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Home Service FAQs FAQ of coal-fired boilers Why don’t the pumps of coal-fired boilers absorb water?

Why don’t the pumps of coal-fired boilers absorb water?

29 Dec 2023


If the pumps of a coal-fired boiler are not absorbing water, it could be due to several reasons. It's essential to diagnose the issue accurately for an effective solution. Here are some common causes:

Air Locks in the Pump or Suction Line: If there is trapped air within the pump or the suction line, it can prevent the pump from creating the necessary vacuum to draw water.

Low Water Level in the Feed Tank: If the water level in the feed tank is too low, the pump may not have enough water to draw upon.

Clogged Suction Strainer or Filter: A blockage in the suction strainer or filter can restrict water flow to the pump.

Pump Impeller Issues: Damage to the impeller, such as wear, corrosion, or clogging with debris, can impair the pump's ability to effectively move water.

Incorrect Pump Priming: Improper priming of the pump can lead to air being trapped inside, hindering its ability to draw water.

Leakages in the Suction Line: Leaks in the suction line can allow air to enter the system, which reduces the pump's efficiency in drawing water.

Mechanical Failure or Damage: Mechanical issues such as bearing failure, seal leakage, or damage to the pump components can affect its operation.

Electrical Issues: Electrical problems, such as issues with the motor or power supply, can prevent the pump from operating correctly.

Incorrect Pump Installation or Setup: If the pump is not correctly installed, especially concerning the height differential between the pump and the water source, it may struggle to draw water.

Valve Issues: Valves in the wrong position (closed or partially closed) in the suction or discharge line can restrict water flow.

Pump Speed: If the pump is running at an incorrect speed, it may not generate enough suction to draw water.

To resolve the issue, it's important to:

Conduct a thorough inspection of the pump and the associated systems.
Ensure the pump is properly primed.
Check for and repair any leaks in the suction line.
Clean or replace clogged filters or strainers.
Repair or replace any damaged or malfunctioning components.
Verify that all valves are in the correct position.
Ensure the electrical system powering the pump is functioning correctly.
Make sure the water level in the feed tank is adequate.
In many cases, regular maintenance and inspection can prevent such issues from occurring. If the problem persists or is complex, consulting a professional or the pump manufacturer is advisable for specialized guidance.

 

ZOZEN Boiler is a well-known industrial boiler manufacturer that has a range of products, including coal-fired boilers. Their coal boilers are known for their efficiency, reliability, and durability. Here are some aspects you might consider if you're interested in ZOZEN's coal-fired boilers:

Boiler Efficiency: ZOZEN's coal boilers are designed to achieve high thermal efficiency. This means they can convert a higher percentage of coal into thermal energy, reducing fuel consumption and operating costs.

Environmental Compliance: They often incorporate technology to reduce emissions, making them compliant with many environmental regulations. This includes systems for reducing NOx emissions and controlling particulate matter.

Range of Sizes and Capacities: ZOZEN offers coal boilers in various sizes and capacities, catering to different industrial needs. This range allows you to choose a boiler that matches your specific steam or hot water requirements.

Advanced Control Systems: Many of their boilers are equipped with advanced control systems for easier operation and monitoring. This can include features like automatic feed water regulation, temperature control, and safety checks.

Durability and Reliability: ZOZEN boilers are known for their robust construction and reliable performance, which is critical in industrial settings where downtime can be costly.

After-Sales Support and Service: ZOZEN provides strong after-sales support, including installation guidance, operational training, maintenance services, and parts supply.

Customization Options: They often offer customization options to meet specific requirements, such as modifications for particular fuel types or integration with existing systems.

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