JPS5824894Y2 - ozone generator - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an ozone generator, and particularly to an improvement in a sealing structure that seals the outer peripheral surface of a cylindrical insulator to prevent ozonized air from leaking outside.

Figure 1 aXb shows the schematic configuration of the ozone generator.
1 is a tank, 2 is a fixed end plate fixed inside the tank, 3
1 is an end plate attached to both ends of the tank 1, 4 is a conductive metal tube disposed inside the tank 1, and 5 is an end plate whose both ends are arranged with a predetermined gap inside the metal tube 4. 3 is an insulating cylindrical body penetrated through the insulating cylindrical body, 6 is a conductive material plating layer formed on the inner surface of the insulating cylindrical body 5, 7 is an electrode inserted into the insulating cylindrical body 5, and 8 is a conductive material provided at the end of the electrode 7. A brush 9 is in contact with the inner surface of the material plating layer 6, a sealing member 9 seals the penetration portion where the insulating cylinder 5 is penetrated by the end plate 3, X is a raw material inlet, and Y is an ozonized air outlet.

In such a structure, when the raw material gas is introduced from the raw material population X, the gap between the metal tube 4 and the insulating cylindrical body 5 is filled with the raw material gas.

At this time, a high voltage is applied to the electrode 7 to cause a silent discharge between the metal tubes 4 using the insulating cylinder 5 as a dielectric, and the oxygen in the flowing gas is converted into ozone and sent out from the discharge port Y, which requires ozone. supplied to the device.

In this case, ozone has strong oxidizing power and is usually harmful to the human body if it exceeds 0.1 ppm.
The seal must be securely sealed.

In addition, when vibrations or shocks applied from outside the ozone generator occur, such as vibrations during operation or vibrations caused by earthquakes, the insulating cylindrical body 5 may come into contact with other parts and be damaged, so it is necessary to prevent this. There is.

Figures 2 and 3 show different conventional insulating cylinders 5.
This shows the seal structure between the end plate 3 and the end plate 3.

That is, as shown in FIG. 2, spacers 11 and 12 are provided at the penetrating portions between the fixed end plates 2 and 3 and the insulating cylindrical body 5, respectively.

Then, an O-ring box 13 is inserted into the end of the insulating cylindrical body 5 from the outside of the end plate 3, and this O-ring box 1
O-rings 14 and 15 are fitted into grooves 13a and 13b on the inside and outside of O-ring box 13, respectively, and 7 langes 16 are provided on the outside of O-ring box 13.
are fastened to the end plate 3 with bolts 17.

In this case, the tolerance in the outer diameter of the insulating cylinder 5 is usually 1
Most of the seals exceed mm, and it is impossible to make the casing smaller than this due to engineering considerations, so those with such a configuration have the disadvantage that a sufficient sealing effect cannot be obtained.

In addition, since the insulating cylinder 5 is held by a spacer 11 provided between the metal tube 4 and the insulating cylinder 5 or a spacer 12 provided between the end plate 3 and the insulating cylinder 5, external vibrations and shocks The spacers 11 and 12 may crack.

On the other hand, in FIG. 3, seven flange 3a protruding outward is formed on the end plate 3, a rubber ring 18 is provided between the seven flange 3a and the insulating cylindrical body 5, and this is attached to the hose band 19.
It is designed to be tightened by 0.

In this case, the seal is reliable, but since the spacer 12 is provided between the end plate 3 and the insulating cylinder 5 as in Fig. 2, it cannot withstand external vibrations and impacts, which may cause cracks. Become.

This invention was made in view of the above circumstances, and the purpose is to provide an ozone generator that can securely seal regardless of the outer diameter tolerance of the insulating cylindrical body and does not require a spacer.

Examples of this invention will be described below with reference to the drawings.

Figure 4 aXb shows the first embodiment of this invention.
A box 21 is provided at the end of the insulating cylindrical body 5, which has a groove 21a along the hole periphery and a groove 21 near the outer periphery on the inner side surface, that is, the surface facing the end plate 3, as shown in the figure.
b is formed, and further a groove 21c having a trapezoidal cross section is formed along the periphery of the hole on the surface opposite to the outer side hanging end plate 3.
is formed.

The groove 21a is provided with an O-ring 22, and the groove 21b is treated with an ozone-decomposing agent such as manganese oxide or lead oxide (specifically, for example, asbestos string is thoroughly soaked with a 50% solution of manganese nitrate or lead nitrate). After that, 200
A rectangular packing 23 (slowly dried in a heating furnace at ~300° C.) is fitted into the groove 21c, and a packing 24 having a trapezoidal cross section is fitted into the groove 21c.

A holding plate having a hole 25a in the center and a flange 25b for pressing the packing 24 is arranged on the outside of the packing 24, and is fastened to the end plate 3 by a pole 26.

By tightening the presser 25 with the bolt 26, the flange 25b of the presser 25 releases the trapezoidal seal 2 as shown in FIG.
4 is greatly deformed from the inner circumferential side toward the outer diameter side of the insulating cylindrical body 5 from the position indicated by the dashed dot line to the position indicated by the solid line, and as a result, it tightly adheres to the box 21 and the insulating cylindrical body 5, ensuring a secure seal. .

If the tolerance of this insulating cylindrical body 5 is extremely poor, the tightening dimension between the end plate 3 and the presser 25 may be increased to increase the tightening width, or the tapered surface of the trapezoidal piece T-ton 24 may be made larger. This allows for reliable sealing.

Further, since the insulating cylindrical body 5 is supported by the trapezoidal packing 24, there is no need to provide a conventionally used spacer, and furthermore, it is possible to prevent contact and collision with other parts even in the event of vibration, impact, or earthquake during transportation.

In addition, the gasket 23, which comes into direct contact with ozone, is treated with manganese oxide or lead oxide, so for example 1100
Even if the concentration of ozone is as high as 0.00 pp, it will be decomposed by the ozone decomposition action of manganese oxide or lead oxide, and even if ozone leaks to the outside through the packing 23, the ozone will remain at 0.00 pp. lp
The concentration is below pm.

In general, ozone is easily decomposed naturally into 02, 15-1
Although it has the property of reducing by half in 6 hours, manganese oxide and lead oxide promote ozone decomposition.

For this reason, conventional gaskets made of ozone-resistant rubber such as silicone Hypalon, chlorinated PE rubber, EP rubber, or EPT rubber must be replaced after a certain period of time, but this invention eliminates this need. This makes maintenance easier.

In addition, when a relatively strong silicone tube among ozone-resistant rubbers was tested in 110,000 pp of ozone, it lost its elasticity and lost its function as a seal after several hundred hours.

From the above, it is possible to reliably prevent ozone leakage in insulating cylindrical bodies with large tolerances that cannot be sealed, regardless of the size of the outer diameter tolerance, and to securely fix the insulating cylindrical body, while maintaining earthquake resistance. It can be easily assembled and maintained.

FIG. 6 shows a second embodiment of this invention, in which a box 27 shaped as shown in the figure is fitted into the hole 3b of the end plate 3.

Since it has the same configuration as that of the side medicine 4, the same parts are given the same reference numerals and explanations will be omitted.

By doing this, the packing 23 shown in FIG. 4 can be omitted, and the outer diameter of the trapezoidal packing 24 can be reduced.

FIG. 7 shows a third embodiment of this invention, in which a trapezoidal groove 3C is formed along the outer edge of the end plate 3 using a thick end plate 3. A trapezoidal gasket 24 is fitted into the holder, and this is fastened with a presser 25 having seven flanges and a bolt 26 in the same manner as described above.

With this configuration, the box 21 used in the first and second embodiments can be omitted.

Figure 8aXb shows the fourth embodiment of this invention.
The insulating cylindrical body 5 is made to protrude from the end plate 3, a cap nut 28 is screwed onto the outer periphery of the protruding plate, and an O-ring 32 and manganese oxide treatment or oxidation are applied to the grooves 28a and 28b of the cap nut 28 on the side of the end plate 3. A lead-treated packing 29 is provided, and a nut 31 is provided inside the end plate 3 via a collar 30.

Fig. 9 shows a fifth embodiment of the invention of aXb cigarette,
A step portion 5a is formed to prevent the externally protruding end of the insulating cylindrical body 5 from coming off the end plate 3, and a box 33 is formed which has grooves 33a and 33b inside the end plate 3 and grooves 33c and 33d along the hole. O-rings 34 and 35 are provided in the grooves 33a and 33c, and packings 36 and 37 treated with manganese oxide or lead oxide are fitted in the grooves 33b and 33d, respectively, and a protrusion 38 that presses the packing 37 into the insulating cylindrical body 5.
The box 33 is tightened by providing a nut 38 having a shape.

In both Figures 8 and 9, ozone flows into each O-ring 34.35 from the second part, but it always passes through the packing 36.37 treated with manganese oxide or lead oxide, so
Ozone 0.1 leaks to the outside even at high concentrations
ppm or less.

According to the invention described above, it is possible to provide an ozone generator that can securely seal regardless of the value of the outer diameter tolerance of the insulating cylindrical body and that can be easily maintained.

[Brief explanation of the drawing]

Figure 1 aXb is a sectional view and side view showing the schematic structure of an ozone generator, Figures 2 and 3 are sectional views showing parts of different conventional sealing structures, and Figures 4 a and b are views of this invention. 5 is an enlarged view of a part of FIG. 4, and FIGS. 8a and b are side views and sectional views showing only the main parts of the fourth embodiment of this invention, and FIG. 9aXb is a sectional view showing the main part of the fourth embodiment of this invention. FIG. 3 is a side view and a cross-sectional view showing only essential parts of the embodiment. 1...Tank, 2...Fixed end plate, 3.
...End plate, 4...Metal tube, 5...
・Insulating cylindrical body, 22, 32° 34... O-ring, 23, 36, 37... Manganese oxide or lead oxide treated packing, 24... Trapezoidal packing , 25...presser, 26...
Natsutto, 28...Fukuro Natsutto, 33...
Box, 38...Natsuto.

Claims (1)

[Scope of utility model registration request] A tank having an external electrode inside and an end plate at the end, an insulating tube penetrated by the end plate and having an internal electrode formed on the inner surface, and a penetrating portion between the outer periphery of the insulating tube and the end plate. A member disposed in the tank and joined to the end plate, and a manganese oxide or oxide member provided between the joint between this member and the end plate, where ozone generated in the tank leaks to the outside. An ozone generator equipped with a lead-treated gasket that has an ozone decomposition effect.