Vertical stainless steel multi-stage stamping pump CDLF multi-stage water pump lightweight pump

Vertical stainless steel multi-stage pump, stamping multi-stage centrifugal pump, stainless steel domestic water supply pump, 50CDLF16-50

1Vertical stainless steel multi-stage stamping pump CDLF multi-stage water pump lightweight pumpProduct Overview:
The CDL/CDLF stainless steel multi-stage centrifugal pump is designed based on the advantages of ISG centrifugal pumps and GDL vertical multi-stage centrifugal pumps. The jacket is made of high-quality stainless steel, and the shaft seal is made of wear-resistant mechanical seal, with no leakage and long service life. By using hydraulic balance to solve axial force, it operates smoothly, has low noise, occupies a small area, and is easy to decorate. This series of lightweight multi-stage stainless steel centrifugal pumps is a new pump type that can meet the requirements of tower free water supplyIntegrated intelligent water supply with box pump、Non negative pressure water supply equipmentThe water supply, drainage, and fire-fighting facilities required for high-rise buildings, deep mines, and other industries are ideal pump types for transporting cold and hot water or general media with physical and chemical properties similar to water.

IIVertical stainless steel multi-stage stamping pump CDLF multi-stage water pump lightweight pumpInstallation precautions:

The pump should be installed in a well ventilated and antifreeze location, with the pump and motor at least 150mm away from obstacles to ensure sufficient air around the cooling fan of the motor.

To minimize import friction losses, the inlet pipeline should be as short as possible.

Before installing the pump, it is necessary to check whether the pipeline system is equipped with a check valve to prevent liquid backflow. If the pump is used for boiler water supply, a check valve must be installed on the conveying pipeline between the pump and the boiler.

The pump should be installed on a concrete or similar foundation with a suitable height, or on a fixed bracket on the ground or wall. Be careful not to concentrate the weight of the pipeline on the pump to prevent damage to the pump.

The "→" symbol at the inlet and outlet of the pump indicates the direction in which the liquid passes through the pump. Before starting the pump, it should be checked whether the liquid can pass freely.

Before installing the pump, the inlet pipeline should be cleaned. If it cannot be guaranteed that there are no particles in the pipeline, it is necessary to install a filter screen 0.5-1m from the pump inlet (especially suitable for pumps with a flow rate less than 8m ³/h) to ensure the normal operation of the pump.

During the installation of the water inlet pipeline, measures should be taken to prevent the formation of air pockets.

IIIModel meaning
For example: CDL F2-80/7-P
CDL - Lightweight Vertical Non Self priming Multi stage Centrifugal Pump Series
F - (ordinary type omitted) overcurrent components are made of standard stainless steel
2- Rated flow rate
80-10 times the number of levels
7- Number of impellers
P - Pipeline connection

4、 Application scope of multi-stage centrifugal pump:

● Medium temperature: Room temperature type -15 ℃~+70 ℃; Hot water type+70 ℃~+120 ℃

Flow range: 1~110m ³/h

● Medium pH range: PH3~9

● High altitude: 1000m

5CDLF stainless steel multi-stage pumpProduct Usage
Water supply system: filtration and transportation of water plants, water supply in different zones of water plants, main pipeline boosting, high-rise building boosting, hotel boosting

High rise building complex: CDL stainless steel multi-stage pumps are commonly used in the configuration of tower free water supply equipment, non negative pressure water supply equipment, and box pump integrated intelligent water supply systems, making them an ideal choice for solving water supply problems in high-rise buildings.
Industry: Industrial water pressurization, process water system, cleaning system, high-pressure cleaning system, vehicle cleaning, fire protection system
Agriculture: farmland irrigation, land irrigation, garden spraying irrigation
Petrochemical industry: crude oil transportation, engine oil, other softened water, etc
Water treatment: high-pressure filtration system, permeate system, electrolysis, desalination system, distillation system, separator, swimming pool cleaning, desalination of swimming pool water

6、 Stainless steel multi-stage stamping pump small inlet pressure:

If the pressure in the pump is lower than the vapor pressure of the conveyed liquid, cavitation may occur. To avoid cavitation, ensure that there is a small pressure on the inlet side of the pump and a large suction stroke H [m] can be calculated according to the following formula:

● H=pbX10.2-NPSH-Hf-Hv-Hs

● pb=atmospheric pressure [bar]

(Atmospheric pressure can be set to 1 bar)

In a closed system, pb is the system pressure [bar]

NPSH=Net Positive Suction Head [m]

(Can be read from the possible high flow output of the pump on the NPSH curve)

Hf=inlet pipeline loss [m]

Hv=vapor pressure [m]

Hs=safety margin=0.5m head less

If the calculated value of H is positive, the pump can operate with a large suction range of H.

If the calculated value of H is negative, there must be a small water head with an inlet pressure of H.

7、 Performance parameter table of CDL16/CDLF16 models

Due to limited space,CDLF multi-stage pump modelThere are too many to list all, please refer to the product manual of CDL stainless steel multi-stage pump for more detailed parameter comparison

The major difference between multi-stage pumps and single-stage pumps is that multi-stage pumps have multiple impellers. The reason why pumps can transport liquids is that the centrifugal force generated by the impellers during high-speed rotation creates a pressure difference between the upper and lower parts of the impellers. Positive pressure is generated above the impellers, and negative pressure is generated at the bottom of the impellers. Therefore, the negative pressure generated by the pump during operation can suck water into the pump body and cause it to be thrown out through the impeller channel by centrifugal force to form positive pressure. Due to the limitation of energy efficiency, single-stage pumps can only achieve a large head of about 150. If they are further enlarged, not only will the size of the pump body, impeller and its components need to be increased, but also the motor power will need to be increased. Therefore, the land area and price will correspondingly increase. Therefore, the initial solution The solution is to use several single-stage pumps in series to solve the problem of high head transportation, However, with the development of the water pump industry, this solution that occupies space, wastes space, and constantly increases costs has been historically eliminated. Based on the above reasons, multi-stage pumps have been developed and have received high praise from users. As multi-stage pumps have multiple impellers working simultaneously, the pressure of multi-stage pumps increases step by step from each impeller, which means that each impeller is equivalent to a single-stage pump, and the pressure, that is, its head, is also the sum of the single-stage heads of each impeller. Therefore, multi-stage pumps are more efficient and energy-saving in use. With the same power, the output pressure of multi-stage pumps is much higher than that of single-stage pumps. The head of multi-stage pumps can now reach hundreds or even kilometers.