JP2009012103A - Cutting chip filtration device and method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cutting chip filtration device and method allowing improvement of filtration capacity by sufficiently securing contact time of chip mixed air and a liquid without using a filter and increasing the size of the device. <P>SOLUTION: This filtration device 1 is provided with: a tank 2 partitioned into a plurality of chambers by each partition plate 18-21, constituted so that the tank is filled with a liquid in a prescribed height and the liquid flows between chambers, and maintained with a sealed state; a blow pipe 10 forcedly feeding the chip mixed air to the inside 34 of the liquid in the first filtration chamber 3; a first communication pipe 11 for communicating an air layer 33 of the first filtration chamber 3 with the inside 35 of the liquid in the second filtration chamber 4; a second communication pipe 12 for communicating an air layer 36 of the second filtration chamber 4 with an air layer 37 of a first separation chamber 6; and an air discharge pipe 13 for communicating an air layer 39 of a third separation chamber 8 with the outside of the tank 2. As a result, the filtration capacity is improved by sufficiently securing the contact time of the chip mixed air and the liquid without increasing the size of the device 1. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a chip filtering device and a chip filtering method for removing chips from chip-mixed air into which chips generated when machining a synthetic resin material or the like are mixed.

In general, there are two filtering methods described below as a method of filtering and removing chips from a chip-mixed air into which chips generated when machining a synthetic resin material or the like are mixed.
As a first filtration method, a negative pressure is generated in a tank filled with liquid, and the chip-mixed air is drawn into the liquid and bubbled by a filter to filter the chips from the air. The removal method is adopted.
Moreover, as a 2nd filtration method, the method of blowing and filtering the chip mixing air in the liquid in a tank and filtering and removing a chip from the air is employ | adopted.

Therefore, when filtering the chips with the liquid, it is necessary to ensure a sufficient contact time between the air containing the chips and the liquid, and the finer the bubbles, the better the filtering effect.
However, in the former first filtration method, the chip-mixed air drawn into the liquid immediately rises, so that a certain level of water is required to ensure the contact time between the chip-mixed air and the liquid. Necessary to increase the size of the main body. In addition, it is necessary to use a filter because it is necessary to make bubbles finer. However, if a fine filter is used, the flow of air mixed with chips is hindered, resulting in insufficient suction capability. If a coarse filter is used to secure the filter, the filtration ability becomes insufficient this time, and the filtration ability is affected by the selection of the filter, and many problems still remain.

  On the other hand, in the latter second filtration method, when the chip-mixed air is blown into the liquid in the tank, the liquid overflows so as to be pushed out by the momentum of the chip-mixed air. Therefore, if the water level is lowered in order to prevent the overflow of the liquid, a sufficient contact time between the swarf-mixed air and the liquid cannot be ensured, and the filtration capacity is insufficient. On the other hand, in order to keep the water level as it is so as not to reduce the filtration capacity, it is necessary to increase the height of the tank to prevent the liquid from overflowing, and the apparatus main body becomes large. As described above, there is a limit in improving the filtration capacity to the maximum without adjusting the water level and the flow rate of air to be blown (air pressure) or the like to increase the size of the tank.

Patent Document 1 discloses that one filtering step of filtering the dust by allowing the outside air containing the bubbled dust to pass through the filter, and the dust while the outside air containing the bubbled dust moves upward in the water. And the other filtration step of dissolving the water in the water, causing convection in the water by the upward movement of the bubbled outside air, and the water convectively circulating to adhere to the filter by passing through the filter There is disclosed a dust filtering method to which a step of removing dust is added.
JP-A-8-290030

  However, in the invention of Patent Document 1, in the other filtration process in which the dust is dissolved in the water while the outside air including the bubbled dust moves upward in the water, the contact time between the outside air and the water is short. May not be completely dissolved in water, and the process of removing dust adhering to the filter by the water passing through the filter by the convective circulation of water is adopted. If the filter does not dissolve completely in the water and the dust remains in the water and passes through the filter by convective circulation, the action of removing the dust from the filter does not work, and the filter adheres to the filter and eventually becomes clogged. There is a risk that it will not play its role.

  The present invention has been made in view of the above points, and without using a filter, without increasing the size of the apparatus, ensures sufficient contact time between the air containing the chips and the liquid, thereby improving the filtration capacity. An object of the present invention is to provide a chip filtering device and a chip filtering method.

In order to solve the above problems, the chip filtration apparatus of the present invention is partitioned into a filtration chamber and a separation chamber by a plurality of partition plates extending in the vertical direction, and filled with liquid for filtering the chip at a predetermined height. And a tank that is configured to allow liquid flow between the chambers and that is maintained in a sealed state, a blow-out pipe that pumps chip-mixed air into the liquid in the first filtration chamber in the tank, and A first communication pipe that communicates the air layer of the first filtration chamber and the liquid of the second filtration chamber; a second communication pipe that communicates the air layer of the second filtration chamber and the air layer of the separation chamber; An air discharge pipe that communicates the air layer of the separation chamber and the outside of the tank, and a plurality of small holes are formed at the ends of the blowing pipe and the first communication pipe that are immersed in the liquid. It is characterized by that.
In addition, the chip filtration method of the present invention is a chip for filtering chip-mixed air containing chips generated during processing through a tank that is partitioned into a filtration chamber and a separation chamber and filled with liquid. In the filtration method, chip-mixed air is pumped into the liquid in the filtration chamber, and the liquid in the filtration chamber is agitated to form a foam group, and then the foam group is removed from the filtration chamber to the separation chamber. The bubble group is separated into liquid and clean air in the separation chamber, and then the clean air is discharged to the outside of the separation chamber.
Thereby, since the contact time between the chip-mixed air and the liquid can be sufficiently ensured without increasing the size of the apparatus main body, the filtration capacity can be improved. In addition, since no filter is used, problems such as filter clogging do not occur.
Various aspects of the chip filtration apparatus and the chip filtration method of the present invention and their actions will be described in detail in the following section (Invention Aspect).

(Aspect of the Invention)
In the following, some aspects of the invention that can be claimed in the present application (hereinafter sometimes referred to as “claimable invention”) will be exemplified and described. In addition, each aspect is divided into a term like a claim, it attaches | subjects a number to each term, and is described in the format which quotes another term as needed. This is for the purpose of facilitating the understanding of the claimable invention, and is not intended to limit the combinations of the constituent elements constituting the claimable invention to those described in the following sections. In other words, the claimable invention should be construed in consideration of the description, embodiments, etc. accompanying each section, and as long as the interpretation is followed, there may be embodiments in which other constituent elements are added to the aspects of each section. In addition, an aspect in which the constituent elements are deleted from the aspect of each item can be an aspect of the claimable invention. In the following items, each of items (1) to (5) and (13) corresponds to each of claims 1 to 6.

(1) A chip filtering device for filtering chip-containing air containing chips generated during processing, wherein the chip filtering device is separated from the filtration chamber by a plurality of partition plates extending in the vertical direction inside. A tank which is partitioned into chambers and filled with a liquid for filtering chips at a predetermined height and which is capable of liquid flow between the chambers and is maintained in a sealed state; A blow-out pipe that is pumped into the liquid in the first filtration chamber, a first communication pipe that connects the air layer in the first filtration chamber and the liquid in the second filtration chamber, and the air layer in the second filtration chamber And a second communication pipe that communicates the air layer of the separation chamber, and an air discharge pipe that communicates the air layer of the separation chamber and the outside of the tank, each of the blow-out pipe and the first communication pipe A chip filtration device characterized in that a large number of small holes are formed at an end immersed in a liquid.
Therefore, in the chip filtration apparatus according to item (1), when the chip-mixed air is pumped into the liquid in the first filtration chamber from a large number of small holes provided at the end of the outlet pipe, the liquid level in the tank is changed. The waves in the first filtration chamber and the second filtration chamber are agitated so as to largely jump as a whole, and the liquid in the first filtration chamber becomes a bubble group and jumps up to the vicinity of the upper end of the tank. Subsequently, the foam group is guided into the liquid in the second filtration chamber by the first communication pipe, and becomes a finer foam by the numerous small holes provided at the end of the first communication pipe, and again comes into contact with the liquid. By doing so, the chips become a foam group in which almost all the chips are filtered by the liquid, and the foam group jumps again to the vicinity of the upper end of the tank. Subsequently, the bubbles are guided to the air layer of the separation chamber by the second communication pipe, and after flowing down to the liquid surface and pulverized, clean air is separated from the liquid, and the clean air is It is discharged to the outside through the air discharge pipe.

(2) The air layer of the separation chamber is provided with a collision plate that collides a bubble group flowing out from the second communication pipe at a position facing the end of the second communication pipe. The chip filtration apparatus as described in (1) term.
Therefore, in the chip filtration device of item (2), the bubbles that have flowed out from the end of the second communication pipe are crushed by colliding with the collision plate, and only the liquid flows down, and the separated clean air Is discharged to the outside from the air discharge pipe.

(3) In the separation chamber, a plurality of separation chambers are formed by a plurality of partition plates extending in the vertical direction so that the air layers of the chambers communicate with each other and liquid flow between the chambers is possible. The chip filtration apparatus according to item (1) or (2), wherein the chip filtration device is partitioned into two.
Therefore, in the chip filtration apparatus according to item (3), the separation chamber is partitioned into a plurality of separation chambers by a plurality of partition plates extending in the vertical direction, so that the chip-mixed air is contained in the liquid in the first filtration chamber. When pumped, the liquid level in the separation chamber can be prevented from jumping violently, and the liquid is prevented from flowing out from the air discharge pipe.

(4) Of the plurality of separation chambers provided by partitioning the separation chamber, the air layer of each separation chamber other than the separation chamber communicated with the second communication pipe extends in a direction facing the liquid surface, The chip according to (3), wherein a plurality of regulating plates that regulate the splashing of the air are arranged at intervals upward from a position close to the liquid level so as not to regulate the flow of air. Filtration device.
(5) Each of the restriction plates is disposed closest to the liquid level and extends in a substantially horizontal direction, and a plurality of the restriction plates are disposed above the horizontal restriction plate and tilted toward the liquid level. The chip filtration apparatus according to (4), wherein each of the inclination regulating plates is formed with an air passage opening.
Therefore, in the chip filtration apparatus according to the items (4) and (5), the air layers of the separation chambers other than the separation chamber to which the second communication pipe communicates among the plurality of separation chambers provided by partitioning the separation chamber. Since a plurality of horizontal restriction plates and a plurality of inclination restriction plates are arranged, it is possible to further prevent the liquid level in the separation chamber from jumping violently. Moreover, since each air passage opening is formed in each inclination regulating plate, air flow is promoted.

(6) Any one of the items (1) to (5), characterized in that a discharge pipe from a suction device that sucks the chip-mixed air is connected to the base end portion of the blowing pipe through an air gun. The chip filtration apparatus of crab.
Therefore, in the chip filtration apparatus of item (6), the chip-mixed air sucked by the suction device by the air gun can be pumped into the liquid in the first filtration chamber with a predetermined air pressure.
When the tank dimensions are approximately 30 cm (width) × approximately 40 cm (length) × approximately 40 cm (height) and the liquid level is set to approximately 15 cm, the liquid in the first filtration chamber The air pressure fed to is set to 0.8 MPa.

(7) The chip filtration apparatus according to any one of (1) to (6), wherein a height of the air discharge pipe is substantially the same as a height of the tank.
Therefore, in the chip filtration apparatus of the item (7), the liquid in the tank is prevented from flowing out through the air discharge pipe.

(8) The height of the liquid level in the tank is set within a range of approximately 30% to 50% with respect to the height of the tank. The chip filtration apparatus according to any one of the items).
Therefore, in the chip filtration apparatus of item (8), when the chip-mixed air is pumped into the liquid in the first filtration chamber at a predetermined air pressure, the liquid in the first and second filtration chambers becomes a bubble group. Will jump up to near the upper end of the tank.

(9) Both the first and second communication pipes are formed in a substantially inverted U shape, and one end of the first communication pipe corresponds to the first filtration chamber of the lid that maintains the sealed state of the tank. The other end of the first communication pipe is disposed in the liquid in the second filtration chamber, and the one end of the second communication pipe is The lid is fixed to an opening provided at a position corresponding to the second filtration chamber, and the other end of the second communication pipe is disposed in an air layer of the separation chamber. The chip filtration apparatus according to any one of (1) to (8).
Therefore, in the chip filtration apparatus according to item (9), when the chip-mixed air is pumped into the liquid in the first filtration chamber at a predetermined air pressure, it jumps up to the vicinity of the substantially upper end of the tank in the first filtration chamber. The bubble group can be sequentially guided from the first filtration chamber to the second filtration chamber and the separation chamber.

(10) The cut according to any one of (1) to (9), wherein the air discharge pipe is connected to an opening provided at a position corresponding to the separation chamber of the lid. Powder filtration device.
Therefore, in the chip filtration apparatus according to item (10), the clean air separated in the separation chamber can be easily discharged to the outside from the air discharge pipe.

(11) The chip filtration apparatus according to any one of (1) to (10), wherein the chip is a chip generated when a synthetic resin material is machined.
Therefore, in the chip filtration apparatus according to item (11), it is possible to remove chips from the chip-mixed air into which chips generated when machining the synthetic resin material are mixed.

(12) The chip filtration apparatus according to any one of (1) to (11), wherein the chip filtration apparatus is movable.
Therefore, in the chip filtration apparatus of the item (12), since the chip filtration apparatus can be moved, the handling is very convenient and the use place is not limited.

(13) A chip filtration method in which chip-mixed air containing chips generated during processing is separated into a filtration chamber and a separation chamber and is filtered through a tank filled with liquid. The mixed air is pumped into the liquid in the filtration chamber, and the liquid in the filtration chamber is agitated to form a bubble group. After that, the bubble group is guided from the filtration chamber to the separation chamber, and the separation chamber The chip filtration method, wherein the foam group is separated into liquid and clean air, and then the clean air is discharged to the outside of the separation chamber.
Therefore, in the chip filtration method of the item (13), since the chips are not filtered by the filter, problems such as filter clogging do not occur.

  According to the present invention, there is provided a chip filtration apparatus capable of improving the filtration capacity by sufficiently securing the contact time between the chip-mixed air and the liquid without using a filter and without enlarging the apparatus. A chip filtration method can be provided.

Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to FIGS.
The chip filtration apparatus 1 according to the embodiment of the present invention is intended to remove chips from chip-mixed air into which chips generated when machining a synthetic resin material are mixed. As shown in FIG. 2, the first and second filtration chambers 3 and 4 and the separation chamber 5 (first to third separation chambers 6 to 8) are partitioned by a plurality of partition plates 18 to 21 extending in the vertical direction. A tank 2 filled with a liquid for filtering chips at a predetermined height and configured to allow liquid flow between the chambers 3, 4, 6 to 8, and maintained in a sealed state by a lid 15. The blow-out pipe 10 that pumps the chip-mixed air into the liquid 34 in the first filtration chamber 3 in the tank 2, and the air layer 33 in the first filtration chamber 3 and the liquid 35 in the second filtration chamber 4 are communicated with each other. The first communication pipe 11 communicates with the air layer 37 of the first separation chamber provided by further separating the air layer 36 of the second filtration chamber 4 and the separation chamber 5. A second communicating pipe 12 which is provided with an air discharge pipe 13 communicating with the outside air layer 39 and the tank 2 of the third separation chamber 8 provided further partitions the separation chamber 5.

Moreover, the liquid with which the tank 2 of the chip filtration apparatus 1 which concerns on embodiment of this invention was filled has the height of the liquid level h in the range of 30%-50% with respect to the height of the tank 2. Is set to a predetermined value. In the most preferred embodiment, the height of the liquid level h is set to approximately 40% with respect to the height of the tank 2.
When explaining the present chip filtration device 1 according to the embodiment of the present invention, chip-mixed air is introduced, the chip is filtered by liquid, and finally clean air is discharged to the outside. In the series of flows, the following description will be given with the side where the blowout pipe 10 is disposed as the upstream side of the flow and the side where the air discharge pipe 13 is disposed as the downstream side of the flow.
Further, in the most preferred embodiment, as will be described in detail later, the separation chamber 5 is arranged upstream by arranging the partition plates 20 and 21 at intervals along the longitudinal direction of the rectangular parallelepiped tank 2. The first separation chamber 6, the second separation chamber 7 and the third separation chamber 8 are divided into three chambers along the downstream side from the side. The first separation chamber 6, the second separation chamber 7 and the third separation chamber 8 communicate with the air layers 37, 38 and 39, and the liquid in the tank 2 contains the first to third separation chambers 6 to 6. It is configured to be flowable between the eight.

Below, the chip filtration apparatus 1 which concerns on embodiment of this invention is demonstrated in detail based on FIGS. 1-3.
As shown in FIGS. 1 to 3, the tank 2 is formed in a rectangular parallelepiped shape having a predetermined height. A lid 15 is fixed to the upper end opening of the tank 2 via a gasket 16 so that the sealed state in the tank 2 is maintained.
In the tank 2, the first to fourth partition plates 18 to 21 extending in the vertical direction are arranged at substantially equal intervals along the longitudinal direction of the tank 2, whereby the first filtration chamber 3, The second filtration chamber 4, the first separation chamber 6, the second separation chamber 7, and the third separation chamber 8 are partitioned into five chambers. These are the first filtration chamber 3, the second filtration chamber 4, and the first separation chamber. 6. The capacities of the second separation chamber 7 and the third separation chamber 8 are all set to substantially the same capacity.
Each of the partition plates 18 to 21 is formed to have substantially the same height as that of the tank 2 and substantially the same width as the width of the tank 2 (see FIG. 2). In addition, a rectangular notch 25 (FIG. 3) is provided at substantially the center in the width direction of the lower end of each partition plate 18-21 so that the liquid in the tank 2 can flow between the chambers 3, 4, 6-8. Each) is formed.

As shown in FIGS. 1 and 3, among the two partition plates 20 and 21 that partition the separation chamber 5 into three chambers, a first separation chamber 6, a second separation chamber 7, and a third separation chamber 8, The upstream partition plate 20 is formed with an air passage port 26 that allows the air layer 37 of the first separation chamber 6 and the air layer 38 of the second separation chamber 7 to communicate with each other. The air passage port 26 is formed by providing a rectangular notch that is elongated in the width direction at a substantially central portion in the width direction at the upper end of the partition plate 20.
Further, the partition plate 21 is formed with an air passage port 27 for communicating the air layer 38 of the second separation chamber 7 and the air layer 39 of the third separation chamber 8. The air passage port 27 is formed in a rectangular shape that is elongated in the width direction, at a substantially central portion in the width direction of the partition plate 21, a horizontal restriction plate 51 a disposed at the lowermost position of the third separation chamber 8, and directly above It forms between the inclination control board 51b located in this.

As shown in FIGS. 1 and 2, the blow pipe 10 is inserted into a blow pipe opening 40 provided at a position corresponding to the first filtration chamber 3 at a substantially central portion in the width direction of the lid body 15. The flange portion 30 of the outlet pipe 10 is fixed to the periphery of the outlet 40 for the outlet pipe of the lid 15 in a state where the distal end portion is disposed at a position close to the bottom wall surface of the first filtration chamber 3. A large number of small holes 31 penetrating the outer peripheral wall are formed in the distal end portion 10 a immersed in the liquid of the blow-out pipe 10.
In addition, an air gun 32 is connected to a base end portion of the blowing pipe 10 located outside the tank 2, and a lead-out pipe led out from a suction device (not shown) for sucking chips mixed air into the air gun 32. 33 is connected. Although the air pressure from the air gun 32 depends on the capacity of the tank 2 and the height of the liquid level h, in the present embodiment, the dimensions of the tank 2 are approximately 30 cm (width) × approximately 40 cm (length) × About 40 cm (height), the height of the liquid level h is set to about 15 cm, and the air pressure is set to 0.8 MPa.

As shown in FIG. 1, the first communication pipe 11 communicates the air layer 33 of the first filtration chamber 3 in the tank 2 and the liquid 35 of the second filtration chamber 4, and has a substantially inverted U shape. It is formed in a shape. In addition, a large number of small holes 31 penetrating the outer peripheral wall are formed in the downstream end portion 11 a immersed in the liquid 35 of the second filtration chamber 4 of the first communication pipe 11.
As shown in FIG. 2, the lid 15 has two first communication pipe openings 41, 42, and one of the first communication pipe openings 41 corresponds to the first filtration chamber 3. The other first communication pipe opening 42 is formed at a position juxtaposed with the outlet pipe opening 40 in the width direction, and the other first communication pipe opening 41 is downstream of the second filtration chamber 4. Is formed at a position corresponding to.
As shown in FIGS. 1 and 2, the first communication pipe 11 has an upstream end welded to one first communication pipe opening 41 of the lid body 15 and a downstream end thereof. It is inserted and welded to the other first communication pipe opening 42 of the lid 15 so as to be disposed at a position close to the bottom wall surface of the second filtration chamber 4 in the tank 2. As described above, the first communication pipe 11 is welded to the first communication pipe openings 41 and 42 corresponding to the first filtration chamber 3 and the second filtration chamber 4, and is integrated with the lid 15. Has been.

As shown in FIG. 1, the second communication pipe 12 communicates the air layer 36 of the second filtration chamber 4 in the tank 2 with the air layer 37 of the first separation chamber 6. It is formed in a shape.
As shown in FIG. 2, the lid 15 has two second communication pipe openings 43, 44, and one of the second communication pipe openings 43 corresponds to the second filtration chamber 4. The second communication pipe opening 44 is formed downstream of the first communication pipe opening 43 and is formed at a position opposite to the first communication pipe opening 42 in the width direction through the blow pipe opening 40. It is formed at a position corresponding to the first separation chamber 6 on the side.
As shown in FIGS. 1 and 2, the second communication pipe 12 has its upstream end welded to one second communication pipe opening 43 of the lid 15, and its downstream end is It is inserted into and welded to the other second communication pipe opening 44 of the lid 15 so as to be disposed in the air layer 37 of the first separation chamber 6 in the tank 2. The second communication pipe 12 is also welded to the second communication pipe openings 43 and 44 corresponding to the second filtration chamber 4 and the first separation chamber 6, and is integrated with the lid 15. Yes.

  Further, as shown in FIG. 1, the air layer 37 of the first separation chamber 6 in the tank 2 has a downstream end of the second communication pipe 12 at a position facing the downstream end of the second communication pipe 12. A collision plate 50 that collides the foam group flowing out from the section is arranged. The collision plate 50 extends in a direction facing the liquid level h, and an upstream end thereof is fixed to the partition plate 19 and is inclined downward so as to be directed slightly toward the liquid level h toward the downstream side. . The width of the collision plate 50 along the width direction of the tank 2 is set to be slightly longer than the outer diameter of the second communication pipe 12.

Further, the air layers 38 and 39 of the second separation chamber 7 and the third separation chamber 8 in the tank 2 are respectively provided with restriction plates 51 that extend in a direction facing the liquid surface h and restrict the splashing of the liquid. A plurality (four in the present embodiment) are arranged at intervals upward from a position close to the surface h.
Each restricting plate 51 includes a horizontal restricting plate 51a disposed closest to the liquid level h and a plurality of inclined restricting plates 51b disposed above the horizontal restricting plate 51a.

The horizontal regulating plate 51a has an upstream end fixed to the partition plate 20 or 21 and extends in a substantially horizontal direction toward the downstream side, and faces a wall (partition plate 21) facing the downstream end. Alternatively, a gap is provided between the tank 2 and the inner wall surface on the downstream side of the tank 2. Further, the horizontal length of the horizontal regulating plate 51a along the width direction of the tank 2 is formed to be approximately the same as the width of each of the partition plates 18-21.
Each inclination regulating plate 51b has an upstream end fixed to the partition plate 20 or 21, and is inclined downward so as to be slightly directed toward the liquid level h toward the downstream side. A gap is provided between the opposing wall surfaces (the partition plate 21 or the inner wall surface on the downstream side of the tank 2). In addition, the width of the inclination regulating plate 51b along the width direction of the tank 2 is formed to be substantially the same as the width of each of the partition plates 18-21. Further, each of the inclination regulating plates 51b is formed with an elongated rectangular air passage port 52 along the width direction of the tank 2.
In addition, the clearance gap between the downstream edge part of each inclination control board 51b and the opposing wall surface is set much smaller than the clearance gap between the downstream edge part of the horizontal regulation board 51a and the opposing wall surface.

Moreover, as shown in FIG.1 and FIG.2, the air passage port 52 of the inclination control board 51b located in the uppermost part among each inclination control board 51b arrange | positioned at the 2nd separation chamber 7 in the tank 2 is as follows. It is formed on the upstream side (see FIG. 1) and at a position (see FIG. 2) slightly closer to the first communication pipe 11 side in the width direction. Further, the air passage port 52 of the inclination regulating plate 51b located in the middle in the vertical direction is formed on the downstream side (see FIG. 1) and at a position slightly closer to the first communication pipe 11 side in the width direction (see FIG. 2). ing. Furthermore, the air passage port 52 of the inclination regulating plate 51b located at the lowermost position is formed at a position (see FIG. 2) slightly upstream from the first communication pipe 11 side in the width direction (see FIG. 1). ing.
On the other hand, as shown in FIG. 1 and FIG. 2, each inclination restriction plate 51 b arranged in the third separation chamber 8 in the tank 2 is located above and below each inclination restriction plate 51 b arranged in the second separation chamber 7. The air passage ports 52 of the inclination restriction plate 51b located at the uppermost position are slightly shifted toward the second communication pipe 12 side in the width direction (see FIG. 1). (See FIG. 2). Further, the air passage port 52 of the inclination regulating plate 51b located in the middle in the vertical direction is formed at a position (see FIG. 2) slightly upstream (see FIG. 1) and slightly closer to the second communication pipe 12 side in the width direction. ing. Furthermore, the air passage port 52 of the inclination regulating plate 51b located at the lowermost position is formed at a position (see FIG. 2) slightly downstream (see FIG. 1) and slightly closer to the second communication pipe 12 side in the width direction. ing.
Further, the horizontal restriction plate 51a arranged in the second separation chamber 7 and the horizontal restriction plate 51a arranged in the third separation chamber 8 are arranged so that their heights are substantially the same.

An air discharge tube opening 55 is formed at a position of the lid 15 corresponding to the third separation chamber 8. The air discharge pipe 13 is fixed to the air discharge pipe opening 55. The length of the air discharge pipe 13 is substantially the same as the height of the tank 2.
In addition, casters 56 are respectively fixed to the four corners of the back surface of the bottom plate of the tank 2 so that the chip filtration device 1 can be moved. Furthermore, a liquid discharge valve 57 is provided on the upstream side of the bottom plate of the tank 2.

Next, the chip filtration method using the chip filtration apparatus 1 which concerns on embodiment of this invention demonstrated above is demonstrated.
First, chip-mixed air is supplied from the suction device to the air gun 32 through the outlet pipe 33, and the chip-mixed air is supplied by the air gun 32 at a predetermined air pressure at a number of small portions provided at the distal end portion 10 a of the blow-out pipe 10. It is pumped from the hole 31 to the liquid 34 in the first filtration chamber 3.
As a result, the liquid level h in the tank 2 undulates greatly by the air pressure, the liquid in the first filtration chamber 3 and the second filtration chamber 4 is stirred, and the liquid in the first filtration chamber 3 is bubbled. It becomes a group of bubbles and jumps up to the vicinity of the upper end of the tank 2.
Subsequently, the foam group that has bounced up is guided to the liquid 35 in the second filtration chamber 4 by the first communication pipe 11, and is formed by a large number of small holes 31 provided at the downstream end portion 11 a of the first communication pipe 11. By making it into a finer foam and coming into contact with the liquid again, almost all of the chips are dissolved in the liquid to form a filtered foam, and the foam group jumps again to the vicinity of the upper end of the tank 2.
Subsequently, the foam group in which the chips are filtered is guided to the air layer 37 of the first separation chamber 6 by the second communication pipe 12 and collides with the collision plate 50, so that the foam group is crushed and liquid. Air is separated, and the separated liquid flows down along the inclination of the collision plate 50.
Thereafter, the clean air separated from the liquid is separated from the air passage port 26 of the partition plate 20, the air passage ports 52 of the respective inclination regulating plates 51 b disposed in the second separation chamber 7, and the partition plate as indicated by arrows. 21 passes through the air passage ports 27 and the air passage ports 52 of the respective inclination regulating plates 51b disposed in the third separation chamber 8, and is discharged from the air discharge pipe 13 to the outside.

In the second separation chamber 7 and the third separation chamber 8, the inclined restriction plates 51 b and the horizontal restriction plates 51 a are provided, so that the chip-mixed air flows from the numerous small holes 31 of the blow-out pipe 10. When the liquid level h is pumped to the liquid 34 in the first filtration chamber 3, the liquid level h greatly jumps, but the liquid level h does not reach the vicinity of the upper end of the tank 2.
Further, even when a foam that has not yet been separated from the liquid and air reaches the second separation chamber 7 or the third separation chamber 8, the foam collides with each inclination regulating plate 51b. The air and the liquid are separated, and the liquid flows down along the inclination of each inclination regulating plate 51b, and the clean air passes through each air passage port 52 of each inclination regulating plate 51b etc. Will be released to the outside.

As described above, according to the chip filtration device 1 according to the embodiment of the present invention, in the first filtration chamber 3 and the second filtration chamber 4, the chip-mixed air and the liquid are sufficiently brought into contact with each other. The chips can be sufficiently dissolved in the liquid and filtered, and further, a foam containing clean air is guided to the first separation chamber 6 and the collision plate 50 separates the air and the liquid. This allows clean air to pass through the second separation chamber 7 and the third separation chamber 8 and be discharged to the outside from the air discharge pipe 13.
Thus, in the chip filtration apparatus 1 which concerns on embodiment of this invention, since the 1st and 2nd filtration chambers 3 and 4 were provided in the tank 2 along the longitudinal direction, this chip filtration apparatus 1 Without increasing the size, it is possible to sufficiently secure the contact time between the chip-mixed air and the liquid and improve the filtration capacity.

  Moreover, according to the chip filtration device 1 according to the embodiment of the present invention, the first separation chamber is provided by the partition plates 20 and 21 arranged at intervals along the longitudinal direction of the tank 2. 6, divided into three chambers, a second separation chamber 7 and a third separation chamber 8, and in each of the second separation chamber 7 and the third separation chamber 8, an inclination restriction plate 51b and a horizontal restriction plate 51a are arranged. Therefore, when the chip-mixed air is pumped into the liquid 34 in the first filtration chamber 3 at a predetermined air pressure, the liquid level h jumps greatly in the second separation chamber 7 and the third separation chamber 8. As a result, downsizing of the present chip filtration device 1 can be achieved.

In the chip filtration device 1 according to the embodiment of the present invention, the separation chamber 5 is divided into three of the first separation chamber 6, the second separation chamber 7 and the third separation chamber 8 along the longitudinal direction of the tank 2. Although the liquid chamber h is divided into chambers to prevent the liquid level h from jumping up in the separation chamber 5, the separation chamber 5 may be divided into a plurality of three or more chambers in order to obtain further effects.
In the present embodiment, the separation chamber 5 is partitioned into a plurality of chambers for the purpose of reducing the size of the chip filtration device 1, but the capacity of the separation chamber 5 needs to be concerned about the splash of the liquid level h. If it can be formed as large as possible, it is not always necessary to divide the separation chamber 5 into a plurality of chambers, and it is not necessary to provide the restriction plates 51 of the respective inclination restriction plates 51b and the horizontal restriction plates 51a.
Moreover, in the chip filtration apparatus 1 which concerns on embodiment of this invention, the collision board 50 is arrange | positioned in the position facing the downstream end part of the 2nd communicating pipe 12 for the purpose of urging | separating a liquid and air. However, the collision plate 50 is not necessarily provided.

  Moreover, in the chip filtration method according to the embodiment of the present invention, the chips are not filtered by the filter, so that problems such as filter clogging do not occur.

FIG. 1 is a side view of a chip filtration apparatus according to an embodiment of the present invention. FIG. 2 is a plan view of the chip filtration apparatus according to the embodiment of the present invention. FIG. 3 is a front view of the chip filtration apparatus according to the embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Chip filtration apparatus, 2 Tank, 3 1st filtration chamber, 4 2nd filtration chamber, 5 Separation chamber, 6 1st separation chamber, 7 2nd separation chamber, 8 3rd separation chamber, 10 Blowing pipe, 11 1st Communication pipe, 12 2nd communication pipe, 13 Air discharge pipe, 18-21 Partition plate, 31 Small hole, 33, 36, 37, 38, 39 Air layer, 34, 35 In liquid, 51 Restriction plate, 51a Horizontal restriction plate , 51b Inclination regulating plate, 26, 27, 52 Air passage opening

Claims (6)

A chip filtration device for filtering chip-mixed air including chips generated during processing,
The chip filtration apparatus is partitioned into a filtration chamber and a separation chamber by a plurality of partition plates extending in the vertical direction, and a liquid for filtering the chips is filled at a predetermined height and the liquid flow between the chambers And a tank that is configured to be capable of being maintained in a sealed state;
A blow-out pipe for pumping chip-mixed air into the liquid in the first filtration chamber in the tank;
A first communication pipe communicating the air layer of the first filtration chamber and the liquid of the second filtration chamber;
A second communication pipe communicating the air layer of the second filtration chamber and the air layer of the separation chamber;
An air discharge pipe communicating the air layer of the separation chamber and the outside of the tank;
A chip filtration apparatus, wherein a plurality of small holes are formed at ends of the blowout pipe and the first communication pipe that are immersed in the liquid.   The collision plate for colliding the foam group that has flowed out of the second communication pipe is disposed at a position facing the end of the second communication pipe in the air layer of the separation chamber. The chip filtration apparatus described in 1.   The separation chamber is partitioned into a plurality of separation chambers by a plurality of partition plates extending in the vertical direction so that the air layers of the chambers communicate with each other and liquid flow between the chambers is possible. The chip filtration apparatus of Claim 1 or 2 characterized by the above-mentioned.   Of the plurality of separation chambers provided by partitioning the separation chamber, the air layer of each separation chamber other than the separation chamber communicated with the second communication pipe extends in a direction facing the liquid surface, and the liquid surface jumps up. 4. The chip filtration apparatus according to claim 3, wherein a plurality of restriction plates are arranged at intervals upward from a position close to the liquid level so as not to restrict the flow of air.   Each of the restriction plates is disposed closest to the liquid surface and extends in a substantially horizontal direction, and a plurality of the restriction plates are disposed above the horizontal restriction plate and inclined toward the liquid surface. The chip filtration apparatus according to claim 4, wherein an air passage opening is formed in each of the inclination regulating plates. A chip filtration method in which chip-mixed air containing chips generated during processing is separated into a filtration chamber and a separation chamber, and is filtered through a tank filled with liquid,
Chip-mixed air is pumped into the liquid in the filtration chamber, and the liquid in the filtration chamber is agitated to generate bubbles,
Then, the foam group is guided from the filtration chamber to the separation chamber, and the foam group is separated into liquid and clean air in the separation chamber,
Then, the chip filtration method, wherein the clean air is discharged to the outside of the separation chamber.

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