Introduction :

Rajhans Screens Changers are enable to easy and quick servicing of screw used on extrusion lines. They facilitate quick changing of screen with a shortest disruption to the melt flow and thereby offer as substantial saving in energy and production down time

Construction :

Rajhans Screen Changer consists of a main body and plunger made from EN - 41 B material with Nitriding operation and Nickel plating respectively. The plunger leads as per the axis of extruder inside the main body with Micron clearance as per the sizes of Screen Changer. The movement is done by means of Handle - Screw assembly manually. The cycle time is for changing the screen will be only 2 to 3 Minutes

Application and use :

It is absolutely necessary to filter plastic material by way of Screen Changer.

  • The impurities will prevent the damage, the die & barrel and increase the life.
  • The final product will be consistently good
  • Filter mesh can be changed without stopping the extruder line.
  • Without stopping the production of the line i.e. Increase the production.
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    Advantages :

    Therefore the advantages of using the Screen Changer are.

    • Total elimination of idle times (Due to a non stop work of the line)
    • Maximum use of the plants (Filter and head are always clear.)
    • Less labour required (due to line's stops/restarting head and temperature adjustment)
    • Elimination of material's scraps (due to a non stop work of the line)
    • Extremely high economical advantage due to the quick payment of the investment - therefore we can say the Rajhans Screen Changers are self - paying.

    Mode Of Operation :

    First, fit both adaptors i.e. die side and Barrel side with Screen Changers respectively. Mount the Screen Changer with necessary lifting arrangement in the place of extruder between barrel and die. Then put heaters in the main body and writing to be connected with heaters. Then keep the plunger according to the barrel output hole. The breaker plate with required mesh to be fitted with plunger. Thus, it should be ready for further operations.

    Pre - Caution During Operation :

    The Screen pack to be change with melting condition of material only.

  • Heater to be lock with given Grub - Screw.
  • Do not use extra leaverage as handle assembly for plunger movement.
  • Do not use any metallic sharpner for cleaning the plunger as well as breaker plate assembly.
  • For lifting eye bolt are provided
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    Specification Chart
    Sr. No. Model. Maximum out put Kg/hrs. Heater cartridge & Round Clamp type. Qty & Watts.
    1. RJ 30 40 2-300 L C-D 75,120 & 240
    2. RJ 40 50 2-350 L C-D 85,110, 120,& 240
    3. RJ 50 60 25 X 85 4. Nos. 500
    4. RJ 65 82 30 X 110 4. Nos. 750
    5. RJ 75 100 30 X 110 4. Nos. 750
    6. RJ 90 126 30 X 120 4. Nos. 1000
    7. RJ 120 160-170 30 X 130 4. Nos. 1200
    Accessories, (Extra).

    Special adaptor for die and barrel and connection as per your specifications.

  • Hydraulic/Pneumatic actuation if required.
  • Hand trolleys for mounting the Screen Changers.
  • Spare Screen packs and heaters.
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