Page 9 - Eaton - Automatic self-cleaning strainers

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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 6 2 Strained Clean
The debris-laden fluid enters the Continuous Flow
strainer’s bottom chamber (1)
where the line velocity is reduced. 7
Flow continues upward, passing 3 DuraWedge®
radially through the sealed screen 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
“debris collector” sections created Designed to monitor Backwashing Cycle
by the convolutions and/or vertical and operate the Debris-
collector bars in the element. backwash cleaning Port shoe on backwash arm matches Laden Flow
“debris collector
system, Eaton auto- section” on screen From Inlet
When cleaning is required the
automatic backwash valve opens matic control Reverse
the system to atmosphere, systems are simple Flow
causing a high velocity reverse to operate, reliable,
flow across the isolated section of and easily maintained. They are set Strained Clean
the screen. Dirt and debris are to clean on differential pressure Continuous
Flow
dislodged from this segment of with a timed backup. The design
the screen into the backwash arm allows field adjustments to suit the
and out the strainer through the demands of the service conditions,
backwash piping (7). During the ensuring effective cleaning with a Top
backwashing cycle the main flow minimum use of backwash fluid. View
is uninterrupted and continues to Systems are available in automatic
be strained in the normal manner. intermittent or continuous back-
washing modes. Reverse
Flow
Backwash
Dirty Fluid Arm
Discharged Opened To
Through Atmosphere
Backwash
Strained Piping
Continuous
Flow During backwashing, only a small
Backwash arm rotates portion of the screen is cleaned
around the screen to clean at any given time. The majority of
every section over time. the screen continues to screen
as normal.