JP4125766B2 - Mist and dust collector - Google Patents

Mist and dust collector Download PDF

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Publication number
JP4125766B2
JP4125766B2 JP2006272909A JP2006272909A JP4125766B2 JP 4125766 B2 JP4125766 B2 JP 4125766B2 JP 2006272909 A JP2006272909 A JP 2006272909A JP 2006272909 A JP2006272909 A JP 2006272909A JP 4125766 B2 JP4125766 B2 JP 4125766B2
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filter
mist
dust
collection
air
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JP2008086955A (en
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義展 伊藤
利明 加藤
康名 横井
昌史 竹田
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株式会社アンレット
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The present invention is suitable for collecting fume generated during arc welding work, fine dust and mist generated from a cutting machine / polishing machine, etc., and carbon / oil / sand generated during road cleaning by a road sweeper. And a dust collecting device.

At the time of arc welding of a welded iron material coated with a rust preventive oil / paint, a fine fume of 100 angstrom class or a fine fume of 0.01 μm to 1 μm is generated. In a general filter type dust collector, a filter having a mesh of 0.1 μm to 0.5 μm is used, but clogging is likely to occur. For this reason, turbo blowers and air ejectors (air
The filter is cleaned by adsorbing the fume oil adhering to the collecting surface by injecting the lime powder etc. mixed with the pressure air generated by the ejector) onto the collecting surface of the filter. A new fume recovery method has been developed. Moreover, although the system which gives a vibration to a filter with a vibrating body and peels a fume from a collection surface is also employ | adopted, it is difficult to fully eliminate clogging.

Japanese Patent No. 3316476 discloses a “filter cleaning device in a fume recovery machine”. This device is for the applicant of the present application, and the pressure is applied to the back side of the collection surface of the filter while rotating the rotary nozzle arranged inside the filter by the air action generated by the reverse rotation operation by the roots type blower. The filter is cleaned by ejecting air.

  However, in the conventional filter type dust collector, clogging due to oil-containing fume and viscous fume has not been sufficiently eliminated, and it has been difficult to maintain the collection performance in a good state.

  Next, as a conventional mist collection device, various types of structures such as a filter method, a demister method, a trumpet member method, a collision plate method, and an electric dust collection method are known. For example, Japanese Patent Application Laid-Open No. 11-179122 discloses an intake unit that sucks a gas contaminated with oil mist, a capture unit that captures oil mist from a gas sucked from the intake unit with a porous filter, and a trap unit that captures the gas. An oil mist collecting device is disclosed that includes an oil storage part that stores the aggregated oil mist and an exhaust part that discharges the gas from which the oil mist has been removed.

  Japanese Patent Laid-Open No. 2000-296305 discloses that a permeable member is provided at the entrance of a hood disposed above a mist generating section, and the mist is attached to the permeable member by the operation of a suction device connected to the suction pipe of the hood. A mist collecting device for sucking and collecting an object is disclosed.

  In Japanese Patent Laid-Open No. 9-47617, a collection plate having a porous material layer provided on the surface on which mist collides is provided in the collection chamber, and the mist-containing air guided to the collection chamber collides with the collection plate. A mist removing device that collects mist is disclosed.

  Further, Japanese Patent No. 28888684 discloses that in a path for exhausting high-temperature exhaust gas to the outside air, the exhaust gas is brought into contact with water circulating in the sealed chamber, and the temperature of the exhaust gas decreases due to the heat of vaporization. A method for cooling and purifying combustion exhaust gas in which solid particles such as carbon powder in the gas and harmful components such as carbon monoxide are decomposed and adsorbed on water is disclosed.

As described in the above-mentioned patent publications, mist has various properties such as water mist, oil mist, coarse mist (particle size: about 20 μm or more) and fine mist (particle size). : About 1 to 0.01 μm or less). For this reason, the collection system as described above is employed corresponding to the type of mist. In any case, if the generated mist is not processed efficiently, the working environment is comfortable, the safety of the worker is safe, the machine and equipment that generate the mist operate normally, and the surrounding buildings are contaminated. It can be said that it is difficult to prevent such as.
Japanese Patent No. 3316476 Japanese Patent Laid-Open No. 11-179122 JP 2000-296305 A Japanese Patent Laid-Open No. 11-19775 Japanese Patent Laid-Open No. 9-47617 Japanese Patent No. 28888684

An object of the present invention is to provide a mist and dust collecting device suitable for collecting fine fumes, mist, and the like generated from fumes generated during arc welding work, a cutting machine, a polishing machine, and the like.

In order to achieve the above object, according to the first aspect of the present invention, the case of the collecting unit and the inside of the suction pipe are held at a negative pressure by the operation of the roots type blower, and the negative pressure action causes the ambient air to be In the mist and dust collection device configured to remove the mist or dust sucked together with the filter provided in the case and discharge the air that has passed through the filter to the outside ,
In the case of the collecting unit, an end cover provided with an outlet having a check valve is attached to one open end of the case body, and a housing in which a motor device is attached to the other open end of the case body. A rotary filter as a filter is attached to the tip of a rotary shaft that is mounted on the housing so as to freely rotate and face the case, and the rotary filter has a mesh of 0.3 μm to 1 μm. A filter material in which a large number of wrinkles are continuously formed in a zigzag shape by a non-woven fabric is attached to the outer periphery of the porous cylindrical core material, and forward and reverse operations are performed via a suction pipe at the outlet of the collection unit. A suction valve is connected to the suction side of the Roots type blower, and a check valve is installed at the air inlet of the air blow nozzle arranged toward the outer peripheral surface of the rotary filter. The supply pipe is connected to the suction pipe and the pressure air generated by the reverse operation of the roots blower is blown from the air blow nozzle to the rotary filter to remove dust from the filter. And a recovery tank for storing dust removed from the rotary filter is provided in a discharge pipe provided in the case body .

In order to achieve the same object, the invention described in claim 2 is the mist and dust collecting device according to claim 1, wherein the collection bag can be attached to and detached from the outlet of the branch pipe branched from the discharge pipe. It is characterized by providing .

(Invention of Claim 1)
This mist and dust collection device is applied to welded iron during arc welding work by a compact combination of a collection unit using a rotary filter and a roots blower that can switch between forward and reverse rotation. Further, it is possible to efficiently collect fine fumes and mist generated from a rust preventive oil or a fumes having viscosity generated from a paint, a cutting machine, a polishing machine, or the like. Furthermore, since dust attached to the filter can be removed by blowing pressure air from the air blow nozzle onto the rotary filter, the filter can be maintained in a good state.

(Invention of Claim 2)
Since this mist and dust collection device is provided with a collection bag for storing dust in a detachable manner on the collection unit, it is easy to perform post-treatment of dust.

The best mode of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory view of a mist and dust collecting device of the present invention, FIG. 2 is a longitudinal side view of a collecting unit, FIG. 3 is a longitudinal front view of a rotary filter, and FIG. 4 is a convex portion of the rotary filter. illustration, FIG. 5 is an explanatory view showing a state in which the trap mist and dust is applied to the grinding machine of the present invention, FIG. 6 is cleaning the collecting device of the mist and dust of the invention in road by sweepers FIG. 7 is an explanatory view of the separation tank.

As shown in FIG. 1, the mist and collecting apparatus A dust of the present invention, the tip of the suction pipe 5 fumes having a viscosity caused by welding, the mist and dust generated from the polishing machine or the like together with the surrounding air The suction unit 6 is provided with a suction hood 6 to collect the mist and dust , and the inside of the case 11 of the collection unit 10 is set to a negative pressure and the air passing through the unit is discharged to the outside. And a roots type blower 55 to be mounted on a frame 1 having casters 2. Reference numeral 7 denotes a check valve interposed in the suction pipe 5.

The case 11 of the collection unit 10 includes a cylindrical case body 12, an end cover 16, and a housing 19. The end cover 16 is provided with an outlet 17 a provided with a check valve 18, and is attached to one open end 12 a of the case body 12. The housing 19 is attached to the other open end 12 b of the case body 12. An inflow port 13 for connecting the suction pipe 5 and a dust discharge pipe 14 are provided in the body portion of the case body 12.

  An annular seal 20 and a ball bearing 21 are sequentially attached to the center hole of the housing 19 on the inner side on the case body 12 side. Has been inserted.

  The casing 24 of the motor device 23 is attached to the small diameter flange 19 b of the housing 19. The rotating shaft 26 of the motor device 23 is rotatably supported by a ball bearing 25 built in the casing 24 and the ball bearing 21, and is arranged so that the tip end portion 26 a faces the case 11. .

Reference numeral 31 denotes a rotary filter that is detachably provided at the distal end portion 26 a of the rotary shaft 26. As shown in FIG. 3, in this filter 31, a rough and soft oil-resistant polypropylene material 33 is attached to the outer periphery of a porous cylindrical core material 32 such as a punching metal, and a cylindrical filter material 34 is further formed thereon. , And both ends of the cylindrical core member 32, the oil resistant polypropylene member 33 and the filter member 34 are sandwiched between the face plates 38 and 40 and fixed to the rotary shaft 26.

The filter material 34 is a material capable of collecting fine fume dust of 100 angstrom class, and a large number of ridges 35 are continuously formed in a zigzag shape by a nonwoven fabric of mesh 0.3 μm to 1 μm. (FIGS. 3 and 4). The size of the filter material 34 is about 200 to 500 mm in outer diameter and about 200 to 500 mm in length.

  One face plate 38 is fixed to the rotary shaft 26 by tightening a nut 28 screwed into the rotary shaft 26 in a state where a hole formed in the center portion is loosely fitted to the rotary shaft 26 and the bush 27 is fitted. Yes. An inward flange 38a is formed on the outer periphery of the face plate 38, and the convex portion 35a of the filter material 34 is provided so as to be loosely fitted by the inward flange 38a.

  The other face plate 40 is fixed to the rotary shaft 26 by inserting a shaft cylinder 41 formed on the back side of the center portion into the rotary shaft 26 and tightening a bolt 44. Around the shaft cylinder 41, four holes 42 are provided as shown in FIG. An inward flange 40a is formed on the face plate 40, and the convex portion 35a of the filter material 34 is provided so as to be loosely fitted by the inward flange 40a. A cylindrical portion 43 formed on the front side of the center portion of the face plate 40 is inserted into the large-diameter hole 17b of the end cover 16 in a substantially contact manner. A plurality of annular grooves 17 c are formed in the large-diameter hole 17 b, and a labyrinth seal is formed by the annular grooves 17 c and the outer peripheral surface of the cylindrical portion 43.

  The rotary filter 31 is provided to be driven and rotated by the motor device 23 at 500 to 1000 revolutions per minute.

  A recovery bag 45 for recovering a part of the dust removed from the rotary filter 31 is detachably provided at the outlet 14b of the branch pipe 14a branched from the fume discharge pipe 14. Reference numeral 15 denotes a check valve interposed in the branch pipe 14a. A box-type recovery tank 46 is provided so as to be attachable to the fume discharge pipe 14. A suction side of a Roots blower 55 is connected to the outlet 17 a of the collection unit 10 through a suction pipe 50.

  Reference numeral 51 denotes an air blow nozzle for cleaning the rotary filter 31. The air blow nozzle 51 is arranged with several outlets facing the outer peripheral surface of the rotary filter 31. An air inlet 51 a of the air blow nozzle 51 is connected to the suction pipe 50 via a supply pipe 52. A check valve 53 is provided in the supply pipe 52.

The roots type blower 55 uses a three-leaf type that can switch between forward rotation and reverse rotation operation. An exhaust tank 56 is connected to the exhaust side of the roots blower 55. Reference numeral 57 denotes an exhaust port of the exhaust tank 56.
The mist and dust collection device A of the present invention is configured as described above.

Next, the operation when the mist and dust collecting apparatus A of the present invention is used for collecting fumes generated during arc welding work will be described.
(1) When arc welding is performed on the weld iron b coated with the antirust oil and paint placed on the gantry a, viscous fumes are generated together with 100 angstrom-class fume dust.
(2) In the mist and dust collecting device A, the collection unit 10 and the suction pipe 5 are held at a negative pressure by the forward rotation operation of the Roots blower 55, and the fume generated in (1) by the negative pressure action. Flows from the suction hood 6 together with the surrounding air through the suction pipe 5 into the collection unit 10.
(3) In the collection unit 10, the rotation of the rotary filter 31 is controlled by the motor device 23 within a range of 500 to 1000 revolutions per minute. Thus, the fumes having viscosity contained in the air sucked into the case 11 are spun off by the centrifugal force action of the rotary filter 31 and separated and removed.
(4) The fumes separated and removed by the rotary filter 31 fall below the case 11 and accumulate in the collection tank 46.
(5) The air dried by the collection unit 10 passes through the suction pipe 50 and the roots type blower 55 and is discharged from the exhaust port 57 of the exhaust tank 56 to the outside.

Further, by switching the operation of the Roots-type blower 55 from normal rotation to reverse rotation, air is sucked from the exhaust side of the blower 55 and the pressure is increased and the air is introduced into the air blow nozzle 51 through the supply pipe 52. . Then, the rotary filter 31 is washed by the pressure air ejected from the air outlet of the air blow nozzle 51, and the fumes removed by the filter 31 fall into the lower discharge pipe 14 and are stored in the recovery bag 45 and the recovery tank 46. The Note that when the rotary filter 31 is cleaned, it is preferable to set the rotation speed of the filter 31 to about 100 times per minute.

The mist and dust collection apparatus A of the present invention can also be applied to collection of fine dust and mist generated from the polishing machine d as shown in FIG. In the figure, e is a disk-shaped grindstone that is rotatably provided in the polishing machine d, and f is a workpiece.

As shown in FIG. 6, the mist and dust collecting device A of the present invention can also be applied to collecting carbon, oil, dust, and the like generated when a road surface is cleaned by a road sweeper. In the figure, h is a rotating brush provided in a road sweeper (not shown).

When there is a possibility that a large amount of dust or the like may be mixed during the cleaning of the road surface, they are sucked into the collection unit 10 to cause clogging of the rotary filter 31. Therefore, a mist and dust collection device A A separation tank 60 shown in FIG. 7 is preferably interposed between the suction pipe 5 and the collection unit 10.

The separation tank 60 is provided so that a lid 62 is detachably provided in an opening 61 a above the tank body 61, and the lid 62 is fixed to the tank body 61 with a bolt 63. A trumpet-shaped member 65 formed so as to expand toward the bottom of the tank main body 61 and an inlet pipe 67 connected to the suction pipe 5 are provided at the center of the lid 62. The outlet pipe 66 of the trumpet member 65 is connected to the inlet 13 of the collection unit 10.

(Experiment)
About the mist and dust collection device A of the present invention, the collection performance of the fumes (wet fume) having viscosity generated during the welding operation of the welded iron material coated with the rust preventive oil, and the root type blower from the suction hood With respect to the pressure loss (pressure loss) between the suction ports, an experiment including Comparative Examples 1 to 3 was performed under the following conditions. The results are shown in the graphs of FIGS.

(Invention)
Collection unit Filter: Filter material uses synthetic nonwoven fabric Mesh 0.3μm
Diameter 200mm x length 200mm
Filter rotation speed: 1000rpm
Motor device output: 0.4 kW
Roots-type blower: Diameter 50mm x Output 1.5kw, Rotating speed 2500rpm
Discharged air amount 1.5 m 3 / min Wet fume generation amount: about 20 mg / m 3
However, for the mist and dust collecting apparatus A of the present invention, the cleaning operation was repeated with an air blow nozzle using wet fume.

The result of the experiment of the present invention is shown in FIG. The filter pressure loss after 200 minutes of operation was -17 kPa, and there was no large pressure fluctuation during 2800 minutes of operation. The fume concentration measured on the exhaust side of the roots-type blower transitioned to about 0.02 mg / m 3 or less, and it was confirmed that a good collection effect can be obtained.

  About the comparative example 1, it experimented about the dry fume which generate | occur | produces at the time of welding operation of the weld iron material in which the antirust oil is not applied. The filter was washed by air blowing from the inside of the filter.

The result of the experiment of Comparative Example 1 is shown in FIG. The filter pressure loss after 160 minutes of operation was −8.5 kPa, and the fume concentration was 0.025 mg / m 3 .

In Comparative Example 2, an experiment was conducted on wet fume. The filter was washed by air blowing from the inside of the filter.
Wet fume generation amount: about 10 mg / m 3

  The result of the experiment of Comparative Example 2 is shown in FIG. The filter pressure loss after 240 minutes of operation was -10.5 kPa.

  For Comparative Example 3, an experiment was conducted on wet fume. The filter was washed by air blowing from the outside of the filter. In addition, as the filter material, a filter member in which slits having a length of 30 mm were formed at intervals of 20 mm on the convex portion 35a of the flange 35 of the filter material 34 used in the present invention was used.

  The result of the experiment of Comparative Example 3 is shown in FIG. The filter pressure loss after 470 minutes of operation was -11 kPa. It is considered that clogging of the filter material is reduced by the slight vibration of the flange 35 caused by the slit of the filter material.

Explanatory drawing of the mist and dust collection device of the present invention Vertical side view of collection unit Longitudinal front view of rotary filter Explanatory drawing of convex part of rotary filter Explanatory drawing which shows the state which applied the mist and dust collection apparatus of this invention to the grinding machine Explanatory drawing which shows the state which applied the mist and dust collection apparatus of this invention to the cleaning of the road surface by a road sweeper Illustration of separation tank Graph showing experimental results of collection performance and pressure loss in the collection device of the present invention The graph which shows the experimental result of the collection performance and pressure loss in the collection apparatus of Comparative Examples 1-3

Explanation of symbols

A ... mist and dust collecting device 5 of the present invention 5 ... suction pipe 10 ... collecting unit 11 ... case
12 ... Case body
16 ... End cover
DESCRIPTION OF SYMBOLS 19 ... Housing 23 ... Motor apparatus 26 ... Rotating shaft 31 ... Rotary filter 34 ... Filter material 45 ... Collection bag 46 ... Collection tank 51 ... Air blow nozzle 55 ...・ Roots blower

Claims (2)

  1. By operating the Roots-type blower, the case of the collection unit and the inside of the suction pipe are held at a negative pressure, and the mist or dust or mist and dust sucked together with the surrounding air from the suction pipe by the negative pressure action In the mist and dust collecting device configured to be removed by a filter provided in the interior and to discharge the air that has passed through the filter to the outside ,
    In the case of the collecting unit, an end cover provided with an outlet having a check valve is attached to one open end of the case body, and a housing in which a motor device is attached to the other open end of the case body. A rotary filter as a filter is attached to the tip of a rotary shaft that is mounted on the housing so as to freely rotate and face the case, and the rotary filter has a mesh of 0.3 μm to 1 μm. A filter material in which a large number of wrinkles are continuously formed in a zigzag shape by a non-woven fabric is attached to the outer periphery of the porous cylindrical core material, and forward and reverse operations are performed via a suction pipe at the outlet of the collection unit. A suction valve is connected to the suction side of the Roots type blower, and a check valve is installed at the air inlet of the air blow nozzle arranged toward the outer peripheral surface of the rotary filter. The supply pipe is connected to the suction pipe and the pressure air generated by the reverse operation of the roots blower is blown from the air blow nozzle to the rotary filter to remove dust from the filter. A collection device for collecting mist and dust , wherein a collection tank for storing dust removed from the rotary filter is provided in a discharge pipe provided in the case body .
  2. The mist and dust collecting device according to claim 1, wherein a collection bag is detachably provided at an outlet of the branch pipe branched from the discharge pipe .
JP2006272909A 2006-10-04 2006-10-04 Mist and dust collector Active JP4125766B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006272909A JP4125766B2 (en) 2006-10-04 2006-10-04 Mist and dust collector

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2006272909A JP4125766B2 (en) 2006-10-04 2006-10-04 Mist and dust collector
KR1020060134827A KR20080031605A (en) 2006-10-04 2006-12-27 Dust collector
US11/646,676 US20080083333A1 (en) 2006-10-04 2006-12-28 Dust collector
CN2007100083485A CN101157089B (en) 2006-10-04 2007-01-29 Dust collector

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JP4125766B2 true JP4125766B2 (en) 2008-07-30

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JP5618159B2 (en) * 2008-05-19 2014-11-05 クランゴス,チャールズ System and method for welding removal, cutting and gouging with vacuum removal of by-products
ITMI20081411A1 (en) * 2008-07-30 2010-01-31 C M V Di Villa Alberto Maria A device for cleaning a filter cartridge in vacuum cleaners and the like.
US8545209B2 (en) 2009-03-31 2013-10-01 Microjet Technology Co., Ltd. Three-dimensional object forming apparatus and method for forming three-dimensional object
CN101829870A (en) * 2010-06-04 2010-09-15 欧朝旭 Welding fume collecting device and method capable of automatically tracking and positioning welding point
CN102653023A (en) * 2012-05-25 2012-09-05 无锡市豫达换热器有限公司 Anti-smoke type automatic welding machine
CN102728593B (en) * 2012-05-29 2015-05-06 中国海洋石油总公司 Smoke dust removal device in electric welding shed
CN102886184B (en) * 2012-08-29 2014-04-30 中北大学 Purifying device for welding fume
FR2997743B1 (en) * 2012-11-08 2016-04-29 Tallano Tech Particle captrating brake assembly
JP5701925B2 (en) * 2013-04-12 2015-04-15 株式会社アンレット Mist and dust collector
CN103353238B (en) * 2013-07-09 2014-12-10 曲沃县民政福利企业有限公司 Multistation multi-angle dust remover front end device
GB2524019B (en) * 2014-03-11 2017-01-11 Hoover Ltd Cyclonic separation device
CN104209298A (en) * 2014-09-10 2014-12-17 太仓顺峰体育用品有限公司 Highly-efficient vertical thread end sucker machine
CN106140729A (en) * 2015-04-13 2016-11-23 天工爱和特钢有限公司 A kind of movable high-speed steel mold fast dust-absorbing device
FR3046644B1 (en) * 2016-01-13 2019-04-12 Tallano Technologie Particle captrating brake assembly with deflector
CN105841212B (en) * 2016-06-21 2017-10-20 长沙玄德环保科技有限公司 A kind of integrated emission-reducing system of oil smoke
KR101913409B1 (en) * 2016-12-21 2018-10-31 주식회사 포스코 Swarf treatment plant of strip grinding device
CN107127203A (en) * 2017-03-31 2017-09-05 苏州亚思科精密数控有限公司 Flue gas purifying method for milling machine
CN206837764U (en) * 2017-06-16 2018-01-05 郭彩祥 Penetrate suction instrument and penetrate suction device
CN109158398A (en) * 2018-06-25 2019-01-08 浙江自由家居用品制造有限公司 Dust collecting installation is used in a kind of weaving
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CN101157089A (en) 2008-04-09
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