DE7631805U1 - DEVICE FOR CRUSHING TIRES - Google Patents

Description

Device for shredding pneumatic tires

The invention relates to a device for comminuting pneumatic tires with a refrigerant filled and upwardly open tub accommodated in a housing, in which the pneumatic tires by means of a arranged above the tank above the level of the refrigerant and directed towards the tank, Partially immersed in the refrigerant having support members having continuous conveyor and can then be fed to a downstream shredding device.

There are devices for crushing various objects made of rubber, Cr las, plastic or the like., which are cut together to certain sizes in a cutting device and then on the Continuous conveyor through the refrigerant - for example glycol, alcohol, glycerine, liquid air,

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liquid nitrogen or liquefied natural gas. Both the continuous conveyor as well as a belt that is parallel to this and that presses on the objects to be frozen the refrigerant on deflection rollers and lift the objects over at the end of the conveying path the refrigerant level up to a hydraulic press. In this, the brittle ones should Objects are crushed.

A continuous conveyor operating in a refrigerant is not a useful device for the freezing process; both the mechanical parts of the pulleys and the material of the conveyor itself wear out quickly, and moving parts remain in a refrigerant prone to failure.

For the processing of old tires, a device is also proposed in which the old tires - lying on a conveyor belt - drive through a spray system and in this way get to the shredding press. Now, however, the spraying of old tires with nitrogen has become a thing of the past Od. The like. Proven to be inadequate, since experience has shown that the spray mist affects the old tires as a whole does not cool down so that their comminution can be carried out without problems; it will only the Martel layer of the hoop is frozen, and the downstream press tool breaks up the old tires into larger pieces.

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A device with above the level of the refrigerant now has far better results Continuous conveyor provided with support members pointing downwards from this.

Only then was it possible to treat the pneumatic tire using the dipping process and make it so even freeze deeply. That device allowed problem-free reprocessing at low costs and low operational disruptions and also leads to a particularly favorable final granulate, which is produced in a rolling mill downstream of the tank will.

In view of these circumstances, the inventor has set himself the goal of creating a device of the initially to create mentioned type with increased efficiency, with which the costs are further reduced can be; The constant renewal of the refrigerant bath is a major cost factor represent.

To solve this problem, the idea that the tub is at least one strand from the continuous conveyor leads to it interspersed and sur trough open chamber or the like - in the conveying direction - to be connected upstream and this on their end remote from the tub through lock organs, if necessary through a lock chamber to close. A tunnel-like chamber is intended to be used find the length of which corresponds approximately to the length of the tub.

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Thanks to these provisions, the rising nitrogen is trapped in the housing of the device and used at the same time to pre-cool the old or pneumatic tires. This leads to a significant Increase in the efficiency of the entire device.

According to a further feature of the invention, the lock chamber mentioned or one of the tunnel-like ones So-called magazine chamber upstream of the chamber is at least partially penetrated by the continuous conveyor. This should - according to a further feature of the invention - over one in the lock or the Magazine chamber interchangeably provided holding device for the pneumatic tires run. this makes possible it is to pre-sort the pneumatic tires to be processed in, for example, insertable magazine boxes and to continuously exchange full magazine boxes for empty ones.

It is within the scope of the invention that the tub is arranged lower than the bottom of the tunnel-like Chamber and that at least the lower run of the continuous conveyor above the tub by pulleys staggered downwards. This measure reduces the construction and operating costs of the System, as only the cross-sectional widths that are absolutely necessary can be used.

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Further advantages, features and details of the invention emerge from the following Description of preferred exemplary embodiments and based on the drawing; this shows ins

Fig. 1: the schematic longitudinal section through part of a device with a continuous conveyor;

Fig. 2: its partially broken side elevation;

Fig. 3: the entire device in a reduced longitudinal section with an opposite 1, 2 modified guidance of the continuous conveyor;

In a - according to FIG. 2 resting on wheels 1 - cuboid housing G is a tub 2 with liquid Nitrogen 3 housed, above this tub 2 of length i there is a roller 4 running endless hoisting rope or a chain 5 on which - towards each other at intervals t-harnesses 6 hanging.

In the rigid harness 6 of the lower strand 5 of the conveyor rope or chain 5 are used pneumatic tires D, which migrate in the conveying direction χ through the nitrogen bath 3; the lead time depends on the respective wall thickness of the pneumatic tire D and experience has shown that it can be dimensioned briefly being.

At the discharge 7 of the tub 2, a gripping arm 8 controlled by light barriers (not shown) takes the from the nitrogen bath 3 in the frozen The state of the approved pneumatic tires D from the

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Schirren 6 and Jthftr. gives it to a rolling mill 9 '^;'· /, - i

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- · ■■■. ■; ·: Bends show pyramid-like, offset from one another Teeth 30, the arrangement of which entails an imposition of steel inserts in the pneumatic tires D stops during the ZerklelηerungsVorgangs. The rigid inelastic pneumatic tires D are cut into pieces S - by choosing the nip - controllable value broken; these J pieces S fall through a sieve 91 into a trap box 92

The relieved upper run 5 of the continuous conveyor 5 is driven by a drive roller 4 over the housing roof 94 or below this (FIG. 3) back to the loading opening 95 brought, which is covered with lock flaps 96.

Fig. 2 shows two parallel tubs 2 in which pneumatic tires D, D of different diameters and different widths - at the same time - can be processed.

According to FIG. 3, the tub 2 is preceded by a tunnel 70, the length f of which corresponds approximately to the tub length i; In this tunnel 70, the pneumatic tires D are pre-cooled by nitrogen rising from the tub 2. The lower run 5 of the continuous conveyor 5 is _{offset in steps above the trough 2 by pulleys 4 U} to the level of the refrigerant 3 so that the pneumatic tires D hanging on the harness 6 can immerse themselves in the refrigerant 3 without any problems.

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There is a magazine tunnel in front of the cooling tunnel, 70 71 with inserted tire magazine 73; the latter holds z. B. aehn pneumatic tires D, according to their Removal a new - in the meantime stocked - tire magazine 73 can be introduced.

The magazine tunnel 71 locks lock flaps 96 on both sides. With 74 one is the magazine tunnel 71 optionally denotes upstream lock chamber through which control persons or the like. into the device without loss of refrigerant can kick.

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Claims (5)

»O •« nt PATENTANWALT DIPL, * ING, nlEBSCH '' <"D * - 77 SINQEN1 clan A, Zi · L * 1-11 sheet -A 1 CLAIMS 1. Device for crushing pneumatic tires with a refrigerant-filled one as well upwardly open tub accommodated in a housing, in which the pneumatic tires by means of one arranged above the pan above the level of the refrigerant and Having support members directed towards the trough, some of which can be immersed in the refrigerant Continuous conveyor submersible and then a downstream shredding device can be supplied, characterized, that the tub (2) one of the continuous conveyor (5) penetrated at least one strand and Chamber (70) or the like, which is open towards the tub, is connected upstream in the conveying direction (x) and at its end remote from the tub through lock members (96), possibly a lock chamber (74) is closed. 2. Device according to claim 1, characterized by a tunnel-like chamber (70), the length (f) of which corresponds approximately to the length (i) of the tub (2). -A 2- 7631805 02/17/77 L-111 ~ A 2 ~ 3. Apparatus according to claim 1 or 2, characterized in that the lock chamber (74) or a so-called magazine chamber (71) upstream of the tunnel-like chamber (70), at least partially from the Continuous conveyor (5) is penetrated. 4. Apparatus according to claim 3, characterized in that that the lock chamber < jt (Jh) or the magazine chamber (71) one has exchangeable holding device (73) for pneumatic tires (D) and above this the continuous conveyor (5) runs. 5. Device according to one of claims 1 to 4, characterized in that the trough (2) is lower than the bottom of the tunnel-like chamber (70) and to- <at least the lower run (5) of the continuous conveyor (5) above the trough through pulleys (4) st)
staggered. swivel castors (4) step downwards 7631805 02/17/77