JP2014117635A5 - - Google Patents

Description

Fluid mixer and device using fluid mixer

  The present invention relates to a fluid mixer used for fluid transportation piping in various industries such as a chemical factory, a semiconductor manufacturing field, a food field, a medical field, and a bio field, and an apparatus using the fluid mixer.

  Conventionally, as a method of uniformly mixing a fluid flowing in a pipe after being mounted in a pipe, a method using a twisted blade-shaped static mixer element 101 as shown in FIG. 10 has been generally used (for example, Patent Document 1). reference). Usually, the static mixer element 101 is a series of a plurality of minimum unit members that are twisted 180 degrees around the longitudinal axis of the rectangular mixer element 101 in a series so that the twist directions are alternately different. It has a combined structure. A static mixer is formed by disposing the static mixer element 101 in the tube 102, attaching the mail connector 103 to both ends of the tube 102, attaching the flare 105, and tightening the tightening nut 104. At this time, the outer diameter of the static mixer element 101 is designed to be approximately equal to the inner diameter of the tube 102 so that the fluid is agitated.

JP 2001-205062 A

  However, the fluid mixing method using the conventional static mixer stirs and mixes the mixed fluid in which the main fluid and the sub fluid are mixed non-uniformly on the upstream side of the static mixer. Therefore, in the case where the main fluid and the sub fluid are difficult to be mixed with each other, there is a possibility that they cannot be effectively mixed. In particular, when the viscosities of the main fluid and the sub-fluid are greatly different, the components in the mixed fluid tend to be difficult to be finely divided and dispersed by the static mixer element 101. Further, since the static mixer has the static mixer element 101 disposed therein, depending on the mixed fluid, components in the mixed fluid may adhere to and accumulate on the static mixer element 101.

  If the viscosities of the main fluid and sub-fluid differ greatly, there is a method to install a tank in the piping line and mix the mixed fluid uniformly in the tank, although not shown in particular. Not only is a large space required, but the apparatus becomes large.

  Therefore, an object of the present invention is to provide a fluid mixer having a compact configuration and an apparatus using the fluid mixer that can effectively mix even fluids that are difficult to mix with each other.

According to the first aspect of the present invention, in the fluid mixer for mixing a plurality of fluids, a main flow path having a main fluid inlet into which the main fluid flows and a mixed fluid outlet from which the mixed fluid flows out, and a sub flow into which the sub fluid flows in. A cross-sectional shape of an end portion of a joining portion of the communication flow path that includes the sub flow path having a fluid inlet, and a plurality of communication flow paths that connect the main flow path and the sub flow path; The length of the main channel in the direction orthogonal to the channel axis direction is longer than the length of the main channel in the channel axis direction, and the channel cross-sectional shape of the main channel is changed. A fluid mixer is provided.

That is, in the first aspect of the invention, the sub-fluid is divided into multiple stages and mixed into the main fluid by the plurality of communication channels that communicate the sub-channel and the main channel. Can be mixed effectively. In particular, when the main fluid is mixed with a sub-fluid in an amount equal to or greater than that of the main fluid, the main fluid and the sub-fluid can be effectively mixed. Further, the cross-sectional shape of the end portion of the joining portion of the communication channel in the joining portion where the communication channel joins the main channel is a direction perpendicular to the channel axial direction of the main channel rather than the length of the main channel in the channel axial direction Is longer, the contact area between the main fluid and the subfluid can be increased, and the main fluid and the subfluid can be effectively mixed. In addition, since the cross-sectional shape of the main channel is changed, the mixed fluid can be stirred inside the main channel, and the main fluid and the subfluid can be effectively mixed. In particular, when there is a large viscosity difference between the main fluid and the subfluid, such as mixing a fluid having a high viscosity with a fluid having a low viscosity, it is difficult to mix the main fluid and the subfluid uniformly. And the secondary fluid can be mixed effectively. Here, in the present invention, “changing the cross-sectional shape of the flow path” includes changing the dimensions of the same type of shape. For example, when the circular diameter is changed, the channel cross-sectional shape is changed.

  According to a second aspect of the present invention, there is provided a fluid mixer characterized in that the flow passage cross-sectional area of the main flow passage is enlarged stepwise downstream of at least one of the merging portions.

  That is, in the second aspect of the invention, since the channel cross-sectional area of the main channel downstream from the junction is enlarged stepwise, the chemical liquid flowing through the communication channel can be smoothly flowed into the main channel.

According to the invention of claim 3, perpendicular length in a direction perpendicular to the flow path axial direction of the main flow channel in the cross-sectional shape of the end of the merging portion of the communication passage is in the flow path axial direction of the main channel A fluid mixer is provided that is substantially the same as the maximum length in the direction of the movement.

That is, in the invention of claim 3, the length in the direction perpendicular to the flow axis direction of the main flow path in the cross-sectional shape of the end of the merging portion of the communication flow path is the maximum in the direction perpendicular to the flow axis direction of the main flow path. Since the length is substantially the same, the contact area between the main fluid and the subfluid at the junction can be maximized, and the main fluid and the subfluid can be effectively mixed.

  According to the invention of claim 4, the main channel is connected to the fluid inlet, a first channel connected to the main fluid inlet, a spiral channel connected to the first channel, and the spiral channel. A plurality of communication channels including a second channel and the mixed fluid outlet connected to the second channel, wherein the sub-channel is formed to be located inside a spiral shape of the spiral channel. Are respectively branched from different positions of the sub-flow path and connected to the spiral flow path at different positions of the helical flow path, respectively.

  That is, in the invention of claim 4, the main channel is the fluid inlet, the first channel connected to the main fluid inlet, the spiral channel connected to the first channel, and the second channel connected to the spiral channel. And a mixed fluid outlet connected to the second channel, the sub channel is formed so as to be located inside the spiral shape of the spiral channel, and the main channel and the sub channel are communicated by the communication channel. Therefore, the fluid mixer can be formed compactly.

  According to the invention of claim 5, a spiral groove is formed on the outer peripheral surface, and the first flow path that connects the main fluid inlet and the spiral groove, and the mixed fluid outlet and the spiral groove are connected inside. A main body portion formed with the second flow channel, the sub flow channel formed therein, and the communication hole connecting the sub flow channel and the spiral groove; and an outer peripheral surface of the main body portion A fluid mixer, wherein the spiral channel is formed by the spiral groove and an inner peripheral surface of the casing, and the communication hole serves as the communication channel. Provided.

  That is, in the invention of claim 5, by forming the main body and the casing as described above, a fluid mixer having not only excellent mixing performance but also a small number of parts and a simple and compact shape. Can be formed.

  According to the invention of claim 6, the main body portion is formed with the main fluid inlet and the sub-fluid inlet at one end surface, and the mixed fluid outlet is formed at the other end surface. A fluid mixer is provided.

  That is, in the invention of claim 6, a fluid mixer having a simple and compact shape can be formed by forming the main fluid inlet, the sub fluid outlet and the mixed fluid outlet on the end face of the main body.

  According to the invention of claim 7, the fluid mixer according to any one of claims 1 to 6 and a flow path forming means for forming a flow path for guiding a plurality of different fluids to the fluid mixer. An apparatus using a fluid mixer is provided.

  That is, according to the seventh aspect of the present invention, an apparatus for mixing various different fluids can be formed by providing the fluid mixer and the flow path forming means.

  According to invention of Claims 1-6, a main fluid and a subfluid can be mixed effectively, and in addition, the fluid mixer of a compact shape can be provided.

  According to the seventh aspect of the present invention, it is possible to provide an apparatus for mixing various different fluids.

It is a schematic diagram which shows the fluid mixer which concerns on 1st embodiment of this invention. It is an expansion perspective view of the confluence | merging part of the fluid mixer which concerns on 1st embodiment of this invention. It is a perspective view which shows schematic structure of the fluid mixer which concerns on 2nd embodiment of this invention. FIG. 4 is a cross-sectional view of the fluid mixer shown in FIG. 3 taken along line AA intersecting the central axis of the outer diameter of the spiral channel. FIG. 4 is a cross-sectional view of the fluid mixer shown in FIG. 3 taken along line BB that does not intersect the central axis of the outer diameter of the spiral flow path. It is a longitudinal cross-sectional view which shows the fluid mixer which concerns on 3rd embodiment of this invention. It is a longitudinal cross-sectional view which shows the fluid mixer which concerns on 4th embodiment of this invention. It is a schematic diagram which shows embodiment of the apparatus using the fluid mixer of this invention. It is a schematic diagram which shows the modification of embodiment of the apparatus using the fluid mixer of this invention. It is a longitudinal cross-sectional view which shows the conventional static mixer.

  Hereinafter, although an embodiment of the present invention is described with reference to drawings, it cannot be overemphasized that the present invention is not limited to this embodiment.

―First embodiment―
Hereinafter, with reference to FIGS. 1-2, the fluid mixer which concerns on 1st embodiment of this invention is demonstrated.

  Referring to FIG. 1, the fluid mixer according to the first embodiment includes a main channel 1, a sub channel 2, and a communication channel 3. The main flow path 1 has a main fluid inlet 4 that is an opening through which the main fluid flows and a mixed fluid outlet 5 that is an opening through which the mixed fluid flows. The sub-flow path 2 has a sub-fluid inlet 6 that is an opening through which the sub-fluid flows. The communication flow path 3 branches from the sub flow path 2 at the branch portion 7 of the sub flow path 2, merges with the main flow path 1 at the merge section 8 of the main flow path 1, and communicates the main flow path 1 and the sub flow path 2. ing.

  In the first embodiment, the main channel 1 is formed in a shape in which the channel cross section is formed by alternately connecting a circular shape and an elliptical shape, and the flow channel cross-sectional shape of the merging portion 8 is an elliptical shape. The part 8 is provided with an opening corresponding to the shape of the joining part end 10 of the communication channel 3. The channel cross-sectional area of the main channel 1 increases step by step for each confluence 8 as it approaches the mixed fluid outlet 5. That is, the flow path cross-sectional area of the section to the merge sections 8b to 8c is larger than the flow path cross-sectional area of the section to the merge sections 8a to 8b, and the merge sections 8c to 8c to the flow path cross-sectional area of the sections to 8b to 8c. The channel cross-sectional area of the section up to 8d is larger. In 1st embodiment, the flow-path cross-sectional area of the confluence | merging part 8 is the flow-path cross-sectional area of the main flow path 1 of the upstream nearest the confluence | merging part 8a-8d, and the communication flow path 3a merged by the confluence | merging part 8a-8d. It is formed so as to be substantially the same as the sum of the flow path cross-sectional areas of the merging portion end portions 10a to 10d of ˜3d. However, in all the merging portions 8, the channel cross-sectional area of the merging portion 8 may not be enlarged, and only one of the merging portions 8 may be enlarged in cross-sectional area. Alternatively, the channel cross-sectional area of the main channel 1 may be constant from the main fluid inlet 4 to the mixed fluid outlet 5.

The sub-channel 2 has a circular channel cross-sectional shape, for example, and has a constant channel cross-sectional area. Each communication flow path 3a-3d is arrange | positioned so that each space | interval may become substantially the same, and it is formed so that each length may become substantially the same. Moreover, although the flow path cross-sectional area of the communication flow path 3 is constant, the cross-sectional shape of the flow path is different between the branch end 9 and the merge end 10, and the branch end 9 has a circular shape. Is formed. On the other hand, referring to FIG. 2, the flow channel cross-sectional shape of the communication flow channel 3 is formed in an elliptical shape at the merge portion end 10. The elliptical short axis is the same as the flow axis direction of the main flow path, and the long axis of the elliptical shape is orthogonal to the radial direction of the main flow path, that is, the flow flow axis direction of the main flow path in the configuration of the first embodiment. The major axis is formed so as to be substantially the same as the maximum length in the direction orthogonal to the channel axial direction of the main channel. In the first embodiment, the cross-sectional shape of the merge portion end portion 10 of the communication flow channel 3 is formed in an elliptical shape, but the cross-sectional shape of the main flow passage 1 in the cross-sectional shape of the merge portion end portion 10 is longer than the length in the flow axis direction. There is no particular limitation as long as the length of the main flow path 1 in the direction orthogonal to the flow path axis direction is longer. In addition to the elliptical shape, for example, a rectangular shape, a parallelogram shape, a crescent shape, and the like can be given.

  Next, the operation of the fluid mixer according to the first embodiment of the present invention will be described with reference to FIG.

  First, a main fluid that is water in the first embodiment, which flows in a pipe line located upstream of the fluid mixer, flows into the main flow path 1 from the main fluid inlet 4. Similarly, in the first embodiment, a secondary fluid, which is a chemical solution, flows through a piping line located upstream of the fluid mixer, and flows into the secondary flow path 2 from the secondary fluid inlet 6. In 1st embodiment, the viscosity of a chemical | medical solution is larger than the viscosity of water. When the chemical solution reaches the branching portion 7a from the auxiliary fluid inlet 6, the chemical solution is branched and flows into the communication channel 3a. When the chemical liquid flowing through the communication flow path 3a reaches the merging portion 8a, the chemical liquid flows into the main flow path 1 from the communication flow path 3a. At this time, the amount of the chemical solution that has flowed into the main flow path 1 through the merging portion 8a is set in advance so as to be easily mixed with the water flowing through the merging portion 8a. Similarly, the chemical solutions that have reached the branch portions 7b to 7d are respectively branched and flow into the main flow path 1 through the communication flow paths 3b to 3d and the merge sections 8b to 8d. At this time, the amounts of the chemicals flowing into the main flow path 1 through the merging portions 8b to 8d are set in advance so as to easily mix with the mixed fluid flowing in the merging portions 8b to 8d, respectively. Thus, water and a chemical | medical solution can be effectively mixed by dividing | segmenting the chemical | medical solution of the quantity which is easy to mix with water into multistep with respect to water. The reason why water and chemical liquid can be mixed effectively is that the viscosity of the mixed fluid of water and chemical liquid increases as the amount of chemical liquid flowing into the water increases, and the viscosity of the mixed fluid and chemical liquid One reason is that the difference is small.

  When the chemical liquid flowing through the sub flow path 2 flows into the water flowing through the main flow path 1, the flow rate of the fluid flowing through the main flow path 1 increases. Here, the flow path cross-sectional area of the main flow path 1 is expanded step by step for each of the merging portions 8a to 8d, and the flow passage cross-sectional areas of the merging portions 8a to 8d are the closest to the merging portions 8a to 8d. Since it is formed so as to be substantially the same as the sum of the cross-sectional areas of the upstream main flow channel 1 and the branch end portions 10a to 10d of the communication flow channels 3a to 3d, the chemical solution flowing through the communication flow channels 3a to 3d Can smoothly flow into the main flow path 1.

In the first embodiment, the flow path cross-sectional shape of the merge part end portions 10 a to 10 d of the communication flow paths 3 a to 3 d is an elliptical shape, and the major axis of the elliptical shape is orthogonal to the flow path axis direction of the main flow path 1. Since it is formed in the same direction as the direction in which water is used, it becomes easier to mix water and chemicals. In particular, when the elliptical long axis is substantially the same as the maximum length in the direction orthogonal to the flow axis direction of the main flow path 1 and the short axis is sufficiently long and short compared to the long axis, the drug solution is supplied to the main flow path 1. Can flow almost simultaneously over a wide range in the direction orthogonal to the flow path axis direction. As a result, the contact area between water and the chemical solution can be increased, and water and the chemical solution can be mixed effectively. In particular, when the viscosity of the chemical solution is significantly different from the viscosity of water and it is difficult to mix water and the chemical solution uniformly, the water and the chemical solution can be mixed effectively by increasing the contact area.

  The chemical liquid that has flowed into the main channel 1 from the communication channel 3a through the junction 8a is mixed with water in the main channel 1, becomes a mixed fluid, flows downstream in the main channel 1, and reaches the junction 8b. At this time, the section of the merging portions 8a to 8b of the main channel 1 continuously changes so that the channel cross-sectional area is constant and the channel cross-sectional shape is changed from an elliptical shape to a circular shape again. ing. Therefore, the mixed fluid is agitated and mixed in the main channel 1 while suppressing the pressure loss caused by the shape change of the main channel 1. Moreover, since the main fluid and the subfluid can be mixed with the shape change of the main flow path 1, it is possible to prevent the components in the mixed fluid from adhering and depositing inside the main flow path.

  When the mixed fluid reaches the merging portion 8b, the chemical liquid branched from the sub flow path 2 flows into the main flow path 1, and the mixed fluid and the chemical liquid are mixed and flow through the main flow path 1 toward the merging section 8c. Also in the section of the merging portions 8b to 8c, since the main channel 1 has a constant channel cross-sectional area and its channel cross-sectional shape continuously changes, the mixed fluid is further stirred inside the main channel 1 The When the mixed fluid reaches the merging portions 8c and 8d, similarly to the merging portions 8a and 8b, the chemical liquid branched from the sub flow path 2 flows into the main flow path 1, and the mixed fluid and the chemical liquid are mixed. And flows out of the fluid mixer through the mixed fluid outlet 5. Since the main channel 1 also has a constant channel cross-sectional area and the channel cross-sectional shape continuously changes in the zone of the junctions 8c to 8d and the zone from the junction 8d to the mixed fluid outlet 5, The mixed fluid is further stirred inside the main channel 1.

  As described above, the sub-fluid can be divided into the main fluid and flowed into the main fluid in multiple stages, and the sub-fluid is mixed so that the main fluid and the sub-fluid are easily mixed in each stage. Since it can be made to flow in, the main fluid and subfluid which flowed into the fluid mixer can be mixed effectively. Moreover, since it can stir and mix whenever a subfluid flows into a main fluid, a main fluid and a subfluid can be mixed effectively. Therefore, it is suitable for the case where it is difficult to uniformly mix the main fluid and the subfluid where the viscosities of the main fluid and the subfluid are greatly different. Furthermore, the main fluid and the sub-fluid are mixed so that the viscosity of the main fluid and the viscosity of the sub-fluid are greatly different, and the high-viscosity fluid is mixed with a smaller amount of low-viscosity fluid than the high-viscosity fluid. It is particularly suitable when uniform mixing is more difficult.

-Second embodiment-
Hereinafter, the fluid mixer according to the second embodiment of the present invention will be described with reference to FIGS. The second embodiment is different from the first embodiment in that the main channel 1 has a spiral channel 22 and the sub-channel 2 is arranged inside the spiral shape of the spiral channel 22. . In addition, the same code | symbol is attached | subjected and demonstrated to the component similar to 1st embodiment.

  The fluid mixer according to the second embodiment includes a main channel 1, a sub channel 2, and a communication channel 3. The main channel 1 includes a main fluid inlet 4 into which main fluid flows, a first channel 21 connected to the main fluid inlet 4, a spiral channel 22 connected to the first channel 21, and a first channel connected to the spiral channel 22. It is formed by two flow paths 23 and a mixed fluid outlet 5 through which the mixed fluid flows out from the second flow path 23. In the second embodiment, the first flow path 21 and the second flow path 23 are both linear flow paths. The flow path axis of the first flow path 21 is disposed at a position spaced from the central axis of the outer diameter of the spiral flow path 22, and the flow path axis of the second flow path 23 is the same as the central axis of the outer diameter of the spiral flow path 22. It is arranged at almost the same position. In the second embodiment, the spiral flow path 22 has a constant flow path cross-sectional area, the flow path cross-sectional shape is a quadrangle, and is formed by continuously connecting a square and a rectangular flow path cross section.

  The secondary flow path 2 is a linear flow path having a secondary fluid inlet 6 into which the secondary fluid flows. The sub-channel 2 has a constant channel cross-sectional area, and the channel cross-sectional shape is circular. The flow channel axis of the sub flow channel 2 is disposed at substantially the same position as the central axis of the outer diameter of the spiral flow channel 22, and a part of the sub flow channel 2 is located inside the spiral shape of the spiral flow channel 22. Is arranged.

  The communication flow path 3 branches from the sub flow path 2 at branch portions 7 a to 7 d formed at equal intervals at different positions of the sub flow path 2, and merges with the main flow path 1 at the merge sections 8 a to 8 d. The channel cross-sectional area of the communication channel 3 is constant, the channel cross-sectional shape of the communication channel 3 is constant, the channel axis direction of the spiral channel 22 is short, and the flow of the spiral channel 22 is It is a rectangle having a long side in the direction orthogonal to the road axis direction.

  Next, the operation of the fluid mixer according to the second embodiment of the present invention will be described with reference to FIGS.

  In the second embodiment, the main fluid, which is water in the second embodiment, flows in the main flow path 1 from the main fluid inlet 4 and flows through the piping line located on the upstream side of the fluid mixer. Similarly, in the second embodiment, a secondary fluid, which is a chemical solution, flows through a piping line located upstream of the fluid mixer, and flows into the secondary flow path 2 from the secondary fluid inlet 6. When the chemical solution reaches the branching portion 7a from the auxiliary fluid inlet 6, the chemical solution is branched and flows into the communication channel 3a. When the chemical liquid flowing through the communication flow path 3a reaches the merging portion 8a, the chemical liquid flows into the main flow path 1 from the communication flow path 3a. Similarly, the chemical solutions that have reached the branch portions 7b to 7d are respectively branched and flow into the main flow path 1 through the communication flow paths 3b to 3d and the merge sections 8b to 8d.

The flow path cross-sectional shape of the merge part end portions 10a to 10d of the communication flow paths 3a to 3d is a rectangle, and the long side of the rectangle is substantially the same as the width of the main flow path 1 in the merge parts 8a to 8d. Therefore, the chemical solution can be made to flow almost simultaneously over a wide range in the direction orthogonal to the flow channel axis direction of the main flow channel 1, and as a result, the contact area between the water and the chemical solution at the junctions 8a to 8d can be increased. Water and chemicals can be mixed effectively. Further, the main channel 1 has a constant channel cross-sectional area in each of the sections between the confluence portions 8a to 8d adjacent to each other, and the channel cross-sectional shape continuously changes. The mixed fluid flowing in the channel 1 is agitated and mixed while suppressing a pressure loss accompanying a change in the cross-sectional shape of the channel.

  The main flow path 1 includes a main fluid inlet 4, a first flow path 21 connected to the main fluid inlet 4, a spiral flow path 22 connected to the first flow path 21, and a second flow path connected to the spiral flow path 21. 22 and the mixed fluid outlet connected to the second flow path, the sub flow path 2 is formed so as to be located inside the spiral shape of the spiral flow path 22, and the main flow path 1 and the sub flow path 2 are formed. Since they are communicated by the communication flow path 3, the fluid mixer can be formed compactly.

-Third embodiment-
Hereinafter, a fluid mixer according to a third embodiment of the present invention will be described with reference to FIG. The third embodiment is different from the second embodiment in that the fluid mixer is mainly composed of a main body 31 and a housing 32. In addition, the same code | symbol is attached | subjected and demonstrated to the component similar to 1st and 2nd embodiment.

  In the third embodiment, the main body 31 is made of, for example, polyvinyl chloride (hereinafter referred to as PVC). The main body 31 is formed in a columnar shape, here in a columnar shape. An annular groove 37 is provided on the outer peripheral surface of both ends of the main body 31 to which a water stop member 36 for maintaining the main body 31 and the housing 32 in a watertight state is mounted. A sub-fluid inlet 6 is formed on one end surface of the main body 31, and a sub-flow channel 2 connected to the sub-fluid inlet 6 is provided in the main body 31 coaxially with the central axis of the main body 31. . The sub fluid inlet 6 is provided with a female thread portion 33. The sub-channel 2 is formed from a bottomed hole having a circular channel cross-sectional shape and a constant channel cross-sectional area, and extends toward the other end surface. Elongated slit-shaped openings are formed at a plurality of positions at a plurality of positions in the sub-channel 2, and the openings serve as branch portions 7, and the communication channel 3 is connected to the sub-channel 2 at the branch portion 7.

  The main fluid inlet 4 is formed on one end surface of the main body 31, and the first flow path 21 connected to the main fluid inlet 4 is provided in the main body 31 at a position separated from the central axis of the main body 31. ing. The main fluid inlet 4 is provided with a female screw portion 34. Further, the first flow path 21 is an L-shaped flow path in which a part is formed parallel to the sub flow path 2 and the other part is formed perpendicular to the sub flow path 2. A mixed fluid outlet 5 is formed on the other end surface of the main body 31, and a second flow path 23 connected to the mixed fluid outlet 5 is provided inside the main body 31. The mixed fluid outlet 5 is provided with a female screw portion 40. In addition, the second channel 23 is an L-shaped channel that is formed partly coaxially with the channel axis of the sub-channel 2 and the other part is formed perpendicular to the channel axis of the sub-channel 2. is there.

  A spiral groove 35 is provided on the outer peripheral surface of the main body 31, one end of the spiral groove 35 is connected to the first flow path 21, and the other end is connected to the second flow path 23. The channel cross-sectional area of the spiral groove 35 is constant, the channel cross-sectional shape is a square shape, and is continuously deformed between a square and a rectangle. In addition, elongated slit-like openings are formed at a plurality of positions at a plurality of locations in the spiral groove 35, and the openings serve as a joining portion 8, and the communication flow path 3 is connected to the spiral groove 35 at the joining portion 8. The cross-sectional shape of the flow path of the spiral groove 35 is formed so as to be the shallowest and the widest at each merging portion 8. Then, as the spiral groove 35 approaches the other end surface of the main body portion 31 along the spiral groove 35 from the joining portion 8a, the depth and width of the spiral groove 35 become deeper, and further, on the other end surface of the main body portion 31. As it gets closer, the depth of the spiral groove 35 becomes shallower and wider, and when it reaches the merging portion 8b, it becomes the same shape as the merging portion 8a. The flow path cross-sectional shapes of the sections of the merge sections 8b to 8c and the sections of the merge sections 8c to 8d are also formed to be the same as the flow path cross-sectional shapes of the sections of the merge sections 8a to 8b.

  Further, on the outer peripheral surface of the main body 31, the junction 7 which is a slit-like opening formed on the bottom surface of the spiral groove 35 and the branch portion 7 which is a slit-like opening formed on the inner peripheral surface of the sub-channel 2. 8 are formed, and the communication holes serve as the communication flow path 3. The channel cross-sectional shape of the communication channel 3 is the same as the opening that forms the branching portion 7 and the merging portion 8, and the length of the opening in the longitudinal direction is substantially the same as the width of the spiral groove 35 in the merging portion 8. It has become. The communication channel 3 has a constant channel cross-sectional area, and each communication channel 3 has the same length and is provided at regular intervals. The communication channel 3 is provided perpendicular to the sub-channel 2.

  The housing 32 is made of PVC, for example, and is formed in a cylindrical shape. The inner diameter of the housing 32 is formed to be slightly larger than the outer diameter of the main body 31, and the length of the housing 32 is substantially the same as the length of the main body 31. Further, male screw portions 38 are formed on the outer peripheral surfaces of both ends of the housing 32. By fitting the main body 31 to the housing 32, the spiral flow path 22 is formed from the inner peripheral surface of the housing 32 and the spiral groove 35 of the main body 31.

  The cap nut 39 is made of PVC, for example, and is formed in a cylindrical shape. A female screw portion 42 that is screwed into the male screw portion 38 of the housing 32 is provided on the inner periphery of one end portion. The other end portion is provided with an inner collar portion 41 protruding in the inner circumferential direction. The main body 31 is fixed to the inside of the housing 32 by screwing the cap nut 39 into the housing 32 so that the inner flange portion 41 of the cap nut 39 contacts the end surface of the main body 31.

  Next, the operation of the fluid mixer according to the third embodiment of the present invention will be described with reference to FIG.

  In the third embodiment, the main fluid, which is water in the third embodiment, flows through the piping line located on the upstream side of the fluid mixer, and flows into the main flow path 1 from the main fluid inlet 4. Similarly, in the third embodiment, a secondary fluid, which is a chemical solution, flows through a piping line located upstream of the fluid mixer, and flows into the secondary flow path 2 from the secondary fluid inlet 6. When the chemical solution reaches the branching portion 7a from the auxiliary fluid inlet 6, the chemical solution is branched and flows into the communication channel 3a. When the chemical liquid flowing through the communication flow path 3a reaches the junction 8a, the chemical liquid flows into the main flow path 1 from the communication flow path 7a. Similarly, the chemical solutions that have reached the branch portions 7b to 7d are respectively branched and flow into the main flow path 1 through the communication flow paths 3b to 3d and the merge sections 8b to 8d.

  In the merging portions 8a to 8d, since the length in the longitudinal direction of the opening forming the merging portion 8 is substantially the same as the width of the spiral groove 35 in the merging portion 8, the contact area between water and the chemical solution is large. Therefore, water and chemicals can be mixed effectively. In particular, it is particularly suitable when the viscosity of water and the viscosity of the chemical solution are greatly different and it is difficult to uniformly mix water and the chemical solution.

  The chemical liquid that has flowed into the main channel 1 from the communication channel 3a through the junction 8a is mixed with water in the main channel 1, becomes a mixed fluid, flows downstream in the main channel 1, and reaches the junction 8b. At this time, since the flow channel cross-sectional shape of the main flow channel 1 is continuously changed in a state where the flow channel cross-sectional area is constant, the mixed fluid in the main flow channel 1 loses pressure due to the shape change of the main flow channel 1. It is possible to stir and mix while suppressing the above. In addition, since the water and the chemical liquid can be mixed with the change in the cross-sectional shape of the main flow path 1, it is possible to prevent components in the fluid from adhering to and accumulating inside the main flow path 1.

  When the mixed fluid reaches the merging portion 8b, the chemical liquid branched from the sub flow path 2 flows into the main flow path 1, and the mixed fluid and the chemical liquid are mixed and flow through the main flow path 1 toward the merging section 8c. Since the main channel 1 also has a constant channel cross-sectional area and the channel cross-sectional shape continuously changes in the sections of the merge portions 8b to 8c, the mixed fluid is further stirred inside the main channel 1 . When the mixed fluid reaches the merging portions 8c and 8d, similarly to the merging portions 8a and 8b, the chemical liquid branched from the sub flow path 2 flows into the main flow path 1, and the mixed fluid and the chemical liquid are mixed. And flows out of the fluid mixer through the mixed fluid outlet 5. Since the main flow channel 1 also has a constant flow channel cross-sectional area and the flow channel cross-sectional shape changes continuously in the sections of the merge sections 8c to 8d and the sections from the merge section 8d to the mixed fluid outlet 5, mixing is performed. The fluid is further stirred inside the main channel 1. As described above, the main fluid and the subfluid that have flowed into the fluid mixer can flow into the main fluid by dividing the subfluid into multiple stages inside the fluid mixer, and further the subfluid flows into the main fluid. Since stirring and mixing can be performed each time, the main fluid and the subfluid can be effectively mixed. In particular, it is particularly suitable when it is difficult to uniformly mix the main fluid and the subfluid where the viscosity of the main fluid and the viscosity of the subfluid are greatly different.

  Since the fluid mixer of the third embodiment includes the main body 31, the housing 32, and the cap nut 49, the number of parts is small, and disassembly and assembly are easy. The disassembled main body 31 is simple and intricate with a spiral groove 35 formed on the outer periphery and a sub-channel 2, a communication channel 3, a first channel 21, and a second channel 23 formed therein. Since the structure has few parts, cleaning can be performed easily and reliably. Further, since a part of the main flow path 1 is formed by the spiral flow path 22 formed concentrically with the sub flow path 2, the fluid mixer is compactly formed even if the length of the main flow path 1 is increased. can do.

  In the above-described embodiment, the sub-channel 2 has a constant cross-sectional area, but is not particularly limited. For example, the channel cross-sectional area may be reduced toward the downstream side. Similarly, in the above-described embodiment, the channel cross-sectional shape of the sub-channel 2 is constant, but is not particularly limited. For example, the flow path shape may be changed between the peripheral portion of the branching portion 7 and other portions.

  In the above-mentioned embodiment, although the space | interval between the communication flow paths 3 is constant, an interval may differ for every communication flow path 3, and it is not specifically limited. For example, when it becomes difficult to mix the sub-fluid into the main fluid as the amount of sub-fluid added increases, the interval between the communication channels 3 is increased as the number of additions increases. Also good. Further, in the above-described embodiment, the channel cross-sectional shape and the channel cross-sectional area of all the communication channels 3 are constant, but the channel cross-sectional shape and the channel cross-sectional area are different for each communication channel 3. There is no particular limitation. For example, when it is desired to adjust the flow rate of the sub-fluid for each communication channel 3, the channel cross-sectional shape and the channel cross-sectional area may be changed for each communication channel 3. Moreover, in the above-mentioned embodiment, although the length of the communication flow path 3 is constant, it is not specifically limited. In the above-described embodiment, the flow passage cross-sectional area and the flow passage cross-sectional shape of each communication flow path 3 are constant from the branching portion 7 to the merge portion 8. The shape and the cross-sectional area of the flow path may be changed, and are not particularly limited. For example, when it is desired to make the flow rate of the sub-fluid in the junction 8 faster than that in the branching section 7, the channel cross-sectional area of the communication channel 3 may be continuously reduced from the branching section 7 to the junction 8. In the above-described embodiment, the communication flow path 3 is connected to the main flow path 1 perpendicularly, but the communication flow path 3 may be connected to the main flow path 1 at any angle, and is not particularly limited.

  In the above-described embodiment, the channel cross-sectional area of the spiral channel 22 is constant, but the channel cross-sectional area may be changed and is not particularly limited. For example, when the mixing of the main fluid and the subfluid is desired to be accelerated, the mixed fluid can be agitated by changing the flow path cross-sectional area. Moreover, in the above-mentioned embodiment, although the flow-path cross-sectional shape of the spiral flow path 22 is a square shape and is changing continuously between a square and a rectangle, shapes other than a square and a rectangle may be sufficient and it is not specifically limited. For example, it is possible to further prevent the components in the mixed fluid from being deposited on the inner peripheral surface of the flow channel by making the cross-sectional shape of the flow channel semicircular. Moreover, in the above-mentioned embodiment, although the flow-path cross-sectional shape of the spiral flow path 22 is changing regularly, it is not necessary to provide regularity in the change of a flow-path cross-sectional shape, and it is not specifically limited. For example, when it becomes difficult for the secondary fluid to be mixed with the main fluid as the amount of the secondary fluid increases, the change in the cross-sectional shape of the flow path may be complicated as the number of times of addition increases. Moreover, in the above-mentioned embodiment, although the turning direction of the spiral flow path 22 is only one direction, you may reverse in the middle and it is not specifically limited. In the above-described embodiment, in order to increase the stirring effect in the spiral flow path 22, irregularities may be provided on the inner peripheral surface of the spiral flow path 22. Further, the first flow path 21 and the second flow path 22 connected to the spiral flow path 22 are both L-shaped flow paths, but any shape can be used as long as they are connected to the spiral flow path 22. It is not limited.

  In the third embodiment, the main fluid inlet 4, the subfluid inlet 6, and the mixed fluid outlet 5 are provided on the end face of the main body 31. However, the configuration is appropriately determined in consideration of the configuration of the piping around the fluid mixer. What is necessary is just to design and it does not specifically limit. For example, the main fluid inlet 4, the secondary fluid inlet 6, and the mixed fluid outlet 5 may be provided on the side surface of the fluid mixer. In the third embodiment, the main fluid inlet 4, the sub fluid inlet 6, and the mixed fluid outlet 5 are formed with female thread portions 33, 34, 40 for connecting pipes to the fluid mixer. The connection between the fluid mixer and the pipe is not particularly limited, and known connection means such as socket connection and flange connection can be used in addition to screw connection.

  In the description of the operation of the fluid mixer according to the above-described embodiment, the main fluid is water and the subfluid is a chemical solution. However, the main fluid and the subfluid may be fluids described later, and are not particularly limited.

-Fourth embodiment-
Hereinafter, a fluid mixer according to a fourth embodiment of the present invention will be described with reference to FIG. The fourth embodiment is different from the third embodiment in that the channel cross-sectional area of the main channel 1 is increased stepwise. In addition, the same code | symbol is attached | subjected to the component similar to 1st-3rd embodiment, and the difference with 3rd embodiment is mainly demonstrated below.

  A spiral groove 35 is provided on the outer peripheral surface of the main body 31, and the spiral flow path 22 is formed from the spiral groove 35 and the inner peripheral surface of the housing 32. The spiral flow path 22 is connected to the first flow path 21 and the second flow path 23, the first flow path 21, the spiral flow path 22 and the second flow path 23, the main fluid inlet 4 into which the main fluid flows, and the second flow path. The main flow path 1 is formed from the mixed fluid outlet 5 from which the mixed fluid flows out of the flow path 23. Here, the flow path cross-sectional area of the main flow path 1 is gradually increased for each merging portion 8, and the flow path cross-sectional areas of the merging portions 8 a to 8 d are on the upstream side closest to the merging portions 8 a to 8 d. It is formed so as to be substantially the same as the sum of the channel cross-sectional area of the spiral channel 22 and the channel cross-sectional areas of the branch end portions 10a to 10d of the communication channels 3a to 3d. In addition, the channel cross-sectional area of the first channel 21 is formed to be substantially the same as the channel cross-sectional area on the most upstream side of the spiral channel 22, and the channel cross-sectional area of the second channel 23 is the spiral channel. 22 is formed so as to be substantially the same as the cross-sectional area of the most downstream flow path.

  The operation of mixing the sub-fluid with the main fluid in the fluid mixer according to the fourth embodiment is the same as that of the third embodiment, and the description thereof is omitted. At this time, the fluid mixer of the fourth embodiment increases the cross-sectional area of the main channel 1 every time the sub-fluid flows into the main fluid, so that the sub-fluid can smoothly flow into the main fluid. .

  Next, an apparatus using the above-described fluid mixer will be described with reference to FIGS.

  FIG. 8 is a diagram showing an example of an apparatus using the fluid mixer according to the present invention. In FIG. 8, lines 51 and 52 through which two fluids respectively flow are connected to a main fluid inlet 57 and a sub fluid inlet 56 of a fluid mixer 53 according to the present invention, respectively. Each fluid is supplied by pumps 54 and 55, and each fluid mixed by the fluid mixer 53 flows out from the mixed fluid outlet 58. The fluid at this time may be any of gas, liquid, solid, powder and the like, and the solid and powder may be mixed with gas or liquid in advance. The fluid mixer 53 according to the present invention can be particularly preferably used for a fluid in which the viscosity of the main fluid and the viscosity of the sub-fluid are greatly different. It should be noted that two or more sub-channels 56 are formed in the fluid mixer 53, and the apparatus is configured to connect a line through which three or more fluids flow to the fluid mixer 53, and the three or more fluids are in the fluid mixer. 53 may be mixed.

  FIG. 9 is a diagram showing a modification of FIG. In FIG. 9, lines 61 and 62 through which two substances flow are respectively connected to the main fluid inlet 64 and the sub fluid inlet 65 of the fluid mixer 63 according to the present invention, and to the downstream side of the fluid mixer 63. And a line 67 through which other fluid flows are connected to a main fluid inlet 69 and a sub fluid inlet 68 of another fluid mixer 70 according to the present invention, respectively. As a result, when mixing fluids that are likely to cause mixing unevenness when three or more fluids are mixed at the same time, the two fluids that were first mixed are mixed uniformly, and then the other fluids are mixed and mixed uniformly. Thus, uniform mixing without uneven mixing can be performed efficiently.

  The combination of different fluids mixed by this apparatus will be further described. As a combination of different fluids mixed by this apparatus, for example, water as a main fluid and a pH adjuster, liquid fertilizer, bleach, disinfectant, surfactant or liquid chemical as a secondary fluid are allowed to flow. May be mixed by the fluid mixers 53, 63, and 70. Alternatively, the first liquid chemical may be flowed as the main fluid, and the second liquid chemical or metal may be flowed as the subfluid, and these may be mixed by the fluid mixers 53, 63, and 70. Alternatively, a waste liquid may be flowed as the main fluid, and a pH adjusting agent or a flocculant may be flowed as the auxiliary fluid, and these may be mixed by the fluid mixers 53, 63, and 70. Alternatively, the first resin may be flown as the main fluid, and the second resin, solvent, curing agent, or colorant may be flowed as the subfluid, and these may be mixed by the fluid mixers 53, 63, and 70. In addition, the first food raw material is flown as the main fluid, and the second food raw material, food additive, seasoning, incombustible gas, etc. are flowed as the secondary fluid, and these are mixed in the fluid mixers 53, 63, 70. May be.

  In the apparatus of FIG. 8 or FIG. 9, a heater or a vaporizer may be provided upstream of the fluid mixers 53, 63, 70, or a heat exchanger may be provided downstream of the fluid mixers 53, 63, 70. Good. Furthermore, a measuring instrument is arranged in a line through which one fluid flows before being connected to the fluid mixers 53, 63, 70, and the output of the pump of the line through which the other fluid flows is determined according to the parameter measured by the measuring instrument. You may provide the control part to adjust, you may provide a control valve which arrange | positions a control valve in the line through which the other fluid flows, and adjusts the opening degree of a control valve according to the parameter of a measuring device. At this time, the measuring device may be a flow meter, a flow meter, a concentration meter, or a pH measuring device as long as it can measure parameters of a necessary fluid. Further, when fluids that are easily separated from each other are mixed, a static mixer may be installed in the downstream line of the fluid mixers 53, 63, and 70 as necessary.

  The material of each component such as the main body 31, the casing 32, and the cap nut 49 of the fluid mixer according to the present invention may be PVC, polypropylene, polyethylene, or the like as long as it is made of resin. Particularly when a corrosive fluid is used as the fluid, it is preferably a fluororesin such as polytetrafluoroethylene, polyvinylidene fluoride, tetrafluoroethylene / perfluoroalkyl vinyl ether copolymer resin. A member or a part of the member that forms the main body 31 or the housing 32 may be formed of a transparent or translucent material. In this case, it is preferable because the state of fluid mixing can be visually confirmed. Further, depending on the substance to be passed through the fluid mixer, the material of each component may be a metal such as iron, copper, copper alloy, brass, aluminum, stainless steel, titanium, or an alloy thereof.

  In addition, you may comprise a fluid mixer by combining said 1st embodiment-4th embodiment arbitrarily. That is, as long as the features and functions of the present invention can be realized, the present invention is not limited to the fluid mixer of the above-described embodiment.

DESCRIPTION OF SYMBOLS 1 Main flow path 2 Sub flow path 3,3a, 3b, 3c, 3d Communication flow path 4 Main fluid inlet 5 Mixed fluid outlet 6 Subfluid inlet 7,7a, 7b, 7c, 7d Branch part 8,8a, 8b, 8c, 8d merge portion 9, 9a, 9b, 9c, 9d branch end portion 10, 10a, 10b, 10c, 10d merge portion end portion 21 first flow channel 22 spiral flow channel 23 second flow channel 31 main body portion 32 housing 33 female Screw part 34 Female thread part 35 Spiral groove 36 Water stop member 37 Annular groove 38 Male thread part 39 Cap nut 40 Female thread part 41 Inner flange part 42 Female thread part 51 Line 52 Line 53 Fluid mixer 54 Pump 55 Pump 56 Sub fluid Inlet 57 Main fluid inlet 58 Mixed fluid outlet 61 Line 62 Line 63 Fluid mixer 64 Main fluid inlet 65 Sub fluid inlet 66 Line 67 Line 68 Sub fluid inlet 69 Main flow Inlet 70 fluid mixer

Claims (7)

In a fluid mixer for mixing a plurality of fluids,
A main flow path having a main fluid inlet into which the main fluid flows and a mixed fluid outlet from which the mixed fluid flows out;
A secondary flow path having a secondary fluid inlet into which the secondary fluid flows;
A plurality of communication channels communicating the main channel and the sub channel;
Including
The cross-sectional shape of the end portion of the joining portion of the communication channel that merges with the main channel is longer in the direction perpendicular to the channel axis direction of the main channel than in the channel axis direction of the main channel Is formed long,
The channel cross-sectional shape of the main channel is changed,
Fluid mixer. The flow passage cross-sectional area of the main flow passage is enlarged stepwise downstream of at least one of the merge portions,
The fluid mixer according to claim 1. In the cross-sectional shape of the end of the merging portion of the communication channel, the length in the direction orthogonal to the channel axial direction of the main channel is substantially the same as the maximum length in the direction orthogonal to the channel axial direction of the main channel. It is characterized by being,
The fluid mixer according to claim 1 or 2. The main channel includes the main fluid inlet, a first channel connected to the main fluid inlet, a spiral channel connected to the first channel, a second channel connected to the spiral channel, and the first channel The mixed fluid outlet connected to two flow paths,
The sub-channel is formed to be located inside the spiral shape of the spiral channel,
The plurality of communication channels branch from different positions of the sub-channels, and are connected to the spiral channels at different positions of the spiral channels, respectively.
The fluid mixer according to any one of claims 1 to 3. A spiral groove is formed on the outer peripheral surface, and the first flow path connecting the main fluid inlet and the spiral groove and the second flow path connecting the mixed fluid outlet and the spiral groove are formed inside. A body portion in which the sub-flow path is formed and a communication hole connecting the sub-flow path and the spiral groove is formed;
A housing that fits with the outer peripheral surface of the main body,
Comprising
The spiral channel is formed by the spiral groove and the inner peripheral surface of the housing,
The communication hole is the communication channel,
The fluid mixer according to claim 4. In the main body, the main fluid inlet and the sub fluid inlet are formed on one end face, and the mixed fluid outlet is formed on the other end face.
The fluid mixer according to claim 5. A fluid mixer according to any one of claims 1 to 6, and a flow path forming means for forming a flow path for guiding a plurality of different fluids to the fluid mixer.
A device using a fluid mixer.