We are professional vertical multi-stage & single stage centrifugal pump manufacturer
2022-10-24
Vertical centrifugal pump is the power equipment for conveying water from deep underground pits or wells. Before the vertical pipeline centrifugal pump works, the pump body and the water inlet pipe must be filled with water to form a vacuum state. When the impeller rotates rapidly, the blades make the water rotate quickly, and the rotating water flies away from the impeller under the action of centrifugal force. After the water inside the pump is ejected, the central part of the impeller forms a vacuum area.
Vertical pipeline centrifugal pump for conveying clean water and other liquids with similar physical and chemical properties to clean water, suitable for industrial and urban water supply and drainage, high-rise building pressurized water supply, garden sprinkler irrigation, fire pressurization, long-distance transportation, HVAC refrigeration cycle.
The main purpose of vertical centrifugal pump is mainly used for engineering sewage and domestic sewage.
1. It is used for construction sites, engineering foundation construction, municipal facilities, and water works.
2. Discharge of sewage from the basement of various high-rise buildings, air defense pits, subways and other underground layers. .
3. Small and medium-sized enterprises sewage treatment and circulating water transportation
4. Food, paper, brewing, steel and non-ferrous metals
Vertical centrifugal pump is suitable for pumping pulp water, pulp, short fiber, starch, gravel particles, non-corrosive medium, especially suitable for liquids with more granularity. Ideal equipment for urban sewage treatment, subway, civil air defense projects, environmental protection systems, fish ponds, chicken farms, pig farms and other breeding industries and flood control and drainage.
At the same time, the vertical centrifugal pump is suitable for the pumping of mud water in the basement of various high-rise buildings, civil air defense projects, hotels and subways and other underground wastewater discharge projects. Pumping of slag slurry in factories and mines such as food factories, paper factories, breweries, cement factories, etc.
In addition, vertical centrifugal pumps are also especially suitable for narrow working surfaces such as shipbuilding, communications, shipping, basements, etc., as well as excavating ponds to dredge river channels.
1. Single-stage Vertical Centrifugal Pump: that is, there is only one impeller on the pump shaft.
2. Multistage Vertical Centrifugal Pump: that is, there are two or more impellers on the pump shaft.
Low Pressure Vertical Centrifugal Pump (below 2MPa)
Medium Pressure Vertical Centrifugal Pump (2 to 6MPa)
High Pressure Vertical Centrifugal Pump (above 6MPa)
Click Different Work Stress Types about Vertical Centrifugal Pump to know the more detail about this.
Another type of water pump opposite to the Vertical Centrifugal Pump is the Horizontal Centrifugal Pump. The biggest factor that distinguishes Vertical Centrifugal Pumps from Horizontal Centrifugal Pumps is that their pump shaft positions are different.
When Vertical Centrifugal Pumps‘s pump shaft is in a vertical position, the Horizontal Centrifugal Pumps's pump shaft is in a horizontal position.
Of course, Vertical Centrifugal Pump And Horizontal Centrifugal Pumps have other difference.
The basic structure of vertical pipeline centrifugal pump is composed of six parts: impeller, pump body, 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. 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! Sliding bearings use transparent oil as lubricant, add oil to the oil level line. Too much oil will seep along the pump shaft and float away, too little bearing will overheat and burn out and cause an accident!
During the operation of the pump, the temperature of the bearing is up to 85 degrees and generally runs at about 60 degrees. If it is too high, find the reason (whether there are impurities, whether the oil is black, whether it has entered water) and deal with it in time!
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.
The mechanical energy of the Vertical Centrifugal Pump prime mover is transferred to the liquid by the action of the rotating impeller on the liquid. Due to the action of the Vertical Centrifugal Pump, when the liquid flows from the inlet to the outlet of the impeller, its velocity energy and pressure energy are increased. The liquid discharged by the impeller passes through the pressure chamber, and most of the velocity energy can be converted into pressure energy, and then transported along the discharge pipeline. At this time, a vacuum or low pressure is formed at the inlet of the impeller due to the discharge of the liquid, and the liquid in the suction pool is pressed into the inlet of the impeller under the action of the liquid surface pressure/atmospheric pressure, so the rotating impeller is continuously Aspirating and expelling fluids.
The key to the installation technology of vertical pipeline centrifugal pump is to determine the installation height of the centrifugal pump, that is, the suction head. This height refers to the vertical distance from the water source surface to the centerline of the centrifugal pump impeller. It cannot be confused with the allowable vacuum suction height. The allowable vacuum suction height marked on the pump product manual or nameplate refers to the vacuum value on the water inlet section of the pump, and is measured by testing under 1 standard atmospheric pressure and 20 ℃ water temperature. It does not consider the water flow condition after the supporting of the suction pipe.
The installation height of the water pump should be the value that is left after the allowable suction vacuum height deducts the loss head of the suction pipe. It should overcome the actual terrain suction height. The installation height of the pump shall not exceed the calculated value, otherwise, the centrifugal pump will not be able to pump water. In addition, the calculation value is affected by the resistance loss head of the suction pipe. Therefore, the shortest pipeline layout should be adopted, and elbows and other accessories should be installed as little as possible. It can also be considered to properly equip larger caliber water pipes to reduce the flow rate in the pipe.
It should be pointed out that when the elevation and water temperature of the installation site of the vertical pipeline centrifugal pump are different from the test conditions, if the local elevation is more than 300 meters or the water temperature being pumped is more than 20 ℃, the calculated value should be corrected. That is, the atmospheric pressure at different altitudes and the saturated steam pressure when the water temperature is higher than 20 ℃. However, when the water temperature is below 20 ℃, the saturated steam pressure can be ignored.
In terms of pipe installation technology, the suction pipe shall be strictly sealed, and shall not leak air or water. Otherwise, the vacuum at the inlet of the centrifugal pump will be damaged, and the water output of the centrifugal pump will be reduced. In serious cases, water can not even be pumped. Therefore, it is necessary to do a good job in the pipeline interface work to ensure the construction quality of pipeline connection.
CDL16 CDL/CDLF Vertical Stainless Steel Multistage Centrifugal Pump
CDLF150 CDL/CDLF Vertical Stainless Steel Multistage Centrifugal Pump
CDL/CDLF Vertical Stainless Steel Multistage Centrifugal Pump
Why choose SHOUFEI as your supplier and service provider of Vertical Centrifugal Pumps?
One of the largest and oldest Vertical Centrifugal Pumps in China, with a partnership of more than 20 years
Experienced and knowledgeable employees across China are ready to assist you with your enquiries
Skilled service technicians can maximize the performance of your vertical multi-stage pump on site or in our most advanced workshop
An engineering and design team highly accustomed to completing multi-stage pump system
We also have related introductions about Centrifugal sump pumps and industrial hot water pump, you can check them out.
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Zhejiang Shoufei Pump Industry Co., Ltd.is a domestic professional stainless steel multi-stage centrifugal pump manufacturer integrating scientific research, manufacturing and sales. Since its establishment, the company has taken "integrity and innovation" as the company's development goals, and has provided customers with professional and fast first-class services for the purpose. The company has established a sound marketing network, and now the products have been widely used in a wide range of areas.
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Address : No. 2, Xiayang Industrial Zone, Deqing County, Huzhou City, Zhejiang Province, China.
Email : sales@shoufeipump.com Mobile： +86-136-6574-2262 Phone： 86-0572-8355383
