JP2004195403A - Liquid mixing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid mixing apparatus for preparing an emulsion having a high moisture ratio particularly when the liquids apt to be separated, for example, water and oil are mixed with each other to prepare the stable emulsion to be hardly separated. <P>SOLUTION: This liquid mixing apparatus is constituted so that a plurality of liquids are mixed with one another and the liquid mixture is emulsified by using an expansion valve and a pipe-shaped mixer. The expansion valve comprises an expansion pipe and a needle valve and the expansion pipe has such a throttled and expanded curve on the inside that interfacial exfoliation and cavitation are not generated in the liquid mixture flowing through the inside of the expansion pipe. The pipe-shaped mixer is connected successively to the outlet of the expansion valve and has a blade on the inside. The liquid mixture is expanded uniformly and emulsified in the expansion valve and the pipe-shaped mixer. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to mixing of liquids that are easily separated. That is, the present invention relates to a liquid mixing apparatus for producing an emulsion having a particularly high water content when mixing water and oil to obtain a stable emulsion which is difficult to separate.
[0002]
2. Description of the Related Art Conventional liquid mixing devices include the following. In a device for mixing and emulsifying a plurality of liquids by using an expansion valve, the throttle and expansion curve of an expansion valve composed of an expansion pipe and a needle valve are adjusted so that the mixed liquid flowing through the expansion valve does not cause interface separation and cavitation. A liquid mixing device which is formed into a curve and uniformly expands and emulsifies the mixed liquid. A liquid mixing apparatus in which at least one end is fixed after applying an ultrasonic wave to the mixed liquid, the mixed liquid is passed through an elastic tubular mixer capable of being vibrated, and the mixed liquid is uniformly dispersed by vibrating the mixer. A liquid mixing apparatus in which at least one end is fixed after applying an ultrasonic wave to the mixed liquid, the mixed liquid is passed through an elastic tubular mixer capable of being vibrated, and the mixed liquid is uniformly dispersed by vibrating the mixer. (See Patent Document 1).
[0003]
JP-A-10-277375
Hereinafter, a conventional liquid mixing apparatus will be described with reference to FIG. The outlet of the expansion valve 101 is opened to the tank 104. An ultrasonic oscillator 106 is attached to the tank 104 via a diaphragm 105, and a rectifying plate 111 is attached above the ultrasonic oscillator 106. The mixer 107 is supported by the bottom plate of the tank 104 and the current plate 111.
[0005]
In this apparatus, the liquid to be treated gradually spreads uniformly without causing interface separation and cavitation, and is blown into the bottom of the tank 104 in an emulsified state. Then, the problem is that at the time of this blowing, the flow is rapidly expanded due to the capacity of the tank 104, and there is a danger that the liquid to be treated will undergo interface separation and cavitation. This has an adverse effect on emulsification. In addition, although the mixer 107 is provided, in emulsification, only a part of a series of flows of a continuous process is performed alone, and in association with other components, for example, the expansion valve 101. It did not act and produce a synergistic effect.
[0006]
[Problems to be solved by the invention]
The present invention is intended to solve such a problem, and provides a liquid mixing device that can be processed by a pipe-shaped mixer while maintaining the effect of expanding the flow gradually and uniformly by expansion valve expansion. It is an object of the present invention to provide a liquid mixing apparatus which is capable of emulsifying a liquid to be treated with a pipe-shaped mixer, a straightening plate, a treatment tank, and the like, so that the state of emulsification becomes more even and stable as a whole.
[0007]
[Means for Solving the Problems]
In a device for mixing and emulsifying a plurality of liquids using an expansion valve and a pipe-shaped mixer, the device comprises an expansion tube and a needle valve, and a throttle and an expansion curve. An expansion valve formed into a curve that does not rise, and a pipe-shaped mixer that is continuously connected to the outlet of the expansion valve and that has a blade therein, wherein the mixed liquid is uniformly expanded, an emulsion is formed. The first aspect of the present invention is a liquid mixing apparatus characterized in that
[0008]
Further, a liquid mixing apparatus having means for applying ultrasonic vibration to the liquid mixture passing through the expansion valve and the pipe-shaped mixer is provided as means for solving the second problem.
[0009]
Further, a third aspect of the present invention is a liquid mixing apparatus in which the expansion valve is provided with an inlet pipe for a mixed liquid premixed by a mixer for oil and an emulsifier at a base end thereof and an inlet pipe for water separately. Means.
[0010]
Furthermore, a fourth aspect of the present invention is a liquid mixing device in which an expansion pipe constituting the expansion valve is thin and has a property of being easily elastically deformed.
[0011]
In addition, a flow straightening plate continuously connected to the outlet of the pipe-shaped mixer, an upper storage tank provided so as to cover the flow straightening plate, a sub-tank provided downstream of the upper storage tank, A fifth aspect of the present invention is a liquid mixing apparatus having a processing tank that receives a mixed liquid and supports the pipe-shaped mixer so as to surround the same, and has an ultrasonic oscillator mounted on an outer wall of the mixer via a diaphragm.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the expansion valve 1 includes an expansion pipe 2, a needle valve 3, a fine adjustment knob 4, and a fine adjustment knob 4 having the same structure as the venturi tube. A pipe-shaped mixer 9 is connected to the outlet of the expansion pipe 2 of the expansion valve 1, and the inside of the pipe-shaped mixer 9 is a pass-type mixer in which a blade 5 is inserted. At the outlet of the pipe-shaped mixer 9, a flow straightening plate 10 having a large number of holes is provided. An upper reservoir tank 11 is provided so as to cover the current plate 10. A processing tank 6 is provided so as to support and surround the pipe-shaped mixer 9. The processing tank 6 is provided with an ultrasonic oscillator 8 via a diaphragm 7.
[0013]
The ultrasonic oscillator 8 having an output of 1200 W and an oscillation frequency of 33 kHz is suitable. Although only two are shown in the drawings, in order to effectively apply ultrasonic waves, it is effective to superimpose a large number of sources and apply the ultrasonic waves from other directions. In the embodiment, twelve may be provided. The vibration of the vibration plate 7 not only vibrates the one housed inside the processing tank 6 but also is transmitted as solid vibration to the pipe-shaped mixer 9 supported by the processing tank 6. Therefore, the function of the diaphragm can be used more effectively. The action of the vibration will be described later in detail. The details of other components will be described later.
[0014]
The oil tank 12 is connected to the inlet of the emulsifier mixer 16 via a pump 18, and the emulsifier tank 13 is connected via a pump 20. The outlet of the emulsifier mixer 16 is connected to the inlet of the expansion valve 1 via a pump 17. The water tank 14 is connected to the expansion valve 1 via a pump 19. The sub-tank 15 is connected to an outlet of the upper reservoir tank 11 and stores the processing liquid, and the outlet is connected to the processing tank 6 and supplies the processing tank once stored to the processing tank 6. Further, the processing tank 6 is connected to an outlet pipe 21 for supplying the final processed emulsion to a device to be consumed.
[0015]
FIG. 2 is a detailed view of the expansion valve 1. At its base end, an inlet pipe 23 for a mixture of oil and an emulsifier and an inlet pipe 24 for water are open. Further, an expansion tube 2 and a needle valve 3 having the same structure as the venturi tube are provided. This inflation tube 2 has a gentle curve on both the entrance side and the exit side, and a throat 25 narrowed to a minimum cross-sectional area is formed between them. That is, the cross section of the pipe is once narrowed and expanded again. The surface that comes in contact with the liquid is mirror finished. The needle valve 3 is similarly finished. The curves of the expansion tube 2 and the needle valve 3 are different. Therefore, the gap between the needle valve 3 and the expansion pipe 2 can be finely adjusted by taking the needle valve 3 in and out. The insertion / removal is achieved by providing the screw portion 22 at the base of the needle valve 3 and rotating the fine adjustment knob 4. The reason why both are finished in a gentle curve is that the mixed fluid passing through the expansion tube 2 does not cause interfacial separation. What is important in emulsification is to make the particle size uniform. Heterogeneity promotes emulsion separation. Since the generation of bubbles due to cavitation has a bad effect on the emulsion, it is also to prevent the formation of bubbles. Although the liquid to be treated in the expansion valve 1 is in a flowing state, ultrasonic waves are applied in a state where no interfacial separation occurs and no cavitation occurs, thereby promoting the emulsification with a uniform particle diameter. be able to.
[0016]
3, 4, 5 and 6 are detailed views of the pipe mixer 9. FIG. 3 shows one in which the blades 5 are constituted by one sheet. FIG. 4 shows one in which the blades 5 are composed of a plurality of blades 5 arranged in a line in the direction of flow. FIG. 5 shows an example in which the blades 5 are composed of a plurality of blades arranged in a plurality of rows along the flow direction. FIG. 6 shows an example in which the blades 5 are composed of a large number of rods implanted in a tube wall. Regarding the shape of the blade, the generation of air bubbles due to cavitation has an adverse effect on the emulsion, so it is sufficient to select a shape that does not cause a sudden change in flow, and appropriately select from well-known technologies other than those described above. Is also possible.
[0017]
The pipe mixer 9 is fixed to upper and lower plate members of the processing tank 6, and ultrasonic vibration of the vibration plate 7 is transmitted to the pipe mixer 9 as solid vibration via the plate member. The pipe-shaped mixer 9 has a small thickness and is easily elastically deformed, and can efficiently transmit the transmitted ultrasonic vibration to the liquid to be processed passing through the inside in a flowing state. is there.
[0018]
The current plate 10 is formed with a large number of holes, and stabilizes the flow of the liquid to be treated from the pipe-shaped mixer 9 in a static flow state, and at the same time, makes the liquid to be treated more uniform. The upper ground storage tank 11 stabilizes the flow behind the current plate 10. The capacity of the sub-tank 15 is about 100 l.
[0019]
The operation of the liquid mixing apparatus of the present invention will be described in the order of processing. The liquid to be treated is mixed with oil 1 in a volume ratio of water 1 to 1.5 and emulsifier 0.003. The oil is generally a fuel oil such as heavy oil, light oil or gasoline, but may be any other oil, such as salad oil, which needs to be emulsified.
[0020]
After the oil and the emulsifier supplied from the oil tank 12 and the emulsifier tank 13 are pre-mixed by the oil / emulsifier mixer 16, the oil and the emulsifier are supplied from the inlet pipe 23 for the mixture to the base end of the expansion valve 1, Water from the tank 14 is also supplied to the base end of the expansion valve 1 from a water inlet pipe 24. The liquid to be treated consisting of oil, emulsifier, and water flows smoothly through the expansion tube 2. After passing through the throat 25 narrowed to the minimum cross-sectional area while being squeezed, it passes the expansion tube 2 while gradually expanding. The liquid to be treated is effectively emulsified by receiving ultrasonic waves while gradually expanding. Since the expansion tube 2 and the needle valve 3 are finished in a gentle curve, no interfacial separation occurs during this time, and no bubbles are generated due to cavitation. The liquid to be treated is blown into the pipe mixer 9 as it is immediately after passing through the expansion pipe 2, and is processed by the pipe mixer 9 while maintaining the effect of the expansion. The liquid to be treated is repeatedly cut by the blades 5 while passing through the pipe-shaped mixer 9 so that the liquid is uniformly emulsified. Further, since the pipe-shaped mixer 9 also performs ultrasonic vibration and is easily elastically deformed, the transmitted ultrasonic vibration is efficiently transmitted to the liquid to be processed passing through the inside in a flowing state, and the uniformity is obtained. The emulsification effect becomes more synergistic. Further, since the liquid to be treated is subjected to ultrasonic vibration in a flowing state instead of a stationary state while passing through the expansion valve 1 and the pipe-shaped mixer 9, emulsification is more effectively promoted.
[0021]
The liquid to be treated passes through the flow straightening plate 10 immediately after passing through the pipe-shaped mixer 9, thereby being brought into a static flow state, and is brought into a stable state without generating turbulent flow. Further, the liquid to be treated is supplied to the treatment tank 6 after passing through the sub-tank 15, so that ultrasonic waves from other directions are applied for a relatively long period of time, so that the state of emulsification is entirely reduced. As a result, it becomes even more stable.
[0022]
【The invention's effect】
As described above, according to the present invention, the following effects can be obtained. According to the first aspect of the present invention, since the treatment liquid flows smoothly through the expansion tube 2 and passes through the throat 25 narrowed to the minimum cross-sectional area while being throttled, it gradually passes through the expansion tube 2 while expanding. Emulsification is effectively performed by receiving ultrasonic waves while the liquid to be treated is gradually expanding. Since the expansion tube 2 and the needle valve 3 are finished in a gentle curve, no interfacial separation occurs during this time, and no bubbles are generated due to cavitation. Further, as soon as the liquid to be treated passes through the expansion pipe 2, it is blown into the pipe-shaped mixer 9 as it is, and is processed by the pipe-shaped mixer 9 while maintaining the effect of the expansion. Furthermore, the liquid to be treated is repeatedly cut by the blades 5 while passing through the pipe-shaped mixer 9, whereby the emulsification is performed uniformly. In addition, since the liquid to be treated is subjected to ultrasonic vibration in a flowing state instead of a stationary state while passing through the expansion valve 1 and the pipe-shaped mixer 9, the effect of uniform emulsification is further synergistic. .
[0023]
According to the second aspect of the present invention, since a means for applying ultrasonic vibration is further provided, the mixing action can be more effectively achieved in addition to the first aspect of the present invention.
[0024]
According to the third aspect of the present invention, an inlet pipe for a mixed solution premixed by a mixer for oil and an emulsifier and an inlet pipe for water are separately provided. In addition, a part of the mixer required in advance can be omitted, and the apparatus can be simplified and made more efficient.
[0025]
According to the fourth aspect of the present invention, since the liquid to be processed passes through the ultrasonic vibration transmitted to the expansion tube in a flowing state because it has a small thickness and is easily elastically deformed. There is an effect that can be transmitted efficiently. ,
[0026]
According to the fifth aspect of the present invention, in addition to the first aspect, the liquid to be treated passes through the straightening plate 10 immediately after passing through the pipe-shaped mixer 9, thereby being brought into a static flow state, and a turbulent flow. The state becomes stable without generation of an emulsion, and furthermore, after passing through the sub-tank 15, it is supplied to the processing tank 6, so that ultrasonic waves from other directions are applied for a relatively long time, so that the emulsion The state of formation becomes more even and stable as a whole.
By utilizing the inventions of claims 1 to 5, a large amount of stable emulsion fuel which does not separate for a long time can be produced. The use of diesel engine fuel can not only improve fuel efficiency, but also significantly reduce CO and NOX concentrations in exhaust gas. The combustion efficiency used as boiler fuel increases.
[0028]
It is effective not only in the production of the above-mentioned emulsion fuel, but also in the emulsification of salad oil and the like, the production of emulsion liquid lotion, the production of medicines and emulsion foods.
[Brief description of the drawings]
FIG. 1 is an overall conceptual diagram of a liquid mixing apparatus according to the present invention.
FIG. 2 is a detailed view of an expansion valve according to the present invention.
FIG. 3 is a detailed view of a pipe mixer according to the present invention.
FIG. 4 is a detailed view of another pipe-shaped mixer according to the present invention.
5 is a detailed view of another pipe-shaped mixer according to the present invention. FIG. 6 is a detailed view of a further pipe-shaped mixer according to the present invention.
FIG. 7 is a diagram of a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Expansion valve 2 Expansion pipe 3 Needle valve 4 Fine adjustment knob 5 Blade 6 Processing tank 7 Vibration plate 8 Ultrasonic oscillator 9 Pipe mixer 10 Rectifier plate 11 Upper storage tank 12 Oil tank 13 Emulsifier tank 14 Water tank 15 Sub tank 16 Oil , Emulsifier mixers 17, 18, 19, 20 pump 21 outlet pipe 22 thread 23 inlet pipe 24 for mixed liquid of oil and emulsifier inlet pipe 25 for water throat 101 expansion valve 102 expansion pipe 103 needle valve 104 tank 105 Vibration plate 106 Ultrasonic oscillator 107 Mixer (starching mixer)
108 Pump 109 Mixer (oil, emulsifier, water)
110 mixer (oil, emulsifier)
111 Rectifier plate

Claims (5)

In a device for mixing and emulsifying a plurality of liquids using an expansion valve and a pipe-shaped mixer, the device comprises an expansion tube and a needle valve, and restricts and expands a curve. An expansion valve formed into a curve that does not cause a rise, and a pipe-shaped mixer that is continuously connected to the outlet of the expansion valve and has a blade provided therein, wherein the mixed liquid is uniformly expanded, an emulsion is provided. A liquid mixing device characterized in that: 2. The liquid mixing apparatus according to claim 1, further comprising means for applying ultrasonic vibration to the liquid mixture passing through the expansion valve and the pipe-shaped mixer. 2. The liquid mixing apparatus according to claim 1, wherein the expansion valve is provided with an inlet pipe for a mixed liquid premixed by a mixer for oil and an emulsifier, and an inlet pipe for water at its base end. 3. The liquid mixing device according to claim 2, wherein the expansion pipe constituting the expansion valve has a small thickness and is easily elastically deformed. A flow straightening plate connected continuously to the outlet of the pipe-shaped mixer, an upper storage tank provided so as to cover the flow straightening plate, a sub-tank provided downstream of the upper storage tank, and receiving a mixed liquid from the sub-tank. 2. The liquid mixing apparatus according to claim 1, further comprising a processing tank supporting the pipe-shaped mixer so as to surround the mixer, and having an ultrasonic oscillator mounted on an outer wall of the mixer via a diaphragm.

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