JP2004261659A - Mixing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mixing apparatus which does not need mixing blades. <P>SOLUTION: A plurality of fluid materials 21a, 21b stored in material tanks 20a, 20b, respectively, are supplied to a fluid supply port of a nozzle 16 via variable throttle valves 24a, 24b. At this point, the fluid materials are not mixed uniformly. Subsequently, when the fluid materials are discharged from a fluid discharge opening, compressed air guided in from a gas supply port of the nozzle 16 forms a high-velocity vortex of the compressed air in front of the nozzle 16, and the vortex crushes the discharged fluid materials into fine grain shapes, mixing the materials together to form a uniform mixture 13, which is subsequently stored in a batch bath 10. When the mixture stored in the batch bath 10 is subjected to a re-mixing process, the mixture in the batch bath is discharged from a discharge port 15 and supplied to the nozzle 16 via a re-supply pipe 18. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a mixing device for uniformly mixing fluid materials such as a culture solution, a paint, a drug solution, oil, and water, and more particularly to a mixing device that can be used for accelerating a biochemical reaction, a microbial reaction, and other various reactions. .
[0002]
[Prior art]
The mixing operation is one of the indispensable operations in chemical engineering and the like. That is, it is used for a wide range of uses such as reaction, extraction, absorption, and mixing in the field of foods, cosmetics, medicines, pharmaceuticals, paints, and the like. In a bioreactor for culturing aerobic microorganisms, a mixing operation for aeration is used.
[0003]
Generally, mixing means a purpose or process, and the method or operation for achieving mixing is usually referred to as agitation when targeting a fluid of normal viscosity. The stirring operation includes batch stirring and continuous stirring. Hereinafter, the batch stirring will be mainly described.
[0004]
An important point in stirring (especially stirring of a high-viscosity liquid) is the fluid state in the container, and how to move and disperse the treatment liquid throughout the container. In this case, the viscosity of the fluid is affected by the physical properties of the mixture, that is, the viscosity, specific gravity, surface tension, wettability, and the like, and the most influential is the fluid.
[0005]
At present, there are many kinds of liquids handled in batch-type stirring operations in various fields, from low viscosity to high viscosity. In the case of stirring the low-viscosity liquid, even if the blade diameter is small, the whole can be sufficiently moved by local flow by installing three to four baffles on the tank wall. As the stirring blade, a propeller blade, an inclined paddle, a disk turbine blade, and the like are used. On the other hand, in the case of high-viscosity liquid agitation, due to the influence of viscosity, the discharge flow from the blades does not reach the entire tank and the number of circulations drops significantly, so both the blade diameter and blade width are large, and the ratio between the tank diameter and the blade diameter is The principle is to make it larger. Helical ribbon blades, anchor blades, and the like are used as the stirring blades.
[0006]
As described above, the optimum blade shape, blade diameter, rotation speed, and the like are different between the low-viscosity stirring operation and the high-viscosity stirring operation. However, in the stirring operation in each field, it is rare that the viscosity is almost constant, and as the stirring operation progresses, it is general to shift from a low viscosity to a high viscosity, or from a high viscosity to a low viscosity. is there.
[0007]
When shifting from low viscosity to high viscosity, use a high-speed rotating stirrer to disperse the powder and the like quickly in the tank, focusing on the operation of involving and dissolving solid chips and powder. There are many. On the other hand, when shifting from high viscosity to low viscosity, it is desirable to use a stirrer that allows the entire inside of the tank to flow in the initial high viscosity state, and attach large wings that have no dead space even at low speed.
[0008]
As described above, it is necessary to appropriately select a stirrer according to the change in viscosity, and when a single stirrer is used to perform a multi-stage stirring operation, a high / low speed combination stirrer (the entire low-speed type tank) is required. Introduced composite equipment such as flow and high-speed type with high dispersibility, and compound rotary stirrer (single-axis forward / reverse rotation double motion type, two-axis planetary motion type, reciprocating rotation type, etc.) I needed to.
[0009]
In addition, Patent Literature 1 below describes a liquid mixing device provided with a stirrer. Non-Patent Document 1 describes a ventilated stirring tank equipped with stirring blades as a basic form of a bioreactor for culturing aerobic microorganisms.
[0010]
[Patent Document 1]
JP-A-6-210209
[Non-patent document 1]
Shoichi Shimizu and Tsuneo Yamane, "Biological Chemistry Series of the Future (12) Bioreactor System", Kyoritsu Shuppan Co., Ltd., 1987, p. 81-83
[Non-patent document 2]
"Separate Volume Chemical Engineering Vol. 2 No. 1 Factory Operation Series Stirring / Kneading / Mixing", Chemical Engineering Co., Ltd., 1968, p. 1, p. 24-28
[0011]
[Problems to be solved by the invention]
However, the above-described combined type apparatus is expensive, and the wing shape is complicated, so that cleaning and the like are troublesome.
[0012]
In the stirring operation using the stirring blade, air is entrained from the free surface of the mixture around the stirring shaft. Particularly at high speeds, vortexing occurs on the free surface and considerable air enters the mixture. If it is desired to expel such air, some defoaming operation is required.In general, defoaming takes time even if the mixture has a low viscosity, and if the mixture has a high viscosity, it takes time. It is very difficult to apply.
[0013]
In addition, bioreactors need to be cleaned and sterilized periodically to prevent contamination of various germs.However, in the case of a ventilated stirred tank type equipped with stirring blades, the internal Is insufficient and bacteria are easily contaminated.
[0014]
An object of the present invention is to provide a mixing device that does not require the provision of a stirring blade.
[0015]
[Means for Solving the Problems]
A mixing device according to the present invention includes a container for containing a fluid material, a fluid discharge port for discharging the fluid material into the container, a fluid supply port communicating with the fluid discharge port, and the fluid A gas ejection port formed around the fluid ejection port so as to form a high-speed vortex of gas in front of the ejection port, and a nozzle having a gas supply port communicating with the gas ejection port; and A gas supply means for supplying the gas to a gas supply port; and a fluid circulation means for supplying fluid material in the container to the fluid supply port of the nozzle, wherein the fluid supply port of the nozzle is provided. The fluid material supplied to the nozzle is discharged from the fluid discharge port of the nozzle, is crushed by the high-speed vortex of the gas, and is jetted into the container in a uniform mixed state.
[0016]
In this case, a reduction means (for example, a serpentine tube) for reducing the kinetic energy of the fluid material ejected from the nozzle may be further provided in front of the nozzle.
[0017]
Further, the container may include an exhaust unit (for example, a filter) for discharging the gas discharged into the container by the nozzle to the outside of the container.
[0018]
Further, in order to charge the fluid material into the container, a fluid supply means for supplying the fluid material to the fluid supply port of the nozzle may be further provided.
[0019]
In this case, the fluid supply means may supply one type of fluid material to the fluid supply port of the nozzle, or a plurality of fluid materials may be mixed at a predetermined ratio, You may make it supply to the said fluid supply port of a nozzle.
[0020]
Further, when supplying a plurality of fluid materials, the fluid supply means may include a flow rate adjusting means for adjusting the ratio.
[0021]
The mixing device can be used as a reactor (for example, a bioreactor) in which a predetermined reaction proceeds in the container. Further, when the bioreactor is an aerobic microorganism culturing bioreactor, a gas containing oxygen (for example, air) may be supplied to the gas supply port of the nozzle.
[0022]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0023]
FIG. 1 is a diagram showing the overall configuration of a mixing device according to the present invention. The mixing apparatus mixes a plurality of fluid materials into a batch tank (container) while charging (preparing) the mixed materials. Further, even after completion of the charging, the mixture is used to promote a predetermined reaction in the batch tank. (Re) mixing can be performed.
[0024]
As shown in the figure, the mixing apparatus includes a batch tank 10 and a plurality of raw material tanks 20a and 20b.
[0025]
The batch tank 10 is a container for storing the fluid material supplied from the raw material tanks 20a and 20b. In the batch tank 10, a reaction using the supplied fluid material is performed.
[0026]
As shown in FIG. 1, the batch tank 10 is provided with a nozzle 16 for charging a fluid material into the tank. Further, the batch tank 10 includes an exhaust port 14 with a filter for discharging air in the tank.
[0027]
The raw material tank 20a is a fluid material tank for storing the fluid material 21a, is configured as a sealable pressure-resistant container, and opens a predetermined opening lid (not shown) before starting mixing. Then, an appropriate amount of the fluid material 21a is injected into the inside, and then the opening lid is sealed. The mixing apparatus is provided with a raw material tank 20b having the same configuration as the raw material tank 20a, and accommodates another fluid material 21b required for a predetermined reaction.
[0028]
A fluid feed pipe 22a is attached to the raw material tank 20a so as to penetrate through the wall of the tank from the outside to the inside of the tank, and the end of the fluid feed pipe 22a is attached to the raw material tank 20a. It is arranged so as to reach near the inner bottom surface, and a strainer 23a is attached to the end. The fluid feed pipe 22a is connected to the fluid feed pipe 25 via an electromagnetic variable throttle valve 24a as a flow control means. Similarly, a fluid feed pipe 22b extending from the inside of the raw material tank 20b is connected to the fluid feed pipe 25 via an electromagnetic variable throttle valve 24b. The tip of the fluid feed pipe 25 is connected to the fluid feed port of the nozzle 16.
[0029]
The fluid material supplied from the fluid feed pipe 25 is sent into the batch tank 10 via the nozzle 16. Further, an air supply pipe 61 as a gas supply means is also connected to the nozzle 16, and compressed air is supplied. An air pressure sensor 62, a pressure control valve 63, and a compressed air reservoir 64 are sequentially connected to the air supply pipe 61 toward the upstream side.
[0030]
As shown in FIG. 1, the mixing device includes a compressor 69. The compressor 69 is for generating compressed air, and the output of the compressed air is discharged to the pressure pipe 68 and then branched to the pressure pipes 26a, 26b, 66. The pressure pipes 26a and 26b are pipes for introducing compressed air into the upper space inside the raw material tanks 20a and 20b, respectively. Electromagnetic valves 27a and 27b are provided in the middle of the pipes, and the raw material tank 20a , 20b are provided with air pressure sensors 28a, 28b for detecting the air pressure inside the upper space. The pressure pipe 66 is a pipe for introducing compressed air into the compressed air reservoir 64. The pressure pipe 66 is provided with an electromagnetic valve 67 in the middle of the pipe, and is for detecting the air pressure inside the compressed air reservoir 64. An air pressure sensor 65 is provided.
[0031]
As will be described later in detail, a fluid discharge port communicating with the fluid supply port and a gas injection port formed around the fluid discharge port are provided at the tip of the nozzle 16. The two kinds of fluid materials 21a and 21b supplied to the fluid supply port of the nozzle 16 via the fluid supply pipe 25 are not uniformly mixed from the fluid discharge port of the nozzle 16 in a mixed state. A high-speed vortex of air ejected from the gas outlet is formed in front of the nozzle 16, and the fluid materials 21a and 21b discharged in a mixed state are crushed into fine particles by the high-speed vortex. The mixture is sprayed into the batch tank 10 as a spray-like mixture uniformly mixed with the vortex flow.
[0032]
The spray-like mixture ejected from the nozzle is diffused in a divergent conical shape and released to a wide area. However, since this spray-like mixture usually has a very high kinetic energy, the mixture in the batch tank 10 is kept as it is. When discharged, the particulate mixture floats in the batch tank 10 and does not readily descend toward the bottom of the batch tank 10. In order to suppress the mist and separate the mixture from the air, it is necessary to reduce the kinetic energy. Therefore, in the present mixing apparatus, the kinetic energy is reduced by attaching the serpentine tube 12 to the nozzle tip and passing the spray-like mixture ejected from the nozzle 16. The mixture 13 whose kinetic energy has been reduced by passing through the flexible tube 12 is dropped into the batch tank 10 from the discharge port of the flexible tube 12. Further, the air discharged from the discharge port of the flexible tube 12 passes through the filter 14 and is discharged out of the batch tank 10. The filter 14 allows only air to pass, but not the mixture.
[0033]
As described above, in the present mixing apparatus, the fluid material supplied to the fluid supply port of the nozzle 16 is crushed by the high-speed vortex of the gas in front of the nozzle immediately after being discharged from the fluid discharge port to be atomized. This results in a uniform mixing state. The mixture charged in the batch tank 10 in this manner hardly causes agglomeration, and usually does not require a secondary stirring operation.
[0034]
As shown in FIG. 1, the mixing apparatus includes a re-supply pipe 18 that connects the batch tank 10 and the fluid feed pipe 25 via a solenoid valve 19 as a fluid circulation means. That is, by opening the electromagnetic valve 19, a conduit connecting the batch tank 10 and the fluid feed pipe 25 can be formed, and the mixture in the batch tank 10 is (re) supplied to the fluid supply port of the nozzle 16. It becomes possible to do. The mixture supplied to the fluid supply port of the nozzle 16 is atomized by the nozzle 16, uniformly dispersed, and returned into the batch tank 10.
[0035]
As described above, in the present mixing apparatus, it is possible not only to mix the fluid materials when charging them into the batch tank 10, but also to remix them as needed after charging them into the batch tank 10.
[0036]
In the present mixing apparatus, the mixture in the batch tank 10 is circulated by the negative pressure generated by the compressed air supplied to the nozzle 16, but if the viscosity of the mixture in the batch tank 10 is high, the resupply pipe The pump 18 may be provided.
[0037]
In addition, the circulation of the mixture in the batch tank 10 through the resupply pipe 18 and the nozzle 16 can remove bubbles from the mixture when bubbles are generated in the mixture due to a reaction or the like performed in the batch tank 10. Can be used to do. That is, by passing the mixture through the nozzle 16, the mixture containing bubbles is crushed into fine particles, and as a result, a defoaming effect is obtained.
[0038]
When the present mixing apparatus is used as a bioreactor, circulation through the resupply pipe 18 and the nozzle 16 can be used for promoting culture. For example, in a conventional aerobic microorganism culturing bioreactor, a method of stirring while blowing air into a tank is widely used for supply of oxygen necessary for respiration of aerobic microorganisms and oxidation of microorganisms of a substrate. Since bacteria are easily destroyed by the stirring blade, selection of the stirring speed and selection of the shape of the stirring blade must be performed according to the purpose.
[0039]
According to the present mixing device, the culture solution is drawn in with air, and crushed into fine particles by a high-speed vortex formed in front of the nozzle 16, so that mechanical shear does not occur and the air contacts the air with an extremely small particle size. The contact area is significantly increased. Thereby, the bacterial culture speed can be remarkably improved.
[0040]
Furthermore, in the case of aiming for photosynthesis, a fluorescent lamp having been subjected to a waterproof treatment is installed in the batch tank 10 and the mixture dropped from the flexible tube 12 is irradiated with the fluorescent lamp. Irradiation efficiency can be improved as compared with the case of the fluorescent lamp irradiation.
[0041]
In culturing anaerobic microorganisms, it is conceivable to use nitrogen gas or carbon dioxide gas instead of air as the gas supplied to the nozzle 16.
[0042]
As shown in FIG. 1, the mixing device includes a control unit 30. The control unit 30 controls the operation of the mixing apparatus, monitors the outputs of the air pressure sensors 28a, 28b, 62 and 65, and controls the electromagnetic drive of the electromagnetic variable throttle valves 24a and 24b and the electromagnetic valves 27a, 27b and 67. Control and so on. The control unit 30 includes, for example, a central processing unit (CPU), a memory, various interface circuits, and the like. Further, a display device such as a CRT and an LCD, and an input device such as a keyboard are connected to the control unit 30 as necessary.
[0043]
As shown in FIG. 1, in the present mixing apparatus, a heating / cooling jacket 70 is provided on the outer periphery of the batch tank 10. The heating / cooling jacket 70 enables operation under a constant environment. The heating medium in a constant temperature water tank 71 controlled to a predetermined temperature is pumped by a pump 72 through an electromagnetic valve 73 and a water supply pipe 74. The water is fed into a water supply port 75 of a heating / cooling jacket 70, circulated through the jacket 70, discharged out of the jacket 70 through a drain port 76, and returned to a constant temperature water tank 71 via a water supply pipe 77.
[0044]
In the present mixing apparatus, when the fluid material is sent into the batch tank 10 through the nozzle 16, it is atomized and comes into contact with air, so that the area in contact with air increases. It will normally be cooled. Therefore, for example, in a case where heat is generated by a reaction proceeding in the batch tank 10 and the temperature of the fluid material in the batch tank 10 rises, the fluid material in the batch tank 10 is supplied with the resupply pipe 18 and the nozzle 16. The fluid material can be cooled by circulating through. Further, in the present mixing apparatus, it is not necessary to provide a stirring blade, and as a result, there is no heat which tends to be generated by the stirring operation by the stirring blade, so that the temperature control by the jacket or the like becomes easy.
[0045]
Next, the structure of the nozzle 16 will be described with reference to FIGS. 2A is a plan view of the nozzle, FIG. 2B is a sectional view of the nozzle, and FIG. 3 is a front view of the nozzle.
[0046]
As shown in FIG. 2, the nozzle 16 has a structure in which a substantially cylindrical core 42 is inserted and screwed into a substantially cylindrical hollow casing 41. The casing 41 is made by machining a metal material such as stainless steel or brass, and has an opening hole 43 at the tip thereof whose center is coincident with the center axis A of the nozzle 16 and whose cross section is circular. The outer contour of the gas injection port 60 (see FIG. 3) is formed. A hole 44 as a gas supply port is formed in the side surface of the casing 41 so as to have an axis perpendicular to the central axis A of the nozzle 16. A female screw groove is formed in the inner peripheral surface of the hole 44 so that the pipe 45 serving as the air supply pipe 61 can be screwed into the hole. A female screw groove 46 is formed at a base end portion on the inner surface of the casing 41, and a step portion 47 having a slightly larger inner diameter is formed at a portion in the base end direction. A male screw groove 48 is formed on the outer surface of the distal end portion of the casing 41 so that a fixing nut 49 for mounting the nozzle 16 can be screwed thereon.
[0047]
The core 42 is formed by machining a metal material which is the same as or different from that of the casing 41 described above, and is hollowed out along the center axis A thereof so as to be hollow. The outer diameter of the casing 41 is such that it fits perfectly into the hollow hole of the casing 41, and the outer diameter near the center in the longitudinal direction is formed to be slightly narrower. An annular cylindrical space 50 is left. The space 50 communicates with the hole 44 provided in the casing 41 described above, and a gas such as compressed air is introduced through the hole 44. A male thread groove 51 is cut in the outer periphery slightly before the base end of the core 42, and is screwed with the female thread groove 46 to fix the core 42 inside the casing 41. Further, the portion on the base end side further than the thread groove 51 has a slightly larger diameter, and the O-ring seal 52 is sandwiched between the step portion 47 and the airtightness of the space 50 described above. are doing. A female thread groove is cut in the inner diameter of the hole 53 at the base end of the core 42, and a pipe 54 at the distal end of the fluid feed pipe 25 is screwed into and connected thereto. At the distal end of the core 42, a hole 55 is formed as a fluid discharge port which communicates with a fluid supply port at the base end through a hollow space inside the hole. The enlarged portion of the substantially conical shape is formed as a spiral forming body 56. A vortex chamber 57 is formed between the distal end surface of the spiral forming body 56 and the inner surface of the distal end of the casing 41. The distal end face 58 of the core 42 that forms the vortex flow chamber 57 has a gap between the core 42 and the opening 43 of the casing 41 described above.
[0048]
Referring to the front view of the nozzle 16 shown in FIG. 3, a hole 55 as a circular fluid discharge port is disposed at the center, and an annular gas injection port 60 is disposed around the hole 55. The gas injection port 60 communicates with a plurality of spirally extending swirling grooves 59 formed on the conical surface of a spiral forming body 56 disposed inside the casing 41.
[0049]
The gas such as compressed air supplied from the hole 44 serving as a gas supply port passes through the space 50 and is compressed when passing through the swirl groove 59 having a small cross-sectional area formed in the spiral forming body 56, and the high-speed airflow is generated. It becomes. The high-speed airflow becomes a swirling airflow inside the swirl chamber 57, is injected from the narrowed annular gas injection port 60, and forms a high-speed vortex of gas in front of the nozzle 16. This vortex is formed in a tapered conical shape such that the forward position close to the tip of the casing 41 is focused.
[0050]
At this time, the fluid material is supplied to the hole 53 as the fluid supply port via the pipe 54. The fluid material discharged from the hole 53 as the fluid discharge port through the hole 53 through the hollow portion of the core 42 is crushed into fine particles by the high-speed vortex of the gas injected from the gas injection port 60, and the vortex of the fluid is discharged. The mixture is forcibly mixed with the rotation, and is discharged in the form of a spray toward the front of the nozzle 16 as a mixture of uniformly mixed fine particles.
[0051]
As shown, even if the inner diameter of the hole 55 is slightly smaller than the inner diameter of the boring hole of the core 42, no clogging of the fluid material occurs, but the inner diameter of the hole 55 is the same as the inner diameter of the boring hole. It may be a diameter.
[0052]
Next, the operation of the present mixing apparatus configured as described above will be described.
[0053]
When the mixing start is instructed by the operator, the control unit 30 opens the solenoid valve 27a, monitors the output of the air pressure sensor 28a, and fills the upper space of the raw material tank 20a with the compressed air from the compressor 69. Wait until the predetermined pressure is reached (in this initial state, the other solenoid valves are closed). When it is confirmed by the air pressure sensor 28a of the raw material tank 20a that the internal pressure of the raw material tank 20a has increased to a predetermined air pressure, the control unit 30 closes the electromagnetic valve 27a and opens the electromagnetic valve 27b to open the inside of the raw material tank 20b. Is increased to a predetermined pressure. The pressure at this time does not always match the pressure of the raw material tank 20a. The fluid material contained in the raw material tank 20a and the fluid material contained in the raw material tank 20b may have different viscosities, or the flow rates to be supplied (that is, discharged from the tank) may be significantly different. That's why. As described above, after the solenoid valves 27a and 27b are sequentially opened to increase the internal pressure of the raw material tanks 20a and 20b to a predetermined pressure, the solenoid valve 67 is further opened to reduce the internal pressure of the compressed air reservoir 64 to a predetermined pressure. If the pressure is increased to, the conditions for starting mixing and charging are established.
[0054]
When the controller 30 determines that the conditions for starting mixing and charging have been satisfied, the controller 30 opens the pressure control valve 63 next. Then, compressed air is supplied to the gas supply port of the nozzle 16 from the compressed air reservoir 64, and a high-speed vortex of air is injected from the gas injection port 60 at the tip of the nozzle 16.
[0055]
Next, the control unit 30 opens the electromagnetic variable throttle valves 24a and 24b to a predetermined opening degree. Then, the fluid materials 21a, 21b stored in the raw material tanks 20a, 20b are supplied from the fluid feed pipes 22a, 22b at a mixing ratio corresponding to the opening degree of each of the electromagnetic variable throttle valves 24a, 24b. The liquid is supplied to the fluid supply port of the nozzle 16 via the feed pipe 25, and is discharged in a mixed state from the fluid discharge port at the tip of the nozzle 16. The fluid materials 21a and 21b discharged to the front of the nozzle 16 are crushed into fine particles by the high-speed vortex of air also formed in front of the nozzle 16, and are completely mixed with each other with the flow of the vortex. As a result, a uniform mixture is discharged into the batch tank 10 through the flexible tube 12.
[0056]
As the mixing of the fluid materials proceeds, the liquid level of the fluid materials 21a and 21b inside the raw material tanks 20a and 20b decreases, and accordingly, the volume of the upper space inside the raw material tanks 20a and 20b increases. And the air pressure in this area decreases. When this pressure change is detected by the air pressure sensors 28a and 28b, the control unit 30 switches the solenoid valves 27a and 27b to the open state for an appropriate time to maintain the air pressure inside the raw material tanks 20a and 20b at a predetermined appropriate value. . Similarly, by controlling the solenoid valve 67, the pressure of the compressed air inside the compressed air reservoir 64 is maintained at a predetermined appropriate value.
[0057]
As described above, the mixture having the mixing ratio as instructed by the operator is charged into the batch tank 10. When the mixture contained in the batch tank 10 is discharged from the nozzle 16 as a spray-like mixture, the mixture is already completely and uniformly dispersed, so that there is usually no need to further stir.
[0058]
After the mixture is charged in the batch tank 10, when the circulation of the mixture (remixing) is instructed by the operator, the control unit 30 closes the electromagnetic variable throttle valves 24a and 24b, opens the electromagnetic valve 63, and further opens the electromagnetic valve 63. Then, the solenoid valve 19 is opened. Then, the mixture in the batch tank 10 is supplied from the discharge port 15 to the nozzle 16 via the re-supply pipe 18 and the fluid feed pipe 25, and is again dispersed uniformly with the flow of the vortex, and the batch tank 10 is dispersed. Will be returned within.
[0059]
When a predetermined reaction or operation in the batch tank 10 is completed, the control unit 30 opens the solenoid valve 17 and discharges the mixture in the batch tank 10 via the harvest port 16.
[0060]
【The invention's effect】
As described above in detail, according to the present invention, a fluid material can be uniformly mixed without providing a stirring blade.
[0061]
Since there is no need to provide a stirring blade, there is no need to consider setting the number of rotations based on viscosity, selecting a stirring blade, and installing a baffle plate. Further, since there is no stirring blade, no vortex (swirl) is generated on the free surface, and no air is mixed into the mixture. Further, since there is no flow unlike a stirring operation by a stirring blade, heat generation during dispersion can be suppressed.
[0062]
Further, the device itself is very simple, and maintenance and cleaning are easy.
[Brief description of the drawings]
FIG. 1 is a diagram showing an overall configuration of a mixing device according to the present invention.
2A and 2B are a plan view and a cross-sectional view illustrating a structure of a nozzle.
FIG. 3 is a front view showing a structure of a nozzle.
[Explanation of symbols]
10 Batch tank
12 Serpentine tube
14 Exhaust vent with filter
16 nozzles
20a, 20b Raw material tank
21a, 21b Fluid material
24a, 24b Electromagnetic variable throttle valve
28a, 28b, 62, 65 Air pressure sensor
63 Pressure control valve
64 compressed air reservoir
69 compressor
17, 19, 27a, 27b, 67, 73 Solenoid valve
30 control unit
41 Casing
42 core
43 Opening hole (gas injection port)
44 holes (gas supply port)
45 Piping (air supply pipe)
53 holes (fluid supply port)
55 holes (fluid discharge port)
56 spiral forming body
57 Whirlpool Chamber
59 Turning groove
70 Jacket for heating and cooling
71 Constant temperature water tank
72 pump

Claims (9)

A container for containing the fluid material;
A fluid discharge port for discharging the fluid material into the container, a fluid supply port communicating with the fluid discharge port, and the fluid flow forming a high-speed vortex of gas in front of the fluid discharge port. A gas outlet formed around the body outlet, and a nozzle having a gas supply port communicating with the gas outlet,
Gas supply means for supplying the gas to the gas supply port of the nozzle,
Fluid circulating means for supplying the fluid material in the container to the fluid supply port of the nozzle,
The fluid material supplied to the fluid supply port of the nozzle is discharged from the fluid discharge port of the nozzle, is crushed by the high-speed vortex of the gas, and is jetted into the container in a uniform mixed state. A mixing device. 2. The mixing apparatus according to claim 1, further comprising a reduction unit provided in front of the nozzle to reduce kinetic energy of the fluid material ejected from the nozzle. The mixing device according to claim 1, wherein the container includes an exhaust unit that discharges the gas discharged into the container by the nozzle to the outside of the container. 4. A fluid supply means for supplying the fluid material to the fluid supply port of the nozzle for charging the fluid material into the container. 3. The mixing device according to claim 1. The mixing apparatus according to claim 4, wherein the fluid supply unit mixes a plurality of fluid materials at a predetermined ratio and supplies the mixture to the fluid supply port of the nozzle. The mixing apparatus according to claim 5, wherein the fluid supply means includes a flow rate adjusting means for adjusting the ratio. The mixing device according to any one of claims 1 to 6, wherein the mixing device is used as a reactor in which a predetermined reaction proceeds in the container. The mixing device according to claim 7, wherein the reactor is a bioreactor. The mixing device according to claim 8, wherein the bioreactor is a bioreactor for culturing aerobic microorganisms, and a gas supplied to the gas supply port of the nozzle is a gas containing oxygen.

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