JPS60231887A - Disc shaped diffuser - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is used to make pulp from sugarcane lees (bagasse), and involves separating pith by rubbing or pounding the bagasse. The present invention relates to a disc-type diviser for easy handling.

[Prior art] It is said that the quality of bagasse pulp is determined by the quality of devising.The quality of bagasse pulp can be improved by reducing the proportion of bis contained in bagasse fibers and the proportion of fibers in bis. Therefore, it is desirable to reduce the amount of screws in the fibers and reduce the amount of fibers in the screws to keep this ratio constant and achieve a constant quality.

Therefore, in recent years, when making pulp from bagasse, the use of Divisa as a devising machine has been considered in order to beat the bagasse to break up the fibers and separate and remove the screws in the fibers. It is used.

The mainstream of existing divisers is the vertical hammer mill type diviser as shown in FIG. This hammer mill type dipisa has a cylindrical screen b arranged inside a casing a, and a rotary shaft e supported by upper and lower bearings C1d is placed inside the screen b and is vertically aligned with the axis of the screen b. At the same time, on the outer periphery of the rotary shaft e, disks having hammer knives f are arranged in multiple stages, and a belt (not shown) is connected to the By transmitting rotational power, the hammer knife f is rotated horizontally together with the rotary shaft e, and by injecting hepa gas inside the screen b and rotating the hammer knife f, the rotating hammer knife f causes the fibers to become loose. The bagasse is twisted and dispersed, and the bagasse is rubbed (friction) between the hammer knife f and the screen b so that it is separated into long fibers and short fibers by the screen b.

However, in the existing hammer mill type dipizza, when the tip of the hammer knife f wears out due to continuous operation over a long period of time, the fibers are not crushed sufficiently and the fibers become long. If the fibers are not crushed well, the bis content in the fibers increases. Hammer mill type pizza is
The hammer knife f hits the bagasse while rotating horizontally,
Since it is a rubbing structure, changes in the properties of the supplied bagasse (for example, the length and width of the bagasse change between the early and late stages of sugar cane crushing operation) will increase the bis content of the accepted bagasse, causing a decline in pulp quality. There is a problem.

[Problems to be Solved by the Invention] The present invention reliably performs both beating (crushing) and rubbing the bagasse, thereby reducing the proportion of screws contained in the fibers, and reducing the proportion of screws contained in the fibers. The purpose is to reduce the proportion of 1 fiber and maintain this proportion constant, thereby making the quality of the bagasse pulp constant.

Means for Solving the Problem c] The disc-type diviser of the present invention has a fixed disc and a rotating disc facing each other in the vertical direction, and on each opposing surface of each of these discs,
A large number of protruding pyramid-shaped blades made of wear-resistant material,
In addition, a slight gap is formed between the blade of the fixed disk and the blade of the rotating disk, and the bagasse sent from the fixed disk side between the two rotating disks is beaten and rubbed by the blade by the rotation of the rotating disk,
Furthermore, the bagasse rM miscellaneous particles are dispersed by the frictional force between the bagasse and the screws can be easily separated and removed, thereby solving the above-mentioned problems.

[Example] Embodiments of the present invention will be described below with reference to the drawings.

Embodiment 1 FIGS. 2 to 4 show an embodiment of the present invention, in which a fixed disk 2 and a rotating disk 3 are arranged laterally opposite each other in a casing 1, and the rotating disk 3 is fixed to one end of a rotating shaft 4 passing through the casing 1 and connected to the other end of the rotating shaft 4, or (2) the rotating disk 3 is rotated via the rotating shaft 4 by driving a motor 5 via a belt. On the other hand, the fixed disk 2 is fixed to the rear end of the casing 1 of the screw conveyor 6 that conveys the bagasse, and the bagasse conveyed by the screw conveyor 6 passes through the opening 8 in the center of the fixed disk 2 and passes through the disk. 2. Set it to be sent between 3 and 3.

As shown in FIGS. 3 and 4, a large number of pyramid-shaped blades, that is, blades 9 with sharp tips, are formed from a wear-resistant material on opposing surfaces of the stationary disk 2 and the rotating disk 3. The blades 9 are made to protrude at a required height, and the spacing between the facing blades 9 on each disc is maintained at a predetermined value. For example, set the height of the blade 9 to about 3 to 121 cm.
The facing interval of the 11° blades 9 is approximately 5 to 50+u+.

The casing 7 of the screw conveyor 6 integrated with the fixed disk 2 has a duct having a bin feeder 12 in the middle between it and the lower surface of the distribution conveyor casing 11 so as to supply a certain amount of bagasse dropped from the distribution conveyor 10. 13, and the bagasse sent by the bagasse feed conveyor 14 is routed from the distribution conveyor 10 to the duct 13,
The bagasse fibers are transferred to the screw conveyor 6 via the pin feeder 12, and fed between the fixed disc 2 and the rotating disc 3 by the screw conveyor 6, whereby the bagasse fibers are separated by the relative rotation of both discs 2°3. Allow the screws to separate by being knocked or torn.

The lower end of the casing 1 is connected to an air transport pipe 16 via a rotary feeder 15, and has a fixed disk 2 and a rotating disk 3.
By transferring the material that has fallen from between the mill and tally feeder 15 to the air transport pipe 16, it is transported by compressed air from the blower 17 and blown into the fiber separation chamber 18.1. [Note 1 [The long fiber accumulating section 19, raw fiber accumulating section 20, and screw accumulating section 21 are installed in order from the front side in the sorting chamber 18], from the air transport pipe 16 to the fiber sorting chamber 1B.
The difference in specific gravity of the fibers blown into the interior is used to separate the fibers, and a devis bag gas conveyor 22 is provided below each of the long fiber accumulating section 19 and the raw fiber accumulating section 20, and below the bis accumulating section 21. A screw conveyor 23 is provided.

Since the diviser of the present invention has the above-described configuration, when bagasse with different fiber lengths and widths is fed onto the distribution conveyor 10 by the feed conveyor 14, the distribution conveyor 1
0 and falls through the duct 13, and is transferred from the pin feeder 12 to the screw conveyor 6. The bagasse that has fallen onto the screw conveyor 6 is supplied to the fixed disk 2 side inside the casing 1 by the screw conveyor 6. The bagasse sent out from the hole 8 in the axial center of the fixed disk 2 is passed between the rotary disk 3 rotated by the motor 5 and the fixed disk 2 by beating and scraping by the blades 9 of each disk 2.3. The fibers are dispersed as a result of the tearing action. At this time, since the opposing spacing of the blades 9 is set at a predetermined value between the two facing plates 2 and 3, friction between the bagasse is also effectively performed, and the screws are separated from the fibers.

The separated screws fall from the inside of the casing 1 together with the bagasse fibers, are dropped into the air transport pipe 16 by the rotary feeder 15, are fed under pressure through the air transport pipe 16 by the air discharged from the blower 11, and are separated into fibers. The air is blown into the chamber 18. At this time, due to the difference in the specific gravity of the fibers, the lighter the fibers are, the farther they are blown away, so the heavier long fibers fall to the nearest accumulation section 19, the lightest screws fall to the furthest accumulation section 21, and the above-mentioned intermediate fibers fall to the center. The long fibers and raw fibers fall into the collecting section 20 and are naturally separated, and the long fibers and raw fibers have a low bis content and do not deteriorate the quality of the bagasse pulp.

Embodiment 2 FIG. 5 shows another embodiment of the present invention, in which the screws are separated by a screen instead of the method in Embodiment 1 in which the screws are separated by pressure feeding through the air transport pipe 16 and the difference in specific gravity is used. The sieve 24 is provided with screens 25' and 26 in two stages, the openings of the upper screen 25 are larger than those of the lower screen 26, and the whole is tilted, and the rotary feeder 15 is The bagasse that has fallen through the filter is first sorted and numbered on the upper screen 25.
The fibers that have passed through the holes of the upper screen 25 are sorted by the lower screen 26, and the fibers that have passed through the holes of the lower screen 26 are separated as screws, and the fibers are separated into three. As in the case of Embodiment 1, it is carried out on conveyors 22 and 23. In the figure, the same parts as in FIG. 2 are given the same reference numerals.

In this embodiment as well, good divising can be performed as in the case of the first embodiment.

[Effects of the Invention] As described above, according to the disc-type diviser of the present invention, the blades of the rotating disc are displaced relative to the blades of the fixed disc, so that the internal action of pounding and scraping the bagasse l1ilf can be performed well. As a result, the bis in the fiber becomes easy to separate, the bis content of the fiber can be reduced, and the quality of the bagasse pulp can be maintained constant.

[Brief explanation of drawings]

Fig. 1 is a cutaway perspective view of a conventional Divisa, Fig. 2 is a schematic diagram showing an embodiment of the present invention, Fig. 3 is an enlarged view of one Ibiza of the present invention, and Fig. 4 is the ■v of Fig. 3. The arrow view and FIG. 5 are schematic diagrams showing another embodiment of the present invention. 1 is a casing, 2 is a fixed disk, 3 is a rotating disk, 5 is a motor, 6 is a screw conveyor, 15 is a rotary feeder, 18 is a fiber separation chamber, 24 is a sieve, and 25 and 26 are screens.

Claims (1)

[Claims] 1) A rotating disk rotated by a motor is opposed to a fixed disk, and a number of blades with sharp tips protrude from each opposing surface of the fixed disk and the rotating disk, and A disk-type dipisa characterized in that the distance between the fixed disk and the rotating disk is determined so as to maintain a small gap between the blade of the plate and the blade of the rotating disk.