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Backflush screen changer
Backflush screen changer is used for recycling processes. As a kind of hydraulic screen changers, backflush screen changers are based on a proven double-piston design that operates without additional seals and is equipped with four screen cavities.

Backflush screen changer

Backflush screen changer Benefits:
Multiple screen usage
Simple operation and uncomplicated control
High operational reliability
Short material residence time
Leak-free mode of operation
Low pressure consumption
Flow channel geometry without any dead spots

Backflush screen changer Models:
The one type screen changer is the backflush solution for maximum screen service life. It is a highly versatile solution that can be deployed in a variety of applications such as flat films, pipes, blow mouldings, as well as fibres and coumpounding.
The other type screen changer is a constant-throughput backflush system with an integrated accumulator. Extremelly compact, it is the perfect solution for the direct processing of recycling material into 1A products (film, fiber, sections...) without the intermediate step of pelletizing.

Backflush screen changer application limits:
Temperature [C]: up to 350
Operating pressure [bar]: 300, 200
Differential pressure [bar]: to 100
Screen diameter [mm]: 4 x 30 to 4 x 300, 76 x 185 to 270 x 660
Filtration area [cm2]: 4 x 7 to 4 x 707, 2 x 128 to 2 x 1625

Both models exhibit ideal flow geometry. This makes the largest possible filter area available, facilitating the effective removal of contamination. What's more, the screen's back spill plates are designed so that 95 percent of the screen surface is in use.

Backflush screen changers are based on a proven double-piston design that operates without additional seals and is equipped with four screen cavities.
These backflush screen changers are used most commonly in continuous processes involving highly contaminated polymer melts that require self-cleaning of the screens.
Backflush screen changer is the ideal answer to today's requirements in terms of direct recycling processes, such as in RPET bottle flakes to film applications, where the tiniest difference in throughput will have an impact on the film quality.

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As one of screen changer manufacturers in China, Batte supplies extrusion screen changer, especially hydraulic screen changers.