Stirring device, stirring method, and cleaning method of stirring device

Abstract

To provide a stirring device, a stirring method, and a cleaning method of the stirring device capable of uniformly stirring and mixing the whole even if viscosity of a product generated by stirring and mixing in a mixing container is high.SOLUTION: A raw material consisting of cement as a powder raw material and water as a liquid raw material and a stirring lump 120 having a specific gravity larger than that of the raw material are stored in a mixing container 110. A mixing container rotating portion 130 rotates the mixing container 110 storing the raw material and the stirring lump 120 around an inclined axial center.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an agitation device, an agitation method, and a method for cleaning an agitation device, and more particularly to an agitation device, an agitation method, and a method for cleaning an agitation device that agitates and mixes raw materials consisting of powder raw materials and liquid raw materials in a cylindrical mixing vessel to produce a highly viscous product. [Background technology]

[0002] BACKGROUND ART Conventionally, concrete, which is one of the construction materials, is produced by stirring and mixing a mixture of water, cement, and various admixtures using a mixing device such as a mixer (see, for example, Patent Document 1).

[0003] FIG. 7 is a diagram showing the mixing device disclosed in Patent Document 1. As shown in Figure 7, the mixing device 10 disclosed in Patent Document 1 comprises a cylindrical mixing vessel 11 with a bottom into which the raw materials for the concrete to be produced are poured, a rotating shaft 12 that is rotatable relative to the mixing vessel 11 and extends in the vertical axial direction from the center of the bottom, a rotation drive unit 13 that rotates the rotating shaft 12, and a plurality of mixing blades 14 fixed to the rotating shaft 12, the mixing blades 14 being configured in a flat plate shape, and the flat surface of the mixing blades 14 is oriented in the direction of rotation of the rotating shaft 12 within the mixing vessel 11.

[0004] In the mixing device 10 disclosed in Patent Document 1, the raw materials for concrete are charged into a mixing container 11, and the raw materials are mixed and stirred within the mixing container 11 by rotating a mixing blade 14 around a rotation axis 12 within the mixing container 11. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2002-240028 Summary of the Invention [Problem to be solved by the invention]

[0006] However, the mixing device 10 disclosed in Patent Document 1 has a problem in that if the product produced by stirring and mixing in the mixing container 11 has high viscosity, the raw materials being stirred in the mixing container 11 cannot be stirred and mixed uniformly throughout.

[0007] For example, grout such as non-shrink mortar has high strength after hardening because it does not shrink. However, because grout has high viscosity, the mixer 10 disclosed in Patent Document 1 cannot mix the raw materials uniformly in their entirety when mixing them in a mixing container.

[0008] Specifically, in the mixing device 10 disclosed in Patent Document 1, the flat surface portion of the agitator blade 14 in the mixing container 11 is oriented in the direction of rotation of the rotating shaft 12, so that a force is always applied in a fixed direction on the rotation direction side of the flat surface portion of the agitator blade 14 during rotation.

[0009] As a result, the highly viscous grout raw materials stick to the flat surfaces of the agitator blades 14, making it difficult for the raw materials to move. This results in a difference in concentration between the product around the flat surfaces of the agitator blades 14 and the product in other areas. This means that the raw materials cannot be uniformly agitated and mixed throughout the mixing vessel 11.

[0010] Grouts such as non-shrinkage mortar are strong, so they are used to fill important areas that require strength, such as gaps in the column-beam joints of precast concrete structures used in building large reinforced concrete structures.

[0011] For this reason, grout materials must have the appropriate viscosity and fluidity to ensure reliable injection into the filling area. To ensure this appropriate viscosity, it is necessary to predict the temperature at which the grout will be mixed, taking into account the outside air temperature at the time of injection, and to set the water-cement ratio so that the required sulfurization time is achieved.

[0012] Even if the raw materials are placed in a mixing vessel with an appropriately set water-cement ratio, unless the raw materials are mixed uniformly, the water-cement ratio of the produced grout will differ depending on the location of the grout produced in the mixing vessel, such as the grout being concentrated around the flat surface of the mixing blade 14.

[0013] For example, if the raw materials in the mixing vessel 11 are not mixed uniformly, the resulting grout will not have the required viscosity and will not be usable as a grout material.

[0014] Furthermore, if a grout material that does not meet the required appropriate viscosity is used, it may cause poor bonding in the precast concrete structure, which could lead to the collapse of the structure in the event of an earthquake. For this reason, it is extremely important to mix all of the raw materials uniformly.

[0015] Therefore, when the mixing device 10 disclosed in Patent Document 1 is used to uniformly mix and mix the raw materials throughout the mixing container 11, one possible method is to stop the rotating mixing blades 14, peel off the raw materials adhering to the flat surfaces of the mixing blades 14 using a spatula or by hand, and then rotate the mixing blades 14 again.

[0016] Although it may be possible to uniformly mix the raw materials throughout the mixing vessel 11 by stopping the stirring blades 14 and repeating the process of peeling off the raw materials adhering to the flat surface multiple times, this would take a very long time.

[0017] Furthermore, if a spatula or hand is inserted into the mixing device 10 in an attempt to peel off raw materials adhering to the flat surface while the rotation of the stirring blades 14 has not been completely stopped, the spatula or hand may get caught in the rotating stirring blades 14, which is extremely dangerous.

[0018] To prevent the raw materials from sticking to the flat surface of the agitator blade, one side of the flat surface of the agitator blade is fixed to a rotating shaft facing the bottom of the mixing vessel, and the rotating shaft is rotated by a rotary drive device.

[0019] However, if one side of the flat surface of the stirring blade faces the bottom of the mixing vessel, the resistance of the stirring blade in the direction of rotation is small, making it impossible to stir and mix the raw materials uniformly throughout the mixing vessel.

[0020] In order to uniformly mix the raw materials throughout the mixing vessel with a stirring blade with one side of its flat surface facing the bottom of the mixing vessel, one possible method is to move the stirring blade up and down multiple times while rotating it.

[0021] However, even with this method of uniformly stirring and mixing the raw materials throughout the mixing vessel using a stirring blade with one side of its flat surface facing the bottom of the mixing vessel, there is a problem in that it takes a very long time to uniformly stir and mix the raw materials throughout the mixing vessel, because the area of ​​the flat surface of the stirring blade cannot be made larger than a certain limit.

[0022] For example, if the area of ​​the flat surface of the stirring blade is increased in an attempt to stir and mix the raw materials uniformly throughout the mixing container in a short amount of time, when the stirring blade is raised, the raw materials will be pushed up and overflow from the mixing container.

[0023] Therefore, currently, when mixing raw materials in a mixing container with a mixing blade with one flat side facing the bottom of the mixing container, the raw materials are placed in a pail of about 20 liters, for example, and a mixing blade that is small enough compared to the inner diameter of the pail is rotated with a hand mixer, and the rotating mixing blade is moved up and down inside the mixing container to mix and mix the raw materials.

[0024] For example, even if the mixing blades are enlarged with one flat side facing the bottom of the mixing vessel, the raw materials being mixed may not overflow from the mixing vessel by reducing the amount of raw materials being put into the mixing vessel. However, reducing the amount of raw materials will reduce the amount of grout produced.

[0025] In reality, on construction sites, 100 bags of powdered raw material cement, each weighing 25 kg, are sometimes used per day, so if the amount of grout produced is small, the supply of grout cannot keep up, causing construction delays.

[0026] The present invention has been made in consideration of these points, and aims to provide an agitation device, an agitation method, and a method for cleaning an agitation device that are capable of agitating and mixing the entire product uniformly even if the product produced by agitating and mixing in a mixing container has a high viscosity. [Means for solving the problem]

[0027] In order to solve the above problems, the present invention provides an agitation device that agitates and mixes raw materials consisting of powder raw materials and liquid raw materials in a cylindrical mixing vessel to produce a highly viscous product, characterized by comprising: an agitation mass that has a higher specific gravity than the raw materials and is contained in the mixing vessel together with the raw materials; and a mixing vessel rotation unit that rotates the mixing vessel around an inclined axis. As a result, the raw materials and the agitated mass having a larger specific gravity than the raw materials are contained in the mixing vessel, and the mixing vessel rotation unit rotates the mixing vessel around the inclined axis.

[0028] The present invention also provides a stirring method for producing a highly viscous product by stirring and mixing raw materials consisting of powdered raw materials and liquid raw materials in a cylindrical mixing vessel, the stirring method comprising the steps of: placing a stirring mass having a larger specific gravity than the raw materials in the mixing vessel together with the raw materials; and rotating the mixing vessel around an inclined axis by a mixing vessel rotation unit. As a result, the raw materials and the agitated mass having a larger specific gravity than the raw materials are contained in the mixing vessel, and the mixing vessel rotation unit rotates the mixing vessel around the inclined axis.

[0029] The present invention also provides a cleaning method for an agitation device that produces a highly viscous product by agitating and mixing the raw materials in a cylindrical mixing container together with raw materials consisting of powdered raw materials and liquid raw materials, an agitated mass having a higher specific gravity than the raw materials, a mixing container rotation unit that rotates the mixing container around its axis, and an axis angle change unit that tilts the axis of the mixing container rotated by the mixing container rotation unit, the cleaning method comprising the steps of: placing a cleaning liquid and the agitated mass in the mixing container after the highly viscous product has been discharged; and rotating the mixing container by the mixing container rotation unit around the tilted axis. As a result, the washing liquid and the agitated mass are contained in the mixing vessel after the highly viscous product has been discharged, and the mixing vessel is rotated around the inclined axis by the mixing vessel rotating part. [Effects of the Invention]

[0030] According to the stirring device, stirring method, and stirring device cleaning method of the present invention, the raw materials and the stirring mass having a larger specific gravity than the raw materials are contained in the mixing container, and the mixing container rotation part rotates the mixing container around the inclined axis, thereby achieving the following effects:

[0031] Since the mixing vessel containing the raw materials and the mass to be stirred is rotated by the mixing vessel rotating part around the inclined axis, the direction of the rotation axis of the mixing vessel and the horizontal direction do not intersect at right angles. As a result, the raw materials in the rotating mixing vessel move in a vortex along the direction of rotation of the mixing vessel. The agitated mass in the mixing vessel also rotates in a vortex along the direction of rotation of the mixing vessel due to the resistance of the raw materials and the weight of the agitated mass, and the raw materials and agitated mass in the mixing vessel are agitated.

[0032] Since the agitated mass has a greater specific gravity than the raw materials, it moves downward before the raw materials in the mixing vessel, accelerating agitation within the mixing vessel. The agitated mass that moves downward in the mixing vessel is carried along by the vortex of the agitated raw materials, and moves while rotating up and down and left and right. This further accelerates agitation within the mixing vessel.

[0033] Furthermore, as the agitated mass moves inside the mixing vessel while rotating up and down and left and right, it moves inside the mixing vessel while coming into contact with the mixing vessel. This causes raw materials adhering to the inner circumferential surface of the mixing vessel or the circumferential surface of the agitated mass to peel off. The peeled raw materials are stirred by the agitated mass moving inside the mixing vessel, and the inside of the mixing vessel is stirred and mixed uniformly. As a result, the stirring device and stirring method of the present invention make it possible to stir and mix the entire product uniformly even if the product produced by stirring and mixing in the mixing container has a high viscosity. [Brief explanation of the drawings]

[0034] [Figure 1] 1 is a front view showing a stirring device according to an embodiment of the present invention. [Figure 2] FIG. 10 is a side view showing the mixing container tilted by the axis angle changing unit. [Figure 3] FIG. 1 is a perspective view showing a state in which agitation masses are contained in an inclined mixing container. [Figure 4] FIG. 1 is a side view showing a state in which raw materials and agitation masses are contained in an inclined mixing vessel. [Figure 5] FIG. 1 is a perspective view showing the process of producing a product using a mixing vessel containing raw materials and agitated masses. [Figure 6] FIG. 10 is a perspective view showing a state in which a sealing lid for reducing the pressure in the internal space of the mixing container closes the opening. [Figure 7] FIG. 1 is a diagram showing a mixing device disclosed in Patent Document 1. DETAILED DESCRIPTION OF THE INVENTION

[0035] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a front view showing the stirring device according to the present embodiment. As shown in FIG. 1, the mixing device 100 is a device for mixing and stirring raw materials consisting of powder raw materials and liquid raw materials inside to produce a highly viscous product, for example, a grout material such as non-shrinkage mortar to be filled in column-beam joints in precast concrete structures.

[0036] The mixing device 100 of this embodiment will be described below as a device that produces a highly viscous product, grout, by mixing and stirring raw materials consisting of cement, which is a powder raw material, and water, which is a liquid raw material, inside the device, but the mixing device 100 can also produce other highly viscous products.

[0037] The agitator 100 includes a mixing vessel 110 , an agitation mass 120 , a mixing vessel rotating unit 130 , an axis angle changing unit 140 , and a stand unit 150 . Mixing vessel 110 is made of steel and has a cylindrical shape with an opening 111 at the top end, and a lower shaft 112 provided at the center of the outside of the bottom surface is rotatably supported by mixing vessel rotating part 130. The inner peripheral surface of mixing vessel 110 is formed as a smooth curved surface or flat surface without any protrusions or the like.

[0038] In this embodiment, the mixing vessel 110 is described as being cylindrical with an open top, but other shapes are possible as long as the mixing vessel 110 can accommodate raw materials therein and the mixing vessel rotation unit 130 can rotate.

[0039] The agitated mass 120 is a mass that is contained in the mixing vessel 110 together with cement and water, which are raw materials for the grout material. It is preferable that the agitated mass 120 has a larger specific gravity than the raw materials.

[0040] Specifically, the stirring block 120 is made of a metal body that is a metallic sphere. In addition, the stirring block 120 can be a metallic ellipsoid, polyhedron, a combination of these, or other shapes. In addition, the material of the stirring block 120 is not limited to metal, and other materials can be selected as long as they have a specific gravity greater than that of the raw material.

[0041] Furthermore, it is preferable that a plurality of agitation blocks 120 are accommodated in the mixing vessel 110 together with the raw materials, but it is also possible to accommodate a single agitation block 120 in the mixing vessel 110 together with the raw materials.

[0042] In addition, when the number of stirred blocks 120 contained in the mixing vessel 110 together with the raw materials is multiple, it is preferable that the outer diameter of the stirred block 120 be smaller than half the inner diameter of the mixing vessel 110, which is formed into a cylindrical body, since the stirred block 120 is allowed to move freely inside the mixing vessel 110.

[0043] For example, if the mixing vessel 110 is large enough to accommodate a volume of 120 to 140 L and has an inner diameter of 500 mm to 600 mm, the outer diameter of the agitated mass 120 is preferably 250 mm to 300 mm. More preferably, a plurality of agitated masses 120 with an outer diameter of 100 mm to 150 mm are accommodated in the mixing vessel 110 together with the raw materials.

[0044] The mixing container rotation unit 130 is used to rotate the mixing container 110, which is rotatably supported by the lower shaft 112, around the axis G, and the mixing container 110 is rotated around the axis G by the rotation drive of the mixing container rotation motor 131.

[0045] Specifically, mixing vessel 110 is driven to rotate by mixing vessel rotation motor 131 transmitting a rotational force about axis G to lower shaft 112. It is preferable to use mixing vessel rotation motor 131 that can rotate in both positive and negative directions in order to rotate mixing vessel 110 in both positive and negative directions, but a mechanism that can reverse the direction of rotation in both positive and negative directions can also be provided between mixing vessel rotation motor 131 and mixing vessel 110. Furthermore, mixing vessel rotation motor 131 and mixing vessel 110 can also be connected by a belt and pulley structure or a gear structure.

[0046] In addition, the mixing container rotation motor 131 provided in the mixing container rotation unit 130 can change the rotation speed of the mixing container 110 depending on the degree of viscosity of the raw materials contained in the mixing container 110 and the degree of viscosity of the product to be produced.

[0047] The axial center angle changing unit 140 is used to change the angle of the axial center G of the mixing container 110 rotated by the mixing container rotating unit 130 to any angle, and is equipped with an axial center support unit 141, an axial center angle changing motor 142, and a rotating support shaft unit 143.

[0048] The shaft center support part 141 is connected to the mixing container 110 via the lower shaft 112, and the mixing container 110 connected to the shaft center support part 141 via the lower shaft 112 is supported by the stand part 150 via the rotating support shaft part 143 so that it can rotate freely in the forward and backward directions.

[0049] In the stirring device 100 of this embodiment, an example has been described in which the axis center angle changing unit 140 rotates the mixing container 110 in the front-to-back direction via the rotating support shaft unit 143. However, as long as the axis center angle changing unit 140 can tilt the axis of the mixing container 110, it may rotate left and right in addition to front and back, or may rotate freely 360 degrees.

[0050] The axial center angle changing motor 142 is used to rotate the mixing container 110 in the front-to-rear direction. By rotating the axial center angle changing motor 142 around the rotation support shaft 143 as a support shaft, the mixing container 110, which is connected to the axial center support part 141 via the lower shaft 112, rotates in the front-to-rear direction. This makes it possible to change the angle of the axial center G of the mixing container 110 rotated by the mixing container rotation part 130 to any angle.

[0051] The stand unit 150 is intended to carry the mixing container 110, the mixing container rotation unit 130, and the axis center angle change unit 140 and function as a cart for easily moving the agitation device 100, and is composed of multiple legs 151 that support the mixing container 110, the mixing container rotation unit 130, and the axis center angle change unit 140, and multiple caster units 152 provided at the lower ends of the legs 151.

[0052] In addition, a stopper 153 (not shown here) can be provided at the lower end of the leg 151, and by bringing the lower end of the leg 151 into direct contact with the ground, the agitator 100 can be fixed to the ground when the mixing container 110 is rotated.

[0053] In the mixing device 100 of this embodiment, by having the above-mentioned configuration, cement and water, which are raw materials for grout materials such as non-shrinkage mortar, are first placed in the mixing container 110, and then a plurality of metallic spheres, which are the mixing mass 120, are placed in the mixing container 110 together with these raw materials.

[0054] Next, the mixing vessel 110 containing the raw materials and the agitated mass 120 is rotated by the mixing vessel rotation unit 130 around the axis of the lower shaft 112. At this time, the axis angle changing motor 142 provided in the axis angle changing unit 140 is rotated in any rotation direction, so that the mixing vessel 110 rotates in the front-to-back direction. In this way, the axis angle changing unit 140 can change the angle of the axis of the rotating mixing vessel 110 to any angle.

[0055] Alternatively, the axis angle changing unit 140 may tilt the axis of the mixing vessel 110 at an arbitrary angle in advance, and the mixing vessel rotating unit 130 may rotate the mixing vessel 110 around the tilted axis.

[0056] In this way, by using axis angle changing unit 140 to tilt the axis of mixing vessel 110, the direction of the rotation axis of mixing vessel 110 and the horizontal direction no longer intersect at a right angle. When mixing vessel 110 rotates around the axis in this state, the raw materials inside rotating mixing vessel 110 move in a spiral along the rotation direction of mixing vessel 110.

[0057] The agitated mass 120 in the mixing vessel 110 also moves in a vortex shape along the rotation direction of the mixing vessel 110 due to the resistance of the raw materials moving in a vortex shape and the weight of the agitated mass 120. In addition, due to the resistance of the raw materials moving in a vortex shape and the rotation of the mixing vessel 110, the agitated mass 120 not only moves in a vortex shape but also rotates on its own axis.

[0058] In this way, the raw materials and the rotating agitation mass 120 move in a vortex shape inside the mixing vessel 110, whereby the raw materials inside the mixing vessel 110 are agitated and mixed. At this time, the agitated mass 120 has a larger specific gravity than the raw materials, and therefore moves downward in the mixing vessel 110 faster than the raw materials in the mixing vessel 110. This promotes agitation in the mixing vessel 110.

[0059] The agitated mass 120, which has moved downward in the mixing vessel 110 due to the difference in specific gravity between the raw material and the agitated mass 120, is carried along by the vortex of the raw material moving in a vortex shape within the mixing vessel 110, and moves up and down and left and right while rotating in a vortex shape within the mixing vessel 110. This further promotes agitation within the mixing vessel.

[0060] Furthermore, the agitated mass 120 moves up and down and left and right while rotating in a vortex shape inside the mixing vessel 110, so that the agitated mass 120 moves inside the mixing vessel while coming into contact with the inner surface of the mixing vessel 110 and other agitated masses 120.

[0061] As a result, raw materials present in areas where raw materials tend to stick when a highly viscous product is stirred, such as the inner circumferential surface of the mixing vessel 110 or the circumferential surface of the stirred mass 120, are peeled off by contact between the mixing vessel 110 and the stirred mass 120, or by contact between the stirred mass 120 and other stirred masses 120.

[0062] The raw materials separated by contact between the mixing vessel 110 and the agitated mass 120 or by contact between the agitated mass 120 and another agitated mass 120 are agitated in the mixing vessel 110 by the agitated mass 120 moving in a vortex shape in the mixing vessel 110. This causes the contents in the mixing vessel to be uniformly agitated and mixed.

[0063] As described above, in the stirring device 100 of this embodiment, the raw materials and the stirring mass 120 having a larger specific gravity than the raw materials are contained in the mixing container 110, the mixing container rotation unit 130 rotates the mixing container 110 around its axis, and the axis of the mixing container 110 rotated by the mixing container rotation unit 130 is tilted by the axis angle change unit 140, so that even if the product produced by stirring and mixing in the mixing container has a high viscosity, the entire product can be stirred and mixed uniformly.

[0064] FIG. 2 is a side view showing the mixing vessel tilted by the axis angle changing unit. FIG. 2(A) is a side view showing a state in which the axis angle changing unit 140 has aligned the axis G of the mixing vessel 110 with the vertical direction so that the opening 111 of the mixing vessel 110 faces the ceiling.

[0065] 2(A), by orienting the opening 111 of the mixing vessel 110 toward the ceiling, the surface S of the raw materials R contained in the mixing vessel 110 becomes perpendicular to the axial direction. In this case, since the inner peripheral surface of the mixing vessel 110 is formed as a smooth curved surface or flat surface without any protrusions or the like, even if the mixing vessel 110 rotates around the axial center G, the rotational force that rotates the raw materials R contained in the mixing vessel 110 in a vortex shape is small.

[0066] FIG. 2(B) is a side view showing a state in which the axis G direction of the mixing container 110 is tilted forward from the top-bottom direction by an angle of about 60 degrees by the axis angle changing unit 140. FIG. 2(C) is a side view showing a state in which the axis G direction of the mixing container 110 is tilted rearward from the top-to-bottom direction by an angle of about 60 degrees by the axis angle changing unit 140.

[0067] As shown in Figure 2(B) or Figure 2(C), by tilting the axis G direction of the mixing container 110 from the top-to-bottom direction to the front-to-back direction within 90 degrees, the opening 111 of the mixing container 110 will be oriented upward toward the front or rear.

[0068] 2(B) or 2(C), the raw materials R contained in the mixing container 110 are lifted in the direction of rotation while adhering to the inner circumferential surface of the mixing container 110. The raw materials R then fall due to their own weight. By repeating this process, the raw materials R contained in the mixing container 110 move in a vortex shape inside the mixing container 110.

[0069] Furthermore, when storing raw material R in mixing container 110, it is preferable to orient opening 111 of mixing container 110 toward the ceiling as shown in FIG. 2(A), opening 111 of mixing container 110 facing upward toward the front as shown in FIG. 2(B), or opening 111 of mixing container 110 facing upward toward the rear as shown in FIG. 2(C).

[0070] FIG. 2(D) is a side view showing a state in which the axis G direction of the mixing container 110 is tilted forward from the top-bottom direction by the axis angle changing unit 140 at an angle of about 120 degrees. FIG. 2(E) is a side view showing a state in which the axis G direction of the mixing container 110 is tilted rearward from the top-to-bottom direction by an angle of about 120 degrees by the axis angle changing unit 140.

[0071] FIG. 2(F) is a side view showing a state in which the axis angle changing unit 140 aligns the axis G of the mixing container 110 with the vertical direction so that the opening 111 of the mixing container 110 faces the ground.

[0072] As shown in Figure 2(D), Figure 2(E), or Figure 2(F), by tilting the axis G direction of the mixing container 110 from the top-to-bottom direction to the front-to-back direction by 90 degrees or more, the opening 111 of the mixing container 110 faces downward toward the front or downward.

[0073] By turning the opening 111 of the mixing container 110 to face forward downward, backward downward, or downward as shown in Figure 2(D), Figure 2(E), or Figure 2(F), the raw materials R contained in the mixing container 110 and the produced product can be removed.

[0074] FIG. 3 is a perspective view showing a state in which the mixing mass is contained in an inclined mixing vessel. As shown in FIG. 3, the inner peripheral surface of the mixing vessel 110 is formed as a smooth curved surface or flat surface without any protrusions or the like.

[0075] The agitated mass 120 contained in the mixing vessel 110 moves due to its own weight toward the bottom of the inclined mixing vessel 110. When the mixing vessel 110 is rotated around its axis in this state, the agitated mass 120 comes into contact with the inner peripheral surface of the rotating mixing vessel 110 and rotates at the bottom of the inclined mixing vessel 110.

[0076] FIG. 4 is a side view showing a state in which raw materials and agitated masses are contained in an inclined mixing vessel. FIG. 4(A) is a side view showing a state in which raw material R and agitated mass 120 are contained in an inclined mixing vessel 110. FIG.

[0077] 4(A), the raw material R and the agitated mass 120 contained in the mixing vessel 110 move due to their own weight toward the bottom of the inclined mixing vessel 110. Furthermore, since the specific gravity of the agitated mass 120 is greater than that of the raw material R, the agitated mass 120 is located closer to the bottom of the inclined mixing vessel 110 than the raw material R.

[0078] Figures 4(B) and 4(C) are side views showing the state in which the raw material R and the agitated mass 120 are contained in the tilted mixing vessel 110 and the mixing vessel rotation unit 130 rotates the tilted mixing vessel 110 around the axis G.

[0079] As shown in Figures 4(B) and 4(C), the raw material R contained in the mixing container 110 rises in the rotation direction while adhering to the inner surface of the mixing container 110, falls due to the raw material R's own weight, and moves in a vortex inside the mixing container 110.

[0080] At the same time, the agitated mass 120 located toward the bottom of the inclined mixing vessel 110 as shown in Figure 4(A) is carried by the vortex flow of the raw materials moving in a vortex shape inside the mixing vessel 110, and moves up and down and left and right while rotating in a vortex shape inside the mixing vessel 110. This further promotes agitation inside the mixing vessel.

[0081] FIG. 5 is a perspective view showing the process of producing a product using a mixing vessel containing raw materials and agitated masses. FIG. 5(A) is a perspective view showing a state in which raw material R and agitated mass 120 are contained in an inclined mixing vessel 110. FIG.

[0082] As shown in Figure 5(A), the raw material R and the stirred mass 120 contained in the mixing vessel 110 move toward the bottom of the inclined mixing vessel 110 due to their own weight, and the stirred mass 120, which has a larger specific gravity than the raw material R, is located toward the bottom of the inclined mixing vessel 110 than the raw material R.

[0083] Figure 5(B) is a perspective view showing a state in which the mixing container rotation unit 130 has begun to rotate the tilted mixing container 110 around the axis G, with the raw material R and the agitated mass 120 contained in the tilted mixing container 110.

[0084] As shown in Figure 5(B), by rotating the mixing vessel 110 from the state of Figure 5(A) around the axis G, the raw materials R contained in the mixing vessel 110 rise in the direction of rotation while adhering to the inner circumferential surface of the mixing vessel 110, and then fall due to the weight of the raw materials R. By repeating this process, the raw materials R begin to move in a vortex shape inside the mixing vessel 110. In addition, the agitated mass 120 begins to rotate at the bottom of the tilted mixing vessel 110.

[0085] Figure 5(C) is a perspective view showing a state in which the raw material R and the agitated mass 120 are contained in the tilted mixing container 110 and the mixing container rotation unit 130 continues to rotate the tilted mixing container 110 around the axis G.

[0086] 5(C), the agitated mass 120 moves up and down and left and right while rotating in a vortex shape inside the mixing vessel 110, riding on the vortex flow of the raw material R moving in a vortex shape inside the mixing vessel 110. As a result, the raw material inside the mixing vessel is agitated and approaches the product P.

[0087] Figure 5(D) is a perspective view showing a state in which the raw material R and the agitated mass 120 are contained in the tilted mixing container 110 and the mixing container rotation unit 130 continues to rotate the tilted mixing container 110 around the axis G.

[0088] As shown in FIG. 5(D), the agitated mass 120 moves up and down and left and right within the mixing vessel 110 while rotating on its axis, thereby further agitating the raw materials within the mixing vessel and moving closer to the product P. Figure 5(E) is a perspective view showing a state in which raw materials R and agitated mass 120 are contained in an inclined mixing vessel 110 and a product P is produced by the mixing vessel rotation unit 130 rotating the inclined mixing vessel 110 around the axis G.

[0089] As shown in Figure 5(E), by going through the steps of Figures 5(A) to 5(E), the grout material, which is a highly viscous product produced in the mixing vessel 110, moves in a vortex shape inside the mixing vessel 110.

[0090] FIG. 5(F) is a perspective view showing a state in which product P has been produced in the tilted mixing vessel 110 and the rotation of the mixing vessel 110 by the mixing vessel rotation unit 130 has stopped. As shown in Fig. 5(F), by stopping the rotation of the mixing vessel 110 by the mixing vessel rotation unit 130, the product P that had been moving in a vortex shape inside the mixing vessel 110 stops, and its surface becomes horizontal. Also, the stirred mass 120, which has a larger specific gravity than the raw material R, is located closer to the bottom of the inclined mixing vessel 110 than the product P made of the raw material R, and is therefore not shown in Fig. 5(F).

[0091] As described above, in the stirring device 100 of this embodiment, the raw materials and the stirring mass 120 having a larger specific gravity than the raw materials are contained in the mixing container 110, the mixing container rotation unit 130 rotates the mixing container 110 around its axis, and the axis of the mixing container 110 rotated by the mixing container rotation unit 130 is tilted by the axis angle change unit 140, so that even if the product produced by stirring and mixing in the mixing container has a high viscosity, the entire product can be stirred and mixed uniformly.

[0092] The grout material, which is the product P produced by the mixing device 100, is removed from the mixing container 110 by tilting the axial center G of the mixing container 110 by 90 degrees or more from the top-to-bottom direction to the front-to-back direction, so that the opening 111 of the mixing container 110 faces downward or forward, and the raw materials R contained in the mixing container 110 and the produced product P are removed from the mixing container 110.

[0093] After the product P is removed from the mixing vessel 110, the inside of the mixing vessel 110 is cleaned. When cleaning the inside of the mixing vessel 110, the direction of the axis G of the mixing vessel 110 is again tilted within 90 degrees from the top-to-bottom direction to the front-to-back direction, so that the opening 111 of the mixing vessel 110 faces upward toward the front or rear. A cleaning liquid such as water, cleaning cloths, agitated mass 120, etc. are placed in the mixing vessel 110, and the mixing vessel rotation unit 130 rotates the tilted mixing vessel 110 around the axis G.

[0094] As a result, the cleaning liquid moves in a vortex inside the mixing vessel 110, and the agitated mass 120 and cleaning cloth move while rotating at the bottom of the rotating mixing vessel 110. As a result, the bottom of the rotating mixing vessel 110 comes into contact with the rotating agitated mass 120 and cleaning cloth, and the product P attached to the inner peripheral surface of the mixing vessel 110 can be peeled off.

[0095] Then, with the product P adhering to the inner peripheral surface of the mixing container 110 peeled off, the inside of the mixing container 110 can be easily cleaned by wiping it with a cleaning cloth or the like. In addition, the inner peripheral surface of the mixing container 110 is formed as a smooth curved surface or flat surface without any protrusions or the like, making cleaning extremely easy.

[0096] Furthermore, if the product P attached to the inner surface of the mixing vessel 110 can be peeled off when cleaning the mixing vessel 110, the cleaning cloth contained in the mixing vessel 110 together with the agitation mass 120 can be omitted.

[0097] In addition, a resin layer can be provided on the inner surface of the mixing vessel 110. This resin layer makes it easier for the highly viscous grout raw materials to peel off from the inner surface of the mixing vessel 110, preventing the raw materials from sticking to the inner surface of the mixing vessel 110.

[0098] The resin layer provided on the inner surface of the mixing container 110 is a resin with excellent non-adhesive properties, and for example, a sheet material made of polyethylene resin, particularly ultra-high molecular weight polyethylene, can be attached to the entire inner surface or a main portion of the mixing container 110. Alternatively, the resin layer provided on the inner surface of the mixing container 110 can be formed by painting a resin material.

[0099] In this way, when a resin layer with excellent non-stick properties is provided on the inner surface of the mixing container 110, it is possible to prevent the highly viscous grout raw materials from adhering to the inner surface of the mixing container 110. In addition, since the grout raw materials are prevented from adhering to the inner surface of the mixing container 110, cleaning becomes easier. Note that other resin materials with excellent non-stick properties can also be selected.

[0100] The resin layer provided on the inner surface of the mixing vessel 110 is made of a resin having excellent abrasion resistance, For example, a sheet material made of rubber material used in belt conveyors, such as natural rubber, styrene butadiene rubber, or butadiene rubber, can be attached to the entire inner surface of the mixing vessel 110 or to the main part thereof.

[0101] As a result, a resin layer with excellent abrasion resistance is provided on the inner surface of the mixing vessel 110, which reduces the impact on the mixing vessel 110 caused by the agitation mass 120 that is contained inside the mixing vessel 110 together with the raw materials and being agitated, and can suppress noise generated during agitation and mixing. Note that other resin materials with excellent abrasion resistance can also be selected.

[0102] FIG. 6 is a perspective view showing a state in which a sealing lid for reducing the pressure in the internal space of the mixing container closes the opening. As shown in FIG. 6, the stirring device 100 of this embodiment can be provided with a sealing lid 113 that seals the opening 111 of the mixing container 110 as one of the pressure reducing mechanisms for reducing the pressure inside the mixing container 110.

[0103] The sealing lid member 113 is a lid that can airtightly cover the opening 111 of the mixing container 110. The sealing lid member 113 is detachably attached to the mixing container 110, and by attaching the sealing lid member 113, the inside of the mixing container 110 can be made into an airtight space that is cut off from the outside air.

[0104] In addition, a vacuum pump, which is a pressure reduction means 160, can be provided as one of the pressure reduction mechanisms, and the internal space of the mixing container 110, whose opening 111 is sealed with the sealing lid material 113, is connected to the pressure reduction means 160 via a pressure reduction hose H.

[0105] The pressure reduction hose H is provided with an on-off valve 114 that is detachable and can open and close the conduit of the pressure reduction hose H between the internal space of the sealed mixing container 110 and the pressure reduction means 160. The on-off valve 114 can be equipped with a sensor for measuring the degree of vacuum in the internal space of the mixing container 110.

[0106] With the raw material R and the agitated mass 120 contained in the mixing vessel 110, the opening 111 of the mixing vessel 110 is sealed with a sealing lid material 113, and the pressure reduction means 160 connected to the mixing vessel 110 via the pressure reduction hose H is operated to reduce the pressure in the internal space of the mixing vessel 110 until it becomes a vacuum.

[0107] In this state, the tilted mixing vessel 110 is rotated around the axis G to mix the raw materials R and the mixed mass 120 contained in the mixing vessel 110. At this time, the internal space of the mixing vessel 110 is in a vacuum state, so that air can be prevented from being mixed into the product during mixing and stirring. This increases the density of the grout material, which is the product, and improves the strength of the grout material. [Explanation of symbols]

[0108] 100: Stirring device 110: Mixing container 111: Opening 112: Lower axis 120: Mixing mass 130: Mixing vessel rotating part 131: Mixing container rotation motor 140: Shaft angle change section 141: Axis support part 142: Shaft angle change motor 143: Rotating shaft part 150: Stand 151: Legs 152: Caster part 153: Stopper

Claims

1. 1. A mixing device for mixing powdered and liquid raw materials in a cylindrical mixing vessel to produce a highly viscous product, A stirring mass having a specific gravity greater than that of the raw materials and accommodated in the mixing container together with the raw materials; a mixing vessel rotating unit that rotates the mixing vessel around an inclined axis; A stirring device comprising:

2. The stirred mass is A mass consisting of a sphere, ellipsoid, or polyhedron; 2. The stirring device according to claim 1, wherein:

3. The mass is Being a metal body, 3. The stirring device according to claim 2, wherein:

4. The outer diameter of the stirring block is The diameter is 1 / 2 or less of the inner diameter of the mixing vessel.

3. The stirring device according to claim 2, wherein:

5. The inner circumferential surface of the mixing vessel is be formed with smooth curved or flat surfaces; 2. The stirring device according to claim 1, wherein:

6. The mixing vessel comprises: a pressure reducing mechanism for reducing the pressure in the interior space; The stirring device according to claim 1, further comprising:

7. The mixing vessel comprises: a resin layer provided on the inner surface; The stirring device according to claim 1, further comprising:

8. The highly viscous product comprises: The grout material is composed of cement as the powder raw material and water as the liquid raw material; 2. The stirring device according to claim 1, wherein:

9. an axial center angle changing unit that changes the angle of the axial center to an arbitrary angle; The stirring device according to claim 1, further comprising:

10. A mixing method for producing a highly viscous product by mixing raw materials consisting of powder raw materials and liquid raw materials in a cylindrical mixing vessel, comprising: A step of placing a stirred mass having a larger specific gravity than the raw materials in the mixing vessel together with the raw materials; a mixing vessel rotating unit rotating the mixing vessel around an inclined axis; A stirring method comprising:

11. A method for cleaning an agitation device that produces a highly viscous product by agitating and mixing the raw materials in the mixing container, the agitation device comprising: a mixing container rotation unit that rotates the mixing container around an axis; and an axis angle changing unit that tilts the axis of the mixing container rotated by the mixing container rotation unit; the method comprising: a step of receiving a washing liquid and the agitated mass in a mixing vessel after discharging the highly viscous product; a step of rotating the mixing vessel around an inclined axis by the mixing vessel rotating unit; A cleaning method comprising:

12. The mixing container contains the cleaning liquid, the agitated mass, and a cleaning cloth; The cleaning method according to claim 11, characterized by:

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