JPH01176868A - Flow path changeover device for two system fluid - Google Patents

Abstract

PURPOSE:To make the openings of a pair of fluid paths and a common discharge path variable by arranging a changeover valve member in a bypath communicating between one fluid lead-out path and the common discharge path. CONSTITUTION:A first changeover valve body 14 comprises a slide valve for sliding valve sections 15a, 15b, 15c in a valve casing 13 and performing open/ close control of lead-in paths 10a, 10b, lead-out paths 11a, 11b, and a common discharge path 12. The common discharge path 12 is communicated with a bypath 18 branched from an alkaline water lead-out path 11a in the downstream of the valve casing 13, while a second changeover valve member 19 is arranged between the bypath 18 and the alkaline water lead-out path 11a in order to switch the alkaline water selectively between the bypath 18 and the alkaline water lead-out path 11a.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a two-system fluid flow switching device, both of which include:
The second switching valve controls the fluid flowing into one dedicated outlet.
Regarding a flow path switching device that enables switching to a common drainage channel without moving the first switching valve, it is particularly suitable for installing it in the alkaline water discharge channel and acidic water discharge channel of an electrolyzed ionized water generator to control the flow of electrolyzed water. It is used for switching circuits and opening cleaning circuits.

[Problem to be solved]

An electrolytic ionized water generating device whose purpose is to generate alkaline water discards acidic water into a drainage canal, and an apparatus which generates acidic water discharges alkaline water into a drainage canal.

However, an electrolyzer that uses a cathode-anode electrode material that can electrolyze water by switching the polarity of the anode and cathode WZX series of the electrolyzer, and is capable of so-called reverse electrolysis, is capable of electrolyzing water with alkaline water. A pair of intake ports for acidic water are installed independently.
Furthermore, it is necessary to separately provide a drainage channel for draining water from one side while water is being taken from the other, and these channels need to be switched as appropriate depending on the purpose of use.

In addition, this type of electrolyzed water generation device is equipped with a cleaning liquid circuit from the electrolyzed water discharge side to the electrolytic cell in order to periodically clean the electrolyzer and related water supply and drainage circuit, and during electrolysis, the alkaline water discharge path and acid water The discharge path is switched to the cleaning circuit. In this case, the switching operation has conventionally been performed using a slide valve, but there has been a problem in that the alkaline water passage of the slide valve is covered with precipitated calcium carbonate, etc., so that the valve becomes inoperable.

The present invention has been made to solve these problems, and consists of connecting two systems of fluid fluid inlet channels to the corresponding dedicated outlet channels, or one inlet channel to the corresponding dedicated outlet channel. When the fluid is connected, the flow path can be switched so that the other channel is connected to the common drainage channel, and furthermore, both of the fluid introduction channels of the two systems can be shared by the second switching valve while the first switching valve is stopped. An object of the present invention is to provide a two-system fluid flow switching device that can communicate with a drainage channel.

Another object of the present invention is to provide the above-mentioned flow path switching device capable of adjusting the flow hl ratio of two fluid systems.

[Means for Solving the Problem] The main object of the present invention is to provide a valve casing having two fluid introduction channels and a common drainage channel for the two corresponding fluid introduction channels. A system that selectively switches between the respective outlet passages corresponding to the inlet passages of the two systems and the common drainage passage, and switches the fluid introduction passages of the two systems to the respective corresponding output passages when the common drainage passage is closed. 1 switching valve, a bypass leading from one fluid outlet path of the valve casing to the common drainage channel, and a second switching valve member provided between the one fluid outlet path and the bypass. This can be achieved by a switching device.

Another object of the present invention is - in the flow path switching device, the valve casing is formed into a cylindrical body in which an alkaline water passage, an acidic water passage, and a drainage passage are formed along the axial direction;
This can be achieved by making the valve element a slide valve element that slides within the cylindrical body and is capable of adjusting the flow rate by varying the opening/closing degree of the pair of fluid passages and the common drainage channel depending on the sliding position.

[Action of the invention]

Since the valve casing of the first switching valve is provided with an inlet passage and an outlet passage for the two systems of fluid, and a common drainage passage is provided in the two systems' introduction passages, the first
By operating the switching valve, it is possible to switch the flow paths so that when one of the fluid introduction paths is communicated with the corresponding outlet path, the other fluid introduction path is communicated with the common drainage channel. It is also possible to close the two systems and switch both of the two fluid introduction paths to communicate with the corresponding dedicated outlet paths.

Further, when the fluid is flowing through the fluid outlet path where the bypass is branched, and this fluid is switched to the bypass side by the second switching valve, both fluids of the two systems flow to the common drainage path.

As described above, according to the present invention, two systems of fluid can be switched to four types of flow paths.

When a slide valve is slidably fitted into a cylindrical valve casing in which passage openings are formed along the longitudinal direction, the degree of opening and closing of each passage can be varied depending on the position of the slide valve.
This adjusts the flow rate ratio of the two fluid passages.

[Embodiments of the invention]

Hereinafter, a case will be described based on the drawings in which the flow path switching device according to the present invention is installed in the alkaline water discharge path and the acidic water discharge path of the electrolyzed ionized water generation device, and thereby the supply/drainage and cleaning circuits of the ionized water generation device are switched. I will explain.

In the figure, reference numeral 1 denotes a so-called cylindrical electrolysis unit, which is an example of an electrolyzer used in an electrolytic ionized water generation device.
A pair of electrode chambers 5a and 5b extending in the axial direction are formed in the electrolytic cell 2 by arranging them facing each other and partitioning these electrodes with an electrolytic diaphragm 4 (ion exchange membrane).

In general, the inner electrode 3a is used as an anode, the outer electrode 3b is used as a cathode, and a DC voltage is applied to the picture electrode to electrolyze water in the electrolytic cell into alkaline ionized water and acidic water, but the polarity of the electrodes is The reverse may also be used, and the picture electrodes 3a and 3b
It is also possible to use a 'TA solution unit using a cathode-anode electrode material capable of electrolyzing water by switching the polarity.

Note that electrode materials that can be used for both cathode and anode include, for example, ferrite; magnetite; ceramics; titanium and titanium alloys; titanium plated with precious metals; and other materials that can be used not only as cathodes during electrolysis but also as anodes. In this case, examples include alloy materials that prevent anodic collapse on the electrode surface due to the electric charge of the ions in the material.

On one side of the electrolytic cell 2, there is provided a raw water supply path 6 for electrolysis that communicates with the electrode chambers 5a, 5b, and on the other side, an electrolyzed water discharge path that communicates with the pair of electrode chambers 5a, 5b separately. 7a and 7b are connected. Electrode 3a as shown
When the electrode 3b is used as a cathode and the electrode 3b is an anode, 7a becomes an alkaline water discharge path and 7b becomes an acidic water discharge path. In addition, 8 in the figure is an on-off valve for the water supply channel 6.

The flow path switching device of the present invention can be used by being installed in the alkaline water discharge path 7a and the acidic water discharge path 7b of such an electrolyzed ionized water generating device, and its details will be described below.

The flow path switching device 9 of the present invention includes an introduction path 10a communicating with the alkaline water discharge path 7a and an introduction path 10 communicating with the acidic water discharge path.
b, and respective outlet passages 11 corresponding to these introduction passages.
8.11b, and these pair of introduction passages 9a, 9b.
It has a valve casing 13 in which a common drainage channel 12 is provided, and inside this valve casing 13, these pair of introduction channels 10a.

A switching valve 14 is fitted to each outlet passage 11a, 11 corresponding to 10b.

In the illustrated embodiment, the valve casing 13 has a hollow cylindrical body, and has a pair of introduction passages 10a, 1' along the longitudinal direction of the cylindrical body.
Ob and a pair of lead-out passages 11a and llb are formed, and a common drainage channel 12 is provided between the pair of lead-out passages 11a and llb. The shared drainage channel 12 is preferably a drain channel 10a, in order to provide a throttling effect to the drainage channel when electrolyzed water is generated.
Make the diameter slightly smaller than lOb.

On the other hand, the valve body 14 slides the valve parts 15a, 15b, and 15c into the inside of the valve casing 13 to form the introduction passage 10a,
10b, outlet channels 11a, llb, and a slide valve for controlling the opening and closing of the common drainage channel 12. When the alkaline water inlet channel 10a is connected to the corresponding outlet channel 10a as shown in FIG. 1, the acidic water inlet channel 10b is When communicating with the common drainage channel 12 and closing the acidic water outlet channel 11b, conversely, when the acidic water inlet channel 10b is communicated with its corresponding outlet channel 11b, the alkaline water inlet channel 10a is communicated with the common drain channel 12. When the alkaline water outlet channel 11a is closed and the alkaline water and acidic water inlet channels 10a and 10b are simultaneously communicated with the corresponding outlet channels 11a and llb, the common drainage channel 12 is designed to close. ing.

Note that the switching valve 14 is located in the passage 10a of the casing 13.

10b, lla, llb, 12 openings and valve portions 15a, 1
The flow rate ratio of alkaline water and acidic water can be adjusted by adjusting the overlapping condition of 5b and 15c, and the pH value of the electrolyzed water to be used can be adjusted to a desired value. It is also possible to detect and extract the flow rate ratio as an electrical signal. This signal is used to control the electrolysis unit, etc.

The first switching valve 14 may be operated manually, but preferably it is operated by a motor 17a and a cam 17b as shown in the figure.

The common drainage channel 12 has a bypass 18 branched from the alkaline water outlet channel 11a downstream of the valve casing 13.
A second switching valve member 19 is provided between the bypass I8 and the alkaline water outlet path 11a to selectively switch the alkaline water to the bypass 18 and the alkaline water outlet path 11a. In this embodiment, the bypass 18 is used as part of the cleaning circuit of the electrolyzed water generator.

Further, a cleaning circuit 20 with a lower water level than the drainage channel 12 is branched from the downstream drainage channel 12 of the bypass 18, and the electrolyzer 1
It is connected to the electrolytic cell 2.

Thus, with the alkaline water inlet passage 10a communicating with the corresponding outlet passage 11a and the acidic water introduction passage 10b communicating with the common drainage channel 11b, the alkaline water outlet passage 11a is closed by the switching valve member 19, and the cleaning bypass 18 is closed. When you open it,
The alkaline water and acidic water flow into a cleaning circuit 20, where a cleaning circulation circuit is established.

It is preferable that the common drainage channel 12 has an open end so that pressure does not build up in the cleaning circulation circuit.

The switching valve member 19 is configured such that a valve 19b having a rubber backing fitted to the tip of a rod 19a is integrally fixed, and the rod 19a protruding outside is reciprocated by a motor 19c and a cam 19d. Preferably, the motor 19C of the switching valve member 19 and the cleaning liquid pump 22 are linked so that the cleaning bypass 18 is opened at the same time as the cleaning liquid pump is activated.

In addition, 24 is a two-stage flow switch valve provided in the alkaline water discharge path 7a and the acidic water discharge path 7b. This flow switch valve has two passages 25 and 26, an alkaline water discharge passage 7a and an acidic water discharge passage 7b, and a valve body 27 supported by a diaphragm 26 opens and closes the two passages 25 and 26 at the same time. In the illustrated embodiment, a main valve 28a is provided in the passage 25 of the alkaline water discharge passage 7a, and a driven valve 28b is provided in the passage 26 of the acidic water discharge passage 7b.

The main valve 28a has a through hole 29 that communicates with the upper part of the diaphragm 26 and the downstream side of the main valve 28a.When the alkaline water intake faucet is closed, the water pressure on the downstream side of the main valve 28a increases and the water flows upward through the diaphragm 29 through the through hole 29. Water flows backwards, passage 25
．． 26 at the same time and open the alkaline water faucet, the passage 25
．． 26 are opened at the same time. Note that 30 is a switch mechanism that detects the open/closed position of the valve body 27 and sends a detection signal.

In addition, although the example shown in the figure illustrates the case where the flow path switching device of the present invention is used in an electrolyzed ionized water generation device, the present invention is not limited to this, and can be applied to a device that switches two systems of fluid to four types of flow paths. Of course, it can be commonly applied.

In the figure, numeral 31 is a flow path switching valve used when the electrolyzer 1 is capable of reverse electrolysis, and is preferably driven in synchronization with the polarity switch of the electrolyzer. Further, 32 is a supply device for minerals and other electrolytic additives added to the raw water, and 33 is a silver ion supply unit for imparting sterilizing power to the supplied raw water.

The on-off valve 8 for the water supply channel may be a manual one or an automatic one that is linked to a signal from another device, such as a flow switch valve or an electrolyzer switch.

〔Effect of the invention〕

The device of the present invention is capable of switching between two flows in four ways, and particularly when used in an electrolytic ionized water generating device, it has the following excellent advantages.

First, electrolytically generated alkaline water and acidic water can be used selectively or simultaneously by operating the valve body of the valve casing of the flow path switching valve device.

Furthermore, when the flow path is switched to the cleaning bypass during intake of alkaline water, the cleaning circulation circuit is opened, and the cleaning liquid circulates within the device without moving the valve body in the valve casing. Therefore, the problem of the valve body in the valve casing becoming inoperable due to calcium adhesion can be solved.

The valve body inside the valve casing also has the function of adjusting the flow rate ratio, and when the drainage channel is opened, no pressure is applied to the cleaning circuit, making equipment maintenance easier.

[Brief explanation of the drawing]

The figure is a longitudinal sectional view of a main part when the flow path switching device of the present invention is used in an alkaline water discharge path and an acidic water discharge path of an electrolyzed ionized water generating device. ■... Electrolyzer, 3a, 3b... Electrode, 7a...
・Alkaline water drain, 7b... Acidic water drain, 9
...Flow path switching device, 10a, lla...Alkaline water passage, ]Ob, llb...Acidic water passage,
12... Common drainage channel, 14... Valve body, 18
...Cleaning bypass, 19...Cleaning switching valve member, 20...Cleaning circuit, 24...Two-stage flow switch valve, 26...Diaphragm, 29...
Through hole. Patent applicant Tatsuo Okazaki Representative Patent attorney Naoyoshi Sato

Claims (2)

[Claims] (1) In a valve casing having two systems of fluid introduction passages, two corresponding fluid outlet passages, and a drainage passage shared by the two systems of introduction passages, a valve casing corresponding to the two systems of introduction passages is provided. A first switching valve is provided which selectively switches between the respective outlet channels and the common drainage channel, and which switches the two fluid introduction channels to the respective corresponding outlet channels when the common drainage channel is closed; A dual fluid flow system characterized in that a bypass is provided from one fluid outlet path of the valve casing to the common drainage channel, and a second switching valve member is provided between the one fluid outlet path and the bypass. Road switching device. (2) The valve casing of the flow path switching device consists of a cylindrical body that forms an alkaline water passage, an acidic water passage, and a drainage passage along the axial direction, and the valve body slides within the cylindrical body, and depending on the sliding position, A two-system fluid flow switching device characterized by being a slide valve body capable of adjusting the flow rate to vary the opening/closing degree of a pair of fluid passages and a common drainage channel.