KR101010350B1 - Backwashable filtration apparatus - Google Patents

Abstract

The present invention relates to a backwash filtration apparatus capable of backwashing a filter even while filtering out foreign substances and microorganisms contained in seawater or freshwater, the body having an outlet pipe, and an inlet pipe having one side inserted into the body, It is installed at one end, the central portion is formed with a hollow portion (hollow part) and the outer peripheral surface includes a hub (hub) formed with a plurality of through holes, and a filter coupled to the upper and lower edges of the hub and the space formed therein, respectively, A plurality of disk filters installed in a shape in which the hollow portions of the hubs are connected to each other to extend the inflow pipe, a drain pipe inserted into one side of the inflow pipe, and one end of the plurality of hubs rotatably connected to one end of the drain pipe, Is inserted into the hollow portion, the suction portion formed in each of the suction port at the end to rotate the suction pipe and the suction pipe protruding to the outer peripheral surface along the longitudinal direction It includes a drive device, when the suction pipe is rotated by the suction port formed in the suction pipe is provided with a backwash filtration device sequentially connected to a plurality of through-holes formed in the hub, it can maximize the efficiency of the filtration work and sterilization effect of UV and photocatalyst The adherent organisms can be prevented from adhering to the furnace disk filter.

Ballast Water, Filtration, Disc Filters, Back Washing

Description

Backwash Filtration {BACKWASHABLE FILTRATION APPARATUS}

The present invention relates to a backwash filtration apparatus, and more particularly, to a backwash filtration apparatus capable of backwashing a filter while filtering foreign substances and microorganisms contained in seawater or freshwater.

The ship is fitted with ballast tanks to control the balance and draft of the ship. In more detail, when the cargo is loaded on the ship, there is a case where the front, rear, left and right balance of the ship is not balanced. In this case, ballast water is introduced into or out of the ballast tanks installed on the hull to maintain the balance of the ship.

In addition, since the ship is generally designed to enable economic and stable operation when the cargo is loaded, the amount of ballast water in the ballast tank is adjusted according to the cargo load, so that the conditions similar to those in which the cargo is loaded To be

Here, the amount of ballast water in the ballast tank is controlled by a method of inflow or outflow of seawater or fresh water around the vessel into the ballast tank by a pump. However, in the process of introducing the ballast water into the ballast tank, foreign substances in the area where the vessel is located, ie, inorganic materials such as gravel, sand, and mud, as well as living organisms and organic materials such as shellfish, shellfish, and plankton are introduced together. .

Therefore, when the ship is operated over a long distance, such foreign matter may settle and settle in the ballast tank, which may reduce the function of the ballast tank. In addition, when the vessel loads the cargo ballast water in the ballast tank while loading the cargo, the living organisms and organic substances as described above are leaked out together, causing a change in the surrounding ecosystem and adversely affect the environment.

According to data from the International Maritime Organization (IMO), cholera, European greenfish, Asian kelp, and North Pacific starfish migrated to other parts of the world through ballast water from the 1950s to 2007. It caused damages, resulting in annual damages of 100 trillion won worldwide.

Accordingly, the International Maritime Organization introduced the Ballast Water Purification Regulation in 2004 to prevent ecosystem damage caused by ballast water, and vessels that did not comply with this regulation were not allowed to enter ports in 2009. Therefore, a ship sailing a long distance is required to install a device that can remove the foreign matter, such as organisms or organic matter contained in the ballast water.

By the way, a large number of ballast water is used for large ships, such as a tanker, a container ship, and an LNG carrier, which sail | distantly sails. For example, a vessel with a load of 250,000 tonnes will use about 100,000 tonnes of ballast water.

Therefore, the development of a device that can quickly filter a large amount of sea water or fresh water is urgently required.

The present invention has been made in view of the necessity as described above, an object of the present invention is to provide an apparatus capable of quickly filtering and removing foreign matter contained in a large amount of sea water or fresh water.

In order to achieve the above object, according to an aspect of the present invention, the outlet pipe is formed, the inlet pipe is inserted into one side, the body is installed at one end of the inlet pipe, the central portion (中空 部) Is formed and the outer circumferential surface is formed with a hub having a plurality of through holes, a filter coupled to the upper and lower edges of the hub and having a space formed therein, and radially installed on the outer circumferential surface of the hub to partition the plurality of spaces inside the filter. A plurality of disc filters each having a plurality of ribs for supporting the filter, the hollow parts of the plurality of hubs being connected to each other and extending in the inlet pipe, a drain pipe having one side inserted into the inlet pipe, and one end thereof A plurality of suction portions rotatably connected to one end of the drain pipe, inserted into the hollow portion of the plurality of hubs, each of which has a suction port formed at the end thereof along the longitudinal direction Comprising a drive device for rotating the suction pipe and the suction pipe is formed to project to the main surface, if the suction pipe is rotated from the suction port formed in the suction pipe with a plurality of through holes and backwashing filtering unit are sequentially formed on the connection with the hub is provided.

Here, the other end of the drain pipe, the back washing valve is installed, the back washing valve or the drain pipe may be further provided with a suction pump for generating a negative pressure.

At this time, the inlet and outlet pipes of the backwashing filtration device are further provided with a pressure sensor, so that the backwash valve is opened and the suction pump and the driving device are operated when the pressure difference in the inlet and outlet pipes is greater than a preset value. Can be.

Alternatively, the timer may be further provided to the backwash filtration device at a predetermined time so that the backwash valve is opened for a preset time according to the timer signal, and the suction pump and the driving device are operated.

Meanwhile, a wedge wire filter or a wire mesh filter may be used as the filter of the disc filter.

The disc filter may further include a rim connecting the ends of each of the plurality of ribs, and the plurality of ribs may have a shape in which the thickness of the hub in the central axis direction becomes thinner as the distance from the hub increases.

In addition, the body of the backwash filtration apparatus may be formed with a sterilizing material inlet for sterilizing material injection, the backwash filtration apparatus may be further provided with a position sensor for detecting the position of the suction unit. Here, the position detection sensor may be an angle sensor installed in the driving device to detect the degree of rotation of the suction pipe.

On the other hand, the inner surface of the body of the backwash filtration apparatus may be provided with an ultraviolet light emitting module for irradiating ultraviolet rays into the body. The backwash filtration apparatus further includes a washing arm connected to one end of the driving device and a brush attached to the other end of the washing arm. When the washing arm is rotated by the driving device, the surface of the ultraviolet light emitting module is washed by the brush. You can do that. In addition, a photocatalyst may be coated on the surface of the disk.

The present invention provides a backwash filtration apparatus capable of backwashing a filter even while filtering seawater or freshwater, so that the performance of the filter is continuously maintained without having to stop the seawater or freshwater filtration to clean the filter. By doing so, the efficiency of the filtration operation can be maximized, and the adherent organism (固 着 生) can be prevented from adhering to the disk filter due to the sterilization effect of ultraviolet light and photocatalyst.

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

Figure 1 is a longitudinal cross-sectional view of the backwash filtration apparatus according to an embodiment of the present invention.

Referring to FIG. 1, the backwash filtration apparatus 100 is roughly divided into a body 101, a plurality of disk filters 150, a suction pipe 140, and a driving device 141.

One side of the inlet pipe 110 is inserted into the body 101 in which a space is formed and an outlet pipe 103 is formed in a portion thereof. A plurality of disk filters 150 are installed at the end of the portion inserted into the body 101 of the inlet pipe 110. The cover 111 is installed at the center of the uppermost one of the plurality of disk filters 150.

On the other hand, the body 101 is a drain pipe 130 is installed. One side of the drain pipe 130 penetrates the body 101 and the inflow pipe 110, and is installed such that one end of the drain pipe 130 is located in the inflow pipe 110.

One end of the drain pipe 130 is rotatably connected to one end of the suction pipe 140. At this time, the suction pipe 140 is installed to be located in the space formed by the central portion of the plurality of disk filter 150. One end of the drive shaft 142 installed through the cover 111 is connected to the other end of the drain pipe 130, and the other end of the drive shaft 142 is connected to the drive device 141 installed on the upper portion of the body 101. do.

The other end of the drain pipe 130 is provided with a backwash valve 133 for opening and closing the drain pipe 130.

Here, the structure of the disc filter 150 and the suction pipe 140 will be described first with reference to FIGS. 2 and 3 to describe the structure of the backwash filtration apparatus 100 in detail.

2 shows an exploded perspective view of a disk filter 150 used in a backwash filtration device (see 100 of FIG. 1) in accordance with one embodiment of the present invention.

Referring to FIG. 2, the disc filter 150 is roughly divided into a hub 151, a rib 152, and a filter 155.

A hollow portion is formed at the center of the hub 151, and a plurality of through holes 154 are formed at the outer circumferential surface of the hub 151. The through hole 154 is formed to penetrate from the outer circumferential surface of the hub 151 to the hollow portion, and the plurality of through holes 154 are formed along the outer circumferential surface of the hub 151.

Meanwhile, a plurality of ribs 152 are radially installed or protruded from the outer circumferential surface of the hub 151. At this time, the rib 152 is installed or protruded in the portion of the outer peripheral surface of the hub 151 is not formed through the hole 154. The filter 155 is coupled to upper and lower edge portions of the hub 151.

The filter 155 has a disk shape in which a hole is formed in the center portion. The size of the through hole formed at the center of the filter 155 is somewhat smaller than the diameter of the hub 151, so that when the plurality of filters 155 are respectively coupled to the hub 151, the through holes formed at the center of each of the plurality of filters 155 are provided. The edge portion of is coupled to the upper and lower edge portion of the hub 151.

The plurality of filters 155 coupled to the hub 151 form a space therein, which is divided into a number of ribs 152 by the plurality of ribs 152. That is, one through hole 154 exists in each of the plurality of spaces defined by the rib 152. In addition, the filter 155 is supported by the rib 152, so as to maintain a space formed therein even when a portion of the filter 155 is slightly applied.

Therefore, the disk filter 150 has a hollow disk shape having a space formed therein as a whole.

On the other hand, the outer edge of the disk filter 150 is further provided with a rim 153 connecting the ends of each of the plurality of ribs 152, it is possible to improve the structural robustness of the disk filter 150.

That is, when the rim 153 is not provided in the disk filter 150, the outer edge portions of the plurality of filters 155 are joined to each other, so that the plurality of filters 155 are supported only by the plurality of ribs 152. . On the other hand, when the rim 153 is installed in the disc filter 150, the outer edge portions of the plurality of filters 155 are joined to the rim 153, and the ends of each of the plurality of ribs 152 are connected to each other, so that the disc filter Overall structural robustness of 150 is improved.

Meanwhile, as described with reference to FIG. 1, a plurality of disk filters 150 are installed in the backwash filtration apparatus (see 100 of FIG. 1) according to the exemplary embodiment of the present invention. Here, a plurality of disk filters 150 are connected in the central axis direction of the hub 151.

However, when a plurality of disk filters 150 are used, the distance between adjacent disk filters 150 is narrowed. Therefore, the flow of fluid flowing between the filters 150 installed in the adjacent disk filter 150 may not be smooth.

To prevent this, the thickness of the axial direction of the hub 151 may be thinner as the plurality of ribs 152 move away from the hub 151, that is, toward the end direction of each of the plurality of ribs 152. As the thickness of the rib 152 becomes thinner, the disk filter 150 also becomes thinner toward the edge, so that the distance between the adjacent filters 155 of the plurality of disk filters 150 increases, so that the adjacent filter 155 The flow of fluid between them is smooth.

In the disk filter 150 having the structure as described above, the fluid flows into the space inside the filter 155 through the hollow portion and the through hole 154 of the hub 151, and then passes through the filter 155. . Alternatively, the fluid filtered while passing through the filter 155 may pass through the through hole 154 and flow out to the hollow portion of the hub 151.

For reference, the filter 155 may use a wire wedge wire filter as shown, or may be a wire mesh filter using a mesh manufactured by weaving steel wires although not shown. In the case of using a wire mesh filter, the filter 155 may be manufactured by stacking several layers of meshes.

In addition, reference numeral which is not described is the support rod 157, and the wedge wire filter will be described with reference to FIG.

3 is an enlarged view of the portion indicated by A in FIG. 2.

Referring to FIG. 3, a plurality of wedge wires 156 having a triangular cross section are fixed to the support rod 157 at regular intervals. Therefore, when the fluid passes through the narrow gap S2 formed between the plurality of wedge wires 156, the solid particles larger than the diameter of the narrow gap S2 among the solid particles included in the fluid are added to the wedge wire 156. You will not get through it.

However, when a fluid containing solid particles flows in the wide gap S1 of the wedge wire 156, the solid particles are not caught between the wide gap S1 and the narrow gap S2 of the wedge wire 156. May occur.

Therefore, the wedge wire filter (see 150 of FIG. 2) is generally used to allow the fluid containing the solid particles to flow in the narrow gap S2, and when removing the solid particles filtered by the narrow gap S2. Only the liquid containing no foreign matter is back sprayed in the direction of the wide gap S1 so that the solid particles are removed, that is, backwashed.

Therefore, when the wedge wire filter is applied to the disc filter (see 150 of FIG. 2) used in the embodiment of the present invention, the portion in which the narrow gap S2 of the filter (see 155 of FIG. 2) is formed is a rib 152. ), The foreign matter filtered by the disk filter (see 150 in FIG. 2) remains in the disk filter (see 150 in FIG. 2).

Figure 4 is a partial perspective view for explaining the operation of the suction pipe of the backwash filtration apparatus according to an embodiment of the present invention.

Referring to FIG. 4, as described with reference to FIG. 1, one end of the suction pipe 140 is rotatably connected to the one end of the drain pipe 130 by the rotation connection part 131. And, the other end of the suction pipe 140 is connected to the drive shaft 142 connected to the drive device 141.

A plurality of suction parts 145 protrude from the outer circumferential surface of the suction pipe 140 along the longitudinal direction. Inlets 146 are formed at ends of the plurality of suction units 145.

In this case, an end portion of the suction part 145 having the suction port 146 may have an arc shape. The arc of the inlet port 146 has a radius of curvature equal to the inner radius of the hollow part of the hub (see 151 in FIG. 2) in the horizontal direction with respect to the central axis of the suction pipe 140. That is, the edge portion of the suction port 146 has a shape in which the upper and lower sides protrude most.

Therefore, when the suction part 145 is inserted into the hollow portion of the hub (see 151 of FIG. 2), and the central axis of the hub (see 151 of FIG. 2) coincides with the central axis of the suction pipe 140, the suction port ( The edge portion of 146 is in close contact with the edge portion of the through hole (see 154 in FIG. 2). Here, the inlet 146 and the through hole (see 154 of FIG. 2) have a corresponding diameter.

5 is a cross-sectional view of the backwash filtration apparatus according to one embodiment of the present invention, taken along the line X-X 'shown in FIG.

1 and 5 will be described with reference to the structure and operation of the backwash filtration apparatus according to an embodiment of the present invention.

Hollow portions formed on the hubs 151 of the plurality of disc filters 150 are connected to each other at the end of the inflow pipe 110 and are installed in a shape extending the inflow pipe 110. That is, the space formed by connecting the plurality of hubs 151 has a cylindrical shape having a plurality of through holes 154 formed on an inner circumferential surface thereof.

In this manner, the suction pipe 140 is rotatably installed in the cylindrical space formed by the plurality of hubs 151. At this time, the suction pipe 140 is installed so that the central axis of the cylindrical space formed by the hub 151 of the plurality of disk filters 150 coincides with the central axis of the suction pipe 140.

Therefore, when the suction pipe 140 rotates, the plurality of suction ports 146 formed in the suction pipe 140 are sequentially connected to the plurality of through holes 154 formed in the hub 151 one by one.

The backwash filtration device 100 according to an embodiment of the present invention having the structure as described above is operated as follows. However, arrows shown in the drawings indicate the flow direction of sea water or fresh water.

Sea water or fresh water introduced through the inlet pipe 110 is introduced into a cylindrical space formed by the hub 151 of the plurality of disk filters 150. Thereafter, seawater or fresh water is introduced into the disc filter 150 through the plurality of through holes 154 formed in the hub 151.

The seawater or freshwater introduced into the disk filter 150 passes through the filter 155. In this process, foreign substances contained in the seawater or freshwater are filtered by the filter 155 and remain in the space in the disk filter 150. Done.

The seawater or fresh water 2 from which foreign matter is removed by the filter 155 of the disk filter 150 flows out of the body 101 through the outlet pipe 103 through the space inside the body 101.

However, when a large amount of seawater or fresh water containing foreign matter is filtered through the disk filter 150, a large amount of foreign matter accumulates in the space inside the disk filter 150. In addition, foreign matter adheres to the inner surface of the filter 155, thereby lowering the filtration efficiency of the filter 155.

At this time, when the backwash valve 133 is opened, the foreign matter accumulated in the space inside the disc filter 150 is connected to the through hole 154 and the through hole 154 together with the seawater or fresh water 2 in the body ( It is introduced into the suction pipe 140 via 146.

Sea water or fresh water 3 mixed with foreign substances introduced into the suction pipe 140 is discharged to the outside of the body 101 through the drain pipe 130 connected to the suction pipe 140. Seawater or fresh water 3 mixed with foreign matters may be disposed of properly, or may be properly disposed depending on the nature of the foreign matters such as flowing back into the river or the sea.

However, as described with reference to FIG. 2, the inner space of the disc filter 150 is divided into a plurality of rims 152, and one through-hole 154 is positioned in each of the divided inner spaces. Therefore, the portion in which the foreign matter accumulated in the disk filter 150 is discharged through the suction pipe 140, that is, the portion which is backwashed, is formed in the through hole 154 and the suction port 146 in the space in the plurality of partitioned disk filter 150. ) Is part of one compartment connected.

Therefore, in order to remove the foreign matter accumulated in the entire inner space of the disk filter 150, the suction pipe 140 must be rotated. That is, while the suction pipe 140 rotates, the suction port 146 is sequentially connected to the plurality of through holes 154 one by one, and the foreign matter accumulated in one compartment of the inner space of the disk filter 150 divided into the plurality of sequentially As a result, backwashing to flow to the suction pipe 140 is performed.

At this time, the seawater or fresh water (1) flowing into the inlet pipe 110 flows in the direction in the body 101 in the section except the section in which the through-hole 154 connected to the inlet 146 of the plurality of through-holes 154 is located. The foreign matter contained in the sea water or fresh water (1) is filtered.

Therefore, without the need to stop the backwash filtration device 100 to remove the foreign matter attached to the disk filter 150, while the backwashing while the sea water or fresh water 1 is continuously filtered, the backwash filtration device 100 ) Filtration efficiency is improved.

However, if the suction pipe 140 is continuously rotated before a proper amount of foreign matter accumulates in the inner space of the disk filter 150, the filtration efficiency may be reduced. Therefore, it is necessary to confirm whether or not foreign matter has accumulated to such an extent that the filtration performance of the disk filter 150 is reduced.

Therefore, when the pressure sensors 121 and 122 are installed in the inlet pipe 110 and the outlet pipe 103, respectively, and the pressure difference between the two pressure sensors 121 and 122 is measured, the suction pipe 140 is rotated to rotate the disk filter ( The degree to which the foreign matter accumulated in 150) needs to be removed can be seen.

That is, when a large amount of foreign matter accumulates in the disk filter 150, foreign matter is attached to the inner surface of the filter (see 155 of FIG. 2), thereby reducing the amount of seawater or fresh water 2 passing through the filter (see 155 of FIG. 2). . Therefore, the pressure of the outlet pipe 103 is gradually lower than the pressure of the inlet pipe 110, and as the pressure difference increases, the filtration efficiency of the backwash filtration device 100 decreases, and if the pressure difference further increases, the filter ( 2) may be damaged.

Therefore, when the pressure difference between the two pressure sensors 121 and 122 is increased to a predetermined value or more, the foreign matter accumulated in the inner space of the disc filter 150 by opening the backwash valve 133 and operating the driving device 141. The back washing to be discharged through the suction pipe 140 and the drain pipe 130 may be performed.

When the foreign matter accumulated in the inner space of the disk filter 150 and the foreign matter attached to the inner surface of the filter (see 155 of FIG. 2) are removed, the seawater or fresh water 1 is smoothly passed through the disk filter 150 and filtered. The pressure difference between the pressure sensors 121 and 122 is reduced to less than a predetermined value, so that the backwash filtration apparatus 100 can maintain efficient filtration of seawater or fresh water 1.

Alternatively, a timer (not shown) that issues a signal at a predetermined time is installed, and the backwash valve 133 is opened for a preset time according to the signal of the timer (not shown), and the driving device 141 is operated. In this case, the foreign matter accumulated in the internal space of the disk filter 150 may be periodically removed.

On the other hand, when there is a portion in which the foreign matter in the internal space of the plurality of partitioned portion of the disk filter 150 is not removed, the filtration efficiency of the backwash filtration device 100 is not optimized. Therefore, in order to remove foreign substances in the entire inner space of the disc filter 150, it should be possible to determine whether the suction pipe 140 is sufficiently rotated.

Therefore, a position detecting sensor (not shown) that can grasp the position of the suction unit 145 is installed, and whether the suction port 146 has passed through all through holes 154 by using the position detecting sensor (not shown). In this case, foreign matter accumulated in the entire internal space of the disc filter 150 may be removed.

As a method of determining the position of the suction unit 145, a plurality of limit switches (not shown) or the like contacting with the suction unit 145 may be installed in the hub 151 of the disc filter 150. 145 may be identified. Alternatively, by installing an angle sensor 170 that can measure the rotated angle of the suction pipe 140 in the drive device 141, the position of the suction port 146 may be determined. Although not shown, the angle sensor may be installed on the drive shaft. In addition, various methods for identifying the position of the suction unit 145 may be used.

However, in order to efficiently remove the foreign matter accumulated in the inner space of the disk filter 150, it is necessary to increase the flow rate of the seawater or fresh water 3 including the foreign matter introduced into the suction pipe 140. Therefore, by installing the suction pump 135 in the drain pipe 130 or the backwash valve 133 to generate a negative pressure in the drain pipe 130 and the suction pipe 140, seawater or fresh water (3) containing foreign matter Can increase the flow rate.

Here, if the time required to remove the foreign matter accumulated in the inner space of the disc filter 150 by increasing the flow rate of the sea water or fresh water (3) containing the foreign matter, the whole of the disk filter 150 is sea water or fresh water ( Since the time used for filtration in 1) is increased, the filtration efficiency of the backwash filtration apparatus 100 is also increased.

Accordingly, the backwash filtration apparatus 100 having the structure and operation as described above does not need to stop the seawater or fresh water filtration in order to remove the foreign matter accumulated in the disc filter 150, but the disk filter does not need to be stopped. Since the performance of 150 can be maintained continuously, the efficiency of the filtration operation is maximized.

On the other hand, plankton, microorganisms and bacteria, which are small enough not to be filtered by the disk filter 150 included in the sea water or fresh water 1, may be removed using a sterilizing material. Therefore, the sterilization material injection port 105 is installed in a part of the body 101, and the sterilization material injection port 105 is installed in the sterilization material injection device 106, and the seawater or fresh water (2) discharged to the outflow pipe 103 (2). By killing microorganisms and bacteria contained in the), it is possible to prevent the phenomenon that the microorganisms and the like adhere to the disk filter 150, the drive shaft 142, the suction pipe 140 of the filtration device 100.

Here, as the sterilizing substance, various sterilizing substances such as sodium hypochlorite, ozone, hydroxyl radical, etc. can be used, and among them, it can be selected and used without harming the human body and the environment. Is a well-known matter, so the detailed description is omitted.

By the way, the inside of the backwash filtration apparatus 100 according to an embodiment of the present invention may be attached to a fixed organism such as barnacles, turtle hands and the like. In particular, when the adherent organism is attached to the disk filter 150, the filtration efficiency of the backwash filtration device 100 can be reduced. Therefore, it should be possible to prevent the adherent organisms from being attached to the backwash filtration apparatus 100, which will be described with reference to FIGS. 6 to 8.

6 is a longitudinal section of an application example of a backwash filtration device according to an embodiment of the present invention, FIG. 7 is a cross sectional view taken along the line Y-Y 'shown in FIG. 6, and FIG. The part marked B is shown enlarged. It will be described with reference to Figures 6 to 8 together.

6 and 7, the ultraviolet light emitting module 180 is installed inside the body 101 of the backwashing filtration apparatus 100 according to an embodiment of the present invention.

The ultraviolet light emitting module 180 is a collection of a plurality of ultraviolet light emitting elements 181 for irradiating ultraviolet rays, such as ultraviolet light emitting diodes, and is installed to irradiate ultraviolet rays into the body 101. Accordingly, the larvae of the fixed water contained in the seawater or freshwater 2 passing through the disk filter 150 are killed by the ultraviolet light emitted from the ultraviolet light emitting module 180, so that the backwash filtration apparatus 100 It is possible to suppress the adherence of fixed organisms.

In this case, a photocatalyst may be coated on the surface of the disk filter 150 to increase the effect of killing the larvae of the fixed organisms. Since photocatalysts such as titanium dioxide are irradiated with ultraviolet rays to remove contamination and exhibit antimicrobial properties, when the photocatalyst is used, adherent organisms are attached to the disk filter 150, thereby reducing the filtration efficiency of the backwash filtration apparatus 100. The effect of preventing a further increase is further enhanced.

Meanwhile, the ultraviolet light emitting module 180 includes a plurality of ultraviolet light emitting devices 181 and protection means 183 for protecting the ultraviolet light emitting devices 181.

The protection means 183 is for protecting the ultraviolet light emitting device 181, and the ultraviolet light emitting device 181 is in direct contact with seawater or fresh water 2 to prevent a short circuit, etc., and the plurality of ultraviolet light emitting devices 181. This prevents small foreign matter from accumulating in the gaps between the shells. In this case, the protection means 183 is made of a material having a high UV transmittance so that the ultraviolet rays emitted from the ultraviolet light emitting element 181 can be irradiated into the body 101 of the backwash filtration apparatus 100.

However, the amount of ultraviolet light irradiated into the body 101 of the immunity washing filtration apparatus 100 on the surface of the protection means 183 by foreign matters such as fixed organisms or mud is reduced, and the adhesion of the fixed organisms by the ultraviolet light and the photocatalyst is reduced. The effect of suppressing can be reduced. Therefore, in order not to reduce the amount of ultraviolet light emitted from the ultraviolet light emitting module 180, the surface of the protection means 183 should be able to be cleaned regularly.

Therefore, one end of the cleaning arm 191 is connected to the drive shaft 142 of the driving device 141, and the brush 195 is attached to the other end of the cleaning plate 191, and when the driving device 141 is operated, the brush By 195, the surface of the ultraviolet light emitting module 180, that is, the surface of the protective means 183 may be cleaned.

At this time, the other end of the cleaning arm 191 is formed to extend in the vertical direction from the top to the bottom of the ultraviolet light emitting module 180, here the brush 195 also extends from the top to the bottom of the ultraviolet light emitting module 180. When the cleaning arm 191 rotates in the horizontal direction in the body 101, the entire ultraviolet light emitting module 180 may be cleaned.

On the other hand, the guide 193 is provided to support the lower end of the other end of the cleaning arm 191 so as not to shake the inside of the body 101 so that the brush (195) is in full contact with the surface of the ultraviolet light emitting module 180 as a whole. .

Accordingly, the surface of the ultraviolet light emitting module 180 may also have a cleaning arm 191 when the disc filter 150 is backwashed by operating the drive unit 141 to maintain high filtration efficiency of the backwash filtration apparatus 100. And the microorganisms and bacteria contained in the sea water or fresh water 2 filtered by the disk filter 150, by preventing the adherent organisms from adhering to the backwash filtration apparatus 100 by being washed by the brush 195. Kill effect is increased.

Here, the angle sensor 170, which is not described, illustrates an example of the position sensor (not shown) described above, and a redundant description thereof will be omitted.

Although the backwash filtration apparatus according to an embodiment of the present invention has been described above, the spirit of the present invention is not limited to the embodiments presented herein, and those skilled in the art to understand the spirit of the present invention are within the scope of the same idea. In the above, other embodiments may be easily proposed by adding, changing, deleting, or adding a component, but this is also within the scope of the present invention.

1 is a longitudinal cross-sectional view of a backwash filtration device according to an embodiment of the present invention.

Figure 2 is an exploded perspective view of the disk filter of the backwash filtration device according to an embodiment of the present invention.

3 is an enlarged longitudinal sectional view of the portion indicated by A in FIG. 2;

Figure 4 is a perspective view for explaining the operation of the suction pipe of the backwash filtration apparatus according to an embodiment of the present invention.

FIG. 5 is a cross sectional view taken along the line X-X 'shown in FIG. 1; FIG.

Figure 6 is a longitudinal sectional view of an application of the backwash filtration device according to an embodiment of the present invention.

FIG. 7 is a cross sectional view taken along the line Y-Y 'shown in FIG. 6; FIG.

8 is an enlarged view of a portion marked B in FIG. 7;

<Description of the symbols for the main parts of the drawings>

101 body 103 outlet pipe

106: sterilization material injection valve 110: inlet pipe

121, 122: pressure sensor 130: drain pipe

131: rotary connection 140: suction pipe

141: drive device 146: suction port

150: disc filter 170: angle sensor

180 ultraviolet light emitting module

Claims (11)

A body formed with an outlet pipe; An inlet pipe having one side inserted into the body; It is installed at one end of the inflow pipe, the hollow portion is formed in the center and the outer peripheral surface includes a hub formed with a plurality of through holes, the filter is coupled to the upper and lower edges of the hub and the space formed therein, respectively, a plurality of the hub A plurality of disc filters installed in a shape in which the hollow parts of the connecting parts are connected to each other to extend the inlet pipe; A drain pipe having one side inserted into the inflow pipe; A suction pipe having one end rotatably connected to one end of the drain pipe, the suction pipe being inserted into the hollow part of the plurality of hubs, and having a plurality of suction parts each having an inlet at an end thereof protruding on an outer circumferential surface in a longitudinal direction thereof; And Including a drive device for rotating the suction pipe, When the suction pipe is rotated back washing filter is connected to the suction port formed in the suction pipe in sequence with a plurality of through-holes formed in the hub. The method of claim 1, In each of the plurality of disk filters, And a plurality of ribs radially installed on an outer circumferential surface of the hub and partitioning a plurality of spaces inside the filter and supporting the filter. The method of claim 1, A backwash valve installed at the other end of the drain pipe; And a suction pump installed in the drain pipe or the backwash valve to generate a negative pressure. The method of claim 3, Further comprising a plurality of pressure sensors respectively installed in the inlet pipe and the outlet pipe, And a backwash valve is opened when the pressure difference between the inlet pipe and the outlet pipe is greater than or equal to a predetermined value, and the suction pump and the driving device are operated. The method of claim 3, It further includes a timer for signaling every regular time, And a backwash valve is opened for a predetermined time according to the timer signal, and the suction pump and the driving device are operated. The method of claim 2, Further comprising a rim connecting the ends of each of the plurality of ribs, And the plurality of ribs are thinner from the hub and the thickness of the hub in the central axis direction becomes thinner. The method of claim 1, A backwash filtration device in which a sterilizing material inlet for sterilizing material is injected into the body. The method of claim 1, And a position detecting sensor for detecting a position of the suction part. The method of claim 1, The back washing filtration device is installed on the inner side of the body further comprises an ultraviolet light emitting module for irradiating the ultraviolet light into the body. 10. The method of claim 9, A washing arm having one end connected to the driving device; And Further comprising a brush attached to the other end of the washing arm, And the brush washes the surface of the ultraviolet light emitting module when the washing arm is rotated by the driving device. The method of claim 10, A backwash filtration device in which a photocatalyst is coated on the surface of the disc filter.

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