Destiny International

Hydraulic By Pass Filters

Case Study - Hydraulic Depth Filters

FILTERS that use a porous medium and catch particles using throughout the medium and not just the surface or layer. Medium can be fibrous cellulose, poly Propylene along with base paper or flat filter cloth.It normally will have an inner core an outer core, in some case, a shoot to encase the media.There is normally a base paper or filter cloth to act as a bed to flow of liquid through the media. Filter extraction hooks /ribbon/or eyelet help removal of filter after it has choked or used.

Types of Depth Filters

A) CELLULOSE PAPER DEPTH FILTERS                                   B) POLYPROPYLENE DEPTH FILTERS

A) CELLULOSE PAPER DEPTH FILTERS

Developed to increase oil change intervals half a decade back-the method is used worldwide for ultrafine cleaning of machine oils.
Hydraulic oil cleaning is blessed with usage of depth filtration, keeping machines well oiled and never prone to failures.
Long slender fiber pulp are used for making filter paper used for depth filters. Long fibers help absorb moisture, and the capillary action of the fibers help retain moisture in media. The round coil similar to a paper roll from a depth and various level of compression on outer core enable multi layer filtration assisted by base paper, skirting or other arrangement as per manufacturer designs.

Table for clearance Between Filter Condition & Preventives Indications​

FILTER CONDITION

PREVENTIVES/INDICATIONS

DUST DEBRIS AND VISIBLE CONTAMINANTS

NORMAL OPERATING AND OIL CONDITION.

CHECK TAN <1

LARGE QUANTITY OF CONTAMINANTS ON FILTER SURFACE.

INSPECT MACHINE AT THE EARLIEST, WEARING /ERODING OF MACHINE INTERNAL EXPECTED.

CRACKS ON FILTER LAYERS AND SPONGY AND SOFT

INDICATION OF MOISTURE OR HEAT EXCHANGER OR ACCIDENTAL INGRESS OF WATER.HIGH ALERT REQUIRE IMMEDIATE ATTENTION AND SOLUTION.

FILTER IS HARD WITH VISIBLE DIRT AND CRACKS.

FILTER REPLACEMENT REQUIRED, REACHED SATURATION.

SHRINKAGE OF FILTER

CHECK FOR HIGH PRESSURE EXPOSURE TO FILTER

VISIBLE PRESENCE OF METAL

GO FOR OIL ANALYSIS INTERNAL COMPONENT WEAR EXPECTED

FILTER APPEARS CLEAN

CHECK IF CHECK VALVE IS MALFUNCTIONING, PREVENTING OIL INLET TO FILTER.

DESIGNS PHOTOS OF DEPTH FILTERS USED IN INDUSTRIES HOUSING WITH REPLACEMENT FILTERS

DEPTH FILTERS TYPE 2 (FILTER CARTRIDGE) ​

hydraulic cartridge sdc 1888

SURAFACE FILTER VS DEPTH FILTER

The amount of surface area directly correlates to the solids loading capability and related pressure drop. Depth Filtration refers to a thicker media or multiple layers of media, forming a torturous path to retain particles.

FLOW DIAGRAM OF SURFACE FILTER VS DEPTH FILTER

SDC1888

FILTER CARTRIDGE

Hydraulic Depth Filters

Fresh Filter Cartridge

FILTER CARTRIDGE

EXPERTS INSERTING FILTER CARTRIDGE (PIC3)

FILTER CARTRIDGE INSTERTING
hydraulic Oil dehydration services

USED FILTER CARTRIDGE (PIC 4)

SUPER DUTY FILTER CARTRIDGE

SUPER DUTY FILTER CARTRIDGE

DEPTH FILTER ELEMENT TYPE -3

FILTER ELEMENTS

FILTER ELEMENT

FILTER ELEMENTS

EVIDNECE OF DELAYED FILTER CHANGES (1)

EVIDNECE OF DELAYED FILTER CHANGES (2)

EVIDENCE OF DELAYED FILTER CHANGES (2)

EVIDNECE OF DELAYED FILTER CHANGES (3)

EVIDENCE OF DELAYED FILTER CHANGES (3)

EVIDENCE OF METAL WEAR IN MACHINE

EVIDENCE OF METAL WEAR IN MACHINE

NOTE : CHANGE YOUR FILTER ATLEAST WHEN 80% SATURATED OR QUARTERLY OR EARLIER AS PER APPLICATION

CHANGE YOUR FILTER ATLEAST WHEN 80% SATURATED OR QUATERLY OR EARLIER AS PER APPLICATION
CHANGE YOUR FILTER ATLEAST WHEN 80% SATURATED OR

B) FILTER TYPE -2 POLYPROPYLENE DEPTH FILTERS

B)POLYPROPYLENE DEPTH FILTERS

FACTORS TO DETERMINE PERFORMANCE OF DEPTH FILTERS

Beta ratioYes

Efficiency

Yes

Dirt holding capacity

Yes

Moisture absorbing capacity

Yes

Micron rating

Yes
DimensionsYes

Some model of cellulose depth filters manufactured around the world.

  •  M-Series, E- Series, E-Series and more…
  •  A-Filters Inserts, B- Filters Inserts and more…
  •  SDC1888, Water glycol filter SDPC 2088, l depth filters and more…
  • Destiny International – India, 200HE, 100 Series, 50 Series , 30 Series and equivalents

We manufacture any size of cellulose filter in any quantity from its HQ in India : with a wide network offering filtration  system as a direct installation or mobile unit to suit any application. Even in the most aggressive environments Destiny International  can address the issues of moisture, particulate, varnishing, component failures due to poor oil hygiene.

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CELLULOSE DEPTH FILTERS