JP2011177809A - Coolant purifying device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a coolant purifying device for improving maintainability. <P>SOLUTION: The coolant purifying device includes: a magnetic separation device 20, an eddy current tank 40; a clean tank 50; a first precipitation tank 10 disposed between a main process machine 2 and the magnetic separation device 20 to precipitate contaminant; and a second precipitation tank 30 disposed between the magnetic separation device 20 and the eddy current tank 40 to precipitate the contaminant. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a coolant purification device that removes contaminants mixed in coolant used in a machine tool such as a grinding machine.

  There is already known a coolant purifying apparatus that removes contaminants such as chips (hereinafter referred to as sludge) and abrasive grains mixed in coolant used in machine tools (hereinafter referred to as processing base machines) and purifies the coolant. Yes.

  As such a coolant purifying apparatus, there exists a thing shown in patent document 1, for example. In the coolant purifying apparatus shown in Patent Document 1, the coolant flowing in from the processing mother machine is passed in the order of the magnetic separation device, the vortex tank, and the clean tank, and the contaminants mixed in the coolant are separated and removed. The magnetic separation device has a cylindrical magnet disposed in the flow path through which the coolant passes, and the vortex tank generates vortex in the tank, and sludge, abrasive grains, etc. that could not be removed by the magnetic separation device The clean tank is a tank into which the coolant from which contaminants are removed flows in the vortex tank. The coolant in the clean tank is sent back to the processing mother machine by a pump.

  Therefore, most of the sludge mixed in the coolant is removed by the cylindrical magnet when passing through the magnetic separator, and flows out to the vortex tank. In the vortex tank, fine sludge (etc.) that floats with bubbles mixed in the liquid floats near the liquid surface, while fine sludge, abrasive grains, etc. that could not be removed by the magnetic separator are collected near the bottom of the center. The A partition plate is provided between the vortex tank and the clean tank to prevent fine sludge (and the like) floating on the coolant level from flowing into the clean tank. The coolant from which the sludge and the like are removed flows into the clean tank, and this coolant is again sent out to the processing mother machine.

  Furthermore, the coolant purifying apparatus shown in Patent Document 1 is provided with an abrasive sedimentation tank, which sucks coolant together with sludge, abrasive grains, etc. accumulated near the bottom of the central portion of the vortex layer, and abrasives in the sucked coolant. The grains are settling in an abrasive settling tank. The coolant in which the abrasive grains are settled is sent again to the magnetic separation device, and the coolant is circulated to further purify the coolant.

JP 2002-036111 A

  In the above-described coolant purifying apparatus, although the coolant is circulated, since the abrasive grain settling tank is provided on the downstream side of the vortex tank, fine sludge, abrasive grains, etc. in the vortex tank are transferred to the vortex tank. There was a risk of flowing into the adjacent clean tank.

  In addition, when performing maintenance of the vortex tank, fine sludge, abrasive grains, etc. accumulated near the bottom of the central part of the vortex layer are targeted. There is also a problem that the frequency of maintenance of the vortex tank increases because only the contaminants can be removed.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a coolant purification device that improves maintainability and purification efficiency.

A coolant purifying apparatus according to the first invention for solving the above-mentioned problems is as follows.
Magnetic separation means for removing magnetic material from contaminants mixed in the coolant used in the processing mother machine;
A vortex tank that passes through the magnetic separation means and has a vortex forming means for forming a vortex in the stored coolant in the central part, and accumulates the contaminants in the central part;
In order to send the purified coolant to the processing mother machine again, in the coolant purification device having a clean tank for storing the coolant on the outer peripheral side of the vortex of the vortex tank,
Between the processing base machine and the magnetic separation means, a collar part that receives and circulates coolant that has flowed out of the processing mother machine, and a bottom part that is lower than the bottom part of the collar part, and flows from the collar part A first sedimentation tank having a sedimentation section for sedimenting the contaminants in the coolant is provided, and the coolant is caused to flow into the magnetic separation means through the first sedimentation tank.

A coolant purifying apparatus according to a second invention for solving the above-mentioned problems is as follows.
In the coolant purification apparatus according to the first invention,
Among the side walls which are lateral to the coolant flowing direction in the settling portion, at least a part or all of one side wall is inclined from the lower side to the upper side and from the center side to the outer side.

A coolant purifying apparatus according to a third aspect of the present invention for solving the above problem is as follows.
In the coolant purifying apparatus according to the first or second invention,
A second settling tank for precipitating the contaminants is provided between the magnetic separation means and the vortex tank, and a coolant is introduced into the vortex tank through the second settling tank. To do.

A coolant purifying apparatus according to a fourth invention for solving the above-mentioned problems is as follows.
In the coolant purifying apparatus according to the third invention,
A part or all of the side wall of the second sedimentation tank is inclined.

A coolant purifying apparatus according to a fifth invention for solving the above-described problems is
In the coolant purifying apparatus according to the third or fourth invention,
The second settling tank and the vortex tank are provided adjacent to each other through a side wall, and a communication hole is provided on the side wall to communicate between the second settling tank and the vortex flow tank. The upper end is set to a position lower than the lower limit of the coolant level in the second settling tank, and the lower end of the communication hole is set to a position where the contaminants precipitated in the second settling tank do not flow out to the vortex tank. It is characterized by.

  According to the first invention, the first precipitation tank for precipitating contaminants is provided on the upstream side of the magnetic separation means, and the abrasive grains have a great influence on the performance and life of the consumable parts (for example, rubber rollers) of the magnetic separation means. As a result of precipitation, the performance of the magnetic separation means can be prevented from being lowered, its life can be improved, and maintainability is improved.

  According to the second invention, since the side wall of the first sedimentation tank is inclined, it is easy to scrape the precipitated contaminants.

  According to the third aspect of the invention, the second settling tank for precipitating the contaminants is provided on the upstream side of the swirl tank, and the contaminants that could not be removed by the magnetic separation means are precipitated. The amount of contaminants to be reduced can be reduced, the frequency of cleaning can be reduced, and the maintainability can be improved.

  According to the fourth aspect, since the side wall of the second sedimentation tank is inclined, it is easy to scrape the precipitated contaminants.

  According to the fifth invention, the second settling tank and the vortex tank are provided adjacent to each other, and the second settling tank and the vortex tank are communicated with each other at a substantially central height position of the side wall therebetween. Because the communication hole is provided, the floating contaminant in the coolant of the second sedimentation tank and the contaminant that settles cannot flow into the vortex tank through the communication hole, so the amount of contaminant flowing into the vortex tank is reduced. The maintenance frequency can be improved by reducing the cleaning frequency.

It is a systematic diagram explaining the coolant purification apparatus which becomes an example of embodiment of this invention. It is a figure which shows the structure of the coolant purification apparatus shown in FIG. 1, (a) is a top view, (b) is a side view. It is a figure which shows the 1st sedimentation tank of the coolant purification apparatus shown in FIG. 1, FIG. 2, (a) is a side view, (b) is sectional drawing. It is sectional drawing which shows the 2nd sedimentation tank of the coolant purification apparatus shown in FIG. 1, FIG.

  Hereinafter, with reference to FIGS. 1-4, the example of embodiment of the coolant purification apparatus which concerns on this invention is demonstrated.

Example 1
FIG. 1 is a system diagram for explaining the coolant purification apparatus of the present embodiment, FIG. 2 (a) is a top view showing the configuration of the coolant purification apparatus of the present embodiment, and FIG. It is a side view. 3A is a side view showing the first settling tank of the coolant purifying apparatus shown in FIGS. 1 and 2, and FIG. 3B is a BB line in FIG. 3A. It is arrow sectional drawing. FIG. 4 shows a second settling tank of the coolant purifying apparatus shown in FIGS. 1 and 2, and is a cross-sectional view taken along the line AA in FIG. 2 (a). In addition, the arrow in a figure has shown the moving direction of coolant. Further, “P” and “M” in the figure represent pumps and motors, respectively.

  The coolant purifying apparatus 1 according to the present embodiment purifies the coolant by removing contaminants such as sludge and abrasive grains mixed in the coolant used for the machining of the processing base machine 2 such as a machine tool. .

  The coolant purifying apparatus 1 mainly includes a magnetic separation device 20 (magnetic separation means), a rectangular vortex tank 40, and a clean tank 50.

  In the present embodiment, a first sedimentation tank 10 is provided between the processing mother machine 2 and the magnetic separation device 20, and the coolant that has flowed out of the processing mother machine 2 passes through the first sedimentation tank 10, It flows into the magnetic separation device 20 through the pipe 15.

  As shown in FIGS. 3 (a) and 3 (b), the first sedimentation tank 10 has a flange 14 that receives and circulates the coolant that has flowed out of the processing mother machine 2, sludge, abrasive grains, and the like mixed in the coolant. And a precipitation part 11 for precipitating the liquid. The bottom part of the precipitation part 11 is arrange | positioned in the position lower than the bottom part of the collar part 14, and the level | step difference is provided in the precipitation part 11 and the collar part 14. As shown in FIG. A pipe 15 is provided on the downstream side of the sedimentation section 11 and higher than the bottom of the sedimentation section 11 so that the coolant excluding the precipitated sludge, abrasive grains, etc. flows into the magnetic separation device 20. It has become.

  Moreover, in the sedimentation part 11, the side wall used as the side of the direction where a coolant flows becomes the inclination part 12 which has the inclination which goes to the outer side from the center side from the downward direction to the upper direction. In addition, the inclined part 12 should just be provided in the side wall of at least one side among the side walls of the precipitation part 11, and you may incline a part or all of a side wall. Then, when performing maintenance, sludge and abrasive grains that have settled at the bottom of the precipitation unit 11 from a scraping port (not shown) provided in the upper lid 13 of the first precipitation tank 10 using a scraping bar or the like. Etc. are scraped to the outside by utilizing the inclination of the inclined portion 12. A sludge box (not shown) similar to the sludge box 22 described later is installed in the vicinity of the first sedimentation tank 10 so as to store the scraped sludge and the like.

  The magnetic separation device 20 performs an adsorption treatment of a magnetic material (for example, sludge) from the contaminants mixed in the coolant flowing in from the processing mother machine 2. Specifically, a cylindrical magnet 21 that adsorbs sludge by magnetic force is rotatably supported inside the magnetic separation device 20, and after sludge adsorbed on the magnet 21 is dehydrated by a rubber roller 23, magnetic separation is performed. The sludge box 22 installed in the vicinity of the apparatus 20 is accommodated. In the absence of the first sedimentation tank 10, since the abrasive contains a lot of abrasive grains, the rubber rollers 23 are unevenly worn by the abrasive grains, which adversely affects the performance and life of the magnetic separation device 20. In the embodiment, since the contaminants are precipitated in the first settling tank 10 and the abrasive grains contained in the coolant are reduced, the magnetic separation device 20 performs adsorption treatment of sludge and the like. It is possible to prevent the deterioration and improve the lifetime.

  The coolant from which the sludge and the like have been removed by the magnetic separation device 20 passes through the pipe 25 and flows from the magnetic separation device 20 into the second settling tank 30.

  The second settling tank 30 is provided adjacent to the vortex tank 40 via the side wall 34, and coolant is swirled from the second settling tank 30 at a central height position of the side wall 34. A communication hole 31 for flowing out into the tank 40 is provided. The communication hole 31 is set so that the upper end is lower than the lower limit of the coolant level in the second settling tank 30, while sludge or the like that has settled in the second settling tank 30 is transferred to the vortex tank 40. It is set to a position that does not flow out. This is because contaminants having a specific gravity higher than that of the coolant are precipitated at the bottom of the second sedimentation tank 30, and contaminants having a specific gravity lower than that of the coolant float on the upper part of the second sedimentation tank 30. . As a result, the coolant flows from the second sedimentation tank 30 to the vortex tank 40 so as to remove them.

  Further, as shown in FIG. 4, the communication hole 31 prevents the contaminants remaining in the coolant flowing into the second sedimentation tank 30 through the pipe 25 from flowing into the vortex tank 40 as much as possible. It is provided at a position away from the pipe 25 (position near the inclined portion 32 described later).

  In addition, an inclined portion 32 having an inclination from the lower side to the upper side and extending from the center side to the outer side is provided inside the second sedimentation tank 30. Here, the inclined portion 32 is provided on the side wall farthest from the pipe 25. It has been. The inclined portion 32 may be provided on a part of the side wall or on the whole. When performing maintenance, sludge and abrasive grains that have settled at the bottom of the second sedimentation tank 30 from a scraping port (not shown) provided on the lid 33 at the top of the second sedimentation tank 30 using a scraping bar or the like. Etc. are scraped to the outside by utilizing the inclination of the inclined portion 32. A sludge box (not shown) similar to the sludge box 22 described above is installed in the vicinity of the second sedimentation tank 30 so as to store the scraped sludge and the like.

  The vortex tank 40 is provided with a pump 43 for pumping at the center. Three pipes 44, 45, and 46 are connected to the pumping pump 43. The pump 43 for pumping pumps up coolant from the vicinity of the bottom of the central portion of the vortex layer 40, and distributes the pumped coolant in the three directions of the pipes 44, 45 and 46. The pipe 44 is connected to the first settling tank 10 described above, and the coolant pumped up in the vortex tank 40 is returned to the first settling tank 10 so that the coolant is circulated throughout the system.

  On the other hand, the pipes 45 and 46 are extended from the central part of the vortex tank 40 in directions opposite to each other, and then connected to the vortex tank 40 itself, and each discharge port is located on the bottom side of the vortex tank 40 and It is arranged on the side wall side. The discharge ports of the pipes 45 and 46 have their orientations set so that the coolant is discharged in the same rotational direction (here, counterclockwise when viewed from above) around the pump 43 for pumping. Has been. Therefore, a vortex is formed in the coolant in the vortex tank 40 using the coolant returned from the discharge ports of the pipes 45 and 46 to the vortex tank 40 (eddy current forming means).

  In addition, curved plates 47 and 48 are arranged at four corners inside the rectangular vortex tank 40 so as to cover the corners in an arc shape when viewed from above. The curved plates 47 and 48 are provided so that the coolant flows smoothly in the vortex tank 40 when vortex is generated in the vortex tank 40 by the pipes 45 and 46. However, the curved plate 48 is disposed so as to be separated from the side wall of the vortex tank 40. Since the contaminants in the coolant are accumulated in the center by the vortex, the outside of the curved plate 48 (the far side from the center of the vortex tank 40) is a region where clean coolant from which contaminants are excluded flows. A pumping pump 41 (pumping pump) is provided outside the curved plate 48, and clean coolant pumped by the pumping pump 41 flows into the clean tank 50 through the pipe 42. Become.

  In this embodiment, the direction of the discharge port of the pipe 46 is set so that the coolant is discharged toward the communication hole 31 of the second sedimentation tank 30, and the arrangement position of the curved plate 48 and the pumping pump 41 is set. Is far from the communication hole 31 in the direction along the flow of the vortex. This also contributes to the clean coolant flowing outside the curved plate 48.

  The clean tank 50 into which the clean coolant of the vortex tank 40 is introduced is disposed on the upper part of the vortex tank 40. In the upper part of the vortex tank 40, a pumping pump 43 is arranged in the central part, and the pumping pump 41 is arranged in one of the corners, so that the pumping in the corners is pumped across the pumping pump 43 in the central part. A clean tank 50 is provided on the side opposite to the pump 41. The height of the upper surface of the clean tank 50 is the same as or lower than the uppermost parts of the pumps 41 and 43. Therefore, even if the clean tank 50 is arranged on the upper part of the vortex tank 40, the conventional tank 50 has a conventional height. The height is the same as the coolant purifier. Rather, since the swirl tank and the clean tank are conventionally arranged side by side at the same height, a large installation area is required for them. In this embodiment, the clean tank 50 is provided above the swirl tank 40. Since it is arranged, the installation area of the clean tank 50 becomes unnecessary, and the installation area of the apparatus can be reduced accordingly.

  The clean tank 50 includes a dressing pump 53 provided for discharging coolant for dressing the grinding wheel of the processing mother machine, a flushing pump 55 provided for discharging coolant to the bed of the processing mother machine, A liquid level gauge 52 is provided together with three pumps including a machining part pump 57 provided to discharge coolant to a machining location by the mother machine.

  The clean tank 50 is also provided with a drain portion 51, and an opening through which the coolant that overflows the clean tank 50 flows out from the bottom surface of the clean tank 50. By using this drain part 51, the overflowed coolant is circulated.

  The liquid level gauge 52 is configured to detect the position of the coolant level in the clean tank 50 and to notify when the position of the liquid level reaches a preset lower limit. Moreover, although the control apparatus which performs various control of the coolant purification apparatus 1 is installed in the exterior of the clean tank 50, illustration is abbreviate | omitted here.

  Although the 2nd sedimentation tank 30 and the vortex tank 40 are arrange | positioned in the same height position, the clean tank 50 is provided in the position more than the height of those upper surfaces. The arrangement positions of the first sedimentation tank 10 and the magnetic separation device 20 do not need to limit the height positions as long as the coolant can circulate. In addition, although illustration is abbreviate | omitted, not only the 1st sedimentation tank 10 and the 2nd sedimentation tank 30, but the vortex tank 40 and the clean tank 50 are each comprised so that an upper surface may be substantially covered with a lid | cover.

  Moreover, in the coolant purification apparatus 1 of a present Example, the 1st sedimentation tank 10, the magnetic separation apparatus 20, and the 2nd sedimentation tank 30 which become high cleaning frequency (maintenance frequency) are arrange | positioned at the apparatus outer peripheral side. . By providing the first settling tank 10 and the second settling tank 30, the contaminants flowing into the vortex tank 40 are reduced by actively removing the contaminants upstream of the vortex tank 40. Therefore, the cleaning frequency (maintenance frequency) of the vortex tank 40 itself can be lowered. As a result, the vortex tank 40 itself is not necessarily arranged on the outer peripheral side of the apparatus, and can be arranged on the inner side of the apparatus, increasing the degree of freedom in layout.

  The clean tank 50 is provided on the upper part of the vortex tank 40 independently of the vortex tank 40 and has a two-story structure. This has the purpose of saving the installation space of the entire device, but ensures the size of the vortex tank 40 (the size that accommodates the amount of coolant that needs to be purified) while saving space. It is also advantageous to do. In the case where the vortex tank and the clean tank are provided at the same height position, the sizes of the vortex tank and the clean tank are restricted, but in the case of a two-story structure as in this embodiment, the vortex tank 40 is The size of the clean tank 50 is not limited, and a large area can be secured. If the vortex tank 40 can secure a large area, the amount of coolant that can be purified can be increased, and the distance between the center and the outer periphery of the vortex flow is also increased, so that the amount of contaminants in the coolant flowing to the outer peripheral side can be reduced. The purification efficiency can be improved.

  As mentioned above, although the structure and arrangement | positioning of each part were demonstrated about the coolant purification apparatus 1 of a present Example, a series of operation | movement in the coolant purification apparatus 1 of a present Example is demonstrated here.

  In the coolant purifying apparatus 1 of the present embodiment, the coolant flowing out from the processing mother machine 2 first flows into the first settling tank 10. In the first settling tank 10, contaminants in the coolant are precipitated. Thereafter, the coolant from which contaminants have been removed by precipitation flows into the magnetic separation device 20 via the pipe 15. The coolant that has flowed into the magnetic separation device 20 adsorbs and separates most of the sludge by the magnet 21 and the rubber roller 23, and flows out to the second sedimentation tank 30 side through the pipe 25.

  The coolant flowing into the second sedimentation tank 30 from the magnetic separator 20 contains fine sludge, abrasive grains, etc. (hereinafter referred to as residual contaminants) that could not be removed by the magnetic separator 20. Such residual contaminants are precipitated in the second settling tank 30.

  The coolant from which most of the residual contaminants have been removed in the second sedimentation tank 30 further flows out to the vortex tank 40 side through the communication hole 31 provided in the side wall 34.

  As described above, the communication hole 31 provided in the side wall 34 is set so that its upper end is lower than the lower limit of the coolant level, and its lower end is sludge settled in the second settling tank 30. Is set at such a position as not to flow out from the second sedimentation tank 30 to the vortex tank 40. Therefore, when a situation occurs in which the coolant bubbles in the second sedimentation tank 30 and the residual contaminants are included in the foam, the residual contaminants do not flow out to the vortex tank 40 through the communication hole 31. In addition, the residual contaminants precipitated on the bottom surface of the second settling tank 30 do not flow out to the vortex tank 40 through the communication hole 31, and the coolant can flow out to the vortex tank 40.

  In the vortex tank 40, the coolant pumped by the pump for pumping 43 is discharged from the pipe 45 and the pipe 46 near the bottom surface and the side wall of the vortex tank 40, thereby forming a vortex. Since the coolant that has flowed into the vortex tank 40 contains residual contaminants such as fine sludge and abrasive grains that could not be removed by the second settling tank 30, when eddy current is generated in the vortex tank 40, Due to the vortex flow in the tank, the residual contaminants gather near the bottom of the central portion of the vortex tank 40 and are always pumped up by the pump 43 for pumping together with the coolant.

  As described above, the coolant containing residual contaminants pumped by the pump 43 for pumping is discharged from the pipes 45 and 46 to the bottom surface and the vicinity of the side wall of the vortex tank 40, while from the pipe 44 to the first sedimentation tank 10. Is sent out. Thereby, the coolant in the vortex tank 40 together with the coolant sent out from the processing mother machine 2 is again passed through the first settling tank 10, the magnetic separation device 20, and the second settling tank 30. While the precipitation tank 10, the magnetic separation device 20, the second precipitation tank 30 and the vortex tank 40 are circulated, the contaminant removal process is repeatedly performed.

  In the vortex tank 40, residual contaminants are accumulated at the center of the vortex flow in the tank, while clean coolant flows into the outer side of the curved plate 48 on the vortex outer peripheral side. A pumping pump 41 is provided in this inflow region, and clean coolant is pumped up and delivered to the clean tank 50.

  The clean tank 50 is provided with a drain part 51, and the coolant stored in the clean tank 50 flows into the vortex tank 40 again through an opening provided at the bottom of the drain part 51. . As described above, the coolant that has returned to the vortex tank 40 is repeatedly circulated through the first sedimentation tank 10, the magnetic separation device 20, the second sedimentation tank 30, and the vortex tank 40, and the contaminant removal process is performed repeatedly. I am doing so. Thereby, the coolant in the clean tank 50 can be made into a state with few contaminants.

  Then, the coolant stored in the clean tank 50 is pumped up to the dressing pump 53, the flushing pump 55, and the processing pump 57, and to the processing base machine 2 for grinding stone dressing, bed flushing, and processing part cooling, respectively. Will be sent out.

  As described above, according to the coolant purification apparatus 1 of the present embodiment, the first sedimentation tank 10 is provided on the upstream side of the magnetic separation apparatus 20, and the second sedimentation tank 30 is provided on the upstream side of the vortex tank 40. Since it is provided, contaminants flowing into the vortex tank 40 can be reduced. As a result, since there are few contaminants in the coolant in the vortex tank 40, more purified coolant can be sent to the clean tank 50, and purification efficiency can be improved.

  Further, most of the contaminants in the coolant are removed by the magnetic separation device 20 or settled on the bottom surfaces of the first sedimentation tank 10 and the second sedimentation tank 30, so that the coolant purification apparatus 1 is maintained during maintenance. By sweeping out the contaminants precipitated on the bottom surfaces of the first sedimentation tank 10 and the second sedimentation tank 30 arranged on the outer peripheral side of the container, it is possible to easily perform cleaning and improve maintainability. it can. In addition, since the amount of contaminants flowing into the vortex tank 40 is small, the amount of contaminants accumulated in the central portion of the vortex tank 40 is also reduced, and the frequency of performing cleaning such as pulling out the entire tank and replacing all the coolant is reduced. Thus, maintainability can be improved.

  Further, in the vortex tank 40, by generating a vortex in the coolant, residual contaminants that could not be removed by the first sedimentation tank 10, the magnetic separation device 20, and the second sedimentation tank 30 are collected near the bottom of the central portion. On the other hand, an inflow region into which clean coolant flows is formed outside the curved plate 48 on the outer peripheral side of the vortex. And since the clean tank 50 is provided independently from the vortex tank 40 and clean coolant is pumped up from this inflow region and sent to the clean tank 50, the purification efficiency can be improved.

  Further, the coolant sent out from the processing mother machine 2 is used for removing contaminants while circulating through the first sedimentation tank 10, the magnetic separation device 20, the second sedimentation tank 30, and the vortex tank 40. Furthermore, purification efficiency can be improved.

  Thus, according to the coolant purification apparatus 1 of the present embodiment, it is possible to improve the maintainability, improve the purification efficiency, and more reliably remove sludge and the like mixed in the coolant sent from the processing base machine. can do. Further, the installation area of the apparatus can be reduced, and for example, it can be stored in the lower part of the processing base machine 2.

  The present invention is suitable for a coolant purifying apparatus.

DESCRIPTION OF SYMBOLS 1 Coolant purification apparatus 2 Processing mother machine 10 1st sedimentation tank 11 Sedimentation part 12 Inclination part 20 Magnetic separation apparatus 30 2nd sedimentation tank 31 Communication hole 32 Inclination part 40 Eddy current tank 41, 43 Pumps for pumping 42, 44, 45, 46 Piping 47, 48 Curved plate 50 Clean tank 51 Drain section

Claims (5)

Magnetic separation means for removing magnetic material from contaminants mixed in the coolant used in the processing mother machine;
A vortex tank that passes through the magnetic separation means and has a vortex forming means for forming a vortex in the stored coolant in the central part, and accumulates the contaminants in the central part;
In order to send the purified coolant to the processing mother machine again, in the coolant purification device having a clean tank for storing the coolant on the outer peripheral side of the vortex of the vortex tank,
Between the processing base machine and the magnetic separation means, a collar part that receives and circulates coolant that has flowed out of the processing mother machine, and a bottom part that is lower than the bottom part of the collar part, and flows from the collar part A coolant purifier having a first sedimentation tank having a sedimentation section for sedimenting the contaminants in the coolant and allowing the coolant to flow into the magnetic separation means through the first sedimentation tank. . In the coolant purifying apparatus according to claim 1,
Among the side walls that are lateral to the coolant flowing direction in the settling portion, at least a part or all of one side wall is inclined from the lower side to the upper side and from the center side to the outer side. Coolant purification device. In the coolant purifying apparatus according to claim 1 or 2,
A second settling tank for precipitating the contaminants is provided between the magnetic separation means and the vortex tank, and a coolant is introduced into the vortex tank through the second settling tank. Coolant purification device. In the coolant purifying apparatus according to claim 3,
A coolant purifying apparatus, wherein a part or all of the side wall of the second sedimentation tank is inclined. In the coolant purifying apparatus according to claim 3 or 4,
The second settling tank and the vortex tank are provided adjacent to each other through a side wall, and a communication hole is provided on the side wall to communicate between the second settling tank and the vortex flow tank. The upper end is set to a position lower than the lower limit of the coolant level in the second settling tank, and the lower end of the communication hole is set to a position where the contaminants precipitated in the second settling tank do not flow out to the vortex tank. Coolant purification device characterized by the above.

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