JP2013056296A - Method of manufacturing mixture of solid and liquid, and mixing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and apparatus of mixing a solid material and a liquid while reducing the contaminating amount of gas as much as possible.SOLUTION: The mixing apparatus 1 for mixing the solid material S and the liquid L includes: a pre-mixing section 2 which forms a first mixture M1 containing the solid S in the form of powder, granules, massive material, etc. and the liquids L, and also containing the gas A mixed therein; a storage container 3 which accommodates the first mixture M1 formed in the pre-mixing section 2 to temporarily stay so that a stay layer of the first mixture M1 is formed and a free liquid level J of the stay layer is exposed to the atmospheric pressure or a pressure less than the atmospheric pressure; and a stirring container 5 which is connected with the storage container 3 at a lower part of the storage container 3 through a connection tube 4, accommodates the first mixture M1 temporarily stayed in the storage container 3, and forms a second mixture of the solid and the liquid by stirring with a stirring blade 50 located immersed in the first mixture.

Description

  The present invention is a technique capable of further reducing the amount of gas mixed in a mixture when the mixture is formed by mixing and stirring solids and liquids having shapes such as powders, granules and lumps. More specifically, after mixing the solid and the liquid, at least a part of the gas mixed therein is removed in advance and subsequently stirred, thereby reducing the amount of mixed gas or more effective. The present invention relates to a method for producing a mixture and a mixing apparatus that can be reduced to a minimum.

  The present invention relates to a situation where it is necessary to produce a mixture with a smaller amount of gas at a high speed and in a large amount, or to dissolve a solid in a liquid at a high speed and in a large amount while further reducing the amount of gas, and a mixture in a liquid This is particularly useful in situations where the concentration of the water needs to be accurate.

  As a technique that can reduce the amount of gas mixed in a mixture of solids and liquids in the form of powder, granules, lumps, etc., solids and liquids are supplied to a common input pipe, An apparatus that performs mixing and stirring by a specially-shaped rotating disk (pin mill) in a connected mixer is known (Patent Document 1). The rotating disk in Patent Document 1 includes a disk-shaped rotating member and a plurality of pins that are erected on one plate surface of the rotating member and mix and agitate the solid and liquid by the rotation of the rotating member. And a protruding portion. Therefore, if the rotating plate is rotated, the protrusions act on the solid matter, the liquid and the mixture with the minimum necessary stirring force, and the air entrainment generated by supplying the liquid by pressure feeding (so-called “bubble chewing”) ) As much as possible.

JP-A-8-168862

  However, simply using the above-mentioned rotating disk cannot sufficiently remove the gas mixed during the pressure feeding because the liquid is supplied by the pressure feeding when the solid and the liquid are mixed and stirred. In addition to the problem of “bubble chewing” that occurs when a gas is mixed into a mixture of a solid and a liquid, when the mixture is transported through a pipe by a pump device, the solid remains as a “dull” due to the mixing of the gas. Therefore, there is a problem that the power and piping resistance necessary for transporting the mixture fluctuate due to the uneven mixing state. Such problems may occur when there are more solids and / or liquids to be mixed, when more solids and liquids are mixed in a shorter time, when pipes are narrow or longer, or when pipes, bends or irregularities In the case where an irregular part to which a part or a measuring device, a valve, a tank or the like is connected is provided, the part becomes more prominent.

  The present invention has been made in view of such circumstances, and when forming a mixture by mixing and stirring solids and liquids in the form of powder, granules, lumps, etc., the gas in the mixture It is an object of the present invention to provide a method and an apparatus that can further reduce the mixing amount.

Hereinafter, the present invention will be described. In the description, meanings or interpretations of terms used are as follows.
(1) “Solid matter” means a solid or solid substance which is required to be dispersed, suspended or mixed in a liquid, and typical examples of its properties are powders, granules or lumps.
(2) “Free liquid level” refers to the surface of a liquid or a mixture of liquid and solid that is exposed to atmospheric pressure or less and is not in contact with the inner wall surface of the container. The position in the direction is called the “liquid level” of the free liquid level.
(3) “Full liquid state” means a state in which a liquid or a mixture of a liquid and a solid is filled to such an extent that a free liquid level is not formed. The liquid is not limited to water. Of the full liquid state, a state in which the liquid or the mixture is flowing may be referred to as a “full flow state”.

  In order to solve the problems of the present invention, a first embodiment of the present invention relates to a method for producing a mixture. In the first embodiment, solids and liquids in the form of powder, granules, agglomerates and the like are used. A first step of forming a first mixture in which gas is mixed, and the first mixture formed in the first step is temporarily retained in a storage container, A second layer that forms a stagnant layer and exposes the free liquid level of the stagnant layer to atmospheric pressure or a pressure lower than that to remove at least a part of the gas mixed in the first mixture during the staying process. And a third step of stirring the first mixture from which at least a part of the gas has been removed in the second step to form a second mixture of the solid and the liquid. It is characterized by having.

  In the second mode of the present invention, in the first mode, the third step is to put the first mixture in a storage container and a stirring container connected via a connecting pipe below the storage container. The second mixture is formed by stirring and stirring with the stirring blade located in the first mixture lowered and accommodated in the stirring container.

  In the third mode of the present invention, in the first mode or the second mode, the second step regulates free flow around the vertical line of the first mixture temporarily staying in the storage container. There is a vortex reduction step of reducing the vortex flow of the first mixture by the resistance means.

  In the fourth mode of the present invention, in the third mode, the eddy current reducing step is a step of reducing the eddy current of the first mixture by a resistance plate installed extending in the vertical direction in the storage container.

  In the fifth aspect of the present invention, in any one of the first to fourth aspects, in addition to the first to third processes, the change in the liquid level of the free liquid level of the first mixture in the storage container is prevented. Or it has a level control process which controls to suppress.

  In the sixth embodiment of the present invention, in any one of the first to fifth embodiments, in addition to the first to third steps, the flow rate of the fluid moving in the pipe to which the second mixture is injected is adjusted. And a charging amount control step for controlling at least one of the amount of solids and the amount of liquid contained in the first mixture, and an injection step for drawing the second mixture from the stirring vessel and injecting it into the pipe. .

  In a seventh aspect of the present invention, in any one of the first to sixth aspects, the liquid is seawater or fresh water, and the solid is a chemical for subjecting the liquid or its contents to chemical treatment.

  According to an eighth aspect of the present invention, in the sixth aspect, the liquid is ballast water stored or stored in a ballast water tank of a ship, and the solid is sterilized for sterilizing microorganisms in the ballast water. It is a chemical | medical agent or its raw material for processing an agent or its raw material, or its disinfectant.

  The ninth aspect of the present invention relates to a mixing apparatus. In the ninth aspect, the apparatus for mixing solids and liquids includes solids and liquids in the form of powders, granules, lumps and the like. And a premixing unit that forms a first mixture in which gas is mixed, and the first mixture formed in the premixing unit is accommodated to form a staying layer of the first mixture, and the staying layer A storage container that is temporarily retained so that the free liquid level is exposed to atmospheric pressure or a pressure lower than the atmospheric pressure, and the storage container is connected to the storage container via a connecting pipe below the storage container. The second mixture of the solid and the liquid is formed by containing the first mixture temporarily retained in the container and stirring with a stirring blade located in the first mixture. And a stirring vessel that performs the above-described operation.

  According to a tenth aspect of the present invention, in the apparatus according to the ninth aspect, the premixing section includes a mixing input pipe, a solid material input means for supplying a solid material into the mixing input pipe, and a tangent to the mixing input pipe. Liquid injection means for supplying liquid in the direction or around the tube axis of the mixing input tube.

  In an eleventh aspect of the present invention, in the ninth or tenth aspect, the storage container includes a resistance plate extending in the vertical direction that reduces the vortex generated in the first mixture.

  In a twelfth aspect of the present invention, in any one of the ninth to eleventh aspects, the first mixture is stored in a full state in the stirring container and the free liquid level of the first mixture in the storage container is increased. A level control mechanism for controlling the liquid level to be kept constant is provided.

  In a thirteenth aspect of the present invention, in the twelfth aspect, the level control mechanism is formed by a level measuring means for measuring the liquid level of the free liquid level of the first mixture in the storage container and a stirring container. A mechanism for controlling the operation of the pump device based on the output of the level measuring means.

  According to a fourteenth aspect of the present invention, in any one of the ninth to thirteenth aspects, the solid material is charged in the premixing unit based on the flow rate of the fluid moving through the piping into which the second mixture is injected. An input amount control mechanism for controlling at least one of the amount and the input amount of the liquid is provided.

  According to a fifteenth aspect of the present invention, in any one of the ninth to eleventh aspects, the liquid is seawater or fresh water, and the solid is a chemical for subjecting seawater or fresh water or its contents to chemical treatment. .

  In a sixteenth aspect of the present invention, in the fourteenth aspect, the liquid is ballast water stored or stored in a ballast water tank of a ship, and the solid is sterilized for sterilizing microorganisms in the ballast water. It is a chemical | medical agent or its raw material for processing an agent or its raw material, or its disinfectant.

  According to the method and apparatus for producing a mixture of the present invention, when a mixture of a solid and a liquid (first mixture) stays temporarily in a storage container to form a staying layer, the free liquid of the staying layer As the surface is exposed to atmospheric pressure or less, at least a portion of the gas present in the mixture is released and removed from the mixture. Therefore, according to the present invention, it is possible to produce a mixture (second mixture) in which the amount of gas mixed is smaller than that of the original mixture (first mixture), in other words, solids and liquids. When the mixture is formed by mixing and stirring, the amount of gas mixed in the mixture can be further reduced.

  The effects produced by the embodiments of the present invention are as follows.

  According to the first aspect of the present invention, when the mixture of the solid and the liquid temporarily stays in the storage container to form the staying layer, the free liquid level of the staying layer is atmospheric pressure or higher. As a result of exposure to less than pressure, at least a portion of the gas entrained in the mixture is released and removed from the first mixture.

  In the first form, the first step is any step as long as it includes a solid and liquid in the form of powder, granules, agglomerates and the like and forms a first mixture mixed with gas. As long as it is such a step, even if it is a step of adding and mixing a solid to a liquid, or a step of adding and mixing a liquid to a solid, Even if it is a step of mixing and mixing solids and liquid separately, it corresponds to the first step, and even if it is a step of actively mixing gas in the process of mixing solids and liquid, Even if the process is inevitably mixed, it corresponds to the first process.

  The solid is agglomerated as long as it becomes a first mixture together with the liquid, as long as the first mixture can form a staying layer in the storage container and a free liquid level can be formed in the staying layer. Or granular. However, when the first mixture or the second mixture is required to have a uniform distribution of the composition, the solid is preferably a powder or a particle having a small particle size.

  Further, when the free liquid level of the first mixture is exposed to a pressure lower than atmospheric pressure, more gas mixed in the first mixture can be removed in a shorter time. However, for that purpose, an auxiliary mechanism such as a pumping device for gas suction and piping for reducing the pressure in the space above the free liquid surface to atmospheric pressure is required. On the other hand, when the free liquid level is exposed to atmospheric pressure, an additional mechanism for gas suction is not required and an increase in cost can be avoided, but it takes more time to remove the gas mixed in the first mixture. . Therefore, in the second step, whether the free liquid level of the first mixture is exposed to atmospheric pressure or lower pressure depends on the required specifications.

  The third step is a step of stirring the first mixture from which at least part of the gas has been removed in the second step, and as a result, what is formed is the second mixture. Since the source of the second mixture is the first mixture from which at least a part of the gas has been removed, the amount of gas mixed is less than that of the first mixture. Therefore, in the third step, the gas mixing amount of the second mixture formed by stirring the first mixture from which at least a part of the gas has been removed in the second step is such that the first mixture Any step may be used as long as the number of steps is less than that of the mixture, and there is no limitation on the stirring method and type.

  In the second embodiment of the present invention, the third step is to connect the first mixture from which at least a part of the gas has been removed in the second step, a storage container, and a connecting pipe below the storage container. Since the first mixture is moved down from the storage container to the stirring container, it is of course easy to move down the first mixture. Is rarely involved or is not involved. In particular, when the first mixture is configured to move in a full state from the storage container toward the stirring container, a new gas is introduced when the first mixture moves from the storage container to the stirring container. I don't get involved. In addition, since the agitation is performed by the agitation blade located in the first mixture in the agitation vessel, gas entrainment due to agitation does not occur or less. Therefore, according to the second aspect of the present invention, it is possible to reliably obtain the second mixture in which the amount of gas mixed is smaller than that of the first mixture.

  In the second step, when the first mixture is temporarily retained in the storage container, at least a part of the mixed gas is exposed by exposing the free liquid level to atmospheric pressure or a pressure lower than atmospheric pressure. On the other hand, when a large fluctuation occurs in the free liquid level, gas is mixed into the first mixture, and the effect of removing the gas tends to be reduced. For example, when a vortex is generated on the free liquid surface or the liquid level is changed, gas is likely to be entrained in the first mixture. The meaning of exposing to atmospheric pressure or a pressure below atmospheric pressure is lost.

  The vortex generated on the free liquid level of the first mixture in the storage container includes at least one resulting from the storage method of the first mixture in the storage container (the former) and from the storage container of the first mixture to the stirring container. (The latter) due to the movement method. A typical example of the former is that when a solid substance is stored in a storage container through a mixing input pipe that extends downward, the solid container is stored in the storage container by introducing a liquid tangentially to the mixing input pipe or around the tube axis of the mixing input pipe. The vortex flow generated on the free liquid level of the first mixture produced, and the typical example of the latter is that when the first mixture moves from the storage container to the stirring container, the action of the movement extends upward and the first mixture A vortex generated on the free liquid surface of the mixture. In some cases, the action of stirring the first mixture contained in the stirring vessel by the stirring blades reaches the free liquid level of the first mixture contained in the storage vessel, causing a vortex in the free liquid level. The action of pulling out the second mixture from the stirring container reaches the free liquid level of the first mixture stored in the storage container, and may cause a vortex in the free liquid level.

  The change in the liquid level that occurs on the free liquid level of the first mixture in the storage container is caused by the action of some force that causes the liquid level to change on the free liquid level (the former), and the storage container (The latter) due to an unbalance between the amount of the first mixture discharged and the amount of the first mixture. A typical example of the former is a vortex generated on the free liquid surface. When an eddy current is generated, a part of the free liquid surface rises or sinks, and the liquid level fluctuates up and down. A typical example of the latter is a decrease in the liquid level that occurs when the input amount of the first mixture in the storage container is so small that the movement amount of the first mixture from the storage container to the stirring container cannot be compensated. In addition, this is an increase in the liquid level that occurs when the amount of the first mixture in the storage container is too large to make up the amount of movement of the first mixture from the storage container to the stirring container. Since the amount of movement of the first mixture from the storage container to the stirring container may be related to the amount of the second mixture drawn from the stirring container, the storage container is affected by the influence of the second mixture being drawn from the stirring container. This can also cause a change in the liquid level of the free liquid level of the first mixture.

  On the other hand, according to the third aspect of the present invention, in the eddy current reducing step, the vortex of the free liquid surface is reduced, so that the entrainment of gas at the free liquid surface can be suppressed, and the second The effect of removing the gas in the process can be maintained. In addition, when the first mixture is temporarily retained in the storage container, a specific example of the technique for reducing the vortex of the free liquid surface is a resistance plate in the storage container in the fourth embodiment of the present invention. Is to provide.

  Further, according to the fifth aspect of the present invention, in the level control step, the liquid level is kept constant so as to prevent or suppress the change in the liquid level of the free liquid level of the first mixture in the storage container. Therefore, mixing of new gas can be avoided as much as possible, and the effect of removing gas in the second step can be maintained.

  In the sixth aspect of the present invention, at least one of the amount of solids and the amount of liquid contained in the first mixture is controlled based on the flow rate of the fluid that moves in the pipe to which the second mixture is injected. At the same time, the second mixture is drawn out of the stirring vessel and injected into the fluid in the pipe. Therefore, according to the sixth aspect of the present invention, the second mixture suitable for the flow rate of the fluid moving in the pipe can be injected into the pipe. Such an effect is obtained when, for example, the liquid is seawater or fresh water, and the solid substance is a chemical for chemical treatment of the liquid or its contents, as in the seventh embodiment. The liquid is seawater and the solid is a sterilizing agent for sterilizing microorganisms in the seawater or a chemical for treating the sterilizing agent, and the fluid is stored in the ballast water tank of the ship. In the case of the ballast water that has been stored or stored, it is effective in order to appropriately exert the medicinal effects exhibited by the solid matter.

  According to the 9th form of this invention, the mixing apparatus which performs the manufacturing method of the mixture which concerns on a 1st form is realizable. In the ninth embodiment, since the storage container and the mixing container are connected via the connecting pipe, it goes without saying that the movement of the first mixture is facilitated as in the second embodiment. When the mixture of 1 moves from the storage container to the agitation container, it is less likely to entrain new gas or it is not entrained, so that the second mixture with less gas mixing than the first mixture is reliably obtained. Can do.

  In the tenth aspect of the present invention, when the solid substance is accommodated in the storage container through the mixing input pipe, the liquid is input into the mixing input pipe in a tangential direction or around the tube axis of the mixing input pipe. The liquid can be mixed gently and no excess gas is involved. Therefore, according to this 10th form, a 1st mixture can be accommodated in a storage container comparatively gently, and the mixing amount of the gas in a 1st mixture can be decreased more.

  According to the eleventh aspect of the present invention, the vortex flow of the first mixture generated in the storage container can be reduced by the resistance plate, so that the entrainment of gas due to the vortex flow can be suppressed, and the first storage container is used. The effect of gas removal by exposing the mixture to atmospheric pressure or pressure below atmospheric pressure can be maintained. In the tenth embodiment, when the solid matter is stored in the storage container through the mixing input pipe, the liquid is supplied into the throwing / mixing input pipe in the tangential direction or around the tube axis of the mixing input pipe, so that a vortex is formed. In such a case, the eleventh aspect is more preferable and more effective.

  According to the 12th form of this invention, the mixing apparatus which performs the manufacturing method of the mixture which concerns on a 5th form is realizable. In this case, in particular, since the first mixture is accommodated in the stirring container in a full state, mixing of a new gas can be suppressed or prevented when the first mixture is stirred in the stirring container. The level control mechanism according to the twelfth aspect of the present invention is the second mixture formed in the stirring vessel based on the output of the level measuring means for measuring the liquid level of the free liquid level of the first mixture in the storage vessel. This can be concretely realized by the thirteenth mode for controlling the operation of the pump device for drawing out the pressure.

  According to the fourteenth to sixteenth aspects of the present invention, it is possible to realize a mixing apparatus that executes the method for producing a mixture according to the sixth to eighth aspects, respectively.

It is explanatory drawing of the manufacturing method of the mixture which concerns on the 1st Embodiment of this invention. It is explanatory drawing of the manufacturing method of the mixture which concerns on the modification of the 1st Embodiment of this invention. It is a schematic block diagram of the mixing apparatus which concerns on the 2nd Embodiment of this invention. 3 shows a mixing input pipe and a liquid input pipe in the apparatus, (a) is a side view, and (b) is a z-z cross-sectional view in (a). These are the schematic block diagrams which show the modification of the mixing apparatus which concerns on the modification of 2nd Embodiment of this invention. FIG. 3 shows a storage container and a resistance plate provided on the inner wall of the apparatus shown in FIG. 3 and FIG. 5. FIG. It is a schematic block diagram of the mixing apparatus which concerns on the 3rd and 4th embodiment of this invention. The posture when the storage container of the mixing apparatus is installed on the ship is shown, (a) shows the case where the rocking of the ship is rolling, and (b) shows the case where the rocking of the ship is pitching. It is a schematic block diagram of the 5th Embodiment of this invention.

  Hereinafter, the manufacturing method and mixing apparatus of the mixture which concern on embodiment of this invention are demonstrated with reference to an accompanying drawing. In addition, the same code | symbol is attached | subjected to the same part in each figure, or an equivalent or common part, and the description is abbreviate | omitted. In addition, this invention is not limited to embodiment described in drawing.

[First Embodiment] Method for Producing Mixture (See Fig. 3 and Fig. 7 Mixing Device)
Drawing 1 is an explanatory view of the manufacturing method of the mixture concerning a 1st embodiment of the present invention. The manufacturing method includes a first step (S1) of forming a first mixture M1 (M1a) in which a gas A is mixed while containing a solid S and a liquid L in the form of powder, granules, agglomerates, and the like. And the first mixture formed in the first step (S1) is temporarily retained in the storage container 3 to form a retained layer of the first mixture M1 (M1a). A second step (S2) in which the free liquid level J is exposed to atmospheric pressure or a pressure lower than that to remove at least a part of the gas A mixed in the first mixture M1 during the staying process; The third mixture (M1 (M1b)) from which at least part of the gas has been removed in the second step is stirred to form a second mixture M2 of the solid and the liquid. Step (S3).

  In the manufacturing method of the present invention, in order to expose the free liquid level J of the first mixture M1 staying in the storage container 3 to the atmospheric pressure, an opening is provided in the upper part 3a of the storage container 3 and opened to the atmosphere. Alternatively, the other end of the vent pipe 30 having one end connected to the upper portion 3a of the storage container 3 may be opened to the atmosphere. Further, in order to expose the free liquid level J of the first mixture M1 staying in the storage container 3 to a pressure lower than atmospheric pressure, the storage container 3 is connected to one end of the exhaust pipe 30 and the pump 31 is connected to the other end. And the inside of the storage container 3 may be depressurized by the pump 31. Thereafter, the operation of the pump 31 is when the free liquid level J of the first mixture M1 needs to be exposed to a pressure below atmospheric pressure, in other words, the gas A is withdrawn more actively or more than just opening to the atmosphere. It's enough to do it when you need it.

  This manufacturing method corresponds to the first embodiment of the present invention, and has the effects as described for the first embodiment. That is, when this manufacturing method is executed, when the first mixture M1 is temporarily retained by forming a retention layer in the storage container 3, the free liquid level J is at atmospheric pressure or a pressure lower than that. As a result of the exposure, at least a part of the gas A mixed in the first mixture M1 is removed from the first mixture M1, and therefore gas is mixed in compared with the original mixture (first mixture M1). A small amount of the mixture (second mixture M2) can be produced, in other words, when the mixture M2 is formed by mixing and stirring the solid S and the liquid L, the gas A in the mixture M2 Reduce the amount of contamination.

  Drawing 2 is an explanatory view of the manufacturing method of the mixture concerning the modification in the 1st embodiment of the present invention.

<First Modification>
In the first modified example, in the manufacturing method according to the first embodiment of the present invention described with reference to FIG. 1, the third step includes a storage container 3 and a connecting pipe below the storage container 3. The first mixture M1 (M1b) is accommodated in the stirring vessel 5 connected via 4 and the stirrer located in the first mixture M1 (M1b) lowered into the stirring vessel 5 Stir with blade 50 to form second mixture M2. This first modification corresponds to the second mode of the present invention, and has the effects as described in the first mode.

<Second Modification>
In the second modification, in the manufacturing method according to the first embodiment of the present invention described with reference to FIG. 1, the second step (S2) is the first that is temporarily retained in the storage container. A eddy current reducing step (S2a) for reducing the eddy current of the first mixture M1 by resistance means for restricting free flow of the mixture M1 around the vertical line (see FIG. 2). This second modification corresponds to the third mode of the present invention, and has the effects as described in the third mode.

<Third Modification>
In the third modification, the eddy current reducing step (S2a) is a step of reducing the eddy current of the first mixture M1 by the resistance plate B installed in the storage container 3 so as to extend in the vertical line direction (FIG. 2). This third modification corresponds to the fourth mode of the present invention, and has the effects as described in the fourth mode.

<Fourth Modification>
In the fourth modification, in addition to the first to third steps (S1 to S3), the level is controlled so as to prevent or suppress the change in the liquid level of the free liquid level of the first mixture M1 in the storage container 3. It has control process S6 (refer FIG. 2). This fourth modified example corresponds to the fifth mode of the present invention, and has the effects as described in the fifth mode.

<Fifth Modification>
In the fifth modification, in addition to the first to third steps (S1 to S3), the first mixture M1 is based on the flow rate of the fluid F moving in the pipe 8 that is the injection destination of the second mixture M2. The amount control step (S4) for controlling at least one of the amount of the solid S and the amount of the liquid L contained therein, and the injection step for drawing the second mixture M2 from the stirring vessel 5 and injecting it into the pipe 8 ( S5) (see FIG. 2). This fifth modification corresponds to the sixth embodiment of the present invention, and has the effects as described in the sixth embodiment.

  In the manufacturing method according to the above-described first embodiment of the present invention and its modifications, the liquid L is seawater or fresh water, and the solid S is a chemical for subjecting the liquid L or its contents to chemical treatment. In the case (seventh embodiment of the present invention), in particular, the liquid L is seawater, the solid S is a sterilizing agent for sterilizing microorganisms in the seawater or a chemical for treating the sterilizing agent, and the fluid F is When the ballast water is stored or stored in the ballast water tank of the ship (eighth embodiment of the present invention), the medicinal effect exhibited by the solid S can be effectively exhibited.

2ND EMBODIMENT Mixing apparatus FIG. 3: is a schematic block diagram of the mixing apparatus 1 which concerns on the 2nd Embodiment of this invention.

  The mixing apparatus 1 of the present embodiment includes a solid S having a shape such as a powder, a granule, and a lump and a liquid L, and premixes to form a first mixture M1 (M1a) mixed with a gas A Part 2 and the first mixture M1 (M1a) formed in the premixing part 2 are accommodated to form a staying layer of the first mixture M1 (M1a), and the free liquid level J of the staying layer Is connected to the storage container 3 via the connecting pipe 4 below the storage container 3 and the storage container 3 so as to be exposed to atmospheric pressure or a pressure lower than the atmospheric pressure. The first mixture M1 (M1b) temporarily retained at 3 is accommodated, and stirred by the stirring blade 50 located in the first mixture M1 so that the solid S and the liquid are mixed. And a stirring vessel 5 for forming a second mixture M2 with L.

  The solid matter S is dropped into the premixing unit 2 from a solid material storage unit 22 provided above the premixing unit 2.

  The pre-mixing unit 2 is disposed between the solid material storage unit 22 and the storage container 3 and includes a mixing input pipe 21. The liquid charging pipe 25 is connected between the solid material container 22 and the storage container 3.

  The solid material storage unit 22 provided above the mixing input tube 21 stores the solid material S, and the solid material S is supplied by the solid material input adjusting means 23 connected to the mixing input tube 21. The mixed charging pipe 21 is charged. The solid material input adjusting means 23 is a means for adjusting the amount of solid material S input to the mixing input tube 21, the non-injection of the solid material S, and the input amount thereof, and is driven by the driving device 24. The solid material input adjusting unit 23 may be a unit having a function of adjusting the frequency and size (for example, particle size) of the solid material S.

  FIG. 4 is a side view (FIG. 4A) and a cross-sectional view (FIG. 4B) of the main part of the premixing unit 2, and the z-z cross section in FIG. It corresponds to b). As shown in FIG. 4, the liquid input pipe 25 is a pipe through which the liquid L flows, and the liquid L is supplied into the mixed input pipe 21 along the inner wall around the tube axis of the mixed input pipe 21 or in a tangential direction. As shown in FIG. 4 (b), it is attached to the mixing input tube 21. As a result, the liquid L flows under a low resistance. The solid substance S introduced by the solid substance input adjusting means 23 and the liquid L introduced through the liquid input pipe 25 are mixed with each other to become the first mixture M1a, and moved downward into the storage container 3 through the mixed input pipe 21. (See FIG. 4 (a)).

  The gas A is usually mixed in the solid S or the liquid L, particularly the former solid S. For this reason, the 1st mixture M1a formed in the prior mixing part 2 becomes what the gas A mixed.

  The storage container 3 is a container that stores the first mixture M1 (M1a) formed in the premixing unit 2 so as to form a staying layer, and the free liquid level J of the staying layer of the first mixture M1a is The first mixture M1a is accommodated so as to be exposed to atmospheric pressure or a pressure lower than that, and is temporarily retained.

  One end of the exhaust pipe 30 is connected to the upper part 3a of the storage container 3 (see FIG. 3). Since the other end of the exhaust pipe 30 is open to the atmosphere or connected to a pump (not shown in FIG. 3), the free liquid level J of the first mixture M1 stored in the storage container 3 is Exposure to atmospheric pressure or less. Therefore, the gas A mixed in the first mixture M1 floats in the first mixture M1 in the process in which the first mixture M1 is temporarily retained in the storage container 3, and from the free liquid level. As the residence time elapses, the amount of gas A mixed becomes the first mixture M1b that is smaller than the initial first mixture M1a.

  The storage container 3 is provided with level measuring means 60 for measuring the liquid level of the free liquid level J of the first mixture M1 accommodated therein. The level measuring means 60 is a means for measuring the position of the liquid level detecting float 61 floating in the first mixture M1 as a typical example, but is not limited to this. The liquid level of the free liquid level J measured by the level measuring means 60 is transmitted to the control device 7 (described later).

  The first mixture M1b moves down into the stirring container 5 through the connecting pipe 4 having one end connected to the bottom 3b of the storage container 3 and the other end connected to the stirring container 5.

  The stirring vessel 5 includes a stirring blade 50 inside. The stirring blade 50 is rotated by the driving force of the driving device 51 transmitted through the drive transmission means 52, and stirs the first mixture M1b in the stirring container 5. A typical example of the stirring blade 50 is a pin mill, but is not limited thereto.

The first mixture M1b descending and moving into the stirring vessel 5 through the connecting pipe 4 is charged toward or near the rotation center of the stirring blade 50, and stirred by the stirring blade 50 to obtain a second mixture M2. It is carried out of the stirring vessel 5 through a delivery pipe 53 attached to the stirring vessel 5 on the outer periphery of the rotating surface of the stirring blade 50.

  The mixing apparatus 1 shown in FIG. 3 is configured such that the mixing input pipe 21, the storage container 3, the connecting pipe 4, and the stirring container 5 are arranged in a substantially vertical direction in order from the top. There is no need to be arranged and configured. For example, the mixing input pipe 21 may be inclined or curved along the non-vertical direction.

  FIG. 5 is a schematic configuration diagram of a mixing apparatus 1 according to a modification of the second embodiment of the present invention. The mixing apparatus 1 shown in FIG. 5 is the same as that shown in FIG. 3 except that the connecting pipe 4 and the delivery pipe 53 are curved pipes. As shown in FIG. 5, the mixing device 1 has a mixing input pipe 21, a storage container 3, a connecting pipe 4, and a stirring container 5 arranged in order from the top as in the case of FIG. It is not necessary to be arranged along.

  How much the gas A escapes from the first mixture M1a in the storage container 3 (that is, how much the amount of the gas A mixed in the first mixture M1b is reduced) is stored in the storage container 3. Depending on the pressure to which one mixture M1a is exposed. Therefore, in order to further reduce the mixing amount of the gas A in the second mixture M2, the pressure may be further reduced.

  Another method for further reducing the mixing amount of the gas A in the second mixture M2 is to stabilize the free liquid level J of the first mixture M1 accommodated in the storage container 3 without disturbing it. If the free liquid level J is disturbed or unstable, the frequency of contact between the first mixture M and the outside air on the free liquid level increases, so the amount of gas A mixed in the first mixture M1 increases. A tendency is generated (the gas A in this case is not necessarily the same as the gas mixed in the solid S or the liquid L).

  The cause of disturbing or destabilizing the free liquid level J of the first mixture M1 accommodated in the storage container 3 is, for example, the solid S and / or the liquid L in the mixing input pipe 21 or one of the inappropriateness. Change (excessive or excessive input) or variation in the input amount, inappropriate delivery of the second mixture M2 to the outside of the stirring vessel 5 (excessive or excessive delivery) or change in the amount carried out, in the storage container 3 In the vortex of the first mixture M1 generated in The eddy current is generated due to either the introduction of the first mixture M1a into the storage container 3 and the delivery of the first mixture M1b to the outside of the storage container 3, or the input or the introduction. However, the behavior of the mixture downstream of the storage container 3 such as stirring by the stirring blade 50 in the stirring container 5 and sending of the second mixture M2 to the outside of the stirring container 5 is the storage container 3 of the first mixture M1b. The vortex flow may be caused by these behaviors because it is directly influenced by carrying out to the outside and indirectly by the introduction of the first mixture M1a into the storage container 3. .

  In order to suppress and stabilize the disturbance of the free liquid level of the first mixture M1, the amount of the solid material S or liquid L to be added to the mixing input tube 21 and the amount of the second mixture M2 to be discharged out of the stirring vessel 5 should be reduced. It is effective to prevent the free flow of the first mixture M1 accommodated in the storage container 3 by providing a resistance plate B or the like on the inner wall surface of the storage container 3 while optimizing. FIG. 6 is an explanatory diagram of the resistance plate B attached to the inner wall of the storage container 3. In FIG. 6, the resistance plate B is formed as a plate that protrudes radially inward at a plurality of positions in the circumferential direction and extends in the vertical direction. If the resistance plate B is attached to the inner wall surface of the storage container 3, the action can prevent or suppress the generation and growth of the vortex flow of the first mixture M1, thereby disturbing the free liquid level J of the first mixture M1. Therefore, it can be made more stable. Therefore, in order to reduce the mixing amount of the gas A in the second mixture M2, it is desirable to attach the resistance plate B to the inner wall of the storage container 3.

  As shown in FIG. 6, the resistance plate B is typically a vertical plate member extending in the vertical direction of the storage container 3, but does not disturb the free liquid level J of the first mixture M <b> 1 in the end, and more Any shape, size, material, attachment method, etc. may be used as long as the effect of stabilizing can be obtained.

[Third Embodiment] Control of Mixture Production Method and Mixing Device Operation During the following, referring to FIG. 7, the mixture production method according to the present invention and the mixing device are operated. The control in will be described. Here, description of the above-described part (item) is omitted by attaching the reference numeral. FIG. 7 shows an example in which the mixing device 1 is connected to the pipe 8 so that the second mixture formed by the mixing device 1 can be injected into the fluid F in the pipe 8 through which the fluid F flows. In the following, the general case of controlling the mixing device without injecting the second mixture into the fluid F, and the control of the mixing device under the condition of injecting the second mixture into the fluid The case of injection control to be performed will be described.

<General case where the second mixture is not injected into the fluid flowing through the pipe>
The mixing device 1 is connected to the control device 7 so as to be controlled, and is connected to a pipe 8 through which the fluid F flows so as to be injected into the fluid of the second mixture.

  In FIG. 7, a pump 26 with an inverter 26 a, a control valve 27, and a flow meter 28 are connected in order from the upstream side to the liquid input pipe 25 that supplies the liquid L to the mixing input pipe 21. The flow meter 28 sends the flow rate detection signal d to the control device 7, and the control device 7 issues flow rate control command signals b and c to the inverter 26a and the control valve 27, respectively, to control the amount of liquid L introduced. The driving device 24 of the solid material input adjusting means 23 for supplying the solid material S has an inverter 24a. The inverter 24a receives the input amount control command signal a from the control device 7, and the input amount is controlled. It has become so. Furthermore, as a preferred embodiment, a pump 31 with an inverter 31 a is connected to the exhaust pipe 30 provided in the upper part of the storage container 3, and the inverter 31 a receives a command signal f from the control device 7. Then, the pump 31 is controlled so that the pressure in the storage container 3 is equal to or lower than the atmospheric pressure, and the pressure is adjusted.

  The level measuring means 60 provided in the upper part of the storage container 3 is connected to the control device 7 so as to transmit the liquid level detection signal e to the control device 7.

  The drive device (motor) 51 for driving the stirring blade 50 in the stirring vessel 5 has an inverter 51a, and receives the stirring command signal g from the control means 7 and adjusts the degree of stirring. .

  Furthermore, a pump 54 with an inverter 54a is connected to the delivery pipe 53 that is connected to the stirring vessel 5 and delivers the second mixture M2, and the inverter 54a receives the delivery command signal h from the control device 7. , And the amount of transmission is controlled.

  Further, the fluid F flows through the pipe 8 to which the delivery pipe 53 is connected and the flow meter 80 is attached, and the flow rate is transmitted to the control device 7 by the flow rate detection signal i from the flow meter 80. Is done.

  As a preferred example, the pipe 8 is provided with the mixing promoting means 11 on the downstream side of the mixing position N where the pipe 8 is joined to the delivery pipe 53.

  In order to achieve at least one of the following (Goal 1.) to (Goal 4.), the control device 7 may optionally at least one of the following (Goal 5.) and (Goal 6.). Control to achieve the items listed in.

  (Target 1.): More specifically, the amount of the mixture M1 is made constant or this is prevented or suppressed so as to prevent or suppress the change in the amount of the first mixture M1 charged into the storage container 3. Make the variation in quantity smaller.

  (Target 2.): More specifically, this mixing ratio is set so as to prevent or suppress a change in the mixing ratio of the solid S and the liquid L in the first mixture M1 charged into the storage container 3. It is made constant or the fluctuation of the mixing ratio becomes smaller.

  (Target 3.): More specifically, the amount of the mixture M2 is made constant or the amount of the second mixture M2 sent out from the delivery pipe 53 is prevented or suppressed. Make the amount of fluctuation less.

  (Target 4.): More specifically, the liquid level of the free liquid level is constant so as to prevent or suppress the change of the liquid level of the free liquid level J of the first mixture M1 in the storage container 3. Or the fluctuation of the liquid level is made smaller.

  (Target 5.): More specifically, this mixing is performed so as to prevent or suppress a change in the homogeneity of the mixing of the solid S and the liquid L in the second mixture M2 delivered from the delivery pipe 53. The homogeneity is constant or the variation of the mixing homogeneity is made smaller.

  (Target 6): The mixing amount of the gas A in the second mixture M2 delivered from the delivery pipe 53 is made smaller.

  In order to achieve the above (Target 1.) to (Target 6.), the control device 7 receives at least the flow rate detection signal d and the liquid level detection signal e, and performs a predetermined calculation based on these signals. The following control (a) to (f) is performed by issuing a control signal.

  (A) The input amount control command signal a is sent to the inverter 24a, the operation of the drive unit 24, and hence the operation of the solid material input adjusting means 23, and therefore the input / non-input of the solid material S and the input amount (in some cases, the input frequency or large Control).

  (A) The flow rate control command signal b is sent to the inverter 26a to control the operation of the pump 26, and consequently the flow rate of the liquid L.

  (C) A flow rate control command signal c is sent to the control valve 27 to control its opening / closing or its extent, and consequently the flow rate of the liquid L.

  (D) The stirring command signal g is sent to the inverter 51a to control the operation of the drive motor 51 and eventually the stirring blade 50, and hence the degree of stirring of the first mixture M1b.

  (E) A delivery command signal h is sent to the inverter 54a to control the operation of the pump 54 and consequently the delivery amount of the second mixture M2.

  (F) When the pump 31 is installed, the command signal f is sent to the inverter 31a, and the pump 31 is inverter-controlled.

  An object mainly controlled by the control device 7 to achieve at least one of the above (Target 1.) and (Target 2.) is a mechanism that controls the input amount of the first mixture M1, and constitutes this. The input amount control mechanism 9 is composed of at least one of a drive device 24 and a pump 26 and a control valve 27, and can also be defined as a mechanism including a flow meter 28.

  The object that is mainly controlled by the control device 7 to achieve the above (Target 3) is a mechanism for controlling the discharge amount of the second mixture M2, and the discharge amount control mechanism 10 constituting this is at least a pump. 54, or it can be defined as a mechanism composed of a pump 54 and a drive motor 51.

  The object that the control device 7 mainly controls to achieve the above (Target 4) is a mechanism that controls the level of the free liquid level of the first mixture M1, and the level control mechanism 6 that constitutes the mechanism is as follows. It is composed of at least the input amount control mechanism 9 and the discharge amount control mechanism 10, and can be defined as a mechanism including the level measuring means 60 in these.

  An object to be mainly controlled by the control device 7 to achieve the above (Target 5) is a drive motor 51 that drives the stirring blade 50. When the method of charging the solid S or the liquid L affects the homogeneity of the second mixture M2, the controller 7 controls the charging amount control mechanism 9 in addition to the drive motor 51. Can do.

  The target that the control device 7 mainly controls to achieve the above (Target 6) is a pump 31 that reduces the pressure in the storage container 3 to atmospheric pressure or less.

  In the mixing device 1 controlled by the control device 7, for example, when it is necessary to mix the solid S and the liquid L at a predetermined ratio, the solid S and the liquid are mixed when the amount of the gas A is large. The mixing ratio with L may vary, and it may be difficult to mix to a predetermined ratio or to mix uniformly. This is a major disadvantage in the preparation of a drug that produces a medicinal effect by setting a predetermined mixing ratio (see the seventh, eighth, fifteenth and sixteenth aspects of the present invention). In this sense, there are cases where at least two of the above (Target 2.), (Target 5.), and (Target 6.) need to be achieved simultaneously. Not limited to this example, when it is necessary to simultaneously achieve at least two of the above (Target 1.) to (Target 6.), the control device 7 is necessary to achieve those purposes. A predetermined calculation is performed to generate a necessary control signal, and control targets such as the input amount control mechanism 9, the level control mechanism 6, and the discharge amount control mechanism 10 are controlled.

<When the second mixture is introduced into the fluid flowing through the pipe>
A typical example corresponding to the case where the second mixture M2 obtained by the execution of the method for producing a mixture according to the present invention or the operation of the mixing apparatus is injected into the fluid F flowing through the pipe 8, is the seawater or fresh water. And the solid S is a chemical for chemical treatment of the fluid F or its contents (see the seventh and fifteenth aspects of the present invention), and in particular, the fluid F is the ballast water of the ship. When the ballast water is stored or stored in a tank, and the solid S is a sterilizing agent for sterilizing microorganisms in the ballast water or a raw material thereof or a chemical for treating the sterilizing agent or a raw material thereof Furthermore, it is a case where the disinfectant is used for decomposing the disinfectant in the ballast water prior to discharging the disinfectant ballast water to the outside of the ship (the eighth and sixteenth aspects of the present invention). Each form Irradiation). The following is a description of the control in this typical example.

  When the second mixture M2 is mixed at the mixing position N with the fluid F flowing through the pipe 8 outside the mixing apparatus 1, a flow meter 80 for measuring the flow rate of the fluid F is provided upstream of the mixing position N, A flow rate detection signal i as a measurement value by the flow meter 80 is sent to the control device 7.

  When the concentration of the second mixture M2 mixed with the fluid F downstream of the mixing position N is measured by a densitometer (not shown), the measured value may be sent to the control device 7.

  In addition, it is preferable to provide the mixing promotion means 11 for promoting the mixing of the second mixture M2 into the fluid F downstream of the mixing position N. A typical example of the mixing promoting means 11 is a Venturi tube, but is not limited thereto. When a concentration meter for measuring the concentration of the second mixture M2 mixed with the fluid F is provided downstream of the mixing position N, it is desirable to install the concentration meter at a position downstream of the installation position of the mixing promoting means 11. .

  In order to prevent or suppress a change in the concentration of the second mixture M2 mixed with the fluid F, more specifically, the control device 7 makes the concentration constant or makes the variation in the concentration smaller. In addition, a predetermined calculation is performed based on at least the measured value of the flow rate detection signal i, and a necessary control signal is generated. , And consequently the amount of the second mixture M2 delivered to the fluid F is controlled. At the same time, when it is necessary to achieve at least one of the above (Target 1.) to (Target 6.), the input amount control mechanism 9, the level control mechanism 6, the drive motor 51, and Control at least one of the pumps 31.

  For example, when the solid S is a chemical for chemical treatment of the liquid F or its contents, the second mixture M2 mixed in the fluid F may generate gas over time. The amount of gas mixed in the mixture M2 of 2 may increase unexpectedly, and the possibility of causing problems downstream of the pipe 8 may increase. Further, when the second mixture M2 mixed in the fluid F generates a hazardous substance (chlorine gas or the like) with time, if the amount of the gas A in the second mixture M2 is large, the dangerous substance becomes the gas A. A situation may occur in which the gas A becomes a carrier and diffuses dangerous substances. In such a case, it is necessary to reduce the mixing amount of the gas A in the first mixture M1 as much as possible from the beginning, so that the change in the concentration of the second mixture M2 mixed with the fluid F is prevented or suppressed. It is necessary to achieve the goal and the above (Goal 6.) at the same time. Even in such a case, the control device 7 performs predetermined calculations necessary to achieve those goals, generates a control signal as necessary, and controls at least the pump 31 and the discharge amount control mechanism 10. To control.

  In the above description, the signals a to i may be transmitted by either a wireless method or a wired method.

[Fourth Embodiment] Drug dissolving apparatus in ship-mounted ballast water treatment apparatus Fluid F is or is stored in a ballast water tank of a ship, and solid matter S is a microorganism in the ballast water. When the mixing device 1 is mounted on the ship in the case where the mixing device 1 is mounted on the ship in the case where the mixing device 1 is mounted on the ship, the mixing device 1 is a ship-mounted type. It can be positioned as a drug dissolving device in a ballast water treatment device.

  Here, in the ship-mounted ballast water treatment device, the piping between the ballast water treatment device and the ballast tank is lengthened, and irregular portions to which a curved portion, a deformed portion, a measuring device, a valve, a tank, or the like is connected ( As the number of portions that are not simple straight pipe portions also increases, the gas mixed in the ballast water (seawater) flowing in the piping is unevenly distributed locally, which causes fluctuations in conveyance resistance and conveyance power. In particular, when a disinfectant or the like is introduced into ballast water, a hazardous substance gas typified by chlorine gas or a chlorine-based substance may be generated therefrom, and the gas mixed in the ballast water becomes a carrier of the dangerous substance. It may happen that it spreads. On the other hand, according to the present invention, the amount of gas mixed in the mixture of the bactericide and the like and seawater can be reduced, so that the occurrence of the above problems can be suppressed as much as possible.

  Moreover, when positioning the mixing apparatus 1 as a chemical | medical agent melt | dissolution apparatus in a ship mounted ballast water treatment apparatus, it is calculated | required that the storage container 3 satisfies a certain design condition. In other words, according to the “Guidelines for Approval of Ballast Water Management System (G8)” decided by the International Maritime Organization (IMO), the pitch angle is 7.5 degrees and the roll angle is 22.5 degrees when the ship swings. In addition, it is required to design the storage container 3 so that the first mixture M1 does not flow out of the storage container 3.

FIG. 8 is an explanatory diagram of design conditions that should be satisfied by the storage container. FIG. 8A shows a case where the swing of the ship is rolling (a swing in the ship width direction), and FIG. It is explanatory drawing about the case of ship length direction swing. This is a case where the depth direction axis of the storage container is coincident with the rolling swing axis or the pitching swing axis. The symbols are as follows.
Hr .... Storage container height Dr ... Storage container width direction width Dp ... Storage container ship length direction width Kr ... Roll angle (Maximum 22.5 degrees)
Jr [0] ... Free liquid level when roll angle is 0 Jr [Kr] ... Free liquid level when roll angle is Kr hr [0] ... When roll angle is 0 Height of the free liquid level from the bottom bottom of the trunk of the storage container, hr [Kr] ... Height of the free liquid level from the bottom bottom of the trunk of the storage container when the roll angle is Kr Kp ··· Pitch Angle (up to 7.5 degrees)
Jp [0] ... Free liquid level when pitch angle is 0 Jp [Kp] ... Free liquid level when pitch angle is Kp hp [0] ... When pitch angle is 0 Height of free liquid level from bottom bottom of trunk of storage container hp [Kp] ... Height of free liquid level from bottom bottom of trunk of storage container when pitch angle is Kp

In order to prevent the first mixture M1 from flowing out of the storage container 3 even when the pitch angle Kp is 7.5 degrees and the roll angle Kr is 22.5 degrees in the swinging of the ship, the storage container should be satisfied. The condition is to satisfy the following two expressions simultaneously.
Hr-hr [0]> 1/2 ・ Dr ・ tan22.5 °
Hp-hp [0]> 1/2 ・ Dp ・ tan7.5 °

When the depth direction axis of the storage container and the rolling oscillating axis or pitching oscillating axis of the ship coincide with each other, the design condition is as described above. When the rolling oscillating shaft or the pitching oscillating shaft does not coincide, the design condition to be satisfied of the storage container is to satisfy the following two expressions simultaneously.
Hr-hr [0]> Dr.tan22.5 °
Hp-hp [0]> Dp tan 7.5 °

  Further, even when the pitch angle Kp is 7.5 degrees and the roll angle Kr is 22.5 degrees in the rocking motion of the ship, the first mixture does not contact the inner wall of the storage container and does not contact the inner surface of the storage container. It is necessary to appropriately determine the position of the mixing input pipe and the height of the free liquid level in the storage container so that it falls. This is to prevent the first mixture from contacting the inner wall of the storage container and undissolved drug from adhering to the inner wall. If the undissolved drug adheres to the inner wall, the adhering undissolved drug aggregates and adheres to cause corrosion of the inner wall, or the amount of drug is insufficient by the amount of adhering and the quantification of the drug concentration is impaired. Arise.

  In addition, the first mixture M1 is charged into the storage container from the state in which the free liquid level of the first mixture M1 is formed in the storage container. It is preferable to control the input amount control mechanism 9 by the control device 7.

Fifth Embodiment Drug Dissolving Device in Polluted Water Area Purification Device In this embodiment shown in FIG. 9, for example, the sterilization for purification is applied to the polluted water area purification device for effectively purifying the water area polluted by phytoplankton The case where this invention apparatus is used as a chemical | medical agent melt | dissolution apparatus which melt | dissolves and supplies a chemical | medical agent is shown.

  FIG. 9 shows a polluted water purification apparatus that pumps water in a water area P such as lakes, moats, and ponds contaminated by phytoplankton, and returns the filtered and sterilized water to the water area P.

  In this embodiment, water in a water area P such as a lake, a moat, and a pond is pumped by a pumping pump 91, and the pumped water 98 is filtered by a filter device 92 using a filter cloth / filtering material. Then, a bactericidal agent (solid S) is added to the filtered water 99 to sterilize the relatively small phytoplankton remaining after filtration. For this purpose, a part of the filtered water 99 (liquid L) and the sterilizing agent (solid S) are mixed by using the mixing device 95 according to the present invention to create the second mixture M2. Thereafter, in the sterilization treatment tank 93, the second mixture M2 is introduced into the remaining portion of the filtered water 99, so that microorganisms such as phytoplankton remaining in the filtered water 99 are sterilized. The treated water 100 subjected to this sterilization treatment is returned to the water area P, and the treated water is diffused throughout the water area P by the agitator 97 provided in the water area P, and the water area P is preferably purified by repeating the above treatment cyclically. To do.

  By using the mixing apparatus according to the present invention as a drug dissolution apparatus for a polluted water purification apparatus, a sterilizing drug and a part of filtered water are mixed to form a mixture, and the mixture is put into the remainder of the filtered water to be sterilized. At this time, the amount of gas mixed in the mixture can be reduced, and the effect that the medicinal effect exhibited by the bactericidal agent can be appropriately exhibited can be obtained.

S1 1st process S2 2nd process S2a Eddy current reduction process S3 3rd process S4 Input amount control process S5 Injection process S6 Level control process S Solid matter L Liquid F Fluid B Resistance plate J Free liquid level
M1 first mixture M1a first mixture before being stored in the storage container M1b first mixture after being stored in the storage container
M2 2nd mixture ai signal 1 mixing apparatus 2 premixing part 3 storage container 3a top part of storage container 3b bottom part of storage container 4 connecting pipe 5 stirring container 6 level control mechanism 7 control device 8 piping 9 input amount control mechanism 10 Ejection amount control mechanism 11 Mixing promotion means 21 Mixing input pipe 22 Solid matter receiving portion 23 Solid matter input adjusting means 24 (Driving amount adjusting means 23) drive device
24a inverter 25 liquid inlet pipe 26 pump 26a inverter 27 control valve 28 flow meter 30 exhaust pipe 31 pump 31a inverter 50 agitating blade 51 drive motor 51a inverter 52 driving force transmission means 53 delivery pipe 54 pump 54a inverter 60 level measuring means 61 Liquid level detection float 80 Flow meter 91 Pumping pump 92 Filtration device 93 Disinfection tank 95 Mixing device 97 Stirrer 98 Pumped water 99 Filtration water 100 Treated water P Water area

Claims (9)

In a method for producing a mixture of a solid and a liquid,
A first step of forming a first mixture containing a solid substance and a liquid in the form of powder, granules, agglomerates, etc. and mixed with a gas;
The first mixture formed in the first step is temporarily retained in a storage container to form a retention layer of the first mixture, and the free liquid level of the retention layer is set to a pressure equal to or lower than atmospheric pressure. And a second step of removing at least a part of the gas mixed in the first mixture during the staying,
And a third step of stirring the first mixture from which at least a part of the gas has been removed in the second step to form a second mixture of the solid and the liquid. A method for producing a mixture.   In the third step, the first mixture is stored in the storage container and the stirring container connected via the connecting pipe below the storage container, and the first mixture is lowered and stored in the stirring container. The method for producing a mixture according to claim 1, wherein the second mixture is formed by stirring with a stirring blade located so as to be immersed therein.   The second step includes a eddy current reduction step of reducing the eddy current of the first mixture by resistance means for restricting free flow around the vertical line of the first mixture temporarily retained in the storage container. The manufacturing method of the mixture of Claim 1 or 2 to have.   The method for producing a mixture according to claim 3, wherein the eddy current reducing step is a step of reducing the eddy current of the first mixture by a resistance plate installed extending in the vertical direction in the storage container.   5. A level control step for controlling so as to prevent or suppress a change in the liquid level of the free liquid level of the first mixture in the storage container in addition to the first to third steps. The manufacturing method of the mixture as described in any one of these.   In addition to the first to third steps, at least one of the amount of solids and the amount of liquid contained in the first mixture is controlled based on the flow rate of the fluid moving in the pipe into which the second mixture is injected. The method for producing a mixture according to any one of claims 1 to 5, further comprising: an input amount control step to perform; and an injection step of drawing the second mixture from the stirring vessel and injecting the second mixture into the pipe. .   The method for producing a mixture according to any one of claims 1 to 6, wherein the liquid is seawater or fresh water, and the solid is a chemical for subjecting the liquid or its contents to chemical treatment.   The liquid is a ballast water stored or stored in a ship's ballast water tank, and the solid is a sterilizing agent for sterilizing microorganisms in the ballast water or a raw material thereof, a chemical for treating the sterilizing agent, or The method for producing a mixture according to claim 6, wherein the mixture is a raw material. In a mixing device that mixes solid and liquid,
A premixing unit that includes solids and liquids in the form of powder, granules, lumps, etc., and forms a first mixture mixed with gas;
The first mixture formed in the premixing unit is accommodated to form a staying layer of the first mixture, and the free liquid level of the staying layer is exposed to atmospheric pressure or a pressure lower than that. A storage container for temporary retention;
The storage container is connected to the storage container via a connecting pipe below the storage container, stores the first mixture temporarily retained in the storage container, and is located in the first mixture. A mixing apparatus comprising: a stirring vessel that forms a second mixture of the solid and the liquid by stirring with a stirring blade.

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