JP3220445U - Dust collector - Google Patents

Abstract

Provided is a dust collecting device that is easy to manage with a simpler structure while maintaining dust collecting performance.
A dust collecting device (10) for collecting dust generated by cutting by a cutting device (30) by a suction device (40) through a suction hose (20) and collecting the dust in a dust collecting unit (50). The first dust collecting unit 60 collects dust by colliding with the dust colliding member 65 and dropping the dust, and the dust that has not fallen by the dust colliding member is blocked by the first filter unit 66, and the first dust collecting unit 60 collects the dust. A second filter portion 75 capable of blocking finer dust than the first filter portion, a third filter portion 76 capable of blocking finer dust than the second filter portion, and a HEPA filter portion 77 are arranged in succession. There is provided a second dust collecting unit 70 that collects dust by blocking and removing dust that has passed through the dust collecting unit by the second filter unit, the third filter unit, and the HEPA filter unit.
[Selection] Figure 1

Description

  The present invention relates to a dust collector for sucking and collecting dust generated by cutting a coating material of a building.

  For example, when dismantling a building such as a building, the coating material may adhere to the wall surface, floor surface, etc., as the coating material, such as the wall surface, floor surface, may contain harmful substances such as asbestos and heavy metals. If dismantled as it is, there are problems such as the scattering of harmful substances to the surroundings and a large amount of waste materials with harmful substances attached. Therefore, before the building is dismantled, the removal work of the coating material such as the wall surface is performed.

  In the removal work of the coating material, a dust collector that collects dust by sucking dust generated during cutting while cutting the coating material such as a wall surface is used (for example, see Patent Document 1). This dust collector includes a cutting section for cutting a coating material, a bug receiver tank for filtering dust in the air, a HEPA filter apparatus for filtering finer dust, a cutting section, a bug receiver tank, and a HEPA filter apparatus. A suction device that sucks in through a suction hose to be connected, and collects the dust of the coating material cut by the cutting unit by filtering with a bug receiver tank and a HEPA filter device.

  In the above dust collector, the bag receiver tank is equipped with a plurality of bag filters made of, for example, bag-shaped filter paper, dust is sucked from the outside to the inside of the filter, and the processing gas is applied to the dust adhered to the outer surface of the filter by filtration. It is configured to collect dust by being blown off. As described above, since the bug receiver tank has a complicated structure, it is inevitable that management such as inspection and filter replacement becomes complicated. Therefore, there is a demand for a dust collector that can be easily managed with a simpler structure while maintaining dust collection performance.

Japanese Patent Laid-Open No. 2013-3509

  The present invention has been made in view of the above points, and provides a dust collector that is easy to manage with a simpler structure while maintaining the dust collection performance of dust.

  That is, the invention of claim 1 is characterized in that a suction hose is connected to a cutting part for cutting a coating material of a building and a suction device is connected to the other end of the suction hose via a dust collecting part. A dust collecting device that sucks the dust of the coating material generated by cutting by the suction portion from the cutting portion through the suction hose by the suction device and collects the dust in the dust collecting portion, wherein the dust collecting portion is The sucked dust collides with the dust colliding member and is dropped, and the dust that has not fallen by the dust colliding member is removed by being blocked by the first filter part, and collected in the first dust accommodating part. 1 dust collecting part, a second filter part capable of blocking finer dust than the first filter part, a third filter part capable of blocking finer dust than the second filter part, and a HEPA filter part continuously Placed A second dust collecting part for collecting and collecting dust in the second dust container by blocking and removing the dust that has passed through the first dust collecting part by the second filter part, the third filter part, and the HEPA filter part; The present invention relates to a dust collector.

  According to a second aspect of the present invention, a first suction opening for sucking dust from the cutting part is formed on the lower side of the first filter part, and the first suction part is provided on the upper side of the first filter part. The dust collecting apparatus according to claim 1, wherein a first discharge opening for discharging air in the dust collecting portion is formed.

  According to a third aspect of the present invention, a second suction opening for sucking the dust that has passed through the first dust collecting part is formed on the lower side of the second filter part, and on the upper side of the HEPA filter part. The dust collecting apparatus according to claim 1 or 2, wherein a second discharge opening for discharging air in the second dust collecting section is formed.

  According to the dust collector according to claim 1, the suction hose is connected to the cutting portion for cutting the coating material of the building, and the suction device is connected to the other end of the suction hose via the dust collector. A dust collecting device that sucks the dust of the coating material generated by cutting by the cutting unit from the cutting unit through the suction hose by the suction device and collects the dust in the dust collecting unit. The dust part causes the sucked dust to collide with the dust collision member and drop it, and the dust that has not fallen by the dust collision member is blocked and removed by the first filter part, and is removed by the first dust storage part. A first dust collecting part for collecting dust, a second filter part capable of blocking finer dust than the first filter part, a third filter part capable of blocking finer dust than the second filter part, and a HEPA filter part; Continuously The second dust is collected by the second dust container by removing the dust that has passed through the first dust collecting part and blocked by the second filter part, the third filter part, and the HEPA filter part. Since it has a dust collecting section, the structure is simplified and it is easy to manage, and it is possible to work while maintaining excellent dust collecting performance for a long time.

  According to the dust collector according to the invention of claim 2, in the invention of claim 1, the first suction opening for sucking the dust from the cutting part is formed on the lower side of the first filter part. Since the first discharge opening for discharging the air in the first dust collecting part is formed on the upper side of the first filter part, the blocked dust is easily dropped and efficiently collects dust. be able to.

  According to the dust collector according to the invention of claim 3, in the invention of claim 1 or 2, the second suction opening for sucking the dust that has passed through the first dust collecting part to the lower side of the second filter part. Part is formed, and since the second discharge opening for discharging the air in the second dust collecting part is formed on the upper side of the HEPA filter part, the blocked dust is easily dropped, Dust can be collected efficiently.

It is a schematic sectional drawing of the dust collector which concerns on one Embodiment of this invention. It is principal part sectional drawing of a cutting part.

A dust collector 10 according to an embodiment of the present invention shown in FIG. 1 includes a suction hose 20 connected to a cutting unit 30 that cuts a coating material such as a wall surface or a floor surface of a building, and passes through a dust collecting unit 50. The suction device 40 is connected to the other end of the suction hose 20, and the dust of the coating material generated by cutting by the cutting unit 30 is sucked from the cutting unit 30 via the suction hose 20 by the suction device 40 and collected. The dust collecting device 50 includes a first dust collecting unit 60 and a second dust collecting unit 70.
In the figure, symbol W denotes a workpiece such as a wall surface of a building.

  The suction hose 20 is a member that connects and communicates the cutting unit 30, the first dust collection unit 60 and the second dust collection unit 70 of the dust collection unit 50, and the suction device 40. The suction hose 20 is made of a known flexible material, and is configured to be deformable by a bellows structure or the like. In FIG. 1, the code | symbol 21 is the 1st suction hose which connects the cutting part 30 and the 1st dust collection part 60, 22 is the 2nd suction hose which connects the 1st dust collection part 60 and the 2nd dust collection part 70, Reference numeral 23 denotes a third suction hose that connects the second dust collecting unit 70 and the suction device 40.

  The cutting unit 30 is a member that suctions the dust of the coating material generated by the cutting to the suction hose 20 as it is along with the cutting of the coating material. As shown in FIG. 2, the cutting unit 30 according to the embodiment includes a cutting body 35 that cuts a coating material inside the cover body 31. The cover body 31 is a member that suppresses scattering of dust generated by covering a cutting portion when cutting a coating material, and is formed in a dome shape, and a brush 32 that abuts the workpiece W over the entire outer periphery. The dust hose 20 is connected to a dust discharge portion 33 for discharging dust generated. The cutting body 35 has a cutting blade 36 for cutting the coating material, and rotates by a driving device 37 such as a motor for cutting. As the cutting blade 36, a cutting member such as a diamond cutter is preferably used. In FIG. 2, reference numeral 38 denotes a gripping part for a user to grip during work, and 39 denotes a power cord of the driving device 37.

The suction device 40 is composed of a known suction blower, and sucks air containing dust and the like from the cutting unit 30 through the dust collecting unit 50 via the suction hose 20 by suction operation. The suction device 40 is connected to the third suction hose 23 that is connected to the second dust collection unit 70 of the dust collection unit 50. In the suction device 40, the wind speed and the air volume (suction force) are appropriately set according to the length of the dust collecting device 10 (the length from the cutting unit 30 to the suction device 40), the diameter of the suction port of each unit 30, 50, and the like. For example, if the wind speed is 20 m / sec or more and the air volume is 5 m ³ / min or more, dust generated by cutting can be efficiently and reliably sucked.

  The dust collection unit 50 collects dust by gradually filtering the air containing the dust sucked by the suction device 40 through the first dust collection unit 60 and the second dust collection unit 70. The dust collecting unit 50 is surrounded by the isolation sheet 51 and is configured to prevent scattering of the collected dust.

  The first dust collecting unit 60 is a part that filters air containing dust sucked from the cutting unit 30 and collects relatively large dust, and includes a first dust collecting body 61, a dust collision member 65, 1 filter section 66. In FIG. 1, the code | symbol 69 is a 1st wheel member for enabling the 1st dust collection part 60 to move.

  The first dust collecting body 61 is made of a metal box, and is connected to the first dust receiving portion 62 for collecting dust formed in the lower portion and the first suction hose 21 to connect the first dust collecting body 62 from the cutting portion 30. It has the 1st suction opening part 63 in which the air containing dust is sucked, and the 1st discharge opening part 64 to which the 2nd suction hose 22 is connected and the air in the 1st dust collection part 60 is discharged | emitted. The 1st dust accommodating part 62 is formed in the inverted truncated pyramid shape which has the inclined surface 62b which inclines toward the bottom face 62a, and it is comprised so that dust may gather on the bottom face 62a side along the inclined surface 62b. Although not shown, the first dust container 62 is formed with a dust discharge unit for discharging the collected dust.

  The first suction opening 63 and the first discharge opening 64 are separated from each other by a first filter part 66 described later in the first dust collection body 61. Therefore, the air sucked from the first suction opening 63 is discharged from the first discharge opening 64 via the first filter portion 66. In particular, a first suction opening 63 is formed on the lower side of the first filter part 66, and a first discharge opening 64 is formed on the upper side of the first filter part 66.

  The dust collision member 65 is a member that is disposed in the vicinity of the front surface of the first suction opening 63 and causes air containing the sucked dust to collide to drop large dust such as small pieces. The dust collision member 65 is formed such that the collision surface 65a with the dust is inclined downward, so that the collided dust is bounced downward and falls. The shape of the dust collision member 65 is not particularly limited as long as it has an inclined collision surface 65a, but a plate-like member is preferable from the viewpoint of simplifying the structure. A plurality of dust impingement members 65 may be provided as necessary.

  The first filter portion 66 is a member that isolates the first suction opening 63 and the first discharge opening 64 and blocks (filters) and removes relatively large dust that has not fallen by the dust collision member 65. is there. The dust blocked by the first filter part 66 adheres to or falls on the first filter part 66 and is collected in the first dust container 62. As the first filter portion 66, for example, a nonwoven fabric made of plant fibers such as coconut shells is preferably used. In addition, the first filter portion 66 is preferably disposed in a substantially horizontal state in the first dust collection body 61. Since the first filter portion 66 is horizontal, the air sucked from the first suction opening 63 on the lower side of the first filter portion 66 passes from the lower surface side of the first filter portion 66, and the dust collision member 65 Dust with relatively large particles that did not fall due to the collision is blocked on the lower surface side of the first filter portion 66. Therefore, the blocked dust can easily fall and can be efficiently collected in the first dust container 62.

  Since the first dust collecting part 60 is configured by the dust collision member 65 disposed in front of the first suction opening 63 and the single first filter part 66, the internal structure is simple, In the maintenance, the first filter portion 66 can be easily replaced and can be easily managed.

  The second dust collection unit 70 is a part that filters and collects air containing dust that has passed through the first dust collection unit 60, and includes a second dust collection body 71, a second filter unit 75, and a third filter. The second filter unit 75, the third filter unit 76, and the HEPA filter unit 77 are continuously arranged. In FIG. 1, the code | symbol 79 is a 2nd wheel member for making the 2nd dust collection part 70 movable.

  The second dust collecting body 71 is made of a metal box, and the first dust collecting part is connected to the second dust containing part 72 for collecting dust formed in the lower part and the second suction hose 22. A second suction opening 73 through which air containing dust from 60 is sucked, and a second discharge opening 74 through which the third suction hose 23 is connected and the air in the second dust collection section 70 is discharged. . The 2nd dust accommodating part 72 is formed in the inverted truncated pyramid shape which has the inclined surface 72b inclined toward the bottom face 72a, and is comprised so that dust may gather along the inclined surface 72b at the bottom face 72a side. Although not shown, the second dust container 72 is formed with a dust discharge portion for discharging the collected dust.

  The second suction opening 73 and the second discharge opening 74 are disposed in the second dust collection body 71 by a second filter part 75, a third filter part 76, and a HEPA filter part 77, which will be described later. Therefore, the air sucked from the second suction opening 73 is discharged from the second discharge opening 74 via the second filter part 75, the third filter part 76, and the HEPA filter part 77. In particular, a second suction opening 73 is formed on the lower side of the second filter part 75, and a second discharge opening 74 is formed on the upper side of the HEPA filter part 77.

  The second filter unit 75 is configured to be able to block (filter) finer dust than the first filter unit 66, and is a member that blocks and removes dust that has passed without being removed by the first dust collecting unit 60. The dust blocked by the second filter unit 75 adheres to or falls on the second filter unit 75 and is collected in the second dust container 72. As the second filter unit 75, for example, a coarse air filter that mainly removes particles having a particle size larger than 5 μm as defined in JIS Z 8122 (2000) is preferably used. In addition, the second filter unit 75 is preferably disposed in a substantially horizontal state in the second dust collection body 71. Since the second filter part 75 is horizontal, dust contained in the air sucked from the second suction opening 73 on the lower side of the second filter part 75 is blocked on the lower surface side of the second filter part 75. Therefore, the blocked dust can easily fall and can be efficiently collected in the second dust container 72.

  The third filter unit 76 is configured to be able to block (filter) finer dust than the second filter unit 75, and is a member that blocks and removes dust that has passed without being removed by the second filter unit 75. The dust blocked by the third filter unit 76 adheres to or falls on the third filter unit 76 and is collected in the second dust container 72. As the third filter portion 76, for example, a medium performance air filter having a medium particle collection rate mainly for particles having a particle size smaller than 5 μm as defined in JIS Z 8122 (2000) is suitably used. In particular, a quasi-HEPA filter (high performance filter) having a particle collection rate of 95% or more for 0.3 μm particles is preferable. The third filter unit 76 is disposed so as to overlap the second filter unit 75 disposed in a substantially horizontal state in the second dust collecting body 71 in a substantially horizontal state. Therefore, the dust that has passed through the second filter portion 75 on the lower surface side of the third filter portion 76 is easily blocked and dropped.

  The HEPA filter part 77 is a filter having a particle collection rate of 99.97% or more with respect to 0.3 μm particles as defined in JIS Z 8122 (2000), and passed without being removed by the third filter part 76. Block and remove dust. In particular, in this HEPA filter portion 77, asbestos can be removed due to excellent particle collection performance. The dust blocked by the HEPA filter unit 77 adheres to or falls on the HEPA filter unit 77 and is collected in the second dust container 72. Further, the HEPA filter unit 77 is disposed so as to overlap with the third filter unit 76 disposed in a substantially horizontal state in a substantially horizontal state. Therefore, the dust that has passed through the third filter unit 76 on the lower surface side of the HEPA filter unit 77 is easily blocked and dropped.

  Since the second dust collecting unit 70 is configured by continuously arranging the second filter unit 75, the third filter unit 76, and the HEPA filter unit 77, the internal structure is simple, and each filter unit is used for maintenance. 75, 76, and 77 can be easily exchanged together, and management is easy.

  Next, the dust collection procedure of the coating material by the dust collector 10 will be described. As shown in FIG. 2, a cover body 31 of the cutting unit 30 is covered with a cutting portion of a workpiece W such as a wall surface of a building, and suction by the suction device 40 is started and the cutting main body 35 is rotated. Drive. By the rotation of the cutting body 35, the cutting blade 36 cuts the coating material of the workpiece W, and dust is generated. The dust thus generated is sucked from the dust discharge part 33 of the cutting part 30 to the first suction hose 21 by the suction of the suction device 40.

  Air containing dust sucked into the first suction hose 21 is introduced into the first dust collection body 61 from the first suction opening 63 of the first dust collection portion 60 as shown in FIG. The filter 66 passes from the lower surface side to the upper surface side and is discharged from the first discharge opening 64 to the second suction hose 22. At this time, since the dust collision member 65 is disposed in front of the first suction opening 63, the air containing the dust blown from the first suction opening 63 collides with the dust collision member 65, and a small piece. And the like are bounced downward and collected in the first dust container 62.

  On the other hand, dust that is smaller than a small piece and does not fall even when colliding with the dust collision member 65 is sucked together with the sucked air toward the first filter portion 66, and relatively large dust is generated by the first filter portion 66. It is blocked and collected in the first dust container 62. At this time, since the first suction opening 63 is provided on the lower side of the first filter portion 66 arranged substantially horizontally, dust is blocked on the lower surface side of the first filter portion 66 and easily falls. Become. As described above, in the first dust collection unit 60, the large dust is appropriately collected in the first dust storage unit 62 by the dust collision member 65 and the first filter unit 66.

  Subsequently, the air containing the dust passing through the first filter part 66 and discharged to the second suction hose 22 is introduced into the second dust collection body 71 from the second suction opening 73 of the second dust collection part 70. Then, it passes from the lower surface side of the second filter portion 75 to the upper surface side of the HEPA filter portion 77 and is discharged from the second discharge opening 74 to the third suction hose 23. At this time, the dust-containing air is almost completely blocked by the second filter part 75, the third filter part 76, and the HEPA filter part 77 that are continuously arranged. That is, fine dust (for example, a particle size of 5 μm or more) that has not been collected by the first dust collection portion 60 in the second filter portion 75 is blocked, and finer dust (for example, a particle size of less than 5 μm, for example) is blocked in the third filter portion 76. ) Is continuously blocked, and the remaining dust (for example, a particle size of 3 μm or more) is blocked in the HEPA filter portion 77. In particular, the HEPA filter part 77 can also appropriately remove asbestos. Thus, the air that has passed through the second dust collecting unit 70 is in a clean state in which dust is almost completely removed. In addition, when work is completed or when dust is excessively collected, dust is appropriately discharged from each dust discharge section (not shown) of the first dust collection section 60 and the second dust collection section 70. To be disposed of.

  As illustrated and described above, the dust collector of the present invention is a device that sucks dust generated by cutting by a cutting unit from a cutting unit through a suction hose by a suction device and collects the dust in the dust collecting unit. The first dust collecting unit, the second filter unit, and the third filter unit that collect dust having a relatively large particle size in the first dust containing unit between the dust impinging member and the first filter unit. And a second dust collecting unit that continuously arranges the HEPA filter unit and collects fine dust in the second dust container. Therefore, the structure of the 1st dust collection part and the 2nd dust collection part is simplified, maintenance becomes easy, and the dust collector which it is easy to manage can be provided.

  Moreover, in the dust collector of this invention, dust removal is performed in steps by the 1st dust collection part and the 2nd dust collection part. In particular, in the first dust collecting part, the dust colliding member and the first filter part block the dust step by step, and the second filter part, the third filter part, and the HEPA filter part continuously arranged in the second dust collecting part, The dust is continuously blocked by. Therefore, it removes in order from a dust with a large particle size, and can appropriately block dust with a particle size optimal for the performance of each filter. As a result, clogging of the filter having high collection performance is suppressed and the suction force is hardly lowered, and it is possible to work while maintaining excellent dust collection performance for a long time.

  The dust collector of the present invention has a simple structure and is easy to manage, and has excellent dust collection performance. Therefore, it is promising as an alternative to the conventional dust collector.

DESCRIPTION OF SYMBOLS 10 Dust collector 20 Suction hose 21 1st suction hose 22 2nd suction hose 23 3rd suction hose 30 Cutting part 31 Cover body 32 Brush 33 Dust discharge part 35 Cutting main body 36 Cutting blade 37 Drive apparatus 38 Gripping part 39 Power cord 40 Suction device 50 Dust collection part 51 Separation sheet 60 First dust collection part 61 First dust collection body 62 First dust storage part 62a Bottom face 62b Inclined surface 63 First suction opening part 64 First discharge opening part 65 Dust collision member 65a Collision Surface 66 First filter portion 69 First wheel member 70 Second dust collection portion 71 Second dust collection main body 72 Second dust container 72a Bottom surface 72b Inclined surface 73 Second suction opening portion 74 Second discharge opening portion 75 Second filter Part 76 Third filter part 77 HEPA filter part 79 Second wheel member W Workpiece

Claims (3)

The suction material is connected to the other end of the suction hose via a dust collecting part and connected to the cutting part that cuts the coating material of the building. A dust collecting device that sucks the dust from the cutting portion through the suction hose by the suction device and collects the dust in the dust collecting portion,
The dust collecting part is
The sucked dust collides with the dust colliding member and is dropped, and the dust that has not fallen by the dust colliding member is removed by being blocked by the first filter part, and collected in the first dust accommodating part. 1 dust collection part,
A second filter part capable of blocking finer dust than the first filter part, a third filter part capable of blocking finer dust than the second filter part, and a HEPA filter part are continuously disposed, A second dust collecting part that blocks and removes the dust that has passed through the first dust collecting part by the second filter part, the third filter part, and the HEPA filter part, and collects dust in the second dust container part; A dust collector characterized by that.   A first suction opening for sucking dust from the cutting part is formed below the first filter part, and air in the first dust collecting part is discharged above the first filter part. The dust collector according to claim 1, wherein a first discharge opening is formed.   A second suction opening for sucking dust that has passed through the first dust collecting part is formed below the second filter part, and in the second dust collecting part above the HEPA filter part. The dust collector according to claim 1 or 2, wherein a second discharge opening for discharging air is formed.

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