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Screen Changer

Your Professional Screen Changer Supplier

 

Our goal is to become your true partner in the field of screen changer in China. Zhejiang Kehao Plastic Machinery Co., Ltd is one professional plastic recycing machinery manufacturer in China established in 2005. We have a skilled engineering team dedicated to refining every stage, from product development and process improvement to production oversight, ensuring every product delivered meets rigorous quality and performance standards. The price is competitive and the product is quality-assured, which is a good choice for your long-term cooperation.

 
 
Why Choose Us

Our services: In the pre-sales stage, our team of experts will recommend the most suitable products according to the needs of customers and provide detailed technical consultation. During the sales period, we ensure timely delivery and provide installation guidance. For after-sales, we provide long-term technical support, warranty services and spare parts to help customers maximize the use of products and get reliable maintenance during use.

Production market:

Our products are very popular in the market and are exported to India, Brazil, Mexico, Venezuela, Peru and other parts of the world.

Production equipment:

We have advanced production equipment, such as welding machines, CNC machine tools, polishing machines, etc.

Our team:

We have 120 professional employees, 12 R&D teams, and more than 15 after-sales teams, who can provide the most timely service.

 

Advantages of Screen Changer
 

Continuous operation:

Hydraulic screen changers can replace filtration screens without interrupting the production process, enabling continuous operation.

Precise filtration:

The hydraulic screen changer ensures that only purified material enters the production process, maintaining the quality of the final product.

Reduced waste:

By minimizing material loss during screen changes, hydraulic screen changers help lower material wastage.

Automation:

Hydraulic systems are automated, reducing the need for manual intervention and minimizing the potential for human error.

Fewer manual interventions:

With automatic screen changing, workers have less direct contact with potentially hazardous materials, improving safety.

Adaptability to various materials:

Hydraulic screen changers can process different materials like molten polymers and resins, offering flexibility for different manufacturing processes.

 

Screen Changer Specification

 

Model

KH-250

KH-300

KH-350

KH-400

Filter diameter(mm)

250mm*250mm*2

300mm300mm*2

350mm*350mm*2

400mm*400mm*2

Filter area(mm²)

125000mm²

180000mm²

245000mm²

320000mm²

Mesh sieve

#40

#60

#80

#40

#60

#80

#40

#60

#80

#40

#60

#80

Drive power(KW)

3KW

3KW

3KW

3KW

Heating power(KW)

18KW

26KW

31KW

53KW

Note: If you want other models, please contact us.

 

Features of Screen Changer

Large filter area:

Special detail design, large filter area, long mesh replacement time.

Special process, long service life:

Contact surface quenching treatment, hardness can reach 50 degrees, strong wear resistance, long service life.

Widely used:

The screen changer can be used in most plastic granulator machine.

 

Types of Screen Changer

 
 
01
 

Hydraulic screen changers:

The hydraulic screen changer is suitable for reprocess kind of extrusions like rp plants, filler and master batch plants, compounding plants etc, where highly contaminated kind of materials are processed.

 
02
 

Manual screen changers:

The manual screen changer is suitable for virtually any extrusion process that can afford a momentary shutdown to change screens and offers the most cost effective method of filtration available.

 
03
 

Continuous screen changer:

Filters can be cleaned and replaced without stopping the plant. It gives guaranteed continuity in processing and maximum utilization of the plant.

2

 

Application of Screen Changer
 

Polymer processing and plastic industry: In the plastic and polymer processing industries, extruder screen changers are widely used in the production of plastic films, sheets, pipes, tubes, and profiles. They can be inserted into the extruder to remove dust, foreign particles, and other contaminants from the material before it is extruded.

 

Food processing and pharmaceutical industries: In food processing and pharmaceutical industries, extruder screen changers can be used to filter food ingredients, pharmaceutical materials, and other products.

 

Recycling industry: In the recycling industry, extruder screen changers are used in plastic recycling facilities to filter out contaminants, such as labels and other plastic residues, from recycled materials.

 

Rubber and tire industry: In the rubber and tire industry, extruder screen changers are used in the production of rubber compounds and tire treads. They filter out impurities from the rubber material to improve the quality of rubber products and ensure the consistency of the materials used to produce tires.

 

Construction industry: In the construction industry, extruder screen changers are used to produce materials like plastic pipes, profiles, and insulation. They filter out impurities from the materials, ensuring the quality of the extruded products and their suitability for construction applications.

 

Textile and filtration industry: In the textile and filtration industries, extruder screen changers are used to produce fibers, yarns, and filter materials. They filter out impurities from the raw materials, ensuring the quality and consistency of the final products.

 

 
 
Components of Screen Changer
01.

Screen pack:

This consists of multiple screens or filter elements arranged in a stack within screen changer housing. The screens are typically made of stainless steel or other durable materials capable of withstanding high temperatures & pressures.

02.

Hydraulic piston assembly:

Hydraulic piston assembly applies pressure to push the used screens out of flow path & introduce new screens into position. It is controlled by a hydraulic system that regulates pressure & timing of screen changes.

03.

Manifold & sealing system:

The manifold directs the flow of molten plastic through screen pack, while sealing system ensures a tight seal between screens and the housing to prevent leakage & maintain pressure.

04.

Control system:

It regulates the operation of hydraulic screen changer, including timing & pressure of screen changes. It May be integrated with extrusion line's overall control system for seamless operation.

 

Packing and Shipping of Screen Changer

 

Packing

Wooden box

Shipping

Shipped by road, Sea, Rail

 

FAQ

Q: What are the types of extruder screen changers?

A: There are three main types of screen changers: manual, hydraulic, and slide plate. The manual extrusion screen changer requires manual operation to exchange the screens.

Q: What are the benefits of using an extruder screen changer?

A: The extruder screen changer has many benefits. It can filter impurities in the melt and improve the quality of the product. It can also help to stabilize the extrusion process, extend the service life of the die, and reduce the number of shutdowns for die cleaning.

Q: How to select the appropriate extruder screen changer?

A: First, determine the type of extruder the screen changer will be used on. Second, consider the maximum flow rate the extruder can handle. Third, consider the operating pressure the extruder will be under, along with the operating temperature.

Q: What is the working principle of the extruder screen changer?

A: The extruder screen changer is a device that filters impurities in the plastic melt. The working principle is to use a series of mesh screens to filter out impurities and contaminants from the molten plastic.

Q: How do hydraulic screen changers work?

A: Hydraulic screen changers use hydraulic pressure to move or change filtration screens. This process is automated, allowing the operator to replace screens without stopping the production line, ensuring uninterrupted operation.

Q: What industries use hydraulic screen changers?

A: They are widely used in industries like plastics, rubber, food processing, chemicals, and pharmaceuticals where high-quality filtration of molten materials or liquids is required.

Q: How does the hydraulic system compare to mechanical systems?

A: Hydraulic screen changers are generally more reliable and durable than mechanical systems because they have fewer moving parts, require less maintenance, and can handle higher pressures for more efficient screen changes.

Q: Can hydraulic screen changers handle different types of materials?

A: Yes, hydraulic screen changers are versatile and can handle a variety of materials, including molten polymers, resins, and other industrial fluids, making them ideal for a wide range of applications.

Q: How often do the screens need to be changed?

A: The frequency of screen changes depends on factors like the type of material being processed, the degree of contamination, and the specific production requirements. However, hydraulic screen changers help extend screen life by minimizing wear and tear.

Q: Are hydraulic screen changers energy-efficient?

A: Yes, hydraulic screen changers are energy-efficient due to their precise control, which ensures that only the necessary amount of power is used during operation, and the system reduces material waste and downtime.

Find professional screen changer manufacturers and suppliers in China here! Please feel free to buy high quality screen changer made in China here from our factory. Contact us for more details.

Double Plunger Screen Changer, screen changer, Hydraulic Screen Changer

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