JP7464828B2 - Rotating device - Google Patents

Description

The present invention relates to a rotating device, and more particularly to a rotating device having a rotating mechanism using a dual shaft.

Conventionally, an extrusion granulator is known as a rotating device having a rotating mechanism using a double shaft (see, for example, Patent Document 1). The rotating device (extrusion granulator) described in Patent Document 1 has an extrusion blade at the upper end of the outer drive shaft of the double shaft, and a pressure blade at the upper end of the inner drive shaft. The kneaded material fed into a cylindrical hopper is pressurized by the pressure blade, guided to a screen via the extrusion blade and granulated, and the granulated material is received on a rotating table.

JP 2004-188357 A

The rotating device described in the above patent document has a granulation section equipped with a hopper, a screen, a pressure blade, and an extrusion blade on the upper side, and a drive section for rotating the pressure blade and the extrusion blade via a double shaft on the lower side. The drive section employs a configuration in which the rotational force transmitted from the output shaft of the motor is separated inside a gear box to rotate the inner drive shaft and the outer drive shaft of the double shaft. In this case, the gear box configuration is complicated, which causes labor and costs to be required for manufacturing and maintenance of the extrusion granulator.

On the other hand, a rotating device is known that has two motors that drive an inner drive shaft and an outer drive shaft, respectively. In this case, a flat first base member is suspended from the structure, and a flat second base member is suspended from the first base member, with a motor provided on each base member.

However, when configured as described above, the number of parts required to connect the structure and the two motors increases, and delicate adjustments are required to align (center) the center of the dual shaft with the center of each motor. In addition, when repairing or maintaining the rotating device, on-site work becomes cumbersome.

The present invention has been made in consideration of the above circumstances, and the problem that the present invention aims to solve is to provide a rotating device that can simplify the configuration by reducing the number of parts when connecting a structure and two motors, and that can easily align (center) the center of the dual shaft with the center of each motor, and can be easily disassembled and assembled, thereby simplifying the work involved in repairs, maintenance, etc.

Below, we explain the means to solve the above problems.

The rotation device according to the present invention includes a flat plate-like structure arranged horizontally, a double shaft including an inner shaft and a hollow outer shaft that houses the inner shaft inside and is arranged to penetrate the flat plate-like structure in the up-down direction, a case member that is positioned relative to the flat plate-like structure and rotatably supports the double shaft, a first rotor that is arranged above the flat plate-like structure and connected to the outer shaft, a second rotor that is arranged above the flat plate-like structure and connected to the inner shaft, a first motor that is arranged below the flat plate-like structure and drives the outer shaft to rotate, and A rotating device comprising: a second motor connected to the underside of the first motor to rotate the inner shaft; and a second motor connected to the underside of the first motor to rotate the inner shaft, wherein the first motor is provided with a first output shaft connected to the outer shaft and an upper mounting portion connectable to the flat plate -like structure, and a recess is formed on one of the lower surface of the flat plate-like structure or the upper surface of the upper mounting portion, and a convex portion is formed on the other, and when the upper mounting portion is connected to the flat plate-like structure, the convex portion is inserted into the recess, thereby positioning the outer shaft and the first output shaft so that their axis coincides .

Furthermore, in the rotating device, it is preferable that the first motor is provided with a lower mounting portion, the second motor is provided with a second output shaft connected to the inner shaft and a second mounting portion connectable to the lower mounting portion, a second recess is formed on either the lower surface of the lower mounting portion or the upper surface of the second mounting portion, and a second convex portion is formed on the other, and when the second mounting portion is connected to the lower mounting portion, the second convex portion is inserted into the second recess, thereby positioning the inner shaft and the second output shaft so that their axis coincides .

The rotating device preferably includes a cylindrical screen provided on the upper side of the case member, a cylindrical hopper provided on the upper side of the screen, an extrusion blade provided as the first rotating body at the upper end of the outer shaft, and a pressure blade provided as the second rotating body at the upper end of the inner shaft, and granulation is performed by pressing the kneaded material fed into the hopper against the screen with the extrusion blade while applying downward pressure with the pressure blade.

In addition, in the rotating device, the hopper is detachably mounted above the screen, the inner diameter of the hopper is smaller than the inner diameter of the screen, and the hopper is connected to the screen via a pressure plate, the pressure plate has a communication hole that connects the inside of the screen with the inside of the hopper, the lower part of the communication hole is formed to be the same size as the inner diameter of the screen, the upper part of the communication hole is formed to be the same size as the inner diameter of the hopper, and the communication hole is preferably formed to be smaller in diameter toward the upper side.

In addition, in the rotating device, the pressurizing blade includes a blade support part that is connected to the upper end of the inner shaft and extends radially outward from the inner shaft, and a blade tip part that is provided at the outer tip part of the blade support part, and it is preferable that the blade tip part is detachable from the blade support part and that its position relative to the blade support part is changeable.

In addition, in the rotating device, it is preferable that the blade support portion is formed in a plate shape and is disposed at an angle so that the rear side in the direction of rotation is lower than the front side in the direction of rotation.

The rotating device of the present invention can simplify the configuration by reducing the number of parts when connecting the structure and two motors, and can easily align (center) the center of the dual shaft with the center of each motor, allowing for easy disassembly and assembly, simplifying the work involved in repairs, maintenance, etc.

FIG. 2 is a top perspective view showing a rotation device according to an embodiment; FIG. 2 is a bottom perspective view showing a rotation device according to an embodiment. FIG. 1 is a cross-sectional view showing a rotation device according to an embodiment. FIG. 3 is a cross-sectional view showing an assembly configuration of a motor and the like. FIG. 4 is a cross-sectional view showing the configuration of a pressurizing blade and a pushing blade. 6A is a perspective view showing the configuration of an extrusion blade, and FIG. 6B and FIG. 6C are perspective views showing the shape of an extrusion blade according to another embodiment. 10A is a perspective view showing the configuration of a pressurizing blade, and FIG. 10B is a cross-sectional view showing the configuration of a pressurizing blade and a hopper according to a modified example. FIG. 11 is a side view showing the configuration of a pressurizing blade according to another embodiment. 13A to 13D are diagrams showing modified examples of the method of attaching the pressurizing blade according to another embodiment. 13A and 13B are a front view and a side view showing a state in which a scraping blade is attached to a pressurizing blade according to another embodiment.

[Extrusion Granulator 1]
First, the schematic configuration of an extrusion granulator (hereinafter, simply referred to as "granulator") 1, which is one embodiment of the rotating device according to the present invention, will be described with reference to Figures 1 to 4. The rotating device according to the present invention is not only applicable to granulators, but can be applied to all rotating devices using a double shaft. The granulator 1 according to this embodiment has a granulation unit 2 provided on the top surface of a housing 11, a drive unit 4 provided inside the housing 11, and the granulation unit 2 and the drive unit 4 connected via a double shaft 3.

In the granulator 1, a kneaded material kneaded in a kneader (not shown) is fed from an upper hopper 21 formed in the granulation section 2, and the driving force of the drive section 4 is transmitted to the granulation section 2 via the double shaft 3, whereby the kneaded material is granulated into granules in the granulation section 2. The granules granulated in the granulation section 2 are discharged to the outside through the discharge chute 15 of the granulation section 2.

The housing 11 is a structural member that constitutes the granulator 1. Wheels 12 are provided at the four corners of the underside of the housing 11. An opening is formed on the top surface of the housing 11, and one side of this opening (the right side in FIG. 3) is closed by a cover 11a. A base plate 13, which is a rectangular plate-shaped member that supports the granulator 2 and the drive unit 4, is horizontally provided on the other side (the left side in FIG. 3) of the opening of the housing 11.

The base plate 13 is one embodiment of the flat plate structure of the present invention. Ring-shaped hooked portions 13a are fixed to the four corners of the top surface of the base plate 13. When performing maintenance or replacement of the drive unit 4, the granulation unit 2 and cover 11a are removed, and the hooked portion 13a is engaged with a hook member such as a lift machine (not shown) and lifted up. When the hooked portion 13a is lifted, the drive unit 4 connected to the base plate 13 also lifts up, making it easy to maintain or replace the drive unit 4.

[Granulation section 2]
The granulating unit 2 is provided above the base plate 13. The granulating unit 2 is configured to include a table cover 14, a discharge chute 15, an upper hopper 21, a lower hopper 22, a screen guide 23, a screen 23a, a turntable 24, a case member 25, an extrusion blade 33, and a pressurizing blade 34. Each component will be described in order below.

A case member 25, which is a bearing case, is fixed to the center of the base plate 13. Specifically, as shown in FIG. 4, an insertion hole 13b is formed in the base plate 13, penetrating the base plate 13 in the thickness direction (vertical direction), and an insertion portion 25a of the case member 25 is fitted into the insertion hole 13b. In this way, the case member 25 is positioned relative to the base plate 13.

The screen guide 23 is connected to the upper surface of the case member 25 via a circular ring-shaped base collar 26 and a disk-shaped base plate 27. A cylindrical screen 23a is provided between the outer peripheral surface of the base plate 27 and the inner peripheral surface of the screen guide 23. The screen 23a has a large number of holes that connect the inside and outside. Inside the screen 23a, a rotatable extrusion blade 33, which is the first rotating body in the present invention, is provided. As the extrusion blade 33 rotates, the kneaded material is pressed against the screen 23a and granulated. In the granulator 1, the particle size of the granulated material can be adjusted by changing the specifications of the screen 23a (plate thickness and hole diameter).

A cylindrical lower hopper 22 with the same inner diameter as the screen 23a is removably attached to the upper surface of the screen guide 23 (above the screen 23a). As shown in FIG. 5, a gasket 28, which is a circular member, is inserted between the screen guide 23 and the lower hopper 22.

A pressure blade 34, which is the second rotating body in the present invention, is rotatably provided inside the lower hopper 22. When the pressure blade 34 rotates, the kneaded material is pressurized downward, which is the side where the extrusion blade 33 is provided. The upper hopper 21 is attached to the upper side of the lower hopper 22. The upper part of the upper hopper 21 is formed in a shape that expands in diameter toward the upper side, and a lattice member 21a is placed on its upper end. The kneaded material is fed into the granulation section 2 through the upper hopper 21 and the lower hopper 22. It is also possible to form the upper hopper 21 and the lower hopper 22 integrally, or to form the upper hopper 21, the lower hopper 22, the screen guide 23, and the screen 23a integrally.

The lower hopper 22 does not necessarily have to have the same inner diameter as the screen 23a, and may be smaller than the screen 23a. It is also possible to remove the lower hopper 22 and attach the upper hopper 21 directly to the screen 23a via the screen guide 23.

In addition, to prevent the kneaded material pushed upward by the pressure blade 34 from rising upward, a rise prevention part can be provided above the pressure blade 34 on the inner peripheral surface of the lower hopper 22. The rise prevention part can be formed by providing a ring-shaped member with a smaller diameter than the lower hopper 22 on the inner peripheral surface of the lower hopper 22, for example.

The table cover 14 is a cylindrical member that is provided on the upper surface of the base plate 13 so as to surround the periphery of the case member 25. Inside the table cover 14, a circular ring-shaped turntable 24 is provided above the case member 25. A small gap is provided between the inner periphery of the turntable 24 and the outer periphery of the base collar 26.

A table gear 24a is attached to the underside of the turntable 24, and the table gear 24a is connected to a table motor 16 fixed to the underside of the base plate 13 by a connecting shaft (not shown) or the like. When the table motor 16 is driven, the turntable 24 rotates inside the table cover 14 along the outer circumferential surface of the base collar 26. Inside the table cover 14, a leak-proof gasket 14a is disposed on the outside of the turntable 24.

The granulated material generated through the screen 23a falls onto the upper surface of the turntable 24. A discharge chute 15 is provided at the end of the table cover 14 (the left end in FIG. 3). A guide plate 15a is fixed to the upper side of the turntable 24 in a position perpendicular to the turntable 24. The granulated material that falls onto the upper surface of the turntable 24 is guided by the guide plate 15a as the turntable 24 rotates, and is discharged from the discharge chute 15.

[Drive unit 4]
A drive unit 4 is provided below the base plate 13. The drive unit 4 is configured by connecting a first motor 41 and a second motor 42 with a disk-shaped adapter 43. The connection structure of the drive unit 4 will be described below with reference to FIG.

The first motor 41 is attached to the underside of the base plate 13. The first motor 41 has a reducer equipped with a first hollow gear 41e inside. An upper flange 41a, which is the upper mounting part, and a lower flange 41b, which is the lower mounting part, are fixed to the top and bottom sides of the first motor 41. The upper flange 41a is attached to the base plate 13 with fixing members such as bolts and nuts, thereby fixing the first motor 41 to the base plate 13.

The second motor 42 is attached to the lower side of the first motor 41 via an adapter 43. A reducer equipped with a second hollow gear 42c is provided inside the second motor 42. A second flange 42a, which is a second mounting portion, is fixed to the second motor 42. The second flange 42a is then attached to the lower flange 41b of the first motor 41 via the adapter 43, thereby connecting the second motor 42 to the first motor 41.

[Dual Axis 3]
In the granulator 1, the granulating unit 2 and the driving unit 4 are connected via a double shaft 3. As shown in Fig. 4, the double shaft 3 includes an inner shaft 31 and a hollow outer shaft 32 that houses the inner shaft 31 inside. The outer shaft 32 is formed to have a shorter length in the vertical direction than the inner shaft 31. Therefore, the upper and lower ends of the outer shaft 32 are located in the middle of the inner shaft 31 in the vertical direction.

The double shaft 3 is rotatably supported by the case member 25 via bearings, and is provided to penetrate the base plate 13 in the vertical direction. Inside the case member 25, a seal plate 38 is provided on the outer circumferential surface of the outer shaft 32, covering the upper side of the bearing.

As shown in FIG. 4, the outer shaft lower end 32a formed at the lower end of the outer shaft 32 is connected to a first hollow gear 41e in the first motor 41. On the other hand, the outer shaft upper end 32b formed at the upper end of the outer shaft 32 is connected to the extrusion blade 33, which is a first rotating body. This makes it possible to transmit the driving force of the first motor 41 to the extrusion blade 33 via the outer shaft 32. In other words, the first motor 41 rotates and drives the extrusion blade 33 via the outer shaft 32.

A conical collar 35 through which the inner shaft 31 is inserted is provided above the upper end 32b of the outer shaft 32. A cylindrical collar member 36 through which the inner shaft 31 is inserted is provided above the conical collar 35.

As shown in FIG. 4, the inner shaft lower end 31a formed at the lower end of the inner shaft 31 is connected to a second hollow gear 42c in the second motor 42. On the other hand, the inner shaft upper end 31b formed at the upper end of the inner shaft 31 is connected to the pressure blade 34, which is a second rotating body. This allows the driving force of the second motor 42 to be transmitted to the pressure blade 34 via the inner shaft 31. In other words, the second motor 42 drives the pressure blade 34 to rotate via the inner shaft 31. An end cap 37 is placed over the inner shaft upper end 31b of the inner shaft 31.

In the granulator 1 configured as described above, when the kneaded material is fed into the upper hopper 21 of the granulation section 2, the second motor 42 rotates and drives the pressure blade 34 to pressurize the kneaded material downward. Then, the first motor 41 rotates and drives the extrusion blade 33 to push the kneaded material through the holes in the screen 23a, thereby generating granulated material. The generated granulated material falls onto the upper surface of the rotating turntable 24, and is guided by the guide plate 15a and discharged from the discharge chute 15.

In the granulator 1 according to this embodiment, a control device (not shown) is provided on the outside of the housing 11 to control the driving of the granulator 1 (specifically, the driving of the first motor 41, the second motor 42, and the table motor 16). Each motor in the granulator 1 is electrically connected to the control device, and the rotational driving of each motor is controlled by receiving a command signal from the control device.

[Positioning Means]
In the granulator 1 of this embodiment, the base plate 13 and the upper flange 41a of the first motor 41 are provided with positioning means that can position the outer shaft 32 and the first hollow gear 41e of the first motor 41 so that they coincide with each other when connected to each other.

Specifically, as shown in FIG. 4, a flange mounting portion 13c, which is a circular recess, is formed on the lower surface of the base plate 13 as one of the positioning means. On the other hand, an upper insertion portion 41c, which is a circular protrusion, is formed on the upper surface of the upper flange 41a as the other of the positioning means. The inner diameter of the flange mounting portion 13c and the outer diameter of the upper insertion portion 41c are formed to be approximately the same, and the first motor 41 is positioned relative to the base plate 13 by inserting the upper insertion portion 41c into the flange mounting portion 13c. In this embodiment, the case member 25 is positioned relative to the base plate 13. Therefore, with the above configuration, the axis of the outer shaft 32 and the axis of the first hollow gear 41e in the first motor 41 coincide with each other.

In addition, in the granulator 1 according to this embodiment, the lower flange 41b of the first motor 41 and the second flange 42a of the second motor 42 can be positioned so that the axis of the inner shaft 31 coincides with the axis of the second hollow gear 42c of the second motor 42 when they are connected to each other.

Specifically, as shown in FIG. 4, a lower insertion portion 41d, which is a circular protrusion, is formed on the underside of the lower flange 41b as a second positioning means. Meanwhile, a second insertion portion 42b, which is a circular protrusion, is formed on the upper surface of the second flange 42a as a second positioning means. In addition, a circular recessed inserted portion 43a is formed on the upper surface of the adapter 43, which is one of the second positioning means, and a circular through hole 43b is opened in the center.

The lower insertion portion 41d is inserted into the inserted portion 43a, and the second insertion portion 42b is inserted into the through hole 43b, so that the second motor 42 is positioned relative to the base plate 13 via the adapter 43 and the first motor 41. This causes the axis of the inner shaft 31 to coincide with the axis of the second hollow gear 42c in the second motor 42.

As described above, in the granulator 1 according to this embodiment, when connecting the base plate 13, which is a flat structure, to the two motors 41 and 42, there is no need to suspend each base member from the base plate 13 to support each of the motors 41 and 42, so the number of parts required to connect the motors 41 and 42 can be reduced. In other words, in this embodiment, the connection configuration of the motors 41 and 42 to the base plate 13 can be simplified.

In addition, in the granulator 1, the base plate 13 and the upper flange 41a, and the lower flange 41b and the second flange 42a can be positioned, so that the center of the double shaft 3 (the shaft centers of the inner shaft 31 and the outer shaft 32) can be easily aligned (centered) with the shaft centers of the motors 41 and 42.

In this way, in the granulator 1 according to this embodiment, the connection configuration between the base plate 13, which is a flat structure, and the two motors 41 and 42 is simplified, and the center of the double shaft 3 is easily aligned with the center of each of the motors 41 and 42, making it possible to simplify on-site work when repairing or maintaining the granulator 1. In other words, the base plate 13 and the two motors 41 and 42 can be removed from the housing 11, making disassembly extremely easy. In particular, in a rotating device such as the granulator 1, which is difficult to transport to another location for repair or maintenance, a configuration that simplifies the connection configuration between the flat structure and the two motors as in this embodiment is suitable.

In this embodiment, a mechanism (positioning means) for positioning each of the first motor 41 and the second motor 42 is used, but it is also possible to adopt a configuration in which this positioning mechanism is adopted for only one of the motors. Furthermore, the configuration of the positioning mechanism adopted for these is not limited to this embodiment, and other configurations can also be adopted.

For example, it is possible to position the base plate 13 and the upper flange 41a by inserting an adapter between them. It is also possible to position the lower flange 41b and the second flange 42a by directly connecting them without inserting an adapter between them. It is also possible to reverse the relationship of the recesses and protrusions of the members to be connected to each other. The shapes of the recesses and protrusions are not limited to being circular, and can be other shapes as long as they allow for positioning relative to each other.

[Extrusion blade 33, pressure blade 34]
Next, the specific configuration of the granulation unit 2 will be described with reference to Figures 5 to 7, focusing on the extrusion blade 33 and the pressurizing blade 34. As shown in Figures 5 and 6(a), the extrusion blade 33 is configured by combining an extrusion arm portion 61 and four extrusion portions 62. The extrusion arm portion 61 is assembled to the outer shaft upper end portion 32b of the outer shaft 32 so as not to rotate relative to it. As a result, the rotation from the outer shaft 32 is transmitted to the extrusion blade 33, and the extrusion blade 33 is made rotatable inside the screen 23a.

The extrusion arm section 61 has four arms that extend radially outward at 90 degrees each, and an attachment section 61a is formed at the tip of each arm. A plate-shaped extrusion section 62 is fixed to the attachment section 61a with a fixing member such as a screw. In the granulator 1, the rotation of the extrusion blade 33 causes the extrusion section 62 to press the kneaded material against the screen 23a to perform granulation. Note that the number of extrusion sections 62 on the extrusion blade 33 is not limited, and it is possible to have three or less or five or more by changing the shape of the extrusion arm section.

In the granulator 1 according to the present embodiment, as shown in FIG. 6(a), the extrusion section 62 is formed in a flat plate shape, but the extrusion section can have other shapes. For example, as shown in FIG. 6(b), the tip 63a can be curved in an arc shape. Also, as shown in FIG. 6(c), the tip 64a can be bent obliquely. As shown in FIG. 6(a), the screw mounting hole drilled in the mounting section 61a can be made into a long hole to adjust the distance from the screen 23a, or conversely, the screw mounting hole drilled in the extrusion section can be made into a long hole to adjust the distance from the screen 23a. In this way, the shape of the extrusion section in the extrusion blade 33 can be changed as appropriate depending on the state of the kneaded material and the shape of the granulated material.

As shown in Figures 5 and 7(a), the pressure blade 34 is configured by combining one blade support part 51, one blade tip part 52, and one scraping blade 53, with two sets being provided at 180 degrees opposite each other. It is also possible to configure the pressure blade 34 without providing the scraping blade 53.

The blade support portion 51 is connected to the upper end portion 31b of the inner shaft 31 so that it cannot rotate relative to the inner shaft 31. This transmits the rotation from the inner shaft 31 to the pressure blade 34, allowing the pressure blade 34 to rotate inside the lower hopper 22.

The blade support portion 51 is a columnar member extending radially outward from the inner shaft 31, and a blade tip portion 52 and a scraping blade 53, each formed into a plate shape, are provided at the outer end of the blade support portion 51. In detail, a long hole 51a is opened along the longitudinal direction (radial direction) of the blade support portion 51, and the blade tip portion 52 and the scraping blade 53 are fixed to this long hole 51a by a fixing member such as a screw.

As shown in FIG. 7(a), the blade tip 52 has an inclined surface that becomes higher in the direction of rotation (clockwise in plan view in this embodiment). In other words, the blade tip 52 is obliquely provided so that the rear side in the direction of rotation is lower than the front side in the direction of rotation. This allows the pressurizing blade 34 to effectively pressurize the kneaded material. In addition, a plate-shaped scraping portion that rises upward is formed at the tip (the radially outer end) of the scraping blade 53.

In this embodiment, the blade tip 52 and the scraping blade 53 are detachable from the blade support part 51. The blade tip 52 and the scraping blade 53 can change their posture relative to the blade support part 51 by changing the mounting position relative to the long hole 51a. Specifically, as shown in FIG. 7(b), the blade tip 52 and the scraping blade 53 can be mounted radially inward of the long hole 51a to adjust the positions of the blade tip 52 and the scraping blade 53 in the pressure blade 34. Also, multiple screw mounting parts may be drilled into the blade support part 51 instead of the long hole 51a.

As shown in FIG. 7(b), when using a small-diameter hopper 122 with a small inner diameter, it is preferable to position the blade tip 52 of the pressure blade 34 and the scraping blade 53 radially inward. It is also possible to replace the blade tip with one that has a different radial and vertical length, inclination angle, etc. In other words, the shape of the blade tip of the pressure blade 34 can be changed as appropriate depending on the state of the kneaded material, etc.

In the granulator 1, as the pressure blade 34 rotates, the blade tip 52 presses the kneaded material downward, and the scraping blade 53 breaks and drops the bridge of kneaded material adhering to the inner peripheral surface of the lower hopper 22. The number of blade tip parts 52 on the pressure blade 34 is not limited, and it is possible to have one or three or more by changing the number of blade support parts.

In the granulator 1, the diameter of the hopper is configured to be changeable. Specifically, as shown in FIG. 7(b), a small diameter hopper 122 whose inner diameter is smaller than the inner diameter of the screen 23a can be connected to the screen guide 23.

In the modified example shown in FIG. 7(b), a pressure plate 128 is inserted between the small diameter hopper 122 and the screen guide 23 instead of the packing 28. The pressure plate 128 has a communication hole 128a that connects the inside of the screen 23a with the inside of the small diameter hopper 122. The pressure plate 128 is formed so that the lower part of the communication hole 128a is the same size as the inner diameter of the screen 23a, and the upper part of the communication hole 128a is the same size as the inner diameter of the small diameter hopper 122. In other words, the communication hole 128a is formed as an inclined surface that decreases in diameter as it goes upward.

In this modified example, as described above, the communicating holes 128a of the pressure plate 128 are formed to be smaller in diameter toward the upper side, so that the volume inside the container formed by the small diameter hopper 122 and the screen 23a can be changed, and the kneading state of the kneaded material by the extrusion blade 33 can be adjusted. In detail, since the upper side of the pressure plate 128 is smaller in diameter, when the extrusion blade 33 presses the kneaded material against the screen 23a, the kneaded material is pressed against the inclined surface of the communicating hole 128a. At this time, the kneaded material receives a reaction force from the inclined surface, and relatively hard granules are obtained. Therefore, by using a pressure plate 128 with a different inclination angle of the communicating hole 128a, the reaction force can be changed, and the kneading state of the kneaded material can be adjusted. Also, if there is no pressure plate 128, there is no reaction force, so relatively soft granules are obtained.

Next, the configuration of the pressurizing blade 134 according to another embodiment will be described with reference to Figures 8 to 10. As shown in Figure 8, the pressurizing blade 134 according to this embodiment is configured by combining a blade support part 151 with a blade tip part 152. As in the previous embodiment, the blade support part 151 is connected to the upper end part of the inner shaft 31 so as not to rotate relative to the inner shaft.

As shown in FIG. 8, the blade support portion 151 is a plate-shaped member that extends radially outward from the inner shaft 31, and is formed in an inclined position with respect to the rotation direction of the pressure blade 134. Also, as shown in FIG. 8 and FIG. 9, the blade tip portion 152 in this embodiment is formed in a rectangular plate shape, and an attachment hole (not shown) is opened at the tip portion.

As a result, the blade tip 152 is positioned so that it becomes higher in the direction of rotation. In other words, the blade tip 152 is positioned at an angle so that the rear side in the direction of rotation is lower than the front side in the direction of rotation. This allows the pressure blade 134 to effectively pressurize the kneaded material.

In the pressurizing blade 134 according to this embodiment, the position of the blade tip 152 relative to the mounting hole of the blade support part 151 can be changed to adjust the gap D (see FIG. 8) formed between the lower end of the blade tip 152 and the upper end of the extrusion part 62 of the extrusion blade 33.

Specifically, as shown in FIG. 9(a), when the first assembly holes 152a of the blade tip portion 152 are used to attach the blade support portion 151, the gap D can be minimized. Also, as shown in FIG. 9(b), when the second assembly holes 152b of the blade tip portion 152 are used to attach the blade support portion 151, the gap D can be made slightly larger than in FIG. 9(a).

Furthermore, as shown in FIG. 9(c), when the blade tip 152 is inverted upside down relative to the blade support 151 and attached using the second assembly holes 152b and 152b, the gap D can be made even larger than in FIG. 9(b). Furthermore, as shown in FIG. 9(d), when the blade tip 152 is inverted upside down relative to the blade support 151 and attached using the first assembly holes 152a and 152a, the gap D can be maximized.

In this way, in the pressurizing blade 134 according to this embodiment, the dimension of the gap D can be increased or decreased by changing the assembly hole of the blade tip portion 152 relative to the blade support portion 151 or by assembling the blade tip portion 152 upside down.

As described above, in the pressurizing blade 134 according to this embodiment, the dimension of the gap D between the extrusion blade 33 and the extrusion portion 62 can be changed by changing the assembly posture relative to the blade support portion 151 using the same blade tip portion 152. This makes it possible to adjust the kneading state of the kneaded material inside the lower hopper 22.

In addition, in this embodiment, the blade support portion 151 is formed at an angle relative to the rotation direction of the pressure blade 134, which makes it difficult for the kneaded material to accumulate on the upper surface of the blade support portion 151.

In this embodiment, as shown in Figures 10(a) and (b), a scraping blade 153 can be provided at the outer tip of the blade support part 151. In detail, the scraping blade 153 formed by bending a plate-shaped member is fixed to the same mounting hole in the blade support part 151 as the blade tip part 152. The scraping blade 153 has a plate-shaped scraping part that rises upward. This scraping part is configured to break and remove bridges of the kneaded material adhering to the inner peripheral surface of the lower hopper 22.

1. Extrusion granulator (rotating device)
2 Granulation section 3 Double shaft
4 Drive unit 11 Housing
11a cover 12 wheel
13 Base plate (flat plate structure)
13a Hooked portion 13b Insertion hole
13c Flange mounting portion (positioning means)
14 Table cover 14a Leak-proof packing
15 Discharge chute 15a Guide plate
16 table motor 21 upper hopper
21a Lattice member 22 Lower hopper
23 Screen guide 23a Screen
24 Turntable 24a Table gear
25 Case member 25a Insertion part
26 Base color 27 Base plate
28 Gasket 31 Inner shaft
31a Lower end of inner shaft 31b Upper end of inner shaft
32 Outer shaft 32a Lower end of outer shaft
32b: Upper end of outer shaft 33: Extrusion blade (first rotor)
34 Pressurizing blade (second rotating body)
35 Cone collar 36 Collar member
37 End cap 38 Seal plate
41 First motor 41a Upper flange (upper mounting portion)
41b Lower flange (lower mounting portion)
41c Upper insertion portion (positioning means)
41d Lower insertion portion 41e First hollow gear
42 Second motor 42a Second flange (second mounting portion)
42b Second insertion portion (second positioning means)
42c Second hollow gear 43 Adapter
43a Inserted portion 43b Through hole
51 Blade support portion 51a Slot
52 Blade tip 53 Scraping blade
61 Push-out arm portion 61a Mounting portion
62 Extrusion section 63 Extrusion section
63a Tip portion 64 Extrusion portion
64a Tip portion 65 Extrusion portion
65a Tip 122 Small diameter hopper
128 Pressure plate 128a Communication hole
134 Pressurizing blade (another embodiment)
151 Blade support portion 152 Blade tip portion
152a First mounting hole 152b Second mounting hole
153 Scraping blade D Gap

Claims (6)

A flat plate-like structure provided horizontally;
A double shaft including an inner shaft and a hollow outer shaft that houses the inner shaft therein and is provided penetrating the flat plate-like structure in the up-down direction;
a case member that is positioned relative to the flat plate-like structure and rotatably supports the dual shaft;
A first rotor provided on an upper side of the flat plate-like structure and connected to the outer shaft;
A second rotor provided on an upper side of the flat plate-like structure and connected to the inner shaft;
A first motor provided below the flat plate-like structure for rotating the outer shaft;
A second motor connected to a lower side of the first motor to rotate the inner shaft,
the first motor is provided with a first output shaft connected to the outer shaft and an upper mounting portion connectable to the flat plate-like structure;
A recess is formed on one of the lower surface of the flat plate-like structure and the upper surface of the upper mounting portion, and a protrusion is formed on the other of the lower surface and the upper mounting portion.
A rotating device in which, when the upper mounting portion is connected to the flat plate-like structure, the convex portion is inserted into the concave portion, thereby positioning the outer shaft so that the axis of the outer shaft coincides with the axis of the first output shaft . the first motor is provided with a lower mounting portion;
the second motor includes a second output shaft coupled to the inner shaft and a second mounting portion coupled to the lower mounting portion;
a second recess is formed on one of a lower surface of the lower mounting portion and an upper surface of the second mounting portion, and a second protrusion is formed on the other of the lower surface and the upper surface of the second mounting portion;
2. The rotating device according to claim 1, wherein when the second mounting portion is connected to the lower mounting portion, the second convex portion is inserted into the second concave portion, thereby positioning the inner shaft so that the axis of the inner shaft coincides with the axis of the second output shaft. The rotating device according to claim 1 or 2, which is provided with a cylindrical screen provided on the upper side of the case member, a cylindrical hopper provided on the upper side of the screen, an extrusion blade provided as the first rotating body at the upper end of the outer shaft, and a pressure blade provided as the second rotating body at the upper end of the inner shaft, and which performs granulation by pressing the kneaded material fed into the hopper against the screen with the extrusion blade while pressurizing the kneaded material downward with the pressure blade. The hopper is detachably provided on the upper side of the screen,
The inner diameter of the hopper is smaller than the inner diameter of the screen, and the hopper is connected to the screen via a pressure plate.
The pressure plate has a communication hole that communicates between the inside of the screen and the inside of the hopper,
The pressure plate is formed so that a lower portion of the communication hole is the same size as an inner diameter of the screen, and an upper portion of the communication hole is the same size as an inner diameter of the hopper,
The rotating device according to claim 3 , wherein the communication hole is formed so that its diameter decreases toward the upper side. the pressurizing blade includes a blade support portion connected to an upper end portion of the inner shaft and extending radially outward from the inner shaft, and a blade tip portion provided at an outer tip portion of the blade support portion,
5. The rotating device according to claim 3, wherein the blade tip portion is detachable from the blade support portion and the position of the blade tip portion relative to the blade support portion is changeable. The rotating device according to claim 5 , wherein the blade support portion is formed in a plate shape and is obliquely provided so that a rear side in the rotation direction is lower than a front side in the rotation direction.

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