KR102201560B1 - Chemical liquid supply apparatus for pipe connection type - Google Patents

Abstract

The present invention relates to a pipe connection-type chemical liquid supply apparatus which quantitatively injects a chemical liquid into groundwater pumped from an underground well to the inside of a groundwater supply pipe to store the groundwater in an upstream water tank. To this end, according to the present invention, the pipe connection-type chemical liquid supply apparatus comprises: a pipe connector connected and installed in series to the groundwater supply pipe; a chemical liquid input means bypassing groundwater from the groundwater supply pipe to temporarily store the bypassed groundwater and selectively injecting the press-filled chemical liquid into the pipe connector when the groundwater is discharged by the filling amount of the press-filled chemical liquid; and a control unit controlling the chemical liquid input means based on the flow rate of the groundwater supply pipe and a water level in the water tank. The pipe connector is formed in a shape in which a pipe diameter is reduced more than that of the groundwater supply pipe to lower the pressure of the groundwater and increase the flow rate. The chemical liquid input means comprises: a groundwater filling tank having an inlet pipe communicating with the groundwater supply pipe and a first outlet pipe communicating with the pipe connector; a chemical liquid tank forcibly supplying the chemical liquid to the inside of the groundwater filling tank by pumping pressure; and a second outlet pipe discharging the groundwater as much as the charging amount of chemical liquid solution, wherein the chemical liquid filled in the groundwater filling tank can be automatically discharged by a pressure difference between the groundwater supply pipe and the pipe connector.

Description

Pipe-connected chemical liquid supply device {CHEMICAL LIQUID SUPPLY APPARATUS FOR PIPE CONNECTION TYPE}

The present invention relates to a pipe-connected chemical liquid supply device, and more particularly, in a state in which groundwater is bypassed from the groundwater supply pipe and temporarily filled into the chemical liquid injection means, and then the groundwater is discharged by the amount of the chemical liquid charged by the chemical liquid injection means. In addition to the ability to selectively inject the chemical solution into the tube connection connector, in case of malfunction of the chemical solution injection means or power is not turned on, the tube-connected chemical solution supply device has an auxiliary chemical solution injection means capable of manually compensating for the injection of the chemical solution. About.

In general, rural areas use simple water and groundwater, so it has been recognized that clear water is supplied, and so far, it has been neglected out of interest.In addition, tank facilities such as Gansang waterway are mainly located in mountain valleys, so management has to be neglected. Chlorine sterilization treatment is required to receive drinking water, but there has been no interest in this.

As such facilities are small, it is difficult to invest enormous budgets, and the water flowing from the groundwater, groundwater, spring water, and valley water deteriorates due to environmental pollution, air pollution, and water pollution due to aging facilities. Due to the rapid increase in excess facilities and frequent occurrence of waterborne infectious diseases, there is an urgent need for a facility that provides quantitative injection of drugs capable of disinfection and sterilization.

For this purpose, liquid chlorine can be added and used, but in order to determine the amount of liquid chlorine input, it is necessary to check the amount of water stored in the reservoir tank and determine the required amount of chlorine, so there is a problem that requires specialized knowledge.

In particular, since it is necessary to determine the amount of chemical input according to the amount of water in the water tank of the drainage basin, there has been a problem that it is practically difficult to maintain residual chlorine and the hassle of having to check the amount of water stored in the water tank of the drainage basin individually.

As a device for automatically injecting a chemical liquid, a "non-powered drug quantitative input device (Korean Patent No. 0986588)" has been registered. However, since this conventional technology is connected to the water supply pipe, the chemical liquid is constant due to the water pressure interference of the water supply pipe. There was a problem not to be put in.

In addition, the conventional "non-powered drug quantitative injection device" has a problem in that when a device malfunctions, the operation of the device must be stopped during a time to repair it.

Korean Patent Registration No. 0986588

The present invention has been conceived in consideration of the above problems, and the first object of the present invention is to selectively discharge groundwater as much as the amount of the chemical liquid to be charged after temporarily filling it by bypassing groundwater from the groundwater supply pipe. It is to provide a tube-connected chemical solution supplying device that enables the injection of the press-in-filled chemical solution to the tube-body connection connector.

The second object of the present invention is to continuously supply the chemical solution to the water tank without stopping the supply of groundwater through the non-powered auxiliary chemical injection means when maintenance or power is not supplied due to a malfunction of the chemical solution injection means. By supplying, it is to provide a tube-connected chemical liquid supply device so that a time for restarting the chemical liquid injection means can be secured.

According to the features for achieving the above object, the first invention relates to a pipe-connected chemical liquid supply device for storing in an upstream water tank by quantitatively injecting a chemical liquid into the groundwater pumped from the groundwater well to the inside of the groundwater supply pipe. For this purpose, a pipe-body connection connector connected in series to the groundwater supply pipe; And, after temporarily filling the groundwater by bypassing the groundwater from the groundwater supply pipe, press-fitting selectively in a state in which groundwater is discharged as much as the filling amount of the chemical liquid to be charged. A chemical liquid input means for injecting the filled chemical liquid into the tube connection connector; And a control unit for controlling the chemical solution injection means according to the flow rate of the groundwater supply pipe and the water level in the water tank, wherein the pipe connection connector lowers the pressure of the groundwater and increases the flow rate compared to the groundwater supply pipe. It is made in this narrowing form, and the chemical solution injection means includes a groundwater filling tank having an inlet pipe in communication with the groundwater supply pipe and a first discharge pipe in communication with the pipe connection connector, and a chemical solution into the groundwater filling tank by pumping pressure. It consists of a chemical liquid tank forcibly supplied, and a second discharge pipe for discharging groundwater as much as the amount of chemical liquid is formed in the groundwater filling tank, and the chemical liquid filled in the groundwater filling tank is caused by a pressure difference between the groundwater supply pipe and the pipe connection connector. It characterized in that it is configured to be automatically discharged.

In the second invention, in the first invention, the groundwater filling tank further comprises a first solenoid valve installed in the inlet pipe, a second solenoid valve installed in the first discharge pipe, and a third solenoid valve installed in the second discharge pipe. And a fourth solenoid valve is further installed between the chemical liquid tank and the groundwater filling tank so as to adjust the amount of the chemical liquid, and a flow meter for measuring the flow rate of groundwater is further installed in the groundwater supply pipe.

In the third invention, in the first invention, the groundwater filling tank is further formed with a plurality of partition walls forming a flow path in a zigzag shape so as to lower the groundwater filling pressure and discharge groundwater as much as the filling amount of the chemical solution without leakage of the chemical solution. It is characterized.

In the fourth invention, in the first invention, when the chemical solution of the chemical solution injection means is not injected into the tube connection connector and the groundwater supply pipe, a non-powered auxiliary chemical solution injection means for compensating the chemical solution is further connected.

In the fifth invention, in the fourth invention, the auxiliary chemical solution injection means is an auxiliary tank in which a chemical liquid chamber is formed in the upper portion of the partition plate to partition the interior, and a distribution chamber through which groundwater flows is formed in the lower portion. And, it is composed of an opening and closing plate installed at an opening and closing opening formed at any one point of the partition plate, and the distribution chamber of the auxiliary tank supplies groundwater through an auxiliary inlet pipe connected to the groundwater supply pipe and an auxiliary discharge pipe connected to the pipe body connection connector. Distributed, and the opening and closing plate is characterized in that the buoyancy tank is further coupled to the lower portion so as to maintain a closed state by the groundwater flowing to the distribution chamber.

In the sixth invention, in the fifth invention, the partition plate is arranged obliquely in a diagonal shape inside the auxiliary tank so that the inputted chemical solution can be guided to the opening and closing plate having a low zone, and the groundwater is introduced into the auxiliary inlet pipe. It characterized in that the manual valve is further installed to block the.

The seventh invention, in the fifth invention, characterized in that the buoyancy tank is eccentrically fixed to the bottom of the opening and closing plate so that the opening and closing plate is kept open by its own weight, and the opening and closing plate is kept closed by buoyancy. do.

According to the pipe-connected chemical liquid supply device of the present invention, after temporarily filling the groundwater by bypassing the groundwater from the groundwater supply pipe, the chemical liquid selectively press-fitted in the state where the groundwater is discharged as much as the filling amount of the chemical liquid to be charged is automatically automatically supplied to the pipe-body connection connector. There is an effect that can be put in.

In addition, if the chemical solution cannot be automatically injected due to maintenance or power failure due to a malfunction of the chemical solution injection means, the chemical solution can be continuously supplied to the water tank without stopping the supply of groundwater through the non-powered auxiliary chemical injection means. There is an effect of securing time to restart the system.

In addition, when the chemical solution of the chemical solution injection means is a chlorine solution, there is an effect that the fluorine solution, which is another component, can be individually injected through the auxiliary chemical solution injection means.

1 is a block diagram showing a groundwater supply pipe connected from an underground water well to an upstream water tank;
2 is a configuration diagram of a pipe-connected chemical solution supply device according to a first embodiment of the present invention connected to the groundwater supply pipe of FIG. 1;
3 is a block diagram of a tube-connected chemical solution supply device according to a first embodiment of the present invention;
4 is an operation diagram of the tube-connected chemical liquid supply device according to the first embodiment of the present invention,
5 is a configuration diagram of a tube-connected chemical solution supply device according to a second embodiment of the present invention;
6 is an operation diagram of a tube-connected chemical liquid supply device according to a second embodiment of the present invention.

The following objects, other objects, features, and advantages of the present invention will be easily understood through the following preferred embodiments related to the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms.

Rather, the embodiments introduced herein are provided so that the disclosed content may be thorough and complete, and the spirit of the present invention may be sufficiently conveyed to those skilled in the art.

The embodiments described and illustrated herein also include complementary embodiments thereof.

In this specification, the singular form also includes the plural form unless specifically stated in the phrase. As used in the specification, "comprise" and/or "comprising" does not exclude the presence or addition of one or more other components.

Hereinafter, the present invention will be described in detail with reference to the drawings. In describing the specific embodiments below, various specific contents have been prepared to more specifically describe the invention and to aid understanding. However, readers who have knowledge in this field enough to understand the present invention can recognize that it can be used without these various specific contents. In some instances, it should be noted in advance that parts that are commonly known in describing the invention and are not significantly related to the invention are not described in order to avoid confusion in describing the invention.

Hereinafter, a tube-connected chemical solution supply device according to the present invention will be described in detail together with the accompanying drawings.

[Example 1]

1 is a block diagram showing a groundwater supply pipe connected from an underground water well to an upstream water tank, and FIG. 2 is a configuration of a pipe-connected chemical solution supply device according to a first embodiment of the present invention connected to the groundwater supply pipe of FIG. Fig. 3 is a block diagram of a tube-connected chemical liquid supply device according to a first embodiment of the present invention.

As shown in FIGS. 1 to 3, the present disease relates to a tube-connected chemical solution supply device for storing in an upstream water tank by quantitatively injecting a chemical solution into the groundwater pumped from the groundwater well into the groundwater supply tube.

In the tube-connected chemical supply device according to the first embodiment of the present invention, after temporarily filling the groundwater by bypassing the groundwater from the groundwater supply pipe 30, the chemical solution is selectively press-fitted in a state in which groundwater is discharged by the amount of the chemical solution to be press-fitted. It is characterized in that it can be inserted into the tubular connection connector (31).

In addition, the tube-connected chemical liquid supply device according to the first embodiment of the present invention is characterized in that it is proportional to the groundwater flow rate, and the chemical liquid can be easily quantitatively injected by measuring the water level in the water tank.

In addition, the chemical solution of the present invention is preferably any one selected from chlorine or fluorine.

The above-described pipe-connected chemical liquid supply device is largely composed of two parts, which is composed of a pipe-body connection connector 31, a chemical liquid injection means 40, and a control unit 50.

The pipe body connection connector 31 is connected in series to the downstream side of the groundwater supply pipe 30 and installed.

The pipe body connection connector 31 is configured to have an internal pipe diameter that is relatively narrower than that of the groundwater supply pipe 30 so that the internal pressure can be lowered and the flow rate can be increased.

The chemical solution injection means 40 bypasses the groundwater from the groundwater supply pipe 30 to temporarily charge the groundwater, and then discharges the groundwater by the amount of the chemical solution to be press-fitted and selectively press-fits the charged chemical solution into the tube connection connector 31 ) It functions to put a quantity into the inside.

Here, the chemical solution input means 40 is composed of a groundwater filling tank 41 and a chemical solution tank 42 forcibly filling the chemical solution into the inside of the groundwater filling tank 41 by pumping pressure.

At this time, the groundwater filling tank 41 is connected to an inlet pipe 411 so that groundwater can be supplied and filled from the groundwater supply pipe 30, and the groundwater filling tank 41 is discharged through a pipe connection connector to discharge the charged groundwater and chemicals. The first discharge pipe 412 is connected so as to be configured.

The connection structure of the groundwater filling tank 41 is such that the chemical liquid filled in the inside can be automatically discharged by the pressure difference between the groundwater supply pipe 30 and the pipe connection connector 31 having different internal pipe diameter differences. to be.

In addition, the groundwater filling tank 41 is further formed with a plurality of partition walls 41a forming a flow path in a zigzag shape so as to lower the groundwater filling pressure and discharge groundwater as much as the filling amount of the chemical solution without leakage of the chemical solution.

At this time, the groundwater filling tank 41 is further provided with a second discharge pipe 413 for separately discharging the groundwater filled by the amount of the chemical liquid, thereby providing a structure capable of quantitatively filling the liquid medicine.

Meanwhile, the control unit 50 functions to control the chemical solution injection means 40 by the flow rate of the groundwater supply pipe 30 and the water level in the water tank 20.

To this end, the groundwater filling tank 41 includes a first solenoid valve S1 installed in the inlet pipe 411, a second solenoid valve S2 installed in the first discharge pipe 412, and a second discharge pipe 413. ) Is configured to further include a third solenoid valve (S3) installed.

In addition, a fourth solenoid valve S4 is further installed between the chemical liquid tank 42 and the groundwater filling tank 41 to control the amount of the chemical liquid.

In addition, a flow meter (F) for measuring the flow rate of groundwater is installed in the groundwater supply pipe (30).

Hereinafter, the operation of the tube-connected chemical solution supply device according to the first embodiment according to the present invention will be briefly described with reference to FIG. 3 with reference to the accompanying drawings.

4 is an operation of the tube-connected chemical liquid supply device according to the first embodiment of the present invention.

First, the control unit 50 of FIG. 3 measures the internal water level in real time through the water level sensor 21 in the water tank 20.

When the water level in the water tank 20 is at a low water level, the control unit 50 operates the pump P to pump the groundwater into the groundwater supply pipe 30 from the groundwater well Groundwater is supplied to the tank 20.

At this time, the control unit 50 determines the input amount of the chemical solution compared to the supply amount of groundwater.

And the control unit 50, as shown in Figure 4 (a), the first solenoid valve (S1) and the second solenoid valve (S2) is opened, the third solenoid valve (S3), and the fourth solenoid valve ( Block S4).

Then, the groundwater pressure in the groundwater supply pipe 30 is formed relatively higher than the pipe connection connector 31, and a part of the groundwater flowing into the groundwater supply pipe 30 is bypassed to the inlet pipe 411 and the chemical is injected. It is discharged to the tubular connection connector 31 through the first discharge pipe 412 through the groundwater filling tank 41 of the means 40.

In addition, when the opened first solenoid valve S1 and the second solenoid valve S2 are closed with a rest time set within a few seconds, the groundwater filling tank 41 is filled with groundwater.

In this state, the controller 50 operates the fourth solenoid valve (S4) and the third solenoid valve (S3) with the operation of the pump (P) connected to the chemical liquid tank (42), as shown in FIG. Open.

Then, the chemical liquid in the chemical liquid tank 42 is forcibly filled into the groundwater filling tank 41, and the groundwater filled in the groundwater filling tank 41 is discharged through the second discharge pipe 413 as much as the filling amount of the chemical liquid. do.

Thereafter, when the set chemical solution is filled in the groundwater filling tank 41, the control unit 50 stops the operation of the pump P and the fourth solenoid valve S4 and the third solenoid are The valve S3 is closed.

And by simultaneously opening the 1.2 solenoid valves (S1, S2), a part of the groundwater in the groundwater supply pipe 30 is diverted to the groundwater filling tank 41, and the chemical liquid filled in the groundwater filling tank 41 is transferred to the groundwater supply pipe. Make sure to be supplied to (30).

In addition, the control unit 50 continuously measures the flow rate of the groundwater supply pipe 30 through the flow meter F and determines whether the pump P is stopped when the water tank 20 reaches the full water level.

The supply of such chemicals is operated at the beginning of groundwater pumping, and after that, only groundwater is continuously supplied to the water tank.

At this time, if the water level of the water tank 20 becomes full and the pump stops operating, the groundwater supply pipe 30 remains only groundwater, so even if the residual groundwater in the groundwater supply pipe 30 flows back to the groundwater well 10 It is possible to prevent the groundwater wells 10 from being contaminated from the chemical solution.

[Example 2]

5 is a block diagram of a tube-connected chemical liquid supply device according to a second embodiment of the present invention.

As shown in Fig. 5, the second embodiment includes the first embodiment, but when the chemical solution of the chemical solution injection means 40 is not injected, a non-powered auxiliary chemical solution injection means 60 for compensating for the chemical solution that is not injected. This is a more connected configuration.

This auxiliary chemical solution injection means 60 can minimize energy consumption with no power supply, and functions to compensate for the manual injection of the chemical solution when the chemical solution injection means 40 malfunctions or power is not turned on.

As another example, in the second embodiment, when the chemical solution of the chemical solution injection means 40 is a chlorine solution, a fluorine solution, which is another component, may be individually injected.

The auxiliary chemical solution injection means 60 is connected to the pipe connection connector 31 and the groundwater supply pipe 30, and the chemical solution chamber 611 in which the chemical solution is stored in the upper part around the partition plate 613 that divides the interior. ) Is formed, and is composed of an auxiliary tank 61 in which a distribution chamber 612 through which groundwater flows is formed.

At this time, the distribution chamber 612 of the auxiliary tank 61 collects groundwater through an auxiliary inlet pipe 612a connected to the groundwater supply pipe 30 and an auxiliary discharge pipe 612b connected to the pipe connection connector 31. It is configured to be distributed.

In the above, the distribution chamber 612 of the auxiliary tank 61 is configured such that groundwater can always be distributed.

In addition, a manual valve (V) for blocking the inflow of groundwater is further installed in the auxiliary inlet pipe 612a.

In addition, an opening 613a is formed at any one point of the partition plate 613, and an opening/closing plate 614 is installed in the opening 613a.

At this time, the partition plate 613 is arranged inclined in a diagonal shape inside the auxiliary tank 61 so that the input chemical can be guided to the opening and closing plate 614 having a low zone, so that the residual chemical liquid does not remain.

In addition, the opening and closing plate 614 is further coupled to the bottom of the buoyancy tank 614a so as to maintain a closed state by the groundwater flowing into the distribution chamber 612.

The buoyancy tank 614a is eccentrically fixed to the bottom surface of the opening and closing plate 614 so that the opening and closing plate 614 is kept open by its own weight, and the opening and closing plate 614 is formed by buoyancy. It functions to keep it closed.

More specifically, the opening and closing plate 614 maintains a closed state by generating buoyancy by the groundwater circulating inside the distribution chamber 612, and conversely, eccentrically coupled when the groundwater in the distribution chamber 612 does not flow. It is configured to be opened by the weight of the buoyancy tank (614a).

Meanwhile, a stopper 615 for limiting the degree of opening of the opening/closing plate 614 is further coupled to the distribution chamber 612 to prevent the opening/closing plate 614 from being excessively opened.

Hereinafter, the operation of the tube-connected chemical liquid supply device according to the second embodiment according to the present invention will be described briefly.

6 is an operation diagram of a tube-connected chemical liquid supply device according to a second embodiment of the present invention.

When the chemical solution cannot be automatically injected due to maintenance or power failure due to a malfunction of the chemical solution injection means 40, the chemical solution may be temporarily supplied manually through the auxiliary chemical solution injection means 60.

Therefore, the user can continuously supply the chemical solution to the water tank 20 without interrupting the supply of groundwater, thereby securing a time for restarting the chemical solution input means 40.

The auxiliary chemical solution injection means 60 measures and stores the chemical solution in the chemical solution chamber 611 in the auxiliary tank 61.

At this time, as shown in (a) of FIG. 6, the auxiliary inlet pipe 612a and the auxiliary discharge pipe 612b are always open and groundwater is circulated, so the distribution chamber 612 of the auxiliary tank 61 Will maintain the full water level.

Therefore, since the opening and closing plate 614 installed in the partition plate 613 is constantly closed by the buoyancy of the buoyancy cylinder 614a, the chemical liquid stored in the chemical liquid chamber 611 does not leak. It keeps the state stored in (611).

Thereafter, as shown in (b) of FIG. 6, when the user shuts off the manual valve (V) of the auxiliary inlet pipe (612a), the groundwater stored in the distribution chamber 612 is reduced to the low water pressure of the pipe body connection connector 31. By this, the auxiliary discharge pipe 612b is discharged.

Then, the water level of the distribution chamber 612 is lowered, and the opening and closing plate 614 is opened by the weight of the buoyancy cylinder 614a to drop the stored chemical solution in the chemical chamber 611 into the distribution chamber 612, The chemical liquid dropped into the distribution chamber 612 is automatically supplied to the inside of the pipe connection connector 31 through the auxiliary discharge pipe 612b, so that the chemical liquid together with the groundwater can be temporarily supplied to the upstream water tank 20.

Since the embodiments described in this specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention and do not represent all the technical spirit of the present invention, various equivalents that can replace them at the time of application And it should be understood that there may be variations.

10: groundwater well
20: water tank 21: water level sensor
30: underground water supply pipe 31: pipe connection connector
40: chemical solution input means 41: groundwater filling tank 41a: bulkhead
411: inlet pipe 412: first discharge pipe
413: second discharge pipe 42: chemical liquid tank
50: control unit
60: auxiliary chemical liquid input means 61: auxiliary tank 611: chemical liquid chamber
612: distribution room 612a: auxiliary inflow pipe
612b: auxiliary discharge pipe 613: partition plate
613a: opening 614: opening plate
614a: buoyancy box 615: stopper
P: Pump S1: First solenoid valve S2: Second solenoid valve
S3: 3rd solenoid valve S4: 4th solenoid valve F: Flow meter
V: manual valve

Claims (7)

In the chemical solution supply device for storing in the upstream side water tank 20 by quantitatively injecting a chemical solution into the groundwater pumped from the groundwater well 10 into the groundwater supply pipe 30,
A pipe body connection connector 31 connected in series to the groundwater supply pipe 30;
After the groundwater is temporarily charged by bypassing the groundwater from the groundwater supply pipe 30, a chemical solution input means for selectively injecting the charged chemical solution into the pipe body connection connector 31 in a state where the groundwater is discharged by the amount of the chemical solution to be press-fitted. 40); And
Including; a control unit 50 for controlling the chemical solution injection means 40 by the flow rate of the groundwater supply pipe 30 and the water level in the water tank 20,
The pipe body connection connector 31 is made in a form having a narrower pipe diameter than the groundwater supply pipe 30 so as to lower the pressure of the groundwater and increase the flow rate,
The chemical solution input means 40 includes a groundwater filling tank 41 having an inlet pipe 411 in communication with the groundwater supply pipe 30 and a first discharge pipe 412 in communication with the pipe connection connector 31, and the groundwater It consists of a chemical liquid tank 42 forcibly supplying the chemical liquid into the interior of the filling tank 41 by pumping pressure,
The groundwater filling tank 41 further includes a second discharge pipe 413 for discharging groundwater as much as the filling amount of the chemical solution,
The chemical liquid filled in the groundwater filling tank 41 is configured to be automatically discharged by a pressure difference between the groundwater supply pipe 30 and the pipe connection connector 31,
When the chemical solution of the chemical solution input means 40 is not injected into the tube connection connector 31 and the groundwater supply tube 30, a non-powered auxiliary chemical solution injection means 60 for compensating the chemical solution is further connected,
The auxiliary chemical solution input means 60 has a chemical solution chamber 611 in which the chemical solution is stored in the upper part with the center of the partition plate 613 partitioning the interior, and a distribution chamber 612 through which groundwater flows is formed in the lower part. Consisting of an auxiliary tank 61 and an opening/closing plate 614 installed at an opening 613a formed at any one point of the partition plate 613,
The distribution chamber 612 of the auxiliary tank 61 distributes groundwater through an auxiliary inlet pipe 612a connected to the groundwater supply pipe 30 and an auxiliary discharge pipe 612b connected to the pipe connection connector 31. ,
The opening and closing plate 614 is a tubular connection type chemical supply device, characterized in that the buoyancy tank (614a) is further coupled to the lower portion so as to maintain a closed state by the groundwater flowing to the distribution chamber (612).
According to claim 1
The groundwater filling tank 41 includes a first solenoid valve (S1) installed in the inlet pipe 411, a second solenoid valve (S2) installed in the first discharge pipe 412, and a second discharge pipe 413. Further comprising a third solenoid valve (S3) to be installed,
A fourth solenoid valve (S4) is further installed between the chemical liquid tank 42 and the groundwater filling tank 41 to control the amount of the chemical liquid,
A flow meter (F) for measuring the flow rate of groundwater is further installed in the groundwater supply pipe (30).
The method of claim 1,
The groundwater filling tank 41 is a pipe, characterized in that a plurality of partition walls 41a are further formed to form a flow path in a zigzag shape so as to lower the groundwater filling pressure and discharge groundwater as much as the filling amount of the chemical solution without leakage of the chemical solution. Connection type chemical liquid supply device.
delete delete The method of claim 1,
The partition plate 613 is arranged to be inclined in a diagonal shape inside the auxiliary tank 61 so that the injected chemical liquid can be guided to the opening and closing plate 614 with a low zone,
The auxiliary inlet pipe (612a) is a pipe-connected chemical supply device, characterized in that the manual valve (V) is further installed to block the inflow of groundwater.
The method of claim 1,
The buoyancy tank 614a is eccentrically fixed to the bottom of the opening and closing plate 614 so that the opening and closing plate 614 is kept open by its own weight, and the opening and closing plate 614 is closed by buoyancy. Tube-connected chemical liquid supply device, characterized in that.

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