JP6836684B1 - Air purification equipment and machine tools - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compact and expandable air purification device while removing mist containing a coolant component vaporized by processing heat. An air purification device that guides a mist of coolant generated in a processing space for processing a work together with air to remove the mist, and has an intake port 32 formed on one end side and an exhaust port on the other end side. A pipe body 31 in which 34 is formed and an air passage is formed from the intake port to the exhaust port, a filter 35 installed in the passage, and an exhaust port installed in the passage and from the intake port to the exhaust port. A plurality of fans including a first fan 36 and a second fan 37 for guiding air toward the air are provided, and at least a part of the passage includes a first partition passage and a second partition passage partitioned by a partition portion. The first fan guides air to the first partition passage, and the second fan guides air to the second partition passage. [Selection diagram] Fig. 5

Description

The present invention relates to an air purification device that guides a mist of coolant generated in a processing space for processing a work together with air to remove the mist.

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.

In Patent Document 1, in order to remove the mist-like coolant that fills the processing space, an exhaust duct is provided in the cover member that partitions the processing space, and a mist collector that separates and removes the mist discharged together with the air through the exhaust duct is provided. An oil mist control system has been proposed in which the air that has been installed and purified by removing the mist with a mist collector is circulated and supplied to the processing space via an air supply duct.

More specifically, it is composed of a machine such as a processing machine and a cleaning machine installed in a factory and a mist collector provided in the vicinity of this machine with a switching means such as a damper, and is used for suction between the machine and the mist collector. The hose is connected to the discharge hose, and the mist collector is provided with an exhaust hose. The oil mist from the machine is guided to the mist collector by the suction hose, and the mist collector is guided to the mist collector. By circulating the purified air to the machine with a discharge hose and guiding it to the machine's processing part, it is possible to reuse this clean air, and if necessary, exhaust this clean air under the control of the switching means. It is characterized in that it can be guided to a machine for use and exhausted into a factory or the like.

However, a mist collector as described in Patent Document 1 frequently requires complicated maintenance, which requires a large amount of man-hours, and therefore, an air purification device that is maintenance-free for a long period of time has been desired.

Further, since the oil mist control system described in Patent Document 1 has a large-scale configuration and requires a sufficient installation area, a compact air purification device that can be installed in a limited space is desired. It was.

For example, it is conceivable to construct a small air purification device having the same processing capacity by using a plurality of small fans instead of the large fans that have been used in the past. The air flow guided by the fan was obstructed by interference, and there was a risk that the energy efficiency required for blowing air would decrease.

In Patent Document 2, in order to avoid such interference, a box-shaped unit main body, a plurality of centrifugal fans provided in the unit main body with the rotation axis direction substantially vertical, and an outer circumference of the centrifugal fan are described. A ceiling-embedded type equipped with a heat exchanger provided in the unit body so as to surround the unit and an interference suppressing means for suppressing the flow of air blown from a plurality of adjacent centrifugal fans from interfering with each other. Air conditioner has been proposed.

In the air conditioner, in order to avoid interference between the air flows guided by the centrifugal fans, a partition plate having an uneven surface is installed at the center of both centrifugal fans as an interference suppressing means. It is configured to avoid the interference of the air flow guided by the centrifugal fan by the partition plate and to avoid the loss due to the separation flow due to the unevenness provided on the surface of the partition plate.

Japanese Unexamined Patent Publication No. 2006-88052 Japanese Unexamined Patent Publication No. 2004-301398

The air conditioner disclosed in Patent Document 2 described above is a ceiling-embedded air conditioner having a predetermined size, and its main purpose is to adjust the air temperature with a heat exchanger, which is called mist removal. It was not a functional device, and could not meet the expandability required as the amount of mist processed increased.

An object of the present invention is to provide a small and expandable air purifier and a machine tool equipped with an air purifier while removing mist containing a coolant component vaporized by processing heat.

In order to achieve this object, the first characteristic configuration of the air purification device according to the present invention is an air purification device that guides the mist of the coolant generated in the processing space for processing the work together with the air and removes the mist. The inside of the pipe body is partitioned into a plurality of partition passages by a partition portion, an intake port is formed on one end side of each partition passage and an exhaust port is formed on the other end side, and air is supplied from the intake port to the exhaust port. Each partition passage is provided with a guiding fan, and each partition passage is provided with a filter for removing coolant mist from the air guided to each partition passage by each fan .

The air passage formed inside the pipe body is partitioned by a partition portion, and a first partition passage and a second partition passage are formed. Air is guided from one end of the pipe body to the first partition passage by the first fan, and air is guided to the second partition passage by the second fan, and after the mist is removed by the filter installed in the passage, the pipe body It is exhausted from the other end. The air flow guided by the first fan and the air flow guided by the second fan are partitioned by the partition and guided to the filter without interference. A first partition passage and a second partition passage are formed inside the pipe body, and a fan for guiding air is installed in each of them, so that a thin and compact air purification device can be realized in the height direction of the partition wall.

The second feature configuration is that, in addition to the first feature configuration, the side surface of each pipe body is provided with a connecting mechanism for connecting to the side surface of the other pipe body, and the pipe body is connected to the side surface via the connecting mechanism. By connecting with, the processing capacity can be increased while maintaining the thinness of the device.

In the third feature configuration, in addition to the first or second feature configuration, the tubular body is arranged outside the processing space along the cover member that partitions the processing space, and is formed on the cover member. A second opening formed in the cover member from the exhaust port by sucking air of coolant floating in the processing space through the opening of 1 together with air from the intake port and separating the mist by the filter. The point is that it is configured to exhaust air to the processing space through the portion.

Since it can be placed outside the processing space along the cover member, it can be easily installed even if the space required for installation is limited, and air containing mist is guided to the intake port from the first opening formed in the cover member. Purified air can be circulated and supplied from the exhaust port to the second opening formed in the cover member.

In the fourth feature configuration, in addition to the first or second feature configuration, the tubular body is arranged inside the processing space along the cover member that partitions the processing space, and the mist of coolant floating in the processing space. Is taken in from the intake port together with air, and the air from which the mist is separated by the filter is exhausted from the exhaust port to the processing space.

Since it can be arranged inside the processing space along the cover member, it is not necessary to secure an extra installation space outside the processing space, and the space existing in the processing space can be effectively utilized.

In the fifth characteristic configuration, in addition to the third or fourth characteristic configuration, a drain port for discharging the separation liquid separated by the filter is formed in the pipe body, and the separation liquid discharged from the drain port is formed. The point is that it is configured to return to the coolant tank arranged in the processing space.

The mist collected by the filter provided in the pipe body and liquefied is discharged from the drain port formed in the pipe body and returned to the coolant tank arranged in the processing space. No need to install.

The sixth feature configuration is that, in addition to any of the first to fifth feature configurations, a centrifuge filter is adopted as the filter, and the fan is installed on the upstream side of the centrifuge filter. It is in.

The air sucked into the tube by the fan is pumped together with the mist to the centrifugal filter without causing a large pressure loss, and the mist is centrifuged.

In the seventh feature configuration, in addition to any of the first to fifth feature configurations, an electrostatic precipitator filter is adopted as the filter, and the fan is installed on the downstream side of the electrostatic precipitator filter. There is.

Since the clean air from which the mist has been removed by the electrostatic precipitator filter is exhausted from the exhaust port by the fan installed on the downstream side, the mist does not adhere to the fan, and at least for the fan for a long period of time. No maintenance required.

The characteristic configuration of the machine tool according to the present invention is an air purification device having any of the above-mentioned first to seventh characteristic configurations, a cover member for partitioning a machining space for machining a work, and a coolant discharged into the machining space. The point is that it is provided with a coolant discharge unit.
The characteristic configuration of the machine tool according to the present invention includes an air purification device having any of the above-mentioned first to seventh characteristic configurations and a second air purification device having a mechanism for winding up the coolant liquid level and collecting mist. A point is that a cover member for partitioning a processing space for processing a work and a coolant discharging portion for discharging coolant into the processing space are provided.

According to the present invention, it is possible to provide a small and expandable air purifying device and a machine tool equipped with an air purifying device while removing mist containing a coolant component vaporized by processing heat.

It is explanatory drawing of the front view of the machine tool equipped with the air purification device. It is explanatory drawing of the side view of the machine tool equipped with the air purification device. It is explanatory drawing of the plan view of the machine tool equipped with the air purification apparatus. Explanatory drawing of the machine tool arranged in the machining space, (a) is an explanatory view showing the basic configuration of the machine tool viewed from the side, and (b) is an explanatory view showing the basic configuration of the machine tool viewed from the front. Is. (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, and (d) shows another aspect. It is explanatory drawing of the plane view of an air purification apparatus. (A) to (d) are explanatory views of the connection mechanism of the 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. Another embodiment is shown, and it is explanatory drawing of the front view of the machine tool. Another embodiment is shown, and it is explanatory drawing of the plan view of a machine tool. It is a flow chart which shows another embodiment and shows the processing procedure of a machine tool. Another embodiment is shown, and it is explanatory drawing of the mist collector.

Hereinafter, a machine tool equipped with an air purification device will be described based on the drawings.
4 (a) and 4 (b) 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. A horizontal machining center having 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, and is around the machine tool 100 as shown by a broken line. Is covered with the cover member 200. Although not shown, the cover member 200 is provided with a door that can be opened and closed for loading or unloading the work 10.

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.

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.

A coolant nozzle 20 is provided on the spindle head 5. For cooling and cleaning from the coolant nozzle 20 toward the machined part 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 the fluid of This is because the relative position between the work and the tool 7 may be mutated due to the thermal displacement caused by the temperature rise due to the cutting heat, and the machining accuracy of the work may be lowered.

When the work 10 is machined, a part of the coolant injected from the coolant nozzle 20 is vaporized by the cutting heat, becomes fine particles, fills the machining space, and floats as mist. Therefore, the machine tool 100 removes the mist. An air purification device 30 is provided for this purpose.

As shown in FIGS. 1 to 3, 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. 5A to 5C, 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 for guiding 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. 5D, 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. 9, the tubular body 31 is arranged on the ceiling upper portion 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. 6A to 6D, 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. 7, 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. 8A and 8B, one air purifying 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.

In addition to the air purification device 30 of the plurality of embodiments described above, the machine tool 100 may further be provided with the mist recovery system 500 shown below.

As shown in FIGS. 10 and 11, the mist recovery system 500 includes an exhaust duct 51 that exhausts the coolant mist 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 a suction duct 51 that is provided 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. 13, in the mist collector 54, the 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 the 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. 12, 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.

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 machine tool equipped with a compact and expandable air purifying device and an air purifying device while removing mist containing a coolant component vaporized by processing heat.

1: Bed 2: Table 3: Pallet 4: Column 5: Spindle head 6: Tool holder 7: Tool 8: Coolant tank 9: Tip conveyor 10: Work piece (work)
11: Chips 12: Collection container 20: Coolant nozzle 100: Machine tool 200: Cover member 210: Processing space 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 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 (9)

An air purification device that removes mist by guiding the mist of coolant generated in the processing space where the work is processed together with air.
The inside of the pipe body 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.
An air purification device equipped in each partition passage with a filter that removes coolant mist from the air guided to each partition passage by each fan. The air purification device according to claim 1, wherein the side surface of each pipe body is provided with a connecting mechanism for connecting to the side surface of another pipe body. The tubular body is arranged outside the processing space along a cover member that partitions the processing space, and a mist of coolant floating in the processing space through a first opening formed in the cover member is blown together with air. Claim 1 is configured to take in air from an intake port and exhaust air from which mist is separated by the filter from the exhaust port to the processing space through a second opening formed in the cover member. Or the air purification device according to 2. The pipe body is arranged inside the processing space along a cover member that partitions the processing space, and air of coolant floating in the processing space is taken in from the intake port together with air, and the mist is separated by the filter. The air purification device according to claim 1 or 2, which is configured to exhaust air from the exhaust port to the processing space. A claim in which a drain port for discharging the separated liquid separated by the filter is formed in the pipe body, and the separated liquid discharged from the drain port is refluxed to a coolant tank arranged in the processing space. The air purification device according to 3 or 4. The air purification device according to any one of claims 1 to 5, wherein a centrifugal filter is adopted as the filter, and the fan is installed on the upstream side of the centrifugal filter. The air purification device according to any one of claims 1 to 5, wherein an electrostatic precipitator filter is adopted as the filter, and the fan is installed on the downstream side of the electrostatic precipitator filter. The air purification device according to any one of claims 1 to 7.
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 air purification device according to any one of claims 1 to 7.
A second air purification device that has a mechanism to wind up the coolant level and collect the mist,
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.

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