JP2021085113A - Defibrating treatment apparatus, and fiber treatment apparatus - Google Patents

Abstract

To provide a defibrating treatment apparatus and a fiber treatment apparatus for discharging by sieving into a useful defibrated matter and a waste defibrated matter so as not to disperse the waste defibrated matter in an apparatus.SOLUTION: The defibrating treatment apparatus 20 includes: a feeding hole 184 for feeding a raw material MA; a rotating body 110 having a plurality of rotating blades (defibrating inner blades 113) protruding in a direction separating from a rotating shaft; a stationary member 120 having a first screen 140 covering the rotating body 110 and having a plurality of first openings 141a, and a second screen 150 having a plurality of second openings 151a having a size larger than that of the first opening 141a of the first screen 140; a first discharge route 222 having a first discharge hole 172 and a second discharging hole 176 for discharging a defibrated matter defibrated by the defibrating inner blades 113, and for discharging the defibrated matter toward the first discharge hole 172 through the first screen 140; and a second discharge route 232 for discharging the defibrated matter toward discharge hole 176 through the screen 150.SELECTED DRAWING: Figure 3

Description

The present invention relates to a defibration processing device and a fiber processing device.

Conventionally, in a defibration processing device or a fiber processing device, a raw material is charged from a charging port, and a raw material is generated between an inner blade provided on the outer circumference of a rotating body and an outer blade provided on the inner circumference of a fixing member. It is defibrated. Then, the defibrated defibrated product is a mixture of defibrated products useful for producing paper and unnecessary defibrated products such as fillers, paper powder, and short fiber length fibers, and is discharged from the discharge port. (See, for example, Patent Document 1).

JP-A-2015-74848

However, when useful defibrated products and unnecessary defibrated products are mixed and discharged, there is a problem that the unnecessary defibrated products diffuse and contaminate the inside of the apparatus. In addition, there is a problem that unnecessary defibrated products are diffused from the manufactured paper, for example, to contaminate the surroundings.

The defibration processing apparatus covers the input port into which the raw material is charged, a rotating body having a plurality of rotating blades protruding in a direction away from the rotating shaft, and the rotating body, and has a plurality of first opening holes. A fixing member having one screen and a second screen having a plurality of second opening holes larger than the first opening hole of the first screen, and defibration of the charged raw material by the rotary blade. A first discharge path having a first discharge port and a second discharge port for discharging a substance, and the defibrated product being discharged toward the first discharge port via the first screen, and the first discharge port. A second discharge path for discharging the defibrated product toward the second discharge port via the two screens is provided.

In the defibration treatment apparatus, the average fiber length of the defibrated product discharged from the first discharge path is preferably shorter than the average fiber length of the defibrated product discharged from the second discharge path. ..

In the defibration processing apparatus, the first screen and the second screen may be arranged in the order of the first screen and the second screen from the input port side in the extending direction of the rotation axis. preferable.

In the above-mentioned defibration processing apparatus, a partition member for separating the defibrated product led out via the first screen and the defibrated product led out via the second screen may be provided. preferable.

In the defibration processing apparatus, the fixing member is provided with a fixed blade portion having a fixed blade on an inner peripheral surface facing the rotating body, and the fixed blade portion is provided in the extending direction of the rotating shaft. , It is preferable that the screen is arranged closer to the inlet side than the first screen.

In the above-mentioned defibration processing apparatus, it is preferable that at least a part of the first screen and the second screen is provided over one circumference of the rotating body in the rotation direction.

In the above-mentioned defibration processing apparatus, it is preferable that a first gas introduction port for introducing a gas toward the first screen is provided.

In the defibration treatment apparatus, it is preferable that the first gas introduction port is arranged on the opposite side of the first screen from the first discharge port.

In the defibration treatment device, it is preferable to use a blower that introduces the gas through the first gas introduction port.

In the above-mentioned defibration processing apparatus, it is preferable that a second gas introduction port for introducing a gas toward the second screen is provided.

In the above-mentioned defibration processing apparatus, it is preferable that the second gas introduction port is arranged on the side opposite to the second discharge port with respect to the second screen.

In the defibration treatment device, it is preferable to use a blower that introduces the gas through the second gas introduction port.

The fiber processing apparatus includes the defibrating processing apparatus according to any one of the above items, and a processing unit for processing the defibrated product defibrated by the defibrating processing apparatus.

The perspective view of the defibration processing apparatus which concerns on 1st Embodiment. The perspective view of the fixing member of the defibration processing apparatus. A cross-sectional view of the defibration processing device cut along a plane passing through the center of the shaft and the center of the second outlet pipe. A cross-sectional view of the defibration processing device cut along a horizontal plane passing through the central axis of the second outlet pipe. A cross-sectional view of the defibration processing apparatus according to the second embodiment cut along a plane passing through the center of the shaft and the center shaft of the second outlet pipe. A cross-sectional view of the defibration processing device cut along a horizontal plane passing through the central axis of the second outlet pipe. The schematic diagram which shows the structure of the sheet manufacturing apparatus which concerns on 3rd Embodiment.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

1. 1. The configuration of the defibration processing apparatus 20 will be described with respect to the first embodiment.
FIG. 1 is a perspective view of the defibration processing apparatus 20 according to the first embodiment. FIG. 2 is a perspective view of the fixing member 120 of the defibration processing device 20. Note that FIG. 2 is a perspective view in which the housing 170 and the upstream cover 180 are not shown from FIG.
The defibration processing device 20 is an apparatus that performs a processing process of unraveling a raw material MA in a state where a plurality of fibers are bound into one or a small number of fibers. The defibration treatment device 20 is a dry defibration treatment device that performs processing such as defibration in the air, not in a liquid.

As shown in FIGS. 1 and 2, the defibration processing device 20 in the present embodiment includes a rotating body 110 that rotates around a rotating shaft 118, and a fixing member 120 that covers the periphery of the rotating body 110. Further, the defibration processing device 20 includes a housing 170 that covers and accommodates the rotating body 110 and the fixing member 120, and upstream covers 180 and base covers 190 arranged at both ends of the housing 170.

FIG. 3 is a cross-sectional view of the defibration processing device 20 cut in a plane passing through the shaft center 210 and the center shaft 178a of the second outlet pipe 178.
The housing 170 is formed in a cylindrical shape extending along the rotation shaft 118 of the rotating body 110. In the present embodiment, a configuration will be described in which the housing 170 and the like extend in the vertical direction in response to the rotation shaft 118 extending in the vertical direction. However, the rotating shaft 118 of the rotating body 110 may be configured to extend in the horizontal direction, and the housing 170 or the like may be configured to extend in the horizontal direction accordingly. In the following description, the extending direction of the rotating shaft 118, that is, the extending direction of the axis center of the housing 170 or the like is referred to as an axial direction. Further, the radial center of the shape of the rotating body such as the rotating body 110 and the fixing member 120 is referred to as an axial center 210.

An upstream cover 180 is supported at one end opening 170a above the housing 170. The upstream cover 180 includes an annular lid 180a. The lid portion 180a is formed to have the same outer diameter as the outer diameter of the housing 170. An annular insertion portion 180b projecting downward is formed below the lid portion 180a. The upstream cover 180 is fixed to the housing 170 with the insertion portion 180b inserted into the opening 170a at one end of the housing 170.

A tubular inlet piping portion 180c extending in the vertical direction is formed at the radial center portion of the upstream cover 180. The inlet piping portion 180c communicates the outside of the upstream cover 180 with the inside of the housing 170. An inlet 184 that opens upward is provided above the inlet piping portion 180c. The raw material MA to be defibrated is input to the input port 184.

Two discharge ports, a first discharge port 172 and a second discharge port 176, which communicate with each other inside and outside the housing 170, are formed on the accommodating wall portion 170c on the outer peripheral portion of the housing 170. The first discharge port 172 and the second discharge port 176 discharge the defibrated product formed by the rotating body 110 and the fixing member 120 defibrating the raw material MA, respectively. The first outlet pipe 174 is connected to the first discharge port 172. A second outlet pipe 178 is connected to the second discharge port 176. The first outlet pipe 174 and the second outlet pipe 178 lead out the defibrated product defibrated by the rotating body 110 from the defibration processing apparatus 20, respectively.

As shown in FIGS. 1 and 3, a bearing support portion 181 is formed on the lower inner peripheral portion of the inlet piping portion 180c of the upstream cover 180. The bearing support portion 181 includes a circular support portion 181a and four base portions 181b extending orthogonally in four directions from the support portion 181a. A bearing 182 that rotatably supports the rotating body 110 is supported on the support portion 181a (see FIG. 3). Further, a space 181c that communicates in the vertical direction is generated between the adjacent base portions 181b, and the raw material MA input from the input port 184 is introduced into the housing 170 via the space 181c.

As shown in FIG. 3, the base cover 190 is supported by the other end opening 170b of the housing 170. The base cover 190 includes an annular body portion 190a. The main body 190a is formed to have the same outer diameter as the outer diameter of the housing 170. An annular insertion portion 190b projecting upward is formed in the main body portion 190a. The base cover 190 is fixed to the housing 170 with the insertion portion 190b inserted into the other end opening 170b of the housing 170. A bearing arrangement portion 190c recessed upward is formed at the radial center portion of the base cover 190. A bearing 191 that supports the rotating body 110 is arranged in the bearing arrangement portion 190c via a stay 192. The stay 192 is fixed to the base cover 190 with a bolt 194.

FIG. 4 is a cross-sectional view of the defibration processing device 20 cut along a horizontal plane passing through the central axis 178a of the second outlet pipe 178. Note that FIG. 4 is also a cross-sectional view cut along a horizontal plane passing through the central axis 172a of the first outlet pipe 174. In the present embodiment, the second outlet pipe 178 and the first outlet pipe 174 are symmetrically installed with the housing 170 in between when viewed from the axial direction.

As shown in FIG. 4, a rotating body 110 is arranged inside the housing 170. The rotating body 110 includes a rotating shaft 118 and a rotating body main body 111 fixedly supported by the rotating shaft 118. The rotating body body 111 is an integrally shaped block. As shown in FIG. 3, the rotating body main body 111 is formed from the upper part (upper part of the fixed blade portion 130) to the lower part (lower part of the second screen 150) of the fixing member 120 in the vertical direction. The rotating body body 111 includes a base 112 having a hole 112a through which the rotating shaft 118 is inserted, and four defibrated inner blades 113 projecting from the base 112 at right angles to each other in the radial direction. In other words, the rotating body 110 includes a defibrating inner blade 113 as four (plural) rotating blades that project in a direction away from the rotating shaft 118 and are formed along the extending direction of the rotating shaft 118. ..

The rotating body body 111 can be manufactured by casting, for example. The rotating shaft 118 and the rotating body main body 111 are fitted via the machine key 114. As a result, the rotating shaft 118 and the rotating body main body 111 can be integrally rotated in the circumferential direction.

As shown in FIG. 3, one end side of the rotating shaft 118 is rotatably supported by the bearing 182 of the upstream cover 180. The other end of the rotating shaft 118 is rotatably supported by the bearing 191 of the base cover 190.

The rotary shaft 118 is rotationally driven by a drive mechanism (not shown). In the present embodiment, the drive mechanism is composed of a chain and a sprocket, and power is transmitted to the chain and the sprocket from a rotational drive source (not shown) to drive the rotary shaft 118. The structure for rotationally driving the rotating shaft 118 does not have to be a chain and a sprocket.

The fixing member 120 is arranged on the radial outer side of the rotating body 110. The fixing member 120 is a member formed in a cylindrical shape extending along the rotation shaft 118 of the rotating body 110.

The fixing member 120 of the present embodiment includes a fixing blade portion 130, a first screen 140, and a second screen 150. The fixed blade portion 130 is provided on the input port 184 side in the axial direction. The first screen 140 is provided below the fixed blade portion 130 in the axial direction. The second screen 150 is provided on the base cover 190 side below the first screen 140 in the axial direction. Therefore, the first screen 140 and the second screen 150 are arranged in the order of the first screen 140 and the second screen 150 from the input port 184 side in the extending direction of the rotation shaft 118.

The fixing members 120 are arranged concentrically so as to cover the periphery of the rotating body 110 with gaps G1, G2, and G3 around the rotating body 110. Specifically, the gap G1 is a radial gap between the top 132a of the defibration outer blade 132 of the fixed blade portion 130 and the defibration inner blade 113 of the rotating body 110. The gap G2 is a radial gap between the inner peripheral surface of the first punching metal member 141 of the first screen 140, which will be described later, and the defibration inner blade 113 of the rotating body 110. The gap G3 is a radial gap between the inner peripheral surface of the second punching metal member 151, which will be described later, of the second screen 150 and the defibration inner blade 113 of the rotating body 110. In the present embodiment, the gap G2 and the gap G3 are set to be substantially the same. Further, the gap G1 is set smaller than the gap G2 and the gap G3.

As shown in FIG. 2, the fixed blade portion 130 is configured by laminating a plurality of fixed plates 131. Each fixing plate 131 is a plate-shaped member. The fixed plate 131 has an annular main body 131b when viewed from the axial direction. On the inner peripheral surface of the main body 131b facing the rotating body 110, a defibration outer blade 132 as a fixed blade protruding in a mountain shape in the radial direction is formed. The defibrated outer blades 132 are formed at equal intervals in the circumferential direction. The defibration outer blade 132 forms an uneven shape in the circumferential direction. The fixed plate 131 can be formed by punching, for example, a cold-rolled steel plate, a steel strip, or the like by a press.

In the fixed plate 131, the inner diameter which is the distance from the shaft center 210 to the top 132a of each defibration outer blade 132 is defined as R1. Further, the inner diameter which is the distance from the shaft center 210 to the valley portion 132b between each defibration outer blade 132 is defined as R2. The unevenness difference between the top 132a and the valley 132b of the defibration outer blade 132 is the difference between the inner diameter R2 and the inner diameter R1.

The fixing plate 131 is provided with a pair of fixing holes 131a penetrating in the thickness direction. A bolt 155 extending in the axial direction is inserted into the fixing hole 131a. The bolt 155 is fixed to the insertion portion 190b of the base cover 190.

The fixing plate 131 is positioned in the circumferential direction by inserting the bolt 155. The fixed blade portion 130 is formed by positioning the plurality of fixing plates 131 on the bolts 155 and stacking them. In the present embodiment, the positions of the blades of the defibrated outer blades 132 to be laminated are the same, and the top 132a and the valley 132b extend in a streak shape in the axial direction. A first screen 140 and a second screen 150 of the fixing member 120 are provided between the fixed blade portion 130 and the base cover 190.

The first screen 140 is composed of a cylindrical first punching metal member 141. Therefore, the fixing member 120 has a configuration in which the first screen 140 is arranged on the entire circumference of the rotating body 110 in the rotation direction. Specifically, the first screen 140 is provided over one circumference (the entire circumference) in the rotation direction. The first punching metal member 141 is formed with a plurality of circular hole-shaped first opening holes 141a penetrating in the thickness direction.

The first opening holes 141a of the present embodiment are formed at equal intervals in the axial direction. Further, the first opening holes 141a are formed side by side at the same pitch in the circumferential direction. The diameter of the first opening hole 141a is formed according to the fiber length of the defibrated product to be classified. The diameter of the first opening hole 141a of the present embodiment is 0.05 mm or more and less than 0.3 mm. The distance between the adjacent first opening holes 141a is formed to be about the diameter of the first opening holes 141a. As will be described later, the first screen 140 classifies defibrated products such as fillers, paper powder, and fibers having a short fiber length, which are unnecessary for sheet production such as paper.

The first punching metal member 141 of the present embodiment is composed of an integral (one piece) punching metal. However, the punching metal may be configured as a connecting body in which, for example, a plurality of arc-shaped punching metals are combined in the rotation direction of the rotating body 110 instead of the one-piece configuration.

As shown in FIG. 3, the first punching metal member 141 is arranged so as to face the first discharge port 172. The first punching metal member 141 is formed to have a total length in the axial direction longer than the diameter of the first discharge port 172.

In the first punching metal member 141, the inner diameter R11 of the inner peripheral surface is formed to be larger than the inner diameter R2 (see FIG. 2) of the valley portion 132b of the fixed blade portion 130. The gap G2 between the rotating body 110 and the inner peripheral surface is larger than the gap G1 between the rotating body 110 and the fixed blade portion 130. As a result, the defibrated product defibrated by the rotating body 110 and the fixed blade portion 130 does not leak to the outside of the first punching metal member 141, and the inner circumference of the rotating body 110 and the first punching metal member 141 is surely reached. Introduced in the gap G2 with the surface.

The outer diameter R12 of the first punching metal member 141 is formed to be smaller than the distance from the shaft center 210 to the bolt 155. The first punching metal member 141 is sandwiched and fixed between the fixed blade portion 130 and the partition member 145 in the axial direction. On the radial outer side of the first punching metal member 141, a cylindrical first space 221 is formed in a portion sandwiched between the fixed blade portion 130 and the partition member 145 described later. The first space 221 communicates with the space inside the first punching metal member 141 in the radial direction through the first opening hole 141a of the first punching metal member 141.

In the first space 221, a plurality of defibrated products defibrated by the fixed blade portion 130, the rotating body 110, and the first screen 140 and the rotating body 110 are provided in the axial direction of the first screen 140. 1 It is discharged through the opening hole 141a.

The second screen 150 is composed of a cylindrical second punching metal member 151. Therefore, the fixing member 120 has a configuration in which the second screen 150 is arranged on the entire circumference of the rotating body 110 in the rotation direction. Specifically, the second screen 150 is provided over one circumference (the entire circumference) in the rotation direction. The second punching metal member 151 is formed with a plurality of circular hole-shaped second opening holes 151a penetrating in the thickness direction.

The second opening holes 151a of the present embodiment are formed at equal intervals in the axial direction. Further, the second opening holes 151a are formed alternately at the same pitch in the circumferential direction. The diameter of the second opening hole 151a is formed according to the fiber length of the defibrated product to be classified. The diameter of the second opening hole 151a of the present embodiment is 0.3 mm or more and 1.0 mm or less. Therefore, the diameter of the second opening hole 151a is formed to be larger than the diameter of the first opening hole 141a of the first screen 140. The distance between the adjacent second opening holes 151a is formed to be about the diameter of the second opening hole 151a. In the second screen 150, as will be described later, for example, a defibrated product which is a fiber having a fiber length useful for producing a sheet such as paper is classified.

The second punching metal member 151 of the present embodiment is composed of an integral (one piece) punching metal. However, the punching metal may be configured as a connecting body in which, for example, a plurality of arc-shaped punching metals are combined in the rotation direction of the rotating body 110 instead of the one-piece configuration.

As shown in FIG. 3, the second punching metal member 151 is arranged so as to face the second discharge port 176. The second punching metal member 151 is formed to have a total length in the axial direction longer than the diameter of the second discharge port 176. The inner peripheral surface R13 of the second punching metal member 151 is formed to be larger than the inner diameter R2 (see FIG. 2) of the valley portion 132b of the fixed blade portion 130. The gap G3 between the rotating body 110 and the inner peripheral surface of the second punching metal member 151 is larger than the gap G1 between the rotating body 110 and the fixed blade portion 130.

The outer diameter R14 of the second punching metal member 151 is formed to be smaller than the distance from the shaft center 210 to the bolt 155. The second punching metal member 151 is sandwiched and fixed between the partition member 145 and the base cover 190 in the axial direction. On the radial outer side of the second punching metal member 151, a cylindrical second space 231 is formed in a portion sandwiched between the partition member 145 and the base cover 190, which will be described later. The second space 231 communicates with the space inside the second punching metal member 151 in the radial direction through the second opening hole 151a of the second punching metal member 151.

In the present embodiment, the inner diameter R11 and the outer diameter R12 of the first punching metal member 141 are configured to be the same as the inner diameter R13 and the outer diameter R14 of the second punching metal member 151, respectively.

In the second space 231, a plurality of defibrated products defibrated by the fixed blade portion 130 and the rotating body 110, the first screen 140 and the rotating body 110, and the second screen 150 and the rotating body 110 are arranged in the axial direction. It is discharged through the second opening hole 151a of the provided second screen 150.

A partition member 145 is provided between the first screen 140 and the second screen 150. As shown in FIGS. 2 and 3, the partition member 145 is composed of a plate-shaped and annular plate. The outer shape of the partition member 145 is formed in the same manner as the outer shape of the fixed plate 131 of the fixed blade portion 130. The inner circumference of the partition member 145 penetrates inside the first punching metal member 141 and the second punching metal member 151 in the radial direction.

The inner diameter R15 from the shaft center 210 of the partition member 145 is set smaller than the inner diameter R11 of the first punching metal member 141 and the inner diameter R13 of the second punching metal member 151. The gap between the inner diameter of the defibration outer blade 132 (inner diameter R1 of the top 132a) and the inner diameter R15 of the partition member 145 is the gap between the inner diameter R1 of the defibration outer blade 132 and the inner diameter R11 of the first screen 140. The gap between the two screens 150 and the inner diameter R13 is set to be smaller.

The inner diameter R15 from the shaft center 210 of the partition member 145 is set so as to have a minimum gap that does not collide with the defibrating inner blade 113 of the rotating body 110 even if it rotates in the circumferential direction. With this configuration, the residence time of the raw material MA in the first screen 140 can be extended, and defibration and classification can be promoted. Further, by providing the partition member 145, the waste defibrated product stays in the first screen 140 and is easily led out through the first opening hole 141a. Therefore, it becomes difficult to introduce unnecessary defibrated products into the second screen 150.

The partition member 145 is provided with a pair of fixing holes 145a penetrating in the thickness direction with respect to the fixing holes 131a of the fixing plate 131. The partition member 145 is positioned by passing the bolt 155 through the fixing hole 145a.

The axial position where the partition member 145 is installed is between the first screen 140 and the second screen 150, below the first discharge port 172, and above the second discharge port 176. .. The partition member 145 separates the defibrated product derived via the first screen 140 and the defibrated product derived via the second screen 150.

A housing 170 is arranged on the outer peripheral side of the fixing member 120. The first discharge port 172 faces the first screen 140, and the first space 221 communicates with the first discharge port 172. The cylindrical first space 221 between the first screen 140 and the housing 170 forms a first discharge path 222 communicating with the first discharge port 172 on the side opposite to the rotating body 110 with respect to the fixing member 120. To.

The defibrated product discharged to the first discharge path 222 moves toward the first discharge port 172 on the air flow of the first discharge path 222. Then, it is discharged to the outside of the defibration processing device 20 from the first discharge port 172 of the housing 170. As shown in FIG. 3, the input port 184 is formed on one end side of the rotating shaft 118, whereas the first discharging port 172 is formed at a substantially central portion in the axial direction of the rotating shaft 118. ..

The second discharge port 176 faces the second screen 150, and the second space 231 communicates with the second discharge port 176. The cylindrical second space 231 between the second screen 150 and the housing 170 forms a second discharge path 232 communicating with the second discharge port 176 on the side opposite to the rotating body 110 with respect to the fixing member 120. To.

The defibrated product discharged to the second discharge path 232 moves toward the second discharge port 176 on the air flow of the second discharge path 232. Then, it is discharged to the outside of the defibration processing device 20 from the second discharge port 176 of the housing 170.

As shown in FIG. 3, the input port 184 is formed on one end side of the rotating shaft 118, while the second discharge port 176 is formed on the other end side of the rotating shaft 118. The raw material MA charged from the charging port 184 is defibrated while moving between the fixing member 120 and the rotating body 110 along the axial direction of the rotating shaft 118.

Next, the operation of the defibration processing apparatus 20 will be described.
The defibration processing device 20 rotates the rotating body 110 by rotating the rotating shaft 118. Then, the raw material MA is dry-defibrated by guiding the raw material MA into the gaps G1, G2, and G3 between the rotating body 110 and the fixing member 120 by an air flow. The airflow is generated by the rotation of the rotating body 110.

In the present embodiment, the raw material MA charged from the inlet 184 of the defibration processing apparatus 20 is introduced into the housing 170 via the inlet piping portion 180c and the space 181c of the upstream cover 180. Inside the housing 170, the rotating body 110 is rotating, and the raw material MA is a gap between the defibrating inner blade 113 of the rotating body 110 and the defibrating outer blade 132 of the fixing member 120 (fixed blade portion 130). It is sent to G1.

Specifically, the raw material MA introduced inside the housing 170 is also introduced between the defibration inner blades 113 which are orthogonally adjacent to each other, but is sent to the gap G1 side by the centrifugal force due to the rotation of the rotating body 110. .. The raw material MA sent to the gap G1 flies by receiving the centrifugal force of the rotating body 110, collides with the defibration outer blade 132, is defibrated, and is defibrated.

Further, the raw material MA defibrated in the gap G1 is sent to the gap G2 between the defibrated inner blade 113 of the rotating body 110 and the first screen 140 of the fixing member 120. In the gap G2, the raw material MA that could not be completely defibrated by the fixed blade portion 130 is defibrated by colliding with the first screen 140.

In the present embodiment, the first opening hole 141a of the first screen 140 has a diameter smaller than that of the second opening hole 151a of the second screen 150, as described above. This is because the first screen 140 classifies the defibrated product that is unnecessary for sheet production, and the second screen 150 classifies the defibrated product that is useful for sheet production.

Therefore, in the present embodiment, the average fiber length of the defibrated product derived through the first opening hole 141a is shorter than the average fiber length of the defibrated product derived through the second opening hole 151a. In other words, the average fiber length of the defibrated product discharged from the first discharge path 222 is shorter than the average fiber length of the defibrated product discharged from the second discharge path 232. The diameter of the second opening hole 151a is set to match the fiber length useful for sheet production.

When the fiber collides with the first screen 140 and is defibrated, fillers and paper dust, which are unnecessary for sheet production, and fibers having a short fiber length are generated by the centrifugal force and the air flow received from the rotating body 110. , It is derived from the inside of the first screen 140 through the first opening hole 141a. The unnecessary defibrated product derived from the first screen 140 is discharged from the first discharge port 172 via the first discharge path 222, and is led out to the outside of the defibration processing device 20.

The first screen 140 classifies unnecessary defibrated materials such as fillers, paper dust, and fibers having a short fiber length, and the remaining defibrated products are the defibrated inner blade 113 of the rotating body 110 and the fixing member 120. Is sent to the gap G3 with the second screen 150 of. The defibrated product sent to the gap G3 flies by receiving the centrifugal force of the rotating body 110 and is defibrated by colliding with the second screen 150.

The defibrated product, which has been defibrated by colliding with the second screen 150 and whose fiber length is in the range suitable for sheet production, is used as a useful defibrated product by the centrifugal force or airflow received from the rotating body 110. It is derived from the inside of the second screen 150 through the second opening hole 151a. The useful defibrated product derived from the second screen 150 is discharged from the second discharge port 176 via the second discharge path 232 and is led out of the defibration processing device 20.

The fixing member 120 of the present embodiment includes a fixing blade portion 130 on the side of the insertion port 184 in the axial direction, a first screen 140 on the lower side thereof, and a second screen 150 on the lower side thereof. Therefore, the fixed blade portion 130 makes it possible to defibrate the raw material MA that has not been defibrated immediately after being fed from the charging port 184. Further, the first screen 140 and the second screen 150 can further advance the defibration of the raw material MA, and can separate and classify unnecessary defibrated products and useful defibrated products.

The first screen 140 has a first opening hole 141a having a diameter smaller than that of the second opening hole 151a, so that a filler, paper dust, a fiber material having a short fiber length, etc. Is led out of the fixing member 120 through the first opening hole 141a under the action of centrifugal force and airflow from the rotating body 110. In the second screen 150, the defibrated product introduced from the first screen 140 is subjected to the action of the centrifugal force and the air flow from the rotating body 110, and the defibrated product defibrated by the second screen 150 is subjected to the second screen. 2 It is led out of the fixing member 120 through the opening hole 151a. The defibrated product led out of the fixing member 120 through the second opening hole 151a is a defibrated product useful in sheet production, and the fiber length is in an appropriate range.

As described above, the defibrated product not used for sheet production can be separated and removed by the defibrating treatment apparatus 20, and the defibrated product used for sheet production can be separated and removed in an appropriate state (for example, within an appropriate fiber length range). It can be separated and taken out with a defibrated product).

In the conventional configuration, the raw material is charged from the charging port, and the raw material is defibrated between the defibrating inner blade provided on the outer circumference of the rotating body and the defibrating outer blade provided on the inner circumference of the fixing member. To. Then, the defibrated defibrated product is a mixture of defibrated products useful for producing paper and unnecessary defibrated products such as fillers, paper powder, and short fiber length fibers, and is discharged from the discharge port. Will be done.

Further, in the conventional configuration, the rotating body is arranged between the introduction port and the discharging port in the rotation axis direction, and the fixed blade portion covers the outer periphery of the defibrating inner blade of the rotating body in the entire rotation axis direction. The defibrating outer blade is arranged. Therefore, the defibrated product is discharged from the discharge port after passing through the entire space between the rotating body and the fixing member along the rotation axis direction regardless of the progress of defibration. Therefore, it is difficult to efficiently discharge the defibrated product.

Further, when the difference in unevenness on the inner surface of the fixing member is large like the defibration outer blade, the fluctuation of the internal pressure when the defibration inner blade of the rotating body rotates and passes through the defibration outer blade tends to be large, and the fixing member The noise may increase due to the vibration of the blade or the vibration of the air. The more the defibrating inner blade of the rotating body and the defibrating outer blade of the fixing member face each other, the louder the noise tends to be during the operation of the apparatus.

On the other hand, in the present embodiment, the fixing member 120 is composed of a first screen 140 and a second screen 150 in approximately two-thirds in the axial direction. Therefore, on the inner surface of the fixing member 120, the unevenness of the inner surface of the fixing member 120 is suppressed as compared with the conventional case in which the fixing blade portion 130 is provided in the entire axial direction. In particular, the first screen 140 and the second screen 150 are arranged in a cylindrical shape, and in the portion where the first screen 140 and the second screen 150 are arranged, the pressure fluctuation due to the rotation of the rotating body 110 is generated in the entire circumferential direction. It tends to get smaller. Therefore, by suppressing the fixed blade portion 130 provided on the fixing member 120 to the minimum necessary and providing the first screen 140 and the second screen 150 for classifying and taking out the defibrated product, the classification efficiency in the defibration processing apparatus 20 can be improved. It is possible to improve and improve quietness.

According to this embodiment, the following effects can be obtained.

The defibration processing apparatus 20 of the present embodiment includes a loading port 184 into which the raw material MA is charged, a rotating body 110 having a plurality of defibrating inner blades 113 (rotary blades) protruding in a direction away from the rotating shaft 118, and a rotating body 110. It has a fixing member 120 that covers the rotating body 110. The fixing member 120 includes a first screen 140 having a plurality of first opening holes 141a and a second screen 150 having a plurality of second opening holes 151a larger than the first opening holes 141a of the first screen 140. Have. Further, it has a first discharge port 172 and a second discharge port 176 for discharging the defibrated product defibrated by the defibration inner blade 113 with respect to the input raw material MA. Then, the defibrated product is discharged toward the first discharge port 172 via the first screen 140 and the defibrated product toward the second discharge port 176 via the second screen 150. A second discharge path 232 for discharge is provided.
As a result, the raw material MA charged from the charging port 184 is defibrated by the defibrating inner blade 113 of the rotating body 110 and the first screen 140. Among the defibrated defibrated products, those that can pass through the first opening hole 141a are discharged from the first discharge port 172 via the first opening hole 141a and the first discharge path 222. Further, the defibrated product defibrated by the defibrating inner blade 113 of the rotating body 110 and the second screen 150 passes through the second opening hole 151a larger than the first opening hole 141a and via the second discharge path 232. Then, it is discharged from the second discharge port 176. Therefore, the defibrated product can be classified according to its size and discharged. By classifying the defibrated product according to its size and discharging it, it is possible to prevent unnecessary diffusion of the defibrated product from the defibrating treatment device 20 to the outside.

In the defibration treatment apparatus 20, the average fiber length of the defibrated product discharged from the first discharge path 222 is shorter than the average fiber length of the defibrated product discharged from the second discharge path 232.
Thereby, unnecessary defibrated products and useful fibers can be classified according to the fiber length.

In the defibration processing apparatus 20, the first screen 140 and the second screen 150 are arranged in the order of the first screen 140 and the second screen 150 from the input port 184 side in the extending direction of the rotation shaft 118. ..
As a result, unnecessary defibrated filler, paper dust, and short fiber length fibers are first separated and removed by the first screen 140 having the first opening hole 141a smaller than the second opening hole 151a. Then, the second screen 150 allows the available useful defibrated material to be discharged. Therefore, the useful defibrated product can be reliably separated from the unnecessary defibrated product and classified.

The defibration processing apparatus 20 is provided with a partition member 145 that separates the defibrated product led out via the first screen 140 and the defibrated product led out via the second screen 150. ..
By providing such a partition member 145, the defibrated products derived via the first screen 140 and the second screen 150 are separated, so that the defibrated products are prevented from being mixed and the first discharge port is provided. It can be individually discharged to 172 and the second discharge port 176. In particular, in the first screen 140, it can be derived from the first opening hole 141a by retaining a filler of a fine member, paper dust, and a fiber having a short fiber length, which are unnecessary defibrated products. It can be difficult to introduce to the screen 150. Therefore, the defibrated products derived via the first screen 140 and the second screen 150 can be individually separated and classified, and the defibrated products can be prevented from being mixed.

In the defibration processing apparatus 20, the fixing member 120 is provided with a fixed blade portion 130 having a defibration outer blade 132 on an inner peripheral surface facing the rotating body 110. The fixed blade portion 130 is arranged on the insertion port 184 side of the first screen 140 in the extending direction of the rotating shaft 118.
As a result, by providing the fixed blade portion 130 in front of the first screen 140, the defibration of the raw material MA can be efficiently advanced, and the first screen 140 and the second screen 150 installed in the subsequent stage can be reliably defibrated. Can be classified.

In the defibration processing apparatus 20, at least a part of the first screen 140 and the second screen 150 is provided around the rotation direction of the rotating body 110.
As a result, pressure vibration due to the passage of the defibration inner blade 113, which is a rotating rotary blade, can be suppressed, and unevenness and noise in discharging the defibrated product can be prevented. Therefore, it is possible to improve the classification efficiency and the quietness of the defibration processing apparatus 20.

2. Second Embodiment Next, the second embodiment of the present invention will be described. The same parts as those in the above-described first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

FIG. 5 is a cross-sectional view of the defibration processing apparatus 20A according to the second embodiment cut along a plane passing through the shaft center 210 and the center shaft 178a of the second outlet pipe 178. FIG. 6 is a cross-sectional view of the defibration processing device 20A cut along a horizontal plane passing through the central axis 178a of the second outlet pipe 178. Note that FIG. 5 corresponds to FIG. 3 of the first embodiment, and FIG. 6 corresponds to FIG. 4 of the first embodiment. Further, FIG. 6 is also a cross-sectional view cut along a horizontal plane passing through the central axis 174a of the first outlet pipe 174.

The defibration processing device 20A of the present embodiment has a housing 270 instead of the housing 170 of the first embodiment. In the present embodiment, the configuration different from that of the first embodiment is that the first gas introduction port that communicates the inside and outside of the housing 270 with the housing wall portion 170c of the housing 270 separately from the first discharge port 172 and the second discharge port 176. 271, the second gas introduction port 275 is formed. Other configurations are the same as those in the first embodiment. In the present embodiment, the first gas introduction port 271 is provided above the second discharge port 176. Further, the second gas introduction port 275 is provided below the first discharge port 172.

The second gas introduction port 275 will be described.
The second gas introduction port 275 introduces gas into the defibration processing apparatus 20A. The second gas introduction port 275 is provided on the side opposite to the rotating body 110 with respect to the fixing member 120. In the present embodiment, the second gas introduction port 275 is arranged on the side opposite to the second discharge port 176 with respect to the second screen 150. The second gas introduction port 275 opens at a position facing the second screen 150. The second gas introduction port 275 introduces gas toward the second screen 150. The second gas introduction port 275 communicates with the second discharge path 232.

The diameter of the second gas introduction port 275 is formed in the same manner as the diameter of the second discharge port 176. A second gas introduction pipe 276 is connected to the second gas introduction port 275. A second blower 277 as a blower for sending gas to the second gas introduction port 275 is connected to the second gas introduction pipe 276. The second blower 277 introduces gas into the second discharge path 232 via the second gas introduction pipe 276 and the second gas introduction port 275.

The first gas introduction port 271 will be described.
The first gas introduction port 271 is also configured in the same manner as the second gas introduction port 275. The first gas introduction port 271 introduces gas into the defibration processing apparatus 20A. The first gas introduction port 271 is provided on the side opposite to the rotating body 110 with respect to the fixing member 120. In the present embodiment, the first gas introduction port 271 is arranged on the opposite side of the first screen 140 from the first discharge port 172. The first gas introduction port 271 opens at a position facing the first screen 140. The first gas introduction port 271 introduces gas toward the first screen 140. The first gas introduction port 271 communicates with the first discharge path 222.

The diameter of the first gas introduction port 271 is formed in the same manner as the diameter of the first discharge port 172. The first gas introduction pipe 272 is connected to the first gas introduction port 271. A first blower 273 as a blower for sending gas to the first gas introduction port 271 is connected to the first gas introduction pipe 272. The first blower 273 introduces gas into the first discharge path 222 via the first gas introduction pipe 272 and the first gas introduction port 271.

In the present embodiment, the second gas introduction port 275 is provided below the first discharge port 172. Further, the first gas introduction port 271 is provided above the second discharge port 176.

The operation of the defibration processing apparatus 20A will be described.
Similar to the first embodiment, the defibration processing apparatus 20A of the present embodiment is provided with a first screen 140 and a second screen 150 for classifying and taking out the defibrated product. Therefore, the fixed blade portion 130 provided on the fixing member 120 can be suppressed to the minimum necessary, and the classification efficiency in the defibrator can be improved and the quietness can be improved.

In the present embodiment, the second gas introduction port 275 communicates with the second discharge path 232, and the second blower 277 is connected to the second gas introduction port 275. Therefore, an air flow from the second gas introduction port 275 to the second discharge port 176 is applied to the second discharge path 232, and the defibrated product discharged to the second discharge path 232 is swiftly blown by the air flow by the second blower 277. To discharge. Further, the second blower 277 is arranged at a position different from that of the second discharge path 232, and the second blower 277 is on the upstream side with respect to the air flow. Therefore, the defibrated product does not flow into the second blower 277, and the blowing capacity of the second blower 277 is prevented from being lowered.

Further, in the present embodiment, the first gas introduction port 271 communicates with the first discharge path 222, and the first blower 273 is connected to the first gas introduction port 271. Therefore, an air flow from the first gas introduction port 271 to the first discharge port 172 is applied to the first discharge path 222, and the defibrated product discharged to the first discharge path 222 is swiftly blown by the air flow by the first blower 273. To discharge. Further, the first blower 273 is arranged at a position different from that of the first discharge path 222, and the first blower 273 is on the upstream side with respect to the air flow. Therefore, the defibrated product does not flow into the first blower 273, and it is possible to prevent the blowing capacity of the first blower 273 from being lowered.

According to this embodiment, the following effects can be obtained in addition to the effects of the first embodiment.

The defibration processing apparatus 20A of the present embodiment is provided with a second gas introduction port 275 for introducing a gas toward the second screen 150. By introducing the gas from the second gas introduction port 275 toward the second screen 150, an air flow for discharging the defibrated product is given to the second discharge path 232, so that the defibration is classified from the second screen 150. Things can be discharged efficiently.

In the defibration processing apparatus 20A, the second gas introduction port 275 is arranged on the side opposite to the second discharge port 176 with respect to the second screen 150. By arranging the second gas introduction port 275 on the side opposite to the second discharge port 176 with respect to the second screen 150, the second discharge path 232 is more efficiently provided with an air flow for discharging the defibrated product. And the defibrated product can be discharged.

In the defibration treatment device 20A, a second blower 277 is used as a blower for introducing gas through the second gas introduction port 275.
By providing the second blower 277 on the upstream side of the second gas introduction port 275, the defibrated product can be quickly discharged to the second discharge port 176 via the second discharge path 232.

The defibration processing apparatus 20A of the present embodiment is provided with a first gas introduction port 271 for introducing a gas toward the first screen 140.
By introducing the gas from the first gas introduction port 271 toward the first screen 140, an air flow for discharging the defibrated product is given to the first discharge path 222, so that the defibration is classified from the first screen 140. Things can be discharged efficiently.

In the defibration processing apparatus 20A, the first gas introduction port 271 is arranged on the opposite side of the first screen 140 from the first discharge port 172.
By arranging the first gas introduction port 271 on the opposite side of the first screen 140 from the first discharge port 172, the first discharge path 222 is more efficiently provided with an air flow for discharging the defibrated product. And the defibrated product can be discharged.

In the defibration treatment device 20A, the first blower 273 as a blower for introducing gas through the first gas introduction port 271 is used.
By providing the first blower 273 on the upstream side of the first gas introduction port 271, the defibrated product can be quickly discharged to the first discharge port 172 via the first discharge path 222.

3. 3. Third Embodiment Next, a third embodiment of the present invention will be described. The same parts as those in the above-described first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

FIG. 7 is a schematic view showing the configuration of the sheet manufacturing apparatus 100 according to the third embodiment. The sheet manufacturing apparatus 100 executes a regeneration process of converting the raw material MA containing fibers into fibers and regenerating them into a new sheet S. The sheet manufacturing apparatus 100 is an example of a fiber processing apparatus.

The sheet manufacturing apparatus 100 includes a storage and supply unit 10, a coarse crushing unit 12, a defibration unit 20B, a mixing unit 50, a deposition unit 60, a web forming unit 70, a transporting unit 79, a sheet forming unit 80, and a cutting unit 90. ..

The defibration section 20B of the sheet manufacturing apparatus 100 is composed of the defibration processing apparatus 20 of the first embodiment. Each of the mixing section 50, the deposition section 60, the web forming section 70, the transport section 79, the sheet forming section 80, and the cutting section 90 is a processing section 30 that processes the defibrated product defibrated by the defibration processing device 20. This is an example.

The storage and supply unit 10 is an automatic charging device that stores the raw material MA and continuously charges the raw material MA into the coarse crushing unit 12. The raw material MA may be any material containing fibers, for example, used paper, waste paper, and pulp sheet.

The coarse crushing unit 12 includes a coarse crushing blade 14 for cutting the raw material MA supplied by the accommodating supply unit 10, and the raw material MA is cut in the air by the coarse crushing blade 14 to make small pieces of several cm square. For the coarse crushing portion 12, for example, a shredder can be used. The raw material MA cut by the coarsely crushed portion 12 is collected by the hopper 9 and conveyed to the inlet 184 (see FIG. 3) of the defibrating portion 20B via the pipe 2.

Coarse crushed pieces are conveyed from the crushed portion 12 to the defibration portion 20B by an air flow. In the defibration section 20B, in the first embodiment, the coarse crushed pieces used as the raw material MA are put in from the charging port 184, and the crushed pieces are defibrated between the rotating body 110 and the fixing member 120. The coarsely crushed pieces defibrated by the defibration section 20B, that is, the defibrated products, are classified into defibrated products that are unnecessary for sheet production and defibrated products that are useful, as described in the first embodiment. The waste defibrated product is derived through the first outlet 172 (see FIG. 3). The useful defibrated product is derived via the second outlet 176 (see FIG. 3).

The unnecessary defibrated product is transferred from the defibrating portion 20B to the powder storage box 40 via the pipe 4 connected to the first outlet pipe 174 (see FIG. 3) by the air flow. The useful defibrated product is conveyed from the defibrated portion 20B to the mixing portion 50 via the pipe 3 connected to the second outlet pipe 178 (see FIG. 3) by the air flow as the first sorting product.

The mixing unit 50 mixes the first selection and the additive. The mixing unit 50 includes an additive supply unit 52 for supplying the additive, a pipe 54 for transporting the first selection and the additive, and a mixing blower 56.

The additive supply unit 52 supplies the additive composed of fine particles or fine particles inside the additive cartridge 52a to the pipe 54.

The additive supplied from the additive supply unit 52 contains a resin for binding a plurality of fibers, that is, a binder. The resin contained in the additive melts as it passes through the sheet forming portion 80 to bind a plurality of fibers.

The mixing blower 56 generates an air flow in the pipe 54 connecting the pipe 3 and the depositing portion 60. Further, the first sort product conveyed from the pipe 3 to the pipe 54 and the additive supplied to the pipe 54 by the additive supply unit 52 are mixed when passing through the mixing blower 56.

The deposit 60 loosens the fibers of the mixture and drops them onto the web forming portion 70 while dispersing them in the air. When the additive supplied from the additive supply unit 52 is fibrous, these fibers are also loosened at the deposition unit 60 and descend to the web forming unit 70.

The stacking portion 60 has a drum portion 61 and a housing portion 63 for accommodating the drum portion 61. The drum portion 61 is, for example, a cylindrical structure, which is rotated by the power of a motor (not shown) and functions as a sieve.

A web forming portion 70 is arranged below the drum portion 61. The web forming portion 70 includes, for example, a mesh belt 72, a tension roller 74, and a suction mechanism 76.

Of the mixture descending from the drum portion 61 located above the mesh belt 72, a component larger than the opening of the mesh belt 72 is deposited on the mesh belt 72. The components deposited on the mesh belt 72 have a web shape and form a web W.

In the transport path of the mesh belt 72, a humidity control portion 78 is provided on the downstream side of the deposit portion 60. The humidity control unit 78 is a mist type humidifier that makes water into a mist and supplies it toward the mesh belt 72. The humidity control unit 78 includes, for example, a tank for storing water (not shown) and an ultrasonic vibrator for making water into a mist (not shown). Since the water content of the web W is adjusted by the mist supplied by the humidity control unit 78, the effect of suppressing the adsorption of fibers to the mesh belt 72 due to static electricity can be expected.

The web W is peeled off from the mesh belt 72 by the conveying portion 79 and conveyed to the sheet forming portion 80. The transport unit 79 has, for example, a mesh belt 79a, a roller 79b, and a suction mechanism 79c. The suction mechanism 79c includes a blower (not shown), and the suction force of the blower generates an upward air flow through the mesh belt 79a.

Due to this air flow, the web W is separated from the mesh belt 72 of the web forming portion 70 and is attracted to the mesh belt 79a of the conveying portion 79. The mesh belt 79a is moved by the rotation of the roller 79b and conveys the web W to the sheet forming portion 80. Like the mesh belt 72, the mesh belt 79a can be made of an endless metal belt having an opening.

By applying heat to the web W, the sheet forming portion 80 binds the fibers derived from the first selection contained in the web W with the resin contained in the additive.

The sheet forming unit 80 includes a pressurizing unit 82 that pressurizes the web W, and a heating unit 84 that heats the web W pressurized by the pressurizing unit 82. The pressurizing unit 82 pressurizes the web W with a predetermined nip pressure by a pair of calendar rollers 85, and conveys the web W toward the heating unit 84. The heating unit 84 applies heat by sandwiching the densified web W between a pair of heating rollers 86, and conveys the heat to the cutting unit 90. The web W is heated to a higher temperature than the glass transition point of the resin contained in the web W in the heating unit 84 to become the sheet S.

The cutting portion 90 cuts the sheet S formed by the sheet forming portion 80. The cutting section 90 includes a first cutting section 92 that cuts the sheet S in a direction intersecting the transport direction of the sheet S indicated by reference numeral F in the drawing, and a second cutting section that cuts the sheet S in a direction parallel to the transport direction F. It has 94 and. The cutting portion 90 cuts the length and width of the sheet S into a predetermined size to form a single sheet S. The sheet S cut by the cutting portion 90 is housed in the discharging portion 96.

According to this embodiment, the following effects can be obtained.

The sheet manufacturing apparatus 100 of the present embodiment includes a defibration unit 20B composed of a defibration processing device 20, and a processing unit 30 for processing the defibrated product defibrated by the defibration processing device 20. The processing section 30 includes a mixing section 50, a deposit section 60, a web forming section 70, a transport section 79, a sheet forming section 80, and a cutting section 90. In the sheet manufacturing apparatus 100, since the defibration processing apparatus 20 of the first embodiment is used as the defibrating portion 20B, unnecessary defibrated products and useful defibrated products are used in the defibrating processing apparatus 20. And can be classified, unnecessary defibrated products can be discarded, and useful defibrated products can be transported to the mixing unit 50.

Conventionally, in a defibration processing apparatus, unnecessary defibrated products and useful defibrated products are discharged in a mixed state. Therefore, in the next step, the defibrated products deposited by being mixed and discharged are discharged. It was necessary to sort the fibers according to the size of the fibers, including the filler and paper dust, by suction removal with a mesh belt or the like. On the other hand, according to the sheet manufacturing apparatus 100 of the present embodiment, the size of the sheet manufacturing apparatus 100 can be reduced by omitting the configuration such as suction removal by the mesh belt.

Further, in the defibration section 20B (defibration processing device 20) located on the upstream side in the sheet manufacturing apparatus 100, unnecessary defibrated products are effectively classified and removed, so that the defibration section 20B is removed from the defibration section 20B to the outside. It is possible to prevent the diffusion of unnecessary defibrated products. Therefore, it is possible to suppress the diffusion and contamination of unnecessary defibrated products in the sheet manufacturing apparatus 100. As a result, it is possible to suppress the diffusion of unnecessary defibrated products from the produced sheet S.
In addition, in the sheet manufacturing apparatus 100 of the present embodiment, the quietness of the defibration unit 20B (defibration processing apparatus 20) is improved, so that the quietness of the sheet manufacturing apparatus 100 can be improved.

4. Modification 1
In the defibration processing apparatus 20 of the first embodiment, the fixing member 120 is composed of a fixed blade portion 130, a first screen 140, and a second screen 150. However, the present invention is not limited to this, and the configuration may be such that the fixed blade portion 130 is excluded. When the fixed blade portion 130 is removed, defibration and classification can be performed by defibrating on the first screen 140 and the second screen 150. This also applies to the defibration processing apparatus 20A of the second embodiment.

5. Modification 2
In the defibration processing apparatus 20A of the second embodiment, the first screen 140 and the second screen 150 are provided with a first gas introduction port 271 and a second gas introduction port 275. However, the present invention is not limited to this, and a gas inlet may be provided for either one.

6. Modification 3
The defibration section 20B of the sheet manufacturing apparatus 100 of the third embodiment includes the defibration processing apparatus 20 of the first embodiment. However, the present invention is not limited to this, and the defibration processing apparatus 20A of the second embodiment may be provided.

The contents derived from the above-described embodiment and modification are described below.

The defibration processing apparatus covers the input port into which the raw material is charged, a rotating body having a plurality of rotating blades protruding in a direction away from the rotating shaft, and the rotating body, and has a plurality of first opening holes. A fixing member having one screen and a second screen having a plurality of second opening holes larger than the first opening hole of the first screen, and defibration of the charged raw material by the rotary blade. A first discharge path having a first discharge port and a second discharge port for discharging a substance, and the defibrated product being discharged toward the first discharge port via the first screen, and the first discharge port. A second discharge path for discharging the defibrated product toward the second discharge port via the two screens is provided.

According to this configuration, the raw material charged from the charging port is defibrated by the rotary blade of the rotating body and the first screen. Among the defibrated defibrated products, those that can pass through the first opening hole are discharged from the first discharge port via the first opening hole and the first discharge path. Further, the defibrated product defibrated by the rotary blade of the rotating body and the second screen is discharged from the second discharge port via the second opening hole larger than the first opening hole and via the second discharge path. Will be done. As a result, the defibrated product can be classified according to size and discharged. By classifying the defibrated product according to its size and discharging it, it is possible to prevent unnecessary diffusion of the defibrated product from the defibrating treatment device to the outside.

In the defibration treatment apparatus, the average fiber length of the defibrated product discharged from the first discharge path is preferably shorter than the average fiber length of the defibrated product discharged from the second discharge path. ..

According to this configuration, the average fiber length of the defibrated product discharged from the first discharge route is shorter than the average fiber length of the defibrated product discharged from the second discharge route, so that the defibrated product is useful. , Unnecessary defibrated products can be classified according to the fiber length.

In the defibration processing apparatus, the first screen and the second screen may be arranged in the order of the first screen and the second screen from the input port side in the extending direction of the rotation axis. preferable.

According to this configuration, fine powders such as fillers, paper powder, and fibers having a short fiber length, which are unnecessary defibrated products, are first separated by a first screen having a first opening hole smaller than the second opening hole. And then the useful defibrated material is discharged by the second screen, so that the useful defibrated product can be obtained by reliable classification.

In the defibration processing apparatus, a partition member for separating the defibrated product led out via the first screen and the defibrated product led out via the second screen may be provided. preferable.

According to this configuration, by providing the partition member, the defibrated products derived through each screen are separated, so that the defibrated products are prevented from being mixed with each other, and the first discharge port and the second discharge port are prevented. Each can be discharged individually.

In the defibration processing apparatus, the fixing member is provided with a fixed blade portion having a fixed blade on an inner peripheral surface facing the rotating body, and the fixed blade portion is provided in the extending direction of the rotating shaft. , It is preferable that the screen is arranged closer to the inlet side than the first screen.

According to this configuration, by providing a fixed blade portion in front of the first screen and the second screen to proceed with the defibration of the raw material, reliable classification is performed in the first screen and the second screen installed in the subsequent stage. be able to.

In the above-mentioned defibration processing apparatus, it is preferable that at least a part of the first screen and the second screen is provided over one circumference in the rotation direction of the rotating body.

According to this configuration, at least a part of the first screen and the second screen is provided over one circumference in the rotation direction of the rotating body, thereby suppressing pressure vibration due to the passage of the rotating rotary blade and discharging the defibrated material. Unevenness and noise can be prevented.

In the above-mentioned defibration processing apparatus, it is preferable that a first gas introduction port for introducing a gas toward the first screen is provided.

According to this configuration, since it is possible to provide an air flow for discharging the defibrated product, the defibrated product classified by the first screen can be efficiently discharged.

In the above-mentioned defibration treatment apparatus, it is preferable that the first gas introduction port is arranged on the side opposite to the first discharge port with respect to the first screen.

According to this configuration, the first gas introduction port is arranged on the opposite side of the first screen from the first discharge port, so that the air flow that discharges the defibrated product into the first discharge path more efficiently. Can be applied and the defibrated product can be discharged.

In the defibration treatment device, it is preferable to use a blower that introduces the gas through the first gas introduction port.

According to this configuration, by providing the blower on the upstream side of the first gas introduction port, the defibrated product can be quickly discharged to the first discharge port through the first discharge path.

In the above-mentioned defibration processing apparatus, it is preferable that a second gas introduction port for introducing a gas toward the second screen is provided.

According to this configuration, since it is possible to provide an air flow for discharging the defibrated product, the defibrated product classified by the second screen can be efficiently discharged.

In the defibration processing apparatus, the second gas introduction port is preferably arranged on the side opposite to the second discharge port with respect to the second screen.

According to this configuration, the second gas introduction port is arranged on the side opposite to the second discharge port with respect to the second screen, so that the air flow that discharges the defibrated product into the second discharge path more efficiently. Can be applied and the defibrated product can be discharged.

In the defibration treatment device, it is preferable to use a blower that introduces the gas through the second gas introduction port.

According to this configuration, by providing the blower on the upstream side of the second gas introduction port, the defibrated product can be quickly discharged to the second discharge port through the second discharge path.

The fiber processing apparatus includes the defibrating processing apparatus according to any one of the above items, and a processing unit for processing the defibrated product defibrated by the defibrating processing apparatus.

According to this configuration, by equipping the fiber processing device with a defibrating treatment device, unnecessary defibrated products are classified and removed, so that the diffusion of unnecessary defibrated products from the defibrating treatment device to the outside is prevented. can do. Therefore, it is possible to suppress the diffusion and contamination of unnecessary defibrated products in the fiber processing apparatus provided with the defibrating processing apparatus.
In addition, since the defibrated product can be classified and discharged in the defibration processing device, the defibrated product discharged from the defibrating processing device, which has been conventionally required in the configuration of the processing unit, is deposited. Since the configuration such as suction removal with the mesh belt can be omitted at the time of the operation, the size of the fiber processing apparatus can be reduced.

20, 20A ... defibration processing device, 20B ... defibrating section, 30 ... processing section, 100 ... sheet manufacturing device as an example of fiber processing device, 113 ... defibrating inner blade as an example of rotary blade, 110 ... rotating body , 118 ... rotary shaft, 120 ... fixed member, 130 ... fixed blade, 132 ... defibrated outer blade, 140 ... first screen, 141a ... first opening hole, 145 ... partition member, 150 ... second screen, 151a ... 2nd opening hole, 172 ... 1st discharge port, 176 ... 2nd discharge port, 184 ... Input port 222 ... 1st discharge path, 232 ... 2nd discharge path, 271 ... 1st gas introduction port, 273 ... Blower First blower as, 275 ... second gas inlet, 277 ... second blower as blower, MA ... raw material.

Claims (13)

The input port where raw materials are input and
A rotating body having a plurality of rotating blades protruding in a direction away from the rotating axis,
A fixing member that covers the rotating body and has a first screen having a plurality of first opening holes and a second screen having a plurality of second opening holes larger than the first opening hole of the first screen. ,
It has a first discharge port and a second discharge port for discharging the defibrated product obtained by defibrating the charged raw material by the rotary blade.
A first discharge path through which the defibrated product is discharged toward the first discharge port via the first screen, and
A second discharge path through which the defibrated product is discharged toward the second discharge port via the second screen, and
A defibration processing device characterized in that The defibration processing apparatus according to claim 1.
A defibration treatment apparatus characterized in that the average fiber length of the defibrated product discharged from the first discharge route is shorter than the average fiber length of the defibrated product discharged from the second discharge route. The defibration processing apparatus according to claim 1 or 2.
The defibration processing apparatus, wherein the first screen and the second screen are arranged in the order of the first screen and the second screen from the input port side in the extending direction of the rotation axis. The defibration processing apparatus according to any one of claims 1 to 3.
A defibration processing apparatus characterized in that a partition member for separating the defibrated product derived via the first screen and the defibrated product led out via the second screen is provided. The defibration processing apparatus according to claim 3 or 4.
The fixing member is provided with a fixed blade portion having a fixing blade on an inner peripheral surface facing the rotating body.
A defibration processing apparatus characterized in that the fixed blade portion is arranged on the inlet side of the first screen in the extending direction of the rotating shaft. The defibration processing apparatus according to any one of claims 3 to 5.
A defibration processing apparatus, characterized in that at least a part of the first screen and the second screen is provided around the rotation direction of the rotating body. The defibration processing apparatus according to any one of claims 1 to 6.
A defibration processing apparatus characterized in that a first gas introduction port for introducing a gas toward the first screen is provided. The defibration processing apparatus according to claim 7.
The defibration processing apparatus, wherein the first gas introduction port is arranged on the side opposite to the first discharge port with respect to the first screen. The defibration processing apparatus according to claim 7 or 8.
A defibration processing device characterized in that a blower for introducing the gas through the first gas introduction port is used. The defibration processing apparatus according to any one of claims 1 to 6.
A defibration processing apparatus characterized in that a second gas introduction port for introducing gas toward the second screen is provided. The defibration processing apparatus according to claim 10.
The defibration processing apparatus, wherein the second gas introduction port is arranged on the side opposite to the second discharge port with respect to the second screen. The defibration processing apparatus according to claim 10 or 11.
A defibration processing device characterized in that a blower for introducing the gas through the second gas introduction port is used. The defibration processing apparatus according to any one of claims 1 to 12.
A processing unit that processes the defibrated product defibrated by the defibration processing device, and
A fiber processing apparatus characterized by comprising.

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