JPH09249291A - Water-sealed tank device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the manipulation to supply a drug to and discharge it from a drug tank without the use of an expensive electromagnetic valve and pressure gauge. SOLUTION: To a drug tank one end of a gas pipe 12 is connected. At the other end of the gas pipe 12 a water-sealed tank 13 containing a deodorizing solution is provided. The water-sealed tank 13 is composed of a reserve tank 21 connected with the second-mentioned end of the gas pipe 12 and having a communicating hole 31 therefor and a main tank 22 having an air hole 34 open to the outside air. A trap pipe 23 and a return pipe 24 are provided each in a manner of joining the reserve tank 21 and main tank 22. The trap pipe 23 has one end open in the reserve tank 21 at its top and the other end open in the main tank 22 at a lower level than the opposite end. The return pipe 24 has one end open in the reserve tank 21 at its bottom and the other end open in the main tank 22 at a lower level than the opposite end.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water sealed tank device for preventing odorous gas from scattering from a chemical tank to the atmosphere.

[0002]

2. Description of the Related Art As an apparatus of this type, as shown in FIG. 3, one end of a gas pipe 42 is connected to a chemical tank 41, and a deodorizing solution-filled water sealing tank 43 is provided at the other end of the gas pipe 42. The sealed tank 43 has an insertion hole 44 into which the other end of the gas pipe 42 is inserted and a vent port 45 open to the atmosphere,
Further, the chemical tank 41 is provided with a pressure gauge 46 on the chemical tank 11, and an air pipe whose one end is open to the atmosphere.
It is known that the other end of 47 is connected and the air pipe 47 is provided with a solenoid valve 48.

In this device, when supplying the medicine to the medicine tank 41, the electromagnetic valve 48 is closed, and the odorous gas generated in the medicine tank 41 is increased by the pressure of the medicine tank 41 rising as the medicine is supplied. It is sent to the water-sealed tank 43 through the guy pipe 42, immersed in the solution in the water-sealed tank 43 for purification, and then released to the atmosphere.On the other hand, when discharging the chemical from the chemical tank 41, the solenoid valve 48 is opened. While monitoring the pressure gauge 46, air is introduced from the atmosphere into the chemical tank 41 so that the chemical tank 41 does not have a negative pressure.
The solution inside is prevented from flowing back into the chemical tank.

[0004]

The above device requires a pressure gauge and a solenoid valve, which makes the device expensive.
When supplying and discharging the chemicals to and from the chemicals tank, it was necessary to control the pressure inside the chemicals tank based on a pressure gauge and a solenoid valve.

An object of the present invention is to provide a water-sealed tank device which does not require an expensive pressure gauge and a solenoid valve, and can easily supply and discharge chemicals to and from a chemical tank.

[0006]

In the water-sealed tank device according to the present invention, one end of a gas pipe is connected to a chemical tank,
A dewatering solution-filled water seal tank is provided at the other end of the gas pipe, and the water seal tank has a communication port connected to the other end of the gas pipe and a vent port open to the atmosphere. The tank is composed of a reserve tank having a communication port and a main tank having a ventilation port.A trap pipe and a return pipe are arranged in the reserve tank and the main tank so as to straddle the reserve tank and the main tank, respectively, and one end opening of the trap pipe is the reserve tank. While facing the inner top, the other end opening is exposed to a lower level than the one end opening of the trap pipe in the main tank, one end opening of the return pipe is exposed to the bottom inside the reserve tank, and the other end opening is the main In the tank, face the lower level than the opening of one end of the return pipe. And it is characterized in that they are.

In the water-sealed tank device according to the present invention, the water-sealed tank is composed of a reserve tank having a communication port and a main tank having a ventilation port, and the trap pipe and the main tank have a trap pipe and a main tank. A return pipe is arranged, one end opening of the trap pipe faces the top of the reserve tank, and the other end opening faces a lower level than the one end opening of the trap pipe in the main tank.
One end opening of the return pipe is exposed to the bottom of the reserve tank, and the other end opening is exposed to a lower level than the one end opening of the return pipe in the main tank. When the pressure in the chemical tank rises and the odorous gas generated in the chemical tank is sent to the reserve tank of the water-sealed tank through the gas pipe, the sent odorous gas is guided from the reserve tank to the main tank by the trap pipe. After being immersed in the solution stored in the tank and purified, it is released into the atmosphere from the vent, and when the chemical is discharged from the chemical tank, the pressure inside the chemical tank decreases and the inside of the reserve tank of the water seal tank When a negative pressure is reached, the solution in the main tank is sent to the reserve tank, The click may become negative pressure is prevented, therefore, without solution in the water seal tank from flowing back to the chemical tank, the solution sent to the reserve tank is returned to the main tank by a return pipe.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to FIGS.

Referring to FIG. 2, the water seal tank device comprises a gas pipe 12 having one end connected to the chemical tank 11 and a water seal tank 13 provided at the other end of the gas pipe 12.

A chemical supply pipe 14 and a chemical discharge pipe 15 are connected to the chemical tank 11, respectively. The chemical discharge pipe 15 is provided with a liquid feed pump 16.

As shown in detail in FIG. 1, a water seal tank 13
Consists of a parallel reserve tank 21 and a main tank 22. A trap pipe 23 and a return pipe 24 are arranged in the reserve tank 21 and the main tank 22, respectively, so as to straddle them.

The top wall of the reserve tank 21 and the top wall of the main tank 22 are flush with each other. The bottom wall of the reserve tank 21 is at a higher level than the bottom wall of the main tank 22.

A communication port 31 and an upward pipe connection hole 32 are provided on the top wall of the reserve tank 21. The other end of the gas pipe 12 is connected to the communication port 31. A downward pipe connecting hole 33 is provided in the bottom wall of the reserve tank 21. A vent hole 34 and a pipe insertion hole 35 are provided on the top wall of the main tank 22. The ventilation port 34 is connected to the other end of a ventilation pipe 36 whose one end is open to the atmosphere. A leftward pipe connection hole 37 is provided near the lower end of the peripheral wall of the main tank 22.

The trap pipe 23 has a substantially inverted J shape and has a downward upper end opening connected to the upward pipe connecting hole 32 and a downward lower end opening reaching near the bottom wall of the main tank 22 and having a pipe inserted therein. It has a vertical portion that is penetrated by the hole 35.

The return pipe 24 is substantially L-shaped,
It has an upward upper end opening connected to the downward pipe connection hole 33 and a right downward end opening connected to the left pipe connection hole 37.

The deodorizing solution L is stored in the water-sealed tank 13 over the lower portions of the reserve tank 21 and the main tank 22. If the chemical in the chemical tank is an acidic chemical,
Solution L is an alkaline solution such as sodium hydroxide.

The capacity of the reserve tank 21 is the water-sealed tank 13
It is set to be larger than the total amount of the solution L stored in. Therefore, even if the total amount of the solution L enters the reserve tank 21, the solution does not leak from the reserve tank 21 through the communication hole 31.

When supplying a chemical to the chemical tank, the chemical level in the chemical tank 11 rises as the chemical is fed into the chemical tank, and the pressure in the chemical tank 11 rises accordingly. As the pressure in the chemical tank 11 rises, the odorous gas generated in the chemical tank 11 passes through the gas pipe 12 to the reserve tank 21 of the water seal tank 13.
Sent to. The odorous gas fed into the reserve tank 21 is guided to the main tank 22 by the trap pipe 23 and discharged and immersed in the solution L in the main tank 22, whereby the odorous gas and the solution L are brought into contact with each other. As a result, the odorous gas is deodorized, and the deodorized gas is discharged into the atmosphere through the ventilation port 34.

When the medicine is discharged from the medicine tank 11, the medicine level in the medicine tank 11 decreases as the medicine is discharged from the medicine tank 11, and the pressure in the medicine tank 11 decreases accordingly. To do. Then, although the inside of the reserve tank 21 of the water seal tank 13 is about to become a negative pressure, the solution L in the main tank 22 is sucked up by the trap pipe 23, and at the same time, the outside air is introduced into the main tank 22 from the ventilation port 34. Inflow. As the solution in the main tank 22 is sucked up, the level of the solution L in the main tank 22 decreases, and the level of the solution in the reserve tank 22 increases. This prevents negative pressure in the reserve tank 22. This prevents the solution L in the water seal tank 13 from flowing back to the chemical tank 11.

When the solution level in the main tank 22 falls below the lower end level of the trap pipe 23, the trap pipe
The outside air flowing into the main tank 22 is sucked in through the lower end opening of the 23, and the solution in the trap pipe 23 is stored in the reserve tank.
All are discharged into 21. Then, the reserve tank 21
The solution transferred inside is returned to the main tank 22 through the return pipe 24. By repeating this, the seal of the water seal tank 13 is always fulfilled.

As described above, odorous gas is prevented from being emitted into the atmosphere in both cases of supplying and discharging the chemicals to and from the chemical tank 11.

[0022]

According to the present invention, it is possible to easily carry out the operation of supplying and discharging the chemical to and from the chemical tank without using an expensive solenoid valve and pressure gauge.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a chemical tank using a water sealing tank device according to the present invention.

FIG. 2 is a vertical cross-sectional view showing details of a water sealing tank of the water sealing tank device.

FIG. 3 is a configuration diagram corresponding to FIG. 1 showing a conventional example.

[Explanation of symbols]

 11 Chemical tank 12 Gas tank 13 Water seal tank 21 Reserve tank 22 Main tank 23 Trap pipe 24 Return pipe 31 Communication port 34 Vent port

Claims (1)

[Claims] 1. A chemical tank 11 is connected to one end of a gas pipe 12, and the other end of the gas pipe 12 is provided with a deodorizing solution-filled water sealing tank 13, and the water sealing tank 13 is connected to the other end of the gas pipe 12. In a water-sealed tank device having a port 31 and a ventilation port 34 open to the atmosphere, the water-sealing tank 13 is composed of a reserve tank 21 having a communication port 31 and a main tank 22 having a ventilation port 34. 21 and the main tank 22, a trap pipe 23 and a return pipe 24 are arranged so as to straddle these, respectively, and one end opening of the trap pipe 23 faces the top of the reserve tank 21 and the other end opening is inside the main tank 22. At a lower level than the one end opening of the trap pipe 23, and one end opening of the return pipe 24 faces the bottom inside the reserve tank 21. , Water seal tank apparatus characterized by the other end opening is to face the lower level than the opening at one end of the return pipe 24 in the main tank 22.