JP5356834B2 - Oil mist removal device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an oil mist eliminator increasing oil mist collection capacity, operable for a long term with extremely simple maintenance without requiring replacement of a primary side filter. <P>SOLUTION: The oil mist eliminator includes a rotary disk 18 coaxially rotating with an output shaft 11a, a plurality of meshes 19 provided near an outer periphery of the rotary disk 18, and a fixed blade body 21 for guiding air flow whirling in the same direction with the rotation direction of the rotary disk 18. The oil mist eliminator separates relatively large dust, such as cutting powder, contained in oil mist by centrifugal force of the whirling air flow from dust-containing air flow containing the oil mist sucked from a sucking port 15 by sucking action caused by the rotation of a suction fan 14, and flips off the oil mist rising up in a whirl by the meshes 19, rotating in the direction reverse to the whirling direction of the whirling air flow, toward the outer circumference, while impinging the oil mist against the meshes, to thereby drain the oil from an outer cylinder 13. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to an oil mist removing apparatus capable of collecting and removing oil mist from a dust-containing air flow such as oil smoke generated inside a machine tool.

  2. Description of the Related Art Conventionally, an oil mist removing device capable of collecting and removing oil mist from a dust-containing air flow such as oil smoke generated inside a machine tool is known.

  In addition, in such an oil mist removing device, for example, when the oil mist is collected by taking in a dust-containing air flow, the filter can be exchanged from the inlet to the inside of the main casing. A suction fan that is rotated by driving an electric motor so as to suck a dust-containing air current is provided inside the main body casing, a face plate with a ventilation structure is provided inside the suction fan, and a flexible mesh filter is provided inside the face plate. There is known a technique in which a rectifying plate and a primary filter are provided between an inlet and a suction fan (see, for example, Patent Document 1).

  In addition, for example, when oil mist is collected by taking in a dust-containing air flow, the entrance side mounted on the collector case located upstream of the impeller to prevent filter clogging due to collected dust or the like There is also known a technique in which a collector is provided with a plurality of vertical independent air paths whose upper and lower ends are opened and a suction passage is circulated from the upper end opening toward the lower end opening (for example, Patent Document 2). reference).

JP 2003-275524 A JP 2006-088050 A

  However, in the above-described oil mist removing device, for example, a flexible mesh filter is provided inside the face plate disposed inside the suction fan, and a rectifying plate and a primary filter are provided between the inlet and the suction fan. If it is provided, fine chips contained in the oil mist are likely to accumulate on the primary filter while the oil mist collection operation is in continuous operation, and pressure loss occurs due to filter clogging associated with the accumulation of the chips. As a result, the amount of suction air decreased and the collection performance decreased, and there was a problem that frequent maintenance such as cleaning and replacement of the filter was required.

  In addition, when many air paths are circulated up and down without providing a filter on the primary side, depending on the content and viscosity of the oil mist, more oil mist leaks to the secondary side. It is indispensable to arrange the filter, and in order to eliminate the contamination and pressure loss of the filter on the secondary side, there is a problem that maintenance such as periodic filter cleaning and replacement cannot be avoided.

  In view of the above circumstances, the present invention takes into account the above circumstances and can improve the oil mist collection capability and can withstand long-term operation with extremely simple maintenance without requiring replacement of the primary filter. The purpose is to provide.

  An oil mist removing device according to the present invention includes an electric motor having an axis in a substantially vertical direction, a substantially cylindrical inner cylinder that coaxially surrounds the outer periphery of the electric motor with a predetermined interval, and an outer periphery of the inner cylinder A substantially cylindrical outer cylinder that coaxially surrounds at a predetermined interval, a suction fan that is fixed to the output shaft of the electric motor and guides airflow from the center side to the outer peripheral side, and an outer side of the outer cylinder An intake pipe that protrudes in a tangential direction intersecting with the axis from the wall surface and has an intake port that communicates the outside and the inside of the outer cylinder, and from the intake port by the negative pressure generated as the suction fan rotates A cyclone portion formed on the primary side of the suction fan so as to separate the sucked airflow; a rotating disk disposed between the cyclone portion and the suction fan and rotating coaxially with the output shaft; A plurality of rotating disks are provided near the outer periphery. A mesh that exerts a collision action when rotating on the airflow flowing up and down, and an airflow that is arranged between the rotating disk and the suction fan and swirls in the same direction as the rotating direction of the rotating disk toward the center. A stationary blade body for guiding, and a dust-containing air current including oil mist sucked from the intake port by a suction action accompanying rotation of the suction fan is included in the oil mist as a swirling air current by a centrifugal action of the cyclone unit After separating relatively large dust such as chips, and splashing oil mist rising while swirling by the mesh rotating in the direction opposite to the swirling direction of the swirling airflow, It is characterized by waste oil from the cylinder.

  According to the oil mist removing apparatus of the present invention, the oil mist is removed and collected by a cyclone portion and a rotating disk that rotates at high speed, and the filter is not used. Therefore, an oil mist removing device that does not require maintenance for filter replacement is realized. The rotation direction of the rotating disk has a rotation axis in a substantially vertical direction, and the balance of the rotating disk is not deteriorated by dripping and condensing oil mist at the time of stopping, and vibration and noise are suppressed to a low level. The fixed vane that guides the airflow to the suction fan with the guide vane between the rotating disk and the suction fan allows the clean airflow that has passed through the outer periphery due to the collision of oil mist and mesh in the airflow in the rotating disk By rectifying the flow, the suction efficiency of the suction fan can be maintained high, which can help reduce the power consumption of the electric motor.

  The oil mist removing apparatus according to claim 2 is characterized in that the mesh is a large number of wires arranged radially.

  The oil mist removing apparatus according to claim 3 is characterized in that the mesh is a large number of radial slits formed on the rotating disk by etching or pressing.

  According to the structure of Claim 2 and Claim 3, it becomes possible to form very fine and many meshes which make oil mist collision and aggregation using the high-speed rotation of an electric motor, and it is flipped away by the radial space | gap. Stable oil mist acts in the direction of the outer cylinder of the disk, making it easy to agglomerate oil mist, improving the collection efficiency of oil mist, and stable slits in many voids Can be easily configured at intervals.

  According to a fourth aspect of the present invention, there is provided the oil mist removing device, wherein a plurality of rectifying blades inclined in an inclined direction rising in a swirling air flow direction by the cyclone portion are provided between the cyclone portion and the rotating disk at a predetermined interval in the circumferential direction. It is characterized by having arranged.

  According to the configuration of the fourth aspect of the present invention, it is possible to collide an air flow that is further stably rectified with a collision entry angle in a direction opposite to the rotation direction of the rotating disk, and to improve the collection efficiency of the oil mist removing device. This can be further improved.

Oil mist removal apparatus according to claim 5, characterized Rukoto collide with the rotating disc while being separated intake air flow to a plurality of the swirling flow portion by at least one separator to the cyclone unit.

The oil mist removing apparatus according to claim 6, wherein the separator is formed in a cylindrical shape or a tapered shape that divides a rectifying plate constituted by the plurality of rectifying blades into inner and outer compartments in a radial direction. you.

According to the structure of Claim 5 and Claim 6, the area of the mesh of a rotating disc can be utilized effectively by isolate | separating into a some airflow in the step of a swirling flow, and making it collide with a rotating disc. The air flow concentrated in the outer diameter direction is separated by the swirling flow, and dispersed into multiple diameters and collided with the mesh on the disk, thereby reducing the rotational load of the disk and reducing the power consumption of the electric motor. and, it is possible to increase the area of the mesh, the pressure loss of the suction airflow Ru can be reduced to contribute to the reduction of the power consumption of the further electric motor.

The oil mist removing apparatus according to claim 7 is provided with an exhaust airflow swirl that swirls the exhaust airflow from the suction fan in the same direction as the rotation direction of the suction fan, and is released in the exhaust airflow swirl direction and reverse direction The at least one exhaust airflow swirl guide member that is shielded is disposed in the upper part of the secondary side of the suction fan so as to be able to circulate through the communication port .

According to the configuration of claim 7 , by turning the exhaust airflow into a swirl flow, the exhaust efficiency from the exhaust port is increased, the exhaust noise is reduced, the efficiency of the suction fan is increased, and the overall power consumption is reduced. Can be reduced .

  An oil mist removing apparatus according to an eighth aspect is characterized in that the apparatus main body is fixed via a vibration proof damper.

  According to the structure of Claim 8, the vibration of the whole apparatus can be suppressed and noise can be reduced. Moreover, even when mounted on a machine tool or the like that requires precise machining accuracy, since the vibration of the oil mist removing device is suppressed, adverse effects on the machining accuracy of the machine tool can be suppressed.

  The oil mist removing apparatus according to claim 9 is characterized in that the vibration damping damper is disposed in the middle of the apparatus main body in the height direction.

  According to the structure described in claim 9, the vibration isolating rubber is attached in the vicinity of the rotating disk or the suction fan that is a noise generation source, so that the vibration of the entire apparatus is efficiently attenuated, and the vibration and noise are further increased. The suction duct is unnecessary, and most of the oil mist removing device is embedded in the machine tool body to reduce the number of protrusions, thereby relaxing the restrictions on the environmental conditions of the installation part, such as the ceiling height. can do.

  The oil mist removing device according to claim 10 is characterized in that a plurality of the rotating disks are arranged so as to face each other in a separated state and rotate in opposite directions.

  According to the configuration of claim 10, the oil mist once blown off by the mesh swirling at a high speed is re-scattered, or leaks from the outer peripheral portion of the rotating disk to flow to the secondary side. The remaining oil mist can be collected by collecting it with the mesh of the rotating disk rotating at high speed again and aggregating it on the outer periphery. The direction of rotation of the first rotating disk and the second rotating disk The effect of doubling the relative speed due to the difference between the two can also contribute to the improvement of the collection performance.

  The oil mist removing apparatus according to claim 11, wherein the outer cylinder is provided with a cleaning port protruding through a part near the outer periphery of the fixed blade body and projecting to a radial position facing the mesh. Features.

  According to the structure of claim 11, even when oil mist sticking components or dust components adhere to the mesh, cleaning can be performed by introducing a cleaning liquid or cleaning air from the outside to the mesh. Maintenance is not required, and operations such as regular maintenance when used for a long time can be easily performed.

  The present invention can improve the ability to collect oil mist and can withstand long-term operation with extremely simple maintenance without requiring replacement of the primary filter.

It is a perspective view of the oil mist removal apparatus in Embodiment 1 of this invention. It is a side view of the oil mist removal apparatus in Embodiment 1 of this invention. It is a disassembled perspective view of the oil mist removal apparatus in Embodiment 1 of this invention. It is sectional drawing of the principal part of the oil mist removal apparatus in Embodiment 1 of this invention. It is a disassembled perspective view (perspective view) of the principal part of the oil mist removal apparatus in Embodiment 1 of this invention. It is sectional drawing of the principal part of effect | action description of the oil mist removal apparatus in Embodiment 1 of this invention. It is a bottom view of the principal part of operation | movement description of the oil mist removal apparatus in Embodiment 1 of this invention. It is a bottom view of the principal part of the modification 1 of the oil mist removal apparatus of this invention. It is an enlarged bottom view of the principal part of the modification 2 of the oil mist removal apparatus of this invention. It is sectional drawing of the principal part of the oil mist removal apparatus in Embodiment 2 of this invention. It is sectional drawing of the oil mist removal apparatus in Embodiment 2 of this invention. It is a perspective view of the principal part of the oil mist removal apparatus in Embodiment 2 of this invention. It is sectional drawing of internal operation | movement description of the oil mist removal apparatus in Embodiment 3 of this invention. It is explanatory drawing of the use condition 1 in the oil mist removal apparatus of this invention. It is explanatory drawing of the use condition 2 in the oil mist removal apparatus of this invention.

  Next, the oil mist removing apparatus of the present invention will be described with reference to the drawings.

  The following embodiments are preferred specific examples of the present invention and may have various technically preferable limitations. However, the technical scope of the present invention is not limited to the description of the present invention. As long as it is not limited to these embodiments.

(Embodiment 1)
1 is a perspective view of an oil mist removing apparatus according to Embodiment 1 of the present invention, FIG. 2 is a side view of the oil mist removing apparatus according to Embodiment 1 of the present invention, and FIG. 3 is an oil according to Embodiment 1 of the present invention. FIG. 4 is a sectional view of the oil mist removing apparatus according to Embodiment 1 of the present invention.

  1 to 4, an oil mist removing apparatus 10 surrounds an electric motor 11 (shown in FIGS. 3 and 4) having an axis in a substantially vertical direction and an outer periphery of the electric motor 11 coaxially with a predetermined interval. A substantially cylindrical inner cylinder 12 (shown in FIG. 4), a substantially cylindrical outer cylinder 13 that coaxially surrounds the outer periphery of the inner cylinder 12 with a predetermined interval, and an output shaft 11 a of the electric motor 11. A suction fan 14 that is fixed and guides the airflow from the center side to the outer peripheral side, and an intake port 15 that protrudes in a tangential direction intersecting the axis from the outer wall surface of the outer cylinder 13 and communicates the outside and the inside of the outer cylinder 13. A cyclone portion 17 that separates the airflow sucked from the intake port 15 by the negative pressure generated as the suction fan 14 rotates, is formed below (primary side) the suction fan 14. Yes.

  Further, the oil mist removing device 10 is disposed between the cyclone portion 17 and the suction fan 14 and is provided with a rotating disk 18 that rotates coaxially with the output shaft 11a, and a plurality of oil mist removing apparatuses 10 provided in the vicinity of the outer periphery of the rotating disk 18. The mesh 19 that has a collision effect when rotating on the airflow flowing through the airflow, and the airflow that is arranged between the rotating disk 18 and the suction fan 14 and rotates in the same direction as the rotating direction of the rotating disk 18 is centered. A stationary blade body 21 having a plurality of guide blades 20 curved in the direction of guiding to the air, and a dust-containing airflow including oil mist sucked from the intake port 15 by the suction action accompanying the rotation of the suction fan 14. The centrifugal action of the cyclone unit 17 separates relatively large dust such as chips contained in the oil mist, and the rotating disk 18 rotates in the direction opposite to the swirling direction of the swirling airflow. While colliding oil mist rises while swirling the Interview 19 ... after having flicked on the outer periphery, it is configured to waste oil from waste oil port 22 provided below the outer cylinder 13.

  Hereinafter, a more specific configuration of the present invention will be described.

  The inner cylinder 12 and the outer cylinder 13 are configured in a bottomed double cylinder shape by connecting each lower part thereof with a bottom plate 26, but the inner side of the inner cylinder 12 is a bottomless space, The electric motor 11 is inserted from the lower side of the bottomless space, and the upper end attachment portion is suspended from the flange portion 12a at the upper end of the inner cylinder 12 by a bolt.

  On the other hand, the bottom plate 26 is supported by a plurality of anti-vibration dampers 24... Fixed to the pedestal 23 via spacers 25, and the mist removing device 10 for the inner cylinder 12, the outer cylinder 13 and the like integrated with the bottom plate 26. The main structure is attached to the base 23 so as to be swingable. Further, the electric motor 11 is supplied with power from a control circuit unit CU fixed to the outer wall of the outer cylinder 13 and its rotational speed is controlled. Further, the flange portion 12a at the upper end of the inner cylinder 12 fixes a rectifying plate 28 provided with a plurality of rectifying blades 27 that define the air flow direction (swirl direction) in the cyclone portion 17 of the air flow sucked from the intake port 15. Yes. The rectifying plate 28 is formed with a plurality of rectifying openings 28a corresponding to the lower side of the rectifying blades 27. At this time, the rectifying openings 28a can be simultaneously formed by cutting and raising the rectifying blades 27.

  If the rectifying plate 28 is not provided with the rectifying blades 27 and only the small-diameter opening is formed by punching metal or the like, the airflow rising by the large number of small-diameter openings is difficult although the direction of the airflow by the rectifying blades 27 becomes difficult. Can be distributed to exhibit a rectifying effect, and an effect that the ratio of colliding with the rotating disk 18 can be equalized on the circumference can be achieved. In addition, this punching metal also serves as a guard that prevents the rotating disk 18 from being touched when a foreign matter removal effect is made possible by providing an opening / closing lid or the like on a part of the outer cylinder 13, for example. Can do. At this time, it is most effective to employ both the rectifying blades 27 ... and the punching metal, but the effect of the present invention can be sufficiently exerted by mounting only with the punching metal in order to reduce the cost. .

  The outer cylinder 13 is fixed to the bottom plate 26 and integrally forms the intake pipe 16 and the waste oil port 22. The intake pipe 16 and the waste oil port 22 may be separate. At this time, the waste oil port 22 is partially flush with the top surface of the bottom plate 26. Further, a stepped cylinder 29 that is expanded stepwise is provided on the outer cylinder 13 so as to surround the outer periphery of the suction fan 14 and the fixed blade body 21 coaxially. The stepped cylinder 29 is provided with a cleaning port 30 used when supplying cleaning water (or cleaning air) for internal cleaning. The cleaning water supplied from the cleaning port 30 is discharged from the waste oil port 22. Further, an upper part of the stepped cylinder 29 is provided with a covered cylindrical exhaust airflow swirling cover 33 that covers the exhaust airflow swirling guide member 31 and the exhaust muffler 32 disposed above the suction fan 14.

  The exhaust airflow swirl guide member 31 includes a disk-shaped base plate 34 and a pair of substantially arc-shaped guide plates fixed to the inside of a pair of exhaust intake ports 34a, 34a formed on the outer periphery of the base plate 34. 35, 35.

  The exhaust muffler 32 moves to the inside of the exhaust intake ports 34a, 34a after the airflow discharged from the outer periphery of the suction fan 14 swirls between the outside of the exhaust intake ports 34a, 34a of the base plate 34 and the exhaust airflow swirl cover 33. It is comprised from the substantially cylindrical body which has many internal and external communication ports so that the guided exhaust_gas | exhaustion may be taken in. Specifically, the exhaust muffler 32 is provided with a large number of small-diameter openings formed of punching metal or the like, and can circulate and rectify the flow of the exhaust airflow. Although the small-diameter opening portion passes along with the airflow, the wind noise is reflected outside the small-diameter opening portion, and there is an effect of reducing the sound by generating a sound canceling effect around it. Note that the aperture ratio of the punching metal may be as low as about 50%, and a material having a large plate thickness is preferably used.

  The exhaust airflow swirl cover 33 is formed with a plurality of exhaust ports 33a... For exhausting exhaust from the outer periphery of the exhaust muffler 32 in a swirl manner toward the center of the upper surface (lid surface).

  The intake port 15 is located between the inner cylinder 12 and the outer cylinder 13 having a central axis in the vertical direction coaxial with the rotation center (output shaft 11a) of the electric motor 11, that is, at an offset position that does not intersect the vertical central axis. The air is sucked into the cyclone unit 17.

  The suction fan 14 includes a lower disk 36 formed with an intake opening 36a through which the output shaft 11a passes, and an upper disk 38 fixed to the tip of the output shaft 11a via a mounting flange 37 and facing the lower disk 36. As shown in FIG. 5, a plurality of fins 39 that are provided between the respective disks 36 and 38 and are curved so as to guide the airflow sucked from the intake opening 36 a to the outer periphery according to the rotation direction of the suction fan 14. .., And by guiding the air flow from the center side to the outer peripheral side by the plurality of fins 39, the cyclone portion 17 can be set to a negative pressure, and the dust-containing air flow including oil mist can be sucked from the intake port 15. . The lower disk 36 may have, for example, a shape narrowed so as to protrude downward around the suction opening 36a on the center side.

  The rotating disk 18 is fixed to the middle part of the output shaft 11a via the mounting flange 40. Further, a plurality of openings are formed in a substantially fan shape in the vicinity of the peripheral edge portion of the rotating disk 18, and meshes 19 are provided so as to close the openings. The mesh 19 may be formed by making a number of small holes in the rotating disk 18 itself. Further, the density and the like of the meshes 19 can be appropriately set according to the power of the electric motor 11, the oil mist particle size, the type, or the like.

  The fixed blade 21 guides the airflow that has passed through the rotary disk 18 toward the center of the suction fan 14, and includes a lower disk 41 that has a mounting hole 41a through which the mounting flange 40 passes, and an output shaft 11a. And an upper disk 42 having a mountain shape toward the center so as to intensively guide the air flow, a peripheral wall 43 provided across the peripheral edge between the disks 41, 42, and each circle A plurality of guide vanes 20 provided between the plates 41 and 42 and curved so as to guide the airflow sucked from the cyclone portion 17 to the center side along the rotation direction of the suction fan 14. In the lower disc 41, intake openings 41b are formed between the guide blades 20 at positions facing the mesh 19. In addition, the upper disc 42 may comprise a peripheral plane portion and a central mountain portion separately.

  In the above-described configuration, the oil mist removing device 10 is configured so that the airflow including the oil mist flows from the intake port 15 to the intake airflow swirling action of the cyclone unit 17 (see FIG. 5A). ), And relatively large dust particles in the oil mist are aggregated along the inner wall of the outer cylinder 13 and dropped onto the bottom plate 26 as shown in FIG. 6 and FIG. Is done.

  On the other hand, fine dust or oil mist rises between the outer cylinder 13 and the inner cylinder 12 while swirling due to the swirling action (ii) of the intake air flow, and is generated along with the inclined arrangement of the rectifying blades 27. As a result of the initial airflow rectification action (see (b) of FIG. 5), the airflow rising along the direction of the swirling airflow from the cyclone unit 17 further stabilizes the collision entry angle in the direction facing the rotation direction of the rotating disk 18. Rectified in state.

  Next, the rotating disk 18 acts as an intake airflow collision action (see (c) in FIG. 5) that removes oil mist by colliding with the rotating meshes 19... Function. The airflow that has passed through the meshes 19 is swirled in the rotational direction of the fixed blade body 21.

  Further, the fixed blade body 21 has the same rotation direction as that of the rotary disk 18 so as to guide the airflow passing through the rotary disk 18 between the rotary disk 18 and the suction fan 14 to the intake opening 36a of the suction fan 14. The plurality of guide blades 20 curved in a direction for guiding the airflow swirling in the direction to the center of the fixed blade body 21 functions as an intake airflow rectification action (see FIG. 5D). In this intake airflow rectification action (d), the flow of the clean airflow that has passed through the outer periphery due to the collision between the oil mist in the airflow in the rotating disk 18 and the mesh 19 is rectified.

  The suction fan 14 generates an airflow suction / discharge action (see (e) in FIG. 5) that exhausts the airflow to the outer periphery by the rotation, and this airflow suction / eject action (e) actually sucks the airflow from the intake port 15. The action is generated.

  The exhaust airflow swirl guide member 31 cooperates with the exhaust airflow swirl cover 33 to swirl the exhaust airflow from the suction fan 14 in the same direction as the rotation direction of the suction fan 14 (see FIG. 5F). ). That is, the exhaust airflow swirl guide member 31 is released in the exhaust airflow swirl direction and is shielded in the reverse direction, and is disposed on the secondary side of the suction fan 14 so as to be able to circulate through the communication port. Turn into.

  The exhaust port 33a exhausts the airflow, which is the exhaust airflow swirling action (f), to the outside as it is (see (g) in FIG. 5).

  Thus, according to the oil mist removing apparatus 10, since no filter is used, filter clogging does not occur, and maintenance for filter replacement is unnecessary.

  At this time, the rotation direction of the rotary disk 18 has a rotation axis in a substantially vertical direction, and the balance of the rotary disk 18 is not deteriorated by dripping and condensing the oil mist at the time of stop, and vibration and noise are generated. It can be kept low.

  Further, the stationary blade body 21 that guides the airflow to the suction fan 14 with the guide blades 20 between the rotating disk 18 and the suction fan 14 causes the oil mist in the airflow on the rotating disk 18 to collide with the mesh 19. By rectifying the flow of the clean airflow that has passed through the outer periphery, the suction efficiency of the suction fan 14 can be maintained high, and the exhaust airflow can be swirled to reduce the exhaust efficiency from the exhaust port. As a result, the exhaust noise is reduced, and at the same time the suction efficiency of the suction fan 14 can be increased. As a result, the power consumption of the electric motor 11 can be reduced.

  Further, by providing a nozzle 30a that penetrates a part of the outer periphery of the fixed blade body 21 from the outside and protrudes to a radial position facing the mesh 19 of the rotating disk 18 so as to be inserted from the cleaning port 30, the mesh 19. Even when an oil mist sticking component or dust component adheres to the surface, cleaning liquid or cleaning air can be introduced into the mesh 19 from the outside for cleaning, and the oil mist removing device 10 can be disassembled and cleaned. Not only is maintenance unnecessary, it is possible to easily perform operations such as periodic maintenance for long-time use. The washing water may be mere water, hot water containing detergent, water, steam or the like. In addition, the cleaning operation can be performed automatically and periodically using a solenoid valve, program timer, etc., realizing an oil mist collector that does not require any operator-level maintenance for long periods of operation. To do.

  By the way, in the first embodiment, the mesh 19... Uses, for example, a mesh having a large number of fine voids. More preferably, as shown in FIG. If a large number of... Are fixed radially, the oil mist that collides with the rotating disk 18 by the rotation of the electric motor 11 can be easily blown off in the outer peripheral direction.

  As shown in FIG. 9, the mesh 19 is formed by an etching plate 46 in which a fan-shaped opening 18a is formed in the rotating disk 18 and a plurality of substantially radial slits (voids) 45 are provided by etching or the like. It is possible to form the mesh structure of the rotating disk 18 constituted by closing the opening 18a and colliding and aggregating oil mist using the high-speed rotation of the electric motor 11 with a large number of fine gaps, and further radially. The oil mist blown off by the air gap acts stably in the outer circumferential direction toward the disc outer cylinder 13, so that the oil mist is easily aggregated and contributes to the improvement of the collection efficiency of the oil mist removing device 10. can do. In addition, the radial slit 45 can be easily configured with a stable slit interval, and the versatility of the radial slit 45 can be maintained high, for example, by forming a reinforcing portion 46a near the center thereof.

(Embodiment 2)
10 is a cross-sectional view of an essential part of the oil mist removing apparatus according to Embodiment 2 of the present invention, FIG. 11 is a cross-sectional view of the oil mist removing apparatus according to Embodiment 2 of the present invention, and FIG. 12 is an embodiment of the present invention. 2 is a perspective view of a main part of an oil mist removing device in FIG. 10 to 12, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  10 to 12, the cyclone portion 17 according to the second embodiment is provided in the inner and outer two layers in a state of being partitioned by an intermediate cylinder 47 provided between the inner cylinder 12 and the outer cylinder 13.

  Further, a rectifying plate 50 in which a plurality of rectifying blades 48 are partitioned inside and outside by a separator 49 is disposed below the rotating disk 18.

  As a result, the intake airflow is separated into a plurality of parts by the plurality of cyclone parts 17, and even when the oil mist collides with the rotating disk 18, the separation of the swirl flow in the cyclone part 17 by the separation by the separator 49. Oil mist can collide with the rotating disk 18 in a state where it is separated into a plurality of airflows in stages, and the area of the mesh 19 of the rotating disk 18 can be effectively utilized. Are separated into a plurality of diameters and collided with the mesh 19 on the disk, thereby reducing the rotational load of the disk, reducing the power consumption of the electric motor 11, and The area of the mesh 19 can be increased, and the power consumption of the electric motor 11 can be reduced as the pressure loss of the suction airflow is reduced.

  In the second embodiment, the section is separated by one intermediate cylinder 47 and the separator 49. However, by using two or more of these, the intake airflow can be divided into three or more, thereby further reducing the load. .

(Embodiment 3)
FIG. 13 is an explanatory diagram of the internal operation of the oil mist removing apparatus according to Embodiment 3 of the present invention.

  In FIG. 13, in Embodiment 3, two electric motors 11 and 51 are provided on the upper and lower sides, and a pair of rotating disks 18 arranged opposite to each other are provided on the output shafts 11a and 51a. ing.

  In the present embodiment, the electric motor 11 holds only the lower rotating disk 18 via the mounting flange 40.

  On the other hand, the electric motor 51 supports the suction fan 14 via the support bracket 37 and simultaneously supports the upper rotating disk 18 via the support bracket 52.

  Thereby, the drive performance of the electric motors 11 and 51 allows the rotating disks 18 to rotate in opposite directions, thereby further improving the oil mist collecting performance. In this case, the swirling airflow on the exhaust side is in the opposite direction to that of the first embodiment and is the same direction as the swirling direction of the suction airflow.

  And by comprising in this way, the oil mist once flipped off by the mesh 19 ... which turns at high speed once re-scatters, or leaks (leaks) from the outer peripheral part of the lower rotating disc 18, and the secondary side The remaining oil mist to be circulated can be collected by being blown off by the mesh 19 of the upper rotating disk 18 that rotates again at high speed and aggregated on the outer periphery.

  At this time, the effect of doubling the relative speed due to the difference in rotational direction between the lower rotating disk 18 and the upper rotating disk 18 can also contribute to the improvement of the collection performance. In the third embodiment, the example in which each of the two electric motors 11 and 51 is used for rotating the lower and upper rotary disks 18 and 18 has been described. However, a separate gear mechanism, belt mechanism, etc. It is also possible to provide a power transmission mechanism so that the rotation direction of the upper and lower rotary disks 18 and 18 is rotated in different directions by one electric motor 11 (or the electric motor 51).

  In the oil mist removing apparatus 10 configured as described above, the electric motors 11 and 51 can be rotated at a high speed by the control circuit unit CU in which an inverter or the like is incorporated, or the meshes 19 of the rotating disks 18 and 18 are arranged in two. The mesh 19 is configured to be sandwiched and fixed between the rotating disks 18 and 18, and the mesh 19 is used as a fan-shaped shape instead of being circular. The gap is not a mere radial shape but has a skew (strain / bend) in the rotational direction or the counter-rotating direction, the radial position of the separator 49 is finely adjusted by shifting it in the circumferential direction in consideration of the load balance, etc. Can also be devised.

  Thus, in the oil mist removing apparatus 10 described in the first to third embodiments, for example, as shown in FIG. 14, the device main body 53 that generates oil mist is disposed below the pedestal 23, By connecting the intake pipe 16 and the inside of the apparatus main body 53 by the intake duct 54, it is possible to intake oil mist inside the apparatus main body 53.

  In the oil mist removing apparatus 10 in the present embodiment, not only the vibration of the oil mist removing apparatus 10 is suppressed by fixing the pedestal 23 to the device main body 53 via the vibration damping dampers 24. Noise during driving can be reduced. Even when mounted on a machine tool or the like that requires precise machining accuracy, since the vibration of the oil mist removing device 10 is suppressed, it is possible to suppress adverse effects on the machining accuracy of the machine tool. be able to.

  In the oil mist removing apparatus 10 described in the first to third embodiments, for example, as shown in FIG. 15, the pedestal 23 is abolished, and the large diameter portion of the stepped cylindrical body 29 having different large and small diameters. There is no particular limitation on the state of installation, for example, an anti-vibration damper 55 is disposed on the lower surface of the housing, the outer cylinder 13 faces the inside of the device body 53, and the oil mist is directly sucked from the intake pipe 16. .

  At this time, when the oil mist removing device 10 is supported by the device main body 53 via the vibration damping dampers 55 in the vicinity of the stepped cylindrical body 29 described above, the rotating disk 18 and the suction fan 14 that are noise generation sources Since the vibration proof dampers 55 are positioned in the vicinity, the vibration of the oil mist removing device 10 is efficiently damped in combination with the support near the center of the oil mist removing device 10 in the height direction. In addition, the generation of noise can be further reduced. Further, the pedestal 23 and the intake duct 54 are not required, which can contribute to the reduction of the number of parts, and most of the oil mist removing device 10 is disposed inside the device main body 53. It is possible to reduce the amount of protrusion from the device, and it is possible to cope with the installation environment of the oil mist removing apparatus 10, for example, the restriction of the upper space, and the versatility can be improved.

DESCRIPTION OF SYMBOLS 10 ... Oil mist removal apparatus 11 ... Electric motor 11a ... Output shaft 12 ... Inner cylinder 13 ... Outer cylinder 14 ... Suction fan 15 ... Intake port 16 ... Intake pipe 17 ... Cyclone part 18 ... Rotary disk 19 ... Mesh 20 ... Guide vane 21 ... Fixed blade body 22 ... Waste oil outlet

Claims (11)

  An electric motor having an axis in a substantially vertical direction, a substantially cylindrical inner cylinder that coaxially surrounds the outer periphery of the electric motor with a predetermined interval, and an outer periphery of the inner cylinder coaxially with a predetermined interval A substantially cylindrical outer cylinder that surrounds the suction motor, a suction fan that is fixed to the output shaft of the electric motor and guides the air flow from the center side to the outer peripheral side, and a tangential direction that intersects the axis from the outer wall surface of the outer cylinder An intake pipe having an intake port that protrudes and communicates between the outside and the inside of the outer cylinder, and the air flow sucked from the intake port is separated by the negative pressure generated by the rotation of the suction fan A cyclone part formed on the primary side of the suction fan, a rotating disk disposed between the cyclone part and the suction fan and rotating coaxially with the output shaft, and a plurality of parts provided near the outer periphery of the rotating disk Rotating against the airflow that is circulated up and down And a stationary blade body that is arranged between the rotating disk and the suction fan and guides an airflow that swirls in the same direction as the rotation direction of the rotating disk to the center side. The dust-containing air current containing the oil mist sucked from the intake port by the suction action accompanying the rotation of the suction fan is used as the swirl air current, and relatively large dust such as chips contained in the oil mist is obtained by the centrifugal action of the cyclone unit. The oil mist that rises while colliding with the mesh that is separated and rotated in the direction opposite to the swirling direction of the swirling airflow is blown off to the outer periphery while colliding, and then is drained from the outer cylinder. Oil mist removal device.   The oil mist removing apparatus according to claim 1, wherein the mesh is a large number of wires arranged radially.   The oil mist removing apparatus according to claim 1, wherein the mesh is a large number of radial slits formed on the rotating disk by etching or pressing.   2. A plurality of rectifying blades inclined in an inclination direction rising in a swirling air flow direction by the cyclone portion are arranged between the cyclone portion and the rotating disk at a predetermined interval in the circumferential direction. The oil mist removal apparatus in any one of Claim thru | or 3. Oil mist removing apparatus according to claim 4, characterized in Rukoto caused to collide with the rotating disc while being separated intake air flow to a plurality of the swirling flow portion by at least one separator to the cyclone unit. The separator oil mist removing apparatus according to claim 5, characterized that you have been formed in a cylindrical shape or a tapered shape separates the inner and outer sections of the composed current plate in the radial direction by the plurality of rectifying vanes. At least one or more exhaust airflows provided in the exhaust airflow swirling unit that turns the exhaust airflow from the suction fan in the same direction as the rotation direction of the suction fan and released in the exhaust airflow swirl direction and shielded in the opposite direction. The oil mist removing device according to any one of claims 1 to 6, wherein the turning guide member is disposed on the secondary side of the suction fan so as to be able to flow through the communication port .   8. The oil mist removing apparatus according to claim 1, wherein the apparatus main body is fixed via a vibration proof damper.   9. The oil mist removing apparatus according to claim 8, wherein the vibration damping damper is disposed in a midway in the height direction of the apparatus main body.   10. The oil mist removing apparatus according to claim 1, wherein a plurality of the rotating disks are arranged so as to face each other in a separated state and rotate in opposite directions. 11. The cleaning device according to claim 1, wherein the outer cylinder is provided with a cleaning port that penetrates a portion near the outer periphery of the fixed blade body and protrudes to a radial position facing the mesh. An oil mist removing device according to claim 1.

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