KR102070679B1 - Water purifying system having Filter cleaning structure - Google Patents

Abstract

The present invention utilizes purified water from which foreign matters are removed by filtering foreign substances such as iron, lime, and suspended solids contained in groundwater, etc., disposed in farms, barns, car washes, etc., in particular, to stabilize the filter layer in which clogging is caused by the foreign substances. The present invention relates to a water purification system having a filter cleaning structure, which is cleaned so as to have continuous filtration efficiency.
In the present invention, the hollow filter to pass the raw water through the filter layer into the hollow portion; A filter unit including the hollow filter, a filter housing including a raw water supply port for supplying raw water supplied along a supply pipe to an outside of the hollow filter, and a water purification drain hole for draining purified water passing through the filter layer of the hollow filter; ; It is configured to include a feed pump including a feed pump for supplying the raw water supplied along the feed pipe in the filter housing through the supply pipe,
The filter unit includes an external cleaning unit for discharging washing water to the filter wall outer wall of the hollow filter to clean the filter wall outer wall, and an internal cleaning unit for discharging washing water to the filter wall inner wall of the hollow filter to clean (backwash) the inner wall of the filter layer. It is characterized by the addition.

Description

Water purifying system having Filter cleaning structure

The present invention relates to a water purification system having a filter cleaning structure, and more particularly, it utilizes purified water in which foreign substances are removed by filtering foreign substances such as iron, lime, and suspended solids contained in groundwater, which are disposed in farms, barns, and car washes. In particular, the present invention relates to a water purifying system having a filter cleaning structure which stably cleans a filter layer in which clogging caused by the foreign matter and has a continuous filtration efficiency.

In general, in the agricultural process, agricultural water, such as rivers, ditches, rivers, ponds, waterways or other stagnant water, and groundwater, is often supplied to crops for the purpose of good growth and cultivation of crops.

However, the above-mentioned agricultural water is not only muddy water, but also contains various dusts and sand grains having a certain thickness, and thus, when pumping the contaminated water as it is, in particular, water supply nozzles or sprinkler nozzles for drip cultivation. In the case of pesticide spray nozzles and other water jet nozzles, sand grains are blocked, which makes it uncomfortable or unusable. Particularly, in a car wash place using a large amount of water, once used water is not recycled and disposed of as waste water.

In recent years, the use of water purification systems that can properly filter sludge at one end of a water pipe line has become common.

The conventional water purification system includes a filter unit in which a hollow filter is embedded in the filter housing; And a feed water pump unit supplying raw water into the filter housing to allow raw water to pass from the outer wall of the filter layer of the hollow filter to the inner wall.

However, in the filter layer of the hollow filter, a large amount of foreign matter remains in the repetitive filtration process of raw water, and clogging of the filter layer occurs due to such foreign matter.

As such a blockage of the filter layer occurs, the permeation efficiency of the raw water is lowered, and as a result, the performance of the water purification system is reduced. Accordingly, the hollow filter is periodically replaced or the hollow filter is taken out of the filter housing and washed. Through this, the blockage of the filter layer is eliminated.

However, when the hollow filter is replaced in the event of clogging of the filter layer, the organic cost increases, and it is not preferable to take the hollow filter out of the filter housing and to wash it, which also requires time and labor.

In addition, the washing from the inside of the hollow filter to the outside causes work difficulties, and if the washing cycle is missed, it is difficult to eliminate the blockage of the filter layer through washing, and thus, the replacement of the hollow filter is required.

Therefore, there is a need in the art for the development and dissemination of a filter cleaning structure that periodically cleans the filter layer disposed in the filter housing to enable reuse.

Patent Registration No. 10-0661770 Utility Model Registration No. 20-0436287 Utility Model Registration No. 20-0300516 Utility Model Registration No. 20-0300519

An object of the present invention devised to solve the above problems, the filter cleaning structure to stably remove the foreign matter remaining on the outer wall and the inner wall of the filter layer in the hydraulic pressure of the discharged washing water, so that the filtration efficiency of the filter layer is continuously maintained To provide a water purification system having a.

The above object is achieved by the following configuration provided in the present invention.

Water purification system having a filter cleaning structure according to the present invention,

A hollow filter for allowing raw water to pass through the filter layer and into the hollow portion; A filter unit including the hollow filter, a filter housing including a raw water supply port for supplying raw water supplied along a supply pipe to an outside of the hollow filter, and a water purification drain hole for draining purified water passing through the filter layer of the hollow filter; ;

It is configured to include a feed pump including a feed pump for supplying the raw water supplied along the feed pipe in the filter housing through the supply pipe,

The filter unit includes an external cleaning unit for discharging washing water to the filter wall outer wall of the hollow filter to clean the filter wall outer wall, and an internal cleaning unit for discharging washing water to the filter wall inner wall of the hollow filter to clean (backwash) the inner wall of the filter layer. It is characterized by the addition.

Preferably, the external cleaning unit is disposed in a rotational structure in the filter housing and connected to the external cleaning pipe, the rotational connecting body having at least one nozzle tube adjacent to the outer wall of the filter layer of the hollow filter; One or more cleaning nozzles disposed in each nozzle tube for discharging the washing water to the outer wall of the filter layer of the hollow filter,

The cleaning nozzle is configured to discharge the washing water inclined in the other direction to the outer wall of the filter layer of the hollow filter, so that the rotating connector rotates in one direction by the hydraulic pressure of the washing water inclined to the outer wall of the hollow filter.

More preferably, the inner cleaning unit is disposed in a rotational structure in the filter housing and connected to the inner cleaning tube, the rotating connector having at least one nozzle tube adjacent to the inner wall of the filter layer of the hollow filter; It comprises at least one cleaning nozzle disposed in each nozzle tube for discharging the washing water to the inner wall of the filter layer of the hollow filter,

The washing nozzle is configured to discharge the washing water inclined in the other direction to the inner wall of the filter layer of the hollow filter, so that the rotating connector rotates in one direction by the hydraulic pressure of the washing water inclined to the inner wall of the hollow filter.

In addition, the inner cleaning pipe is disposed in communication with an air injection pipe for injecting compressed air into the cleaning water supplied to the internal cleaning unit through the internal cleaning pipe.

In addition, the purified water drain pipe is formed with a purified water reservoir for storing the purified water drained along the purified water drain pipe, the purified water recirculation pipe is formed between the purified water reservoir and the inlet of the feed water pump, the inner wall of the filter layer of the hollow filter through the internal cleaning unit In the cleaning, the purified water stored in the purified water storage tank is configured to clean while internally circulating.

As described above, in the present invention, by forming a filter cleaning structure for cleaning both sides of the filter layer including the outer diameter surface of the filter layer and the inner diameter surface of the filter, the foreign matter remaining in the filter layer is quickly and stably removed through the two-side cleaning of the filter layer. Thus, the continuous filtration performance of the hollow filter can be maintained.

In particular, the outer wall cleaning unit and the inner wall cleaning unit constituting the filter cleaning structure according to the present invention, without providing a separate drive means such as an electric motor, while rotating in one direction by the hydraulic pressure of the discharged washing water, the inner wall and outer wall of the filter layer In this regard, the structure is configured to clean, respectively, so that the structure can be simplified, and the filter layer can be evenly cleaned.

In addition, in the present invention, by circulating the purified water without using excessive purified water in the outer wall cleaning process of the hollow filter filter layer or by cleaning the hollow filter filter layer through raw water, the consumption of purified water unnecessary for the washing process of the inner wall and outer wall of the hollow filter filter layer. Prevent or minimize them.

In particular, in the internal cleaning (backwashing) process of the hollow filter filter layer, since the purified water is internally circulated to facilitate the internal cleaning of the filter layer, the consumption of the purified water may be minimized.

Figure 1 shows the overall configuration of the water purification system having a filter cleaning structure proposed as a preferred embodiment in the present invention,
2 is a water filter having a filter cleaning structure proposed as a preferred embodiment of the present invention, a hollow filter, an external cleaning unit for cleaning the outer wall of the hollow filter, and an inner wall cleaning of the hollow filter Shows the arrangement of the cleaning unit,
3 and 4 show the detailed configuration of the external cleaning unit and the internal cleaning unit in the water purification system having a filter cleaning structure proposed as a preferred embodiment of the present invention,
5 and 6 show the filter layer outer wall cleaning state and the filter layer inner wall cleaning state of the hollow filter in the water purification system having the filter cleaning structure proposed as a preferred embodiment of the present invention, respectively.

Hereinafter, with reference to the accompanying drawings will be described in detail the water purification system having a filter cleaning structure proposed as a preferred embodiment of the present invention.

Figure 1 shows the overall configuration of the water purification system having a filter cleaning structure proposed as a preferred embodiment in the present invention, Figure 2 is a water purification system having a filter cleaning structure proposed as a preferred embodiment in the present invention, The arrangement of the hollow filter, the outer cleaning unit to facilitate the outer wall cleaning of the hollow filter, and the inner cleaning unit to facilitate the inner wall cleaning of the hollow filter, Figure 3 and Figure 4 is proposed as a preferred embodiment in the present invention In a water purification system having a filter cleaning structure, a detailed configuration of an external cleaning unit and an internal cleaning unit is shown, and FIGS. 5 and 6 show a water purification system having a filter cleaning structure proposed as a preferred embodiment of the present invention. Therefore, the filter layer outer wall cleaning state and the filter layer inner wall cleaning state of the hollow filter are respectively shown.

The water purification system 1 having the filter cleaning structure according to the present invention includes a water supply pump 20 for supplying raw water as shown in FIGS. 1 and 5 to 6; It includes a filter unit 10 for discharging the purified water, which is raw water from which the foreign matter is removed by passing the raw water supplied through the feed water pump unit 20 through the filter layer 12 of the hollow filter 11.

The filter unit 10 includes: a hollow filter 11 for transmitting raw water from the outside to the inside of the filter layer 12 to introduce purified water filtered by the filter layer 12 into the hollow part; The raw water supply port 13a, which is a water supply path of raw water, which receives the hollow filter 11 in the storage space and is supplied to the outer space of the hollow filter 11, and a drainage path of purified water discharged through the hollow part of the hollow filter 11. And a filter housing 13 in which a phosphorous water drain 13b is formed.

In addition, the feed water pump unit 20 is a filter housing 13 of the filter unit 10 through the supply pipe 23 to the raw water pipe 21 to feed the raw water and the raw water supplied along the raw water pipe 21. Including the feed water pump 22 to feed water, the raw water introduced along the raw water pipe 21 by the pumping action of the feed water pump 22 is forced into the filter housing 13 along the supply pipe 23.

Therefore, as shown in FIG. 1, the raw water supplied into the filter housing 13 by the water supply action of the water supply pump 20 may be formed at the outer wall of the filter layer 12 of the hollow filter 11 disposed in the filter housing 13. The foreign matter is filtered while passing in the inner wall direction, the purified water filtered through the filter layer 12 is moved along the hollow portion of the hollow filter 11 and drained through the purified water drain port 13b connected to the purified water drain pipe 15. do.

On the other hand, in the present invention, by adding a new filter cleaning structure for quickly cleaning the filter layer 12 of the hollow filter 11 is clogged by foreign matters by repeated filtration of the raw water to remove the foreign matters, the added filter Through the periodic cleaning of the filter layer 12 by the cleaning structure to maintain the continuous filtration performance of the hollow filter (11).

In the filter cleaning structure proposed in the present invention, the hollow filter 11 cleans both surfaces of the filter layer 12 including the outer wall and the inner wall of the filter layer 12, so that foreign matter remaining in the filter layer 12 is more stably. To be removed.

To this end, in the present embodiment, as shown in FIGS. 1 to 6, external cleaning for cleaning the outer wall of the filter layer 12 of the hollow filter 11 by discharging the washing water to the outer wall of the filter layer 12 of the hollow filter 11. The unit 30 and an internal cleaning unit 40 for cleaning the inner wall of the filter layer 12 of the hollow filter 11 by discharging the washing water to the inner wall of the filter layer 12 of the hollow filter 11.

Here, the washing water discharged by the external cleaning unit 30 and the internal cleaning unit 40, including the raw water or purified water, may be provided with a separate pumping device, this also the scope of the present invention I am going to.

However, the present embodiment proposes to utilize the raw water and purified water supplied through the feed water pump unit 20 as washing water in a more preferred embodiment.

Particularly, in the present invention, the external cleaning unit 30 and the internal cleaning unit 40 for rotating both surfaces of the filter layer 12 are configured to be rotatable, and the cleaning units 30 and 40 are formed of the filter layer 12. The filter layer 12 is evenly cleaned while turning the outer wall or the inner wall.

At this time, the cleaning units 30 and 40 are configured to evenly clean the outer wall and the inner wall of the filter layer 12 of the hollow filter 11 while self-rotating by water pressure without a separate driving source such as an electric motor. Operational stability is ensured with a simplified structure.

To this end, in the present embodiment, the external cleaning unit 30 is disposed in a rotating structure in the filter housing 13, and has a rotational connecting body having one or more nozzle tubes 32 proximate to the outer wall of the hollow filter 11. 31); The rotating connector 31 is disposed in the nozzle pipes 32 and discharges the washing water inclined to the outer wall of the filter layer 12 of the hollow filter 11, and is discharged inclined to the outer wall of the hollow filter 11. ) Includes one or more cleaning nozzles (33) to rotate in one direction.

In addition, the internal cleaning unit 40 is disposed in the filter structure 13 in a rotational structure, and has a rotational connector 41 having one or more nozzle tubes 42 proximate to the inner wall of the filter layer 12 of the hollow filter 11. )Wow; The rotating connector 41 is disposed in each nozzle tube 42 to discharge the washing water inclined to the inner wall of the hollow filter 11 and discharged inclined to the inner wall of the hollow filter 11 in one direction by the hydraulic pressure of the washing water. It includes one or more cleaning nozzles 43 to be rotated.

Rotating connecting members 31 and 41 constituting the cleaning units 30 and 40 are rotational couplings, rotational nipples, rotational couplings, etc., which can be rotated while forming a state in communication with the cleaning tubes 34 and 44. Rotating connectors of can be adopted.

In the present embodiment, two or more nozzle tubes provided with a plurality of cleaning nozzles (33, 43) in each of the rotating connecting members (31, 41) constituting the external cleaning unit (30) and the internal cleaning unit 40 ( 32 and 42 are arranged at equal intervals.

In addition, the nozzle tubes 32 and 42 may be formed by assembling separately manufactured cleaning nozzles, and the nozzle tubes 32 and 42 may be locally cut in the nozzle tubes 32 and 42 as in the present embodiment. 42) The cleaning nozzles 33 and 43 are cut in themselves.

In addition, a water supply pipe 13a connected to the supply pipe 23 is formed with a drain pipe 14 provided with a drain valve V4, and is formed by an external cleaning unit 30 and an internal cleaning unit 40 to be described later. The sewage after cleaning the filter layer 12 is drained to the outside through the drain pipe (14).

As in this embodiment, the cleaning nozzles 33 and 43 formed in the nozzle tubes 32 and 42 are not discharged orthogonally to the outer wall or the inner wall of the filter layer facing the washing water, and the outer wall or the inner wall of the filter layer 12. When configured to discharge in an inclined direction in the other direction, the rotational connecting members 31 and 41 of the external cleaning unit 30 and the internal cleaning unit 40 including the nozzle tubes 32 and 42 are shown in FIGS. 5 and 6. As shown in FIG. 1, the cleaning nozzles 33 and 43 rotate in one direction by hydraulic pressure formed between the filter layers 12 of the hollow filter 11. As a result, the outer and inner walls of the filter layer 12 of the hollow filter 11 rotate in one direction. While washing the inner wall or outer wall of the filter layer 12 in an inscribed state, the filter is evenly cleaned.

That is, the external cleaning unit 30 discharges the washing water supplied through the feed water pump unit 20 to the other side through the washing nozzles 33 formed in the nozzle pipes 32 to one direction by the hydraulic pressure of the washing water. While rotating continuously, the outer wall of the filter layer 12 facing the hollow filter 11 is evenly cleaned.

In addition, the internal cleaning unit 40 discharges the washing water supplied through the feed water pump unit 20 to the other direction through the washing nozzles 43 formed in the nozzle pipes 42 to the hydraulic pressure of the washing water discharged. As a result, the internal cleaning unit 40 continuously rotates in one direction, and evenly cleans the inner wall of the filter layer 12 of the hollow filter 11.

Meanwhile, in the present invention, the water feed pump 20 is improved to clean the outer wall of the filter layer 12 through raw water without using purified water in the outer wall cleaning process of the filter layer 12 of the hollow filter 11. Is used to clean the inner wall.

In this embodiment, the purified water is circulated internally to prevent or minimize the consumption of purified water when washing the inner wall of the filter layer 12.

To this end, in the present embodiment, the water supply port 21a of the water supply pump 22, the external cleaning pipe 34 of the external cleaning unit 30, the internal cleaning pipe 44 of the internal cleaning unit 40, And a supply pipe 23 communicating with the raw water feed port 13a of the filter housing 13.

In addition, the internal cleaning pipe 44 is arranged in communication with the air injection pipe 45 for injecting the compressed air of high pressure.

Further, the external cleaning pipe 34, the internal cleaning pipe 44, and the supply pipe 23 are provided with a raw water supply valve V1, an external cleaning valve V2, and an internal cleaning valve V3. Thus, by selectively opening and closing the respective valves, the water supply pump 22 selectively communicates with the external cleaning unit 30, the internal cleaning unit 40, and the filter housing 13.

That is, in the filtration process of the raw water through the hollow filter 11, the external cleaning valve (V2) and the internal cleaning valve (V3) is shielded and the raw water supply valve (V1) is opened, the water feed pump (22) The raw water supplied through the water is supplied into the filter housing 13, and foreign substances are filtered out by the hollow filter 11.

When the outer wall of the hollow filter 11 is cleaned, the raw water supply valve V1 and the internal cleaning valve V3 are shielded, and the external cleaning valve V2 is opened to be supplied through the feed water pump 22. Raw water is discharged to the outer wall of the filter layer 12 of the hollow filter 11 through the external cleaning unit 30 to perform external cleaning of the hollow filter 11.

In this process, the washing water which cleans the outer wall of the filter layer 12 is discharged to the outside along the drain pipe 14 formed in the lower portion of the filter housing 13.

In addition, when the inner wall of the hollow filter 11 is cleaned, the raw water supply valve V1 and the external cleaning valve V2 are shielded, and the internal cleaning valve V3 is opened to supply water through the water supply pump 22. The inner wall 12 of the filter layer 12 of the hollow filter 11 is cleaned by the washing water.

However, when raw water is used for washing the inner wall of the filter layer 12, that is, the backwashing process, foreign substances included in the raw water may flow into the inner wall of the filter layer 12 of the hollow filter 11. Purification of raw water may lead to contamination of the purified water.

In consideration of this, in the present invention, the raw water is used to clean the outer wall of the filter layer 12 of the hollow filter 11, but the filter layer is subjected to backwashing by using an integer in the inner wall cleaning of the filter layer 12, that is, the backwashing process. Prevent recontamination of (12).

In particular, in backwashing the filter layer 12 using purified water, the internal circulation structure of the purified water is formed to minimize the use of purified water.

To this end, the purified water shielding valve (V4) for setting the opening and closing state of the discharge port (15a) is disposed in the discharge port (15a) of the purified water drain pipe (15), the purified water reservoir (15) for storing purified water ( While 24 is arranged in communication, a purified water recirculation pipe 25 is disposed between the purified water reservoir 24 and the inlet port 22b of the feed water pump 22.

Further, inlet ports 22b of the feed water pump 22 are provided with inlet control valves V5 and V6 for selectively controlling the communication state between the feed water pipe 21 and the purified water recirculation pipe 25, thereby providing an inlet control valve ( By selective control of V5 and V6, the feed water pump 22 selectively introduces raw water introduced through the raw water pipe 21 or purified water flowing through the purified water recirculation pipe 25.

On the other hand, to describe the cleaning process of the hollow filter 11 filter layer 12 through the cleaning structure configured as described above, when cleaning the outer wall of the first hollow filter 11, as shown in Figure 5 for the raw water supply valve (V1) And the internal cleaning valve V3 is shielded and the external cleaning valve V2 is opened so that the raw water supplied through the feed water pump 22 is filtered through the external cleaning unit 30 in the filter layer 12 of the hollow filter 11. It is discharged to the outer wall to perform an external cleaning of the hollow filter (11).

At this time, the external cleaning unit 30 discharges the raw water discharged through the cleaning nozzle 33 inclined to the outer wall of the filter layer 12 of the hollow filter 11, while rotating the hollow filter in one direction by the water pressure of the discharged raw water The outer wall of the filter layer 12 of 11 is uniformly cleaned, and the raw water which finished cleaning the outer wall of the filter layer 12 is drained to the outside through the drain pipe 14.

When the outer wall cleaning of the filter layer 12 is completed as described above, as shown in FIG. 6, the raw water supply valve V1 and the external cleaning valve V2 are shielded, and the internal cleaning valve V2 is opened.

At the same time, the raw water pipe 21 is shielded from the inlet port 22b of the feed water pump 22 by the inflow control valves V5 and V6 and communicates with the purified water recirculation pipe 25. In this state, the water supply pump 22 pumps the purified water stored in the purified water reservoir 24 to supply water to the internal cleaning unit 40, and the internal cleaning unit 40 is provided on the inner wall of the filter layer 12 of the hollow filter 11. The purified water is discharged to perform internal cleaning of the filter layer 12, that is, backwashing.

At this time, the internal cleaning unit 40 discharges the purified water discharged through the cleaning nozzle 43 inclined in the other direction to the inner wall of the filter layer 12 of the hollow filter 11, rotated in one direction by the water pressure of the discharged purified water While washing, the inner wall of the filter layer 12 of the hollow filter 11 is evenly cleaned.

The internal cleaning unit 40 discharges purified water supplied through the water supply pump 22 through each of the cleaning nozzles 43 and compressed air injected through the air injection pipe 45 at high pressure, thereby providing more stable operation. Internal cleaning of the filter layer, i.e. backwashing, is achieved.

In this process, the washing water that has passed through the filter layer 12 and discharged to the outer wall of the filter layer 12 is discharged to the outside along the drain pipe 14 formed at the lower part of the filter housing 13 due to the large amount of foreign matter. The purified water remaining in the hollow part of the filter 11 is re-introduced into the purified water reservoir 24 through the purified water drain pipe 15, and is re-pumped through the feed water pump 22 to clean the inside of the hollow filter 11 (back washing). ) Continuously.

Accordingly, the present invention periodically cleans both sides of the filter layer 12 of the hollow filter 11, in which clogging caused by foreign matter, by filtration, and quickly and stably removes foreign substances remaining in the filter layer 12. It has a characteristic that the continuous filtration performance of 11) can be maintained.

1. Water purification system with filter cleaning structure
10. Filter section 11. Hollow filter
12. Filter layer 13. Filter housing
13a. Raw water inlet 13b. Water purification drain
14. Drainage pipe 15. Water purification drainage pipe
15a. outlet
20. Feed pump unit 21. Raw water pipe
22. Feed pump 22a. Water supply
22b. Inlet 23. Supply Line
24. Water purification tank 25. Water purification recycle tube
30. External cleaning unit 31. Rotating connector
32. Nozzle tube 33. Cleaning nozzle
34. External cleaning pipe
40. Internal cleaning unit 41. Rotating connector
42. Nozzle tube 43. Cleaning nozzle
44. Internal cleaning pipe 45. Air injection pipe
V1. Raw water supply valve V2. External cleaning valve
V3. Internal cleaning valve V4. Drain valve
V5, V6. Inlet Control Valve

Claims (5)

A hollow filter for allowing raw water to pass through the filter layer and into the hollow portion; A filter unit including the hollow filter, a filter housing including a raw water supply port for supplying raw water supplied along a supply pipe to an outside of the hollow filter, and a water purification drain hole for draining purified water passing through the filter layer of the hollow filter; ; It comprises a feed pump including a feed pump for supplying the raw water supplied along the raw water pipe in the filter housing through the supply pipe,
The filter unit includes an external cleaning unit for discharging washing water to an outer wall of the filter layer of the hollow filter to clean the outer wall of the filter layer, and an internal cleaning unit for discharging washing water to the inner wall of the filter layer of the hollow filter to clean (backwash) the filter layer. In addition, the outer cleaning unit and the inner cleaning unit is configured to be rotated to clean while rotating the filter layer outer wall and inner wall of the hollow filter,
The external cleaning unit is disposed in the filter structure in a rotational structure connected to the external cleaning pipe, the rotating connector having at least one nozzle tube in close proximity to the outer wall of the filter layer of the hollow filter; It comprises at least one cleaning nozzle disposed in each nozzle tube of the external cleaning unit for discharging the washing water to the outer wall of the filter layer of the hollow filter,
The cleaning nozzle of the external cleaning unit is inclined to discharge the cleaning water to the outer wall of the filter layer of the hollow filter in the other direction, the external cleaning unit by the water pressure of the cleaning water formed between the cleaning nozzle of the external cleaning unit and the filter layer outer wall of the hollow filter. The rotating connector of is configured to rotate in one direction,
The inner cleaning unit is connected to the inner cleaning pipe is disposed in the rotating structure in the filter housing, the rotating connector having at least one nozzle tube in close proximity to the inner wall of the filter layer of the hollow filter; It comprises at least one cleaning nozzle disposed in each nozzle tube of the inner cleaning unit for discharging the washing water to the inner wall of the filter layer of the hollow filter,
The cleaning nozzle of the inner cleaning unit discharges the washing water inclined in the other direction to the inner wall of the filter layer of the hollow filter, and the inner cleaning unit is formed by the hydraulic pressure of the washing water formed between the cleaning nozzle of the inner cleaning unit and the inner wall of the filter layer of the hollow filter. Water purification system having a filter cleaning structure, characterized in that the rotating connector of the configuration is configured to rotate in one direction. delete delete The water purification system having a filter cleaning structure according to claim 1, wherein the internal cleaning pipe is arranged in communication with an air injection pipe for injecting compressed air into the cleaning water supplied to the internal cleaning unit through the internal cleaning pipe. According to claim 1, wherein the purified water drain pipe is formed with a purified water reservoir for storing the purified water drained along the purified water drain pipe, the purified water recirculation pipe is formed between the inlet of the purified water reservoir and the feed water pump,
Purifying the filter layer inner wall of the hollow filter through the inner cleaning unit, the water purification system having a filter cleaning structure characterized in that the purified water stored in the purified water storage tank is configured to clean the inner circulation.

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