JP6518435B2 - Stirrer and operating method thereof - Google Patents

Description

  The present invention relates to a stirrer for stirring a raw material introduced into a container and a method of operating the same.

  A stirrer is used, for example, when stirring a raw material and manufacturing a desired product. Such stirrers are widely used in various fields such as chemistry, food, medicine, energy and the like. A stirrer used in this type of field generally comprises a cylindrical container into which the raw material is charged, and a stirring blade rotatably provided in the container, and the stirring blade is rotated. Stir the ingredients in the container by

  Such a stirrer may be used in applications where the raw materials are simply stirred and mixed, and may also be used in applications where the raw materials are mixed and granulated. Some of the stirrers for granulating the raw material are provided with a secondary blade called a pulverizing blade on the side of the container in order to increase the granulation efficiency.

  Moreover, the container of such a stirrer generally has a container body and a lid member capable of opening and closing the container body. Thereby, it is possible to clean the inner wall of the container, that is, the inner wall of the container body and the inner wall of the lid member by opening the lid member. In particular, when the raw material to be stirred has viscosity and wettability, a large amount of the raw material easily adheres to the inner wall of the container at the time of stirring. As described above, when a large amount of the raw material may adhere to the inner wall of the container, an operation of removing the adhered raw material may be frequently performed by opening the lid member.

  On the other hand, a stirrer capable of removing the raw material adhering to the inner wall of the container without opening the lid member as described above is also conventionally known. For example, Patent Document 1 discloses a stirring device having a scraper that rotates in the vicinity of the inner wall of a cylindrical container. The stirring device disclosed in the patent document 1 includes two stirring blades capable of planetary movement, a scraper fixing arm is connected to a revolving shaft of these stirring blades, and a scraper fixed to the scraper fixing arm. Connected through.

  In this patent document 1, after the clearance between the inner wall of the container and the scraper is made constant, the rotary shaft may be fixed, and the scraper may be fixed to the inner wall of the container at a position above the paste (raw material) liquid level upper limit. It is disclosed that it may be in contact, and may be installed so as not to be in contact with the inner wall of the container below the paste liquid level upper limit.

JP, 2006-272139, A

  When a scraper as described above is provided in a stirrer, it is desirable to take measures to prevent the scraper from being abraded and contamination of the raw material from being abraded by the scraper, and mixing of members such as bolts for mounting the scraper into the raw material. Be In particular, in the food field and the pharmaceutical field, there is a possibility that the contamination of foreign substances such as the above-mentioned abrasion powder and members may affect the human body, and it is strongly desired to surely prevent the contamination.

  With regard to the wear of the scraper, it is desirable to avoid, for example, the aspect in which the scraper is fixed in a state of being strongly pressed against the inner wall of the container, since the progress of the wear of the scraper can be promoted. In this regard, the scraper disclosed in Patent Document 1 can suppress wear because the clearance with the inner wall of the container is made constant. However, in the embodiment in which the clearance is secured between the scraper and the inner wall of the container, the effect of removing the raw material by the scraper can not be sufficiently obtained. Therefore, in the scraper according to Patent Document 1, there is room for improvement in improving the effect of removing the raw material while suppressing the wear of the scraper.

  In addition, even when a scraper is used, the raw material may remain on the inner wall of the container. In such a case, it is also possible, as appropriate, to open the lid of the container and manually remove the remaining raw material.

  However, manual removal of the material as described above can reduce the working efficiency, and in particular, when stirring a material with high pharmacological activity in the pharmaceutical field, the material adversely affects workers. Is not desirable. Therefore, there is a need for a scraper that can sufficiently remove the deposited material without manually removing the material. However, the scraper disclosed in Patent Document 1 is attached so as to extend on the inner wall side of the container while extending to one side in a direction along the inner wall of the cylindrical container from the rotation axis disposed in the vicinity of the inner wall of the cylindrical container Therefore, when the scraper rotates to the one side, the removal effect of the raw material can be expected, but when inverted, the removal effect of the raw material can not be expected. Therefore, if there are protrusions such as temperature sensors or disintegrating blades on the side wall of the container, the rotation range of the scraper is limited to prevent interference with these protrusions, and the raw material attached on the inner wall of the container The area that can not be removed is relatively large. Also in this point, the scraper concerning this patent document 1 has room for improvement in improving the removal effect of a raw material.

  Moreover, regarding the member for attachment of a scraper, in order to prevent mixing with the raw material of such a member, it is desirable to suppress the number of parts of a member as much as possible. Here, for example, Patent Document 1 describes that a scraper may be connected to a rotating shaft, and the rotating shaft may have a mechanism for adjusting the rotation width with a spring, a damper, or the like. However, such an aspect is not desirable because the number of parts is increased and the possibility of mixing of members is increased. The scraper can also return the raw material removed from the inner wall of the container to the raw material being stirred, but since some of the raw material adheres to the scraper, it needs to be periodically cleaned. Also in this case, it is desirable to be able to easily perform disassembly and cleaning because the number of parts is small.

  The present invention has been made in consideration of such points, and can suppress wear of the scraper, and can reduce the number of parts for mounting the scraper to a raw material of a member for mounting. An object of the present invention is to provide a stirrer which can be easily disassembled and cleaned while preventing mixing, and can effectively remove the raw material adhering to the inner wall of the container, and its operating method.

  The present invention is a stirrer for stirring a raw material introduced into a container, the scraper arm having a shaft member extending along the inner wall of the container, and a scraper rotatably attached to the shaft member. The scraper arm is configured to rotate the shaft member in the circumferential direction of the container around the central axis of the container along the inner wall of the container, and the scraper A first edge portion and a second edge portion formed at mutually different positions in a rotational direction about the central axis of the shaft member, the scraper taking the central axis of the shaft member as a rotation center By rotating to one side in the rotational direction, the first edge portion contacts the inner wall of the container, and the second edge portion is separated from the inner wall of the container, The second edge portion contacts the inner wall of the container by rotating the scraper to the other side in the rotational direction about the central axis of the shaft member, and the first edge portion is the inner wall of the container Is a stirrer, which is adapted to be spaced apart.

  In the stirrer, preferably, the scraper arm is capable of rotating the shaft member to one side and the other side in the circumferential direction of the container.

  In this case, in the stirrer, the container has a side wall having a circular cross section, and the side wall is provided with a disintegrating blade, and the shaft member is parallel to the central axis of the container. Extends along the inner wall of the container, and the scraper arm rotates the shaft member along the inner wall of the side wall portion to one side and the other side of the container in the circumferential direction to break up the scraper It may be possible to make the blades approach and depart.

  Further, in this case, in the stirrer, the disintegrating blade is attached to the rotary shaft portion at a position separated in the radial direction of the container from the side wall portion and a rotary shaft portion protruding into the container from the side wall portion. A portion of the scraper that overlaps at least the central axis of the container with the rotary shaft portion in the direction of rotation about the central axis of the shaft member; Preferably, the distance between the first edge portion and the second edge portion is smaller than that of the other portions.

  Further, in the stirrer, preferably, the scraper arm is capable of rotating the shaft member during the stirring operation of the stirrer.

  Further, in the stirrer, when viewed along the central axis direction of the shaft member, the scraper is formed in a triangular shape, and the first edge portion is formed in one of two triangular corner portions. The second edge portion may be formed on the other side.

  Further, according to the present invention, in the method of operating the stirrer, the step of stirring the raw material introduced into the container, and the scraper arm along the inner wall of the container by the scraper arm And rotating the scraper in the circumferential direction of the container by rotating the scraper in the circumferential direction about the central axis as a rotation center.

  According to the present invention, wear of the scraper can be suppressed, and decomposition cleaning can be easily performed while preventing mixing of the mounting member into the material of the mounting member by suppressing the number of parts for mounting the scraper to a small number. Can. And the raw material adhering to the inner wall of a container can be removed effectively.

FIG. 1 is a schematic cross-sectional view of a stirrer according to a first embodiment of the present invention. It is the schematic of a stirrer when it sees along the AA of FIG. It is an enlarged view of the scraper arm of the stirrer shown in FIG. It is a figure which shows the connection part provided in the edge part of the 1st axial member of the 1st arm part which the arm for scrapers shown in FIG. 2 has, and (A) is the case at the time of seeing in the arrow B direction of FIG. It is a figure, (B) is a sectional view which meets a C-C line of (A). (A)-(C) are figures explaining the connection aspect of the 1st axial member and 2nd axial member in the 1st arm part which the arm for scrapers shown in FIG. 2 has. It is a figure which shows the scraper attached to the arm for scrapers shown in FIG. 2, (A) is sectional drawing in alignment with the DD line of FIG. 1, (B) and (C) are the scrapers supporting the said scraper. It is a figure which shows a mode that it rotates centering | focusing on the shaft member to rotate. FIG. 6 is a view for explaining how the scraper shown in FIG. 5 removes the raw material adhering to the inner wall of the container, and (A) shows a state before the scraper arm rotates around the central axis of the container. And (C) is a figure which shows a mode that a scraper removes the raw material adhering to the inner wall of a container, when the arm for scrapers rotates. It is a schematic sectional drawing of the stirrer by 2nd Embodiment of this invention. It is the figure which looked at the principal part of the stirrer along the EE line of FIG. It is a schematic sectional drawing of the stirrer by 3rd Embodiment of this invention. It is sectional drawing in alignment with the FF line of FIG. It is a figure explaining operation | movement of the scraper in the stirrer of FIG.

  Hereinafter, a stirrer according to each embodiment of the present invention will be described with reference to the drawings.

First Embodiment
The first embodiment will be described below. FIG. 1A is a schematic cross-sectional view of a stirrer 1 according to the present embodiment, and FIG. 1B is a schematic view of the stirrer 1 as viewed along the line AA of FIG. As shown in FIGS. 1A and 1B, a stirrer 1 according to the present embodiment includes a container 2 into which a raw material is charged, a stirring blade 10 rotatably provided in the container 2, a dusting blade 20, and a scraper arm. 30 and scrapers 44, 45 and 52 attached to the scraper arm 30.

  The container 2 of the present embodiment has a bottomed cylindrical container body 3 and a disk-shaped lid member 4 that covers the open portion of the container body 3 so as to be openable and closable. The central axis of the container body 3 and the central axis of the lid 4 are located on the same axis. Hereinafter, an axis in which the central axis of the container body 3 and the central axis of the lid member 4 are located in common is referred to as a central axis C1 of the container 2. Further, a direction perpendicular to the central axis C1 is referred to as a radial direction of the container 2, and a direction around the central axis C1 is referred to as a circumferential direction. Moreover, for convenience of explanation, the direction in which the lid member 4 is located in the direction of the central axis C1 with respect to the inside of the container 2 may be referred to as the upper side, and the opposite direction may be referred to as the lower side. However, the present invention is not construed as being limited to the directions described in the embodiments.

  In the illustrated example, the container body 3 has a bottom 3A and a side wall 3B having a circular cross section extending upward from the outer peripheral edge of the bottom 3A, and the side wall 3B is open upward. There is. In this example, the side wall portion 3B has a cylindrical first side wall portion 3B1 extending along the central axis C1 from the outer peripheral edge of the bottom portion 3A and a second diameter decreasing as it extends upward from the upper end edge of the first side wall portion 3B1. And a side wall portion 3B2. Here, the inner wall 3C1 of the first side wall 3B1 extends along the central axis C1, and the inner wall 3C2 of the second side wall 3B2 extends toward the central axis C1 as it extends upward. Moreover, the container main body 3 has the jacket 5 which covers side wall part 3B from the outer side.

  Further, the lid member 4 is in contact with the upper end edge of the second side wall portion 3B1 of the side wall portion 3B of the container main body 3, and covers the open portion of the container main body 3 in an openable / closable manner. Here, the inner wall 4 </ b> C of the lid member 4 extends along the radial direction of the container 2.

  The stirring blade 10 is provided on the bottom 3A side of the container body 3, and the driving shaft 11 for the stirring blade of the driving device including a motor (not shown) penetrating the bottom 3A from the outside of the container body 3 along the central axis C1. Connected to Thereby, the stirring blade 10 is rotated about the central axis C1 according to the rotational driving of the stirring blade drive shaft 11 of the drive device.

  The disintegrating blade 20 is provided on the first side wall 3B1 of the side wall 3B of the container body 3. A plurality of powdering blades 20 are fixed to the rotary shaft 21 projecting from the first side wall 3B1 into the interior of the container 2 and to the rotary shaft 21 at a position spaced apart from the first side wall 3B1 in the radial direction of the container 2 And the main body 22 of the blade. A chopper motor 24 is disposed outside the container body 3, and a drive shaft 23 of the chopper motor 24 extends from the outside of the container body 3 to the inside. The rotating shaft portion 21 is connected to the drive shaft 23. As a result, in response to the rotational driving of the drive shaft 23 of the chopper motor 24, the disintegrating blade 20 rotates about the central axis of the rotary shaft portion 21 as a rotation center.

  The scraper arm 30 is provided on the lid member 4 side of the container 2 and is connected to the drive shaft 32 of the scraper arm motor 31 penetrating the lid member 4 from the outside of the container 2 along the central axis C1. There is. The scraper arm motor 31 is provided above the lid member 4, and the tip 32 A of the drive shaft 32 penetrates the lid member 4 and is exposed inside the container 3. The scraper arm 30 is attached to the distal end portion 32A. Thus, the scraper arm 30 rotates about the central axis C1 in accordance with the rotational driving of the drive shaft 32 of the scraper arm motor 31.

  FIG. 2 is an enlarged view of the scraper arm 30 shown in FIG. As shown in FIGS. 1A and 2, the scraper arm 30 according to the present embodiment includes a connecting cylindrical portion 35 fixed to the distal end 32A in a state where the distal end 32A of the drive shaft 32 is inserted; A first arm 40 and a second arm 50 extend from the outer peripheral portion of 35 into the interior of the container 2.

  The first arm portion 40 extends from the connecting cylindrical portion 35 in the radial direction of the container 2 to the first shaft member 41 extending downward, and from the tip of the first shaft member 41 to the second side wall portion 3B2 of the container main body 3 A third shaft member 43 extending along the inner wall 3C2 of the first side wall portion 3B1 of the container main body 3 from the tip end of the second shaft member 42, and ,have. Further, the second arm unit 50 includes a fourth shaft member 51 extending in the radial direction of the container 2 along the inner wall 4C of the lid member 4 from the connection cylindrical portion 35.

  Among these, the inclined inner wall scraper 44 is attached to the second shaft member 42 rotatably around the central axis La of the second shaft member 42 as a rotation center. Further, a scraper 45 for vertical inner wall is attached to the third shaft member 43 so as to be rotatable about the central axis Lb of the third shaft member 43 as a rotation center. In addition, a scraper 52 for the lid inner wall is attached to the fourth shaft member 51 so as to be rotatable about the central axis Lc of the fourth shaft member 51 as a rotation center.

  The inclined inner wall scraper 44 is formed to extend along the second shaft member 42, and a hole 44A into which the second shaft member 42 is inserted is formed. By inserting the second shaft member 42 into the hole 44A, the inclined inner wall scraper 44 can be rotated about the central axis La of the second shaft member 42 as a rotation center. In the illustrated example, at an end of the second shaft member 42 on the bottom 3 </ b> A side, a stopper portion 42 </ b> A protruding to the outer peripheral side is formed. The inclined inner wall scraper 44 is held by the second shaft member 42 by coming into contact with the stopper portion 42A and preventing it from coming off.

  The vertical inner wall scraper 45 is formed in a shape extending along the third shaft member 43, and a hole 45A into which the third shaft member 43 is inserted is formed. By inserting the third shaft member 43 into the hole 45A, the vertical inner wall scraper 45 is rotatable around the central axis Lb of the third shaft member 43 as a rotation center. In the illustrated example, a male screw portion 43A is formed at an end of the third shaft member 43 on the bottom 3A side. The vertical inner wall scraper 45 is held by the third shaft member 43 by coming into contact with a nut 43B screwed to the male screw portion 43A and prevented from coming off.

  Further, the lid inner wall scraper 52 is formed in a shape extending along the fourth shaft member 51, and a hole 52A into which the fourth shaft member 51 is inserted is formed. By inserting the fourth shaft member 51 into the hole 52A, the scraper 52 for the lid inner wall can be rotated about the central axis Lc of the fourth shaft member 51 as a rotation center. In the illustrated example, an external thread 51 </ b> A is formed at the outer end of the fourth shaft member 51. The lid inner wall scraper 52 is held by the fourth shaft member 51 by coming into contact with a nut 52B screwed to the male screw 52A and held off.

  In addition, although it is preferable to form the above-mentioned scraper 44,45,52 from elastic members, such as urethane rubber, for example, the material is not specifically limited.

  The scraper arm 30 rotates the shaft members 42, 43, 51 of the shaft members 41, 43, 51 described above in the circumferential direction of the container 2 around the central axis C1 along the inner wall of the container 2. It is supposed to That is, in the present embodiment, when the scraper arm 30 rotates, the second shaft member 42 rotates in the circumferential direction of the container 2 along the inner wall 3C2 of the second side wall 3B2 of the container body 3 It is supposed to In addition, the third shaft member 43 rotates in the circumferential direction of the container 2 along the inner wall 3C1 of the first side wall 3B1 of the container body 3. Further, the fourth shaft member 51 is configured to rotate in the circumferential direction of the container 2 along the inner wall 4C of the lid member 4.

  The scraper arm 30 can rotate the shaft members 42, 43, 51 to one side and the other side in the circumferential direction of the container 2 by the scraper motor 31. Further, the scraper arm 30 can rotate the shaft members 42, 43 and 51 during the stirring operation of the stirrer 1. That is, the scraper arm 30 can rotate simultaneously with the rotation of the stirring blade 10 and the pulverizing blade 20.

  Then, when the scraper arm 30 rotates, the inclined inner wall scraper 44 rotates in the circumferential direction of the container 2 integrally with the second shaft member 42. In addition, the vertical inner wall scraper 45 rotates in the circumferential direction of the container 2 integrally with the third shaft member 43. Further, the lid inner wall scraper 52 rotates in the circumferential direction of the container 2 integrally with the fourth shaft member 51.

  Here, in the present embodiment, the third shaft member 43 extends in parallel to the central axis C1 along the first side wall 3B1 on which the disintegrating blade 20 is provided. Thereby, the scraper arm 30 releases the vertical inner wall scraper 45 by rotating the third shaft member 43 along the inner wall 3C1 of the first side wall portion 3B1 to one side and the other side in the circumferential direction of the container 2 It is possible to make the powder blade 20 approach and separate. Here, the range of rotation of the scraper arm 30 is limited so that the scraper 45 for the vertical inner wall does not interfere with the dusting blade 20. As means for limiting the rotation range, for example, provision of a stopper member may be mentioned.

  In the illustrated example, the second shaft member 42 and the third shaft member 43 in the first arm portion 40 are integrally formed, while the second shaft member 42 and the third shaft member 43, and the first shaft The member 41 is separably connected. A connection mode will be described. As shown in FIG. 2, a connecting portion 46 is provided at an end portion of the first shaft member 41, and the second shaft member 42 is separably engaged with the connecting portion 46. It is done.

  FIG. 3 is a view showing a connecting portion 46 provided at an end of the first shaft member 41 shown in FIG. 2, and FIG. 3 (A) is a view when viewed along the arrow B direction in FIG. (B) is a cross-sectional view taken along the line C-C of (A). Specifically, the connecting portion 46 is a pair of disc portions 46A, 46A arranged to face each other apart from each other, a locking bar 46B for connecting between the centers of the disc portions 46A, 46A, and a locking bar A support surface is formed parallel to the diametrical direction of the disc portions 46A and 46A at a position away from the outside 46B, and a stopper portion 46C connecting between the disc portions 46A and 46A is provided.

  The connecting portion 46 of the first shaft member 41 is extended so that the support surface of the stopper portion 46C is positioned on the center side of the container 2 with respect to the locking rod 46B and is inclined obliquely downward from the first shaft member 41. It is provided at the end. Further, as shown in FIG. 4A, the end of the second shaft member 42 on the first shaft member 41 side is an end on the side connected to the first shaft member 41 after extending from the outer peripheral surface to the center side An L-shaped notch 42B extending toward the portion is formed.

  When locking the second shaft member 42 to the connecting portion 46 of the first shaft member 41, first, as shown by arrow X in FIG. 4A, locking of the connecting portion 46 in the notch portion 42B. Insert the rod 46B. Next, as shown by arrow Y in FIG. 4B, the first shaft member 41 is moved downward in the axial direction to guide the locking rod 46B to the end of the notch 42B. As a result, as shown in FIG. 4C, the first shaft member 41 is locked to the locking rod 46B. In this state, although the second shaft member 42 attempts to rotate downward around the locking rod 46B, the support surface of the stopper portion 46C of the connecting portion 46 limits the rotation of the second shaft member 42. As a result, the second shaft member 42 is held inclined to a desired angle, and is connected to the first shaft member 41. According to this connection mode, since a separate member such as a bolt is not used, mixing of foreign matter can be prevented.

  FIG. 5 is a view showing the scraper 45 for vertical inner wall of the scrapers attached to the scraper arm 30. As shown in FIG. FIG. 5A is a cross-sectional view taken along the line D-D in FIG. 1, and FIGS. 5B and 5C show the vertical inner wall scraper 45 rotating about the third shaft member 43 as a rotation center. FIG. Hereinafter, the configuration of the vertical inner wall scraper 45 will be described in detail.

  As shown in FIG. 5A, the scraper 45 for the vertical inner wall has a first edge portion 61 and a second edge formed at mutually different positions in the rotational direction centering on the central axis Lb of the third shaft member 43. It has a section 62. More specifically, scraper 45 for the vertical inner wall shown is formed in a triangular shape when viewed along the direction of central axis Lb, and the first edge portion is formed at one of two corner portions of the triangular shape. 61 is formed, and the second edge portion 62 is formed on the other.

  In the vertical inner wall scraper 45, as shown in FIG. 5 (B), the vertical inner wall scraper 45 rotates in one direction (arrow α direction) in the rotation direction about the central axis Lb of the third shaft member 43 as the rotation center. By rotating, the first edge portion 61 contacts the inner wall 3C1 of the first side wall portion 3B1, and the second edge portion 62 is separated from the inner wall 3C1 of the container. Further, as shown in FIG. 5C, the second internal wall scraper 45 is rotated about the central axis Lb of the third shaft member 43 in the other side (the direction of the arrow β) in the rotational direction. The edge portion 62 is in contact with the inner wall 3C1 of the first side wall portion 3B1, and the first edge portion 61 is separated from the inner wall 3C1.

  More specifically, FIG. 5A shows the “neutral state” in which the first edge portion 61 and the second edge portion 62 of the vertical inner wall scraper 45 are not in contact with the inner wall 3C1. From this neutral state, as shown in FIG. 5 (B), when the scraper 45 for vertical inner wall is rotated to one side (the direction of the arrow α) in the rotational direction centering on the central axis Lb of the third shaft member 43. The rotation trajectory T1 of the first edge portion 61 intersects the inner wall 3C1. Further, when the first edge portion 61 contacts the inner wall 3C1, the rotation on one side of the rotation direction is limited.

  Further, as shown in FIG. 5C, a second edge when the vertical inner wall scraper 45 rotates in the other side (the direction of the arrow β) in the rotation direction with the central axis Lb of the third shaft member 43 as the rotation center. The rotation trajectory T2 of the portion 62 intersects the inner wall 3C1. Further, when the second edge portion 62 contacts the inner wall 3C1, the rotation on the other side in the rotation direction is restricted.

  As shown in FIG. 5B, the vertical inner wall scraper 45 has a wall portion extending from the first edge portion 61 to the inside of the container 2 when the first edge portion 61 contacts the inner wall 3C1. It is preferable to form so that an obtuse angle may be made with respect to the tangent of the contact of 1 edge part 61 and inner wall 3C1. Similarly, as shown in FIG. 5C, the vertical inner wall scraper 45 has a wall portion extending from the second edge 62 to the inside of the container 2 when the second edge 62 contacts the inner wall 3C1. It is preferable to form so that an obtuse angle may be made with respect to the tangent of the contact of the 2nd edge part 62 and inner wall 3C1.

  Further, in FIG. 5B, a symbol D2 indicates an inner wall in the radial direction of the container 2 when the first edge portion 61 contacts the inner wall 3C1 and the second edge portion 62 separates from the inner wall 3C1. The distance from 3C1 to the second edge portion 62 is shown. Further, in FIG. 5C, reference numeral D1 denotes an inner wall in the radial direction of the container 2 when the second edge portion 62 contacts the inner wall 3C1 and the first edge portion 61 separates from the inner wall 3C1. The distance from 3C1 to the first edge portion 61 is shown. The distances D1 and D2 are preferably, for example, 4 mm or less.

  Although the details will be described later, when the scraper arm 30 rotates in the counterclockwise direction in FIG. 5B, the first edge portion 61 abuts on the material attached to the inner wall 3C1 positioned in the advancing direction, It can rotate in the direction of the arrow α to contact the inner wall 3C1. As a result, the first edge portion 61 can remove the raw material attached to the inner wall 3C1. When the scraper arm 30 rotates in the clockwise direction in FIG. 5C, the second edge portion 62 abuts on the material attached to the inner wall 3C1 positioned in the advancing direction, and the direction of the arrow β To be in contact with the inner wall 3C1. As a result, the second edge portion 62 can remove the raw material attached to the inner wall 3C1. When the distances D1 and D2 are the above-described dimensional conditions, when the scraper arm 30 rotates, the first edge portion 61 or the second edge portion 62 easily contacts the inner wall 3C1 due to the adhered raw material. In addition, since the thickness of the raw material adhering to an inner wall changes according to the raw material to stir, it is preferable to set distance D1, D2 according to the thickness estimated.

  Each of the inclined inner wall scraper 44 and the lid inner wall scraper 52 has a first edge portion and a second edge portion similar to the above-described vertical scraper. The inclined inner wall scraper 44 and the lid inner wall scraper 52 have the same shape as the vertical inner wall scraper 45 although they are disposed at different positions. Therefore, the detailed description is omitted.

  Next, the operation of the present embodiment will be described with reference to FIG.

  The stirrer 1 of the present embodiment can stir the raw material by charging the raw material into the container body 3 and rotating the stirring blade 10 and the pulverizing blade 20. During such stirring, as shown in FIG. 6A, the raw material M may be attached to the inner wall 3C1 of the first side wall 3B1 of the container body 3. Further, although not shown, the raw material may be attached to the inner wall 3C2 of the second side wall 3B2 and the inner wall 4C of the lid member 4.

  As described above, when the raw material adheres to the inner wall of the container 2, the stirrer 1 of the present embodiment rotates the scraper arm 30 to rotate the shaft members 42, 43 and 51 into the inner wall of the container 2. Along the circumferential direction of the container 2 around the central axis C1. That is, the second shaft member 42 is rotated in the circumferential direction of the container 2 along the inner wall 3C1 of the first side wall 3B1 of the container body 3. Further, the third shaft member 43 is rotated in the circumferential direction of the container 2 along the inner wall 3C1 of the first side wall 3B1 of the container body 3. Further, the fourth shaft member 51 is rotated in the circumferential direction of the container 2 along the inner wall 4C of the lid member 4.

  Thereby, in the first side wall portion 3B1, as shown in FIG. 6B, when the scraper arm 30 rotates in the counterclockwise direction, the first edge portion 61 is positioned on the inner wall 3C1 positioned in the advancing direction. It abuts on the deposited raw material M, and can rotate in the direction of the arrow α to contact the inner wall 3C1. Thereby, the 1st edge part 61 can remove the raw material M adhering to inner wall 3C1 by advancing in the circumferential direction. Also, when the scraper arm 30 rotates in the clockwise direction in FIG. 6C, the second edge portion 62 abuts against the raw material M attached to the inner wall 3C1 positioned in the advancing direction, and the direction of the arrow β To be in contact with the inner wall 3C1. Thereby, the second edge portion 62 can remove the raw material M attached to the inner wall 3C1 by advancing in the circumferential direction.

  In the second side wall portion 3B1, the first edge portion and the second edge portion of the inclined inner wall scraper 44 can remove the raw material attached to the inner wall 3C2 by the same operation as described above. Further, in the lid member 4, the first edge portion and the second edge portion of the lid inner wall scraper 52 can remove the raw material attached to the inner wall 4C by the same operation as described above.

  As described above, in the present embodiment, the first edge portion and the second edge portion of each scraper 44, 45, 52 abut the raw material adhering to the inner wall of the container 2 and rotate around the corresponding axial member by the reaction thereof. Can be in contact with the corresponding inner wall. For this reason, the first edge portion and the second edge portion of each scraper 44, 45, 52 are not strongly pressed against the corresponding inner wall. As a result, wear of the scraper is suppressed even in the case of progressing in contact with the inner wall. On the other hand, since the first edge portion and the second edge portion of each scraper 44, 45, 52 are in contact with the corresponding inner wall, the raw material attached to the inner wall can be effectively removed.

  Moreover, since each scraper 44, 45, 52 is a structure which can be inserted and attached to a shaft member, the number of parts of the member for attachment of each scraper 44, 45, 52 can be restrained small. This facilitates assembly and disassembly.

  In addition, even when each scraper 44, 45, 52 is rotated to one side and the other side in the circumferential direction of the container 2, the first edge portion or the first edge portion is provided if there is a raw material attached in the traveling direction. The second edge can contact the inner wall of the container to remove the deposited material. Thereby, each scraper 44, 45, 52 can effectively remove the deposited material in a wide area. In this case, even if the lid member 4 of the container 2 is not opened to clean the inner wall, the adhered raw material can be sufficiently removed, so that the working efficiency can be improved. In addition, particularly when stirring high pharmacologically active materials in the pharmaceutical field, it is possible to sufficiently remove the adhered materials without opening the lid 4 and manually removing them. It is useful because it is compatible with the removal effect. In addition, since each scraper 44, 45, 52 can remove the raw material attached by the first edge portion or the second edge portion, the abrasion progresses toward the first edge portion side or the second edge portion side. As a result, the life can be extended.

  Therefore, according to the present embodiment, it is possible to suppress the wear of each scraper 44, 45, 52 and to reduce the number of parts for mounting each scraper 44, 45, 52 to a mounting member. The decomposition cleaning can be easily performed while preventing the contamination of the raw materials. And the raw material adhering to the inner wall of the container 2 can be removed effectively.

  Further, in the present embodiment, the first side wall portion 3B1 of the container 2 is provided with a disintegrating blade 20. The third shaft member 43 of the shaft members 42, 43 and 51 extends along the inner wall of the first side wall 3B1 in parallel with the central axis C1 of the container 2, and the scraper arm 30 has a third shaft By rotating the member 43 along the inner wall 3C1 of the first side wall portion 3B1 to one side and the other side in the circumferential direction of the container 2, it is possible to make the scraper 45 for vertical inner wall approach and separate from the disintegrating blade 20 It has become. Here, since the scraper 45 for the vertical inner wall can effectively remove the raw material adhering to the inner wall on both the one side and the other side in the circumferential direction of the container 2, according to the present embodiment, the powder breaking vanes are used. The raw material adhering to the inner wall of the container around 20 can be removed sufficiently.

  Moreover, each scraper 44, 45, 52 of this Embodiment is formed in triangle shape, when it sees along the central axis line of a corresponding axial member. For this reason, the manufacturing cost of each scraper 44, 45, 52 can be suppressed. In addition, the shape of each scraper 44, 45, 52 is not limited to the shape described in the above-mentioned embodiment, and various forms may be adopted. For example, the scraper may be formed in a trapezoidal or rectangular shape.

Second Embodiment
Next, a second embodiment will be described. FIG. 7 is a schematic cross-sectional view of the stirrer 1 ′ according to the present embodiment, and FIG. 8 is a view of the main part of the stirrer along the line E-E of FIG. The same components as in the first embodiment in the present embodiment have the same reference numerals as those in the first embodiment, and the description thereof will be omitted. In the following, differences from the first embodiment will be mainly described.

  In the present embodiment, first, the configuration of the container main body 3 is different from that of the first embodiment. That is, as shown in FIG. 7, the container main body 3 of the present embodiment has a bottom 3A and a side wall 3B having a circular cross section extending upward from the outer peripheral edge of the bottom 3A. 3B is comprised only by the cylindrical part extended along the central axis C1 from the outer periphery of the bottom part 3A.

  In addition, the configuration of the first arm portion 40 of the scraper arm 30 is different from that of the first embodiment. That is, the first arm portion 40 of the present embodiment includes the first shaft member 41 extending in the radial direction of the container 2 from the connecting cylindrical portion 35 and the side wall portion 3B of the container main body 3 from the tip of the first shaft member 41. The second shaft member 42 extends in parallel with the central axis C1 along the inner wall, and includes two shaft members. Among them, the scraper 45 for vertical inner wall is attached to the second shaft member 42 rotatably around the central axis of the second shaft member 43.

  Further, it differs from the first embodiment in that the scraper arm 30 is manually rotated. That is, a housing 70 for accommodating the drive shaft 32 is provided above the lid member 4, and the upper portion of the drive shaft 32 protrudes upward from the housing 70. A handle 71 is provided at a portion of the drive shaft 32 projecting to the outside. The scraper arm 30 is configured to rotate by rotating the handle 71 about the central axis C1.

  Furthermore, as shown in FIGS. 7 and 8, a disc plate 72 projecting outward in the radial direction of the drive shaft 32 is provided below the handle 71 at a portion of the drive shaft 32 that protrudes outward. The plate 72 is further provided with a projecting portion 73 projecting outward in the radial direction. On the other hand, on the upper portion of the housing 70, a stopper portion 74 which restricts the rotation of the drive shaft 32 by coming into contact with the projecting portion 73 is provided. The stopper portion 74 limits the rotation range so that the scraper for vertical inner wall 45 does not interfere with the dusting blade 20 when the scraper arm 30 is manually rotated by coming into contact with the projecting portion 73. There is.

  Also in the stirrer 1 'of the second embodiment as described above, the same function and effect as those of the first embodiment can be obtained.

Third Embodiment
Next, a third embodiment will be described. FIG. 9 is a schematic cross-sectional view of a stirrer 1 ′ ′ according to the present embodiment, FIG. 10 is a cross-sectional view along the line F-F in FIG. 9, and FIG. 11 is a view of the stirrer 1 ′ ′ in FIG. It is a figure explaining operation | movement of a scraper. The same components as in the first and second embodiments of the present embodiment have the same reference numerals as those in the first and second embodiments, and the description thereof will be omitted. In the present embodiment, the shape of the scraper 45 for vertical inner wall is different from the second embodiment.

  In the present embodiment, as shown in FIGS. 9 and 10, a portion of the scraper 45 for the vertical inner wall overlapping at least the direction of the central axis C1 of the container 2 and the rotary shaft portion 21 of the disintegrating blade 20 (FIG. The portion indicated by reference sign Z is narrower than the other portions. Specifically, as shown in FIG. 10, the central axis of the second shaft member 42 is a portion of the vertical inner wall scraper 45 that overlaps the rotary shaft portion 21 of the disintegrating blade 20 in the direction of the central axis C1 of the container 2. The distance between the first edge portion 61 and the second edge portion 62 in the direction of rotation about the center of rotation is smaller than that of the other portions.

  More specifically, scraper 45 for the vertical inner wall according to the present embodiment has a narrow portion 451 including a portion indicated by the symbol Z in the scraper 45 for the vertical inner wall described above, and a wide portion located above the narrow portion 451. And a portion 452. As shown in FIG. 10, each of the narrow portion 451 and the wide portion 452 has a first edge portion 61 and a second edge portion 62. Then, as shown in FIG. 10, the distance between the first edge portion 61 and the second edge portion 62 in the rotational direction about the central axis of the second shaft member 42 of the narrow portion 451 is a wide portion It is smaller than that of 452. In other words, the distance from the central axis of the second shaft member 42 to the first edge 61 of the narrow portion 451 is greater than the distance from the central axis of the second shaft 42 to the first edge 61 of the wide portion 452. It is getting smaller. The distance from the central axis of the second shaft member 42 to the second edge 62 of the narrow portion 451 is smaller than the distance from the central axis of the second shaft 42 to the second edge 62 of the wide portion 452 It has become.

  In the illustrated example, the dimension in the direction of the central axis C1 of the narrow portion 451 is set to a length from the lower end of the rotary shaft portion 21 of the disintegrating blade 20 to a position slightly lower than the upper end of the blade main body 22 There is. The dimension in the direction of the central axis C1 of such a narrow portion 451 may be another aspect.

  Also in the present embodiment, the rotation range is limited so that the scraper 45 for the vertical inner wall does not interfere with the disintegrating blade 20 when the scraper arm 30 is manually rotated. Specifically, the rotation range of the scraper arm 30 is limited to a rotation range smaller than 360 degrees so that the narrow portion 451 does not interfere with the dusting blade 20. Here, in the present embodiment, when the scraper arm 30 is rotated to the maximum rotation position on one side in the circumferential direction of the container 2, the first edge portion 61 of the wide portion 452 is viewed in the direction of the central axis C1. The center axis line S1 of the rotary shaft portion 21 of the disintegrating blade 20 is made to cross from the one side. Further, when the scraper arm 30 is rotated to the other maximum rotational position in the circumferential direction of the container 2, the second edge portion 62 of the wide portion 452 rotates the dusting blade 20 when viewed in the direction of the central axis C1. The central axis S1 of the shaft 21 is to be crossed from the other side (the state shown in FIG. 11). In such a configuration, as shown in FIG. 11, when the vertical inner wall scraper 45 approaches the deflocculation blade 20, a portion other than the portion indicated by the symbol Z of the vertical inner wall scraper 45, that is, The wide portion 452 can remove the raw material attached to the inner wall in a wider area than the portion indicated by the symbol Z. Specifically, in the present embodiment, the raw material to which the wide portion 452 is attached can be removed over the entire circumference of the inner wall of the container 2 located above the narrow portion 451. Therefore, according to the configuration of the present embodiment, the raw material attached to the inner wall of the container 2 can be effectively removed. As a modification, when the scraper arm 30 is rotated to the maximum rotation position on one side of the container 2 in the circumferential direction, the first edge portion 61 of the wide portion 452 is broken up as viewed in the central axis C1 direction. When positioned on the central axis S1 of the rotary shaft portion 21 of the blade 20 and the scraper arm 30 is rotated to the other maximum rotational position in the circumferential direction of the container 2, the wide portion is seen in the central axis C1 direction. The second edge 62 of 452 may be positioned on the central axis S1 of the rotary shaft 21 of the disintegrating blade 20. In addition, the shape of the wide part 42 is not restricted to the aspect of embodiment demonstrated above, and the aspect of the said modification.

  In addition, it is possible to add various change with respect to each embodiment mentioned above. For example, the number and arrangement of the first arm portion 40 and the second arm portion 50 in the scraper arm 30 are not limited to the above-described embodiment.

1,1 ′, 1 ′ ′ Stirrer 2 Container 3 Container body 3A Bottom 3B Side wall 3B1 First side wall 3B2 Second side wall 3C1, 3C2 Inner wall 4 Lid member 4C Inner wall 5 Jacket 10 Stirring blade 11 Stirring blade drive shaft 20 Pulverizing blade 21 Rotary shaft portion 22 Blade main body 23 Drive shaft 24 Chopper motor 30 Scraper arm 31 Scraper motor 32 Drive shaft 32A Tip portion 35 Connecting cylindrical portion 40 First arm portion 41 First shaft member 42 Second shaft member 42A stopper portion 42B notch portion 43 third shaft member 43A male screw portion
44 Scraper 44A for inclined inner wall Hole 45 Scraper 45A for vertical inner wall 451 Narrow part 452 Wide part 46 Connecting part 46A Disc part 46B Locking rod 46C Stopper part 50 Second arm part 51 Fourth shaft member 51A Male thread 52 Scraper 52A for lid inner wall Hole 61 first edge portion 62 second edge portion C1 center axis line La of second axis member center axis line Lb third axis member center axis line Lc third axis member center axis line Lc fourth axis member center axis lines T1, T2 rotation locus D1, D2 distance

Claims (5)

It is a stirrer which stirs the raw material thrown in in the container, Comprising:
A scraper arm having a shaft member extending along the inner wall of the container;
And a scraper rotatably mounted on the shaft member,
The scraper arm is configured to rotate the shaft member along the inner wall of the container in the circumferential direction of the container about the central axis of the container as a rotation center.
The scraper has a first edge portion and a second edge portion which are formed at mutually different positions in the rotational direction about the central axis of the shaft member.
The first edge portion contacts the inner wall of the container by rotating the scraper to one side in the rotational direction about the central axis of the shaft member, and the second edge portion of the container It is separated from the inner wall,
The second edge portion contacts the inner wall of the container by rotating the scraper to the other side in the direction of rotation about the central axis of the shaft member, and the first edge portion of the container It is separated from the inner wall,
The scraper arm is capable of rotating the shaft member to one side and the other side in the circumferential direction of the container,
The container has a side wall with a circular cross section, and the side wall is provided with a disintegrating blade,
The shaft member extends along the inner wall of the side wall in parallel with the central axis of the container,
The scraper arm can move the scraper toward and away from the deflocculation blade by rotating the shaft member along the inner wall of the side wall to one side and the other side in the circumferential direction of the container. It has become a stirrer. The disintegrating blade has a rotary shaft portion projecting from the side wall portion into the interior of the container, and a blade main body fixed to the rotary shaft portion at a position separated from the side wall portion in the radial direction of the container. Yes,
Of the scrapers, at least a portion overlapping the rotary shaft portion in the central axis direction of the container is a portion of the first edge portion and the second edge portion in the rotational direction about the central axis of the shaft member. The stirrer according to claim 1 , wherein the distance between them is smaller than that of the other parts. The scraper arm, during stirring operation of the agitator, it is possible to rotate the shaft member, agitator according to claim 1 or 2. When viewed along the central axis direction of the shaft member, the scraper is formed in a triangular shape, the first edge portion is formed in one of two triangular corner portions, and the other is formed in the other. The stirrer according to any one of claims 1 to 3 , wherein two edges are formed. A method of operating a stirrer according to any one of claims 1 to 4 , wherein
Stirring the raw material introduced into the container;
Rotating the scraper in the circumferential direction of the container by rotating the shaft member in the circumferential direction about the central axis of the container along the inner wall of the container by the scraper arm , How to operate the stirrer.

Images