KR101958268B1 - Apparatus for preventing pollution of subterranean water - Google Patents

Abstract

The present invention relates to an apparatus to prevent a groundwater hole from polluting and, more specifically, to an apparatus to prevent a groundwater hole from polluting, which includes an air filter for preventing fine dust from going in a water intake pipe from the outside and performs backwash of the air filter by compressed air. To this end, according to the present invention, the apparatus to prevent a groundwater hole from polluting inserts a water intake pipe into the groundwater hole to discharge groundwater pumped in the water intake pipe by a pump from a side surface of the water intake pipe. The apparatus comprises: an air suction pipe to communicate with the water intake pipe on the upper portion of the water intake pipe exposed on the ground; an air filter installed at the end part of the air suction pipe to filter foreign substances from air flowing from the outside; a shutoff valve installed on an air suction pipeline in the lower portion of the air filter and connected to a float floating on water to open or close the air suction pipe in accordance with a water level; a compression valve installed in the water intake pipe; a valve to discharge the air compressed by the compression pump in a pulse type; a backwash pipe connecting the valve with the inside of the air filter to supply compressed air; and a backwash nozzle disposed on the end part of the backwash pipe installed in the air filter to eject the supplied compressed air in a direction from the inside of the air filter to the outside.

Description

[0001] Apparatus for preventing pollution of subterranean water [

The present invention relates to an apparatus for preventing contamination of an underground water hole, and more particularly, to an apparatus for preventing contamination of an underground water hole by providing an air filter for preventing fine dust from entering the inside of a water intake pipe from the outside, And to prevent pollution of the groundwater ball.

Generally, facilities for collecting groundwater for drinking water or for agriculture and industrial purposes are installed. In order to prevent contamination of foreign objects from foreign substances, pollution prevention devices should be provided.

A conventional apparatus for preventing contamination of an underground water ball is described in a registered patent No. 10-0890815 (Pollution Prevention Device for Underground Water Ball), which is registered by the applicant of the present invention. The structure is such that a water intake pipe is inserted into an underground water hole, And discharging the groundwater pumped by the pump to the side of the water intake pipe,

An induction pipe inserted into the water intake pipe and formed with a water inlet for introducing groundwater into the lower part for guiding the ground water pumped from the pump to the side of the water intake pipe and a drain port communicating with the water inlet;

A discharge port which is inserted into a side portion of the water intake pipe and an engagement jaw which is formed at a lower side of a discharge port located inside the water intake pipe and which is seated so that the discharge port of the induction pipe is caught by the jaw, ;

A rotating piece provided at a position opposite to the induction pipe connecting port and rotating up and down around the rotating shaft and a catching jaw formed on the lower side of the rotating piece so that when the induction pipe moves downward along the surface of the rotating piece, And a tightly supporting portion configured to closely contact the induction tube toward the induction tube connecting portion,

The upper portion of the water intake pipe is covered with a lid to prevent contamination of groundwater in the water intake pipe.

However, in this conventional technology, when the groundwater is pumped by the pump, the inside of the water intake pipe is in a vacuum state having a large sound pressure, so foreign substances such as fine dust are introduced into the interior through the fine space between the water intake pipe and the lid Thereby causing contamination of groundwater.

In addition, when the intake pipe and the lid are airtight and the outside air is not introduced at all, there is a problem that the inside of the intake pipe is kept in a vacuum state, .

<Prior Art Literature>

1. Registration No. 10-0890815

   (Groundwater ball pollution prevention device)

In order to solve the above problems, an air filter is applied to an upper portion of a water intake pipe to allow outside air to flow into the water intake pipe through the air filter when the water intake pipe is in a vacuum state, When the filter is clogged by foreign matter such as dust or leaves, it is backwashed by the air pressure, thereby providing a pollution prevention device of the ground water ball which allows the outside air to flow smoothly through the air filter into the intake pipe It has its purpose.

In order to achieve the above-mentioned object,

A pollution prevention device for an underground water ball, wherein a water intake pipe is inserted into an underground water hole to discharge groundwater pumped by a pump inside a water intake pipe to a side of a water intake pipe,

An air suction pipe connected to the intake pipe at an upper portion of the water intake pipe exposed above the ground;

An air filter installed at an end of the air suction pipe to filter out foreign matter from the outside;

A shutoff valve installed on an air suction pipe line at a lower portion of the air filter and connected to a floating ball on the water by a rotary bar to open or shut off the air suction pipe according to a water level;

A compression pump installed inside the water intake pipe;

A valve for discharging the compressed air from the compression pump in a pulse form;

A reverse osmosis pipe connecting the valve and the inside of the air filter to supply compressed air;

A backwashing nozzle located at an end of a retro-tubular tube located inside the air filter and injecting the supplied compressed air from the inside to the outside of the air filter;

A flow rate sensor installed on the pipeline of the air suction pipe for sensing a flow of air;

And a controller for driving the compression pump and the valve according to a flow rate value sensed by the flow rate sensor when the pump inside the intake pipe is operated.

According to the present invention, when the groundwater is pumped by the pump, external air can be introduced into the water intake pipe through the air filter by the negative pressure formed inside the water intake pipe, thereby preventing the groundwater from being contaminated .

Also, if the air filter is clogged by the foreign matter, the air filter is sensed and backwashed by the air pressure, so that the air can be smoothly introduced from the outside at all times.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a structure of an apparatus for preventing contamination of an underground water ball according to the present invention; FIG.
2 shows an air filter and a structure for backwashing it.
3 is a control block diagram for backwash control.

The above and other objects, features, and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings, which are not intended to limit the scope of the present invention.

In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments.

Also, in certain cases, there may be a term selected arbitrarily by the applicant, in which case the meaning thereof will be described in detail in the description of the corresponding invention.

Therefore, the term used in the present invention should be defined based on the meaning of the term, not on the name of a simple term, but on the entire contents of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

However, the following embodiments of the present invention may be modified into various other forms, and the scope of the present invention is not limited to the embodiments described below.

The embodiments of the present invention are provided to enable those skilled in the art to more fully understand the present invention.

FIG. 1 is a view showing the structure of an apparatus for preventing contamination of an underground water ball according to the present invention, FIG. 2 is a view showing a structure of an air filter and its backwashing, and FIG. 3 is a control block diagram for backwashing control.

As shown in FIG. 1, the present invention has a structure in which a water intake pipe 300 is inserted into a lower portion of a ground G on which a water intake hole is formed. This is disclosed in Korean Patent Application No. 10-1306120 (groundwater intake apparatus and its construction method ), And thus the detailed description of the structure will be omitted.

The induction pipe 340 is inserted into the intake pipe 300 and the groundwater pumped by the pump 341 installed at the lower end of the induction pipe 340 is discharged to the water pipe 330 connected to the side of the intake pipe 300, At this time, the upper side of the induction pipe 340 and the water outlet pipe 330 are connected by the induction pipe connection port 320.

The guide pipe connector 320 and its connection structure are the same as those of the registered patent application No. 10-0890815 (contamination prevention device for underground water) registered by the present applicant, and a detailed description thereof will be omitted.

In addition, a wire inlet 301 is provided at the side of the water intake pipe 300 to supply power to the pump 341. The upper end of the water intake pipe 300 is provided with a cover (310) is airtightly covered.

When the groundwater is pumped by the pump 341, a sound pressure that is as large as the water level of the groundwater is reduced is formed in the water intake pipe 300, and air is sucked into the water intake pipe 300 The pumping of the groundwater smoothly becomes possible.

When outside air flows into the intake pipe 300, air mainly flows through the airtight portion between the lid 310 and the intake pipe 300. At this time, Air may be introduced, and groundwater may be contaminated.

In order to prevent this, in the present invention, air can be introduced through the air filter 360, so that air can flow into the intake pipe 300 through the airtight portion between the lid 310 and the intake pipe 300 Do not let them enter.

The air filter 360 is installed through an air suction pipe 350. The air suction pipe 350 is an upwardly bent pipe in the form of an elbow and has a lower end connected to the water intake pipe 300 at an upper portion of the water intake pipe 300 And an air filter 360 is installed at an upper end portion of the air filter 360. [

The air filter 360 is installed along the side surface of the filter paper 361. The filter paper 361 is preferably made of a material capable of filtering fine dust as well as fine dust.

Accordingly, since the vacuum state is released by the air sucked from the air filter 360 when the water intake pipe 300 is in the vacuum state and the amount of air sucked from the air filter 360 is large, Air is not introduced through the airtight portion between the upper end of the intake pipe 300.

A shutoff valve 370 is formed in the air suction pipe 350. One end of the rotation bar 390 is connected to the shutoff valve 370 so as to be vertically rotatable, And an attachment portion 380 is provided.

The shutoff valve 370 opens or closes the air suction pipe 350 by the rotation of the rotating bar 390.

This structure is to prevent rainwater contaminated through the air filter 360 from flowing into the intake pipe 300 when the air filter 360 is locked by the rainwater during a rainy day, .

Therefore, when the rotary bar 390 is rotated downward by the inlet 380, the air suction pipe 350 is opened by the shutoff valve 370, so that external air is filtered through the air filter 360 And flows into the intake pipe 300.

However, when the upper part of the water intake pipe 300 exposed to the upper part of the ground G is flooded, the valve 380 is raised and the rotary bar 390 is rotated upward, so that the shutoff valve 370 is connected to the air suction pipe 350 So that the rainwater can be prevented from being introduced into the intake pipe 300 through the air filter 360.

On the other hand, when the air filter 360 is submerged and foreign substances such as dirt, dust, and leaves are adhered to the filter paper 361, air can not be sucked from the outside sufficiently. Therefore, A large negative pressure can be formed and a vacuum state can be obtained.

This prevents the pump 341 from satisfactorily cleansing the air filter 360. In this case, the clogging of the air filter 360 can not be easily confirmed by the administrator in the remote area such as the mountainous region, It is not easy to visit the intake pipe 300 every time to replace the air filter 360 even though it is confirmed.

Therefore, in the present invention, when the air filter 360 is clogged, the air is automatically backwashed by air pressure.

The compression pump 400 compresses clean air in the water intake pipe 300 and the compression pump 400 compresses the air in the water intake pipe 300. [ A valve 440 for discharging the compressed air in the form of a pulse is provided.

One end of the backwash pipe 410 is connected to the valve 440 and the other end of the backwash pipe 410 is connected to the inlet port of the air filter 360. [ Is inserted into the upper region.

2, the other side of the retrofit tube 410 extends to the inner central portion of the air filter 360, and a plurality of backwashes (not shown) And a nozzle 420 is mounted.

Preferably, the backwashing nozzle 420 is installed radially on the other end of the backwashing tube 410. When the air pressure is injected through the backwashing nozzle 420, Nozzle 420 is provided.

The air suction pipe 350 is further provided with a flow rate sensor 430 for sensing the flow rate of the air flowing into the intake pipe 300 through the air filter 360.

The operation of backwashing the air filter 360 with the above structure will be described.

First, the controller 450 installed in an external control panel controls the pump 341 to pump the groundwater through the induction pipe 340 and then discharge the water through the water pipe 330. At the same time, the flow rate sensor 430 And senses the flow of air through the air filter 360.

If the flow rate of the air from the flow sensor 430 in the state where the pump 341 is operated, that is, the flow rate value is less than a preset reference value, that is, the flow of air is small or not, the air filter 360 is blocked, And the compressed air is supplied to the retrofit tube 410 through the valve 440. In this case,

At this time, the valve 440 supplies the compressed air from the compression pump 400 to the retrofit tube 410 in the form of a pulse so that a large air pressure can be supplied instantaneously.

This pulsed air pressure is supplied to the backwash nozzle 420 continuously (e.g., once every 2 to 3 seconds) to apply impact to the filter paper 361 by the air pressure to produce mud, dust, And so on.

At the same time, the controller 450 determines that the air filter 360 has been sufficiently cleaned when the flow rate value of the air flow rate is greater than the reference value by receiving the flow rate value of the air from the flow rate sensor 430, The operation of the valve 440 is stopped.

Thus, even if the administrator does not check the state of the air filter 360, the air filter 360 is automatically cleaned, and the ground water can be positively charged.

In addition, the air filter 360 is not backwashed by the outside air, but the air filter 360 is backwashed by the clean air inside the water intake pipe 300, so that the groundwater is not contaminated.

Since the controller 450 can detect whether the shutoff valve 370 is open or closed by a signal output from the open / close detection sensor, the shutoff valve 370 is provided with a separate shutoff sensor (not shown) When the air intake pipe 350 is blocked by the valve 370, the pump 341 is not operated because the water is flooded by the rainwater, thereby stopping the positive water in the groundwater.

Accordingly, when the supply suction pipe 350 is blocked by the shutoff valve 370, the controller 450 does not drive the compression pump 400 even if the flow of air from the flow rate sensor 430 does not occur, .

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, Invention.

300: Water intake pipe
301: Wire inlet
310: cover
320: Induction pipe connector
330: Water pipe
340: Induction tube
341: Pump
350: air suction pipe
360: Air filter
370: Shutoff valve
380: Rotary bar
390:
400: Compressed pump
410: Station Customs
420: Backwash nozzle
430: Flow sensor
440: Valve
450: controller

Claims (3)

A pollution prevention device for an underground water ball, wherein a water intake pipe is inserted into an underground water hole to discharge groundwater pumped by a pump inside the water intake pipe to the side of the intake pipe,
An air suction pipe connected to the intake pipe at an upper portion of the water intake pipe exposed above the ground;
An air filter installed at an end of the air suction pipe to filter out foreign matter of air introduced from the outside and to introduce it into a water intake pipe;
A shut-off valve installed on the air suction pipe line at a lower portion of the air filter, connected to a floating port on the water by a rotary bar to open or shut off the air suction pipe according to a water level;
A compression pump installed inside the water intake pipe to compress air inside the water intake pipe;
A valve for discharging the compressed air from the compression pump in the form of a pulse;
A reverse osmosis pipe connecting the valve and the inside of the air filter to supply compressed air;
A backwashing nozzle located at an end of a retro-tubular tube located inside the air filter and injecting the supplied compressed air from the inside to the outside of the air filter;
A flow rate sensor installed on the pipeline of the air suction pipe for sensing a flow of air;
A controller for driving the compression pump and the valve when the flow rate value detected by the flow rate sensor is equal to or less than a set reference value when the pump in the intake pipe is operated and stopping the operation of the compression pump and the valve when the flow rate value is equal to or greater than the reference value &Lt; / RTI &gt;
Wherein the shut-off valve is provided with an opening / closing detection sensor, and the controller checks whether the shut-off valve is opened or closed by a signal output from the opening / closing detection sensor to control the operation of the pump and the compression pump. Prevention device.
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