Water-containing fiber raw material concentrator

Abstract

To provide a hydrous fibrous raw material concentrating machine capable of uniformizing the degree of concentration to some extent not only to perform a final deinking treatment but also to produce a useful industrial material while utilizing the advantage of a simple constitution.SOLUTION: In a hydrous fibrous raw material concentrating machine 1, a cylindrical drum 4 can easily be attached to and detached from a closing part 8, and the mesh size of a wire net 6 of the cylindrical drum 4 can be adjusted. The rotation speed of a processing unit 15 can be adjusted by using the deceleration function of a gear motor, and the inclination angle of a rising slope can also be adjusted by changing the air amount of an air spring 26. A preceding water-containing fibrous material climbs up a rising gradient of an inner peripheral surface of a cylindrical drum 4 so as to be pushed out by the following hydrous fibrous material. Since the cylindrical drum 4 is rotated, the entangled fibers receive a force in the twisting direction, and while water is drained from the mesh of the wire net, the fibers are entangled as if a wet towel is squeezed, and further dehydrated to grow into a rod-like mass. The degree of concentration can easily be adjusted while observing with the naked eye.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a concentrator for a water-containing fibrous raw material capable of uniformizing the degree of concentration to a certain extent.

Background Art

[0002] In the concentration washing machine of Patent Document 1, a wire mesh is lined on a punching metal constituting the peripheral surface of a cylindrical drum rotatably supported around a horizontal axis core. One end in the axial direction of the cylindrical drum is open, and the other end is closed. A blade plate is provided on the inner surface of the closed side. This concentration washing machine also has a function of supplying washing water. The washing stock is collided with the blade plate and exposed to the washing water for washing, and is concentrated by discharging the dirty water through the wire mesh. When this concentration washing machine is used for the stock that has been deinked in the process of recycling various waste papers such as printing paper, the degree of deinking can be further increased and can be raised to nearly 100%.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Recently, there has been a movement to use various fibers, such as fibers of bagasse, kenaf, sorghum, etc. as industrial materials. However, in order to use them as industrial materials, it is first necessary to concentrate the defibrated and water-containing materials. After that, various treatments including dilution are performed according to the application. Therefore, it is convenient if the concentration can be achieved at a relatively uniform concentration. However, in the concentration washing machine described in Patent Document 1, a partition plate is provided to dam up the paper pulp being washed, and the efficiency of drainage is improved as the dammed paper pulp accumulates and overflows the partition plate. Since the paper pulp is transported intermittently, although concentration can be achieved through dewatering, there is a risk that the concentration will vary.

[0005] This invention was made in view of the above-mentioned conventional problems, and aims to provide a concentrate for water-containing fiber raw materials that can uniformize the degree of concentration to a certain extent, not only for the final deinking treatment, but also to produce useful industrial materials, while taking advantage of the simple configuration of the concentrate washing machine described in Patent Document 1. [Means for solving the problem]

[0006] Through trial and error, the inventors of the present invention have found that by eliminating the partition plate and using the rotation speed and inclination angle of the cylindrical drum and the mesh size of the wire mesh as adjustment parameters, and by configuring the system to process the water-containing fiber material while continuously supplying it, the processing balance of the water-containing fiber material is achieved, and the material is discharged in a rod-like shape, similar to a wrung-out hand towel, climbing against the inclination on the wire mesh inside the cylindrical drum, and finally being discharged. They also found that by being discharged in this rod-like shape, the degree of concentration is made uniform to a certain extent at every point, thus completing the present invention.

[0007] The present invention is a water-containing fiber-based raw material concentrator characterized by comprising: a replaceable cylindrical drum that is rotatably supported around a horizontal axis and has a circumferential surface formed by lining a wire mesh with perforated metal; a closing portion that is detachably attached to one axial end face of the cylindrical drum and closes the one end face to form a processing section; a blade protruding from the inner surface of the closing side of the closing portion; a rotating means attached to the closing portion for rotating the processing section in a speed-adjustable manner; a raw material input pipe extending inward from the other axial end of the cylindrical drum and having a discharge port at a position close to the blade; and a tilting means that tilts the processing section from the closed axial end face of the cylindrical drum toward the other open end face so as to be able to change between an upward and downward slope.

[0008] Preferably, the processing unit is housed in a case, with one end of the case rotatably supported along the axial direction of the cylindrical drum, and a vertical movement mechanism attached to the other end, thereby constituting a tilting mechanism. More preferably, the vertical movement mechanism is composed of an air spring that biases the device in an upward direction, and in the standby position of the air spring, the cylindrical drum has a downward slope from one closed axial end face toward the other open end face.

[0009] Preferably, a cleaning water supply pipe having ejection holes formed on its circumferential surface extends inward from the other axial end of the cylindrical drum, and its tip is supported so as to be slidable relative to the inner surface of the rotating closure. More preferably, a rotating mechanism member protrudes from the center of the inner surface on the closed side of the closed portion, and the tip of the cleaning water supply pipe is slidably fitted onto this protrusion. [Effects of the Invention]

[0010] According to the present invention, the water-containing fiber raw material concentrator can take advantage of its simple configuration and, in addition to the final deinking process, can uniformize the degree of concentration to a certain extent, enabling the creation of useful industrial materials. Furthermore, by adding a cleaning function, it can be used to further enhance the degree of deinking after deinking treatment when reusing various types of waste paper, such as printing paper. [Brief explanation of the drawing]

[0011] [Figure 1] This is a perspective view of a water-containing fiber-based raw material concentrator according to an embodiment of the present invention. [Figure 2] Figure 1 is a front view of the water-containing fiber raw material concentrator. [Figure 3] Figure 1 is a cross-sectional view of a water-containing fiber material concentrator. [Figure 4] Figure 1 is a perspective view of the processing unit of the water-containing fiber raw material concentrator. [Figure 5] Figure 4 is an exploded perspective view of the processing unit, showing the cylindrical drum and the closing section from a different direction. [Figure 6] Figure 5 is a front view showing the connection between the cylindrical drum and the closing section. [Figure 7] Figure 1 shows the case of the water-containing fiber material concentrator with a downward slope on the discharge side. [Figure 8] Figure 1 shows the case of the water-containing fiber material concentrator with an upward slope on the discharge side. [Modes for carrying out the invention]

[0012] A water-containing fiber-based raw 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 pulp that has already been deinked with chemicals, but also water-containing fiber raw materials obtained by defibrating various fibers, such as bagasse, kenaf, and sorghum.

[0013] As shown in Figures 1 to 3, in the water-containing fiber raw material concentrator 1, a horizontally elongated rectangular case 3 is placed on a frame 2. As shown in detail in Figures 4 to 6, a cylindrical drum 4 is housed inside the case 3. The cylindrical drum 4 has its axis oriented horizontally along the horizontal direction of the case 3. The circumferential surface of the cylindrical drum 4 is formed by lining a wire mesh 6 with perforated metal 5. This configuration was chosen because it would have been difficult to maintain the strength of the cylindrical drum 4 if the circumferential surface were made solely of wire mesh 6. The cylindrical drum 4 has open ends at both axial ends, and a flange 7 is attached to one end. This flange 7 is an annular block shape, and through holes 7a are formed parallel to the axial direction. Multiple through holes 7a are formed at regular intervals in the circumferential direction.

[0014] One end face of the cylindrical drum 4 is blocked by a blocking portion 8. This blocking portion 8 is disc-shaped, and the inner surface on the blocking side is composed of a mirror plate 9 except for the outer peripheral side. A blade plate 10 is protruding from this mirror plate 9. The blade plate 10 extends from the center side toward the outer side in the radial direction, and a plurality of blade plates 10, 10,... are protruding while maintaining a certain interval in the circumferential direction with respect to each other to form a radial shape. However, the blade plates 10, 10,... extend outward from a position slightly separated from the center portion of the mirror plate 9. The outer peripheral side of the blocking portion 8 is a connecting portion 11, and a through hole 11a is formed therein parallel to the axial direction. This through hole 11a is formed at the same interval as the through hole 7a in the circumferential direction for a plurality of turns.

[0015] When the connecting portion 11 is aligned with the flange 7, the circumferential direction of the cylindrical drum 4 side is adjusted so that the respective through holes 7a, 7a,... and the through holes 11a, 11a,... are communicated, and the bolt 12 is inserted and tightened with the nut 13, the cylindrical drum 4 and the blocking portion 8 are integrated, and one end face of the cylindrical drum 4 is blocked. One inner surface in the axial direction of the cylindrical drum 4 is composed of the mirror plate 9; and the blade plates 10, 10,... protrude toward the inside of the cylindrical drum 4. Note that, instead of directly joining the flange 7 and the connecting portion 11, it is also possible to provide a location for arranging an O-ring between the flange 7 and the blocking portion 8 and to form a structure that is sealed in a liquid-tight manner through the O-ring.

[0016] The cylindrical drum 4 is supported rotatably around a horizontal axis center by rollers 14, 14 inside the case 3. The cylindrical drum 4 and the blocking portion 8 are integrated as described above to form a processing portion 15, and this processing portion 15 is rotatable around a horizontal axis center. On the pedestal 2, a geared motor 16 with a speed reducer is mounted as a rotating means on the outer side of one longitudinal side of the case 3. The drive shaft of this geared motor 16 is connected to a rotating shaft 16a via a coupling 17. Further, the rotating shaft 16a enters the case 3 via a bearing 18, and its tip side is connected to the closing portion 8 using a fixing member 19. Therefore, by driving the geared motor 16, the closing portion 8 and the cylindrical drum 4 constituting the processing unit 15 rotate integrally around the axis.

[0017] Inside the case 3, a cleaning water supply pipe 20 and a raw material input pipe 21 enter from the side opposite to the side where the geared motor 16 is mounted. These pipes 20 and 21 enter the inside of the cylindrical drum 4 from the open end face of the cylindrical drum 4 and extend parallel to the axial direction inside the cylindrical drum 4. The cleaning water supply pipe 20 extends long in the axial center direction. The above-described fixing member 19 protrudes in the axial center direction, and the cross section perpendicular to the axial direction is circular. The cleaning water supply pipe 20 is externally fitted to this fixing member 19 via a resin ring that allows sliding.

[0018] The cleaning water supply pipe 20 is made of a high-strength material so that the pumping of water can be stopped. As a result, it is heavier, but since its tip is lifted and supported by the fixing member 19, it does not droop inside the cylindrical drum 4 and maintains a horizontally extended posture. The solid member 19 rotates around the axis, but the cleaning water supply pipe 20 slides, so it is not dragged by the movement, and the fixing member 19 slides relative to the cleaning water supply pipe 20. A plurality of ejection holes 20a, 20a,... are formed at regular intervals in a row on the lower peripheral surface of the cleaning water supply pipe 20. Water is ejected downward from these ejection holes 20a.

[0019] The raw material input pipe 21 extends at a position displaced in the circumferential direction from the cleaning water supply pipe 20, and its tip is open to form a discharge port 21a. This discharge port 21a faces the end plate 9 and is close to the protruding end of the blade plate 10, but does not intersect it. 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, an outlet 22 is provided by opening the circumferential surface of the case 3.

[0020] The entire case 3, along with the processing unit 15 housed inside, can be tilted using the tilting mechanism. This tilting mechanism will be explained according to the simplified diagrams in Figures 7 and 8. A pivot point 23 is mounted on the frame 2, and one longitudinal end of the case 3 is rotatably supported there. A support base 24 is also fixed on the frame 2, away from the pivot point 23. The upper surface of this support base 24 is an inclined upper surface 24a, which slopes downwards as it moves away from the pivot point 23. A mounting section 25 is fixed to the case 3, and the lower surface of this mounting section 25 is an inclined lower surface 25a that slopes in the same direction as the inclined upper surface 24a. When the other axial end of the case 3 is lifted 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 will have a downward slope, with the open end face being lower.

[0021] On the other hand, an air spring 26 is also provided near the support base 24. When air is injected into this air spring 26 and it extends upward from its standby position, the other axial end of the case 3 is lifted and supported by this air spring 26. In this case, the inclined upper surface 24a separates from the inclined lower surface 25a. In this state, the case 3 has an upward slope with the cylindrical drum 4 housed inside rising towards the open end face.

[0022] In relation to the processing unit 15 housed in case 3, the pivot point 23 is located on the side of the closed section 8, and the air spring 26 is located on the open end face side of the cylindrical drum 4, so the vertical positional relationship of the open end face side changes significantly. Furthermore, since the connecting shaft 16a is rotatably connected to the drive shaft of the gear motor 16 via the coupling 17, the connecting shaft 16a can also rotate in accordance with the rotation of case 3 described above. During the concentration process, the slope is set to an upward gradient, and during the cleaning process described later, it is set to a downward gradient. The expected gradient range is approximately ±5°.

[0023] The water-containing fiber raw material concentrator 1 is configured as described above, and since the cylindrical drum 4 can be easily attached to and detached from the closure section 8, multiple wire mesh 6 with different mesh sizes can be prepared, and by replacing the cylindrical drum 4 that constitutes the processing section 15, the mesh size of the wire mesh 6 can be changed. In other words, it can be used as one of the adjustment parameters. Furthermore, the rotational speed of the processing unit 15 can be adjusted using the reduction function of the gear motor 16 and frequency adjustment by inverter drive of the gear motor, and the inclination angle of the upward slope can also be adjusted by changing the amount of air in the air spring 26, so these can also be used as adjustment parameters.

[0024] In the water-containing fiber material concentrator 1, when water-containing fiber material is introduced into the rotating cylindrical drum 4 from the material input pipe 21, it is discharged from the discharge port 21a toward the end plate 9, where it collides with the end plate 9 and is kneaded by the blades 10, causing it to be dewatered and the fibers to begin to entangle with each other.

[0025] As the water-containing fiber material is continuously discharged, the preceding water-containing fiber material is pushed up the upward slope of the inner surface of the cylindrical drum 4, as if being pushed by the subsequent water-containing fiber material. As the rotating drum 4 rotates, the intertwining fibers are subjected to a twisting force, and as water is drained through the mesh of the wire mesh 6, the fibers intertwine like a squeezed hand towel, growing into rod-shaped clumps. These rod-shaped clumps fall out of the case 3 as they reach the open end surface of the cylindrical drum 4 and are discharged outside the case 3 through the discharge port 22.

[0026] The degree of growth of the rod-shaped mass, that is, the degree of concentration, can be easily adjusted while observing with the naked eye by adjusting the mesh size of the wire mesh 6, the inclination angle of the upward slope of the cylindrical drum 4, and the rotation speed of the cylindrical drum 4 as adjustment parameters. A larger mesh size improves drainage, a steeper upward slope increases the time it takes to climb within the cylindrical drum 4, and a faster rotation speed makes it more prone to twisting. These tendencies must be taken into consideration when making adjustments. As a result, by the time it is discharged, the degree of concentration can be made uniform to a certain extent across all parts of the body.

[0027] This water-containing fiber material concentrator 1 also has a washing function that utilizes a washing water supply pipe 20, and water is sprayed out from the spray holes 20a, 20a, ... Since the fibers are kneaded, when recycled paper is subjected to this water-containing fiber-based raw material concentrator 1 after the usual deinking process, inks and chemicals between the fibers are loosened and made easier to separate. By balancing the above adjustment parameters, a deinking effect close to 100% can be achieved.

[0028] Thus, although the water-containing fiber raw material concentrator 1 has a simple configuration, it can relatively easily homogenize the degree of concentration to a certain extent in accordance with the raw material. Furthermore, by giving the cylindrical drum 4 a downward slope on the open end side, any material that has accumulated inside the cylindrical drum 4 can be slid down and removed. If a cleaning function is included, the impact of the cleaning water can detach any material caught on the wire mesh 6, or the pressure of the cleaning water can be changed to facilitate sliding. As a result, cleaning the cylindrical drum 4 is made easier.

[0029] Although embodiments of the present invention have been described in detail above, the specific configuration is not limited to these embodiments, and any design changes or other modifications that do not depart from the spirit of the invention are also included in the invention. For example, a shower that can move 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 from the outside while moving to strip off fibers caught in the mesh of the wire mesh 6.

[0030] Alternatively, scoop plates that rise low toward the radial center may be provided on the inner circumferential surface of the flange 7 of the cylindrical drum 4 at regular intervals in the circumferential direction. Although the part that makes up the circumferential surface of the flange 7 cannot be made of wire mesh, if scoop plates are provided in this way, the raw material that has fallen there will be scooped up by the rotation of the cylindrical drum 4, making it easier to bring it to the wire mesh 6. [Explanation of symbols]

[0031] 1…Water-containing fiber raw material concentrator 2…Stand 3…Case 4…Cylindrical drum 5...Perforated metal 6...Wire mesh 7...Flange 7a...Through hole 8...Blocked section 9...End plate 10...Blade 11...Connecting part 11a...Through hole 12... Bolt 13... Nut 14... Roller 15... Processing unit 16... Gear motor 16a... Rotating shaft 17... Coupling 18... Bearing 19... Fixing member 20... Washing water supply pipe 20a... Discharge hole 21... Raw material input pipe 21a...discharge port 22...discharge port 23...fulcrum 24...Support base 24a...Inclined upper surface 25...Placement area 25a...Inclined bottom surface 26...Air spring

Claims

1. A water-containing fiber-based raw material concentrator characterized by comprising: a replaceable cylindrical drum rotatably supported around a horizontal axis, with a perforated metal lining and wire mesh forming a circumferential surface; a closing portion detachably attached to one axial end face of the cylindrical drum to close the one end face and form a processing section; a blade protruding from the inner surface of the closing side of the closing portion; a rotating means attached to the closing portion to rotate the processing section in a speed-adjustable manner; a raw material input pipe extending inward from the other axial end of the cylindrical drum and having a discharge port at a position close to the blade; and a tilting means for tilting the processing section from the closed axial end face of the cylindrical drum toward the open end face toward the other end face toward the open end face toward the closed side toward the open side toward the closed side.

2. In the water-containing fiber-based raw material concentrator described in claim 1, A water-containing fiber-based raw material concentrator is characterized in that the processing unit is housed in a case, one end of the case is rotatably supported along the axial direction of a cylindrical drum, and a vertical movement mechanism is attached to the other end, thereby forming a tilting mechanism.

3. In the water-containing fiber-based raw material concentrator described in claim 2, A water-containing fiber material concentrator characterized in that the vertical movement mechanism is composed of an air spring that biases the drum in an upward direction, and in the standby position of the air spring, the cylindrical drum has a downward slope from one closed axial end face toward the other open end face.

4. In the water-containing fiber-based raw material concentrator described in claim 1, A water-containing fiber-based raw material concentrator characterized in that a washing water supply pipe, having ejection holes formed on its circumferential surface, extends inward from the other axial end of the cylindrical drum, and its tip is supported so as to be slidable relative to the inner surface of a rotating closure.

5. In the water-containing fiber-based raw material concentrator described in claim 4, A water-containing fiber-based raw material concentrator characterized in that a rotating mechanism component protrudes as a projection from the center of the inner surface on the closed side of the closed section, and the tip of a washing water supply pipe is slidably fitted onto this projection.

Images