JPH0741150B2 - Mixing equipment - Google Patents

Description

FIELD OF THE INVENTION The present invention relates to a mixing device for producing an emulsion, for example obtained by mixing an oil phase and a liquid phase.

2. Description of the Related Art There are various types of mixing apparatuses and they are used for various purposes. In addition to the existing types, new apparatuses have been proposed and developed one after another. One of them is a device as shown in Japanese Patent Publication No. 58-2062. This device has a disk-shaped strong pressure gate in which a large number of minute holes are bored in the circumferential direction of the peripheral portion of the nozzle body at appropriate intervals, a concave portion is formed on both upper and lower surfaces, and a large diameter hole is formed in the center. It has a structure in which the formed disc-shaped focusing gates are alternately loaded, and it is possible to use something like a two-component curing resin in which the curing agent has a certain degree of diffusibility with respect to the main agent. Although some effect can be obtained when stirring, the performance was insufficient for use as an apparatus for producing an emulsion.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention The reason why the above device is unsuitable for use as a device for producing an emulsion is that when the liquid passes through the micropores of the pressure gate, the shear force is large and the kneading action is strong. It seems that stirring is insufficient because the flow passes through the concave portions on the upper and lower surfaces of the focusing gate in a relatively straight flow.

The first invention is to provide a mixing device for an emulsion which can sufficiently perform not only kneading but also stirring.

Means for Solving the Problems That is, the first invention is a mixing device for producing an emulsion obtained by mixing an oil phase and a liquid phase, in which a cylindrical main body and countless minute holes are formed only on the periphery. Drilled,
A plate-shaped strong pressure gate that is tightly fitted to the main body in a direction orthogonal to the flow direction of the fluid, and one or more eccentric holes are formed only in the biased portions, and the main body is orthogonal to the flow direction of the fluid. Characterized in that it is composed of a plate-shaped focusing gate which is tightly fitted in the direction of rotation and which is alternately loaded with the high pressure gate, and a cavity portion which is formed between both gates and communicates with the minute hole and the eccentric hole. Is.

The focusing gates may be arranged so that the positions of the eccentric holes are aligned with each other and the pressure gates are alternately stacked, but preferably, the focusing gates are randomly stacked so that the positions of the eccentric holes are not aligned.

The cavity can be formed by a ring-shaped spacer interposed between both gates, but is preferably formed by a recess provided on at least one surface of both gates.

Problems to be Solved by the Invention In the first invention, in order to make a large number of minute holes in the high-pressure gate, it is usually made by drilling in a metal base. It takes a lot of time and labor to bring the cost up, and the smaller the hole diameter is, the more the holes are worn out. It is necessary to make small holes in a thick substrate, and therefore the thickness of the high pressure gate becomes thin, the substrate is limited to a material with good machinability such as aluminum, the high pressure gate made of aluminum. Has a drawback that electrolytic corrosion is easily caused by a fluid.

A second aspect of the present invention is to provide a mixing device provided with a strong pressure gate which solves the above problems.

Therefore, the second invention uses a reticulate body for the high pressure gate. That is, the second invention is a mixing device for producing an emulsion obtained by mixing an oil phase and a liquid phase, in which a cylindrical main body, a protective plate and a net-like body in which through holes are formed at appropriate intervals only in the peripheral edge. And a plate-shaped strong pressure gate that is tightly fitted to the main body in a direction orthogonal to the flow direction of the fluid, and one or a plurality of eccentric holes are formed only in the biased portions. In the state of tight fitting in the direction perpendicular to the flow direction of the fluid, the plate-shaped focusing gates alternately loaded with the high pressure gates, and the cavity formed between the gates and communicating with the minute holes and the eccentric holes are formed. It is characterized by becoming.

A wire mesh can be cited as a typical preferable example, but a non-woven cloth may be used, and when it has flexibility, it is loaded on a holding plate and fixed by adhesion or the like.

Example An upper lid 4 having inlets 2 and 3 and a flanged tubular lower lid 5 are vertically attached to a cylindrical main body 1, and inside thereof, as shown in FIG. As shown in FIG. 3, a disk-shaped strong pressure gate 7 in which micro holes 6 are formed,
Focusing gates 11 having recesses 8 formed on both sides and two eccentric holes 9 are randomly stacked so that the positions of the eccentric holes 9 do not coincide with each other. A ring gate 13 having a plurality of through holes 12 is loaded. In the figure, reference numeral 15 is a passage for the refrigerant or heat medium when temperature control is required, and 16 is a discharge port.

Action The fluid injected from the inlet 2 at the required pressure is the ring gate.
It spreads through the through hole 12 in the center of 13 into the cavity 17.
At the same time, the fluid injected from the injection port 3 flows into the cavity 17 and mixes with the fluid. Then, it is pushed into the minute holes 6 of the first strong pressure gate 7 and is subjected to a strong shearing action there. The fluid flowing out from each of the micro holes 6 has almost the same pressure and the same flow velocity, but both the pressure and the flow velocity are higher than the fluid in the cavity 17, and in this state, the concave portion 8 of the focusing gate 11
Collide with the bottom. The fluid that has collided with the bottom surface of the recess decreases the pressure and the flow velocity while repeating the coalescence action, and reaches almost the same level as the fluid in the cavity 17. This fluid is then focused on the gate 11
Through the eccentric hole 9 and into the concave portion 8 on the opposite side.
When the portion closest to the bottom reaches the bottom surface of the recess, the portion farthest from the eccentric hole reaches only the position indicated by the broken line.
Therefore, after the portion closest to the eccentric hole collides with the bottom surface of the concave portion, the fluids moving away from the eccentric hole collide with each other by shifting their phases one after another, where a vortex is generated, and coalescence and shearing action are applied. Then, it is pushed again into the minute holes 6 and a strong shearing force is applied.

In the above-mentioned embodiment, the strong pressure gate having a large number of minute holes formed in its periphery is used, but a wire net may be used.

FIGS. 5 and 6 show an example thereof, which is composed of a cap-shaped holding plate 22 in which through holes 21 are formed at regular intervals in the peripheral edge, and a large wire mesh 23 loaded in the holding plate. ,
Wire meshes are fixed to the holding plate 22 by welding or adhesion at the inner and outer portions of each through hole 21 arranged on the circumference. The reason for sticking is that the fluid passes through the wire net 23 and the through hole 21
This is to prevent the fluid from flowing into the through hole 21 from around.
That is, the through hole is closed so that the inflow is made only from the wire mesh portion having the same size as the through hole. For that purpose, it is more desirable to fix the wire mesh around the through hole 21 to the holding plate by welding or the like.

The high pressure gate shown in FIG. 7 shows an example in which a wire mesh 26 is stretched around an annular holder 25.

Advantageous Effects of Invention The first invention is an apparatus in which a pressure gate and a focusing gate are alternately arranged, and the holes formed in the focusing gate are eccentric holes. This allows the fluid to be combined with the kneading action in the pressure gate. The stirring action is performed by the phase shift of (1), and various emulsions can be easily and continuously produced.

The second invention uses a net-like body for the high-pressure gate in the first invention, which makes the production of the high-pressure gate easier and less costly than the one requiring a step of forming a large number of minute holes in the substrate. To obtain a high-pressure gate with an arbitrary thickness, the material is not limited to aluminum, a material that is resistant to corrosion and other suitable materials can be used, and the number of holes per unit area is increased. Therefore, it is possible to control the flow rate over a wide range by installing a cover with holes of appropriate size and replacing it with a cover with a different number of holes and different sizes of holes. , And compared with the micropores of the first invention,
As a result of the flow passage being formed by the combination of linear bodies, the flow passage becomes uneven and changes, so that a vortex flow is generated, and the fluid has a stronger shearing action.

[Brief description of drawings]

FIG. 1 is a sectional view of a mixing device according to the present invention, FIG. 2A is a plan view of a high pressure gate, and FIG. 2B is a partial sectional side view of the same gate.
FIG. 3A is a plan view of the focusing gate, FIG. 3B is a cross-sectional view taken along the line AA of FIG. 3A, FIG. 4 is a partially enlarged cross-sectional view, and FIG. 5 is a rear view showing another example of a high-pressure gate. FIG. 7 is a vertical sectional view of the same, and FIG. 7 is a plan view showing another example of the high pressure gate. 1 ... Main body, 2,3 ... Injection port, 4 ... Upper lid 5 ... Lower lid, 6 ... Micro hole, 7 ... Pressure gate 8 ... Recess, 9 ... Eccentric hole, 11 ... Focusing gate 13 …… Ring gate, 16 …… Discharge port 21 …… Through hole, 22 …… Holding plate, 23 …… Wire mesh 25 …… Holder, 26 …… Wire mesh

Claims (2)

[Claims] 1. A mixing device for producing an emulsion obtained by mixing an oil phase and a liquid phase, wherein a cylindrical main body and a myriad of minute holes are formed only in the peripheral edge thereof, and the flow of fluid through the main body. A plate-shaped strong pressure gate to be loaded in a direction close to the direction orthogonal to the direction, and one or a plurality of eccentric holes are formed only in a biased position, and the body is tightly fitted in a direction orthogonal to the flow direction of the fluid. In addition, the mixing device is characterized by comprising a plate-shaped focusing gate which is alternately loaded with the high pressure gate, and a cavity portion which is formed between both gates and communicates with the minute hole and the eccentric hole. 2. A mixing device for producing an emulsion obtained by mixing an oil phase and a liquid phase, which comprises a tubular body, a protective plate having perforations formed only at the periphery at appropriate intervals, and a net-like body. Laminated, a plate-shaped strong pressure gate that is loaded in the main body in a state of being tightly fitted in a direction orthogonal to the flow direction of the fluid, and one or a plurality of eccentric holes are formed only in a biased portion.
A plate-shaped focusing gate that is tightly fitted to the main body in a direction orthogonal to the flow direction of the fluid and that is alternately loaded with the high-pressure gate, and a cavity formed between the gates and communicating with the minute holes and the eccentric holes. And a mixing device.