JP2005288681A - Coolant cleaning device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a coolant cleansing device for preventing chips from being accumulated at a bottom of a coolant tank at the time of treating the coolant containing the chips flowing out of a working machine. <P>SOLUTION: To make a coolant flowing from a magnetic separator 11 flow in a circular coolant tank 14, a pipe diameter of a coolant inflow pipe 32 is decided according to a treatment capacity of the magnetic separator 11 (a capacity of the coolant flown from the magnetic separator 11 in the circular coolant tank 14), to generate an optimum vortex 27 according to the condition, and accumulate and separate fine chips on the bottom face at a center part. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a coolant cleaning apparatus that cleans coolant by separating chips from a coolant containing chips and the like flowing out from a machine tool for cutting or grinding.

  In order to improve recyclability, the industry demands a coolant cleaning device that does not collect chips at the bottom of the coolant tank when processing coolant containing chips that have flowed out of machine tools, etc. ing.

  Therefore, conventionally, the magnetic material contained in the coolant flowing out from the machine tool or the like is removed by the magnetic separator, and the coolant from which the magnetic material flowing out from the magnetic separator has been removed is removed from the bottomed cylinder. By flowing into the circular coolant tank from the tangential direction along the inner wall of the circular coolant tank, and generating eddy currents in the circular coolant tank, fine chips that could not be removed by the magnetic separator are circular. There has been a coolant cleaning device that cleans the coolant that has flowed out of a machine tool or the like by accumulating on the bottom surface of the center portion in the coolant tank.

  According to a first aspect of the present invention, there is provided a coolant cleaning device adopting a novel method for effectively generating a vortex flow in a circular coolant tank in order to eliminate chips and the like accumulated at the bottom of the coolant tank. Is an issue.

In order to achieve the above object, an invention according to claim 1 of the present invention includes a magnetic separator for removing magnetic chips contained in a coolant discharged from a machine tool or the like,
A circular coolant tank with a bottomed cylindrical shape for generating a vortex in the coolant stored in the coolant tank;
A coolant inflow pipe for allowing the coolant flowing out of the magnetic separator to flow into the circular coolant tank from the tangential direction along the inner wall of the circular coolant tank;
A coolant pump for circulating coolant for sending coolant containing residual chips in the circular coolant tank to the magnetic separator again;
A clean tank provided on the outer wall of the circular coolant tank and connected so that the coolant flows through the circular coolant tank;
A coolant purifier equipped with a clean pump on the clean tank for sucking the purified coolant in the clean tank from the clean tank and sending it to a machine tool, etc.
Depending on the processing capacity of the magnetic separator (coolant capacity flowing from the magnetic separator into the circular coolant tank), the pipe diameter of the coolant inflow pipe for allowing the coolant to flow from the magnetic separator to the circular coolant tank,
The pipe diameter of the coolant inflow pipe to the circular coolant tank is 2 inches for the processing capacity of the magnetic separator less than 60 L / min, and the coolant inflow pipe to the circular coolant tank for the processing capacity of the magnetic separator of 60 L / min to less than 120 L / min The pipe diameter of the coolant inflow pipe to the circular coolant tank is 3 in, the processing capacity of the magnetic separator is 240 L / min to 360 L / min. The pipe diameter of the coolant inflow pipe to the circular coolant tank is 4in for less than mjn, and the pipe diameter of the coolant inflow pipe to the circular coolant tank is 5in for the processing capacity of 360L / min to less than 500L / min of the magnetic separator. Characterized by A.

  In the coolant cleaning apparatus for processing magnetic chips contained in the coolant that has flowed out of the machine tool or the like according to claim 1, the optimum vortex flow that is generated in the coolant in the circular coolant tank and that is suitable for the coolant processing capacity By efficiently collecting the chips contained in the coolant on the bottom surface of the center portion of the circular coolant tank, and sucking the accumulated residual chips of the magnetic material together with the coolant from the bottom surface of the circular coolant tank by the coolant pump, Compared with the conventional coolant cleaning device, a novel coolant cleaning device that does not accumulate chips at the bottom of the coolant tank can be provided.

  In addition to the above effects, there are other effects such as reducing the frequency of cleaning in the coolant tank, preventing coolant from decay, and reducing running costs. By extending the length, it is possible to maintain the performance of machine tools and the like, and to contribute to a reduction in operating costs as a whole.

Best Mode for Carrying Out the Invention

The coolant cleaning apparatus according to the present embodiment is a coolant cleaning apparatus that performs processing of coolant containing chips and the like that have flowed out of a machine tool or the like.
The coolant cleaning apparatus according to the present embodiment requires a coolant cleaning apparatus that does not collect chips at the bottom of the coolant tank when processing coolant containing chips discharged from a machine tool or the like. Has been.

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 apparatus according to this embodiment in the case where the chips contained in the coolant flowing out from a machine tool or the like is a magnetic material will be described with reference to FIGS. 1 and 2.

  In the case where the chips contained in the coolant that has flowed out of a machine tool or the like 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 coolant. The coolant pump 13 is a circular coolant tank 14 having two coolant pumps, such as a coolant pump 13 for pressure feeding to a machine tool or the like.

  The coolant containing the magnetic chips discharged from the machine tool or the like is first introduced into the magnetic separator 11 to process the magnetic chips in the coolant.

The magnetic separator 11 is a flow path in which a rotating cylinder 15 containing a fixed magnet in a nonmagnetic rotating cylinder is rotated by an electric motor 16, and a space between the rotating cylinder 15 and a semicylindrical bottom plate 17 is formed with a predetermined gap. A coolant containing magnetic chips is passed through 18, and the sludge of the magnetic material in the coolant is adsorbed and separated on the outer periphery of the rotating cylinder 15. The treated coolant that has flowed out of the magnetic separator 11 flows into the circular coolant tank 14 from the tangential direction along the inner wall of the circular coolant tank 14.
The magnetic sludge adsorbed on the outer periphery of the rotating cylinder 15 is pressed by the squeezing roller 19 and dehydrated, scraped off by the scraping plate 20, and discharged into the receiving box 21.

  In the pump chamber 28 installed on the outer wall of the circular coolant tank 14, the coolant pump 12 for circulating the coolant is used. Similarly, in the clean tank 22 installed on the outer wall of the circular coolant tank 14, the cleaned coolant is supplied. A coolant pump 13 is provided to pump the machine tool.

  The pump chamber 28 provided with the coolant pump 12 for circulating the coolant is connected to the pump chamber 28 with a coolant outlet 29 provided in the center of the circular coolant tank 14 on the lower surface of the pump chamber 28 by a flange 30. The provided coolant pump 12 for circulating coolant pumps up the coolant in the pump chamber 28.

  The coolant pump 12 for circulating the coolant pumps up the coolant in the pump chamber 28, whereby the coolant in the circular coolant tank 14 flows from the coolant outlet 29 into the pump chamber 28 via the rod 30. The coolant flow from the coolant outlet 29 to the pump chamber 28 causes the coolant in the circular coolant tank 14 to be sucked out of the circular coolant tank 14, and the coolant outlet 29 at the center of the bottom plate of the circular coolant tank 14. Left-handed vortex 27 is generated in the northern hemisphere (Coriolis force) from the top of the liquid surface of the circular coolant tank 14 to the liquid surface of the circular coolant tank 14, and the remaining chips in the coolant that could not be collected by the magnetic separator 11 are Coolant by left-handed vortex 27 in tank 14 It continued settling gradually while rotating together, integrated in the center bottom of the circular coolant tank 14.

  The vortex 27 is generated not only by the Coriolis force but also by the coolant that flows out of the magnetic separator 11 and flows into the circular coolant tank 14 from the tangential direction along the inner wall of the circular coolant tank 14. As a result, the vortex 27 is amplified.

In order to effectively generate the vortex 27 by the coolant that has flowed out of the magnetic separator 11 into the circular coolant tank 14, the flow rate (magnetic) of the coolant that flows into the circular coolant tank 14 from the magnetic separator 11. It is considered that there is a large correlation between the processing capacity of the separator 11) and the pipe diameter of the coolant inflow pipe 32 for allowing the coolant to flow into the circular coolant tank 14 from the magnetic separator 11. Shows the flow rate of the coolant flowing into the circular coolant tank 14 from the magnetic separator 11 (the processing capacity of the magnetic separator 11) and the coolant from the magnetic separator 11 for effectively generating the vortex 27 described above. Various experiments were conducted on the relationship of the pipe diameter of the coolant inflow pipe 32 for allowing the coolant to flow into the circular coolant tank 14. Result of repeated 討 to obtain the results shown in Table 1.

  Due to the vortex 27 generated in the circular coolant tank 14, residual chips in the coolant that could not be collected by the magnetic separator 11 are accumulated on the bottom surface of the central portion of the circular coolant tank 14. From the coolant outlet 29 provided on the bottom surface, the coolant is sent to the pump chamber 28 connected by the rod 30, and is sucked together with the coolant of the circular coolant tank 14 by the coolant pump 12 for circulating coolant provided in the pump chamber 28, and again. It is sent to the magnetic separator 11 and this circulation is repeated.

A T-shaped connecting pipe 24 is provided in the middle of the discharge pipe 23 of the coolant pump 12, and a part of the coolant discharged from the coolant pump 12 passes through the T-shaped connecting pipe 24 in the tangential direction of the circular coolant tank 14. It is ejected into the circular coolant tank 14 through the coolant discharge nozzle 25 provided,
The vortex 27 is amplified together with the coolant that flows out from the magnetic separator 11 and flows in the tangential direction along the inner wall of the circular coolant tank 14, and the effect of the vortex 27 is increased.

  Further, the flow rate of the coolant ejected from the coolant discharge nozzle 25 can be adjusted by the adjustment valve 26.

  A part of the outer wall of the circular coolant tank 14 is provided with a clean tank 22 provided with a coolant pump 13 for sending the coolant on the outer peripheral surface of the circular coolant tank 14 having the highest cleanliness in the circular coolant tank 14 to the machine tool. The circular coolant tank 14 and the clean tank 22 communicate with each other through a notch hole 31 having an underflow structure.

  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.

It is explanatory drawing which shows the front of the coolant cleaning apparatus of this invention. It is explanatory drawing which shows the plane of the coolant cleaning apparatus of this invention.

Explanation of symbols

11 ... Magnetic separator 12 ... Coolant pump
(For coolant circulation)
13 ... Coolant pump 14 ... Circular coolant tank (For clean coolant pumping)
DESCRIPTION OF SYMBOLS 15 ... Rotating cylinder 16 ... Electric motor 17 ... Bottom plate 18 ... Flow path 19 ... Diaphragm roller 20 ... Scraping plate 21 ... Receptacle box 22 ... Clean tank 23 ... Discharge piping 24 ... T-shaped piping 25 ... Coolant discharge nozzle 26 ... Adjusting valve 27 ... Vortex 28 ... Pump chamber 29 ... Coolant outlet 30 ... 樋 31 ... Cutting Notch 32 ... Coolant inflow pipe

Claims (1)

A magnetic separator for removing magnetic chips contained in the coolant that has flowed out of the machine tool or the like;
A bottomed cylindrical circular coolant tank for generating a vortex in the coolant stored in the coolant tank;
A coolant inflow pipe for allowing the coolant flowing out from the magnetic separator to flow into the circular coolant tank from the tangential direction along the inner wall of the circular coolant tank;
A coolant pump for circulating the coolant for sending the coolant containing the remaining chips in the circular coolant tank to the magnetic separator again;
A clean tank provided on an outer wall of the circular coolant tank, and connected so that the coolant flows through the circular coolant tank,
A coolant purifier equipped with a clean pump on the clean tank for sucking the purified coolant in the clean tank from the clean tank and sending it to a machine tool or the like,
The pipe diameter of the coolant inflow pipe for allowing the coolant to flow from the magnetic separator to the circular coolant tank is set to the processing capacity of the magnetic separator (the coolant capacity flowing from the magnetic separator to the circular coolant tank). According to
The pipe diameter of the coolant inflow pipe to the circular coolant tank is 2 inches for the processing capacity of the magnetic separator less than 60 L / min, and the circular coolant tank for the processing capacity of the magnetic separator of 60 L / min or more and less than 120 L / min. The pipe diameter of the coolant inflow pipe is 21/2 inches, and the processing capacity of the magnetic separator is 120 L / min or more and less than 240 L / min, and the diameter of the coolant inflow pipe to the circular coolant tank is 3 inches. For the capacity of 240 L / min or more and less than 360 L / min, the pipe diameter of the coolant inflow pipe to the circular coolant tank is 4 inches, and for the processing capacity of the magnetic separator of 360 L / min or more and less than 500 L / min, the coolant to the circular coolant tank Inflow pipe pie Coolant cleaning apparatus, characterized in that the diameter and 5in.

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