JP6836683B1 - Mist collector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inexpensive mist collector which does not require maintenance such as cleaning for a long period of time because mist sprayed on a liquid together with air is absorbed by the liquid. SOLUTION: A mist collector is introduced into a gas introduction unit that introduces mist generated in a processing space for processing a work together with air, a storage unit that stores a liquid for recovering the mist, and the gas introduction unit. The liquid hoisting part where the liquid is wound up by blowing the mist and air toward the liquid contained in the housing part, and the gas discharge for returning the air after being blown to the liquid to the processing space. It is configured to include a portion and a portion to separate the mist from the air when the liquid is rolled up. [Selection diagram] Fig. 5

Description

The present invention relates to a mist collector that removes mist by exhausting coolant mist floating in a processing space for processing a work, which is partitioned by a cover member, together with air from the processing space.

The machine tool is equipped with a coolant nozzle that sprays coolant toward the machined part of the work using the tool, and by cooling the machined part with coolant, the temperature rise of the tool and work is suppressed, and the generated chips are removed from the machined part. It is configured to be removed.

Therefore, in order to remove the mist-like coolant that fills the processing space, an exhaust duct is provided in the cover member, and a mist collector that separates and removes the mist discharged together with the air through the exhaust duct is installed.

Patent Document 1 proposes a cyclone-type mist collector that captures oil mist by utilizing centrifugal force.

Japanese Unexamined Patent Publication No. 2011-11109

As a mist collector, a dry mist collector that filters air with a filter and collects mist floating in the air has been widely used in the past. Although such a mist collector is relatively inexpensive and compact, it is prone to clogging of the filter and frequently requires complicated maintenance work such as replacing the filter and cleaning the replaced used filter. There was a problem of becoming.

The cyclone type mist collector described in Patent Document 1 generally has a lower mist trapping efficiency than the filter type mist collector, and dust adheres to and accumulates on the mist adhering to the inner wall of the cyclone, so maintenance is required. There was also a problem.

An object of the present invention is to provide an inexpensive mist collector which does not require maintenance for a long period of time in view of the above-mentioned problems.

In order to achieve this object, the mist collector according to the present invention includes a gas introduction unit that introduces the mist generated in the processing space for processing the work together with air, a storage unit that stores a liquid for recovering the mist, and the above. By guiding the air containing the mist introduced into the gas introduction portion along the first guide wall and blowing it toward the liquid, the first guide wall and the first guide wall are opposed to each other from the liquid. The liquid is wound up in a space partitioned by a first facing wall extending toward the upper space and collides with the first facing wall to generate a swirling flow and gas-liquid is mixed to turn the mist into the liquid. It is characterized by including a first gas-liquid mixing unit for absorbing and a gas discharging unit for returning the air after gas-liquid mixing to the processing space.

The air containing the mist introduced from the gas introduction part is blown onto the liquid contained in the storage part to wind up the liquid, and the mist becomes a liquid in the process of gas-liquid mixing of the air containing the mist and the liquid. It is absorbed and gas-liquid separated. The gas-liquid separated air is returned to the processing space via the gas discharge part.

Further, it is preferable that the liquid hoisting portion is provided in a plurality of stages along the air flow direction, and even a mist that is not sufficiently absorbed by the liquid in the first stage is appropriately absorbed by the liquid hoisting portion in the subsequent stage. Will be.

The liquid is preferably a coolant used in the processing space, the mist is easily absorbed by the liquid, and the coolant from which the mist has been recovered can be reused.

It is preferable to provide a reflux path for returning the liquid increased by the recovered mist to the coolant tank arranged in the processing space, and as a result, the liquid level height of the liquid contained in the accommodating portion is adjusted to be constant. , Mist separation performance is stable.

According to the present invention, since the mist sprayed on the liquid together with the air is absorbed by the liquid, maintenance such as cleaning is not required for a long period of time, and an inexpensive mist collector can be provided.

It is explanatory drawing of the front view of the machine tool installed in the processing space covered with a cover body. It is explanatory drawing of the same side view. It is explanatory drawing of the front view of the mist recovery system of a machine tool. It is explanatory drawing of the mist recovery system of a machine tool in a plan view. It is a flow chart which shows the processing procedure of the mist recovery system of a machine tool. It is explanatory drawing of a mist collector. Another embodiment is shown, and it is explanatory drawing of the front view of the machine tool provided with the air purification apparatus. Another embodiment is shown, and it is explanatory drawing of the side view of the machine tool provided with the air purification apparatus. Another embodiment is shown, and it is explanatory drawing of the plan view of the machine tool provided with the air purification apparatus. Another embodiment is shown, (a) is an explanatory view of an air purification device from a bird's-eye view, (b) is an explanatory view of a front view of the air purification device, (c) is an explanatory view of a plan view of the air purification device, (d). Is an explanatory view of a plan view of an air purification device showing another aspect. Another embodiment is shown, and FIGS. (A) to (D) are explanatory views of a connecting mechanism of an air purification device. It is explanatory drawing which shows another embodiment and has a bird's-eye view of an air purification apparatus. (A) shows another embodiment, is an explanatory view of the air purification apparatus from a bird's-eye view, and (b) is an explanatory view of a front view. Another embodiment is shown, and it is explanatory drawing of the front view of the machine tool provided with the air purification apparatus.

Hereinafter, the mist recovery system of the machine tool and the mist collector incorporated in the mist recovery system will be described with reference to the drawings.

1 and 2 show a machine tool 100 installed in a processing space 210 partitioned by a cover member 200 and processing a work 10.

The machine tool 100 is vertically installed on the bed 1, a table 2 that moves in the Z-axis direction along a guide surface on the bed 1, a pallet 3 that rotates around the B axis in a vertical posture on the table 2, and a bed 1. It is composed of a horizontal machining center including a column 4 and a spindle head 5 that moves in the X-axis and Y-axis directions along the guide surface of the column 4. As shown by the broken line, the circumference of the machine tool 100 is covered with the cover member 200, and the cover member 200 is provided with a door (not shown) that can be opened and closed.

When the servomotor MZ is driven, the table 2 moves on the bed 1 along the linear drive axis in the Z-axis direction, and when the servomotor MB is driven, the pallet 3 rotates around the B-axis on the table 2. When the servomotor MX is driven, the spindle head 5 moves along the linear drive axis in the X-axis direction on the column 4, and when the servomotor MY is driven, the spindle head 5 moves in the Y-axis direction on the column 4. Moves along the linear drive axis of.

The tool 7 is held by the tool holder 6 provided on the spindle head 5, and when the servomotor MS1 is driven, the tool 7 rotates about the horizontal axis. The work 10 as a work piece is held by a jig such as an ikele provided on the pallet 3, and when the servomotor MB is driven, the work 10 held by a jig such as an ikele is vertically along the B axis together with the pallet 3. Rotate around the axis.

By driving each of the above-mentioned servomotors via the servo control unit based on a preset NC program, the work 10 and the tool 7 move relative to each other, and the work 10 is machined into a desired shape.

The spindle head 5 is provided with a coolant nozzle 20 that sprays coolant toward the machined portion of the work 10. In order to suppress the temperature rise due to the cutting heat generated in the machined part when the work 10 is machined by the tool 7 and to remove the chips adhering to the machined part, coolant, which is a fluid for cooling and cleaning, is applied to the machined part. It is sprayed toward. As a result, it is possible to avoid a decrease in machining accuracy of the work due to thermal displacement due to a temperature rise due to cutting heat, and damage to the tool 7 due to adhesion of chips.

A coolant tank 8 for collecting coolant, which is a fluid supplied for cooling and cleaning, is installed below the table 2, and chips generated during machining are collected in the coolant tank 8 together with the coolant. There is. A chip conveyor 9 is arranged at the bottom of the coolant tank 8, and the chips 11 collected in the coolant tank 8 are carried out of the machine by the chip conveyor 9 and collected in the collection container 12.

The coolant collected in the coolant tank 8 is circulated and supplied to the coolant nozzle 20 after foreign matter such as chips is removed through the drum filter 8F.

When processing the work 10, a part of the coolant injected from the coolant nozzle 20 is vaporized by the cutting heat and floats and fills the processing space 210 as finely divided mist. Therefore, the mist recovery system 500 is used to remove the mist. Has been built.

As shown in FIGS. 3 and 4, the mist recovery system 500 includes an exhaust duct 51 that exhausts the mist of coolant floating in the processing space 210 that is partitioned by the cover member 200 and processes the work 10 from the processing space 210 together with air, and exhaust. A mist collector 54 that removes mist contained in the air guided through the duct 51, an air supply duct 52 that circulates and supplies the air that has passed through the mist collector 54 to the processing space 210, and an exhaust duct 51 for suction. It is equipped with a fan 53.

An exhaust duct 51 is connected to an exhaust port 55 formed at one corner of the ceiling of the cover member 200, and air supply formed at a diagonal corner of the corner below the side wall of the cover member 200. An air supply duct 52 is connected to the port 56.

The air floating in the air exhausted from the processing space 210 through the exhaust duct 51 is removed by the mist collector 54, and the air from which the mist has been removed is circulated and supplied from the air supply duct 52 to the processing space 210. In the processing space 210, an air flow from the air supply port 56 to the exhaust port 55 is formed, and the mist is guided along the air flow.

As shown in FIG. 6, in the mist collector 54, a supply port 512 for the gas to be processed is formed on one side wall LW of the housing 511 supported by the four legs 514, and an exhaust port 513 is formed on the facing wall RW. Has been done.

An accommodating portion 520 for accommodating liquid is formed below the inside of the housing 511, and gas-liquid mixing portions 530 and 540 are formed in two stages in the space above the accommodating portion 520, and further reaches the exhaust port 513 from the downstream side thereof. A gas-liquid separation section 550 is formed in the path. The liquid contained in the accommodating portion 520 is coolant, and reference numeral 515 is a drain valve for discharging the liquid from the accommodating portion 520.

The first gas-liquid mixing portion 530 hangs down from the upper partition wall 531 toward the liquid surface of the accommodating portion 520, and faces the first guide wall 532 whose lower end is bent in a horizontal posture and the lower end of the first guide wall 532. A first lower guide wall 533 arranged so as to be in the liquid, and a first facing wall 534 facing the right side of the first guide wall 532 and extending from the liquid of the accommodating portion 520 toward the upper space. It is composed of a space partitioned by.

One end of the upper partition wall 531 is welded to one side wall LW on which the supply port 512 is formed, and the other end is bent in front of the facing wall RW and the horizontal portion 531H extending in a horizontal posture toward the facing wall RW. It is equipped with a hanging portion of 531V extending downward. Further, the gas introduction portion 510 is formed by the space sandwiched between the one side wall LW and the first guide wall 532.

The second gas-liquid mixing portion 540 hangs down from the upper partition wall 531 toward the liquid surface of the accommodating portion 520, and faces the second guide wall 541 whose lower end is bent in a horizontal posture and the lower end of the second guide wall 541. A second lower guide wall 542 arranged so as to be in the liquid, and a second facing wall 543 that faces the right side of the second guide wall 541 and extends from the liquid of the accommodating portion 520 toward the upper space. It is composed of a space partitioned by.

The gas-liquid separation portion 550 is formed in a path from the space to the right of the second facing wall 543 to the exhaust port 513, and has a hanging portion 531V of the upper partition wall 531 and one end below the exhaust port 513 to the facing wall RW. It is provided with an outlet wall 513W that is welded, the other end of which extends toward one side wall LW, and the end of which is bent downward.

The exhaust duct 51 is flange-connected to the supply port 512, and the air supply duct 52 is flange-connected to the exhaust port 513.

Air containing a large amount of mist guided from the exhaust duct 51 via a suction fan 53 is guided to the gas introduction section 510 and collides with the liquid surface. At this time, the liquid is rolled up, a swirling flow is generated in the gas-liquid mixing portion 530 through the gap between the lower end of the first guide wall 532 and the first lower guide wall 533, and the air containing the mist and the rolled up liquid come into contact with each other. The mist is absorbed by the liquid. At this time, minute chips contained in the air are also captured by the liquid at the same time.

After that, the air flows toward the liquid surface via the U-turn flow path formed at the upper end of the first facing wall 534. The space sandwiched between the first facing wall 534 and the second guide wall 541 functions as the second gas introduction portion.

The air descending from the second gas introduction portion further collides with the liquid surface, and together with the liquid wound up at this time, gas-liquid is mixed through the gap between the lower end of the second guide wall 541 and the second lower guide wall 542. A swirling flow is generated in the portion 540, and the air containing the mist and the wound liquid come into contact with each other again, and the mist is absorbed by the liquid. Similarly, minute chips contained in air are also trapped in the liquid at the same time.

After that, the air flows toward the liquid surface via the U-turn flow path formed at the upper end of the second facing wall 543, and further flows to the gas-liquid separation unit 550.

The mist and steam with a small particle size remaining in the air from which the mist and chips have been removed by gas-liquid mixing in the gas-liquid mixing sections 530 and 540 collide with the hanging portion 531V formed at the end of the upper partition wall 531. It is separated into gas and liquid, and is absorbed to the liquid side by descending along the second facing wall 543 and colliding with the liquid surface.

Further, when rising from the liquid level, it collides with the lower surface of the outlet wall 513W and is gas-liquid separated, and then exhausted from the exhaust port 513.

The coolant (liquid) increased by collecting the mist is drained from the drain port 516 via the sealing mechanism 560, and the amount of the liquid in the accommodating portion 520 is always kept constant.

As shown in FIG. 5, the air containing the coolant mist generated in the processing space 210 is sucked by the exhaust fan 53 and flows into the mist collector 54 through the exhaust duct 51, and the mist collector 54 causes mist, chips, etc. The air from which the foreign matter has been removed is circulated to the processing space 210 via the air supply duct 52.

The coolant increased by the mist collected by the mist collector 54 is collected from the mist collector 54 into the coolant tank 8 and reused after the foreign matter is removed by the drum filter 8F.

In this way, the heat of the air is absorbed by the liquid and cooled when the gas and liquid are mixed, so that the low-temperature clean air is circulated and supplied to the processing space 210, and as a result, the temperature rises due to the processing in the processing space 210. Can be suppressed.

Although the mist collector 54 described above has two stages of gas-liquid mixing portions along the air flow direction, it may be provided with a plurality of stages of three or more stages. On the contrary, the gas-liquid mixing unit may be composed of a single unit.

In the above-described embodiment, the example in which the liquid for recovering the mist by gas-liquid mixing is a coolant has been described, but a liquid other than the coolant may be used. For example, if it is a water-soluble coolant, water can be used.

In the above-described embodiment, an example in which the machine tool 100 is composed of a horizontal machining center has been described, but the machine tool 100 to which the present invention is applied is not limited to the horizontal machining center, and can be applied to various machining centers, and is a lathe. It can also be applied to machine tools that do not have a spindle head for holding tools such as.

As described above, the mist collector of the present invention has a gas introduction unit that introduces mist generated in the processing space for processing the work together with air, a storage unit that stores a liquid for recovering the mist, and the gas introduction unit. The mist and air introduced into the unit are blown toward the liquid contained in the accommodating portion to wind up the liquid, and the air after being sprayed on the liquid is returned to the processing space. It is provided with a gas discharge unit for the purpose, and is configured to separate the mist from the air when the liquid is wound up.

Further, it is preferable that the liquid hoisting portion is provided in a plurality of stages along the air flow direction, and even a mist that is not sufficiently absorbed by the liquid in the first stage is appropriately absorbed by the liquid hoisting portion in the subsequent stage. Will be.

The liquid is preferably a coolant used in the processing space, the mist is easily absorbed by the liquid, and the coolant from which the mist has been recovered can be reused.

It is preferable to provide a reflux path for returning the liquid increased by the recovered mist to the coolant tank arranged in the processing space, and as a result, the liquid level height of the liquid contained in the accommodating portion is adjusted to be constant. , Mist separation performance is stable.

The air purification device 30 of the machine tool will be described below. The air purification device 30 can be used in combination with the mist recovery system of the machine tool described above. Hereinafter, the description will be made specifically for the air purification device 30, but the device is used together with the mist recovery system described above.

As shown in FIGS. 7 to 9, the air purification device 30 of the machine tool is arranged along the inner side surface of the ceiling cover 202 of the cover member 200, and is bolted via the L-shaped angle member 25. There is. The air purification device 30 is an air purification device 30 that guides the coolant mist generated in the processing space 210 of the work described above together with air to remove the mist.

As shown in FIGS. 10A to 10C, in the air purification device 30, an intake port 32 is formed on one end side and an exhaust port 34 is formed on the other end side, and the air purification device 30 is formed from the intake port 32 to the exhaust port 34. A pipe body 31 in which an air passage 33 is formed toward the air, a filter 35 installed in the passage 33, and a first fan 36 installed in the passage 33 to guide air from the intake port 32 to the exhaust port 34. A plurality of fans including a second fan 37, and at least a part of the passage 33 are a plurality of partition passages including the first partition passage 33A and the second partition passage 33B partitioned by the partition portion 38. The first fan 36 is configured to guide air to the first partition passage 33A, and the second fan 37 is configured to guide air to the second partition passage 33B.

In the present embodiment, an axial fan is used as the first fan 36 and the second fan 37, and a multi-cyclone filter is provided as the filter 35. A drain pan 39 is provided at the bottom of the filter 35, and the coolant collected by centrifuging the mist by the filter 35 is collected in the drain pan 39 and dropped downward from the drain port 39h formed at the bottom of the drain pan 39 for processing. It is configured to return to the coolant tank 8 installed at the bottom of the space 210.

It is also possible to use a mixed flow fan or a centrifugal fan instead of the axial flow fan. In the present embodiment, the intake port 32 and the exhaust port 34 are formed on the bottom surface of the peripheral wall forming the passage 33, but the intake port 32 is formed on one end surface of the passage 33 and the exhaust port 34 is formed on the other end surface. You may be. In the latter case, it is preferable to use an axial fan or a mixed flow fan from the viewpoint of reducing pressure loss. In the former case, a cross flow fan can be preferably used in addition to a centrifugal fan such as a sirocco fan.

Further, in the present embodiment, the entire area from one end to the other end of the passage 33 is partitioned by a single partition 38, and the first partition passage 33A and the second partition passage 33B are completely separated. However, a part of the passage may be partitioned by a partition 38.

In the above-described embodiment, the fans 36 and 37 are provided only on the intake port 32 side, but the fan may also be provided on the exhaust port 34 side. When a fan is provided on the intake port 32 side, air can be pumped toward the multi-cyclone filter, and it is not necessary to provide a separate fan for the multi-cyclone filter.

For example, as shown in FIG. 10D, the partition portion 38 may be installed so as to partition the passage 33 from the intake port 32 to the filter 35. That is, it may be arranged so that the pressure loss due to the air guided to the passage 33 by the first fan 36 and the second fan 37 interfering in the passage can be reduced. Further, although the partition portion 38 may be a flat plate-like body, it is preferable that the partition portion 38 is provided with a rectifying structure such as smooth unevenness on the surface in order to avoid the occurrence of separation flow.

By adopting such a configuration, a thin air purification device 30 can be configured. Further, if an adsorption filter such as a non-woven fabric or a metal mesh is used as the filter 35, maintenance such as filter replacement and cleaning is required on a regular basis, but when a centrifugal multi-cyclone filter is used, maintenance is required for a long period of time. It becomes unnecessary.

Further, by using the pipe body 31 which is formed to have a wide width while maintaining the height of the passage 33, the passage is divided into two or more by a plurality of partition portions 38, and a fan and a filter are provided for each. It is possible to realize an air purification device 30 that is thin and has high processing capacity.

As described above, the tubular body 31 is arranged inside the machining space 210 along the cover member 200 that partitions the machining space 210, and the mist of the coolant floating in the machining space 210 is taken in from the intake port 32 together with the air, and the mist is taken by the filter 35. If the separated air is installed so as to be exhausted from the exhaust port 34 to the processing space 210, it can be arranged inside the processing space 210 along the cover member 200, so that an extra installation space is secured outside the processing space 210. There is no need, and the space existing in the processing space can be effectively used.

Hereinafter, other aspects of the air purification device 30 will be described.
As shown in FIG. 14, the tubular body 31 is arranged on the upper ceiling of the processing space 210 along the cover member 200 that partitions the processing space 210, and the processing space is provided through the first opening 220 formed in the cover member 200. The coolant mist floating in 210 is taken in together with the air from the intake port 32, and the air separated by the filter is exhausted from the exhaust port 34 to the processing space 210 through the second opening 230 formed in the cover member 200. It may be configured to do so.

Since it can be arranged outside the processing space 210 along the cover member 200, it can be easily installed even when the surrounding space required for installation is limited. An opening may be formed in the ceiling in order to collect the coolant dripping from the drain port provided in the air purification device 30 into the coolant tank 8. Further, if necessary, a pipe for guiding the coolant dripping from the drain port along the inner wall of the cover member 200 to the coolant tank 8 may be installed.

The pipe body 31 can be installed on either the inner wall portion or the outer wall portion of the processing space 210 along the cover member 200 that partitions the processing space 210, and can be installed on the side wall other than the ceiling wall.

As shown in FIGS. 11A to 11D, it is preferable that the side surface of each pipe body 31 is provided with a connecting mechanism 40 for connecting to the side surface of the other pipe body 31. By connecting the tube 31 on the side surface via the connecting mechanism 40, it is possible to increase the processing capacity while maintaining the thinness of the device.

As the connecting mechanism 40, for example, an engaging projection 41 having a T-shaped cross section attached to one side surface of the tubular body 31 along the longitudinal direction, and an engaging projection 41 attached to the opposite side surface of the tubular body 31 along the longitudinal direction. It can be composed of an engaging claw 42 having a C-shaped cross section that engages with.

As shown in FIG. 12, an electrostatic precipitator filter can also be adopted as the filter 35. In this case, the fans 36 and 37 are preferably installed on the downstream side of the electrostatic precipitator filter 35.

Since the clean air from which the mist has been removed by the electrostatic precipitator filter 35 is exhausted from the exhaust port 34 by the fans 36 and 37 installed on the downstream side thereof, the mist does not adhere to the fans 36 and 37. At least the fans 36 and 37 do not require maintenance for a long period of time. Even when the electrostatic precipitator filter 35 is used, the point that the drain tank and the drain port are formed is the same as that of the above-described embodiment.

As shown in FIGS. 13A and 13B, one air purification device 30 can be configured by one pipe 31 without partitioning the pipe 31 by a partition portion. In this case as well, it goes without saying that the processing capacity can be increased by connecting the plurality of pipes 31 via the connecting mechanism as shown in FIG.

Although various aspects of the air purification device 30 have been described above, it goes without saying that any one of the embodiments can be combined.

As described above, the machine tool according to the present invention includes the air purifying device 30 of any of the above-described embodiments, the cover member 200 that partitions the processing space 210 for processing the work, and the coolant discharge that discharges the coolant into the processing space 210. It has a part. That is, the drain pan 39, the drain port 39h, and the drain pipe serve as the coolant discharge portion.

Although the embodiments and embodiments of the present invention have been described above, the disclosure contents may be changed in the details of the configuration, and changes in the combinations and orders of the elements in the embodiments and embodiments have been requested. It can be realized without departing from the scope and idea of the present invention.

As described above, according to the present invention, it is possible to realize a mist recovery system for a machine tool using an inexpensive mist collector, which does not require maintenance such as cleaning for a long period of time.

1: Bed 2: Table 3: Pallet 4: Column 5: Spindle head 6: Tool holder 7: Tool 8: Coolant tank 8F: Drum filter 9: Tip conveyor 10: Work piece (workpiece)
11: Chips 12: Collection container 20: Coolant nozzle 30: Air purification device 31: Pipe 32: Intake port 33: Passage 34: Exhaust port 35: Filter 36: First fan 37: Second fan 38: Partition 39: Drain pan 39h: Drain port 40: Connecting mechanism 41: Engaging protrusion 42: Engaging claw 100: Machine tool 200: Cover member 210: Processing space 500: Mist collection system 51: Exhaust duct 52: Air supply duct 53: Fan 54: Mist collector 55: Exhaust port 56: Air supply port 510: Gas introduction part 520: Containment part 530: Gas-liquid mixing part (first gas-liquid mixing part)
540: Gas-liquid mixing section (second gas-liquid mixing section)
550: Gas-liquid separation part

Claims (6)

A gas introduction part that introduces mist generated in the processing space where the work is processed together with air,
A storage unit that contains liquid for collecting mist,
By guiding the air containing the mist introduced into the gas introduction portion along the first guide wall and blowing it toward the liquid, the first guide wall and the first guide wall are opposed to each other in the liquid. The liquid is wound up in a space partitioned by a first facing wall extending from the surface toward the upper space and collides with the first facing wall to generate a swirling flow to mix gas and liquid, and the mist is mixed with the liquid. The first gas-liquid mixing part that absorbs into
A gas discharge part for returning the air after gas-liquid mixing to the processing space, and
Mist collector equipped with. The air containing the mist flowing from the first gas-liquid mixing portion on the upper end of the first facing wall is partitioned by the first facing wall and the second guide wall arranged to face the first facing wall. The mist collector according to claim 1, further comprising a second gas introduction portion that guides along the space and blows toward the liquid. By guiding the air containing the mist introduced into the second gas introduction portion along the first guide wall and blowing it toward the liquid, the second guide wall and the second guide wall face each other. In a space partitioned by a second facing wall extending from the liquid toward the upper space, the liquid is wound up to generate a swirling flow, gas-liquid is mixed, and the mist is absorbed by the liquid. The mist collector according to claim 2 , further comprising a gas-liquid mixing section of the above. Any of claims 1 to 3, wherein the liquid is a coolant used in the processing space, and the liquid is provided with a reflux path for returning the liquid increased by the recovered mist to a coolant tank arranged in the processing space. mist collector described. The mist collector according to any one of claims 1 to 4,
A cover member that partitions the processing space for processing the work,
A machine tool including a coolant discharge unit that discharges coolant into the processing space. The inside of the pipe is divided into multiple partition passages by a partition,
An intake port is formed on one end side of each partition passage and an exhaust port is formed on the other end side.
Each partition passage is provided with a fan that guides air from the intake port to the exhaust port.
The machine tool according to claim 5, further comprising an air purifying device in each partition passage, which is provided with a filter for removing coolant mist from the air guided to each partition passage by each fan.

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