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Home news company wintew What are the Main Components of a Centrifugal Pump | China Centrifugal Pump

What are the Main Components of a Centrifugal Pump | China Centrifugal Pump

date 2022-09-21

What are the Main Components of a Centrifugal Pump


The basic structure of a centrifugal pump is composed of eight parts, namely: impeller, pump body, pump cover, water retaining ring, pump shaft, bearing, sealing ring, and stuffing box.


1. The impeller is the core part of the centrifugal pump. It has a high speed and a large output force. The blades on the impeller play a major role. The impeller must pass a static balance test before assembly. The inner and outer surfaces on the impeller are required to be smooth to reduce the frictional loss of the water flow.


2. The pump body is also called the pump casing, which is the main body of the pump. It plays the role of supporting and fixing, and is connected with the bracket on which the bearing is installed.


3. The function of the pump shaft is to connect the motor with the coupling and transmit the torque of the motor to the impeller, so it is the main component for transmitting mechanical energy.


4. The bearing is a component that is sleeved on the pump shaft to support the pump shaft. There are two kinds of rolling bearings and sliding bearings. Rolling bearings use tallow as a lubricant to refuel, generally 2/3 to 3/4 of the volume is too much, it will heat up, too little and it will make noise and heat!


5. The sealing ring is also called the leakage reducing ring. If the gap between the impeller inlet and the pump casing is too large, the water in the high pressure area in the pump will flow to the low pressure area through this gap, which will affect the water output of the pump and reduce the efficiency! If the clearance is too small, the friction between the impeller and the pump casing will cause wear. In order to increase the backflow resistance, reduce internal leakage, and delay the service life of the impeller and the pump casing, a sealing ring is installed at the joint between the inner edge of the pump casing and the impeller external aid, and the sealing gap should be kept between 0.25 and 1.10mm.


6. The stuffing box is mainly composed of packing, water sealing ring, packing cylinder, packing gland and water sealing tube. The function of the stuffing box is mainly to close the gap between the pump casing and the pump shaft, so that the water flow in the pump does not flow to the outside and the outside air does not enter the pump. Always maintain a vacuum inside the pump! When the friction between the pump shaft and the packing generates heat, the water seal pipe is used to inject water into the water seal ring to cool the packing! Keep the pump running properly. Therefore, special attention should be paid to the inspection of the stuffing box during the circuit inspection process of the pump! The packing should be replaced after about 600 hours of operation.


7. During the operation of the centrifugal pump, because the liquid enters the impeller under low pressure and flows out under high pressure, the pressure on both sides of the impeller is unequal, resulting in an axial thrust directed towards the inlet, which will Cause the rotor to move axially, resulting in wear and vibration, so an axial thrust bearing should be installed to balance the axial force.





How to maintain a centrifugal pump


A centrifugal pump is a mechanical device used to move liquids by using centrifugal force. This type of pump is commonly used in industries such as mining, construction, and power generation. Centrifugal pumps are also used in irrigation systems and water treatment plants.


The main parts of a centrifugal pump are the impeller, the volute casing, and the diffuser. The impeller is the rotating part of the pump that creates the centrifugal force. The volute casing is the housing that contains the impeller. The diffuser is a stationary part of the pump that helps to distribute the fluid evenly around the impeller blades.


To maintain a centrifugal pump, it is important to keep all of these parts clean and free from debris. It is also important to regularly check the alignment of the impeller and shaft.


1. Check the oil level in the pump regularly. The oil should be at the proper level, and should be changed according to the manufacturer’s recommendations.


2. Check the alignment of the pump and motor regularly. The pump and motor should be properly aligned according to the manufacturer’s specifications.


3. Inspect the impeller regularly for wear or damage. The impeller should be replaced if it is worn or damaged.


4. Inspect the seals and gaskets regularly for leaks. Leaking seals and gaskets should be replaced immediately.


5. Keep the pump housing clean and free of debris to prevent clogging.


How to choose centrifugal pump


There are many different types and sizes of centrifugal pumps available on the market, so how do you choose the right one for your needs? Here are some factors to consider:


1. The application. What will the pump be used for? There are centrifugal pumps designed for specific applications such as irrigation, water treatment, or general industry.


2. The flow rate. How much water do you need to move per minute? The flow rate is a key factor in selecting the right pump.


3. The head pressure. This is the amount of pressure the pump needs to generate to move the water to its destination.


4. The power source. Will the pump be powered by electricity, gasoline, or diesel?


A centrifugal pump is a type of pump that uses a rotating impeller to move water or other fluids by using centrifugal force. Centrifugal pumps are commonly used in industrial and agricultural applications, as well as in home plumbing systems.


There are many different types of centrifugal pumps, and each type has its own advantages and disadvantages. Choosing the right pump for your application can be a challenge. Here are a few things to consider when choosing a centrifugal pump:


1. The type of fluid you will be pumping: Centrifugal pumps are designed for specific types of fluids. Make sure you choose a pump that is compatible with the fluid you will be pumping.


2. The desired flow rate: Centrifugal pumps can be configured to provide different flow rates, so make sure you choose a pump with the desired flow rate for your application.


3. The desired pressure: Centrifugal pumps can also be configured to provide different levels of pressure, so make sure you choose a pump that can provide the desired pressure for your application.


The centrifugal pump is the most common type of pump used in industry today. There are many different kinds of centrifugal pumps, each with its own specific set of features and benefits.

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