KR20120085995A - Water supply device for groundwater recycling - Google Patents

Abstract

PURPOSE: A water supply device for a sump tank for recycling underground water is provided to prevent damage to a water supply pump by removing foreign materials from a filter net of the water supply pump. CONSTITUTION: A water supply device for a sump tank for recycling underground water comprises a water supply pump(2), a pressure tank(4) for pump operation, an air chamber(9), a connection pipe(11), and an overcharge air exhaust port(15). The water supply pump is installed inside a sump tank(20) and has a filter net(2a). A first discharge pipe(3) is connected to the water supply pump. The pressure tank is installed outside the sump tank and has a pressure switch. The pressure switch operates or stops the sump tank. A second discharge pipe(5) is connected to the pressure tank. The air chamber is installed on the top end of the first discharge pipe and has an air suction check valve(9a). The connection pipe is connected between the pressure tank and the air chamber through a backflow prevention check valve(10). The overcharge air exhaust port is installed on the top of the pressure tank.

Description

Water supply device for groundwater recycling

The present invention relates to a water collecting device for a collecting tank for ground water recycling, and more particularly, the air is compressed in the air chamber installed at the upper end of the discharge pipe by the discharge pressure of the water supply pump when the water supply pump is started. When the air compressed in the air chamber is expanded, it stops water hammer as it expands and removes foreign substances adsorbed on the filter network of the water supply pump, thereby degrading the water supply performance due to water damage and adsorption of foreign substances. It is possible to prevent the water supply pump from being burned out, and the air collected in the discharge pipe and the air chamber is compressed by the discharge pressure of the water supply pump when the water supply pump is started, and it is automatically replenished into the pressure tank for starting the pump. When the pump is stopped for a long time, the air layer inside the pressure tank for pump start disappears Since the start and stop of the feed water pump is frequently repeated, the feed water pump can be prevented from being burned out, and the durability can be greatly improved.In addition, when the feed water pump is started, the discharge pressure of the feed water pump is applied to the inside of the discharge pipe and the air chamber. When the air is overcharged inside the pressure tank for pump operation, it is configured to be discharged automatically to the outside of the tank through the overcharged air outlet to enable the pump operation at the same level regardless of the pressure control. In addition, the groundwater flowing into the inside of the pump starting pressure tank at the start of the feedwater pump is separated into water and air by the water separation pipe to maximize the air filling amount compared to the same tank. Not only increases the pressure, but also discharges it into the pump starting pressure tank. The present invention relates to a water collecting device for a sump for groundwater recycling, which can prevent the groundwater from being fed into the air mixed state to further improve the water supply quality.

In general, underground facilities or buildings such as subway stations, tunnels, power stations, and telecommunications areas are subject to groundwater recycling if the daily groundwater inflow exceeds a certain amount according to the provisions of Article 9-2 (Use of Sewage Groundwater, etc.) Since a plan must be established and operated, reliability of the operation of the system is required for facilities supplying water by pressurizing the facilities and the water supply pump in the building.

Most of the conventional water tank for water tanks installed in such underground facilities or buildings is installed in the water tank 20 in which ground water is stored, as shown in FIG. 1, and a water supply pump having a filter net 31a at the suction end thereof. 31, a discharge pipe 32 which is connected to the discharge end of the feed water pump 31 and provided with a corrugated pipe 32a, a check valve 32b for preventing backflow, a locking valve 32c at a predetermined position, and A pump starting pressure tank 33 having a pressure switch 33a for starting and stopping the feed water pump 31 according to a pressure change inside the tank and installed at the outside of the collecting tank 20 and the discharge pipe ( 32) and a connecting pipe 34 connecting the pump starting pressure tank 33.

In the conventional water collection device for the water collecting tank 30 configured as described above, as the groundwater stored in the pressure tank 33 for starting the pump is used, the internal pressure of the pump starting pressure tank 33 is lowered below the set pressure range. When the water supply pump 31 is started by the pressure switch 33a, the groundwater stored in the collection tank 20 is supplied to the inside of the pump starting pressure tank 33, and the groundwater stored in the collection tank 20 is When the internal pressure of the pump starting pressure tank 33 rises above the set pressure range as the water is supplied, the water supply pump 31 is stopped by the pressure switch 33a and the water supply is stopped.

However, when water is supplied to the ground water using the conventional water tank for the water collecting tank configured as described above, there are the following problems.

First, foreign matters are introduced into the collecting tank 20 installed underground due to the characteristics of the groundwater recycling facility. When the foreign matters are adsorbed to the filtering net 31a of the feed water pump 31 or are caught in the filtering hole, the filtering net 31a is closed. Since the water supply is not made smoothly, the water supply capacity is significantly lowered and the power consumption is increased, and in severe cases, the water supply pump 31 is burned out.

Second, there are cases where foreign matter such as large particles and small particles are mixed in the groundwater flowing into the collecting tank 20 installed underground, and when such foreign matter is adsorbed to the filtration network 31a of the feed water pump 31, the feed water pump is heavy. (31) is removed by lifting out of the sump (20) or the operator directly enters into the sump (20) to periodically check and remove the foreign matter adsorbed to the filter net (31a) of the feed water pump (31), feed water pump (31) In order to prevent foreign matters from being adsorbed on the filter net 31a, management difficulties existed.

Third, unlike water supply facilities, in the case of the water supply system of groundwater recycling facilities, when foreign substances and sediment flows directly into the groundwater recycling facility through the water supply system, operational problems such as failure of the facilities occur. In the case of adopting the dual supply method leading to sedimentation and resupply, the construction cost is excessive due to the installation of related facilities such as sedimentation facilities and the maintenance is cumbersome due to the dual management.

Fourth, the pump starting pressure tank 33 used in the conventional water tank for the water collecting tank is a phenomenon that the air stored in the tank is dissolved in water and the air layer in the tank disappears as the use time elapses. Likewise, when the air layer in the tank disappears, the pressure switch 33a for controlling the start and stop of the feed water pump 31 is operated sensitively, so that the start and stop of the feed water pump 31 are frequently repeated. Since 31) may be burned out, there is a problem in that maintenance is cumbersome because air must be replenished periodically in the tank to prevent burnout of the feed water pump 31.

The present invention is to solve the above problems, the air is compressed in the air chamber installed in the upper end of the discharge pipe by the discharge pressure of the feed water pump when the feed water pump is started is compressed in the air chamber when the feed water pump is stopped As the existing air expands, it prevents water hammer and removes foreign substances adsorbed on the filter network of the water supply pump, preventing water supply pump damage caused by water hammer, deterioration of water supply performance due to adsorption of foreign substances, and damage of the water supply pump. It is a technical task to make it possible.

In addition, the present invention is configured so that the air trapped in the discharge pipe and the air chamber by the discharge pressure of the feed water pump at the time of starting the feed water pump is automatically replenished to the inside of the pressure tank for pump start for a long time pump stop The technical problem is to prevent the water supply pump from being burned out due to the frequent disappearing of the air supply inside the pressure tank for starting the pump and the repeated start and stop of the water supply pump.

In addition, the present invention, when the air in the discharge pipe and the air chamber is overcharged by the discharge pressure of the feed water pump at the start of the feed water pump to the outside of the tank through the overcharge air outlet quickly and automatically It is a technical problem to enable the pump operation at the same level irrespective of the pressure control by configuring to be discharged in order to significantly improve the reliability of the operation.

In addition, the present invention is configured so that the groundwater flowing into the pressure tank for pump start when the feed water pump is started to be separated into water and air by the water separation pipe to maximize the amount of air filling compared to the same tank water supply efficiency Not only to further increase, but also to prevent the groundwater discharged from the pump starting pressure tank to be supplied to the air mixed state is characterized in that to further improve the water supply quality.

The present invention for achieving the above technical problem is to be installed in the interior of the collection tank in which the groundwater is stored, the suction end is provided with a filtering network and the discharge end is connected to the first discharge pipe protruding to the outside of the collection tank, and It is installed on the outside of the collection tank and is provided with a pressure switch for starting and stopping the water supply pump according to the pressure change in the tank, and the lower one side is connected to the second discharge pipe for supplying the groundwater stored in the tank to the water supply pipe Pressure tank, an air chamber installed at an upper end of the first discharge pipe, and having an air suction check valve on one outside thereof, and a check valve for preventing a backflow between the pump starting pressure tank and the air chamber. One end is inserted into the pump starting pressure tank and the other end is connected to the air. The other end portion inserted into the burr and inserted into the air chamber is connected to the connection pipe having a downward bent portion and is installed on one side of the upper portion of the pump starting pressure tank, and inserted into the pump starting pressure tank. One end of the air discharge pipe is formed vertically, and the other end protruding to the outside of the pump starting pressure tank is characterized in that it comprises an overcharged air outlet provided with an air discharge valve.

In addition, the present invention is a vertical separation pipe is formed at one end of the connection pipe inserted into the inside of the pressure tank for pump start, the top of the water separation pipe is installed with a separation valve, the water separation pipe The lower end of the hemispherical body is characterized in that the cap for separating the water is configured to be attached to the perforated plate attached.

In addition, the present invention is characterized in that between the first discharge pipe and the second discharge pipe is provided with a connection pipe provided with an solenoid valve for air charging.

As described above, in the water collecting tank water supply apparatus for groundwater recycling according to the present invention, the air is compressed inside the air chamber installed at the upper end of the discharge pipe by the discharge pressure of the feedwater pump when the feedwater pump is started, and then the air is stopped when the feedwater pump is stopped. As the compressed air in the chamber expands, it prevents water hammer and removes foreign substances adsorbed on the filter network of the water supply pump. It is effective to prevent burnout.

In addition, the present invention is configured so that the air collected in the discharge pipe and the air chamber is compressed by the discharge pressure of the feed water pump at the time of starting the feed water pump and is automatically replenished into the inside of the pressure tank for pump start for a long time pump stop Since the air layer inside the pressure tank for pump starting disappears and the start and stop of the tank water supply pump is frequently repeated, the water supply pump is prevented from being burned, thereby greatly improving durability.

In addition, the present invention, when the air in the discharge pipe and the air chamber is overcharged by the discharge pressure of the feed water pump at the start of the feed water pump to the outside of the tank through the overcharge air outlet quickly and automatically Since the pump operation is possible at the same level irrespective of the pressure control by being configured to be discharged, the reliability of the operation is greatly improved.

In addition, the present invention is configured to be separated into the water and air by the water separation pipe to the ground water flowing into the inside of the pump start pressure tank when the feed water pump is started to maximize the amount of air filling compared to the same tank water supply efficiency Not only can it be further increased, but also prevents the groundwater discharged from the pump starting pressure tank in the air mixed state, thereby further improving the water supply quality.

1 is an explanatory diagram showing a conventional water supply device for a sump tank.
2 is an explanatory diagram showing a water supply device for a sump tank according to the present invention;
3 is an explanatory diagram showing a configuration of a water collecting device for a water collection tank according to the present invention;
4 is an explanatory view showing the configuration of the overcharge air discharge port provided in the water collecting device for the water collection tank according to the present invention.
Figure 5 (a) (b) is an explanatory view showing the configuration of the water separation valve installed on the upper end of the water separation pipe provided in the water collecting device for the water collection tank according to the present invention.
Figure 6 is an explanatory view showing the configuration of the cap for separating water is installed on the lower end of the separator separation pipe provided in the water supply device for a sump according to the present invention.
7A to 7D are explanatory diagrams showing an operation process of a water collecting device for a water tank according to the present invention;
8A and 8B are explanatory diagrams showing an operation process of a water collecting device for a water collecting tank according to the present invention when the air layer in the pressure tank for starting the pump is extinguished;

Hereinafter, the present invention for achieving the above object will be described in detail with reference to FIGS. 2 to 8B.

Water collection device for the collection tank for ground water recycling of the present invention is a water supply pump 2, the first discharge pipe (3), the pump starting pressure tank (4), the second discharge pipe as shown in Figure 2 and (5), the air chamber 9, the connecting pipe (11).

The water supply pump 2 is installed in the collection tank 20 in which groundwater is stored, and a suction net is provided with a filtering net 2a for filtering foreign substances contained in the groundwater during water supply, and a water supply pump 2 is provided at the discharge end. The first discharge pipe (3) having a corrugated pipe (3a) for absorbing the vibration generated in the) is connected.

At this time, the first discharge pipe 3 connected to the discharge end of the feed water pump 2, the strainer (2b) that can filter the foreign matter of very small particles passing through the filter network (2a) of the feed water pump (2) It is desirable to install it.

As such, when the strainer 2b is installed at the discharge end of the feedwater pump 2, the fine foreign matter or sediment contained in the groundwater can be completely removed, such as a precipitation facility during construction of the water supply facility for groundwater recycling. Since there is no need to install related facilities, not only can the construction cost be greatly reduced, but also the maintenance of the water supply facility becomes easy.

The pump starting pressure tank 4 is installed outside the water collecting tank 20 in which groundwater is stored, and is provided with a pressure switch 4a for starting and stopping the water supply pump 2 according to pressure changes inside the tank. The lower one side is connected to the second discharge pipe (5) for supplying the ground water stored in the tank to the water supply pipe, the safety valve (6) and the sump (20) for preventing the tank damage due to the abnormal overpressure in the upper central portion Drain pipe (7) leading to the installation, one side is provided with a water level gauge (8) that can visually check the water level of the ground water stored in the tank.

In addition, an overcharged air outlet 15 for automatically discharging the overcharged air to the outside of the tank is installed on one side of the upper side of the pump starting pressure tank 4, the overcharged air outlet 15 is a pump An air discharge collecting tube 16 is vertically formed at one end inserted into the starting pressure tank 4 and an air discharge valve is formed at the other end protruding to the outside of the pump starting pressure tank 4. 17) is configured to be installed.

At this time, the air discharge collecting pipe 16 formed perpendicularly to one end of the overcharge air discharge port 15 inserted into the pump starting pressure tank 4 has a lower surface of the pump starting pressure tank. It is to be formed so as to match the minimum level of groundwater stored in (4).

In addition, it is preferable to install a filtering net 16a at the lower surface portion of the air discharge collecting tube 16 to prevent foreign matter from flowing into the overcharged air outlet 15.

As shown in FIG. 4, the air discharge valve 17 installed at the other end of the overcharge air discharge port 15 protruding to the outside of the pump starting pressure tank 4 has an interior of the overcharge air discharge port 15. When the groundwater flows into the valve as the float 17a rises due to buoyancy, the valve is closed, and when the groundwater filled in the overcharged air outlet 15 flows into the inside of the pump starting pressure tank 4 The valve is configured to open as the float 17a descends.

The air chamber 9 is installed on the upper end of the first discharge pipe 3, the lower portion is formed in an open cylindrical shape, the outer one side is provided with an air suction check valve (9a), the upper one side It is configured to insert the downward bent portion (11a) of the connection pipe (11).

At this time, the air suction check valve 9a installed at the lower side of the air chamber 9 is compressed by the air in the chamber by the discharge pressure of the feed water pump 2 when the feed water pump 2 is started. It closes when the pressure inside the chamber rises above atmospheric pressure and opens when the pressure inside the chamber drops below atmospheric pressure as air compressed in the chamber is discharged when the water supply pump 2 stops. Inhale.

The connection pipe 11 is connected between the air chamber 9 and the pump starting pressure tank 4 with a check valve 10 for preventing the backflow, and one end of the pressure tank 4 for pump starting. ) And the other end is inserted into the air chamber (9), and the other end inserted into the air chamber (9) is configured such that the downward bent portion (11a) is formed.

At this time, at one end of the connection pipe 11 inserted into the pump starting pressure tank 4, a radiating valve 13 is installed at an upper end, and a radiator having a radiating cap 14 installed at a lower end thereof. It is preferable to form the separation pipe 12 vertically.

As shown in (a) of FIG. 5, the valve opening and closing valve 13a is provided with a valve opening and closing plate 13a in the valve body 13b installed at the upper end of the separation pipe 12. When the air is only introduced into the starting initial water separation pipe 12 of the feed water pump 2, as shown in (a) of FIG. 5, the spring 13b is installed. Since the valve opening and closing plate 13a is lowered by the elastic force of the valve, the valve is opened, and as shown in (b) of FIG. Since the valve opening and closing plate 13a rises while compressing the spring 13b, the valve is closed.

Separation cap 14 is installed at the lower end of the separation pipe 12 is configured to be attached to the porous plate 14b on the upper surface of the hemispherical body 14a, as shown in Figure 6, the water supply pump ( When ground water in the air mixing state is introduced into the water separation pipe 12 through the first discharge pipe 3 and the connection pipe 11 at the start of 2), the ground water flowing into the lower part of the water separation pipe 12 is upward. It can be easily separated into water and air by the specific gravity difference by scattering.

In this way, a water separation valve 12 having a water separation valve 13 and a water separation cap 14 is formed at one end of the connection pipe 11 inserted into the pump starting pressure tank 4. In this case, the ground water flowing into the pump starting pressure tank 4 through the connection pipe 11 can be easily separated and stored as water and air, thereby maximizing the air filling amount compared to the same tank. Accordingly, the number of starts of the feedwater pump 2 can be reduced to further increase water supply efficiency, and the groundwater discharged from the pump starting pressure tank 4 through the second discharge pipe 5 is mixed with air. As the water can be prevented from being supplied to the water, stable water supply without cool-down is possible, thereby further improving water supply quality.

On the other hand, between the first discharge pipe (3) connected to the discharge end of the feed water pump (2) and the second discharge pipe (5) connected to the lower one side of the pump starting pressure tank (4) It is preferable to install the connecting pipe 18 provided with (19).

Thus, the solenoid valve for air charging between the first discharge pipe (3) connected to the discharge end of the feed water pump (2) and the second discharge pipe (5) connected to the lower one side of the pump starting pressure tank (4) When the connection pipe 18 provided with the 19 is installed, the air can be easily manually filled in the pump starting pressure tank 4 by using the solenoid valve 19 for air charging as necessary. Will be.

That is, when the solenoid valve 19 for air charging is opened as necessary, the groundwater stored in the pump starting pressure tank 4 flows out into the first discharge pipe 3 through the connection pipe 18. The pressure fluctuation of the pump starting pressure tank 4 is caused to start the feed water pump 2, whereby the first discharge pipe 3 and the connecting pipe 11 are downward by the discharge pressure of the feed water pump 2. Since the air inside the bent portion 11a flows into the pump starting pressure tank 4, it is possible to easily fill air into the pump starting pressure tank 4 manually.

Referring to the functional relationship of the water collecting tank water supply device for groundwater recycling of the present invention configured as described above are as follows.

As shown in FIG. 7A, the water supply device for a water tank for recycling groundwater of the present invention can be easily installed in a water tank 20 provided in an underground facility or a building such as a subway station, a tunnel, a power hole, a communication port, and the like. .

As such, the groundwater stored in the pump starting pressure tank 4 is used in a state in which a water collecting device 1 for groundwater recycling of the present invention is installed in a water collecting tank 20 provided in an underground facility or a building. When the internal water level of the pump starting pressure tank 4 is lowered and the pressure switch 4a reaches the pump starting pressure, the water supply pump 2 installed in the collection tank 20 is started and the water supply pump 2 The ground water sucked by the s starts to be discharged to the first discharge pipe 3, wherein some of the atmospheric pressure air inside the first discharge pipe 3 is trapped inside the air chamber 9 and pressurized. And the rest is pressurized while flowing into the downward bent portion (11a) of the connection pipe (11).

Subsequently, as the discharge pressure of the feed water pump 2 is gradually increased, the internal pressure of the air chamber 9 and the internal pressure of the downwardly bent portion 11a of the connecting pipe 11 are increased. When the internal pressure is increased, as shown in FIG. 7B, the air in the first discharge pipe 3 and the connection pipe 11 is pumped together with the ground water while the check valve 10 for preventing the backflow is opened. As it flows into the pressure tank 4, air is automatically replenished inside the pressure tank 4 for pump start.

Then, as the air inside the first discharge pipe 3 and the connection pipe 11 is introduced into the pump starting pressure tank 4, the air is overcharged inside the pump starting pressure tank 4 When the air pressure in the pump starting pressure tank 4 is increased as shown in FIG. 7B, the internal level of the pump starting pressure tank 4 is lower than the set minimum water level. The air discharge pipe 16 of the overcharge air discharge port 15 formed to match the lowest water level of the ground water stored in the pump starting pressure tank 4 is opened in the air discharge pipe 16. At the same time, the stored water is discharged downward by gravity and the overcharged air inside the pump starting pressure tank 4 is quickly collected into the air discharge collecting tube 16, and the air discharge collecting pipe ( 16) The air collected inside of When the water level of the pump starting pressure tank 4 rises, it is automatically discharged to the outside of the tank through the air discharge valve 17 of the overcharge air discharge port 15.

Subsequently, as the groundwater is supplied into the pump starting pressure tank 4, the internal water level of the pump starting pressure tank 4 is increased as shown in FIG. 7D, and the pressure switch 4a is applied to the pump stop pressure. When it reaches, the water supply pump 2 installed in the collection tank 20 stops. At this time, the air compressed in the air chamber 9 expands while supporting the check valve 10 for preventing the backflow. It is possible to easily remove foreign substances adsorbed to the filter net 2a of the feed water pump 2 while being discharged to the distal end of the first discharge pipe 3 while preventing the phenomenon.

In addition, even when the strainer (2b) is installed in the first discharge pipe (3) connected to the discharge end of the feed water pump (2) capable of filtering even the smallest particles foreign matter is compressed inside the air chamber (9) As the existing air is expanded and discharged to the distal end of the first discharge pipe 3, foreign matter adsorbed on the strainer 2b can be easily removed.

In addition, the water collection device for the collection tank 1 for groundwater recycling of the present invention, as shown in FIGS. 8A and 8B, the air filled in the inside of the pump starting pressure tank 4 when the pump is stopped for a certain time, The pressure switch 4a for controlling the start and stop of the feed water pump 2 is sensitively operated by dissolving the air layer in the tank and dissipating the air layer in the tank, so that the feed water pump 2 is started. The air collected in the air absorbs the discharge pressure of the feed water pump 2, so that the starting and stopping of the feed water pump 2 frequently does not occur repeatedly, thus preventing the water supply pump 2 from being burned out. It becomes possible.

In addition, the water collecting tank water supply device 1 for groundwater recycling according to the present invention is separated from the water separation valve 13 and the water separation at one end of the connection pipe 11 inserted into the pump starting pressure tank (4) When the separation cap 12 for the cap 14 is formed, the ground water flowing into the pump starting pressure tank 4 through the connection pipe 11 can be easily separated and stored with water and air. As it becomes possible to maximize the amount of air charge compared to the same tank to reduce the number of starts of the water supply pump (2) can not only increase the water supply efficiency more, but also the pressure tank (4) for starting the pump It is possible to prevent the groundwater discharged from the water supply pipe through the second discharge pipe (5) from being supplied in the air mixed state, so that stable water supply without cooling is possible, thereby further improving water supply quality.

As described above, the water collection device for the collection tank 1 for groundwater recycling according to the present invention has an air chamber installed at the upper end of the first discharge pipe 3 by the discharge pressure of the water supply pump 2 when the water supply pump 2 is started. When the air is compressed inside the (9) and the compressed air in the air chamber (9) is expanded when the water supply pump (2) is stopped, water hammer is prevented and adsorbed to the filtration network (2a) of the water supply pump (2). By being configured to remove the foreign matter, it is possible to effectively prevent damage to the water supply pump (2) due to water hammer and deterioration of water supply performance due to adsorption of foreign matter and burnout of the water supply pump (2).

In addition, the water collecting tank 1 for the groundwater recycling of the present invention is the interior of the first discharge pipe 3 and the air chamber 9 by the discharge pressure of the water supply pump 2 when the water supply pump 2 is started. The air collected in the air is compressed and at the same time configured to be automatically replenished into the inside of the pump starting pressure tank 4, so that the air layer inside the pump starting pressure tank 4 is extinguished when the pump is stopped for a predetermined time so that the water supply pump 2 Since the start and stop of the water is repeatedly repeated, the water supply pump 2 may be prevented from being burned out, thereby greatly improving durability.

In addition, according to the present invention, the water collecting device 1 for the collection of groundwater for recycling the groundwater is provided by the discharge pressure of the first discharge pipe 3 and the air chamber 9 by the discharge pressure of the water supply pump 2 when the water supply pump 2 is started. When the air inside is overcharged inside the pressure tank 4 for pump start, it is configured to be automatically discharged to the outside of the tank through the overcharged air outlet 15 so that the pump can be operated at the same level regardless of the pressure control. Therefore, the reliability of the operation can be greatly improved.

In addition, the water collection device for the collection tank 1 for ground water recycling of the present invention is ground water flowing into the interior of the pump starting pressure tank (4) at the start of the water supply pump (2) by the water separation pipe 12 Since it is configured to be separated by air, it is possible to maximize the air filling amount compared to the same tank, so that the water supply efficiency can be further increased, and the groundwater discharged from the pump starting pressure tank 4 is supplied with air mixed state. It can prevent the water supply quality can be further improved.

1: water supply device 2: water supply pump
2a: filter network 2b: strainer
3: first discharge pipe 3a: corrugated pipe
4: Pressure tank for pump start 4a: Pressure switch
5: 2nd discharge piping 6: Safety valve
7: drain pipe 8: water gauge
9: air chamber 9a: air suction check valve
10: check valve for preventing backflow 11: connection piping
11a: downward bend 12: radix separator
13: Separation valve 13a: Valve opening and closing plate
13b: spring 14: head separation cap
14a: hemispherical body 14b: perforated plate
15: overcharged air outlet 16: air collecting tube for air discharge
16a: filter network 17: air discharge valve
17a: float 18: connector
19: solenoid valve for air charging

Claims (3)

It is installed in the collecting tank 20 to store the ground water, the suction end is provided with a filter net (2a) and the discharge end is a water supply pump connected to the first discharge pipe (3) protruding out of the collection tank (20) ( 2) with,
It is installed outside of the sump 20, and is provided with a pressure switch (4a) for starting and stopping the water supply pump (2) in accordance with the pressure change in the tank, the lower one side supplying groundwater stored in the tank to the water supply pipe Pressure tank (4) for starting the pump is connected to the second discharge pipe (5) for
An air chamber 9 installed at an upper end of the first discharge pipe 3 and provided with an air suction check valve 9a at an outer side thereof;
It is connected between the pump starting pressure tank (4) and the air chamber (9) via a check valve (10) for preventing backflow, one end is inserted into the pump starting pressure tank (4) and the other An end portion is inserted into the air chamber 9 and the other end portion inserted into the air chamber 9 is connected to a pipe 11 having a downwardly bent portion 11a;
It is installed on one side of the upper portion of the pump starting pressure tank (4), the air discharge collecting pipe (16) is formed vertically at one end inserted into the pump starting pressure tank (4) and pump starting The other end protruding to the outside of the pressure tank (4) for the water collection tank water supply device for ground water recycling, characterized in that it comprises an overcharge air outlet 15 is provided with an air discharge valve (17). The gas separation pipe 12 is vertically formed at one end of the connection pipe 11 inserted into the pump starting pressure tank 4.
On the upper end of the water separation pipe 12 is installed valve 13 for separation of water,
Water collection device for a water tank for ground water recycling, characterized in that the lower portion of the water separation pipe 12 is provided with a separation head cap 14 configured to be attached to the porous plate (14b) on the top surface of the hemispherical body (14a). The method of claim 1 or 2, characterized in that between the first discharge pipe (3) and the second discharge pipe (5) is provided with a connecting pipe (18) provided with an solenoid valve for filling air (19). Water tank for the sump for the recycling of groundwater.

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