JP2011140016A - Mixing agitator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mixing agitator applicable for wide-range uses. <P>SOLUTION: A pump chamber part and a fluid agitation part arranged on its lower stream side are connected together in series to a motor, at least the pump chamber part and the fluid agitation part are arranged in a liquid, a discharge passage sucking the fluid and discharging it to the fluid agitation part side is formed in the pump chamber part, and other fluid than the liquid is made to inflow through a discharge passage to the fluid agitation part, whereby a mixture body is made by mixing and agitating these liquid and fluid at the fluid agitation part, and is conveyed out from the fluid agitation part. Therefore, a mixing and agitation efficiency is excellent, and the mixing agitator is made applicable for wide-range uses. For example, when a gas and a liquid are mixed and agitated, so ultrafine bubbles as of a nearly micro or submicro level are produced by the gas, and an ultrafine gas-bubble generator is applicable for feeding the liquid containing such gas bubbles to a required place. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention mixes and agitates multiple types of fluids (for example, gas and liquid, liquid and liquid, or particles and powder as a solid and liquid) to form a mixture, and the mixture is ultrafine. The present invention relates to a mixing and stirring device that can be made uniform and uniform. For example, when mixing and stirring a gas and a liquid, the mixing and stirring device converts the gas into micro-level (several μm to several hundreds μm) or sub-micro level (1 μm or less) ultrafine bubbles. It can also be used as an ultrafine bubble generating device that supplies a gas-liquid mixture (bubble mixed liquid) in which bubbles are mixed in a liquid.

  Conventionally, as disclosed in Patent Document 1, as one form of the fine bubble generating device, the leading end opening of the air introduction pipe is opened toward the rotation center of the impeller disposed in the pump chamber of the turbo pump. There is something that let me. Such a fine bubble generating device supplies air from the tip opening of the air introduction pipe toward the impeller, so that the impeller sucks the supplied air and pushes it strongly in the centrifugal direction. In this way, when the air is strongly pushed out by the impeller, the air is refined by the rapid pressure change so that the air is uniformly mixed as fine bubbles in the liquid.

Japanese Patent No. 2646442

  However, since the fine bubble generator described above supplies air toward the rotation center of the impeller having a small negative pressure, the air suction efficiency by the impeller is not good. Therefore, there is a problem that the bubble generation (bubble generation) efficiency is low. In addition, microbubbles are formed by micronizing air by abrupt pressure change when pumped together with liquid. In such a microbubble generator, microlevel or sub-microlevel bubbles are not generated. Almost no formation. Therefore, there is a problem that applicable uses are limited.

  Therefore, the present invention, for example, in the case of mixing and stirring a gas and a liquid, generates a gas that has been micronized to a micro level or a sub micro level, and generates a super fine bubble with a wide range of applicable applications. An object of the present invention is to provide a mixing and stirring device that can also be used as a device.

  As means for solving the above-mentioned problems, the present invention is characterized in that it is configured as follows.

  The mixing and agitating device according to the first aspect of the present invention has a pump chamber portion and a fluid agitating portion arranged downstream thereof connected to the electric motor portion in series, and at least the pump chamber portion and the fluid agitating portion are in liquid. And forming a discharge channel for sucking the liquid into the pump chamber and discharging it to the fluid stirring unit side, and another fluid in addition to the liquid is allowed to flow into the fluid stirring unit through the discharge channel, A fluid stirring unit mixes and stirs these liquids and fluids to form a mixture, and the mixture is transported from the fluid stirring unit.

  In such a mixing and stirring device, the liquid and other fluids that have flowed in through the discharge channel can be mixed and stirred by the fluid stirring unit to form a mixture, and the mixture can be carried out to a required place. At this time, since the fluid agitation unit is disposed on the downstream side of the pump chamber, the plurality of types of fluids are pumped to the fluid agitation unit through the discharge channel. The plurality of types of fluids pumped to the fluid agitation unit are smoothly flown into the fluid agitation unit, and are finely refined and mixed and agitated by the fluid agitation unit. As a result, good mixing and stirring efficiency can be ensured. And it can be set as the mixing stirring apparatus applicable to a wide use. For example, when mixing and stirring a gas and a liquid, an ultra-fine bubble generator that supplies gas to a required place by making the gas into micro-bubbles that have been micronized to the micro level or sub-micro level. Can be At this time, since the gas is taken in from the discharge flow path, that is, the position downstream of the pump chamber and the upstream of the fluid agitating unit, adverse effects on the pump chamber due to the gas, for example, air biting are avoided. be able to. Moreover, since the pump chamber part and the fluid agitation part are linked and integrated with the electric motor part, the pump chamber part and the fluid agitation part can be made compact and the transport performance can be improved.

  The mixing and stirring apparatus according to the invention of claim 2 is the mixing and stirring apparatus according to the invention of claim 1, wherein the fluid stirring section is provided with a stirring chamber communicating with the discharge port of the pump chamber section, A pair of plate-like stirring bodies are arranged in a face-to-face state in the stirring chamber, and the rotation center part of at least one of these stirring bodies and the rotation center part of the impeller arranged in the pump chamber part, Coaxially mounted on the drive shaft extended from the electric motor part, the stirring body and the impeller can be integrally rotated, and the two stirring bodies meander in the radiation direction from the central part toward the peripheral part. In addition, an agitation channel that extends while being formed is formed, and an inflow port is formed in the center of the other agitator, and the agitation channel and the outside of the agitation chamber are communicated with each other through the inflow port.

  In such a mixing and agitating device, at least one of the agitator and the impeller that are coaxially attached to the drive shaft are integrally rotated to agitate the liquid that has flowed in through the discharge passage and the other fluid through the inlet. It can be caused to flow into the flow path. These fluids that flow in the radial direction while meandering in the stirring channel generate shearing forces due to viscosity and turbulence, and these fluids are subjected to shearing action to be refined and mixed uniformly. Stir. At this time, when only one stirring member is attached to the drive shaft and rotated integrally, relative displacement occurs between the other stirring member that is fixed and does not rotate. Therefore, a cutting force is generated in the fluid between one rotating stirring member and the other fixed stirring member. Therefore, the fluid flowing in the stirring channel receives a cutting force in a rotational direction different from the shearing force in the meandering direction. As a result, a plurality of types of fluids are subjected to the cooperative action of shearing force and cutting force in different directions, and are refined and made uniform. And mixing and stirring performance are improved. For example, gases and solids can be made ultrafine (micro level or sub-micro level) and uniform quickly and consistently by the cooperative action of shearing action and cutting action.

  Moreover, a pair of stirring bodies can also rotate both stirring bodies and an impeller integrally by attaching a rotation center part to the said drive shaft. In this case, the fluid flowing through the stirring channel is subjected to a shearing action only in the meandering direction.

  A mixing and stirring apparatus according to a third aspect of the present invention is the mixing and stirring apparatus according to the second aspect, wherein the peripheral wall of the stirring chamber is formed in a cylindrical shape extending in the axial direction of the drive shaft, and the stirring chamber The axial line position is deviated from the axial line position of the drive shaft.

  In such a mixing and stirring device, the fluid that flows out from the end portion of the stirring channel as a radiant flow swirls and flows in the stirring chamber as a swirling flow, and is carried out to a predetermined place. At this time, since the axial position of the stirring chamber is deviated (eccentric) from the axial position of the drive shaft, the swirling flow swirling in the stirring chamber can be made turbulent, improving mixing and stirring efficiency. To achieve homogenization (homogenization).

  A mixing and stirring apparatus according to a fourth aspect of the present invention is the mixing and stirring apparatus according to the third aspect, wherein a plurality of the stirring chambers are arranged in a skewered manner on the drive shaft and communicated with each other in a heavy box shape. A stirring body in which the pump chamber of the pump chamber portion is communicated with the lowermost stirring chamber, and the liquid and another fluid other than the fluid are arranged in each stirring chamber through the discharge passage formed in the pump chamber. The mixture is mixed and stirred to form a mixture, and the mixture is unloaded from the uppermost stirring chamber.

  In such a mixing and stirring device, a plurality of stirring chambers each provided with a stirring body are arranged in a skewered manner on the drive shaft, and are communicated with each other in a heavy box shape. The fluid can be smoothly moved to the stirring chamber. At this time, since the mixture can be sequentially mixed and stirred multiple times with the stirring bodies disposed in the respective stirring chambers, the mixture can be steadily made ultrafine and uniform. The number of stirring chambers stacked in a heavy box shape can be easily increased or decreased as appropriate according to the processing target to be mixed and stirred. Further, the mixing and stirring device itself can be made compact.

  The present invention has the following effects. That is, it can be applied to a wide range of uses as a mixing and stirring device. Here, examples of applications to which the mixing and stirring apparatus according to the present invention can be applied include deoxygenation treatment in treated water by nitrogen substitution (reduction treatment of dissolved oxygen amount), increase in dissolved oxygen amount in agricultural water, and the like. There are treatment, dissolution treatment of water-soluble fertilizer, purification treatment of sewage and waste liquid, anti-rotation treatment of organic impurities, breeding of aquatic animals, hydroponics. In addition, for example, when mixing and stirring gas and liquid, the gas is made into bubbles that have been micronized to the micro level or sub-micro level, and can be used as an ultra-fine bubble generator with a wide range of applicable applications. Is possible.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partially cutaway explanatory view of an ultrafine bubble generating device as a stirring device (first embodiment) according to the present invention. Cross-sectional bottom explanatory drawing of the II line direction view of FIG. Sectional plane explanatory drawing of the II-II line direction view of FIG. FIG. 3 is a cross-sectional plan view taken along line III-III in FIG. 1. Explanatory drawing of the bottom face of a movable side stirring body. Plane explanatory drawing of a stationary side stirring body. Bottom explanatory drawing which shows the basic form of both stirring bodies. IV-IV sectional explanatory drawing of FIG. FIG. 6 is a partially cutaway explanatory view of an ultrafine bubble generating device as a stirring device (second embodiment) according to the present invention. Cross-sectional side explanatory drawing of the middle part of an ultrafine bubble generator. Cross-sectional side explanatory drawing of the lower part of an ultrafine bubble generator. FIG. 10 is a cross-sectional plan view of the VV line direction view of FIG. 9. Explanatory drawing of a cross section of the VI-VI line direction view of FIG. Explanatory drawing of a cross section of the VII-VII line direction view of FIG. Bottom explanatory drawing which shows the basic form of both stirring bodies.

The form for implementing this invention is as follows.
[First Embodiment]
A shown in FIG. 1 is the ultrafine bubble generating device of the first embodiment as a mixing and stirring device according to the present invention, and B is a liquid storage part. In the liquid storage part B, a liquid C such as water is stored, and the ultrafine bubble generating device A is arranged in the liquid C. D is the bottom surface of the liquid reservoir B. The liquid reservoir B is not limited to a tank or the like that artificially stores the liquid C to be processed, but also includes a lake or the like in which the liquid C to be processed is naturally stored.

  As shown in FIG. 1, the ultrafine bubble generator A integrally connects a fluid agitation unit 20 to the lower end of the electric motor unit 1 and interlocks a pump chamber 60 to the lower end of the fluid agitation unit 20. It is configured. Here, the pump chamber 60 driven by the electric motor unit 1 constitutes a non-volumetric turbo pump. In this embodiment, the electric motor unit 1 and the pump chamber 60 are integrated into the liquid C. The arrangement can be used.

  The ultrafine bubble generating device A configured as described above is arranged in the liquid C to be processed, and the liquid C is sucked by the pump chamber 60 and discharged to the fluid stirring unit 20 side. At this time, on the downstream side of the pump chamber 60 and the upstream side of the fluid agitation unit 20, another type of fluid (in this embodiment, gas E) is sucked so that a plurality of types of fluids (in this embodiment, liquids are used). C and gas E) are pumped toward the fluid stirring unit 20. Then, the liquid C and the gas E that are pressure-fed to the fluid stirring unit 20 are mixed and stirred by the fluid stirring unit 20. As a result, a mixture in which the gas E is ultrafine and uniform (in this embodiment, a liquid containing ultrafine bubbles) is generated, and the mixture is transported to a required place.

  Hereinafter, the configuration of the ultrafine bubble generating device A will be described more specifically with reference to FIGS.

  As shown in FIG. 1, the electric motor unit 1 extends a drive shaft 4 having an axis line in the vertical direction downward from the lower end surface portion 3 of the electric motor case 2. Reference numeral 5 denotes an electric cable. A plate-like mounting body 10 is connected to the lower end surface portion 3 of the motor case 2 by a connecting bolt 11. The fluid stirring portion 20 and the pump chamber portion 60 are integrally attached to the attachment body 10 via a plurality of (four in this embodiment) attachment bolts 12 extending in the vertical direction. Reference numeral 17 denotes a carry-out hose connected to the attachment body 10. The carry-out hose 17 communicates with a stirring chamber 22 described later so as to carry out the mixture. Reference numeral 18 denotes a stay for supporting the ultrafine bubble generating device A in the liquid C through the attachment body 10. Reference numeral 19 denotes a mounting bolt.

  As shown in FIGS. 1 and 2, the fluid stirring unit 20 includes a stirring chamber 22 formed in a casing body 21, and a movable side stirring body 23 as one stirring body and the other stirring body in the stirring chamber 22. The fixed side stirring body 24 is arranged. A required number (two in the present embodiment) of fluid agitating units 20 are arranged on the drive shaft 4 in a skewered manner, and communicate with each other in a heavy box shape.

  As shown in FIG. 1, the casing body 21 has an upper surface opening from a cylindrical peripheral wall forming piece 25 whose axis is directed in the vertical direction and a disk-like bottom forming piece 26 stretched on the lower end of the peripheral wall forming piece 25. It is formed in a box shape.

  As shown in FIG. 1, a stepped fitting concave portion 27 is formed on the peripheral edge of the upper end of the peripheral wall forming piece 25. The stepped fitting concave portion 27 is connected in a close contact state by fitting from a lower portion through a O-ring (not shown) to a stepped fitting convex portion 13 formed in a downwardly bulging shape on the lower surface of the mounting body 10. is doing. A support portion 28 that bulges upward is formed near the center of the bottom forming piece 26.

  As shown in FIGS. 1, 2, and 8, the support portion 28 is formed in a cylindrical support piece 29 having an axis line in the vertical direction and an inward projecting shape on the inner peripheral surface of the upper end of the support piece 29. The plate-shaped upper surface piece 30 is formed. On the upper surface piece 30, a disk-like support main piece 31 is connected in a superposed state by a connecting bolt 32. The outer diameter of the support main piece 31 is formed to be substantially the same as the outer diameter of the stationary stirring member 24. 33 and 34 are communication holes formed in the upper surface piece 30 and the support main piece 31, respectively. The communication holes 33 and 34 also function as insertion holes through which the peristaltic shaft 4 is inserted.

  As shown in FIG. 2, the axial position of the stirring chamber 22, that is, the axial position of the peripheral wall forming piece 25 is deviated by a certain width with respect to the axial position of the drive shaft 4. In the present embodiment, the width of the outer diameter of the stationary stirring member 24 is biased by about one-sixth.

  As shown in FIG. 1, a rotation center portion of a disk-shaped movable side stirring body 23 is attached to the middle portion of the drive shaft 4. The movable stirring member 23 can be rotated integrally with the drive shaft 4. As shown in FIG. 8, a disk-shaped fixed-side stirring body 24 is arranged in a face-to-face manner at a position directly below the movable-side stirring body 23 with a constant gap t (for example, around 1 mm). An inflow port 35 is formed in the central portion of the fixed side stirring body 24, and an agitating flow path 36 formed in the radial direction from the inflow port 35 in the central portion is formed between both the stirring bodies 23 and 24. Then, in the stirring chamber 22, the liquid C and the gas E are mixed and stirred by both the stirring bodies 23 and 24, and a liquid containing ultrafine bubbles as a mixture is generated.

  The movable side stirring body 23 and the fixed side stirring body 24 will be described more specifically with reference to FIGS.

  As shown in FIG. 5, the movable-side stirring body 23 is formed in a radial direction and a circular shape on the lower surface of the movable-side main body 40 formed in a constant-thick disk shape, except for the central portion 41 and the outer peripheral portion 42 having a constant width. In the circumferential direction, hexagonal channel-forming recesses 43 having a bottom view are formed in an orderly and dense manner to form a honeycomb shape.

  Here, as shown in FIG. 8, the central portion 41 of the movable side body 40 is flush with the lower surface of the flow path forming recess 43, while the outer peripheral portion 42 is the upper surface and surface of the flow path forming recess 43. It is done. A drive shaft insertion hole 44 is formed at the center of the upper surface of the movable side main body 40, and a cylindrical connecting piece 45 is connected to the upper surface of the movable side main body 40 so as to communicate with the drive shaft insertion hole 44. is doing. 46 is a bolt hole formed in a transversely penetrating manner in the middle portion of the cylindrical connecting piece 45, 47 is a fixing bolt, and the bolt hole 46 is in a state where the cylindrical connecting piece 45 is fitted in the middle portion of the drive shaft 4. The cylindrical connecting piece 45 is fastened and fixed to the drive shaft 4 by screwing the fixing bolt 47 onto the drive shaft 4.

  As shown in FIG. 6, the fixed-side stirring body 24 is substantially the same shape as the above-described movable-side main body 40, i.e., at the central portion of the fixed-side main body 50 formed with substantially the same thickness and substantially the same outer diameter. A flow passage forming recess 53 having a hexagonal shape in a bottom view in the radial direction and the circumferential direction is formed on the upper surface of the stationary main body 50 except for the outer peripheral portion 52 having a constant width on the upper surface of the fixed-side main body 50. It is neatly formed densely and has a honeycomb shape. The shape of the flow path forming recesses 43 and 53 is not limited to the hexagonal shape in the bottom view. For example, it can also be formed in a semispherical concave shape.

  And the fixed side stirring body 24 is connected with the superposition | polymerization state by the connection bolt 55 on the support piece 31 provided in the support part 28, as shown in FIG. The inflow port 35 of the stationary stirring body 24 is matched with the communication holes 33 and 34 (see FIG. 2).

  As shown in FIG. 7, the flow path forming recesses 43 and 53 formed in both the stirring bodies 23 and 24 face each other in a shifted state as a basic form. That is, the center portion of the three adjacent flow path forming recesses 43 is positioned at the center portion of the one flow path forming recess portion 53 facing, and the center portions of the three adjacent flow path forming recess portions 53 are The liquid C and the gas E, which are to be stirred, are positioned between the two flow path forming recesses 43 and 53 at the center of the one flow path forming recess 43 facing each other. 43 (53) is divided (dispersed) into two flow path forming recesses 53 (43) facing each other, and one flow path forming recess 53 (facing from the two flow path forming recesses 43 (53)) 43), a stirring channel 36 that flows in the radial direction while meandering is formed so as to join (collect) 43).

  An outlet 38 is formed between the outer peripheral portion 42 of the movable-side stirring body 23 and the outer peripheral portion 52 of the fixed-side stirring body 24 as an outflow portion that opens over the entire circumference of the outer peripheral edge. The mixed and stirred mixture flows out from the outlet 38.

  In both the stirring bodies 23 and 24 having such a basic form, as shown in FIGS. 7 and 8, the movable side stirring body 23 is connected to the drive shaft 4 while maintaining a constant gap t between the movable side stirring body 23 and the fixed side stirring body 24. It is integrally rotated in the rotation direction X (clockwise in plan view).

  Therefore, the liquid C and the gas E, which are the objects to be stirred, are separated (dispersed) while meandering in the stirring channel 36 in the vertical direction from the inlet 35 on the central side toward the outlet 38 on the outer peripheral edge by centrifugal force. By repeating the merging (aggregation), it flows in the radial direction and flows out from the outlet 38 formed at the peripheral edge.

  Here, the gas E and the liquid C flowing in the meandering direction are subjected to a shearing action in the meandering direction and a cutting action in the rotation direction X of the movable stirring body 23. As a result, the liquid C and the gas E are mixed and agitated by flowing while being subjected to a shearing action and a cutting action in the resultant direction of the meandering direction and the rotational direction X, and the ultrafine refinement of the gas E in the liquid C is achieved. Uniformity is achieved steadily.

  In addition, since the movable-side stirring body 23 and the fixed-side stirring body 24 are relatively displaced around the axis, the area where the flow path forming concave portion 43 and the flow path forming concave portion 53 communicate with each other is periodically changed. To do. That is, the flow is divided (dispersed) into two flow path forming recesses 53 (43) facing from one flow path forming recess 43 (53), and is also faced from the two flow path forming recesses 43 (53). The communication area at the time of merging (collecting) into one flow path forming recess 53 (43) periodically changes. Therefore, the liquid C and the gas E, which are the objects to be stirred, repeatedly form a pulsating flow. The pulsating flow is a flow in which the flow path cross-sectional area changes periodically. When the pulsating flow is repeatedly formed, a local high pressure portion and a local low pressure portion are generated in the fluid. In such a fluid, when a low-pressure part (for example, a negative pressure part such as a vacuum part) occurs locally, a so-called foaming phenomenon occurs, gas is generated in the liquid, or minute bubbles expand (explode). Or a phenomenon called so-called cavitation occurs in which the generated gas (bubbles) collapses (disappears). By the force generated when such a cavitation phenomenon occurs, gas is refined and fluid mixing is promoted.

  In this embodiment, as shown in FIG. 1, a stepped fitting concave portion 27 of the casing body 21 formed in the same manner is fitted from below into the lower portion of the casing body 21 formed as described above via an O-ring. By doing so, the two fluid stirring parts 20, 20 are connected in a close contact state.

  As shown in FIGS. 1, 3 and 4, the pump chamber 60 forms a pump chamber 62 in the casing body 61. An impeller 63 is disposed in the pump chamber 62, and the center portion of the impeller 63 is attached to the lower end portion of the drive shaft 4.

  As shown in FIG. 1, the casing body 61 is formed in a box shape having an upper surface opening by placing a cylindrical peripheral wall forming piece 64 having an axis line in the vertical direction on a disk-like bottom forming piece 65. is doing. Here, the lower end portion of the peripheral wall forming piece 64 is detachably fitted in a groove portion 81 formed in the peripheral edge portion of the bottom portion forming piece 65. A stepped fitting recess 66 is formed on the peripheral edge of the upper end of the peripheral wall forming piece 64. Reference numeral 85 denotes a cylindrical support leg piece integrally formed on the peripheral edge of the bottom surface of the bottom forming piece 65. Reference numeral 86 denotes a plurality of inflow openings formed in the peripheral wall of the support leg 85, and the liquid C in the liquid storage part B is sucked into the suction port 70 through the inflow openings 86.

  As shown in FIG. 1, the stepped fitting concave portion 66 is connected to the lower portion of the casing body 21 located at the lowermost step through an O-ring (not shown) so as to be in close contact. ing. A bearing portion 67 for receiving the lower end portion of the drive shaft 4 is provided at a position near the center of the bottom portion forming piece 65 so as to bulge downward.

  As shown in FIGS. 1, 3, and 4, the impeller 63 is arranged so as to rotate integrally with the drive shaft 4 on the bottom forming piece 65, and is arranged above the bearing portion 67. Yes. The bearing portion 67 is formed of a cylindrical peripheral wall forming piece 68 whose axis is directed in the vertical direction, and a disc-shaped bearing forming piece 69 stretched on the lower end of the peripheral wall forming piece 68. A plurality of suction ports 70 are formed in the peripheral wall forming piece 68 at intervals in the circumferential direction. A suction passage 71 for sucking fluid into the pump chamber 62 through the suction port 70 is formed by the rotation of the impeller 63. The bearing forming piece 69 is formed with a pivotal recess, and the lower end of the drive shaft 4 is pivotally supported by a bearing 72 disposed in the pivotal recess.

  As shown in FIGS. 1 and 4, a swirl flow guide body 73 is integrally formed on the bottom forming piece 65. The swirl flow guide body 73 has a guide side surface 82 that guides the fluid swirled by the rotation of the impeller 63 in the swivel direction, and the guide side surface 82 is formed to be curved in the guide direction. A swirl flow path 74 is formed along the swirl flow guide body 73. A discharge flow path forming body 75 is disposed on the swirling flow guide body 73.

  As shown in FIGS. 1 and 3, the discharge flow path forming body 75 includes a disk-shaped shielding piece 76 that shields a portion directly above the impeller 63, and a bottom portion of the casing body 21 that positions the shielding piece 76 at the lowest level. It is formed from four attachment pieces 77 attached to the formation piece 26 in a hanging manner. A discharge passage 78 is formed between the shielding piece 76 and the bottom forming piece 26 so as to flow upward on the drive shaft 4 side and along the drive shaft 4. 79 is a screw.

  Here, the upstream end of the swirl flow path 74 communicates with the downstream end of the suction flow path 71, the upstream end of the discharge flow path 78 communicates with the downstream end of the swirl flow path 74, and the downstream end of the discharge flow path 78 The communication holes 33, 34 communicate with the agitation channel 36, and the communication holes 33, 34 communicate with the agitation channel 36. Then, the communication hole 80 communicates with the communication holes 33 and 34 of the second stage fluid agitation unit 20 via the communication channel 80, and the communication holes 33 and 34 communicate with the agitation channel 36, and finally the unloading hose 17. A series of continuous flow paths communicating with each other are formed. Mixing / stirring is performed firmly in two stirring channels 36 in the continuous channel.

  1, 3, and 4, reference numeral 87 denotes a hook-shaped locking piece that protrudes outward from the upper portion of the support leg piece 85. The locking piece 87 is formed with four bolt insertion holes 89 penetrating in the vertical direction at intervals in the circumferential direction. The mounting bolts 12 are inserted into the respective bolt insertion holes 89 from below, and the heads of the mounting bolts 12 are locked to the locking pieces 87 from below to be mounted on the female screw portions 14 formed on the mounting body 10. By screwing the male screw part 15 formed at the tip of the bolt 12, the two fluid stirring parts 20, 20 are sandwiched between the electric motor part 1 and the pump chamber part 60. Reference numeral 88 denotes a reinforcing piece.

  In this way, the ultrafine bubble generating device A can release the sandwiched state of the fluid agitating units 20 and 20 by removing the tip of the mounting bolt 12 screwed into the female threaded portion 14 of the mounting body 10. . Then, the fluid agitating unit 20 and the pump chamber 60 that are interlocked and connected to the drive shaft 4 in a skewered manner are slid downward along the drive shaft 4 so that they can be removed from the drive shaft 4. . Moreover, the fluid stirring parts 20 and 20 can be made into the clamping state by following the reverse procedure. Therefore, the fluid stirring unit 20 stacked in a heavy box shape can be freely attached to and detached from the drive shaft 4, and the number of the increase / decrease adjustment operations can be easily performed.

  In FIG. 1 and FIG. 3, reference numeral 90 denotes a pipe-like fluid supply unit, and a distal end side supply body 91 is attached to the casing body 61 so as to protrude inward, and a proximal end side supply is provided to the proximal end portion of the distal end side supply body 91. The body 92 is connected in communication, and the base end side supply body 92 is piped along the peripheral wall forming piece 25. In the present embodiment, a required amount of gas E such as nitrogen, oxygen, or air is supplied from the fluid supply unit 90 into the casing body 21.

  In this manner, the liquid C and the gas E are sucked from the inflow port 35 by the discharge pressure from the pump chamber 60 and the suction pressure generated by the rotation of the movable stirring body 23. Then, it flows into the stirring channel 36 and is mixed and stirred by flowing in the radial direction and the rotational direction X, and flows out from the outlet 38 which is the end of the stirring channel 36 into the stirring chamber 22 as a mixture. Is done. The mixture that has flowed into the stirring chamber 22 is carried out to a required place through the carrying-out hose 17. At this time, since the gas E is supplied from the downstream side of the pump chamber 60, it is possible to avoid the gas E from adversely affecting the impeller 63 and the like of the pump chamber 60.

  In the ultrafine bubble generating apparatus A configured as described above, the following structures can be applied in appropriate combination.

  At least one of the movable-side stirring body 23 and the fixed-side stirring body 24 disposed in a face-to-face state can be adjusted to advance and retract in the face-to-face direction, and the constant gap t facing each other can be adjusted. Then, according to the type of gas E or solid that is to be mixed and stirred with the liquid C, it is possible to realize appropriate ultrafine miniaturization and uniformization by adapting the constant gap t. For example, by adjusting the vertical mounting position of the cylindrical connecting piece 45 shown in FIG. 8 on the drive shaft 4 via the fixing bolt 47, the movable side stirring body 23 is moved back and forth with respect to the fixed side stirring body 24. Can be adjusted.

  In addition, the fixed-side stirring body 24 can be rotated integrally by connecting the movable-side stirring body 23 to the movable-side stirring body 23 with a connecting screw or the like in the above-mentioned basic form without being connected to the support main piece 31 It can also be. In this case, the liquid C and the gas E flow in the radiation direction while meandering in the vertical direction along the stirring flow path 36 by centrifugal force. At this time, the liquid C and the gas E are flowed while receiving a shearing action. In addition, both the stirring bodies 23 and 24 which rotate integrally can be applied also when a plurality of stirring chambers 22 are continuously formed in the axial direction of the drive shaft 4. Therefore, for example, the movable side stirring body 23 and the fixed side stirring body 24 are arranged in the upper stage (downstream side) stirring chamber 22 to rotate only the movable side stirring body 23, while the lower stage (upstream side) stirring chamber. It is also possible to arrange both stirring bodies 23 and 24 that rotate integrally in 22. In this case, the gas E is refined by the two stirring bodies 23 and 24 that rotate integrally in the lower stirring chamber 22, and both the stirring bodies 23 in which only the movable stirring body 23 rotates in the upper stirring chamber 22. , 24, the gas E can be further refined by further stirring. Moreover, both the stirring bodies 23 and 24 which rotate integrally in the upper and lower stirring chambers 22 can be arranged.

  Further, a baffle plate (not shown) extending in the vertical direction is disposed in the stirring chamber 22, and the baffle plate is allowed to act on the mixture that flows out of the outlet 38 and turns into a swirling flow, whereby the mixture Can be a turbulent flow that also flows in the vertical direction. In this case, the homogenization (homogenization) of the mixture is improved.

[Second Embodiment]
FIGS. 9-15 is the ultrafine bubble generating apparatus A as 2nd Embodiment, The same basic structure as above-mentioned 1st Embodiment, but the upper and lower casing bodies 21 and 21 of each other is the same. The connection structure and the fixing structure of the fixed stirring member 24 are greatly different.

  That is, as shown in FIG. 10, the casing body 21 has an upper connecting piece 100 and a lower connecting piece 110 formed in a bowl shape at the upper peripheral edge and the lower peripheral edge of a cylindrical peripheral wall forming piece 25 whose axis is directed in the vertical direction. It is formed by overhanging. The upper connecting piece 100 has an upper surface 101 formed as a flat surface, and the upper surface 101 is positioned slightly below the upper end surface 102 of the peripheral wall forming piece 25. A fitting recess 27 is formed by the upper surface 101 and the outer peripheral surface of the upper end portion of the peripheral wall forming piece 25. An O-ring insertion groove 103 is formed in the inner peripheral edge of the upper surface 101, and the O-ring 104 is inserted into the O-ring insertion groove 103. The lower connecting piece 110 forms a fitting recess 111 into which the upper edge 105 of the peripheral wall forming piece 25 is fitted at the inner peripheral edge, and a fitting convex 112 to be fitted into the fitting recess 27 at the outer peripheral edge. is doing. A connection hole 188 for connecting the carry-out hose 17 is provided in the uppermost casing body 21.

  Thus, when connecting the upper and lower casing bodies 21, 21 to each other, the lower casing body 21 is formed in the fitting recess 111 of the lower connecting piece 110 formed in the upper casing body 21. The upper peripheral edge portion 105 of the peripheral wall forming piece 25 is fitted, and the upper connecting piece 100 formed on the lower casing body 21 is fitted to the fitting convex portion 112 of the lower connecting piece 110 formed on the upper casing body 21. The combination recess 27 is fitted from below. Then, in this state, the upper and lower casing bodies 21 and 21 are integrated with each other by tightening (fastening) the upper and lower connecting pieces 100 and 110 with a fastening connector (so-called clamp band) 200. Link. Further, by releasing the tightening of the upper and lower connecting pieces 100, 110 by the tightening connector 200, the connection between the upper and lower casing bodies 21, 21 can be released.

  As shown in FIGS. 10 and 11, the fixed-side agitator 24 includes a ring-plate-like support 120 connected to the lower surface of the fixed-side main body 50 in a superposed state, and the outer peripheral edge 121 of the support 120 is outside. It has an overhanging shape (saddle shape). The outer peripheral edge 121 of the support body 120 is disposed in the fitting recess 111 of the lower connecting piece 110 formed in the upper casing body 21 and is formed in the lower casing body 21 fitted in the fitting recess 111. The upper and lower connecting pieces 100 and 110 are integrally fastened by the fastening connector 200 by bringing the upper end peripheral edge portion 105 of the peripheral wall forming piece 25 into contact with the lower surface of the outer peripheral edge portion 121 of the support 120. The outer peripheral edge 121 of the body 120 is fixed in a clamped state by the upper and lower connecting pieces 100 and 110.

  Thus, the support body 120 is clamped between the upper and lower casing bodies 21 and 21 and fastened integrally. Moreover, the support body 120 can also be removed simultaneously by releasing the fastening between the casing bodies 21 and 21. Therefore, the disassembling and assembling work when performing the cleaning work and the maintenance work can be easily and quickly performed.

  As shown in FIG. 9, the drive shaft 4 of the second embodiment is interlocked with the output shaft 6 of the electric motor unit 1. That is, the output shaft 6 protrudes downward from the lower end surface portion 3 of the motor case 2, and the upper end portion of the drive shaft 4 formed by extending vertically from the lower end portion of the output shaft 6 via the interlocking coupling body 130 is detachable. It is linked to. Reference numeral 131 denotes a drive shaft support. The drive shaft support 131 is interposed between the lower end surface portion 3 of the electric motor case 2 and the mounting body 10, and the upper portion of the drive shaft 4 is rotated about the vertical axis. Supports freely. An insertion hole 132 through which the drive shaft 4 is inserted is formed in the central portion of the attachment body 10. Reference numeral 140 denotes an upper halfway bearing portion that is suspended from the mounting body 10. The midway bearing portion 140 hangs a cylindrical peripheral wall forming piece 141 from the mounting body 10 and, as shown in FIG. 10, a bush 143 via a bush support piece 142 at the lower end of the inner peripheral surface of the peripheral wall forming piece 141. And the bush 143 receives the middle part of the drive shaft 4 in a freely rotatable manner. A lower connecting piece 144 is formed in a flange shape at the lower end of the outer peripheral surface of the peripheral wall forming piece 141. The lower connecting piece 144 forms an indentation recess 145 into which the upper peripheral edge 105 of the peripheral wall forming piece 25 formed in the casing body 21 is fitted in the inner peripheral edge, and the fitting recess 27 of the casing body 21 in the outer peripheral edge. A fitting convex portion 146 to be fitted is formed.

  Thus, when the casing body 21 is connected to the midway bearing portion 140, the upper end of the peripheral wall forming piece 25 formed in the casing body 21 is fitted into the fitting recess 145 of the lower connecting piece 144 formed in the peripheral wall forming piece 141. The peripheral portion 105 is inserted, and the fitting concave portion 27 of the upper connecting piece 100 formed in the casing body 21 is fitted from below to the fitting convex portion 146 of the lower connecting piece 144 formed in the peripheral wall forming piece 141. Then, in this fitted state, the upper and lower connecting pieces 100 and 144 are fastened by the fastening connector 200 to integrally connect the upper and lower casings 21 to each other.

  Stepped small-diameter portions 149 to 153 are formed at positions where the movable-side stirring body 23 which is a middle portion of the drive shaft 4 is attached. The stepped small-diameter portions 149 to 153 formed in five stages are formed so as to gradually become smaller diameter steps downward so that the movable-side stirring bodies 23 and the impellers 154 can be positioned. That is, as shown in FIGS. 10 and 11, the inner diameter of the drive shaft insertion hole 44 of the cylindrical connecting piece 45 of each movable side stirring body 23 is matched to the outer diameter of each stepped small diameter portion 149 to 153, The upward sliding is regulated. And it fixes to the drive shaft 4 by fixing with the fixed volt | bolt 47 through the bolt hole 46 formed in the cylindrical connection piece 45 in the position of each stepped small diameter part 149-152 where sliding to upper direction was controlled. The movable side stirring body 23 is linked and connected. Further, the cylindrical connecting piece 155 formed at the center portion of the impeller 154 is positioned by the stepped small diameter portion 153 and fixed by the fixing bolt 157 through the bolt hole 156 formed in the cylindrical connecting piece 155, so that the drive shaft An impeller 154 is interlocked to 4.

  As shown in FIGS. 11 and 14, the pump chamber 60 forms a pump chamber 62 in the casing body 61. An impeller 154 is disposed in the pump chamber 62, and the central portion of the impeller 154 is attached to the lower end portion of the drive shaft 4.

  As shown in FIG. 11, the casing body 61 is formed by projecting an upper connecting piece 170 in a hook shape on the upper outer peripheral surface of a cylindrical peripheral wall forming piece 160 whose axis is directed in the vertical direction. The upper connecting piece 170 has an upper surface 171 formed as a flat surface, and the upper surface 171 is positioned slightly below the upper end surface of the peripheral wall forming piece 160. A fitting recess 172 is formed by the upper surface 171 and the outer peripheral surface of the upper end portion of the peripheral wall forming piece 160. An O-ring insertion groove 174 is formed on the inner peripheral edge of the upper surface 171, and the O-ring 173 is inserted into the O-ring insertion groove 174.

  In this way, when the lowermost casing body 21 and the casing body 61 are connected, the peripheral wall forming piece 160 formed in the lower casing body 61 is inserted into the fitting recess 111 of the lower connecting piece 110 formed in the casing body 21. The upper peripheral edge 161 of the upper connecting piece 170 is fitted into the fitting convex portion 112 of the lower connecting piece 110 formed on the casing body 21, and the fitting concave portion 172 of the upper connecting piece 170 formed on the casing body 61 is fitted from below. In this state, the upper and lower connecting pieces 170 and 110 are fastened by the fastening connector 200 to integrally connect the upper and lower casing bodies 21 and 61 to each other.

  As shown in FIGS. 11 and 15, a lower end bearing portion 180 is attached to the lower portion of the inner peripheral surface of the casing body 61. The lower end bearing portion 180 includes a cylindrical attachment piece 181 attached to the inner peripheral surface of the peripheral wall forming piece 160 in a superposed state, a ring plate-like bearing peripheral portion 182 provided continuously with the upper surface of the attachment piece 181, and a bearing peripheral portion 182. It is formed from the bearing center part 184 attached to the center part of this through the support piece 183. The lower end portion of the drive shaft 4 is supported by the bearing center portion 184. Reference numeral 185 denotes a suction port formed between the bearing peripheral part 182 and the bearing center part 184 via a support piece 183. Reference numeral 186 denotes a screw for detachably connecting the peripheral wall forming piece 160 and the mounting piece 181. Reference numeral 187 denotes an attachment hole for attaching the fluid supply part 90.

  In the present embodiment, the ultrafine bubble generating device A as a mixing and stirring device has been described. However, a liquid or a solid such as a granule or powder is appropriately supplied from the fluid supply unit 90 in place of the gas to be mixed and stirred. By doing so, it can also be applied as a required mixing and stirring device.

A Ultra-fine bubble generator B Liquid storage part C Liquid D Bottom face part E Gas t Constant gap X Rotational direction 1 Electric motor part 20 Fluid stirring part 23 Movable side stirring body 24 Fixed side stirring body 60 Pump chamber part

Claims (4)

  A pump chamber and a fluid agitation unit disposed downstream of the electric motor unit are connected in series. At least the pump chamber and the fluid agitation unit are arranged in a liquid, and the pump chamber is inhaled with the liquid. Thus, a discharge flow path for discharging to the fluid stirring unit side is formed, and another fluid is allowed to flow into the fluid stirring unit through the discharge flow path, and the fluid stirring unit mixes and stirs these liquid and fluid. Then, the mixture is made into a mixture, and the mixture is unloaded from the fluid stirring unit. The fluid agitating unit is provided with an agitating chamber communicating with the discharge port of the pump chamber, and a pair of plate-like agitating bodies are arranged in a face-to-face state in the agitating chamber, and at least one of the agitating bodies is agitated. The rotation center of the body and the rotation center of the impeller disposed in the pump chamber are coaxially attached to the drive shaft extended from the electric motor, and the stirring body and the impeller rotate integrally. Possible and none,
Between the two stirring bodies, a stirring flow path that extends while meandering in the radial direction from the central portion toward the peripheral portion is formed, and an inflow port is formed in the central portion of the other stirring body. 2. The mixing and stirring device according to claim 1, wherein the stirring channel and the outside of the stirring chamber are communicated.   The peripheral wall of the stirring chamber is formed in a cylindrical shape extending in the axial direction of the drive shaft, and the axial position of the stirring chamber is deviated from the axial position of the drive shaft. Mixing and stirring device.   A plurality of the stirring chambers are arranged in a skewered manner on the drive shaft, and are overlapped and communicated with each other in a heavy box shape, and the pump chamber of the pump chamber portion is communicated with the lowermost stirring chamber to form the pump chamber. The liquid and another fluid other than the liquid are sequentially mixed and stirred by the stirring bodies disposed in the respective stirring chambers through the discharge channel to form a mixture, and the mixture is carried out from the uppermost stirring chamber. The mixing and stirring apparatus according to claim 3, wherein

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