JP2024059233A - Water-containing fiber material concentrator - Google Patents

Abstract

[Problem] To provide a concentrator for water-containing fibrous raw materials that can make the concentration level uniform to a certain degree so that not only the final deinking process but also useful industrial materials can be produced while taking advantage of the advantages of a simple configuration. [Solution] In the water-containing fibrous raw material concentrator 1, the cylindrical drum 4 can be easily attached and detached from the closing section 8, and the mesh size of the wire mesh of the cylindrical drum 4 can be adjusted. The rotation speed of the processing section 15 can be adjusted by using the deceleration function of the gear motor, and the inclination angle of the upward gradient can be adjusted by changing the air volume of the air spring 26. The preceding water-containing fibrous raw material climbs the upward gradient on the inner peripheral surface of the cylindrical drum 4 as if being pushed out by the succeeding water-containing fibrous raw material. Since the rotating drum 4 is rotating, the fibers that are further entangled receive a force in the twisting direction, and while the water is drained from the mesh of the wire mesh 6, the fibers become entangled like a squeezed towel, are further dehydrated, and grow into a rod-shaped mass. The degree of concentration can be easily adjusted while observing with the naked eye. [Selected Figure] Figure 1

Description

The present invention relates to a concentrator for water-containing fiber-based raw materials that can homogenize the degree of concentration to a certain degree.

The concentrating washer of Patent Document 1 has a punched metal lining that forms the peripheral surface of a cylindrical drum supported rotatably about a horizontal axis, one axial end of the cylindrical drum is open and the other end is closed, and vanes are provided on the inner surface of the closed end. This concentrating washer also has a washing water supply function, and the washed stock is washed by colliding with the vanes and exposing it to the washing water, and the dirty water is discharged through the wire mesh to concentrate it.
By using this concentrating washer on paper stock that has been deinked in the process of recycling various types of waste paper, such as printing paper, it is possible to further increase the degree of deinking, up to nearly 100%.

Japanese Patent No. 2701140

Recently, there has been a movement to use various fibers, such as those from bagasse, kenaf, and sorghum, as industrial materials. To use them as industrial materials, it is first necessary to concentrate the defibrated, hydrated fibers. Since various processes, including dilution, are then carried out according to the intended use, it is convenient to be able to concentrate the fibers at a relatively uniform concentration.
However, in the concentrating washer of Patent Document 1, a partition plate is provided to block the washed stock, and the efficiency of drainage is improved until the blocked washed stock accumulates and overcomes the partition plate. Since the washed stock is transported intermittently, there is a risk of variation in concentration even though the stock is concentrated by dewatering.

The present invention was made with a focus on the above-mentioned conventional problems, and aims to provide a concentrator for water-containing fibrous raw materials that takes advantage of the simple configuration of the concentrator and cleaner of Patent Document 1, while being able to homogenize the degree of concentration to a certain extent so that useful industrial materials can be produced, in addition to the final deinking process.

After much trial and error, the inventor discovered that by eliminating the partition plate, adjusting the rotation speed and tilt angle of the cylindrical drum and the mesh size of the wire mesh as adjustment parameters, and configuring the system so that the moist fibrous raw material is continuously supplied and processed, the processing of the moist fibrous raw material can be balanced and the raw material forms a series of rods like wrung-out towels, climbing up the wire mesh inside the cylindrical drum against the inclination gradient and finally being discharged, and that by discharging the raw material in this rod-like form, the degree of concentration in each part can be made uniform to a certain extent, which led to the completion of the present invention.

The present invention is a water-containing fiber raw material concentrator that is characterized by comprising: an exchangeable cylindrical drum that is supported rotatably around a horizontal axis and has a peripheral surface formed by lining a wire mesh on a punched metal; a blocking section that is detachably attached to one axial end face of the cylindrical drum and blocks the one end face to form a processing section; a blade plate that protrudes from the inner surface of the blocking side of the blocking section; a rotating means that is attached to the blocking section and rotates the processing section at an adjustable speed; a raw material input pipe that extends inward from the other axial end side of the cylindrical drum and has a discharge port located close to the blade plate; and a tilting means that tilts the processing section from the closed axial end face of the cylindrical drum to the open other end face at an upward or downward gradient.

Preferably, the processing section is housed in a case, one end of the case is supported rotatably along the axial direction of the cylindrical drum, and a vertical movement means is attached to the other end, these forming a tilting means.
More preferably, the up-down movement means is composed of an air spring that urges the drum in an upward lifting direction, and when the air spring is in a standby position, the cylindrical drum slopes downward from the closed axial end face to the open other end face.

Preferably, a cleaning water supply pipe having ejection holes formed on its peripheral surface extends from the other axial end side of the cylindrical drum into the inside, and its tip is supported so as to be slidable relatively to the inner surface of the rotating closing portion.
More preferably, a member of the rotating means protrudes as a protrusion from the centre of the inner surface on the closing side of the closing portion, and the tip of the cleaning water supply pipe is slidably fitted onto this protrusion.

The water-containing fibrous raw material concentrator of the present invention has the advantage of being simple in structure, and can uniformize the concentration level to a certain extent so as to produce useful industrial materials as well as the final deinking treatment.
In addition, by adding a cleaning function, it can be used to further increase the degree of deinking after deinking treatment when recycling various types of waste paper such as printing paper.

1 is a perspective view of a water-containing fiber material concentrator according to an embodiment of the present invention; FIG. 2 is a front view of the water-containing fiber material concentrator of FIG. 1. FIG. 2 is a cross-sectional view of the water-containing fiber material concentrator of FIG. 1. 2 is a perspective view of a processing section of the water-containing fiber material concentrator of FIG. 1. 5 is an exploded perspective view of the cylindrical drum and the closing portion of the processing portion of FIG. 4, seen from a different direction. FIG. 6 is a front view showing a connection state between the cylindrical drum and the closing portion in FIG. 5 . This shows the state in which the case of the water-containing fiber material concentrator of FIG. 1 is in a downward slope on the discharge outlet side. This shows the state in which the case of the water-containing fiber material concentrator of FIG. 1 has an upward slope on the discharge outlet side.

A water-containing fiber material concentrator 1 according to an embodiment of the present invention will be described in detail with reference to the drawings.
The water-containing fiber raw materials include not only paper stock that has already been deinked with chemicals, but also water-containing fiber raw materials made by defibrating various fibers, such as bagasse, kenaf, and sorghum.

As shown in FIGS. 1 to 3, the water-containing fiber material concentrator 1 has a horizontally long rectangular case 3 placed on a stand 2 .
As shown in detail in Figures 4 to 6, a cylindrical drum 4 is housed inside this case 3. The axis of the cylindrical drum 4 is oriented horizontally along the horizontal direction of the case 3. The peripheral surface of this cylindrical drum 4 is formed by lining a wire mesh 6 on a perforated metal 5. If the peripheral surface were constructed only from the wire mesh 6, it would be difficult to maintain the strength of the cylindrical drum 4, so the above-mentioned structure is adopted.
Both axial end faces of the cylindrical drum 4 are open, and a flange 7 is attached to one end face. The flange 7 is in the form of an annular block, and has through holes 7a formed parallel to the axial direction. The through holes 7a are formed at regular intervals in the circumferential direction.

One end face of the cylindrical drum 4 is closed by a closing portion 8. This closing portion 8 is disk-shaped, and the inner surface on the closing side is composed of an end plate 9 except for the outer periphery. Blade plates 10 are protruding from this end plate 9. The blade plates 10 extend radially outward from the center side, and a plurality of blade plates 10, 10, ... are protruding at regular intervals from each other in the circumferential direction to form a radial shape. However, the blade plates 10, 10, ... extend outward from a position slightly away from the center of the end plate 9.
The outer circumferential side of the blocking portion 8 is a connecting portion 11, in which through holes 11a are formed parallel to the axial direction. The through holes 11a are formed in a plurality of circumferential directions at the same intervals as the through holes 7a.

When the connecting portion 11 is aligned with the flange 7 and its circumferential orientation on the cylindrical drum 4 side is adjusted to connect the through holes 7a, 7a, ... to the through holes 11a, 11a, ... and the bolts 12 are inserted and tightened with nuts 13, the cylindrical drum 4 and the closing portion 8 become one unit and one end face of the cylindrical drum 4 is closed. One inner surface on the axial direction of the cylindrical drum 4 is formed by a mirror plate 9, with the vanes 10, 10, ... protruding toward the inside of the cylindrical drum 4.
It is also possible to provide a location for placing an O-ring between the flange 7 and the blocking portion 8 rather than directly joining the flange 7 and the connecting portion 11, and to achieve a liquid-tight seal via the O-ring.

The cylindrical drum 4 is supported inside the case 3 so as to be rotatable about a horizontal axis by rollers 14, 14. The cylindrical drum 4 and the closing section 8 are integrated as described above to form the processing section 15, which is rotatable about a horizontal axis.
A gear motor 16 with a reducer is mounted on the stand 2 as a rotation means on the outside of one longitudinal side of the case 3, and the drive shaft of this gear motor 16 is connected to a rotating shaft 16a via a coupling 17. The rotating shaft 16a further enters the case 3 via a bearing 18, and its tip side is connected to the closing part 8 by using a fixing member 19. Therefore, by driving the gear motor 16, the closing part 8 and the cylindrical drum 4 constituting the processing part 15 rotate integrally around the axis.

A wash water supply pipe 20 and a raw material input pipe 21 enter the inside of the case 3 from the side opposite to the side where the gear motor 16 is mounted. These pipes 20, 21 enter the inside of the cylindrical drum 4 from the open end face of the cylindrical drum 4, and extend inside the cylindrical drum 4 in parallel to the axial direction.
The cleaning water supply pipe 20 extends long in the axial direction toward the center. The fixing member 19 protrudes in the axial direction toward the center, and has a circular cross section perpendicular to the axial direction. The cleaning water supply pipe 20 is fitted onto the fixing member 19 via a resin ring that allows it to slide.

The wash water supply pipe 20 is made of a high-strength material so that it can withstand the pressure of water, and is accordingly heavy, but since its tip is raised and supported by the fixed member 19, it does not sag inside the cylindrical drum 4 and maintains a position extending laterally. Note that although the solid member 19 rotates around its axis, the wash water supply pipe 20 is slippery and is not dragged by this movement, and the fixed member 19 slides relative to the wash water supply pipe 20.
A plurality of jet holes 20a, 20a, ... are formed in a row at regular intervals on the circumferential surface of the lower side of the cleaning water supply pipe 20. Water is jetted downward from the jet holes 20a.

The raw material input pipe 21 extends at a position displaced in the circumferential direction from the cleaning water supply pipe 20, and its end opens to form a discharge port 21a.
This discharge port 21a faces the end plate 9 and is close to but does not intersect with the protruding end of the blade plate 10. As the end plate 9 rotates, the blade plates 10, 10, ... also move, and the blade plates 10, 10, ... sequentially pass near the discharge port 21a.
Between the open end face of the cylindrical drum 4 and the end face of the case 3, a discharge port 22 is provided by opening the peripheral portion of the case 3.

The entire case 3 together with the processing section 15 housed therein can be tilted using a tilting means.
This tilting means will be described with reference to the deformed image diagrams of FIG. 7 and FIG.
A fulcrum 23 is attached on the stand 2, and one longitudinal end of the case 3 is rotatably supported thereon. A receiving base 24 is fixed on the stand 2 away from the fulcrum 23. The upper surface of the receiving base 24 is an inclined upper surface 24a, which descends the further it is from the fulcrum 23. A mounting portion 25 is fixed to the case 3, and the lower surface of the mounting portion 25 is an inclined lower surface 25a that is inclined in the same direction as the inclined upper surface 24a. When the other axial end of the case 3 is raised and supported with the inclined upper surface 24a in contact with the inclined lower surface 25a, the cylindrical drum 4 housed inside the case 3 is inclined downwards with the open end side descending.

Meanwhile, an air spring 26 is also provided near the receiving stand 24. When air is pumped into this air spring 26 and it extends upward from the standby position, the other axial end of the case 3 is raised and supported by this air spring 26. In this case, the inclined upper surface 24a moves away from the inclined lower surface 25a. In this state, the cylindrical drum 4 housed inside the case 3 has an upward slope with the open end side raised.

In terms of the positional relationship with the processing section 15 housed in the case 3, the fulcrum 23 is positioned on the blocking section 8 side, and the air spring 26 is positioned on the open end face side of the cylindrical drum 4, so that the vertical positional relationship of the open end face side changes significantly.
In addition, since the connecting shaft 16a is rotatably connected to the drive shaft of the gear motor 16 via a coupling 17, the connecting shaft 16a can also rotate in response to the rotation of the case 3 described above.
During the concentration process, the gradient is set to an upward gradient, and during the cleaning process described below, the gradient is set to a downward gradient. The gradient range is assumed to be about ±5°.

Since the hydrous fibrous raw material concentrator 1 is constructed as described above and the cylindrical drum 4 can be easily attached to and detached from the blocking section 8, a plurality of wire meshes 6 with different mesh sizes can be prepared and the mesh size of the wire meshes 6 can be changed by replacing the cylindrical drum 4 constituting the processing section 15. In other words, it can be used as one of the adjustment parameters.
In addition, the rotational speed of the processing unit 15 can be adjusted by utilizing the deceleration function of the gear motor 16 and frequency adjustment by inverter drive of the gear motor, and the inclination angle of the upward gradient can be adjusted by changing the amount of air in the air spring 26, so these can also be used as adjustment parameters.

In the hydrous fiber raw material concentrator 1, hydrous fiber raw material is fed into the rotating cylindrical drum 4 through the raw material feed pipe 21, and is discharged from the discharge port 21a toward the head plate 9. When the raw material collides with the head plate 9, it is kneaded by the blades 10, dehydrated, and the fibers begin to entangle.

As the water-containing fiber material is continuously discharged, the preceding water-containing fiber material climbs the upward gradient of the inner surface of the cylindrical drum 4, as if being pushed out by the succeeding water-containing fiber material. As the rotating drum 4 rotates, the fibers that are further entangled receive a force in the twisting direction, and as the water is drained through the mesh of the wire mesh 6, the fibers entangle like a squeezed out towel and grow into rod-shaped lumps. The rod-shaped lumps that reach the open end of the cylindrical drum 4 fall and are discharged from the case 3 through the discharge port 22.

The degree of growth of the rod-like lumps, i.e., the degree of concentration progress, can be easily adjusted while observing with the naked eye by using the mesh size of the wire mesh 6, the inclination angle of the upward gradient of the cylindrical drum 4, and the rotation speed of the cylindrical drum 4 as adjustment parameters.
The larger the mesh, the better the drainage, the steeper the upward gradient, the longer it takes to ascend inside the cylindrical drum 4, and the faster the rotation speed, the easier it is to be twisted. Adjustments must be made taking these tendencies into consideration.
As a result, when the gas is discharged, the degree of concentration can be made uniform to a certain extent at each location.

This water-containing fibrous raw material concentrator 1 also has a washing function that utilizes a washing water supply pipe 20, and water is sprayed from the spray holes 20a, 20a, . . .
Since the fibers are kneaded, when the paper is passed through this water-containing fiber raw material concentrator 1 after normal deinking processing for recycling waste paper, the ink and chemicals between the fibers are kneaded and made easier to separate, and by balancing the above adjustment parameters, a deinking effect of nearly 100% can be achieved.

In this manner, the water-containing fiber material concentrator 1 has a simple structure, but can relatively easily uniformize the concentration level to a certain degree depending on the material.
In addition, by making the open end of the cylindrical drum 4 slope downward, any objects trapped inside the cylindrical drum 4 can be slid down and removed. If a washing function is provided, the impact of the washing water can tear off any objects caught on the wire mesh 6, or the pressure of the washing water can be changed in the direction of sliding, making it easier to slide down. This makes cleaning the cylindrical drum 4 easy.

Although the embodiment of the present invention has been described in detail above, the specific configuration is not limited to this embodiment, and the invention also includes design changes and the like that do not deviate from the gist of the present invention.
For example, a shower capable of moving parallel to the axial direction of the cylindrical drum 4 may be provided on the outside of the cylindrical drum 4, and high-pressure water may be sprayed while moving from the outside to peel off the fibers caught in the mesh of the wire mesh 6.

In addition, scoop plates that rise low toward the radial center may be provided at regular intervals on the inner peripheral surface of the flange 7 of the cylindrical drum 4. The portion that constitutes the peripheral surface of the flange 7 cannot be made of wire mesh, but by providing scoop plates in this way, the raw material that has fallen there can be scooped up by the rotation of the cylindrical drum 4, making it easier to bring it to the wire mesh 6 side.

DESCRIPTION OF SYMBOLS 1...Water-containing fiber-based raw material concentrator 2...Frame 3...Case 4...Cylindrical drum 5...Punched metal 6...Wire mesh 7...Flange 7a...Through hole 8...Closure 9...Head plate 10...Blade plate 11...Connecting portion 11a...Through hole 12...Bolt 13...Nut 14...Roller 15...Processing portion 16...Gear motor 16a...Rotating shaft 17...Coupling 18...Bearing 19...Fixed member 20...Cleaning water supply pipe 20a...Ejection hole 21...Raw material input pipe 21a...Discharge port 22...Discharge port 23...Support 24...Receiving base 24a...Inclined upper surface 25...Placement portion 25a...Inclined lower surface 26...Air spring

Claims (5)

A water-containing fiber raw material concentrator comprising: an exchangeable cylindrical drum supported rotatably around a horizontal axis and having a peripheral surface formed by lining a wire mesh on a punched metal; a blocking section removably attached to one axial end face of the cylindrical drum and blocking the one end face to form a processing section; a blade protruding from the inner surface of the blocking side of the blocking section; a rotating means attached to the blocking section and rotating the processing section at an adjustable speed; a raw material input pipe extending inward from the other axial end side of the cylindrical drum and having a discharge port located close to the blade; and a tilting means for tilting the processing section from the blocked axial end face of the cylindrical drum to the open other end face at an upward or downward gradient. The water-containing fiber material concentrator according to claim 1,
The processing section is housed in a case, one end of the case is supported so as to be freely rotatable along the axial direction of the cylindrical drum, and a vertical movement means is attached to the other end, which together constitute a tilting means. In the water-containing fiber material concentrator according to claim 2,
A water-containing fiber raw material concentrator characterized in that the up-down movement means is composed of an air spring that urges the drum in an upward lifting direction, and when the air spring is in the standby position, the cylindrical drum is in a downward slope from one closed axial end face to the other open end face. The water-containing fiber material concentrator according to claim 1,
A water-containing fiber raw material concentrator characterized in that a cleaning water supply pipe having nozzles formed on its peripheral surface extends from the other axial end side of the cylindrical drum into the inside, and its tip is supported so as to be able to slide relatively against the inner surface of the rotating closing portion. The water-containing fiber material concentrator according to claim 4,
A water-containing fiber raw material concentrator characterized in that a member of a rotating means protrudes as a protrusion from the center of the inner surface of the closed side of the closed portion, and the tip of the cleaning water supply pipe is slidably fitted onto this protrusion.

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