JP3151706B2 - Jet collision device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jet impingement apparatus for homogenizing a fluid, such as emulsification or dispersion of fine particles, and / or atomizing the fluid by pulverization by utilizing collision of fluids. It is.

[0002]

2. Description of the Related Art Conventionally, various devices have been proposed as devices for atomizing or homogenizing a fluid by utilizing the collision between fluids.
An emulsifying device described in JP-A No. 64 is cited.

[0003] This emulsifying apparatus has a configuration in which two kinds of fluids pressurized by a high-pressure pump are jetted in opposite directions to collide with each other and emulsify and disperse. The two plate-like members having the small-diameter nozzles are arranged perpendicularly to the flow path and facing each other to form a space for the emulsifying section therebetween.

In this device, the diameter of the nozzle hole in the emulsifying section is made smaller than the diameter of the introduction passage of the high-pressure fluid, and the collision passage is formed linearly from the introduction passages on both sides including the nozzle hole. Further, by reducing the length of a portion for changing the pressure to the flow rate, the pressure loss is reduced to achieve efficient emulsification and dispersion.

[0005]

However, in the above-mentioned conventional apparatus, even if the processing accuracy and the assembly accuracy of each part of the apparatus, especially the nozzle, and the assembly accuracy are kept extremely high, the front surface is spread due to the spread of the fluid at the time of jetting and the wrong direction. It is difficult to make them collide,
It is unavoidable that a fluid that fails to collide is generated. Since the fluid that has failed to collide and collides eccentrically with the nozzle hole that advances straight and confronts it, there is a problem that the nozzle of the emulsifying unit and the metal member in the vicinity thereof are damaged, and the life of the equipment is shortened.

In order to prevent this, it has been proposed that the portion exposed to the space of the emulsified portion is made of a material having a high hardness such as a single crystal of diamond. It is inevitable that members around the nozzle will be damaged by repeated collisions of the nozzles and the life will be shortened accordingly. In addition, the emulsifying portion is of a small size, and there is a problem that it is difficult to process a material having high hardness into a small-sized component with high accuracy.

[0007] From the above, the present invention provides a jet impingement device that homogenizes fluids by collision of fluids and / or homogenizes fluids and / or crushes into fine particles using collisions between fluids. It is a main object of the present invention to provide an improved jet collision device which minimizes damage to an emulsifying section due to collision of a jet fluid and in particular prevents an opposed jet from directly colliding with a nozzle.

[0008] It is another object of the present invention to provide a jet abutment device with high efficiency of crushing and atomizing by utilizing emulsification dispersion by collision of fluids and / or collision of fluids. .

[0009]

In order to achieve the above object,
According to the first aspect of the present invention, there is provided a jet abutment device for obtaining an emulsified dispersion fluid and / or fine particles by causing high-pressure fluid jets ejected from at least a pair of nozzle means to collide with each other, wherein a housing having an internal chamber, First and second nozzle means attached to the housing to inject high pressure fluid into the chamber;
It said first and second nozzle means are jet direction of each is defined as between each other jets intersect at an angle at a point other party than each of the nozzle outlet, said first and
Adjusting the ejection direction of at least one of the two nozzle means
And an adjusting mechanism for the adjustment .

According to the first aspect of the present invention, the injection directions of the respective nozzle means are such that the injection trajectories of the high-pressure fluid injected from the first and second nozzle means intersect at an angle at one point in the chamber. Is stipulated. This allows the first and second
The high-pressure fluid ejected from the nozzle means collides obliquely with each other at one point in the chamber, and the collision force at this time homogenizes and / or atomizes the fluid.

That is, the direction of the nozzle means is adjusted so that the injection trajectory of each nozzle means intersects at one point at an angle,
The second nozzle means is not arranged on the ejection trajectory of the first nozzle means. For this reason, the nozzle means are not destroyed with each other, in other words, of the fluid ejected from the first nozzle means, the failed fluid does not reach the second nozzle means and damage the second nozzle means. .

In the present invention, the structure in which the fluids ejected from the respective nozzle means collide obliquely with each other is not limited to the structure in which the fluid to be collided is ejected from two directions, and may be a structure in which the fluids are ejected from three or more directions. . In any case, the nozzle means in the circumferential direction of the housing may be arranged at regular intervals, and this is used for efficiently emulsifying and / or dispersing the fluid energy of the jet flow from each nozzle means at the abutment point. it can.

As a mechanism for supplying a fluid to each nozzle means, for example, a mechanism for supplying the same fluid from one tank means to all nozzles, or a tank for supplying a separate fluid to each nozzle means is separately provided. Mechanism. The former configuration is a case where a plurality of fluids are mixed to some extent in advance, and the latter configuration is a case where a plurality of different fluids are used.

[0014] The term "emulsification and dispersion" as used in the present invention refers to
For example, it refers to emulsifying a hydrophilic and lipophilic fluid such as water and oil, or homogenizing by dispersing fine particles uniformly in a liquid.

[0015] Further, "fluidization of fluid" refers to finely crushing the fluid itself or / and the medium contained in the fluid by the impact of the collision of the fluids.
It is conceivable to perform on materials such as cosmetics, medicines, paints, ceramics, and electronic materials. For example, in the case of cosmetics, the fineness of the material used for the foundation etc. improves the covering power and improves the absorption of secretions, and in the case of ceramics, the mechanical strength of the material increases. Since it is inversely proportional to the square root of the particle size, there are advantages such as increasing the mechanical strength by making the material finer.

The configuration of the nozzle means is not particularly limited as long as the nozzle means can eject high-pressure fluid, but its arrangement and shape are determined so as not to be arranged on the ejection trajectory of other nozzle means.

According to a second aspect of the present invention, in the jet abutment device according to the first aspect, the jet force from the first and second nozzle means is received at the tip of the one point to disperse the fluid force of the jet flow. The apparatus is further characterized by further comprising a jet receiving means for causing the chamber to flow.

That is, in order to prevent the fluid that has failed to collide at the one point from colliding with the inner wall of the housing and damaging the inside of the housing, the position facing the nozzle means at the point beyond the one point. Is provided with a jet receiving means.

In the present invention, the fluid that has failed to collide at the one point collides with the jet receiving means, and the fluid force is dispersed. Therefore, there is no danger of the housing being damaged, and furthermore, even when the fluid collides with the jet receiving means, the fluid is emulsified and / or dispersed into fine particles.
In addition, there is an advantage that the efficiency of atomization is increased.

Examples of such a jet receiving means include a hard member that obliquely receives an impinging jet and disperses a fluid force as a component force, and a movable hard member that consumes the fluid energy of the jet as its own kinetic energy. Element,
Alternatively, a combination thereof may be used.

Further, according to a third aspect of the present invention, in the jet abutment device according to the second aspect, the jet receiving means includes a rotatable hard ball. Examples of the hard ball include a ceramic ball, a cemented carbide ball, and a diamond ball. In the present invention, when the hard ball receives the collision of the jet, it disperses the fluid energy as a component force and rotates to consume the fluid energy.

Further, the invention of claim 1 is characterized by further comprising an adjusting mechanism for adjusting the ejection direction of at least one of the first and second nozzle means.

That is, in the present invention, the adjusting mechanism adjusts at least one of the injection directions so that the other nozzle means intersects at a predetermined point on the injection trajectory of one nozzle means having a fixed injection angle. The collision position of the means is adjusted to the one point. Thereby, it is possible to cause the fluids to accurately collide with each other.

As such an adjusting mechanism, the member holding the nozzle means having a fixed ejection angle of the fluid is rotated or translated about a point, and the amount of rotation or translation of the member is adjusted. Thus, a mechanism for causing the fluids to accurately collide with each other, or a mechanism for adjusting the ejection angle of the nozzle means itself using a bearing device or the like so that the fluids collide with each other accurately can be used.

The number of nozzle means whose injection direction is adjusted by the adjusting mechanism may be determined in accordance with the number of solutions to be emulsified and dispersed or / and to be micronized. For example, when two kinds of fluids are emulsified and / or dispersed and / or micronized, 1
In the case where three types of fluids are emulsified and dispersed or / and formed into fine particles, two types may be used.

Further, in the jet abutment device according to claim 1, the housing has a cylindrical main body forming an internal chamber, and a first body attached to one end of the cylindrical main body to form a fluid inlet. And a second plug attached to the other end of the cylindrical main body and forming an outlet for a fluid to be emulsified and dispersed or / and atomized after collision from the internal chamber, wherein the first and the second plugs are provided. The two nozzle means are arranged in the internal chamber so that the mutually jetted flows intersect at an angle at a point ahead of each nozzle outlet. A pair of hard balls for receiving the jet flow and dispersing the fluid force of the jet flow is provided, and the housing is provided with an adjustment mechanism for adjusting the injection direction of at least one of the first and second nozzle means from outside. Are include those wherein the are.

[0027]

FIG. 1 is a longitudinal sectional view schematically showing an embodiment of the present invention, and FIG. 2 is a front view of a movable portion 1a in FIG.

In this embodiment, a cylindrical main body 1 constituting a housing forms an internal chamber 2, and an opening of one end of the cylindrical main body 1 forms an inlet for a fluid supplied from a common tank (not shown). A first plug 9 is screw-fitted, and a second plug 10 that forms a discharge port for a fluid that has collided and / or emulsified and / or atomized by collision in the inner chamber 2 is screwed into the other end opening. . On the inner wall of the inner chamber 2, mounting seats for the two nozzles 3 and 4 and flow paths 11a and 11b connecting the respective nozzles 3 and 4 to the fluid inlet of the first plug 9 are formed. ing.

The mounting seats provided at positions facing each other on the inner wall of the inner chamber 2 include pressing members 6a, 6b.
The nozzles 3 and 4 are fixed such that the injection angle is about 10 degrees lower than the horizontal and the injection trajectory intersects at a point on the central axis of the internal chamber 2 at an angle. The injection angle of the nozzle is an angle at which none of the nozzles receives collision of jets from nozzles facing each other, and
The angle is determined so that the loss of the fluid force is minimized when the two jets collide at the intersection. In the configuration of the present embodiment, the angle that satisfies the above condition is an angle that is about 10 degrees lower than horizontal, but the injection angle of the nozzle is determined so as to satisfy the above condition in accordance with the configuration of the apparatus.

The holding members 6a and 6b are formed by a pair of screws 14
a, 14b, which are fixed to the inner wall of the tubular main body and located on the ejection trajectories of the facing nozzles 3, 4;
b is notched (hereinafter, referred to as a notched area). The cutout areas 13a and 13b are provided with nozzles 3 facing each other.
4 is provided to allow the non-colliding jet flow from the jet fluid from 4 to pass therethrough.
Since the collision of the injection fluid is avoided in a and 6b, there is no danger that the life is shortened due to damage.

A part (hereinafter, referred to as a movable part) 1a of the tubular main body 1 to which one nozzle 3 is attached is detachable from another part (hereinafter, referred to as a fixed part) 1b. It is fixed to the fixed portion 1b by a pin 7a as an adjusting mechanism and holding screws 7b and 7c. still,
Although only two set screws 7b and 7c appear in FIG. 1, the movable portion 1a is fixed by four set screws 7b, 7c, 7d and 7e as shown in FIG.

The movable portion 1a is rotatable about the pin 7a with respect to the cylindrical main body 1, and the jet from the nozzle 4 provided on the fixed portion 1b side is jetted from the nozzle 3 on the movable portion 1a side. Is adjusted so as to collide exactly at a point substantially on the central axis in the internal chamber 2, and is fixed by the screw 7b in that state.

Further, a recess is provided on the inner wall of the chamber at a position facing one of the nozzles 3 and 4 at one point where the two jets collide with each other, and a ceramic as a jet receiving means is provided in the recess. The balls 5a and 5b are stored.

The ceramic balls 5a and 5b are not colliding with each other in the notched region 13 of the jet flow from the facing nozzle.
The jet flow passing through a and 13b is received at an eccentric position, and the fluid energy is dispersed as a component force, and the fluid energy is consumed by its own rotation. Since the collision positions of the jets on the surfaces of the ceramic balls 5a and 5b are dispersed by this rotation, it is possible to prevent the ceramic balls from being broken or cracked due to the intensive jet collision.

In the jet collision device having such a configuration,
The high-pressure fluid introduced from the first plug 9 is
The nozzles are directed toward the respective nozzles 3 and 4 through the flow paths 11a and 11b provided in the inner chamber 2, and are sprayed from the nozzles 3 and 4 toward one point on the central axis of the internal chamber 2. At one point on the central axis of the inner chamber 2, high-pressure fluids ejected from the two nozzles collide with each other to emulsify and / or disperse and / or become fine particles. The direction of the jet may shift and the intersection may be inaccurate.

In such a case, the test aluminum rod 12 is inserted into a predetermined position inside the internal chamber 2, that is, a position crossing one point on the central axis where the jets collide with each other, and the injection is tried. Thereafter, when the aluminum rod 12 is taken out, two small holes are formed at positions where the jet of the aluminum rod 12 collides. The distance between the small holes is obtained by measurement, and based on this, the movable part 1a is rotated by a required amount so that the jets from both nozzles 3 and 4 can accurately collide at one point on the central axis of the internal chamber 2. Adjust the position of 3. The time for inserting the aluminum rod 12 depends on the pressure of the jet,
Usually, small holes are formed within a few minutes.

At the lower part of the movable part 1a and on the side of the second plug 10, two measuring pins 8a and 8b for measuring the amount of rotation of the movable part 1a with a micrometer or the like are arranged in directions perpendicular to each other. Is provided. Second Bragg 10
(Hereinafter, referred to as side pins) 8b
A pin (hereinafter referred to as a lower pin) 8a provided on the movable portion 1a is attached at a position perpendicular to and separated from the pin 8a, and its central axis is on a straight line passing through the center of the pin 7a and the center of the nozzle 3. , And a distance 2L that is twice the distance L from the center of the pin 7a to the center of the nozzle 3.

To adjust the collision position of the two jets,
The distance between the two small holes formed in the test aluminum rod 12 by the collision of the jets from the three nozzles 3 and 4 is determined, and the movable part moves toward the position where the jet from the nozzle 4 attached to the fixed part 1b collides. The part 1a is rotated. The amount of rotation at this time is such that the position of the side pin 8b is 2L, which is twice the distance L from the center of the pin 7a to the center of the nozzle 3, so that the lower pin 8a is positioned at the distance between the two small holes. It only has to be moved twice as long.

[0039]

As described above, according to the present invention, the injection trajectories of the high-pressure fluid injected from the first and second nozzle means intersect at one point in the chamber at an angle, respectively. Since the ejection direction of the nozzle means is determined, damage to the internal chamber due to the collision of the ejection fluid is reduced as much as possible, and in particular, a jet collision device in which the opposed jet does not directly collide with the nozzle can be obtained.

Further, a jet abutment device can be obtained in which the collision position can be easily adjusted and a plurality of fluids can reliably collide at one point. Of course, it is also possible to obtain a jet-collision device in which the efficiency of emulsification and / or dispersion and / or atomization by collision of fluids is increased.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a jet abutment device according to an embodiment of the present invention.

FIG. 2 is a front view of the movable section 1a viewed from the inside of the main body in a state where the movable section 1a in FIG. 1 is detached from the main body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cylindrical main body 1a Movable part 1b Fixed part 2 Chamber 3, 4 Nozzle 5a, 5b Ceramic ball 6a, 6b Pressing member 7a Pins 7b, 7c, 7d, 7e Screw 8a, 8b Measurement pin 9 First plug 10 Second Plugs 11a, 11b Flow paths 12 Aluminum rods 13a, 13b Cutout areas 14a, 14b Screws

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Tian Wei 2410 Motoe, Uozu City, Toyama Prefecture Sugino Machine Co., Ltd. (56) References JP-A-6-47264 (JP, A) JP-A-50-1554862 ( JP, A) JP-A-58-199058 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B01F 3/08, 5/02

Claims (3)

(57) [Claims] 1. A jet collision device for obtaining emulsified dispersion fluid and / or fine particles by causing high-pressure fluid jets jetted from at least a pair of nozzle means to collide with each other, comprising: a housing having an internal chamber; First and second nozzle means attached to the housing so as to inject high-pressure fluid, wherein the first and second nozzle means are arranged such that mutual jet flows are located ahead of the respective nozzle outlets. The respective jetting directions are determined so as to intersect at an angle with each other, and the jetting direction of at least one of the first and second nozzle means is determined.
A jet collision device comprising an adjustment mechanism for adjusting the direction . 2. A jet receiving means for receiving a jet from the first and second nozzles at a point in front of the one point and dispersing a fluid force of the jet is further provided in the chamber. 2. The jet abutment device according to 1. 3. The jet abutment device according to claim 2, wherein said jet receiving means includes a rotatable hard ball.