JP2007007790A - Filter in chip conveyer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a filter in a chip conveyer, returning chips entering a sealing chamber to the waste liquid storing tank side to improve the filter performance and improving the sealing ability and durability of a sealing mechanism. <P>SOLUTION: The sealing mechanism 51 is formed on the outer peripheral edge of a filtering disc plate 42 provided corresponding to an opening part of a holder 34. A casing 35 of the sealing mechanism 51 is provided with a swelling part 82 having a swelling chamber 82a for collecting chips entering the sealing chamber 54 of the sealing mechanism 51. The filtering disc plate 42 is rotated to take the chips moved from the lower part of the sealing chamber 54 upward along a seal lip 53a filter in chip conveyer in the swelling chamber 82a. The swelling chamber 82a is provided with an entering chip reducing means 81 for returning the chips taken in the swelling chamber 82a to the waste liquid storing tank side of the chip conveyer body by a filtrate jetted from the filtrate storing tank via a pump and a pipeline through a jet orifice 74b of a nozzle plate 74 into the swelling chamber 82a. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a filtration device for filtering waste liquid of coolant (cutting fluid) containing chips in a chip conveyor for conveying chips such as cutting waste discharged from a machine tool.

Conventionally, there is one disclosed in Patent Document 1 as this type of filtration device. This filtration device is configured so that the installation space can be reduced, and the chip attached to the filtration membrane can be easily removed to reduce maintenance and inspection work. This filtration device is a conveyor main body that conveys chips discharged together with coolant waste liquid from a machine tool from a receiving position to a discharge position, and a flat filtration that filters waste liquid discharged outside from a waste liquid storage tank of the conveyor main body. Disk plate, a rotation drive mechanism for continuously or intermittently switching the filtration disk plate between the filtration chamber and the attached chip separation chamber, and the filtration switched to the attached chip separation chamber And an attached chip separating / reducing means for separating the chips adhering to the disk plate and reducing them to the waste liquid storage tank. Further, the filtration device includes a filtrate in which the waste liquid from the waste liquid storage tank bypasses the outer periphery of the filtration disk plate downward and stores the coolant filtrate with respect to the outer periphery of the filtration disk plate. A seal mechanism is provided that includes two seal rings that prevent it from being discharged into the storage tank. (Refer to the description of the sealing mechanism 51 in FIG. 1 of Patent Document 1 and paragraph number 0026 in the specification.)
JP 2001-252848 A

  However, when the tip enters the seal chamber of the seal mechanism, the conventional filtration device has the following problems because the tip discharge passage is not provided. That is, chips gradually accumulate in the seal chamber, and the accumulated chips enter the seal interface between the seal lip of the seal ring and one side surface of the filter disk plate with which the seal lip contacts, thereby improving the sealing performance. There has been a problem that the filter performance is deteriorated, the seal ring is damaged, or the tip enters the filtrate storage tank through the seal interface to deteriorate the filtration performance.

  An object of the present invention is to solve the above-mentioned problems in the prior art, and to improve the filtration performance by reducing the chip that has entered the seal chamber to the waste liquid storage tank side, and also the sealing performance of the seal mechanism. And it is providing the filtration apparatus in the chip conveyor which can improve durability.

  In order to solve the above-mentioned problems, the invention according to claim 1 includes a conveyor main body that conveys chips discharged together with coolant waste from a machine tool from a receiving position to a discharge position, and a waste liquid storage tank of the conveyor main body. A flat rotary filter for filtering waste liquid discharged to the outside, and a rotary drive mechanism for rotating the rotary filter continuously or intermittently between the filtration chamber and the attached chip separation chamber. In the chip conveyor provided with the attached chip separation / reduction means for separating the chips adhering to the rotary filter switched to the attached chip separation chamber and returning them to the waste liquid storage tank, the rotary filter The waste liquid is prevented from being reduced from the waste liquid storage tank to the filtrate storage tank that bypasses the outer peripheral edge of the rotary filter body and stores the coolant filtrate. A seal chamber including a mechanism is provided, and gist in that a penetration tip reduction means for reducing the conveyor body in entering the chip reduction chamber which is spaced upwardly a chip that has entered into the seal chamber from the filter chamber.

  According to a second aspect of the present invention, in the first aspect, the seal member of the seal mechanism includes a seal lip that contacts a side surface on the filtrate storage tank side of both side surfaces of the periphery of the rotary filter body. The gist is that it is a ring.

  According to a third aspect of the present invention, in the first or second aspect, the entry tip reduction means includes a bulging chamber formed so as to bulge outward in a part of the seal chamber in the entry tip reduction chamber. The gist of the present invention is that it is constituted by a filtrate supply mechanism for supplying coolant filtrate to the bulging chamber or an air supply mechanism for supplying air.

  According to a fourth aspect of the present invention, in the third aspect, the filtrate supply mechanism or the air supply mechanism is arranged in parallel with the attached chip separating / reducing means and is operated by the same power source. It is a summary.

  According to the invention described in any one of claims 1 to 4, the chip that has entered the seal chamber from the waste liquid storage tank is guided to the seal chamber on the side of the ingress chip reduction chamber by the rotation of the rotary filter, It can be reduced to the conveyor body by the reduction means. For this reason, while being able to improve filtration performance, the damage of the sealing member by a chip | tip can be suppressed, and the sealing performance and durability of a sealing mechanism can be improved.

In the invention according to claim 2, since the seal member of the seal mechanism is a seal ring having a seal lip, the cost of the seal member can be reduced.
In the invention described in claim 3, since the bulging chamber is formed so as to bulge outward in a part of the seal chamber, the chip can be smoothly taken into the bulging chamber, and the bulging chamber The chip can be easily returned to the conveyor body side.

  According to a fourth aspect of the present invention, the filtrate supply mechanism or the air supply mechanism is arranged in parallel with the attached chip separating / reducing means and is operated by the same power source. For this reason, the number of parts can be reduced, manufacturing and assembling operations can be easily performed, and the cost can be reduced.

Hereinafter, an embodiment in which the present invention is embodied in a filtering device for a chip conveyor used in a machine tool will be described with reference to FIGS.
First, the outline of the chip conveyor will be described with reference to FIGS. 8 and 9. In the vicinity of the machine tool 11, a filtrate storage tank 12 for storing a coolant filtrate that has been filtered by a coolant wastewater filtration device described later. Is provided. A pump 13 and a pipe 14 as a power source are provided between the filtrate storage tank 12 and the machine tool 11 so as to supply coolant filtrate to the cutting mechanism portion K of the machine tool 11. The machine tool 11 is provided with a pipe 15 and a flange 16 so that the chips discarded from the cutting mechanism K are supplied to the chip conveyor 17 together with the coolant waste liquid. The chip conveyor 17 is provided with two filtering devices 18 for filtering the coolant waste liquid and discharging it to the filtrate storage tank 12.

Therefore, the configurations of the chip conveyor 17 and the filtration device 18 will be described in order.
The trough 21 constituting the chip conveyor 17 extends horizontally at the lower part thereof, a receiving part 22 extending upward from the downstream end of the receiving part 22 so as to incline upward, and extends downward from the upper end of the rising part 23. The discharge part 24 is comprised. Sprockets 25 and 26 are rotatably supported in the receiving part 22 and the discharge part 24 of the trough 21, and an endless carrier 27 is hung between the sprockets 25 and 26. As shown in FIG. 1, the transport body 27 is guided and moved along an upper guide rail 28 and a lower guide rail 29 that are mounted inside the left and right side walls of the trough 21. The transport body 27 is configured by connecting a large number of flappers 30 so as to be bent by a connecting shaft 31. A guide roller 32 fitted to both ends of each connecting shaft 31 is brought into rolling contact with the upper guide rail 28 and the lower guide rail 29. Further, the conveyance body 27 is rotated in the counterclockwise direction shown in FIG. 8 along the receiving portion 22, the raising portion 23, and the discharging portion 24 by driving a motor (not shown).

  The flange 16 is arranged in correspondence with the base end portion of the receiving portion 22, that is, the chip receiving position α. The receiving portion 22 includes a waste liquid storage tank 22a for storing the coolant waste liquid supplied together with the chips from the basket 16.

  The flapper 30 is provided with a transport scraper 30a so that the chips deposited on the upper surface of the transport body 27 are transported from the chip receiving position α to the chip collecting position β on the downstream end side of the receiving section 22. . This chip collection position β has a function as a floating chip collection position.

  Next, the pair of filtration devices 18 attached to one side wall portion of the receiving portion 22 will be described. Since both the filtration devices 18 have the same configuration, the filtration device 18 on the right side in FIG. 8 will be described.

  As shown in FIG. 1, a coolant discharge port 33 for coolant is formed on the right side wall of the receiving portion 22 (waste liquid storage tank 22a) so as to be close to the chip receiving position α. And the space formed between the upper part supported by the upper guide rail 28 of the said conveyance body 27, ie, the going part 27a of the conveyance body 27, and the return part 27b of the conveyance body 27 located in the lower side. The waste liquid of the coolant in R is discharged to the filtrate storage tank 12 side through the waste liquid discharge port 33.

  As shown in FIG. 1, a disk-shaped holder 34 is fixed to the outer surface of the right side wall of the receiving portion 22 by welding or the like so as to correspond to the waste liquid discharge port 33. The holder 34 has an opening 34 a (see FIGS. 2 and 7) corresponding to the waste liquid discharge port 33. An outer flange 35 a formed at the left end edge of the casing 35 having a horizontal cylindrical shape is attached to the right side surface near the outer periphery of the holder 34 by a bolt 36. An attachment plate 37 is fixed to the right edge opening edge of the casing 35 by welding. A rotation shaft 38 is penetrated and supported in the middle portion of the mounting plate 37 so as to be positioned at the center of the casing 35. As shown in FIG. 4, the rotary shaft 38 is supported by a pair of attachment cylinders 39 attached to the attachment plate 37 by bolts 41 and a pair of radial bearings 40 accommodated in the attachment cylinders 39.

  A filter disc plate 42 as a rotary filter is attached to the tip of the rotary shaft 38. As shown in FIG. 7, the filtration disk plate 42 is configured by combining three members 43, 46 and 47. The mounting frame 43, which is the first member, includes an inner ring portion 43a, an outer ring portion 43b, and a plurality of spoke portions 43c that are radially connected between the inner and outer ring portions 43a and 43b. Is done. As shown in FIG. 4, a boss portion 44 welded and fixed to the center portion of the inner ring portion 43 a is key-fitted to the rotary shaft 38 and fixed by a bolt 45.

  The filtration membrane 46, which is the second member constituting the filtration disk plate 42, is constituted by a stainless steel sieve (100 mesh: the opening of the sieve mesh is 0.149 mm). A sandwiching frame 47, which is a third member constituting the filtration disk plate 42, is press-molded in substantially the same outer shape as the mounting frame 43. The sandwiching frame 47 includes an inner ring portion 47a, an outer ring portion 47b, a plurality of radial spoke portions 47c, and reinforcing ribs 47d attached to the spoke portions 47c. The mounting frame 43 and the sandwiching frame 47 are fastened and fixed by a plurality of bolts with the filtration membrane 46 sandwiched therebetween.

Next, the seal mechanism 51 provided on the holder 34, the casing 35, and the mounting plate 37 so as to correspond to the outer peripheral portion of the filtration disk plate 42 will be described.
As shown in FIG. 4, an annular attachment ring 52 is fixed to the left side surface of the attachment plate 37 by welding at a position spaced inward from the inner peripheral surface of the casing 35. A seal ring 53 is mounted on the outer periphery of the mounting ring 52, and a seal lip 53 a is in contact with the right side surface of the outer ring portion 43 b of the mounting frame 43 of the filtration disk plate 42. The right side surface of the seal ring 53 is regulated by the left side surface of the mounting plate 37. A sealing chamber 54 is formed by the casing 35, the mounting plate 37, the filtration disk plate 42, the mounting ring 52 and the seal ring 53. The seal chamber 54 is formed between the holder 34 and the filtration disk plate 42 by a ring-shaped gap 55 formed between the inner circumferential surface of the casing 35 and the outer circumferential edge of the filtration disk plate 42. The formed coolant waste liquid is communicated with the filtration chamber P1. The filtration chamber P <b> 1 communicates with the space R through the opening 34 a of the holder 34.

  The sealing mechanism 51 allows the coolant waste fluid flowing from the discharge port 33 to the filtration chamber P1 to pass through the filtration membrane 46 without bypassing the outer periphery of the filtration disk plate 42 downward.

Next, the rotational drive mechanism 61 that rotationally drives the filtration disk plate 42 will be described.
As shown in FIG. 1, a motor 62 is fixed laterally to the left side surface of the mounting plate 37, and a drive sprocket wheel 64 is attached to an output shaft 63 of the motor 62. A driven sprocket wheel 65 is fitted and fixed to the left end portion of the rotating shaft 38, and a chain 66 is hooked between the driven sprocket wheel 64 and the driven sprocket wheel 64. Accordingly, when the motor 62 is operated, the filtration disk plate 42 is rotated continuously or intermittently via the drive sprocket wheel 64, the chain 66, the driven sprocket wheel 65, and the rotating shaft 38. This rotational direction is counterclockwise in FIG. Therefore, the position of the filtration membrane 46 of the filtration disk plate 42 is switched between the filtration chamber P1 corresponding to the discharge port 33 and the attached chip separation chamber P2 above the filtration chamber P1.

  Next, separation / reduction of chips for separating the chips attached to the filtration membrane 46 rotated and moved from the filtration chamber P1 to the attached tip separation chamber P2 from the filtration membrane 46 and discharging them to the receiving portion 22 side. The mechanism (means) 71 will be described.

  As shown in FIGS. 3 and 5, the mounting plate 37 has an opening 37b corresponding to the attached chip separation chamber P2, and a liquid supply case 72 is fixed to the opening 37b by welding or the like. A liquid supply cylinder 73 is fixed to the back surface of the liquid supply case 72 by welding or the like. The liquid supply cylinder 73 is connected to a branch pipe 14 a branched from the pipe 14. A nozzle plate 74 having a plurality of injection holes 74a is accommodated in the liquid supply case 72 in an inclined state, and coolant filtrate is injected from the injection holes 74a toward the filtration membrane 46. .

  An opening 34b is formed in the holder 34 so as to correspond to the attached tip separation chamber P2, and the tip attached to the filtration membrane 46 is separated and returned to the front (left side in FIGS. 1 and 5). It is like that. A chip guide cylinder 75 is provided on the left side surface of the holder 34 so as to correspond to the opening 34b, and the separated chips are guided and returned to the receiving section 22 side of the chip conveyor 17.

  Next, a description will be given of the incoming chip return means 81 for returning the chips that have entered the seal chamber 54 to the chip conveyor 17 side in the incoming chip return chamber P3 in the vicinity of the attached chip separation chamber P2.

  As shown in FIGS. 6 and 7, the volume of the seal chamber 54 is expanded and part of the outer periphery of the casing 35 so as to be positioned at the same height as the liquid supply case 72. A bulging portion 82 for forming 82a is formed. A bulging plate portion 34c is formed in the holder 34 so as to correspond to the bulging portion 82 and the bulging chamber 82a, and an opening 34d is formed in the bulging plate portion 34c. Similarly, a bulging plate portion 35b is formed on the outer flange 35a, and an opening portion 35c communicating with the opening portion 34d is formed on the bulging plate portion 35b. Further, a bulging plate portion 37c is formed on the mounting plate 37 so as to correspond to the bulging plate portion 35b, and an opening 37d is formed in the bulging plate portion 37c. As shown in FIG. 6, the liquid supply case 72 and the nozzle plate 74 are provided so as to extend to a position corresponding to the opening 37d, and the opening 37d is formed from an injection hole 74b formed in the nozzle plate 74. The filtrate is injected and supplied into the bulging chamber 82a. In this embodiment, the filtrate storage tank 12, the pump 13, the pipe 14, the branch pipe 14a, the injection hole 74b of the nozzle plate 74, the opening 37d, the bulging part 82, the bulging chamber 82a, the opening 35c and the opening. 34d or the like constitutes the incoming chip return means 81.

Next, the operation | movement is demonstrated about the chip conveyor 17 and the filtration apparatus 18 which were comprised as mentioned above.
8 and 9, the chips discarded from the machine tool 11 are supplied to the chip receiving position α of the receiving portion 22 of the chip conveyor 17 by the scissors 16 together with the coolant waste liquid. Chips sinking downward from the coolant waste at the chip receiving position α are deposited on the forward portion 27a of the transport body 27 and are transported to the chip collection position β side by the transport body 27 circulating around. Further, the chips floating in the coolant waste liquid are raised along the rising portion 23 by the transport scraper 30a at the tip recovery position β and discharged from the discharge portion 24.

  In the receiving unit 22 shown in FIG. 1, a part of fine chips that are not discharged by the going part 27a are in a space R formed by the going part 27a and the returning part 27b of the transport body 27. It enters from the gap of the flapper 30 and is supplied to the filtration disk plate 42 of the filtration device 18 through the waste liquid outlet 33. The coolant waste liquid that has passed through the waste liquid discharge port 33 flows into the filtrate storage tank 12 through the filter membrane 46 of the rotating disk plate 42 for filtration. At this time, since a fine chip is captured by the filtration membrane 46, the filtered coolant filtrate is stored in the filtrate storage tank 12. Since the filtration disk plate 42 is rotated continuously or intermittently at a predetermined speed by the motor 62, the chips captured in the filtration chamber P1 are moved to the attached chip separation chamber P2. Then, the coolant filtrate pumped up by the pump 13 is supplied from the branch pipe 14 a into the liquid supply case 72, and is injected from the injection holes 74 a of the nozzle plate 74 toward the filtration membrane 46. For this reason, the chips adhering to the filter membrane 46 are separated and passed through the chip guide cylinder 75 and returned to the chip receiving position α of the receiving unit 22.

  On the other hand, if the above-described operation is continued, the waste liquid of the coolant that has entered the filtration chamber P1 from the discharge port 33 and the opening 34a includes chips, and enters the seal chamber 54 on the filtration chamber P1 side through the gap 55. Enter. When the amount of chips that have entered the seal chamber 54 gradually increases, chips are placed in the seal chamber 54 up to the level of the waste liquid in the filtration chamber P1 (the intermediate position in the vertical direction of the opening 34a in FIG. 1). Is deposited. The tip is moved upward and moved into the bulging chamber 82 a of the bulging portion 82 due to friction caused by the rotational movement of the outer peripheral edge of the filtration disk plate 42 and the adhesion force due to the waste liquid of the coolant. become. The chips taken into the bulging chamber 82a are moved to the outside of the bulging chamber 82a by the coolant filtrate injected from the nozzle holes 74b of the nozzle plate 74 shown in FIG. The chip 34 is returned from the opening 34d of the holder 34 to the chip receiving position α of the receiving unit 22 through the chip guide tube 75.

Next, the effects of the filtration device 18 configured as described above will be listed together with the configuration.
(1) In the above-described embodiment, the bulging portion 82 that forms the bulging chamber 82 a is formed in a part of the seal chamber 54 with respect to the casing 35, and the filtrate is injected into the bulging portion 82 from the injection hole 74 b of the nozzle plate 74. Was injected into the bulging chamber 82a. For this reason, the chip taken into the bulging chamber 82a can be discharged from the openings 35c and 34d to the chip conveyor 17 side. Therefore, before the chip that has entered the seal chamber 54 fills the entire area of the seal chamber 54, the tip can be returned to the waste liquid storage tank 22 a side, the filtration performance can be improved, and the seal of the seal ring 53 of the seal mechanism 51 can be improved. And durability can be improved.

  (2) In the above embodiment, since the liquid supply case 72, the liquid supply cylinder 73, and the branch pipe 14a are shared, the configuration of the entry tip reducing means 81 is simplified, the number of parts is reduced, and the manufacture is easy. The cost can be reduced.

  (3) In the above embodiment, since the seal ring 53 having the seal lip 53a is used as the seal member, when the filtrate is supplied into the bulging chamber 82a as shown in FIG. Since it is pressed against the side surface of the ring portion 43b, the sealing performance can be improved.

Next, another embodiment of the present invention will be described.
As shown in FIG. 10, the bulging portion 82 is omitted, and the clearance 55 between the outer peripheral edge of the filtration disk plate 42 and the inner peripheral surface of the casing 35 is increased, and The filtrate may be jetted from the jet nozzle 84 into the seal chamber 54. In this case, since it is not necessary to form the bulging part 82, manufacture can be performed easily and cost can be reduced. In this other example, air may be supplied to the injection nozzle 84 from an air pipe of an air supply mechanism, although not shown, instead of the filtrate.

  As shown in FIG. 11, an opening 37e for supplying the filtrate to the seal chamber 54 of the seal mechanism 51 on the filtration chamber P1 side is formed in the mounting plate 37, and the filtrate is supplied from the injection nozzle 85 into the seal chamber 54. May be supplied. In this alternative example, the gap 55 may be reduced so that the filtrate gradually leaks from the seal chamber 54 to the filtration chamber P1. In this alternative example, since the filtrate moves or gradually leaks from the seal chamber 54 through the gap 55 to the filtration chamber P1, it is possible to suppress waste liquid from entering the seal chamber 54 from the filtration chamber P1, The filtration performance can be improved, and the sealing performance and durability of the sealing mechanism 51 can be further improved.

Although not shown, air may be blown onto the filter membrane 46 from the air piping of the air supply mechanism as the attached chip separating / reducing means.
A screw conveyor, a belt conveyor, a bucket conveyor, or other conveying means may be used as the conveying body 27 constituting the conveyor body.

Although not shown, the location of the filtration disk plate 42 may be a discharge passage connected to the discharge port 33 in addition to the discharge port 33.
The filtration membrane 46 may be set in a range of 16 to 200 mesh, for example.

The technical ideas other than the claims grasped from the embodiment will be described below.
(1) The structure according to any one of claims 1 to 4, wherein an opening for supplying filtrate to the seal chamber of the seal mechanism on the filtration chamber side is formed, and the filtrate is supplied from the injection nozzle into the seal chamber. Filtration device in a chip conveyor.

The longitudinal cross-sectional view of the chip conveyor and filtration apparatus which actualized this invention. The front view of a filtration apparatus. The rear view of a filtration apparatus. The partial expansion longitudinal cross-sectional view of a filtration apparatus. FIG. 3 is an enlarged vertical sectional view of a separation / reduction mechanism of a filtration device. The expansion plane sectional view of the separation / reduction mechanism of the filtration device and the approach tip reduction means. The exploded perspective view of the related parts of a filtration device. The front sectional view of a chip conveyor and a filtration device. FIG. 3 is a schematic plan view of a chip conveyor and a filtration device. The fragmentary flat sectional view of the filtration apparatus which shows another embodiment of this invention. The fragmentary longitudinal cross-sectional view of the filtration apparatus which shows another embodiment of this invention.

Explanation of symbols

  P1 ... Filtration chamber, P2 ... Adhering chip separation chamber, P3 ... Incoming chip reduction chamber, 11 ... Machine tool, 12 ... Filtrate storage tank, 17 ... Chip conveyor, 22a ... Waste liquid storage tank, 51 ... Seal mechanism, 53 ... Seal Ring, 53a ... seal lip, 54 ... seal chamber, 61 ... rotational drive mechanism, 81 ... entry tip returning means, 82a ... bulge chamber.

Claims (4)

A conveyor body for conveying chips discharged from the machine tool together with coolant waste from the receiving position to the discharging position;
A flat rotary filter for filtering waste liquid discharged to the outside from the waste liquid storage tank of the conveyor body;
A rotary drive mechanism for rotating and switching the rotary filter body between the filtration chamber and the attached chip separation chamber continuously or intermittently;
In a chip conveyor provided with attached chip separation / reduction means for separating chips attached to the rotary filter body switched to the attached chip separation chamber and returning them to the waste liquid storage tank,
A sealing mechanism that prevents the waste liquid from being discharged from the waste liquid storage tank to the filtrate storage tank that stores the coolant filtrate bypassing the outer peripheral edge of the rotary filter body with respect to the outer peripheral edge of the rotary filter body. A chip conveyor filtration device, characterized in that an entry chip reduction means is provided for reducing the chip that has entered the seal chamber of the seal mechanism to the conveyor body side in an entry chip reduction chamber spaced upward from the filtration chamber. . 2. The filtration device in a chip conveyor according to claim 1, wherein the seal member of the seal mechanism is a seal ring provided with a seal lip that contacts a side surface on the filtrate storage tank side among both side surfaces of the periphery of the rotary filter body. 3. The entry tip reducing means according to claim 1, wherein the entry tip reduction means includes a bulge chamber formed so as to bulge outward from a part of the seal chamber in the entry tip reduction chamber, and filtering of coolant in the bulge chamber. A filtration device in a chip conveyor configured by a filtrate supply mechanism for supplying liquid or an air supply mechanism for supplying air. 4. The filtration device in a chip conveyor according to claim 3, wherein the filtrate supply mechanism or the air supply mechanism is arranged in parallel with the attached chip separation / reduction means and is operated by the same power source.

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