JP2514513Y2 - Diaphragm electrode structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a diaphragm electrode structure having a horizontally arranged diaphragm structure.

[Prior Art] An electrodeposition coating device uses a so-called diaphragm electrode device formed of a plurality of diaphragm electrode structures and a common polar liquid management unit common to these in order to remove metal ions eluted from the electrodes. .

Each diaphragm electrode structure is composed of a diaphragm structure including a cylindrical diaphragm body supported on both sides by a holding member and an electrode penetrating the diaphragm body, and the polar liquid management unit is a polar liquid supply pipe and a polar liquid. Connected with the liquid discharge pipe.

Further, as a mode of disposing the diaphragm electrode structure in the electrodeposition bath (electrodeposition liquid), for example, a vertical disposition type disclosed in JP-A-61-272399, and, for example, Japanese Utility Model Laid-Open No. 64-53767 is disclosed. The horizontal arrangement type disclosed in the publication is known.

The vertically-arranged type is a general type, which is arranged on both insides of the electrodeposition tank so as to face the work. On the other hand, the horizontal arrangement type
Its usefulness is increasing as a means for further improving coating film quality. It is convenient to dispose on the bottom of the tank or the like, or by disposing the axes in parallel along the moving direction of the work, the distance between the work and the work can be made uniform.

By the way, it has been pointed out that in order to popularize and spread the horizontally arranged type, the diaphragm and the electrode should be exchangeable without extracting the electrodeposition liquid from the electrodeposition tank. In response to this, the present applicant proposes a horizontal arrangement type diaphragm electrode structure shown in FIG. 3 which is a further improvement over the type shown in Japanese Utility Model Application Laid-Open No. 64-53767 (Japanese Patent Application No. 1-98550). No.)

In the figure, 20 is a diaphragm structure (one holding member 21, cylindrical diaphragm member 22, the other holding member 23).
The diaphragm electrode structure 10 is formed by arranging 0 through. Incidentally, 24 is a protective member.

The diaphragm electrode structure 10 is connected to a polar liquid management unit via a polar liquid supply pipe 41 watertightly connected to one holding member 21 and a polar liquid discharge pipe 51 watertightly connected to the other holding member 23.

Here, the polar liquid supply pipe 41 may be a small-diameter pipe 41M basically selected quantitatively, but a part thereof has a sufficient mechanical strength when the diaphragm electrode structure 10 is taken out from the electrodeposition liquid. A large diameter tube (41R, 41V) is used to hold it. Similarly, the polar liquid discharge pipe 51 is also formed of a small diameter pipe 51M and a large diameter pipe (51R, 51V).

In addition, each large diameter pipe has a vertical rising pipe 41V (51V) and a bent pipe 41R (51V) to minimize the installation space in the electrodeposition tank.
R) and formed. The upper end of the rising pipe 41V (51V) is arranged on the electrodeposition liquid surface and is open to the atmosphere for deaeration. In addition, a pipe joint is used between each large diameter pipe 41V, 41R (51V, 51R).
46 (56), and the pipe joint 45 (5
5) Watertight connection via.

Therefore, according to the horizontally arranged diaphragm electrode structure 10, the entire diaphragm electrode structure 10 can be easily taken out of the electrodeposition liquid as in the vertically arranged type, and the diaphragm body can be obtained without extracting the electrodeposition liquid. It is possible to replace the electrode 22 and the electrode 30.

[Problems to be Solved by the Invention] The reason why the diaphragm electrode structure 10 is adopted instead of simply using the electrode (30) is to remove the eluted ions from the electrode (30). In septum 22
It is clear that the electrode 30 is replaced more frequently than

However, in the above conventional structure, the pipe joint 55 must be disassembled after the entire diaphragm electrode structure 10 is taken out of the electrodeposition liquid, which is troublesome. Also, when disassembling the pipe joint 55, the large-diameter pipe (51V, 51R) must be supported and moved due to its form, which requires too much labor. Moreover, when the power supply bar 31 is also replaced, the pipe joint 56 must be disassembled due to its large curvature, which further increases the labor. Reassembling these also requires a lot of labor and time.

An object of the present invention is to provide a diaphragm electrode structure in which only the electrode can be replaced quickly and easily while ensuring easy removal to the outside of the electrodeposition liquid.

[Means for Solving the Problem] The present invention focuses on the form of a horizontally arranged diaphragm and electrode, and the electrode can be formed without breaking the watertight connection between the polar liquid supply pipe or the polar liquid discharge pipe and the diaphragm structure. The above-mentioned technical problem is solved by being configured so that it can be drawn out in the axial direction.

That is, according to the present invention, a diaphragm structure is formed that includes a cylindrical diaphragm body supported on both sides by a holding member and is horizontally arranged in the electrodeposition liquid, and an upper end is arranged on the surface of the electrodeposition liquid and a lower end is held. In a diaphragm electrode structure comprising at least one rising pipe forming a polar liquid supply pipe or a polar liquid discharge pipe watertightly connected to a member, and an electrode arranged in a diaphragm body, on the axis of the diaphragm structure. An opening communicating with the diaphragm structure is provided on the opposite side of the diaphragm structure sandwiching the rising pipe, and a cap member capable of water-tightly closing the opening is provided, and the cap member is water-tightly penetrated through a power supply bar connected to the electrode. It is characterized in that it is formed so that it can be attached to and detached from the opening.

[Operation] In the present invention, the whole can be easily taken out of the electrodeposition liquid by holding the rising pipe.

Then, by removing the cap member and opening the opening,
It can be taken out simply by pulling the electrode and the feed bar in the axial direction. It is not necessary to break the watertight connection between the riser pipe, ie the polar liquid supply pipe or the polar liquid discharge pipe, and the diaphragm structure.

Therefore, the electrodes can be easily and quickly converted. Therefore, a high quality coating film and productivity can be significantly improved.

It should be noted that after replacing the electrodes, it suffices to mount the cap member and close the opening.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional view of a diaphragm electrode structure according to the present invention.

The diaphragm electrode structure 10 is composed of a diaphragm structure 20 (one holding member 21, a cylindrical diaphragm member 22, the other holding member 23) and an electrode 30, and one holding member 21 has a polar liquid discharge pipe 51 (51M, 51V, 51H)
The lower end 51D is watertightly connected, and the upper end 51U is arranged so as to project above the electrodeposition liquid surface.

The polar liquid discharge pipe 51 of this embodiment is a high-rigidity large-diameter pipe (rise pipe 51V, horizontal pipe 51H) and a polar liquid not shown so that the entire diaphragm electrode structure 10 can be taken out of the electrodeposition liquid. It consists of a quantitatively defined small diameter pipe 51M connected to the management unit. Further, the horizontal pipe 51H is formed so that it can be divided into two by the pipe joint 65. This is for convenience of replacement work of the diaphragm body 20.

The upper part of the rising pipe 51V is open to the atmosphere for deaeration.

41M is a polar liquid supply pipe, which is arranged so as to pass through the polar liquid discharge pipe 51 and have its tip 41t positioned inside the other holding member 23. Therefore, the polar liquid is the other holding member 23.
Inside the diaphragm 22 and the electrode 30, the flow is reversed from right to left in one direction to reach the pipe 51M. As a result, the polar liquid property in the diaphragm electrode structure 10 is maintained constant and the electrode 30 is properly cooled.

By the way, reference numeral 60 denotes an opening, which is provided on the opposite side of the rising tube 51V (the rising portion 51D) on the axis Z of the diaphragm structure 20 so as to communicate with the diaphragm structure 20.

Specifically, the large diameter part (51V, 51H) of the polar liquid discharge pipe 51 is T
It is shaped like a letter and has an opening at one end 51h and an opening 60
Is formed.

Next, 70 is a cap member, which is detachably attached to the opening 60, and is means for watertightly closing the opening 60 at the time of mounting. Further, the power supply bar 31 is formed so as to be watertight.

In this embodiment, a cylindrical body 62 and a pipe joint 61 are provided for the convenience of exchanging the electrode 30 as well as the convenience of supporting the power feeding bar 31, and the cap member 70 is formed so as to be attached to and detached from the cylindrical body 62. There is.

That is, in this embodiment, the cap member 70 has the opening 60.
It is formed so as to be indirectly removable and to indirectly close the opening 60.

Therefore, the cap member 70 includes a perforated main body 71 capable of being watertightly screwed to the cylindrical body 62, and a power feeding bar 31 (cable 32).
And a seal member 72 that allows water to penetrate therethrough. The power supply bar 31 refers to one that connects an electrode 30 that is provided in the diaphragm structure 20 and forms a counter electrode for a work (not shown) to a power supply device (not shown). Therefore, in this embodiment, the generic name including the cable 32 is defined.

Here, one end (right side in FIG. 1) of the electrode 30 is a supporting member.
It is locked to the other holding member 23 at 64, and the other end is locked to a bush type support member 63 provided in the opening 60 via the power feeding bar 31. The stays and the like in the middle are not shown.

By the way, the cap member 70 is a means for water-tightly closing the opening 60 during operation to prevent the flow mixture of the electrodeposition liquid and the catholyte, and the opening 60 is sufficient to allow the electrode 30 to pass smoothly. It is necessary to have a large size.

Here, in the present embodiment, the cap member 70 has a two-stage structure for the sake of efficiency, satisfaction of manufacturing, cost reduction, and handling based on the above.

That is, the support member 63 is formed of an elastic member having high electric insulation, and the opening 60 is directly watertightly closed in cooperation with the pipe joint 61, and the power supply bar 31 is supported while being watertightly penetrated. It is configured.

That is, the seal member 72 works against the external pressure of the electrodeposition liquid, and the support member 63 seals against the pressure of the polar liquid. In this respect, since the double seal structure is used, the watertightness can be maintained perfectly, and the connecting portion between the cable 32 and the power feeding bar 31 can be formed so as not to be immersed in the liquid.

 Next, the operation will be described.

As shown in FIG. 1, the diaphragm electrode structure 10 is used by being horizontally arranged in the electrodeposition liquid.

The polar liquid from the polar liquid supply pipe 41M passes through the polar liquid discharge pipe 51 and is reversed in the other holding member 23 so as to move inside the diaphragm electrode structure 10 first.
In the figure, it flows from right to left, and ascends at the rising portion 51D to reach the polar liquid discharge pipe 51M.

Thereby, the polar liquid property in the diaphragm electrode structure 10 is maintained constant, and the electrode 30 is properly cooled. Further, the generated gas is vented to the atmosphere through the opening of the upper portion 51U.

Here, in order to replace the electrode 30, the entire electrode is taken out of the electrodeposition liquid while holding the large diameter portion 51V of the polar liquid discharge pipe 51. Then, the pipe joint 61, which is the second cap member, is substantially released, and the cylindrical body 6
2. By pulling out the feeding bar 31 together with the support member 63 in the direction of the axis Z, the electrode 30 can be drawn out through the opening 60. At this time, the polar liquid in the diaphragm structure 20 can be collected when the opening 60 is opened.

Therefore, without removing the electrodeposition liquid from the electrodeposition tank,
The electrode 30 can be replaced without breaking the watertight connection between the polar liquid discharge pipe 51 and the diaphragm structure 20.

After replacement, the electrode 30 can be set in a fixed position by pushing the electrode 30 in the direction of the axis Z and tightening the pipe joint 61, and the opening 60 can be watertightly closed.

Further, when replacing the power feeding bar 31 or inspecting the connection portion with the cable 32, the cap member 70 may be taken out.

On the other hand, the replacement of the diaphragm body 22 can be performed by unfastening only the pipe joint 65.

Thus, according to this embodiment, the axis Z of the diaphragm structure 20 is
A removable cap is provided on the upper side opposite to the pole liquid discharge pipe 51 (start-up pipe 51V) so as to communicate with the diaphragm structure 20. The opening 60 is watertightly closed and the power supply bar 31 is watertightly penetrated. Since the member 70 is provided, it is possible to easily and quickly replace the electrode 30 without draining the electrodeposition liquid while enjoying all the benefits of the horizontal arrangement type.

Further, since the electrode 30 can be pulled out in the direction of the axis Z of the diaphragm structure 20, the electrode can be replaced without breaking the watertight connection between the drainage supply pipe 51 and the diaphragm structure 20. It can be simplified.

Further, the power feeding bar 31 can be formed in a linear shape along the axis Z, so that the cost can be reduced.

Further, the cap member (70) includes a first cap member 70 and a second cap member 70 for convenience of production and for maintaining a two-stage watertightness.
Since it is formed of 61, 62, 63, work for each purpose such as smooth extraction of the electrode 30 and inspection of the connection portion with the cable 32 can be independently performed, and the cost can be reduced.

Furthermore, the horizontal pipe 51H of the polar liquid discharge pipe 51 has a pipe joint 65
Since it can be divided by, it is possible to quickly replace only the diaphragm 22.

In the above embodiment, the polar liquid supply pipe 41M is of the type arranged inside the polar liquid discharge pipe 51, but as shown in FIG. It can be carried out as it is.

In this case, the opening 60 and the cap member 70 can be provided either on the side of the polar liquid supply pipe 41 shown by the solid line or on the side of the polar liquid discharge pipe 51 shown by the two-dot chain line.

[Effect of the Invention] According to the present invention, in the horizontally arranged diaphragm electrode structure,
Since an opening is provided on the axis of the diaphragm structure and a cap member that watertightly closes the opening and watertightly penetrates the power feeding bar, and the electrode can be drawn out along the axis, the polar liquid supply pipe or the polar liquid discharge pipe can be formed. With the rising tube to be formed, the whole is taken out of the electrodeposition liquid and only the electrodes can be replaced quickly and easily without breaking the watertight connection with the diaphragm structure, thus further improving the formation of high quality coating film and productivity. It has an excellent effect.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention, FIG. 2 is an external view showing a modified example, and FIG. 3 is a sectional view showing a conventional horizontally arranged diaphragm electrode structure. 10 ...... diaphragm electrode structure, 20 ...... diaphragm structure, 21 ...... one holding member, 22 ...... diaphragm member, 23 ...... other holding member, 30 ...... electrode, 31 ...... power supply bar, 32 ...... cable, 41 , 41M …… Polar liquid supply pipe, 51 …… Polar liquid discharge pipe, 51U …… Upper end, 51V …… Starting pipe, 51D …… Lower end, 51H …… Horizontal pipe, 60 …… Opening part, 61
...... Pipe joint, 62 …… Cylinder, 63 …… Support member, 65 …… Pipe joint, 70 …… Cap member, 71 …… Main body, 72 …… Seal member.

Claims (1)

(57) [Scope of utility model registration request] 1. A diaphragm structure which includes a cylindrical diaphragm member whose both sides are supported by a holding member and which is horizontally arranged in an electrodeposition liquid,
A rising pipe forming at least one polar liquid supply pipe or a polar liquid discharge pipe, the upper end of which is disposed on the electrodeposition liquid surface and the lower end of which is watertightly connected to the holding member, and an electrode which is disposed inside the diaphragm. In the diaphragm electrode structure consisting of, on the axis of the diaphragm structure, an opening communicating with the diaphragm structure is provided on the opposite side of the diaphragm structure sandwiching the riser tube, and a cap member capable of closing the opening in a watertight manner is provided, A diaphragm electrode structure, wherein a cap member is formed so that a power feeding bar connected to the electrode can be penetrated in a watertight manner and is detachably formed in the opening.