KR102595836B1 - Non-filter dust collecting method for both dry and wet cutting using a wire saw - Google Patents

Abstract

The present invention relates to a filter-free dust collection method for both dry and wet cutting using a wire saw. For this purpose, opening the drain valve 350 in the case of wet cutting (S110) and closing the drain valve 350 in the case of dry cutting (S115); A step (S120) of setting the vacuum pumps 260 of the secondary dust collector 200 to operate according to the number of primary dust collectors 100; As the cutting process of the wire saw begins (S130), separating and collecting coarse dust in the primary dust collector 100 (S140); (a) In the case of dry cutting, (a-1) the air and fine dust from the plurality of primary dust collectors 100 are integrated in the primary integrated connector 210, and then the air and fine dust are collected in the cyclone 220. Separating dust (S200); (a-2) The separated fine dust is sludged in the primary water tank 300 at the bottom of the cyclone 220 (S210), and the separated air passes through the vacuum pump 260 and then enters the 3rd integrated connector. Step (S220) of integrating into integrated air at (370); (a-3) A step in which ultrafine dust contained in the integrated air is collected in the secondary water tank 400 as the integrated air passes through the secondary water tank 400 (S230); and (a-4) a step (S240) in which integrated air is discharged into the atmosphere through the air outlet 420, (b) in the case of wet cutting, (b-1) from the cyclone 220 to the primary water tank. Step (S160) in which water and fine dust (235) are transferred to (300); and (b-2) a step (S170) in which water and fine dust 235 are purified and discharged through the water collection treatment device 500 connected to the drain valve 350.

Description

Non-filter dust collecting method for both dry and wet cutting using a wire saw}

The present invention relates to a dust collection and collection device for dust, sludge and wastewater generated when cutting concrete using a wire saw, and more specifically, to a filter-free dust collection method for both dry and underwater cutting using a wire saw.

In general, wire saws are widely used for dismantling or cutting reinforced concrete structures. Figure 1a is a schematic diagram of a concrete dry cutting device and dust collection device using a wire saw, and Figure 1b is a schematic diagram of a concrete underwater cutting device and dust collection device using a wire saw. As shown in FIGS. 1A and 1B, cutting work is performed by wrapping a wire saw around a concrete structure to be dismantled and then rotating it using a driving device.

However, as the structure to be dismantled is cut, a large amount of dust, sludge, and wastewater is generated depending on the cutting method. As environmental pollution becomes an increasingly sensitive issue, such dust, sludge, and wastewater become causes of air and water pollution. was pointed out.

Therefore, in both cases of dry cutting on the ground or underwater cutting in the water, a shielding device or water blocking device was installed around the wire saw to prevent the spread of generated waste. Then, a dust collection device was connected to the shielding device or water blocking device to collect dust.

However, in systems such as those shown in FIGS. 1A and 1B, the conventional dust collector used a filter to filter dust, but the lifespan of the filter was short due to the large amount of dust generated, and frequent replacement was inconvenient and uneconomical. And based on experience, the operator had to stop the equipment and replace the filter.

In addition, in the case of dry cutting sites, the length of the wire saw was different for each site and the amount of dust generated was different, but the vacuum pump of the dust collection device always operated at a constant pressure or in one of the strong and weak modes. Therefore, there were many cases where the dust collection device overworked more than necessary or did not generate sufficient suction power.

In addition, in the case of underwater cutting, water was introduced along with dust, so in order to filter it, unlike a dry dust collection device, a separate underwater filtration device for treating sludge and wastewater had to be installed and operated. This resulted in increased costs of equipment purchase and inefficiency in equipment operation. Additionally, a coagulant was administered to quickly coagulate the dust contained in the water, which caused secondary environmental pollution.

1. Republic of Korea Patent Registration No. 10-0806573 (Dust collection device and dust collection method for dry cutting of structures using a diamond wire saw).

Therefore, the present invention was created to solve the above problems, and the problem to be solved by the present invention is dry and underwater cutting using a wire saw that can be commonly used for dry cutting and underwater cutting and does not require a separate filter. It provides a dual-use filter-free dust collection method.

Another object of the present invention is to provide a filter-free method for both dry and underwater cutting using a wire saw that can adjust the output from one secondary dust collector after appropriately arranging a plurality of primary dust collectors according to the cutting situation in the field. It provides a dust collection method.

Another object of the present invention is to provide a filter-free dust collection method for both dry and underwater cutting using a wire saw that can continuously remove coarse dust, fine dust, and ultrafine dust without replacing filters.

However, 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 apparent to those skilled in the art from the description below. It will be understandable.

In order to achieve the above technical problem, in the dust collection device generated during cutting concrete using a wire saw, a plurality of dust collection devices are installed along the longitudinal direction of the wire saw to collect coarse dust (165). ); A secondary dust collector (200) that integrates and connects a plurality of primary dust collectors (100) to generate a suction force corresponding to the number of primary dust collectors (100) and includes a cyclone (220) that collects fine dust; A drain valve 350 installed on the outlet side of the cyclone 220 and closed during dry cutting and opened during underwater cutting; and a water collection treatment device (500) connected to the drain valve (350), which collects and purifies water and dust (235) generated during underwater cutting. A filterless dust collection device is provided.

In addition, the primary dust collection device 100 includes a suction hopper 110 and a primary connector 120 disposed adjacent to the concrete and the wire saw; A dust collection body 130 connected to the primary connector 120 and dropping the coarse dust 165 through the descending passage 140; and a collection net 160 installed at the lower part of the dust collection body 130.

In addition, the secondary dust collector 200 includes a secondary connector 70 connected to each primary dust collector 100; A primary integrated connector (210) in which a plurality of secondary connectors (70) are integrated; Cyclone (220) connected to the primary integrated connector (210); A secondary integrated connector (250) connected to the upper part of the cyclone (220) to discharge air; and a tertiary connector 255 and a vacuum pump 260 that are each branched from the secondary integrated connector 250 and individually controlled.

Additionally, a fourth connector 265 connected to each vacuum pump 260; A third integrated connector (270) in which a plurality of fourth connectors (265) are integrated; And a secondary water tank 400 connected to the tertiary integrated connector 270 and containing water 450 therein to remove ultrafine dust into the water.

Additionally, the secondary water tank 400 further includes an air outlet 420 and an air filter 430.

Additionally, the plurality of vacuum pumps 260 are turned on/off based on the number of primary dust collection devices 100.

In addition, a primary water tank 300 is installed between the lower side of the cyclone 220 and the drain valve 350 and contains water 450 therein to remove fine dust into the water.

In addition, one side of the water collection and treatment device 500 is connected to the drain valve 350, and a plurality of water collection tanks are connected in series.

Additionally, at least one of the plurality of water collection tanks includes an inner wall 537 to allow water to overflow.

In addition, a plurality of water collection pipes are further included to connect the plurality of water collection tanks in series, and at least one of the plurality of water collection pipes has a different installation height.

The object of the present invention as described above is a dust collection method using the above-described filter-free dust collection device, in which, in case of underwater cutting, the drain valve 350 is opened (S110), and in the case of dry cutting, the drain valve 350 is closed. (S115); A step (S120) of setting the vacuum pumps 260 of the secondary dust collector 200 to operate according to the number of primary dust collectors 100; As the cutting process of the wire saw begins (S130), separating and collecting coarse dust in the primary dust collector 100 (S140); (a) In the case of dry cutting, (a-1) the air and fine dust from the plurality of primary dust collectors 100 are integrated in the primary integrated connector 210, and then the air and fine dust are collected in the cyclone 220. Separating dust (S200); (a-2) The separated fine dust is sludged in the primary water tank 300 at the bottom of the cyclone 220 (S210), and the separated air passes through the vacuum pump 260 and then enters the 3rd integrated connector. Step (S220) of integrating into integrated air at (370); (a-3) A step in which ultrafine dust contained in the integrated air is collected in the secondary water tank 400 as the integrated air passes through the secondary water tank 400 (S230); and (a-4) a step (S240) in which integrated air is discharged into the atmosphere through the air outlet 420, (b) in the case of underwater cutting, (b-1) from the cyclone 220 to the primary water tank. Step (S160) in which water and fine dust (235) are transferred to (300); and (b-2) a step (S170) in which the water and fine dust 235 are purified and drained through the water collection treatment device 500 connected to the drain valve 350 (S170). A filter-free dust collection method for both dry and underwater cutting is provided.

In addition, in the coarse dust separation step (S140), the coarse dust falls and is separated while the air and dust ascend after descending from the primary dust collection device 100.

Additionally, the vacuum pump 260 has the capacity to operate one primary dust collection device 100.

Additionally, in the integrated air discharge step {S240}, the integrated air is discharged while passing through the air filter 430.

In addition, in the purification treatment step (S170), water and fine dust 235 are purified by precipitation of fine dust as they pass through a plurality of water collection tanks connected in series.

Additionally, each of the plurality of water collection tanks has a size sufficient to provide a flow rate at which fine dust can settle.

In addition, at least one of the plurality of water collection tanks further includes an inner wall 537 to allow overflow.

Additionally, in the transfer step (S160) of the water and fine dust 235, the water and fine dust 235 include air.

In addition, the ultrafine dust collection step (S230) further includes a step in which the integrated air preferentially collides with the collision plate 410 in the secondary water tank 400.

Additionally, the number of water collection tanks is 3 to 5.

According to one embodiment of the present invention, a dust collection method that can be commonly used for dry cutting and underwater cutting and does not require a separate filter is provided. Therefore, since only one dust collection system is required, high economic efficiency can be secured in terms of purchase cost and operation of the system.

In addition, after appropriately arranging a plurality of primary dust collection devices according to the cutting situation in the field, the output can be adjusted from one secondary dust collection device. This has the advantage of not requiring skilled workers while implementing optimal cutting conditions.

In addition, coarse dust, fine dust, and ultrafine dust can be continuously removed without replacing filters. Therefore, air pollution and water pollution problems can be resolved, eco-friendly cutting operations can be implemented, and various civil complaints can be blocked at the source.

However, the effects that can be obtained from the present invention are not limited to the effects mentioned above, and other effects not mentioned above will be clearly understood by those skilled in the art from the description below. You will be able to.

The following drawings attached to this specification illustrate preferred embodiments of the present invention, and serve to further understand the technical idea of the present invention together with the detailed description of the invention described later. Therefore, the present invention includes the matters described in such drawings. It should not be interpreted as limited to only .
Figure 1a is a schematic diagram of a concrete dry cutting device and dust collection device using a wire saw;
Figure 1b is a schematic diagram of an underwater concrete cutting device and dust collection device using a wire saw;
Figure 1c is a perspective view of the underwater water blocking device 10 and the drain tank 20 applied to the present invention;
Figure 2 is a configuration diagram of a filter-free dust collection device for both dry and underwater cutting using a wire saw used in the present invention;
Figure 3 is an internal configuration diagram of the primary dust collection device 100 in Figure 2;
Figure 4 is an internal configuration diagram of the secondary dust collection device 200 in Figure 2;
Figure 5 is a configuration diagram of the water collection and treatment device 500 connected to the secondary dust collection device 200 of Figure 2;
Figure 6 is a flowchart of a filter-free dust collection method for both dry and underwater cutting using a wire saw according to an embodiment of the present invention.

Below, with reference to the attached drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention. However, since the description of the present invention is only an example for structural or functional explanation, the scope of the present invention should not be construed as limited by the examples described in the text. In other words, since the embodiments can be modified in various ways and can have various forms, the scope of rights of the present invention should be understood to include equivalents that can realize the technical idea. In addition, the purpose or effect presented in the present invention does not mean that a specific embodiment must include all or only such effects, so the scope of the present invention should not be understood as limited thereby.

The meaning of terms described in the present invention should be understood as follows.

Terms such as “first” and “second” are used to distinguish one component from another component, and the scope of rights should not be limited by these terms. For example, a first component may be named a second component, and similarly, the second component may also be named a first component. When a component is referred to as being “connected” to another component, it should be understood that it may be directly connected to the other component, but that other components may also exist in between. On the other hand, when a component is referred to as being “directly connected” to another component, it should be understood that there are no other components in between. Meanwhile, other expressions that describe the relationship between components, such as "between" and "immediately between" or "neighboring" and "directly neighboring" should be interpreted similarly.

Singular expressions should be understood to include plural expressions, unless the context clearly indicates otherwise, and terms such as “comprise” or “have” refer to the specified features, numbers, steps, operations, components, parts, or them. It is intended to specify the existence of a combination, and should be understood as not excluding in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

All terms used herein, unless otherwise defined, have the same meaning as commonly understood by a person of ordinary skill in the field to which the present invention pertains. Terms defined in commonly used dictionaries should be interpreted as consistent with the meaning they have in the context of the related technology, and cannot be interpreted as having an ideal or excessively formal meaning unless clearly defined in the present invention.

Figure 2 is a configuration diagram of a filter-free dust collection device for both dry and underwater cutting using a wire saw used in the present invention. As shown in FIG. 2, six primary dust collection devices 100 are installed along the length of the wire saw cutting concrete, and are configured to determine cutting speed, amount of dust, type of cutting (e.g. dry cutting or underwater cutting), and type of concrete. Depending on the type and cutting location (e.g. suburb, city center, residential area, etc.), a range of 2 to 10 can be selected.

The six primary dust collectors 100 and one secondary dust collector 200 are individually connected by the secondary connector 70 and are gathered in the primary integrated connector 210. The primary dust collector 100 is for collecting coarse dust, and the secondary dust collector 200 collects fine dust and ultrafine dust during dry cutting, converts the dust into sludge when cutting underwater, and connects it to water collection treatment. It is for this purpose.

Configuration of primary dust collection device

Hereinafter, the configuration of the primary dust collection device 100 will be described in detail with reference to the attached drawings. FIG. 3 is an internal configuration diagram of the primary dust collection device 100 in FIG. 2. As shown in Figure 3, the suction hopper 110 is installed adjacent to the wire saw and has a funnel shape with a wide entrance. When a shielding member or water blocking member is installed along the wire saw, the suction hopper 110 is installed penetrating through the shielding member or water blocking member.

One end of the primary connector 120 is connected to the suction hopper 110, and the other end is connected to the dust collection body 130. This primary connection pipe 120 may be a flexible rubber pipe, synthetic resin pipe, or composite pipe.

The dust collection body 130 has a hollow cylindrical shape, and a primary connection pipe 120 is formed on the outside, and a descending passage 140 is formed in the axial direction. An upward passage 145 is formed in the axial area of the dust collection body 130.

The primary plug 130 is installed at the bottom of the rising passage 145 to be movable in the axial direction by the operator. The primary plug 130 is shaped like a cone or truncated cone and opens and closes the lower end of the rising passage 145.

The secondary plug 155 is installed at the bottom of the dust collection body 130 so that it can be moved in the axial direction by the operator. The secondary plug 155 is shaped like a cone or truncated cone and opens and closes the bottom of the dust collection body 130.

The collection net 160 may be a vinyl net or a fabric net inserted into the bottom of the dust collection body 130. The collection net 160 collects coarse dust 165 that is large or heavy enough to fall down the ascending passage 145.

One end of the secondary connector 70 is connected to the upper part of the dust collection body 130, and air and dust that rise up to the rising passage 145 pass through. The other end of the secondary connector 70 is connected to the secondary dust collection device 200. The secondary connector 70 may be of the same material and shape as the primary connector 120.

Configuration of secondary dust collection device

Hereinafter, the configuration of the secondary dust collection device 200 will be described in detail with reference to the attached drawings. FIG. 4 is an internal configuration diagram of the secondary dust collection device 200 in FIG. 2. As shown in FIG. 4, the primary integrated connector 210 is connected to six secondary connectors 70, and the other end is connected to the upper side of the cyclone 220.

Cyclone 220 is a known component that separates gas and solid from a mixture of gas and solid using centrifugal force. The air separated from the cyclone 240 is delivered to the upper primary air flow pipe 240 and the secondary integrated connection pipe 250.

A primary water tank 300 is installed at the bottom of the cyclone 220, and the inside is filled with water 310 to a certain height. The primary water tank 300 is separated from the cyclone 220 and collects the falling fine dust 230. The fine dust 230 collected in the primary water tank 300 forms sludge 320 and is discharged separately.

The secondary integrated connector 250 is connected to the cyclone 220 on one side and a plurality of vacuum pumps 260 on the other side. That is, one end of the tertiary connector 255 is connected to the secondary integrated connector 250, and the other end is connected to a vacuum pump 260. As shown in FIG. 4, six tertiary connection pipes 255 are configured for six vacuum pumps 260.

The six vacuum pumps 260 can be individually turned on/off. If three primary dust collectors 100 are connected, the vacuum pump 260 can turn on three and turn off three. This allows flexible operation depending on the cutting environment. The vacuum pump 260 can take various forms, such as a vane pump, piston pump, blower, or fan.

One end of the fourth connector 265 is connected to the vacuum pump 260, and the other end is connected to the third integrated connector 270. That is, six fourth connectors 265 are required for six vacuum pumps 260.

One end of the 3rd integrated connector 270 is connected to a plurality of 4th connectors 265, and the other end is connected to the secondary water tank 400. That is, the number of operations of the vacuum pump 260 can be adjusted to suit the suction capacity or dust collection capacity between the secondary integrated connector 250 and the tertiary integrated connector 270.

The secondary water tank 400 is installed at the bottom of the tertiary integrated connector 270 and may be placed adjacent to the primary water tank 300. The interior of the secondary water tank 400 is filled with water 450 at a certain height, and a collision plate 410 is provided so that water sprayed from the tertiary integrated connector 270 and ultrafine dust collide. That is, the collision plate 410 is installed to face vertically while maintaining a certain distance from the secondary air flow pipe 275.

The air outlet 420 is formed at the top of the secondary water tank 400 and discharges air to the outside. The air filter 430 is installed on the air outlet 420 and collects a very small amount of fine dust or ultrafine dust. This air filter 430 may be a HEPA filter.

Two pairs of wheels 440 are installed at the lower part of the secondary dust collector 200, and make it easy to move the entire secondary dust collector 200.

One end of the drain pipe 340 is installed in the primary water tank 300, and a drain valve 350 for opening and closing is installed in the middle area. The drain valve 350 is closed during dry cutting and is opened during underwater cutting. The other end of the drain pipe 340 is connected to the water collection treatment device 500.

Configuration of water collection and treatment equipment

Hereinafter, the configuration of the preferred embodiment will be described in detail with reference to the attached drawings. FIG. 5 is a configuration diagram of a water collection treatment device 500 connected to the secondary dust collection device 200 of FIG. 2. As shown in FIG. 5, the water collection and treatment device 500 is roughly composed of a first water collection tank 510, a second water collection tank 530, a third water collection tank 550, and a fourth water collection tank 570.

The primary water collection tank 510 is connected to the drain pipe 340 and the drain valve 350, and contains primary treated water 515 therein.

The secondary water collection tank 530 is connected to the primary water collection tank 510 through the primary water collection pipe 520 on one side, and is connected to the third water collection tank 550 through the secondary water collection pipe 540 on the other side. At this time, the installation height of the primary water collection pipe 520 is higher than that of the secondary water collection pipe 540. This is to increase the movement path of treated water. The inner wall 537 is installed vertically inside the secondary water collection tank 530, and maintains a lower height than the secondary water collection tank 530 so that the secondary treated water 535 overflows (goes over) the inner wall 537. Let's do it. This can promote the precipitation of heavy dust.

The 3rd sump tank 550 is connected to the 2nd sump tank 530 through the 2nd sump pipe 540 on one side, and is connected to the 4th sump tank 570 through the 3rd sump pipe 560 on the other side. At this time, the installation height of the secondary water collection pipe 540 is lower than that of the tertiary water collection pipe 560. This is to increase the movement path of the tertiary treated water (555). And fine dust settles inside to form sludge.

The fourth sump 570 is connected to the 3rd sump sump 550 through a 3rd sump pipe 560 on one side, and a final drain pipe 580 is installed on the other side. At this time, the installation height of the tertiary water collection pipe 560 is higher than that of the final drainage pipe 580. This is to increase the movement path of the fourth treated water (575).

In the water collection and treatment device 500 of the present invention, a configuration of connecting the primary water collection tank 510 to the fourth water collection tank 570 in series is shown and explained, but it is not necessarily limited thereto. In other words, more sump tanks may be added or omitted. Additionally, some water collection tanks can be configured in parallel to increase residence time.

Behavior of dry cutting

Hereinafter, the operation of the preferred embodiment will be described in detail with reference to the attached drawings. Figure 6 is a flowchart of a filter-free dust collection method for both dry and underwater cutting using a wire saw according to an embodiment of the present invention. As shown in Figure 6, dry cutting is used to cut and dismantle concrete structures on the ground (e.g. apartments, buildings, overpasses, etc.). When dry cutting using a wire saw, no additional water is added, and even if it is added, only a small amount of water is injected for cooling or lubrication. That is, dry cutting of the present invention includes wet cutting.

In the preparation process, the primary dust collector 100 is distributed along the wire saw, and the suction hopper 110 is brought close to the wire saw. If a dust blocking member is installed along the wire saw, the suction hopper 110 is installed through the hole in the blocking member. This is to prevent dust from spreading into the atmosphere by organizing the entire process in a sealed manner.

Then, the drain valve 350 of the drain pipe 340 is closed (S115). The first water tank 300 and the second water tank 400 are filled with water 310 and 450 at a predetermined level.

Next, the vacuum pump 260 is operated in accordance with the installed number of primary dust collectors 100 (S120). That is, when three primary dust collectors 100 are installed, only three vacuum pumps 260 operate, and when five primary dust collectors 100 are installed, only five vacuum pumps 260 operate. This allows you to maintain a constant suction power. As the cutting path changes during cutting, the number of operating vacuum pumps 260 can be gradually reduced or increased.

Optionally, a pressure sensor (not shown) is installed in the first integrated connector 210 or the second integrated connector 250, and then the control unit (e.g. microcomputer, PLC) controls the vacuum pump 260 step by step according to the vacuum level. The number of operations can also be automatically adjusted.

As shown in FIG. 3, dust and air flowing in through the suction hopper 110 flow into the dust collection body 130 through the primary connection pipe 120. Dust and air that go down vertically through the descending passage (140) rise backwards through the rising passage (145). At this time, the coarse dust 165, which is heavy in weight, does not rise but falls as it is and is collected in the collection net 160 (S140).

Only air and fine dust rise through the rising passage 145 and are then transmitted to the secondary connector 70.

As shown in FIG. 4, air and fine dust sent from each primary dust collection device 100 are transmitted through the secondary connector 70 and then integrated in the primary integrated connector 210.

Next, fine dust and air are separated in the cyclone 220 (S200). The fine dust 230 falls from the bottom of the cyclone 220 and then falls into the water 310 of the primary water tank 300. Fine dust in the water 310 precipitates to form sludge 320 (S210). The collected sludge 320 is collected and processed separately.

At the same time, the air separated from the cyclone 220 and the ultrafine dust in the air reach the secondary integrated connection pipe 250 through the primary air flow pipe 240.

Next, it is transmitted to the fourth connector 265 through the third connector 255 of the operating vacuum pump 260.

Next, the air and ultrafine dust that have passed through the plurality of fourth connectors 265 are reintegrated in the third integrated connector 270 (S220). That is, a certain suction force can be generated or adjusted between the second integrated connector 250 and the third integrated connector 260.

Next, air and ultrafine dust flow into the secondary water tank (400) through the secondary air flow pipe (275). The introduced air and ultrafine dust collide on the collision plate 410 in the water 450 and then pass through the water 450. The collision plate 410 prevents ultrafine dust from being discharged directly through the air outlet 420 without passing through the water 450. And the collision plate 410 prevents the settled ultrafine dust from flowing again.

At this time, the ultrafine dust precipitates in water (450) and turns into sludge (S230). Then, the air rises from the water 450, is finally filtered through the air filter 430, and is discharged into the atmosphere as clean air (S240).

As the above-described process continues, all coarse dust 165, fine dust 230, and ultrafine dust generated during dry cutting are collected, and only clean air is returned to the atmosphere.

Operation of underwater cutting

Hereinafter, the operation of the preferred embodiment will be described in detail with reference to the attached drawings. Figure 6 is a flowchart of a filter-free dust collection method for both dry and underwater cutting using a wire saw according to an embodiment of the present invention. As shown in Figure 6, underwater cutting (or wet cutting) is used to cut and dismantle underwater concrete structures (e.g. bridge piers, marine structures, etc.). When cutting underwater using a wire saw, a water blocking member is installed to prevent dust from dispersing underwater. However, because perfect waterproofing is not achieved, small amounts of water often continuously flow into the water barrier member.

Figure 1c is a perspective view of the underwater water blocking device 10 and the drain tank 20 applied to the present invention. As shown in FIG. 1C, the water blocking device 10 is in close contact with the circumference of the underwater structure to be dismantled 14. As the wire saw progresses inside the water blocking device 10, the structure to be dismantled (14) is cut.

Sumps (20) are installed at regular intervals (e.g., 1 to 2 m), a wire duct (30) is connected to the top, water shutoff devices (10) are installed on the left and right, and a suction hopper (110) is installed at the bottom. is connected. The wire saw cuts while moving in the traveling direction 12, and is then transported in the direction of the rising wire saw 32 through the wire duct 30 by a pulley (not shown). Next, after adjusting tension and obtaining rotational force on the ground, it returns to the direction of the descending wire saw (34) and circulates. The lowering wire saw 34 is transferred in the opposite wire direction 16 through a pulley (not shown) in the drain tank 20.

In the preparation process, the water blocking device (10) and the drain tank (20) are brought into close contact with the structure to be dismantled (14) and subjected to waterproofing treatment. Next, the primary dust collection device 100 is distributed along the wire saw, and the suction hopper 110 is connected to the drain tank 20. This is to prevent dust from spreading into the water by organizing the entire process in a sealed manner.

After installing the water shutoff device 10 and the drain tank 20, the water in the water shutoff device 10 and the drain tank 20 is initially sucked in, and as cutting progresses, dust and slowly leaking water are released into the drain tank ( 20), it is discharged to the ground by the suction hopper 110.

Then, the drain valve 350 of the drain pipe 340 is opened (S110).

Next, the vacuum pump 260 is operated in accordance with the installed number of primary dust collectors 100 (S120). This is the same or similar to the dry cutting process.

As shown in FIG. 3, air, dust, and water flowing in through the suction hopper 110 flow into the dust collection body 130 through the primary connection pipe 120. Air, dust, and water that go down vertically through the descending passage 140 rise backwards through the rising passage 145. At this time, the coarse dust 165, which is heavy in weight, does not rise but falls as it is and is collected in the collection net 160 (S140).

Only air, fine dust, and water rise through the rising passage 145 and are then delivered to the secondary connection pipe 70.

As shown in FIG. 4, air, fine dust, and water sent from each primary dust collection device 100 are delivered through the secondary connector 70 and then integrated in the primary integrated connector 210. .

Next, air, fine dust, and water are separated in the cyclone 220 by the suction force of the vacuum pump 260. The air separated in the cyclone 220 and the ultrafine dust in the air reach the secondary integrated connection pipe 250 through the primary air flow pipe 240. The subsequent process of collecting air and ultrafine dust in the air is similar to dry cutting.

The water and fine dust (235) separated from the cyclone (220) fall (S160). Water and fine dust 235 fall from the bottom of the cyclone 220, pass through the primary water tank 300, drain pipe 340, and drain valve 350, and then flow into the water collection treatment device 500. do. That is, water and fine dust 235 are purified in the water collection treatment device 500 (S170).

As shown in FIG. 5, water and fine dust 235 lose their flow rate while filling the primary water collection tank 510, resulting in precipitation of fine dust. The water becomes primary treated water 515 and is delivered to the secondary water collection tank 530 through the primary water collection pipe 520. In the secondary water collection tank 530, water overflows the inner wall 537 and becomes secondary treated water 535. Fine dust that cannot overflow the inner wall 537 settles.

Next, the secondary treated water 535 is delivered to the tertiary sump tank 550 through the secondary sump pipe 540. Fine dust and ultrafine dust that do not rise from the tertiary collection tank 550 to the tertiary collection pipe 560 settle. The 3rd treated water 555 is delivered to the 4th water collection tank 570 and then drained into a stream, river, or sea through the final drain pipe 580.

In this water collection and treatment device 500, each water collection tank has a sufficient volume to contain a large amount of water compared to the small amount of water flowing in. Because of this, the flow rate is very slow to allow sufficient sedimentation within each sump.

As the above-described process continues, all coarse dust 165, fine dust 230, and ultrafine dust generated during underwater cutting are collected and collected, and the continuously flowing water becomes clean water and is returned to the water.

A detailed description of preferred embodiments of the invention disclosed above is provided to enable any person skilled in the art to make or practice the invention. Although the present invention has been described above with reference to preferred embodiments, those skilled in the art will understand that various modifications and changes can be made to the present invention without departing from the scope of the present invention. For example, a person skilled in the art may use each configuration described in the above-described embodiments by combining them with each other. Accordingly, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The present invention may be embodied in other specific forms without departing from the spirit and essential features of the present invention. Accordingly, the above detailed description should not be construed as restrictive in all respects and should be considered illustrative. The scope of the present invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the present invention are included in the scope of the present invention. The present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. In addition, claims that do not have an explicit reference relationship in the patent claims can be combined to form an embodiment or included as a new claim through amendment after filing.

10: Water blocking device,
12: Wire saw progress direction,
14: (Underwater) Structure to be dismantled,
16: Wire saw progress direction,
20: drain tank,
30: wire duct,
32: Rising wire saw,
34: descending wire saw,
50: mobile truck,
70: secondary connector,
100: primary dust collector,
110: suction hopper,
120: primary connector,
130: Dust collection body,
135: hollow guide,
140: descending passage,
145: ascending passage,
150: primary plug,
155: secondary plug,
160: capture net,
165: coarse dust,
200: secondary dust collector,
210: primary integrated connector,
220: Cyclone,
230: fine dust,
235: Water and fine dust,
240: Primary air flow pipe,
250: secondary integrated connector,
255: tertiary connector,
260: Vacuum pump,
265: Quaternary connector,
270: 3rd integrated connector,
275: secondary air flow pipe,
300: primary water tank,
310: water,
320: sludge,
340: drain pipe,
350: drain valve,
400: secondary water tank,
410: collision plate,
420: air outlet,
430: air filter,
440: wheels,
450: water
500: water collection treatment device,
510: primary sump,
515: primary treated water,
520: primary water collection pipe,
530: secondary sump tank,
535: secondary treated water,
537: inner wall,
540: secondary water collection pipe,
550: tertiary sump tank,
555: tertiary treated water,
560: tertiary water collection pipe,
570: 4th sump tank,
575: 4th treated water,
580: Final drain pipe.

Claims (10)

A plurality of primary dust collectors (100) are installed along the longitudinal direction of the wire saw to collect coarse dust (165); A secondary dust collector (200) includes a cyclone (220) that integrates and connects a plurality of the primary dust collectors (100) to generate a suction force corresponding to the number of the primary dust collectors (100) and collects fine dust. ); A drain valve 350 installed on the outlet side of the cyclone 220 and closed during dry cutting and opened during wet cutting; And a dust collection method using a filter-free dust collector, which is connected to the drain valve 350 and includes a water collection treatment device 500 that collects and purifies water and dust 235 generated during wet cutting,
In case of wet cutting, opening the drain valve 350 (S110), and in case of dry cutting, closing the drain valve 350 (S115);
A step (S120) of setting the vacuum pumps 260 of the secondary dust collector 200 to operate according to the number of the primary dust collectors 100;
As the cutting process of the wire saw is started (S130), separating and collecting coarse dust in the primary dust collection device 100 (S140);
(a) In the case of dry cutting, (a-1) the air and fine dust of the plurality of primary dust collectors 100 are integrated in the primary integrated connector 210, and then the air is discharged from the cyclone 220. and separating the fine dust (S200);
(a-2) The separated fine dust is sludged in the primary water tank 300 below the cyclone 220 (S210), and the separated air passes through the vacuum pump 260 and then 3 Step (S220) of being integrated in the primary integrated connector (370) to become integrated air;
(a-3) A step (S230) in which ultrafine dust contained in the integrated air is collected in the secondary water tank 400 as the integrated air passes through the secondary water tank 400; and
(a-4) comprising the step (S240) of discharging the integrated air into the atmosphere through the air outlet 420,
(b) In case of wet cutting, (b-1) transferring water and fine dust 235 from the cyclone 220 to the primary water tank 300 (S160); and
(b-2) a step (S170) in which the water and fine dust 235 are purified and drained through the water collection treatment device 500 connected to the drain valve 350; A filter-free dust collection method for both dry and wet cutting. According to claim 1,
The separation step (S140) of the coarse dust is a dry and wet method using a wire saw, characterized in that the coarse dust falls and is separated in the process of the air and dust rising after descending from the primary dust collection device 100. A filter-free dust collection method for both cutting and cutting. According to claim 1,
A filter-free dust collection method for both dry and wet cutting using a wire saw, characterized in that the vacuum pump (260) has a capacity to operate one primary dust collection device (100). According to claim 1,
The integrated air discharge step {S240} is a filter-free dust collection method for both dry and wet cutting using a wire saw, characterized in that the integrated air is discharged while passing through the air filter (430). According to claim 1,
In the purification process step (S170),
A filter-free dust collection method for both dry and wet cutting using a wire saw, characterized in that the water and fine dust 235 are purified by precipitation of the fine dust as they pass through a plurality of water collection tanks connected in series. According to claim 5,
A filter-free dust collection method for both dry and wet cutting using a wire saw, characterized in that each of the plurality of water collection tanks has a sufficient size to achieve a flow rate at which the fine dust can settle. According to claim 5,
A filter-free dust collection method for both dry and wet cutting using a wire saw, wherein at least one of the plurality of water collection tanks further includes an inner wall (537) to allow overflow. According to claim 1,
In the transfer step (S160) of the water and fine dust 235, the water and fine dust 235 include air. A filter-free dust collection method for both dry and wet cutting using a wire saw. According to claim 1,
The ultrafine dust collection step (S230) further includes a step in which the integrated air preferentially collides with the collision plate 410 in the secondary water tank 400. Dry and wet methods using a wire saw. A filter-free dust collection method for both cutting and cutting. According to claim 5,
A filter-free dust collection method for both dry and wet cutting using a wire saw, characterized in that the plurality of water collection tanks are 3 to 5.

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