JPS6221908B2 - - Google Patents

Description

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

Nowadays, due to the lack of wood, banana trees have to cut down their old trunks and harvest the newly grown trunks every year, but this cut-off old trunk is actually being 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 separation treatment of the fibers, the intermediate layer that binds the fibers, moisture, etc. is carried out efficiently in a short time,
Furthermore, the present invention provides a fiber collecting machine configured to prevent clogging during separation.

Next, the structure of the present invention will be explained based on the illustrated embodiment. As shown in FIGS. The processing cylinder 2 is supported freely, and a hopper-shaped input port 5 is provided in the machine frame 4 at the upper part of the processing chamber 1 near both longitudinal ends of the processing cylinder 2, and an output port 1a is provided below the processing chamber 1. Open this outlet 1
a communicates with the outside of the machine frame 4 through an outlet passage 6 to form an outlet portion 7. As shown in Fig. 2, processing teeth 8 are arranged on the outer periphery of the processing cylinder 2 so that the tooth surfaces are inclined with respect to the axis of the processing cylinder 2. The one near the opening 5 is installed at this inclination angle, that is, the transfer angle α ₁ of the lateral feed is increased, and the one near the outlet 7 is installed at a smaller transfer angle α ₄ . As shown in the figure, the processing tooth 8 disposed between the extraction port 7 and the extraction port 7 has a transfer angle that gradually decreases as α ₂ >α ₃ . Teeth 8...
..., the transfer angle may be set to O.

On the other hand, in the lower part of the processing chamber 1, fixed teeth 9, which are long in the axial direction of the processing cylinder 2, are arranged along the arcuate surface of the processing cylinder 2, and between the fixed teeth 9, 9... A separation net 10 such as a perforated plate is stretched to form a separation chamber 11 below. When the gutter-shaped banana trunk pieces 12 are introduced into the processing chamber 1 through the input port 5, they are torn and squeezed by the rotating processing teeth 8 and fixed teeth 9. Therefore, the stem piece 12 is separated into long fibers 13 and an intermediate layer that connects these fibers 13 to each other, and the fine intermediate layer and the moisture in the stem piece 12 leak through the separation net 10 to the lower part. Although the fibers 13 flow into the separation chamber 11, they are blocked by the separation net 10 and remain within the processing chamber 1.
Due to the transfer angle of the processing teeth 8, the fibers 1 are gradually transferred toward the take-out port 7 while rotating together with the fibers 1, and in the vicinity of the input port 5, due to the large transfer angle _α1 , the fibers 1
The 3rd grade processed material is transferred relatively quickly, but since the transfer angle _α4 is small near the outlet 7, it is transferred slowly and undergoes the crushing process as described above. The ejection tooth 14 attached to the processing cylinder 2 does not have the above-mentioned transfer angle, but has a receding angle β with its tip tilted rearward in the rotational direction. The nearby fibers 13 are discharged from the outlet 1a to the outside of the outlet 7 by centrifugal force without being entangled with the nearby processing teeth 8, processing cylinder 2, etc. Then, a plurality of squeezing rollers 15a, 15b... are each supported by shafts with their axes substantially horizontal and with their squeezing surfaces facing the exit of the outlet passage 6 so that they are located vertically relative to each other. Moreover, these squeeze rollers 15a, 15b... are provided with gears 16a, 15b, respectively.
16b... and adjacent gears 16a, 16
b are engaged with each other, and the winding transmission mechanism 1 is connected by the prime mover 17.
The processing cylinder 2 and the gear 16a are rotationally driven through the
The fibers 13 discharged from the outlet passage 6 as described above are squeezed by the rotating squeezing rollers 15a, 15b, etc., and the moisture is guided to the water guide plate 20. The fibers 13 that have been squeezed and flowed into the separation chamber 11 are squeezed by the squeezing roller 1.
The guide plate 21 is configured to fall into the collection box 22 at the guide plate 21 that is in sliding contact with the container 5b. For example, a metal plate having an L-shaped cross section is used as the processing teeth 8, and the length l thereof is made considerably large so that the above-mentioned lateral movement amount becomes large and the processing capacity is also increased.

Also, instead of the above-mentioned separation net 10 and fixed teeth 9, a third
As illustrated in the figure, plate-shaped fixed teeth 23 which are long in the axial direction of the processing cylinder 2 are spaced apart from each other and the processing teeth 8
The fibers 13 may be arranged so as to approach the rotation trajectory of the fixed teeth 23, so that the fine intermediate layer and moisture leak from the fixed teeth 23, but the fibers 13 remain on the fixed teeth 23. Further, in the illustrated example, the machine frame 4 is divided into upper and lower halves, and the inner peripheral surface of the upper machine frame 4a is also provided with protruding teeth 24 extending in the axial direction of the processing cylinder 2. This greatly enhances the crushing effect of...

Next, the second invention shown in FIGS. 4 to 6 uses arc-shaped frame plates 25a, 25b along the lower part of the processing chamber 1 as shown in FIG. fixed teeth 26, 26... are fixed at intervals, and the frame plates 25a, 25b...
When installed in the lower part of the processing chamber 1 as shown in Figures to Figures 5, the longitudinal direction of the fixed teeth 26, 26 will be approximately parallel to the axis of the processing cylinder 2, and the fixed teeth 26 will be approximately vertical. Furthermore, as described above, the spacing between these fixed teeth 26, 26 is set to a coarse spacing _P1 in the processing zone R1 near the input port ₅ where the transfer speed toward the takeout port 7 is high. So that
Further, in the processing zone R ₂ near the extraction port 7 where the transfer speed is low, the arrangement interval P ₂ is set to be fine.

Since the fiber harvesting machine according to the present invention is constructed as described above, an old banana trunk is cut into lengths of, for example, several tens of centimeters, and the cut trunk is inserted into, for example, two sets of rotating endless chains. A gutter-shaped trunk piece 12 is obtained by interlacing the pieces in between. Then, when these stem pieces 12... are thrown into the above-mentioned input port 1, the stem pieces 12 are torn by the rotating processing teeth 8... and the stationary fixed teeth 9, and the fibers 1 are torn apart.
3 and an intermediate layer, and this finely divided intermediate layer and water are separated by a separation net 10 or a fixed tooth 2.
3... leaks into the separation chamber 11, and
The fibers 13 are rotated in the processing chamber 1 while passing through the outlet section 7.
It will be gradually transported to

In the vicinity of the input port 5, an extremely large amount of intermediate layer, dregs, moisture, etc. are generated from the stem pieces 12 that have just been input due to the above-mentioned crushing process. Since the transfer angle of the processing teeth 8 is large in the vicinity of This will not happen and the processing will be efficient.

In this way, a considerable amount of moisture and dregs such as the intermediate layer and the epidermis leak into the separation chamber 11, and the treated material remaining in the treatment chamber 1 gradually increases in volume in the vicinity of the extraction port 7. However, since the transfer angle of the processing teeth 8 is reduced, small slag and intermediate layers that have entered the fibers 13, which constitute the main part of the processing material, are removed from the processing cylinder at a low transfer speed. 2, the fibers 13 are separated and rotated many times.In this way, the fibers 13 are not subjected to excessive feeding force in the vicinity of the outlet 7, and are processed repeatedly. The resulting fibers 13 are of good quality, and no undue load is placed on the collecting machine.

Next, in the second invention shown in FIGS. 4 to 6, the fixed tooth 2 in the processing zone _R1 where the transfer speed is large
6 and 26 have coarse spacing _P1 , so
These intermediate layers can be smoothly and quickly removed from the separation chamber 11 without getting stuck between the fixed teeth 26, 26.
This, combined with the high transfer speed, allows the separation process to be carried out quickly. The fibers 13, which have been reduced to a small amount by separating a considerable amount of water and the intermediate layer, are transferred to the fixed tooth ₂ in the processing zone R2 where the transport speed is low.
Since the arrangement interval P ₂ of 6 and 26 is fine,
Since the fibers 13 are squeezed many times by the processing teeth 8..., the dregs and intermediate layer that have entered the fibers 13 can be quickly thrown out.
In addition, since the spacing _P2 has been made finer in accordance with the reduced amount of material to be processed, there is no need to worry about the fibers 13 leaking out, and since the transfer speed is also slow, there is no risk of the fibers 13 being packed together. , a smooth separation process is performed. Then, the fibers 1 are discharged from the outlet portion 7 to the processing chamber 1 by the discharge teeth 14.
3 sufficiently squeezes out water by squeezing rollers 15a and 15b, the water overflowing from the squeezing surface is guided by the water guide plate 20 and flows into the separation chamber 11, and the fibers 13 after the squeezing process are Collection box 22
It is something that falls to.

Therefore, if the trunk pieces 12 are successively introduced from the input port 5 at appropriate intervals, the collection box 2
In this way, the fibers 13 are continuously stored in the squeezing rollers 15a, 15b...
The fibers 13 that have passed through the fibers can be used as they are as a raw material for paper since water, intermediate layers, and outer skin have been sufficiently removed.

As described above, the fiber collecting machine of the present invention can efficiently mechanically crush relatively soft trunks such as banana trunks to collect fibers, and its structure consists of rotating processing teeth and A very simple device such as a squeezing roller is sufficient, making it possible to obtain pulp raw material at low cost.

[Brief explanation of the drawing]

1 and 4 are longitudinal sectional side views showing one embodiment of each invention, FIGS. 2 and 5 are partially cutaway front views of each of the above inventions, and FIG. 3 is the invention of FIG. 1. FIG. 6 is a side view of a main part showing another embodiment of the present invention, and FIG. 6 is a perspective view showing an example of the fixed teeth used in the invention of FIG. Description of symbols, 1...Processing chamber, 1a...Outlet, 2
...Processing cylinder, 3...Bearing, 4...Machine frame, 5
...Input port, 6...Outlet passage, 7...Outlet port, 8...Processing teeth, 9, 23, 26...Fixed teeth,
10... Separation net, 11... Separation chamber, 12... Stem piece, 13... Fiber, 14... Release tooth, 15a, 1
5b... Squeezing roller, 16a, 16b... Gear, 17... Prime mover, 18, 19... Winding transmission mechanism, 20... Water guide plate, 21... Guide plate, 22...
Collection box, 24...teeth, _α1 , _α2 ...transfer angle, β
...Sweding angle, P ₁ , P ₂ ... Arrangement interval, R ₁ , R ₂ ...
processing band.

Claims (1)

[Scope of Claims] 1. A stem piece introduced into a processing chamber is separated into fibers, moisture, etc. by processing teeth provided on a processing cylinder that rotates within the processing chamber and fixed teeth provided in the processing chamber. In addition, these processing teeth are arranged so that the transfer angle near the supply start end of the stem piece is large, so that the transfer speed toward the processing end of the processed material becomes large, A fiber collecting machine provided so that the transfer speed is reduced by forming the transfer angle to be small. 2. The stem pieces introduced into the processing chamber are separated into fibers, moisture, etc. by processing teeth provided on a processing cylinder rotating within the processing chamber and fixed teeth provided in the processing chamber, and These processing teeth are formed so that the transfer angle near the supply start end of the stem piece is large so that the transfer speed toward the processing end of the processed material is increased, and the above transfer angle is formed small near the processing end. Furthermore, the fixed teeth are plate-shaped and are arranged at the lower part of the processing chamber with a space between them, and this space is wide in the section where the transfer speed is high, and conversely, in the section where the transfer speed is low. The fiber collecting machine is installed in such a way that it becomes narrower in each case.