Automatic Backflush Rotary Screen Changer

Polymer melt filtration is a critical process for ensuring the quality and production efficiency of rubber and plastic products, and its role extends beyond the field of material recovery. The Zhengzhou Batte Rotary Filtration System enables continuous operation and stable pressure output, making it perfectly suited to meet the filtration requirements of various production conditions.

The rotary filtration system consists of three main components: the inlet module, the outlet module, and the rotating filter disc between them. The system is sealed by metal-to-metal seals featuring extremely narrow gaps and very hard, flat surfaces. This ensures reliable and long-lasting leak-free operation.

Filter elements are arranged in a ring on the filter disc and rotate with it, sequentially passing through the melt flow channels. As the melt flows through the filter mesh, internal impurity particles are effectively trapped, causing the system pressure differential to rise gradually. The control system detects changes in the pressure differential in real time and drives the filter disc to rotate intermittently at small angles. This continuously removes the contaminated filter mesh areas from the melt flow path while simultaneously bringing clean filter mesh into operation, ensuring that the effective filtration area is never reduced throughout the process.

Advantages of Rotary Filters

Constant Pressure and Process Conditions: Production can continue at a constant pressure even during screen changes, and a fully adjustable backflush system minimizes material loss. If required, we can achieve filtration precision as fine as 1 micron. A consistent filtration area ensures optimal product quality and increased production capacity. Even at melt pressures as high as 500 bar, the system remains leak-free, with completely constant processing and pressure conditions.

Consistently High Product Quality: Not only does this reduce or eliminate product breakage and defects, but the filter’s constant process and pressure operation also enables the production of finished goods with tighter tolerances. Product thickness can be minimized.

Minimized Backwash Waste: Polymer loss during backwashing is minimal and typically 5–10 times lower than with conventional backwash filters. Even when using highly contaminated materials, backwash waste typically accounts for less than 1% of production output.

Reduced filter media costs: Thanks to the filtration system’s segmented high-pressure backwashing, filter elements are effectively cleaned and can be reused multiple times. By using only high-quality woven wire mesh filters with clearly defined classifications, the Bart Filter Group ensures high purity of the polymer melt and enables repeated reuse.

High Efficiency – Cost-Effective: The compact design and carefully engineered insulation significantly reduce energy consumption. Low maintenance requirements, minimized material loss, and low filter screen costs substantially reduce operating expenses.

Typical Applications

· Heat-sensitive materials (e.g., PVC)

· End products that must not be exposed to pressure fluctuations, as this could damage them

· In-line recycling

Email: sale@meltpump.com

WhatsApp: +86 158 3833 1071