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How much do you know about pipeline pumps?

发布时间:2024-04-07 10:23:00 点击:44
Classification of pipeline pumps
1. Single stage single suction pump for clean water pipeline
This type is used for high-rise building heating, water supply, industrial and domestic water supply and drainage, pressurization, industrial pipeline pressurization transportation, cleaning, refrigeration and air conditioning circulation, water supply equipment and boiler accessories, and the operating temperature is usually controlled below 80 ℃.
2. Pipeline single-stage single suction hot water pump
This type of ring conveyor belt IRG single stage single suction hot water pipeline pump for high-temperature hot water boilers in metallurgical, chemical, paper mills, timber, restaurants, bathrooms, hotels, textiles and other departments, with a service temperature generally not exceeding 120 ℃.
3. Pipeline single-stage single suction chemical pump

This type of pipeline pump is suitable for transporting chemical corrosive liquids in industries such as hygiene, chemical, textile, pharmaceutical, food, petroleum, and refining. Its operating temperature is not higher than 100 ℃, making it an ideal product to replace traditional chemical pumps.

4. Pipeline single-stage single suction pump
This type is an ideal product for traditional oil pumps, suitable for transporting oil products and flammable and explosive liquids in oil depots, refineries, chemical and power departments of enterprises and institutions. The operating temperature needs to be within 120 ℃.
5. Pipeline high-temperature oil pump, pipeline high-temperature chemical pump, pipeline high-temperature hot water pump
This type is formed on the basis of adding water cooling units, and the operating temperature can reach up to 180 ℃ or even higher.
1、 Construction of Pipeline Pump
1. Impeller
The impeller is the core part of a centrifugal pump, with high rotational speed and high output. The blades on the impeller play a major role, and the impeller needs to undergo static balance experiments before assembly. The inner and outer surfaces of the impeller are required to be smooth to reduce friction losses caused by water flow.
2. Pipeline pump body

The pipeline pump body, also known as the pump casing, is the main body of the water pump. Plays a supporting and fixing role, and is connected to the bracket for installing bearings.

3. Pump shaft
The function of the pipeline pump shaft is to connect the coupling with the electric motor, transmitting the torque of the electric motor to the impeller, so it is the main component for transmitting mechanical energy.
4. Bearings
Bearings are components that are placed on the pump shaft to support the pump shaft, and there are two types of bearings: rolling bearings and sliding bearings. When using butter as a lubricant for rolling bearings, it should be added appropriately. Generally, if the volume is too large, it will heat up, and if it is too small, there will be noise and heat up!
During the operation of the water pump, the highest temperature of the bearing is usually around 85 ℃. If it is too high, it is necessary to investigate the cause (whether there are impurities, whether the oil quality is black, whether water is entering) and deal with it in a timely manner!
5. Sealing ring
Sealing ring, also known as leak reducing ring. Excessive clearance between the impeller inlet and the pump casing can cause water in the high-pressure area of the pump to flow towards the low-pressure area through this clearance, affecting the pump's water output and reducing efficiency! A small gap can cause friction and wear between the impeller and pump casing.
In order to increase reflux resistance and reduce internal leakage, delay the service life of the impeller and pump casing, a sealing ring is installed at the junction of the inner edge of the pump casing and the external support of the impeller, and the sealing gap should be kept between 0.25 and 1.10mm.
6. Stuffing box
The packing box mainly consists of packing, water seal ring, packing cylinder, packing gland, and water seal pipe. The main function of the packing box is to seal the gap between the pump casing and the pump shaft, preventing the water flow inside the pump from flowing outside and the air from outside from entering the pump. Always maintain vacuum inside the water pump! So during the operation and inspection of the water pump, special attention should be paid to the inspection of the packing box! The packing needs to be replaced after about 600 hours of operation.
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