HU211770B - Arrangement and apparatus for handling grinding, recycling of rubber-wastes - Google Patents

Abstract

The first phase of a treatment is carried out at ambient temp. without breaking the tyres up or remove leads. During a second phase, remaining steel contg. pts. are broken up below glass transition temp. of rubber (cryogenic process). Conversely a chemical treatment by a liq. hydrocarbon deriv. removes the necessity of having to break up steel contg. tyre remnants. - During the first stage of the four various processes specially developed crumbing units are used for breaking up at room temp. uncontaminated external rubber surfaces, leaving the rest of the tyre and the bead intact. As a result of crumbing, clean rubber particles are of 0.1-0.5mm size and amount to 20-35 % of total. Following this preliminary process, treatments are completed by chemical and cryogenic means.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circuit arrangement for machines for use in the rubber and plastics industry, and to shredding apparatus used to produce associated plastics and rubber products, particularly automotive tires of all types and sizes (preferably used tires). crushed (without pre-cutting and flanging).

Recycling waste for composite products is not a simple matter as the plastic, rubber ... etc. the product must first be "released from the amplifier insert, and as the quality of the associated systems becomes better, that is, the reinforcement becomes more adherent to the substrate, this is an increasingly difficult task. Therefore, such waste is usually incinerated or the organic synthetic polymeric materials are "thawed" from the metal insert in a high-temperature, oxygen-free environment.

Another problem with waste recovery is that the range and type of fortified products is extremely wide. so if only rubber products are considered through the strap, air springs, expansion joints ... etc. tires are included in the associated products. Of the associated products, the largest amount is generated by vehicle waste, which causes worldwide environmental problems.

Recycling of tires as waste is made difficult by the fact that they are of very different sizes, types, structures, profile heights, textile or steel reinforcements, etc. tires are on the market and there is no known recycling process (other than incineration) that would be applicable to all types of tires.

The different tire types can be grouped as follows:

- by type of tire (bicycle, motorcycle, car, truck, machine, tractor ... tire)

- by structure (diagonal, belt diagonal, radial),

- by material of the carcass (textile, steel, fiberglass, mixed),

- profile ratio,

- by means of airtightness.

Our goal was to bring the widest range of tires to a recyclable condition, without the need for bead separation and pre-cutting, at ambient temperature, using the same production line or process. Our efforts are also justified by the fact that 23 million tons of this type of waste tire is generated in Europe, which is mainly recovered by incineration, unless it can be reused otherwise, for example. retreaded.

Known tire recycling methods are quite specific and generally operate on rim separation or pre-cutting. Thus, the Condux Tire Shredding and Grading System also separates the flange with a stabbing knife and then, after coarse cutting with a slicer blade, produces a toothpick with a diameter of 510 mm, followed by sieving and fine grinding to a size of 0.5 to 1 mm.

The Allgaire-Alpin system is similar in many respects, but while it is only carcass-type, it is also suitable for use with steel wire-insulated tires, and the process processes special-purpose and steel-free rubber pieces separately. The main difference with our solution is that steel wheels are chopped down to -80 'C (cold process). The main advantage of our process is that it is possible to obtain very fine grinds at ambient temperature, thus obtaining a more economically acceptable and environmentally acceptable product of higher quality.

DE 2 512 753. The patent claims that cold tires are used to process waste tires, but the process is only applicable to webbed products.

Compared to our process, the main differences are the following: waste tires are processed at non-ambient temperatures, but with mandatory pre-cutting and bead extraction - if you want a really high quality powder with a small particle size, the cold process (-80 ° C).

U.S. Pat. No. 3,923,256. the patent operates at ambient temperature compared to the previous one, it cannot avoid pre-cutting and flanging and the circuit layout is different from our solution.

The present invention is based on the discovery that, with the coupling arrangement we have developed and the rotary mill and zigzag rotary mill shredders we have developed, there is no need for edge stripping and pre-cutting, and the production line can process both thirdly, very fine quality grits are obtained at ambient temperature with low energy consumption.

In view of the above, our solution relates to a coupling arrangement that provides a process for processing used and / or waste (scrap) plastic and rubber products, which can be used to process (primarily used) automotive tires of all types and sizes, preferably at ambient temperature. shredding and metal, textile, etc. separate the waste components from the rubber powder so that they can be separately recycled. The circuit arrangement also applies to a device for shredding polymeric products. The machine is equipped with a rotary control of 50,500 rpm and cutting inserts with water inserts and can thus be used for shredding associated plastic and rubber products. Incoming tires are first graded and grouped into different types and types. The tires are washed before use and dewatered after washing. For dewatering, the air is supplied by a compressed air tank fed with a compressor. From the dehumidifier to the shredder I goes to the tire. Shredding is performed at 50-500 rpm and 2.5-4.5 cm / min. The speed and the feedrate must be selected in such a way as to include the tire and the rubber

EN 211 770 Β depending on the quality of the reinforcement to prevent the tire from warming up. Thus, harder textile-reinforced tires are processed at higher speeds, while softer steel-reinforced tires are processed at lower speeds and feed rates. It is also possible to influence the particle size of the chips by increasing or decreasing the feed rate at a given speed in the former case by coarser, in the latter by finer chips.

The suction hood above the shredder I sucks out the flying dust through a cyclone. The chopped material is transported from the cyclone to a cord separator. From here, the cord's path through Cyclone II leads to a 9A cord collector and the shredded rubber is transported to the grading machine.

From the shredder I, the coarse chips go to the shredder II (mainly for steel and metal inserts, tires), where the steel and rubber are separated and the former is separated into the steel separator is delivered to the classifier by the pneumatic transport method mentioned above.

The essence of the rubbing machine is: 102 machine beds 102 machine beds with a feed slider 103 running at a feed speed of 2.5-4.5 cm / min and a table with vertical machine columns 104 fixed to the beam 106 by means of a link: 105 a knife holder 107 107 provided with a related knife blade 108 of a helical motor rotatable; 113 a tire rotation mechanism 114 with an adjusting control device for a desired speed;

the tires

- driven by a gear 111, rotated by a tire rotation motor 110;

- retained by tire pneumatic cylinder 112 with movable tire gripper 116;

above these, the microsized powders formed are surrounded by 115 exhaust hoods.

In another embodiment, the crushing apparatus - a zigzag rotary milling crusher - wherein machine feeder 201 is mounted on a feed-variable table 202 on which guide rollers 203, pulling rollers 204, and clamping rolls 206 of fixed zigzags 206 are mounted; 210 is movable by means of a traction motor 210 and rotatably rotatable by a main motor 209 of a zig-zag milling head 207 protected by a casing 208 from possible damage; the

The chopped material discharged through the hopper 211 and driven by the engine 214 through the engine 213

212 conveyor screws.

Our circuit layout consists of the following equipment:

Figure 1 A waste water purifier I is followed by a drain 2 connected to a compressor 4 via a compressed air tank 3; the dewatering 2 is a shredder 5

l. the shredder 5 is connected to a cyclone 6 via a shredder conveyor (e.g., pneumatic air duct) to which a particle extractor 7 and particle separator 8 are connected; and a second cyclone 9, to which the cord recorder 9A and a screener 10 are connected, to which the chopped particle containers 11, 12, 13, 14 are connected; the shredder II is connected to the classifier 10, into which the pre-shredded material from the shredder I is fed through the pneumatic conveyor; from the crusher II, the finely ground rubber grate is placed in the aforesaid classifier 10, but on the steel mill into the detached steel grate container 17. From the containers 12, 13, 14, and 17, the shredded material is transferred to the packaging 18.

Fig. 2 shows, in another arrangement, a steel separator connected to the shredder 5 via another shredder II II which is connected via a wire to the shredder I.

Fig. 3 is a rotary milling crusher with a vertical machine column 104 secured to a beam 106 and a connector; The crosspiece 105 is movably disposed on a knife holder 107 and is provided with an associated, helical motor rotating knife blade 108; A tire rotation mechanism 114 having a control device adjustable to a desired speed; the tires

- driven by a gear 111, rotated by a tire rotation motor 110;

- retained by tire pneumatic cylinder 112 with movable tire gripper 116;

above these, there are 115 suction canopies for the microparticles produced.

Figure 4 Zigzag rotary milling shredder - where

The machine frame 201 is provided with a feed-variable table 202 on which guide rollers 203, pull rollers 204, and clamping rollers 205 are mounted, with fixed zigzag cutting edges 206; 210, by means of a towing motor and gear, is movably disposed on a rotatable zigzag milling head 207, rotatable by a main engine, which is protected by the casing against possible damage; the comminuted material is discharged through hopper 211 and is conveyed by gear 212 driven by engine 214 via gear 213.

Claims (4)

1. A circuit arrangement for shredding all types of used and / or waste and / or discarded car tires preferably at ambient temperature, characterized in that a dewatering device (2) is connected after a waste-scrubber washing device (1), EN 211 770 Β to which a compressor (4) is connected via a compressed air reservoir (3); the dewatering device (2) being connected to a shredder I (5) equipped with a water-insulated cutter-cutting means, which is connected to a shredder conveyor, optionally a pneumatic conveying tube connected to a cyclone (6), partly by an aspirator (7) a cord separator (8) is connected; and a second cyclone (9) coupled to the cord separator (8), to which a screening device (11, 12, 13, 14) is connected to a screen (10), the last unit of the circuit arrangement being a packer (18). Arrangement according to Claim 1, characterized in that the shredder I (5) is provided with a second shredder II with other web-fed cutting tools. (15) is connected to which it is partially - a steel separator (16) is connected to which a container for collecting the steel chips (17) is connected. - on the other hand, the classifier (10) is engaged. 3. Equipment for crushing tires, recycling tires, characterized in that the crushing device, a rotary milling chopper, is provided in accordance with Claim 1 or Use in a coupling arrangement according to claim 2, wherein a machine bed (101) rests on a machine bed (102) on which a longitudinal slide (103) rests on which a vertical machine column (104) is fixed by a beam and a connector (106); a knife holder stand (107) movably disposed via a cross-carriage (105) equipped with a rotatable knife cutter blade (108) at the top of the associated main motor (109); a tire rotation mechanism (113) with a control device (114) adjustable to a desired speed; the tires being gripped by a tire catch disk (116), above which a suction canopy (115) of microparticles formed is extinguished. Apparatus according to claim 3, characterized in that the rubber crushing apparatus is used in a coupling arrangement according to claim 1 or 2, wherein the apparatus, wherein a zigzag rotary milling chopper, is located on a frame structure (201) on a feed variable variable asul (202). ) on which guide rollers (203), pull rollers (205), clamping rollers (206) are mounted, to which are fixed zigzag cutting edges (6); a towing motor and drive means (210) movably disposed on a rotatable zigzag milling head (207) provided with a rotary zig-zag cutter blade (208) rotatable by the main propulsion engine (209); a tire rotation mechanism (214) having a control device (213) adjustable to a desired speed.