CN113557079B - Stirring vane assembly and stirring tank - Google Patents
Stirring vane assembly and stirring tank Download PDFInfo
- Publication number
- CN113557079B CN113557079B CN202080018978.4A CN202080018978A CN113557079B CN 113557079 B CN113557079 B CN 113557079B CN 202080018978 A CN202080018978 A CN 202080018978A CN 113557079 B CN113557079 B CN 113557079B
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- stirring blade
- stirring
- liquid
- tank
- rotation axis
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- 238000003756 stirring Methods 0.000 title claims abstract description 177
- 239000007788 liquid Substances 0.000 claims abstract description 104
- 239000000463 material Substances 0.000 abstract description 9
- 235000013399 edible fruits Nutrition 0.000 description 15
- 230000005484 gravity Effects 0.000 description 12
- 239000002245 particle Substances 0.000 description 11
- 238000013019 agitation Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000003908 quality control method Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 235000013162 Cocos nucifera Nutrition 0.000 description 1
- 244000060011 Cocos nucifera Species 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 235000013618 yogurt Nutrition 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/19—Stirrers with two or more mixing elements mounted in sequence on the same axis
- B01F27/191—Stirrers with two or more mixing elements mounted in sequence on the same axis with similar elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/19—Stirrers with two or more mixing elements mounted in sequence on the same axis
- B01F27/192—Stirrers with two or more mixing elements mounted in sequence on the same axis with dissimilar elements
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
The invention provides a stirring blade assembly and a stirring tank, which can generate uniform mixing state when materials with different specific weights are mixed. The stirring blade assembly (10) is provided in a tank (9) for storing the liquid (Q1), and is used for stirring the liquid (Q1). The stirring blade assembly (10) is provided with: a 1 st stirring blade (1) which is provided at the bottom (91) of the tank (9) and is supported so as to be rotatable about a rotation axis (11) parallel to the vertical direction, and which, when rotated, causes a liquid (Q1) to flow in a direction away from the rotation axis (11) and then flows to an upper 1 st liquid flow (FL 1) along a side wall portion (92) of the tank (9); and a 2 nd stirring blade (2A) and a 2 nd stirring blade (2B) which are arranged above the 1 st stirring blade (1). The 2 nd stirring blades (2A) and 2 nd stirring blades (2B) are rotatably supported around a rotation shaft (11), and when rotated, the liquid (Q1) is caused to flow downward in the vertical direction while being away from the rotation shaft (11), and the 2 nd liquid flow (FL 2) of the 1 st liquid flow (FL 1) is not blocked.
Description
Technical Field
The present invention relates to a stirring blade assembly and a stirring tank.
Background
A stirrer for stirring a liquid is known (for example, refer to patent document 1). The mixer described in patent document 1 includes: a stirring tank; an upper inclined blade supported by the stirring shaft; and a bottom blade supported by the stirring shaft and disposed below the upper inclined blade. The stirrer described in patent document 1 can stir the liquid in the stirring tank by rotating the upper inclined blade and the bottom blade around the stirring shaft. The rotation diameter of the upper inclined blade is the same as the rotation diameter of the bottom blade.
Technical literature of the prior art
Patent literature
Patent document 1: japanese patent laid-open No. 2009-220083
Disclosure of Invention
Technical problem to be solved by the invention
However, in the mixer described in patent document 1, since the rotation diameter of the upper inclined blade is the same as the rotation diameter of the bottom blade, there is a possibility that an upward flow generated by the rotation of the bottom blade and a downward flow generated by the rotation of the upper inclined blade cancel each other out. At this time, for example, the liquid is rotated together with the rotation of the blade in the stirring tank, and thus there is a problem as follows: even if materials having different specific gravities are mixed together, the mixed state of the materials with each other becomes uneven (i.e., mixing unevenness occurs).
The purpose of the present invention is to provide a stirring blade assembly and a stirring tank that can generate a uniform mixed state when materials having different specific weights are mixed, for example.
Means for solving the technical problems
An embodiment of the present invention provides a stirring blade assembly provided in a tank for storing a liquid, the tank having a bottom and a side wall, and stirring the liquid, the stirring blade assembly including:
a 1 st stirring blade which is provided at the bottom portion and is supported so as to be rotatable about a rotation axis parallel to a vertical direction, and which, when rotated, causes the liquid to generate a 1 st liquid flow which flows in a direction away from the rotation axis and then flows upward along the side wall portion; and
A 2 nd stirring blade provided above the 1 st stirring blade,
the 2 nd stirring blade is supported rotatably about the rotation axis, and when rotated, causes the liquid to flow downward in the vertical direction while being away from the rotation axis, and does not obstruct the 2 nd liquid flow of the 1 st liquid flow.
An embodiment of the present invention provides a stirring tank, comprising:
a tank having a bottom and for storing a liquid; and
The stirring vane assembly according to the above embodiment is provided in the tank and is used for stirring the liquid.
Effects of the invention
According to the present invention, the 1 st liquid flow and the 2 nd liquid flow stably generate convection currents that descend near the rotation axis and ascend near the side wall portion. By this convection, materials having different specific gravities can be stirred to uniformly mix the materials.
Drawings
Fig. 1 is a partial vertical cross-sectional side view showing embodiment 1 of the stirring tank of the present invention.
Fig. 2 is a sectional view taken along line A-A in fig. 1.
Fig. 3 is a sectional view taken along line B-B in fig. 2.
Fig. 4 is a sectional view taken along line C-C in fig. 1.
Fig. 5 is a sectional view taken along line D-D in fig. 1.
Fig. 6 is a diagram showing a state of a liquid flow in the agitation tank shown in fig. 1 when the agitation tank is operated.
Fig. 7 is a side view showing embodiment 2 of the stirring tank of the present invention.
Fig. 8 is a side view showing a stirring blade assembly provided in a stirring tank (embodiment 3) according to the present invention.
Fig. 9 is a vertical cross-sectional view showing a stirring blade assembly provided in a stirring tank (embodiment 4) according to the present invention.
Detailed Description
Hereinafter, preferred embodiments of the stirring vane assembly and the stirring tank according to the present invention will be described in detail with reference to the accompanying drawings.
< embodiment 1 >
Fig. 1 is a partial vertical cross-sectional side view showing embodiment 1 of the stirring tank of the present invention. Fig. 2 is a sectional view taken along line A-A in fig. 1. Fig. 3 is a sectional view taken along line B-B in fig. 2. Fig. 4 is a sectional view taken along line C-C in fig. 1. Fig. 5 is a sectional view taken along line D-D in fig. 1. Fig. 6 is a diagram showing a state of a liquid flow in the agitation tank shown in fig. 1 when the agitation tank is operated. In the following description, for convenience of explanation, the upper side in fig. 1, 3, 4, and 6 is referred to as "upper (or upper)", and the lower side is referred to as "lower (or lower)" (the same applies to fig. 7 to 9).
In this embodiment, as an example of the application of the agitation tank, a case will be described in which pulp and juice are mixed by the agitation tank 100 to produce pulp and juice. The stirring tank 100 shown in fig. 1 includes a tank 9 and a stirring blade assembly 10 provided in the tank 9. The configuration of each part will be described below.
The groove 9 has: a bottom 91 protruding in a dome shape toward the lower (outer) side; and a side wall portion 92 which is erected upward from the bottom portion 91 and is cylindrical. The tank 9 is capable of storing the liquid Q1 in the space 93 surrounded by the bottom 91 and the side wall 92. In addition, as described above, when pulp and juice are produced by the agitation tank 100, in the present embodiment, the liquid Q1 is juice, and the fruit particles Q2 mixed with the liquid Q1 are pulp particles.
In the present embodiment, the inner diameter Φd of the side wall 92 92 Ratio H/D of height H from bottom 91 to liquid level LS of liquid Q1 92 Is set in a range of 1 to 1.2.
The tank 9 may have a baffle (baffle). At this time, when the stirring blade assembly 10 is rotated by being operated, the liquid Q1 can be prevented from rotating together with the stirring blade assembly 10.
A stirring blade assembly 10 is provided in the tank 9. The stirring vane assembly 10 serves to stir the liquid Q1 and the fruit pieces Q2. The stirring blade assembly 10 includes: a rotation shaft 11 parallel to the vertical direction; a 1 st stirring blade 1 supported by the rotation shaft 11; and the 2 nd stirring blades 2A and 2 nd stirring blade 2B supported on the rotating shaft 11 above the 1 st stirring blade 1.
The lower side of the rotation shaft 11 is connected to a driving unit 12.
The driving unit 12 is a driving source for rotating the rotary shaft 11 in the arrow α direction together with the 1 st stirring blade 1, the 2 nd stirring blade 2A, and the 2 nd stirring blade 2B, and is configured to have a motor, for example.
The rotation speed of the rotary shaft 11 by the driving unit 12 is, for example, preferably 30rpm to 300rpm, more preferably 40rpm to 250 rpm. This enables the 1 st liquid flow FL1 and the 2 nd liquid flow FL2 to be described later to be appropriately generated.
The 1 st stirring blade 1 is provided on the bottom 91 side of the tank 9. As shown in fig. 1 and 2, the 1 st stirring blade 1 includes a hub 3 and two plate-like members 4 supported by the hub 3 in a cantilever manner. The number of the plate-like members 4 included in the 1 st stirring blade 1 is two in the present embodiment, but the present invention is not limited to this, and may be one or three or more, for example.
The hub 3 has a cylindrical shape, and the rotary shaft 11 is inserted inside the cylindrical shape. The hub 3 is fixed to the rotary shaft 11. Thereby, the 1 st stirring blade 1 is supported rotatably about the rotation shaft 11. The method of fixing the boss 3 is not particularly limited, and for example, a welding method, a screw fixing method, or the like may be used.
Each plate-like member 4 protrudes in a direction intersecting the rotation axis 11 (in the present embodiment, in a direction orthogonal thereto). The plate-like members 4 protrude from the boss 3 (the rotary shaft 11) in directions opposite to each other, respectively.
Each plate-like member 4 is formed in a flat plate shape arranged parallel to the vertical direction.
With such a plate-like member 4, when the 1 st stirring vane 1 rotates, the 1 st liquid flow FL1 (see fig. 6) can be generated in which the liquid Q1 collides with the side wall portion 92 after flowing in a direction away from the rotation shaft 11 and flows upward along the side wall portion 92.
The end of each plate-like member 4 opposite to the rotation shaft 11 has an inclination angle θ with respect to the rotation shaft 11 (i.e., the vertical direction) 41 An inclined portion 41. By the inclined portion 41, when the liquid Q1 collides with the side wall portion 92 during the generation of the 1 st liquid flow FL1 of the liquid Q1, the collision can be alleviated. From the following componentsIn this case, for example, the liquid flow that flows upward along the side wall 92 after colliding with the side wall 92 can be sufficiently ensured, and therefore the 1 st liquid flow FL1 can be stably generated. Since the liquid Q1 is discharged obliquely upward from the inclined portion 41, the liquid Q1 promotes the flow of the liquid upward along the side wall portion 92. In addition, the inclination angle θ 41 The present invention is not particularly limited, and is preferably 30 ° or more and 60 ° or less, more preferably 40 ° or more and 50 ° or less, for example. This can moderately alleviate the collision with the side wall 92.
The lower portion of each plate-like member 4 has a curved portion 42 curved along the dome-like bottom portion 91. This can reduce the gap between each plate-like member 4 and the bottom portion 91 as much as possible, and thus can prevent the 1 st liquid flow FL1 from being blocked by the liquid flow generated between each plate-like member 4 and the bottom portion 91.
The 2 nd stirring blade 2A and the 2 nd stirring blade 2B are provided (arranged) above the 1 st stirring blade 1 in the vertical direction. This structure is suitable for H/D 92 The value of (2) is 1 to 1.2, and convection CV described later can be stably generated in the groove 9.
The 2 nd stirring blade 2A of the 2 nd stirring blades 2A and 2 nd stirring blade 2B is disposed on the lower side, and the 2 nd stirring blade 2B is disposed on the upper side. The 2 nd stirring blade 2A and the 2 nd stirring blade 2B are separated from each other by a distance SD which is equal to the diameter phiD of the 2 nd stirring blade 2A 2 Is in the range of 0.3 times or more and 0.5 times or less.
Since the 2 nd stirring blade 2A and the 2 nd stirring blade 2B are identical in structure except for the arrangement positions, only the 2 nd stirring blade 2A will be described as a representative.
As shown in fig. 1, the 2 nd stirring blade 2A is separated from the 1 st stirring blade 1, and the 2 nd stirring blade 2A has a hub 5, a 1 st protruding portion 6 cantilever-supported to the hub 5, and a 2 nd protruding portion 7 cantilever-supported to the opposite side of each 1 st protruding portion 6 from the hub 5. When the 2 nd stirring blade 2A rotates, the 2 nd liquid flow FL2 (see fig. 6) which is directed downward in the vertical direction and is away from the rotation shaft 11 can be generated in the liquid Q1.
The hub 5 has a cylindrical shape, and the rotary shaft 11 is inserted inside the cylindrical shape. The hub 5 is fixed to the rotary shaft 11. Thereby, the 2 nd stirring blade 2A is supported rotatably about the rotation shaft 11. As shown in fig. 3, the method of fixing the boss 5 is a method of welding and fixing in the present embodiment. The welded portion 13 is provided at a boundary portion between the hub 5 and the rotary shaft 11.
Each 1 st projection 6 projects in a direction intersecting the rotation axis 11 (in the present embodiment, in a direction orthogonal thereto). The 1 st projection 6 projects from the hub 5 (the rotary shaft 11) in directions opposite to each other, respectively.
Each 1 st projection 6 is formed of a flat 1 st plate-like member. As shown in fig. 4, each 1 st projection 6 is inclined at an angle θ relative to the horizontal direction 6 Tilting. As a result, when the 2 nd stirring blade 2 rotates, the liquid Q1 can be caused to flow into the liquid flow FL2-1 (see fig. 6) which is vertically downward. In addition, the inclination angle θ 6 The present invention is not particularly limited, and is preferably 15 ° or more and 75 ° or less, more preferably 30 ° or more and 60 ° or less. Thereby, the liquid flow FL2-1 can be moderately generated.
Width (average width) W of 1 st projection 6 6 A width (average width) W of the plate-like member 4 smaller than the 1 st stirring blade 1 4 For example, set to a width W 4 5% to 50%.
The 1 st projecting portions 6 are formed of a flat plate-like member in the present embodiment, but are not limited to this, and may be formed of a prismatic member.
The 2 nd protrusion 7 is disposed at an end of each 1 st protrusion 6. The interval between the 2 nd protrusions 7 gradually increases as going downward in the vertical direction. That is, each of the 2 nd protruding portions 7 protrudes obliquely downward from the 1 st protruding portion 6. As a result, the liquid flow of the 2 nd liquid flow FL2 directed obliquely downward can be formed, and the liquid flow of the liquid Q1 distant from the rotation shaft 11 is also generated to be introduced to the rotation shaft 11 side, so that the flow of the 1 st liquid flow FL1 (upward flow) is not easily blocked. In addition, the 2 nd protrusion 7 has an inclination angle θ with respect to the rotation axis 11 7-1 The angle is not particularly limited, and is preferably 5 ° or more and 60 ° or less, for exampleMore preferably 10 ° or more and 30 ° or less.
Here, if the 2 nd projecting portions 7 project from the 1 st projecting portion 6 directly downward (i.e., vertically downward), the liquid flow of the liquid Q1 may flow only directly downward (vertically downward), and the 1 st liquid flow FL1 may be introduced. On the other hand, if the 1 st projection 6 is shortened so as not to introduce the 1 st liquid flow FL1, stirring is only generated around the rotation shaft 11, and sufficient stirring cannot be achieved.
Each of the 2 nd projecting portions 7 is constituted by a flat plate-like 2 nd plate-like member. As shown in fig. 5, each 2 nd protrusion 7 is inclined at an angle θ with respect to a tangential line TA direction at the 2 nd protrusion 7 passing through the virtual circle CL of each 2 nd protrusion 7 centering on the rotation axis 11 7-2 Tilting. Accordingly, when the 2 nd stirring blade 2 rotates, the liquid Q1 can be caused to flow into the liquid flow FL2-2 (see fig. 6) which flows into the rotating shaft 11 after flowing into the direction away from the rotating shaft 11. In addition, the inclination angle θ 7-2 The present invention is not particularly limited, and is preferably 5 ° or more and 75 ° or less, more preferably 30 ° or more and 60 ° or less. Thereby, the 2 nd protrusion 7 is inclined at an angle θ from the 1 st protrusion 6 7-1 The combination of structures protruding obliquely downward enables a moderate liquid flow FL2-2 to be produced.
Also, as shown in FIG. 6, the 2 nd liquid stream FL2 is produced by the combination of liquid stream FL2-1 and liquid stream FL2-2.
The 1 st liquid flow FL1, the 2 nd liquid flow FL2, the liquid flow FL2-1, the liquid flow FL2-2 may be confirmed by, for example, visualization through various fluid simulation experiments or other fluid experiments using computational fluid dynamics (computational fluid dynamics, abbreviation: CFD).
In the stirring tank 100, the diameter phiD of the 2 nd stirring blade 2A 2 Diameter phi D smaller than the 1 st stirring blade 1 1 For example, the diameter phiD is preferable 1 More preferably from 30% to 100%, and still more preferably from 50% to 80%. Thus, the 2 nd liquid flow FL2 is less likely to merge with the 1 st liquid flow FL1, and the 1 st liquid flow FL1 is not hindered. Also, by the 1 st liquid flow FL1 and the 2 nd liquid flow FL2, stability can be ensuredA convection CV is generated so as to be stationary, which falls near the rotation shaft 11 and rises near the side wall 92. By this convection CV, the liquid Q1 and the fruit pieces Q2 having different specific gravities can be stirred, and the liquid Q1 and the fruit pieces Q2 can be uniformly mixed without breaking the shape (without breaking) of the fruit pieces Q2. The mixture Q3 is discharged from the tank 9 and then transported to the next step (for example, into a commodity container) to be placed in a state where it can be sold.
Next, a case where the mixing state of the liquid Q1 and the fruit pieces Q2 having different specific gravities is uneven (i.e., there is uneven mixing) will be considered. At this time, the material having a lower specific gravity is discharged from the tank 9 after the material having a higher specific gravity. For example, when the specific gravity of the liquid Q1 is low and the specific gravity of the fruit particles Q2 is high, the fruit particles Q2 are in a large amount in the container for commodity manufactured first, and then the fruit particles Q2 are in a small amount in the container for commodity manufactured later, which is not preferable in terms of quality control. In contrast, when the specific gravity of the fruit particles Q2 is low and the specific gravity of the liquid Q1 is high, the fruit particles Q2 are small in the container for commodity manufactured first, and the fruit particles Q2 are large in the container for commodity manufactured later, which is not preferable in terms of quality control.
In contrast, when the liquid Q1 and the fruit pieces Q2 having different specific gravities are mixed in the stirring tank 100, for example, a mixture Q3 having a uniform mixing state can be produced. Thus, the mixture Q3 having a constant ratio of the liquid Q1 to the fruit pieces Q2 is preferably formed in each of the commodity containers regardless of the order of the commodity containers manufactured.
As described above, each 2 nd protrusion 7 is cantilever-like supported. Accordingly, the centrifugal force acting on each of the 2 nd protrusions 7 changes based on the rotation speed of the rotation shaft 11, and the inclination angle θ changes accordingly 7-1 Changes may also occur. If the inclination angle theta 7-1 The liquid flow FL2-2 is changed. Therefore, the 2 nd liquid flow FL2 can be adjusted according to the rotation speed of the rotation shaft 11.
And the width (average width) W of the 2 nd protrusion 7 (2 nd plate-like member) 7 A width W smaller than the 1 st projection 6 (1 st plate-like member) 6 For example, youSelected as width W 6 More preferably from 20% to 80%, and still more preferably from 40% to 60%. Thus, for example, the magnitude relationship between the magnitude of the liquid flow FL2-1 generated by the 1 st projection 6 and the magnitude of the liquid flow FL2-2 generated by the 2 nd projection 7 becomes a magnitude relationship to such an extent that the 2 nd liquid flow FL2 can be moderately generated. Further, since the 2 nd protrusion 7 is cantilever-supported by the 1 st protrusion 6, the "width W" is defined 7 Width W 6 "preferably has a width W as it is away from the rotation axis 11, in terms of both the load applied to the 2 nd protrusion 7 and the strength of the 2 nd stirring blade 2A and the 2 nd stirring blade 2B 7 Smaller and less loaded. Thus, the method has the following advantages: the plate thicknesses of the flat plates of the 2 nd protrusion 7 and the 1 st protrusion 6, etc. can be reduced, and the connection structure of the connection portion (support portion) of the cantilever becomes simple.
< embodiment 2 >
Fig. 7 is a side view showing embodiment 2 of the stirring tank of the present invention.
Hereinafter, embodiment 2 of the stirring blade assembly and the stirring tank according to the present invention will be described with reference to the drawings, but the points different from the above embodiments will be described with emphasis, and the description thereof will be omitted for the same matters.
In this embodiment, the configuration is the same as that of embodiment 1 except that the number of the 2 nd stirring blades is different from that of embodiment 1.
As shown in fig. 7, in the present embodiment, the stirring vane assembly 10 includes a 2 nd stirring vane 2A, a 2 nd stirring vane 2B, a 2 nd stirring vane 2C, and a 2 nd stirring vane 2D, which are disposed in this order from the lower side toward the upper side. This structure is suitable for H/D 92 The value of (2) is 1.7 to 2.2, and convection CV can be stably generated in the groove 9.
In addition, when the 2 nd stirring blade 2D is omitted, it is suitable for H/D 92 A value of 1.2 or more and 1.7 or less.
< embodiment 3 >
Fig. 8 is a side view showing a stirring blade assembly provided in a stirring tank (embodiment 3) according to the present invention.
Hereinafter, embodiment 3 of the stirring blade assembly and the stirring tank according to the present invention will be described with reference to the drawings, but the points different from the above embodiments will be described with emphasis, and the description thereof will be omitted for the same matters.
In this embodiment, the configuration of the stirring vane 2 is the same as that of embodiment 2 except that the configuration is different from that of embodiment 2.
As shown in fig. 8, in the present embodiment, each of the 2 nd stirring blade 2A, the 2 nd stirring blade 2B, the 2 nd stirring blade 2C, and the 2 nd stirring blade 2D has one 1 st protruding portion 6 and a 2 nd protruding portion 7 supported by the 1 st protruding portion 6.
The protruding directions of the 1 st protruding portions 6 of the 2 nd stirring blade 2A and the 2 nd stirring blade 2C are the same.
The protruding direction of the 1 st protruding portion 6 of the 2 nd stirring blade 2B and the 2 nd stirring blade 2D is the same, but opposite to the protruding direction of the 1 st protruding portion 6 of the 2 nd stirring blade 2A and the 2 nd stirring blade 2C.
In comparison with the stirring vane assembly 10 of embodiment 2, when such a stirring vane assembly 10 is used, the size of the 2 nd liquid flow FL2 can be suppressed even at the same rotation speed, and for example, the structure is effective when the fruit pieces Q2 are easily crushed.
< embodiment 4 >
Fig. 9 is a vertical cross-sectional view showing a stirring blade assembly provided in a stirring tank (embodiment 4) according to the present invention.
Hereinafter, embodiment 4 of the stirring blade assembly and the stirring tank according to the present invention will be described with reference to the drawings, but the points different from the above embodiments will be described with emphasis, and the description thereof will be omitted for the same matters.
In this embodiment, the configuration of the 2 nd stirring blade is the same as that of embodiment 1 except that the configuration is different from that of embodiment 1.
As shown in fig. 9, in the present embodiment, the hub 5 of the 2 nd stirring blade 2A is fixed to the rotary shaft 11 by screw fixation. An internal thread 51 is formed in the boss 5.
The screw 14 is screwed to the female screw 51. The screw 14 is engaged with a recess 111 formed in the outer peripheral portion of the rotary shaft 11. Thereby, the hub 5 can be fixed to the rotation shaft 11, and the hub 5 can be positioned with respect to the rotation shaft 11.
While the stirring blade assembly and the stirring vessel according to the present invention have been described above with reference to the illustrated embodiment, the present invention is not limited to this, and each part constituting the stirring blade assembly and the stirring vessel may be replaced with any structure capable of performing the same function. Further, any structure may be additionally provided.
The stirring blade assembly and the stirring tank according to the present invention may be configured by combining any two or more of the above-described embodiments.
The stirring tank (stirring blade assembly) is applied to mixing pulp particles and juice in the above embodiments, but is not limited thereto, and for example, any material having a different specific gravity can be used, and the application method is not limited. For example, in the case of food products, the stirring tank may be applied to mixing coconut particles with liquid yogurt or the like. In addition, the stirring tank may be used to prepare a slurry such as cement by mixing metal powder with oil and mixing clay or limestone with water.
In the above embodiments, the rotation direction of the 1 st stirring blade is the same as the rotation direction of the 2 nd stirring blade, but the present invention is not limited thereto, and the rotation directions may be opposite to each other, for example. In this case, the rotation shaft may be formed of two members arranged concentrically.
In the above embodiments, the rotation speed of the 1 st stirring blade is the same as the rotation speed of the 2 nd stirring blade, but the rotation speed is not limited to this, and may be different, for example.
The rotation speed of the plurality of 2 nd stirring blades is the same in each of the above embodiments, but the rotation speed is not limited to this, and may be gradually reduced or increased as it goes upward.
The diameters of the plurality of 2 nd stirring vanes are the same in each of the above embodiments, but the present invention is not limited thereto, and the diameters may be gradually reduced as they go upward.
Symbol description
100-stirring tank, 10-stirring blade assembly, 1-1 st stirring blade, 2A, 2B-2 nd stirring blade, 3-boss, 4-plate-like member, 41-inclined portion, 42-bent portion, 5-boss, 51-female screw, 6-1 st protruding portion, 7-2 nd protruding portion, 9-tank, 91-bottom, 92-side wall portion, 93-space, 11-rotation shaft, 111-concave portion, 12-driving portion, 13-welded portion, 14-screw, CL-imaginary circle, CV-convection, phiD 1 Diameter, phiD 2 Diameter, phiD 92 -inner diameter, H-height, FL 1-1 st liquid flow, FL2-2 nd liquid flow, FL 2-1-liquid flow, FL 2-2-liquid flow, LS-liquid level, TA-tangent, SD-separation distance, Q1-liquid, Q2-fruit particles, Q3-mixture, W 4 Width (average width), W 6 Width (average width), W 7 Width (average width), alphA-Arrow, theta 41 -inclination angle, θ 6 -inclination angle, θ 7-1 -inclination angle, θ 7-2 -an inclination angle.
Claims (10)
1. A stirring blade assembly provided in a tank for storing a liquid, the tank having a bottom and a side wall, and stirring the liquid, the stirring blade assembly comprising:
a 1 st stirring blade which is provided at the bottom portion and is supported so as to be rotatable about a rotation axis parallel to a vertical direction, and which, when rotated, causes the liquid to generate a 1 st liquid flow which flows in a direction away from the rotation axis and then flows upward along the side wall portion; and
A 2 nd stirring blade provided above the 1 st stirring blade and supported rotatably about the rotation axis,
the 2 nd stirring blade has: a 1 st protruding portion protruding in a direction intersecting the rotation axis; and a 2 nd protruding portion arranged at an end of the 1 st protruding portion and protruding obliquely downward,
the 1 st protruding part is inclined relative to the horizontal direction to form a 2 nd liquid flow which flows to the vertical lower part,
the 2 nd protruding portion is inclined with respect to a tangential direction of a circle passing through the 2 nd protruding portion centering around the rotation axis, thereby forming a 3 rd liquid flow flowing to the rotation axis side after being away from the rotation axis,
the 2 nd liquid flow and the 3 rd liquid flow do not obstruct the 1 st liquid flow.
2. The stirring blade assembly of claim 1, wherein the stirring blade assembly comprises a stirring blade,
the 1 st protruding part is composed of a 1 st plate-shaped component which is inclined relative to the horizontal direction and takes a plate shape,
the 2 nd protruding portion is formed of a 2 nd plate-like member having a plate shape and inclined with respect to a tangential direction of a circle passing through the 2 nd protruding portion with respect to the rotation axis as a center.
3. A stirring blade assembly as set forth in claim 2, wherein,
the width of the 2 nd plate-like member is smaller than the width of the 1 st plate-like member.
4. A stirring blade assembly as set forth in any one of claims 1 to 3,
the 1 st protruding portion is disposed in two from the rotation shaft, and the 2 nd protruding portion is disposed on each of the two 1 st protruding portions.
5. The stirring blade assembly of claim 4, wherein the stirring blade assembly comprises a stirring blade,
the interval between the 2 nd protruding parts gradually increases towards the lower part of the vertical direction.
6. A stirring blade assembly as set forth in any one of claims 1 to 3,
the 2 nd stirring blade is provided with a plurality of stirring blades along the vertical direction.
7. A stirring blade assembly as set forth in any one of claims 1 to 3,
the 1 st stirring blade has a plate-like member protruding in a direction intersecting the rotation axis, and is arranged parallel to the vertical direction and in a plate shape.
8. The stirring blade assembly of claim 7, wherein the stirring blade assembly comprises a stirring blade,
an end of the plate-like member opposite to the rotation axis is inclined with respect to the rotation axis.
9. A stirring blade assembly as set forth in any one of claims 1 to 3, characterized in that,
the diameter of the No. 2 stirring blade is smaller than that of the No. 1 stirring blade.
10. A stirring tank is characterized by comprising:
a tank having a bottom and for storing a liquid; and
The stirring vane assembly of any one of claims 1 to 9 disposed within said tank and for stirring said liquid.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019-114510 | 2019-06-20 | ||
| JP2019114510A JP7277278B2 (en) | 2019-06-20 | 2019-06-20 | Stirring blade assembly and stirring vessel |
| PCT/JP2020/009773 WO2020255491A1 (en) | 2019-06-20 | 2020-03-06 | Mixing blade assembly and mixing tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113557079A CN113557079A (en) | 2021-10-26 |
| CN113557079B true CN113557079B (en) | 2024-02-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202080018978.4A Active CN113557079B (en) | 2019-06-20 | 2020-03-06 | Stirring vane assembly and stirring tank |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP7277278B2 (en) |
| KR (1) | KR20220020799A (en) |
| CN (1) | CN113557079B (en) |
| TW (1) | TWI727700B (en) |
| WO (1) | WO2020255491A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113289515A (en) * | 2021-05-12 | 2021-08-24 | 南京医科大学附属口腔医院 | Powder water stirrer |
| CN114345197A (en) * | 2022-01-20 | 2022-04-15 | 东营华亚国联航空燃料有限公司 | High-efficient agitating unit of aviation fuel oil |
| CN114672191B (en) * | 2022-05-16 | 2023-04-28 | 广东富德实业有限公司 | Ester-soluble polyurethane ink, preparation device and preparation method thereof |
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- 2020-03-06 KR KR1020217028666A patent/KR20220020799A/en not_active Application Discontinuation
- 2020-03-06 WO PCT/JP2020/009773 patent/WO2020255491A1/en active Application Filing
- 2020-03-12 TW TW109108186A patent/TWI727700B/en active
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Also Published As
| Publication number | Publication date |
|---|---|
| CN113557079A (en) | 2021-10-26 |
| JP7277278B2 (en) | 2023-05-18 |
| TW202100236A (en) | 2021-01-01 |
| WO2020255491A1 (en) | 2020-12-24 |
| TWI727700B (en) | 2021-05-11 |
| JP2021000589A (en) | 2021-01-07 |
| KR20220020799A (en) | 2022-02-21 |
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