Jining Jiuzhong Machinery Equipment Co., Ltd.

*Multi-stage centrifugal pump
D vertical multi-stage centrifugal pump details:
D vertical multi-stage centrifugal pump is based on the hydraulic model of the highly efficient and energy-saving product pump recommended by the country. Multi-level and multi-segment structure. The screw clamps the water inlet section, the middle section, and the water outlet section into one body. Each stage of the water pump is equipped with an impeller and a water guide vane. The axial force is solved by hydraulic balance method. The residual axial force is borne by ball bearings and lubricated with grease. The shaft seal adopts soft packing or mechanical seal. Product execution - "Vertical Multistage Centrifugal Pump Type and Basic Parameters" standard is mainly used to suck dilute, clean, non-corrosive, non-explosive water and liquids with physical and chemical properties similar to water that do not contain solid particles or fibers. All our products are designed and optimized using computers. The company has strong technical force, rich production experience and complete testing methods to ensure stable and reliable product quality.
2. Scope of application of D vertical multi-stage centrifugal pump:
D-type multi-stage centrifugal pump is widely used in fire protection, domestic water supply, air conditioning unit circulation and cooling water transportation in high-rise buildings.
3. D vertical multi-stage centrifugal pump product features:
Advanced hydraulic model: high efficiency, wide range.
. Novel structure and reliable operation: the axial force of the balance drum is eliminated and hydraulic balance is used to completely solve the problems of the balance drum being easy to rust, seize and wear, ensuring more reliable operation.
, Less operation and maintenance costs: The use of high-quality mechanical seals is wear-resistant, no leakage, long service life, low failure rate and less operation and maintenance costs.
Smooth operation and low noise: The use of low-speed motor makes the pump run smoothly and with low noise.
The vertical structure occupies a small area.
Model Series Speed Efficiency Flow Lift Power Weight
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This type of pump adopts a vertical segmental type and a stainless steel shell structure so that the inlet and outlet of the pump are located on the same horizontal line and have similar diameters
/> It can be installed in the pipeline like a valve. It combines the advantages of a multi-stage high-pressure vertical pump with a small footprint and the convenience of installation of a pipeline pump. At the same time, it adopts an excellent hydraulic model. Therefore, it also has the advantages of efficient, energy-saving operation and smooth operation, and the shaft seal adopts wear-resistant mechanical seal with no leakage and long service life.
In order to better meet the requirements of users, our unit has also developed a D-type with the water outlet located at the bottom. The inlet and outlet can be installed in different relative positions (,,), which is extremely convenient for installation and use.
Maintenance of D vertical multi-stage centrifugal pump:
Do not use the method of closing the inlet valve to control the flow.
Regularly check whether the outlet pressure fluctuation, pump body vibration, noise, cooling water inlet and outlet temperature, bearing temperature, current, etc. exceed regulations.
Pay attention to check the oil level in the oil tank. After one week of operation after overhaul, all lubricating oil should be replaced every hour.
When shutting down, close the pump output valve and slowly close the suction valve to ensure the minimum flow of the flow system
Finally, close the inlet and outlet valves to stop the motor and valves related to the system.
When the multi-stage pump stops, turn off the power supply of the auxiliary oil pump and the valve of the cooling system.
If the pump is to be inspected or has been out of use for a long time, drain out the liquid in the pump. If necessary, disassemble the pump, wipe it clean, apply anti-rust oil and keep it in a safe place.
The backup pump shall be turned on once per shift (not less than).
Maintenance and maintenance of the mechanical seal of D multi-stage centrifugal pump:
, the mechanical seal lubricating fluid should be clean and free of solid particles
, it is strictly forbidden to operate the mechanical seal in the condition of dry grinding
, starting The pump (motor) should be rotated several times before starting to avoid mechanical seal breakage and damage caused by sudden start.
Factory address: Liying Industrial Park, Rencheng District, Jining, Shandong
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