JP2005040936A - Coolant cleaning device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a coolant cleaning device which suppresses power consumption to the utmost, does not accumulate cutting chips on the bottom of the coolant tank, and adopts a new system in the coolant cleaning device treating coolant containing cutting chips of the magnetic materials discharge from an industrial machine such as a machine tool. <P>SOLUTION: The device is equipped with a magnetic separator 11 mainly removing cutting chips of magnetic materials, a circular type vortex coolant tank 14 for generating vortex flow in the coolant, a jet pump 12 for sucking a remaining sludge in the coolant accumulated at the center of the circular-type vortex coolant tank 14 with the coolant, and a clean tank 17 for storing the filtered coolant, which is equipped with at least one set of the coolant pump such as a clean pump 15 for press-feeding a filtered coolant to the industrial machine such as the machine tool. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

Detailed Description of the Invention

Industrial application fields

  The present invention is a coolant cleaning apparatus that cleans coolant by separating and treating sludge from coolant containing sludge such as magnetic chips, which mainly flows out from a machine tool (hereinafter also referred to as a processing mother machine). About.

  In the industry, to improve recyclability, power consumption can be reduced as much as possible when processing coolant containing sludge such as magnetic chips that have flowed out of the processing base machine. There is a demand for a coolant cleaning device that does not accumulate sludge at the bottom of the slag.

  In view of this, the present applicant relates to a coolant cleaning device using a circular vortex coolant tank, as described in, for example, Japanese Utility Model Registration No. 3060849, Japanese Patent Application Laid-Open No. 2002-001013, Japanese Patent Application Laid-Open No. 2002-103172, and the like. However, it did not mention problems related to energy reduction, such as suppression of power consumption.

Problems to be solved by the invention

  Claim 1 according to the present invention has been made in connection with the above proposal, and in order to suppress power consumption as much as possible and to eliminate sludge such as magnetic chips accumulated on the bottom of the coolant tank, It is an object of the present invention to provide a coolant cleaning device that employs a novel system, which is a combination of a vacuum vessel, a circular vortex coolant tank, a jet pump, a clean tank, and at least one coolant pump provided in the clean tank.

Means for solving the problem

The coolant cleaning device according to claim 1 is:
A magnetic separator mainly for removing magnetic chips from the coolant containing sludge such as magnetic chips flowing out from the processing mother machine;
A circular vortex coolant tank for storing the coolant flowing out of the magnetic separator and generating a vortex in the coolant;
A jet pump for collecting residual sludge in the coolant discharged from the magnetic separator, which is accumulated in the center of the circular vortex coolant tank by vortex, together with the coolant;
It is characterized by comprising a clean tank provided with at least one coolant pump for pumping the coolant filtered in the circular vortex coolant tank to the processing base machine.

The coolant cleaning apparatus according to the present embodiment is a coolant cleaning apparatus that performs processing of coolant containing sludge such as magnetic chips that have flowed out of a processing mother machine.
Note that the coolant cleaning device according to the present embodiment suppresses power consumption as much as possible when processing coolant containing sludge such as magnetic chips that have flowed out of the processing base machine as described above, and also reduces coolant. There is a demand for not storing sludge such as magnetic chips at the bottom of the tank.
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.

  A coolant cleaning device according to this embodiment in the case where sludge such as magnetic chips is contained in the coolant that has flowed out of the processing mother machine will be described with reference to FIGS. 1, 2, and 3.

The coolant cleaning device for coolant that has flowed out of the processing base machine according to this embodiment, when the sludge such as magnetic chips is contained in the coolant that has flowed out of the processing base machine,
A magnetic separator 11 for mainly removing magnetic chips and a jet pump 12 as a circulation pump;
A clean tank 17 equipped with a bottomed cylindrical circular vortex coolant tank 14 for generating a vortex 13 in the coolant, a clean pump 15 for pumping the filtered coolant to the processing base machine, and a bed washing pump 16. ,
Etc.

  The coolant containing the magnetic chips and abrasives flowing out from the processing mother machine is first introduced into the magnetic separator 11 to mainly remove the magnetic chips.

The magnetic separator 11 is a flow path in which a rotating cylinder 18 containing a fixed magnet in a nonmagnetic rotating cylinder is rotated by an electric motor 19, and a space between the rotating cylinder 18 and a semicircular bottom plate 20 is formed with a predetermined gap. A coolant containing magnetic chips is passed through 21, and the magnetic chips in the coolant are adsorbed and separated on the outer periphery of the rotating cylinder 18. The treated coolant that has flowed out of the magnetic separator 11 flows into the circular vortex coolant tank 14 from the tangential direction along the inner wall 22 of the circular vortex coolant tank 14.
In addition, chips of magnetic material mainly adsorbed on the outer periphery of the rotating cylinder 18 are pressed and dehydrated by the squeezing roller 23, scraped off by the scraper 24, and discharged into the receiving box 25.

  The circular vortex coolant tank 14 is provided with a jet pump 12 at the center thereof, and a part of the coolant in the center of the circular vortex coolant tank 14 pumped up by the jet pump 12 is passed through the nozzle 26 to the circular vortex coolant tank 1. 4 is ejected in the tangential direction.

Sludge such as residual chips in the coolant that could not be removed by the magnetic separator 11,
The rotational force of the coolant in the circular vortex coolant tank 14 by the coolant that has flowed from the magnetic separator 11 along the inner wall 22 of the circular vortex coolant tank 14 from the tangential direction into the circular vortex coolant tank 14;
The coolant in the circular vortex coolant tank 14 generated by jetting a part of the coolant in the center of the circular vortex coolant tank 14 pumped up by the jet pump 12 in the tangential direction in the circular vortex coolant tank 14 through the nozzle 26. Due to the vortex 13 generated by the two rotatory forces, the vortex 13 continues to settle while rotating with the coolant and accumulates in the center of the bottom 27 of the circular vortex coolant tank 14.

Sludge such as residual chips in the coolant accumulated in the central portion of the bottom surface 27 of the circular vortex coolant tank 14 and not removed by the magnetic separator 11 is pumped together with the coolant by the jet pump 12 and pumped to the magnetic separator 11. Then, reprocessing by the magnetic separator 11 is performed.
A part of the coolant in the circular vortex coolant tank 14 pumped up by the jet pump 12 is branched by the T-shaped pipe 29 in the middle of the discharge piping section 28, and the circular eddy current coolant is passed through the nozzle 26 as described above. The vortex 13 is generated in the coolant in the circular vortex coolant tank 14 by being ejected in the tangential direction in the tank 14.

FIG. 3 is a cross-sectional view showing an example of the jet pump 12.
The jet pump 12 includes a main body part 30, a nozzle part 31, and a diffuser part 32.

One end of the main body 30 is provided with a coolant supply port 33, and the coolant supply port 33 is provided with a screw portion 34.
Further, the main body portion 30 is provided with a nozzle portion 31 communicating with the coolant supply port 33 and a diffuser portion 32 communicating with the nozzle portion 31 via the chamber 35, and pressurized through the coolant supply port 33. By discharging the coolant from the nozzle portion 31 toward the diffuser portion 32, a negative pressure can be generated on the coolant suction port 36 side communicating with the chamber 35.

  Therefore, the coolant containing sludge such as residual chips accumulated in the center of the circular vortex coolant tank 14 by the pipe 37 screwed into the coolant suction port 36 enters the jet pump 12 via the pipe 37. And the coolant introduced from the coolant supply port 33 and ejected from the nozzle portion 31 toward the diffuser portion 32 and discharged from the diffuser portion 32 to the outside of the jet pump 12.

A clean pump for feeding the coolant on the outer peripheral surface 39 of the circular vortex coolant tank 14, which has the highest cleanliness of the coolant in the circular vortex coolant tank 14, to a part of the outer wall 38 of the circular vortex coolant tank 14. 15 and a clean tank 17 having a bed cleaning pump 16 are provided, and the circular vortex coolant tank 14 and the clean tank 17 are connected to each other by a notch hole 40 having an underflow structure.
A T-shaped pipe 42 is provided in the middle of the discharge pipe 41 of the bed cleaning pump 16, and a part of the coolant discharged from the bed cleaning pump 16 passes through the pipe 43 as described above. 12 is supplied to the coolant supply port 33, and is ejected from the nozzle portion 31 of the jet pump 12 toward the diffuser portion 32.
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 modified as appropriate without departing from the scope of the invention.

The invention's effect

According to the coolant cleaning apparatus according to claim 1,
Compared with the conventional coolant cleaning device, the power consumption can be reduced by about 20% by changing the circulation pump from the electric spiral pump to the jet pump, etc. Wiring time can be shortened.
In addition, since the maintenance zone on the coolant tank can be widened, maintenance is facilitated.
Therefore, a novel coolant cleaning device can be provided as compared with the prior art.

It is front sectional explanatory drawing which shows an example of the coolant cleaning apparatus of this invention. It is plane explanatory drawing which shows an example of the coolant cleaning apparatus of this invention. It is front sectional explanatory drawing which shows an example of a jet pump.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... Magnetic separator 12 ... Jet pump 13 ... Eddy current 14 ... Circular eddy current coolant tank 15 ... Clean pump 16 ... Bed washing pump 17 ... Clean tank 18 ... Rotating cylinder 19 ... Electric motor 20 ... Bottom plate 21 ... Flow path 22 ... Inner wall 23 ... Squeezing roller 24 ... Scrap plate 25 ... Receptacle box 26 ... Nozzle 27 ... Bottom surface 28 ... Discharge piping 29 ... T-shaped piping 30 ... Main body 31 ... Nozzle part 32 ... Diffuser part 33 ... Coolant supply port 34 ... Screw part 35 ... Chamber 36 ... Coolant suction port 37 ... Piping 38 ... Outer wall 39 ... Outer peripheral surface 40 ... Notch hole 41 ... Discharge piping 42 ... T-shaped piping 43 ... Piping

Claims (1)

A magnetic separator mainly for removing the magnetic chips from the coolant containing sludge such as magnetic chips, which is mainly discharged from the machine tool;
A circular vortex coolant tank for storing the coolant flowing out of the magnetic separator and generating a vortex in the coolant;
A jet pump, which is accumulated in the center of the circular vortex coolant tank by the vortex, and sucks the residual sludge in the coolant flowing out from the magnetic separator together with the coolant;
A coolant cleaning apparatus comprising a clean tank provided with at least one coolant pump for pumping the coolant filtered in the circular vortex coolant tank to the machine tool.

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