JPS5924334Y2 - liquid supply device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus suitable for supplying one type of liquid to a plurality of liquid tanks in which the priority order of liquid supply is determined in advance.

For example, in an exhaust gas deodorization device that removes malodorous components contained in exhaust gas using an appropriate absorption liquid, multiple liquid tanks are provided for the required purpose. Because it is necessary to accurately supply the required amount of chemical solution to the tank, it is equipped with the same number of pumps as there are liquid tanks, and as a result, the deodorization equipment has disadvantages such as being large and expensive. Ta.

However, among the multiple liquid tanks mentioned above, there are liquid tanks that must be supplied with chemical liquid immediately upon request, and liquid tanks that can be supplied with a slight delay in time, and this point has been ignored in the past. The above-mentioned problems occurred because the chemical solution supply piping was done in a similar manner.

The present invention was developed in view of the above circumstances, and its purpose is to provide a liquid supply device that can accurately send liquid to multiple liquid tanks according to priority order using one pump. be.

Hereinafter, an example in which the present invention is applied to an exhaust gas deodorizing device will be described in detail based on the drawings.

An absorption liquid tank 2 is provided at the lower part of the absorption tower 1 for bringing the exhaust gas into contact with the absorption liquid, and the absorption liquid tank 2 has a horizontally extending branch pipe branched from the upper end of the main pipe 3 extending upward. The main pipe 3 is connected to a discharge port of a pump 6 which communicates with a storage tank 5 of the chemical liquid.

In addition, a branch pipe 8 with an on-off valve 7 extending parallel to the branch pipe 4 is connected to the middle position of the main pipe 3, and the tip opening 8a of the branch pipe 8 is connected to a neutralizer provided below the absorption liquid tank 2. Facing tank 9.

Note that the discharge amount of the pump 6 is adjusted to an amount that can be delivered to only one of the branch pipes 4 and 8.

In addition, PHHIO211 is installed in the absorption liquid tank 2 and the neutralization tank 9.
are provided respectively, and PHHIO2 and 11 are connected to the conductor 12.
．． 13 to the pump 6, and the PH meter 1
1 is further connected to an on-off valve 7 via a conducting wire 14, and the pump 6 is operated or stopped by a signal from the PHHIO 211, and the on-off valve 7 is opened and closed by a signal from a PH meter 11. .

In addition, 15 is a pump for sending the absorption liquid in the absorption liquid tank 2 to the upper part of the absorption tower 1 and the neutralization tank 9 via piping 16 and 17, and 18 is a pump for stirring the inside of the neutralization tank 9. It is a stirring device.

Note that the neutralization tank 9 is for treating waste liquid,
It is necessary to receive the supply of chemical liquid at the same time as the request, and the priority is higher than that of the absorption liquid tank 2.

With this configuration, when it is necessary to supply chemical liquid to the absorption liquid tank 2 and the Okiwa tank 9, PHHFO2 and 1
1 opens the on-off valve 7 and the pump 6
operates and the chemical solution is discharged from the pump 6, but since the branch pipe 8 is located at a lower location than the branch pipe 4 and the discharge amount of the pump 6 is fixed, the drug solution does not flow into the branch pipe 4 but flows into the branch pipe 8. Subsequently, the light flows through the branch pipe 8 and the on-off valve 7, is released from the light flow opening 8a, and is supplied to the neutralization tank 9.

When the required amount of chemical liquid is supplied to the neutralization tank 9 in this way, the on-off valve 7 is closed by a signal from the PH meter 11, and the chemical liquid from the pump 6 flows through the main pipe 3 and branch pipe 4 and is released from the tip opening 4a. and supplied to the absorption liquid tank 2.

When the required amount of chemical liquid is supplied to the absorption liquid tank 2 in the same manner as the neutralization tank 9, the pump 6 is stopped by a signal from PHHFO2, etc., and the supply of the chemical liquid to the absorption liquid tank 2 is stopped.

It should be noted that if there is a request for a chemical from the neutralization tank 9 while the chemical is being supplied to the absorption liquid tank 2, the supply to the branch pipe 4 is interrupted and the same operation as described above is performed.

Furthermore, if the requests from the respective liquid tanks do not overlap, the chemical solution is immediately supplied to each liquid tank.

Although the above embodiment is a case where there are two branch pipes, the present invention can also be applied to a case where there are three or more branch pipes.

In other words, the plurality of branch pipes are connected to the main pipe extending upward from the discharge port of the pump at appropriate intervals in the vertical direction. , other branch pipes are sequentially arranged at higher ranks according to this priority order, and the branch pipe with the last priority order is positioned at the top.

All branch pipes except the top one are equipped with on-off valves that open and close according to instructions from the detectors in the communicating liquid tanks.

By doing so, even if all the on-off valves are opened as mentioned above, or even when an appropriate number of on-off valves are opened, the specified liquid will be released in order from the lower one in the branch pipe where the on-off valves are opened. become.

As is clear from the above description, in the present invention, a plurality of branch pipes are arranged in the vertical direction, and are sequentially arranged from bottom to top according to the priority order of the liquid sent to these pipes, and communicate with the pump. All but the highest branch pipes connected to the main pipe extending upward were equipped with on-off valves, so that one pump could handle multiple liquids in priority order. The required liquid can be reliably supplied, and the device employing the present invention has excellent practical effects, such as being extremely inexpensive.

[Brief explanation of drawings]

The drawing is a front view showing an embodiment of the present invention. 2: Absorption liquid tank, 4: Branch pipe, 6: Pump, 7: Open/close valve, 8
: Branch pipe, 9: Neutralization tank, 10.11: PH meter.

Claims (1)

[Scope of utility model registration request] A plurality of branch pipes are branched at appropriate intervals in the vertical direction to a main pipe that communicates with the discharge port of the pump and extends upward, and
The plurality of branch pipes are connected to the liquid tank having the highest priority for liquid demand in order from the one piped at the lower level, and on-off valves are installed in all the branch pipes except the highest one among the branch pipes, and the on-off valve is . A liquid supply device, characterized in that the device is electrically connected to a suitable detector installed in a liquid tank connected to each branch pipe and communicating with the pump.