Mixing device and mixing method

Abstract

The present invention relates to a mixing device and a mixing method that can realize mixing of two or more objects to be mixed at low cost. [Solution] A mixing device for mixing two or more objects to be mixed, comprising a mixing vessel including an outer tube extending along the vertical direction and at least one inner tube provided inside the outer tube, and at least one upward flow generating section for generating an upward flow in an outer flow space formed between the outer tube and the inner tube or an inner flow space formed inside the inner tube, the inner flow space and the outer flow space being connected at the upper and lower sides of the inner tube and configured to be capable of forming a circulation flow path for circulating the two or more objects to be mixed.

Description

[Technical field]

[0001] The present invention relates to a mixing device and a mixing method. [Background technology]

[0002] 2. Description of the Related Art Conventionally, there has been known an agitation device that rotates an agitating blade by a motor to agitate a material to be agitated that is contained in an agitation vessel (see Patent Document 1, etc.). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2023-171217 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, the stirring device described in Patent Document 1 has a problem in that the manufacturing cost and running cost are high because a driving means such as a motor is used to stir the material to be stirred.

[0005] The present invention relates to a mixing device and a mixing method that can realize mixing of two or more objects to be mixed at low cost. [Means for solving the problem]

[0006] The mixing device of the present invention is a mixing device for mixing two or more objects to be mixed, and is equipped with a mixing container including an outer cylinder extending along a vertical direction and at least one inner cylinder provided inside the outer cylinder, and at least one upward flow generating section for generating an upward flow in an outer flow space formed between the outer cylinder and the inner cylinder or an inner flow space formed inside the inner cylinder, and the inner flow space and the outer flow space are connected at the upper and lower sides of the inner cylinder and are configured to be able to form a circulation flow path for circulating the two or more objects to be mixed.

[0007] In the mixing device of the present invention, the upward flow generating section may include at least one gas release section that releases gas into the outer flow space or the inner flow space below the vertical middle section of the mixing vessel.

[0008] The mixing device according to the present invention may include a top plate portion provided opposite an upper opening of the inner cylinder, and the lower surface of the top plate portion may have an inclined surface that slopes downward at the center in a planar direction.

[0009] The mixing device according to the present invention may include at least one of an inner swirling flow generating section that causes the flow in the inner flow space to become a swirling flow, and an outer swirling flow generating section that causes the flow in the outer flow space to become a swirling flow.

[0010] In the mixing device of the present invention, the inner swirling flow generating section and the outer swirling flow generating section may have a plurality of blade portions arranged at a predetermined interval, and the plurality of blade portions may have a shape curved in the circumferential direction of the inner cylinder.

[0011] In the mixing device according to the present invention, the blade portion may be configured to be non-rotatable.

[0012] The mixing device of the present invention is a mixing device for mixing two or more objects to be mixed, and includes a tubular member extending along a vertical direction, and at least one upward flow generating section for generating an upward flow in an outer flow space formed outside the tubular member or an inner flow space formed inside the tubular member, and the inner flow space and the outer flow space are connected to each other on the upper and lower sides of the tubular member, and are configured to be able to form a circulation flow path for circulating the two or more objects to be mixed.

[0013] The mixing method of the present invention is a mixing method for mixing two or more objects to be mixed, and includes a flow-in step of flowing the objects to be mixed into a mixing vessel including an outer cylinder extending along a vertical direction and at least one inner cylinder provided inside the outer cylinder, and a circulation step of circulating the objects to be mixed by generating an upward flow in an outer flow space formed between the outer cylinder and the inner cylinder or in an inner flow space formed inside the inner cylinder. Effect of the Invention

[0014] According to the mixing device and mixing method of the present invention, it is possible to realize mixing of two or more mixing targets at low cost. [Brief description of the drawings]

[0015] [Figure 1] FIG. 1 is a schematic cross-sectional view showing a mixing device according to an embodiment of the present invention. [Diagram 2] FIG. 2 is an enlarged view showing a part of the mixing device according to the embodiment. [Diagram 3] FIG. 2 is an enlarged view showing a part of the mixing device according to the embodiment. [Figure 4] 3 is a schematic plan view showing a lower blade portion according to the embodiment. FIG. [Diagram 5] 4 is a schematic bottom view showing the upper wing portion according to the embodiment. FIG. [Figure 6] FIG. 2 is a schematic diagram showing the mixing flow. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Preferred embodiments for carrying out the present invention will be described below with reference to the drawings. Note that the following embodiments do not limit the inventions according to the claims, and not all of the combinations of features described in the embodiments are necessarily essential to the solution of the invention. In addition, in the present embodiments, the scale and dimensions of each component may be exaggerated, and some components may be omitted.

[0017] [Overall configuration of the mixing device] The mixing device according to the present embodiment is a mixing device that mixes two or more objects to be mixed. The objects to be mixed are gas, liquid, and solid (powder). Examples of the mixture include, but are not limited to, (1) a liquid containing sludge and air or ozone, (2) a liquid containing odorous substances or coloring substances and ozone, (3) a liquid and an inert gas such as nitrogen gas or an active gas such as chlorine gas, (4) an oily substance such as water and oil, for example, liquid ingredients for mayonnaise, solid ingredients for dressing, food ingredients such as sauce, and chemical materials, whether solid or liquid, such as shampoo and nail glitter, and (5) other things such as water and salt, food coloring materials, koji materials, fertilizer materials, drug materials, and sintered body materials.

[0018] As shown in Figures 1 to 3, the mixing device 1 includes a mixing container 10 for mixing two or more objects to be mixed, an upward flow generating section 20 for generating an upward flow inside the mixing container 10, a discharge section 30 for discharging waste from inside the mixing container 10, a lower swirling flow generating section 40 provided below the inner cylinder 12 described later, and an upper swirling flow generating section 50 provided above the inner cylinder 12 described later.

[0019] [Mixing vessel configuration] As shown in FIGS. 1 to 3, the mixing vessel 10 has an outer cylinder 11 extending along the vertical direction, and an inner cylinder 12 provided inside the outer cylinder 11.

[0020] In this specification, "vertical" includes both completely vertical and approximately vertical. "Almost vertical" means a slight inclination from the vertical, specifically, an inclination to the extent that does not impede the effect of the mixer 1.

[0021] The outer cylinder 11 and the inner cylinder 12 are each formed in a cylindrical shape with an open upper end and lower end. The outer diameter of the inner cylinder 12 is smaller than the inner diameter of the outer cylinder 11. The vertical length of the inner cylinder 12 is also shorter than the vertical length of the outer cylinder 11. In this embodiment, only one inner cylinder 12 is provided, but this is not limited thereto, and two or more inner cylinders 12 may be provided.

[0022] The shapes of the outer cylinder 11 and the inner cylinder 12 are not limited to cylindrical shapes, and may be, for example, rectangular cylindrical, conical, or pyramidal. A convex or concave portion may be formed in a part in the vertical direction, or the cylinder may be formed in a bellows shape.

[0023] The mixing vessel 10 has a bottom 13 that closes the lower end of the outer cylinder 11, and a top 14 that closes the upper end of the outer cylinder 11. The bottom 13 is formed in a bottomed cylindrical shape with an open upper end. The bottom 13 is configured to close the lower end of the outer cylinder 11 by fitting the lower end of the outer cylinder 11 into it. The top 14 is formed in a topped cylindrical shape with an open lower end. The top 14 is configured to close the upper end of the outer cylinder 11 by fitting the upper end of the outer cylinder 11 into it.

[0024] The mixing vessel 10 also has an outer flow space 15 formed between the outer cylinder 11 and the inner cylinder 12, and an inner flow space 16 formed inside the inner cylinder 12. The outer flow space 15 and the inner flow space 16 communicate with each other on the upper and lower sides of the inner cylinder 12, and are configured to be capable of forming a circulation flow path CP that circulates two or more objects to be mixed.

[0025] [Configuration of the upward flow generation section] 1 to 3, the upward flow generating section 20 has a gas generating section 21 that generates gas, a gas releasing section 22 that releases the gas generated in the gas generating section 21 into the outer flow space 15 or the inner flow space 16, a gas supplying section 23 that supplies the gas generated in the gas generating section 21 to the gas releasing section 22, and a connecting section 24 that connects the gas releasing section 22 and the gas supplying section 23. In this embodiment, only one upward flow generating section 20 is provided, but this is not limited thereto, and two or more may be provided.

[0026] The gas generating section 21 is, for example, a fan or a blower. The gas releasing section 22 is, for example, a tube, and is configured to be able to flow gas. One end of the gas releasing section 22 is connected to the connecting section 24, and the other end of the gas releasing section 22 is connected to an attached section 43c of a support section 43, which will be described later. Therefore, the gas releasing section 22 according to this embodiment is configured to release gas into the inner flow space 16. Specifically, the gas releasing section 22 is configured to release gas into the inner flow space 16 via the support section 43, which will be described later.

[0027] From the viewpoint of generating an upward flow, the other end of the gas release part 22 may be located below the vertical middle part of the mixing vessel 10, and may be connected to, for example, the outer cylinder 11 or the inner cylinder 12. When the other end of the gas release part 22 is connected to the outer cylinder 11, the gas release part 22 is configured to release the gas into the outer flow space 15.

[0028] The gas supply unit 23 is, for example, a tube, and is configured to be able to flow gas. One end of the gas supply unit 23 is connected to the gas generation unit 21, and the other end of the gas supply unit 23 is connected to the connection unit 24. The connection unit 24 is, for example, a tube joint, and is inserted into an opening (not shown) formed in the top 14.

[0029] The upward flow generating section 20 having the above configuration is configured to generate an upward flow in the inner flow space 16 by the gas release section 22 releasing gas into the inner flow space 16. When the gas release section 22 releases gas into the outer flow space 15, the upward flow generating section 20 generates an upward flow in the outer flow space 15.

[0030] [Exhaust section configuration] 1 and 2, the discharge part 30 has a tube part 31 that discharges the discharged material in the mixing container 10, and a holding part 32 that holds the tube part 31. Examples of the discharged material include surplus material (e.g., gas, liquid, etc.) that exceeds the volume of the mixing container 10, and generated material (e.g., bubbles, etc.) that is generated by mixing.

[0031] The cylindrical portion 31 is formed in a tubular shape with both ends open, and is inserted into an opening (not shown) formed in the top portion 14. That is, the upper end of the cylindrical portion 31 is located outside the mixing container 10, and the lower end of the cylindrical portion 31 is located inside the mixing container 10. As shown in FIG. 1, the cylindrical portion 31 may be formed by connecting two or more tubes, or may be composed of one tube. The cylindrical portion 31 has a plurality of inflow holes 31a that allow the gas in the mixing container 10 to flow into the cylindrical portion 31. The inflow holes 31a are provided in a portion of the cylindrical portion 31 that is located inside the mixing container 10 (in this embodiment, below the axial middle portion of the cylindrical portion 31), and are provided along both the axial and circumferential directions of the cylindrical portion 31. The axial length of the cylindrical portion 31 may be changed depending on the application. For example, the cylindrical portion 31 may be formed long when it is desired to actively discharge discharged materials such as bubbles generated by mixing liquid and ozone. On the other hand, when it is not desired to actively discharge the waste, for example, when mixing food materials such as mayonnaise, the length of the nozzle may be made short.

[0032] The holding part 32 is formed in a disk shape, and has a mounting hole 32a in the center for mounting the tube part 31. The holding part 32 also has insertion holes 32b at both radial ends for inserting protrusions 51c formed on the upper end of the top plate part 51 described later. The holding part 32 is configured to hold the tube part 31 by inserting the lower end of the tube part 31 into the mounting hole 32a. The holding part 32 is also configured to be attached to the upper end of the top plate part 51 by inserting the protrusions 51c into the insertion hole 32b. The holding part 32 is attached to the upper end of the top plate part 51, so that the inner tube 12 can be prevented from floating up. The holding part 32 may be omitted, or may be formed integrally with the upper swirling flow generating part 50 described later.

[0033] The discharge part 30 having the above configuration is configured to discharge the discharged material that has flowed into the cylindrical part 31 from the lower end of the cylindrical part 31 and the inlet hole 31a of the cylindrical part 31 to the outside of the mixing container 10. The discharged material discharged from the discharge part 30 can be supplied to, for example, any storage tank.

[0034] [Configuration of lower swirl flow generation section] As shown in Figures 1, 3 and 4, the lower swirling flow generating section 40 has a weight section 41 placed on the bottom surface of the bottom portion 13, a plurality of (seven in this embodiment) blade sections 42 (lower blade sections) arranged at predetermined intervals around the circumferential direction of the inner tube 12, and a support section 43 capable of supporting the inner tube 12.

[0035] The blades 42 are provided on the upper surface of the weight portion 41 and are configured to be non-rotatable. Each blade 42 extends along the radial direction of the inner cylinder 12 and has a shape curved in the circumferential direction of the inner cylinder 12. That is, the blades 42 are provided radially with the axis of the inner cylinder 12 as the center.

[0036] The inner end of each blade 42 in the extension direction is located within the area of ​​the inner cylinder 12 in a plan view. Meanwhile, the outer end of each blade 42 in the extension direction is located within the area between the outer cylinder 11 and the inner cylinder 12 in a plan view. Also, each blade 42 is formed so that its height increases from the outer side in the extension direction toward the inner side in the extension direction. This has the advantage that the flow from the outer flow space 15 or the flow from the inner flow space 16 can be swirled efficiently without being obstructed.

[0037] The support part 43 is formed in a cylindrical shape with open upper and lower ends, and has a shape that tapers from the lower end to the upper end. The support part 43 has an insertion groove 43a at its upper end into which the lower end of the inner tube 12 can be inserted. The insertion groove 43a is formed in a concave shape that is recessed downward from the upper end of the support part 43. The support part 43 is configured to support the inner tube 12 by inserting the lower end of the inner tube 12 into the insertion groove 43a.

[0038] The support portion 43 has, at its lower end portion, an annular pipe portion 43b that surrounds the periphery of the blade portion 42. The support portion 43 also has a mounting portion 43c to which the gas release portion 22 is mounted.

[0039] The pipe section 43b is formed in a tubular shape having an internal space capable of flowing the gas supplied from the gas release section 22. Outlet holes 43d for discharging the gas supplied from the gas release section 22 are formed in the inner peripheral section (the end section on the blade section 42 side) of the pipe section 43b. In this embodiment, the outlet holes 43d are a plurality of openings formed at predetermined intervals in the circumferential direction of the pipe section 43b. The outlet holes 43d may be a single opening or may be an annular opening extending along the circumferential direction of the pipe section 43b.

[0040] The mounting portion 43c is formed to extend upward from a part of the circumferential direction of the pipe portion 43b, and is formed in a cylindrical shape with an open upper end and lower end. Therefore, the gas supplied from the gas release portion 22 flows through the mounting portion 43c and is supplied to the pipe portion 43b. The support portion 43 is configured to be connected to the gas release portion 22 by inserting the mounting portion 43c into the other end of the gas release portion 22.

[0041] The support part 43 having the above-mentioned configuration is provided between the upper surface of the weight part 41 and the lower end of the inner tube 12, and is configured to communicate the outer flow space 15 and the inner flow space 16 between the lower end of the support part 43 and the upper surface of the weight part 41. Specifically, the support part 43 is attached to the weight part 41 by fixing a plurality of fixing parts (not shown) extending from the outer periphery (end part on the outer tube 11 side) of the tube part 43b to the outer edge part of the weight part 41. Note that, in the present embodiment, the configuration in which the support part 43 includes the tube part 43b and the attached part 43c has been described, but the present invention is not limited thereto, and the support part 43 may be configured not to include these.

[0042] [Configuration of the upper swirl flow generating section] As shown in Figures 1, 2 and 5, the upper swirling flow generating section 50 has a top plate section 51 arranged opposite the upper opening 12a of the inner tube 12, a plurality of (six in this embodiment) blade sections 52 (upper blade sections) arranged at a predetermined interval around the circumferential direction of the inner tube 12, and an attachment section 53 that can be attached to the inner tube 12.

[0043] The top plate portion 51 has a circular planar shape. The top plate portion 51 has an inclined surface 51a that is inclined downward at the center in the planar direction. That is, the top plate portion 51 has a shape in which the center in the planar direction is recessed downward, and is formed into a substantially conical shape as a whole. From the viewpoint of efficiently circulating the mixture to be mixed, it is sufficient that at least the lower surface of the top plate portion 51 has the inclined surface 51a.

[0044] A communication hole 51b that communicates with the inner flow space 16 and the internal space of the tube portion 31 is formed in the center of the top plate portion 51 in the planar direction. In addition, a plurality of (three in this embodiment) protrusions 51c that are inserted into the insertion holes 32b of the holder 32 are formed on the upper end of the top plate portion 51.

[0045] The blades 52 are provided on the lower surface of the top plate 51. Specifically, the blades 52 are formed to extend downward from the lower surface of the top plate 51 and are configured to be non-rotatable. Each blade 52 extends along the radial direction of the inner tube 12 and has a shape curved in the circumferential direction of the inner tube 12. That is, the blades 52 are provided radially around the axis of the inner tube 12.

[0046] The curved direction of blade portion 52 may be the same as or different from the curved direction of blade portion 42, but is preferably different from the viewpoint of efficiently mixing the objects to be mixed. In this embodiment, the curved direction of blade portion 42 is leftward (counterclockwise), and the curved direction of blade portion 52 is rightward (clockwise).

[0047] The inner end of each blade 52 in the extension direction is located within the area of ​​the inner cylinder 12 in a bottom view. On the other hand, the outer end of each blade 52 in the extension direction is located within the area between the outer cylinder 11 and the inner cylinder 12 in a bottom view. Also, each blade 52 is formed so that its height decreases from the outer side in the extension direction toward the inner side in the extension direction. This has the advantage that the flow from the outer flow space 15 or the flow from the inner flow space 16 can be swirled efficiently without being hindered.

[0048] The mounting portion 53 is formed in an annular shape surrounding the periphery of the lower end of the blade portion 52. That is, the upper swirl flow generating portion 50 according to this embodiment is configured to communicate the outer flow space 15 and the inner flow space 16 between the lower surface of the top plate portion 51, the surface of the blade portion 52, and the inner peripheral portion of the mounting portion 53 (the end portion on the blade portion 52 side).

[0049] The mounting portion 53 has a mounting groove 53a into whose lower end the upper end of the inner tube 12 can be inserted. The mounting groove 53a is formed in a concave shape that is recessed upward from the lower end of the mounting portion 53. The mounting portion 53 is configured to be attached to the inner tube 12 by inserting the upper end of the inner tube 12 into the mounting groove 53a.

[0050] [Configuration of the inner swirl flow generating section and the outer swirl flow generating section] In this embodiment, either the lower swirling flow generating section 40 or the upper swirling flow generating section 50 functions as an inner swirling flow generating section 60 that turns the flow in the inner flow space 16 into a swirling flow. The other either the lower swirling flow generating section 40 or the upper swirling flow generating section 50 functions as an outer swirling flow generating section 70 that turns the flow in the outer flow space 15 into a swirling flow.

[0051] Whether the lower swirling flow generating section 40 and the upper swirling flow generating section 50 function as the inner swirling flow generating section 60 or the outer swirling flow generating section 70 depends on the position where the upward flow generating section 20 generates an upward flow. Specifically, when the upward flow generating section 20 generates an upward flow in the inner flow space 16, the lower swirling flow generating section 40 functions as the inner swirling flow generating section 60, and the upper swirling flow generating section 50 functions as the outer swirling flow generating section 70. On the other hand, when the upward flow generating section 20 generates an upward flow in the outer flow space 15, the lower swirling flow generating section 40 functions as the outer swirling flow generating section 70, and the upper swirling flow generating section 50 functions as the inner swirling flow generating section 60.

[0052] [Mixing method] Next, a mixing method using the mixer 1 will be described with reference to Fig. 6. The mixing method according to this embodiment includes an inflow process of inflowing the mixture into the mixing container 10, and a circulation process of circulating the mixture. In the following description, as an example, a case where a solid and a liquid are mixed (solid-liquid mixing) will be described.

[0053] [Inflow process] The solid and liquid to be mixed are poured into the mixing vessel 10. The solid and liquid may be poured from the upper end of the outer cylinder 11 by removing the top portion 14, or may be poured from an inlet (not shown) provided in the outer cylinder 11.

[0054] [Circulation process] As shown in FIG. 6, an upward flow is generated in the inner flow space 16 (see arrow F1 in FIG. 6). Specifically, first, the gas generation section 21 supplies gas to the gas release section 22 via the gas supply section 23 and the connection section 24. Next, the gas release section 22 releases the gas into the inner flow space 16 via the support section 43. This generates an upward flow in the inner flow space 16. Note that the gas released into the inner flow space 16 flows and swirls between the blade sections 42, so that a swirling upward flow is generated in the inner flow space 16. That is, the solids and liquids in the inner flow space 16 rise in the inner flow space 16 while swirling.

[0055] When the solids and liquid in the inner flow space 16 rise in the inner flow space 16, the solids and liquid in the outer flow space 15 are drawn into the inner flow space 16 (see arrow F2 in FIG. 6), and a downward flow is generated in the outer flow space 15 (see arrow F3 in FIG. 6). The solids and liquid drawn from the outer flow space 15 to the inner flow space 16 flow between the blade portions 42, and therefore rise in the inner flow space 16 while swirling, coupled with the swirling force of the gas released from the gas release portion 22.

[0056] Meanwhile, solids and liquids rising in the inner flow space 16 rise to the top plate portion 51, then flow along the inclined surface 51a of the top plate portion 51 into the outer flow space 15, and then descend through the outer flow space 15 (see arrow F4 in FIG. 6). Note that the solids and liquids flowing into the outer flow space 15 swirl as they flow between the blade portions 52, and thus a swirling downward flow is generated in the outer flow space 15. That is, the solids and liquids in the outer flow space 15 descend through the outer flow space 15 while swirling.

[0057] The solid and liquid to be mixed circulate through the circulation flow channel CP in the above-described manner, and are mixed with each other during the circulation process through the circulation flow channel CP.

[0058] [Advantages of the mixing device according to this embodiment] The mixing device 1 of this embodiment is a mixing device for mixing two or more objects to be mixed, and is equipped with a mixing container 10 including an outer tube 11 extending along the vertical direction and at least one inner tube 12 provided inside the outer tube 11, and at least one upward flow generating section 20 for generating an upward flow in an outer flow space 15 formed between the outer tube 11 and the inner tube 12 or in an inner flow space 16 formed inside the inner tube 12, and the inner flow space 16 and the outer flow space 15 are connected to each other on the upper and lower sides of the inner tube 12, and are configured to be capable of forming a circulation flow path CP for circulating the two or more objects to be mixed.

[0059] According to the mixer 1 having such a configuration, by circulating the mixture, the mixture is stirred in the circulation flow path CP, and thus the mixture can be advantageously mixed. In addition, since there is no need to use a motor to circulate the mixture, the mixture of two or more mixtures can be realized at low cost, and the reliability and durability are also high.

[0060] In the mixer 1 according to the present embodiment, the upward flow generating section 20 is provided with at least one gas release section 22 that releases gas into the outer flow space 15 or the inner flow space 16 below the vertical middle section of the mixing vessel 10. According to the mixer 1 having such a configuration, the objects to be mixed can be circulated simply by releasing the gas from the gas release section 22, and therefore, there are advantages in that the objects to be mixed can be mixed at low cost and are also highly reliable and durable.

[0061] The mixer 1 according to this embodiment includes a top plate 51 provided opposite the upper opening 12a of the inner cylinder 12, and the bottom surface of the top plate 51 has an inclined surface 51a that is inclined downward toward the center in the planar direction. The mixer 1 having such a configuration has the advantage that the rising objects to be mixed flow along the inclined surface 51a, making it possible to efficiently circulate the objects to be mixed.

[0062] The mixer 1 according to this embodiment includes at least one of an inner swirling flow generating section 60 that causes the flow in the inner flow space 16 to become a swirling flow, and an outer swirling flow generating section 70 that causes the flow in the outer flow space 15 to become a swirling flow. The mixer 1 having such a configuration has the advantage that the circulation path of the mixture is lengthened by the swirling, and the stirring of the mixture is promoted, so that the mixture can be mixed efficiently.

[0063] In the mixer 1 according to this embodiment, the inner swirling flow generating section 60 and the outer swirling flow generating section 70 include a plurality of blade portions 42 (or blade portions 52) provided at predetermined intervals, and the plurality of blade portions 42 (or blade portions 52) have a shape curved in the circumferential direction of the inner cylinder 12. The mixer 1 having such a configuration has the advantage that a swirling flow can be generated simply by causing the objects to be mixed to flow between the blade portions 42 (or blade portions 52).

[0064] In the mixer 1 according to this embodiment, the blade portion 42 (or the blade portion 52) is configured to be non-rotatable. According to the mixer 1 having such a configuration, a swirling flow can be generated without rotating the blade portion 42 (or the blade portion 52), which has the advantage of low costs (e.g., the number of parts, power costs, costs associated with part replacement, etc.). In addition, since the blade portion 42 (or the blade portion 52) does not rotate, there is also the advantage that solids do not get caught in the blade portion 42 (or the blade portion 52) even when they are circulated.

[0065] [Variations] The mixing device and the mixing method according to the present invention are not limited to the above-described embodiment, and various modifications can be made without departing from the technical concept of the present invention.

[0066] In the above-mentioned embodiment, the mixing device 1 has been described as including the outer cylinder 11 and the inner cylinder 12, but is not limited thereto, and may include only the inner cylinder 12 (cylinder member). In this case, the mixing device 1 may be used by being placed in, for example, a water tank or a bathtub.

[0067] In the above-described embodiment, the upper swirl flow generating section 50 has been described as including the top plate portion 51, but is not limited thereto and may not include the top plate portion 51. Moreover, the top plate portion 51 may not include the inclined surface 51a and may be formed in a flat shape.

[0068] In the above-described embodiment, the mixing device 1 has been described as being equipped with a lower swirling flow generating section 40 and an upper swirling flow generating section 50, but this is not limited thereto, and the mixing device 1 may be equipped with only one of the sections or neither of the sections.

[0069] In the above-described embodiment, the mixing device 1 has been described as having a top 14 that closes the upper end of the outer cylinder 11 and an exhaust section 30 that exhausts gas from within the mixing container 10. However, the present invention is not limited to this, and the mixing device 1 may have an open-to-atmosphere configuration in which the top 14 and exhaust section 30 are not provided and the upper ends of the outer cylinder 11 and the inner cylinder 12 are open.

[0070] In the above-described embodiment, the outer cylinder 11 and the bottom portion 13 are described as being formed independently, but this is not limited thereto, and the outer cylinder 11 and the bottom portion 13 may be integrally formed. Also, for example, the outer cylinder 11, the bottom portion 13, the weight portion 41 and the blade portion 42 may be integrally formed, or the bottom portion 13, the weight portion 41 and the blade portion 42 may be integrally formed, or the weight portion 41 and the blade portion 42 may be integrally formed. Also, the weight portion 41 does not have to be provided.

[0071] It is apparent from the claims that the above-mentioned modifications are included within the scope of the present invention. [Explanation of symbols]

[0072] 1: Mixing device 10: Mixing container 11: Outer cylinder 12: Inner cylinder 12a: Upper opening 13: Bottom 14:Top 15:Outer flow space 16:Inner flow space 20: Upward flow generation section 21: Gas generating section 22: Gas release section 23: Gas supply section 24: Connection part 30: Discharge section 31:Cylinder part 31a:Inflow hole 32: Holding part 32a: Mounting hole 32b: Insertion hole 40: Lower swirl flow generation section 41: Weight section 42: Wing 43: Support part 43a: Insertion groove 43b: Pipe section 43c: Attached part 43d:Outflow hole 50: Upper swirl flow generation section 51: Top plate 51a: Inclined surface 51b:Communication hole 51c:Protrusion 52: Wing 53: Mounting part 53a: Mounting groove 60: Inner swirl flow generating section 70:Outer swirl flow generation part CP: Circulation channel

Claims

1. A mixing device for mixing two or more objects to be mixed, A mixing vessel including an outer cylinder and at least one inner cylinder provided inside the outer cylinder; At least one upward flow generating unit that generates an upward flow in an outer flow space formed between the outer cylinder and the inner cylinder or in an inner flow space formed inside the inner cylinder; at least one of an inner swirling flow generating section that causes the flow in the inner flow space to swirl and an outer swirling flow generating section that causes the flow in the outer flow space to swirl; Equipped with The inner flow space and the outer flow space are connected to each other at the upper side and the lower side of the inner cylinder, and are configured to be able to form a circulation flow path that circulates the two or more objects to be mixed, The inner swirl flow generating portion and the outer swirl flow generating portion each have a plurality of blade portions provided at predetermined intervals, The plurality of blades are curved in the circumferential direction of the inner cylinder and are configured to be non-rotatable. Mixing equipment.

2. The upward flow generating section is provided with at least one gas release section that releases gas into the outer flow space or the inner flow space below the middle part of the mixing vessel.

2. The mixing device of claim 1.

3. A top plate portion is provided opposite to an upper opening of the inner cylinder, The lower surface of the top plate portion has an inclined surface that is inclined downward at the center in the planar direction.

3. A mixing device according to claim 1 or 2.

4. A mixing device for mixing two or more objects to be mixed, A cylindrical member; At least one upward flow generating unit that generates an upward flow in an outer flow space formed outside the cylindrical member or an inner flow space formed inside the cylindrical member; at least one of an inner swirling flow generating section that causes the flow in the inner flow space to swirl and an outer swirling flow generating section that causes the flow in the outer flow space to swirl; Equipped with The inner flow space and the outer flow space are connected to each other at the upper side and the lower side of the cylindrical member, and are configured to be able to form a circulation flow path that circulates the two or more objects to be mixed, The inner swirl flow generating portion and the outer swirl flow generating portion each have a plurality of blade portions provided at predetermined intervals, The plurality of blade portions have a shape curved in the circumferential direction of the cylindrical member and are configured to be non-rotatable. Mixing equipment.

5. A mixing method for mixing two or more objects to be mixed, comprising the steps of: An inflow step of inflowing the mixture into a mixing vessel including an outer cylinder and at least one inner cylinder provided inside the outer cylinder; a circulating step of circulating the mixture by generating an upward flow in an outer flow space formed between the outer cylinder and the inner cylinder or in an inner flow space formed inside the inner cylinder; Including, In the circulating step, at least one of the flow in the inner flow space and the flow in the outer flow space is made to swirl by a plurality of blade portions provided at predetermined intervals, The plurality of blades are curved in the circumferential direction of the inner cylinder and are configured to be non-rotatable. Mixing method.

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