Name

Discontinuous Screen Changers

 The melt stream is conveyed in a channel straight through the housing and the screen cavity is located in the screen bearing piston. To replace the filter medium, the screen bearing piston is moved out of the housing hydraulically, until the screen cavity is freely accessible.

Categories include

1. Maual control screen changer

2. Single plate type double-working station screen changer

3. Single pillar single working station screen changer

4. Double plate type double-working station screen changer

Application

in processes where screen changes are rarely needed

Characters

1. a circular or elongated screen on one screen bearing piston

2.flow channels having very good flow characteristics

3. suitable for all kinds of thermoplastics and a high number of special applications

Heat Voltage

220V or on customer’s request

Heating

Electric, fluid or steam.

Name

Continuous Screen Changers

Continuous operation means that during the screen change the screen bearing piston, which remains in the housing, has enough capacity to take the complete melt flow. After the screen change, a venting takes place to avoid that entrapped air interferes the process.

There is no disruption or interference of the production during the screen change.

According to the type, continuously operating screen changers are equipped with either round or elongated screens.

Categories include

1.Double pillar double working station screen changer

2.Double pillar type four working station continual screen changer

3.Double pillar type four working station backflush continual working screen changer

4.Automatical Rotary Filtration Systems

5.Automatic control band type continual working screen changer

Application

Constant processes

Characters

1.two circular screen units arranged in parallel on a separate screen bearing piston (principle of two screen bearing pistons)

2.throughput of material, depending on the size, range from 5 to 26,000 kg/h

3. flow channels have very good flow characteristics

4. suitable for almost any kinds of thermoplastic

Heat Voltage

220V or on customer’s request

Heating

Electric, fluid or steam.

Name

Screen Changer with fully automatic backflush function (self-cleaning)

1.When a pre-defined pollution degree is reached, the backflushing automatically starts. 2.Then the contaminations from the screen pack are led out of the machine via a spillway. The contaminated backflush mass leaves the machine by means of heated backflush outlet pipes which are installed at the screen changer housing. There the small quantity may be removed or collected.
3.With the 4-channel screen changers additional slide valves are used at the backflush channels. There is no interference of the process during backflushing

Categories include

Double pillar type four working station back flush continual working screen changer

Application

Constant processes

Characters

1. The screens are used repeatedly because of the integrated self-cleaning (backflush).

2. Fully automated backflush and venting procedure reduces the operator’s intervention to a minimum.

3. Up to 100 backflushes ensure a significant reduction in operating costs.

4. Processes with a high proportion of dirt (Recycling)

5. Processes to run automatically and without system downtime.

Heat Voltage

220V or on customer’s request

Heating

Electric, fluid or steam.