The PP modified granulation screen changer plays a crucial role in the plastics processing industry, especially in scenarios requiring high continuity and high-quality production. Below is a detailed introduction to the PP modified granulation screen changer:
I. Functions and Applications
The PP modified granulation screen changer is primarily used for filtering polymer plastic melts such as PP (polypropylene), ensuring continuity and stability in the production process. It is particularly suitable for production requirements with high continuity, such as modified granulation, piping, sheet materials, chemical fibers, and cast films, where the material flow should not be interrupted during screen changes.
II. Working Principle
The PP modified granulation screen changer typically adopts a dual-column, dual-station design, where two screens operate simultaneously. When a screen change is needed, the hydraulic station initiates the screen-changing action, allowing one screen to continue working while the other is replaced. This design ensures uninterrupted material flow, minimal material pressure fluctuations, minimal impact on production, and excellent continuity.
III. Structural Characteristics
Dual Flow Channels and Dual Stations: Two screens operate simultaneously, improving production efficiency.
Alternating Screen Replacement: Ensures continuity and stability in the production process.
Rigid Seal Structure: Safe and reliable, with no leakage issues.
Progressive Material Introduction and Ventilation Structure: Minimal pressure fluctuations during screen changes, ensuring continuous and stable product production.
Optimized Flow Channel Design: No dead corners or stagnant flow, facilitating material cleaning.
IV. Technical Parameters
Operating Temperature: Generally not exceeding 350°C.
Working Pressure: Generally not exceeding 50 MPa.
Pressure Difference: Usually not exceeding 20 MPa.
Applicable Melt Viscosity: A wide range, typically between 100 and 30,000 Pa·s.
Heating Method: Can be electrically heated or heated by a heat medium.
V. Configuration Plan
The configuration plan for the PP modified granulation screen changer typically includes standard configurations such as the screen changer body, accumulator hydraulic pump station, and heating device. Additionally, custom configurations can be provided based on specific customer needs, such as adding an electrical control cabinet and automatic control system.
In summary, the PP modified granulation screen changer is one of the important equipment in the plastics processing industry. Its stability and reliability have a significant impact on production efficiency and product quality. Therefore, factors such as its structural characteristics, technical parameters, and configuration plan should be fully considered when selecting and using it.
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