The following is aboutDouble suction pumpDetailed data and explanations for the selection guide:

1.Double suction pumpA basic overview of

Double suction pumpis a kind ofcentrifugal pump, its design feature is that liquid enters the impeller from both sides at the same time, thereby balancing the axial force, and is suitable for large flow and low head situations.Double suction pumpIt is widely used in municipal water supply, industrial water supply, air conditioning circulating water, fire protection systems and other fields.

2.Double suction pumpThe basic structure of

2.1 Pump body

• Material: Cast iron, stainless steel, bronze, etc.
• design: Horizontally split structure for easy maintenance and repair.

2.2 Impeller

• Material: Cast iron, stainless steel, bronze, etc.
• design:Double suction impeller, liquid enters the impeller from both sides at the same time.

2.3 Pump shaft

• Material: High strength steel or stainless steel.
• Function: Connect the motor and impeller to transmit power.

2.4 Sealing device

• type: Mechanical seal or packing seal.
• Function: Prevent liquid leakage.

2.5 Bearings

• type: Rolling bearing or sliding bearing.
• Function: Supports the pump shaft and reduces friction.

3.Double suction pumpworking principle

Double suction pumpThe working principle is similar to that of a single-suction pump, but the liquid enters the impeller from both sides at the same time, balancing the axial force and improving the stability and efficiency of the pump. The liquid gains kinetic energy under the action of the impeller, enters the volute part of the pump body, converts the kinetic energy into pressure energy, and is discharged through the water outlet pipe.pumpbody.

4.Performance parameters

4.1 Flow (Q)

• definition: The amount of liquid delivered by the pump per unit time.
• unit: Cubic meters per hour (m3/h) or liters per second (L/s).
• scope: Typically 100-20000 m3/h, depending on pump model and application.

4.2 Lift (H)

• definition: The pump can raise the height of the liquid.
• unit: Meter (m).
• scope: Typically 10-200 meters, depending on pump model and application.

4.3 Power (P)

• definition: The power of the pump motor.
• unit: kilowatt (kW).
• Calculation formula：( P = \frac{Q \times H}{102 \times \eta} )
  • (Q): flow rate (m3/h)
  • (H): Lift (m)
  • ( \eta ): efficiency of the pump (usually 0.6-0.8)

4.4 Efficiency (η)

• definition: The energy conversion efficiency of the pump.
• unit:percentage(%).
• scope: Typically 70%-90%, depending on pump design and application.

5.Selection guide

5.1 Determine demand parameters

• Flow(Q): Determined according to system requirements, the unit is cubic meters per hour (m3/h) or liters per second (L/s).
• Lift(H): Determined according to system requirements, unit is meter (m).
• Power(P): Calculate the power requirement of the pump based on the flow rate and head, in kilowatts (kW).

5.2 Select pump type

• Horizontal double suction pump: Suitable for most occasions, easy for maintenance and repair.
• Vertical double suction pump: Suitable for occasions with limited space.

5.3 Select pump material

• Pump body material: Cast iron, stainless steel, bronze, etc., selected according to the corrosiveness of the medium.
• Impeller material: Cast iron, stainless steel, bronze, etc., selected according to the corrosiveness of the medium.

5.4 Select brand and model

• Brand selection: Choose well-known brands to ensure product quality and after-sales service.
• Model selection:Select the appropriate model based on demand parameters and pump type. Refer to the product manuals and technical information provided by the brand.

6.Application occasions

6.1 Municipal water supply

• use: Mainly used in urban water supply systemspumpstand.
• flow: Usually 500-20000 m3/h.
• Lift: Usually 10-150 meters.

6.2 Industrial water supply

• use: Used in cooling water circulation systems in industrial production.
• flow: Usually 200-15000 m3/h.
• Lift: Usually 10-100 meters.

6.3 Agricultural irrigation

• use: Irrigation systems for large areas of farmland.
• flow: Usually 100-10000 m3/h.
• Lift: Usually 10-80 meters.

6.4 Building water supply

• use: Used in water supply systems of high-rise buildings.
• flow: Usually 100-5000 m3/h.
• Lift: Usually 10-70 meters.

7.Maintenance and care

7.1 Regular inspection

• Check content: The operating status of the pump, sealing device, bearings, pipes and valve sealing, etc.
• Check frequency: It is recommended to conduct a comprehensive inspection once a month.

7.2 Regular maintenance

• Maintain content: Clean the pump body and impeller, check and replace seals, lubricate bearings, calibrate control system, etc.
• Maintenance frequency: It is recommended to perform comprehensive maintenance every six months.

7.3 Troubleshooting

• Common faults: Pump does not start, insufficient pressure, unstable flow, control system failure, etc.
• Solution: Troubleshoot according to the fault phenomenon, and contact professional technicians for repair if necessary.

Ensure you choose the right one with these detailed selection guidesDouble suction pump, thereby effectively meeting the needs of the system and ensuring that it can work stably and reliably in daily operations.