JP4157915B2 - Coolant cleaning device - Google Patents

Description

[0001]
[Industrial application fields]
The present invention is a coolant cleaning that cleans the coolant by separating the chips from the coolant containing mainly processed chips discharged from a machine tool (hereinafter also referred to as a processing mother machine). Relates to the device.
[0002]
[Prior art]
In the industrial world, when processing coolant that contains chips or abrasive grains that have flowed out of the processing base machine with a coolant cleaning device equipped with a coolant tank, in order to improve recyclability, the bottom of the coolant tank Therefore, there is a demand for a coolant cleaning device that does not collect chips or abrasive grains.
[0003]
Fig. 3 shows how to process the magnetic chips contained in the coolant that flows out of the processing mother machine.
It is explanatory drawing which shows the front of the coolant cleaning apparatus which this applicant applied in Japanese Patent Application No. 2000-338331 which combined the magnetic separator and the bottomed cylindrical circular coolant tank which generate | occur | produces a vortex | eddy_current in the coolant in a coolant tank. .
[0004]
When the coolant containing the magnetic chips discharged from 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. The coolant after the process flows out from the magnetic separator 11 and extends along the cylindrical side plate inner peripheral surface 39 of the circular coolant tank 15 from the tangential direction of the cylindrical coolant tank 15 having a 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 flows out from the tangential direction of the circular coolant tank 15 along the cylindrical side plate inner peripheral surface 39 from the tangential direction of the circular coolant tank 15 by the coolant suction force by the coolant pump 12. An eddy current 29 is generated by the coolant that jets the coolant discharged from the coolant pump 12 installed in the pump chamber 23 into the circular coolant tank 15 from the coolant discharge nozzle 34.
[0006]
Fine residual chips and the like in the coolant that could not be collected by the magnetic separator 11 continue to settle down while rotating with the coolant by the vortex 29 and accumulate at the center of the bottom surface 26 of the circular coolant tank 15. To do.
[0007]
A coolant outlet 27 is installed 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 joined by the coolant outlet 27 and the flange 28. The coolant is sucked together with the coolant by the coolant pump 12 provided on the combined pump chamber 23, is again pumped to the magnetic separator 11 and is reprocessed, and this is repeated to clean the coolant.
[0008]
The intensity of the vortex 29 can be adjusted by adjusting the flow rate of the coolant ejected from the coolant discharge nozzle 34 into the circular coolant tank 15.
[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 equipped with a coolant pump 13 for pumping the cleaned coolant in the circular coolant tank 15 to the processing base machine. The coolant tank 15 and the clean tank 24 communicate with each other through a notch 36 having an underflow structure.
[0010]
In addition, when the processing base machine contains abrasive grains together with magnetic chips in the coolant that has flowed out of the processing base machine like a grinding machine, the coolant is given by the vortex flow in the circular coolant tank. , The abrasive grains in the coolant accumulated in the center of the circular coolant tank, or the residual chips of the magnetic material,
The coolant containing the abrasive grains or the remaining chips of the magnetic material is sucked by the coolant outlet installed in the center of the bottom surface of the circular coolant tank and the coolant pump provided on the pump chamber joined by the ridge. After flowing out from the circular coolant tank, it is sent to an abrasive collecting device with a built-in filter, etc., and after processing the abrasive with a filter etc., the coolant is again sent 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]
Claim 1 according to the present invention, when compared with the above-described method, when the coolant containing the chips flowing out from the processing mother machine, or the abrasive containing abrasive grains is performed by the coolant cleaning device,
Not only does it collect chips or abrasive grains at the bottom of the coolant tank, it can also handle floating chips in the clean tank attached to a part of the outer peripheral surface of the cylindrical side plate of the circular coolant tank. It is an object of the present invention to provide a coolant cleaning device that employs a simple method.
[0012]
[Means for Solving the Problems]
The coolant cleaning device according to claim 1 is:
A circular coolant tank with a bottomed cylindrical shape for generating a vortex in coolant containing mainly chips and the like, which has flowed out of a machine tool and stored in the tank,
Coolant suction means for sucking coolant containing chips in the circular coolant tank from the center of the bottom surface of the circular coolant tank;
Equipped with a coolant pump, which is mounted on a part of the outer peripheral surface of the cylindrical side plate of the circular coolant tank, for pressure-feeding the filtered coolant to the processing mother machine, and the cylindrical side plate is provided between the circular coolant tank In coolant cleaning equipment equipped with a clean tank communicated by a notch hole with an underflow structure,
In the upper part of the notch hole of the underflow structure for communicating between the clean tank provided on the outer peripheral surface of the cylindrical side plate of the circular coolant tank and the circular coolant tank,
With a notch hole having a vertical dimension that reaches the upper liquid level of the coolant stored in the circular coolant tank,
It has a vertical dimension at least similar to the vertical dimension of the notch hole that exceeds the upper liquid level of the coolant stored in the circular coolant tank, and at least between the vertical dimension of the notch hole, along the direction of rotation of the vortex The bottom plate-shaped partition plate is provided on the inner peripheral surface of the cylindrical side plate of the circular coolant tank so as to open the vertical direction and cover the notch hole.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
The coolant cleaning device according to the present embodiment is a coolant cleaning device that performs processing of coolant containing chips and the like that have flowed out of the processing base machine.
The coolant cleaning device according to the present embodiment stores chips or abrasive grains at the bottom of the coolant tank when processing coolant containing chips or abrasive grains flowing out from the processing base machine. At the same time, there is a need for a coolant cleaning device that can also treat floating chips in a clean tank mounted on a part of the outer peripheral surface of the cylindrical side plate of the circular coolant tank.
[0014]
Hereinafter, representative embodiments of the present invention will be described with reference to the drawings.
However, the dimensions, shapes, materials, relative positions, etc. of the components described in this embodiment are not intended to limit the scope of the present invention only to those unless otherwise specified. It is just an illustrative example.
The present invention relates to a coolant cleaning apparatus, and to an improvement related to the technology filed by the present applicant in Japanese Patent Application No. 2000-338331.
A coolant cleaning device according to this embodiment in the case where the chips contained in the coolant that has flowed out from the processing mother machine is a magnetic material will be described with reference to FIGS. 1 and 2.
[0015]
In the case where the chips contained in the coolant that has flowed out from the processing mother machine is a magnetic material, the coolant cleaning device according to this embodiment includes a magnetic separator 11, a coolant pump 12 for circulating coolant, and a processed clean coolant. The coolant pump 13 is a circular coolant tank 15 having two coolant pumps, such as a coolant pump 13 that is pumped to the processing mother machine.
[0016]
The coolant containing the magnetic chips and the like flowing out from the processing mother machine is first flowed into the magnetic separator 11 to process the magnetic chips in the coolant.
[0017]
The magnetic separator 11 is a flow path in which a rotating cylinder 16 containing a fixed magnet in a non-magnetic rotating cylinder is rotated by an electric motor 17 and a space is formed between the rotating cylinder 16 and a semicylindrical bottom plate 18. A coolant containing magnetic chips is passed through 19, and the sludge of the magnetic material in the coolant is attracted and separated on the outer periphery of the rotating cylinder 16. The treated 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 rotating 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 is also installed in 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 pumping the cleaned coolant to the processing base machine.
[0020]
The pump chamber 23 provided with the coolant pump 12 for circulating the coolant is connected to the coolant outlet 27 provided at the center of the bottom surface 26 of the circular coolant tank 15 at the lower portion of the pump chamber 23 by a flange 28. The coolant circulating coolant pump 12 provided in the pump chamber 23 pumps up the coolant in the pump chamber 23.
[0021]
The coolant pump 12 for circulating coolant pumps up the coolant in the pump chamber 23, so that the coolant in the circular coolant tank 15 flows into the pump chamber 23 from the coolant outlet 27 via the flange 28,
The coolant flow from the coolant outlet 27 to the pump chamber 23 in the rod 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]
The suction force generates a left-handed vortex 29 (Coriolis force) in the northern hemisphere from the coolant outlet 27 at the center of the bottom surface 26 of the circular coolant tank 15 to the liquid surface of the circular coolant tank 15 (Coriolis force). The remaining chips in the coolant that could not be collected by the coolant 11 continue to settle while rotating with the coolant by the left-handed vortex 29 generated in the circular coolant tank 15, and the bottom 26 of the circular coolant tank 15 is centered. Accumulate in part.
[0023]
Residual chips accumulated in the center of the bottom surface 26 of the circular coolant tank 15 that cannot be collected by the magnetic separator 11 due to the vortex 29 generated in the circular coolant tank 15 are collected in the circular coolant tank 15. From the coolant outlet 27 provided in the center of the bottom surface 26 of the steel, it is fed into the pump chamber 23 connected to the coolant outlet 27 by the eaves 28, and is pumped by the coolant pump 12 for circulating coolant provided in the pump chamber 23. It is attracted together with the coolant in the chamber 23 and sent again to the magnetic separator 11 to repeat this circulation.
[0024]
A part of the coolant is ejected into the circular coolant tank 15 through a coolant discharge nozzle 34 provided in the 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 flowing out from the magnetic separator 11 and flowing tangentially along the inner peripheral surface 39 of the cylindrical side plate 15 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 adjusting valve 35.
[0025]
A coolant pump 13 for sending the coolant on the outer peripheral surface of the circular coolant tank 15 having the highest cleanliness in the circular coolant tank 15 to a processing base machine is installed on a part of the outer peripheral surface 38 of the cylindrical side plate of the circular coolant tank 15. A clean tank 24 is provided, and the circular coolant tank 15 and the clean tank 24 communicate with each other through a notch 36 having an underflow structure.
[0026]
The circular coolant is provided above the notch hole 36 of the underflow structure 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 to communicate the clean tank 24 and the circular coolant tank 15. A notch hole 31 having a vertical dimension reaching the upper limit liquid level 37 of the coolant stored in the tank 15, and
At least the vertical dimension of the cutout hole 31 reaching the upper limit liquid level 37 or more of the coolant stored in the circular coolant tank 15, and at least between the vertical dimensions of the cutout hole 31,
A partition plate 14 having a 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 cover the notch hole 31 while opening in the vertical direction along the rotational direction of the vortex 29.
[0027]
By providing the partition plate 14 having the bottom surface 30 in which the vertical opening 40 is set along the direction of the vortex 29 in the cutout hole 31 for communicating the circular coolant tank 15 and the clean tank 24,
When the above-described vortex 29 is generated in the coolant whose liquid level in the circular coolant tank 15 is set to the upper limit liquid level 37 or less, the flow in the clean tank 24 along the flow direction of the vortex 29 in the circular coolant tank 15 is generated. A force (negative pressure) is generated for sucking the coolant into the circular coolant tank 15 through the notch 31,
As a result of the coolant flow from the clean tank 24 into the circular coolant tank 15, floating chips and the like floating on the coolant in the clean tank 24 are also transferred from the clean tank 24 to 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 floating chips in the clean tank 24 are efficiently processed, and the accumulation of chips in the clean tank 24 is prevented.
[0028]
The bottom surface 30 attached to the partition plate 14 is for avoiding the turbulent flow of the coolant in the partition plate 14 due to the vortex flow 29 generated in the lower part of the partition plate 14 in the vortex flow 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, and can be modified as appropriate without departing from the scope of the invention.
[0030]
【The invention's effect】
The upper liquid level in the circular coolant tank is formed above the notch hole of the underflow structure for communicating the bottomed cylindrical circular coolant tank for generating vortex flow and the clean tank according to claim 1. With a notch hole that extends,
According to the coolant cleaning device having at least the bottomed partition plate provided with an opening along the rotational direction of the vortex flow in the notch hole portion, exceeding the vertical dimension of the notch hole, the conventional coolant cleaning device As compared with the above, it is possible to provide a novel coolant cleaning device that can significantly reduce the frequency of cleaning in the clean tank attached to the coolant cleaning device.
In addition to the above effects, there are other effects such as prevention of coolant decay and reduction of running costs.For coolants such as industrial machines that are used repeatedly, maintaining the cleanliness and extending the service life of the processing machine Performance can be maintained and overall operation costs 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 apparatus 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 fluid pressure feed)
DESCRIPTION OF SYMBOLS 15 ... Circular coolant tank 16 ... Rotary cylinder 17 ... Electric motor 18 ... Bottom plate 19 ... Flow path 20 ... Diaphragm roller 21 ... Scrap plate 22 ... Receptacle box 23 ...・ Pump chamber 24 ... Clean tank 25 ... Floating chips 26 ... Bottom 27 ... Coolant outlet 28 ... 樋 29 ... Whirlpool 30 ... Bottom 31 ... Notch 32 ... Discharge pipe 33 ... T-shaped connection pipe 34 ... Coolant discharge nozzle 35 ... Flow rate adjusting valve 36 ... Notch hole 37 ... Upper liquid level 38 ... Cylindrical side plate Outer peripheral surface 39 ... Cylindrical side plate inner peripheral surface 40 ... Opening

Claims (1)

A circular coolant tank with a bottomed cylindrical shape for generating eddy currents in coolant containing mainly chips and the like which has been discharged from a machine tool and stored in the tank,
From the center of the bottom surface of the circular coolant tank, coolant suction means for sucking coolant containing chips etc. in 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 is provided for pressure-feeding the filtered coolant to a machine tool or the like, and between the circular coolant tank, the cylindrical side plate In a coolant cleaning device equipped with a clean tank communicated by a notch hole of an underflow structure provided in
In the upper part of the notch 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 cutout hole having a vertical dimension reaching the upper liquid level of the coolant stored in the circular coolant tank,
Having a vertical dimension that is at least similar to the vertical dimension of the cutout hole that exceeds the upper liquid level of the coolant, and at least between the vertical dimension of the cutout 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 rotational direction of the vortex and cover the notched hole. Coolant cleaning device.

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