JP3686528B2 - Fluid collision device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fluid collision device for emulsifying a fluid or atomizing a substance associated with the fluid by colliding a high-pressure fluid with a hard body.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in this type of fluid collision device, a plate that pulverizes a substance (medium) in a fluid by colliding a high-pressure fluid ejected from an ejection nozzle against a plate-like hard body, or emulsifies the fluid. A collision method is used.
[0003]
In this case, a fluid introduced from a flow path outside the chamber is caused to collide with a hard plate fixedly installed in the main body chamber by high-pressure jet from the jet nozzle. A shaped sintered diamond is used.
[0004]
Such fluid medium micronization and fluid emulsification by a fluid collision device are used for a wide range of materials such as foods, cosmetics, paints, ceramics, and electronic materials.
[0005]
For example, in cosmetics, the properties desired for cosmetics are further improved by, for example, increasing the skin covering power and the absorbability of secretions by making the foundation material fine. In addition, the mechanical strength of ceramic materials improves as the particles become finer. In addition, fluid collision devices are widely used for foods that contain beverages, paints, cosmetic emulsions, etc. that require improved affinity between compositions by emulsification (emulsification) and uniform dispersion of the medium. Has been.
[0006]
[Problems to be solved by the invention]
However, in the conventional plate collision type fluid collision apparatus as described above, only the collision site of the high-pressure fluid on the plate surface is locally worn, and in some cases, it penetrates in several hours. As described above, since the life of the hard plate as the collision member is very short, when a relatively large amount of fluid is targeted, frequent replacement of the plate is required, which is not only a troublesome and troublesome process but also cost. It will be high.
[0007]
SUMMARY OF THE INVENTION In view of the above problems, the present invention is intended to provide a fluid collision apparatus that can extend the life of a collision member as compared with the conventional one and can efficiently perform the formation of a fluid medium into a fine particle or an emulsification treatment.
[0008]
[Means for Solving the Problems]
In order to solve the above-described problem, a fluid collision apparatus according to the invention described in claim 1 is a fluid collision apparatus that causes a high-pressure fluid from an injection nozzle to collide with a hard body disposed in a chamber body, wherein the hard body includes: In the chamber main body, it is composed of a sphere that is rotatably supported eccentrically from the injection axis of the high-pressure fluid.
[0009]
According to a second aspect of the present invention, there is provided the fluid collision apparatus according to the first aspect, wherein the sphere is displaced and positioned in a direction crossing the jet axis of the high pressure fluid. It has a mechanism.
[0010]
According to a third aspect of the present invention, the fluid collision device according to the first aspect is the fluid collision device according to the first aspect, wherein the spherical body is supported in a direct point contact state against the collision force of the high pressure fluid. 2 spheres are further provided.
[0011]
In the present invention, since the hard body as the collision member is a sphere, and the hard sphere is rotatably supported while being eccentric from the injection axis of the high-pressure fluid injected from the injection nozzle in the chamber body, The fluid collides with the hard sphere surface with an incident angle less than 90 degrees, and the hard sphere is rotated by the component force of the collision force.
[0012]
Therefore, in the fluid collision apparatus according to the present invention, the hard sphere always rotates while receiving the collision of the high-pressure fluid. For this reason, the collision position on the surface of the hard sphere always changes, and local wear on the surface of the collision member is avoided as in the prior art.
[0013]
Even in the hard sphere in the present invention, the surface gradually wears with the passage of time of use, but since the collision position of the high-pressure fluid always changes due to the rotation of the sphere, the wear is also dispersed on the surface of the sphere. The service life is extended until it becomes too small to withstand. Therefore, this hard sphere can withstand long-term use compared to the conventional flat collision member, and the frequency of replacement of the member is greatly reduced. In this case, the work efficiency can be improved.
[0014]
As the material of the hard sphere, conventionally used materials such as ceramics and sintered diamond can be used.
[0015]
The amount of eccentricity of the hard sphere with respect to the high-pressure fluid ejection axis is determined by the arrangement position of the hard sphere in the direction crossing the ejection axis. Therefore, if an adjustment mechanism that can displace the hard sphere in the direction crossing the injection axis and position it at an arbitrary arrangement position is provided, an arbitrary amount of eccentricity can be obtained by adjusting the position. Specifically, the support member supporting the hard sphere in the chamber main body may be displaced and fixed in the direction crossing the injection axis.
[0016]
Also, by providing a rotatable second sphere that directly supports the hard sphere in a point contact state against the impact force of the high pressure fluid, the rotation of the hard sphere itself becomes smoother and the distribution of wear positions becomes more uniform. This contributes to extending the life of the hard sphere as a collision member.
[0017]
The second sphere may be constituted by a single sphere or a plurality of spheres that support the bottom surface (surface facing the fluid collision surface) of the hard sphere, and the hard sphere is rotatably supported. The rotation of the hard sphere becomes smoother as the rotation support by the second sphere is increased instead of the fixed bearing. For example, if there are three or more rotating bearings for the hard sphere, all the bearings may be constituted by a rotating bearing by the second sphere, and a fixed bearing may not be included.
[0018]
Usually, a flow path for leading the fluid after colliding with the hard sphere to the outside of the chamber body is formed in the chamber body of the collision apparatus. It is preferable to provide a groove for allowing the fluid after collision to flow down on the jet nozzle side surface of the member around the sphere.
[0019]
The effect of atomization by the fluid collision is the largest when the surface collides with the surface of the hard sphere in the orthogonal direction, that is, when the amount of eccentricity of the injection axis with respect to the hard sphere is 0 and the impact impact is maximum. As the value increases, the impact at the time of fluid collision decreases, and the effect of atomization also decreases. Furthermore, the rotation speed of the ball also changes depending on the amount of eccentricity, and the effect of atomizing the fluid medium also decreases when the rotation is too fast. Accordingly, the amount of eccentricity of the hard sphere is adjusted within the range of the collision angle and the rotational speed at which the effect of atomizing or emulsifying the target fluid medium can be sufficiently obtained.
[0020]
Also, the smaller the distance between the fluid ejection nozzle and the hard sphere surface, the greater the effect of atomization, but the faster the wear rate of the hard sphere. Therefore, the distance needs to be set as appropriate according to the object to be atomized and its processing amount.
[0021]
Alternatively, if the rotation of the hard sphere is too fast, or if the primary stop is necessary during the fluid collision work, as a means to quickly stop the rotation of the sphere in inertia, It is also conceivable to provide a brake mechanism for the sphere.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of a fluid collision apparatus according to the present invention will be described. FIG. 1 is a schematic cross-sectional view showing the configuration of the main part of the collision device according to the present embodiment, and FIG. 2 is an exploded view of the main part.
[0023]
As shown in FIGS. 1 and 2, the chamber main body 1 in the present embodiment is mainly composed of three members that are combined with each other via a seal member such as an O-ring. Other than the outlet, it is formed inside a sealed high-pressure fluid collision space 50. That is, the chamber main body 1 includes a rear wall member 10 having a holding portion 12 for the ceramic hard sphere 2 and a cylindrical member that is fitted to the peripheral portion of the rear wall member 10 and surrounds the hard sphere holding portion 12. 30 and a front wall member 40 fitted to the front peripheral edge of the cylindrical member 30 and provided with an ejection nozzle 41 directed inward of the chamber.
[0024]
The holding part 12 has a concave shape such that a cylinder protruding from the inner surface side of the rear wall member 10 to the collision space 50 is cut obliquely. The hard sphere 2 is housed in the recess 13, and the cover member 20 is screwed and fixed to the holding portion 12 from the front side so as to cover the hard sphere 2, and the sphere 2 is rotatable in the recess 13. In the present embodiment, the hard sphere 2 has a diameter of 15 mm to 20 mm, and the holding portion 12 is set to a size that can store the hard sphere 2 of this size in a rotatable manner.
[0025]
In the holding part 12, a bottom support sphere 14 and a side support sphere 15 rotate as second spheres for rotatably supporting the hard sphere 2 on the bottom surface (rear side) and the inner peripheral side surface in the recess 13, respectively. Installed as possible. On the other hand, the cover member 20 is provided with an opening 21 that exposes a part of the surface of the hard sphere 2 that becomes a collision site, which will be described later, and the surface of the hard sphere 2 formed by the both supporting spheres (14, 15). The cover member 20 is fixed to the holding portion 12 in a state where the edge portion of the opening 21 is slidably contacted with the periphery of the exposed portion of the hard sphere 2 so that the supporting state in the point contact is maintained. The hard sphere 2 is held rotatably in the recess 13 of the holding part 12.
[0026]
The holding portion 12 can be displaced on the inner wall surface of the rear wall member 10 in a direction orthogonal to the axis of the cylindrical member 30, that is, the axis of the chamber body 1, and can be positioned by this displacement. The amount of displacement of the holding portion 12 can be adjusted by rotating the eccentric amount adjusting screw 3 that is screwed into the cylindrical member 30 and is rotatably connected to the holding portion 12. In the present embodiment, the displacement direction is a vertical and orthogonal direction parallel to the paper surface of FIG.
[0027]
Further, the ejection nozzle 41 of the front wall member 40 is attached so that the fluid ejection axis coincides with the axis. Therefore, when the holding portion 12 is displaced in the direction perpendicular to the axis by the rotation of the eccentricity adjusting screw 3, the hard sphere 2 held in the recess 13 is also displaced in the same direction. 2 can be positioned with a predetermined eccentricity with respect to the injection axis of the injection nozzle 41. That is, in this embodiment, the adjusting screw 3 constitutes an eccentricity adjusting mechanism for eccentric positioning of the hard sphere 2.
[0028]
Furthermore, in this embodiment, as shown in FIG. 1, the holding part 12 has a special shape such that the cylinder is cut in a plane oblique to the axis (the upper side is longer than the lower side in FIG. 1). Therefore, when the cover member 20 is fixed with a screw, the surface of the hard sphere 2 is biased downward with respect to the nozzle injection axis in the opening 21 provided on the substantially central nozzle side of the cover member 20. Will be exposed.
[0029]
In this way, the high-pressure fluid ejected from the ejection nozzle 41 toward the surface of the hard sphere 2 exposed at a position deviated downward from the ejection axis is a certain amount of eccentricity, and the incident angle is less than 90 degrees. , The fluid after the collision flows downward and rearward mainly along the curved surface of the hard sphere 2, and the component force of the collision force acts on the hard sphere 2 downward and rearward. As a result, the hard sphere 2 rotates as indicated by an arrow A.
[0030]
In response to the rotation of the hard sphere 2, the bottom support sphere 14 and the side support sphere 15 that support the hard sphere 2 in a surface point contact state with each other also rotate, and the support position by these support spheres is appropriately set with respect to the collision point. By defining, the rotation axis of the hard sphere 2 is naturally swung, and the collision points of the high-pressure fluid are distributed over almost the entire surface of the hard sphere.
[0031]
Further, the rear wall member 10 is formed with a discharge port 11 for leading out the fluid after the collision. A fluid flow path 16 communicating with the discharge port 11 is formed below the holding portion 12. A groove 22 is also formed on the surface side of the cover member 20 to guide the fluid after the collision downward in the chamber.
[0032]
When the fluid collision apparatus according to the present embodiment is used, as shown in FIG. 2, the main body chamber 1 including the rear wall member 10, the holding portion 12, the hard sphere 2, the cover member 20, the cylindrical member 30, and the front wall member 40. Are assembled, and the hard sphere 2 is positioned with the adjusting screw 3 so as to have a predetermined eccentricity with respect to the injection axis of the injection nozzle 41. In this embodiment, it adjusted so that the eccentric amount of the hard sphere 2 with a diameter of 15 mm-20 mm might be in the range of 0-5 mm. If the amount of eccentricity is within this range, the impact drop during collision that determines the effect of atomizing the fluid medium is small.
[0033]
On the other hand, a high-pressure fluid supply pipe (not shown) for guiding a pressurized fluid from a fluid supply source (not shown) containing a medium intended for atomization by collision is connected to the front side plug 42 of the chamber body 1. In addition, a container (not shown) for collecting the processed fluid is piped to the discharge port 11.
[0034]
When such work preparation is completed, supply of high-pressure fluid from the supply source to the injection nozzle 41 is started. When the high-pressure fluid is ejected from the ejection nozzle 41, the ejection fluid begins to collide with the surface of the hard sphere 2 that is eccentric with respect to the ejection axis, and at the same time, the hard sphere 2 rotates by receiving the collision. Start.
[0035]
While the continuous jetting collision of the high-pressure fluid proceeds, the rotation of the hard sphere 2 also continues. Therefore, the collision position of the high-pressure fluid on the surface of the hard sphere 2 is constantly changed by the rotation of the hard sphere 2, and wear due to the collision is dispersed on the surface of the hard sphere 2, so that it is specified as in the past. It is possible to avoid the occurrence of a through hole in the collision member due to the local wear of only one point.
[0036]
The hard sphere 2 can be used until the overall wear progresses and it is difficult to maintain a rotatable holding state in the holding portion 12, and as a collision member compared to a conventional fixed collision plate. The lifetime of the is significantly increased. Accordingly, even when the collision target fluid is large and processed for a long time, the replacement frequency of the hard sphere 2 is low, and labor and time required for the replacement can be saved, and the work efficiency is improved.
[0037]
In the above embodiment, the eccentric amount of the hard sphere 2 is adjusted by positioning the holding portion 12 in the vertical vertical direction by the adjusting screw 3 with respect to the injection axis of the injection nozzle 41 coaxial with the axis of the chamber body 1. Although the configuration performed by displacement is shown, the present invention is not limited to this, and further eccentricity adjustment by displacement in the horizontal direction corresponding to the front and back direction on the paper surface of FIG. 1 or other crossing direction is possible. It is good also as a structure.
[0038]
Further, in the above-described embodiment, the configuration in which two spheres of the bottom support sphere 14 and the side support sphere 13 are provided as the second sphere, but of course, the multi-point contact support of the hard sphere 2 with three or more spheres. In this case, the apparatus can be operated in a substantially non-contact state with respect to the cover member 20 of the hard sphere 2.
[0039]
Further, in the above embodiment, the eccentric direction of the hard sphere is the vertical and orthogonal direction parallel to the paper surface of FIG. 1 with respect to the axis of the chamber body, but the present invention is not limited to this, and the high-pressure fluid Any direction may be used as long as the direction intersects the injection axis.
[0040]
【The invention's effect】
As described above, according to the fluid collision apparatus of the present invention, the service life of the collision member can be extended, and there is an effect that the medium fine particles and the emulsification can be efficiently performed.
[Brief description of the drawings]
FIG. 1 is a schematic cross-sectional view showing a configuration of a main part of a fluid collision apparatus according to an embodiment of the present invention.
2 is an exploded view of the chamber body of FIG. 1. FIG.
[Explanation of symbols]
1: Chamber body 2: Hard sphere 3: Eccentricity adjusting screw 10: Back wall member 11: Discharge port 12: Holding portion 13: Recess 14: Bottom support sphere 15: Side support sphere 16: Channel 20: Cover member 21: Opening 22: Groove 30: Cylindrical member 40: Front wall member 41: Injection nozzle 42: Plug 50: Collision space

Claims (3)

In a fluid collision apparatus that collides a high-pressure fluid from an injection nozzle with a hard body arranged in a chamber body,
The fluid collision apparatus according to claim 1, wherein the rigid body is formed of a spherical body that is rotatably supported in an eccentric manner with respect to an injection axis of the high-pressure fluid in the chamber body. The fluid collision apparatus according to claim 1, further comprising an eccentricity adjustment mechanism that positions the sphere by displacing the sphere in a direction crossing the jet axis of the high-pressure fluid. The fluid collision apparatus according to claim 1, further comprising a rotatable second sphere that supports the sphere in a direct point contact state with respect to a collision force of the high-pressure fluid.

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