JP2004142090A - Coolant cleaning device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a coolant cleaning device taking a new system for considerably reducing the cleaning frequency of cleaning the inside of a clean tank fitted to a bottomed, cylindrical circular coolant tank. <P>SOLUTION: A notched hole 31 exceeding the upper limit level 37 in an circular coolant tank 15 is formed in an upper portion of a notched hole 36 of an underflow structure to communicate the bottomed cylindrical circular coolant tank 15 to generate the vortex flow 29 and the clean tank 24. A partition plate 14 having a bottom side 30 with an opening part 40 along the rotational direction of the vortex flow 29 exceeding the longitudinal dimension of the notched hole 31 is provided on the notched hole 31 portion. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
[Industrial applications]
The present invention relates to a coolant cleaner that separates chips and the like from a coolant that mainly contains chips after processing and that has flowed out from a machine tool or the like (hereinafter also referred to as a processing mother machine) to clean the coolant. Related to the device.
[0002]
[Prior art]
In the industry, in order to improve the recyclability, when the coolant that contains chips or abrasives flowing out of the processing mother machine is treated by a coolant cleaning device equipped with a coolant tank, the bottom of the coolant tank is used. There is a demand for a coolant cleaning apparatus that does not accumulate chips or abrasive grains.
[0003]
FIG. 3 shows a process for processing magnetic chips and the like contained in the coolant flowing out of the processing mother machine.
It is explanatory drawing which shows the front of the coolant cleaning apparatus which applied the Japanese Patent Application No. 2000-338331 which combined the magnetic separator and the bottomed cylindrical circular coolant tank which generates a vortex in the coolant in a coolant tank. .
[0004]
When the coolant containing magnetic chips and the like flowing out of the processing mother machine flows into the magnetic separator 11, the magnetic chips in the coolant are adsorbed and separated by the magnet drum of the magnetic separator 11, and the coolant is removed. The coolant after the treatment is discharged from the magnetic separator 11 and flows along the inner peripheral surface 39 of the cylindrical side plate of the circular coolant tank 15 from the tangential direction of the cylindrical coolant tank 15 having the bottomed cylindrical shape. It flows into the tank 15.
The magnetic chips in the coolant collected by the magnetic separator 11 are discharged into the receiving box 22.
[0005]
The coolant in the circular coolant tank 15 is sucked by the coolant pump 12, and flows out from the magnetic separator 11 and flows along the inner peripheral surface 39 of the circular coolant tank 15 from the tangential direction of the circular coolant tank 15. The vortex flow 29 is generated by the coolant that has been discharged and a portion of the coolant that has been discharged from the coolant pump 12 installed in the pump chamber 23 and that is discharged from the coolant discharge nozzle 34 into the circular coolant tank 15.
[0006]
Fine residual chips and the like in the coolant that could not be collected by the magnetic separator 11 continue to settle while rotating with the coolant due to the vortex 29, and accumulate in the center of the bottom surface 26 of the circular coolant tank 15. I do.
[0007]
A coolant outlet 27 is provided at the center of the bottom surface 26 of the circular coolant tank 15, and minute residual chips accumulated at the center of the bottom surface 26 of the circular coolant tank 15 are connected by the coolant outlet 27 and the gutter 28. The coolant is sucked together with the coolant by the coolant pump 12 provided on the combined pump chamber 23, is again pressure-fed to the magnetic separator 11, and is reprocessed. This is repeated to clean the coolant.
[0008]
By adjusting the flow rate of the coolant ejected from the coolant discharge nozzle 34 into the circular coolant tank 15, the strength of the vortex 29 can be adjusted.
[0009]
A part of the outer peripheral surface 38 of the cylindrical side plate of the circular coolant tank 15 is provided with a clean tank 24 having a coolant pump 13 for pumping the purified coolant in the circular coolant tank 15 to the processing mother machine. The coolant tank 15 and the clean tank 24 communicate with each other by a notch 36 having an underflow structure.
[0010]
In addition, when the processing mother machine contains abrasive grains together with the chips of the magnetic material in the coolant discharged from the processing mother machine like a grinder, the coolant provided with the vortex in the circular coolant tank is used. Abrasive particles in the coolant accumulated in the center of the circular coolant tank, or residual chips of the magnetic material,
A coolant containing abrasive grains or residual chips of a magnetic material is sucked by a coolant outlet provided at a center of a bottom surface of a circular coolant tank and a coolant pump provided on a pump chamber joined by a gutter. By flowing it out of the circular coolant tank, sending it to the abrasive collection device with a built-in filter, etc., and processing the abrasive with a filter, etc., then sending the coolant again into the magnetic separator to reprocess the remaining chips, This circulation is repeated to clean the coolant. (Not shown)
[0011]
[Problems to be solved by the invention]
Claims 1 according to the present invention, when compared with the above-mentioned method, when performing the processing of the coolant that contains chips or abrasive grains flowing out of the processing mother machine by the coolant cleaning device,
Not only does not accumulate chips or abrasive grains at the bottom of the coolant tank, it can also treat floating chips in the clean tank mounted on a part of the outer peripheral surface of the cylindrical side plate of the circular coolant tank. An object of the present invention is to provide a coolant cleaning apparatus employing a simple system.
[0012]
[Means for Solving the Problems]
The coolant cleaning device according to claim 1 is
A cylindrical coolant tank with a bottomed cylindrical shape for generating a vortex in coolant mainly containing chips and the like that has flowed out of the machine tool and stored in the tank,
Coolant suction means for sucking coolant containing chips and the like in the circular coolant tank from the center of the bottom of the circular coolant tank,
A coolant pump was mounted on a part of the outer peripheral surface of the cylindrical side plate of the circular coolant tank for pumping the filtered coolant to the processing mother machine, and the space between the circular coolant tank and the circular coolant tank was provided on the cylindrical side plate. In a coolant purifier equipped with a clean tank connected by a notch hole of the underflow structure,
Above the notched hole of the underflow structure for communicating between the clean tank and the circular coolant tank provided on the outer peripheral surface of the cylindrical side plate of the circular coolant tank,
With a notched hole having a vertical dimension that reaches or exceeds the upper limit liquid level of the coolant stored in the circular coolant tank,
At least the vertical dimension of the notch hole exceeding the upper limit liquid level of the coolant stored in the circular coolant tank has a vertical dimension similar to that of the notch hole. And a bottomed partition plate is provided on the inner peripheral surface of the cylindrical side plate of the circular coolant tank so as to cover the cutout hole.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
The coolant cleaning device according to the present embodiment is a coolant cleaning device that performs processing of a coolant containing chips and the like flowing out of a processing mother machine.
Note that the coolant cleaning apparatus according to the present embodiment collects chips or abrasives at the bottom of the coolant tank when performing processing of the chips that have flowed out of the processing mother machine or the coolant that contains abrasives. At the same time, there is a demand for a coolant cleaning apparatus capable of treating floating chips in a clean tank mounted on a part of the outer peripheral surface of a cylindrical side plate of a circular coolant tank.
[0014]
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.
The present invention relates to a coolant cleaning apparatus, and to an improvement related to a technique applied by the present applicant in Japanese Patent Application No. 2000-338331.
A coolant cleaning device according to the present embodiment when the chips contained in the coolant flowing out of the processing mother machine are magnetic materials will be described with reference to FIGS. 1 and 2.
[0015]
When the chips contained in the coolant flowing out of the processing mother machine are magnetic substances, the coolant cleaning apparatus according to the present embodiment includes a magnetic separator 11, a coolant pump 12 for coolant circulation, and a processed clean coolant. It is composed of a circular coolant tank 15 provided with two coolant pumps, a coolant pump 13 for pressure feeding to a processing mother machine.
[0016]
The coolant containing magnetic chips and the like flowing out of the processing mother machine is first flowed into the magnetic separator 11, and the processing of the magnetic chips in the coolant is performed.
[0017]
The magnetic separator 11 rotates a rotating cylinder 16 having a fixed magnet built in a non-magnetic rotating cylinder by an electric motor 17, and forms a flow path in which a predetermined gap is formed between the rotating cylinder 16 and a semi-cylindrical bottom plate 18. The coolant is passed through a coolant containing magnetic chips, and the sludge of the magnetic material in the coolant is absorbed and separated on the outer periphery of the rotary cylinder 16. The processed coolant that has flowed out of the magnetic separator 11 flows into the circular coolant tank 15 from the tangential direction along the inner wall of the circular coolant tank 15.
[0018]
The magnetic sludge adsorbed on the outer periphery of the rotary cylinder 16 is pressed by the squeezing roller 20 to be dehydrated, scraped off by the scraping plate 21, and discharged into the receiving box 22.
[0019]
In the pump chamber 23 installed on the outer peripheral surface 38 of the cylindrical side plate of the circular coolant tank 15, the coolant pump 12 for circulating the coolant, and similarly, the clean tank installed on the outer peripheral surface 38 of the cylindrical side plate of the circular coolant tank 15. 24 is provided with a coolant pump 13 for pressure-feeding the cleaned coolant to the processing mother machine.
[0020]
The pump chamber 23 provided with the coolant pump 12 for circulating the coolant is connected by a gutter 28 to a coolant outlet 27 provided at a lower part of the pump chamber 23 and a center part of a bottom surface 26 of the circular coolant tank 15, The coolant pump 12 for circulating coolant provided in the pump chamber 23 pumps the coolant in the pump chamber 23.
[0021]
The coolant in the circular coolant tank 15 flows from the coolant outlet 27 through the gutter 28 into the pump chamber 23 by the coolant pump 12 for coolant circulation pumping the coolant in the pump chamber 23,
The flow of the coolant from the coolant outlet 27 into the pump chamber 23 in the gutter 28 becomes a suction force for sucking the coolant in the circular coolant tank 15 to the outside of the circular coolant tank 15.
[0022]
In the northern hemisphere, a left-handed vortex 29 is generated (Coriolis force) from the coolant outlet 27 at the center of the bottom surface 26 of the circular coolant tank 15 to the upper surface of the liquid surface of the circular coolant tank 15 by the above-mentioned suction force. The remaining chips in the coolant that could not be collected by the coolant 11 continue to settle gradually while rotating with the coolant by the left-handed vortex 29 generated in the coolant tank 15, and the center of the bottom surface 26 of the coolant tank 15. Accumulate in the department.
[0023]
Due to the vortex 29 generated in the circular coolant tank 15, the chips remaining in the coolant that could not be collected by the magnetic separator 11 and accumulated in the center of the bottom surface 26 of the circular coolant tank 15 are removed from the circular coolant tank 15. The coolant is supplied from a coolant outlet 27 provided at the center of a bottom surface 26 of the pump chamber 23 to a pump chamber 23 joined to the coolant outlet 27 by a gutter 28, and is pumped by a coolant pump 12 provided in the pump chamber 23 for coolant circulation. It is sucked together with the coolant in the chamber 23, sent to the magnetic separator 11 again, and repeats this circulation.
[0024]
A part of the coolant is injected into the circular coolant tank 15 through a coolant discharge nozzle 34 provided in a tangential direction of the circular coolant tank 15 by a T-shaped connection pipe 33 provided in the middle of the discharge pipe 32 of the coolant pump 12. Coolant,
Or
The vortex 29 is amplified by the coolant that has flowed out of the magnetic separator 11 and tangentially flows along the inner peripheral surface 39 of the cylindrical side plate of the circular coolant tank 15, and the effect of the vortex 29 is increased. .
Further, the flow rate of the coolant ejected from the coolant discharge nozzle 34 can be adjusted by the flow rate adjustment valve 35.
[0025]
At a part of the outer peripheral surface 38 of the cylindrical side plate of the circular coolant tank 15, a coolant pump 13 for feeding the coolant on the outer peripheral surface of the circular coolant tank 15 having the highest cleanliness in the circular coolant tank 15 to the processing mother machine is installed. A clean tank 24 is provided, and the circular coolant tank 15 and the clean tank 24 are communicated with each other by a notch 36 having an underflow structure.
[0026]
A circular coolant is provided above a notched hole 36 of an underflow structure for communicating the clean tank 24 and the circular coolant tank 15 provided on the outer peripheral surface 38 of the cylindrical side plate of the circular coolant tank 15 to which the clean tank 24 is mounted. A cut-out hole 31 having a vertical dimension reaching the upper limit liquid level 37 or more of the coolant stored in the tank 15 is provided.
At least the vertical dimension of the notch 31 reaching the upper limit liquid level 37 or more of the coolant stored in the circular coolant tank 15 is the same as the vertical dimension of the notch 31.
The partition plate 14 having the bottom surface 30 is provided on the inner peripheral surface 39 of the cylindrical side plate of the circular coolant tank 15 so as to open vertically in the rotation direction of the vortex flow 29 and cover the cutout hole 31.
[0027]
By providing the above-described partition plate 14 having the bottom surface 30 in which the vertical opening 40 is set in the direction of the vortex 29 in the notch hole 31 that connects the circular coolant tank 15 and the clean tank 24,
When the above-mentioned swirl flow 29 is generated in the coolant in which the liquid level in the circular coolant tank 15 is set to be equal to or lower than the upper limit liquid level 37, the inside of the clean tank 24 along the flow direction of the swirl flow 29 in the circular coolant tank 15 is formed. A force (negative pressure) for sucking the coolant into the circular coolant tank 15 via the notch hole 31 is generated,
Due to the flow of the coolant from the clean tank 24 into the circular coolant tank 15 due to this, floating chips and the like floating on the coolant in the clean tank 24 also move from the clean tank 24 into the circular coolant tank 15 together with the coolant. It moves and is reprocessed in the circular coolant tank 15, and this circulation is repeated, so that the processing of the floating chips in the clean tank 24 is efficiently performed, and the accumulation of chips in the clean tank 24 is prevented.
[0028]
In addition, the bottom surface 30 attached to the partition plate 14 serves to prevent the turbulent flow of the coolant in the partition plate 14 due to the vortex 29 generated in the lower portion of the partition plate 14 among the vortex flows 29 generated in the circular coolant tank 15. It is a measure.
[0029]
In addition, as described above, the device of the present invention is not limited to the embodiment described above and shown in the drawings, but can be appropriately changed without departing from the gist.
[0030]
【The invention's effect】
The upper limit liquid level in the circular coolant tank is formed above the notch hole of the underflow structure for communicating the circular cylindrical coolant tank with a bottom and the clean tank according to claim 1 for generating a vortex. With a notch that exceeds
According to a coolant cleaning apparatus having at least a bottomed partition plate provided with an opening extending in the direction of rotation of the vortex, the coolant cleaning apparatus having at least a vertical dimension exceeding the vertical dimension of the notch hole, the conventional coolant cleaning apparatus A new coolant cleaning device can be provided which can significantly reduce the frequency of cleaning the inside of the clean tank attached to the coolant cleaning device as compared with the coolant cleaning device.
Further, in addition to the above effects, effects such as prevention of decay of the coolant and reduction of running costs are conceivable.For coolants such as industrial machines that are used repeatedly, by maintaining cleanliness and extending the service life, the working mother machine is improved. The performance can be maintained and the overall operation cost can be reduced.
[Brief description of the drawings]
FIG. 1 is an explanatory front view showing an example of a coolant cleaning device of the present invention.
FIG. 2 is an explanatory plan view showing an example of a coolant cleaning device of the present invention.
FIG. 3 is an explanatory front view showing an example of a conventional coolant cleaning device.
[Explanation of symbols]
11 ... magnetic separator 12 ... coolant pump (for coolant circulation)
13: Coolant pump 14: Partition plate (for clean liquid pressure feed)
15: Circular coolant tank 16: Rotating cylinder 17: Electric motor 18: Bottom plate 19: Flow path 20: Squeeze roller 21: Scraper plate 22: Receiving box 23 ...・ Pump room 24 ・ ・ ・ Clean tank 25 ・ ・ ・ Floating chips 26 ・ ・ ・ Bottom surface 27 ・ ・ ・ Coolant outlet 28 ・ ・ ・ Gutter 29 ・ ・ ・ Swirl 30 ・ ・ ・ Bottom surface 31 ・ ・ ・ Notch hole 32 ... discharge pipe 33 ... T-shaped connection pipe 34 ... coolant discharge nozzle 35 ... flow rate adjustment valve 36 ... notched hole 37 ... upper limit liquid level 38 ... cylindrical side plate Outer peripheral surface 39 ・ ・ ・ Inner peripheral surface of cylindrical side plate 40 ・ ・ ・ Opening

Claims (1)

A cylindrical coolant tank with a bottomed cylindrical shape for generating a vortex in coolant mainly containing chips and the like that has flowed out of the machine tool and stored in the tank,
Coolant suction means for sucking a coolant containing chips or the like in the circular coolant tank from the bottom center of the circular coolant tank,
A coolant pump mounted on a part of the outer peripheral surface of the cylindrical side plate of the circular coolant tank for pumping the filtered coolant to a machine tool or the like is provided, and between the circular coolant tank and the cylindrical side plate. In a coolant purifying apparatus equipped with a clean tank communicated with a notch hole of an underflow structure provided in
Above the notched hole of the underflow structure for communicating between the clean tank and the circular coolant tank provided on the outer peripheral surface of the cylindrical side plate of the circular coolant tank,
With a new notch having a vertical dimension that reaches or exceeds the upper limit liquid level of the coolant stored in the circular coolant tank,
At least the vertical dimension of the notch hole exceeding the upper limit liquid level of the coolant has the same vertical dimension, at least between the vertical dimension of the notch hole,
A bottomed partition plate is provided on the inner peripheral surface of the cylindrical side plate of the circular coolant tank so as to open in the vertical direction along the rotation direction of the vortex and cover the cutout hole. Coolant cleaning device.

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