DE19648551A1 - Rubber powder or rubber powder - Google Patents

Abstract

In the production of rubber powder or a rubber powder and textile mixture scrap tyres or scrap rubber from conveyer belts or similar products are fed into the processing chamber of a dismantling machine where they are cut into pieces and gripped by transporting(4/1) rolls which convey them through grinding(4/2) and breaker(5) rolls for breaking down the product surface. The resulting materials are then subjected to high pressure water jets inclined to the cutting surface and at 800-2000 bar pressure. The resulting rubber and fibre mixture is carried away in the water flow and filtered. Metal components of the products are removed from the nozzle chamber free from any other materials. The process plant includes a cutting plate or nozzle head with two or more water jets nozzles at 10-60 mm from the material to be processed. The nozzles have a diameter of 0.1-0.2 mm, are inclined at 25-45 deg to the cutting plate surface and are positioned to form cutting cones in which the water jets cross each other before striking the material, but do not meet. The angle of the jets, water pressure and distance of the nozzles from the material can be varied to suit material thickness. A claimed use for the rubber powder and textile mixture is as an oil absorber, 200 g of which will absorb 1l of waste oil, petroleum or chemicals.

Description

The invention relates to a method and device for the manufacture development of rubber powder from used tires, conveyor belts and the like base material using high pressure water jets.

Processes for the production of rubber powder are known in which the base material is milled using mechanical cutting tools becomes. These are primarily used when retreading worn tires. You get very pure rubber pulse ver. The property of lubrication or flow of the rubber during the decomposition by heating with the disadvantageous We Clogging of the cutting devices or a quick Len wear of the cutting tools leads to enormous expenditure conditions for cooling devices and excessive maintenance costs for the plants concerned.

Methods are also known which facilitate the disassembly of the Used rubber due to extreme hypothermia (icing) in combination enable with conventional cutting and / or milling methods.

A particular disadvantage here is the enormous amount of energy that which is necessary for disassembly.

Methods for cutting and cleaning work are also known fabrics using high pressure water jet. Enable these solutions So far, however, only smooth separating cuts or cleaning metal surfaces. A detachment of the rubber, the textile Be Components of steel are not with the solutions known so far possible. Thus, this is also a sensible one and of the costs Here, justifiable recycling of the old material is not possible.

The object of the invention is a method and an apparatus to develop that make it possible to scrap tires or rubber rubbers rial into its main components in one operation and thus to produce a rubber granulate, which with textile Components are interspersed or rubber granules with adhesive to win textile components. Finally, the steel be components of the starting material without adhering impurities won, with which the sensible, complete recovery of all Components of the starting material is secured. The won Rubber-textile fabric mixture is possible by means of various uses particularly environmentally friendly and then used recycled when eaten.

According to the invention the object is achieved in that the old series fen or the waste rubber material in the working room of a Zerle machine, separated by cutting, by rolling captured, held down, ground simultaneously and then transported and charged with high pressure water jets be hit. The high pressure water jets are known in Way generated by a high pressure water pump. The water jets hit by specially trained nozzle heads or Cutting plate at a certain angle steered on the Material that a cutting cone arises from the fact that the water jets emerging from the nozzles before hitting the Cross the material surface at a defined distance and angle, but they do not meet.  

This leads to

• 1. Rubber powder in crystalline form, but with adherent tex This creates fibrous structures, the fibers being cotton wool maintain shaped structures,
• 2. the proportion of air in the resulting rubber fiber mixture is higher, than that of the rubber produced in previously known processes powder,
• 3. The efficiency when using this substance as an oil binder significantly increased, but the manufacturing costs at the same time significantly lowered and
• 4. The metal parts can be removed in bare form without that it is still contaminated with adhering rubber / fiber parts are and for their part not the rubber / rubber fiber powder contaminate.

The cutting plate or nozzle head according to the invention has mind at least 2 water jets. The nozzles are at an angle of 25 to 45 Degree to the cutting plate / nozzle head surface and in one Distance from 10 mm to 60 mm to the material to be processed ordered so that the rubber parts already described dismantle cutting cone. This is the cutting cone characterized in that at least two water jets with one Pressure of 800 to 2000 bar cross but do not meet, before hitting the material surface. Seen from the side, the water jets run directly past each other. The pressure and the angle of the water jets depends on the thickness of the Material and the cutting speed. The resulting one The end product is collected in a filter container in which a Separation from water takes place. Then the end product is turned into a Transported silo system in which it is between the packaging is stored.

The steel remaining in the cutting room is in a clean form without any contamination without problems in any steel mill Scrap can be returned to the product cycle.

The combination of conventional milling processes and the invent The method according to the invention can accelerate the overall process disassembly process and used to further save energy will.

Embodiment

The tires pass via a transport means (1) for percussion or cutting tool (2) and are laterally separated by so that two halves are formed. These are detected by the trans port and adjustment device ( 3 ) and guided into a roller tunnel ( 4 ) in which transport rollers ( 4/1 ) and grinding rollers ( 4/2 ) are arranged. The transport and adjustment device ( 3 ) is equipped with sensors that measure the thickness of the material and at the same time determine the required working height of the grinding rollers ( 4/2 ) and transport rollers ( 4/1 ) and adjust them using adjusting devices. At the end of the roller tunnel ( 4 ) there are crusher rollers ( 5 ) which have fangs. As these rollers pass, the surface of the tire material, which is smooth due to the grinding, is torn open. This enables even faster disassembly and separation of steel and textile fabrics or steel and rubber.

The material processed in this way now enters the nozzle room ( 6 ). There, two water nozzle heads ( 8 ) and ( 9 ), each with two adjustable nozzles, are arranged on a rack ( 7 ) which in turn is adjustable. The water nozzle head ( 9 ) is adjustable, so that the required working width can be set. The arranged on the rack ( 7 ) water nozzle heads ( 8 ) and ( 9 ) lead by the specially trained drive to the rack ( 7 ) circular movements at a distance of 10 to 60 mm above and or below the material, while the Water jets at an angle of 25 to 45 degrees to the surface, forming the special cutting cone and striking the material surface at a pressure of 800 to 2000 bar. Distance, angle and pressure are varied depending on the thickness of the material and the cutting speed.

The rubber fiber mixture is entrained by the water jets and collected in the drip pan with filter ( 10 ), separated from the water and led out of the machine. The steel parts leave the nozzle work area ( 6 ) with the help of another Tansportein device ( 11 ).

Reference list

1

Transport device

2nd

Cutting tool

3rd

Transport and adjustment device

4th

Roll tunnel

4/1

Transport roller

4/2

Grinding roller

5

Crusher roller

6

Nozzle work area

7

Rack

8th

Fixed water nozzle head

9

Adjustable water nozzle head

10th

Collecting pan with filter

11

Transport device

Claims (3)

1. The method and apparatus for the production of rubber powder or rubber powder interspersed with textile components using high-pressure water, characterized in that used tires or rubber from conveyor belts or similarly suitable starting material are guided into the working area of a dismantling machine, separated by cutting, from Rolls recorded, held down and transported at the same time, with high-pressure water jets in a special way by means of one or more cutting cones with an angle of 25 to 45 degrees at a pressure of 800 to 2000 bar so that the rubber and later the text ilen Detach components from old tires or rubber and rubber powder with adherent textile structures is created, this powder is carried away by the water and then collected in a sieve-shaped conventional filter system and the metal components after the separation process o no adhering contaminants are led out of the working area of the cutting machine. 2. Device for the method according to claim 1 characterized net that a cutting plate or nozzle head with at least 2 Water jet nozzles at a defined distance of 10 to 60 mm Nozzles at an angle of 25 to 45 degrees with one nozzle diameter of 0.1 to 0.2 mm is arranged so that the water jets emerging from the nozzles are before hitting cross on the material, but do not meet and there by one or more cutting cones, which by their special training destroy the waste rubber. 3. Use of the method and apparatus according to claim 1 and 2 rubber powder-textile mixture produced as an oil binder medium, characterized in that per liter on sucking Used oil, petroleum or chemicals only be 200 grams of rubber powder be compelled.