WO2021225207A1

WO2021225207A1 - Concentrating apparatus and method

Info

Publication number: WO2021225207A1
Application number: PCT/KR2020/006672
Authority: WO
Inventors: 박석원; 김성태; 권경안; 이광호
Original assignee: (주) 테크로스
Priority date: 2020-05-06
Filing date: 2020-05-22
Publication date: 2021-11-11
Also published as: KR102360205B1; KR20210135743A

Abstract

The present invention relates to a concentrating apparatus, comprising: a housing that has a sample water inlet pipe and a sample water outlet pipe to introduce and discharge sample water; a mesh part that is installed inside the housing and filters out aquatic organisms included in the sample water introduced from the sample water inlet pipe and discharged through the sample water outlet pipe; a motor that has a rotary shaft in the horizontal direction, the rotating shaft being connected to the mesh part to rotate the mesh part; an air inlet pipe that is provided in the housing on an upper portion of the mesh part, and an air discharge pipe that is provided in the housing on a lower portion of the mesh part; and a control unit that controls the motor so that the mesh part rotates 180 degrees when a predetermined condition is satisfied.

Description

Concentrator and method

The present invention relates to a concentrating apparatus and method, and more particularly, to a concentrating apparatus and method for automatically concentrating aquatic organisms included in sample water to an accurate capacity.

In general, ballast water or ballast water is stored in the ballast tank installed on the ship so that the ship can maintain balance when the ship is operated in a state where cargo is unloaded from the ship or the amount of cargo loaded on the ship is very small. It means filling seawater.

Since various kinds of aquatic organisms inhabit this ballast water, if it is discharged from other areas without any treatment, there is a high risk of causing serious marine pollution and destruction of the ecosystem.

Accordingly, the International Maritime Organization (IMO) concluded an international agreement to have the equipment necessary for the sterilization and purification of ballast water be mounted on the ship.

Since the ballast water treatment system mounted on a ship must go through an onshore test and onboard test in accordance with the standards of the International Maritime Organization (IMO) and receive a certificate before operation, the ballast water treated by the ballast water treatment system must be operated by the International Maritime Organization. A system to monitor whether the emission standards specified in the

However, in order to monitor the concentration of living organisms contained in the treated ballast water, a sample concentration operation is required. Conventionally, the concentration operation was performed manually. There was a problem that it took a lot of time to do it.

In addition, there was a problem in that it was difficult to completely shake off the aquatic organisms caught in the mesh during concentration.

In order to backwash the aquatic organisms trapped in the mesh, the aquatic organisms may be removed by flowing backwashing water in the reverse direction. It is difficult to precisely control the amount, and there is a problem in that it cannot be concentrated in a small volume.

The present invention has been devised to solve the above problems, and in particular, it is an object of the present invention to provide a concentrating apparatus and method for rapidly, accurately and automatically concentrating aquatic organisms.

A concentrator according to one aspect of the present invention devised to achieve the above object includes: a housing provided with a sample water inlet pipe and a sample water outlet pipe to receive and discharge sample water; a mesh unit installed inside the housing and filtering out aquatic organisms included in the sample water flowing in from the sample water inlet pipe and discharged through the sample water outlet pipe; a motor having a rotating shaft in the transverse direction, the rotating shaft being connected to the mesh unit to rotate the mesh unit; an air inlet pipe provided in the housing above the mesh unit, and an air discharge pipe provided in the housing below the mesh unit; and a controller for controlling the motor so that the mesh unit rotates 180 degrees when a predetermined condition is satisfied.

In an embodiment of the present invention, the mesh portion may have a substantially downward convex hemispherical shape.

Also, the mesh unit may include a mesh having eyes of a predetermined size, and a frame to which at least a portion of the mesh is coupled to maintain the shape of the mesh.

In one embodiment of the present invention, a flow meter is installed in the sample water inlet pipe, and the controller may control the mesh unit to rotate when the inflow sample water flow rate measured by the flow meter is greater than the target flow rate.

In an embodiment of the present invention, the installation height of the sample water discharge pipe may be calculated based on a value obtained by dividing the concentration flow rate by the cross-sectional area of the housing.

In addition, the installation height of the air discharge pipe may be between the sample water discharge pipe and the mesh unit.

In the concentrating apparatus according to an embodiment of the present invention, a check valve may be installed in the air exhaust pipe.

In one embodiment of the present invention, the motor may be a step motor.

Further, in an embodiment of the present invention, a sample water inlet valve and a sample water outlet valve are installed in the sample water inlet pipe and the sample water outlet pipe, respectively, and an air inlet valve is installed in the air inlet pipe, and the control unit is the sample water inlet It may be configured to open and close the valve, the sample water discharge valve, and the air inlet valve.

On the other hand, the concentration method according to another aspect of the present invention uses the concentrating apparatus according to the above-described aspect of the present invention, (a) a sample water inlet valve and opening the sample water discharge valve; (b) measuring the flow rate flowing into the sample water inlet pipe; (c) closing the sample water inlet valve and the sample water outlet valve when the target flow rate is introduced; (d) operating the motor to rotate the mesh portion 180 degrees; (e) opening the air inlet valve to inject air into the housing; and (f) closing the air inlet valve after a predetermined time.

According to the present invention, the mesh part is rotated with a motor and air is injected through the air inlet pipe so that the sample caught in the mesh part (for example, aquatic life) is released, so that the sample can be concentrated more quickly without clogging the mesh part do.

In addition, according to the present invention, there is an effect that the sample can be concentrated in an accurate amount by performing backflushing of the mesh part by releasing the sample caught in the mesh part by injecting air without using a separate washing water.

1 is a block diagram showing a concentrating apparatus according to an embodiment of the present invention,

2 is a block diagram showing a concentrating device according to an embodiment of the present invention in a state in which sample water concentration is completed;

3 is a block diagram showing a concentrating device according to another embodiment of the present invention,

4 is a flowchart illustrating a concentration method according to an embodiment of the present invention.

Hereinafter, the embodiments disclosed in the present specification will be described in detail with reference to the accompanying drawings, but the same or similar components are assigned the same reference numerals regardless of reference numerals, and overlapping descriptions thereof will be omitted. The suffixes “unit” and “group”, “module” and “unit”, “unit” and “unit”, “device” and “system” for components used in the following description are considered only for ease of writing the specification. It is assigned or used interchangeably, and does not have a distinct meaning or role by itself.

In addition, in describing the embodiments disclosed in the present specification, if it is determined that detailed descriptions of related known technologies may obscure the gist of the embodiments disclosed in the present specification, the detailed description thereof will be omitted. In addition, the accompanying drawings are only for easy understanding of the embodiments disclosed in the present specification, and the technical spirit disclosed herein is not limited by the accompanying drawings, and all changes included in the spirit and scope of the present invention , should be understood to include equivalents or substitutes.

Terms including an ordinal number, such as first, second, etc., may be used to describe various elements, but the elements are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

When a component is referred to as being “connected” or “connected” to another component, it is understood that the other component may be directly connected or connected to the other component, but other components may exist in between. it should be On the other hand, when it is said that a certain element is "directly connected" or "directly connected" to another element, it should be understood that no other element is present in the middle.

The singular expression includes the plural expression unless the context clearly dictates otherwise.

In the present application, terms such as "comprises" or "have" are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It is apparent to those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit and essential characteristics of the present invention.

1 is a block diagram showing a concentrating apparatus according to an embodiment of the present invention, and FIG. 2 is a block diagram showing a concentrating apparatus according to an embodiment of the present invention in a state where sample water concentration is completed.

1 and 2 , the concentrating device 100 according to an embodiment of the present invention includes a housing 101 and a mesh unit 103 installed inside the housing 101 to filter aquatic organisms. and is configured to sample aquatic life contained in ballast water.

The ballast water treatment device (not shown) is a device for sterilizing the ballast water flowing into the ship, and electrolyzing or chemically treating the ballast water flowing into the ship during ballasting. It is processed in a variety of ways, such as input.

The ballast water treated in this way flows into a ballast tank (not shown), is stored, and is discharged out of the ship during deballasting.

It should be judged whether the discharged ballast water meets the emission standards (IMO D-2 standard) prescribed by the International Maritime Organization. will measure

The concentrator 100 according to an embodiment of the present invention is provided with a sample water inlet pipe 111 and a sample water outlet pipe 141 to receive and discharge sample water sampled from some of the discharged ballast water. A housing 101 and a mesh portion 103 for filtering aquatic organisms of a predetermined size or larger included in the sample water are provided.

Here, the flow meter 113 is installed in the sample water inlet pipe 111 provided in the housing 101 to measure the flow rate of the sample water flowing in through the sample water inlet pipe 111, and to open and close the inflow of the sample water. A sample water inlet valve 112 is installed so that

At one lower side of the housing 101, a sample water discharge pipe 141 is provided to discharge the sample water that has passed through the mesh unit 103. The sample water discharge pipe 141 includes a sample water discharge valve 142. is installed When the sample water discharge valve 142 is opened, the sample water is discharged to a drain tank (not shown) through the sample water discharge pipe 141 .

In an embodiment of the present invention, the installation height of the sample water discharge pipe 141 may be set to correspond to the concentration flow rate (ie, the amount of sample water concentrated after concentration is complete). For example, when the shape of the housing 101 is cylindrical, the circular area is 1,000 mm ² , and the concentrated flow rate is 50 ml, the installation height of the sample water discharge pipe 141 is 50 mm from the bottom bottom of the housing 101 . will be placed in a remote location. As such, it is possible to calculate the installation height of the sample water discharge pipe 141 based on the value obtained by dividing the concentration flow rate by the cross-sectional area of the housing 101 .

The mesh unit 103 is installed inside the housing to filter out and collect aquatic organisms of a predetermined size (eg, 50 μm) or larger included in the sample water introduced from the sample water inlet pipe 111 . It may be configured to include a mesh (103a) having a, the shape may be configured in various ways.

As an embodiment, the mesh unit 103 may be configured to be installed in a shape whose cross-sectional area becomes narrower toward the lower side so that aquatic organisms caught in the mesh unit 103 due to gravity gather at the bottom of the mesh unit 103 .

The shape of the mesh portion 103, as shown in FIGS. 1 and 2, is formed in a substantially downward convex hemispherical shape, so that the aquatic organisms caught in the mesh portion 103 naturally gather at the bottom due to gravity and concentrate can be The hemispherical mesh portion 103 has an advantage in that it increases the surface area and can be collected in the center of the mesh portion 103 . Of course, the shape of the mesh portion 103 of the present invention is not limited to such a hemispherical shape and may be configured in various shapes such as a funnel shape tapered to decrease the cross-sectional area toward the bottom.

3 is a block diagram illustrating a concentrating device according to another embodiment of the present invention, and referring to FIG. 3 , the mesh unit 103 includes a mesh 103a having eyes of a predetermined size, and the shape of the mesh 103a. It may include a frame (103b) to which at least a portion of the mesh (103a) is coupled to maintain the.

In the present invention, the material of the mesh portion 103 is excellent in durability and corrosion resistance, and may be formed of a nylon or stainless material that can be processed to have flexibility. It can be configured to be coupled with the frame 103b of a predetermined shape so as to maintain the shape of the mesh part 103 even after being rotated.

As an embodiment, the mesh portion 103 is formed by combining two semi-circular frames 103b coupled in one circle and an X-shape to each other so that when the mesh 103a is fastened to the frame 103b, a semi-circular shape can be maintained.

In this way, when the mesh portion 103 is configured to maintain its shape even after being rotated by 180 degrees, the mesh 103a having flexibility is not tangled even after rotation but also maintains the shape against the incoming air pressure, so the mesh 103a ), it is possible to gently shake off the aquatic life caught in the air pressure. In addition, if the shape of the mesh portion 103 composed of a hemispherical shape is maintained in a state rotated by 180 degrees, after rotation, the mesh 103 is located closer to the air inlet through the air inlet pipe 121, so backwashing There is also an advantage that the effect is further improved.

The concentrator 100 according to an embodiment of the present invention is provided with an air inlet pipe 121 in the housing 101 of the mesh portion 103 to prevent clogging by aquatic organisms caught in the mesh portion 103, and , it is possible to perform backflushing by providing a motor 160 for rotating the mesh portion 103 by 180 degrees.

The air inlet pipe 121 is disposed on the upper side of the mesh part 103 and is configured to inject air into the mesh part 103 , and the air inlet pipe 121 is configured to inject air into the housing 101 at the time of backwashing. An air inlet valve 122 may be installed so that the

In addition, in the embodiment of the present invention, an air exhaust pipe 131 is provided in the housing 101 under the mesh portion 103 to discharge the air introduced into the housing 101 . Here, the check valve 132 may be installed in the air discharge pipe 131 . In the present invention, the air introduced into the housing 101 forms a constant pressure within the housing 101, releases the aquatic organisms attached to the mesh part 103, and drops it into the concentrated sample water below, followed by an air discharge pipe ( 131), since the check valve 132 is opened only when the air pressure inside the housing 101 is higher than a predetermined pressure, when air is injected through the air inlet pipe 121, the pressure inside the housing 101 is naturally reduced. Backwashing by air flow can be smoothly performed while forming at a predetermined pressure higher than the pressure (eg, 5 bar).

Here, the installation height of the air discharge pipe 131 is preferably located between the aforementioned sample water discharge pipe 141 and the mesh unit 103 . By installing in this way, it is possible to prevent the concentrated sample water from flowing out to the air discharge pipe 131 in the backwashing process.

The motor 160 is provided with a rotating shaft 161 in the horizontal direction, and the rotating shaft 161 is connected to the mesh unit 103 . As the rotating shaft 161 rotates, the mesh unit 103 also rotates accordingly.

Here, the motor 160 is preferably a step motor with easy rotation angle adjustment.

The concentrating apparatus 100 according to an embodiment of the present invention may include a control unit 170 for controlling the motor 160 to rotate the mesh unit 103 180 degrees when a predetermined condition is satisfied.

As an example of the condition for rotating the mesh unit 103 , it may be based on the inflow sample water flow rate measured by the flow meter 113 installed in the sample water inflow pipe 111 . That is, when the inflow sample water flow rate reaches the target flow rate (greater than the target flow rate), the control unit 170 may rotate the mesh unit 103 to perform the backwashing process.

As another embodiment, the mesh unit 103 may be rotated every predetermined period. In this case, while the mesh part 103 is rotated and the backwashing process is performed, the sample water inlet valve 112 is closed to block the inflow of the sample water, and then, it is preferable to introduce air through the air inlet pipe 121 .

The control unit 170 provided in the embodiment of the present invention generates a control signal for opening and closing the sample water inlet valve 112, the sample water outlet valve 142, and the air inlet valve 122, respectively, and an appropriate backwash time point. (For example, when the flow rate measurement value measured by the flow meter 113 is received and compared with the target flow value, and the target flow rate is reached), by controlling the mesh unit 103 to rotate, the concentration operation can be automatically performed. be able to

On the other hand, a sample discharge pipe 151 is connected to the lower end of the housing 101 located on the lower side of the mesh unit 103 to discharge concentrated aquatic organisms, and a sample discharge valve 152 is installed in the sample discharge pipe 151, When the concentration of the aquatic organisms is completed, the concentrated sample water is configured to be discharged.

Referring to FIG. 4 , the concentration method according to an embodiment of the present invention uses the concentration apparatus according to the embodiment of the present invention described above, and first, sample water is introduced into the housing (S110). That is, the sample water inlet valve and the sample water outlet valve are opened so that the sample water flows into the housing and passes through the mesh unit and then discharged.

Thereafter, the flow rate flowing into the sample water inlet pipe is measured using a flow meter installed in the sample water inlet pipe (S120).

Next, the control unit compares the inflow flow rate and the target flow rate (S130).

As a result of the comparison, if the inflow flow rate is less than the target flow rate, the steps of measuring the inflow flow rate ( S120 ) and comparing the inflow flow rate with the target flow rate ( S130 ) are repeated.

When the inflow flow rate is equal to the target flow rate, the sample water inlet valve and the sample water outlet valve are closed (S140).

Then, the control unit operates the motor to rotate the mesh unit 180 degrees (S150).

After the rotation of the mesh unit is completed, a process of backwashing the mesh unit with air is performed (S160). That is, by opening the air inlet valve, injecting air into the housing, and allowing the air to be discharged through the air discharge pipe in which the check valve is installed, the air passes through the mesh unit at a predetermined pressure or more to backwash the mesh unit, and after a predetermined time, the air inlet valve close the

As described above, the concentrating apparatus and method according to an embodiment of the present invention can increase the removal efficiency and quantitatively concentrate by injecting air to remove the aquatic organisms attached to the mesh part, thereby automating the concentration process. be able to do

In addition, since the aquatic organisms inserted in the mesh are backwashed by air, there is no need to add additional backwashing water to the concentrated sample water again, and it is possible to obtain an accurate sample water concentration capacity without loss of aquatic organisms to be collected.

Concentrator according to an embodiment of the present invention, as described above, not only can be applied to the IMO D-2 standard biological death test, it is automated and variously applied to a device for concentrating and measuring aquatic organisms or other samples. , can be used as a more accurate means of concentration.

The above description is merely illustrative of the technical idea of the present invention, and various modifications, changes, and substitutions are possible within the range that does not depart from the essential characteristics of the present invention by those of ordinary skill in the art to which the present invention pertains. will be. Accordingly, the embodiments disclosed in the present invention and the accompanying drawings are for explaining, not limiting, the technical spirit of the present invention, and the scope of the technical spirit of the present invention is not limited by these embodiments and the accompanying drawings. . The protection scope of the present invention should be construed by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

Claims

a housing provided with a sample water inlet pipe and a sample water outlet pipe to receive and discharge sample water;

a mesh unit installed inside the housing and filtering out aquatic organisms included in the sample water flowing in from the sample water inlet pipe and discharged through the sample water outlet pipe;

a motor having a rotating shaft in the transverse direction, the rotating shaft being connected to the mesh unit to rotate the mesh unit;

an air inlet pipe provided in the housing above the mesh unit, and an air discharge pipe provided in the housing below the mesh unit; and

Concentrating device comprising a; when satisfying a predetermined condition, the control unit for controlling the motor to rotate the mesh unit 180 degrees.
The method according to claim 1,

The mesh part,

A concentrator having a substantially downwardly convex hemispherical shape.
3. The method according to claim 2,

The mesh part,

a mesh having eyes of a predetermined size;

Concentrating apparatus comprising a frame to which at least a portion of the mesh is coupled to maintain the shape of the mesh.
The method according to claim 1,

A flow meter is installed in the sample water inlet pipe,

When the flow rate of the inflow sample water measured by the flow meter is greater than the target flow rate, the control unit controls the mesh unit to rotate.
5. The method according to claim 4,

The installation height of the sample water discharge pipe is calculated based on the value obtained by dividing the concentration flow rate by the cross-sectional area of the housing, concentrating device.
6. The method of claim 5,

The installation height of the air discharge pipe is between the sample water discharge pipe and the mesh part, the concentrator.
7. The method of claim 6,

Concentrator, in which a check valve is installed in the air exhaust pipe.
The method according to claim 1,

The motor is a stepper motor, a thickener.
9. The method according to any one of claims 1 to 8,

A sample water inlet valve and a sample water outlet valve are installed in the sample water inlet pipe and the sample water outlet pipe, respectively,

An air inlet valve is installed in the air inlet pipe,

The control unit is configured to open and close the sample water inlet valve, the sample water outlet valve, and the air inlet valve.
Using the concentrating device of claim 9,

(a) opening the sample water inlet valve and the sample water outlet valve so that the sample water flows into the housing and passes through the mesh unit and then discharged;

(b) measuring the flow rate flowing into the sample water inlet pipe;

(c) closing the sample water inlet valve and the sample water outlet valve when the target flow rate is introduced;

(d) operating the motor to rotate the mesh portion 180 degrees;

(e) opening the air inlet valve to inject air into the housing; and

(f) closing the air inlet valve after a predetermined time; Concentrating method, including.