Q HOW TO SELECTED THE FILTER PRESS ?
A Please kindly shared us your Slurry be filtrated detial as: Slurry composition, Slurry temperature, PH value, Slurry concentration (dry solid content in slurry) g/L, or %, Solid Particle size (mm), Slurry feed rate (m3/h), Filter press operated hours (h/d), Automation requirement, in as much detail as possible and return to us, JWK look forward to submit to your best proposal.
Q HOW TO SELECTED THE FILTER PRESS CAPACITY ?
A When estimating the filter press sizing requirements, Firstly determine the customer’s processing requirements, Second select the appropriate filter press chamber volume per cycle that corresponds with the customer’s slurry % dry solids content and cake moisture after filtrated.
Q WHAT IS THE HIGHEST PRESSURE I CAN PUMP TO FILTER PRESS?
A JWK Filter presses are designed generally for two pressures, 7 and 15 bar (100 and 225 psi), although special filter presses are made for higher pressures. Check the filter press O & M or nameplate to ensure you do not exceed the pressure your filter press was designed for.
Q HOW DO I CLEAN MY FILTER CLOTHS?
A Use a spatula to scrape cake off the surface. Cake buildup can cause bending of the filter press skeleton. Excessive bending can lead to filter press failure ! Keep the cloths and plates as clean as possible, especially along the sealing surface of filter plates.
Q HOW CAN I KNOW WHEN FILTER CLOTHS ARE DIRTY ?
A Usually you will need a longer cycle time to achieve the same cake dryness. You may also notice cake or discharge flow water is less.
Q WHAT IS FILTER CLOTH SPEC?
A In addition the cloth material, and other critical data is “CFM” or cubic feet per minute, which refers to cloth permeability.
Q How Do I Change Head Plate Cloth
A Unlike intermediate filter cloths, the head-plate (end and tail) cloth do not have a sewn-in center feed eye.
The head plate cloth would be installed as described in the previous question; however, the head-plate cloth must have the center feed hold cut before installation.
To do this, remove the old head cloth by first removing the center feed assembly‘s clip nut. Then, tap the corners of the new end-cloth into the head-plate making sure it is positioned correctly.
Q What is the best feed pump for a filter press?
A Many pump types are used with good results, depending upon the characteristics of the material being processed. Air diaphragm pumps do not shear flocculated slurries and are the most common type of pump used. An added advantage to this type of pump is that the air drive stalls when filtration is complete.
Positive displacement pumps are used on high pressure filter press.
Q What is open filtrate discharge?
A Open Discharge is where the filtrate is discharged externally to the filter plate with no drain eyes in the corners of the filter plate.
The filtrate will drain into an open trough (launder) running the length of the Filter Press.
The big advantage is the easy visual identification of a failed filter cloth – that plate will run dirty when compared with the others.
Q What is closed filtrate discharge?
A Closed Discharge is where the filtrate is discharged internally to corner drain eyes. In this design, all of the filtrate goes to the feed end of the filter press, ideal in instances where the filtrate needs to be contained due to pH or odor. This configuration is required in instances where the filter cake needs to be washed or air-blowing dried.