Notes on CNQ100 KOSUN Desilter Assembly and Adjustment

Nov 06, 2013

 KOSUN Desilter is the third-phase drilling fluids solids control equipment, used to separate solid particles between 15 and 44 μm in diameter. Its cones are made from polyurethane materials and have long lifespan. Desilter has a clamp structure which makes it easy to maintain.It is compact and takes up small footprint. Drilling Desilter, Drilling Desilter Cones. 

Notes on CNQ100 KOSUN Desilter Assembly and Adjustment

1. Connect the stock outlet of centrifugal pump and stock inlet of desilter together with 6” rubber hose. The gas holes atop overflow pipe are used to prevent siphonage inside. Some small amount of drilling fluids will leak via them when desilter is working. However, the hole should not be blocked especially artificially, or the machine’s performance will be affected. 

2. Desilter pipe manifold, whether they are inlet main line or outlet main line, are linked by flange at either end both to allow flow-in and -out of liquid. The joint of overflow main line can rotate at any angle in order to install 8” rubber hose into another compartment of mud tank. Inlet pipe and overflow pipe should form 90° angle when they are installed. 

3. Screen box fixation devices should be turned on before starting desilter. 

4. Desander can be adjusted via the adjustment of Centrifugal Pump outlet pressure.

5. Screens

  Screen lifespan and efficiency will be greatly affected by how well screens are assembled. Try to prevent screen from being artificially damaged. Straighten the screen, or screens will be rapidly worn due to “friction” between screens and supporting strips when shale shaker is working; but they cannot be too tightened, or they will be rapidly damaged or directly torn under over great prestress.When crooked or damaged, supporting strips should be straightened and replaced. 

6. Slip locking mechanism

   It is aimed at locking screens and tightening winding shaft. Winding shaft can be locked by tightening slip with screw. In order to prevent the mechanism from rusting away, it is better to lubricate it with butter every time when screens are replaced. 

7. Maintenance of Screens:

  It is forbidden to scratch or slap them with shovel or other iron tools and hard shovel. Apply screens with different mesh based on drilling fluids performances. It is best to use screens with thinner mesh for better efficiency when it is ensured that drilling fluids will run away. 

Maintenance and Keep-up

Maintenance regulations must be implemented on screen maintenance, reparation and cleanup. Failed or damaged components should be adjusted, screwed, lubricated, cleaned, replaced when accumulative working time is above 500 hours. When above 4000 hours. Tightening shaft of screen box should be examined and replaced, taper cylinders and spiral case changed and electric motor insulation property examined.