KR20220014667A - A back washing type water purifier, purification system having the same and driving method thereof - Google Patents

Abstract

The present invention relates to a backwash-type filtration device, which comprises: a first pipe in which a fluid inlet through which a fluid flows is formed on one side thereof and a backwash fluid outlet through which a backwashing fluid is discharged is formed on the other side thereof; a second pipe disposed in parallel with the first pipe and having a backwash fluid inlet formed on one side thereof through which the backwash fluid flows is introduced and a fluid outlet on the other side thereof through which the fluid is discharged; at least one filter member installed to communicate between the first pipe and the second pipe and provided to filter the fluid; and a valve member selectively opening and closing the fluid inlet, the fluid outlet, the backwash fluid inlet, and backwash fluid outlet according to the filtration operation of the fluid through the filter member or the backwashing operation of the filter member. The present invention can wash a plurality of filter members at once without loss of flow rate and pressure, thereby reducing the time required for backwashing and increasing backwashing efficiency.

Description

A backwash type filtration device, a filtration system including the same, and a driving method thereof

The present invention relates to a backwash type filtration device, a filtration system including the same, and a driving method thereof, and the backwash type filtration device capable of increasing the filtration efficiency of a fluid and the backwashing efficiency of a filter member with a simple configuration, comprising: It relates to a filtration system comprising a and a driving method thereof.

In general, a ballast tank that can store ballast water is installed in a ship to control the balance and draft of the ship.

In addition, a filtering device capable of filtering foreign substances contained in the water is provided in the inlet area where the water used in the ballast water from the ballast tank flows, and by filtering the water flowing into the ballast tank through the filtering device, the ballast tank When the ballast water inside is drained, foreign substances such as living organisms and organic substances are leaked to the outside, thereby preventing damage to the ecosystem.

A typical filtration device includes a plurality of filter members inside a housing, and when water flows in through an inlet formed in the housing, foreign substances contained in the water are filtered through the filter member and discharged through an outlet of the housing.

In addition, in order to remove foreign substances adhering to the filter member, backwashing of the filter member may be performed. In the backwashing process of the filter member, a backwashing nozzle is connected to the filter member to introduce high-pressure washing water into the filter member. By doing so, the filter member can be washed.

In the case of the conventional backwashing type filtration device, backwashing takes a lot of time as a plurality of filter members are individually backwashed, and the flow rate and pressure are lost in the backwashing process of the filter member, resulting in poor backwashing efficiency. There was a problem, and accordingly, there is a need to develop a backwash type filtration device capable of rapidly washing a plurality of filter members without loss of flow rate and pressure and having improved backwashing efficiency.

Unexamined Patent Publication No. 2017-0050710 (published on: May 11, 2017) "Balast water filtration device"

In the present invention, a backwash type filtration device, a filtration system including the same, and a driving method thereof, specifically, a plurality of filter members can be washed at once without loss of flow rate and pressure, thereby reducing the time required for backwashing and reverse washing An object of the present invention is to provide a backwash type filtration device capable of increasing washing efficiency, and a filtration system capable of selectively performing a filtration operation or a backwash operation by individually controlling a plurality of backwashing type filtration devices.

The technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those of ordinary skill in the art to which the present invention belongs from the description below. will be able

In order to solve the above problems, the present invention provides a first pipe having a fluid inlet through which the fluid flows, and a backwashing fluid outlet through which the backwashing fluid is discharged on the other side, arranged in parallel with the first pipe. A second pipe having a backwash fluid inlet through which the backwashing fluid flows in and a fluid outlet through which the fluid is discharged is formed on one side, and installed to communicate between the first pipe and the second pipe, At least one filter member provided for filtering and a valve member that selectively opens and closes the fluid inlet, fluid outlet, backwash fluid inlet and backwash fluid outlet according to the filtration operation of the fluid through the filter member or the backwashing operation of the filter member A backwash type filtration device is provided.

In addition, the valve member opens the fluid inlet of the first pipe and the fluid outlet of the second pipe during the filtration operation of the fluid through the filter member, and closes the backwash fluid inlet of the second pipe and the backwash fluid outlet of the first pipe and, during backwash operation of the filter member, backwash type filtration in which the backwash fluid inlet of the second pipe and the backwash fluid outlet of the first pipe are opened and the fluid inlet of the first pipe and the fluid outlet of the second pipe are closed provide the device.

In addition, there is provided a backwash type filtration device further comprising a mounting member provided to detachably mount the filter member between the first pipe and the second pipe, wherein the mounting member has a flange coupling structure or a fitting coupling structure. do.

On the other hand, in another aspect of the present invention for solving the above-described problems, in the filtration system for filtering the external fluid flowing in through the first ballast line and discharging it to the second ballast line connected to the ballast tank, At least one filtration device provided to filter the fluid through the filter member, a first fluid line branched from the first ballast line and connected to the filtration device, the filtered fluid discharged through the filtration device flows in, and a second ballast A second fluid line joining the line, one side connected to the second fluid line, the other side connected to the first backwashing line connected to the filtration device, connected to the filtration device, and discharging the fluid backwashing the filter member to the outside Provided is a filtration system comprising a second backwash line and a pump member for introducing a filtered fluid flowing into the second fluid line into a first backwashing line to supply a filtering device during backwashing of the filter member.

On the other hand, in another aspect of the present invention for solving the above-described problems, in the driving method of the filtration system for filtering and discharging the fluid through a plurality of filtration devices, filtering the fluid through the plurality of filtration devices Performing a filtration operation and detecting a pressure difference between the fluid introduced into the plurality of filtration devices and the filtered fluid discharged from the plurality of filtration devices, and when the difference in pressure is greater than or equal to a preset difference value, filtration by the filtration operation It provides a driving method of a filtration system comprising the step of sequentially backwashing a filter member with respect to a plurality of filtration devices using the fluid used therein.

In addition, in the driving method of a filtration system for filtering and discharging a fluid through a plurality of filtration devices, the step of performing a filtration operation for filtering the fluid through the plurality of filtration devices and the fluid introduced and discharged for each filtration device By individually detecting the difference in pressure between the filtered fluids, if there is a filtration device in which the difference in pressure is greater than or equal to a preset difference value, the filter member is backwashed with respect to the filtration device using the fluid filtered by the filtration operation It provides a method of driving a filtration system comprising the step of performing a backwash operation.

In addition, in the driving method of a filtration system for filtering and discharging a fluid through a plurality of filtration devices, performing a filtration operation for filtering the fluid through some of the plurality of filtration devices and introducing a part of the filtration devices Detects the pressure difference between the fluid being filtered and the filtered fluid discharged from some filtration devices, and when the difference in pressure is greater than or equal to a preset difference value, at least one of the filtration devices is switched to another filtration device to increase the fluid filtration capacity A method of driving a filtration system comprising performing a filtration operation while maintaining the filtration operation and performing a backwash operation of backwashing a filter member of a filtration device excluded by conversion using the fluid filtered by the filtration operation do.

A backwash type filtration device according to an embodiment of the present invention may selectively control a plurality of valves provided in a first pipe and a second pipe to perform a filtration operation of a fluid through the filter member, and the filter member During the backwashing operation, a plurality of filter members can be washed at once without loss of flow rate and pressure, thereby reducing the time required for backwashing and increasing backwashing efficiency.

In addition, a plurality of filter members can be selectively detached and used between the first and second pipes through the mounting member, so that the filter member can be replaced and used, and the number of filter members installed can be changed according to the processing capacity of the fluid can

In addition, the filtration system according to an embodiment of the present invention includes a plurality of filtration devices to perform filtration in response to the volume of fluid flowing into the ballast tank, and individually controls the plurality of filtration devices for filtration operation or backwashing. By allowing the operation to be selectively performed, only the filtration operation can be performed, or the filtration operation and the backwash operation can be simultaneously performed while maintaining a constant filtration capacity of the fluid, thereby providing an efficient filtration system.

In addition, in the process of performing a filtration operation of filtering the fluid through a plurality of filtration devices, when backwashing of a specific filtration device is required, some of the filtered fluid is recovered and supplied to the filtration device requiring backwashing to provide a filter member By performing backwashing, there is an advantage in that there is no need for a supply device for separately supplying the backwashing fluid.

The effects obtainable in the present invention are not limited to the above-mentioned effects, and other effects not mentioned may be clearly understood by those of ordinary skill in the art to which the present invention belongs from the following description. will be.

1 is a cross-sectional view showing the configuration of a backwash type filtering device according to an embodiment of the present invention.
2 is an example of a configuration of a mounting member provided in a backwash type filtering device according to an embodiment of the present invention.
3 is a view showing an operating state of a backwash type filtering device according to an embodiment of the present invention.
4 shows the configuration of a filtration system according to an embodiment of the present invention.
5 and 6 are diagrams illustrating an operation control process of a filtration system according to an embodiment of the present invention.

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

DETAILED DESCRIPTION The detailed description set forth below in conjunction with the appended drawings is intended to describe exemplary embodiments of the present invention and is not intended to represent the only embodiments in which the present invention may be practiced.

In order to clearly explain the present invention in the drawings, parts not related to the description may be omitted, and the same reference numerals may be used for the same or similar components throughout the specification.

In an embodiment of the present invention, expressions such as “or” and “at least one” may indicate one of the words listed together, or a combination of two or more.

1 is a cross-sectional view showing the configuration of a backwash type filtering device 100 according to an embodiment of the present invention.

The backwash type filtration device 100 according to the embodiment of the present invention is a device for filtering foreign substances contained in a fluid such as seawater or fresh water supplied to a ballast tank through a plurality of filter members 130 . As a result, foreign substances adhering to the filter member 130 can be effectively removed through backwashing if necessary, thereby improving the filtration efficiency of the filter member 130 .

Referring to FIG. 1 , a backwash type filtration device 100 according to an embodiment of the present invention includes a first pipe 110 , a second pipe 120 , a filter member 130 , and a valve member 140 . may include

The first pipe 110 may have a fluid inlet 111 through which the fluid flows, and a backwash fluid outlet 112 through which the backwashing fluid is discharged on the other side.

The second pipe 120 is disposed parallel to the first pipe 110, and a backwash fluid inlet 121 through which the backwashing fluid flows is formed on one side, and a fluid outlet 122 through which the fluid is discharged on the other side is formed. can be

Here, a fluid to be supplied to a ballast tank may flow into the fluid inlet 111 of the first pipe 110 , and a filter member to be described later as the backwash fluid inlet 121 of the second pipe 120 . Backwashing fluid for backwashing 130 may be introduced.

A plurality of filter members 130 are installed to communicate between the first pipe 110 and the second pipe 120 disposed in parallel, and may be provided to filter the fluid.

As an example, in the present embodiment, the second pipe 120 and the first pipe 110 may be disposed in parallel with a predetermined distance up and down, and between the second pipe 120 and the first pipe 110 . A plurality of filter members 130 may be installed, and each filter member 130 may be provided such that an upper end communicates with the second pipe 120 and a lower end communicates with the first pipe 110 .

Specifically, the filter member 130 may include a hollow filter housing 131 with both sides open, and a filter element 132 provided inside the filter housing 131 to filter the fluid.

Here, the filter element 132 is formed to filter foreign substances including the fluid flowing into the filter housing 131, for example, in a cylindrical shape with a narrow upper end and a wide lower end, with a closed upper end and an open lower end. shape, and the side part is formed in the form of a mesh, so that foreign substances contained in the fluid can be easily filtered.

In addition, the filter housing 131 has a cylindrical shape with an upper end and a lower end open, and a connection portion between the upper end of the filter housing 131 and the second pipe 120 , and the lower end of the filter housing 131 and the first pipe 110 . ) may be provided with a mounting member 150 to which the filter housing 131 can be detachably mounted, respectively.

2 shows an example of the configuration of the mounting member 150 provided in the backwash type filtration device 100 according to an embodiment of the present invention.

As an example, referring to FIG. 2 , the mounting member 150 is at the upper end and lower end of the first flange 151 formed on the first pipe 110 and the second pipe 120 , and the filter housing 131 . It may include a second flange 152 connected to the first flange 151 that is formed and disposed correspondingly, and a fastening member 153 for mutually fastening the first flange 151 and the second flange 152 to each other. have.

Accordingly, the first flange 151 formed in the first pipe 110 and the second pipe 120, respectively, and the second flange 152 formed at the upper end and the lower end of the filter housing 131 is connected correspondingly, The first flange 151 and the second flange 152 connected to each other through a fastening member 153 such as a bolt and a nut are mutually fastened to connect the filter member 130 to the first pipe 110 and the second pipe 120 . ) can be installed between

In addition, when the filter member 130 is replaced, among the plurality of filter members 130 mounted between the first pipe 110 and the second pipe 120 , the first and the The filter member 130 may be separated by releasing the fastening member 153 of the second flange 152 , and a new filter member 130 may be mounted in the above-described manner.

In addition, as another example, the mounting member 150 has a fitting structure in which the filter member 130 is detachably inserted and coupled between the first pipe 110 and the second pipe 120 in addition to the above-described flange coupling structure. may be formed.

In addition, the backwash type filtration device 100 according to the present embodiment can selectively separate or mount the plurality of filter members 130 installed in the first and second pipes 110 and 120 through the mounting member 150 . Thus, the number of the filter members 130 installed may be changed in accordance with the processing capacity of the fluid.

As an example, according to the change in the number of the filter members 130 installed, the first flange 151 from which the filter member 130 is separated from the first and second pipes 110 and 120 has a sealing member (not shown) for sealing. can be combined.

Meanwhile, referring to FIG. 1 , the valve member 140 has a fluid inlet 111 formed in the first pipe 110 according to the filtration operation of the fluid through the filter member 130 or the backwashing operation of the filter member 130 . ) and the backwash fluid outlet 112 , and the backwash fluid inlet 121 and the fluid outlet 122 formed in the second pipe 120 may be selectively opened and closed.

Specifically, the valve member 140 includes a first valve 141 that opens and closes the fluid inlet 111 of the first pipe 110 and a second valve 141 that opens and closes the backwash fluid outlet 112 of the first pipe 110 . The valve 142, the third valve 143 for opening and closing the backwash fluid inlet 121 of the second pipe 120, and the fourth valve 144 for opening and closing the fluid outlet 122 of the second pipe 120 ) may be included.

At this time, during the filtration operation of filtering the fluid through the filter member 130, the first valve 141 and the fourth valve 144 are controlled to open the fluid inlet 111 and the fluid outlet 122, and By controlling the second valve 142 and the third valve 143 , the backwash fluid inlet 121 and the backwash fluid outlet 112 may be closed.

In addition, during the backwash operation for backwashing the filter member 130, the second valve 142 and the third valve 143 are controlled to open the backwash fluid inlet 121 and the backwash fluid outlet 112, , the first valve 141 and the fourth valve 144 may be controlled to close the fluid inlet 111 and the fluid outlet 122 , and a detailed operation process for this will be described below.

3 is a view showing an operation state of the backwash type filtration device 100 according to an embodiment of the present invention.

Referring to FIG. 3A , during the filtration operation of filtering foreign substances contained in fluids such as seawater or fresh water supplied to a ballast tank, the first valve 141 and the fourth valve 144 control to open and close the second valve 142 and the third valve 143 to open the fluid inlet 111 of the first pipe 110 and close the backwash fluid outlet 112, 2 The backwash fluid inlet 121 of the pipe 120 may be closed and the fluid outlet 122 may be opened.

At this time, from the fluid inlet 111 of the first pipe 110 to the fluid outlet 122 of the second pipe 120 through the plurality of filter members 130, a filtration flow path for filtering and discharging the inflow fluid is formed. can

Thereby, the fluid can be introduced through the open fluid inlet 111 of the first pipe 110 , and the fluid introduced into the first pipe 110 is filtered while passing through the plurality of filter members 130 , 2 may be discharged through the open fluid outlet 122 of the pipe 120 .

In addition, referring to FIG. 3B , when backwashing the filter member 130 is performed, the second valve 142 and the third valve 143 are opened and controlled, and the first valve 141 and the second valve 141 are opened. 4 By close control of the valve 144, the fluid inlet 111 of the first pipe 110 can be closed and the backwash fluid outlet 112 can be opened, and the backwash fluid inlet 121 of the second pipe 120 can be closed. may be opened and the fluid outlet 122 may be closed.

At this time, from the backwash fluid inlet 121 of the second pipe 120 to the backwash fluid outlet 112 of the first pipe 110 through the plurality of filter members 130, the backwash fluid flows through the plurality of filter members ( 130) may be backwashed and a backwash flow path discharged may be formed.

Accordingly, the backwashing fluid may be introduced through the open backwashing fluid inlet 121 of the second pipe 120 , and the backwashing fluid flowing into the second pipe 120 may filter the plurality of filter members 130 . After backwashing, it may be discharged through the open backwash fluid outlet 112 of the first pipe 110 .

In this case, the backwashing fluid flowing into the plurality of filter members 130 may remove foreign substances adhering to the filter element 132 and simultaneously wash it.

In this way, the backwash type filtration device 100 according to the present embodiment selectively controls the plurality of valves 141, 142, 143, 144 provided in the first pipe 110 and the second pipe 120, and the filter member ( 130) can perform a filtration operation of the fluid, and during the backwashing operation of the filter member 130, the plurality of filter members 130 can be washed at once without loss of flow rate and pressure, so that the Time can be shortened and backwashing efficiency can be increased.

In addition, the plurality of filter members 130 can be selectively detached and used between the first and second pipes 110 and 120 through the mounting member 150 , so that the filter member 130 can be replaced and used, and the fluid The number of the filter members 130 installed may be changed according to the processing capacity.

In addition, the backwash type filtration device 100 according to the present embodiment has a compact configuration, so that productivity improvement and cost reduction of the filtration device 100 can be achieved, and installation is simple as well as filtration operation and reverse operation. There is an advantage in that it is easy to control the washing operation.

On the other hand, the backwash type filtration device 100 as described above may be configured in a modular type, and a plurality of such modular filtration devices 100 are provided to constitute the filtration system 200 with increased filter capacity. can do.

4 shows the configuration of the filtration system 200 according to an embodiment of the present invention.

The filtration system 200 according to this embodiment is installed on the ballast lines 10 and 20 to filter the fluid supplied to the ballast tank through the ballast lines 10 and 20, and also to the filtration system 200 It is possible to backwash the filter member 130 of the filtering device 100 that requires backwashing among the provided plurality of filtering devices 100 .

Referring to FIG. 4 , the filtration system 200 according to an embodiment of the present invention includes a first fluid line 210 , a second fluid line 220 , a filtration device 100 , and a first backwash line 230 . ), a second backwash line 240 and a pump member 250 may be included.

The first fluid line 210 may be branched from the first ballast line 10 through which an external fluid is introduced, and may be connected to the fluid inlet 111 provided in each of the plurality of filtering devices 100 .

The second fluid line 220 is connected to the fluid outlet 122 provided in each of the plurality of filtration devices 100, and may be connected to join the second ballast line 20 for supplying the filtered fluid to the ballast tank. .

As described above, the filtering device 100 may include a first pipe 110 , a second pipe 120 , a plurality of filter members 130 and a valve member 140 , depending on the filtration capacity of the fluid. It may be provided in plurality.

Here, the first fluid line 210 may be connected to the fluid inlet 111 of the first pipe 110 , and the second fluid line 220 may be connected to the fluid outlet 122 of the second pipe 120 . .

Accordingly, the fluid flowing into the first ballast line 10 to be supplied to the ballast tank may be filtered through the filtering device 100 along the plurality of branched first fluid lines 210, and the filtered fluid may be joined through the second fluid line 220 and introduced into the second ballast line 20 .

The first backwash line 230 may be connected to the backwash fluid inlet 121 provided in each of the plurality of filtration devices 100 to supply backwashing fluid to each filtration device 100 .

The second backwash line 240 is connected to the backwash fluid outlet 112 provided in each of the plurality of filtration devices 100, and a filter member discharged through the backwash fluid outlet 112 of each filtration device 100 ( 130) may be introduced into the backwashing fluid.

In this case, the backwash fluid flowing into the second backwash line 240 may be discharged to an external backwash fluid processing unit (not shown) through the discharge line 260 .

In addition, the first backwash line 230 may be connected to the second fluid line 220 , and a pump member 250 may be provided on the first backwash line 230 .

The pump member 250 first backwashes the filtered fluid discharged from the plurality of filtering devices 100 to the second fluid line 220 during backwashing of the filter member 130 provided in the filtering device 100 . It can be driven to flow into the line 230 .

Accordingly, the filtered fluid may flow into the first backwash line 230 , and the filtered fluid may be supplied to the plurality of filtration devices 100 to be used as a backwash fluid.

In addition, the filtration system 200 according to the present embodiment may further include a first pressure sensor 270, a second pressure sensor 280, and a control unit (not shown).

5 and 6 show an operation control process of the filtration system 200 according to an embodiment of the present invention.

As an example, the operation control process of the filtration system 200 including three filtration devices 101 , 102 , 103 will be described below in detail.

5 and 6, the first pressure sensor 270 detects the pressure of the fluid flowing into the filtering devices 101, 102, 103, and the second pressure sensor 280 of the fluid discharged from the filtering devices 101, 102, 103. pressure can be detected.

As an example, as shown in FIG. 5 , the first pressure sensor 270 is provided at the rear end of the first ballast line 10 , to a plurality of filtering devices 101 , 102 , 103 through the first fluid line 210 . It is possible to detect the pressure of the flowing fluid, and the second pressure sensor 280 is provided at the front end of the second ballast line 20, and is discharged from the plurality of filtering devices 101, 102, 103 through the second fluid line 220. It is possible to detect the fluid pressure.

In addition, as another example, as shown in FIG. 6 , the first pressure sensor 270 is provided in each of the plurality of first fluid lines 210 to detect the pressure of the fluid flowing into the plurality of filtering devices 101 , 102 , 103 . The second pressure sensor 280 may be provided in each of the plurality of second fluid lines 220 to detect the pressure of the fluid discharged from the plurality of filtration devices 101 , 102 , 103 .

A control unit (not shown) may control the operation of the plurality of valves 141, 142, 143, and 144 provided in the plurality of filtering devices 101, 102, 103, thereby controlling the filtering operation and backwashing operation of the filtering devices 101, 102, 103.

At this time, if the difference between the pressure values detected by the first pressure sensor 270 and the second pressure sensor 280 is greater than or equal to a preset difference value, the control unit (not shown) may perform the backwashing operation of the filtering devices 101 , 102 , 103 . have.

The operation control of the filtration system 200 may be performed in various ways.

5 and 6, in the filtration operation process of filtering foreign substances contained in fluid such as seawater or fresh water supplied to a ballast tank through the filtration system 200 in the present embodiment, a plurality of filtration By controlling the plurality of valves 141,142,143,144 provided in the apparatus 101,102,103 to close the backwash fluid inlet 121 and the backwash fluid outlet 112 and open the fluid inlet 111 and the fluid outlet 122, each Filtration that filters and discharges the inflow fluid from the fluid inlet 111 of the first pipe 110 to the fluid outlet 122 of the second pipe 120 through the plurality of filter members 130 to the filtration devices 101, 102, and 103 A flow path may be formed.

Accordingly, the fluid flowing in through the first ballast line 10 flows into the fluid inlets 111 of the plurality of filtration devices 101, 102, 103 through the plurality of branched first fluid lines 210, and the introduced fluid is It may be filtered while passing through the filter member 130 and discharged through the fluid outlet 122 .

In addition, the filtered fluid may be supplied to a ballast tank by being joined through the second fluid line 220 and discharged to the second ballast line 20 .

On the other hand, during the backwash operation of backwashing the filter member 130 provided in the plurality of filtration devices 101, 102, 103, selectively backwashing all the filtration devices 101, 102, 103 or to the filtration device requiring backwashing Backwashing can only be performed on

5, when the first pressure sensor 270 and the second pressure sensor 280 are provided at the rear end of the first ballast line 10 and the front end of the second ballast line 20, respectively, the first pressure If the difference between the pressure values detected by the sensor 270 and the second pressure sensor 280 is equal to or greater than a preset difference value, the filter member 130 of the first to third filtering devices 101 , 102 , 103 may be backwashed.

At this time, when the first to third filtering devices 101, 102, and 103 are operated to backwash as a whole, the first to third filtering devices 101, 102, and 103 may be sequentially backwashed.

First, by controlling the plurality of valves 141,142,143,144 provided in the first filtering device 101, the fluid inlet 111 and the fluid outlet 122 are closed, and the backwash fluid inlet 121 and the backwash fluid outlet 112 are closed. by opening the first filtration device 101 from the backwash fluid inlet 121 of the second pipe 120 to the backwash fluid outlet 112 of the first pipe 110 through the plurality of filter members 130, A backwash flow path through which the backwashing fluid is discharged after backwashing the plurality of filter members 130 may be formed.

In addition, by operating the pump member 250 provided in the first backwash line 230 , the filtered fluid discharged from the second and third filtering devices 102 and 103 to the second fluid line 220 is transferred to the first backwashing line 220 . It can be introduced into the washing line 230 and used as a backwashing fluid, and the backwashing fluid is introduced into the backwashing fluid inlet 121 of the first filtration device 101 to wash the plurality of filter members 130 along the backwashing passage. After backwashing, the backwash fluid may be discharged to the second backwash line 240 through the outlet 112 .

At this time, this backwash operation may be performed for a certain period of time, and when the backwashing of the filter member 130 of the first filtration device 101 is completed, the backwash fluid inlet 121 and the backwash fluid outlet 112 are closed and , the fluid inlet 111 and the fluid outlet 122 may be opened, and then the filter member 130 of the second filtration device 102 may be backwashed for a certain period of time in the same manner as described above, Subsequently, the filter member 130 of the third filtering device 103 may be backwashed for a predetermined time.

In addition, when backwashing of the filter member 130 of the first to third filtering devices 101 , 102 , 103 is completed, the operation of the pump member 250 may be stopped.

On the other hand, the filtration system 200 of this embodiment maintains a constant fluid filtration capacity and can perform a filtration operation and a backwash operation at the same time. Basically, the filtration operation is performed through two filtration devices, but when backwashing is required , while switching between the three filtration devices, two filtration devices may perform a filtration operation, and one filtration device may perform a backwash operation.

As an example, in the process of performing a filtration operation through the first filtration device 101 and the second filtration device 102 , the pressure value detected by the first pressure sensor 270 and the second pressure sensor 280 . If the difference of is greater than or equal to a preset difference value, one of the first filtering device 101 and the second filtering device 102 is switched to a backwash operation, and the filtration operation can be performed through the third filtering device 103 . have.

At this time, when backwashing is performed on the first filtering device 101, the second filtering device 102 and the third filtering device 103 may perform a filtering operation, and even in this case, the first pressure sensor 270 ) and the pressure value detected by the second pressure sensor 280 is greater than or equal to a preset difference value, the first filtering device 101 is switched to the filtration operation, and the first and third filtering devices 101 and 103 are A filtration operation may be performed through the filtration operation, and backwashing may be performed on the second filtration device 102 .

In addition, if the difference between the pressure values detected by the first pressure sensor 270 and the second pressure sensor 280 is greater than or equal to the preset difference value, the second filtering device 102 is switched to the filtering operation, and the first And a filtration operation may be performed through the second filtration devices 101 and 102 , and backwashing may be performed on the third filtration device 103 .

Meanwhile, referring to FIG. 6 , a first pressure sensor 270 and a plurality of first fluid lines 210 and a plurality of second fluid lines 220 connected to the first to third filtration devices 101 , 102 , 103 respectively. When the second pressure sensor 280 is provided, backwashing can be performed only on the filtering device requiring backwashing through the first and second pressure sensors 270 and 280 .

As an example, while performing a filtration operation of the fluid through the first to third filtering devices 101, 102, 103, the first pressure sensor 270 and the second pressure sensor 280 provided on the first filtering device 101 side. If the difference between the pressure values detected by the ) is opened, and the pump member 250 provided in the first backwash line 230 is operated to backwash the filter member 130 of the first filtration device 101 .

In addition, the operation of the pump member 250 is stopped after a predetermined period of time to complete backwashing of the filter member 130 of the first filtering device 101 .

On the other hand, in this embodiment as well, the filtration operation and the backwash operation can be simultaneously performed while maintaining the fluid filtration capacity constant. Basically, the filtration operation is performed through two filtration devices, but as described above, the first filtration device ( 101), the filtration operation may be performed through the second and third filtration devices 102 and 103 .

As such, the filtration system 200 according to the embodiment of the present invention includes a plurality of filtration devices 101, 102, 103 to perform filtration in response to the capacity of the fluid flowing into the ballast tank, and a plurality of filtration devices 101, 102, 103 ) by individually controlling the filtration operation or backwashing operation to be selectively performed, only the filtration operation can be performed, or the filtration operation and the backwash operation can be performed simultaneously while maintaining a constant filtration capacity of the fluid, resulting in efficient filtration A system 200 may be provided.

In addition, in the process of performing a filtration operation of filtering the fluid through the plurality of filtration devices 101, 102, 103, when backwashing of a specific filtration device is required, some of the filtered fluid is recovered and supplied to the filtration device requiring backwashing In this way, backwashing of the filter member 130 is performed, so there is an advantage in that there is no need for a supply device for separately supplying the backwashing fluid.

The embodiments of the present invention disclosed in the present specification and drawings are merely provided for specific examples in order to easily explain the technical contents of the present invention and help the understanding of the present invention, and are not intended to limit the scope of the present invention.

Therefore, the scope of the present invention should be construed as including all changes or modifications derived based on the technical spirit of the present invention in addition to the embodiments disclosed herein are included in the scope of the present invention.

100, 101, 102, 103: Backwash type filtration device
110: first pipe 120: second pipe
130: filter member 140: valve member
150: mounting member 200: filtration system
210: first fluid line 220: second fluid line
230: first backwash line 240: second backwash line
250: pump member 260: discharge line
270: first pressure sensor 280: second pressure sensor

Claims (9)

a first pipe having a fluid inlet through which the fluid flows, and a backwashing fluid outlet through which the backwashing fluid is discharged on the other side;
a second pipe disposed parallel to the first pipe, the backwash fluid inlet through which the backwashing fluid flows, and a fluid outlet through which the fluid is discharged at the other side;
at least one filter member installed to communicate between the first pipe and the second pipe and provided to filter the fluid; and
A backwash type filtration device including a valve member that selectively opens and closes the fluid inlet, fluid outlet, backwash fluid inlet and backwash fluid outlet according to the filtration operation of the fluid through the filter member or the backwashing operation of the filter member .
The method of claim 1,
The valve member,
During the filtration operation of the fluid through the filter member, the fluid inlet of the first pipe and the fluid outlet of the second pipe are opened, and the backwash fluid inlet of the second pipe and the backwash fluid outlet of the first pipe are closed. ,
Backwashing in which the backwash fluid inlet of the second pipe and the backwash fluid outlet of the first pipe are opened and the fluid inlet of the first pipe and the fluid outlet of the second pipe are closed during backwashing of the filter member type of filter.
The method of claim 1,
Further comprising a mounting member provided to detachably mount the filter member between the first pipe and the second pipe,
The mounting member is a backwash type filtration device formed of a flange coupling structure or a fitting coupling structure.
In the filtration system that filters the external fluid flowing in through the first ballast line and discharges it to the second ballast line connected to the ballast tank,
at least one filtering device provided to filter the fluid through the filter member;
a first fluid line branched from the first ballast line and connected to the filtering device;
a second fluid line through which the filtered fluid discharged through the filtering device is introduced and joined to the second ballast line;
a first backwash line having one end connected to the second fluid line and the other end connected to the filtering device;
a second backwash line connected to the filtering device and discharging the fluid backwashing the filter member to the outside; and
and a pump member flowing into the first backwash line to supply the filtered fluid flowing into the second fluid line to the filtering device during backwashing of the filter member.
5. The method of claim 4,
a first pressure sensor for detecting the pressure of the fluid flowing into the filtering device;
a second pressure sensor for detecting the pressure of the filtered fluid discharged from the filtering device; and
The filtration system further comprising a control unit for controlling to perform a backwash operation of the filtering device when the difference between the pressure values detected by the first pressure sensor and the second pressure sensor is equal to or greater than a preset difference value.
6. The method of claim 5,
The filtering device is provided in plurality,
The first pressure sensor and the second pressure sensor are respectively provided in the plurality of filtering devices,
The control unit controls the filter system to selectively perform a backwash operation on a filter device in which a difference in a detected pressure value is greater than or equal to a preset difference value among the plurality of filtering devices.
In the driving method of a filtration system for filtering and discharging a fluid through a plurality of filtration devices,
performing a filtration operation of filtering the fluid through the plurality of filtration devices; and
By detecting a pressure difference between the fluid flowing into the plurality of filtering devices and the filtered fluid discharged from the plurality of filtering devices, when the pressure difference is greater than or equal to a preset difference value,
and performing an operation of sequentially backwashing the filter member with respect to the plurality of filtration devices using the fluid filtered by the filtration operation.
In the driving method of a filtration system for filtering and discharging a fluid through a plurality of filtration devices,
performing a filtration operation of filtering the fluid through the plurality of filtration devices; and
For each filtering device, the difference in pressure between the incoming fluid and the discharged filtered fluid is individually detected, and when there is a filtering device in which the difference in pressure is greater than or equal to a preset difference value,
and performing a backwash operation of backwashing the filter member with respect to the filtration device using the fluid filtered by the filtration operation.
In the driving method of a filtration system for filtering and discharging a fluid through a plurality of filtration devices,
performing a filtration operation of filtering the fluid through some of the plurality of filtration devices; and
By detecting a pressure difference between the fluid flowing into the partial filtering device and the filtered fluid discharged from the partial filtering device, when the pressure difference is greater than or equal to a preset difference value,
The filtering operation is performed while maintaining the fluid filtration capacity by switching at least one of the partial filtering devices to another filtering device, and the filter member of the filtering device excluded by the conversion using the fluid filtered by the filtering operation A method of driving a filtration system comprising the step of performing a backwash operation of backwashing the

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