JP2011189326A - Mist collector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To dispense with periodical maintenance of a mist collector by improving the removal performance of mist contained in air, while reducing running cost. <P>SOLUTION: The mist collector has a casing 11 with a suction port 12 set at a lower end and a discharge port 14 set at an upper end, and an air flow directing to the discharge port 14 from the suction port 12 is generated by an air fan 15. A separation plate assembly 23 is disposed in the casing 11, and the separation plate assembly 23 is formed by stacking multiple separation plates 24 with a lot of ventilation holes 25 formed therein respectively and disposed with ventilation spaces 31 therebetween. The air flow is deflected when flowing to the ventilation holes 25 of the upper separation plates 24 from the ventilation holes 25 of the separation plates 24, and mist in the air flow impinges on the separation plates 24 and is formed into droplets and removed from in the air flow. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a mist dust collector for removing mist of liquid such as oil discharged from a processing facility or the like and contained in air.

  When machining a machine part, cutting fluid or grinding fluid is supplied to the machine component, and the machine part after machining is cleaned with a cleaning liquid. Thus, mist-like droplets are generated as so-called mist from the processing liquid such as the cutting liquid and the cleaning liquid supplied for machining and cleaning of the machine parts. If the mist is scattered from the processing facility to the outside, the environment in the factory is deteriorated. Therefore, a mist collector, that is, a mist dust collecting device is provided in the processing facility to suck and remove the mist contained in the air.

  As described in Patent Document 1, as a mist dust collecting device for removing mist, air containing mist is passed through a filter plate fixed in the case, that is, a filter, to collect the mist. As described in the filter type and Patent Document 2, there is an electrostatic dust collection type in which mist is charged and mist is attached to an electrode and collected. Furthermore, as described in Patent Document 3, the mist dust collector is a centrifugal type in which an airflow containing mist collides with a rotating disk and the mist adhering thereto is separated and removed by centrifugal force. is there.

JP-A-8-243332 JP-A-8-52314 JP-A-9-105399

  The electrostatic precipitator is excellent in mist capturing performance, but it is not only expensive, but it cannot easily clean the mist trapped on the electrode, increasing the running cost for the electrode cleaning process. There is a problem. In order to separate mist particles by centrifugal force, the centrifugal separation method needs to apply high-speed rotational energy to the air to be treated, and because it consumes a lot of power, it not only increases running costs but also captures mist. There is a problem that there is a problem.

  On the other hand, in the filter type, when the mist trapped in the filter becomes saturated, the filter must be replaced, so it is necessary for the operator to periodically remove the filter from the dust collector and perform maintenance. Impossible. This is because the mist trapped in the filter contains cutting fluid and cleaning fluid moisture, lubricating oil, surfactant liquid and other chemical substances, and the liquid component is vaporized by the air flow while staying in the filter. This is because it is inevitable that the mist component having a high viscosity is polymerized and becomes a gum-like substance and is fixed to the filter. Thus, when the mist becomes highly viscous and adheres to the filter, the mist cannot flow down from the filter, the filter is clogged, and there is a problem that the ventilation resistance of the filter increases. In addition, there is a problem that a part of the captured mist travels through the filter mesh by the airflow and flows downstream of the airflow and re-scatters from the end of the filter.

  The objective of this invention is improving the removal performance of the mist discharged | emitted from processing equipment etc. and contained in the air.

  Another object of the present invention is to eliminate periodic maintenance of the mist dust collector while reducing running costs.

  The mist dust collector of the present invention is a mist dust collector that removes mist of liquid contained in the air, wherein a suction port for sucking air is provided at the lower end portion, and an exhaust port for exhausting air is the upper end portion. A case body provided in the case body, a blower for generating an air flow from the suction port to the exhaust port in the case body, and a plurality of air holes are formed, and the case body is inclined to face in the vertical direction. A separation plate comprising a plurality of separation plates arranged with a ventilation gap therebetween, and deflecting an air flow from the ventilation hole of the lower separation plate toward the ventilation hole of the upper separation plate within the ventilation gap. An assembly, a cleaning nozzle that is provided in the case body and sprays cleaning liquid onto the separation plate assembly, and a liquid that is provided at a lower end portion of the case body and mist collides with the separation plate to form liquid droplets. Discharge outside And having a drain port.

  In the mist dust collector according to the present invention, the separating plate has an inverted V shape in which both end portions are inclined downward from a bent portion at a central portion, and the suction duct provided with the suction port is opposed to the bent portion. And provided in the case body. The mist dust collecting apparatus of the present invention is provided with a circulation flow path that connects the drain port and the cleaning nozzle, and the liquid that has been sprayed onto the separation plate assembly and dropped to the lower end of the case body is supplied to the cleaning nozzle. It is characterized by circulating supply. The mist dust collector of the present invention is characterized in that the ventilation gap has a width dimension 4 to 5 times that of the ventilation hole.

  According to the present invention, the airflow including mist passes through the separation plate assembly, and the separation plate assembly is formed by combining a plurality of separation plates each having a vent hole with a ventilation gap therebetween. Since it is formed, the airflow flowing from the vent hole of the downstream separator plate through the vent gap to the vent hole of the downstream separator plate is deflected. By deflecting the airflow in the air gap, the mist contained in the airflow collides with the separation plate and is formed into droplets. Since the separating plate is inclined and is directed in the vertical direction, the mist formed into droplets falls down along the separating plate by its own weight. Thereby, since the mist in the airflow is reliably removed in the process of passing through the separation plate assembly, the mist removal efficiency is improved.

  In this way, the mist in the air current collides with the wall surface of the separation plate and is captured from the air current, and the captured droplet is dropped downward by its own weight, so that the mist contained in the air is efficiently removed. Can be removed. The droplets adhere to the separation plate and are separated into gas and liquid. Since the separation plate is inclined, the adhered droplets fall from the separation plate by their own weight, so that the substance that has become vaporized and becomes highly viscous is separated. It does not adhere to the board. Moreover, even if foreign particles such as cutting powder adhere to the separation plate, the foreign particles can be removed by spraying the cleaning liquid from the cleaning nozzle. This eliminates the need to remove the separator plate assembly and replace or clean it, eliminating the need for apparatus maintenance.

  Since the mist is meandered between the air hole and the air gap and the airflow is removed, the airflow resistance for allowing the airflow to pass through the separation plate assembly can be reduced. Thereby, it becomes possible to generate an air current in the case body by a small blower, and the running cost of the mist dust collector can be reduced.

It is a perspective view which shows the external appearance of the mist dust collector which is one embodiment of this invention. It is a side view of the mist dust collector seen from the arrow A direction in FIG. It is sectional drawing of the arrow BB line direction in FIG. It is sectional drawing which expands and shows a separating plate. FIG. 5 is a side view of the separation plate as viewed from the direction of arrow C in FIG. 4. (A), (B) is the schematic which shows the mist dust collector which is other embodiment of this invention, respectively.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. As shown in FIGS. 1-3, this mist dust collector 10 has the case body 11 which faces the up-down direction and is supported by the support stand which is not shown in figure. The case body 11 has a front wall 11a, a back wall 11b, and left and right side walls 11c, 11d, a bottom wall 11e is attached to the lower end, and a top wall 11f is attached to the upper end. It has become.

  As shown in FIG. 3, a suction duct 13 provided with a suction port 12 that opens into the case body 11 is attached to the central portion of the bottom wall 11 e. The mist dust collector 10 is installed in the vicinity of a processing facility such as a cutting machine or a grinding machine, and air containing a mist of a processing liquid such as a cutting liquid, a grinding liquid, and a cleaning liquid is supplied to the suction duct 13. The air containing mist is sucked into the case body 11 from the suction port 12. As shown in FIG. 3, an exhaust port 14 that opens into the case body 11 is provided at the center of the top wall 11 f.

  A blower 15 is attached on the top wall 11f, and a multi-blade fan (not shown) is rotatably incorporated in the housing 16 of the blower 15. The housing 16 is formed with an air inlet opening to the exhaust port 14 and an air outlet for discharging air from the multiblade fan, and a discharge duct 17 communicating with the air outlet is provided in the housing 16. In order to drive the multiblade fan of the blower 15, an electric motor 18 is attached to the housing 16. When the multiblade fan is driven by the electric motor 18, the electric motor 18 is moved downward from the suction port 12 toward the exhaust port 14. An upward airflow is generated in the case body 11.

  A rectangular mounting opening 21 is formed in the front wall 11a of the case body 11, and the mounting opening 21 is covered with a cover 22 screwed to the front wall 11a. As shown in FIG. 3, a separation plate assembly 23 is disposed in the case body 11. The width dimension of the mounting opening 21 is larger than the width dimension W of the separation plate assembly 23, and the height dimension is larger than the height dimension H of the separation plate assembly 23. The separation plate assembly 23 is mounted. It is mounted in the processing space in the case body 11 from the opening 21 for use.

  The separation plate assembly 23 is formed by stacking a plurality of separation plates 24 with a gap therebetween. Although the separation plate assembly 23 of the mist dust collector 10 shown in the figure is formed by 13 separation plates 24, the number of separation plates 24 is not limited to 13 as long as it is a plurality.

  4 is an enlarged cross-sectional view of the separation plate 24, and FIG. 5 is a side view of the separation plate 24 viewed from the direction of arrow C in FIG.

  The separation plate 24 is formed by a quadrangular perforated plate, that is, a punching plate, in which a plurality of pores, that is, the air holes 25 are entirely dispersed, and the central portion of the separation plate 24 is a bent portion 26. Folded in an inverted V shape. The bending angle θ of the bent portion 26 is 60 degrees, and each separation plate 24 is inclined by 30 degrees with respect to the vertical line. A spacer 27 is attached to the inner surface on the lower side of the separation plate 24. The spacer 27 is formed of a round bar, and the spacer 27 is attached to the front and rear of the left and right ends of the separation plate 24 in FIG.

  As shown in FIG. 3, a stopper 28 is attached to the left and right side walls 11 c and 11 d of the case body 11 so as to protrude inward, and the separation plate assembly 23 is supported by the stopper 28. . A guide plate 29 extending in the vertical direction is attached to each stopper 28, and the position of the separation plate assembly 23 in the left-right direction in FIG. 3 is regulated by each guide plate 29.

  In order to mount the separation plate assembly 23 in the case body 11, both end portions of the lowermost separation plate 24 are disposed on the stopper 28, and other separation plates 24 are sequentially disposed thereon. The separation plates 24 are stacked with a ventilation gap 31 set by the spacer 27 therebetween. Thereby, the separation plate assembly 23 is assembled. However, the separation plate assembly 23 is arranged in the case body 11 from the mounting opening 21 under the state where the separation plate assembly 23 is assembled by previously stacking the separation plates 24 outside the case body 11. Anyway.

  When the separation plate assembly 23 is mounted in the case body 11, each separation plate 24 is arranged in an inverted V shape inclined downward from the bent portion 26 of the central portion toward both ends. The separation plate 24 is inclined in the case body 11 and is directed in the vertical direction. Since the ventilation gap 31 is formed between the upper and lower separation plates 24, the airflow flowing into the ventilation gap 31 from the ventilation hole 25 of the lower separation plate 24 is deflected, that is, changed in direction so as to spread. It will be. Further, the positions of the vent holes 25 of the separating plates 24 adjacent in the vertical direction do not completely coincide with each other, and do not overlap each other as shown in an enlarged view of a part of the separating plate 24 in FIG. Therefore, the airflow that passes through the ventilation gap 31 from the ventilation hole 25 of the lower separation plate 24 and flows into the ventilation hole 25 of the upper separation plate 24 flows along the separation plate 24 in the ventilation gap 31. Will be greatly deviated.

  Under the state where the separation plate assembly 23 is mounted in the case body 11, one end surface of each separation plate 24 is abutted against the back wall 11 b of the case body 11, and the other end surface is abutted against the cover 22. Since the length L of the separation plate 24 is set so as to be applied, the airflow flowing from the suction port 12 does not leak from between the separation plate assembly 23 and the inner surface of the case body 11, and the vent hole 25. And flows to the exhaust port 14.

  When the airflow passes through the vent holes 25, each of the vent holes 25 functions as a nozzle, and the airflow is squeezed by the vent holes 25 to increase the speed and collide with the upper separation plate 24. . At that time, the mist contained in the airflow cannot follow the airflow deflected in the ventilation gap 31 due to inertia and collides with the separation plate 24 to form droplets. Further, when the air flow enters the vent hole 25 of the upper separation plate 24 from the air gap 31, the air flow is constricted and contracted, so that the liquid droplet cannot be followed by the deflected deflected flow. It goes straight and collides with the periphery of the vent hole 25 to form droplets. When the airflow from the suction port 12 toward the exhaust port 14 passes through the separation plate assembly 23, the airflow is deflected in the direction along the separation plate 24 in the ventilation gap 31 and the deflection due to the throttle action by the ventilation hole 25. Is repeated, the mist is effectively made into droplets. The mist adhered to each separation plate 24 and formed into droplets slides down the separation plate 24 inclined and directed in the vertical direction, and falls due to its own weight. Since the spacers 27 attached to the respective separation plates 24 are formed by round bars, the droplets adhering to the spacers 27 also fall along the spacers 27 smoothly by their own weight.

  As shown in FIG. 5, the air holes 25 are formed in the separation plate 24 in a lattice shape at regular intervals in the vertical direction and the horizontal direction. In the separation plate 24 shown in FIG. 5, the inner diameter of the vent holes 25 is 1 mm, the hole pitch is 3 mm, and the total area of the vent holes 25 in the punching plate, that is, the separation plate 24 is set to about 17%. ing. In order to cause the mist to collide with the separation plate 24 by inertia by flowing into the ventilation gap 31 from the ventilation hole 25 and flowing into the ventilation hole 25 of the separation plate 24 on the upper stage side, the ventilation gap The width dimension S of 31 is set corresponding to the inner diameter of the vent hole 25. In other words, since the air flowing into the ventilation gap 31 loses speed as it moves away from the ventilation hole 25, the mist collision effect decreases as the distance to the upper separation plate 24 increases. When the vent hole 25 is considered as a nozzle, there is a potential core at the center of the vent hole 25 up to a certain distance from the nozzle outlet, and the center speed can keep the same speed as the nozzle outlet inside the potential core. . Since this distance is 4 to 5 times the inner diameter of the nozzle hole, when the inner diameter of the vent hole 25 is 1 mm, the width dimension S of the vent channel, that is, the interval between the separation plates 24 is preferably about 4 to 5 mm. .

  In the illustrated separation plate assembly 23, the width dimension S of the ventilation gap 31 is set to 5 mm. As a result, it is possible to cause the mist contained in the airflow flowing into the ventilation gap 31 from the vent hole 25 to collide with the separation plate 24 and to reliably capture the mist on the separation plate 24 and remove the mist from the airflow. Become. If the inner diameter of the vent hole 25 is set to about 1 mm, it is possible to prevent the foreign particles contained in the airflow from being clogged in the vent hole 25. Similarly, since the width dimension S of the air gap 31 is 5 mm, it is possible to prevent foreign particles from being clogged in the air gap 31.

  As shown in FIG. 5, the vent hole 25 is formed by a circular hole. However, if the ease of manufacturing the separation plate 24 is not taken into consideration, the vent hole 25 is optional such as an oval, a long hole, or a square hole. The vent hole 25 may be formed in the shape of Further, the arrangement form of the air holes 25 is not limited to the lattice form as shown in the figure, and may be a zigzag form or a random arrangement form. As shown in FIG. 5, if the dimension M1 from the one end surface of the separating plate 24 to the vent hole 25 on the one end surface side is different from the dimension M2 from the other end surface to the vent hole 25 on the other end surface side, Even if the separation plate assembly 23 is assembled using the separation plate 24 processed into a shape, if both end portions of the separation plates 24 adjacent to each other in the upper and lower directions are opposite to each other, the upper and lower separations are adjacent to each other. The air holes 25 of the plate 24 do not completely coincide with each other and are shifted from each other. Thereby, the airflow flowing into the ventilation gap 31 from the ventilation hole 25 can be largely deflected in the direction along the separation plate 24. As a form of the separating plate assembly 23, the separating plates 24 adjacent to each other in the vertical direction may be formed by stacking the ones having different arrangement forms of the vent holes 25 from each other.

  As described above, the mist collides with the separation plate 24 having the inclined surface to form droplets, and the droplets are slid along the surface of the smooth separation plate 24 and dropped by its own weight. The mist in the form of droplets can be reliably dropped downward without vaporizing, polymerizing, or increasing the density of the mist trapped in the mist. Thereby, the capture performance can be maintained over a long period of time without performing maintenance for replacing the separation plate assembly 23. The dropletized mist does not stay while adhering to the separation plate 24, so that it does not scatter again toward the exhaust port 14 on the downstream side, and the mist capturing performance is improved.

  In addition, in the plurality of layered air gaps 31, the airflow is guided by being deflected with respect to the vent holes 25 of the vertically adjacent separating plates 24 so that the mist collides with the separating plate 24 due to its inertia. Therefore, the pressure loss in the separation plate assembly 23 can be reduced as compared with a mist dust collector using a filter. Thereby, the air blower 15 with small power consumption can be used, and the running cost of the mist dust collector 10 can be reduced.

  As shown in FIG. 3, the separation plate assembly 23 has an inverted V shape as a whole, and a space 32 is formed in the central portion. A suction duct 13 is attached to the case body 11 with a part of the upper end portion thereof being inserted into the space 32, and the separator plate assembly 23 is replaced with an inverted V shape shown in FIG. The vertical dimension of the mist dust collector 10 can be reduced as compared with the above-described form. In addition, since the suction duct 13 is provided in the central portion of the case body 11, the airflow flowing into the case body 11 from the suction port 12 is uniformly dispersed so as to be divided into left and right in FIG. 23 will be passed.

  A drain chamber 33 for storing liquid is formed outside the suction duct 13. A drain port 34 communicating with the drain chamber 33 is attached to the bottom wall 11e as shown in FIG. 2, and the liquid droplets falling into the drain chamber 33 are discharged to the outside from the drain port 34.

  If fine foreign particles such as chips are contained in the air supplied from the suction duct 13 into the case body 11, there is a possibility that the air will be deposited while adhering to the separation plate 24. A cleaning liquid supply pipe 35 is provided at the upper end of the case body 11, and a plurality of cleaning nozzles 36 are provided in the cleaning liquid supply pipe 35. The cleaning nozzle 36 is formed by a hole provided in the cleaning liquid supply pipe 35. Industrial water or coolant liquid is supplied to the cleaning liquid supply pipe 35 as a cleaning liquid from the outside, and the separator plate assembly is periodically provided in a state where the operation of the mist dust collector 10 is stopped. 23 is sprayed with cleaning liquid. In this way, the foreign matter adhering to the separation plate 24 can be removed without removing the separation plate assembly 23 from the case body 11 by simply spraying the cleaning liquid onto the separation plate assembly 23, and the mist dust collector No maintenance work, that is, maintenance work by the worker for 10 is required. Thereby, the mist dust collector 10 becomes maintenance-free while reducing running cost.

  The cleaning operation of the separation plate assembly 23 is performed by spraying the cleaning liquid from the cleaning liquid supply pipe 35 for a certain period of time. It is stored in the coolant tank of processing equipment such as machines. In the mist dust collecting apparatus 10 configured to supply the cleaning liquid stored in the coolant tank to the cleaning nozzle 36 again, a circulation flow path is provided between the coolant tank and the cleaning liquid supply pipe 35. A part of the cleaning liquid in the coolant tank is supplied to the cleaning nozzle 36 by the provided pump and is circulated for use.

  As shown in FIG. 3, the cleaning liquid supply pipe 35 is provided between the separation plate assembly 23 and the exhaust port 14, but the cleaning liquid supply pipe 35 may be replaced with or combined with the cleaning liquid supply pipe 35. As shown by a two-dot chain line, a cleaning liquid supply pipe 37 may be provided in the central space 32 below the separation plate assembly 23. When the cleaning liquid is sprayed from the lower cleaning liquid supply pipe 37 to the separation plate assembly 23 in this way, the blower 15 is driven to generate an airflow that flows upward in the case body 11 to bring the cleaning liquid upward. Will be moved.

  6 (A) and 6 (B) are schematic views showing a mist dust collecting apparatus according to another embodiment of the present invention. In FIG. 6, the same code | symbol is attached | subjected to the member which is common in the mist dust collector 10 mentioned above.

  The separation plate 24 of the mist dust collector 10a shown in FIG. 6 (A) has a substantially inverted U shape, whereas the above-described separation plate 24 has an inverted V shape. Each separation plate 24 in the mist dust collector 10a has both end portions extending in the vertical direction, and the intermediate portion has a semicircular shape. Since the separation plate 24 shown in FIG. 6A has both ends extending vertically in the vertical direction, the separation plate assembly 23 is assembled by combining a plurality of separation plates 24 having different sizes. However, the mist that collides with the separation plate 24 to form droplets falls more smoothly than when the separation plate 24 is inclined.

  As shown in FIG. 6 (A), a coolant tank 40 for supplying the coolant to the processing apparatus via a pump 41 is connected to the coolant tank 40 in which the cleaning liquid discharged from the drain port 34 is stored. ing. The coolant liquid supply flow path 42 is branched halfway and connected to the cleaning liquid supply pipe 35 via a flow path switching valve 43a. As a result, a circulation path for the cleaning liquid is formed. The flow path switching valve 43a operates at a position where the coolant liquid supply flow path 42 is communicated with the cleaning liquid supply pipe 35 and a position where this communication is blocked. In addition, although the coolant liquid is regularly replenished to the normal coolant tank 40 directly from a water supply passage (not shown), as shown in FIG. 6 (A), the cleaning liquid is supplied to the water supply passage 44 via the passage switching valve 43b. The coolant may be supplied via the mist dust collector 10 so as to be connected to the supply pipe 35.

  The separation plate 24 of the mist dust collector 10b shown in FIG. 6 (B) is formed in a flat shape as a whole, and the separation plate assembly 23 is arranged so that each separation plate 24 is inclined and faces the vertical direction. It is mounted inside the case body 11. Thus, in the form in which the flat separation plate 24 is inclined and disposed in the case body 11, the suction duct 13 and the exhaust port 14 are formed on the left and right side walls 11c and 11d. Then, the height dimension of the mist dust collector 10b can be made small. In this type of mist dust collector 10b, an exhaust duct 45 is provided to allow the exhaust port 14 and the blower 15 to communicate with each other.

  The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. For example, the mist dust collecting apparatus 10b shown in FIG. 6B and the mist dust collecting apparatus 10 shown in FIG. 3 also have the coolant liquid supply flow path 42 that forms the circulation flow path shown in FIG. It is good also as a form.

10, 10a, 10b Mist dust collector 11 Case body 12 Suction port 13 Suction duct 14 Exhaust port 15 Blower 17 Discharge duct 18 Electric motor 23 Separator plate assembly 24 Separator plate 25 Vent hole 27 Spacer 31 Vent gap 33 Drain chamber 34 Drain Port 35 Cleaning liquid supply pipe 36 Cleaning nozzle 40 Coolant tank 41 Pump 42 Coolant liquid supply flow path (circulation flow path)

Claims (4)

A mist dust collector for removing mist of liquid contained in air,
A case body provided with a suction port for sucking air at the lower end and an exhaust port for exhausting air at the upper end;
A blower that generates an airflow from the suction port toward the exhaust port in the case body;
Each of the plurality of vent holes is formed, and includes a plurality of separation plates that are inclined in the case body and are directed in the vertical direction to be spaced apart from each other by a ventilation gap. A separation plate assembly for deflecting an air flow toward the vent hole of the upper separation plate in the ventilation gap;
A cleaning nozzle provided on the case body and spraying a cleaning liquid on the separation plate assembly;
A mist dust collecting apparatus, comprising: a drain port provided at a lower end portion of the case body, and having a mist colliding with the separation plate to form liquid droplets and discharging the dropped liquid to the outside.   2. The mist dust collector according to claim 1, wherein the separation plate has an inverted V shape in which both end portions are inclined downward from a bent portion at a central portion, and the suction duct provided with the suction port is connected to the bent portion. A mist dust collecting device, wherein the mist dust collecting device is provided on the case body so as to face the surface.   3. The mist dust collector according to claim 1, wherein a circulation flow path that connects the drain port and the cleaning nozzle is provided, and the liquid that has been sprayed onto the separation plate assembly and dropped to the lower end of the case body. A mist dust collector, wherein the mist dust collector is circulated and supplied to the cleaning nozzle.   The mist dust collector according to any one of claims 1 to 3, wherein the ventilation gap is 4 to 5 times as wide as the ventilation hole.

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