JP2023125713A - Fluid mixer - Google Patents

Abstract

To provide a fluid mixer which can mix a liquid at a constant ratio without using electricity and generating time lag.SOLUTION: A fluid mixer 1 for mixing first fluid A by passing second fluid B therethrough at a constant ratio includes a first rotor 3 that is composed of an oval type gear rotated by flow of the first fluid A, an output side rotor 52 that is connected to a rotary shaft 32 of the first rotor 3 through a transmission mechanism 4 and is rotated by rotation of the first rotor 3, and a discharge mechanism 5 that is composed of a tube pump for discharging the second fluid B without electricity on the basis of the rotation amount of the output side rotor 52.SELECTED DRAWING: Figure 5

Description

The present invention relates to a fluid mixing device that mixes two or more types of fluids such as liquids and gases while discharging them. The present invention relates to a fluid mixing device that allows for mixing of fluids.

Conventionally, devices as described in the following patent documents have been proposed as liquid mixing devices for mixing two types of liquids.

For example, Patent Document 1 below describes a first flowmeter attached to a first pipe through which liquid A flows, a second flowmeter attached to a second pipe through which liquid B flows, and a first flowmeter attached to a second pipe through which liquid B flows. A differential gear operated by the output of the second flowmeter and the rotational output of the second flowmeter, a cam attached to the output shaft of the differential gear, a microswitch in contact with the outer circumference of this cam, and a microswitch that turns on the microswitch. A liquid mixing device has been proposed that includes an automatic valve that is activated by causing the liquid to mix. When using such a liquid mixing device, a cam is rotated through a differential gear by flowing liquid A, and a microswitch in contact with the cam is electrically turned on to open an automatic valve for liquid B. I try to let them do it.

Japanese Unexamined Patent Publication No. 48-98465

However, when mixing liquids using such a liquid mixing device, the following problems occur.

That is, such a liquid mixing device requires electricity to detect the ON/OFF state of the microswitch and to open and close the automatic valve, so it cannot be used in places where electricity cannot be secured.

In addition, in such a device, the differential gear rotates after liquid A flows, and the automatic valve opens after turning on the microswitch, so liquid B flows after liquid A flows. There will be a time lag between. Therefore, the mixing ratio cannot be ensured until the liquid B flows.

Therefore, in order to solve the above problems, the present invention aims to provide a fluid mixing device that can mix liquids at a constant ratio without using electricity or causing a time lag. do.

That is, in order to solve the above-mentioned problem, the present invention provides a fluid mixing device that mixes a first fluid through a second fluid at a constant ratio, in which a first rotation that is rotated by the flow of the first fluid is provided. and an output side rotor that is directly or indirectly connected to the rotation axis of the first rotor and rotates by the rotation of the first rotor, and based on the amount of rotation of the output side rotor, A discharge mechanism is provided for discharging the second fluid without using electricity.

With this configuration, the first rotor and the output rotor can be rotated almost simultaneously according to the flow of the first fluid, and the second fluid can be discharged according to the rotation of the output rotor. Therefore, the second fluid can be discharged and mixed without using electricity. Furthermore, since the first rotor and the output rotor rotate almost simultaneously, there is no time lag compared to the case where a switch or an on-off valve is used.

Moreover, in such an invention, the output side rotor is comprised by the rotor which comprises a tube pump.

With this configuration, the second fluid can be continuously discharged and mixed with the first fluid, and the tube can be deformed to generate negative pressure to suck in and discharge the second fluid. You will be able to do this.

Alternatively, the output side rotor is constituted by a gear that constitutes a gear pump.

Even with this configuration, the second fluid can be continuously discharged and mixed with the first fluid.

Furthermore, the first rotor is configured with an oval gear or a trefoil gear.

With this configuration, it is possible to mold by injection molding, and the number of parts can be reduced to reduce costs.

Further, a speed change mechanism is provided between the rotation shaft of the first rotor and the rotation shaft of the output rotor.

With this configuration, the number of rotations of the output rotor can be mechanically adjusted, so the amount of discharge of the second fluid can be adjusted.

According to the present invention, the first rotor and the output rotor can be rotated almost simultaneously according to the flow of the first fluid, and the second fluid can be discharged according to the rotation of the output rotor. , the second fluid can be discharged and mixed without the use of electricity. Furthermore, since the first rotor and the output rotor rotate almost simultaneously, there is no time lag compared to the case where a switch or an on-off valve is used.

An exploded perspective view of a fluid mixing device according to an embodiment of the present invention Diagram showing the first rotor in the same form A diagram showing a discharge mechanism using a tube pump in the same form. Diagram showing a discharge mechanism using a gear pump in another form Diagram showing the principle in the same form

An embodiment of the present invention will be described below with reference to the drawings.

The fluid mixing device 1 in this embodiment is configured to quantitatively mix two types of fluids such as liquids and gases while discharging them, and as shown in FIG. A pair of oval gears provided in the fluid flow path 23 between the inlet 21 and the outlet 22 of A, a transmission mechanism 4 provided on one rotating shaft 32 of the oval gears, and the transmission mechanism 4. An output side rotor 52 (see FIG. 3) provided on the output side rotation shaft 51 of the output side rotor 52 (see FIG. 3) is provided, and a discharge mechanism 5 is provided for discharging the second fluid B by the rotation of the output side rotor 52. It is something. In this way, mechanically, for example, by rotating the output side rotor 52 based on the flow of the first fluid A made of liquid and discharging the second fluid B (liquid or gas). , the second fluid B is discharged without using electricity and without causing a time lag from the discharge of the first fluid A. This embodiment will be described in detail below. The fluids used in this embodiment include low viscosity liquids such as water, beverages, disinfectants, medicines, colorants, etc., high viscosity liquids such as resin, and gases and granular materials. can be used, but is not limited to these.

First, the casing 2 includes an inlet 21 (see FIG. 2) and an outlet 22 for a first fluid A such as a liquid, and a fluid flow passage 23 is provided between them so that the first fluid A can pass therethrough. It is made of plastic, metal, etc.

A first rotor 3 that is rotated by the flow of the first fluid A is provided on the surface side of the casing 2. The first rotor 3 is rotated by the flow of the first fluid A, and may be a turbine, an impeller, a gear, an oval gear, a trefoil gear, or the like. At this time, if a turbine is used, the flow rate can be adjusted with high precision, but processing precision is required, and a straight pipe section, a rectifying plate, etc. must be provided in front of the turbine. Furthermore, in order to extract the power from the rotating shaft, a mechanism for converting the rotational force in the orthogonal direction is also required. On the other hand, when using an impeller, the structure is simple and the rotational power can be easily extracted in the direction of the rotation axis, but if drifted flow or swirling flow occurs, an error will occur in the flow rate, so It is necessary to install a section or a rectifying plate. Therefore, in this embodiment, an oval gear is used that can reduce the number of parts and cost, can be molded by injection molding, and can easily extract power along the rotation axis direction. ing. Although an oval gear is used here, a turbine, an impeller, a gear, a trefoil gear, or the like may also be used.

As shown in FIGS. 1 and 2, this oval gear has an elliptical shape and is provided with teeth meshing so that the major axis directions are orthogonal to each other. Then, these oval gears are housed in a housing part 24 that allows their respective rotations, and the gap between the gears and the housing part 24 is made as small as possible, and the first fluid A is applied to the joint part of each oval gear. I am making it possible to pass through. Among these oval gears, the rotating shaft 31 of the oval gear on one side is attached to the casing 2, as shown in FIG. 1, and the rotating shaft 32 of the oval gear on the other side is attached to the back side of the casing 2. It is installed to penetrate up to the point. The housing portion 24 containing these is sealed with a transparent cover 26 via a packing 25.

A transmission mechanism 4 is provided on one rotation shaft 32 of the first rotor 3 to adjust the rotation speed on the output side. As shown in FIG. 1, this transmission mechanism 4 is configured by providing a plurality of gears 41 and 42 with different numbers of teeth, and the rotation speed of the output side rotor 52 is determined by using the difference in the rotation speeds of these gears. can be adjusted. Here, for example, the number of teeth of the gear 41 attached to the rotating shaft 32 side of the oval gear is 14, while the number of teeth of the gear 42 attached to the rotating shaft 51 on the output side rotor 52 side is 25 to 40. I set it to rotate at a low speed. Although the transmission mechanism 4 is constructed of gears 41 and 42 here, a continuously variable transmission mechanism in which a belt is stretched between a drive pulley and a driven pulley may be used. When such a continuously variable transmission mechanism is used, the gap between each pulley is changed so that the rotational speed of the output rotor 52 can be adjusted steplessly.

The output side rotor 52 provided on the output side rotating shaft 51 of this transmission mechanism 4 is configured to be able to discharge the second fluid B quantitatively by its rotation, and is a gear pump, a screw pump, an eccentric It constitutes a part of a rotary pump type discharge mechanism 5 such as a pump or a tube pump. In this embodiment, a case will be described in which a tube pump is used.

As shown in FIG. 3, the tube pump constituting the discharge mechanism 5 rotates by supporting a plurality of pressers 53 around an output rotor 52 attached to a rotating shaft 51 of the transmission mechanism 4. A presser 53 is made to revolve inside a tube support member 54 attached so that the tube 55 is inscribed therein, and the tube 55 is rotated while being pressed by the presser 53. Then, by rotating the tube 55 while pressing it with the pusher 53, the second fluid B inside the tube 55 is forcibly discharged, and the suction port side is made negative pressure to suck the second fluid B. I try to incorporate it. Note that this tube 55 is made of a flexible member such as silicone or rubber, and is configured to be mixed with the first fluid A on the downstream side, as shown in FIG.

Next, the operation when mixing the first fluid A and the second fluid B using the fluid mixing device 1 configured in this way will be described.

First, a pipe through which the first fluid A flows is connected to the inlet 21 of the casing 2, and a pipe is also connected to the outlet 22. Further, a container for flowing the second fluid B is connected to the tube 55 attached to the casing 2, and the other end of the tube 55 is connected to a container on the discharge port 22 side.

In a situation where the pipes, tubes 55, etc. are connected in this way, the first fluid A, such as a liquid, is allowed to flow in from the inlet 21 at a constant flow rate.

Then, the first fluid A comes to flow through the fluid flow passage 23 to the discharge port 22 side, but at this time, it presses the end side of the oval gear in the fluid flow passage 23 in the longitudinal direction. Then, the first rotor 3 is rotated.

Then, this rotation rotates the rotating shaft 32, rotates the gear of the transmission mechanism 4 provided on the back side of the casing 2, and reduces the rotation speed.

Then, with the rotational speed reduced in this manner, the output side rotating shaft 51 is rotated, and the output side rotor 52 that constitutes the discharge mechanism 5 is rotated.

At this time, a presser 53 provided around the output rotor 52 rotates while pressing the tube 55 inscribed in the tube support member 54, thereby creating a negative pressure inside the tube 55 and causing the second fluid B to flow. Exhale while inhaling. Then, as shown in FIG. 5, this discharged second fluid B is mixed with the first fluid A.

As described above, according to the above embodiment, in the fluid mixing device 1 that mixes the first fluid A by passing the second fluid B at a constant ratio, the first fluid A is rotated by the flow of the first fluid A. The output rotor 52 includes one rotor 3 and an output rotor 52 that is connected to the rotation shaft 32 of the first rotor 3 via the transmission mechanism 4 and rotates by the rotation of the first rotor 3. Since the discharge mechanism 5 is provided to discharge the second fluid B based on the amount of rotation of the second fluid B, the second fluid B can be discharged and mixed without using electricity. . In addition, since the first rotor 3 and the output rotor 52 can be rotated almost simultaneously, there is no need to create a time lag until the second fluid B is discharged, compared to a case where a switch or an on-off valve is used. Things will disappear.

Note that the present invention is not limited to the above embodiments, and can be implemented in various forms.

For example, in the above embodiment, an oval gear is used as the first rotor 3, but as mentioned above, a gear that is rotated by water flow, such as a turbine, an impeller, a gear gear, or a trefoil gear, is used as the first rotor 3. Any rotor may be used.

Further, in the above embodiment, the second fluid B is mixed with the first fluid A, but the rotational driving force of the rotating shaft 32 of the first rotor 3 is branched, and three or more types of liquids are mixed. may be mixed.

Further, in the above embodiment, the rotation speeds of the first rotor 3 and the output rotor 52 are adjusted by the gear ratio, but the rotation speeds may be adjusted by replacing the gears.

Further, in the above embodiment, a tube pump is used as the discharge mechanism 5, but as shown in FIG. 4, a gear pump may be used to discharge the second fluid B. Further, when the discharge mechanism 5 is used in this way, only the rotating shaft 51 of the transmission mechanism 4 is made to protrude from the back side of the casing 2, so that the tube pump, gear pump, etc. can be replaced on the back side of the casing 2. Good too.

Further, in the above embodiment, the first rotor 3 is provided on the front side of the casing 2, and the ejection mechanism 5 is provided on the back side, but by providing the ejection mechanism 5 on the back side in this way, The ejection mechanism 5 may be replaced with another ejection mechanism. In this case, a tube pump, a gear pump, or the like is attached to the rotating shaft 51 from the transmission mechanism 4.

1... Fluid mixing device 2... Casing 21... Inflow port 22... Outlet port 23... Fluid flow path 24... Accommodation section
25...Packing 26...Cover 3...First rotor 31...Rotating shaft 32...Rotating shaft 4...Transmission mechanism 41...Gear 42...Gear 5... Discharge mechanism 51... Rotating shaft 52... Output side rotor 53... Presser 54... Tube support member 55... Tube

Claims (5)

In a fluid mixing device that mixes a first fluid through a second fluid at a constant ratio,
a first rotor rotated by the flow of the first fluid;
an output rotor that is directly or indirectly connected to the rotation shaft of the first rotor and rotates by the rotation of the first rotor;
A fluid mixing device characterized in that a discharge mechanism is provided for discharging the second fluid based on the rotation amount of the output rotor without using electricity. The fluid mixing device according to claim 1, wherein the output side rotor is constituted by a rotating body that constitutes a tube pump. The fluid mixing device according to claim 1, wherein the output side rotor is constituted by a gear that constitutes a gear pump. The fluid mixing device according to claim 1, wherein the first rotor is composed of an oval gear or a trefoil gear. The fluid mixing device according to claim 1, further comprising a speed change mechanism provided between the rotation shaft of the first rotor and the rotation shaft of the output rotor.

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