Table of Contents
- 1 What is bowl purifier?
- 2 What are the parts of purifier?
- 3 Why is the purifier Bowl not closing?
- 4 What is back pressure in purifier?
- 5 What is the reason if the purifier speed is low?
- 6 What is difference between purifier and clarifier?
- 7 What happens to the medium in a purifier?
- 8 Where are the Purifiers located on a ship?
What is bowl purifier?
In a a disk-type purifier, a bowl shaped rotating element encases a stack of disks. The bowl itself sits atop the vertical bowl spindle which is driven by a worm gear and clutch assembly. The spindle and bearing absorbs the weight of the bowl assembly. Once operating, the bowl spins at approximately 7500 rpm.
What are the parts of purifier?
A centrifugal purifier consists of various parts such as the bowl, disc stack, gravity disc, electric motor, inlet-outlet ports, rotating shaft, friction pads, shafts, gearbox, and automation devices.
What are the major parts of marine purifier?
The main component of purifier is correct size gravity disc or dam ring which is responsible for creating an interface between the oil and water. 2) Clarifier: When a centrifugal is arranged to remove only impurities and a small amount of water, it is called as the clarifier.
What is sliding Bowl in purifier?
Sliding bowl is located below the top hood and sludge accumulates on the periphery on the sliding bowl. It’s kept lifted by makeup water. Sliding bowl is provided with Teflon seal. ( it seals tightly with the top hood) Operating slide.
Why is the purifier Bowl not closing?
Check the Level of Operating Water – If there is a separate operating water tank provided, check the water level in the same. If the operating water is not sufficient, the purifier bowl will not lift, resulting in the sludge ports remaining in the open position.
What is back pressure in purifier?
Back Pressure: The back pressure should be adjusted after the purifier is started. The back pressure varies as the temperature, density, viscosity of feed oil inlet varies. The back pressure ensures that the oil paring disc is immersed in the clean oil on the way of pumping to the clean oil tank.
Why back pressure is maintained in purifier?
Why starting current is high in purifier?
6. Note the current (amps) during starting. It goes high during starting and then when the purifier bowl picks-up speed and when it reaches the rated speed, the current drawn drops to normal value.
What is the reason if the purifier speed is low?
Reasons for the bowl speed low or purifier not getting the desired RPM are: Belt is slipping (if belt drive) Worn out gear system (if gear system) Bearing damaged.
What is difference between purifier and clarifier?
The key difference between purifier and clarifier is that the purifier consists of a dam ring to create a line of separation between fuel and water whereas the clarifier consists of a sealing ring to prevent the fuel tank from water and dissolved impurities.
Why is the purifier bowl not closing?
What is the purpose of sealing water in purifier?
To seal the water outlet & to prevent the overflow of oil from the water outlet. The gravity disc is important part of purifier, which set the location of the oil and water interface.
What happens to the medium in a purifier?
When the medium is in the bowl, the impurities such as sand and water having a higher specific gravity would be thrown to the side of the bowl, where they would be trapped. The medium would be free to flow through the purifier to a storage tank.
Where are the Purifiers located on a ship?
On a ship, the purifiers are usually found in the engine room. There are typically two types. One type is the fuel oil purifiers. These remove contaminants including water from the fuel oil. The other type is the lube oil purifiers which do the same job for the lubricating oil.
What happens to the water in a purifier?
After a preset time, the purifier would enter a dumping phase, where the captured impurities would be passed to the sludge tank for storage and later disposal. On a side note, taking in HFO at questionable ports are always a problem, where they’ll mix water, sand and all sorts of impurities will be pumped to you.
How is a purifier used to remove impurities?
A purifier is exactly what logic dictates that it would be. It is a device that takes an impure mixture of a substance, such as lubricating oil or diesel fuel, and removes the impurities using a physical process such as filtration or centrifugal forces, resulting in a purified substance (and explaining its name).