Dual Piston Screen Changer for LDPE Recycling Machine

• Type: Pipe Extruder
• Plastic Processed: PE
• Product Type: Granulating Extruder
• Model NO.: GM-DP-R series
• Feeding Mode: One Feed
• Screw: Twin-Screw
• Engagement System: Full Intermeshing
• Screw Channel Structure: Deep Screw
• Exhaust: Exhaust
• Automation: Automatic
• Computerized: Computerized
• Attribute: Auxiliary Part of Plastic Extruder
• Installation Position: Screw End and Extrusion Die
• Function: Polymer Melt Filter
• Main Material: High Quality of Alloy Steel
• Drive Mode: Hydraulically
• Heating Mode: Electric Heating Tube and Sheet
• Automatic or Not: Semi-Automatic
• Application Fields: Pipe/Cast Film/Sheet/Granules and So on
• Suitable Materials: PP/PE/PS/EPE/EPS/XPS and So on
• Size: Be Matched with Extruders
• Transport Package: Seaworthy Packaging
• Specification: SGS, CE
• Trademark: Gmach
• Origin: Zhengzhou
• HS Code: 8421299090
• Production Capacity: 200 Sets/Year

Product Description

Dual piston screen changer for LDPE recycling machine


Benefits of this M-DP-R series continuous screen changer for plastic extruder
Increased production
Reduced downtime & scrap
Leak-free operation
Increased filtration area
Reduced inlet pressures
Accurate, repeatable screen changes
Reduced maintenance

Technical data
1)The main body of the screen changer
Raw material: Alloy steel(38CrMoAlA)
Surface treatment: Nitriding treatment
Depth of Nitrated Layer: 0.40-0.70mm
Nitrided hardness: 950-1050Hv
Fragility of nitration: Less than grade 1

Flow channel treatment: Chrome plated
Depth of chromium-plating: 0.05-0.1mm
Hardness of surface after chromium-plating: HV950HV

2)Drive system: Hydraulic unit:

3)Control system
Electrical controlling system: Warnning device, pressure and temperature transducer, are included, and this part is optional for customers.




Working principle of this GM-DP-R series continuous screen changer

As the polymer melt enters the main body ofthe screen changer, the melt stream is divided equally and flows into the two channels, go through the two breaker plates, and the impurities are intercepted by the screen mesh, and when screen changing is required, one of the pistons with blocked screen pack is pushed out by hydraulic unit, and the other is still on the working position, we replace the fresh screen and then the piston with new screen is pushed into the working position, at this time, the air bleeding system also begin to work. The other piston screen change is the same with above. This type of continuous screen changer maintains a continuous melt flow.



Benifits of this GM-DP-R series Extrusion screen pack changers continuous screen changer
1, Eliminates line shutdown thus increasing production
2, Leakage-free process
3, Two breaker plates design increases filtration area compared to single breaker plate design
4, Reduced downtime & scrap
5, Reduced inlet pressure at extrusion die
6, Reduced temperature variations in the melt ·
7, Equiped with gas venting system
8, Customized design

The structure and parameter data of GM-DP-R series Extrusion screen pack changers continuous screen changer
1)The main body of the screen changer
Raw material: Alloy steel(38CrMoAlA)
Surface treatment: Nitriding treatment
Depth of Nitrated Layer: 0.40-0.70mm
Nitrided hardness: 950-1050Hv
Fragility of nitration: Less than grade 1
Flow channel treatment: Chrome plated
Depth of chromium-plating: 0.05-0.1mm
Hardness of surface after chromium-plating: HV950HV
2)Drive system: Hydraulic unit:
Hydraulic unit
3)Control system
Electrical controlling system: Warnning device, pressure and temperature transducer, are included, and this part is optional by customers



Applications

1. Non-woven.
2. Granulation.
3. Pipe.
4. Plate.
5. Sheet.
6. Cast film.
Non-woven fabrics extrusion machine
Plastic granulator
PP/PE/PPR pipe extrusion line
PP/PE plate extruder
Sheet extruder
PET monofilament extrusion machine
PET strap extrusion machine





Quality inspection
We take only first-class steel and check every production procedure to ensure every dimension is produced precisely. A final complete inspection will be executed before delivery. We guarrantee that every set of scren changer from our factory is the best quality.
Packaging
Seaworthy packaging



Commissioning
We provide the operation manual for customers to gudie to install the screen changer, and at the requirement of user, salers should send technician to install and commissioning the die at site of Buyers, expenses of the trip should be borne by Buyers.

After-sales service
12 months with proper operation by user, all the spare parts shall be replaced free of charge under guarantee period, fee for transportation and packing will be borne by users.

Type	ScreenD&A		Overall  & dimension     (mm)				Heating   power (KW))	Output (kg/h)
	Dia (mm)	Filtration area (cm² )	L	W	H	L1
G M -DP-R-80	60	28x2	180	170	280	700	2.4/3.2	30-180
G M -DP-R-100	80	50x2	220	200	320	810	3.5/4.7	80-280
GM -DP-R-120	100	78x2	250	220	360	970	5.0/7.2	220-480
G M -DP-R-155	130	113x2	320	270	450	1100	8.2/11.1	300-700
G M -DP-R-170	145	165x2	370	310	480	1320	9.4/12.7	400-1100
G M -DP-R-195	165	214x2	400	380	550	1470	10.2/13.8	650-1500
G M -DP-R-220	180	254x2	440	410	590	1620	13/17.5	800-1800
Remark: The output rates depend on the individual  extrusion  process parameters.