JPH07148490A - Apparatus for preparing strongly acidic water with check valve for cock - Google Patents

Abstract

PURPOSE:To provide a strongly acidic water preparing apparatus provided with a check valve for a cock which can prevent a drain pipe guiding strongly acidic water to the cock from rusting and can keep long life. CONSTITUTION:A raw water introduced into an electrolytic cell 25 wherein an electrolytic diaphragm 26 is arranged between an anode 27 and a cathode 28 is mixed with an electrolytic liq. and this mixed water is electrolyzed by applying an electrolytic voltage between both electrodes 27 and 28. In the case where a strongly acidic water preparing apparatus wherein strongly acidic water is prepared on the anode room 25a side contg. the anode 27 and this prepared water is discharged from cocks 7 and 9 through drain pipes 61 and 62, a check valve 4 which is opened by discharging pressure during drainage of the prepared water and is closed when this dicharging pressure decreases is attached on a connecting part of the base end sides 7a and 9a of the cocks 7 and 9 with the drain pipes 61 and 62.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a strongly acidic water generator for electrolyzing raw water to generate strongly acidic water, and in particular, it is provided with a check valve for faucet capable of blocking the entry of outside air from the faucet. It relates to a strongly acidic water generator.

[0002]

2. Description of the Related Art When tap water or other raw water is electrolyzed in an electrolytic cell, alkaline ionized water is produced from the cathode side of the electrolytic cell and acidic water is produced from the anode side. When decomposed, strongly acidic water can be produced. This strongly acidic water has chlorine gas generated by the electrode reaction in the electrolytic cell dissolved in water in a gas hydrated state, and therefore has a quick and strong bactericidal action due to the oxidizing power of chlorine gas.

This strongly acidic water kills bacteria such as Vibrio parahaemolyticus, resistant staphylococcus (MRSA), etc.
Attention has been paid to the fact that it is suitable for disinfecting medical staff and inpatients, and a strongly acidic water generator for generating this strongly acidic water is being installed in medical facilities such as hospitals.

In this strongly acidic water producing apparatus, an operation button is provided on the front surface of the apparatus main body, and a faucet for strongly acidic water is attached. In addition, an electrolyzer, an electrolysis power source, a control unit and the like are built in the apparatus body. The electrolyzer comprises an anode chamber and a cathode chamber separated by a diaphragm. An anode is arranged in the anode chamber and a cathode is arranged opposite to the cathode chamber. The electrolysis power source is connected to a positive electrode and a negative electrode, and is configured to apply a DC voltage to both electrodes to electrolyze water introduced into the electrolytic cell.

On the introduction pipe side of the electrolysis tank, a water supply valve for supplying and stopping tap water at the start and end of electrolysis and a flow meter for measuring the flow rate of tap water are provided. In addition, a discharge pipe from a storage tank that stores salt water is connected to the connecting pipe line between the flow meter and the electrolytic cell, and salt water in this storage tank can be appropriately mixed with tap water and supplied to the electrolytic cell. I am trying.

Further, the end of the drainage pipe connected to the faucet for strongly acidic water is connected to the anode chamber side of the electrolytic cell, and the end of the external drainage pipe is connected to the cathode chamber side, respectively, to start electrolysis. At times, the strongly acidic water and the alkaline ionized water generated in each chamber of the electrolytic cell are discharged so that water can be appropriately taken.

[0007]

By the way, in the above-mentioned conventional strongly acidic water generator, at the end of electrolysis, outside air enters the drain pipe connecting the anode chamber side of the electrolytic cell and the faucet to rust due to oxidation, There was a problem that it was easily deteriorated.

That is, when the user operates the operation button when taking the strongly acidic water, the strongly acidic water is discharged from the anode chamber side of the electrolytic cell through the drain pipe to the strongly acidic water faucet. It On the other hand, when the operation button is pressed again, the control unit closes the water supply valve to stop the introduction of the mixed water into the electrolytic cell and also cuts off the supply voltage to the electrodes.

When the electrolysis is completed in this way, the strongly acidic water is not sent from the side of the anode chamber to the strongly acidic water faucet, so that the outside air infiltrates into the drain pipe from the faucet. In this state, since the water droplets of the strongly acidic water remained in the drainage pipe, they contacted the air to oxidize the inner wall of the pipe, causing rusting.

Such rusting due to oxidation is promoted along with the intake of strongly acidic water, and eventually the inner wall of the pipe is significantly deteriorated so that the drainage pipe becomes unusable and must be replaced early. It was

Further, since the outside air enters the drainage pipe through the faucet, the strongly acidic water returns to the drainage pipe due to the weight of the water, so that the strongly acidic water is again discharged from the faucet by a delay of the time for sending water through the drainage pipe. , There was also a problem that water did not come out of the faucet immediately.

The present invention was devised to solve the above problems, and its purpose is to prevent rusting of a drainage pipe that guides strongly acidic water to a faucet and keep it for a long life. It is an object of the present invention to provide a strongly acidic water generator equipped with a check valve for faucet that can immediately discharge strongly acidic water from the faucet even when the operation is stopped.

[0013]

In order to solve the above-mentioned problems, a strongly acidic water generator according to the present invention uses an electrolytic solution in raw water introduced into an electrolytic cell having an electrolytic diaphragm between a positive electrode and a negative electrode. The mixed water is electrolyzed by applying an electrolytic voltage to the both electrodes to generate strongly acidic water on the side of the anode chamber accommodating the positive electrode, and the generated water is discharged from the faucet through the drain pipe. In a strongly acidic water generator that discharges, a check valve that opens at the connection between the base end side of the faucet and the drain pipe by the discharge pressure when the generated water is drained, and closes when this discharge pressure is deenergized. Is provided.

[0014]

With the above structure, when electrolysis is started and the strongly acidic water generated on the anode chamber side is discharged to the drain pipe, the check valve provided at the connecting portion is opened by the discharge pressure. Along with this, strongly acidic water is discharged from the faucet. On the other hand, when the electrolysis is completed and the discharge of the strongly acidic water from the electrolytic cell to the drain pipe is stopped, the check valve is closed due to the depressurization of the discharge pressure. Since this check valve is provided at the connecting portion between the base end side of the faucet and the drain pipe, the invasion of outside air into the drain pipe is blocked. Therefore, the inside of the drainage pipe is filled with strongly acidic water, the inner wall of the pipe is prevented from coming into contact with air, and when the discharge is started again, the distance from the check valve to the faucet is simply fed to the faucet. Strongly acidic water is discharged.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view showing the overall configuration of a strongly acidic water generator according to the present invention.

In this strongly acidic water producing apparatus, the apparatus body 1 is provided with a mixed solution storage tank 20, a metering pulse pump 22, and an electrolytic cell 2.
5, an electrolysis power source 30, a generated water storage tank 36, a generated water discharge pump 38, a control unit, and other main parts are accommodated, and electrolyzes mixed water obtained by adding salt water to tap water to have excellent sterilizing power. It produces strongly acidic water and is used as a sterilizing solution for Vibrio parahaemolyticus, resistant staphylococcus (MRSA), and the like.

The apparatus main body 1 is a vertically long box type, and is entirely covered with a panel, and is movable by a roller 1f attached to a bottom portion 1e. This device main body 1 projects each end 12a, 35a of the water supply pipe 12 and the external drainage pipe 35 from the back surface 1b, and can be connected to the water pipe and the drainage pipe of the building at the installation position of the device main body 1, respectively. ing.

The apparatus main body 1 is provided with a hand washing stand 3 on the front surface 1a, and a tank accommodating port 6 is provided on the upper side 1c side of the hand washing stand 3. The tank accommodating port 6 is for inserting and removing the mixed liquid storage tank 20, and is provided with an opening / closing lid.

Further, two faucets 7, 8 are attached to the upper portion 1c side of the apparatus main body 1, and a faucet 9, a push button switch 10, a foot switch 11 and the like are provided on the lower portion 1d side. The push button switch 10 outputs an operation signal for discharging strongly acidic water by pressing operation and outputs a discharge stop signal by re-operation. Further, the foot switch 11 is configured to output an operation signal for discharging the strongly acidic water by a stepping operation and return to a fixed position to output a discharge stop signal when the stepping is stopped.

Of the faucets 7 to 9, the first faucet 7 is for discharging strongly acidic water, and the second faucet 8 is for discharging alkaline ionized water, and is mounted toward the hand washing stand 3. Also,
The third faucet 9 is for discharging strongly acidic water different from the first faucet 7, and is placed at a height such that a bucket or the like can be placed on the floor surface to take in the strongly acidic water.

The first faucet 7 and the third faucet 9 are each provided with a check valve 4, the first faucet 7 being operated by a foot switch 11, and the third faucet 9 being a push button. The strongly acidic water is discharged by operating the switch 10.

The check valve 4 is a base end side 7a of the faucet 7, 9 which is a connecting portion between the faucet 7, 9 and the drain pipes 61, 62.
9a, respectively. Explaining the first faucet 7, as shown in FIG. 2, the proximal end side 7a forms a different diameter portion 7c with its inner peripheral surface larger than the inner diameter of the distal end side 7b, and the different diameter portion 7c is formed. While the check valve 4 and the connecting tool 5 are fitted to each other, a female screw 7e is formed on the outer peripheral surface thereof so that the fastening member 52 of the connecting tool 5 can be screwed.

The check valve 4 includes a valve body 43 and a spring body 44 between a cylinder body 41 and a valve seat 42 accommodated in the different diameter portion 7c.
It is configured to interpose. The cylindrical body 41 is provided with a small hole 41a at its tip and a large-diameter opening 41b at its base. Further, the outer diameter of the cylindrical body 41 is slightly smaller than the inner diameter of the different diameter portion 7c, and the distal end portion is fitted from the opening on the base end side 7a and is held at the position where it abuts the step 7d.

The valve seat 42 has a small through hole 42a formed in the center thereof, and both side surfaces thereof are flat. The outer diameter is the cylindrical body 41.
After the valve body 43 and the spring body 44 are inserted, the valve body 43 and the spring body 44 are inserted through the opening on the base end side 7a, and fixed at a position where they are in contact with the end edge of the tubular body 41 on the opening 41b side.

The valve body 43 comprises a head portion 43a and a shaft portion 43b, and the shaft portion 43b is loosely inserted into the small hole 41a of the cylindrical body 41. The head 43a has an outer diameter smaller than the inner diameter of the tubular body 41, and a contact surface 43c facing one side surface 42b of the valve seat 42 is flat.
When the contact surface 43c comes into contact with 2, the through small hole 42a is closed, and the circulation of strong acidic water and the invasion of outside air can be blocked.

One end of the spring body 44 is locked in the tip end portion of the tubular body 41, and the other end is locked to the head portion 43a of the valve body 43.
Against the pressing force. This pressing force is smaller than the discharge pressure of the discharge pump 38 when draining the strong acid water, and when the discharge pressure is deactivated when the drainage of the strong acid water is stopped, the head portion 43a can be pressed against the valve seat 42. Has been done.

The connector 5 comprises a connector body 51 and a fastening member 52, and is made of a synthetic resin material or the like. The connector main body 51 has an outer diameter on the distal end side 51a slightly smaller than the inner diameter of the different diameter portion 7c, and has a locking groove 51c on the proximal end side 51b. Further, the fastening member 52 has a male screw 52 on the inner peripheral surface.
a is engraved, and the connector main body 5 is provided through the locking groove 51c.
1 is inserted into the female screw 7e of the faucet 7.

However, when the faucet 7 is attached to the apparatus main body 1 by the connecting tool 5, the decorative ring 53 is passed through the female screw 7e on the base end side 7a and is inserted into the opening formed in the panel of the front face 1a. To do. Then, after the distal end side 51a of the connector main body 51 is fitted and held on the proximal end side 7a protruding inside the apparatus main body 1, the male screw 52a is screwed into the female screw 7e to be fixed. Then, the end 61a of the drainage pipe 61 is inserted into the locking groove 51c and locked, and the outer peripheral surface of the end 61a is tightly fixed by binding with the band 54.

The water supply pipe 12 is an introduction path for tap water, and is connected to a flow meter 16 via an electromagnetic water supply valve 13, a pressure reducing valve 14 and a constant flow valve 15. The electromagnetic water supply valve 1
3 opens and closes in response to an on / off signal from the control unit to stop or supply tap water. Flow meter 1
At the outlet side of 6, the mixer 17 and the mixed liquid storage tank 2
A discharge pipe 24 from 0 is connected via a check valve 23. The outlet side of the mixer 17 is connected to the electrolytic cell 25 via a pre-stage conductivity meter 18 and a thermometer 19.

The mixed solution storage tank 20 stores a high-concentration saline solution necessary for producing strongly acidic water,
The salt water is supplied to the mixer 17 by the constant pulse pump 22 to be mixed with tap water.

The electrolytic cell 25 comprises an anode chamber 25a and a cathode chamber 25b separated by a diaphragm 26. An anode 27 is arranged in the anode chamber 25a, and a cathode 28 is arranged opposite to the cathode chamber 25b. There is. A DC voltage from an electrolysis power source is applied to both electrodes 27 and 28. Electrolyzer 25
Tap water or mixed water is introduced to the lower side of the
The strongly acidic water generated in a is the drain pipe 29 on the side of the anode chamber 25a.
Meanwhile, the strongly acidic water generated in the cathode chamber 25b is drained from the drain pipe 29 on the anode chamber 25a side.

The drain pipe 29 has a first three-way valve 31
A second three-way valve 32 is connected to each drain pipe 30. The outlet side of the first three-way valve 31 has a post-stage conductivity meter 34.
Connected to the third three-way valve 33 via the second three-way valve 3
2 is connected to the external drain pipe 35. In addition, the third three-way valve 33 has one of the outlet sides on the outside drain pipe 3
5 and the other outlet side extends to the produced water storage tank 36.

Incidentally, these first to third three-way valves 31, 3
2 and 33 are usually alkaline ionized water for the second three-way valve 3
After leading from 2 to the second faucet 8, the drain 3a of the washbasin 3
It becomes a flow path for discharging the strongly acidic water to the generated water storage tank 36 through the first three-way valve 31, the second-stage conductivity meter 34 and the third three-way valve 33 for discharging the strongly acidic water. There is.

The produced water storage tank 36 is provided with a liquid amount detection sensor and a discharge pump 38. The discharge pump 38 has a suction side on which the generated water storage tank 36 is provided.
It extends inward and is connected on the discharge side to a drain pipe 60 to the faucets 7, 9. The drain pipe 60 is branched midway, one branch pipe 61 is connected to the first faucet 7 via the electromagnetic valve 39, and the other branch pipe 62 is connected to the third faucet via the electromagnetic valve 40. 9 are connected respectively.

Solenoid valves 39, 40 of the respective branch pipes 61, 62
Is turned on / off in response to a control signal from the control section, and one solenoid valve 39 is opened when the foot switch 11 is stepped on to discharge strongly acidic water from the first faucet 7. Further, the other solenoid valve 40 is configured to open when the push button switch 10 is pressed to discharge the strongly acidic water from the third faucet 9. The solenoid valves 39 and 40 are closed based on the discharge stop signal from the switches 10 and 11.

The control section is a microcomputer having a CPU and a memory, which controls the operation of the entire apparatus and is generated by an operation signal sent from the push button switch 10 or the foot switch 11 after the main power is turned on. Perform an action.

Next, the operation of the above strongly acidic water generator will be described. When the user steps on the foot switch 11, first, the control unit turns on the electromagnetic water supply valve 13 to start the introduction of tap water, and the fixed pulse pump 22 brings the salt water in the mixed solution storage tank 20 to the mixer 17 side. Water is added and added to tap water. Next, an electrolytic voltage is supplied to the electrolytic cell 25 to electrolyze the mixed water.

As a result, the strongly acidic water produced in the anode chamber 25a is discharged to the first three-way valve 31 side and stored in the produced water storage tank 36 via the third three-way valve 33. The alkaline ionized water generated on the cathode chamber 25b side is
It is guided to the second faucet 8 of the hand wash stand 3 and drained from the drain port 3 a to the outside of the apparatus main body 1 through the external drain pipe 35.

Subsequently, the control unit causes the discharge pump 38.
Is activated and the solenoid valve 39 is turned on to open the valve. Then, the valve body 43 of the check valve 4 moves toward the tip side 7b of the faucet 7 by the discharge pressure of the discharge pump 38 to open the valve (direction of arrow A in FIG. 2). With this,
The strongly acidic water flows from the discharge pipe 60 through the discharge pipe 61 into the through small hole 42a of the valve seat 42, passes through the gap formed in the tubular body 41, flows from the small hole 41a to the tip side 7b of the faucet 7, and discharges water. To be done.

Thereafter, when the foot switch 11 is operated again, the discharge pump 38 is stopped and the solenoid valve 39 is turned off to close the valve. Then, the discharge pressure is deenergized, and the valve body 43 is pushed by the pressing force of the spring body 44.
a toward the a (direction of the arrow B in FIG. 2), and the through small hole 42a.
And close the valve.

At this time, the head 43 of the valve body 43 is attached to the valve seat 42.
When a is pressed and the flow of the strongly acidic water is stopped, the outside air is blocked from entering from the tip side 7b of the faucet 7 toward the drain pipe 61 side. Therefore, the inside of the drainage pipe 61 is filled with the strongly acidic water, the problem that the inner wall of the pipe contacts the air is avoided, and the rusting of the inner wall of the pipe due to oxidation is prevented. Although the faucet 7 has been described in detail in the above description of the operation, the same applies to the faucet 9 and the drain pipe 61.
Of course, rusting inside is prevented.

The solenoid valves 39 and 40 and the discharge pump 38
And the discharge pump 38 and the produced water storage tank 36
Since the strongly acidic water remains in a filled state even when the discharge of the strongly acidic water is stopped, the inner wall of the tube is in contact with air. There is no rust on the inner wall of the pipe. Also,
Since the outside air does not enter the drain pipe 61, the problem of so-called air entrainment occurring when the discharge pump 38 starts and stops, is avoided.
There is also an advantage that the problem of being inoperable when restarting after being stopped can be avoided.

In the above embodiment, the produced water storage tank 3 is used.
The case where the strongly acidic water stored in No. 6 is discharged by the discharge pump 38 has been described.
It can also be applied to a conventional strongly acidic water generator that directly supplies water from the 5a side to a faucet through a drainage pipe. In this case, the check valve 4 is also closed when the water supply valve that controls the supply of tap water is closed.
Invasion of outside air into the drain pipe connecting the electrolytic bath 25 and the faucet is blocked, the problem of the inner wall of the pipe coming into contact with air is avoided, and rusting of the inner wall of the pipe due to oxidation is prevented.

In the above strongly acidic water generator, tap water has a pH of
Around 7 and water with a residual chlorine of 0.3 to 0.8 ppm is strongly acidic water pH 2 to 3, redox potential 900 to 1
Water with 400 mV and 20-50 ppm residual chlorine can be produced.

[0045]

EFFECT OF THE INVENTION In the strongly acidic water generator of the present invention, the discharge of the strongly acidic water from the electrolytic cell to the drainage pipe is stopped by the end of electrolysis, and the discharge pressure is deactivated, and the strong acid water is connected to the faucet. Since the check valve provided is closed, it is possible to prevent the outside air from entering the drain pipe and prevent the inner wall of the pipe from rusting due to contact with air. Therefore, there is an effect that it is possible to avoid deterioration of the drainage pipe that constantly circulates the strongly acidic water and to maintain a long life.
Further, since the drainage pipe inside the check valve contains strong acid water, when the drainage is restarted, it can be drained from the faucet by sending strong acid water from the check valve to the faucet.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a strongly acidic water generator according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing the overall structure of a check valve for a faucet.

[Explanation of symbols]

 4 Check valve 7,9 Faucet 7a, 9a Base end 25 Electrolyzer 61,62 Drain pipe

Claims (1)

[Claims] 1. An electrolytic solution is mixed with raw water to be introduced into an electrolytic cell in which an electrolytic diaphragm is arranged between a positive electrode and a negative electrode, and the mixed water is electrolyzed by applying an electrolytic voltage to the both electrodes. In a strongly acidic water generator that generates strongly acidic water on the side of an anode chamber that houses the positive electrode and discharges the generated water from a faucet through a drain pipe, a connecting portion between the proximal end side of the faucet and the drain pipe. A strongly acidic water producing apparatus having a check valve for a faucet, which is provided with a check valve which is opened by a discharge pressure when the generated water is drained and which is closed when the generated pressure is deenergized.