KR20210058124A - Filter apparatus with back-washing function - Google Patents

Abstract

The present invention relates to a filter apparatus with a backwashing function and, more specifically, to a filter apparatus with a backwashing function to remove foreign substances by backwashing a filter of an apparatus for filtering incoming seawater. According to the present invention, the filter apparatus comprises: an upper housing having a driving unit disposed on one side to apply a rotational force; a middle housing connected to the lower end of the upper housing and provided with an outlet through which inflow water is discharged; a lower housing connected to the lower end of the middle housing and provided with an inlet through which water is introduced; a drum filter formed in the middle housing in a drum shape with upper and lower surfaces open and generating a filtration effect when the inflow water moves from the inner circumferential surface thereof to the outer circumferential surface; and a washing unit disposed inside the drum filter and connected to the driving unit to wash the inner circumferential surface of the drum filter while rotating.

Description

Filter apparatus with back-washing function

The present invention relates to a filter device having a backwashing function, and more particularly, to a filter device having a backwashing function capable of removing foreign substances by backwashing a filter of a device for filtering incoming seawater.

In general, when cargo is loaded on a ship, the balance of the ship's front and rear or left and right may not be correct. To this end, a ballast tank is provided inside the ship, and ballast water is introduced or discharged into the ballast tank, thereby solving the problem of ship imbalance due to cargo loading.

On the other hand, as the volume of international trade gradually increases and the cost of maritime transportation increases, the size of the ship is rapidly increasing, and accordingly, the amount of ballast water used by the ship is also greatly increasing.

As the amount of ballast water used by ships increases, cases of damage to indigenous marine ecosystems caused by foreign marine species are also increasing. The International Convention for the Control and Management of Ship's Ballast water and Sediments was adopted in 2004. This Convention is entered into force one year after the date when more than 30 countries have joined, and the fleet volume of the member states becomes more than 35% of the world fleet. In accordance with this Convention, ships must install a ballast water management system (BWMS) to manage ballast water to prevent damage such as disturbance of the ecosystem and the spread of harmful pathogens caused by ballast water.

On the other hand, the ballast water treatment device installed on the ship is mainly used as a physical or chemical treatment method such as electrolysis or ultraviolet treatment after passing through a filtration method using a filter. No. 0031295 discloses a conventional filter device. In the case of a conventional filter device, backwashing is possible in order to automatically remove foreign substances and the like attached to the filter during use.

That is, when the filter device is in a general filtration operation, the ballast water flows into the influent line, passes through the filter element installed inside the housing, and then flows out through the treated water line. At this time, when a filter is clogged due to a large amount of foreign substances in the filters constituting the filter element, the filter device automatically detects the clogging of the filter and starts a backwash operation. That is, during the backwash operation, the ballast water moves from the treated water line to the backwash line to remove foreign substances stuck in the filter. Therefore, it is possible to continuously treat ballast water through the above backwash operation.

In addition, since the individual filters applied to the conventional filter device are formed in a single tube shape, and the length is long, installation work is not easy.

In addition, in the conventional filter device, individual filters are separately applied, so that the configuration of the device is complicated, and there is a problem in that economic efficiency is reduced.

Therefore, it is necessary to develop a filter device that has a simple configuration and is easy to replace a filter, and has a high price competitiveness because the configuration is simple, and can effectively perform backwashing to effectively filter influent water.

Republic of Korea Patent Publication No. 10-2011-0031295

An object of the present invention is a filter device for filtering seawater flowing into a ballast tank, a filter device having a backwashing function having a high backwashing efficiency capable of efficiently removing foreign substances loaded on the inner circumferential surface of the filter while having a simple configuration. To provide.

The problems to be solved by the present invention are not limited to the problems mentioned above, and other problems to be solved by the present invention not mentioned here are those of ordinary skill in the technical field to which the present invention belongs from the following description. Will be clearly understood.

A filter device having a backwashing function according to an embodiment of the present invention for solving the above problem includes an upper housing provided at one side of a driving unit for applying a rotational force, and connected at the lower end of the upper housing, and introduced water As a filter formed in a drum-shaped upper and lower surfaces in the middle housing, the middle housing is provided with the discharge port, the lower housing is connected at the lower end of the middle housing, and the inlet port through which water is introduced, and the upper and lower surfaces thereof are opened. A drum filter that generates a filtration effect when water moves from an inner circumferential surface to an outer circumferential surface, and a washing unit disposed inside the drum filter and connected to the driving unit to clean the inner circumferential surface of the drum filter while rotating.

Preferably, the washing unit is characterized in that the washing operation is performed when the pressure difference between the inside and the outside of the drum filter exceeds a preset value.

Preferably, the cleaning unit is a tube having a length along the central axis of the drum filter, a first suction pipe connected to the driving unit to be rotatably provided, and a rectangular panel shape with both sides open, and one side thereof is the In the form of a bar connected to the suction panel and the other side of the suction panel in communication with the first suction pipe and an empty inside, a suction bar having one end fixedly in communication with the suction panel and the other end contacting the drum filter are opened. Includes.

Preferably, a plurality of support shafts for fixing the suction bar are provided inside the suction panel, and an elastic part is further provided on the support shaft to provide elasticity perpendicular to the inner circumferential surface of the drum filter to which the suction bar abuts. .

Preferably, the suction panel and the suction bar rotate integrally with the first suction pipe, and suction foreign substances on the inner circumferential surface of the drum filter through a suction port formed on the other end of the suction bar.

The filter device having a backwashing function according to the present invention has a backwashing function capable of efficiently removing foreign substances loaded on the inner circumference of the filter while being simple in configuration through the upper, middle, and lower housings, drum filter, and washing filter. It is to provide a equipped filter device.

1 schematically shows a cross-sectional view according to an embodiment of a filter device having a backwash function according to the present invention.
2 is a perspective view showing a drum filter according to an embodiment of a filter device having a backwash function according to the present invention.
3 is a side cross-sectional view showing the configuration of a washing unit according to an embodiment of a filter device having a backwashing function according to the present invention.
4 is a side view showing a washing unit in accordance with an embodiment of a filter device having a backwashing function according to the present invention, in which the suction port is visible.
5 is a cross-sectional plan view of a filter device having a backwashing function according to an embodiment of the present invention as viewed from the top of the washing unit.
6 is a front cross-sectional view of a lower housing according to an embodiment of a filter device having a backwash function according to the present invention.
7 is a diagram illustrating foreign matter on an inner circumferential surface of a washing unit and a drum filter according to an embodiment of a filter device having a backwashing function according to the present invention.
FIG. 8 shows that foreign matters on the inner circumferential surface of the drum filter are sucked and removed due to the washing operation of the washing unit according to an embodiment of the filter device having a backwash function according to the present invention.

Specific matters, including the problems to be solved, means for solving the problems, and effects of the present invention as described above, are included in the following examples and drawings. Advantages and features of the present invention, and a method of achieving them will become apparent with reference to the embodiments described below in detail together with the accompanying drawings.

A filter device having a backwashing function according to the present invention includes an upper housing 1 provided on one side of a driving unit 6 for applying a rotational force, as shown in FIGS. 1 to 8, and the upper housing 1 ) Connected at the bottom of the suspension housing (2) provided with an outlet (5) through which the inflowed water is discharged, and connected from the bottom of the suspension housing (2), and an inlet (4) through which water flows in. A drum filter (7) and the drum filter (7) that generate a filtration effect when the inflowed water moves from the inner circumferential surface to the outer circumferential surface as a filter formed in a drum-shaped upper and lower surfaces in the lower housing (3) and the middle housing (2). (7) It is disposed inside, it is connected to the driving unit 6 may include a washing unit 8 for washing the inner circumferential surface of the drum filter 7 while rotating.

The filter device having a backwash function according to the present invention is a filter device that can be utilized when the seawater filled in the ballast tank of the ship, that is, the ballast water of the ship, is introduced or discharged, and is a foreign matter contained in the seawater (A ) And the inflow of marine organisms, and the purpose of preventing the destruction of the marine environment by foreign marine organisms and foreign substances (A) is given priority.

In general, when cargo is loaded on a ship, the balance between the front and rear or left and right of the ship may be out of alignment. To this end, a ballast tank is provided inside the ship, and by inflow or outflow of ballast water into the ballast tank, the problem of ship imbalance due to cargo loading is solved.

As the amount of ballast water used by ships increases, cases of damage to indigenous marine ecosystems caused by foreign marine species are also increasing. A filter device has been developed, and a filter for filtering seawater has limitations in use due to foreign matter (A) and marine organisms. The purpose of this is to extend the lifespan of the filter and increase the filtration efficiency by backwashing the filter.

First, as shown in FIG. 1, the upper housing 1 may be configured with a driving unit 6 for applying a rotational force provided on one side thereof.

The upper housing 1 is a flange-coupled assembly at the upper end of the middle housing 2, and the driving unit 6 including a motor and a speed reducer providing power may be provided at the upper end.

In a preferred embodiment, the driving unit 6 may be configured to be disposed on the upper end of the upper housing 1.

In detail, the driving unit 6 may be coupled to the following driving shaft coupling unit 87 provided in the washing unit 8 to apply a rotational force.

The driving unit 6 enables the cleaning unit 8 to rotate and at the same time cleans the entire inner circumferential surface of the drum filter 7.

Next, as shown in FIG. 1, the middle housing 2 is connected at the lower end of the upper housing 1, and an outlet 5 through which the introduced water is discharged may be provided.

The outlet (5) is provided as an outlet through which water introduced from the inlet (4) of the lower housing (3) is filtered through the drum filter (7) in the middle housing (2) by inlet pressure and then exits. do.

That is, the water exiting through the discharge port 5 is water filtered through the drum filter 7, and various foreign matters (A) and marine organisms are removed to fill the ballast tank of the ship.

Next, as shown in FIGS. 1 and 6, the lower housing 3 is connected at the lower end of the middle housing 2, and an inlet 4 through which water is introduced may be provided.

That is, the upper housing (1), the middle housing (2), and the lower housing (3) are connected to each other by a flange to serve as a filter device, and to the inlet (4) of the lower housing (3). The introduced water is discharged through the outlet 5 of the suspension housing 2 and is filtered through the drum filter 7 provided in the suspension housing 2 in the process.

At this time, foreign matters (A), marine organisms, etc. contained in the water are loaded on the inner circumferential surface of the drum filter 7, thereby reducing the filtration speed.

The washing unit 8 operates to backwash the inner circumferential surface of the drum filter 7, and the foreign matter A loaded on the inner circumferential surface of the drum filter 7 is sucked and discharged through a suction method. It will be able to maintain its function.

Next, as shown in Figs. 1 to 2, the drum filter 7 is a filter formed in a drum shape with open tops and bottoms in the middle housing 2, when the introduced water moves from the inner circumferential surface to the outer circumferential surface. It can cause filtration effect.

Preferably, the drum filter 7 must be compressed up and down at a predetermined interval by the upper housing 1 so that the introduced water must pass through the drum filter 7 and be discharged to the outlet 5.

In another embodiment, a filter groove for partially receiving the upper and lower portions of the drum filter 7 is further provided in the upper and lower housings 1 and 2 where the upper and lower portions of the drum filter 7 abut. Can be. This is a configuration provided to remove a gap through which water may flow without passing through the drum filter 7 between the inlet 4 and the outlet 5, and a space that may occur in the upper and lower portions of the drum filter 7 Will disappear.

Next, as shown in Figs. 1 and 3 to 5, the washing unit 8 is disposed inside the drum filter 7 and connected to the driving unit 6 to rotate the drum filter 7 at the same time. ) The inner circumferential surface can be washed.

In addition, the washing unit 8 may perform a washing operation when the pressure difference between the inside and the outside of the drum filter 7 is greater than or equal to a preset value.

Preferably, as described above, the washing operation may be performed automatically when the pressure difference between the inside and outside of the drum filter 7 of the drum filter 7 exceeds a preset value.

That is, if the pressure difference exceeds a preset standard without any other manipulation by the user, the filter is automatically cleaned, so that convenience in use is increased.

Therefore, it is preferable that a pressure sensing means is further provided based on the inner and outer circumferential surfaces of the drum filter 7.

In addition, specifically, the cleaning unit 8 may include a first suction pipe 81, a suction panel 82, and a suction bar 83.

The first suction pipe 81 is a pipe having a length along a central axis of the drum filter 7 and may be provided rotatably connected to the driving unit 6.

In addition, the suction panel 82 has a rectangular panel shape with both sides open, and one side thereof communicates with the first suction pipe 81, and the inside is empty.

In addition, the suction bar 83 is in the form of a bar coupled to the other side of the suction panel 82, one end fixedly in communication with the suction panel 82 and the other end contacting the drum filter (7) is open. It can be configured in a form that has been made.

Specifically, a plurality of support shafts 85 for fixing the suction bar 83 are provided inside the suction panel 82, and the drum filter ( 7) An elastic portion 86 that provides elasticity perpendicular to the inner circumferential surface may be further provided.

In addition, the suction panel 82 and the suction bar 83 rotate integrally with the first suction pipe 81, and the drum through a suction port 84 formed on the other end of the suction bar 83 Foreign matter (A) on the inner circumferential surface of the filter 7 can be sucked.

At this time, it is preferable that the suction bar 83 comes into contact with the drum filter 7 and the suction port 84 is completely in close contact with the inner circumferential surface of the drum filter 7.

However, there is a concern that the drum filter 7 may be damaged as the suction port 84 comes into close contact with the drum filter 7. In order to prepare for this, the elastic part 86 is further provided on the support shaft 85 to which the suction panel 82 and the suction bar 83 are coupled to the washing part 8.

The elastic part 86 is provided to prevent damage to the drum filter 7, and the suction port 84 provided in the suction bar 83 is smoothly formed according to the bend of the drum filter 7. It plays the role of making it close together. That is, since the suction bar 83 fixed to the support shaft 85 can have an elastic force according to the bending by the elastic portion 86, damage to the drum filter 7 can be prevented.

Meanwhile, the lower housing 3 may further include a second suction pipe 9 and a suction pump (not shown).

The second suction pipe 9 communicates with the first suction pipe 81 from the inside, and may extend through the outer peripheral surface of the lower housing 3.

The suction pump (not shown) is connected to the second suction pipe 9 to pump foreign substances A in the pipe to the outside.

Foreign matter (A) escapes through the foreign matter outlet (10) provided at the end of the second suction pipe (9).

That is, a negative pressure is generated in the first suction pipe 81 and the second suction pipe 9 due to the suction pump (not shown), and a foreign substance A is sucked through the suction port 84 Will be discharged to the outside.

In addition, a drive shaft coupling portion 87 and a pipe coupling portion 88 may be further provided in the washing portion 8.

The drive shaft coupling part 87 is connected to the drive part 6 by a connecting ring provided at the upper end of the first suction pipe 81.

Specifically, the drive shaft coupling part 87 may be connected to the drive part 6 in various ways such as force fitting and screw coupling.

That is, the entire washing unit 8 rotates about the first suction pipe 81 by the drive shaft coupling unit 87, and the entire inner circumferential surface of the drum filter 7 can be cleaned.

Next, the pipe coupling part 88 is configured to connect the first suction pipe 81 and the second suction pipe 9, and the first suction pipe 81 and the second suction pipe 9 ) May be provided with a connector having a smaller diameter.

Preferably, a bearing is provided on the outer circumferential surface of the pipe coupling part 88 to prevent damage due to friction when the first suction pipe 81 rotates.

As described above, as shown in Figs. 7 to 8, a preferred application example of the filter device having a backwash function according to the present invention is as follows.

First, seawater flows in through the inlet 4 provided in the lower housing 3 and moves to the middle housing 2.

And the seawater is filtered through the drum filter 7 and is discharged through the outlet 5. At this time, the drum filter 7 is formed in a cylindrical shape with open top and bottom, and pressure sensing means for sensing pressure are provided inside and outside the drum filter 7, respectively.

If the difference between the internal pressure and the external pressure of the drum filter 7 exceeds a preset value, the washing unit 8 operates to clean the inner circumferential surface of the drum filter 7.

Due to the operation of the suction pump (not shown), the second suction pipe 9, the first suction pipe 81, the suction panel, and the suction bar 83 in this order become negative pressure, and the inner circumferential surface of the drum filter 7 The suction port 84 abutting on starts suction.

At the same time, power is transmitted to the drive shaft coupling unit 87 connected to the drive unit 6 due to the operation of the drive unit 6, and the entire washing unit 8 is centered on the first suction pipe 81. It will rotate.

At this time, since the suction bar 83 has elasticity perpendicular to the inner circumferential surface of the drum filter 7 by the elastic portion 86 provided on the support shaft 85, damage to the drum filter 7 is prevented. It is minimized, and foreign matter A and marine organisms loaded on the inner circumferential surface of the drum filter 7 can be sucked along the curve.

The suctioned foreign matter (A) passes through the suction bar 83, the suction panel 82, and the first suction pipe 81 of the washing unit 8, and the second suction pipe 9 of the lower housing 3 ) Passes through and exits through the foreign matter exit (10).

Through the above process, the pollutant source disappears from the inner circumferential surface of the drum filter 7 and the filter can function as a filter again.

In addition, the above process may be repeated several times according to a predetermined life and conditions of the drum filter 7.

As described above, it will be appreciated that the above-described technical configuration of the present invention can be implemented in other specific forms without changing the technical spirit or essential features of the present invention by those skilled in the art.

Therefore, the above-described embodiments are to be understood as illustrative and non-limiting in all respects, and the scope of the present invention is indicated by the claims to be described later rather than the detailed description, and the meaning and scope of the claims and the All changes or modifications derived from the equivalent concept should be construed as being included in the scope of the present invention.

A: Foreign matter
1: upper housing
2: Suspended housing
3: lower housing
4: inlet
5: outlet
6: drive unit
7: drum filter
8: washing unit
81: first suction pipe
82: suction panel
83: suction bar
84: inlet
85: support shaft
86: elastic part
87: drive shaft coupling part
88: pipe joint
9: 2nd suction pipe
10: Foreign matter exit

Claims (5)

An upper housing provided on one side of the driving unit for applying the rotational force;
A middle housing connected at a lower end of the upper housing and provided with an outlet through which the introduced water is discharged;
A lower housing connected at the lower end of the middle housing and provided with an inlet through which water flows;
A filter formed in a drum shape with open upper and lower surfaces in the middle housing, the drum filter generating a filtration effect when the introduced water moves from an inner circumferential surface to an outer circumferential surface; And
And a washing unit disposed inside the drum filter and connected to the driving unit to clean the inner circumferential surface of the drum filter at the same time as it rotates. The method of claim 1,
The washing unit is a filter device having a backwashing function, characterized in that to perform a washing operation when the pressure difference between the inside and the outside of the drum filter exceeds a preset value. The method of claim 1,
The washing unit,
A first suction pipe having a length formed along a central axis of the drum filter, the first suction pipe connected to the driving unit to be rotatably provided;
A suction panel in which both sides are opened in the shape of a rectangular panel, and one side thereof communicates with the first suction pipe and has an empty inside; And
And a suction bar coupled to the other side of the suction panel, the suction bar having one end fixedly communicated with the suction panel and the other end contacting the drum filter open. Filter device. The method of claim 3,
A backwashing function, characterized in that a plurality of support shafts for fixing the suction bar are provided inside the suction panel, and an elastic part is further provided on the support shaft to provide elasticity perpendicular to the inner circumferential surface of the drum filter to which the suction bar abuts. Filter device equipped. The method of claim 4,
The suction panel and the suction bar rotate integrally with the first suction pipe,
A filter device with a backwashing function, characterized in that the foreign matter on the inner circumferential surface of the drum filter is sucked through a suction port formed on the other end of the suction bar.

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