Centrifuge, grinding element applicable to the centrifuge, and method for grinding the material to be ground.

Abstract

To provide a centrifuge that can at least reduce the amount of unground material remaining. [Solution] The centrifuge comprises an orbital body that can rotate around its orbital axis, a rotating body that includes a holder and is attached to the orbital body and can rotate around its rotational axis, a container that holds the material to be crushed and is held in the holder, a crushing burr 200 housed in the container, and a drive unit that can impart rotational force to the orbital body and the rotating burr, the crushing burr 200 having a cylindrical main body 210 and a bottom end surface 212 to the upper end surface 21 of the main body 210 The device includes a four-way cutout, a receiving portion 220 that opens to the internal space side of the main body 210 and receives the material to be crushed, and a guiding portion 230 formed in the main body 210, which is an inclined surface connecting the upper end surface 222 of the receiving portion 220 to the bottom end surface 212 of the main body 210, and has a wall portion 232 on the internal space side of the main body 210, and guides the material to be crushed received in the receiving portion 220 to the bottom end surface 212 of the main body 210.

Description

Technical Field

[0001] The present invention relates to a centrifuge and a grinding element applicable to the centrifuge. The present invention also relates to a method for grinding a material to be ground using a centrifuge.

Background Art

[0002] There is known a centrifuge that processes a material to be processed stored in a container by rotating the container while revolving it. This centrifuge is used for various applications. For example, the centrifuge is used as an agitation and defoaming device that simultaneously performs an agitation process and a defoaming process on the material to be processed (Patent Document 1). The centrifuge is also used as an emulsifying device that emulsifies the material to be processed (see Patent Document 2). Further, the centrifuge is also used as a dispersing device that disperses the material to be processed, a polishing device that polishes the material to be processed, and the like.

[0003] As another application described above, the centrifuge is also used as a grinding device that grinds a material to be processed (material to be ground) (see Patent Documents 3 and 4). Here, the centrifuge of Patent Document 4 is said to use a drug such as a tablet as the material to be ground in order to be ingestible even by a person with dysphagia such as a child, but it is said that unground material to be ground also remains. Therefore, when the centrifuge is used as a grinding device, further improvement in grinding ability is required.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Patent Document 3

Patent Document 4

Summary of the Invention

[0005] The present invention has been made in view of the above circumstances. Its purpose is to provide a centrifuge that can at least reduce the amount of unpulverized material remaining, a grinding element applicable to the centrifuge, and a method for grinding the material using the centrifuge. [Means for solving the problem]

[0006] The present invention, which solves the above problems, is comprised of the following inventive features or technical characteristics.

[0007] (1) That is, an invention according to a certain view is a centrifuge comprising: an orbital body rotatable about an orbital axis; a rotating body attached to the orbital body and rotatable about a rotation axis intersecting the orbital axis, the rotating body including a holder; a container held by the holder; a grinder housed in the container together with the material to be ground; and a drive unit capable of applying rotational force to the orbital body and the rotating body, wherein the grinder includes a cylindrical main body; a notch extending from the bottom end surface of the main body toward the upper end surface of the main body, opening at least to the internal space side of the main body and receiving the material to be ground; and an inclined surface formed in the main body connecting the upper end surface of the receiving portion to the bottom end surface of the main body, having at least a wall on the internal space side of the main body and guiding the material to be ground received in the receiving portion toward the bottom end surface of the main body.

[0008] (2) In addition, in the invention of (1), the guide portion may be formed as a convex curved surface.

[0009] (3) In addition, in the invention of (1) or (2), a plurality of receiving portions may be provided, and the guiding portion may be provided for each receiving portion.

[0010] (4) In addition, in the invention of (3), one guide portion is provided for each receiving portion, and the guide portion may be provided on the downstream side of the receiving portion in the rotational direction with respect to the rotation axis of the rotating body.

[0011] (5) In addition, in the invention of (3), two guide portions may be provided for one receiving portion.

[0012] (6) In addition, in the invention of (1) or (2), the main body may further include a weight for increasing the weight of the main body.

[0013] (7) Another invention according to a certain viewpoint is a grinding blade used in a centrifuge comprising: an orbital body rotatable about an orbital axis; a rotating body attached to the orbital body and rotatable about a rotation axis intersecting the orbital axis, the rotating body including a holder; and a drive unit capable of applying rotational force to the orbital body and the rotating body, wherein the grinding blade is housed together with the material to be ground in a container held by the holder, and comprises: a cylindrical main body; a notch extending from the bottom end surface of the main body toward the upper end surface of the main body, opening at least to the internal space side of the main body and receiving the material to be ground; and an inclined surface formed in the main body connecting the upper end surface of the receiving part to the bottom end surface of the main body, having at least a wall on the internal space side of the main body, and guiding the material to be ground received in the receiving part toward the bottom end surface of the main body.

[0014] (8) Another invention according to a certain viewpoint is a centrifuge comprising: an orbital body rotatable about an orbital axis; a rotating body attached to the orbital body and rotatable about a rotation axis intersecting the orbital axis, the rotating body including a holder; and a drive unit capable of applying rotational force to the orbital body and the rotating body, wherein a method for grinding a material to be ground is provided, comprising the steps of placing the material to be ground and the grinding particles in a container and holding the container in the holder, wherein the grinding particles comprise a cylindrical main body and a direction from the bottom end surface of the main body to the upper end surface of the main body A method for crushing a material to be crushed, comprising the steps of: a step including an extending notch that opens at least to the internal space side of the main body and includes a receiving portion for receiving the material to be crushed; a step including an inclined surface formed in the main body that connects the upper end surface of the receiving portion to the bottom end surface of the main body and has at least a wall portion on the internal space side of the main body, for guiding the material to be crushed received in the receiving portion to the bottom end surface of the main body; and a step of crushing the material to be crushed by rotating the orbital body and the rotational body with the drive unit. [Effects of the Invention]

[0015] According to the present invention, it is possible to provide a centrifuge that can at least reduce the amount of unpulverized material remaining, a grinding element applicable to the centrifuge, and a method for grinding the material using the centrifuge. [Brief explanation of the drawing]

[0016] [Figure 1] This is an end view (including a partial block diagram) showing the schematic configuration of a centrifuge according to one embodiment of the present invention. [Figure 2] (a) an enlarged front view, (b) an enlarged top view, and (c) an enlarged bottom view of a grinder according to one embodiment of the present invention. [Figure 3] This is a flowchart illustrating a method for grinding a material to be ground according to one embodiment of the present invention. [Figure 4] (a) an enlarged front view, (b) an enlarged top view, and (c) an enlarged bottom view of a grinder according to one embodiment of the present invention. [Figure 5](a) Enlarged front view, (b) enlarged plan view, and (c) enlarged bottom view of the pulverizer according to an embodiment of the present invention. [Figure 6] Front view of the pulverizer according to an embodiment of the present invention. [Figure 7] Plan view of the pulverizer according to an embodiment of the present invention. [Figure 8] Bottom view of the pulverizer according to an embodiment of the present invention. [Figure 9] Perspective view of the pulverizer according to an embodiment of the present invention. [Figure 10] Reference front view showing the names of the respective parts of the pulverizer according to an embodiment of the present invention.

Mode for Carrying Out the Invention

[0017] Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the embodiments described below are merely examples, and there is no intention to exclude various modifications and applications of technologies not explicitly described below. The present invention can be implemented with various modifications (for example, combining each embodiment) without departing from the gist thereof.

[0018] <0OO0101>In addition, the present invention substantially determines each numerical value. For example, in the case where the first numerical value and the second numerical value are equal, in the present invention, if both values exhibit an effect equivalent to the effect exhibited when the two values are mathematically strictly equal, even if there is a difference between the two values, the two values are treated as being equal. Also, in the description of the following drawings, the same or similar parts are denoted by the same or similar reference numerals. The drawings are schematic and do not necessarily match actual dimensions, ratios, etc. There may be parts where the dimensional relationships and ratios are different between the drawings.

[0019] Figure 1 is an end view (including a partial block diagram) showing the schematic configuration of a centrifuge according to one embodiment of the present invention. The figure shows the end view when cut by a plane including the orbital axis L1 and the rotational axis L2. As shown in the figure, the centrifuge 1 is composed of an orbital body 10, a rotational body 20, a support substrate 30, a drive unit 40, and a control unit 50. In addition, the centrifuge 1 may include a balance weight (not shown), a partition (not shown) that demarcates the space including the region in which the orbital body 10 rotates, and a housing (not shown). The centrifuge 1 can also be understood as including a container 100 and a grinding element 200.

[0020] The orbiting body 10 is composed of a shaft portion 11, a first arm 12, and a second arm 13. The orbiting body 10 is rotatably supported by the shaft portion 11 on the support base plate 30 and is rotated by the drive unit 40 around the orbital axis L1, which is a virtual straight line.

[0021] The first arm 12 extends in a first direction perpendicular to the orbital axis L1 and is configured to bend upward midway, to which the rotating body 20 is attached. The second arm 13 extends in a second direction opposite to the first direction and is configured to which the balance weights are attached to balance the rotation of the orbital body 10 and improve quietness, etc. It is also conceivable that the second arm 13 extends in a second direction and is configured to bend upward midway, to which a different rotating body 20 from the one attached to the first arm 12 is attached.

[0022] The rotating body 20 is composed of a shaft portion 21 and a holder portion 22. The rotating body 20 is rotatably held by the shaft portion 21 toward the tip of the bent portion of the first arm 12 of the orbiting body 10, and is rotated by the drive unit 40 around a virtual straight line, the rotation axis L2. Based on the above arrangement, the rotation axis L2 has a predetermined inclination angle with respect to the orbital axis L1. That is, the rotation axis L2 intersects the orbital axis L1 above the rotation axis L2.

[0023] The holder portion 22 is configured as a bottomed cylindrical shape, with the end opposite to the end face to which the shaft portion 21 is attached being open, forming an open end. The holder portion 22 receives and holds the container 100 from the bottom through this open portion.

[0024] The drive unit 40 is comprised of, for example, a motor, and gears, pulleys, and belts that transmit the rotational force generated by the motor to the shafts 11 and 21. The control unit 50 controls the operation of the entire centrifuge 1, including the operation of the drive unit 40. The control unit 50 is composed of a processor and the like. The control unit 50 may include an input unit (not shown) for receiving user input, an output unit (not shown) for informing the user of the operating status of the centrifuge 1, etc. In other words, the control unit 50 can also be composed of a laptop computer or the like.

[0025] In the centrifuge 1 configured as described above, the container 100 containing the material to be pulverized M and the pulverizer 200 is held in the holder portion 22 of the rotating body 20, and the rotating body 10 rotates around the orbital axis L1 while the rotating body 20 rotates around the rotational axis L2. As a result, the container 100 revolves around the orbital axis L1 and rotates around the rotational axis L2, so that the material to be pulverized M contained in the container 100 together with the pulverizer 200 is pulverized.

[0026] The container 100 is a bottomed cylindrical shape with one end open, specifically a bottomed cylindrical shape. That is, the container 100 has a bottom portion 100a and a side wall portion 100b. The container 100 may be made of resin, ceramic, glass, metal, etc., depending on the type of material M to be crushed. The container 100 may have a lid (not shown) attached to its opening. The container 100 houses the crushing particles 200 without fixing them to it. That is, the container 100 allows the crushing particles 200 to move inside as the orbiting body 10 rotates around its orbital axis L1 and the rotating body 20 rotates around its rotational axis L2.

[0027] The crushing element 200 is used to crush the material M to be crushed, and further details will be described later. The material to be crushed M is any material that requires crushing and can be crushed by compression and / or grinding, and is not particularly limited. Among these, pharmaceuticals such as tablets are materials to be crushed M that can be crushed particularly well.

[0028] Figure 2 shows an enlarged front view, an enlarged top view, and an enlarged bottom view of a grinder according to one embodiment of the present invention. The grinder 200 may be made of resin, ceramic, glass, metal, etc., depending on the type of material M to be ground. The grinder 200 includes a main body 210, a receiving part 220, and a guide part 230. In this application, counterclockwise rotation in the plan view is indicated as direction A, and clockwise rotation is indicated as direction B.

[0029] The main body 210 is configured as a cylindrical shape with a predetermined wall thickness, extending from the bottom end surface 212 to the top end surface 214 along its centerline CL. That is, the main body 210 has an internal space 211. The main body 210 needs to have a predetermined weight in order to crush the material M to be crushed. To achieve this weight, the length of the main body 210 from the bottom end surface 212 to the top end surface 214 is determined. That is, the main body 210 itself may also serve as a weight. Alternatively, the main body 210 may be configured to include a weight (not shown), more specifically, by having a weight (not shown) attached to it and / or by having a weight (not shown) built inside, thereby achieving the predetermined weight. In this case, the length of the main body 210 from the bottom end surface 212 to the top end surface 214 may be the minimum necessary to form the receiving portion 220.

[0030] The required thickness and weight of the main body 210 are determined based on various factors such as the type of material M to be crushed, its size in its uncrushed state, and the rotational speed of the orbital body 10 around the orbital axis L1. However, it is not necessary to determine these theoretically; they can be determined experimentally. For example, a test main body with a certain thickness and weight (more specifically, a test crusher including the receiving section 220 and the guide section 230) can be prepared, and a crushing experiment of the material M to be crushed using a centrifuge can be conducted. If the desired crushing result is obtained, it can be determined that the test main body has the required thickness and weight, i.e., that it can be used as the main body 210.

[0031] The bottom end surface 212 of the main body 210 compresses and / or grinds the material M to be crushed, which is guided by the guide unit 230.

[0032] The receiving portion 220 is a notch formed in the main body portion 210, extending from the bottom end surface 212 toward the upper end surface 214 of the main body portion 210, and opening to the internal space 211 side and the outside of the main body portion 210. The receiving portion 220 receives the material to be crushed M, and therefore its size may be determined considering the size of the uncrushed material to be crushed M, etc. One or more receiving portions 220 may be provided; for example, four receiving portions 220-1 to 220-4 may be provided as shown in the figure.

[0033] The guide section 230 is formed in the main body 210 and is provided adjacent to each receiving section 220 (if there are four receiving sections 220-1 to 220-4 as shown in the figure, then there are four guide sections 230-1 to 230-4). More specifically, the guide section 230 is provided downstream of each receiving section 220 in the direction of rotation around the rotation axis L2 of the rotating body 20. That is, when the direction of rotation around the rotation axis L2 of the rotating body 20 is direction A, it is provided to the right of the receiving section 220 in a front view of the crushing crumb 200, as shown in the figure. On the other hand, when the direction of rotation around the rotation axis L2 of the rotating body 20 is direction B, it is provided to the left of the receiving section 220 in a front view of the crushing crumb 200, unlike in the figure. The guide section 230 is formed as a planar inclined surface connecting the upper end surface 222 of the receiving section 220 to the bottom end surface 212 of the main body section 210, and guides the material to be crushed M received in the receiving section 220 to the bottom end surface 212 of the main body section 210 while compressing it. The guide section 230 has a wall portion 232 on the side of the internal space 211 of the main body section 210 that prevents the material to be crushed M being guided from leaking into the internal space 211 of the main body section 210.

[0034] Figure 3 is a flowchart illustrating a method for pulverizing a material M using a centrifuge according to one embodiment of the present invention. In this explanation, the rotating body 20 is assumed to rotate in direction A around its rotation axis L2.

[0035] First, the user of the centrifuge 1 places the material to be pulverized M and the grinding element 200 into the container 100 (S301). At this time, the material to be pulverized M and the grinding element 200 are placed in the container 100 so that the material to be pulverized M is located in the internal space 211 of the main body 210 of the grinding element 200. For example, the user first places the grinding element 200 into the container 100, and then places the material to be pulverized M into the internal space 211 of the main body 210 of the grinding element 200. Note that the grinding element 200 is not fixed to the container 100. Next, the user places the container 100 containing the material to be pulverized M and the pulverizer 200 into the holder portion 22 of the rotating body 20 of the centrifuge 1 (S302).

[0036] Next, the user operates the centrifuge 1 by manipulating the control unit 50, etc. (S303). As a result, the control unit 50 controls the drive unit 40, causing the drive unit 40 to rotate the orbital body 10 around the orbital axis L1 and the rotating body 20 around the rotational axis L2. As a result of the drive unit 40 rotating the orbital body 10 and the rotating body 20, the container 100 revolves around the orbital axis L1 while rotating on its own axis L2. Here, the crushing element 200 is generally positioned on the centrifugal side of the orbital axis L1 within the container 100 due to the centrifugal force caused by the rotation of the orbital body 10, but there may be periods when it rotates together with the container 100 due to friction between its outer surface and the inner surface of the container 100. Therefore, the crushing element 200 effectively rotates in direction A at a slower speed than the container 100, on the centrifugal side of the orbital axis L1 within the container 100. On the other hand, the material to be crushed M is gathered on the centrifugal side relative to the orbital axis L1 in the internal space 211 of the main body 210 of the crushing burr 200 due to the centrifugal force caused by the rotation of the orbital body 10, and is further subjected to a force directed in the centrifugal direction relative to the orbital axis L1. In this state, the material to be crushed M is received by the receiving section 220 because the crushing burr 200 rotates at a slower speed than the container 100, and is guided by the guiding section 230 to the bottom end surface 212 of the main body 210. During this guidance, the material to be crushed M is compressed because the guiding section 230 is an inclined surface connecting the upper end surface 222 of the receiving section 220 to the bottom end surface 212 of the main body 210. The material to be crushed M can be partially crushed by this compression. Furthermore, the material to be crushed M is prevented from leaking (escaping) into the internal space 211 of the main body 210 because the guide section 230 has a wall section 232 on the side facing the internal space 211 of the main body 210. The material to be crushed M, guided to the bottom end surface 212 by the guide section 230, is crushed by compression and / or grinding by the bottom end surface 212. This basically completes the crushing of the material to be crushed M, but a portion of it is received by the next receiving section 220 (for example, if the first receiving section 220 that received it was receiving section 220-1, it is received by receiving section 220-2), and is further crushed by being guided again to the bottom end surface 212 of the main body 210 by the guide section 230 (guide section 230-2 in this example).Furthermore, some of the remaining material is temporarily moved to the internal space 211 of the main body 210, and then received again by the receiving section 220 and further crushed.

[0037] Next, the user or control unit 50 determines whether the grinding of the material M in the centrifuge 1 is complete (S304). For example, the user or control unit 50 measures the time since the centrifuge 1 was started and determines whether the grinding of the material M is complete based on whether the measured time has reached the planned operating time of the centrifuge 1. If the user or control unit 50 determines that the grinding of the material M is complete (YES in S304), the process proceeds to S305. On the other hand, if the user or control unit 50 determines that the grinding of the material M is not complete (NO in S304), the process remains in S304 and waits.

[0038] Next, the user stops the centrifuge 1 by operating the control unit 50, or the control unit 50 stops the centrifuge 1 (S305). Specifically, when the user stops the centrifuge 1 by operating the control unit 50, the control unit 50 controls the drive unit 40, which in turn stops the rotation of the orbital body 10 and the rotating body 20. Also, when the control unit 50 stops the centrifuge 1, the control unit 50 controls the drive unit 40, which in turn stops the rotation of the orbital body 10 and the rotating body 20. After that, the user can remove the container 100 from the centrifuge 1, and then remove the grinding particles 200 from the container 100, and use the ground material M inside the container 100.

[0039] Table 1 shows the experimental results. In Example, Comparative Example 1, and Comparative Example 2, 10 tablets (Paralone® Kaze EX Gold) were used as the material to be crushed, and a container similar in shape to container 100 shown in Figure 1 was used. In addition, a Thinky ARE-310 was used as centrifuge 1. The operating time of centrifuge 1 was 15 seconds, and the operating mode was set to stirring mode. The individual conditions other than those mentioned above for Example, Comparative Example 1, and Comparative Example 2 are as follows. (Examples) • As the grinding element, one with the same shape as grinding element 200 shown in Figure 2 is used. The crushing element is housed in a container, and the material to be crushed M is housed in the internal space of the main body of the crushing element. (Comparative Example 1) As comparative example grinder A, which corresponds to the grinder used in the example, a grinder was used that differed only from the grinder in the example in that its length was approximately half (resulting in approximately half its weight). The comparative example grinder A is placed in a container, and the material to be ground M is placed in the internal space of the main body of the comparative example grinder A. (Comparative Example 2) • As comparative example grinder B corresponding to the grinder, a grinder is used that differs from the grinder of the example only in that it lacks the wall portion of the guide section. The comparative example grinder B is placed in a container, and the material to be ground M is placed in the internal space of the main body of the comparative example grinder B.

[0040] [Table 1]

[0041] As shown in Table 1, unlike Comparative Examples 1 and 2, the embodiment was able to completely pulverize the material M to be pulverized. This is thought to be due to the fact that the pulverizer has the necessary weight to properly pulverize the material M, and that the guide section has a wall which prevents the material M to be pulverized from leaking into the internal space of the main body of the pulverizer during guidance, thereby guiding the material M to the bottom end surface of the main body.

[0042] The embodiments described above are illustrative examples for illustrating the present invention and are not intended to limit the invention to these embodiments only. The present invention can be implemented in various forms without departing from its spirit.

[0043] For example, in the methods disclosed herein, steps, operations, or functions may be performed in parallel or in different orders, as long as this does not result in a contradiction in the outcome. The steps, operations, and functions described are provided merely as examples, and some of the steps, operations, and functions may be omitted, combined with each other to form a single unit, or other steps, operations, or functions may be added, without departing from the spirit of the invention.

[0044] Furthermore, the guide unit 230 may have a wall portion (not shown) on the external side of the main body 210. This allows the guide unit 230 to prevent the material to be crushed M from leaking to the outside of the main body 210 during guidance. Furthermore, it is conceivable that the receiving section 220 does not open to the outside of the main body 210, that is, it has a wall (not shown) on the outside of the main body 210. This allows the crushing burr 200 to prevent the received material to be crushed M from leaking to the outside of the main body 210.

[0045] The crushing element may also be configured as a crushing element 200a as shown in Figure 4. The crushing element 200a differs from the crushing element 200 only in that the guide unit 230 is changed to a guide unit 230a. The other components are the same as those of the crushing element 200, so they are given the same reference numerals and their explanation is omitted.

[0046] The guide section 230a differs from the guide section 230 in that it is formed as a convex curved inclined surface. This formation allows the guide section 230a to guide the material to be crushed M received in the receiving section 220 to the bottom end surface 212 of the main body section 210 while compressing it more than the guide section 230, thereby promoting the crushing of the material to be crushed M.

[0047] Alternatively, the crushing element may be configured as crushing element 200b as shown in Figure 5. Crushing element 200b differs from crushing element 200 only in that guide sections 230 are provided on both sides of the receiving section 220. Other components are the same as those of crushing element 200, so the same reference numerals are used and their explanation is omitted.

[0048] The crushing element 200b can be used whether the rotation direction of the rotating body 20 around its rotation axis L2 is in direction A or direction B. For example, even if the centrifuge 1 has a function to change the rotation direction of the rotating body 20 around its rotation axis L2 during operation, the crushing element 200b can be suitably used. In the case of the crushing element 200b, a portion of the material to be crushed M crushed by the bottom end surface 212 is received by the next receiving section 220 via the next guide section 230, and then further crushed by being guided to the bottom end surface 212 of the main body section 210 by the next guide section 230.

[0049] Furthermore, in the crushing element 200b, it is also possible to use a guide unit 230a instead of a guide unit 230.

[0050] Figure 6 is a front view of the grinder according to one embodiment of the present invention, Figure 7 is a top view of the grinder according to one embodiment of the present invention, Figure 8 is a bottom view of the grinder according to one embodiment of the present invention, Figure 9 is a perspective view of the grinder according to one embodiment of the present invention, and Figure 10 is a reference front view showing the names of each part of the grinder according to one embodiment of the present invention. In these figures, the shading shown on the entire surface of the grinder according to one embodiment of the present invention is for the purpose of specifying the shape of the three-dimensional surface. In addition, the shading that appears in the background of these figures has no particular meaning. Note that in the grinder according to one embodiment of the present invention, the rear view, right side view, and left side view are omitted because they appear the same as the front view. [Industrial applicability]

[0051] This invention can be widely used in the field of centrifuges that rotate and revolve, particularly centrifuges used as grinders. [Explanation of Symbols]

[0052] 1: Centrifuge, 10: Orbital body, 11: Shaft, 12: First arm, 13: Second arm, 20: Rotating body, 21: Shaft, 22: Holder, 30: Support base, 40: Drive unit, 50: Control unit, 100: Container, 100a: Bottom, 100b: Side wall, 200: Grinding element, 200a grinding element, 200b grinding element, 210: Main body, 211: Internal space, 212: Bottom end face, 214: Top end face, 220: Receiving section, 222: Top end face, 230: Guiding section, 230a: Guiding section, 232: Wall, CL: Centerline, L1: Orbital axis, L2: Rotation axis, M: Material to be ground

Claims

1. A body that can rotate around its orbital axis, A rotating body attached to the aforementioned orbital body, which is rotatable about a rotation axis that intersects the aforementioned orbital axis, and the rotating body including a holder portion, The container held in the holder portion, A grinder is stored in the aforementioned container together with the material to be ground, A drive unit capable of applying rotational force to the orbiting body and the rotating body, Equipped with, The aforementioned grinding element is A cylindrical main body, A notch extending from the bottom end surface of the main body toward the upper end surface of the main body, which opens at least to the internal space side of the main body and has a receiving portion for receiving the material to be crushed, A guide portion is formed in the main body and is an inclined surface connecting the upper end surface of the receiving portion to the bottom end surface of the main body, having at least a wall portion on the internal space side of the main body, which guides the material to be crushed received in the receiving portion to the bottom end surface of the main body, A centrifuge, including a centrifuge.

2. The centrifuge according to claim 1, wherein the guide portion is formed as a convex curved surface.

3. The centrifuge according to claim 1 or 2, wherein a plurality of receiving sections are provided, and a guide section is provided for each of the receiving sections.

4. The centrifuge according to claim 3, wherein one guide unit is provided for each receiving unit, and is provided on the downstream side of the receiving unit in the rotational direction about the rotation axis of the rotating body.

5. The centrifuge according to claim 3, wherein two of the guide units are provided relative to the receiving unit.

6. The centrifuge according to claim 1 or 2, wherein the main body further includes a weight for increasing the weight of the main body.

7. A grinding blade used in a centrifuge comprising: an orbital body rotatable about an orbital axis; a rotating body attached to the orbital body and rotatable about a rotational axis intersecting the orbital axis, the rotating body including a holder; and a drive unit capable of applying rotational force to the orbital body and the rotating body, The pulverizer is housed together with the material to be pulverized in a container held in the holder portion. A cylindrical main body, A notch extending from the bottom end surface of the main body toward the upper end surface of the main body, which opens at least to the internal space side of the main body and has a receiving portion for receiving the material to be crushed, A guide portion is formed in the main body and is an inclined surface connecting the upper end surface of the receiving portion to the bottom end surface of the main body, having at least a wall portion on the internal space side of the main body, which guides the material to be crushed received in the receiving portion to the bottom end surface of the main body, A grinding particle containing a grinder.

8. A centrifuge comprising: an orbital body rotatable about an orbital axis; a rotating body attached to the orbital body and rotatable about a rotational axis intersecting the orbital axis, the rotating body including a holder; and a drive unit capable of applying rotational force to the orbital body and the rotating body, wherein a method for grinding a material to be ground is provided. A step of placing the material to be crushed and the crusher in a container and holding the container in the holder, wherein the crusher includes a cylindrical main body, a notch extending from the bottom end surface of the main body toward the upper end surface of the main body, opening at least to the internal space side of the main body and receiving the material to be crushed, and a guide portion formed in the main body, connecting the upper end surface of the receiving portion to the bottom end surface of the main body, having at least a wall on the internal space side of the main body, and guiding the material to be crushed received in the receiving portion to the bottom end surface of the main body, The drive unit rotates the orbiting body and the rotating body to pulverize the material to be pulverized. A method for grinding a material to be ground, including the method described above.

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