Peripheral Water Pump
Taizhou Sunlight Electric Machinery & Pump Industry CO.,Ltd was established in 1995 , which specialized in research, development and manufaturing peripheral pump,centrifugal pump,Jet pump,submersible pump,deep well submersible pump,booster pump , air compressor &mold etcs.Construction area 50,000 square meters ,300 employees ,Sale 900,000 pcs all kinds of water pump &150,000pcs air compressor in 2022.
Why Choose Us
Our factory
Construction area 50,000 square meters ,300 employees ,Sale 900,000 pcs all kinds of water pump &150,000pcs air compressor in 2022.
Our certification
Our company has past management system authentication ISO9001-2015,produts have won the CE certification,CCC authentication.
Sales market
The products are far sold to countries such as South America,Eastern Europe,Asia etc market.
Our products
We manufaturing peripheral pump,centrifugal pump,Jet pump,submersible pump,deep well submersible pump,booster pump , air compressor &mold etcs.
·Peripheral pump
·Liquid pumped temperature up to 60℃
·Clean water,non-aggressive liquid
·Peripheral pump
·Liquid pumped temperature up to 60℃
·Clean water,non-aggressive liquid
Electric Pressure Peripheral Pump
·Peripheral pump
·Liquid pumped temperature up to 60℃
·Clean water,non-aggressive liquid
·Self-priming peripheral pump
·Liquid pumped temperature up to 60℃
·Clean water,non-aggressive liquid with air
·Peripheral pump
·Liquid pumped temperature up to 60℃
·Clean water,non-aggressive liquid
·Peripheral pump
·Liquid pumped temperature up to 60℃
·Clean water,non-aggressive liquid
·Self-priming peripheral pump
·Liquid pumped temperature up to 60℃
·Clean water,non-aggressive liquid with air
What is Peripheral Water Pump
A peripheral pump is a close-coupled centrifugal pump with an impeller consisting of a large number of radial vanes on the outside edge. The impeller rotates in a concentric casing channel with the liquid flowing between the vanes and casing transmitting large amounts of energy leading to a large increase in pressure within the pump.
The inlet and outlet of the casing are separated by a strip of metal ensuring all fluid entering the inlet is discharged via the outlet.
They are typically designed for clean fluids due to the narrow clearances between the impeller vanes and pump casing meaning any solids would stop the impeller.
Peripheral Pump applications tend to be applications where a medium to high pressure liquid transfer pump is required of low viscosity which can be for hydro cyclone feed, filtration, transfer of fluids across large distances, jetting, and for display fountains.
Benefits of Peripheral Water Pump
Efficient performance
Peripheral water pumps are designed for high efficiency, ensuring effective water transfer and distribution.
01
Compact design
These pumps have a compact and lightweight design, making them easy to install and transport.
02
Self-priming capability
Peripheral water pumps are self-priming, meaning they can draw water from a lower level without external priming assistance.
03
Durability
They are built with durable materials, ensuring long-lasting performance even in demanding conditions.
04
Cost-effective
Peripheral water pumps are relatively affordable compared to other types of pumps, providing a cost-effective solution for water transfer applications.
05
Peripheral pumps are used in a wide range of industrial applications, irrigation / agriculture, boosting water pressure in municipal pumping systems and for many other other pumping requirements.
Motor
The motor is the source of power for a peripheral pump. This motor is powered by electricity in which it operates by converting the electrical energy into mechanical power. The electrical energy is supplied by the mains electricity line. The mechanical power is provided in terms of torque and speed depicted on the motor shaft.
Impeller
This is the part of the pump that rotates at high speed to create a vacuum in the pump. This vacuum is meant to force fluid from its source into the pump. Peripheral pump manufacturers design the impeller with radial vanes. Such vanes are used to rotate the fluid as it enters the pump.
Casing
This is the pump housing meant to seal off the atmosphere to the pump interior and prevent fluid leakage. The casing is designed to allow fluid to rotate between it and the impeller as the fluid kinetic energy is converted to pressure energy. This high-pressure energy is used to move the fluid to the required destination. Peripheral pump manufacturers produce the casing from high strength materials like stainless steel or cast iron to ensure it can withstand high fluid pressure.
Suction pipe and valve
The suction pipe is used to connect the pump inlet port to the source of the liquid like a tank. This is the pipe that is used to convey the liquid from its source into the pump when the impeller starts rotating. The suction valve is used to regulate the amount of fluid that flows into the pump. Peripheral pump manufacturers also design this valve with a strainer to help filter out any foreign materials from getting into the pump and causing a blockage.
Discharge pipe and valve
The discharge pipe connects the pump to the pipe network. The valve is used to regulate the fluid flowing from the pump to the pipeline.
Material of Peripheral Water Pump
Cast iron is a widely used material in water pump construction due to its affordability and excellent strength properties. It is known for its high resistance to wear, making it suitable for handling abrasive fluids and solids-laden liquids. Cast iron pumps are commonly used in applications such as irrigation, drainage, and wastewater management.
Stainless steel is highly regarded for its exceptional corrosion resistance, making it a popular choice for water pump construction. It can withstand chemically aggressive environments, including seawater, acidic or alkaline solutions, and various chemicals. Stainless steel pumps are commonly used in industries such as food processing, pharmaceuticals, and chemical processing, where hygiene and resistance to corrosion are critical.
Bronze is a versatile material known for its excellent resistance to corrosion, particularly in marine environments. It offers good strength, durability, and thermal conductivity. Bronze pumps are commonly used in applications where resistance to seawater and brackish water is required, such as marine, offshore, and coastal applications.
Plastic, specifically engineered thermoplastics like polypropylene (PP) and polyvinyl chloride (PVC), is widely used in water pump construction due to its corrosion resistance, lightweight nature, and low cost. Plastic pumps are commonly used in applications involving the handling of chemicals, acids, and alkaline solutions.
How to Maintain Peripheral Water Pump
Step 1: Check pump discharge pressure
You can calculate the head pressure of your pump by observing the difference between the suction and discharge gauges. Check that these are within the manufacturer's recommended range.
Step 2: Check vibration levels
Excessive vibration can be an indication of imminent pump failure. Causes include damaged bearings, improper pump alignment or obstructions in the suction and discharge lines.
Step 3: Check all seals
Pumps rely on seals to avoid leaks. However, rubber seals can lose quality over time and eventually crack. If there are signs of leakage, it indicates a seal issue. You may need to open the pump and replace those that are worn.
Step 4: Check bearing condition
Ensure bearings spin freely and have sufficient lubrication. Lubricants should not bubble. If they do, you may need to add more to dissipate excess bearing heat.
Working Principle of a Peripheral Pump
In essence, peripheral pumps are niche products that sit between displacement pumps and centrifugal pumps. In many applications in the industry, the medium is pumped in a peripheral channel, which is why we call it that. This pump works as a volume displacer by sucking the liquid through the suction flange. The liquid is then directed into an annular channel.
A peripheral impeller rotates within this channel, centrifugally transforming the liquid. Peripheral impellers are special impellers that have a large number of small radial vanes arranged around their perimeter. The blades in the impeller impart great kinetic energy onto the liquid as it exits the pump via the discharge flange after passing through the annular channel.
Peripheral pumps contain impellers with many small radial blades (with dual inputs) arranged along their peripheral area. Within the rotor, centrifugal forces create a circulation of the flow between the impeller and casing channel. A fluid and an impeller have essentially the same peripheral speeds, but the fluid in the casing channel has a significantly lower speed. Thus, the fluid flows spirally from the casing channel to the impeller, which occurs several times along the perimeter.
As more vortices form, more energy is transferred, and the produced pressure is higher. With a reduced flow, the number of spirals increases, so there is a greater transfer of energy and a higher amount of power absorbed in partial-load conditions.
Difference Between Centrifugal and Peripheral Pumps
At first glance, centrifugal and peripheral pumps may appear similar, but upon closer inspection, we find significant differences in terms of durability, pressure, water flow and ease of use. These differences are crucial when selecting the right pump for your specific needs.
Pump purpose
If your primary need is for higher pressure, extended service life and relatively simple maintenance, the centrifugal pump is probably the most suitable choice. These pumps are known for their robustness and efficiency in situations requiring constant flow and high pressure. In contrast, peripheral pumps, while more affordable and suitable for water lifts at significant heads, can experience problems such as turbine scaling if not used for an extended period of time.
Water head
This is a critical factor in choosing your pump. If you need to pump water at elevations above 14 meters, a peripheral pump is more suitable, as these pumps are designed to work efficiently in these conditions, despite their lower flow rate. Centrifugal pumps, although powerful, may not be as efficient in these high head situations.
Available budget
Cost is an important factor in decision making. Peripheral pumps are typically more affordable, costing up to half the price of a centrifugal pump. This price difference makes peripheral pumps an attractive option for applications with limited budgets, as long as they meet your specific needs in terms of pressure and lift.
If you have ever seen a side channel pump in action, this is fairly similar. The key difference of these from centrifugal pumps is that the curves do not flatten if the flow of liquid slows down. The curves of the pump are straight lines which allows for maximum heads at low flows and low heights at peak flows.
Many applications use these kind of pumps for a variety of reasons now. A great bonus of them is that gases can pass through with no interruption to the liquid flow or chance of bearings being damaged due to dry running. They need very low suction heads and have narrow columns to stop any abrasive material entering. One of the main plus points of peripheral pumps is that their steep Capacity/Head curves are perfect for pressure sensitive systems.
Peripheral Pump Troubleshooting Guide
|
Problem |
Possible Cause |
Remedy |
|
No Liquid Delivery |
Motor Not Operational |
Check Motor windings, phases and replace if required |
|
Misalignment |
Check coupling alignment, rubber condition and if coupling has become disengaged. |
|
|
Solids within pump |
Check suction strainer, and pump internals for signs of solids |
|
|
Bearing Seizure |
Replace bearings |
|
|
Inlet / Discharge valve closed |
Open all valves |
|
|
Lack of liquid |
Check liquid level in tank |
|
|
Direction of rotation |
Check direction of operation |
|
|
Strainer blocked |
Backwash filter, or remove, clean and refit |
|
|
Manometric Head too high |
Check pump design against system design pressure |
|
|
NPSH |
Check NPSHR meets NPSHA |
|
|
Vapor lock |
Ensure pump is not drawing excess air, or small amounts of fluid are not gassing within pump. |
|
|
Excessive Power Consumption |
Particles in discharge |
Disconnect discharge, flush and refit |
|
Collapsed Hose |
Ensure rigid hoses are fitted |
|
|
Pressure, viscosity, or fluid temperature outside design criteria |
Check pump design against fluid characteristics and system requirements |
|
|
Particles within casing seizing impeller |
Fit suction strainer. Remove all particles. Check impeller edge is straight and vanes are not bent |
|
|
Misalignment |
Check coupling alignment, rubber condition and if coupling has become disengaged. |
|
|
Parts Worn |
Replace parts worn such as bearings, mechanical seals, shaft. |
|
|
End of Service life or adverse pumping conditions |
Check installation and maintenance history of pump |
|
|
Leakage from Pump |
Seals not installed correctly |
Refit / replace seals |
|
Dry running |
Replace seals. Correct system to prevent dry running |
|
|
O Rings damaged |
Check for particles, or seals trapped / twisted in casing |
|
|
Worn Shaft |
Shaft is now undersized due to wear. Replace shaft and seal |
|
|
Excess System Pressure |
System pressure is causing seals to leak. Check for blockages |
|
|
O Ring Failure |
Check o ring for signs of damage |
|
|
Fasteners lose |
Check torque of bolts |
|
|
Thermal Expansion |
Product could expand if heated within pump from recirculating fluid. Ensure system is designed to prevent this. |
|
|
Excessive static pressure |
Check system and pump design pressures |
|
|
Seal Faces Damaged |
Check for particles and replace / clean filter. If frequent look to replace seal with harder material, or magnetic drive pump. |
|
|
Reduced Flow / Pressure Output |
Incorrect Speed |
Check VFD Settings |
|
Motor Faulty |
Check windings, and phases |
|
|
Discharge Pipe Blocked |
Clear blockage, flush and refit |
|
|
Strainer blocked |
Clean filter, backwash and refit |
|
|
Inlet pipe dia |
Increase inlet pipe diameter, or shorten if length is long |
|
|
Foreign object in suction line |
Check strainer. Flush inlet pipework |
|
|
End of service life |
Replace pump |
|
|
Excessive Noise |
Particles within Pump |
Clear pump, strainer and check vanes for damage |
|
Parts worn |
Check for signs of wear |
|
|
Motor Speed |
Check Speed. Also check bearings and ensure electrical engineer checks motor. Check for air ingress in suction tank. |
Our company has past management system authentication ISO9001-2015 and carries out the operation strictly according to the ISO9001 quality control system standard and focus on details of each quality.
FAQ
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