Page 13 - Eaton - Automatic self-cleaning family

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TECHNICAL INFORMATION

Model 2596 Automatic Self-Cleaning Strainers
Mechanically Cleaned Filters & Strainer
Revolutionary Arm

5
Straining Cycle
Model 2596 strainer: V-Shaped
Profile Wire
How it Works 2 Strained Clean
6 Continuous Flow
The debris-laden fluid enters the
strainer’s bottom chamber (1)
where the line velocity is reduced. 7
Flow continues upward, passing DuraWedge®
radially through the sealed screen 3 Screen Element
element, (2) which traps debris on Reinforcing Debris-
the inside of the screen. The flow Bands Laden
is uninterrupted and the strained Collector Bars Flow
From
fluid flows to the outer Inlet
annulus (3) and exits 4 1 Top
through the outlet nozzle (4). View
Backwash cleaning is accom- Debris-
Strained
plished by utilizing the pressure Continuous Laden
Flow
differential between line pressure Flow From
and atmosphere. A high-efficiency, Inlet
full flow backwash arm (5) Backwash
extending the entire length of the Arm Closed To
Atmosphere
screen element, rotates slowly
inside of the screen and is piped
to atmosphere. The port shoe (6) is
in proximity to the screen and its
opening is equivalent to the Designed to monitor
“debris collector” sections created and operate the Backwashing Cycle
by the convolutions and/or vertical backwash cleaning Debris-
collector bars in the element. system, Eaton auto- Port shoe on backwash arm Laden Flow
matches “debris collector
From Inlet
When cleaning is required the matic control section” on screen
automatic backwash valve opens systems are simple
the system to atmosphere, to operate, reliable, Reverse
Flow
causing a high velocity reverse and easily maintained. They are set
flow across the isolated section of to clean on differential pressure Strained Clean
the screen. Dirt and debris are with a timed backup. The design Continuous
dislodged from this segment of allows field adjustments to suit the Flow
the screen into the backwash arm demands of the service conditions,
and out the strainer through the ensuring effective cleaning with a
backwash piping (7). During the minimum use of backwash fluid. Top
backwashing cycle the main flow Systems are available in automatic View
is uninterrupted and continues to intermittent or continuous back-
be strained in the normal manner. washing modes.
Reverse
Flow
Backwash
Dirty Fluid Arm
Discharged Opened To
Through Atmosphere
Backwash
Strained Piping
Continuous
Flow During backwashing,
Backwash arm rotates only a small portion of the
around the screen to clean
every section over time. screen is cleaned at any
given time. The majority
of the screen continues to
screen as normal.