JPS5837639Y2 - Tire cord defibration equipment - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a defibrating device that separates and defibrates fiber waste to which rubber powder is attached, which is obtained by crushing old tires.

In recent years, various surveys have revealed that used automobile tires amount to about 40 million tires, or about 500,000 tons in weight, every year.

However, there is currently no effective way to use or process it, and only a portion of it is used as recycled rubber, cushioning material for tracks, etc.
Most of the rest is incinerated or landfilled.

Furthermore, even when used as recycled rubber, it is difficult to separate and remove adhered fine rubber powder from the fiber waste obtained from the tire cord other than the rubber content, no matter what industrial separation equipment is used.

For example, Japanese Patent Publication No. 4,822,839 discloses an apparatus that can obtain pulverized rubber with a low fiber content from old tires and also obtain a fiber content as a product of the crushed rubber.

In other words, this device sends old tires that have been previously shredded into pieces to a crusher, separates the discharged material from the crusher into rubber particles and fibers by sorting, and then passes the separated fibers directly into a fibrillator. It is.

However, even though relatively large rubber particles could be separated by such sorting, it was not possible to separate fine rubber particles strongly adhered to fibers.

In addition, the defibration device shown in this device puts the coarsely decomposed fiber material into a suction cylinder and makes it dense, so that at the same time, dust is removed and rubber powder is partially removed. .

However, since this suction effect acts through the densely deposited fiber layer, it also results in more rubber particles scattered and floating outside the fiber layer being taken into the interior.

In this way, the reality is that it is difficult to deal with it.
It wasn't a perfect way to use it.

Therefore, the emergence of a better rubber powder separation device has been awaited.

This idea makes use of the phenomenon in which fibers are pulled out with extremely strong force during defibration by a defibration device, and separated from the temporarily assembled fine rubber powder, allowing efficient separation of rubber powder and fibers. It provides equipment.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the defibration apparatus of the present invention will be described in detail below based on the drawings.

Fiber waste obtained from tire cord according to the known prior art is fed from a hopper 1 through a lattice 2 to a feed roll 3.

The fiber waste is defibrated by a defibrating needle attached to a defibrating cylinder 4 while being gripped by the feed roll 3 .

The defibrated fibers fall onto the lattice 5, but the fine rubber powder temporarily separated at this time falls into the defibration device interior space 6.
The particles are scattered and floated, and eventually fall onto the lattice 5 or the casing 7.

Most of this falling fine rubber powder is sucked and collected by a suction duct 8 provided above the defibration device interior space 6 at the contact portion of the defibration cylinder 4.

The collection capacity of rubber powder can be adjusted by changing the installation position, size, and suction power of this suction duct 8.

As described above, by using the defibrating apparatus of this invention, tire cord fibers with a very low rubber content can be obtained, and since the majority of these fibers are nylon, they can be used for various purposes such as noncombustible materials.

[Brief explanation of the drawing]

The drawing is a schematic diagram showing an embodiment of the defibration device of this invention. 1...Hopper, 2,5...Lattice,
3... Feed roll, 4... Defibration cylinder, 6... Space inside the defibration device, 7...
...Casing, 8...Suction duct.

Claims (1)

[Scope of utility model registration request] A defibrating device that defibrates fibers obtained from tire cords using a defibrating cylinder equipped with a defibrating needle, and drops the fibers to a rear part of the defibrating cylinder, the defibrating device located at the rear of the defibrating cylinder. A tire cord defibration device, characterized in that a suction duct is provided above the interior space to suction and remove rubber powder scattered and suspended in the interior space of the defibration device.