JPH02261525A - Emulsifying device - Google Patents

Abstract

PURPOSE:To precisely and easily emulsify by providing a disk type liner member in the flow passage of mixed liquid, passing the mixed liquid in the slit type guide groove formed on the plate surface of the liner member and making collision while the flow direction is changed. CONSTITUTION:Flow passages 5, 6, 9, 10 are closed by two sheets of liner members 15, 16 consisting of a hard plate material. In the member 15 disposed to the influent side, two through-holes 15b, 15c through which each mixing liquid ejected from nozzles 2, 3 is allowed to pass are formed in the positions symmetrical to the center of plate surface, and a groove part 15a is formed in one side of the plate surface so as to communicate the end parts of the through-holes. In the member 16 disposed to the effluent side of the member 15 with tight contact therewith, a groove part 16a is formed in the confronting surface in tight contact with the member 15 so as to orthogonally cross the groove part 15a, and two through-holes 16b, 16c for discharge are formed at both outer ends of the groove part 16a, so that the emulsification is carried out while mixing liquid is passed through the members 15, 16. As a result, the precise and easy emulsification is carried out.

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention is an emulsification process in which multiple liquids having different liquid phases are pre-emulsified or mixed in advance and then jetted and collided at the same location from multiple nozzles to emulsify the liquid. It is related to the device.

[Prior art] Conventionally, emulsification devices include ball mill/sand glider-1 high-speed strong shear dispersion machine, colloid mill, ultrasonic dispersion machine,
Homogenizers and the like have been used, but it is impossible to obtain M fine particle emulsions or emulsified products with few aggregated particles.

For this reason, Japanese Patent Laid-Open No. 56-58530 discloses a method of emulsifying a mixture of two liquids by spraying them at the same location from a plurality of nozzles, and Japanese Patent Laid-Open No. 59-49832 describes
A small diameter tubular section with a closed end is inserted into a large diameter tube, an annular space is formed between the outer wall of the small diameter tubular section and an inner wall of the large diameter tube, and a plurality of holes perpendicular to the axis of the small diameter tubular section are formed. A method and apparatus for producing a dispersion liquid are proposed, in which capillary holes are provided so as to face each other, and a liquid mixture supplied from the annular space is injected from the capillary holes and collided with each other within a small diameter tubular part. There is.

In addition, there is a device described in Japanese Patent Application Laid-Open No. 1444/1983 as a device that can adjust the injection pressure etc. in order to correspond to various liquid phases. The liquids passing through the supply flow path gap C formed by the valve a and the valve collide head-on as a jet to achieve an emulsifying effect, and the valve rod d moves due to the balance of forces between the hydraulic chamber e and the spring f. , the gap C is adjusted to adjust the injection pressure and the like.

[Problems to be Solved by the Invention] However, the method disclosed in JP-A No. 56-58530 does not provide specific means, and the injection pressure of the nozzle is adjusted to correspond to the viscosity of various liquid phases. cannot be easily changed.

On the other hand, in the device disclosed in JP-A-59-49832, when trying to adjust the injection pressure by changing the diameter of the capillary hole as a nozzle, a device is prepared for each diameter of the capillary hole, and the device is The device itself would have to be replaced, which would be costly and time consuming.

The device described in JP-A-62-1444 is
Not only is the device itself large because the valve seat a and the valve seat are block-shaped, but the valve seat a is also bulky, which may cause injection collisions? # It is necessary to form the valve seat a etc. with a wear-resistant material against impact, and the wear-resistant materials that can be selected from cost and processability are not only limited, but also the above adjustment. There is also the problem that the structure is insufficient to accurately finely adjust the gap C.

The present invention has been made in view of the above-mentioned problems, and its purpose is to mix two or more liquids with different liquid phases to be emulsified when producing ultrafine emulsions or emulsified products with few aggregated particles. To provide a relatively inexpensive emulsifying device that can reliably and easily emulsify a liquid according to its viscosity, particle size, etc.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention jets a mixed liquid to be emulsified from a nozzle, and while changing the direction of the flow path in a strong IJ manner, onto a predetermined flat part. Alternatively, in an emulsifying device that emulsifies the liquid mixture by colliding with each other, the flow path is closed by two liner members made of a hard plate material, and the first liner member disposed on the inflow side includes: Two first through holes through which each liquid mixture ejected from the nozzle can pass are formed at symmetrical positions with respect to the center of the plate surface, and the ends of the through holes are communicated with one of the plate surfaces. A second liner member disposed on the outflow side in close contact with the first liner member has a groove formed therein, and a second liner member disposed on the outflow side in close contact with the first liner member has the first groove and the second liner member formed on the surface facing the first liner member. A perpendicular second groove is formed, and two second through holes for discharge are formed at both outer ends of the second groove, so that the liquid mixture passes through the stiff liner member. It is characterized in that the emulsification is carried out at the same time.

[Function] In the 'JL converting device configured as described above, when the mixed liquid is supplied to the through hole of the first liner member, this mixed liquid is accelerated when passing through the first groove part, Then, they are sprayed so as to collide with each other in the center of the first liner, and are emulsified.

The emulsified liquid mixture is guided to the outside of the liner plate through the second groove and is discharged through the second through hole.

By using a first liner in which the dimensions of the first groove are appropriately selected, emulsification can be performed reliably and easily in accordance with the viscosity, particle size, etc. of the first liner.

[Example] The present invention will be described in detail below based on an example shown in one figure.

FIG. 1 shows a longitudinal cross-sectional view of a device according to an embodiment of the present invention, and reference numeral 1 in the figure is a cylindrical outer cylinder, and screws 1a and 10 are carved on the outer periphery of both ends of the outer cylinder. .

2.3 is a supply nozzle member that injects the liquid to be mixed at a predetermined high pressure, and its protruding base end 2a.

A female thread is formed on the inner periphery of 3a, into which the tip of a liquid supply pipe (not shown) is screwed, and a receiver inserted inside one end of the outer cylinder 1 is inserted in the radial direction of the outer cylinder 1 as required through the block 4. are fixed at intervals of

4 is a block that receives the supply nozzle member 2.3, and is made of a solid cylindrical body with an outer diameter equal to the inner diameter of the outer cylinder 1;
Two holes 4a and 4b are opened at one end at a predetermined interval in the radial direction to receive the tip of the supply nozzle member 2゜3, and the holes 4a and 4b have a required depth in the axial direction. It's just extended. Reference numeral 5.6 denotes a through hole bored at the bottom of the block 4, which communicates with the tip opening of the supply nozzle member 2.3. Grooves 5a toward the center of the block 4 from the holes 5 and 6,
6a is formed.

Reference numeral 7 denotes a fixing member having a threaded portion 7a that is threadedly engaged with the threaded portion 1a formed on the outer periphery of the outer cylinder 1, and the supply nozzle member 2,
3 is fixed to one end side of the outer cylinder 1.

Is 8 outside? This is a mixing chamber forming block consisting of a bottomed cylindrical body with an outer diameter equal to the inner diameter of the outer cylinder 41, and the above-mentioned receiver is inserted from the other end side of the outer cylinder l so that its bottom 8a abuts against the bottom of the block 4. . At the bottom of the mixing chamber forming block 8, the receivers have through holes 9 that communicate with the blocks 5a and 6a of the block 4, respectively.
, 10 penetrate into the mixing chamber forming block 8.

Reference numerals 11 and 12 designate a pair of presser blocks that are inserted into the mixing chamber forming block 8 and press and fix two liner members, which will be described later.In the center thereof, there is a discharge passage 13 for discharging the emulsified liquid. It is formed to penetrate along the axial direction, and both 11
．． The 12 joining bars are engaged in a bowl-like manner and are metal-sealed. A screw 12 that hinges a discharge pipe (not shown) is attached to the protruding outer end of the presser block 12 located on the other end side of the outer cylinder 1.
a is formed.

Reference numeral 14 in the drawing denotes a fixing member for fixing the presser blocks 11 and 12, which has an opening in the center through which the outer end of the presser block 12 is inserted, and a screw provided on the inner peripheral surface of the other end of the presser block 12. A screw 14a is formed to be screwed into 1b.

Note that 14b is a screw hole into which a key screw is screwed.

1 between the mixing chamber forming block 8 and the presser block 12
From the left side of the figure, a front liner 15 as a first liner member and a back liner 16 as a second liner member are stored in close contact with each other in order. Through-holes and grooves are formed with a width that allows the mixed liquid to pass through, and these allow the inflow path 18
, a guide path 19, an emulsification mixing chamber 20, and an outflow path 21 are formed (see FIG. 6).

Each liner 15, 16 will be explained with reference to FIGS. 2 to 5. Each liner 15, 16 is formed of a highly wear-resistant material such as sintered diamond or artificial sapphire,
The front liner 15 has a disk shape with the same diameter.
As shown in FIG. 3, inflow holes 15c and 15d of the same diameter are formed in vertically symmetrical positions with respect to the center of the plate surface, and
The inflow hole 15c is in close contact with the back liner 16.
, f5d are formed to communicate with each other. The other ends of the inflow holes 15c and 15d that are not communicated by the first guide groove 15a are the through holes 9.
10 respectively. In addition, the inflow hole 15c,
The diameters of the first guide groove 15d and the first guide groove 15a are appropriately determined depending on the characteristics such as the viscosity of the liquid to be emulsified.

As shown in FIG. 4.5, the back liner 16 has a second guide groove 16a orthogonal to the first guide groove of the front liner formed on the surface that closely faces the front liner 15.
Outflow holes 16b and 16c of the same diameter are provided at both ends of this second guide groove.
is formed through it. The tips of the outflow holes 16b and 16c communicate with the discharge passage 13 of the presser block 11.12 described above.

When the front liner 15 and the back liner 16 are overlapped, the first guide groove 15a and the second guide groove 16a intersect at right angles to form an emulsification mixing chamber 20 at the center of both liners.

Further, the inflow holes 15b and 15c form an inflow path 18, the first guide groove 15a forms a guide path 19 toward the center, and the second guide groove 16a and the outflow holes 16b and 16c form an outflow path 21, respectively. Therefore, as shown in FIG.
8, the guide path 19, the emulsification mixing chamber 20, and the outflow path 21 form a liquid path through which fluid flows in this order.

Note that reference symbols 15d and 16d in the figure are positioning holes provided in the respective liner members 15 and 16.

Incidentally, these liners 15 and 16 have a liner thickness of 1.8 mm, an inflow hole diameter of 2III11, a first guide groove width of 0.23 m+++, a length of 1.8 mm, and a depth of 1.8 mm. 0.2m, diameter of outflow hole 2III1
1. The width of the second guide groove may be 0.23mm, the length may be 1°8mm, and the depth may be 0.23mm. Department)
1,400 kg is required to obtain a sample of oil-in-water emulsion with an average particle size of approximately 230 nm using this device.
/cm" pressurized treatment, the flow rate is 60 liters per hour.

Each of these liners can be easily formed by electrical discharge machining.

The operation of this device will be described in detail with reference to FIG.

The mixed liquid supplied from the supply nozzles 2 and 3 collides with the end face of the emulsification mixing chamber forming block 8 through the through hole 5.6 provided in the block 4, and flows through the grooves 5a and 6a and through holes 9 and 10. While the flow direction is changed at right angles, the liquid further collides with the plate surface of the front liner 15 and is pre-emulsified.

This pre-emulsified mixed liquid flows into the inflow holes 15b and 15c of the front liner 15 while increasing the flow velocity, and enters an inflow path 18 formed by the inflow holes 15b and 15c and both ends of the first guide groove 15a. , and the opposing guide path 19 formed by the plate surface of the back liner 16 and the first guide groove 158
．． 19 and are injected into each other.

In the emulsification mixing chamber 20 formed by the center portions of both the first guide groove 15a and the second guide groove 16a,
The two injection liquids rapidly collide with each other, resulting in emulsification of ultrafine particles and emulsification with few aggregated particles.

The emulsified liquid is smoothly discharged into the outflow path 21 formed by the second guide groove 16a, the plate surface of the front liner 15, and the outflow holes 16b and 16C. 13, and the emulsification effect by this device is completed.

In order to perform emulsification to suit the viscosity of various liquid phases, it is necessary to adjust the injection amount of the guide path 19 described above.
Prepare in advance and select it appropriately to install Front Liner 1.
This can be done accurately and easily by replacing only 5.

Since each liner to which high pressure is applied has a simple disk shape, a variety of inexpensive and easily workable wear-resistant materials such as ceramics can be widely used.

In addition, in the present invention, it is necessary to provide at least two liners as in the above-mentioned embodiment for guiding, colliding, and discharging. You may also do this.

[Effects] As described above, according to the present invention, a disc-shaped liner member is disposed in the flow path of the mixed liquid, and the mixed liquid passes through the slit-shaped guide groove formed on the plate surface of the liner member. This allows the flow to collide while changing the direction of the flow.
Emulsification can be carried out accurately and easily by simply replacing the liner member with a liner member having a width and length of the through hole or guide groove depending on the viscosity of the various liquid phases.

In addition, since the liner member can be made of a wear-resistant material that is inexpensive and has good workability, the device itself can be manufactured at a relatively low cost, and it also has good resistance to cavitation caused by high-speed flow of liquid. am, a safe and high quality emulsified substance can be obtained by preventing the contamination of particles.

Furthermore, the liner members used are constructed as a set of two pieces, and these two liner members only have through-holes and guide grooves formed at positions that are 90 degrees out of phase. Depending on the case, it is also possible to use liner members that have the same thickness, a through hole of the same diameter, and a guide groove of the same width and length as both liner members. This has the advantage that it is very easy to use.

Further, since the liner thickness of the liner member can be selected such that the through holes and guide grooves can be easily formed, such processing can be performed easily.

[Brief explanation of drawings]

FIG. 1 is a vertical sectional view of a device according to an embodiment of the present invention, and FIG.
5 are a front view and a cross-sectional view of each liner member used in this device, FIG. 6 is a schematic cross-sectional view of the liners in an overlapping state, and FIG. 7 is a cross-sectional view of a conventional emulsifying device. 1... Outer cylinder 2.3... Supply nozzle 4... Receptacles are blocks 5.6, 9.10... Through holes 5a, 6a... Groove 8... Emulsification mixing chamber forming block 11.12... Presser block 15... Front liner 15a... First guide grooves 15b, 15c... Inflow hole 16... Back liner 16a... Second guide groove 16b, 16c... Outflow hole 18... Inflow path 19... Guide path 21...Outflow channel 20...Emulsification mixing chamber

Claims (1)

[Claims] (1) In an emulsifying device that emulsifies the mixed liquid to be emulsified by jetting it from a nozzle and forcibly changing the direction of the flow path on a predetermined flat surface or by colliding the mixed liquid with each other. The passage is blocked by two liner members made of hard plate material, and the first liner member disposed on the inflow side receives each mixture ejected from the nozzle at a symmetrical position with respect to the center of the plate surface. Two first through holes through which the liquid can pass are formed, and a groove is formed on one plate surface to communicate the ends of the through holes, and the liquid flows in close contact with the first liner member. The second liner member disposed on the side has a second groove perpendicular to the first groove formed on the surface closely facing the first liner member, and both sides of the second groove are formed. An emulsification device characterized in that two second through holes for discharge are formed through the outer end, and the emulsification is performed while the liquid mixture passes through these liner members.