JPH0860578A - Refiner and method for attaching disc therefor - Google Patents

Abstract

PURPOSE: To provide a refiner reduced, to a minimum practicable, in the load on 1st and/or 2nd screw members when a revolving shaft revolves. CONSTITUTION: In a refiner having a 1st disc, a disc-shaped refiner 11 facing to the 1st disc, plural 2nd discs 12 on the side of the refiner 11, and bolts with which the 2nd discs 12 are fixed to the refiner 11, the arc surface outside the 2nd discs 12 is provided with a holding pawl and the outer peripheral surface the refiner 11 is provided with a holding groove to position the 2nd discs 12 circumferentially relative to the refiner 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refiner used for beating, for example, a fiber raw material, and a disc mounting method for the refiner.

[0002]

2. Description of the Related Art FIG. 3 is a front sectional view showing a conventional refiner A. A first supply port 101 is provided in the casing 100, and a movable block 103 having a second supply port 102 is provided inside the casing 100.

The beating chamber B formed by the casing 100 and the movable block 103 is communicated with a first supply port 101 and a second supply port 102 and a discharge port 104.

A plurality of first disks 105 and 106, which are divided in the circumferential direction, are attached to the opposing surfaces of the casing 100 and the movable block 103. The blade surfaces 105 are provided on the side surfaces of the disks 105 and 106, respectively.
A and 106A are formed.

A rotary shaft 111 is inserted inside the first disks 105 and 106, and a disk-shaped runner 107 facing the first disks 105 and 106 is provided on the rotary shaft 111. Blade surfaces 105A, 10 of the runner 107
A plurality of second disks 109, 110 divided along the circumferential direction are attached at positions facing 6A. Blade surface 105 of the plurality of second disks 109, 110
The blade surfaces 109A, 11 are provided on the side surfaces facing the A, 106A.
0A is formed respectively. Blade surface 105A and blade surface 10
A small gap of several μm is set between the blade surface 9A and the blade surface 106A and the blade surface 110A.

FIG. 4 is a perspective view showing a fixing mechanism of the second disk 109. A plurality of internal threads 112 are formed on the side surface of the runner 107 along the circumferential direction, and holes 113 penetrating in the axial center C direction of the rotary shaft 111 are formed in the plurality of second disks 109, respectively. is there.

A screw member 114 is inserted into the hole 113 and tightened to fix the plurality of second disks 109 to the runner 107.

On the outer circumference of the runner 107, an annular rib 115 protruding along the direction of the axis C is provided to position the second disk 109 in the radial direction.

The first disks 105 and 106 are also fixed in the same structure as the second disks 109 and 110.

The reason why the plurality of first disks 105, 106 and second disks 109, 110 are divided along the circumferential direction is that the casing 100,
This is for facilitating attachment and detachment work to and from the runner 107.

Two bearings 1 provided on the casing 100 side
16 and 117 hold the rotary shaft 111, and the rotary shaft 1
One end of 11 is connected to a drive source (not shown).

In the above structure, the rotating shaft 111 is rotated and a raw material, for example, a fiber raw material (not shown) is supplied to the beating chamber beating chamber B through the first supply port 101 and the second supply port 102.

Then, the pulp has blade surface 105A and blade surface 10
9A and between the blade surface 106A and the blade surface 110A, while being beaten, it moves to the outer peripheral side by centrifugal force, and the discharge port 1
It is discharged from 04.

[0014]

In the above conventional example, when the rotary shaft 111 rotates, the plurality of first disks 105, 1
A load in the circumferential direction is applied to 06 by frictional resistance with pulp, and all the load is applied to the screw member, while a load due to inertial force is applied to the screw member 108 on the side of the plurality of second disks 109, 110.

For this reason, many screw members are used or the screw members are thickened.

As a result, the effective area of the blade surfaces 109A and 110A is reduced by 7 to 10%, the beating efficiency is lowered, and the tightening and loosening operations of the screw member 108 are increased to increase the number of the second disks 109 and 110. There was a problem that the installation and removal work was troublesome.

The present invention is for solving the above problems, and is a refiner for reducing the load applied to a screw member fixing a plurality of first discs and a plurality of second discs as much as possible during rotation of a rotary shaft. And a refiner disk mounting method.

[0018]

In order to achieve the above object, the invention according to claim 1 is a plurality of first disks mounted on a casing and divided in the circumferential direction,
A first screw member that is fixed by penetrating the plurality of first disks in the thickness direction from the blade surface, and is attached to a runner of a rotary shaft so as to face the first disks and is divided along the circumferential direction. A plurality of second discs, and a second screw member that penetrates and fixes the plurality of second discs in the thickness direction from the blade surface, wherein the plurality of first discs or the plurality of second discs A locking member is provided on an outer peripheral surface other than the blade surface of at least one of the disks, and a locked member that is locked with the locking member is provided on at least one of the casing and the runner.

According to a second aspect of the present invention, a plurality of substantially fan-shaped first disks attached to the casing and divided in the circumferential direction, and a plurality of the first disks in the thickness direction from the blade surface. A first screw member that penetrates through and is fixed to the runner of the rotating shaft, and is attached to the first disk so as to face the first disk, and has a plurality of substantially fan-shaped second disks divided along the circumferential direction; A second screw member having a plurality of second discs penetrating and fixed in the thickness direction from the blade surface, and a plurality of first discs or a plurality of second discs, at least one of the discs A locking member is provided on the outer arc surface, and a locked member that locks with the locking member is provided on at least one of the casing and the runner.

According to a third aspect of the present invention, among the plurality of first disks or the plurality of second disks, at least one of the disks is provided with an engaging member on the outer peripheral surface other than the blade surface, and the runner of the casing or the rotary shaft is provided with Of the plurality of first discs or the plurality of second discs are positioned in the circumferential direction to be opposed to each other by engaging with a locked member provided on at least one of the first and the plurality of first discs. A second step of fixing the plurality of first disks to the casing by a first screw member penetrating the disk in the thickness direction from the blade surface, and a second step of penetrating the plurality of second disks in the thickness direction from the blade surface. And a third step of fixing the second disk to the runner with two screw members.

[0021]

According to the present invention, the load of at least one of the plurality of first disks and the plurality of second disks when the rotating shaft is rotated is distributed to the screw member, the locking member and the locked member. To be done.

The invention according to claim 2 has the same effect as the invention according to claim 1, and since the locking member is located outside the plurality of first disks or the plurality of second disks,
Easy to see.

According to a third aspect of the present invention, among the plurality of first disks or the plurality of second disks when the rotary shaft rotates,
At least one load is distributed to the screw member, the locking member, and the locked member.

[0024]

1 is a front sectional view showing a refiner D according to an embodiment of the present invention. A first supply port 2 is provided in the upper part of the casing 1 along the vertical direction, and a shaft hole 1A is provided below the first supply port 2 along the substantially horizontal direction. A movable block 4 having a second supply port 3 is provided inside the casing 1.

A shaft hole 4A is provided in the movable block 4 along a substantially horizontal direction. The inner diameters of the shaft hole 4A and the shaft hole 1A are set to be the same and are arranged concentrically. Also,
The movable block 4 can be reciprocally moved in a substantially horizontal direction by an operating portion such as a hydraulic cylinder (not shown).

The first supply port 1 is provided with respect to substantially the center of the beating chamber E formed by the combination of the casing 1 and the movable block 4.
And the second supply port 3 communicates with each other, and the discharge port 5 communicates with the lower portion of the beating chamber E.

On the opposing surfaces of the casing 1 and the movable block 4, a plurality of substantially fan-shaped first disks 6 and 7 each made of metal and divided along the circumferential direction are attached along the circumferential direction. There is. 1st disk 6 and 7 are shaft holes 1
They are arranged concentrically with A and 4A, and blade surfaces 8 and 9 are formed on their side surfaces, respectively.

The rotary shaft 10 is inserted inside the first disks 6, 7 and the shaft holes 1A, 4A, and a disc-shaped runner 11 is provided at a position corresponding to the beating chamber E. The runner 11 may be integrally joined and fixed to the rotating shaft 10, or may be a separate member and fitted and fixed.

The rotary shaft 10 is movable along a substantially horizontal axis F, is held by two bearings 16 and 17 provided outside the casing 1, and is driven by a drive source (not shown). Is rotated.

The runner 11 is located between the first disks 6 and 7, and is made of metal on both side surfaces of the runner 11. The runner 11 is divided along the circumferential direction and has a plurality of substantially fan-shaped second disks 12. 1
3 is attached.

In the plurality of second disks 12 and 13,
Blade surfaces 14 and 15 are formed on the side surfaces facing the blade surfaces 8 and 9, respectively. Between the blade surface 8 and the blade surface 14, and the blade surface 9
A minute gap of several μm is set between the blade surface 15 and the blade surface 15.

This minute gap can be arbitrarily adjusted by moving the rotary shaft 10 and the movable block 4 in accordance with the conditions such as the type of raw material.

FIG. 2 is a perspective view showing the structure of the plurality of second disks 12 and the runner 11, and the plurality of second disks 1
For example, 2 is equally divided into four at 90 degree intervals. Locking members, for example, locking claws 21 protruding in the radial direction are provided on the outer circular arc surfaces of the plurality of second disks 12, respectively.

A plurality of female threads 18 are formed on the side surface of the runner 11 along the circumferential direction, and the plurality of second disks 12 are formed in the thickness direction thereof, that is, in the axial center F direction of the rotary shaft 10. Holes 19 penetrating through are formed respectively.

A screw member, for example, a bolt 20 is inserted into each hole 19, and the bolt 20 is screwed into an internal thread 18 and tightened to fix the plurality of second disks 12 to the runner 11.

An annular rib 22 is provided on the outer peripheral surface of the runner 11 so as to project along the axial center F direction. The rib 22 is provided with a member to be locked, for example, a plurality of locking grooves 23. is there.

The structure of the plurality of second disks 13 and the fixing mechanism to the runner 11 are the same as those of the second disk 12. Also, holes are formed through each of the plurality of first disks 6 and 7 along the thickness direction, and fixed to the casing 1 and the movable block 4 by a second screw member inserted in the holes, for example, a bolt. is there.

In the above structure, when the rotary shaft 10 is rotated and a raw material, for example, a fiber raw material (not shown) is supplied to the beating chamber B through the first supply port 2 and the second supply port 3, the fiber raw material is generated. While being beaten between the blade surface 8 and the blade surface 14 and between the blade surface 9 and the blade surface 15, it moves to the outer peripheral side by centrifugal force and is discharged from the discharge port 5.

During the rotation of the rotary shaft 10, the load generated by the centrifugal force of the plurality of second disks 12 and 13 is received by the bolt 20 and the rib 22.

The plurality of second disks 12 are circumferentially positioned and fixed with respect to the runner 11 by locking the locking claws 21 and the locking grooves 23, and the plurality of second disks 12 are fixed by the bolts 20. Are fixed in the thickness direction and the radial direction, respectively, the load generated by the inertial force of the plurality of second disks 12 when the runner 11 is rotated is distributed to the bolt 20, the locking claw 21, and the locking groove 23. To be done.

Therefore, the number of bolts 20 for each of the plurality of second disks 12 is reduced or the bolts 20 are thinned to secure the effective area of the blade surfaces 14 and 15 as wide as possible (total 3 %), The beating efficiency of the fiber raw material is improved, and the work of tightening and loosening the bolt 20 is reduced, and the work of attaching and detaching the plurality of second disks 12 and 13 can be simplified. .

Further, since the locking claws 21 are located on the outer peripheral surfaces of the plurality of second disks 12 and 13 and the locking grooves 23 are located on the outer peripheral surface of the runner 11, the plurality of second disks 1 are arranged.
It is easy to visually check the locking claw 21 and the locking groove 23 when mounting the second and the third disks 13, and the positioning work of the plurality of second disks 12 and 13 can be performed quickly.

The plurality of first disks 6, 7 and the casing 1 and the movable block 4 may be provided with locking claws and locking grooves similar to the above. With this structure, the rotating shaft 1
Since the load of the plurality of first disks 6 and 7 due to the frictional resistance with the fiber raw material at the time of 0 rotation is distributed to the bolts, the locking claws and the locking grooves, the same effect as described above can be obtained.

The plurality of first disks 6 in this embodiment
7 and the plurality of second disks 12 and 13 were fixed by the following three steps.

The engaging member provided on at least one of the plurality of first disks 6 and 7 or the plurality of second disks 12 and 13 is engaged with at least one of the casing 1 and the runner 5. A plurality of first disks 6, 7 or a plurality of second disks 1 engaged with a stop member
A first step in which the Nos. 2 and 13 are circumferentially positioned and face each other.

The second step of fixing the plurality of first disks 6, 7 to the casing 1 by the first screw member penetrating the plurality of first disks 6, 7 from the blade surface in the thickness direction.

The second disk 1 is formed by a second screw member penetrating the plurality of second disks 12 and 13 from the blade surface in the thickness direction.
Third step of fixing 2, 13 to the runner 5.

The order of the second step and the third step may be performed first.

In this embodiment, two first disks and two second disks are provided, but the present invention can be applied to a refiner having one first disk and one second disk.

Further, the locking member is, for example, a locking groove, and the locked member is, for example, a locking claw, and the plurality of second disks are circumferentially positioned by the locking of the locking claw and the locking groove. Even if fixed, the same effect can be obtained.

Further, even if the locking member and the locked member are provided on the side surfaces of the plurality of second disks and the holding member which face each other, the same effect can be obtained.

Further, as the screw member, for example, a stud bolt may be provided on a side surface of the holding member, and the stud bolt may be inserted into the holes of the plurality of second disks and tightened and fixed by the nut.

The number of divisions of the plurality of second disks can of course be set arbitrarily, and may be used for crushing other raw materials such as livestock manure, garbage and coffee beans.

[0054]

As described above, in the invention according to claim 1, the plurality of first discs or the plurality of second discs added to at least one of the first screw member and the second screw member at the time of rotation of the rotary shaft. The load can be reduced as much as possible.

Therefore, the number of the first screw member or the second screw member is reduced for each of the plurality of first discs or the plurality of second discs, or the first screw member or the second screw member is thinned to make the blade. If the effective area of the surface is secured as wide as possible, the beating efficiency of the raw material is improved.

Further, the work of tightening and loosening the first screw member or the second screw member is reduced, and the work of attaching and detaching the plurality of first disks or the plurality of second disks can be simplified.

The invention according to claim 2 has the same effect as that of the invention according to claim 1, and the locking member is located on the outer circular arc surface of the plurality of first disks or the plurality of second disks. It is easy to visually check the locking member when mounting the plurality of first disks or the plurality of second disks, and it is possible to quickly perform the positioning operation of the plurality of first disks or the plurality of second disks.

In the invention according to claim 3, the load of the plurality of first disks or the plurality of second disks applied to at least one of the first screw member and the second screw member at the time of rotation of the rotary shaft is minimized. Can be reduced.

Therefore, the number of the first screw members or the second screw members may be reduced for each of the plurality of first discs or the plurality of second discs, or the first screw member or the second screw member may be thinned to make a blade. If the effective area of the surface is secured as wide as possible, the beating efficiency of the raw material is improved.

Further, the work of tightening and loosening the first screw member or the second screw member is reduced, and the work of attaching and detaching the plurality of first disks or the plurality of second disks can be simplified.

[Brief description of drawings]

FIG. 1 is a front sectional view showing a refiner according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a refiner runner and a plurality of second disks according to an embodiment of the present invention.

FIG. 3 is a front sectional view showing a refiner of a conventional example.

FIG. 4 is a perspective view showing a main part of a refiner of a conventional example.

[Explanation of symbols]

 8,9 Blade surface 6,7 First disk 10 Rotating shaft 11 Runner 14,15 Blade surface 12,13 Second disk 20 Bolt (screw member) 21 Locking claw (locking member) 23 Locking groove (locked) Element)

Claims (3)

[Claims] 1. A plurality of first disks mounted on a casing and divided along a circumferential direction, and a first screw member fixed to the plurality of first disks by penetrating from the blade surface in the thickness direction. A plurality of second discs that are attached to the runner of the rotary shaft so as to face the first disc and that are divided along the circumferential direction, and penetrate the second discs in the thickness direction from the blade surface. In a refiner having a second screw member fixed by, a locking member is provided on an outer peripheral surface other than a blade surface of at least one of the plurality of first disks or the plurality of second disks, A refiner in which at least one of a casing and the runner is provided with a locked member that locks with the locking member. 2. A plurality of substantially fan-shaped first disks attached to a casing and divided along the circumferential direction, and a plurality of the first disks fixed by penetrating from the blade surface in the thickness direction. A first screw member, a plurality of second discs, which are attached to a runner of a rotary shaft so as to face the first disc, and which are divided in a circumferential direction, and which are substantially fan-shaped; A refiner having a second screw member penetrating and fixed in a thickness direction from a blade surface, wherein a second screw member fixed to an outer circular arc surface of at least one of the plurality of first disks or the plurality of second disks. A refiner, wherein a stop member is provided, and at least one of the casing and the runner is provided with a locked member that locks with the locking member. 3. A locking member provided on an outer peripheral surface other than the blade surface of at least one of the plurality of first disks or the plurality of second disks is provided on at least one of the casing or the runner of the rotary shaft. A first step in which the plurality of first disks or the plurality of second disks are positioned in the circumferential direction so as to face each other by engaging with the locked member provided, and the plurality of first disks are thickened from the blade surface. A second step of fixing the plurality of first disks to the casing by a first screw member that penetrates in the depth direction, and the second screw member that penetrates the plurality of second disks in the thickness direction from the blade surface A third step of fixing two disks to the runner, and a disk mounting method for a refiner.