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What is a Vertical Pump?
A vertical multistage pump is a centrifugal pump containing two or more impellers. The impellers may be mounted on the same shaft or on different shafts, but for the majority if pumps they are on the same shaft. The fluid flows into the inlet of the pump casing where it flows into the eye of the impeller. The impeller is driven & rotated by mechanical means such as an electric motor or engine etc. The rotation of the impeller creates centrifugal force which directs the fluid along the impeller vane and pushes the fluid to the outer tip of the impeller vane where it enters the stage diffuser.
The diffusers are a type of cutwater which direct the fluid into the suction eye of the next impeller. This process continues until the fluid has passed through each impeller stage. The fluid is then directed out the pump casing through a final diffuser and into the pump discharge. Each stage that the fluid passes through increases the discharge pressure. Multistage pumps are used when higher pressures are required which single stage pumps of the same size are unable to attain.
Vertical Multistage Pump Products
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Vertical Multistage Pump
CDLF 2 Series 220V/380V Vertical Multistage Centrifugal Water Pump
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Vertical Multistage Pump
CDLF 8 Series 220V/380V Vertical Multistage Centrifugal Water Pump
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Vertical Multistage Pump
CDLF 16 Series 220V/380V Vertical Multistage Centrifugal Water Pump
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Vertical Multistage Pump
CDLF 65 Series 220V/380V Vertical Multistage Centrifugal Water Pump
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Vertical Multistage Pump
CDLF 32 Series 220V/380V Vertical Multistage Centrifugal Water Pump
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Vertical Multistage Pump
CDLF 120 Series 220V/380V Vertical Multistage Centrifugal Water Pump
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The main components of vertical multistage centrifugal pump
The vertical centrifugal pump is mainly composed of three parts: 1. Pump, 2. Motor and 3. Base.
Its structure mainly includes impeller, pump body, pump cover and mechanical seal and other components. Among them, the pump is a single-stage single-suction horizontal centrifugal type, and the pump body and the pump cover are divided from the back of the impeller, which is what we call the structure of the rear door. However, most pumps have sealing rings on the front and back of the impeller, and a balance hole is set on the cover plate behind the impeller to balance the axial force on the rotor through balancing. The inlet of the pump is axially and horizontally sucked, and the port is arranged vertically upward. The pump and motor use the same shaft. The pump and motor are directly connected.
Structural Description of Vertical Multistage Centrifugal Pump
The CDLF Vertical Multistage Pump: A Rigidly Connected Motor and Pump System. The Motor is a Y-Type Three-Phase Asynchronous Motor Connected to the Pump by a Coupling. The Pump Consists of a Stator and Rotor Section, Including a Water Inlet Section, Middle Section, Guide Vane, Water Outlet Section, Stuffing Box Body, and More. The Stator Features Sealing Rings and Balance Sleeves to Prevent Wear and Tear, While the Rotor Includes a Shaft, Impeller, and Balance Hub. The Water-Lubricated Bearing and Angular Contact Ball Bearing Support the Axial Force of the Pump. The Shaft Seal Can be Selected by Users, Either Packing or Mechanical Seal.
The use of vertical Multistage Centrifugal Pump
Water Supply
Water Filtration and Transportation for Efficient Delivery: Solutions for District Water Supply
Industrial Pressurization
Process water system, cleaning system, high pressure flushing system, fire protection system.
Industrial Liquid Transportation
Efficient Fluid Management Solutions for Cooling and Acidic Medium Transportation
Water Treatment
Water Treatment Solutions for Ultrafiltration, Reverse Osmosis, Distillation, Separation.
Application Range of Vertical Pump
- Frequency conversion water supply system main pump
- General water supply, boiler water supply
- Cold and hot water circulation
- Manufacturing engineering equipment, beverage processing equipment
- Municipal water supply and pressurization
- Industrial circulation system and processing system.
- Environmental protection water treatment, permeation analysis system.
- Agricultural irrigation and dehydration.
- Industrial plant cleaning and various cleaning work
How to distinguish CDL/CDLF series
- The material of the inlet and outlet water body is stainless steel is CDLF.
- And, The inlet and outlet water body is made of cast iron is CDL.
- CDL is suitable for non-corrosive liquids.
- CDLF is suitable for mildly corrosive liquids.
- (fluoroplastics on the surface of the wetted parts)
Vertical pump technical parameters
- Flow: 1-85m3/h
- Lift: 4-250m
- Power: 0.37-45kw
- Speed: 2900r/min
- Caliber: 25-80mm
- Temperature range: -15°C-+120°C
Vertical pump model meaning
- Example: CDL F 2-15
- CDL - Light Duty Vertical Multistage Centrifugal Pump
- F - Wetted parts are stainless steel 304 or 316
- 2 - Pump design flow rate (m3/h)
- 15 – Grade
Advantages of vertical pumps
- Space-Saving Design
- Easy Maintenance
- Reduced Noise Levels
- Versatility
- High-Pressure Output
- Easy Installation
- Reduced Vibration
- Safe Operation
- Better Efficiency
How to Choose a Vertical Pump
Multistage pump selection method
Find how to choose the right vertical pump for your application with our comprehensive guide. Discover key factors such as flow rate, head pressure, and material compatibility, and gain insights into selecting the best pump for your needs.
- Determine type, performance, flow, pressure, temperature,
- NPSH, suction lift for multi-stage pump selection
- Ensure high reliability, low noise, and minimal vibration
- Calculate the cost of installation, and maintenance
Solutions to Common Faults of vertical Multistage Centrifugal Pumps
- The pump cannot absorb water, and the pressure gauge pointer swings violently. Inadequate filling water and air leakage at the pipeline-instrument connection. Inspect for leaking bottom valves, fill with water, and tighten or repair.
- The water pump produces no water and the vacuum gauge is high. The bottom valve is closed, the suction pipeline resistance is excessive, and the suction height is too high. Replace the water pipe, check the bottom valve, and lower suction.
- The pressure gauge shows pressure but no water. The outlet pipe resistance is too high, the impeller is obstructed, the rotation orientation is improper, and the pump speed is too low. Inspect water pipes. Increase pump speed, check motor, and clean impeller.
- Pump power usage is high. Pump flow rises due to impeller wear, tight packing gland, and heat. Check the pump shaft for bends, tighten the packing gland, replace the impeller, enhance water resistance, and lower flow.
- Leaking mechanical seal & Repair the mechanical seal and fix the sealing surface.
- The pump sounds strange and doesn’t create water. Suction pipe resistance, leakage, and liquid temperature are too high. Inspect the suction pipe and bottom valve, block air leaks, lower water suction height, and lower water temperature.
- The water pump bearing overheats and rattles.
The motor and pump are not concentric, and the bearings are dry or worn. Adjust motor-pump shaft coaxially, add oil, or replace the bearing.
Precautions for Vertical Multistage Centrifugal Pumps Uses
- Always read and follow the manufacturer’s instructions and guidelines for the proper installation, operation, and maintenance of the vertical multistage centrifugal pump.
- Make sure the pump is installed in a stable and level location with sufficient space for maintenance and repair work.
- Ensure that the pump is connected to a power supply with the appropriate voltage and frequency, and use appropriate protective devices, such as circuit breakers and fuses.
- Inspect and clean the suction line and impeller regularly to prevent blockages and clogging, which can cause damage to the pump.
- Regularly check the condition of the mechanical seal and replace it if necessary to prevent leakage.
- Monitor the temperature of the pump and its components to prevent overheating, which can cause damage and reduce the lifespan of the pump.
- Always wear appropriate personal protective equipment (PPE), such as gloves and eye protection, when working with the pump or its components.
Why Choose Our Products?
304 stainless steel material
Beautiful and generous, and high practicability, no rust, wear resistance, strong acid and alkali resistance (316 stainless steel can be upgraded)
YE Efficient maintenance-free motor
Fully enclosed structure, IP55, insulation class F, all copper motor unique “double lock” drive end bearing, Withstands higher inlet pressure for energy and water savings
The pump core adopts multi-stage impeller interlocking
The pump core component adopts the assembly process of multi-stage impeller interlocking, fastening nut back-locking and component system interlocking, which minimizes the gap between impellers of each stage, improves the hydraulic efficiency of the impeller, and ensures the reliability of the pump core component.
Stainless steel cartridge mechanical shaft seal
Compared with ordinary seals, it has the advantages of high temperature resistance, acid and alkali resistance, strong toughness, convenient replacement, and long service life.
The impeller adopts tight laser
It has full welding technology guarantee the high strength and smooth operation of the impeller.
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