JP2012148244A - Mixing and discharging device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mixing and discharging device capable of mixing two kinds of liquids at a predetermined ratio precisely.SOLUTION: The mixing and discharging device 100 includes tanks 1, 2 to store a first fluid and a second fluid respectively, pumps 3, 4 to feed each fluid under pressure, a merging part 5 into which each fluid is merged, a non-driven type mixer 6 to mix each fluid, a mixing ratio determining part 7 to determine a mixing ratio of each fluid upstream of the merging part 5, and also has a check valve 12 in the merging part 5. The mixing ratio determining part 7 includes a first pathway 17 through which a first fluid passes, a second pathway 18 through which a second fluid passes, and a pressure adjusting unit 19 including a pressure detecting part to detect the pressure of each fluid passing through the first pathway 17 and the second pathway 18, and a pressure adjusting part to adjust the flow rate of the first fluid and the second fluid by changing the pathway area of the first pathway 17 and the second pathway 18 according to the difference between each pressure detected by the pressure detecting part on the downstream side of the pressure detecting part.

Description

  The present invention relates to a mixing / discharging device that measures, mixes, and discharges two types of liquids.

Some paints and adhesives are used by being cured by mixing two kinds of liquids. As an apparatus for mixing such paints and adhesives, there is a mixed discharge system as disclosed in Patent Document 1.
The mixing and discharging system described in Patent Document 1 pumps two types of liquid stored in separate tanks by discharging a predetermined amount of liquid from each tank using a pump, and mixes them with a non-drive type mixing device. To do.

  When mixing two types of liquids, there is an inherent mixing ratio depending on the combination of liquids used. Therefore, the two types of liquids need to be mixed at a predetermined ratio, and it is preferable that the mixing and discharging apparatus is provided with means for confirming the mixing ratio. FIG. 5 illustrates a mixing / discharging device 200 including means for confirming the mixing ratio.

  The mixing and discharging device 200 includes tanks 1 and 2 that respectively store two types of liquids, pumps 3 and 4 that pump the liquids from the tanks 1 and 2, and a mixing device 6 that mixes two types of liquids Mixing ratio confirmation sections 57a and 57b for confirming the mixing ratio of the two kinds of liquids are provided.

  The two types of liquids stored in the tanks 1 and 2 are pumped through separate paths 8 and 9 and merge at the junction 5 on the upstream side of the mixing device 6. Since the curing reaction starts when the two types of liquids are mixed, the junction 5 is provided with a check valve 12 for preventing backflow.

  The mixing ratio confirmation parts 57 a and 57 b are connected in the middle of the path through which each liquid passes from the tanks 1 and 2 toward the joining part 5. Valves 15a, 15b, 16a, and 16b are provided at the connection portion so that the flow of each liquid from the paths 8 and 9 can be switched to the mixing ratio confirmation portions 57a and 57b. When confirming the mixing ratio, the valves 16a and 16b are closed, and the valves 15a and 15b on the mixing ratio confirmation part side are opened to guide the respective liquids to the confirmation paths 17 and 18 of the mixing ratio confirmation parts 57a and 57b. One ends of the confirmation paths 17 and 18 are open to the atmosphere, and each guided liquid is ejected from here, and the mixing ratio is confirmed by measuring the weight of each ejected liquid.

JP 58-150462 A (Claims)

  In the mixing and discharging apparatus 200 having the configuration shown in FIG. 5, the pressure applied to each liquid guided to the confirmation path may be different from the pressure applied to each liquid when passing through the junction. For example, in the mixing apparatus 200, when 15a and 15b are closed, 16a and 16b are opened, the supply pressure of the air motor 10 (pressure gauge 27) is 0.4 MPa, and the main agent and the curing agent are pumped from each tank, Although the pressure gauge 26a shows 2.2MPa-3.9MPa and the pressure gauge 26b shows 1.8MPa-3.8MPa, the pressure of both paths in the confluence | merging part 5 vicinity becomes substantially equal. Further, in the mixing apparatus 200, when 16a and 16b are closed, 15a and 15b are opened, the supply pressure of the air motor 10 (pressure gauge 27) is 0.3 MPa, and the main agent and the curing agent are pumped from each tank, The pressure gauge 26a indicates 4 MPa to 6.5 MPa, and the pressure gauge 26b indicates 0.8 MPa to 1.6 MPa. Since the pressure difference causes a difference in the discharge amount, in the above case, the mixing ratio of each liquid actually pumped to the mixing device cannot be accurately measured according to the mixing ratio confirmed in the mixing ratio confirmation path. Problems arise.

  If the two types of mixing are performed manually, they can be mixed at a desired ratio. However, in such a case, problems such as unstable quality, labor cost, and long manufacturing time occur.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a mixing and discharging apparatus capable of accurately mixing two kinds of liquids at a predetermined ratio.

The present inventors have paid attention to a check valve provided in the merging portion as a cause of the pressure difference between the merging portion and the confirmation path. The check valve has a structure that restricts a flow from a higher pressure to a lower pressure and allows a reverse flow. In general, two types of liquids that are mixed and used have different viscosities and discharge amounts. Therefore, when pumped, there is a difference in pressure applied to each liquid. When there is such a pressure difference, another liquid on the low pressure side is blocked while the high pressure side liquid flows in the junction, and the pressure on the low pressure side increases during that time. When the pressure becomes higher than the pressure on the high pressure side, another liquid that was on the low pressure side flows out. As a result, the pressure on the low pressure side decreases, and another liquid is blocked again. That is, in the junction where the check valve is provided, there is a mutual relationship in which the pressure on the low pressure side also changes due to the influence of the pressure on the high pressure side.
It is difficult to reproduce the physical phenomenon at the junction as described above even if pressure is intentionally applied by a device that applies pressure loss.

  In order to solve the above-described problems, the present invention provides a tank that contains a first fluid and a second fluid, a pump that pumps the first fluid and the second fluid, and the first fluid. And the second fluid, a non-drive type mixing device that mixes the first fluid and the second fluid, and the first fluid upstream of the junction. And a mixing ratio confirmation section for confirming a mixing ratio between the second fluid and the second fluid, and a valve that restricts a flow from a higher pressure to a lower pressure and allows a reverse flow in the merging section. The mixing ratio confirmation unit includes a first path through which the first fluid passes, a second path through which the second fluid passes, the first path, and the second path. A pressure detector for detecting the pressure of each fluid upstream of the path; and the first path and the first path The opening area of the first path and the second path is changed according to the pressure difference between the fluids detected by the pressure detection unit on the downstream side of the pressure detection unit of the path, and the first fluid and Provided is a mixing and discharging apparatus including a flow rate adjusting unit that adjusts the flow rate of the second fluid.

  In the above invention, the flow rate adjusting unit changes the path area of each path according to the pressure difference between the fluids. That is, when there is a difference between the pressure of the first fluid and the pressure of the second fluid, the path area is changed so that each fluid approaches the reference with respect to the pressure of the other fluid. Let Thereby, the pressure of the first fluid and the pressure of the second fluid can be made substantially equal on the downstream side of the flow rate adjusting unit.

  For example, when the pressure of the first fluid is higher than the pressure of the second fluid, the flow rate adjusting unit operates so as to widen the path area of the first path and narrow the path area of the second path. As a result, in the first path, the flow rate of the first fluid increases and thus the pressure decreases, and in the second path, the flow rate of the second fluid decreases and the pressure increases. Since the path area changes according to the pressure difference between the fluids, the pressures of the fluids that have passed through the path adjusting unit are substantially equal.

  The physical phenomenon described above is a reproduction of a physical phenomenon that occurs in a valve that restricts a flow from a higher pressure to a lower pressure in the junction and allows a reverse flow. Therefore, when the mixing ratio confirmation unit has the above-described configuration, the mixing ratio confirmed by the mixing ratio confirmation unit becomes substantially equal to the mixing ratio of the first fluid and the second fluid that are pumped to the mixing unit.

  According to the present invention, since the mixing ratio confirmation unit includes the pressure adjustment unit having the above-described configuration, the mixing / discharging apparatus can accurately mix two fluids at a predetermined mixing ratio.

It is a flowchart of the mixed discharge apparatus which concerns on 1st Embodiment. It is a figure which shows an example of arrangement | positioning of the non-return valve in a junction part. It is sectional drawing of the pressure adjustment unit in 1st Embodiment. It is sectional drawing of the pressure adjustment unit in 2nd Embodiment. It is a flowchart of the conventional mixing and discharging apparatus.

[First Embodiment]
Hereinafter, a mixing and discharging apparatus according to a first embodiment of the present invention will be described with reference to FIG.
FIG. 1 is a flowchart of the mixed discharge device 100 according to the first embodiment.
The mixing / discharging device 100 is a device that mixes and discharges two-component materials (main agent and curing agent) at a predetermined mixing ratio. The mixed material discharged from the mixed discharge device 100 is filled in the cartridge. The cartridge is attached to a gun and applied to the fuel tank tank of an aircraft.

  The mixing and discharging apparatus 100 includes a main agent tank 1, a hardener tank 2, a main agent fixed amount discharge pump 3, a hardener fixed amount discharge pump 4, a merging unit 5, a non-drive type mixing device 6, and a mixing ratio confirmation unit 7. .

  The main agent tank 1 contains a main agent (first fluid). As the main agent, for example, a urethane-based or silicon-based solution is used. The main agent may be a compressible fluid containing microbubbles. When PR-1776MB-2 manufactured by PPG is used as the main agent, the viscosity is about 11000 cps.

  The curing agent tank 2 stores a curing agent (second fluid). As the curing agent, a solution having an action of curing the main agent by mixing is used.

A main agent fixed amount discharge pump 3 is connected to the main agent tank 1. The main agent fixed amount discharge pump 3 is provided with a discharge port for discharging the main agent, and a main agent pumping path 8 for pumping the main agent is connected to the discharge port.
A curing agent metering discharge pump 4 is connected to the curing agent tank 2. The curing agent metering discharge pump 4 is provided with a discharge port for discharging the curing agent, and a curing agent pumping path 9 for pumping the curing agent is connected to the discharge port.
The main agent fixed amount discharge pump 3 and the hardener fixed amount discharge pump 4 are volumetric pumps, and the capacity is determined by the combination of the main agent and the hardener used.

  The main agent pumping path 8 and the curing agent pumping path 9 are tubular. The diameter of the tube is appropriately set according to the type and combination of the main agent and the curing agent to be used. Usually, the pressure loss of the higher viscosity is determined, and the diameter of the lower viscosity is determined accordingly. The main agent pumping path 8 and the curing agent pumping path 9 may have different diameters.

  The main agent fixed amount discharge pump 3 and the hardener fixed amount discharge pump 4 are pivotally supported at one end and connected to a connecting link 11 driven by an air motor 10 that is power, and the other end of the connecting link 11 is driven. Thus, the main agent and the curing agent are quantitatively discharged from the main agent tank 1 and the curing agent tank 2, respectively.

  The main agent pumping path 8 and the curing agent pumping path 9 are merged at the merging portion 5. The junction 5 is provided with a check valve 12. In FIG. 1, the check valve 12 is provided on the side of the hardener pressurization path 9 at the junction A, but the position where the check valve 12 is provided is not limited to this, and the main agent pressurization path 8 side of the junction A is Alternatively, it may be provided on both paths 8 and 9 side of the junction point A.

  In FIG. 2, an example of arrangement | positioning of the non-return valve 12 in the junction part 5 is shown. The main agent pressure feed path 8 is inserted on the upstream side of the merging portion 5, and a first check valve 12 a is provided at the end of the main agent pressure feed path 8. In the merging portion 5, an end portion of the curing agent pumping path 9 is inserted downstream of the first check valve 12 a in the main agent flow direction. A second check valve 12b is provided at an end of the curing agent pumping path 9 arranged toward the downstream side along the flow direction of the main agent.

  In FIG. 1, a non-drive type mixing device 6 is connected to the downstream side of the merging portion 5. An example of the non-driving type mixing device 6 is a static mixer. The static mixer is a static mixer (line mixer) without a drive unit, and includes an element in the mixer. The fluid entering the mixer is stirred and mixed sequentially by the element.

  A discharge port 13 is provided on the downstream side of the mixing device 6 and is open to the atmosphere. A flow rate adjusting valve 14 is provided between the mixing device 6 and the discharge port 13.

  The mixing ratio confirmation unit 7 is connected to the main agent pumping path 8 and the curing agent pumping path 9 on the upstream side of the merging unit 5. Valves 15a, 15b, 16a, and 16b are provided at the connection portion so that the flow of the main agent and the curing agent can be switched from the main agent pressure feeding path and the curing agent pressure feeding path to the mixing ratio confirmation unit.

The mixing ratio confirmation unit 7 includes a main agent confirmation path (first path) 17, a curing agent confirmation path (second path) 18, a pressure adjustment unit 19, and a weigh scale 20.
One end of the main agent confirmation path 17 and the curing agent confirmation path 18 is connected to the main agent pressure feeding path 8 and the curing agent pressure feeding path 9 so that the fluid can move. The other ends of the main agent confirmation path 17 and the curing agent confirmation path 18 have discharge ports 21a and 21b, which are open to the atmosphere. On the upstream side of the discharge ports 21a and 21b of the main agent confirmation path 17 and the curing agent confirmation path 18, flow rate adjusting valves 22a and 22b are provided, respectively. The weigh scale 20 is arranged so that the main agent and the curing agent discharged from the discharge ports 21a and 21b can be respectively measured.
The diameters of the main agent confirmation path 17 and the curing agent confirmation path 18 are appropriately set according to the main agent and the curing agent used. The diameters of both paths 17 and 18 may be different.

  FIG. 3 shows a cross-sectional view of the pressure adjustment unit. The pressure adjustment unit 19 includes a pressure detection unit 31 and a flow rate adjustment unit 32. Between the main agent confirmation path 17 and the curing agent confirmation path 18, through holes are provided on the upstream side and the downstream side.

  The pressure detector 31 is slidably disposed in the through hole on the upstream side. One end surface 33a of the pressure detector 31 is in contact with the main agent, and the other end surface 33b is in contact with the curing agent. The areas of the one end face 33a and the other end face 33b are set as appropriate, and the area of one end face may be different from the area of the other end face.

  The pressure detector 31 can move between the main agent confirmation path 17 and the curing agent confirmation path 18 according to the difference between the pressure applied to the main agent and the pressure applied to the curing agent. For example, when the pressure of the main agent confirmation path 17 is higher than the pressure of the curing agent confirmation path 18, the main agent presses the end surface of the pressure detection unit 31 on the side of the main agent confirmation path 17, and the pressure detection unit 31 is moved to the curing agent confirmation path 18 side. Move to. A bush 34 and a seal member 35 are arranged on the wall surface of the through hole so that the main agent and the curing agent do not enter from the gap between the pressure detection unit 31 and the through hole.

The flow rate adjusting unit 32 includes a flow rate adjusting needle 36 and a needle receiving unit 37.
The flow rate adjusting needle 36 is slidably disposed in the through hole on the downstream side. One end 38 a of the flow rate adjusting needle 36 faces the main agent confirmation path 17, and the other end 38 b faces the curing agent confirmation path 18. The flow rate adjustment needle 36 is connected to the central portion of the pressure detection unit 31 at the central portion thereof, and moves between the main agent confirmation path 17 and the curing agent confirmation path 18 in conjunction with the pressure detection unit 31.

  The needle receiving portion 37 is provided on the wall surface of the main agent confirmation path 17 and the hardener confirmation path 18 so as to be able to receive the end portions 38a and 38b of the flow rate adjustment needle 36, respectively. The space area between the flow rate adjusting needle 36 and the needle receiving portion 37 varies depending on the movement of the flow rate adjusting needle 36. The shape and size of the needle receiving portion 37 are arbitrary, and are appropriately designed according to the time constant, gain, etc. of the main agent or curing agent used. In the present embodiment, the needle receiving portion 37 has a shape including a hemispherical recess that can receive the tip of the flow rate adjusting needle 36. Note that the needle receiving portion may be omitted.

Next, the operation of the mixed discharge device 100 according to the present embodiment will be described.
The main agent fixed amount discharge pump 3 and the hardener fixed amount discharge pump 4 supply air with the air motor 10 and operate the connecting link 11 to discharge the main agent and the hardener from the respective tanks 1 and 2. The discharged main agent and the curing agent are respectively pumped through the main agent pumping path 8 and the curing agent pumping path 9, merged at the junction 5, mixed by the mixing device 6, and discharged via the flow rate adjustment valve 14. The

  The amounts of the main agent and the hardener discharged by the main agent fixed amount discharge pump 3 and the hardener fixed amount discharge pump 4 are the same as those of the connecting link 11 when the main agent fixed amount discharge pump 3 and the hardener fixed amount discharge pump 4 are connected to the connecting link 11. Control is performed by changing the stroke by adjusting the distance from the shaft fulcrum 25. For example, if the distance from the pivot point 25 is shortened, the discharge amount decreases.

  The main agent and the curing agent have a specific mixing ratio depending on the combination. Accordingly, the distance from the pivot point 25 is set so that the main agent and the curing agent are pumped to the main agent pumping path 8 and the curing agent pumping path 9 at a predetermined ratio.

  The pressure applied to the main agent and the curing agent in the main agent pumping path 8 and the curing agent pumping path 9 is measured by the pressure gauges 26a and 26b, and the main agent and the curing agent are mixed at the downstream side of the pressure gauges 26a and 26b. 7 and confirm the amount of the main agent and the curing agent actually pumped by measuring the weight. If the amount of the main agent and curing agent confirmed is not a predetermined ratio, the distance from the pivot point is adjusted by moving the connection positions of the metering discharge pumps 3 and 4 so that the main agent and the curing agent are discharged at a predetermined ratio. To do.

  When confirming the mixing ratio, the valves 16a and 16b are closed and the valves 15a and 15b are opened to guide the main agent and the curing agent to the main agent confirmation path 17 and the curing agent confirmation path 18 of the mixing ratio confirmation unit 7, respectively. The pressure applied to the main agent and the curing agent is detected by the pressure detection unit 31 on the upstream side of the main agent confirmation path 17 and the curing agent confirmation path 18. The pressure detection unit 31 is slid to the confirmation path side having the lower pressure, and operates so that the pressures detected by the both end faces 33a and 33b are balanced. At that time, on the downstream side of the main agent confirmation path 17 and the curing agent confirmation path 18, the flow rate adjustment needle 36 is slid to the confirmation path side of the lower pressure in conjunction with the operation of the pressure detection unit 31. As the flow rate adjusting needle 36 slides, the space area between the flow rate adjusting needle 36 and the needle receiving portion 37 changes, and the flow rates of the main agent and the curing agent flowing through the main agent confirmation path 17 and the curing agent confirmation path 18 are adjusted. The The main agent and the curing agent that have passed through the pressure adjusting unit 7 have substantially the same pressure, and are discharged through the flow rate adjusting valves 22a and 22b.

  According to the mixing and discharging apparatus according to this embodiment, the mixing ratio confirmation unit 7 can reproduce the physical phenomenon that occurs in the merging unit 5, that is, chattering that occurs due to the presence of the check valve 12. Accordingly, it is possible to operate so that the main agent and the curing agent are mixed at the mixing ratio as confirmed by the mixing ratio confirmation unit.

[Second Embodiment]
The mixing and discharging apparatus according to the present embodiment has the same configuration as that of the first embodiment except that the pressure adjustment unit is different.
FIG. 4 shows a cross-sectional view of the pressure adjustment unit according to the present embodiment.
The pressure adjustment unit 40 includes pressure detection units 41a and 41b and flow rate adjustment units 42a and 42b. In the present embodiment, the pressure adjustment unit 40 is provided in each of the main agent confirmation path 17 and the curing agent confirmation path 18.

  The pressure detectors 41a and 41b are pressure gauges provided with pressure detection surfaces that are in contact with the main agent and the curing agent flowing in the confirmation paths 17 and 18, respectively. The pressure gauge is electrically connected to the sequencer 46.

The flow rate adjusting parts 42a and 42b are composed of flow rate adjusting needles 43a and 43b and needle receiving parts 44a and 44b. The flow rate adjustment units 42a and 42b are disposed on the downstream side of the pressure detection units 41a and 41b.
The flow rate adjusting needles 43a and 43b are inserted into the through holes provided in the wall surfaces of the confirmation paths 17 and 18 so as to be slidable in the through holes. A bush 34 and a seal member 35 are arranged on the wall surface of the through hole so that the main agent and the curing agent do not enter from the gap between the flow rate adjusting needles 43a and 43b and the through hole. One end 45a and one end 45b of the pressure detectors 41a and 41b face the confirmation paths 17 and 18, respectively.

  A spline 47, a rotary screw 48, and a servo motor 49 are sequentially connected to the other ends of the flow rate adjusting needles 43a and 43b. The servo motor 49 is connected to a controller connected to the sequencer 46.

  The needle receiving portions 44a and 44b are respectively provided on the inner wall surfaces of the main agent confirmation path 17 and the curing agent confirmation path 18 so as to receive the one end portions 45a and 45b of the flow rate adjusting needles 43a and 43b. The space area between the flow rate adjusting needles 43a and 43b and the needle receiving portions 44a and 44b varies depending on the movement of the flow rate adjusting needles 43a and 43b. The shape and size of the needle receiving portions 44a and 44b are arbitrary, and are appropriately designed according to the time constant, gain, etc. of the main agent or curing agent used. The needle receiving portions 44a and 44b may be omitted.

Next, the operation of the pressure adjustment unit 40 will be described.
When the main agent and the curing agent are pumped to the main agent confirmation path 17 and the curing agent confirmation path 18, respectively, the pressure applied to the main agent and the curing agent is detected by the pressure detection units 41a and 41b. Information on the detected pressure in the confirmation paths 17 and 18 is transmitted to the sequencer 46. The sequencer 46 determines the distance between the flow rate adjusting needles 43a and 43b and the needle receiving portions 44a and 44b so that the pressures in the confirmation paths 17 and 18 are balanced based on the transmitted pressures in the confirmation paths 17 and 18. Determine. Information on the distance determined above is transmitted to the controller 50. Based on the transmitted distance information, the controller 50 drives the servo motor 49 and slides the flow rate adjusting needles 43a and 43b, whereby the distance between the flow rate adjusting needles 43a and 43b and the needle receiving portions 44a and 44b. To control. As a result, the amounts of the main agent and the curing agent flowing through the confirmation paths 17 and 18 are adjusted.

  The mixing ratio confirmation unit 7 including the pressure adjustment unit 40 having the above configuration can reproduce the physical phenomenon that occurs in the merging unit 5, that is, chattering that occurs due to the presence of the check valve 12. Accordingly, it is possible to operate so that the main agent and the curing agent are mixed at the mixing ratio as confirmed by the mixing ratio confirmation unit.

DESCRIPTION OF SYMBOLS 1 Main agent tank 2 Hardener tank 3 Main agent fixed amount discharge pump 4 Hardener fixed amount discharge pump 5 Junction part 6 Mixing device 7, 57a, 57b Mixing ratio confirmation part 8 Main agent pressure feed path 9 Hardener pressure feed path 10 Air motor 11 Connection link 12, 12a , 12b Check valve 13, 21a, 22b Discharge port 14, 22a, 22b Flow rate adjusting valve 15a, 15b, 16a, 16b, 24 Valve 17 Main agent confirmation path 18 Hardener confirmation path 19 Pressure adjustment unit 20 Weigh scale 23 Regulator 25 Shaft Support points 26a, 26b, 27 Pressure gauges 31, 41a, 41b Pressure detectors 32, 42a, 42b Flow rate adjusters 33a, 33b End faces (pressure detectors)
34 Bush 35 Seal member 36, 43a, 43b Flow rate adjusting needle 37, 44a, 44b Needle receiving portion 38a, 38b, 45a, 45b End (flow rate adjusting needle)
46 Sequencer 47 Spline 48 Rotary ball screw 49 Servo motor 50 Controller 100 Mixing and discharging device

Claims (1)

Tanks respectively containing a first fluid and a second fluid;
A pump for pumping the first fluid and the second fluid;
A merge portion where the first fluid and the second fluid merge;
A non-drive type mixing device for mixing the first fluid and the second fluid;
A mixing ratio confirmation unit for confirming a mixing ratio of the first fluid and the second fluid on the upstream side of the merging unit;
With
A mixing and discharging device provided with a valve that restricts the flow from the higher pressure side to the lower side and allows the flow in the reverse direction at the merging portion,
The mixing ratio confirmation unit is
A first path through which the first fluid passes;
A second path through which the second fluid passes;
A pressure detection unit that detects the pressure of each fluid passing through the first path and the second path, and a pressure difference between the fluids detected by the pressure detection unit on the downstream side of the pressure detection unit. A pressure adjusting unit including: a flow rate adjusting unit that adjusts flow rates of the first fluid and the second fluid by changing path areas of the first route and the second route;
A mixing and discharging apparatus.

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