CN203831613U

CN203831613U - Recycling device of cast film offcut

Info

Publication number: CN203831613U
Application number: CN201320872804.1U
Authority: CN
Inventors: 邵峥
Original assignee: Zhejiang Jin Rui Thin-Film Material Co Ltd
Current assignee: Zhejiang Jin Rui Thin-Film Material Co Ltd
Priority date: 2013-12-28
Filing date: 2013-12-28
Publication date: 2014-09-17
Anticipated expiration: 2023-12-28

Abstract

The utility model discloses a recycling device of cast film offcut. The recycling device comprises a box body, wherein a base is arranged below the box body; the base comprises an air permeable plate connected with the lower end of the box body and a cavity formed below the air permeable plate; the cavity is connected with a compressed air source; a refrigerating device is inserted in the cavity; an old material discharge pipeline penetrates through the cavity. According to the recycling device of the cast film offcut, the air permeable plate is used for jetting old materials to the discharge pipeline; as the old materials containing small particles are easy to float to the upper layer, the old materials entering the discharge pipeline are guaranteed to be materials containing basically uniform small particles; the uniformity of the old materials conveyed to a screw rod is guaranteed; the stability of old material extrusion is guaranteed and the danger of thermal decomposition of the materials in the screw rod is reduced.

Description

For the retracting device of casting films rim charge

Technical field

The utility model relates to casting films leftover material recycling device.

Background technology

In process of production, rim charge can be cut away after pulverizing this casting films equipment online, is transported to after extruder hopper and virgin material mix and is entered extruder again by blower fan.This hopper is double-decker, skin is virgin material, and internal layer is powder, and the powder that blower fan is carried enters internal layer hopper by cyclone separator, because powder is low weight, therefore in the middle of internal layer hopper, there is a compacting screw that powder is extruded into extruder charging aperture and virgin material mixing.As shown in Figure 1: 1 is extruder, 2 is powder compacting screw, and 3 is the powder delivering pipe after fragmentation, and 4 be cyclone separator, 5 discharge pipes that are cyclone separator, and 6 internal layers that are hopper, storage powder, 7 is hopper skin.

The defect that this device exists is in the time that rim charge width changes, the powder that is transported to hopper also can change, the bulk density that compacting screw is extruded into the powder of extruder charging aperture also can change, cause the thickness of film unstable, and in the time that powder is too much, powder also can be put up a bridge and cause blanking not smooth at extruder charging aperture.

Summary of the invention

For the deficiencies in the prior art, the utility model provides the retracting device for casting films rim charge, has realized the quantitative conveying of powder, has realized the stable of extrusion capacity.

The utility model is achieved by the following technical solution: for the retracting device of casting films rim charge, comprise the old material discharge pipe that is communicated with extruder and the virgin material discharge pipe adjacent with described old material discharge pipe, also comprise casing, be communicated with old material conveying tube road at described casing upside, described old material discharge pipe is arranged at described box house, in described old material discharge pipe, be provided with the conveying screw rod for delivery of powder, described conveying screw rod comprises the diminishing First of flight pitch connecting successively, diminishing the 3rd of second of expanding gradually of flight pitch and flight pitch, in the porch of described old material discharge pipe, gear cap is set, casing below arranges base, described base comprises the ventilative board being connected with described casing lower end and the cavity arranging below described ventilative board, described cavity is connected with a compressed gas source, in described cavity, be inserted with a refrigerating plant, described old material discharge pipe is by described inside cavity.

In technique scheme, described old material conveying tube road is connected with described casing by a cyclone separator.By described cyclone separator, the powder passing in casing is carried out to initial gross separation, to filter the larger waste material of larger particles and corner wherein, ensure old material carry waste material in funnel evenly.

The utlity model has following beneficial effect: the utility model is ejected into the old material in casing in discharge pipe by ventilative board, because short grained old material is more prone to float to upper strata, therefore the old material that has ensured to enter in discharge pipe is the old material of uniform granule substantially, ensured old material in conveying screw rod evenly, ensured to extrude the stable of old material.

Brief description of the drawings

Fig. 1 is the schematic diagram of traditional structure.

Fig. 2 is the utility model structural representation.

Fig. 3 is the structural representation of conveying screw rod.

Detailed description of the invention

Below the utility model is described in further detail, referring to Fig. 2 to Fig. 3, for the retracting device of casting films rim charge, comprise the old material discharge pipe 2 that is communicated with extruder and the virgin material discharge pipe 4 adjacent with described old material discharge pipe 2, also comprise casing 1, be communicated with old material conveying tube road 7 at described casing 1 upside, described old material discharge pipe 2 is arranged at described casing 1 inside, in described old material discharge pipe 2, be provided with the conveying screw rod 8 for delivery of powder, described conveying screw rod 8 comprises the diminishing First 80 of flight pitch connecting successively, diminishing the 3rd 82 of second 81 of expanding gradually of flight pitch and flight pitch, First screw thread charging place flight pitch maximum, old material easily enters thread groove, bearing capacity is large, old material fully enters dispersion in second 81 after mixing in diminishing thread groove again after being entered by First again, after disperseing in second 81, in the 3rd 82, again mix gradually again, entered the operation of disperseing mixing, ensured that old material can fully mix.Preferably, the hand of spiral in the hand of spiral in the 3rd 82 and second 81 is contrary, further ensures mixed effect.

Gear cap 3 is set in the porch of described old material discharge pipe 2, gear cap 3 has the catch extending to both sides, for increasing the area colliding with old material, ensuring enough material falls in conveying screw rod, described casing 1 below arranges base 5, and described base 5 comprises the ventilative board 50 being connected with described casing lower end and the cavity 51 arranging below ventilative board 50, and described cavity 51 is connected with a compressed gas source, ventilative board 50 has the small pore passing through for compressed air, and old material cannot pass through this pore.

Described old material conveying tube road 7 is connected with described casing by a cyclone separator 70, by described cyclone separator 40, the powder passing in casing is carried out to initial gross separation, to filter the larger waste material of larger particles and corner wherein, ensure old material carry waste material in funnel evenly.

When use, by described old material conveying tube road 7, the leftover pieces (being old material) after pulverizing are conveyed into described casing 1, compressed gas source starts, compressed air is kicked up the old material in casing 1 by ventilative board, old material strikes gear and falls into after cap 3 opening of discharge pipe 2 upper ends, because tiny particle is easily kicked up, the old material granular size that therefore drops into discharge nozzle porch is substantially close, and therefore the old material in conveying screw rod 8 is more even.After mixing, the virgin material of old material after carrying by conveying screw rod 8 and in virgin material discharge pipe 4 enter extruder.

In described cavity 51, insert a refrigerating plant 6, compressed air is lowered the temperature after refrigerating plant 6, discharge by ventilative board 50, in the old material of kicking up, old material is lowered the temperature, reduce old material frictional heating in conveying screw rod 8, the danger of the thermal decomposition in course of conveying is less, and described old material discharge pipe 2 is by described cavity 51 inside, refrigerating plant 6 can be lowered the temperature to the discharge pipe 2 in cavity 2 simultaneously, more reduced the danger of old material thermal decomposition in conveying screw rod 8.

Claims

1. for the retracting device of casting films rim charge, comprise the old material discharge pipe (2) that is communicated with extruder and the virgin material discharge pipe (4) adjacent with described old material discharge pipe (2), it is characterized in that: comprise casing (1), be communicated with old material conveying tube road (7) at described casing (1) upside, described old material discharge pipe (2) is arranged at described casing (1) inside, in described old material discharge pipe (2), be provided with the conveying screw rod (8) for delivery of powder, described conveying screw rod (8) comprises the diminishing First of flight pitch (80) connecting successively, diminishing the 3rd (82) of second (81) that flight pitch expands gradually and flight pitch, gear cap (3) is set in the porch of described old material discharge pipe (2), described casing (1) below arranges base (5), described base (5) comprises the ventilative board (50) being connected with described casing lower end and the cavity (51) arranging in ventilative board (50) below, described cavity (51) is connected with a compressed gas source, in described cavity, be inserted with a refrigerating plant (6), described old material discharge pipe (2) is by described cavity (51) inside.

2. the retracting device for casting films rim charge as claimed in claim 1, is characterized in that: described old material conveying tube road (7) is connected with described casing (1) by a cyclone separator (70).