JP3353984B2 - Electrolytic cell - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrolytic cell for electrolytically treating water to be treated.

[0002]

2. Description of the Related Art As one type of electrolytic cell, a casing having a pair of inflow ports below and a pair of outflow ports above, and a pair of reaction chambers in which the inflow port and the outflow port open inside the casing. An ion- permeable diaphragm that is divided into two chambers, and a pair of electrodes disposed in each of the reaction chambers and facing each other. There is an electrolyzer for electrolyzing the water to be treated flowing through each of the outlets, and is proposed in, for example, Japanese Patent Application Laid-Open No. 4-330987. An electrolytic cell employing a rectangular electrode plate as the electrode has been proposed in Japanese Patent Application Laid-Open No. 55-35906.

[0003]

In the above-mentioned conventional electrolytic cell, the water to be treated flowing from each inlet to each outlet through the space between both electrodes is electrolyzed between the electrodes. Instead, the configuration is such that the water to be treated flows substantially uniformly between the two electrodes, so that the water to be treated flows linearly from each inlet to each outlet, and a rectangular electrode plate is used as the electrode. However, there is a problem that the entire opposing surface does not function effectively and the electrolytic treatment efficiency is poor. In addition, since the water to be treated does not flow substantially uniformly, gas bubbles generated by the electrolytic treatment in places where the flow is poor are difficult to adhere to the electrode plate and are difficult to be discharged, and the electrolytic treatment efficiency is also deteriorated by the bubbles. There is. The present invention has been made to address the above-described problem, and an object of the present invention is to provide an electrolytic cell having high electrolytic treatment efficiency.

[0004]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention is directed to a pair of inflow ports located opposite each other.
A pair of flows located opposite to the lower part with the mouth
Vertically installed insulation with upper part with outlet
A casing, an ion-permeable diaphragm that bisects the inside of the casing into a pair of reaction chambers each having the inflow opening and the outflow opening, and is disposed in each of the reaction chambers and faces each other via the diaphragm. An electrolytic cell comprising a pair of electrode plates, wherein an electric current is applied between the two electrode plates to electrolytically treat the water to be treated flowing from the respective inlets to the respective outlets through the reaction chambers . It mounted in close contact with the respective electrode plates on the inner wall surface of the Ke <br/> Shin grayed,
Together <br/> that the back of the respective electrode plates covering the inner end of each of the inlet, it to each of the inlet at the back of the respective electrode plates
Forming a branch passage communicating with, respectively, each of said inlets through these branch passages substantially horizontally formed along a pair of inlet chamber communicating with the lower edge of the respective electrode plates, before these inflow chamber
The lower end of each electrode plate communicates with the pair of reaction chambers.
By, for-treatment water supplied to the inlet chamber wherein the electrode
An electrolytic cell characterized in that it flows upward along the front surface of the plate and flows out from the outlet .

[0005]

In the electrolytic cell as constructed above [Operation and Effect of the Invention, have more inner end of each inlet is covered on the back of each electrode plates, treated water flowing into the inlet port the electrode plates Tall
Since the water flows through the branch passages formed in the surface in a distributed manner to the respective inflow chambers formed along the lower edge of each electrode plate, the distribution of the amount of water to be treated into each of the inflow chambers is made uniform throughout the respective inflow chambers. You. Therefore, the water to be treated flows upward from each of the inflow chambers to each of the outflow ports, and is electrolytically treated with high efficiency between the entire widths of the two electrode plates. Also, each inflow chamber communicating with each inflow port is formed along the lower edge of each electrode plate, and each outflow chamber communicating with each outflow port is formed along the upper edge of the electrode plate. In this case, the water to be treated flows substantially vertically upward from each of the inflow chambers to each of the outflow chambers, and the gas bubbles generated by the electrolytic treatment receive buoyancy and the force of the flow of the water to be treated accurately. It is discharged accurately without adhering and accumulating on the electrode plate, and the electrolytic treatment efficiency does not deteriorate due to the intervening retention of air bubbles.

In the case where a guide is provided between each electrode plate and the diaphragm and extends in a vertical direction at a predetermined interval and guides the flow from each inflow chamber to each outflow chamber in a substantially linear manner, Because the treated water flows upward from each inflow chamber to each outflow chamber in a substantially straight line,
Unevenness of the flow can be prevented, which can also improve the efficiency of electrolytic treatment. Also, it constituted by a pair of casing plates which are liquid-tight bonded via a diaphragm casing at its outer periphery, one Keshi
An engaging projection is formed on the joint surface of the
Forming an engaging groove in the joint surface of the
The engagement protrusion is fitted into the engagement groove via an outer peripheral edge.
This causes the diaphragm to tension outward from its center.
In the case where the separator is provided, the diaphragm does not sag even if the diaphragm extends, so that the diaphragm does not come into contact with the electrode plates even if the distance between the two electrode plates is reduced. Therefore, the distance between the two electrode plates can be set small, and power can be saved.

[0007]

An embodiment of the present invention will be described below with reference to the drawings. The electrolytic cell A according to the present invention shown in FIGS. 1 and 2
A casing 10 having a pair of outlets 11a, 12a below and a pair of outlets 11b, 12b above;
A pair of reaction chambers R1, R2 each having an inlet 11a, 12a and an outlet 11b, 12b open through the inside of the casing 10.
An ion permeable diaphragm 20 which bisects the respective reaction chambers R
1, R2, and a pair of rectangular electrode plates 30, 30 facing each other, and a pair of guides 40, 40 disposed between each of the electrode plates 30, 30 and the diaphragm 20 respectively.

The casing 10 has a casing plate 11 made of an insulating resin shown in FIG. 3 and a casing plate 12 made of an insulating resin material shown in FIG. 4, and these two casing plates 11, 12 are joined and fixed. 16 bolts 13 and spring washer 1
4 and nuts 15 (see FIG. 1) and the like.
a, 12a and outlets 11b, 12b are formed, and stepped holes 11c,
12c is formed. As shown in FIG. 3 and FIG. 4, the casing plates 11 and 12 are formed with rectangular recesses 11d and 12d on the opposing surface side, and are formed below the recesses 11d and 12d. Are wide grooves 11e, 12e
At the center, narrow grooves 11f, 12f communicating with the inner ends of the inlets 11a, 12a are formed substantially horizontally, respectively, and a pair of grooves 11g, 12g for communicating these grooves 11e, 12e with 11f, 12f. (It is possible to adjust the flow rate distribution of the water to be treated from the narrow grooves 11f and 12f to the wide grooves 11e and 12e by changing the arrangement positions and the numbers thereof). The outlets 11b, 1 at the center of the upper ends of the recesses 11d, 12d.
Grooves 11h and 12h communicating with the inner end of 2b are formed substantially horizontally. Also, the recess 11 of the casing plate 11
A protrusion 11i having a semicircular cross section is formed in a rectangular shape on the outer circumference of d, and a groove 12i in which the protrusion 11i fits is formed in a rectangular shape on the outer circumference of the concave portion 12d of the casing plate 12 correspondingly. I have. The groove 12i is filled with an elastic sealing member 16 in advance. Each casing plate 11, 12 has 16 bolt insertion holes 11.
j and 12j are respectively formed.

Although the diaphragm 20 is shown thick in FIGS. 1 and 2, it is actually a microporous thin film having a thickness of 0.12 mm and made of a polyester nonwoven fabric as an aggregate. As shown, each of the casing plates 11 and 12 is cut into substantially the same dimensions, and each of the bolt insertion holes 11j and 1 is cut.
2j, a bolt insertion hole 21 is provided so as to substantially coincide with the protrusion 11i and the groove 12i of the casing plates 11, 12 when assembled as shown in FIG.
Is pulled to the outer periphery by the cooperative action of the above, and a predetermined tension is applied.

As shown in FIGS. 1, 2 and 6, each electrode plate 30 comprises a rectangular electrode plate main body 31 and a nut 32 welded to substantially the center thereof. 11 and 12 rectangular recesses 11d and 12d
And put each electrode terminal 50 on the nut 32 with an O-ring 51.
(Accommodated in the annular groove formed in the electrode terminal 50) by screwing the respective casing plates 11, 12
The inner ends of the inlets 11a and 12a and the grooves 11f, 12f and 11
g, 12g and a part of the grooves 11e, 12e are covered, and the respective inflow chambers R1a, R2a communicating with the respective inlets 11a, 12a through the branch passages composed of the grooves 11f, 12f and 11g, 12g are provided. Outflow chambers R1b and R2b are formed substantially horizontally along the lower edge of the electrode plate 30, and are formed substantially horizontally along the upper edge of each electrode plate 30 so as to communicate directly with the outlets 11b and 12b. .

As shown in FIGS. 1, 2, 6 and 7, each guide 40 is formed of an insulating resin material.
Each of the vertical plates 41 to 41 includes a pair of upper and lower horizontal plates 42 and 43 fixedly connected to upper ends and lower ends of one side of the vertical plates 41 to 41 and connected at predetermined intervals. Each casing plate 1 in which the respective electrode plates 30 are assembled such that 42 and 43 are on the respective electrode plate 30 sides.
The first and second recesses 11d and 12d are fitted and fixed to each other, and the vertical plates 41 to 41 function to prevent the contact between the electrode plates 30 and the diaphragm 20 and the inflow chambers R1a and R1
A function of guiding the flow from 2a to the outflow chambers R1b and R2b in a straight line, and a flow rate flowing from the inflow chambers R1a and R2a to the outflow chambers R1b and R2b in cooperation with the electrode plates 30 at the lower horizontal plate 43. A slit-shaped aperture S defined to a predetermined amount is formed. The opening area of the slit-shaped stop S is
The mounting position of each electrode plate 30 to each casing plate 11, 12 can be adjusted by adjusting the vertical position. For this purpose, the screw portion of each electrode terminal 50 and the stepped hole of each casing plate 11, 12 can be adjusted. A required gap is provided between 11c and 12c. Further, the cross-sectional shape of each vertical plate 41 is preferably a triangular shape which is in surface contact with the diaphragm 20 and is in line contact with each electrode plate 30 or a baseball baseball shape. With such a shape, the effective area of each electrode plate 30 is reduced. Not only that, but also air bubbles are expelled.

The electrolytic cell A of this embodiment is provided with the casing plates 11 and 12 shown in FIGS.
After the respective electrode plates 30 are mounted using the respective O-rings 51 and the respective electrode terminals 50 shown in FIG. 5, the respective guides 40 are assembled to form, for example, as shown in FIG. It is assembled as shown in FIG. 1 by tightly joining and fixing it with 16 bolts 13, spring washers 14 and nuts 15.

In the electrolytic cell A configured as described above, the water to be treated flows from each inlet 11a, 12a to each groove 11a.
f, 12f and 11g, 12g, flows into each of the inflow chambers R1a, R2a formed substantially horizontally, and flows upward from each of the inflow chambers R1a, R2a to the outflow chambers R1b, R2b through between the two electrode plates 30. Flows into each outflow chamber R1
b, R2b flows to the outlets 11b, 12b, and the electrolytic treatment is performed between the two electrode plates 30. By the way, in this embodiment, each of the inlets 11a,
The inner end of 12a, the entire grooves 11f, 12f and 11g, 12g and a part of the grooves 11e, 12e are covered, and the water to be treated flowing into the respective inlets 11a, 12a passes through the branch passages to the respective electrode plates 30. Flows along the lower edge of each of the inflow chambers R1a and R2a formed substantially horizontally, and the distribution of the amount of water to be treated flowing into each of the inflow chambers R1a and R2a is made uniform throughout the inflow chambers. . Therefore, the water to be treated flows from the inflow chambers R1a and R2a to the outflow chambers R1b and R2b substantially uniformly, and is electrolytically treated with high efficiency substantially uniformly between the entire widths of the two electrode plates 30. In addition, each inflow chamber R1a, R2a of the water to be treated
From the outlet chambers R1b and R2b are substantially vertical,
The gas bubbles generated by the electrolytic treatment are properly received by the buoyancy and the force of the flow of the water to be treated, and are accommodated in the outflow chambers R1b and R2b formed above the respective electrode plates 30. It is accurately discharged without adhering and accumulating on the substrate 30, and the electrolytic treatment efficiency does not deteriorate due to the intervening retention of air bubbles.

Each of the electrode plates 30 and the diaphragm 20 extends in a vertical direction at a predetermined interval to guide the flow from the inflow chambers R1a, R2a to the outflow chambers R1b, R2b in a substantially linear manner. A guide 40 is provided, and the water to be treated is supplied to each inflow chamber R1.
a, R2a to flow into each of the outflow chambers R1b, R2b in a substantially straight line, so that it is possible to prevent the flow from being biased, thereby also improving the electrolytic treatment efficiency. In addition, the projections 1 formed on the casing plates 11 and 12
Since a predetermined tension is applied to the diaphragm 20 by the grooves 1i and the grooves 12i and the diaphragm 20 does not sag even if it extends, even if the distance between the two electrode plates 30 is reduced, the diaphragm 20 contacts the electrode plate 30. I will not do it. Therefore, the interval between the two electrode plates 30 can be set small, and power saving can be achieved.

In the above embodiment, as illustrated in FIG. 6, one of the inlets 11 is provided above and below the center of each of the casing plates 11 and 12, corresponding to the upper and lower centers of each of the electrode plates 30.
The invention of claim 1 was carried out in an electrolytic cell provided with a, 12a and each of the outlets 11b, 12b. As shown schematically in FIG. Correspondingly, each inflow port 1 is located at a diagonal position of each casing plate 11, 12.
It is also possible to carry out the invention of claim 1 in an electrolytic cell provided with 1a, 12a and each of the outlets 11b, 12b. In this case, a branch passage (groove 11) is provided in each of the inlets 11a, 12a.
g, 12g) and L-shaped grooves 11e, 12
e is formed in each of the casing plates 11 and 12, and the grooves 11e and 12e form L-shaped inflow chambers R1a and R2a along the lower edge and the side edge of each electrode plate 30. . The flow from each of the inflow chambers R1a and R2a to each of the outflow ports 11b and 12b is guided by a guide 40 attached to each electrode plate 30.

In the above embodiment, the grooves 11h, 12h communicating with the inner ends of the outlets 11b, 12b at the center at the upper ends of the recesses 11d, 12d in the casing plates 11, 12 are substantially horizontal. Although the grooves 11h and 12h are not formed, it is also possible to perform the processing so that the distribution of the amount of the water to be treated flowing into each of the inflow chambers R1a and R2a is made uniform throughout the inflow chambers. It is. Further, in the above embodiment, the wide grooves 11e, 12e and the inflow port 11a at the center under the recesses 11d, 12d.
Narrow grooves 11f, 12f communicating with the inner end of 12a are formed substantially horizontally, respectively.
A pair of grooves 11g and 1g for communicating 2e with 11f and 12f.
2g is formed substantially vertically, but each inlet 11
a, 12a are communicated directly with the wide grooves 11e, 12e, and the respective grooves 11f, 12f and 11g, 12g.
, The water to be treated flows from the inflow chambers R1a, R2a to the outflow chambers R1b, R2b substantially vertically, and the gas bubbles generated by the electrolytic treatment are accurately discharged without adhering to and accumulating in the electrode plates 50. It is also possible to carry out as follows.

[Brief description of the drawings]

FIG. 1 is a central vertical sectional side view showing an embodiment of an electrolytic cell according to the present invention.

FIG. 2 is an exploded view of the electrolytic cell shown in FIG.

FIG. 3 is a front view of a single casing plate on the right side shown in FIG. 1;

FIG. 4 is a front view of a single casing plate on the left side shown in FIG. 1;

FIG. 5 is a front view of the diaphragm shown in FIG. 1;

FIG. 6 is a front view showing a state where an electrode plate and a guide are assembled to the right casing plate shown in FIG. 1;

FIG. 7 is a front view of the guide alone shown in FIG. 1;

FIG. 8 is a diagram corresponding to FIG. 6, schematically showing another embodiment of the electrolytic cell according to the present invention.

[Explanation of symbols]

10 ... casing, 11, 12 ... casing plate,
11a, 12a: inlet, 11b, 12b: outlet, 1
1f, 12f, 11g, 12g ... groove (branch passage), 11
i, 12i: Projection, groove (tension applying means), R1, R2 ...
Reaction chamber, R1a, R2a: inflow chamber, R1b, R2b: outflow chamber, 20: diaphragm, 30: rectangular electrode plate, 40: guide.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-131183 (JP, A) JP-A-4-284889 (JP, A) JP-A-4-330987 (JP, A) 57296 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) C02F 1/46

Claims (7)

(57) [Claims] 1. A pair of inflow ports located opposite each other.
A pair of outlets located opposite to the lower part provided
An insulating casing vertically provided with an upper portion provided with an ion-permeable member, and an ion permeating portion for dividing the inside of the casing into a pair of reaction chambers each having the inlet and the outlet opened. A possible diaphragm and a pair of electrode plates respectively disposed in each of the reaction chambers and facing each other via the diaphragm, and a current is supplied between the two electrode plates to allow the two reaction chambers to flow from the respective inlets. An electrolytic cell configured to electrolytically treat the water to be treated flowing to each of the outlets through the casing.
Each of the electrode plates is closely attached to the inner wall surface of the battery, and the inner end of each of the inflow ports is covered by the back surface of each of the electrode plates. Each at the inlet
Forming a through branching passage, before through these branch passages
A pair of inflow chambers communicating with the respective inlets are formed substantially horizontally along the lower edge of each of the electrode plates , and these inflow chambers are connected to the respective electrodes.
The lower end of the electrode plate is communicated with the pair of reaction chambers, respectively.
Te, treatment water supplied to the inlet chamber of the respective electrode plates
An electrolytic cell characterized by flowing upward along the front surface and flowing out of the outlet . 2. An insulative casing having a lower portion provided with a pair of inflow ports located opposite each other and an upper portion provided with a pair of outlets located opposite each other, and installed vertically. An ion-permeable diaphragm that divides the interior of the casing into a pair of reaction chambers in which the inflow port and the outflow port are respectively opened, and a pair of ion-permeable membranes disposed in the respective reaction chambers and facing each other via the diaphragm. In an electrolytic cell provided with an electrode plate, a current flowing between the two electrode plates is used for performing electrolytic treatment on water to be treated flowing from the respective inlet ports to the respective outlet ports through the reaction chambers. said mounting by close contact with the respective electrode plates on the inner wall surface, that they cover the inner end of the respective inlet by the back of each electrode plates, through each communicating to the each inlet at the back of the electrode plates one Twin inflow chamber Are formed substantially horizontally along the lower edge of each of the electrode plates, and these inflow chambers are communicated with the pair of reaction chambers at the lower ends of the respective electrode plates, respectively, to be processed supplied to the inflow chambers. An electrolytic cell, wherein water flows upward along the front surface of each electrode plate and flows out of the outlet through a pair of outlet chambers formed along the upper edge of each electrode plate. 3. The method according to claim 1, further comprising: vertically extending at a predetermined interval between each of said electrode plates and said diaphragm to extend from said inflow chamber to said outflow chamber .
3. The electrolytic cell according to claim 2 , further comprising a guide that guides the flow of the water to be treated upward substantially in a straight line. 4. The method according to claim 1, wherein the guide is moved from each of the inflow chambers to each of the flow chambers.
4. The device according to claim 3, wherein the device is provided vertically toward the exit.
The electrolytic cell as described. 5. The guide is provided from one side of each of the inflow chambers.
It is characterized by being installed diagonally upward toward the other side of each outflow chamber
The electrolytic cell according to claim 3, wherein 6. The guide is mounted on a pair of upper and lower horizontal plates at an upper end and a lower end.
It is composed of a plurality of lattice members having a polygonal cross section which are fixed at the ends and arranged at predetermined intervals in the lateral direction, and these lattice members are brought into surface contact with the diaphragm and brought into line contact with the respective electrode plates. The electrolytic cell according to claim 3, wherein: 7. constituted by pre-Symbol pair of casing plates which are liquid-tight bonded via the outer peripheral edge of the diaphragm casing at its outer periphery, an engaging projection on the joint surface of one of the casing plates An engaging groove is formed on the joint surface of the other casing plate, and the engaging protrusion is fitted into the engaging groove via an outer peripheral edge of the diaphragm, whereby the diaphragm is moved outward from a center portion thereof. The electrolytic cell according to claim 1, wherein a tension is applied to the cell.