KR101421139B1 - Filter cleaning device of water treatment facility - Google Patents

Abstract

The present invention relates to a filter cleaning apparatus for water treatment facility. According to an embodiment of the present invention, a filter cleaning apparatus for water treatment facility includes: a supporting holder which is fixed to an upper part of a cylindrical filter module, receives cleaning water supplied from the outside to the interior of the supporting holder, and passes the cleaning water; a water supply hub which is supported to a lower part of the supporting holder to be axially rotated, and receives the cleaning water passing through the supporting holder to the interior of the water supply hub; each of hollow cleaning water ejecting pipes which has a rear end fixed to the water supply hub and extends to the outer periphery of each filter unit; and each of nozzles which is arranged on the cleaning water ejecting pipe, ejects, towards the filter module, water pressed in from the water supply hub to the cleaning water ejecting pipe, but which is arranged to the rear of a target rotating direction to be rotated around the filter module by rotating the water supply hub and the cleaning water ejecting pipe with reaction force against ejecting pressure of the ejected cleaning water. Therefore, the nozzles can be rotated around the filter module to cause cleaning water to reach the whole filter module, thereby improving cleaning efficiency of the filter module. As a result, the filter module can be constantly kept in superb condition, thereby improving the performance of removing pollutants from contaminated water and being economically operated.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a filter cleaning apparatus for a water treatment facility,

The present invention relates to a filter cleaning apparatus for a water treatment facility.

The various pollutants that occur around us can be divided into point pollutants and nonpoint pollutants. The point pollutants are contaminants discharged from so-called spot pollution sources, such as domestic sewage or industrial wastewater generated at ordinary households or factories. Non-point pollutants are contaminants that occur in a wide range of areas, such as agricultural land, pasture, forests, roads, etc.

The non-point pollutants include, for example, fertilizers, agricultural chemicals, housing spills, dust and heavy metals, pathogenic microorganisms, organic compounds, and radioactive materials sprayed on agricultural land. They stay in dust and garbage, ) And flows into surrounding rivers and groundwater. Therefore, it is very important to prevent early storms from flowing directly into streams or groundwater.

Accordingly, various kinds of non-point pollution abatement facilities are applied to a new city, a residential area, or a highly polluted area, which are recently constructed, in order to prevent environmental pollution caused by the above non-point pollutants. The non-point pollution abatement facility is one of the water treatment facilities, and it passes the initial and combined sewage water (CSOs) mixed with non-point pollutants into it, and seeks out pollutants in the rainwater to be purified to some extent .

On the other hand, in order to maintain the best performance of the water treatment facility for treating early stormwater and combined sewage water (CSOs), various pollutants filtered by built-in screen filters and filter media, such as trapped sludge, So that the filter or filter material functions as originally designed.

In Patent Document 1 (Patent Document 1) proposed as a method for cleaning filters and filter media in a water treatment facility, a plurality of nozzles are fixedly arranged on the inner and outer side of a curtain filtration filter portion to spray the washing water to the curtain filtration filter portion, And a filter cleaning device for cleaning the filter portion.

The nozzle injects washing water while being fixed along the longitudinal direction of the piping line disposed on the inside and outside of the curtain filtering filter unit. The washing water sprayed from each of the nozzles strikes the curtain filtering filter unit to remove or remove contaminants from the curtain filtering filter unit.

However, the conventional water treatment facility equipped with the above-described filter cleaning device is disadvantageous in that the cleaning efficiency of the filter is not as high as thought and the overall water treatment ability is poor. This is because the effective spray range of the washing water sprayed from the nozzle of the filter washing apparatus is limited. Effective injection range refers to the range of arrival of a spillway filter (with kinetic energy sufficient to remove contaminants). That is, the range of the washing water which hits the filter and the washing water having the kinetic energy capable of removing contaminants from the filter hits the filter.

This problem can be solved by filling the nozzle as densely as possible in front of the surface to be cleaned of the filter, or by increasing the ejection pressure of the nozzle to a great extent and widening the injection angle of the washing water to the maximum.

However, as the number of nozzles applied to the periphery of the filter increases, the cleaning ability of the filter itself may improve, but the manufacturing cost of the water treatment apparatus increases and the filter becomes complicated and the maintenance becomes uncomfortable. Also, during the water treatment process, the nozzle and the water supply pipe may interfere with the flow of the contaminated water.

In particular, since the total ejection pressure and ejection amount of the washing water increase, more washing water and a high-pressure pump must be operated. It is practically difficult to cause each nozzle to output a meaningful ejection pressure even if a high-pressure pump is used.

KR 10-0823240 B1

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide a cleaning device for a washing machine, which is equipped with a cleaning nozzle for circulating a cleaning water around a filter, And a filter cleaning device for a water treatment facility which can maintain the filter at the best condition at all times, and is excellent in the ability to remove contaminants from contaminated water and can be operated economically.

In order to solve the above problems,

The filter cleaning device for a water treatment facility according to an embodiment of the present invention takes the form of a cylinder and is installed on an upper part of a filter module part for removing pollutants by passing polluted water flowing into the inside thereof in a radial direction, The washing water is sprayed to the filter module part to back up the filter module part,

A tubular support fixed to a central upper portion of the filter module and fixed to the lower end of the wash water supply pipe through a fixing nut so as to receive wash water supplied from the wash water supply pipe and pass the wash water downward through the communication path, holder;

A cup-shaped water supply hub rotatably supported at a lower portion of the cylindrical support holder and having a lower end closed to receive the wash water passed through the cylindrical support holder;

A hollow washing water outlet pipe having a rear end fixed to the cup-shaped water supply hub and extending toward an outer peripheral side of the filter module;

The water supply device according to any one of claims 1 to 3, wherein the water supply hub is provided with a hollow water supply outlet, A nozzle installed behind the target rotation direction so as to rotate the cleaning water outlet and turn the periphery of the filter module part; And

Sliding means formed of a cylindrical protruding portion formed at a lower end of the cylindrical support holder and having a ring-shaped engagement portion extending in the circumferential direction of the cylindrical support holder and a support groove provided in the water supply hub to rotatably receive the engagement portion;

.

Further, in the filter cleaning apparatus for a water treatment facility according to an embodiment of the present invention, the hollow washing water outlet pipe is connected to a cup-shaped water supply hub and extends horizontally, And

A vertical extension extending in a vertical direction in communication with the horizontal extension and spaced parallel to an outer circumferential surface of the filter module;

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These solutions will become more apparent from the following detailed description of the invention based on the attached drawings.

Prior to this, terms and words used in the present specification and claims should not be construed in a conventional and dictionary sense, and the inventor should appropriately define the concept of the term in order to describe its invention in the best way possible It should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention.

According to the present invention, the washing water circulates around the periphery of the filter module part and the washing water can reach the corner of the filter module part, so that the cleaning efficiency of the filter is excellent, so that the filter module part always maintains the best condition, The removal ability of the material is excellent and it can be operated economically.

1 is a partially cutaway perspective view illustrating an internal structure of a water treatment facility according to an embodiment of the present invention.
2 is a partially cutaway perspective view showing another modification of the water treatment facility according to the embodiment of the present invention.
3 is a side view of the first and second processing units shown in Fig.
4 is a block diagram illustrating an internal structure of a main processing space in a water treatment facility according to an embodiment of the present invention.
5 is a perspective view of a filter cleaning apparatus for a water treatment facility according to an embodiment of the present invention.
6 is a plan view for explaining the operation of the filter cleaning apparatus shown in FIG.
7 is a partial cross-sectional view showing a main part of the filter cleaning apparatus shown in FIG.

The specificity and features of the present invention will become more apparent from the following detailed description and examples, which are to be taken in conjunction with the accompanying drawings. It should be noted that, in the present specification, the reference numerals are added to the constituent elements of the drawings, and the same constituent elements have the same numerical numbers as much as possible even if they are displayed on different drawings. Also, terms such as " first ","second"," one side ","other side ", etc. are used to distinguish one element from another element, . DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the accompanying drawings.

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

The water treatment facility according to the present embodiment is installed in a non-point polluted area and effectively removes non-point pollutants contained in rainwater during an initial pollution, and the scale thereof can be changed as needed. In addition, since it is cleaned by stormwater flowing through the surface of the earth, it is buried in the ground lower than the earth's surface so that it can receive excellent quality.

As shown in FIG. 1, the water treatment facility 11 according to the present embodiment includes a concrete structure 13 that takes the form of a box and provides an internal space, and a concrete structure 13 disposed at one side of the inside of the structure 13, A pretreatment unit installed in the main treatment space 67 isolated from the pretreatment unit through the first partition wall 27 and adapted to pass the pretreatment A filter module unit 39 for receiving the polluted water passing through the filter module unit 39 in a radial direction after the polluted water is received in the lower part of the filter module unit 39, And a filter cleaning unit 51 for cleaning the filter module unit 39 when the filter module unit 39 is not operated.

The structure 13 includes a bottom portion 13b installed at the bottom of the excavation space and providing a horizontal support surface, a wall portion 13a fixed to the rim of the bottom portion 13b and forming a vertical wall, And a ceiling portion (not shown) installed on the upper portion of the wall portion 13a. An excavated soil can be covered on the top of the ceiling.

As shown in the figure, pits 13c and 13d are provided on both sides of the bottom portion 13b. Pumps 15a and 15b are provided in the respective pits 13c and 13d. The pumps 15a and 15b will be described later.

The water inlet pipe 17 which is fixed to the inside of the structure 13 through the one side wall 13a of the structure 13 is a conduit for guiding the outside contaminated water into the structure 13. [ The contaminated water encompasses all contaminated water such as initial storm water containing non-point pollutants, sewage or sewage, and the like.

The pre-processing unit includes a primary processing unit 21 and a secondary processing unit 29 isolated by the first and second barrier ribs 25 and 27. The pretreatment unit serves to first filter out contaminants having a size greater than any of the contaminants mixed in the contaminated water.

To this end, a knock screen 23 is provided in the primary processing unit 21. The coarse screen 23 is a hollow basket-like member made of a screen net, and functions to filter various kinds of contaminants that flow along with the contaminated water through the water inlet pipe 17. The impurities include, for example, cigarette butts floating in water, leaves or other general waste.

The inner space in which the coarse screen 23 is installed is opened by a lower pit 13c as a vertical passage and the coarse screen 23 is spaced from the inner wall surface of the primary processing unit 21. [ Therefore, even if the coarse screen 23 is not smoothly discharged due to contaminants because the coarse screen 23 can not be filled, the contaminated water can be separated from the outside of the coarse screen 23 and the inner wall surface, There is no fear that backflow will occur.

The water having passed through the screen screen 23 passes through the lower part of the second partition 25 and then flows into the secondary processing part 29. The secondary processing section 29 has three screens 31 as a portion for leading the contaminated water passed through the coarse screen 23 to the upper portion and for filtering out smaller pollutants in the polluted water. The screen 31 is a plate-like member having a plurality of through holes (31a in Fig. 3) formed therein, and three of the plate members are arranged up and down.

The screen 31 is made by pressing a stainless steel plate, for example, and has wrinkles formed by parallel folding lines. A plurality of through holes 31a are formed in each bent portion formed by the corrugations. The sizes of the through holes 31a are different on all three screens 31. [

The size of the through hole 31a of the screen 31 disposed at the lowermost position is the largest and the size of the through hole 31a of the screen 31 installed on the uppermost layer is the smallest. The reason why the screen 31 is wrinkled as described above is to minimize the clogging of the through hole 31a by forming the unevenness by the wrinkles.

The diameter of each of the through holes 31a and the number of the through holes or the number of the screens 31 installed on the screen 31 may vary depending on the case. The screen 31 may be formed of synthetic resin.

The pumps 15a and 15b provided in the pit 13c under the first and second processing units 21 and 29 are arranged in such a manner that the pump 15a or 15b which is trapped in the first and second processing units 21 and 29 The water is discharged to the outside of the structure 13 through the waste water discharge pipe 16b or the inside of the first and second treatment units 21 and 29 is cleaned and the cleaning water accumulated in the pit 13c is discharged do.

In any case, the contaminated water processed in the secondary processing unit 29 passes through the induction pipe 33 through the weir formed in the first partition 27 to the main processing space 67. The induction pipe 33 is a vertical conduit that receives the contaminated water that has passed through the weir 27a into the inside thereof, guides it to the vertical lower part, and then transfers it to the inflow pipe 35.

The main processing space 67 is a water tank in which the treated water that has been subjected to the purification treatment once passes through the filter module unit 39 to be described later. The treated water collected in the main processing space 67 is discharged to the outside through the drainage weir 53 and the drainage pipe 19.

The drain weir 53 is a member for passing the treated water in the main treatment space 67 and guiding the treated water to the drain pipe 19, and is fixed to the four wall surfaces of the main treatment space 67. The height of the drain weir 53 with respect to the bottom portion 13b is lower than the height of the upper end portion of the second fine mesh filter 45 to be described later.

That is, the imaginary horizontal line extending horizontally from the upper end of the second fine mesh filter 45 is higher than the height of the upper end of the drain weir 53 by H. This is because the water that has passed through the filter module section 39 can be smoothly passed over to the drain weir 53 and drained. The height H depends on the size of the water treatment facility and the required water treatment ability.

The main processing space 67 is provided with an inflow pipe 35 which horizontally guides the contaminated water transferred through the induction pipe 33 and whose upper end portion is bent upward, A support plate 49 fixed to the upper end of the induction diffuser 37, a filter module 39 supported by the support plate 49, a filter module 39, And a filter cleaning device 51 for backing up the filter module part 39 is installed.

The induction diffuser 37 is a funnel-shaped member whose lower end is fixed to the inflow pipe 35. The guiding diffuser 37 is guiding means for guiding the contaminated water passing through the inflow pipe 35 to the filter module unit 39. Particularly, since the diameter of the induction diffuser 37 increases toward the upper part, the flow rate becomes smaller as the contamination water flowing through the induction diffuser 37 increases, so that it has a calm flow pattern and is prepared for filtering by the filter module unit 39 do.

The support plate 49 fixed to the upper end of the induction diffuser 37 is a support member for horizontally supporting and supporting the filter module unit 39 and blocks the lower part of the filter module unit 39, So that the contaminated water passing in the radial direction does not fall down.

The inner region between the upper portion of the induction diffuser 37 and the support plate 49 and the interior of the second fine mesh filter 45 and the outer region other than the inner region are the contaminated zone and the fresh water zone. The contaminated area is a space in which contaminated water and pollutant are received before the removal of the pollutant, and an outer area is a space filled with treated fresh water.

A drain valve (57 in Fig. 4) is provided in the support plate 49, and two drain holes (49a in Fig. 4) are formed. The drain hole 49a is opened and closed by an opening / closing means described later, and is opened when the filter module portion 39 is backwashed. The valve 57 and the drain hole 49a will be described later with reference to FIG.

On the other hand, the filter module unit 39 is fixed on the upper surface of the support plate 49. The filter module unit 39 passes the polluted water flowing upward through the induction diffuser 37 in the radial direction thereof and performs purification treatment. The filter module unit 39 includes a curtain filtering filter unit 41 having a predetermined thickness and taking the form of a cylinder, a cylindrical screen filter 47 provided in the inner side of the curtain filtering filter unit 41 and serving as a frame, A first fine mesh filter 43 disposed on the outer side of the curtain filtering filter unit 41 and a second fine mesh filter 45 disposed on the outer side of the first fine mesh filter 43 .

The screen filter 47, the curtain filtering filter unit 41, and the first and second fine mesh filters 43 and 45 have different diameters but all have the same center. For example, it has a pattern of concentric circles when viewed from the top. The height of the first fine mesh filter 43 is smaller than that of the curtain filtering filter unit 41 and the height of the second fine mesh filter 45 is smaller than that of the first fine mesh filter 43.

The curtain filtration filter 41, the first fine mesh filter 43 and the second fine mesh filter 45 are formed so as to be stepped in height, as compared with the clogging of each filter. That is, when each of the filters 41, 43, and 45 is clogged due to an abnormality, the water exceeding the curtain filtering filter 41 passes through the first fine mesh filter 43 and is discharged through the second fine mesh filter 45 .

The curtain filtration filter unit 41 has a fibrous filter medium therein. The fibrous filter material is a filter material made of fibers, which filters contaminants in the polluted water. Particularly, the fibrous filter material is arranged in multiple layers so that the low density fibrous filter media, the medium density fibrous filter media and the high density fibrous filter media are spaced apart from each other in the inner side to the outer side. As the overall thickness of the curtain filtration filter portion 41 is thicker, the filtration efficiency is improved.

The first fine mesh filter 43 is a filter member having a smaller clearance than the curtain filtering filter unit 41. The first fine mesh filter 43 filters contaminants passing through the curtain filtering filter unit 41 and allows water to pass through.

The contaminants passing through the first fine mesh filter 43 are caught by the second fine mesh filter 45 and removed. The second fine mesh filter 45 naturally has a structure that is narrower than that of the first fine mesh filter 43 and finally filters the contaminants. The water that has passed through the second fine mesh filter 45 is treated water in which contaminants are treated to be less than the allowable value and fills the main processing space 67 outside the filter module unit 39 and the drain weir 53 And then discharged through the drain pipe 19.

The treated water in the main treatment space 67 can no longer exceed the drainage weir 53 and the main treatment space 67 can no longer pass through the drainage weir 53. As a result, .

At this time, the pump (15b in Fig. 4) provided in the pit 13d is operated to discharge the fresh water in the main processing space 67 to the outside of the structure 13 through the fresh water discharge pipe 16a. The drainage by the pump 15b can be continued until the bottom portion 13b is completely exposed.

On the other hand, a filter cleaning unit 51 for backing up the filter module unit 39 is installed on the filter module unit 39. Basically, the filter cleaning apparatus 51 is activated when the main processing space 67 is empty. For example, when the precipitation ends or when the precipitation ends, the filter module unit 39 is cleaned.

Particularly, the filter cleaning device 51 rotates the filter module unit 39 while rotating with the reaction force corresponding to the ejection pressure of the washing water sprayed through the nozzles 51d and 51e, The washing water is sprayed over the washing water.

5 to 7, the filter cleaning apparatus 51 applied to the water treatment facility 11 according to the present embodiment is fixed to the upper center of the filter module unit 39 and includes a washing water supply pipe 51a, A water supply hub 51f which is rotatably installed at the lower end of the support holder 51m and a water supply hub 51f whose rear end is fixed to the water supply hub 51f and which extends in the longitudinal direction, And a plurality of nozzles 51e and 51d provided at the washing water outlet pipe 51n. The washing water outlet pipe 51n has an extension end extending to the inside of the filter module unit 39.

The support holder 51m is fixed by a separate support frame (not shown) and receives the water supplied through the wash water supply pipe 51a to pass downward through the communication path 51p. In addition, the water supply hub 51f And is fixed to the lower end of the washing water supply pipe 51a through a fixing nut 51k.

The water supply hub 51f is a cup-like member whose lower end is closed, and guides the water having passed through the support holder 51m to the washing water outlet pipe 51n. In particular, the water supply hub 51f is rotatably supported by the support holder 51m by an external force. The external force is a force due to the reaction force depending on the ejection pressure of the nozzle to be described later. It is needless to say that additional sliding means may be added between the support holder 51m and the water supply hub 51f as necessary.

A plurality of ring-shaped locking portions 51t are formed on the outer peripheral surface of the lower end of the support holder 51m and a support groove 51v for receiving the locking portion 51t is formed on the inner peripheral surface of the water supply hub 51f Lt; / RTI >

The latching portion 51t is a protrusion having an E-shaped cross section and rotates while inserted into the support groove 51v. It is a matter of course that any sliding means such as a bearing can be installed in the support groove 51v as necessary.

The washing water outlet pipe 51n includes a horizontal extending portion 51b having a rear end communicating with the water supply hub 51f and extending horizontally and a plurality of vertical extending portions 51b communicating with the horizontal extending portion 51b, A vertical extension portion 51c and a plurality of nozzles 51e and 51d disposed in the horizontal extension portion 51b and the vertical extension portion 51c.

The horizontal extension portion 51b is a hollow pipe whose rear end is fixed to the water supply hub 51f, and two of the horizontal extension portions 51b extend in opposite directions. One horizontal extending portion 51b of the two horizontal extending portions 51b is longer than the opposite horizontal extending portion 51b. The horizontal extended portion 51b is for backwashing the second fine mesh filter 45 and the short horizontal extending portion 51b is for filtering the curtain filtering filter portion 41 and the first fine mesh filter 43 ). ≪ / RTI >

The vertical extension part 51c is a hollow pipe connected to the horizontally extending part 51b through a connection part T or an elbow which is often used for the water pipe and extends to the support plate 49 side as shown in FIG. do.

The weight of the one horizontal extending portion 51b and the one vertical extending portion 51c and the other horizontal extending portion 51b and the vertical extending portion 51c are the same with respect to the water supply hub 51f, The portion 51b does not tilt to one side. The water supply hub 51f is the center of gravity. The nozzles 51e and 51d are composed of an upper nozzle 51e provided in the horizontal extension 51b and a plurality of side nozzles 51d provided in the vertical extension 51c.

The upper nozzle 51e rotates the upper portion of the curtain filtering filter portion 41 in accordance with the rotation motion of the washing water outlet pipe 51n to spray wash water on the upper surface of the curtain filtering filter portion 41, It causes the contaminants attached to the surface of the filter media to sweep down.

In addition, the side nozzles 51d are disposed at the respective vertical extension portions 51c and eject wash water laterally. The number of application of the side nozzles 51d with respect to the vertical extension 51c may vary as the case may be.

On the other hand, as described above, the filter cleaning apparatus 51 in this embodiment rotates by the reaction force corresponding to the ejection pressure of the washing water ejected from the upper nozzle 51e and the side nozzle 51d. The ejection direction of the nozzles 51e and 51d is specifically adjusted.

That is, the washing water spraying direction of the nozzle is deflected rearward in the rotating direction of the washing water discharge pipe 51n so that the filter washing apparatus 51 can rotate in the direction of arrow s in Fig. 6, for example.

6, the nozzles 51e and 51d provided in the washing water outlet pipe 51n are designed to spray the washing water in the arrow f direction. As described above, the washing water sprayed in the direction of the arrow f causes a reaction force corresponding to the minute power to rotate the washing water discharge pipe 51n in the direction of arrow s. At this time, it is natural that the washing water sprayed from the nozzles 51e and 51d hits the filter module 39.

The upper nozzle 51e rotates in the circumferential direction of the curtain filtering filter unit 41 at the upper portion of the curtain filtering filter unit 41 and injects the washing water downward as the washing water outlet pipe 51n rotates as described above. The washing water reaches all portions of the upper end of the curtain filtering filter portion 41, and the washing efficiency can be improved accordingly.

Likewise, the side nozzles 51d spray cleaning water to the periphery of the curtain filtration filter unit 41 and the first and second fine mesh filters 43 and 45 to remove contaminants. The plurality of side nozzles 51d revolve in the circumferential direction around the curtain filtration filter portion 41 and the first and second fine mesh filters 43 and 45 to eject the washing water. And the first and second fine mesh filters 43 and 45 collide with the washing water to be cleaned. It is possible to perform the cleaning by colliding all the portions of the filter with the washing water of the same pressure using the few nozzles 51e and 51d.

On the other hand, the contaminants separated from the filter module part 39 by the filter cleaning device 51 are discharged downward through the drain hole (49a in FIG. 4). This will be described with reference to FIG.

FIG. 2 is a partially cutaway perspective view showing another modified example of the water treatment facility according to an embodiment of the present invention, and FIG. 3 is a side view of the first and second processing units shown in FIG. The same reference numerals as those of the above-mentioned reference numerals indicate the same members having the same function.

As shown in the figure, no pit is provided in the pretreatment section of the water treatment facility 11 shown in Fig. That is, the bottom of the preprocessing portion has the same height as the bottom portion 13b of the main processing space 67. [

The water hole 25a is formed in the lower end of the partition 25. [ The water passage hole 25a is a passage for communicating the primary processing unit 21 and the secondary processing unit 29 and guides the contaminated water that has passed through the coarse screen 23 to the secondary processing unit 29.

A drain valve 55 is provided on the lower side of the partition 27 partitioning the main processing space 67. The drain valve 55 is an automatic valve that can be remotely controlled and communicates the internal space of the first and second processing units 21 and 29 with the main processing space 67.

The drain valve 55 is configured to discharge the contaminated water remaining in the first and second processing units 21 and 29 to the opposite pit 13d via the main processing space 67 . The contaminated water flowing into the opposite pit (13d) is discharged to the outside of the structure (13) by the pump (15b).

4 is a block diagram showing an internal structure of a main processing space 67 in a water treatment facility according to an embodiment of the present invention. Referring to the drawing, it can be seen that the treatment water w is filled in the main treatment space 67. The treated water w passes through the filter module part 39 in the radial direction and is water in a state where contaminants are removed.

The treated water that has passed through the filter module unit 39 passes through the drainage weir 53 while the polluted water flows in the direction of arrow e through the inlet pipe 35 and continues to flow through the filter module unit 39 And discharged to the drain pipe 19.

On one side of the support plate 49, two drain holes 49a are formed. The drain hole 49a is an opening that penetrates the support plate 49 in the thickness direction and is opened and closed by a stopper 59. [

When the water in the main processing space 67 is accommodated in the main processing space 67, the stopper 59 rises by buoyancy against water to close the drain hole 49a, Closing means for opening the opening 49a.

The opening and closing means includes a cap 59 provided at a vertically lower portion of each drain hole 49a, a connecting rod 61 fixed to a lower portion of the cap 59 and extending vertically downward, And a supporting frame 65 fixed to the bottom portion 13b and guiding the elevating movement of the connecting block 61. [

The lifting cylinder (63) is an airtight cylinder in which air is accommodated. The lifting cylinder (63) is raised by buoyancy and presses the stopper (59) upward. The cut-off pressure of the stopper 59 with respect to the drain hole 49a is due to the buoyant force of the flushing bucket 63. Reference numeral 49b denotes a seal for preventing water from leaking.

The connecting rod 61 has a constant cross-sectional shape and extends vertically and moves up and down with the lower end fixed to the float cylinder 63. The length of the connecting rod 61 is such that the stopper 59 can be separated from the drain hole 49a in a state where the lifting barrel 63 descends and is placed on the bottom portion 13b.

The support frame 65 guides the elevating movement of the connecting block 61 while being fixed to the bottom portion 13b. The shape of the support frame 65 can be changed in various ways as long as such functions can be performed.

The stopper 59 blocks the drain hole 49a when the treatment water in the main treatment space 67 is at a certain level or higher (by the action of the lifting barrel 63) As the water level of the treated water w gradually decreases, the drain hole 49a is lowered to open the drain hole 49a. The degree to which the plug 59 is separated from the drain hole 49a at a certain level depends on the design of the opening and closing means.

In any case, as shown in Fig. 4, while the treated water w continuously passing through the filter module portion 39 is discharged to the drain pipe 19 over the drain weir 53, The drain hole 49a is closed so that the contaminated water in the filter module 39 is prevented from mixing with the treated water.

When the ratio finally stops and no further contaminated water flows in, the pump 15b is operated to discharge treated water having a lower level than the drain weir 53 to the outside. As the pump 15b operates, the level of the treated water gradually decreases, and at the moment when the level of the treated water reaches a certain level, the lifting cylinder 63 starts to descend. It goes without saying that the drain hole 49a is opened as the lifting barrel 63 descends.

When the bottom portion 13b is finally exposed, the float 63 is placed on the bottom portion 13b without further buoyancy. The stopper 59 has descended as much as possible.

As described above, when the drain hole 49a is opened, the drain valves 57 and 58 are also opened, the pump 15b is stopped, and then the filter cleaning unit 51 is operated to clean the filter module unit 39. At this time, the contaminants separated from the filter module part 39 flow into the pit 13d through the drain hole 49a.

If the backwashing of the filter module part 39 is sufficiently performed, the pump 15b is operated again to completely discharge the concentrated polluted water collected in the pit 13d through the sewage discharge pipe 16b. Through this process, the main processing space 67 is completely empty.

In order to prepare for the next watering at the time of the next rainfall, the drain valve 57 should be shut off and the drain hole 49a should be closed. To this end, a constant water is supplied to the main processing space 67, (13b). The lifting cylinder 63 is lifted by the buoyancy caused by the constant, so that the stopper 59 blocks the drain hole 49a.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but many modifications and variations are possible in light of the above teachings. It will be apparent that modifications and improvements can be made by those skilled in the art.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

11 - Water treatment facility 13 - Structure
13a - wall portion 13b - bottom portion
13c, 13d - pit 15a, 15b - pump
16a - fresh water discharge pipe 16b - sewage discharge pipe
17 - Water supply pipe 19 - Water pipe
21 - Primary processing unit 23 - Coarse screen
25 - second partition 25a - through hole
27 - First partition 27a - Weir
29 - secondary processing unit 31 - screen
31a - Through hole 33 - Induction tube
35 - inlet pipe 37 - induction diffuser
39 - Filter module part 41 - Curtain filtration filter part
43 - First fine mesh filter 45 - Second fine mesh filler
47 - Screen filter 49 - Support plate
49a - drain hole 49b - sealing
51 - Filter cleaning device 51a - Wash water supply pipe
51b - Horizontal extension part 51c - Vertical extension part
51d-side nozzle 51e-upper nozzle
51f - Water supply hub 51k - Fixing nut
51m - Support holder 51n - Wash water outlet
51p - communication path 51r - catchment space
51s - male threads 51t -
51v - Supporting groove 53 - Drain weir
55 - Drain valve 57 - Drain valve
59 - Plug 61 - Connecting rod
63 - Support tray 65 - Support frame
67 - Main processing space

Claims (4)

The filter module part is sprayed to the filter module part in the state of being installed on the upper part of the filter module part for removing contaminants by passing the polluted water flowing in the inside thereof in the radial direction, As such,
A tubular support fixed to a central upper portion of the filter module and fixed to the lower end of the wash water supply pipe through a fixing nut so as to receive wash water supplied from the wash water supply pipe and pass the wash water downward through the communication path, holder;
A cup-shaped water supply hub rotatably supported at a lower portion of the cylindrical support holder and having a lower end closed to receive the wash water passed through the cylindrical support holder;
A hollow washing water outlet pipe having a rear end fixed to the cup-shaped water supply hub and extending toward an outer peripheral side of the filter module;
The water supply device according to any one of claims 1 to 3, wherein the water supply hub is provided with a hollow water supply outlet, A nozzle installed behind the target rotation direction so as to rotate the cleaning water outlet and turn the periphery of the filter module part; And
And a ring-shaped locking part protruding from the lower end of the cylindrical support holder so as to have an E-shaped cross section and extending in the circumferential direction of the cylindrical support holder, and a support groove provided in the cup-shaped water supply hub for rotatably receiving the locking part Configured sliding means;
And a filter cleaning device for cleaning the water treatment facility.
delete The method according to claim 1,
The hollow washing water outlet pipe is connected to a cup-shaped water supply hub at its rear end and extends horizontally in a radial direction of the filter module part at an upper portion of the filter module part. And
A vertical extension extending in a vertical direction in communication with the horizontal extension and spaced parallel to an outer circumferential surface of the filter module;
And a filter cleaning device for cleaning the water treatment facility. delete

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