JP2003275938A - Coolant cleaning device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a coolant cleaning device adopting a novel system for eliminating the existence of sludge such as chippings or abrasive grains staying on the bottom of a coolant tank. <P>SOLUTION: The coolant cleaning device for a coolant containing the sludge such as magnetic chippings or abrasive grains, flowing out of a machine tool for mainly performing grinding work, comprises a magnetic separator 11 for mainly removing the magnetic chippings, the cylindrical circularly swirling coolant tank 14 having a coolant circulating pump 12 for generating a swirl 13 of the coolant, a cyclone device 15 for removing residual sludge, produced by the swirl of the coolant, with centrifugal force on the sludge, a sludge sedimentation tank 16 for extracting the residual sludge discharged from the cyclone device 15 from the coolant with sedimentation, and a clean tank 18 provided with a clean pump 17 for forcibly feeding the filtered coolant to the machine tool for mainly performing grinding work. <P>COPYRIGHT: (C)2003,JPO

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic chip and an abrasive which flow out of a machine tool (hereinafter also referred to as a "working machine") for mainly performing grinding. The present invention relates to a coolant purifying apparatus for purifying a coolant by separating sludge from a coolant containing the sludge. 2. Description of the Related Art In the industry, in order to improve recyclability, when processing coolant containing sludge such as magnetic chips and abrasive grains flowing out of a processing mother machine, a coolant tank is required. There is a need for a coolant cleaning device that does not accumulate sludge at the bottom. FIG. 3 is a schematic explanatory view of a coolant cleaning apparatus generally provided in the related art for processing sludge such as magnetic chips and abrasive grains contained in a coolant flowing out of a processing mother machine. . The coolant containing sludge such as magnetic chips and abrasive grains, which has flowed out of the processing mother machine, flows into a dirty tank 46 through an inlet 45 of a coolant cleaning apparatus. A scraper conveyor 47 is provided in the dirty tank 46, and coarse magnetic chips and abrasives precipitated in the dirty tank 46 are scraped out by the scraper conveyor 47 into a sludge box 48 outside the dirty tank 46. It is. [0004] The coolant containing the sludge in the dirty tank 46 is pumped to the magnetic separator 50 by the dirty pump 49, and mainly magnetic chips in the coolant are removed in the magnetic separator 50. The coolant from which the magnetic chips have been mainly removed by the magnetic separator 50 flows into the clean tank 51, and is pumped to the working mother machine by the clean pump 52. Most of the fine chips that could not be removed by the magnetic separator 50 settle and deposit in the clean tank 51. [0005] The first aspect of the present invention.
Unlike the above-mentioned method, in order to eliminate sludge such as chips and abrasive particles that accumulate at the bottom of the coolant tank, a magnetic separator, a circular vortex coolant tank, a cyclone device, a sludge sedimentation tank, a clean tank, and the like An object of the present invention is to provide a coolant purifying apparatus adopting a novel system by combining respective coolant pumps for connecting devices with a coolant. A coolant cleaning apparatus according to a first aspect of the present invention provides a coolant containing sludge such as magnetic chips and abrasives, which is mainly discharged from a machine tool for performing grinding. A magnetic separator for mainly removing magnetic chips from inside, and a coolant circulation for aggregating residual sludge in the coolant flowing out of the magnetic separator and sucking the aggregated residual sludge together with the coolant A circular vortex coolant tank for generating a vortex in the coolant discharged from the magnetic separator, equipped with a pump;
Removal of residual sludge in the coolant sucked by the coolant circulation pump, generated by swirling the coolant, a cyclone device that performs centrifugal force acting on the sludge, and a cyclone device that is removed by the cyclone device and with a small amount of coolant from the cyclone device A sludge sedimentation tank for extracting the discharged residual sludge from the coolant by sedimentation, a coolant that is discharged from the outer peripheral side surface of the circular vortex coolant tank, is filtered in the circular vortex coolant tank, and is filtered by a cyclone device. And a clean tank provided with a clean pump for pressure-feeding the flowed coolant to the processing mother machine. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A coolant cleaning apparatus according to the present embodiment is a coolant cleaning apparatus for processing a coolant containing sludge such as magnetic chips and abrasive grains flowing out of a processing mother machine. is there. Note that the coolant cleaning apparatus according to the present embodiment cuts the coolant at the bottom of the coolant tank when processing the coolant containing sludge such as magnetic chips or abrasive grains flowing out of the processing mother machine as described above. There is a demand not to collect debris. Hereinafter, typical embodiments of the present invention will be described with reference to the drawings. However, the dimensions, shapes, materials, relative positions and the like of the components described in this embodiment are not intended to limit the scope of the present invention only to them unless otherwise specified. It is only an illustrative example. A coolant cleaning apparatus according to the present embodiment when the coolant flowing out of the processing mother machine contains sludge such as magnetic chips and abrasive grains will be described with reference to FIGS. 1 and 2. . In the case where the coolant flowing out of the processing mother machine contains sludge such as magnetic chips or abrasive grains, the coolant cleaning apparatus for the coolant flowing out of the processing mother machine according to the present embodiment mainly includes a magnetic material. It has a magnetic separator 11 for removing chips, a coolant circulation pump 12, a cylindrical circular vortex coolant tank 14 for generating a vortex 13 in the coolant, and a sludge generated by turning the coolant. Cyclone device 1 that removes residual sludge by working centrifugal force
5, a sludge settling tank 16 for extracting the remaining sludge discharged from the cyclone device 15 from the coolant by settling, and a clean pump 17 provided with a clean pump 17 for pumping the filtered coolant to the processing mother machine. It is constituted by a tank 18 and the like. The coolant containing the chips and abrasive grains of the magnetic material flowing out of the processing mother machine is first removed from the magnetic separator 11.
And mainly removes magnetic chips. The magnetic separator 11 rotates a rotating cylinder 19 having a fixed magnet built in a non-magnetic rotating cylinder by an electric motor 20, and rotates the rotating cylinder 19 and a semicircular bottom plate 21.
The processing is performed by passing a coolant containing magnetic chips into the flow path 22 having a predetermined gap therebetween, and adsorbing and separating the magnetic chips in the coolant to the outer periphery of the rotary cylinder 19. . The treated coolant flowing out of the magnetic separator 11 flows into the circular swirl coolant tank 14 from the tangential direction along the inner wall of the circular swirl coolant tank 14. Note that the chips mainly magnetically adsorbed on the outer periphery of the rotating cylinder 19 are dehydrated by being pressed by the squeezing roller 23, scraped off by the scraping plate 24, and discharged into the receiving box 25. The circular vortex coolant tank 14 is provided with a coolant circulating pump 12. The coolant circulating pump 12 generates the coolant by pumping the coolant at the center of the bottom surface 26 of the circular vortex coolant tank 14 via a pipe 27. The coolant in the circular swirl coolant tank 14 is located on the bottom surface 26 of the circular swirl coolant tank 14.
The suction force drawn from the center to the outside of the circular swirl coolant tank 14 causes the left-handed swirl in the northern hemisphere from the coolant outlet 28 at the center of the bottom surface 26 of the circular swirl coolant tank 14 to the upper surface of the liquid surface of the circular swirl coolant tank 14. 13 (Coriolis force), the remaining chips and abrasive grains in the coolant that could not be removed by the magnetic separator 11 are removed by the left-handed vortex 13 in the circular vortex coolant tank 14 and the aforementioned magnetic separator 11. , Along with the inner wall of the circular vortex coolant tank 14, the rotational force of the coolant flowing into the circular vortex coolant tank 14 from its tangential direction causes the sedimentation to gradually occur while rotating with the coolant, thereby gradually causing the circular vortex coolant tank 14 to rotate.
At the center of the bottom surface 26. Due to the vortex 13 generated in the circular vortex coolant tank 14, residual chips and abrasive grains in the coolant that cannot be removed by the magnetic separator 11 and are collected at the center of the bottom surface 26 of the circular vortex coolant tank 14 are removed. From the coolant outlet 28 provided at the center of the bottom surface 26 of the circular vortex coolant tank 14, the coolant in the circular vortex coolant tank 14 was sucked by the coolant circulation pump 12 via the pipe 27 together with the coolant, and contained in the coolant. In order to process residual chips and abrasive grains,
It is sent to the cyclone device 15. The cyclone device 15 spirally injects a coolant containing residual chips and abrasives sucked by the coolant circulation pump 12 from the inlet nozzle 29 in a thin plate-like flow in a tangential direction of the cylindrical portion 30. When the vortex 31 descends along the conical wall 32 and descends toward the lower nozzle 33, an upward vortex 34 is generated by the throttle effect of the lower nozzle 33. The rising vortex 34 has the same rotational direction as the descending vortex 31, but the direction of movement is reversed, and the coolant is captured by the upper nozzle 35 by the rising vortex 34 and flows out of the upper nozzle 35. The removal of solid particles 36 such as residual chips and abrasive grains contained in the coolant is carried out by centrifugal force acting on the swirling particles. It is accumulated on a smooth inner wall, slides down the wall, is discharged from the lower nozzle 33 together with a small amount of coolant, and flows into a sludge settling tank 16 described later. The coolant, from which solid particles 36 such as residual chips and abrasive grains contained in the coolant are removed and which has been cleaned, becomes the upward vortex 34 as described above, is captured by the upper nozzle 35, and flows out from the upper nozzle 35. , And flows into a clean tank 18 described later. The solid particles 36 such as residual chips and abrasives discharged together with a small amount of coolant from the lower nozzle 33 of the cyclone device 15 are supplied to the sludge settling tank 16 as described above.
It flows into the inside. Solid particles 36 such as remaining chips and abrasives discharged together with a small amount of coolant from the lower nozzle 33 of the cyclone device 15 are supplied to the rectifying box 3 in the sludge settling tank 16.
7 and settles in the coolant in the sludge settling tank 16 and deposits on the bottom 38 of the sludge settling tank 16.
This settled sludge is scraped off by the deck 39 along the side inclined plate 40 of the sludge settling tank 16,
Can be discharged outside. The coolant in the sludge settling tank 16 which has flowed into the sludge settling tank 16 and in which sludge settling and filtration of residual chips and abrasive grains contained in the coolant has been completed,
Overflow from the partition wall 42 in the sludge settling tank 16 together with the buoyant sludge 41 floating on the coolant,
It is discharged from the coolant outlet 43 to the outside of the sludge settling tank 16, sent to the magnetic separator 11, and re-filtered. A part of the outer wall of the circular vortex coolant tank 14 has a coolant discharged from the upper nozzle 35 of the cyclone device 15 and a circular vortex coolant having the highest cleanliness of the coolant in the circular vortex coolant tank 14. A clean tank 18 having a clean pump 17 for feeding the coolant on the outer peripheral surface of the tank 14 to the processing mother machine is provided.
The clean tank 18 is communicated with the clean tank 18 by a notch 44 having an underflow structure. In addition, the device of the present invention is not limited to the embodiment described above and shown in the drawings as described above, and can be appropriately modified without departing from the gist. According to the coolant cleaning apparatus of the first aspect, when the coolant containing sludge such as magnetic chips and abrasive grains, which is discharged from the processing mother machine, is processed, the magnetic separation is performed. By using a machine, a circular vortex coolant tank, a cyclone device, and a sludge sedimentation tank, it is possible to provide a coolant device employing a novel method that does not accumulate sludge such as magnetic chips and abrasive grains at the bottom of the coolant tank. Also,
In addition to the above effects, the frequency of cleaning the coolant tank is reduced, coolant rot is prevented, running costs are reduced,
With respect to coolants for industrial machines and the like that are repeatedly used, it is possible to maintain the cleanliness and extend the life of the coolant, thereby maintaining the performance of the processing mother machine and contributing to a reduction in overall operating costs.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory view showing the front of a coolant cleaning apparatus of the present invention. FIG. 2 is an explanatory view showing a plane of the coolant cleaning device of the present invention. FIG. 3 is a perspective view showing a conventional coolant cleaning device. [Description of Signs] 11 ・ ・ ・ Magnetic separator 12 ・ ・ ・ Coolant circulation pump 13 ・ ・ ・ Swirl 14 ・ ・ ・ Circular swirl coolant tank 15 ・ ・ ・ Cyclone device 16 ・ ・ ・ Sludge settling tank 17 ・ ・ ・ Clean Pump 18 Clean tank 19 Rotating cylinder 20 Electric motor 21 Bottom plate 22 Flow path 23 Squeeze roller 24 Scraper plate 25 Receiving box 26・ Bottom surface 27 ・ ・ ・ Piping 28 ・ ・ ・ Coolant outlet 29 ・ ・ ・ Inlet nozzle 30 ・ ・ ・ Cylinder 31 ・ ・ ・ Downward vortex 32 ・ ・ ・ Conical wall 33 ・ ・ ・ Lower nozzle 34 ・ ・ ・ Upward vortex 35 ... top nozzle 36 ... solid particles 37 ... rectifying box 38 ... bottom 39 ... derecchi 40 ... side inclined plate 41 ... floating sludge 42 ... partition 43 ...・ Coolant outlet 4 ... Notch hole 45 ... Inflow port 46 ... Dirty tank 47 ... Scraper conveyor 48 ... Sludge box 49 ... Dirty pump 50 ... Magnetic separator 51 ... Clean tank 52 ... Clean pumps

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) B03C 1/00 B03C 1/00 A 1/02 1/02 C 1/12 1/12 1/30 1/30 B B04C 9/00 B04C 9/00 B23Q 11/10 B23Q 11/10 Z B24B 55/03 B24B 55/03 F term (reference) 3C011 BB32 BB33 EE08 3C047 FF00 GG17 GG18 4D053 AA03 AB04 BA01 BB01 BC01 BD04 DA02 DA10

Claims (1)

Claims 1. A magnetic material chip is mainly discharged from a coolant containing sludge such as magnetic chips and abrasive grains, which is discharged from a machine tool for mainly performing grinding. A magnetic separator for removing; and a coolant circulation pump for aggregating residual sludge in the coolant flowing out of the magnetic separator and sucking the aggregated residual sludge together with a coolant. A circular vortex coolant tank for generating a vortex in the coolant discharged from the vessel; and the sludge generated by turning the coolant to remove the remaining sludge in the coolant sucked by the coolant circulation pump. A centrifugal force acting on the cyclone, and a small amount of cyclone removed by the cyclone. A sludge settling tank for extracting the remaining sludge discharged from the cyclone device together with the coolant from the coolant by settling, and a filtration in the circular vortex coolant tank, which is discharged from an outer peripheral side surface of the circular vortex coolant tank. And a clean tank provided with a clean pump for pumping the flowed coolant to the machine tool, into which the cooled coolant and the coolant filtered by the cyclone device flow. Coolant cleaning device.