JP2002154031A - Coolant cleaning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coolant cleaning device for eliminating chips or abrasive grains accumulated at the bottom of a coolant tank. SOLUTION: Remaining chips or abrasive grains in a coolant accumulated on the center part bottom face 33 of a circular coolant tank 14 by vortex 27 generated in the circular coolant tank 14 are sucked together with the coolant from a coolant outflow port 29 via a trough 30 by a coolant pump 12 for circulating the coolant, to clean the coolant by a magnetic separator 11 and an abrasive grain collecting device 32. In this constitution, the coolant outflow port 29 provided at the center bottom face 33 of the circular coolant tank 14 is provided with a coolant outflow port plate 32 that can change the open area of the coolant outflow port 29 provided at the center bottom face 33 of the circular coolant tank 14, in order to generate the optimum vortex 27 in the circular coolant tank 14 according to the pumping discharge of the coolant pump 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
Also called a processing mother machine. The present invention relates to a coolant purifying apparatus for purifying coolant by separating chips and the like from a coolant mainly containing chips and the like flowing out of (1).

[0002]

2. Description of the Related Art In the industry, in order to improve the recyclability, when a coolant containing a coolant tank is processed by a coolant containing a chip or abrasive particles flowing out of a processing mother machine. There is a demand for a coolant cleaning apparatus that does not store chips or abrasive grains at the bottom of the coolant tank. FIG. 3 shows a magnetic separator and the processing of the coolant containing the remaining chips of the magnetic material in the case where the coolant flowing out of the processing mother machine contains the chips of the magnetic material. It is explanatory drawing which shows the front of the coolant cleaning apparatus described in Japanese Patent Application No. 2000-338331 which the present inventor combined the circular coolant tank which performs by making a vortex generate | occur | produce a coolant.

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. Then, the coolant is processed, and the processed coolant flows out of the magnetic separator 11 and flows into the circular coolant tank 14 from the tangential direction of the circular coolant tank 14 along the inner wall of the circular coolant tank 14. The magnetic chips in the coolant collected by the magnetic separator 11 are discharged into the receiving box 21. The coolant in the circular coolant tank 14 flows out of the magnetic separator 11 and flows along the inner wall of the circular coolant tank 14 from a tangential direction of the circular coolant tank 14,
A part of the coolant discharged from the coolant pump 12 installed in the pump chamber 28 is
The vortex 27 is generated by the coolant that is ejected into the circular coolant tank 14 from the fifth coolant tank 5. Fine residual chips and the like in the coolant that could not be collected by the magnetic separator 11 continue to settle while rotating together with the coolant due to the vortex 27, and the circular coolant tank 14
Is accumulated on the bottom surface 33 of the central portion of the. Round coolant tank 1
4 is provided with a coolant outlet 29 at the center bottom surface 33, and fine residual chips accumulated on the center bottom surface 33 of the circular coolant tank 14 are removed from the coolant outlet 29.
Then, the coolant is sucked together with the coolant by the coolant pump 12 provided on the pump chamber 28 joined by the gutter 30, is again pressure-fed to the magnetic separator 11, and is reprocessed. This is repeated to clean the coolant. . Circular coolant tank 14 from coolant discharge nozzle 25
The strength of the vortex 27 can be adjusted by adjusting the flow rate of the coolant jetted into the inside. A part of the outer wall of the circular coolant tank 14 is
4 is provided with a clean tank 22 provided with a coolant pump 13 for pumping the cleaned coolant into the processing mother machine, and a circular coolant tank 14 and a clean tank 22 are provided.
Is communicated with the cutout hole 31 of the underflow structure.

[0004] When the working mother machine contains abrasive grains and the like together with the chips of the magnetic material in the coolant discharged from the working mother machine like a grinder, the vortex in the circular coolant tank is given. Abrasive particles in the coolant accumulated in the center of the circular coolant tank,
Alternatively, the residual chips of the magnetic substance are sucked from a coolant outlet provided on a bottom surface of a center portion of the circular coolant tank by a coolant pump installed on a pump chamber connected to the coolant outlet by a gutter. After flowing the coolant together with the coolant and sending it to the abrasive grain collecting device with a built-in filter, etc., and processing the abrasive grains, the coolant is sent again into the magnetic separator to reprocess the remaining chips, and this circulation is repeated to remove the coolant. Perform cleaning. (Not shown)

[0005]

SUMMARY OF THE INVENTION Claim 1 according to the present invention
Compared with the above method, the amount of chips or abrasive particles accumulated at the bottom of the coolant tank can be extremely reduced. An object of the present invention is to provide a coolant cleaning apparatus employing a simple system.

[0006]

According to a first aspect of the present invention, there is provided a coolant cleaning apparatus for generating a vortex in a coolant mainly containing chips and the like which is discharged from a processing mother machine and stored in a tank. A coolant tank, an outlet for discharging coolant containing chips and the like in the circular coolant tank from the center bottom surface of the circular coolant tank, and a coolant circulation for sucking coolant flowing out from the outlet. A coolant chamber having a coolant pump, and a coolant purifying apparatus having a gutter for connecting a coolant between the outlet and the pump chamber so that the coolant can flow therethrough, according to a pumping flow rate of the coolant pump for coolant circulation. The opening area of the coolant outlet provided on the bottom of the center of the circular coolant tank can be changed. It is an.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A coolant cleaning apparatus according to the present embodiment is a coolant cleaning apparatus for processing 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 chips that have flowed out of the processing mother machine or coolant that contains abrasives. No coolant cleaning equipment is desired. 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 the technology described in Japanese Patent Application No. 2000-338331 of the present inventor. A coolant cleaning device according to the present embodiment in the case where 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.

In a case where the chips contained in the coolant flowing out of the processing mother machine are magnetic materials, the coolant cleaning apparatus according to the present embodiment is provided with a magnetic separator 11, a coolant pump 12 for circulating coolant, and a processing unit. It is constituted by a circular coolant tank 14 having two coolant pumps, such as a coolant pump 13 for pumping coolant to the processing mother machine.

The coolant containing magnetic chips and the like flowing out of the processing mother machine is first flowed into the magnetic separator 11 to process the magnetic chips in the coolant. The magnetic separator 11 rotates a rotating cylinder 15 having a fixed magnet built in a non-magnetic rotating cylinder by an electric motor 16, and a flow path in which a predetermined gap is formed between the rotating cylinder 15 and a semi-cylindrical bottom plate 17. The processing is performed by passing a coolant containing chips of a magnetic material through the inside 18 and adsorbing and separating sludge of the magnetic material in the coolant 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 to be dehydrated, scraped off by the scraping plate 20, and discharged into the receiving box 21.

A pump chamber 28 provided on the outer wall of the circular coolant tank 14 is provided with a coolant pump 12 for circulating coolant, and a clean tank 22 provided on the outer wall of the circular coolant tank 14 is also cleaned. A coolant pump 13 is provided for pumping the coolant to the working mother machine. The pump chamber 28 provided with the coolant pump 12 for circulating the coolant is joined by a gutter 30 to a coolant outlet 29 provided at a lower part 33 of the center of the circular coolant tank 14 at a lower part of the pump chamber 28. The coolant pump 12 for coolant circulation provided in the pump chamber 28 pumps up the coolant in the pump chamber 28. Coolant pump 12 for coolant circulation
However, by pumping the coolant in the pump chamber 28, the coolant in the circular coolant tank 14 flows from the coolant outlet 29 into the pump chamber 28 via the gutter 30, and the pump from the coolant outlet 29 in the gutter 30. The flow of the coolant into the chamber 28 becomes a suction force for sucking the coolant in the circular coolant tank 14 to the outside of the circular coolant tank 14, and the liquid in the circular coolant tank 14 flows from the coolant outlet 29 on the bottom surface 33 of the center of the circular coolant tank 14. A left-handed vortex 27 is generated in the northern hemisphere over the top surface, and the remaining chips in the coolant that could not be collected by the magnetic separator 11 are rotated together with the coolant by the left-handed vortex 27 in the circular coolant tank 14. While gradually sinking,
It is collected on the bottom 33 at the center of the circular coolant tank 14.

It is described in Japanese Patent Application No. 2000-338331 that there is a large correlation between the opening area of the coolant outlet 29 and the pumping flow rate of the coolant pump 12 in order to generate the vortex 27 described above. The relationship between the opening area of the coolant outlet 29 and the pumping flow rate of the coolant pump 12 for generating the vortex 27 described above is also described in Japanese Patent Application No. 2000-338331. (Table 1
reference) From the above results, in order to always obtain the optimal opening area of the coolant outlet 29 for generating the vortex 27 with respect to the pumping flow rate of the coolant pump 12, an appropriate coolant outlet hole for the pumping flow rate of the coolant pump 12 By selecting the coolant outlet plate 32 according to the diameter and appropriately mounting the coolant outlet plate 29 on the coolant outlet plate 29,
An optimum vortex 27 according to the conditions at that time can be generated.

Due to the vortex 27 generated in the circular coolant tank 14, the residual chips in the coolant that cannot be collected by the magnetic separator 11 and are collected on the central bottom surface 33 of the circular coolant tank 14 are circular. Coolant pump for coolant circulation, which is fed from a coolant outlet 29 provided in a central bottom surface 33 of the coolant tank 14 to a pump chamber 28 joined to the coolant outlet 29 by a gutter 30 and provided in the pump chamber 28 The refrigerant is sucked together with the coolant in the circular coolant tank 14 by 12 and sent to the magnetic separator 11 again, and this circulation is repeated.

[0013] A part of the coolant is supplied to the inside of the circular coolant tank 14 through a coolant discharge nozzle 25 provided in the tangential direction of the circular coolant tank 14 by a T-shaped connecting pipe 24 provided in the middle of the discharge pipe 23 of the coolant pump 12. The coolant that has been jetted out of the magnetic separator 11 or the coolant that has been ejected to the circular coolant tank 14
The vortex 27 is amplified by the coolant flowing tangentially along the inner wall of the vortex, and the effect of the vortex 27 is increased. The flow rate of the coolant ejected from the coolant discharge nozzle 25 can be adjusted by the adjustment valve 26.

In a case where the working mother machine contains abrasive grains and the like together with the chips of the magnetic material in the coolant flowing out of the working mother machine like a grinding machine, the coolant cleaning apparatus according to the present embodiment includes a magnetic separator and a magnetic separator. , A coolant collection pump, a coolant pump for coolant circulation, and a coolant coolant pump having two coolant pumps for sending the processed coolant to a processing mother machine such as a grinder. The working mother machine described above, except that the coolant sucked by the coolant pump is sent to the abrasive grain collecting device, and the coolant treated with the abrasive particles flowing out of the abrasive grain collecting device is sent again into the magnetic separator. Configuration substantially the same as the coolant cleaning apparatus according to the present embodiment when the chips contained in the coolant flowing out of the magnetic material are magnetic substances More performs cleaning of the coolant. (Not shown)

[0015] When the chips contained in the coolant flowing out of the processing mother machine are magnetic substances, and when the processing mother machine is a grinding machine, the abrasives and the like together with the chips of the magnetic substances are contained in the coolant flowing out of the processing mother machine. In both cases, a coolant pump 13 for feeding 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 machining base machine is provided on a part of the outer wall of the circular coolant tank 14. A clean tank 22 is provided, and a circular coolant tank 14 and a clean tank 22 are provided.
Is communicated with the cutout hole 31 of the underflow structure.

In this embodiment, the chips contained in the coolant flowing out of the processing mother machine are magnetic substances, and the chips of the magnetic substance are contained in the coolant flowing out of the processing mother machine like a grinding machine. A description has been given of a case where abrasive particles and the like are contained together. However, by replacing the magnetic separator 11 in the present embodiment with a filter device or the like, chips that have flowed out together with the coolant from the processing mother machine are also non-magnetic materials Can respond. In addition, as described above, the present invention is not limited to the embodiment described above and shown in the drawings, but can be appropriately modified without departing from the gist.

[0017]

According to the first aspect of the present invention, a coolant outlet plate is provided on the bottom surface of the central portion of the circular coolant tank so that the opening area of the coolant outlet can be changed according to the pumping flow rate of the coolant pump for circulating the coolant. According to the coolant cleaning device, the vortex generated naturally in the coolant in the circular coolant tank and the vortex generated artificially are combined, so that the vortex can be efficiently generated in the coolant in the circular coolant tank. The chips contained therein can be efficiently accumulated on the center bottom surface of the circular coolant tank, and the accumulated residual chips and the like are sucked together with the coolant from the coolant outlet provided on the center bottom surface of the circular coolant tank by the coolant pump. By comparing with the conventional coolant cleaning device, It can provide a novel coolant cleaning device not accumulated debris cut into the bottom of the over-Holland 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 enlarged view of a coolant outlet of the present invention.

FIG. 3 is an explanatory view showing the front of a conventional coolant cleaning device.

[Description of Signs] 11 ... Magnetic separator 12 ... Coolant pump (for coolant circulation) 13 ... Coolant pump 14 ... Circular coolant tank (for clean coolant pressure feeding) 15 ... Rotating cylinder 16 ..Electric motor 17 ・ ・ ・ Bottom plate 18 ・ ・ ・ Flow path 19 ・ ・ ・ Squeeze roller 20 ・ ・ ・ Scraper plate 21 ・ ・ ・ Receiving box 22 ・ ・ ・ Clean tank 23 ・ ・ ・ Discharge pipe 24 ・ ・ ・ T-shaped Connection pipe 25 ... Coolant discharge nozzle 26 ... Adjustment valve 27 ... Swirl 28 ... Pump chamber 29 ... Coolant outlet 30 ... Gutter 31 ... Cut hole 32 ... Coolant Outlet plate 33 ・ ・ ・ Bottom

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Hiroto Kamei 28 Nodacho, Nodacho, Kariya-shi, Aichi F-term in Shienkei Inc. (reference) 3C011 BB33 BB34 3C047 GG13 GG17 GG18

Claims (1)

[Claims] 1. A circular coolant tank for generating a vortex in a coolant stored in a tank and mainly containing chips and the like flowing out of a machine tool, etc., and a central bottom surface of the circular coolant tank An outlet for letting out coolant containing chips and the like in the circular coolant tank, a pump chamber provided with a coolant pump for sucking the coolant flowing out from the outlet, and the outlet And a pump purifier having a gutter for connecting a coolant so that a coolant can flow therethrough, wherein an opening area of the outlet can be changed according to a pumping flow rate of the coolant pump. apparatus.