JP7724476B2 - Pulper equipment - Google Patents

Description

The present invention relates to a pulper device, and in particular to a pulper device that aims to improve the disintegration power of papermaking raw materials.

The pulper device has a papermaking raw material inlet at the top and a discharge outlet at the bottom, and is equipped with a tank that receives papermaking raw materials and water, a strainer that covers the discharge outlet of the tank, and a rotor that is installed within the tank and has blades that disintegrate the papermaking raw materials. The rotor and strainer are arranged within the tank, and the rotor is positioned above the strainer (see patent document).

Utility Model Registration No. 3211898

However, the above-mentioned pulper device had a problem in that the blade angle was about 30 degrees, which meant that the clearance angle was large and the force exerted when the papermaking raw material came into contact with the rotor blades was weak in disintegrating the papermaking raw material.

The present invention was made in consideration of the problems of the conventional technology mentioned above, and its purpose is to provide a pulper device that improves the disintegration power of papermaking raw materials.

The pulper device according to claim 1 comprises a tank having a papermaking raw material inlet at an upper part and a discharge outlet at a lower part, for receiving papermaking raw material and water, a strainer provided so as to cover the discharge outlet of the tank, and a rotor provided in the tank and having blades for macerating the papermaking raw material, the blades being attached to the outer periphery of the rotor, and the angle of the blades being in the range of +15 degrees to -15 degrees ... The + sign is the angle between the attachment point and the line connecting the tip of the leading edge of the blade and the center of the rotor, and the + sign is the direction moving away from the line connecting the tip of the leading edge of the blade and the center of the rotor in the opposite direction to the rotation direction of the rotor, and the - sign is the direction moving away from the line connecting the tip of the leading edge of the blade and the center of the rotor in the rotation direction of the rotor.The rotor is equipped with a cover body that covers the tip of the rotor's rotation shaft and has a plurality of auxiliary blades extending outward from the center of the cover body, and these multiple auxiliary blades are erected from the flat surface of the cover body .

The pulper device according to claim 2 comprises a tank having a papermaking raw material inlet at an upper part and a discharge outlet at a lower part, for receiving papermaking raw material and water, a strainer provided to cover the discharge outlet of the tank, and a rotor provided in the tank and having blades for macerating the papermaking raw material, wherein the blades are attached to the outer periphery of the rotor, and the angle of the blades is in the range of +15 degrees to -15 degrees, and the angle of the blades is an angle formed by a line connecting the tip of the leading edge of the blade to the center of the rotor and a line connecting the tip of the leading edge of the blade to a mounting position of the rotor, and the + is a direction away from the line connecting the tip of the leading edge of the blade to the center of the rotor in a direction opposite to the rotation direction of the rotor. , the - indicates a direction away from a line connecting the tip of the leading edge of the blade and the center of the rotor in the rotation direction of the rotor, the rotor having the blades is provided with a doughnut-shaped disk body, a cover body covering the tip of the rotation shaft of the rotor is located on the inner periphery of this doughnut-shaped disk body, in a plan view, the difference between the radius of the outer periphery of the doughnut-shaped disk body and the radius of the inner periphery of the doughnut-shaped disk body is larger than the radius of the cover body, a plurality of auxiliary blades are erected from the flat surface of the doughnut-shaped disk body, and each of the plurality of auxiliary blades is on the flat surface of the doughnut-shaped disk body, extending from near the inner peripheral edge of the doughnut-shaped disk body to near the outer peripheral edge of the doughnut-shaped disk body .

The pulper device according to claim 3 comprises a tank having a papermaking raw material inlet at an upper part and a discharge outlet at a lower part, for receiving papermaking raw material and water, a strainer provided to cover the discharge outlet of the tank, a rotor provided in the tank and having blades for macerating the papermaking raw material, a cover body covering the tip of the rotor's rotating shaft, a cover covering the outer periphery of the cover body, a flat surface of the rotor having the blades, and a plurality of auxiliary blades connected to the cover, the blades are attached to the outer periphery of the rotor, and the angle of the blades is in the range of +15 degrees to -15 degrees, and the angle of the blades is , the angle formed by the line connecting the tip of the leading edge of the blade to the center of the rotor and the line connecting the tip of the leading edge of the blade to the attachment point of the rotor, the + sign indicating the direction away from the line connecting the tip of the leading edge of the blade to the center of the rotor in the opposite direction to the rotation direction of the rotor, and the - sign indicating the direction away from the line connecting the tip of the leading edge of the blade to the center of the rotor in the rotation direction of the rotor, the multiple auxiliary blades are connected to the flat surface of the rotor having the blades and the cover covering, and the multiple auxiliary blades are erected from the flat surface of the rotor .

The pulper device described in claim 4 comprises a tank having a papermaking raw material inlet at the top and a discharge outlet at the bottom, for receiving papermaking raw material and water, a strainer provided to cover the discharge outlet of the tank, and a rotor provided in the tank and having blades for macerating the papermaking raw material, the rotor having a cover body covering the tip of the rotor's rotation shaft and a plurality of auxiliary blades extending outward from the center of the cover body, the plurality of auxiliary blades being erected from the flat surface of the cover body .

A pulper apparatus according to claim 5 comprises a tank having a papermaking raw material inlet at an upper part and a discharge outlet at a lower part for receiving papermaking raw material and water, a strainer provided to cover the discharge outlet of the tank, and a rotor provided in the tank and having blades for macerating the papermaking raw material, wherein a doughnut-shaped disk is provided on the rotor having the blades, and a cover body is located on the inner periphery of the doughnut-shaped disk and covers the tip of the rotor's rotation shaft, and in plan view, the difference between the radius of the outer periphery of the doughnut-shaped disk and the radius of the inner periphery of the doughnut-shaped disk is greater than the radius of the cover body, and a plurality of auxiliary blades are provided upright from the flat surface of the doughnut-shaped disk , and each of the plurality of auxiliary blades is on the flat surface of the doughnut-shaped disk and extends from near the inner peripheral edge of the doughnut-shaped disk to near the outer peripheral edge of the doughnut-shaped disk .

The pulper device described in claim 6 comprises a tank having a papermaking raw material inlet at the top and a discharge outlet at the bottom, for receiving papermaking raw material and water, a strainer provided to cover the discharge outlet of the tank, a rotor provided in the tank and having blades for macerating the papermaking raw material, a cover body covering the tip of the rotor's rotating shaft, a cover body covering the outer periphery of the cover body, a flat surface of the rotor having the blades, and a plurality of auxiliary blades connected to the cover body, the plurality of auxiliary blades being connected to the flat surface of the rotor having the blades and the cover body, and the plurality of auxiliary blades standing upright from the flat surface of the rotor .

According to the pulper device described in claim 1, the blade angle is set within the range of +15 degrees to -15 degrees, so compared to the conventional blade angle of 30 degrees, the blade acts in a direction toward the papermaking raw material, improving the papermaking raw material disintegration force.

Furthermore, according to the pulper device of claim 4 , the rotor is provided with a cover body that covers the tip of the rotor's rotating shaft, and has a plurality of auxiliary blades extending outward from the center of the cover body, and these auxiliary blades are erected from the flat surface of the cover body, that is, the plurality of auxiliary blades extend outward from the center of the cover body, and moreover, since these auxiliary blades are erected from the flat surface of the cover body, the plurality of auxiliary blades can improve the disintegration force of the papermaking raw materials.

According to a pulper device of claim 5 , a doughnut-shaped disk is provided on a rotor having blades , a cover body is positioned on the inner periphery of this doughnut-shaped disk to cover the tip of the rotor's rotation shaft, the difference between the radial dimension of the outer periphery of the doughnut-shaped disk and the radial dimension of the inner periphery of the doughnut-shaped disk is greater than the radial dimension of the cover body in a plan view, and a plurality of auxiliary blades are erected from the flat surface of the doughnut-shaped disk, and each of the plurality of auxiliary blades is on the flat surface of the doughnut-shaped disk and extends from near the inner peripheral edge of the doughnut-shaped disk to near the outer peripheral edge of the doughnut-shaped disk, thereby improving the disintegration force of the papermaking raw material.

In addition, according to the pulper device described in claim 6 , it is provided with a cover body that covers the tip of the rotor 's rotating shaft, a cover covering body that covers the outer periphery of this cover body, and a plurality of auxiliary blades connected to the cover covering body and to the flat surface of the rotor having blades, and the plurality of auxiliary blades are connected to the cover covering body and the flat surface of the rotor having blades, and the plurality of auxiliary blades are erected from the flat surface of the rotor, thereby improving the disintegration force of the papermaking raw materials.

FIG. 1 is a schematic diagram of a pulper device according to one embodiment of the present invention. FIG. 2 is a schematic plan view of the rotor of FIG. FIG. 3 is a schematic front view of FIG. FIG. 4 is a schematic partially enlarged view showing a part of FIG. 3 . FIG. 5 is a schematic perspective view of the rotor of FIG. FIG. 6 is a schematic exploded perspective view showing the rotor of FIG. 5 in an exploded state. 7(a) is an explanatory diagram for explaining the rotor of FIG. 2, FIG. 7(b) is an explanatory diagram for explaining the position where the blade angle is +15 degrees, and FIG. 7(c) is an explanatory diagram for explaining the position where the blade angle is -15 degrees. FIG. 8 is a schematic perspective view of a rotor according to another embodiment different from the rotors shown in FIGS. FIG. 9 is a schematic plan view of a rotor according to another embodiment different from the rotor shown in FIG. FIG. 10 is a schematic front view of FIG. FIG. 11 is a schematic perspective view of the rotor of FIG. FIG. 12 is a schematic exploded perspective view showing the rotor of FIG. 11 in an exploded state. FIG. 13 is a schematic plan view of a rotor according to another embodiment different from the rotors shown in FIGS. FIG. 14 is a schematic front view of FIG. FIG. 15 is a schematic perspective view of the rotor of FIG. FIG. 16 is a schematic exploded perspective view showing the rotor of FIG. 15 in an exploded state.

A pulper device according to one embodiment of the present invention will be described with reference to FIGS.
In FIG. 1, P denotes a pulper device in which papermaking raw materials (not shown) such as pulp and waste paper are put into a tank (tub) 1 and disintegrated in water.
The pulper device P has a papermaking raw material inlet 1a at the top and a discharge outlet (not shown) at the bottom, and has a tank 1 for receiving papermaking raw material (not shown) and water.

In FIG. 1, reference numeral 2 denotes a strainer provided to cover the outlet (not shown) of the tank 1, and reference numeral 3 denotes a rotor provided in the tank 1 and having blades 3a for disintegrating the papermaking raw material.
As shown in FIG. 1, a rotor 3 and a strainer 2 are disposed in a vessel 1, and the rotor 3 is positioned above the strainer 2.
The arrows shown in FIG. 1 indicate the flow of papermaking raw material (not shown) caused by blades 3a of rotor 3 in tank 1 and a plurality of auxiliary blades (scraper blades) 3e (described later).

As shown in FIG. 7(a), the blades 3a are attached to the outer periphery of the rotor 3, and in FIG. 7(a), the angle of the blades 3a is approximately 0 degrees.
Therefore, compared to the conventional blade angle of 30 degrees, the blade 3a acts more strongly in the direction toward the papermaking raw material, thereby further improving the disintegration force of the papermaking raw material.

The angle of the blades 3a is preferably approximately 0 degrees as shown in FIG. 7(a), but the angle of the blades 3a may be in the range of +15 degrees (FIG. 7(b)) to -15 degrees (FIG. 7(c)).
That is, the angle of the blade 3 a is the angle formed by a line OX connecting the tip Y of the leading edge 3 b of the blade 3 a to the center O of the rotor 3 and a line OY connecting the tip Y of the leading edge 3 b of the blade 3 a to the attachment portion 3 c of the rotor 3 of the leading edge 3 b of the blade 3 a, and the + sign is the direction (e.g., clockwise) that moves away from the line OX connecting the tip Y of the leading edge 3 b of the blade 3 a to the center O of the rotor 3 in the direction opposite to the rotation direction Z of the rotor 3 (e.g., counterclockwise),
The "-" sign indicates a direction (e.g., counterclockwise) away from a line OX connecting the tip Y of the rotor 3 at the leading edge 3b of the blade 3a and the center O of the rotor 3 in the rotation direction Z (e.g., counterclockwise) of the rotor 3. Note that Z in FIG. 7(a) indicates the rotation direction of the rotor 3.
In this way, because the angle of the blades 3a is set in the range of +15 degrees [Fig. 7(b)] to -15 degrees [Fig. 7(c)], the blades 3a act in a direction toward the papermaking raw material, improving the maceration force of the papermaking raw material compared to the conventional blade angle of 30 degrees. In other words, by setting the angle of the blades 3a in the range of +15 degrees to -15 degrees and reducing the relief angle compared to the conventional blade angle of 30 degrees, the maceration force, which is the force when the papermaking raw material comes into contact with the blades 3a of the rotor 3, can be improved.

As shown in FIG. 7A, the outer arc length 3X of the blade 3a on the side farther from the attachment site of the rotor 3 is longer than the inner arc length 3Y of the attachment site of the rotor 3 of the blade 3a (3X>3Y).
Increasing the blade area affects the disintegration of the papermaking raw material between the back surface of the blade 3a and the strainer 2, so by increasing the blade area, the disintegration force of the papermaking raw material can be improved.

2 to 6, the rotor 3 is provided with a cover body 3d that covers the tip of the rotary shaft 4 of the rotor 3, and has a plurality of auxiliary blades (scraper blades) 3e extending from the center of the cover body 3d outward, and these auxiliary blades (scraper blades) 3e are erected from a flat surface 3f of the cover body 3d. 5 shown in Fig. 4 is a replacement blade, and 5' is a layer formed by Stellite build-up on the underside of the replacement blade 5, and this layer 5' is preferably a thermal sprayed layer formed by WC thermal spraying instead of Stellite build-up.
In this way, the multiple auxiliary blades (scraping blades) 3e extend from the center of the cover body 3d outward, and since these multiple auxiliary blades (scraping blades) 3e are erected from the flat surface 3f of the cover body 3d, the multiple auxiliary blades (scraping blades) 3e can improve the disintegration power of the papermaking raw materials.
In other words, the centrifugal force of the multiple radially arranged auxiliary blades (raking blades) 3e creates a flow from the inside to the outside, and the papermaking raw material forms a swirling upward flow along the inner wall of the tank 1, as shown by the arrows in Figure 1, combining with the rotating flow caused by the blades 3a of the rotor 3. As a result, a flow is formed in a direction from the upper center of the tank 1 to the lower part, and the papermaking raw material is swallowed up, creating strong agitation and a circulating flow.
Although the plurality of supporting blades (scraper blades) 3e have the same configuration, as shown in FIG. 8, some of the supporting blades (scraper blades) 3e' may be different.

Furthermore, the rotor 3 is not limited to the rotor 3 shown in FIGS. 2 to 6, but may be the rotor 3 shown in FIGS.
That is, a donut-shaped disk body 3g is provided on a rotor 3 having blades 3a,
A cover body 4a that covers the tip of the rotating shaft 4 of the rotor 3 is located on the inner circumference of this donut-shaped disk body 3g, and in plan view, the difference R between the radial dimension of the outer circumference of the donut-shaped disk body 3g and the radial dimension of the inner circumference of the donut-shaped disk body 3g is larger than the radial dimension r of the cover body 4a.
A plurality of auxiliary blades (scraper blades) 3i are erected from the flat surface 3h of the doughnut-shaped disk body 3g,
As shown in Figure 12, each of the plurality of auxiliary blades (scraping blades) 3i is located on a flat surface 3h of the doughnut-shaped disk 3g, and extends from the vicinity of the inner peripheral edge 3j of the doughnut-shaped disk 3g to the vicinity of the outer peripheral edge 3k of the doughnut-shaped disk 3g. The above-mentioned plurality of auxiliary blades (scraping blades) 3i can improve the disintegration force of the papermaking raw material.

The rotor 3 is not limited to the rotor 3 shown in FIGS. 9 to 12, but may be the rotor 3 shown in FIGS.
That is, the rotor 3 comprises a cover body 3l that covers the tip of the rotary shaft 4 of the rotor 3, a cover covering body 3m that covers the outer periphery of the cover body 3l, a flat surface 3p of the rotor 3 having blades 3a, and a plurality of auxiliary blades (scraping blades) 3s connected to the cover covering body 3m, and the plurality of auxiliary blades (scraping blades) 3s are connected to the flat surface 3p of the rotor 3 having blades 3a and the cover covering body 3m, and the plurality of auxiliary blades (scraping blades) 3s stand upright from the flat surface 3p of the rotor 3. The plurality of auxiliary blades (scraping blades) 3s can improve the remaceration force of the papermaking raw material.

P Pulper device 1 Tank 1a Papermaking raw material inlet 2 Strainer 3 Rotor 3X Outer arc length 3Y Inner arc length 3a Blade 3b Front edge 3c Mounting portion (rotor mounting portion at the front edge of the blade)
3d Cover body 3e Auxiliary blade (scraper blade)
3f Flat surface 3g Donut-shaped disc 3h Flat surface 3i Auxiliary blade (oyster blade)
3j Inner edge 3k Outer edge
3l Cover body 3m Cover cover body 3p Flat surface 3s Auxiliary blade (oyster blade)

Claims (6)

a tank having a papermaking raw material inlet at an upper portion and a discharge outlet at a lower portion, for receiving papermaking raw materials and water;
a strainer provided to cover the outlet of the tank;
a rotor provided in the tank and having blades for disintegrating the papermaking raw material;
The blades are attached to the outer periphery of the rotor;
The blade angle is in the range of +15 degrees to −15 degrees;
the blade angle is an angle formed by a line connecting the tip of the leading edge of the blade to the center of the rotor and a line connecting the tip of the leading edge of the blade to an attachment portion of the leading edge of the blade to the rotor,
the + sign indicates a direction away from a line connecting the tip of the leading edge of the blade and the center of the rotor in a direction opposite to the rotation direction of the rotor,
The negative sign (-) indicates a direction away from a line connecting the tip of the leading edge of the blade and the center of the rotor in the rotation direction of the rotor,
The rotor includes a cover body that covers the tip of the rotor shaft, and has a plurality of auxiliary blades extending from the center of the cover body toward the outside, the auxiliary blades standing upright on the flat surface of the cover body.
A pulper device characterized by: a tank having a papermaking raw material inlet at an upper portion and a discharge outlet at a lower portion, for receiving papermaking raw materials and water;
a strainer provided to cover the outlet of the tank;
a rotor provided in the tank and having blades for disintegrating the papermaking raw material;
The blades are attached to the outer periphery of the rotor;
The blade angle is in the range of +15 degrees to −15 degrees;
the blade angle is an angle formed by a line connecting the tip of the leading edge of the blade to the center of the rotor and a line connecting the tip of the leading edge of the blade to an attachment portion of the leading edge of the blade to the rotor,
the + sign indicates a direction away from a line connecting the tip of the leading edge of the blade and the center of the rotor in a direction opposite to the rotation direction of the rotor,
The negative sign (-) indicates a direction away from a line connecting the tip of the leading edge of the blade and the center of the rotor in the rotation direction of the rotor,
The rotor having the blades is provided with a donut-shaped disk,
a cover body that covers the tip of the rotor shaft is located on the inner periphery of the donut-shaped disk body;
a difference between a radial dimension of an outer periphery of the doughnut-shaped disk body and a radial dimension of an inner periphery of the doughnut-shaped disk body is larger than a radial dimension of the cover body in a plan view;
A plurality of auxiliary blades are erected from the flat surface of the donut-shaped disk body,
A pulper device characterized in that each of the plurality of auxiliary blades is on the flat surface of the donut-shaped disk body, extending from near the inner edge of the donut-shaped disk body to near the outer edge of the donut-shaped disk body . a tank having a papermaking raw material inlet at an upper portion and a discharge outlet at a lower portion, for receiving papermaking raw materials and water;
a strainer provided to cover the outlet of the tank;
a rotor provided in the tank and having blades for disintegrating the papermaking raw material;
a cover body that covers the tip of the rotary shaft of the rotor;
a cover covering the outer periphery of the cover;
a flat surface of the rotor having the blades;
a plurality of auxiliary blades connected to the cover;
The blades are attached to the outer periphery of the rotor;
The blade angle is in the range of +15 degrees to −15 degrees;
the blade angle is an angle formed by a line connecting the tip of the leading edge of the blade to the center of the rotor and a line connecting the tip of the leading edge of the blade to an attachment portion of the leading edge of the blade to the rotor,
the + sign indicates a direction away from a line connecting the tip of the leading edge of the blade and the center of the rotor in a direction opposite to the rotation direction of the rotor,
The negative sign (-) indicates a direction away from a line connecting the tip of the leading edge of the blade and the center of the rotor in the rotation direction of the rotor,
The plurality of auxiliary blades are connected to the flat surface of the rotor having the blades and the cover housing;
A pulper device characterized in that the plurality of auxiliary blades are erected from the flat surface of the rotor . a tank having a papermaking raw material inlet at an upper portion and a discharge outlet at a lower portion, for receiving papermaking raw materials and water;
a strainer provided to cover the outlet of the tank;
a rotor provided in the tank and having blades for macerating the papermaking raw material, the rotor having a cover body covering the tip of the rotor's rotation shaft, and a plurality of auxiliary blades extending outward from the center of the cover body, the plurality of auxiliary blades being erected from the flat surface of the cover body . a tank having a papermaking raw material inlet at an upper portion and a discharge outlet at a lower portion, for receiving papermaking raw materials and water;
a strainer provided to cover the outlet of the tank;
a rotor provided in the tank and having blades for disintegrating the papermaking raw material;
The rotor having the blades is provided with a donut-shaped disk,
a cover body that covers the tip of the rotor shaft is located on the inner periphery of the donut-shaped disk body ;
a difference between a radial dimension of an outer periphery of the doughnut-shaped disk body and a radial dimension of an inner periphery of the doughnut-shaped disk body is larger than a radial dimension of the cover body in a plan view;
A plurality of auxiliary blades are erected from the flat surface of the donut-shaped disk body,
Each of the plurality of support blades is on the flat surface of the doughnut-shaped disk, and extends from the vicinity of the inner peripheral edge of the doughnut-shaped disk to the vicinity of the outer peripheral edge of the doughnut-shaped disk.
A pulper device characterized by: a tank having a papermaking raw material inlet at an upper portion and a discharge outlet at a lower portion, for receiving papermaking raw materials and water;
a strainer provided to cover the outlet of the tank;
a rotor provided in the tank and having blades for disintegrating the papermaking raw material;
a cover body that covers the tip of the rotary shaft of the rotor;
a cover covering the outer periphery of the cover;
a flat surface of the rotor having the blades;
a plurality of auxiliary blades connected to the cover;
The plurality of auxiliary blades are connected to the flat surface of the rotor having the blades and the cover housing;
A pulper device characterized in that the plurality of auxiliary blades are erected from the flat surface of the rotor .