JPH10216495A - Static fluid mixer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent mixing failure and simplify working and assembling by integrally forming a group of small chambers from both the surfaces of a base body of a mixing element body of a mixing element having a split grooved seal bearing surface for attaching a seal member for preventing a short-circuit flow between it and a casing on the peripheral edge side of the rear of a disc to prevent the short-circuit flow in the element body. SOLUTION: Fluid is caused to flow by pressure from an inlet 2 in an inner space of a casing 4, and when it reaches the inside of a mixing element 10 from a flow hole of a mixing element 5 on the upstream side, it changes its direction by a base body, and through small chambers communicating with each other and in the radial direction outward from the central part, it is repeatedly subjected to right angle impingement, dispersion, confluence, meandering, vortex, shearing, pulverizing and the like to complicatedly flow and it enters the group of the small chambers from a flow path of the inner peripheral surface of the casing 4 and is concentrated while flowing, and again it enters a mixing element 5 on the downstream side from a flow hole, and while through each small chamber, it is again subjected to the same flow outward from the central part, it is discharged from and outlet 3. As a result, working is simplified and cost is lowered and seal failure and mixing failure are prevented to perform uniform mixing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stationary fluid mixing device.

[0002]

2. Description of the Related Art Conventionally, there has been known a stationary mixing device having no mechanically movable portion, as disclosed in Japanese Patent Publication No. 59-39173. Such a mixing device has a cylindrical shape having an inlet and an outlet at both ends. And a plurality of flow guide units formed by concentrically superimposing two large and small disks in which a large number of polygonal small chambers each having an open front face are arranged in a honeycomb shape on surfaces facing each other. The large disk has a diameter matching the inner diameter of the casing, and a circulation hole is formed in the center, and the large-diameter disk and the small-diameter disk communicate with other small chambers in which the small chambers face each other. The plurality of flow guide units are arranged in a casing in such a manner that discs having the same diameter are adjacent to each other and arranged in the casing, and the size of the flow guide units is large on both sides. A circular disk and place its circulation hole in the inlet of the casing. And communicates with the fine outlet.

[0003] When the fluid to be mixed is pressurized and flows into the internal space of the casing from the inlet, the fluid reaches the inside from the flow hole of the upstream flow guiding unit, and the straight path is obstructed by the small diameter disk. The fluid flowing radially from the central portion to the outside through the small chambers communicating with each other and further reaching the inner peripheral surface of the casing after passing through the upstream flow guiding unit is moved inside the casing. From the flow path formed by the peripheral surface and the small diameter disk, enter each small chamber of the downstream flow guiding unit, flow into the central part, again enter the downstream flow guiding unit from the flow hole, and After passing through the small chambers again, the inside of the flow guiding unit flows sequentially from the center to the outside, and is finally discharged from the outlet.

However, since the sealing function is provided so that the outer diameter of the large-diameter disk is brought into close contact with the inner diameter of the casing, the processing accuracy of the inner diameter of the casing and the processing of the outer diameter of the large-diameter disk are provided. The precision must be precise, and in particular, the casing requires a length for arranging a plurality of flow guide units, so that it becomes difficult to precisely process the inner diameter over the entire length of the casing, and The outer diameter of the large-diameter disk is merely in close contact with the inner diameter of the casing. Therefore, when the supply pressure of the fluid increases, the inner diameter of the large-diameter disk increases due to distortion of the casing. If a slight gap occurs even partially between the outer diameter of the casing and the inner diameter of the casing, the fluid flows along the entire length of the inner peripheral surface of the casing from this gap and flows to the outlet side in a short-circuit without receiving the mixing action. , The original average Mixing capacity has the disadvantage to decrease.

[0005] In addition, the flow guiding unit is configured such that two large and small disks are overlapped by bringing the end faces on the opening side of the small chamber into contact with each other, and a plurality of flow guiding units are arranged in an overlapping manner. However, the close contact between the end faces is not good, and a slight gap is generated. Fluid flows through this gap to the outlet side in a short-circuited manner without receiving the mixing action. have.

In addition, the processing accuracy of the end face of the small chamber (surface irregularity, flatness, etc.) and the processing accuracy of the rear surface of each disk abutting (surface unevenness, flatness, etc.) are precisely processed to obtain the end face. It is possible to eliminate the above-mentioned disadvantages by establishing a good close contact state with each other, but as the processing accuracy becomes more precise, the cost increases significantly, and there is a limit to the precision of the processing accuracy. In order to arrange a plurality of flow guide units, processing tolerances when processing accurately are inevitably accumulated, and it is a reality that a small gap is generated at a close place on the end face of the small chamber, and the above drawbacks There is a demand for a simple and inexpensive means of preventing the above.

[0007]

SUMMARY OF THE INVENTION The present invention relates to a stationary fluid mixing device which reliably prevents a mixing defect due to a short-circuit flow during fluid mixing, and simplifies processing and assembly to reduce cost. Is to be provided.

[0008]

SUMMARY OF THE INVENTION In view of the difficulties in precision machining based on the prior art described above and problems such as poor mixing due to short-circuit flow, the present invention has a method of forming a half of a mixing element on the rear edge of the rear surface of a disk. Form a split groove-shaped seal seat surface, attach a seal member to the seal groove formed by the seal seat surface, eliminate short-circuit flow between the casing and the mixing element,
Further, the mixing element body of the mixing element provided in the casing integrally forms the first mixing chamber group and the second mixing chamber group in which the chambers are arranged from both sides of the base, eliminating short-circuit flow in the mixing element, and A static type fluid mixing device that has a feature that a side seal element body made of an elastic body covering an end opening portion of a second mixing small chamber group of a mixing element body is provided to eliminate short-circuit flow in the mixing element. The above-mentioned drawbacks are provided to eliminate the above drawbacks.

The stationary fluid mixing device comprises a cylindrical casing, a lid forming an inlet and an outlet, and a desired number of mixing elements arranged in the casing.
The lid is detachable at both ends of the casing.

[0010] The mixing element is constituted by providing side sealing element bodies on opposing inner surfaces of the discs on both sides, providing the mixing element body between the side sealing element bodies, and concentrically overlapping these.

The disc of the mixing element is formed with an outer diameter inserted loosely into the casing, has a flow hole in the center, and has a half-slotted groove on the outer peripheral side of the outer surface of the disc. A seal seat surface is formed.

Further, the mixing element body is a first mixing small chamber group in which a large number of cylindrical small chambers open frontward from both sides of a base having an outer diameter large enough to form a flow passage on the inner peripheral surface side of the casing. Are integrally formed, and a second mixing small chamber group in which a number of cylindrical small chambers similar to the above are arranged integrally from the distal end surface of the first mixing small chamber group is integrally formed. The small rooms in the small room group are arranged in different positions so that each small room communicates with the other small room facing the small room.

Further, the side seal element body is formed of an elastic body having a size to cover the opening at the end face of the mixing element body, has a through hole in the center, and is formed by the seal seat surface and the lid of the mixing element. A ring-shaped seal member is provided in the formed seal groove, and is held by lids at both ends of the casing so as to elastically deform the side seal element body.

Further, the seal seat surface, which is the bottom of the seal groove, may be tapered, or the shape of the side seal element may be changed to a mesh sheet so as to leave a portion in contact with the end face of the mixing element. In addition, a fitting groove into which the distal end side of the mixing element is fitted is formed in the side seal element.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. A static fluid mixing apparatus 1 according to the present invention is desirably provided in a cylindrical casing 4 having an inlet 2 and an outlet 3. A number of mixing elements 5 are provided internally.

The casing 4 has outwardly projecting flanges 6 and 6a formed in the openings at both ends, respectively.
Lids 7 and 7a having an inlet 2 and an outlet 3 smaller than the inner diameter of the casing 4 formed at the center are detachably mounted on the end face of the casing 6a.

First, as the mixing element 5, FIGS.
As shown in FIG. 6, side sealing element bodies 9 and 9a are provided on opposed inner surfaces of disks 8 and 8a provided on both sides, and a mixing element body 10 is provided between the side sealing element bodies 9 and 9a. 8, 8a, the side seal element bodies 9, 9a, and the mixing element body 10 are concentrically overlapped.

The disks 8 and 8a are of a size that does not make close contact with the inner peripheral surface of the casing 4, that is, have a plate-like shape with an outer diameter of a loose fit having a clearance designed for a sealing device with respect to the sealing member 34. A flat truncated cone-shaped pedestal portion 11 having a base diameter slightly smaller than the outer diameter is integrally formed on one outer surface, and the circumference of the disks 8, 8a outside the pedestal portion 11 is formed. The edge side is depressed to form a seal seat surface 12.

The seal seating surface 12 is formed in a half-split groove shape to form a seal groove 33 in which a seal member 34 is mounted.
Further, a part thereof is formed by a region formed in a tapered surface shape, and the portion formed in the tapered surface shape is a bottom portion of the seal groove 33 where the seal member 34 is pressed and contacted.

Further, as another embodiment of the seal seat surface 12, the pedestal portion 11 is formed in a flat cylindrical shape, and the pedestal portion 11 is formed.
May be formed in the shape of a half groove in a region which is depressed by the outer peripheral surface of the disk and the outer peripheral surface of the disks 8 and 8a.

A flow hole 13 is formed at the center of the discs 8 and 8a, and a hub 15 is integrally formed at the center of the flow hole 13 at the tip of an arm 14 directed from the inner surface of the flow hole 13 to the center. A shaft hole 16 is formed in the center of the hub 15, and a counterbore 18 formed in a concave shape at a predetermined depth in the pedestal 11 around the flow hole 13.
Is formed.

The side seal element bodies 9 and 9a are mixed element bodies.
10 to abut against the end face, and to cover and close such a contact point so as to be substantially fluid-tight (sealing of the flow of gas or liquid fluid). Expanded graphite sheet with rubber-like elasticity, which is the material of the body, elastomer, etc. (nitrile rubber, silicone rubber,
Fluoro rubber, acrylic rubber, thermoplastic elastomer, etc.)
And a through hole 18 is formed at the center thereof and communicates with the flow hole 13 of the disks 8, 8a.

The outer diameter of the side seal element bodies 9 and 9a is naturally large enough to be inserted into the casing 4, and is formed so as to cover the end face of the mixing element body 10 and to be closed. Side seal elements 9, 9a are provided in close contact with the inner surfaces of the discs 8, 8a.

Further, the discs 8, 8a and the side seal elements 9, 9a are used as position shift restricting means so as to prevent mutual displacement between the disks 8, 8a and the side seal element bodies 9, 9a. An appropriate number of protrusions (not shown) or an appropriate number of annular ridges 19 are provided on one of the surfaces, and a recess (not shown) into which the projection or the ridge 19 fits or an annular engagement. A groove 20 is provided.

The mixing element body 10 is separated from the inner peripheral surface of the casing 4 and has a flow passage on the inner peripheral surface side between the inner peripheral surface and the inner peripheral surface.
Substrate 22 formed in a plate shape by a material that does not compressively deform in its thickness direction, such as a metal having a diameter outside the size of forming the same, synthetic resin, etc. A first mixed small chamber group 24 in which a large number of cylindrical small chambers 23, 23a... Are arranged is formed integrally, and a cylindrical small chamber similar to the above is formed from the front end surface of the side wall 25 of the first mixed small chamber group 24.
The second mixing small chamber group 26 in which a large number of 23, 23a... Are arranged is integrally formed, and the small chambers 23, 23a of the second mixing small chamber group 26 and the small chambers 23, 23a. Small rooms 23, 23 of each other
are arranged at different positions so as to communicate with a plurality of other small chambers 23, 23a, which are opposed to each other, and a mixing small chamber group 27 is provided, and a small screw through hole 28 is formed in the center.

In place of the small screw through hole 28, a female screw hole (not shown) which does not penetrate the base 22 may be formed at the center of both sides of the base 22, and the base 22 of the above embodiment is formed as one. Alternatively, the base 22 may be divided into two pieces at the center.

In the above embodiment, the small chambers 23, 23a
.. Are shown in hexagons and arranged in a large number in a honeycomb shape. However, the shape is not limited to such a shape.
9, the shape of the small chambers 23, 23a... In plan view may be triangular, square, octagonal, etc., or may be circular (not shown).

The two discs 8, 8a are arranged on both sides such that the side seal elements 9, 9a face each other, and the mixing element 10 is arranged between the discs 8, 8a. The shaft holes 16 of the discs 8 and 8a and the through holes of the side seal elements 9 and 9a
18 and the screw through hole 28 of the mixing element body 10 are positioned concentrically, and the screw 29 is penetrated through the holes 16, 18, and 28 and fastened by the nut member 30 to fix the side seal element bodies 9, 9a.
Is applied to the side seal element bodies 9 and 9a by the pressing force, and the elastic restoring force at that time substantially closes the opening of the end face of the mixing element body 10 in a fluid-tight manner. To form a mixing element 5.

Between the screw 29, the shaft hole 16, and the small screw through hole 28, an appropriate sealing means (not shown) is provided if necessary in order to prevent fluid leakage. In the case of a female screw hole that does not pass through, the nut member 30 becomes unnecessary.

In the center of the end surfaces of the lids 7 and 7a, cylindrical projections 31 inserted loosely into openings at both ends of the casing 4 are provided.
And a seal seating surface 12 similar to the disks 8 and 8a is formed on the periphery of the tip of the cylindrical projection 31.

The cylindrical projection 31 may be provided as needed, and is not limited to being integrally formed. The column projection 31 may be formed separately and connected to the lids 7 and 7a.

The mixing elements 5 are superposed so that the pedestals 11 of the disks 8, 8a are adjacent to each other, and are arranged in series in the hollow interior of the casing 4. And the inlets 2 and the outlets 3 of the lids 7 and 7a are communicated with each other.
Is inserted, cover bodies 7 and 7a are connected to appropriate number of connecting bolts 3
2, 32a, a substantially V-shaped and substantially U-shaped seal groove 33 is formed by the seal seating surface 12 formed on the disk 8, 8a of the adjacent mixing element 5.

A ring-shaped seal member 34 for obtaining a predetermined squeeze margin by the seal groove 33 and the inner peripheral surface of the casing 4 is mounted in the seal groove 33.

Here, as a method of mounting the seal member 34, first, the lid 7 is mounted to one opening of the casing 4 with an appropriate number of connection bolts 32, 32a, and then the seal member 34 and the mixing element 5 are mounted. Are arranged in series in this order, and finally the lid 7a is placed in the other opening of the casing 4,
When mounted with an appropriate number of connecting bolts 32, 32a, the seal member 34 is mounted in the seal groove 33 formed by the adjacent seal seat surface 12, and the desired number of mixed Since the element 5 can be clamped and fixed, a pressing force can be further applied to the side seal element bodies 9 and 9a constituting the mixing element 5, so that the sealing function by the elastic restoring force is improved.

When the plate-like lids 7 and 7a without the cylindrical projection 31 are used, the seal seating surface 12 and the lid 7 of the mixing element 5 arranged at both ends of the casing 4 are used.
A substantially V-shaped and substantially U-shaped seal groove 33 is formed by the inner surface of 7a.

The shape of the seal member 34 includes an O-ring, an X-ring, and a D-ring. The material of the seal member 34 is the same as that of the side seal elements 9 and 9a. And the casing 4, the lid 7,
a, the material of the discs 8 and 8a has mechanical strength that does not substantially deform in the thickness direction or the axial direction according to the mixing pressure, the type of fluid, the fastening force of the lids 7 and 7a, and the like. Metals and synthetic resins are appropriately selected in design.

In the drawings, 35 and 35a are bolt through holes formed in the flanges 6 and 6a of the casing 4, and 36 is an adjustment bolt 37 provided at a position facing the flanges 6 and 6a in the lids 7 and 7a. It is a through screw hole.

Further, as shown in FIG. 10, the outer diameter of the base 22 of the mixing element body 10 is brought close to the inner peripheral surface of the casing 4,
When formed in such a size as to be in contact with each other, in order to obtain a desired flow rate, through holes of an appropriate shape and number are formed at positions outside the locations where the small chambers 23, 23a.
38, and the through hole 38 is formed in the flow passage 21 in the above-described embodiment.
May be achieved.

As another embodiment of the side seal element bodies 9 and 9a of the above embodiment, as shown in FIGS. 11 and 12, the small chambers 23 of the second mixing small chamber group 26 of the mixing element body 10 are provided.
23a.. May be formed into a mesh sheet so as to leave a portion substantially in contact with the leading end surface of the side seal element bodies 9 and 9a. Further, the side seal element bodies 9 and 9a may be formed.
Can be directly fixed to the front end surfaces of the small chambers 23, 23a,... Of the second mixing small chamber group 26.

The width W1 of the side wall 25a of the small chambers 23, 23a... Of the second mixing small chamber group 26 of the mixing element body 10 and the line width W2 of the mesh sheet side seal element bodies 9, 9a are represented by the width W
1 = line width W2, width W1 <line width W2, width W1> line width W2 and the like can be set as appropriate, that is, the side seal element bodies 9 and 9a abut on the front end surface of the second mixed small chamber group 26. It is sufficient that each side surface 39 of each opening of the side seal element bodies 9 and 9a is exposed and comes into contact with the fluid.

In the above embodiment, the side seal elements 9, 9a are formed in a mesh sheet shape and provided in a convex shape. However, as shown in FIG. 13, the plate-shaped side seal elements 9, 9a are provided.
May be provided in a concave shape on the surface of the second mixing small chamber group 26 so that the tip end sides of the small chambers 23, 23a.

Further, the mixing element 5 can be formed by appropriately combining the side seal element bodies 9 and 9a shown in the various embodiments.

Next, the mixing action of the static fluid mixing apparatus according to the present invention will be described. The basic mixing action is as follows. The fluid is pressurized from the inlet 2 of the static fluid mixing apparatus 1 to the internal space of the casing 4. When the fluid flows, the flow of the fluid reaches the inside of the mixing element body 10 from the flow hole 13 in the upstream mixing element 5 as shown by an arrow in FIG. 2, for example. In other words, the air flows in a complicated manner from the central portion to the outside through the communicating small chambers 23, 23a,.

As described above, the fluid that has reached the inner peripheral surface of the casing 4 after passing through the one mixing small chamber group 27 of the mixing element body 10 in the mixing element 5 on the upstream side is
The small chambers 23, 23 of the other mixing small chamber group 27 of the mixing element body 10 in the mixing element 5 from the flow passage 21 formed on the inner peripheral side of
a… and enter right angle collision, dispersion, confluence, meandering,
Collected at the center by a complicated flow such as eddy current
From the mixing element 5 on the downstream side, and again through each of the small chambers 23, 23a... From the center to the outside, at right angles, dispersed, confluent, meandering, vortex, etc. And discharged from the outlet 3.

As described above, the fluid is subjected to a right angle impact on the disks 8, 8a, the side seal elements 9, 9a, and the base 22, and
23, 23a… at right angles to the side walls 25, 25a, each compartment 23, 23
dispersion from a… to the other plurality of chambers 23, 23a…, merging from the plurality of chambers 23, 23a… to another one of the chambers 23, 23a…
Meandering, and a plurality of small chambers 23, 23a ... to each small chamber 23, 23a
Shear due to eddy currents caused by inflow into ... each chamber
Hydrodynamic shearing when passing through an orifice, which is a communication path from 23, 23a ... to other small chambers 23, 23a ..., pulverization by impact destruction, shearing when passing through end faces of small chambers 23, 23a ... The fluid is dispersed and mixed by mechanical cavitation or the like.

The mixing element 5 is sandwiched and fixed between the lids 7 and 7a, so that the distal end surfaces of the small chambers 23, 23a... Of the second mixing small chamber group 26 in the mixing element body 10 and the side seal element bodies 9, 9a. Are in close contact, and the side seal elements 9, 9a are elastically deformed to have a sealing function. At the time of fluid mixing, fluid pressure also acts on the side seal elements 9, 9a. An elastic restoring force corresponding to the fluid pressure is applied, and the sealing force at the close contact between the small chambers 23, 23a... Of the second mixing small chamber group 26 and the side sealing element bodies 9, 9a increases.

In particular, when the mesh sheet-shaped side seal element bodies 9 and 9a are used, each side surface 39 of each opening of the side seal element bodies 9 and 9a is exposed and comes into contact with the fluid. During fluid mixing, the fluid pressure is
Acting also on 39, an elastic restoring force corresponding to this fluid pressure is applied, and the sealing force between the tip end surfaces of the small chambers 23, 23a... As the fluid increases, the fluid flowing into the small chambers 23, 23a... Collides with the base 22 and the discs 8, 8a formed of a material that does not compressively deform in the thickness direction. Since the absorption amount is small, the collision energy effectively acts on the mixing action.

When the side seal element bodies 9 and 9a having the fitting grooves 40 are used, the fitting grooves 40 have the tips of the small chambers 23, 23a of the second mixing chamber group 26 in the mixing element body 10. Since the surface side fits in, the misalignment of the mixing element body 10 is restricted, and the side seal element bodies 9 and 9a
The fluid pressure also acts on the side walls 25 of the small chambers 23, 23a,... Of the second mixing small chamber group 26 by applying an elastic restoring force corresponding to the fluid pressure.
The sealing force at the close contact point between the front end surface of the fitting groove 40 and the bottom surface 40a of the fitting groove 40 increases, and the side surface 40b of the fitting groove 40 also elastically deforms according to the fluid pressure. 26 small rooms
23, 23a... Are closely attached to the side walls 25a, and a sealing function is also added to such close places.

Further, since the seal groove 33 is formed by the seal seat surface 12 and the seal seat surface 12 adjacent to each other and the lids 7 and 7a, the seal member 34 and the mixing element 5 are simply inserted into the casing 4 in order. A seal member 34 can be mounted in the seal groove 33, and the seal member 34 can be sealed to restrict a short-circuit flow of fluid from between the outer diameters of the disks 8, 8a and the inner peripheral surface of the casing 4. When the seal seat surface 12 is formed into a tapered surface shape, the tapered surface serves as a guide surface when the seal member 34 is mounted, as shown in FIG.

[0050] Fluid leaking from between the end faces of the cylindrical projections 31 of the lids 7 and 7a and the rear faces of the disks 8 and 8a of the mixing element 5 is also in contact with the seal seating surface 12 of the cylindrical projections 31 and the circle. Seal groove 33 formed by the seal seat surface 12 of the plates 8, 8a
Since the seal member 34 is mounted inside, the leakage from the outer periphery of the cylindrical projection 31 to the outside can be prevented, and gaskets generally provided on the outer peripheral side of the cylindrical projection 31 become unnecessary.

[0051]

In short, according to the present invention, a desired number of mixing elements 5 are arranged in a cylindrical casing 4 and lids 7 and 7a forming inlets 2 and outlets 3 at both ends of the casing 4 are detachable. The mixing element 5 has side seal elements 9, 9a on opposite inner surfaces of the disks 8, 8a on both sides.
And a mixing element body between the side seal element bodies 9 and 9a.
10 are provided, these are concentrically overlapped, and the discs 8 and 8a are formed with an outer diameter that is loosely inserted into the casing 4 and form a flow hole 13 at the center, A seal seating surface 12 formed in a half groove shape is formed on the outer peripheral side of the disks 8 and 8a, and the mixing element body 10 has a size such that a flow passage 21 is formed on the inner peripheral side of the casing 4. Substrate with outer diameter
A first mixing chamber group 24 in which a large number of cylindrical chambers 23, 23a... Open frontward from both sides of 22 are integrally formed, and a cylindrical chamber similar to the above is formed from the front end surface of the first mixing chamber group 24. twenty three,
The second mixing small chamber group 26 in which a large number of 23a ... are arranged is integrally formed, and the small chambers 23, 23a ... of the second mixing small chamber group 26 and the small chambers 23, 23a ... of the first mixing small chamber group 24 are mutually small chambers. 23, 23a ... are arranged in different positions so as to communicate with the other small chambers 23, 23a ... facing each other, and the side seal elements 9, 9a are elastic enough to cover the opening at the end face of the mixing element 10. A ring-shaped sealing member 34 is provided in a sealing groove 33 formed by the sealing seat surface 12 of the mixing element 5 and the lids 7 and 7a. Since the sealing element bodies 9 and 9a are sandwiched between the lids 7 and 7a at both ends of the casing 4 so as to be elastically deformed, the first mixed small chamber group 24 and the second mixed small chamber group 26 are integrally formed. Chambers 23, 23a in the mixing device ...
The short-circuit flow from the gap between the end faces is eliminated, and the front end face of the second mixing chamber group 26 is in close contact with the side seal element bodies 9 and 9a, and the lid bodies 7 and 7a are attached to the side seal element bodies 9 and 9a. Because the elastic restoring force is always provided by both the holding force and the fluid pressure, the distal opening side of the second mixing chamber group 26 is reliably closed so as to be fluid-tight, and no leakage from such a portion occurs. Therefore, the mixing failure due to the short-circuit flow is prevented and the uniform mixing is enabled.

Further, the mixing element body 10 is clamped and fixed by the side seal element bodies 9 and 9a, and the disks 8, 8a are supported by the side seal element bodies 9 and 9a and the sealing member 34. 10. The machining accuracy of the end faces of the discs 8 and 8a does not require any precision machining, so that the machining cost can be reduced and the fluid passes through the mixing element 5 while flowing in a complicated manner. Even if the mixing element 5 vibrates due to the pulsation generated by the pump or the pump itself, the seal member 34 and the side seal element bodies 9 and 9a function as a cushioning material against such vibration, and absorb or dampen the vibration. , It is possible to prevent adverse effects on peripheral devices and structures.

Further, the seal groove 33 can be formed and the seal member 34 can be mounted in the seal groove 33 by simply inserting the seal member 34 and the mixing element 5 sequentially into the casing 4 and disposing them. Is extremely simple, and the seal member 34 is securely mounted in the seal groove 33. Therefore, short-circuit flow of the fluid from the outer peripheral side of the discs 8 and 8a is restricted, thereby causing a defect such as poor mixing. In addition, since the outer diameters of the disks 8 and 8a do not closely contact the inner peripheral surface of the casing 4, there is no need to precisely process the inner peripheral surface of the casing 4 in which a plurality of mixing elements 5 are arranged. In addition, machining of the casing 4 itself becomes simple.

Further, since the seal seat surface 12 which is the bottom of the seal groove 33 is formed in a tapered shape, the tapered surface serves as a guide surface when the seal member 34 is mounted, so that it is difficult to visually confirm the casing. Insufficient sealing due to biting of the seal member 34 in the inside 4 can be prevented.

The shape of the side seal element bodies 9 and 9a is changed to the small chambers 23 and 23a of the second mixing small chamber group 26 of the mixing element body 10.
Is formed into a mesh sheet so as to leave a portion in contact with the front end surface of the seal member, so that the side seal element members 9 and 9a are subjected to elastic deformation force due to the clamping force between the lid members 7 and 7a, and also when fluid is mixed. In the above, since the fluid pressure is applied to each side surface 39 of each opening of the mesh sheet-shaped side seal element bodies 9 and 9a, an elastic deformation force is further applied, so that the side seal element bodies 9 and 9a And mixed element body 10
The close contact force at the tip end surface of the second mixing small chamber group 26 is increased, and the sealing function is improved, so that poor mixing due to short-circuit flow is prevented and uniform mixing is enabled.

Further, since the fitting grooves 40 are formed in the side seal element bodies 9 and 9a, into which the tip surfaces of the small chambers 23, 23a... Of the second mixing small chamber group 26 of the mixing element body 10 are formed. Since the side seal element bodies 9 and 9a are integrated by the fitting action between the 40 and the front end faces of the small chambers 23 and 23a of the second mixing small chamber group 26, displacement is regulated. The closed state of the opening of the opening 10 is always maintained to be fluid-tight, mixing failure due to leakage can be prevented, and fluid pressure acts on the side seal element bodies 9 and 9a, and elastic recovery according to this fluid pressure A force is applied to increase the sealing force between the distal end surface of the side wall 25a of the second mixing chamber group 26 and the bottom surface 40a of the fitting groove 40, and the side surface 40b of the fitting groove 40 also changes in accordance with the fluid pressure. The side wall 40b is elastically deformed, and the side surface 40b is in close contact with the side wall 25a of the second mixing chamber group 26, and a sealing function is provided at such a close portion. Is added, and the sealing area is expanded in this way, so that further improvement in the sealing property can be expected, and the uniformity of mixing can be further improved.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of a stationary fluid mixing device according to the present invention.

FIG. 2 is a partially enlarged schematic cross-sectional view of the same static fluid mixing device.

FIG. 3 is a perspective view of a mixing element.

FIG. 4 is an exploded perspective view of the mixing element.

FIG. 5 is a diagram showing a communication arrangement state of each small chamber in the mixing element body.

FIG. 6 is a sectional view of FIG. 5;

FIG. 7 is a view showing a communication arrangement state in which the shape of each small chamber in the mixing element body is triangular.

FIG. 8 is a diagram showing a communication arrangement state in which the shape of each small chamber in the mixing element body is square.

FIG. 9 is a diagram showing a communication arrangement state in which the shape of each small chamber in the mixing element body is octagonal.

FIG. 10 is a partially enlarged schematic cross-sectional view of a stationary fluid mixing device showing an embodiment in which a through hole is provided in a base of a mixing element body.

FIG. 11 is a perspective view showing another embodiment of the side seal element body.

FIG. 12 is a partially enlarged schematic cross-sectional view of a stationary fluid mixing device showing an embodiment using the same side seal element body.

FIG. 13 is a partially enlarged schematic cross-sectional view of a stationary fluid mixing device using another embodiment of the side seal element body.

FIG. 14 is a partially enlarged cross-sectional view showing a state in which a side seal element body abuts against a front end surface of a side wall of a second mixing small chamber group and is in a compression deformation state.

FIG. 15 is a partially enlarged cross-sectional view showing a state in which a mesh-shaped side seal element body abuts against a front end surface of a side wall of a second mixing chamber group and is in a compression deformation state.

FIG. 16 is a partially enlarged cross-sectional view showing a state in which a side seal element body provided with a fitting groove is in contact with a front end surface of a side wall of a second mixing chamber group and in a state of compressive deformation.

FIG. 17 is a partially enlarged cross-sectional view showing a state where a seal member is mounted in a seal groove formed of a tapered surface.

[Explanation of symbols]

 2 Inlet 3 Outlet 4 Casing 5 Mixing element 7, 7a Lid 8, 8a Disk 9, 9a Side seal element 10 Mixing element 12 Seal seat 13 Flow hole 18 Through hole 21 Flow path 23, 23a ... Small chamber 24th One mixed small chamber group 25 Second mixed small chamber group 33 Seal groove 34 Seal member 40 Fitting groove

Claims (4)

[Claims] 1. A desired number of mixing elements are arranged in a cylindrical casing, and lids forming inlets and outlets are detachably provided at both ends of the casing, and the mixing elements are opposed to both sides of a disk. A side seal element body is provided on the inner surface, a mixing element body is provided between the side seal element bodies, and these are concentrically overlapped with each other. The outer diameter of the disk is loosely inserted into the casing. Formed by
A flow hole is formed in the center, a seal seat surface in the form of a half groove is formed on the peripheral edge of the outer surface of the disk, and the mixing element body has a flow passage formed on the inner peripheral surface of the casing. A first mixed small chamber group in which a large number of cylindrical small chambers open frontward are arranged from both sides of a substrate having an outer diameter of about 1 mm, and a cylindrical small chamber similar to the above is further formed from the distal end surface of the first mixed small chamber group. Are formed integrally, and the small chambers of the second mixed small chamber group and the small chambers of the first mixed small chamber group are positioned so that each of the small chambers communicates with another opposed small chamber. The side seal element body is formed by an elastic body having a size to cover the opening at the end face of the mixing element body, and a through hole is formed in the center, and the side seal element body is formed by the seal seat surface and the lid body of the mixing element. Provide a ring-shaped seal member in the formed seal groove Together, side seal element body so as to elastically deform, static fluid mixer being characterized in that pinched by the lid body of the casing ends. 2. The static fluid mixing device according to claim 1, wherein the seal seat surface, which is the bottom of the seal groove, has a tapered shape. 3. The static fluid mixing according to claim 1, wherein the side seal element body is formed in a mesh sheet shape so as to leave a portion in contact with an end face of the mixing element body. apparatus. 4. The static fluid mixing device according to claim 1, wherein a fitting groove is formed in the side seal element body, into which a tip end side of the mixing element body is fitted.