Multistage Centrifugal Pump Horizontal Cast Iron Centrifugal Pump

• Max.Head: 1000m
• Max.Capacity: 850m3/H
• Driving Type: Motor
• Material: Cast Iron
• Structure: Multistage Pump
• Power: Electric
• Model NO.: LD
• Start Up: Electric Pump
• Application: Submersible Pump, Clarified Water Pump, Sewage Pump, Slurry Pump, Oil Transfer Pump, Chemical Pump
• Performance: Automatic Pump
• Theory: Centrifugal Pump
• Color: Black
• Transport Package: Wooden Box Sealed
• Specification: caliber: 20~300mm
• Trademark: Lyson
• Origin: China
• Production Capacity: 5000pieces/Month

Product Description

                                                                      Introduction
LDmultistage centrifugal pump is to have the same function of more than two centrifugal pumps together, the structure of the fluid channel, the performance of the first level of the media pressure relief port and the second level of the import communication, the second level of media leakage Pressure port is connected with the third level of imports, so the series of institutions formed a multi-stage centrifugal pump.The significance of multistage centrifugal pumps is to increase set pressure.
The pump for the delivery of solid particles, the temperature is not higher than 80 ºC of water or physical and chemical properties similar to clear liquid, suitable for mine and urban water supply and drainage projects.



                                                                       Features

1, multi-stage centrifugal pump for the vertical structure, with a small footprint, pump center of gravity coincident with the center of the pump, which runs smoothly, small vibration, long life.

2, multi-level centrifugal pump diameter and the same horizontal centerline, without changing the pipeline structure, can be directly installed in any part of the pipeline, the installation is extremely convenient.

3, the motor plus rain cover can be placed directly in the outdoor use, without the need to build pump room, greatly saving capital investment.

4, multi-stage centrifugal pump head can be changed by pump series (number of impeller) to meet different requirements, it is applicable to a wide range.
Multi-stage centrifugal pump structure
Multi-stage centrifugal pump structure
5, the shaft seal with carbide mechanical seal, reliable seal, no leakage, mechanical loss.

6, energy efficient, beautiful appearance.

7, Note 50 caliber inner casting above forming.
                                       Application

Multistage centrifugal pump for the delivery of solid particles, the temperature is not higher than 80 ºC of water or physical and chemical properties similar to clear liquid, suitable for mine and urban water supply and drainage projects.
, using the national recommended energy efficient hydraulic model, with high efficiency and energy saving, wide range of performance, safe and stable operation, low noise, long life, easy installation and maintenance; By changing the pump material, sealing form and increase Cooling system, can transport hot water, oil, corrosive and abrasive media.

                                                                          Parameter

T≤80ºC
Q=150~850m³/h	H=45~100m
n-1480/2980r/min	P=45~1400
Dna=200~300mm	DNm=150~300mm

                                                                               Precautions

1, multi-stage centrifugal pump to check before starting

Lubrication oil name, model, the main performance and the number of filling is in line with the requirements of technical documents; bearing lubrication system, sealing system and cooling system is intact, the bearing oil, water is unobstructed;

Drive the pump rotor 1 ~ 2 turn, check the rotor for friction or stuck phenomenon;

In the vicinity of the coupling or belt guard, etc., whether there is interference with rotation of debris;

Pump, bearing, motor foundation anchor bolts are loose;

Pump work system valves or ancillary devices should be in the pump load minimum position, should close the exit control valve;
Multistage centrifugal pump
Multistage centrifugal pump

Start multi-stage centrifugal pump to see if the steering of the impeller is the same as that of the design steering wheel. If it is inconsistent, the impeller must stop rotating completely and adjust the motor wiring before restarting.

2, multi-stage centrifugal water pump

Before starting the pump, the pump housing and suction pipe must be filled with water. This is because the multi-stage centrifugal pump suction port vacuum can not be formed and maintained in the presence of air.

3, multi-stage centrifugal pump warm pump

Pumps that deliver hot liquids, such as boiler feed pumps in power plants, must warm the pump before starting the multistage centrifugal pump. This is because when the feed water pump is started, the high-temperature feed water flows through the pump, causing the temperature of the pump body to rise quickly from room temperature to 100-200 ° C, which causes the temperature difference between the inside and outside of the pump and between the components. If there is not enough Heat transfer time and appropriate measures to control the temperature rise will cause uneven expansion of the pump around, resulting in deformation of the various parts of the pump, wear, vibration and axle suspension accidents.
                                                                  Maintenance

Fold cleaning items

First, scrape the inner and outer surface of the impeller and seals and bearings and other places accumulated scale and rust and other objects, and then water or compressed air cleaning, blowing clean.

Second, clean the housing surface of the joint accumulation of grease and rust.

Third, clean the water seal tube and check the tube is smooth.

Fourth, clean bearings and bearings, remove grease, and then wash the oil ring and oil surface meter. Ball bearing application of gasoline cleaning.

Fifth, temporary zero assembly, parts, after cleaning should be oiled protection.

Fundamentals of folding and cleaning

1, to ensure that meet the requirements of the degree of cleanliness of parts, in the repair, a variety of mechanical parts, the degree of cleanliness requirements are not the same. In the assembly, the cleaning requirements of the mating parts are higher than those of the non-matching parts, the moving parts are higher than the static parts, and the precision parts are higher than the non-precision parts. For spray, plating, bonding the surface of the workpiece, the cleaning requirements are high. Cleaning must be based on different requirements, take a different cleaning agent and cleaning

Method to ensure the required cleaning quality.

2, to prevent corrosion of parts, precision parts do not allow any degree of corrosion. When the parts to be parked for some time after cleaning, should consider the antirust ability of cleaning fluid or consider other anti-rust measures.

3, to ensure safe operation, to prevent fire or poison the human body and cause environmental pollution.