JP2010279910A - Apparatus for removing oil mist - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for removing oil mist with increased collection efficiency and maintenability. <P>SOLUTION: The apparatus 1 for removing oil mist includes a casing 2 having an air suction port 6 and an exhausting port 13, first, second, third and fourth treatment parts 7, 8, 11, 12, and an oil mist recovering part 14 set at a bottom of the casing 2. The first treatment part 7 has an impingement plate 24 disposed to face to the air suction port 6, and the second treatment part 8 has a cylindrical wall 28 centrifugally rotating air 10 having passed through the first treatment part 7. The third treatment part 11 includes a suction fan 40 sucking the air 10 in the second treatment part 8 and a collection unit 41 including a collection cylinders 52A, 52B consisting of a perforated plate and surrounding the side face of the suction fan 40, and the fourth treatment part 12 includes a straightening member 60 straightening and exhausting the air having passed through the third treatment part 11 formed of the perforated plate from an exhausting port 13 to the outside. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an oil mist removing apparatus that collects and removes foreign matters such as oil mist that is scattered and floats in the air, fine cutting powder, and dust, thereby purifying the air.

  As this type of oil mist removing apparatus used in factories and the like, for example, those disclosed in Patent Documents 1 to 3 are known.

  The oil mist removing device disclosed in Patent Document 1 is located on the collision plate, on the upstream side of the impeller, on the inlet side collector that primarily collects and removes the oil mist, on the downstream side of the impeller. And an outlet collector for secondarily collecting and removing the remaining oil mist. The inlet-side collector comprises a large number of vertical or inclined independent air paths, thereby constituting a passage assembly that circulates suction air from the upper end opening to the lower end opening of the air path. The outlet collector is composed of a fibrous multilayer structure filter.

  The mist collector device described in Patent Document 2 includes a mist processing plate that is rotatably supported on the suction side of the casing, a motor that rotates the mist processing plate, and suction means that is provided so as to face the mist processing plate. It has. The mist processing plate is composed of one to several processing plates having innumerable pores, and performs separation of foreign matters (floating dust), oil particleization, and oil and water separation. .

  The oil mist removing apparatus described in Patent Document 3 is provided with first to fourth processing parts inside a casing having a suction port and a discharge port, and air containing oil mist sucked into the casing from the suction port. The oil that has been processed and separated by the first to fourth processing units is recovered in the recovery unit, and the clarified air is exhausted from the outlet to the outside of the apparatus. The first processing unit includes an umbrella-shaped collision plate provided in the central passage of the link. The second processing unit is composed of a punching plate and a first porous member. The third processing unit includes an annular punching plate that surrounds the suction fan and a second porous member. The fourth processing unit is composed of one or several filters impregnated with activated carbon, zeolite, scientific drugs, chemicals, or the like.

JP 2006-88050 A JP 2008-155093 A JP 2005-152805 A

  However, since the oil mist removing device described in Patent Document 1 uses a filter for the outlet collector, if the filter is clogged, the air cleaning efficiency is reduced, and it is necessary to replace it with a new filter. Therefore, there was a problem that the running cost was high.

  Since the mist collector apparatus described in Patent Document 2 employs a centrifugal separation method, it has an advantage that oil and particles can be satisfactorily separated, but 1 to several having innumerable pores. Since a single mist processing plate is used, the pores are easily clogged with the cutting powder, and there is a problem that the efficiency of the mist processing is low and the maintenance of the processing plate is troublesome as in the above-mentioned Patent Document 1. .

  The oil mist removing apparatus described in Patent Document 3 has a large number of punching plates and porous plates, which is a major obstacle to reducing the manufacturing cost, and the maintenance thereof is troublesome. Further, since the filter is used, there is a problem similar to that of the oil mist removing device disclosed in Patent Document 1.

  The present invention has been made to solve the above-described conventional problems, and an object of the present invention is to provide an oil mist removing device that improves the collection efficiency and is excellent in maintainability.

  To achieve the above object, the present invention provides a housing having an air inlet and an air outlet, first, second, third, and fourth processing units provided in the housing, and a bottom portion of the housing. A mist collecting section provided on the first processing section, wherein the first processing section includes a collision plate disposed to face the intake port, and the second processing section includes the first processing section. The third processing section includes a suction fan for sucking air in the second processing section and a collection tube made of a perforated plate, and has a side surface of the suction fan. And a surrounding air collecting unit, and the fourth processing unit includes an air conditioning member that is formed of a perforated plate and conditioned air that passes through the third processing unit and exhausts the air from the exhaust port to the outside of the housing. Is.

  Moreover, the present invention is the above invention, wherein the collection tube has a number of mist passage holes long in the axial direction.

  Further, the present invention is the above invention, wherein the suction fan is a turbo fan that sucks outside air from the axial direction and discharges it outside in the radial direction.

  Further, according to the present invention, in the above invention, the housing includes a box-shaped housing body whose both ends are open, and a front door and a back cover that respectively close the front-side opening and the back-side opening of the housing body. The front door includes the intake port and the first and second processing units, and the housing body includes the exhaust port and the third and fourth processing units.

  Further, the present invention is the above invention, wherein the first processing section has an opening that opens to one side by connecting a part of the outer periphery of the collision plate and a side plate that connects a back surface of the front door. The air guided into the first processing unit from the intake port is exhausted from the opening by striking the collision plate, and is centrifugally rotated along the cylindrical wall when guided to the second processing unit. is there.

  Moreover, this invention is the said invention. WHEREIN: The said collection unit is detachably accommodated in the said 3rd process part, and is pressed and supported by the said front door.

  In the present invention, the back cover presses and supports one end of the air conditioning member.

  Further, the present invention is the above invention, wherein a partition wall is provided at a boundary between the third and fourth processing units, and a motor for driving the suction fan is attached to the partition wall at the center, and the partition A large number of radially long passage holes are formed between the wall and the collection wall to allow the third and fourth processing portions to communicate with each other.

  Moreover, the present invention is the above invention, wherein the mist collecting section has a cutting powder capturing section extending into the second processing section on a side wall on the rotational direction side of the suction fan.

  Furthermore, the present invention is the above invention, wherein the motor is located in the fourth processing portion, the air conditioning member is formed in a cylindrical shape, and is detachably disposed in the fourth processing portion. It surrounds.

The first processing unit of the present invention uses a relatively large and heavy cutting powder contained in the air sucked into the housing from the intake port or a particulate oil mist that has become larger in the process of being guided to the intake port as a collision plate. Make a collision and hold temporarily. The collision plate has an air flow generation function of centrifugally rotating the air flow that has passed through the first processing unit along the cylindrical wall. The oil mist that hits the impingement plate of the first processing unit is swept by the air flow and centrifugally rotated along the cylindrical wall of the second processing unit, and the relatively heavy oil mist that has moved to the outside is captured by the second processing unit. Is done. The air flow containing relatively small cutting powder and oil mist that is not captured by the second processing unit is guided to the third processing unit by a suction fan while rotating centrifugally, and fine cutting powder and oil mist are collected by the collection unit. Captured and removed.
Fine oil mist moves along with the flow of air, but when it collides with an object at high speed, the oil mist collides with each other, the particle size gradually increases, and fine cutting powder etc. It will be taken into the mist. In order to realize this effect, the oil mist collecting efficiency is improved as the resistance of air flow is smaller and the number of collisions is larger. Since the collection unit includes a collection cylinder made of a perforated plate, the efficiency of oil mist collection can be improved by the air flow colliding with the hole edge of the collection cylinder.
The air conditioning member of the fourth processing unit is further cleaned by removing, cleaning, and removing foreign matters such as fine oil mist and cutting powder remaining in the air passing through the third processing unit by the air conditioning member made of a perforated plate. Air is conditioned and exhausted from the exhaust port to the outside of the housing.

  Further, in the present invention, since the hole for the mist passage of the collection cylinder is formed as a long hole that is long in the axial direction, the length of the hole edge is longer than that of the circular hole, so that There are many collision surfaces, and the collection efficiency of oil mist can be further improved.

  Further, in the present invention, a large number of long passage holes in the radial direction for communicating the third and fourth processing portions are provided between the partition wall and the collection wall provided at the boundary between the third and fourth processing portions. Since it is provided, the oil mist collection efficiency can be improved and the air resistance can be reduced.

  Further, in the present invention, the collection unit is detachably disposed in the third processing unit, and similarly the air conditioning member is detachably disposed in the fourth processing unit, so that these incorporation and removal operations are easy, When clogged, the running cost can be reduced because it can be easily cleaned by blowing compressed air.

  In the present invention, since the mist collecting part is provided with the cutting powder capturing part extending in the two processing parts, relatively heavy cutting powder and oil mist in the air stream rotating centrifugally along the cylindrical wall are captured. ,Remove.

  Further, in the fourth processing unit, the purified air passes through the air conditioning member and passes through the side surface of the motor, whereby the motor can be cooled.

1 is an external perspective view showing an embodiment of an oil mist removing apparatus according to the present invention. It is a perspective view which shows the state which opened the front door of the oil mist removal apparatus. It is a perspective view which shows the state which removed the back cover of the oil mist removal apparatus. It is a side view of an oil mist removal apparatus. It is a front view of an oil mist removal apparatus. It is sectional drawing of an oil mist removal apparatus. It is a figure which shows a 1st, 2nd process part. It is a perspective view of the principal part of a 3rd process part. (A) is a front view of the suction fan, (b) is a side view of the suction fan. It is an external appearance perspective view of a collection unit. It is a disassembled perspective view of a collection unit. It is a perspective view of a back cover and an air conditioning member. It is a figure which shows the direction of the flow of the air which passes the hole for mist passages of a collection cylinder. It is a figure which shows the direction of the flow of the air which passes the passage hole of a ring.

  1 to 7, the oil mist removing apparatus generally indicated by reference numeral 1 includes a housing 2. The housing 2 includes a substantially cubic housing body 3, and a front door 4 that covers the front-side opening 3 </ b> A of the housing body 3 and a back cover 5 that covers the back-side opening 3 </ b> B. The front door 4 is provided with an air inlet 6 and first and second processing units 7 and 8 that process air 10 outside the housing sucked from the air inlet 6. The casing body 3 includes third and fourth processing sections 11 and 12 for further processing the air 10 processed by the first and second processing sections 7 and 8, and purified air 10 ′ outside the casing 2. An exhaust port 13 for discharging is provided.

  Furthermore, the oil mist removing apparatus 1 includes a mist collecting unit 14 (FIG. 6). The mist collecting unit 14 includes a first collecting unit 14A and a second collecting unit 14B. The first collection unit 14A is provided at the bottom of the front door 4 corresponding to the first and second processing units 7 and 8, and the second collection unit 14B is provided at the bottom of the housing body 3 with the third and third The four processing units 11 and 12 are provided.

  1 to 2 and 4 to 6, the front door 4 includes a substantially square front plate 15, a first cylindrical portion 16 provided on the front surface of the front plate 15, and a front center of the first cylindrical portion 16. And a second cylindrical portion 17 projecting from. The front plate 15 has a center hole 20 (FIG. 2) and a double annular pressing body 21 projecting concentrically on the back surface side, and a right edge on the front end of the housing body 3 by a pair of hinges 18. The left edge is locked to the housing body 3 by a pair of clamp fittings 19 when the cover is closed.

  The first cylindrical portion 16 includes a ring-shaped disk 16A having substantially the same size as the center hole 20 of the front plate 15, and a cylindrical body 16B joined to the outer periphery of the back surface of the disk 16A. A rear end is joined to the front surface of the front plate 15.

  The second cylindrical portion 17 is formed of a cylindrical body having both ends open and having substantially the same inner diameter as the center hole 22 (FIG. 6) of the disk 16A, and a plurality of screws 23 (FIGS. 4 and 5) at the center of the disk 16A. ). The inside of the second cylindrical portion 17 forms the intake port 6 of the first processing portion 7.

  2, 6, and 7, the first processing unit 7 mainly removes foreign matters such as relatively heavy oil mist and cutting powder contained in the air 10 outside the housing sucked from the air inlet 6. Collision plates 24 provided in parallel to the rear side of the front door 4, more specifically on the back side of the disc 16 </ b> A so as to face the intake port 6, in a portion to be temporarily captured and removed, It consists of a plate 16A and a side plate 25 connecting the collision plate 24. The collision plate 24 is formed by punching a metal plate or the like so that one end side is substantially semicircular and the other end side is triangular and the overall shape is substantially bowl-shaped. The slanted side portion 24b intersects at an angle of about 80 ° and the arc-shaped portion 24c of approximately 200 °. The side plate 25 is formed in a substantially C-shaped belt shape, and connects the outer peripheral portion excluding the oblique side portion 24b of the collision plate 24, that is, the bottom surface portion 24a and the arc-shaped portion 24c, to the back surface of the disc 16A. For this reason, the first processing unit 7 has an opening 26 that opens to the side of the oblique side 24 b in FIG. 2, and the first and second processing units 7 and 8 communicate with each other through the opening 26. Since the oblique side 24b is inclined downward in FIG. 7 in the opening 26, the distance from the cylindrical body 16B becomes wider from the lower end toward the upper end, thereby opening from the first processing unit 7. The air 10 guided to the second processing section 8 through the section 26 is centrifugally rotated counterclockwise in FIG. 7 along the inner wall (hereinafter referred to as the cylindrical wall) 28 of the cylindrical body 16B.

  The second processing unit 8 centrifugally rotates the air 10 that has passed through the first processing unit 7 along the cylindrical wall 28, such as relatively heavy oil mist or cutting powder that has not been removed by the first processing unit 7. A portion for secondarily separating and removing foreign matter is used as an internal space portion of the first cylindrical portion 16A (except for the first processing portion 7). The centrifugal rotation direction of the air 10 in the second processing unit 8 coincides with the rotation direction of the suction fan 40 described later (counterclockwise direction in FIG. 9A). The centrifugal rotation distance of the air 10, that is, the distance in the counterclockwise direction from the opening 26 to the first recovery part 14A in FIG. 7 is desirably set long in order to increase the collection efficiency of foreign matters such as cutting powder. . In other words, the longer the centrifugal rotation distance is, the more lightweight oil mist and cutting powder can be moved to the outside by centrifugal force, so more oil mist and cutting powder can be removed. It can be recovered by the first recovery unit 14A. In fact, it is considered that a part of the air that is centrifugally rotated near the center rotates more than one turn beyond the first collection unit 14A.

  The first recovery part 14A is a part for recovering foreign matters such as oil mist and cutting powder removed by the first and second processing parts 7 and 8, and is composed of a different-diameter cylindrical body with both ends open, and the cylindrical body 16B. Is provided at a position corresponding to the first and second processing units 7 and 8 at the lower surface of the lower end of the cylindrical body, and a lower end portion projects below the cylindrical body 16A. Further, of the left and right side walls of the first recovery portion 14A, the second process is applied to the upper end of the left side wall 29 (FIG. 7) on the rotation direction side of the suction fan 40, in other words, the centrifugal rotation direction side of the air 10. A cutting powder capturing portion 29a extending into the portion 8 is integrally extended, thereby increasing the collection efficiency of oil mist and cutting powder. That is, when the air 10 is centrifugally rotated in the second processing unit 8, the relatively heavy oil mist and cutting powder gradually move toward the outside due to the centrifugal force with the rotational radius gradually increasing along the cylindrical wall 28. Since it comes to rotate, when it hits the cutting powder capturing part 29a, it adheres or falls and is recovered by the first recovery part 14A. The air 10 processed by the second processing unit 8 is guided into the housing body 3 by the suction fan 40 and further processed by the third and fourth processing units 11 and 12.

  1 to 6 and FIG. 8, the housing body 3 is formed in a box shape formed of a substantially cubic shape that opens forward and backward by a front plate 3a, a top plate 3b, a bottom plate 3c, and a pair of left and right side plates 3d and 3e. The front opening 3 </ b> A is normally closed by the front door 4, and the rear opening 3 </ b> B is closed by the back cover 5. The inside of the housing body 3 is partitioned into two front and rear chambers by a partition wall 36, the front chamber forms the third processing unit 11, and the rear chamber forms the fourth processing unit 12. The upper surface plate 3 b is formed with the exhaust port 13 corresponding to the fourth processing unit 12. A mounting flange 32 is attached to the bottom plate 3c. A terminal box 33 to which a power cord is connected is attached to the right side plate 3d.

  The third processing unit 11 is a part that further captures and removes fine oil and cutting powder remaining in the air 10 and is an inner part surrounded by the collection wall 38. A collection unit 41 is arranged.

  The collection wall 38 is formed of a cylindrical body having both ends open, and is disposed in the front side opening 3A of the housing body 3. The front end is joined to the back surface of the front plate 3a, and the rear end is the top plate 3b. And a rib 39 protruding from the bottom plate 3c.

  The partition wall 36 is formed in a disk shape whose outer diameter is smaller than the inner diameter of the collection wall 38, and is fixed in the housing body 3 so as to cover the rear end side opening of the collection wall 38. An annular passage 37 is formed between the partition wall 36 and the collection wall 38 to allow the third and fourth processing units 11 and 12 to communicate with each other.

  As shown in FIG. 9, the suction fan 40 includes a suction port 45 formed in the center of the front surface, and a plurality of blades 46 that are long in the interior and warped backward (opposite to the rotational direction). And a turbo fan (centrifugal fan) that sucks air 10 from the axial direction and rotates and discharges it radially outward by rotating the blades 46, and is attached to the output shaft 48 of the drive motor 47 (FIG. 6). Is disposed in the center of the collection unit 41.

  10 and 11, the collection unit 41 includes a front plate 50 having a center hole 51, two large and small collection tubes 52A and 52B attached to the back surface of the front plate 50, and collection tubes 52A and 52B. The ring 53 is attached to the rear end of the front plate 50, and the cylindrical body 54 is provided at the center of the front plate 50. The collecting cylinders 52 </ b> A and 52 </ b> B are formed in a cylindrical shape by a perforated plate, have a large number of mist passage holes 55 that are long in the axial direction, and are concentrically attached to the back surface of the front plate 50. The ring 53 is formed of a ring having an outer diameter substantially equal to the inner diameter of the collection wall 38 and an inner diameter substantially equal to the inner diameter of the inner collection tube 52A, and forms a passage for the air 10 formed over the entire circumference. A plurality of long passage holes 56 and four positioning holes 57 are provided.

  Such a collection unit 41 is detachably inserted into the third processing unit 11 from the front of the housing body 3 and is positioned by the positioning hole 57 and the positioning pin 58 (FIG. 6) and prevented from rotating. In the closed state of the front door 4, the front plate 50 is pressed by the annular pressing body 22 projecting on the back side, so that the outer peripheral edge of the ring 53 is fixed to the collecting wall 38. The inner peripheral edge is in close contact with the front outer peripheral edge of the partition wall 36. Therefore, when the front door 4 is opened, the collection unit 41 can be easily attached to or removed from the third processing unit 11.

  The cylinder 54 is formed of a cylinder open at both ends, and forms a suction port 59 that guides the air 10 into the suction fan 40 and the collection unit 41.

  In FIG. 6, the fourth processing unit 12 further captures a small amount of foreign matter such as oil mist and cutting powder remaining in the air 10 flowing from the third processing unit 11 through the passage hole 56 of the ring 53. The drive motor 47, the air conditioning member 60, and the funnel-shaped holding member 61 that holds the front end of the air conditioning member 60 are arranged at the portion that is removed and is air-conditioned and discharged from the exhaust port 13 to the outside of the housing 2. It is installed.

  The drive motor 47 is horizontally attached to the center of the rear surface of the partition wall 36, and an output shaft 48 penetrates through a hole provided in the partition wall 36 and protrudes into the third processing unit 11, and the suction end portion receives the suction. A fan 40 is attached.

  The air conditioning member 60 is formed of a perforated plate as shown in FIG. 12 and is formed of a cylindrical body having both ends open and having a large number of small holes 62. The front end of the air conditioning member 60 is rearward of the rear end opening of the holding member 61. The rear end is supported by the back cover 5 so as to surround the side surface (outer periphery) of the motor 47.

  The holding member 61 has a front end side opening that has a larger hole diameter than the rear end side opening, the front end is fixed to the rear end of the collection wall 38, and the front end of the air conditioning member 60 is located at the rear end side opening. The part is detachably fitted.

  The back cover 5 is detachably fitted into the back side opening 3 </ b> B of the housing body 3 and fixed by a plurality of mounting screws 63. In this fixed state, the back cover 5 presses the rear end of the air conditioning member 60 and holds the air conditioning member 60 together with the holding member 61.

  The second recovery unit 14B is a part for recovering foreign matter such as oil mist and cutting powder in the air 10 removed in the third processing unit 11 and the fourth processing unit 12, and the third processing unit 11 and the fourth processing. It has a length extending to both of the parts 12 and is attached to the bottom of the housing body 3. An oil discharge port 70 is provided at the front end of the second collection unit 14B.

Next, the operation of the oil mist removing apparatus 1 having such a structure will be described.
The oil mist removing apparatus 1 is installed in a factory where the machine tool is operated, and the drive motor 47 is driven to rotate the suction fan 40 counterclockwise in FIG. 9A.

  When the suction fan 40 rotates, the air 10 outside the housing containing foreign matters such as oil mist and cutting powder is sucked into the first processing unit 7 from the intake port 6 and collides with the collision plate 24. Foreign matters such as oil mist and cutting powder having a large particle diameter contained in the air 10 are primarily captured and removed. That is, oil mist adheres to the collision plate 24 when it hits the collision plate 24. The oil mist adhering to the collision plate 24 is converted into oil droplets as the number of particles increases, flows down from the first processing unit 7 to the second processing unit 8, and is recovered by the first recovery unit 14A. Similarly, if cutting powder or dust contained in the air 10 falls on the collision processing plate 24 and falls into the second processing unit 8, it is recovered by the first recovery unit 14 </ b> A.

  The air 10 that hits the collision plate 24 turns 90 ° rightward in FIG. 7, proceeds radially outward along the collision plate 24, flows into the second processing unit 8 from the opening 26, and is cylindrical. When it hits the wall 28, it rotates centrifugally along the cylindrical wall 28, and foreign matters such as oil mist and cutting powder remaining in the air 10 are gradually moved outward by centrifugal force. When foreign matter such as oil mist and cutting powder moved to the outside is centrifugally rotated approximately 270 ° in the counterclockwise direction in FIG. 7, it strikes the cutting powder capturing portion 29a and is secondarily captured and recovered by the first recovery portion 14A. .

  The air 10 that rotates in the second processing unit 8 is sucked by the suction force of the suction fan 40, thereby being guided to the center of the suction fan 40 through the suction port 59 of the cylindrical body 54, and then being centrifuged. The oil mist, cutting powder, etc. remaining in the air 10 by passing through the collection unit 41 as a swirling flow is discharged obliquely outward in the radial direction of the suction fan 40 by being accelerated in the direction. Foreign matter is further captured and removed. That is, when the air 10 discharged from the suction fan 40 sequentially passes through the mist passage holes 55 of the collection cylinders 52A and 52B constituting the collection unit 41, oil mist, cutting powder, etc. remaining in the air 10 The foreign matter is captured and removed by hitting the hole wall of the mist passage hole 55.

  Here, the holes 55 for the mist passages of the collecting cylinders 52A and 52B are formed as elongated holes that are long in the axial direction of the suction fan 40, and the air 10 is swirled to radially outward from the center of the suction fan 40. As a synergistic effect, the mist collecting efficiency can be increased as compared with the case where the mist passage hole 55 is formed in a circular shape. That is, the air 10 including oil mist, cutting powder and the like pushed out from the suction fan 40 flows in an oblique direction with respect to the axis of the suction fan 40 as indicated by an arrow in FIG. The mist passage holes 55 of the collecting cylinders 52A and 52B are long holes, and are formed and arranged so as to be inclined with respect to the flow of the air 10, in other words, so that the collision surface is increased with respect to the flow of the air 10. Therefore, when the air 10 containing oil mist repeatedly collides with the hole edge of the mist passage hole 55, a lot of oil mist adheres to the hole edge of the mist passage hole 55, and is collected and removed. As a result, the collection efficiency can be increased.

  Similarly, as shown in FIG. 14, the passage hole 56 of the ring 53 is also a long hole, and the air 10 that has passed through the mist passage hole 55 flows in an oblique direction. Therefore, the oil mist remaining in the air 10 flows into the passage hole. It collides with the hole edge of 56, adheres, and is collected and removed, thereby increasing the collection efficiency.

  The air 10 that has passed through the passage hole 56 of the ring 53 is guided into the air conditioning member 60 through the inside of the holding member 61, proceeds rearward along the side surface (outer periphery) of the motor 47, and cools the motor 47. In addition, the air 10 is conditioned by passing through the small holes 62 of the air conditioning member 60, and foreign matters such as oil mist and cutting powder remaining in the air 10 strike against the hole edges of the small holes 62 and are cleaned. Air 10 ′ is discharged from the exhaust port 13 to the outside of the housing 2.

  As described above, the oil mist removing apparatus 1 according to the present invention collects foreign matter such as oil mist and fine cutting powder using the collision plate 24, the collecting cylinders 52A and 52B made of the porous plate, the ring 53, and the air conditioning member 60. Therefore, the filter is not required, and therefore, the purchase cost and the disposal cost of the filter are not generated, and the running cost can be reduced.

  Further, in the present invention, the air 10 guided from the first processing unit 7 to the second processing unit 8 is centrifugally rotated along the cylindrical wall 28, so that relatively heavy oil mist and cutting powder are removed outside by centrifugal force. Therefore, oil mist and cutting powder can be reliably removed in spite of a simple structure.

  Moreover, in the oil mist removing apparatus 1 according to the present invention, the mist passage hole 55 of the collecting cylinders 52A and 52B is a long hole in the axial direction, so that the oil mist collecting efficiency is higher than that of the round hole. Can be improved. The oil mist collection efficiency was measured using a collection tube consisting of a round hole having a diameter of 3 mm in the mist passage hole 55 and a long hole having a width of 2.4 mm × length of 30 mm. The collection efficiency of a collecting tube made of a round hole with a diameter of 3 mm was 44.7%, whereas in the case of a collecting tube made of a long hole with a width of 2.4 mm × length of 30 mm, its opening area About 96%, and the collection efficiency could be 61.7%. As described above, this is probably due to the fact that the air 10 is swirled by the suction fan 40 and the collision surface is increased by repeating the collision with the mist passage hole 55 formed of a long hole. .

  Furthermore, when the collection efficiency of the whole apparatus was measured, in the case of the blower disclosed in JP-A-9-105399, the collection rate at a particle diameter of 2 μm or more was about 83%. According to the oil mist removing apparatus 1 of the present invention, it was confirmed that the collection rate at a particle diameter of 2 μm or more can be improved to 99%.

  Moreover, since the oil mist removal apparatus 1 which concerns on this invention accommodates the collection unit 41 so that insertion / extraction is possible in the 3rd process part 11, and is fixing to the 3rd process part 11 with the front door 4, the collection unit 41 is carried out. It is easy and easy to attach and remove the device to and from the housing 2 and improve the handleability of the apparatus. Furthermore, since the air conditioning member 60 is also detachably disposed in the fourth processing unit 12 and pressed and fixed by the back cover 5, the air conditioning member 60 can be easily extracted when the back cover 5 is removed. Handleability can be improved.

  Further, the collection cylinders 52A, 52, the ring 53 and the air conditioning member 60 made of a perforated plate can be easily removed by the compressed air when the hole is clogged, so that the maintenance is easy and can be reused. it can.

  The present invention is not limited to the above-described embodiment, and various changes and modifications are possible. For example, the number of collection tubes 52A and 52B is not limited to two, and pressure loss is taken into consideration. It can be increased or decreased as appropriate. Further, the motor 47 may be disposed in the third processing unit 11 together with the suction fan 4.

  DESCRIPTION OF SYMBOLS 1 ... Oil mist removal apparatus, 2 ... Housing | casing, 3 ... Housing | casing main body, 3A ... Front side opening part, 3B ... Back side opening part, 4 ... Front door, 5 ... Back cover, 6 ... Intake port, 7 ... 1st DESCRIPTION OF SYMBOLS 1 process part, 8 ... 2nd process part, 10 ... Air, 11 ... 3rd process part, 12 ... 4th process part, 13 ... Exhaust port, 14 ... Mist collection part, 14A ... 1st collection part, 14B ... 1st 2 recovery part, 24 ... collision plate, 25 ... side plate, 26 ... opening, 28 ... cylindrical wall, 29a ... cutting powder capture part, 36 ... partition wall, 38 ... collection wall, 40 ... suction fan, 41 ... catch Collection unit, 47 ... motor, 50 ... front plate, 52A, 52B ... collection tube, 55 ... mist passage hole, 56 ... passage hole, 59 ... suction port, 60 ... air conditioning member.

Claims (10)

A housing having an air inlet and an air outlet;
First, second, third and fourth processing units provided in the housing;
A mist collecting part provided at the bottom of the housing,
The first processing unit has a collision plate disposed to face the intake port,
The second processing unit has a cylindrical wall that centrifugally rotates the air that has passed through the first processing unit,
The third processing unit includes a suction fan for sucking air in the second processing unit and a collection unit including a collection tube made of a perforated plate and surrounding a side surface of the suction fan,
The said 4th process part is an oil mist removal apparatus provided with the wind regulation member which winds the air which was formed with the perforated plate and passed through the said 3rd process part, and discharges it outside the said housing | casing from the said exhaust port. The oil mist removing apparatus according to claim 1, wherein
The collecting cylinder is an oil mist removing device having a large number of mist passage holes that are long in the axial direction. The oil mist removing apparatus according to claim 1 or 2,
The suction fan is an oil mist removing device comprising a turbo fan that sucks outside air from the axial direction and discharges it outside in the radial direction. In the oil mist removing apparatus according to any one of claims 1, 2, and 3,
The housing includes a box-shaped housing body whose both ends are open, and a front door and a back cover that respectively close a front-side opening and a back-side opening of the housing body. An oil mist removing apparatus having an intake port and the first and second processing units, wherein the housing body has the exhaust port and the third and fourth processing units. The oil mist removing apparatus according to claim 4,
The first processing unit has an opening that opens to one side by connecting a part of the outer periphery of the collision plate and the rear surface of the front door by a side plate, and is connected to the inside of the first processing unit from the intake port. The oil guided to the oil mist is discharged from the opening by hitting the collision plate, and is centrifugally rotated along the cylindrical wall when guided to the second processing unit. The oil mist removing apparatus according to claim 4 or 5,
The collection unit is an oil mist removing device that is detachably housed in the third processing unit and pressed and supported by the front door. In the oil mist removal apparatus as described in any one of Claims 4-6,
The back cover is an oil mist removing device that presses and supports one end of the air conditioning member. In the oil mist removing apparatus according to claim 1,
A partition wall is provided at a boundary between the third and fourth processing units, and a motor that drives the suction fan is attached to the partition wall at a center, and the partition wall and the collection wall are disposed between the partition wall and the collection wall. Is an oil mist removing device in which a large number of radially long passage holes are formed for communicating the third and fourth processing portions. The oil mist removing apparatus according to claim 1,
The said mist collection | recovery part is an oil mist removal apparatus which has the cutting powder capture part extended in the said 2nd process part in the side wall by the side of the rotation direction of the said suction fan. The oil mist removing apparatus according to claim 8 or 9,
The motor is located in the fourth processing unit;
An oil mist removing device, wherein the air conditioning member is formed in a cylindrical shape and is detachably disposed in the fourth processing unit and surrounds a side surface of the motor.

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