JPS6221907B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention primarily relates to a fiber extraction device for crushing banana trunks into pulp.

In recent years, due to the lack of wood, banana trees have to cut down their old trunks and harvest the new growth every year, but the old trunks that have been cut off are often discarded.

However, since banana trunks are rich in fiber, they are suitable as a raw material for pulp, and since they are produced in large quantities every year, the banana trunks are mechanically processed by crushing and squeezing to separate the fibers. In particular, in the present invention, the material to be processed in the above-mentioned crushing process is transported reliably and at an appropriate constant speed, the crushing capacity is increased, and the material is collected within the processing chamber. This enables smooth continuous processing without clogging.

Next, the structure of the present invention will be explained based on the illustrated embodiment. A drum-shaped processing cylinder 3 is rotatably supported inside a processing chamber 2 provided with a hopper 1 at the upper end. Processing blades 4 are protruded from the outer periphery, and a separation net 6 is stretched over a separation chamber 5 formed inside the processing chamber 2 below the processing cylinder 3. Fixing piece 7 facing blade 4...
A gutter-shaped banana trunk piece 8 is inserted into the processing chamber 2 from the hopper 1 with a processing blade 4 rotating in the direction of the arrow A in FIG. 1 and a stationary fixed piece 7. …
...and is torn by the separation net 6, so that the stem pieces 8 are separated into fibers 9 and an intermediate layer that connects these fibers 9, and are separated from each other. A considerable portion of the moisture contained in the separation net 6 is formed so that it falls into the separation chamber 5 through the small holes in the separation net 6. In addition, this separation net 6
may be any material that does not allow fibers to pass through, but allows the intermediate layer, moisture, etc. to pass through. Therefore, perforated plates may be used instead of nets, and elongated plate-like bodies are arranged at appropriate intervals in the circumferential direction of the processing cylinder 3 with the width direction vertical, and the longitudinal direction It may also be a separation net with elongated gaps between the sides.

A feed spiral 11, that is, a transfer device parallel to the axis 10 of the processing cylinder 3 is rotatably supported, for example, diagonally above the processing cylinder 3. This feeding spiral 11 is
A downward gutter-like frame 12 is provided that is provided close to the processing blade 4 at an appropriate distance so that it does not come into contact with it when it rotates, and that extends approximately along the outer periphery of the processing blade 4, so that the material to be processed can be effectively fed by the spiral 11. That's what I do.

Further, the lower part of the processing cylinder 3 opposite to the hopper 1 is opened to serve as a discharge port 13 for the processed material, and the lower part of the discharge port 13 is partitioned from the separation chamber 5 and is provided with a throttle hopper 15 as a throttle chamber 14. At the bottom thereof, a plurality of squeezing rollers 16a, 16b... (two are shown as an example in the figure) are arranged so that their axes are approximately horizontal and are positioned vertically (including diagonally vertically) with respect to each other. The squeezing roller 1 is rotatably provided as shown in FIG.
A collection box 17 is placed below 6a and 16b.

Further, the processing cylinder 3 is rotationally driven by a winding transmission mechanism 19 driven by a prime mover 18, and is rotated by a feed spiral 11.
is the shaft 10 of the processing cylinder 3 and the shaft 2 of this feed spiral 11.
0, the squeezing rollers 16a and 16b are rotated by a winding transmission mechanism 21 that connects the
Gears 23a and 23b having the same number of teeth are fixed to a and 22b so that they rotate in opposite directions, and
One of the squeeze rollers 16a is rotationally driven by a winding transmission mechanism 24 that connects the shaft 10 of the processing cylinder 3 and the shaft 22a of one of the squeeze rollers 16a, and the squeeze rollers 16a and 16b rotate in opposite directions. It is becoming driven.

Although not shown, if the above-mentioned processing blades are attached to the processing cylinder so that the blade surface is inclined with respect to the axis of the processing cylinder and a lateral feed angle is provided, the rotational movement of these processing blades will be controlled. As a result, a lateral force is generated, so that the material to be processed can be transported toward the discharge port 13 at the same time as the processing blades perform the crushing process.

Since the fiber collecting device according to the present invention is configured as described above, the fiber collecting device according to the present invention can collect old banana trunks, for example, by several tens of cm.
For example, cut the cut trunk into lengths of 2
A gutter-shaped trunk piece 8 is obtained by interlocking it between a set of rotating endless chains.

Therefore, if these stem pieces 8... are thrown into the hopper 1 of the above-mentioned invented device, the rotating processing blade 4
The stem piece 8 is torn and separated into fibers 9 and an intermediate layer by the stationary fixed piece 7 and the separating net 6, and the fine intermediate layer and water leak through the separating net 6. This will cause the waste to accumulate in the separation chamber 5.

However, the stem piece 8 is not immediately crushed and completely separated, but becomes a solid piece that retains its original shape for a while, rotates together with the processing blade 4, and is rotated by the spiral of the feed spiral 11 provided diagonally upward. After being pushed between the flanges 11a and being slightly transferred in the direction of the discharge port 13 by the rotating feed spiral 11, the spiral flanges 11
a, rotates again together with the processing blade 4, and is crushed between the fixed pieces 7... In this way, the stem pieces 8
In other words, the material to be treated is surely slowly transferred toward the discharge port 13 while being crushed, so that the stem pieces 8 are completely separated into the fibers 9 and the intermediate layer, and only the fibers 9 reach the end of the processing cylinder 3. and squeeze hopper 1 from discharge port 13.
It falls to 5. Here, the fibers still containing water are sufficiently squeezed by squeezing rollers 16a and 16b rotating in the direction of the arrow in FIG.
It falls on 7. At this time, the water squeezed out from the fibers 9 flows along the upper surface of the lower squeezing roller 16b.
It flows into the separation chamber 5 (in this case, the lower part of the separation chamber 5 is formed in a substantially square shape when viewed from above).

As explained above, the fiber collection device of the present invention is capable of efficiently mechanically crushing relatively soft trunks such as banana trunks to collect fibers. Therefore, it has become possible to transport the processed material reliably and at a substantially constant feed rate, making it possible to prevent clogging in the processing cylinder, and to ensure that the material is sufficiently and evenly crushed. This makes it possible to almost completely separate the parts from the other parts, and allows continuous work to be carried out smoothly.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional side view showing an embodiment of the present invention, and FIG. 2 is a cutaway view of the main part in FIG. 1 in the direction of arrow B. Explanation of symbols, 1...hopper, 2...processing room, 3...
...Processing cylinder, 4...Processing blade, 5...Separation chamber, 6...
Separation net, 7...Fixed piece, 8...Stem piece, 9...Fiber, 10, 20, 22a, 22b...Shaft, 11...
...Feed spiral, 11a...Spiral collar, 12...Gutter-shaped frame, 13...Discharge port, 14...Squeezing chamber, 15...
Squeezing hopper, 16a, 16b... Squeezing roller, 1
7...Collection box, 18...Motor, 19,21,2
4... Wrap transmission mechanism, 23a, 23b... Gears.

Claims (1)

[Claims] 1 The stem pieces introduced into the processing chamber are separated into fibers, moisture, etc. using a processing blade that rotates within the processing chamber and a fixed piece provided in the processing chamber, and the above-mentioned processed material is placed in the processing chamber. A fiber collecting device equipped with a transfer device that transfers the fibers toward the discharge port.