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Zhengzhou Great Machinery Co., Ltd.

Under Water Pelletizing Machine, Pelletizing Line, Plastic Granulator manufacturer / supplier in China, offering Backflush Plastic Filter-Plastic Extrusion Back Flush Screen Changer, Plastic Extruder Used Double Piston Continuous Screen Changer, Dual Rods Continuous Extrusion Screen Changer for Plastic Extrusion Machinery and so on.

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Supplier Homepage Product Gmach polymer melt filtration system Automatic self-cleaning backflush screen changer Backflush Plastic Filter-Plastic Extrusion Back Flush Screen Changer

Backflush Plastic Filter-Plastic Extrusion Back Flush Screen Changer

FOB Price: US $5,000-20,000 / Set
Min. Order: 1 Set
Min. Order FOB Price
1 Set US $5,000-20,000/ Set
Get Latest Price
Production Capacity: 200 Sets/Year
Transport Package: Sea Worthy Packaging
Payment Terms: L/C, T/T, D/P, Western Union
Basic Info
  • Model NO.: GM-DP-BF series
  • Function: Pelletizing Line/Granules Making Machine
  • Trademark: Gmach
  • Origin: Zhengzhou
  • Belong to: Auxiliary Part of The Whole Extrusion Line
  • Application: TPU ,PA,POM,PMMA Reaction Extrusion
  • Specification: CE, SGS
Product Description

Backflush plastic filter-plastic extrusion back flush screen changer


In order to considerably increase the lifetime of the filter media GMACH offers automatic backflush screen changers.
 
Working principle (backflush process)of this  double piston backflush screen changer with 4 screen cavities fortwin screw extruder
 Automatic self cleaning backflush screen changer for PET recycling granule extruding machine



These systems work as follows: When a pre-defined pollution degree is reached, the backflushing automatically starts.
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.

With the-channel screen changers additional slide valves are used at the backflush channels. There is no interference of the process during backflushing.
 
Features included
1,Continuously working melt filter
2,Four working stations 
3,venting groove can discharge the gas mixed in the raw material 
4, no interference during the process of backflushing
5,the screen cleaning reached 85%
6, long life span of the filtration screen pack/mesh , it owning to up to 100 times backflushing at most.
screen change proces
The screen changer and gas venting process of this kind of   Automatic backflush screen changer with four working positions for plastic extrusion machine
The following process is based on standing face to the screen changer and extruder
one rod is pushed out on the left side of the housing of the screen changer by hydraulically
the blocked filter screen pack is removed and replaced by a fresh one
the rod is pushed into the housing of the screen changer
this rod is pushed out on the rignht side of the housing of the screen changer by hydraulically.
the other one blocked filter screen pack on this rod is removed and replaced by a fresh one.
the other rods repeat the above steps
The gas venting systen begins to work when the rod is pushed into the housing of the screen changer, and the following picture show the process of gas venting of this type of dual rods continuous extrusion screen changer for polymer melt filtration.


Main application fields of    Automatic backflush screen changer with four working positions for plastic extrusion machine
for compounding, semi-finished production, recycling, manufacturing of fibers, polymerization, film extrusion
for fully automatic production processes
Technical data


Type


ScreenD&A
 

Over all dimension


Heating power
(KW))


Output
(kg/h)

 

Dia(mm)

Filtration area(C)

L1

L2

L3

 

 

GM-DP-BF-120

100

78x4

220

180

1160

2.4/3.2

260-760

GM-DP-BF-135

115

104x4

250

205

1280

3.5/4.7

400-1100

GM-DP-BF-155

135

143x4

270

225

1420

5.0/7.2

600-1400

GM-DP-BF-160

145

165x4

310

260

1600

8.2/11.1

800-2000

GM-DP-BF-170

150

177x4

370

310

1750

9.4/12.7

1350-3000

GM-DP-BF-195

175

240x4

380

320

1900

10.2/13.8

1600-3800

GM-DP-BF-220

200

314x4

410

350

2100

13/17.5

1800-4500

GM-DP-BF-250

230

415x4

460

405

2760

15/21.5

2000-5000

 


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