New hydraulic backflush screen changer

The new hydraulic backflush screen changer is a widely used device in fields such as plastic extrusion, rubber processing, and ceramic manufacturing. Its design and functionality are aimed at improving production efficiency and product quality. Below is a detailed introduction to the new hydraulic backflush screen changer:

I. Working Principle

The working principle of the new backflush hydraulic extrusion screen changer is relatively simple yet highly efficient. As the plastic melt flows through the body of the screen changer, impurities are filtered out by a metal screen. As impurities gradually accumulate on the screen, the melt pressure rises accordingly. When the melt pressure in front of the screen reaches a set value, the backflush plunger is pushed down by the hydraulic cylinder, causing a small portion of the melt to flow backwards. This backward flow process carries away the impurities accumulated on the screen. After the backward flow time reaches a preset duration, the backflush plunger begins to move up under the action of the hydraulic cylinder, causing another small portion of the melt to flow backwards, further cleaning the impurities on the screen. After completing this series of actions, the backflush plunger returns to its original position, thus completing a process of automatic screen cleaning.

II. Main Characteristics

High Degree of Automation: The new hydraulic backflush screen changer adopts automatic control methods, enabling rapid and accurate screen changing and screen cleaning operations, significantly reducing manual intervention and operation time.

High Production Efficiency: Due to the automation of screen changing and screen cleaning processes, and the recyclability of the screen, the interval between screen changes is greatly extended, enabling long-term continuous production and improving production efficiency.

Easy Operation: The structure and operation of the screen changer are relatively simple, making it easy to maintain and reduce usage costs.

Wide Range of Applications: The new hydraulic backflush screen changer is suitable for various types of plastic extruders, rubber extrusion lines, and ceramic extrusion lines, meeting the requirements of different production processes.

III. Application Fields

Plastic Extrusion: In the plastic extrusion process, the new hydraulic backflush screen changer for extruder can filter out impurities in the plastic melt, ensuring the quality and purity of plastic products. For example, in the granulation process of common plastics such as polyethylene (PE), polypropylene (PP), and polyvinyl chloride (PVC), the screen changer can effectively filter out impurities and unplasticized particles in the raw materials, improving the purity and quality of plastic granules.

Rubber Processing: In rubber extrusion lines, the new hydraulic backflush screen changer also plays an important role in filtering out impurities in the rubber melt, ensuring the quality and consistency of rubber products.

Ceramic Manufacturing: In ceramic extrusion lines, the screen changer can filter out impurities in ceramic raw materials, ensuring the purity and quality of ceramic products.

When using the new hydraulic backflush screen changer, ensure the cleanliness and lubrication of the screen changer body and hydraulic system to prevent equipment failures caused by impurities or friction. Regularly inspect and replace the screen to ensure its filtering effect and production efficiency. When replacing the screen or performing other maintenance operations, strictly follow the operating guidelines to avoid damaging the equipment or affecting production efficiency. In summary, the new hydraulic backflush screen changer, with its high efficiency, automation, ease of operation, and wide range of applications, has been widely used in fields such as plastic extrusion, rubber processing, and ceramic manufacturing. Through reasonable use and maintenance, production efficiency and product quality can be further improved.

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