feluwa high pressure coal slurry pump failure hose damage
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Recently, our company's high-pressure coal slurry pump FELUWA (hose, flat diaphragm combination, gasifier pressure 4.0Mpa) has experienced many failures. One of them is that the hose has a short operating life (the factory claims that it is at least 8000 hours, but it is currently unreachable). There have been holes and cracks many times. We have also communicated with the factory and are still exploring and verifying. I would like to ask colleagues who have used and repaired this pump, have you seen this kind of damage here? Is there any solution? What is the lifespan of your hose?
Your refueling method may be wrong, or the exhaust may not be drained cleanly, or the exhaust check valve may be faulty.
The space between the flat diaphragm and the hose is filled with antifreeze. Under the guidance of the manufacturer, the installation life is less than 4,000 hours. This type of pump does not have an antifreeze exhaust setting.
It's impossible, it's on every cylinder.
In our company, hydraulic oil is added between the diaphragm and the hose, but no antifreeze is added.
During the test run of the pump, open the exhaust plug, drain the antifreeze in the middle until it stops dripping, and then install it.
During the test run of the pump, open the exhaust plug, drain the antifreeze in the middle until it stops dripping, and then install it.
Look at this photo. Your pump is a double hose pump. We also have this type here. This type has a drain port. The most common problem here is a pump with a hose and a flat diaphragm combination.
Double hose pumps have this requirement. The problem we have is the pump type with a flat diaphragm and hose combination.
After many failures, after comprehensive analysis and calculation of data, the principle and cause of the failure have a more basis and accurate judgment than foreign parties. It is currently being processed and will take time to be further verified. We hope that this pump problem can be solved.
I had experienced a ruptured diaphragm before, and it was basically the same as this, with a round hole in the upper part.