JP2002186968A - Device for removal of floating matter in brine tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for removal of floating matter in a brine tank capable of reducing work for washing the brine tank and of preventing malfunction of sensors, or the like, by inhibiting formation of the floating matter. SOLUTION: This device comprises a brine tank 1 charged with common salt, a water supplying channel 7 to supply water to the brine tank 1, and a floating matter inhibiting means 17, 19 disposed within the water supplying channel 7 for inhibiting formation of the floating matter and/or for removal of the same.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for removing suspended matter from a salt water tank, and more particularly to a device for removing a suspended matter from a salt water tank which can suppress the malfunction of a sensor or the like by suppressing the generation of the suspended matter and can minimize the trouble of cleaning the salt water tank. It relates to a removing device.

[0002]

2. Description of the Related Art When raw water such as tap water is used without treatment and a saline solution is prepared, a trace amount of brown suspended matter may be generated depending on water quality. When this saline solution is stored in the salt water tank, the suspended matter adheres to the wall surface of the tank, so that it is unsanitary and must be cleaned regularly.

[0003] Generally, a salt water tank used in a device for generating hypochlorous acid by electrolyzing raw water such as tap water to which a saline solution has been added is provided with a function of automatically preparing a fixed concentration of salt water. Is added, and a system is adopted in which salt and tap water are added little by little according to the use of saline. Therefore, the suspended matter tends to gradually accumulate in the salt water tank.

[0004] In particular, this phenomenon was remarkable in a so-called saturated salt water tank in which tap water was allowed to pass through a salt layer having a certain thickness or more to obtain a salt solution having a substantially saturated concentration.

[0005]

When such a suspended matter is generated in the saturated salt water tank, it is necessary to remove all the salt in the tank once and then to wash the suspended matter. There is.

[0006] However, the salt layer formed in the saturated salt water tank is rather hard and generally difficult to remove from the saturated salt water tank. Therefore, when such suspended matter is generated in the saturated salt water tank, removal of the suspended matter requires much labor.

In addition, such suspended matter adheres not only to the problem of hygiene but also to a float sensor or an optical sensor for detecting a liquid level and the like, causing a malfunction and causing a problem. .

SUMMARY OF THE INVENTION The present invention has been made in view of such conventional problems, and it is possible to prevent the malfunction of a sensor or the like by suppressing the generation of a floating substance and to reduce the trouble of cleaning the salt water tank as much as possible. It is an object to provide a removal device.

[0009]

SUMMARY OF THE INVENTION Therefore, the present invention (claim 1) provides a salt water tank filled with salt, a water supply channel for supplying water to the salt water tank, and a water supply channel disposed in the water supply channel for removing suspended matter. And a suspended matter suppressing means for preventing removal and / or generation of the suspended matter.

[0010] A suspended matter suppression means is provided in the water supply channel to remove suspended matter and / or prevent the occurrence of suspended matter.

As a result, the suspended matter is blocked by the suspended matter suppressing means and does not flow into the salt water tank. Therefore, the labor of cleaning the salt water tank can be reduced as much as possible. In addition, adhesion of suspended matter to a position sensor or the like provided in the salt water tank is reduced, which leads to prevention of malfunction.

Further, the present invention (claim 2) is characterized in that the suspended matter suppressing means has a function of removing iron and / or manganese.

Tap water contains trace amounts of iron ions and manganese ions in addition to iron or manganese compounds such as iron rust and iron powder in pipelines. These are considered to form suspended matter such as iron oxide when oxidized in salt water. For this reason, the suspended matter suppressing means has a function of removing iron and / or manganese.

Further, the present invention (claim 3) is characterized in that filtration means is used for removing the suspended matter.

As the filtering means, a filter is preferably used. Specific examples include a wound filter, a membrane filter, an ultra filter, and a reverse osmosis membrane. When the pore size of the filter medium in the filtration means is 150 μm or less, it is preferable because the removal rate is high. More preferably, the pore size of the filter medium is 0.005 to 10 μm. The suspended matter is filtered by the filtering means.

Further, the present invention (claim 4) is characterized in that an ion-adsorbing means using an ion-exchange resin is used for preventing the generation of the suspended matter.

As the ion adsorption means, a water softener or a pure water purifier can be used. Iron ions, manganese ions and the like are adsorbed by the ion adsorption means.

Further, the present invention (claim 5) is characterized in that an oxidizing means and a filtering means are used for removing the suspended matter, and the filtering means is provided downstream of the oxidizing means. .

As the oxidizing means, it is possible to add an oxidizing agent such as sodium hypochlorite, ozone, hydrogen peroxide, etc., to filter by a catalytic oxidizing filter, to oxidize by ultraviolet rays, and the like. Oxides
It is removed by a filtering means provided on the downstream side.

Further, the present invention (claim 6) comprises a sodium hypochlorite producing means for producing sodium hypochlorite by electrolysis based on the salt water in the salt water tank, and the oxidizing means comprises: It is characterized in that sodium hypochlorite produced by the sodium hypochlorite producing means is used.

The produced sodium hypochlorite is used as an oxidizing agent for removing suspended matters, and can also sterilize a salt water tank.

[0022]

Embodiments of the present invention will be described below. FIG. 1 shows a configuration diagram of the first embodiment of the present invention. In FIG. 1, the inside of the salt water tank 1 is vertically partitioned by a partition member 3, and a salt 5 is placed on the partition member 3. The partition member 3 is formed of a net, a perforated plate, or the like, and can hold the salt 5 without obstructing the flow of water.

A raw water channel 7 is provided in the salt water tank 1, and tap water as raw water 9 is supplied through the raw water channel 7. The salt 5 is dissolved in the raw water 9 supplied at a constant water level, becomes a salt water having a specified concentration, that is, a high concentration near saturation, and is stored in the salt water layer 11.

The salt water stored in the salt water layer 11 is sucked by the pump 15 or the like through the lead-out passage 13 and is sent to the use point. In the middle of the raw water channel 7, a filter 17 and an ion exchange resin tower 19 such as a water softener and a pure water production device are installed.

Next, the operation of the first embodiment of the present invention will be described. Tap water contains trace amounts of iron ions and manganese ions in addition to iron or manganese compounds such as iron rust and iron powder in pipelines.

These form suspended matters such as iron oxide when oxidized in salt water. Therefore, in the middle of the raw water channel 7,
A filter 17 is provided to remove the suspended matter. In addition, the installation of the ion exchange resin tower 19 can prevent the generation of suspended matters such as iron oxide.

As described above, it is possible to suppress the generation of suspended matter and the like, and it is possible to reduce the time and effort for cleaning the salt water tank 1 as much as possible. In addition, adhesion of suspended matter to a position sensor or the like provided to keep the water level of the salt water tank 1 constant is reduced, which leads to prevention of malfunction of the position sensor and the like.

Next, a second embodiment of the present invention will be described. FIG. 2 shows a configuration diagram of the second embodiment of the present invention. The same elements as those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted. FIG. 2 shows a sodium hypochlorite generator 20 to which the salt water tank 1 and the pump 15 of FIG. 1 are applied. The sodium hypochlorite generator 20 is an apparatus that electrolyzes raw water to which salt is added to generate sodium hypochlorite.

The raw water introduction channel 21 is branched into a branch channel 23 and a branch channel 25. A branch orifice 23 is provided with a restriction orifice 27, while a branch orifice 25 is provided with a restriction orifice 29.

The flow rates flowing into the branch water channel 23 and the branch water channel 25 are determined by the restriction orifices 27 and 29. Raw water having passed through the restriction orifice 29 is supplied to the electrolytic cell 31. Further, a saline solution is added to the branch water channel 25 by the pump 15 so as to have a constant concentration.

In the electrolytic cell 31, an electrolysis reaction is carried out by a DC current extremely supplied from a DC power supply 33, so that sodium hypochlorite is generated. The generated sodium hypochlorite is merged with the branch water channel 23, diluted to a predetermined concentration, and stored in the hypochlorous acid tank 35.

However, if there is no need to dilute the produced sodium hypochlorite in the electrolytic cell 31, the branch water channel 23 can be omitted. The liquid is sent from the hypochlorous acid tank 35 to the use point by the pump 37, and a part thereof is returned to the return pipe 39.
Is supplied to the salt water tank 1 via the
A filter 17 is provided in the middle of the return pipe 39, and raw water is partially supplied to the primary side of the filter 17 from the introduction water channel 21.

Next, the operation of the second embodiment of the present invention will be described. Generally, the salt water tank 1 is kept at a constant water level.
In the first embodiment of the present invention, water supply for this is performed directly using raw water such as tap water.

However, in the second embodiment of the present invention, the sodium hypochlorite generated in the electrolytic cell 31 is injected into the raw water through the return pipe 39 and supplied to the salt water tank 1. Iron, manganese, etc. are oxidized by sodium hypochlorite and precipitate as suspended matter. And
This suspended matter is removed by the filter 17.

As described above, the same effects as in the first embodiment of the present invention can be obtained. In addition to the function of suppressing the generation of suspended matter by removing iron and removing manganese, sterilization in the salt water tank 1 can be performed by using sodium hypochlorite. Further, since the sodium chlorite generated by the sodium hypochlorite generator 20 is used as the oxidizing agent, it is efficient.

The sodium hypochlorite to be injected does not need to be obtained by the electrolysis reaction as in the second embodiment of the present invention. Is also good.

[0037]

As described above, according to the present invention, since the suspended matter suppressing means is provided in the water supply channel, the suspended matter is prevented by the suspended matter suppressing means and does not flow into the salt water tank. Therefore, the labor of cleaning the salt water tank can be reduced as much as possible.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a first embodiment of the present invention.

FIG. 2 is a configuration diagram of a second embodiment of the present invention.

[Description of Signs] 1 Salt water tank 3 Partition wall member 5 Salt 7 Raw water channel 9 Raw water 11 Salt water layer 13 Outgoing channel 15, 37 Pump 17 Filter 19 Ion exchange resin tower 20 Sodium hypochlorite generator 21 Inlet channel 23, 25 Branch Waterways 27, 29 Restricted orifice 31 Electrolyzer 33 DC power supply 35 Hypochlorous acid tank 39 Return pipe

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) C02F 1/50 531 C02F 1/50 531P 550 550H 560 560F 560Z 1/72 1/72 Z 1/76 1 / 76 A F term (reference) 4D006 GA03 GA06 KA01 KA72 KB01 KB11 KB30 4D025 AA01 BA07 DA06 DA08 DA10 4D050 AA04 AB06 BB02 BB06 BB09 BC04 BC09 CA08 CA10 CA12 CA15 4D061 DA03 DB10 EA02 EB01 EB04 ED13

Claims (6)

[Claims] A salt water tank filled with salt, a water supply channel for supplying water to the salt water tank, and a water supply channel provided in the water supply channel;
An apparatus for removing suspended matter in a salt water tank, comprising: a suspended matter suppressing means for removing suspended matter and / or preventing generation of the suspended matter. 2. The apparatus for removing suspended matter in a salt water tank according to claim 1, wherein said suspended matter suppressing means has a function of removing iron and / or manganese. 3. The apparatus for removing suspended matter in a salt water tank according to claim 1, wherein a filter is used for removing the suspended matter. 4. The apparatus for removing suspended matter in a salt water tank according to claim 1, wherein an ion-adsorbing means using an ion exchange resin is used to prevent the generation of the suspended matter. 5. The removal of suspended matter in a salt water tank according to claim 1, wherein an oxidizing means and a filtering means are used for removing the suspended matter, and the filtering means is disposed downstream of the oxidizing means. apparatus. 6. A sodium hypochlorite generating means for generating sodium hypochlorite by electrolysis based on salt water in the salt water tank, wherein the oxidizing means includes a sodium hypochlorite generating means. The apparatus for removing suspended matter in a salt water tank according to claim 5, wherein the generated sodium hypochlorite is used.