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Tianjin Zhonglan Pump Industry Pipeline Pump
Type pipeline centrifugal pump is a high-efficiency and energy-saving product designed and manufactured according to the performance parameters of type centrifugal pumps and pipeline pumps, with reference to the latest national pipeline centrifugal pump standards/. The pump is optimized and designed using domestic advanced hydraulic models. At the same time, hot water pumps, high temperature pumps, chemical pumps, oil pumps, etc. are derived on the basis of the different temperature media used, which are currently national standard products.
The basic structure of a vertical pipeline centrifugal pump is composed of six parts: impeller, pump body, pump shaft, bearing, sealing ring, and stuffing box.
The impeller is the core part of the centrifugal pump. It has a higher speed and greater force, and the blades on the impeller play a major role. The impeller must pass a static balance test before assembly. The inner and outer surfaces of the impeller must be smooth to reduce friction losses in the water flow.
The pump body is also called the pump casing, which is the main body of the water pump. It plays a supporting and fixing role and is connected to the bracket where the bearing is installed.
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.
Bearing is a component that is sleeved on the pump shaft to support the pump shaft. There are two types: rolling bearings and sliding bearings. Rolling bearings use butter as lubricant and should be refueled appropriately. Generally, too much volume will cause heat, and too little volume will cause noise and heat! Sliding bearings use transparent oil as lubricant, add oil to the oil level line. Too much oil will seep out along the pump shaft and drift, too little bearings will overheat and burn out, causing accidents! During the operation of the water pump, the highest temperature of the bearing is generally around 10°C. If it is too high, find the cause (whether there are impurities, whether the oil is black, whether water has entered) and deal with it in time!
Sealing ring is also called leakage reduction 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, affecting the water output of the pump and reducing the efficiency! If the gap is too small, it will cause friction between the impeller and the pump casing and cause wear. In order to increase the backflow resistance, reduce internal leakage, and extend the service life of the impeller and pump casing, a sealing ring is installed at the joint between the inner edge of the pump casing and the outer edge of the impeller. It is advisable to keep the sealing gap between.
The stuffing box is mainly composed of packing, water seal ring, stuffing barrel, packing gland and water seal tube. The main function of the stuffing box is to close the gap between the pump casing and the pump shaft, prevent the water in the pump from flowing outside and prevent outside air from entering the pump. Always maintain a vacuum inside the water pump! When the friction between the pump shaft and the packing generates heat, the water seal tube must be used to trap the water into the water seal ring to cool the packing! Keep the water pump running properly. Therefore, special attention should be paid to the inspection of the stuffing box during the inspection of the water pump operation! The packing must be replaced after about an hour of operation.
Product Usage
This type of pipeline centrifugal pump is used to transport clean water and other liquids with physical and chemical properties similar to clean water. It is suitable for industrial and urban water supply and drainage, pressurized water supply for high-rise buildings, garden irrigation, and fire protection. Pressure and equipment matching, operating temperature ℃.
Type hot water (high temperature) circulation pump is widely used in energy, metallurgy, chemical industry, textile, papermaking, and boilers in hotels and restaurants for pressurized circulation transportation of high-temperature hot water and circulation pumps for urban heating systems. The operating temperature is ℃. The operating temperature is ℃.
Type pipeline chemical pump is used to transport liquids that do not contain solid particles, are corrosive, and have a viscosity similar to water. They are suitable for petrochemical, metallurgy, power, paper, food, pharmaceuticals, and synthetic fiber departments. The operating temperature is ℃℃.
Type pipeline oil pump is used to transport gasoline, diesel, kerosene and other petroleum products. The operating temperature is ℃℃.
Working conditions
The suction pressure, or the maximum working pressure of the pump system, is the pump suction pressure, pump lift, pump static pressure test pressure. Please indicate the system working pressure when ordering. The working pressure of the pump system should be specified separately when ordering. In order to use cast steel materials for the flow-passing parts and connecting parts of the pump during manufacture.
Ambient temperature ℃, relative humidity.
If the volume content of solid particles in the conveyed medium does not exceed the unit volume, the particle size
Note: If the medium used contains fine particles, please indicate it when ordering so that a wear-resistant mechanical seal can be used.
Model meaning
For example
Vertical centrifugal pump
Nominal diameter of pump inlet and outlet
Nominal diameter of impeller
Flow classification
Impeller through the first and second Cutting