JPH07216573A - Sodium hypochlorite forming device - Google Patents

Abstract

PURPOSE:To provide a sodium hypochlorite forming device capable of preventing the accidents such as the damage to a gas dilution fan and the resulting ignition of gaseous hydrogen by rapidly discharging a sodium hypochlorite soln. from the fan even when the soln. is injected from a gas-liq. separator and introduced into the fan. CONSTITUTION:An electrolytic cell for electrolyzing a dil. brine to form a sodium hypochlorite soln. is provided in the main body 1 of the device, a gas-liq. separator for separating the gaseous hydrogen generated in the cell during electrolysis and a fan 15 for diluting the gaseous hydrogen separated in the separator and discharging the hydrogen are furnished, a drain pan 9 is provided in the main body 1 below the cell, and a drain pipe 45 is set at the bottom of the fan 15 to introduce the sodium hypochlorite soln. leaked in the fan 15 into the pan 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sodium hypochlorite generator for use in disinfecting waterworks.

[0002]

2. Description of the Related Art As a sodium hypochlorite generator used for disinfecting waterworks, water supply facility design guidelines and explanations (19
90) (published by the Japan Water Works Association), page 253, the saline solution from the salt dissolving tank is diluted with the diluting water from the diluting water tank, and the diluted saline solution is electrolyzed in an electrolytic cell to Generates sodium chlorate liquid, stores the sodium hypochlorite liquid in a liquid storage tank, separates the hydrogen gas generated in the electrolytic cell during electrolysis into a gas-liquid separator, and then air from a gas dilution fan. It has been widely known in the past that it is diluted with and released to the atmosphere.

[0003]

When dilute saline is electrolyzed in the electrolytic cell to produce sodium hypochlorite solution, the hydrogen gas generated in the electrolytic cell is generated by the gas-liquid separator as described above. After gas-liquid separation from the sodium hypochlorite solution, it is diluted with air from a gas dilution fan and released into the atmosphere. But,
Sodium hypochlorite liquid is ejected from the gas-liquid separator together with hydrogen gas due to sudden pressure fluctuation of hydrogen gas in the gas-liquid separator, deterioration of separation efficiency of the gas-liquid separator, failure of the gas-liquid separator, etc. I have something to do.

At this time, if the ejection amount of the sodium hypochlorite solution is extremely small, it is possible to release it to the atmosphere by a large amount of air from the gas dilution fan. When the ejection amount is large, the sodium hypochlorite liquid may enter the gas dilution fan against the flow of air, and a large amount of the sodium hypochlorite liquid may accumulate at the bottom of the fan case. Then, if the sodium hypochlorite solution accumulates in the fan case, it causes metal corrosion of the scan case, damages the gas dilution fan, and hydrogen gas cannot be diluted.
Hydrogen gas may ignite.

In view of the above conventional problems, the present invention provides a gas diluting fan for the sodium hypochlorite solution even when the sodium hypochlorite solution is ejected from the gas-liquid separator and enters the gas dilution fan. Can be promptly discharged, and the accident such as damage to the gas dilution fan and the accompanying ignition of hydrogen gas can be prevented, and the pollution of the vicinity of the device due to the discharged sodium hypochlorite solution can be prevented. The present invention provides a sodium hypochlorite generation device that can be used.

[0006]

According to the present invention as set forth in claim 1, an electrolysis tank 8 for electrolyzing a dilute saline solution to produce a sodium hypochlorite solution is provided in the apparatus main body 1, and the electrolysis tank is used during electrolysis. Hypochlorous acid provided with a gas-liquid separator 13 for gas-liquid separating the hydrogen gas generated in 8 and a gas dilution fan 15 for diluting and releasing the hydrogen gas separated by the gas-liquid separator 13 In the soda generator, a drain pan 9 is provided below the electrolytic cell 8 and inside the apparatus main body 1, and the sodium hypochlorite liquid leaking into the gas dilution fan 15 is placed in the drain pan 9 at the bottom of the gas dilution fan 15. A drain pipe 45 for guiding is provided.

According to a second aspect of the present invention, in the invention according to the first aspect, the gas dilution fan 15 is mounted on the outside of the apparatus main body 1, and a gas discharge cylinder is provided on the blower port 38 of the gas dilution fan 15. 14 is provided, and a gas discharge pipe 31 from the gas-liquid separator 13 is connected to the gas discharge cylinder 14.

According to a third aspect of the present invention, in addition to the first or second aspect of the present invention, a liquid level gauge 47 is provided for detecting and alarming the liquid level in the drain pan 9.

[0009]

According to the present invention as set forth in claim 1, even when the sodium hypochlorite solution is jetted from the gas-liquid separator 13 and enters the gas dilution fan 15, the sodium hypochlorite solution is diluted with the gas. It can be quickly discharged from the fan 15 to the drain pan 9 through the drain pipe 45. Therefore, a large amount of sodium hypochlorite solution is not accumulated in the gas dilution fan 15, and it is possible to prevent damage to the gas dilution fan 15 and accidents such as ignition of hydrogen gas. . Moreover, since the sodium hypochlorite solution is discharged to the drain pan 9 in the apparatus main body 1, the vicinity of the apparatus is not contaminated by the sodium hypochlorite solution ejected from the gas-liquid separator 13.

According to the second aspect of the present invention, the gas dilution fan 15 is attached to the outside of the main body 1 of the apparatus, the gas discharge cylinder 14 is provided on the blower port 38 of the gas dilution fan 15, and the gas discharge cylinder 14 is provided. Since the gas discharge pipe 31 from the gas-liquid separator 13 is connected to, the gas dilution fan 15 and the gas discharge cylinder 14 can be installed integrally with the device body 1, and at the same time, the structure of the entire device 1 can be simplified.

In the present invention according to claim 3, the drain pan is provided.
Since a level gauge 47 is installed to detect the level in 9 and give an alarm, when the sodium hypochlorite solution accumulates in the drain pan 9, the level gauge 47 will promptly notify the operator and take prompt action. Can be taken.

[0012]

Embodiments of the present invention will now be described in detail with reference to the drawings. 1 shows the structure of the gas dilution part, FIGS. 2 to 5 show the appearance of the sodium hypochlorite generator, FIG. 6 shows the internal structure of the lower side of the sodium hypochlorite generator, and FIG. Shows the connection relationship of the entire sodium hypochlorite generator, and FIG.
Shows the connection structure of the main electrolytic cell.

In FIGS. 2 to 5, reference numeral 1 denotes a box-shaped device body, and the inside of the device body 1 is divided into upper and lower tiers, and a pair of upper and lower doors 2, 3 are provided on the front side thereof. There is. Various control devices such as a rectifier and a control panel are installed in the upper stage of the device body 1, and various instruments 4 are installed in the upper opening / closing door 2.

As shown in FIG. 6, an upper frame 5 and a lower frame 6 are provided on the lower side of the main body 1 of the apparatus, respectively.
Two main electrolyzers 8 are placed on each of the left and right via a pair of left and right guide rails 7. Each guide rail 7 is L
The angle-shaped member is formed on the frames 5 and 6 in the front-rear direction, and each main electrolytic cell 8 is mounted on the pair of guide rails 7 so as to be freely inserted and removed from the front.

A drain pan 9 is attached to the lower end of the apparatus main body 1 over the entire bottom surface thereof, and a drain pit 10 is formed in the drain pan 9. A diluted saline supply pipe 11 and a pre-electrolysis tank 12 are arranged near one side outside the apparatus main body 1, and a gas-liquid separator 13, a gas discharge cylinder 14 and a gas dilution fan 15 are arranged on the other side. It is arranged. Diluted saline supply pipe 11
Is for supplying diluted salt solution to the main electrolytic cell 8, and a concentrated salt water supply pipe 16 and a diluted water supply pipe 17 are connected on the upstream side.
A flow rate instruction adjustment alarm meter 18 is provided in the middle of the dilution water supply pipe 17.

As shown in FIG. 7, the concentrated salt water supply pipe 16 is used as a concentrated salt water source 19 for feeding concentrated salt water to the diluted salt water supply pipe 11, and the diluted water supply pipe 17 is used as the diluted salt water supply pipe 11. Are respectively connected to a diluting water source 20 for pumping. Diluted saline supply pipe 11
A Y-type strainer 21 and a front electrolysis tank 12 having open / close valves 22 and 23 in front of and behind the Y-strainer 21 are connected in series on the downstream side of the confluence of the concentrated salt water supply pipe 16 and the diluted water supply pipe 17. In addition, a bypass passage 25 having an on-off valve 24 is connected so as to be in parallel with the front electrolysis tank 12 and the on-off valves 22 and 23 before and after it.

A hydrochloric acid supply pipe 27 having an opening / closing valve 26 is connected between the opening / closing valve 22 and the front electrolysis tank 12. Open / close valve
22,23,24 can be operated manually outside the main unit 1, and by opening and closing each on-off valve 22,23,24, the front electrolyzer
12 and the bypass passage 25 can be selectively switched.

The gas-liquid separator 13 is for separating the sodium hypochlorite solution generated by electrolysis in the main electrolysis tank 8 and the hydrogen gas generated during the electrolysis, and is located outside the apparatus main body 1. It is vertically arranged in the vicinity and is attached to the apparatus main body 1 via a bracket 28.

A gas pipe 29 and a liquid pipe 30 are connected to the upper and lower sides of the gas-liquid separator 13, and a gas discharge pipe 31 is provided at the upper end and a liquid take-out pipe 33 having an opening / closing valve 32 at the lower end. Each is connected. The liquid take-out pipe 33 is for pressure-feeding the sodium hypochlorite liquid from the gas-liquid separator 13 to the liquid storage tank 36 arranged at a high place, etc., and an opening / closing valve 34 is provided under the liquid take-out pipe 33. The hydrochloric acid discharge pipe 35 included therein is connected.

The gas discharge cylinder 14 is for diluting the hydrogen gas sent from the gas-liquid separator 13 with air and discharging it into the atmosphere through the opening 37 at the upper end. As shown in FIG. The fan 15 is vertically fixed to a blower port 38, and a gas discharge pipe 31 is connected to an upper side surface of the gas discharge cylinder 14.

The gas dilution fan 15 is for sending dilution air to the gas discharge cylinder 14, and as shown in FIG. 1, a fan case 39 to which the gas discharge cylinder 14 is fixed, and a fan case 39.
A drive motor 40 for driving a fan blade inside the unit is integrally provided, and a side wall of the apparatus main body 1 is mounted via a mounting base 41 and a base frame 42.
It is fixed at 43.

At the bottom of the fan case 39, as shown in FIG. 1, when the sodium hypochlorite solution is jetted from the gas discharge pipe 31 into the gas discharge tube 14, the sodium hypochlorite solution is drained from the drain pan 9 The connection pipe 44 and the drain pipe 45 are connected to each other so as to be pulled out, and the end portion of the drain pipe 45 is guided onto the drain pan 9 through an opening 46 formed in the lower portion of the side wall 43 of the apparatus main body 1. The drain pit 10 is provided with a liquid level gauge 47 that detects the liquid level in the drain pit 10 and issues an alarm.

Each main electrolytic cell 8 is for electrolyzing a dilute saline solution to produce a sodium hypochlorite solution. Each main electrolysis tank 8 is a closed internal pressure type and an up-down flow type self-gas-liquid separation type, and is configured as shown in FIGS. 7 and 8.

That is, each main electrolysis cell 8 has a box-shaped cell body 48 having an open upper side, a lid 49 detachably attached to the opening side of the cell body 48, and a plurality of cells in the cell body 48. A plurality of ascending passages 52 and descending passages 53 alternately formed by a plurality of lower partition plates 50 and upper partition plates 51, a plurality of electrode units 54 arranged in each ascending passage 52, and each ascending passage 52. A pair of front and rear cooling means 55 arranged on both sides of the electrode unit 54 inside
It has and. Each main electrolytic cell 8 is connected in series with each other by an upper gas layer pipe 73 and a lower liquid layer pipe 74.

As shown in FIG. 7, the cooling means 51 of each main electrolytic cell 8 has one end connected to a cooling water supply pipe 57 via an on-off valve 56 and the other end connected to a cooling water discharge pipe 58. Has been done. The cooling water supply pipe 57 is connected to a cooling water source 61 via a solenoid valve 59, an on-off valve 60, etc., and the cooling water discharge pipe 58 is connected to a cooling water tank 62.

The solenoid valve 59 has a signal from the operation panel,
Controlled by a signal from a temperature indicator / alarm 63 provided in the liquid pipe 30 between the main electrolyzer 8 at the final stage and the gas-liquid separator 13, the secondary side at the outlet side of the main electrolyzer 8 at the final stage In order to keep the temperature of the sodium chlorate solution within the range of 10 to 25 ° C., the opening / closing operation is performed so as to send the cooling water to the cooling means 55 of each main electrolytic cell 8.

The gas-liquid separator 13 has a lower lid as shown in FIG.
A cylindrical separator main body 65 having 64, an upper lid 68 detachably attached to the upper end of the separator main body 65 via a flange portion 66, and having a gas vent nozzle hole 67 in the center, and a separator main body. A hollow float 68 that is vertically movable in 65
And a support rod 69 fixed to the center of the upper end of the float 68,
A valve rod 70 pivotally attached to the upper end of the support rod 69, and the valve rod 70.
A valve body 71 for opening and closing a nozzle hole 67 fixed to the upper end of 70 is provided. The nozzle hole 67 and the valve body 71 form a gas vent valve 72.

A liquid pipe 30 and a liquid take-out pipe 33 are connected to the lower part of the separator main body 65, and a gas pipe 29 is connected to the upper part of the separator main body 65. Supply,
It is designed to supply hydrogen gas to the upper part. float
68 is a guide portion 73 that slides in the vertical direction along the inner wall of the separator body 65 so as to move up and down according to the change in the liquid level of the sodium hypochlorite liquid in the separator body 65. To have. A plurality of guide portions 73 are provided in the circumferential direction on the outer circumference of the separator body 65 at intervals. The gas discharge pipe 31 is connected to the upper lid 68 so as to communicate with the nozzle hole 67.

Next, the operation of this sodium hypochlorite generator will be described. When the sodium hypochlorite solution is generated, first, concentrated salt water is supplied from the concentrated salt water source 19 to the diluted salt water supply pipe 11 via the concentrated salt water supply pipe 16, and diluted from the dilution water source 20 via the dilution water supply pipe 17. Dilution water is supplied to the saline supply pipe 11. Then, the concentrated saline solution is diluted by the diluted water in the diluted saline supply pipe 11, and becomes a diluted saline solution having a concentration of about 3%.
Then, while the diluted saline is pumped at a predetermined pressure, the diluted saline supply pipe passes through the pre-electrolysis tank 12 or the bypass passage 25.
It is sequentially supplied to each main electrolysis tank 8 from 11.

When the diluted saline solution is passed through the pre-electrolysis tank 12 for electrolysis, the opening / closing valve 24 of the bypass passage 25 is closed, and the opening / closing valves 22 and 23 before and after the pre-electrolysis tank 12 are opened. Further, when not passing through the pre-electrolysis tank 12, by closing the opening / closing valves 22 and 23 at the front and rear of the pre-electrolysis tank 12 and opening the opening / closing valve 24 of the bypass passage 25, the diluted saline solution passes through the bypass passage 25 and It is supplied to the main electrolytic cell 8.

The diluted saline solution that has passed through the pre-electrolysis tank 12 or the bypass passage 25 is pressure-fed to each main electrolysis tank 8 in the apparatus main body 1 and is electrolyzed through each main electrolysis tank 8 in sequence. By this electrolysis, chlorine is generated at the anode and hydrogen gas is generated at the cathode. On the cathode side, sodium ions and hydroxide ions generate caustic soda, and chlorine generated at the anode and caustic soda generated at the cathode react with each other to generate sodium hypochlorite.

Since the diluted saline solution is electrolyzed in each main electrolytic cell 8 each time it passes through each main electrolytic cell 8, the concentration of sodium hypochlorite in the diluted saline solution is transferred to the main electrolytic cell 8 in the subsequent stage. The sodium hypochlorite solution has a predetermined concentration when it is taken out from the main electrolyzer 8 at the final stage.

The hydrogen gas generated by electrolysis in each main electrolyzer 8 rises in the dilute saline solution or sodium hypochlorite solution to separate into gas and liquid, and accumulates in the upper part of each device main body 1. As shown in FIG. 8, a hydrogen gas vapor layer A is formed in each main electrolytic cell 8. That is, in each main electrolytic cell 8, a gas layer A is formed on the upper side and a liquid layer B is formed on the lower side.

Then, a gas layer formed inside each main electrolytic cell 8
The hydrogen gas of A is an internal pressure type in which each main electrolyzer 8 is sealed, and the gas layer A side is connected in series by the gas layer piping 73 as shown in FIG. Hydrogen gas generated one after another is sequentially sent to the main electrolysis tank 8 side at the rear stage side, and then goes out from the main electrolysis tank 8 at the final stage side through the gas pipe 29 to the gas-liquid separator 13 side.

Hydrogen gas is sent to the upper side of the gas-liquid separator 13 from the final main electrolytic cell 8 through the gas pipe 29, and sodium hypochlorite liquid is sent to the lower side through the liquid pipe 30. ,
The gas-liquid separator 13 performs the final gas-liquid separation. That is,
In the gas-liquid separator 13, the float 68 in the separator body 65 receives the buoyancy of the sodium hypochlorite liquid to balance at a position slightly below the closed state shown in FIG. Hole
Hold 67 down. For this reason, the hydrogen gas that has entered the upper portion of the separator body 65 is stably ejected from the nozzle hole 67 in the throttled state, and is discharged to the gas discharge cylinder 14 via the gas discharge pipe 31.

In this case, the hydrogen gas has already been vapor-liquid separated in each of the main electrolytic cells 8 at the preceding stage, and the hydrogen gas after the vapor-liquid separation is extracted from the nozzle hole 67 of the gas-liquid separator 13. , Sodium hypochlorite liquid with hydrogen gas gas exhaust pipe
The risk of spouting to the 31st side is extremely low.

Further, even if the amount of hydrogen gas generated fluctuates, it is absorbed by the volume change of the gas layer A in each main electrolytic cell 8, so that the gas pressure in the gas-liquid separator 13 does not fluctuate. The hydrogen gas in the gas-liquid separator 13 can always be discharged from the nozzle hole 67 at a substantially constant pressure. Therefore, the gas-liquid separator 13
The valve body 71 no longer repeatedly vibrates in the vertical direction due to the pressure fluctuation of the hydrogen gas in the valve body 71 and the nozzle hole 67.
It is possible to prevent damage such as abrasion of the contact part with the gas-liquid separator 13
At the same time, the durability can be improved, and at the same time, generation of abnormal noise when hydrogen gas escapes can be prevented.

A very small amount of hydrogen gas is mixed into the sodium hypochlorite liquid entering the gas-liquid separator 13 in the form of bubbles, but this hydrogen gas is the sodium hypochlorite liquid separator. Body 65
While passing the lower part of the, it is separated into gas and liquid inside and goes upward. Therefore, hydrogen gas can be gas-liquid separated also in the gas-liquid separator 13.

Therefore, the sodium hypochlorite liquid that has passed through the gas-liquid separator 13 is in a state of containing almost no hydrogen gas, and this sodium hypochlorite liquid is taken out from the liquid take-out pipe 33 and It is pumped to the storage tank 36. The hydrogen gas discharged from the nozzle hole 67 of the gas-liquid separator 13 is sent to the gas discharge tube 14 via the gas discharge pipe 31, and then diluted by the air blown from the gas dilution fan 15 to generate hydrogen gas. The diluted gas having a low concentration is released from the gas release cylinder 14 upward into the atmosphere.

At this time, even if the sodium hypochlorite liquid spouts together with the hydrogen gas and enters the gas discharge cylinder 14, if the amount is extremely small, the gas dilution fan is used.
It can be released into the atmosphere by blowing air from 15. When the amount of sodium hypochlorite solution is large, it cannot be released to the atmosphere, and the sodium hypochlorite solution enters the fan case 39 of the gas dilution fan 15 through the gas release cylinder 14.

However, since the gas dilution fan 15 is fixed to the apparatus body 1 and the drain pipe 45 that connects the bottom of the fan case 39 of the gas dilution fan 15 and the drain pan 9 in the apparatus body 1 is provided, Even if the sodium hypochlorite solution enters 39, it can be discharged to the drain pan 9 in the apparatus main body 1 through the drain pipe 45.

Therefore, even if the sodium hypochlorite solution is ejected from the gas-liquid separator 13, the sodium hypochlorite solution will not be accumulated in the fan case 39. To prevent problems such as a large amount of sodium hypochlorite solution accumulating in 39 and causing metal corrosion, or hydrogen gas being unable to be diluted due to damage to the gas dilution fan 15 and causing ignition of hydrogen gas. You can

In addition, the sodium hypochlorite solution is a drain pipe 45.
Since it is guided to the drain pan 9 in the main body 1 of the apparatus through the above, there is an advantage that the vicinity of the apparatus can be prevented from being contaminated with the sodium hypochlorite solution. The drain pan 9 is originally designed for each main electrolytic cell.
The sodium hypochlorite solution discharged into the drain pan 9 is stored in the drain pit 10 together with the diluted saline solution leaked from each main electrolyzer 8 and is for receiving the diluted saline solution leaking from the tank 8. Then, when the liquid level in the drain pit 10 rises above a predetermined level, the liquid level gauge 47 operates and issues an alarm, so that the rise in the liquid level in the drain pit 10 can be known and prompt measures can be taken.

Structurally, the gas dilution fan 15 is mounted on the outside of the main body 1 of the apparatus, and the ventilation port of the gas dilution fan 15 is installed.
Since the gas discharge cylinder 14 is provided on the 38 and the gas discharge pipe 31 from the gas-liquid separator 13 is connected to the gas discharge cylinder 14, the gas dilution fan 15 and the gas discharge cylinder 14 are integrated with the apparatus main body 1. There is an advantage that the structure of the entire apparatus can be simplified while being installed.

In the embodiment, the case where four main electrolysis cells 8 are connected in series is illustrated, but the present invention is not limited to this, and two main electrolysis cells 8 may be arranged vertically. Good, one main electrolyzer 8 with the ability to match the electrolysis capacity of four
You only need to provide one. Further, the front electrolysis tank 12 may be omitted.

[0046]

According to the present invention as set forth in claim 1, an electrolyzer 8 for electrolyzing a dilute saline solution to generate a sodium hypochlorite solution is provided in the apparatus body 1, and the electrolyzer 8 is used during electrolysis. Sodium hypochlorite production provided with a gas-liquid separator 13 for gas-liquid separating generated hydrogen gas and a gas dilution fan 15 for diluting and releasing the hydrogen gas gas-liquid separated by the gas-liquid separator 13 In the device, a drain pan 9 is provided below the electrolysis tank 8 and inside the device body 1, and the sodium hypochlorite liquid leaking into the gas dilution fan 15 is drained to the bottom of the gas dilution fan 15.
Since the drain pipe 47 leading to the gas diluting fan 15 is provided, even if the sodium hypochlorite solution is jetted from the gas-liquid separator 13 and enters the gas dilution fan 15, the sodium hypochlorite solution is fed to the gas dilution fan.
It is possible to quickly discharge from the gas dilution fan 15, prevent accidents such as damage to the gas dilution fan 15 and the accompanying ignition of hydrogen gas, and further, the discharged sodium hypochlorite liquid causes pollution around the equipment. Can be prevented.

According to the second aspect of the present invention, the gas dilution fan 15 is mounted on the outside of the apparatus main body 1, and the gas discharge cylinder 14 is provided on the blower port 38 of the gas dilution fan 15 to discharge the gas. Since the gas discharge pipe 31 from the gas-liquid separator 13 is connected to the cylinder 14, the gas dilution fan 15 and the gas discharge cylinder 14 are connected to the apparatus main body.
It can be installed together with 1 and at the same time the entire device 1
The structure of can also be simplified.

According to the third aspect of the present invention, since the liquid level gauge 47 for detecting the liquid level in the drain pan 9 to give an alarm is provided, the sodium hypochlorite liquid is accumulated in the drain pan 9. Occasionally, the alarm of the liquid level gauge 47 will give immediate notice and prompt action can be taken.

[Brief description of drawings]

FIG. 1 is a partially cutaway rear view of a gas diluting portion illustrating an embodiment of the present invention.

FIG. 2 is a front view of an apparatus for producing sodium hypochlorite, which illustrates an embodiment of the present invention.

FIG. 3 is a left side view of a sodium hypochlorite generation device illustrating an embodiment of the present invention.

FIG. 4 is a rear view of the sodium hypochlorite generation device that illustrates one embodiment of the present invention.

FIG. 5 is a right side view of the sodium hypochlorite generation device illustrating one embodiment of the present invention.

FIG. 6 is a front view of the lower side of the sodium hypochlorite production apparatus that illustrates one embodiment of the present invention.

FIG. 7 is a configuration diagram of an apparatus for producing sodium hypochlorite, which illustrates an embodiment of the present invention.

FIG. 8 is a cross-sectional view of a main electrolytic cell and a gas-liquid separator that exemplifies an embodiment of the present invention.

[Explanation of symbols]

 1 Equipment main body 9 Drain pan 11 Diluted saline supply pipe 12 Preliminary electrolyzer 13 Gas-liquid separator 14 Gas discharge cylinder 15 Gas dilution fan 31 Gas pipe 45 Drain pipe 47 Liquid level meter

Claims (3)

[Claims] 1. An electrolysis cell (8) for electrolyzing a dilute saline solution to generate a sodium hypochlorite solution is provided in the main body (1) of the apparatus, and hydrogen gas generated in the electrolysis cell (8) during electrolysis is vaporized. Sodium hypochlorite production with a gas-liquid separator (13) for liquid-liquid separation and a gas dilution fan (15) for diluting and releasing the hydrogen gas gas-liquid separated by the gas-liquid separator (13) In the device, a drain pan (9) is provided below the electrolysis tank (8) and inside the device body (1), and at the bottom of the gas dilution fan (15), there is a leakage An apparatus for producing sodium hypochlorite, comprising a drain pipe (45) for guiding a sodium chlorate solution to a drain pan (9). 2. A gas dilution fan (15) is mounted on the outside of the main body (1) of the apparatus, and a gas discharge cylinder (14) is provided on the air outlet (38) of the gas dilution fan (15) to discharge the gas. The sodium hypochlorite generator according to claim 1, wherein a gas discharge pipe (31) from the gas-liquid separator 13 is connected to the cylinder (14). 3. The sodium hypochlorite production apparatus according to claim 1, further comprising a liquid level gauge (47) for detecting and alarming the liquid level in the drain pan (9).