Nowadays, there are many products of vertical pipeline centrifugal pumps on the market, and the varieties are also relatively abundant. With the use of more and more extensive, the advantages and disadvantages of vertical pipeline centrifugal pumps have also received widespread attention. The vertical pipeline centrifugal pump is a kind of pump device directly connected to the motor and the pump, so that the rotating structure of the pump is greatly simplified, and at the same time, the smooth running of the water pump can be guaranteed. The vertical pipeline centrifugal pump shaft seal adopts the cemented carbide. Mechanical seals, its biggest advantage is that the vertical pipe centrifugal pump covers more pump equipment than other pump equipment. What are the main uses of vertical pipe centrifugal pumps ?
Vertical pipeline centrifugal pump structure composition
First, the basic structure of a vertical pipeline centrifugal pump is composed of six parts.
The basic structure of the vertical pipeline centrifugal pump is composed of six parts: impeller, pump body, pump shaft, bearing, seal ring and stuffing box.
1. The impeller is the core part of the centrifugal pump. Its rotational speed is high and the blades on the impeller play a major role. The impeller passes the static balance experiment before assembly. The inner and outer surfaces on the impeller are required to be smooth in order to reduce the friction loss of the water flow.
2. The pump body is also called the pump housing and it is the main body of the pump. It plays a supporting and fixing role, and is connected with the bracket that mounts the bearing.
3, the role of the pump shaft is to connect the shaft and the motor, the motor torque transmission to the impeller, so it is the main component of the transmission of mechanical energy.
4. The bearing is a member that is sleeved on the pump shaft to support the pump shaft. There are two kinds of rolling bearings and sliding bearings. The use of butter as a lubricant for rolling bearings should be appropriate. Generally, 2/3 to 3/4 of the volume will be too hot, too little noise and heat! Sliding bearings use transparent oil as the lubricant and add to the oil level line. Too much oil must seep and float along the pump shaft. Too few bearings must be overheated and burned to cause an accident! The temperature of the bearing during the operation of the pump is up to 85 degrees. Normally the temperature is about 60 degrees. If it is high, the cause must be found (whether there is any impurity, whether the oil is black, whether it is in water) and it is handled in time!
5, the sealing ring, also known as leakage reduction ring. The gap between the impeller inlet and the pump casing is too large. As a result, the water in the high-pressure area of ​​the pump flows to the low-pressure area through this gap, affecting the pump output, and the efficiency is reduced! If the clearance is too small, it will cause friction between the impeller and the pump casing. In order to increase the return resistance to reduce the internal leakage and delay the service life of the impeller and the pump casing, a seal ring is installed at the inner edge of the pump casing and the impeller foreign aid joint, and the seal gap is preferably maintained between 0.25 and 1.10 mm.
6. The stuffing box is mainly composed of packing, water sealing ring, packing tube, 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 in the pump does not flow out and the outside air does not enter the pump. Always keep the vacuum inside the pump! When the friction between the pump shaft and the packing generates heat, it is necessary to rely on the water seal tube to live in the water seal ring to allow the packing to cool! Keep the pump running properly. Therefore, the inspection of the stuffing box during the inspection tour of the pump is of special attention! The packing should be replaced after about 600 hours of operation.
Vertical pipe centrifugal pump main purpose
1, long-distance transmission.
2, pressurization of the fire pipe.
3, cold and warm air conditioning hot and cold water cycle.
4, the production process cycle pressurized delivery, and adapt to a variety of drainage equipment, boilers and other equipment supporting the use.
5. There are many uses for vertical pipeline centrifugal pumps, but the main uses are for industrial, urban water supply, and high-rise buildings.
In many cases, when a user chooses a product, he or she often considers its use value. The use value of a product is generally reflected in its use. For the vertical pipeline centrifugal pump, after long-term development, its various functions have passed the test of production, and its main purpose has also been affirmed by users. It is often said that plum blossom comes from a bitter cold. For the vertical pipeline centrifugal pump experiencing wind and rain, its future will certainly be better.
Advantages and disadvantages of vertical pipe centrifugal pumps
Vertical pipe centrifugal pump advantages:
(1) Small size and small footprint.
(2) Simple structure, few parts and easy maintenance.
(3) The flow and pressure are stable, and the vibration is small when the pump is in normal operation.
Vertical pipe centrifugal pump disadvantages:
(1) The pump is less efficient at low flow rates below the rated flow.
(2) It is suitable for conveying various liquids with low viscosity. The viscosity of the liquid has a great influence on the performance of the pump.
(3) Poor self-priming ability makes it easy to evacuate. If the pumping liquid is below the center line of the pump, it must be filled or evacuated before opening the pump, otherwise the centrifugal pump cannot work normally.
Summary: The above is related to the main purpose of the vertical pipeline centrifugal pump. I hope to help everyone. If you want to know more related information, you can pay attention to this website information.
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