JP2015139713A - Agitator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an agitator where scattering outward can be reduced by enhancing the taking amount of an object to be agitated, agitation in a state of the small entrained amount of air can be performed and extremely efficient mixing agitation can be achieved.SOLUTION: In an agitator 1 provided with a rotation device, a rotation shaft 3 made of a freely removable rod-like member and agitation blades at the tip of the rotation shaft 3, the agitation blades include first bending members being bent with linear members and having small rotation loci inside and second bending members having large rotation loci outside. The first bending members are the linear members bent to be substantially U-shaped and projected outward from a first tip side base part 6 of the rotation shaft 3 to a second tip side base part 11 at equal intervals, and the second bending members are the linear members bent to be substantially half-split elliptical outer shaped and projected outward from a third tip side base part 13 of the rotation shaft 3 to a fourth tip side base part 15 at equal intervals from positions between the first bending members. The projection dimension of the outer tips of the second bending members is larger than that of the bent outer parts of the first bending members.

Description

  The present invention relates to a stirring blade that rotates in order to knead and knead a mixture of powder or granular material such as mortar, resin, clay, etc. used in a filler such as a sleeve-like connector and injection material, and water. It is related with the stirrer provided with.

  As shown in FIG. 3, a conventional stirrer for mixing and stirring powders and granules such as mortar material is provided with a rotating shaft A in the vertical direction of the case B, and has a spiral shape on the side surface of the rotating shaft A. The rotating shaft A is rotated by a rotating device such as a motor with a structure in which the stirring blade C is projected, and the granular material charged into the case B is rotated by the spiral stirring blade C. The mixture is mixed and stirred by moving up and down in the case B.

4, the rotation axis D is arranged in the vertical direction in the powder body accommodating case E, and is rotated at an appropriate rotation speed by the driving device F. A stirring member G protrudes from the side surface of the rotating shaft D, and the stirring member G is used for stirring and mixing the powder and is composed of a plurality of rod-shaped bodies H, each of which is the powder storage case E. It is formed so as to face the inner peripheral surface. By configuring the stirring member G with a plurality of rod-shaped bodies H, the powder particles on the path of the rod-shaped bodies H are pushed up by the passage and mixed with the powder particles on the top. After passing through the rod-shaped body H, it quickly descends and mixes with the lower granular material, and efficient mixing and stirring can be performed.
A scraping bar I is provided at the tip of the rod-like body H. This scraping bar I passes through the vicinity of the inner surface of the granular material housing case E by rotation, thereby scraping and collecting the granular material staying in the vicinity of the inner surface of the case E and collecting it on the center side of the case. For mixing. The scraping bar I is formed in an elongated flat plate shape, and is provided along the vertical direction of the rotation axis D.
Since the rod-like body H protrudes spirally at a substantially constant angle along the rotation axis D, the powder body is effectively pushed up and lowered and can be sufficiently mixed and stirred. In addition, since the scraping bar I is provided at the tip of the rod-like body H, the powder body near the inner surface of the powder body housing case E, which tends to be insufficiently mixed due to adhesion of the powder body, etc., is also ensured. Can be mixed and stirred.

Further, as described in Document 2 below, the mixer rotary blade J is composed of an attaching / detaching portion K and a blade L configured integrally with the attaching / detaching portion K. The attaching / detaching portion K has a pipe shape, It has a cylindrical inner space.
The blade L is formed into a substantially square shape by bending a rod-like body into a two-dimensional plane, and the left and right parts of this substantially square form scraping portions M and N that scrape high-viscosity substances from the inner wall surface of the container. The scraping portions M and N are located differently in the vertical direction of the substantially square blade L. On the left side of the blade L, the upper part is recessed toward the rotation center O, and the lower part is located outward from the rotation center O to constitute a scraping portion M. On the other hand, the right side of the blade L is opposite to the left side, the upper portion is located outward from the rotation center O to form a scraping portion N, and the lower portion is recessed toward the rotation center O side.
The scraping portions M and N alternately scrape the clay from the inner wall surface of the container, and the hollow portions without the scraping portions M and N leave the clay on the inner wall portion of the container, so that the clay does not become a lump. Therefore, by using the rotating blade J for the mixer, the kneaded material can be uniformly kneaded without lump.

  However, in the spiral stirring blade C, since the granular material moves up and down while riding on the helical stirring blade C, the granular material on the stirring blade C and the granular material around the stirring blade C However, there was a drawback that the mixture was not sufficiently mixed.

  Further, the stirring member G composed of the plurality of rod-like bodies H and the scraping bar I at the tip thereof has only one kind of rotation locus, so even if the rotational speed is changed, the stirring member G is always at a uniform fixed position. Only mixing and stirring was possible, and time was required to achieve the predetermined mixing and stirring effect.

  Furthermore, a blade is provided on the rotation center side above one scraping portion M, and the blade whose upper side of the other scraping portion N is located outward from the rotation center is a lump for the object to be stirred. Although it can be uniformly kneaded without forming, the rotation trajectories of the scraping portions M and N share the upper and lower portions, and there is no overlapping portion, as in the container in which the stirring blade of the cited document 2 is used. If the rotation trajectory matches the size of the container, a certain effect will be produced, but if the container is larger than the stirring blade, the object to be stirred will escape to the outside and the mixing and stirring efficiency will be reduced. Become.

Japanese Patent Laid-Open No. 08-257382 JP 09-248435 A

  The present invention solves the above-described drawbacks, and even when mixing or stirring the stirring object placed in a large container as compared with the stirring blade, it is possible to take in the stirring object even if the mixing stirring is small. The present invention relates to a stirrer capable of mixing and stirring extremely efficiently, which can reduce the scattering to the outside and reduce the amount of air entrained.

  In a stirrer provided with a rotating shaft composed of a rod-shaped member that can be attached to and detached from a rotating device, and a stirring blade at the tip of the rotating shaft, the stirring blade has a small rotation trajectory inside the bent linear member. The first bending member is composed of one bending member and a second bending member having a large rotation locus on the outside, and the first bending member is outwardly spaced from the first tip side base portion of the rotating shaft to the second tip side base portion at equal intervals. A linear member that is bent into a substantially U-shape is projected, and the second bent member is equidistant from a position between the first bent members from a third tip side base portion to a fourth tip side base portion of the rotating shaft. The outer end of the second bent member is bent from the outer bent portion of the first bent member. It is characterized by a stirrer having a large protruding dimension.

  In addition, the first bending member is characterized by a stirrer that protrudes outward at equal intervals at an angle of approximately 90 degrees in the circumferential direction of the rotating shaft.

  Further, the second bending member protrudes outward at equal intervals at approximately 90 degrees in the circumferential direction of the rotating shaft and from the two adjacent first bending members at equal intervals. Characterized by a stirrer.

  Moreover, the dimension between the 1st, 2nd front end side base parts of a 1st bending member is characterized by the agitator made larger than the dimension between the 3rd, 4th front end side base parts of a 2nd bending member.

  Furthermore, the total of the projecting dimensions outward from the rotation shaft of each of the first bending member and the other first bending member at a position facing the rotation shaft is the first of the first bending member, It features a stirrer that is larger than the dimension between the second tip side bases.

  The stirrer of the present invention uses a stirring blade formed into two different shapes by a bent linear member, and a stirring object to be a mixture based on powder or granules put in a large container. Thus, even when the stirring blade is rotating at high speed, it can be captured without splashing outward, and mixing and stirring can be performed efficiently.

  In addition, since the stirring blade made of a linear member is formed in a dimension that is long in the lateral direction, it is possible to mix and stir the object to be stirred with a small amount, and at the time of stirring as compared with the stirring blade that is long in the vertical direction. It became possible to reduce the amount of air entrained.

  Furthermore, since two types of stirring blades having different rotation trajectories are formed, an object to be stirred that cannot be caught by the stirring blades of one rotation trajectory and escapes in the vertical direction and the outward direction is stirred by the stirring blade of the other rotation trajectory. This makes it possible to mix and stir at twice the speed of conventional stirrers.

The perspective view of the stirrer of this invention. The side view of the stirring blade used as the front-end | tip of the stirrer of this invention. The perspective view of the conventional stirrer. Sectional drawing of the conventional stirrer. The front view of the conventional stirring blade.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view of a stirrer, in which a rotating device 2 having a motor is provided on a gripping tool side which is a hand, and a rotating shaft 3 made of a rod-shaped member can be detachably attached to the rotating device 2. A chuck mechanism is provided, and first and second stirring blades 4 and 5 having different shapes are provided at the tip of the rotary shaft 3.

  On the base end side of the rotary shaft 3 made of a rod-shaped member mounted on the chuck mechanism, the three surfaces are formed with irregularities by milling so as to increase the frictional force in the rotational direction. Further, the rod-like member can be appropriately selected from any of a polygonal shape such as a circle, an ellipse, a triangle, a quadrangle, a pentagon, and a hexagon as a cross-sectional shape.

  The first bent member to be the first stirring blade 4 is a bent linear member made of a rod-like body, one end of which is fixed to the first tip side base 6 of the rotating shaft 3 by welding or the like, and the front side (For convenience, the front end side of the rotary shaft 3 is referred to as the front side) and is linearly extended outward for a predetermined length to form a first protruding stirring rod 7, and the front end of the rotary shaft 3 is parallel to the rotary shaft 3. Bending and extending from the portion 8 to the front side to form a side agitating bowl 9, inclined to the rear side from the second bent section 10 at the tip to the second tip side base 11, The second protruding stirring rod 12 is substantially parallel, and is fixed to the rotary shaft 3 by welding or the like at the second tip side base portion 11. A dimension H1 between the first and second tip side bases 6 and 11 is formed longer than a member dimension H2 of the side agitator 9.

  As described above, the first stirring blade 4 is formed as a substantially U-shaped bent member made of a linear member having a slightly short dimension at the tip side protruding outward, and in the circumferential direction of the rotary shaft 3. The first agitating blades 4 are formed so as to protrude from the periphery of the first tip side base portion 6 of the rotating shaft 3 approximately every 90 degrees, and have four identically shaped first stirring blades 4 at regular intervals every 90 degrees as the first bending member. Provided.

  On the other hand, the 2nd bending member used as the 2nd stirring blade 5 is what bent the linear member which consists of a rod-like body, and the end is fixed to the 3rd tip side base 13 of rotating shaft 3 by welding etc., Further, the fixing position is a position shifted from the first tip side base 6 of the first stirring blade 4 by the dimension H3 to the front side of the rotating shaft 3.

  The second bent member extends from the third distal end side base portion 13 to the outside and to the front side by a predetermined length in a substantially straight line, and the third bent portion has an arc shape at the forefront. 14 is further extended in a gently curved shape toward the fourth tip side base 15 and fixed to the rotary shaft 3 by welding or the like at the fourth tip side base 15. As a whole, a bent linear member forming a substantially half-elliptical outer shape is formed. The second tip side base portion 11 and the fourth tip side base portion 15 have a distance of a dimension H4, and the fourth tip side base portion 15 is at the rear side position.

  The dimension H5 between the third and fourth tip side bases 13 and 15 is shorter than the dimension H1 between the first and second tip side bases 6 and 11, and the third tip side base 13 is the first dimension. Located on the front side of the distal end side base portion 6, the fourth distal end side base portion 15 is fixed so as to be positioned on the rear side of the second distal end side base portion 11. Accordingly, the third and fourth tip side bases 13 and 15 are both located inside the first and second tip side bases 6 and 11.

  The second agitating blade 5 is disposed between the first agitating blades 4, and the protruding direction thereof is approximately 45 degrees away from the protruding direction of the first agitating blade 4 in the circumferential direction of the rotary shaft 3. It is fixed at the position. Therefore, the 2nd stirring blade 5 of the same shape is being fixed to this rotating shaft 3 at equal intervals as 4nd bending members.

  The dimension W1 from the first and second tip side bases 6 and 11 of the first bending member to be the first stirring blade 4 to the outside of the side stirring rod 9 is the second folding to be the second stirring blade 5. The dimension is shorter than the dimension W2 from the third and fourth tip side base portions 13 and 15 of the bending member to the outermost portion of the third bent portion 14.

  Due to the shape described above, the rotation locus of the first stirring blade 4 interlocked with the rotation of the rotating shaft 3 is a small rotation locus in a plane as compared with the rotation locus of the second stirring blade 5. On the other hand, the rotation of the first stirring blade 4 rotates with a large width in the front-rear direction (vertical direction during mixing stirring), and the second stirring blade 5 rotates with a small rotation width in the front-rear direction. Due to the difference in the rotation trajectory, the mixture based on the powder or the granule is sufficiently kneaded and kneaded.

  For example, the dimension H2 between the tips of the first and second protruding stirring rods 7 and 12 of the first stirring blade 4 and the dimension H1 between the first and second tip-side bases 6 and 11 close to the second stirring blade 5 Since the dimension is longer than the dimension H5 between the third and fourth tip side bases 13 and 15, the second agitating blade 5 can be sufficiently mixed and agitated with a small rotation width and cannot be caught. The to-be-stirred object that escapes to the front side or the rear side (vertical direction at the time of mixing and stirring) with respect to the rotating shaft 3 is caught by the linear members of the first and second protruding stirring rods 7 and 12 of the first stirring blade 4 It became possible.

  On the other hand, the dimension W2 from the third and fourth tip side base portions 13 and 15 of the second stirring blade 5 to the outermost portion of the third bent portion 14 is the first and second tip side of the first stirring blade 4. Since the dimension is longer than the dimension W1 from the bases 6 and 11 to the outside of the side agitator 9, the object to be agitated that cannot be caught by the first agitating blade 4 and has escaped in the outward direction is second. It became possible to catch with the linear member of the 3rd bending part 14 of the stirring blade 5. FIG.

  In addition, the dimension W1 from the first and second tip side bases 6 and 11 to the outside of the side agitator 9 and other side agitators at positions opposed to the side agitator 9 and the rotary shaft 3 are provided. The dimension (W1 + W1) combined with the dimension W1 up to 9 is longer than the dimension H1 between the first and second tip side bases 6 and 11, and similarly, the third and fourth tip side bases 13 are set. 15 to the outermost portion of the third bent portion 14 is formed to be longer than the dimension H5 between the third and fourth tip side base portions 13 and 15.

  As described above, even an object to be stirred with a small amount put into the container and having a shallow depth can be sufficiently mixed and stirred by the first and second stirring blades 4 and 5 that are long in the lateral direction. At the same time, the amount of air involved in the stirring can be reduced. In recent years, the weight of the items containing the material to be agitated has been reduced from the conventional 25 kg / 1 bag to 15-18 kg / 1 bag in consideration of its transportation and usability. Therefore, it is possible to provide a stirrer suitable for the current situation in which the amount of mixing and stirring of the objects to be stirred per bag is reduced.

DESCRIPTION OF SYMBOLS 1 Stirrer 2 Rotating device 3 Rotating shaft 4 1st stirring blade 5 2nd stirring blade 6 1st front end side base 7 1st protrusion stirring bowl 8 1st bending part 9 Side stirring bowl 10 2nd bending part 11 1st 2 tip side base portion 12 second protruding stirring rod 13 third tip side base portion 14 third bent portion 15 fourth tip side base portion

Claims (5)

  In a stirrer provided with a rotating shaft composed of a rod-shaped member that can be attached to and detached from a rotating device, and a stirring blade at the tip of the rotating shaft, the stirring blade has a small rotation trajectory inside the bent linear member. The first bending member is composed of one bending member and a second bending member having a large rotation locus on the outside, and the first bending member is outwardly spaced from the first tip side base portion of the rotating shaft to the second tip side base portion at equal intervals. A linear member that is bent into a substantially U-shape is projected, and the second bent member is equidistant from a position between the first bent members from a third tip side base portion to a fourth tip side base portion of the rotating shaft. The outer end of the second bent member is bent from the outer bent portion of the first bent member. A stirrer characterized in that the protruding dimension is increased.   The stirrer according to claim 1, wherein the first bending member protrudes outward at equal intervals at an angle of approximately 90 degrees in the circumferential direction of the rotating shaft.   The second bent members protrude outward at equal intervals from the two adjacent first bent members at equal intervals of about 90 degrees in the circumferential direction of the rotating shaft. The stirrer according to claim 1 or 2.   The dimension between the 1st, 2nd front end side base parts of a 1st bending member was made larger than the dimension between the 3rd, 4th front end side base parts of a 2nd bending member, The Claim 1 thru | or 3 characterized by the above-mentioned. Any of the stirrers.   The sum of the outward projecting dimensions of the first bent member and the other first bent members at positions opposite to the rotary shaft from the rotary shaft is the first and second of the first bent member. The stirrer according to any one of claims 1 to 4, wherein the stirrer is larger than a dimension between the front end side base portions.

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