JP3699876B2 - Water-sealed drain trap - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for preventing a water seal from being broken when a water-sealed drain tank is used.
[0002]
[Prior art]
For example, a water-sealed drain trap is used as a device for taking out and discharging only drain water from a state where gas and drain water are mixed.
[0003]
FIG. 6 is a cross-sectional view schematically showing a conventional water-sealed drain trap. The water seal drain trap 1 is configured by inserting one end of a water seal pipe 4 into water 3 stored in a drain tank 2. Gas and drain water are conducted through the inside of the water seal pipe 4 from the other end of the water seal pipe 4, but the gas is sealed with the water 3 in the drain tank 3, and only the drain water is contained in the drain tank 2. It is mixed with water 3 and drained from the drain outlet 2a.
[0004]
For example, when such a water-sealed drain trap is used in a gas analyzer or is used to remove moisture in a pipe to be introduced into a gas processing apparatus, the gas flowing through the pipe in the apparatus is discharged to a drain outlet. Only moisture can be discharged while preventing leakage.
[0005]
Here, the case where the above water-sealed drain trap 1 is utilized for the exhaust ozone treatment device which is a kind of harmful exhaust gas treatment device will be described.
[0006]
FIG. 7 is a block diagram showing an outline of a conventional waste ozone treatment apparatus. The ozone gas generated by the ozone generator contacts the object to be processed in the ozone contact pond 5. At this time, not all of the ozone gas injected into the ozone contact basin 5 is used for processing, but a part of the ozone gas is released from the ozone contact basin 5 as ozone gas. Since ozone gas is a toxic gas, it needs to be decomposed into harmless oxygen. At this time, the exhaust ozone treatment device 6 is used.
[0007]
The exhaust ozone treatment device 6 decomposes ozone by allowing ozone to pass through a manganese-based catalyst or activated carbon at 40 to 60 ° C. in the ozone decomposition tower 7.
[0008]
The ozone gas released from the ozone contact pond 5 (hereinafter referred to as “exhaust ozone gas”) contains moisture in a saturated state. However, the above manganese-based catalyst and activated carbon extremely reduce the decomposition efficiency in the presence of moisture. It is necessary to introduce the ozone decomposition tower 7 after sufficiently removing moisture in the exhausted ozone. This water removal is an indispensable process for extending the life of the ozonolysis catalyst in the ozonolysis tower 7. For this reason, the exhaust ozone treatment device 6 is provided with a mist separator 8 and a heater 9.
[0009]
The mist separator 8 separates only moisture into the drain trap 1 when a gas containing moisture contacts a mesh-structured wire provided inside. The heating heater 9 raises the efficiency of ozonolysis performed at a later stage by raising the gas temperature, and removes moisture in the gas by evaporation.
[0010]
The mist separator 8 and the heating heater 9 are provided with a water-sealed drain trap 1, and both the mist separator 8 and the heating heater 9 cause the water-sealed drain trap 1 to receive moisture from the gas and discharge it. To do. Since ozone gas is a very toxic gas, it is sealed with the water-sealed drain trap 1 to prevent ozone leakage.
[0011]
However, the ozone contact basin 5 which is a source of exhaust ozone gas may cause a very large pressure fluctuation. This pressure fluctuation can be caused, for example, when the state of the workpiece is extremely deteriorated and the ozone gas flow rate is doubled for processing, or when the injection rate is doubled with another ozone generator. This is caused when the flow rate of ozone gas is increased due to volume fluctuations, when the water level in the ozone contact pond 5 is increased or decreased due to a sudden increase or decrease in the amount of treated water. In particular, when the water level of the ozone contact basin 5 is lowered, the pressure is greatly reduced. Conversely, when the water level is raised, the pressure is greatly increased.
[0012]
The pressure of the gas flowing in the water-sealed pipe 4 also fluctuates with the pressure fluctuation at such a gas generation source, and the water level in the drain tank 2 fluctuates as a result of this pressure fluctuation.
[0013]
For example, when the ozone contact pond 5 that is a gas generation source suddenly becomes in a reduced pressure state, the gas is drawn into the generation source. Thereby, the water for water sealing in the drain tank 2 is sucked into the ozone contact basin 5 side, and if this state continues, the drain tank 2 becomes empty and the atmosphere is sucked.
[0014]
Conversely, when the ozone contact basin 5 is pressurized and the gas pressure rises, the water level in the drain tank 2 rises, and further, water for water sealing in the drain tank 2 is discharged from the drain outlet 2a. It will overflow.
[0015]
Such a phenomenon causes gas to leak from the water-sealed drain trap 1, but the gas that needs to be installed in the water-sealed drain trap 1 is often a toxic gas. Ozone is also a very toxic gas as described above.
[0016]
Therefore, it is necessary to take measures to prevent gas from leaking from the water-sealed drain trap 1 even if the above phenomenon occurs.
[0017]
Conventionally, measures to lengthen the water-sealed piping and measures to install activated carbon or the like on the upper surface of the drain tank 2 have been taken, assuming that gas leaks from the drain trap 1.
[0018]
In addition, there exists a gas concentration meter as an example of utilization of the water seal type drain trap 1 other than an exhaust gas processing apparatus. An exhaust ozone concentration meter used in the flow of ozone treatment will be described as an example of the gas concentration meter.
[0019]
As a measuring method of the exhaust ozone concentration meter, an ultraviolet absorption method is generally used. This method is a method for obtaining ozone concentration by utilizing the fact that ozone has a maximum absorption band in the vicinity of 254 nm in the ultraviolet absorption region. The measurement gas is irradiated with ultraviolet rays emitted from a light source in an optical cell called a sample cell.
[0020]
For this reason, if the gas to be measured contains water, the sample cell will be clouded with water droplets, or water droplets will accumulate in the piping up to the exhaust ozone concentration meter, making it impossible to inhale the gas. I have come.
[0021]
Further, since the exhaust ozone gas is an ozone gas that has become excessive from the ozone contact pond 5, it contains saturated water. For this reason, it is necessary to remove moisture before introducing it into the exhaust ozone concentration meter, and this moisture is removed by the water-sealed drain trap 1.
[0022]
However, in this exhaust ozone concentration meter, since the gas is drawn from the ozone contact basin 5, the water seal in the drain tank 2 is caused by the fluctuation of the exhaust ozone gas pressure as in the case of the exhaust ozone gas treatment device 6 described above. It may be torn.
[0023]
Therefore, in order to maintain a water seal in this exhaust ozone concentration meter, as in the exhaust ozone gas treatment device 6, it is assumed that the water seal pipe is lengthened, and activated carbon is drained assuming that the gas leaks from the drain trap 1. Measures to be installed on the upper inner surface of the tank 2 are taken.
[0024]
Furthermore, an electronic dehumidifier that cools and dehumidifies the moisture by setting the ozone gas to a low temperature may be used as an element of the exhaust ozone concentration meter. This electronic dehumidifier is installed in the piping from the ozone contact basin 5 to the exhaust ozone concentration meter main body, and this installation position is suitable as close as possible to the exit of the ozone contact pond 5. The water removed by the electronic dehumidifier is returned to the ozone contact basin 5 by a natural dropping method.
[0025]
Even if an electronic dehumidifier is installed, a moisture removal trap may be separately installed in the exhaust ozone concentration meter body. This moisture removal trap is used as an auxiliary trap when moisture cannot be completely removed by the electronic dehumidifier.
[0026]
[Problems to be solved by the invention]
However, conventional measures for preventing gas leakage from the water-sealed drain tank 1 due to fluctuations in gas pressure in an exhaust ozone concentration meter or an exhaust ozone treatment device without an electronic dehumidifier include the following: There's a problem.
[0027]
For example, if the water seal piping is lengthened in order to secure the water seal of the water seal drain tank 1 or if activated carbon or the like is installed on the inner surface of the drain tank 2, the size of the drain trap 1 becomes large, which is expensive. Problems such as an increase in maintenance labor occur.
[0028]
In addition, considering that there are many cases where the fluctuation range of the gas pressure cannot be assumed, there is a problem that if the water-sealed piping is made longer than necessary, the drain tank 2 cannot be stored in the apparatus, and a new space for installing activated carbon. There is also a problem that it is necessary to ensure.
[0029]
On the other hand, when an electronic dehumidifier is applied to the exhaust ozone concentration meter, first, there is a problem that a space, a support, and a power source are required for installing the electronic dehumidifier on the piping near the outlet of the ozone contact pond 5. There is.
[0030]
For example, an electronic dehumidifier generally requires a space of about 200 mm square and needs to be able to support a weight of about 20 kg. Special attention should be paid to the space and support when the installation site is outdoors.
[0031]
Moreover, since a power supply of about AC 100v is also necessary, a new power supply for the electronic dehumidifier must be drawn. Therefore, it is often difficult to install the electronic dehumidifier in an optimal place.
[0032]
Furthermore, when an electronic dehumidifier is applied to the exhaust ozone concentration meter and a moisture removal trap is also installed in the exhaust ozone concentration meter main body, for example, during normal operation, some water remains in the trap and the trap outlet If is not normally closed, ozone gas may leak. In addition, when draining the drain in the trap, it is necessary to consider such as leaving a small amount of water. Furthermore, the inside is contaminated by ozone gas due to long-term use, and it is necessary to replace the trap as needed. Therefore, there are cases where the maintenance is labor intensive and the electronic dehumidifier cannot be installed.
[0033]
As described above, conventionally, countermeasures for gas leakage may not be effectively utilized.
[0034]
The present invention has been made in view of the above circumstances, and even if the gas pressure fluctuates, the fluctuation of the pressure in the drain tank can be suppressed, and any pressure fluctuation can be dealt with. It aims at providing the water seal type drain trap which comprises the water seal type drain tank pressure regulation device for ensuring a water seal, without ensuring.
[0035]
[Means for Solving the Problems]
Specific means taken for realizing the present invention will be described below.
[0036]
The present invention takes out and discharges only the drain water from a state where the toxic gas and the drain water are mixed, and the water surface inside the water-sealed pipe in which one end is inserted into the liquid in the water-sealed drain tank is water-sealed. It is a water-sealed drain trap provided with a water-sealed drain tank pressure adjusting device that operates so as not to exceed a predetermined range of piping.
[0037]
In this way, the pressure in the water-sealed drain tank is easily adjusted by controlling the flow of the liquid when the water surface inside the water-sealed pipe exceeds a predetermined range, and the other end side of the water-sealed pipe Even if the gas pressure in the tank fluctuates, the pressure in the water-sealed drain tank can be kept constant, the fluctuation of the water seal can be prevented, and the water seal can be maintained.
[0038]
Therefore, it is possible to prevent gas from leaking from the drain tank. In addition, a water-sealed state can be maintained even in an unused or unconfirmed usage state, and space saving, ease of installation, and low cost can be realized, and maintenance labor can be reduced. Furthermore, there is no need to facilitate excessive equipment such as long water-sealed piping or activated carbon.
[0039]
The water-sealed drain tank pressure adjusting device provided in the water-sealed drain trap of the present invention can be further reduced in space by being installed inside the water-sealed piping.
[0040]
Further, the water-sealed drain tank pressure adjusting device provided in the water-sealed drain trap of the present invention is the first adjustment disposed at one of the permissible boundary positions of the liquid surface in the water-sealed piping. valves and the other of the second control valve disposed in the boundary positions, a first control valve by the water surface position of the liquid corresponding to the pressure of toxic gas allowed inside the water surface of the liquid in the water seal pipe And adjusting means for opening and closing the second adjusting valve.
[0041]
For example, adjustment means and floats on the water surface inside the water seal pipe, the first control valve, a second regulating valve as a wedge-shaped valve, the first adjustment valve and the second adjustment valve damming adjusting means This may block the flow of the liquid in the drain tank. By realizing such a configuration, the above effects can be realized extremely well.
[0042]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0043]
FIG. 1 is a cross-sectional view showing the structure of a drain trap provided with a water-sealed drain tank pressure adjusting device according to the present embodiment, and the same parts as those in FIG. Omitted, here, only different parts will be described in detail.
[0044]
This water-sealed drain trap 10 is arranged in the exhaust ozone treatment device in the same state as the water-sealed drain trap 1 shown in FIG.
[0045]
A water-sealed drain tank 10 according to the present embodiment has a water-sealed pipe 11 provided with a water-sealed drain tank pressure adjusting device inside instead of the water-sealed pipe 4 provided in the conventional water-sealed drain trap 1. The point to use is different.
[0046]
The water-sealed drain tank pressure regulator in the water-sealed pipe 11 includes two pressure regulating valves 12a and 12b, which are wedge-shaped throttles inside the water-sealed pipe, and a pressure regulator that is a stopper capable of sealing this throttle portion. It is comprised from the child 12c.
[0047]
Specifically, the pressure regulating valves 12a and 12b are convex portions formed in a ring shape along the inner periphery of the water-sealed pipe. One pressure adjustment valve 12 a is disposed at the upper limit position of the water surface allowable range in the water seal pipe 11, and the other pressure adjustment valve 12 b is disposed at the lower limit position of the water surface allowable range in the water seal pipe 11. .
[0048]
Further, as the pressure regulator 12c, for example, silicon, EPDM, high pylon, vinyl chloride, or the like, which has ozone resistance and floats on water, is selected. The size of the pressure regulator 12c is equal to or smaller than the inner diameter of the water-sealed pipe 11, and is equal to or larger than the diameter of the opening in the pressure regulating valves 12a and 12b.
[0049]
When this water-sealed drain trap 10 is applied to the exhaust ozone treatment apparatus similar to that of FIG. 7, the inclined pipe is extended from the mist separator and the heating heater, and this is connected to the drain tank 2 as the water-sealed pipe 11. Inserted into the pooled water. This prevents ozone gas from leaking out of the water-sealed drain trap.
[0050]
It is desirable that the material of the water-sealed pipe 11 and the water-sealed drain tank 2 of the water-sealed drain trap 10 is made of, for example, transparent vinyl chloride so that the internal state can be monitored.
[0051]
The length of the water seal pipe 11 is selected in consideration of the fluctuation of the exhaust ozone gas pressure accompanying the pressure fluctuation of the ozone contact pond so as to be able to cope with the fluctuation of the exhaust ozone gas pressure. For example, the variation of the exhaust ozone gas pressure 100 mm H ₂ when the O occurs to the water seal pipe 11 and above 100 mm, similarly 500MmH ₂ when O occurs to more 500mm water seal pipe 11. In other cases, it can be set according to this.
[0052]
A case where the exhaust ozone gas pressure fluctuates in the water-sealed drain trap 10 having the water-sealed drain tank pressure adjusting device as described above will be described below.
[0053]
For example, it is assumed that the gas pressure is extremely increased. FIG. 2 is a cross-sectional view showing the state of the water-sealed drain trap in this case.
[0054]
In this case, the pressure regulator 12c is pushed into the pressure regulating valve 12b on the lower limit side. Thereby, it is suppressed that the gas pressure of a pressurization state is further propagated, and the inside of the drain tank 2 will not be in a pressurization state. In this situation, since the flow of the drain water and the gas is sealed by the pressure regulator 12c and the lower limit side pressure regulating valve 12b, the drain water does not flow into the drain tank 2.
[0055]
Thereafter, when the gas pressure returns from an extremely pressurized state to a steady state, the pressure regulator 12c that has sealed the lower limit side pressure regulating valve 12b is returned to the original state (for example, the state shown in FIG. 1). In addition, the drain water that has been sealed in flows into the drain tank 2.
[0056]
On the contrary, it is assumed that the gas pressure is extremely reduced. FIG. 3 is a cross-sectional view showing the state of the water-sealed drain trap in this case.
[0057]
In this case, the pressure regulator 12c is pushed into the upper pressure regulating valve 12a. Thereby, the water for sealing water in the drain tank 2 is prevented from being drawn in by the gas pressure in the decompressed state, and the inside of the drain tank 2 is not in the decompressed state. In this situation, since the flow of the drain water and the gas is sealed by the pressure regulator 12c and the lower pressure regulating valve 12a, the drain water does not flow into the drain tank 2.
[0058]
Thereafter, when the gas pressure returns from an extremely reduced pressure state to a steady state, the pressure regulator 12c that has sealed the upper pressure regulating valve 12a is returned to the original state (for example, the state as shown in FIG. 1). In addition, the drain water that has been sealed in flows into the drain tank 2.
[0059]
As described above, in the present embodiment, a large gas pressure fluctuation is propagated in the tank 2 by sealing one of the upper limit position and the lower limit position inside the water seal pipe according to the gas pressure. Can be easily adjusted without trapping, and the drain in the gas can be trapped.
[0060]
Thereby, the fluctuation | variation of the water seal in the drain tank 2 is prevented, a water seal is ensured, and it can prevent that a toxic gas leaks.
[0061]
Further, in the water-sealed drain tank 10, it is not necessary to lengthen the water-sealed piping, and a space for installing activated carbon for gas leakage is not necessary, so that the apparatus can be miniaturized. Therefore, it is easy to secure a space for disposing the water-sealed drain tank 10.
[0062]
Further, in the water-sealed drain tank 10, it is not necessary to secure a special power source, so that it can be easily installed and introduced.
[0063]
Moreover, when applying the water seal type drain tank 10, it replaces with the water seal pipe 4 of the normal water seal type drain tank 1, and introduces the water seal pipe 11 provided with the water seal type drain tank pressure adjusting device. Only need. Therefore, it is possible to reduce the cost and labor required for installing and introducing the device.
[0064]
Further, even if the water-sealed drain tank 10 is employed, since no special maintenance or expense is required, maintenance labor and equipment maintenance costs can be suppressed.
[0065]
In the present embodiment, the exhaust ozone treatment device is shown as an example, but the present invention is not limited to this, and the present invention is also applicable to other gas analyzers and gas treatment devices such as an exhaust ozone concentration meter. Is possible.
[0066]
Further, the water sealing gas is not limited to ozone, and can be applied to various gases such as a toxic gas.
[0067]
【Example】
Specific examples of the case where the drain trap provided with the water-sealed drain tank pressure adjusting device of the present invention is applied to the exhaust ozone treatment device and the case where the normal water-sealed drain trap is applied will be described below.
[0068]
FIG. 4 is a block diagram showing the configuration of the experimental system in the present embodiment. The same parts as those in FIGS. 1, 6 and 7 are denoted by the same reference numerals, and the description thereof is omitted or briefly described. Only different parts will be described in detail here.
[0069]
In the exhaust ozone treatment device 6, a normal water-sealed drain trap 1 is arranged for the mist separator 8 and the heater 9. On the other hand, in the exhaust ozone treatment device 13, a water-sealed drain trap 10 to which the present invention is applied is disposed for the mist separator 8 and the heater 9.
[0070]
Here, the pipe length of the water seal pipes 4 and 10 of the water seal drain traps 1 and 10 is 300 mm. This means that the pressure fluctuation of the exhaust ozone gas needs to be 300 mmH ₂ O or less for a normal water-sealed drain trap 1.
[0071]
Exhaust ozone gas released from the ozone contact basin 5 is introduced into each of the exhaust ozone treatment devices 6 and 13 and processed. The exhaust ozone treatment devices 6 and 13 are partitioned by partitions.
[0072]
A compound meter 14 is installed in the upper part of the ozone contact basin 5, and compound meters 15 and 16 are arranged at the inlets of the exhaust ozone treatment devices 6 and 13. Here, the measurement span of each of the compound meters 14 to 16 is set to −3000 mmH ₂ O to +3000 mmH ₂ O.
[0073]
The ozone concentration meter 17 measures the ozone concentration (leakage ozone concentration) around the water-sealed drain tank 1 of a normal water-sealed drain trap 1, and the ozone concentration meter 17 is a water-sealed drain trap to which the present invention is applied. The ozone concentration (leakage ozone concentration) around 10 water-sealed drain tanks 10 is measured.
[0074]
The above-mentioned system is operated, the indication value CP1 of the compound meter 14 installed at the upper part of the ozone contact basin 5, the indication value CP1 of the compound meter 15 installed at the inlet of the exhaust ozone treatment device 6 (using a normal water-sealed drain trap 1) ), Indicated value CP2 of the compound meter 16 installed at the inlet of the exhaust ozone treatment device 13 (use of the water-sealed drain trap 10 to which the present invention is applied), the circumference of the water-sealed drain tank 2 in the normal water-sealed drain trap 1 The measured value OZ1 of the ozone concentration meter 17 and the indicated value OZ2 of the ozone concentration meter 18 around the water-sealed drain tank 2 in the water-sealed drain trap 10 to which the present invention is applied are measured.
[0075]
FIG. 5 is a diagram showing the measurement results of CP1 to CP3, OZ1, and OZ2, with the horizontal axis representing time, the vertical axis relating to CP1 to CP3 being the coupled meter indicating value, and the vertical axis relating to OZ1 and OZ2 being the ozone concentration.
[0076]
The result of this measurement, but there is little difference in the readings of the CP1 to CP3, pressure fluctuation is intense, extends to _{+ 1500mmH 2 O~-1500mmH 2 O} .
[0077]
As described above, since the water-sealed piping is 300 mm for both of the water-sealed drain traps 1 and 10, if a differential pressure of +300 mmH ₂ O or more or −300 mmH ₂ O or less occurs, the water-sealed drain trap The water seals 1 and 10 are broken, and ozone flows out of the drain tank 2.
[0078]
When this leaked ozone is confirmed from the measured values of the ozone concentration meters 17 and 18, the leaked ozone concentration OZ1 when the normal water-sealed drain trap 1 is used is from an elapsed time of about 10 minutes when CP1 exceeds +300 mmH ₂ O. It shows a high concentration value rapidly. This is because the pressure in the drain tank 2 of the normal water-sealed drain trap 1 increases because the pressurized state of ozone gas continues, the water seal is broken, and the water in the drain tank 2 overflows outside the tank. This is thought to be due to the failure.
[0079]
Thus, when ozone leaks from the drain trap, it takes a long time to reduce the leak. In this experiment, a large pressure fluctuation occurs during this leakage, and the leakage ozone further increases.
[0080]
On the other hand, the leaked ozone concentration OZ2 when using the water-sealed drain trap 10 to which the present invention is applied shows only a slight fluctuation of 0.02 ppm to 0.04 ppm. Although there is an environmental standard of 0.06 ppm in the atmospheric standard for atmospheric pollution defined by the Pollution Control Law, this standard was not exceeded when the present invention was applied in this experiment.
[0081]
When the water-sealed drain trap 10 to which the present invention is applied is made of transparent vinyl chloride and the movement of the internal pressure regulator 12c is observed, the pressure regulating valve 12b on the lower limit side is sealed in the pressurized state, and the pressure regulating valve 12b is sealed in the decompressed state. The pressure regulating valve 12a on the upper limit side was sealed.
[0082]
Therefore, it can be understood that such a movement of the pressure regulator 12c can suppress a pressure fluctuation in the drain tank 2 and prevent leakage of ozone.
[0083]
【The invention's effect】
As described in detail above, in the water-sealed drain trap equipped with the water-sealed drain tank pressure adjusting device of the present invention, the gas pressure generated with the fluctuation of the gas generation source when removing the drain generated from the gas. It is possible to prevent the water seal from being broken due to the fluctuation, thereby preventing the gas from leaking from the drain trap.
[0084]
Further, when the water-sealed drain trap having the water-sealed drain tank pressure adjusting device of the present invention is applied, it is not necessary to secure a special installation space, the cost can be reduced, and the water-sealed drain trap can be reduced in size. .
[0085]
In addition, no special maintenance is required and installation is easy.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing the structure of a drain trap provided with a water-sealed drain tank pressure adjusting device according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view showing a state of a water-sealed drain trap when the gas pressure is in a pressurized state.
FIG. 3 is a cross-sectional view showing a state of a water-sealed drain trap when the gas pressure is reduced.
FIG. 4 is a block diagram showing the configuration of an experimental system in an embodiment of the present invention.
FIG. 5 is a graph showing the results of an experiment.
FIG. 6 is a cross-sectional view schematically showing a conventional water-sealed drain trap.
FIG. 7 is a block diagram showing an outline of a conventional waste ozone treatment apparatus.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1,10 ... Water-seal type drain trap 2 ... Drain tank 2a ... Drain discharge port 3 ... Water 4, 11 ... Water seal pipe 5 ... Ozone contact pond 6, 13 ... Waste ozone treatment device 7 ... Ozone decomposition tower 8 ... Mist separator DESCRIPTION OF SYMBOLS 9 ... Heating heater 12a, 12b ... Pressure regulating valve 12c ... Pressure regulator 14-16 ... Compound meter 17, 18 ... Ozone concentration meter

Claims (2)

In a water-sealed drain trap that takes out and discharges only the drain water from a state where toxic gas and drain water are mixed,
A water-sealed drain tank,
One end is inserted in the liquid stored in the water-sealed drain tank, and a water-sealed pipe through which the toxic gas and the drain water are conducted from the other end side,
The water seal acts to the water surface does not exceed a predetermined range of the water seal pipe inside the pipe, and the water sealing CAES drain tank pressure regulator provided in the interior of the pipe
Comprising
The water-sealed drain tank pressure adjusting device is
A first regulating valve disposed at one boundary position where the water surface of the liquid is allowed inside the water seal pipe;
A second regulating valve arranged at the other boundary position of the water surface of the liquid inside the water seal pipe;
Adjusting means for opening and closing the first adjusting valve and the second adjusting valve according to the position of the water surface of the liquid inside the water-sealed pipe according to the pressure of the toxic gas;
A water-sealed drain trap characterized by comprising: In the water-sealed drain trap according to claim 1 ,
The toxic gas is ozone;
The adjusting means floats on the water surface of the liquid inside the water-sealed pipe,
The first adjustment valve and the second adjustment valve are wedge-shaped valves and block the flow of liquid in the water-sealed drain tank by blocking the adjustment means.
This is a water-sealed drain trap .

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