Principle: The submersible pump also operates based on the basic working principle of centrifugal pumps. The motor drives the pump shaft and impeller to rotate through a coupling. The liquid in the impeller is thrown to the outer edge of the impeller under the action of centrifugal force, gains kinetic energy, and then enters the pump casing. In the flow channel of the pump casing, the speed gradually decreases, and the kinetic energy is converted into pressure energy, which is finally pressed out from the discharge port. At the same time, a low-pressure area is formed in the central area of the impeller. Under the action of the pressure on the suction liquid surface, the liquid is continuously sucked into the impeller, realizing a continuous and stable liquid conveying process. Unlike ordinary centrifugal pumps, the pump body of the submersible pump is immersed in the liquid storage tank, and the liquid is pumped by relying on the liquid level difference and the suction force of the impeller. This feature effectively avoids failures caused by cavitation, dry running and other problems.
The submersible pump is a special centrifugal pump commonly used in industries such as chemical engineering, petroleum, metallurgy, environmental protection, and light industry. With its unique structural design and performance advantages, it excels in conveying various corrosive, high-viscosity liquids containing solid particles, as well as various high-temperature or low-temperature media.
Structural Features
Vertical structure: It adopts a unique vertical design, with the pump body separated from the motor. The pump shaft is installed vertically, and the pump body is completely immersed in the liquid, with only the motor part exposed above the liquid surface. This structure effectively reduces the floor area, and is especially suitable for places with limited space. At the same time, because the pump body is immersed in the liquid, the pressure of the liquid itself can prevent air from entering the pump cavity, avoid the occurrence of air binding, and ensure the stable operation of the pump.
Long shaft design: It is equipped with a long shaft, and the length can be customized according to the installation depth requirements, so that the pump body can go deep into the liquid storage tank to pump liquid at a large depth. To ensure the stability of the long shaft during high-speed rotation, intermediate supports or guide bearings are usually set to effectively reduce the vibration and deflection of the shaft and prolong the service life of the shaft.
Multiple material options: The flow-through parts (impeller, pump casing, shaft, etc.) can be made of different materials according to the characteristics of the conveying medium. For example, when conveying highly corrosive liquids, stainless steel, fluoroplastic, ceramics and other corrosion-resistant materials are used; when conveying high-viscosity media or media containing solid particles, high-hardness and wear-resistant alloy materials are selected to ensure that the pump can work stably for a long time under harsh working conditions.
Sealing methods: Shaft seal is one of the key components of submersible pumps. Common sealing methods include packing seal, mechanical seal and dry gas seal. The packing seal has a simple structure and low cost, but its sealing performance and service life are relatively short; the mechanical seal has good sealing performance, small leakage and long service life, and is widely used in occasions with high sealing requirements; the dry gas seal is suitable for conveying flammable, explosive, toxic and harmful media. It forms a sealing gas film by introducing dry gas to ensure zero leakage of the medium and ensure production safety and environmental friendliness.
Performance advantages
No leakage or low leakage: Because the pump body is immersed in the liquid, the seal is realized by the static pressure of the liquid, which greatly reduces the risk of liquid leakage. For conveying toxic, harmful, flammable, explosive or valuable liquids, this feature can effectively avoid environmental pollution and material loss, and improve production safety.
Adapt to various working conditions: With a variety of material options and structural designs, submersible pumps can adapt to the conveying of media with different temperatures, pressures, corrosiveness and viscosities. Whether it is high-temperature, highly corrosive chemical solutions or high-viscosity oils, they can be reliably conveyed.
High efficiency and energy saving: The optimized hydraulic model design enables the submersible pump to have high efficiency. Compared with other types of pumps under the same flow and head conditions, it can reduce energy consumption and operating costs. At the same time, some submersible pumps can also be equipped with frequency conversion speed regulation devices to adjust the pump speed according to actual working conditions, so as to achieve energy-saving operation.
Convenient installation and maintenance: The overall structure is compact. During installation, no complicated infrastructure is required, and only the pump body needs to be vertically installed on the installation platform above the liquid storage tank. In terms of maintenance, because the pump body is partially immersed in the liquid, the contact with the external environment is reduced, the corrosion and wear of parts are relatively small, and the maintenance cycle is long. When maintenance is needed, only the pump body needs to be lifted out of the liquid storage tank to inspect and replace the internal components, which is easy to operate and reduces maintenance difficulty and cost.
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