Used Screen changer for extruders

Leistritz 4/140 - Double piston screen changer for continuous operation Year: 2003 Refurbished: 2020 Capacity: 800-1000 kg/h 4 screens - two each piston. Diameter each screen - 140mm (In process are always two, total 280mm) Hydraulic-aggregate 1,5 kW Heater 16 kW

Screenchanger filter – automatic (NEW). Description BDO FT 160 screen changer basic version Output: 1000 kg / h (rigid PVC) including stainless version BDO FT 160 flange for Twin-screw extruder large cylinder due to high shear pressure (necessary for rigid-PVC) (Standard for BDO 160) BDCS 160 Horizontal assembly support trolley BDOC 2 P hydraulic station (Quick change system) MAXIMUM PRODUCTIVITY AND CUSTOMIZATION TO MEET THE MOST PARTICULAR NEEDS. The hydraulic screen changers BDO FT series are characterized by simple design, ergonomics and rationality with which they were designed. Thanks to a uniform and efficient heating system, are suitable for the processing of highly sensitive polymers. The operation in combination with a quick change hydraulic power unit allows the replacement of the filtering media while the extruder is running. Available with filtering masses from Ø 45 to Ø 160 mm. units are equipped with a cable channel in the bottom that conveys the power cables and thermocouples in a junction box located next to the hydraulic cylinder. This prevents dangerous overheating of the electrical system, ensuring maximum reliability. Suitable for the production of: • Blown or Cast films • Flat sheet • Pipes and profiles • Cable coating • Recycling • Masterbatch and compound pelletizing • Blow and injection moulding Filtering Mass 160 Flow dimensions Flow 400-1000 S/C Free Area 96 cm2 S/C Nominal Area 201 cm2 Screen Dimensions Screen [mm] 163 SCR. Housing [mm] 164 SCR. Housing DEPTH [mm] 4 Overall dimensions A mm 1165 B mm 756 C mm 1031 D mm 275 Weight kg 540 Heating Power R1 Zone Power W4800 R2 Zone Power W4600 Heating zones for Sliding plates W1500 [R3+R4] W1500 [R3+R4] Filtering Mass [mm] 160

260 x 220 mm sceening surface 57 kw Accumulation piston 9 lt storage throughput rate 1100 kg/h PLC Siemens S7 touch screen control

Material: PE,PP Flow rate: 800 kg/h Max. working pressure: 250 bar Pressure loss: 100 bar Max. operating temperature: 240 degrees Number of filters in production: 2 Filtration area per filter: 515 cm2 Diameter of the circular screen: 200x300mm Hydraulic pump type R

Double-piston backwash screen changer for continuous operation Normal operation : Two holes in the screen (100 %) in the process Backwashing : One hole in the screen (50 %) in the process Screen change : When changing the screen, one of the screen holes (50%) is removed from the process so that one screen hole (50%) remains in operation. Output of the extruder : 840-1900 kg/h Screen diameter : 200mm Screen cm2 : 2x314 K-SWE/RS is suitable for most processes and materials. It can be used in composite, film, tube, plate and pelletizing applications. It can handle processes with a high contamination ratio (recycling) and allows the process to continue without shutting down the system when changing the screen. Features. Backwash function. Flow channels optimized by rheological data. Wear-free metal sealing system: no additional sealing required Easy integration into line controls. It includes a complete protection system that offers maximum safety for operators. Advantages. Proven spare parts cost reduction thanks to the integrated self-cleaning (backwashing) process that allows the screens to be used over and over again Fully automated backwashing and ventilation procedure (by SPS) for less operator intervention Significant reduction of operational costs (screen and labour costs) through the use of up to 100 backwashes Normal operation The heated steel housing allows the use of two screen bearing pistons, which contain one screen gap per piston. The melt flow is subdivided into two flow paths and runs through each of the two screen pockets. Screen change The screen bearing piston with the replaceable filter element is removed from the housing so that the screen pack can be removed from the piston and replaced with a new filter element. When the screen is changed, the screen gap of the other piston remains in the production position, without interrupting the melt flow. Fifty percent (50%) of the filter area will still be used for filtering. The special ventilation procedure prevents air from entering the process after the screen has been changed. Backwashing If the chosen pressure differential increases due to contamination of the filter screens, the piston automatically moves to the backwash position. The subsequent process is not adversely affected. By reversing the flow within the screen changer, the contamination of the screen pack is directed out through a chute. The screen pack is fixed inside the screen retainer.