KR20210048017A - Waste-oil retreat apparatus - Google Patents

Abstract

The present invention relates to a waste cutting oil reuse device, which comprises: a waste cutting oil tank for receiving and storing waste cutting oil used in a processing machine; a waste cutting oil filtering unit for filtering a metal chip from the waste cutting oil supplied to the waste cutting oil tank; a waste cutting oil pre-processing unit for preferentially filtering out relatively large metal chips contained in the waste cutting oil before the waste cutting oil is filtered through the waste cutting oil filtering unit; and a waste cutting oil diluting unit which adjusts the concentration for reuse of the waste cutting oil stored in the waste cutting oil tank. Unlike the prior art, the present invention preferentially filters out the relatively large metal chips among the metal chips included in a cutting fluid through the waste cutting oil pre-processing unit, and separates the remaining metal chips through the waste cutting oil filtering unit, thereby increasing a filtrating rate of cutting oil.

Description

Waste cutting oil reuse device{WASTE-OIL RETREAT APPARATUS}

The present invention relates to an apparatus for reusing waste cutting oil, and more particularly, a relatively bulky metal chip among metal chips contained in a cutting fluid is first filtered by a waste cutting oil pretreatment unit, and then the remaining metal chips through a waste cutting oil filter unit. By separating, it relates to a reuse apparatus for waste cutting oil to improve the filtration rate of the cutting oil.

In general, cutting oil used for cutting, grinding, or precision polishing processing lines of workpieces contains chips generated during processing, so for reuse, only pure cutting oil is collected and reused after removing foreign substances.

In general, when a workpiece is processed using equipment such as CNC equipment, a machining center or a grinder, which is a machine tool, a large amount of chips (CHIP), chips and grinding sludge (hereinafter referred to as "sludge") are generated. When processing such a cutting material, high heat is generated in the cutting material and the cutting tool due to high-speed processing, which shortens the service life of the cutting tool, and the sludge generated during the cutting process is circulated in a state contained in the cutting oil supplied at the same time as the processing. You will use it in a way that you do.

If such cutting oil is initially supplied, there is no problem, but if it is used for a long time, the sludge contained in the cutting oil is settled down by its own weight and only the remaining cutting oil is circulated for reuse, so the cutting oil flows in the process of circulation. As a result, it circulates in a state containing sludge and acts as a factor that blocks the injection nozzle.

In addition, since the sludge contained in the cutting oil moves together with the cutting oil, the equipment is overloaded, resulting in excessive loss of power, as well as overheating of the cutting material and cutting tools due to poor supply of cutting oil during processing. As a result, the efficiency of processing becomes poor, and on the other hand, a phenomenon such as damage or severe wear of the cutting tool occurs, resulting in a loss of time due to the replacement of the cutting tool as well as a decrease in work efficiency due to the equipment stop There is.

Therefore, in recent years, in order to solve such a problem, a'cutting oil filtering device' has been proposed with Korean Patent Registration No. 387169 and Domestic Patent Registration No. 805248.

The above-described technical configuration is a background technique to aid understanding of the present invention, and does not mean a conventional technique widely known in the art to which the present invention belongs.

Existing coolant filtration devices receive cutting oil containing chips and drop them into a filter to filter the chips. As the chips are concentrated on a specific area of the filter where the coolant falls, the filter passes the cutting oil due to the partial stacking of the chips. The filtering efficiency is degraded due to the unevenness of the chip, and as the cutting oil does not pass through at the partially stacked position of the chip, replacement is required to be cleaned, causing frequent cleaning, and the operation of the coolant filtration device must be stopped for cleaning. Accordingly, there is a problem in that the processing efficiency is extremely deteriorated by having to stop the operation of the facility.

Therefore, there is a need to improve this.

The present invention was conceived to improve the above problems, and after first filtering out a relatively bulky metal chip from the metal chips contained in the cutting fluid in the waste cutting oil pretreatment unit, the remaining metal chips are removed through the waste cutting oil filter unit. By separating, it is an object of the present invention to provide an apparatus for reusing waste cutting oil to improve the filtration rate of cutting oil.

In the present invention, after receiving the waste cutting oil discharged from the processing machine into the waste cutting oil tank, when the concentration of the waste cutting oil exceeds the set value, the dilution solution is automatically supplied by a set amount to dilute the waste cutting oil and supplied to the processing machine. It is an object of the present invention to provide a reuse device for waste cutting oil to enable reuse of the cutting oil in an optimized state.

An apparatus for reusing waste cutting oil according to the present invention includes: a waste cutting oil tank for receiving and storing the waste cutting oil used in a processing machine; A waste cutting oil filter that filters metal chips from the waste cutting oil supplied to the waste cutting oil tank; A waste cutting oil pretreatment unit that preferentially filters out the relatively bulky metal chips contained in the waste cutting oil before the waste cutting oil is filtered through the waste cutting oil filter; And a waste cutting oil dilution unit for adjusting the concentration for reuse of the waste cutting oil stored in the waste cutting oil tank.

The waste cutting oil filtering unit may include at least a pair of guide discs provided to face each other in the waste cutting oil tank; It is inserted into the guide disk, and both sides are rotatably provided in the waste cutting oil tank along the axial direction, so that it is rotated in a circumferential direction with the entire guide disk by external force, and the waste cutting oil and metal chips passing through the waste cutting oil pretreatment unit An inlet pipe having an inlet and an outlet to pass through; At least a pair of upper rollers connected to the waste cutting oil tank in an axial direction so as to be parallel with the inlet pipe, and disposed on both sides of the guide disk while being disposed above the lower circumferential surface of the guide disk; At least a pair of lower rollers having both sides connected to the waste cutting oil tank along an axial direction so as to be parallel with the upper roller, and disposed below the upper roller; A transfer member wound around the upper roller and the lower roller to perform an infinite orbital motion; A filtration filter that is supplied from a filter roll and conveyed through the guide disk and the conveying member, thereby filtering metal chips from the waste cutting oil discharged through the outlet of the inlet pipe; And a shaft support portion rotatably mounted on the filter roll outside the waste cutting oil tank.

An upper shell connected to the waste cutting oil pretreatment unit, the waste cutting oil tank, or a frame extending upwardly to the waste cutting oil tank so as to be reciprocally moved up and down, and having an inlet port for receiving a cutting fluid including metal chips; A lower shell fixedly installed on the waste cutting oil tank or the frame, and inducing discharge of the cutting fluid that has passed through the upper shell to the waste cutting oil filter; And a spread unit that filters the metal chips from the waste cutting oil flowing into the upper shell, and guides the waste cutting oil to move evenly toward the lower shell.

The waste cutting oil dilution unit may include: a waste cutting oil level sensor configured to detect a level of waste cutting oil supplied in the waste cutting oil tank in real time; A concentration detector that is provided in the waste cutting oil tank and detects the concentration of the waste cutting oil supplied; A dilution liquid tank for supplying a dilution liquid to the waste cutting oil tank; And a control unit for supplying and controlling the dilution liquid to the waste cutting oil according to a specific point in time or a concentration detected in real time of the waste cutting oil stored in the waste cutting oil tank so as to adjust the concentration of the waste cutting oil in the waste cutting oil tank.

As described above, the reuse device for waste cutting oil according to the present invention preferentially filters out a relatively bulky metal chip from the metal chips contained in the cutting fluid in the waste cutting oil pretreatment unit, unlike the prior art, and then the waste cutting oil filter unit. By separating the remaining metal chips through, it is possible to improve the filtration rate of the cutting oil.

In the present invention, after receiving the waste cutting oil discharged from the processing machine into the waste cutting oil tank, when the concentration of the waste cutting oil exceeds the set value, the dilution solution is automatically supplied by a set amount to dilute the waste cutting oil and supplied to the processing machine. The coolant used can be reused in an optimized state.

1 is a block diagram of an apparatus for reusing waste cutting oil according to an embodiment of the present invention.
FIG. 2 is a front view of a main part of a waste cutting oil filtration unit among a reuse device for waste cutting oil according to an embodiment of the present invention.
3 is a perspective view of a main part showing a control device of a filtration filter among waste cutting oil filtration units according to an embodiment of the present invention.
FIG. 4 is an enlarged view of a main part of a waste cutting oil pretreatment unit among a reuse device for waste cutting oil according to an embodiment of the present invention.
5 is a plan view of a waste cutting oil pretreatment unit according to an embodiment of the present invention.
6 is a bottom view of a waste cutting oil pretreatment unit according to an embodiment of the present invention.
7 is a cross-sectional view of a waste cutting oil pretreatment unit according to an embodiment of the present invention.
8 and 9 are partially enlarged views of a waste cutting oil dilution part of a reuse device for waste cutting oil according to an embodiment of the present invention.

Hereinafter, an embodiment of an apparatus for reusing waste cutting oil according to the present invention will be described with reference to the accompanying drawings. In this process, the thickness of the lines or the size of components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of users or operators. Therefore, definitions of these terms should be made based on the contents throughout the present specification.

1 is a block diagram of an apparatus for reusing waste cutting oil according to an embodiment of the present invention.

FIG. 2 is a front view of a main part of a waste cutting oil filter part of a reuse device for waste cutting oil according to an embodiment of the present invention, and FIG. 3 is a perspective view of a main part showing a control device of a filter filter among the waste cutting oil filter part according to an embodiment of the present invention. to be.

4 is an enlarged configuration diagram of a main part of a waste cutting oil pretreatment unit among a reuse device for waste cutting oil according to an embodiment of the present invention, FIG. 5 is a plan view of the waste cutting oil pretreatment unit according to an embodiment of the present invention, and FIG. 6 is the present invention It is a bottom view of the waste cutting oil pretreatment unit according to an embodiment of, and FIG. 7 is a cross-sectional view of the waste cutting oil pretreatment unit according to an embodiment of the present invention.

8 and 9 are partially enlarged views of a waste cutting oil dilution part of a reuse device for waste cutting oil according to an embodiment of the present invention.

1 to 9, a waste cutting oil reuse device 100 according to an embodiment of the present invention includes a waste cutting oil tank 110, a waste cutting oil filter 200, a waste cutting oil pretreatment unit 300, and a waste It includes a cutting oil dilution unit 400.

The waste cutting oil tank 110 receives and stores the waste cutting oil used in the processing machine 10, and may have an outlet port 111 that regulates the discharge and transport of the waste cutting oil.

In particular, the processing machine 10 serves to receive and store the waste cutting oil recovered (discharged) after use in the processing machine 10 such as a cutting machine, a milling machine, and an NC lathe.

At this time, the processing machine 10 extends the discharge pipe 20, and the discharge pipe 20 is connected to the waste cutting oil tank 110. Thus, the waste cutting oil of the processing machine 10 is continuously or discontinuously transferred to the waste cutting oil tank 110 through the discharge pipe 20.

Further, the outlet port 111 is provided under the waste cutting oil tank 110 and serves to allow the waste cutting oil to be intermittently discharged.

In addition, the waste cutting oil filtering unit 200 serves to filter metal chips from the waste cutting oil supplied to the waste cutting oil tank 110.

In addition, the waste cutting oil pretreatment unit 300 serves to preferentially filter the relatively bulky metal chips contained in the waste cutting oil before the waste cutting oil is filtered through the waste cutting oil filtration unit 200.

The waste cutting oil dilution unit 400 serves to adjust the concentration for reuse of the waste cutting oil stored in the waste cutting oil tank 110. The waste cutting oil whose concentration is adjusted to be reused by the waste cutting oil dilution unit 400 is recycled to the processing machine 10.

On the other hand, the waste cutting oil filtering unit 200 includes a guide disk 210, an inlet pipe 220, an upper roller 230, a lower roller 240, a transfer member 250, a filtration filter 262, and a shaft support 270. ).

In particular, the guide disk 210 is provided with at least one pair so as to face each other inside the waste cutting oil tank (110). For convenience, a pair of guide disks 210 are provided inside the waste cutting oil tank 110 and are arranged side by side so as to face each other. Of course, the guide disk 210 is not limited to the material, diameter, and number.

In addition, the inlet pipe 220 is inserted into the center of each of the guide disk 210, and both sides are rotatably provided in the waste cutting oil tank 110 along the axial direction. Thus, the inlet pipe 220 is rotated in the circumferential direction together with the entire guide disk 210 by an external force.

In addition, the inlet pipe 220 has an inlet port 222 and an outlet port 224 to pass the waste cutting oil passing through the waste cutting oil pretreatment unit 300 and the metal chips having a relatively (relatively) small volume.

In particular, it is assumed that the inlet 222 is formed on either side of both sides in the axial direction of the inlet pipe 220. In addition, the outlet 224 is formed on the circumferential surface of the inlet pipe 220. Of course, the outlet 224 may be formed at various locations on the circumferential surface of the inlet pipe 220, and one or more may be formed.

The upper roller 230 is connected to the waste cutting oil tank 110 on both sides along the axial direction so as to be parallel with the inlet pipe 220, and is disposed above the lower circumferential surface of the guide disc 210. It consists of at least one pair provided on both sides. At this time, it is assumed that the upper roller 230 is provided with a pair.

The lower rollers 240 are connected to the waste cutting oil tank 110 at both sides along the axial direction so as to be parallel with the upper rollers 230, and consist of at least one pair disposed below the upper rollers 230. At this time, it is assumed that a pair of lower rollers 240 are provided.

In addition, the transfer member 250 is wound around a pair of upper rollers 230 and a pair of lower rollers 240 to perform a caterpillar motion. At this time, it is assumed that the transfer member 250 is a chain of one or more pairs in parallel. Of course, the transfer member 250 can be applied in various ways.

In addition, the filter filter 262 is supplied from a filter roll 260 rotatably provided outside of the waste cutting oil tank 110, and is transferred through the guide disk 210 and the transfer member 250, so that the inlet pipe It serves to filter the metal chips from the waste cutting oil discharged through the outlet 224 of (220). At this time, the filtration filter 262 can be applied with various materials such as textile, paper, and mesh.

At this time, the filter filter 262 may be forcibly transferred by forcibly rotating any one upper roller 230 or one lower roller 240 by a power source. In this case, the filter roll 260 is naturally rotated and the filter filter 262 is released and supplied.

Alternatively, as the roller shaft 264 of the filter roll 260 is forcibly rotated by a driving source, the filter filter 262 may be forcibly transferred. In this case, the upper roller 230 and the lower roller 240 are rotated naturally.

Meanwhile, the shaft support part 270 serves to stably supply and guide the filter filter 262 by rotatably mounting the filter roll 260 on the outside of the waste cutting oil tank 110.

In detail, the inlet pipe 220 is provided with a diaphragm 225 inside the hollow. The inlet pipe 220 is bisected along the axial direction by the diaphragm 225. It is bisected by the diaphragm 225 and the rotation shaft 226 is rotatably connected to a space where there is no waste cutting oil. And, the rotation shaft 226 is provided with a plotter 227. The plotter 227 is connected to the rotation shaft 226 so as to be located under the inlet pipe 220.

In particular, the proximity lever 228 is installed on the rotation shaft 226 located inside the inlet pipe 220 so as to protrude to one end of the inlet pipe 220, and is close to a part of the rotation section of the proximity lever 228 The sensor 229 is fixedly installed in the waste cutting oil tank 110.

In addition, the filtration filter 262 is inserted between the guide disk 210 and the transfer member 250 at one side of the waste cutting oil tank 110 and is then drawn out to the other side of the waste cutting oil tank 110. At this time, the filter filter 262 forms a convex curved surface in a downward direction by pressing the guide disk 210. Of course, the transfer member 250 also forms a convex trajectory in a downward direction by pressing of the guide disk 210.

In this way, while the filtration filter 262 is mounted, the metal chips are filtered by the filtration filter 262 while the waste cutting oil containing metal chips flows into the waste cutting oil tank 110 through the inlet pipe 220. .

In addition, as the metal chips accumulate in the filtration filter 262, the level of the waste cutting oil above the filtration filter 262 in the waste cutting oil tank 110 gradually increases.

The plotter 227 rises according to the level of the waste cutting oil, and the rotation shaft 226 to which the plotter 227 is fixed is also rotated. Accordingly, the proximity lever 228 fixedly installed on the rotation shaft 226 rotates in the opposite direction to the plotter 227. A proximity sensor 229 is installed on the rotational trajectory of the end of the proximity lever 228, and the exact installation position of the proximity sensor 229 is a place where the waste cutting oil should not rise to the water level any more. That is, the proximity sensor 229 is installed at the position of the proximity lever 228 determined by the position of the plotter 227 at the level of the waste cutting oil that should not be raised any more.

Accordingly, the proximity lever 228 continuously rotates downward due to the continuous upward rotation of the plotter 227, and the proximity lever 228 meets the proximity sensor 229 at the maximum level of the waste cutting oil.

In addition, the shaft support portion 270 includes a pair of shaft support plates 272 vertically formed with a guide groove 274 through which the roller shaft 264 of the filter roll 260 can fall by its own weight, and the guide groove It includes an anti-loosening roller 276 in the lower part of 274.

Accordingly, the filter roll 260 always operates in a state in which the filter filter 262 on the lower circumferential surface is in contact with the loosening prevention roller 276 by gravity in a downward direction.

That is, under the control of the proximity sensor 229, when the filter filter 262 is transferred, the filter roll 260 is passively rotated to release the filter filter 262. And, after the filtration filter 262 is transferred a certain distance, it is stopped. As a result, arbitrary loosening of the filtration filter 262 is prevented, so that the filtration filter 262 always maintains a constant tension, the movement of the filtration filter 262 or between the guide disk 210 and the transfer member 250 You will be able to enter the location.

Meanwhile, the waste cutting oil pretreatment unit 300 includes an upper shell 310, a lower shell 320, and a spread unit 330.

The upper shell 310 is connected to the waste cutting oil tank 110 or the frame 112 extending to the upper portion of the waste cutting oil tank 110 so as to be reciprocally moved up and down. In particular, the frame 112 has one or more operating members 312 to be linearly reciprocated back and forth, and the upper shell 310 is connected to the operating member 312 to linearly reciprocate.

At this time, the upper shell 310 is mold-closed while descending toward the lower shell 320 to prevent the supplied waste cutting oil and metal chips from splashing or leaking outward. In addition, the upper shell 310 is mold-opened while rising in a direction opposite to the lower shell 320 so that the inner side of the lower shell 320 can be cleaned.

In particular, the upper shell 310 forms an inlet port 314 so that waste cutting oil including metal chips can be supplied. At this time, the inlet port 314 extends to protrude to the outside of the frame 112 or the waste cutting oil tank 110, and is not limited to the number and shape.

In addition, the lower shell 320 is provided under the upper shell 310. At this time, the lower shell 320 and the upper shell 310 are formed to be open in a direction facing each other. In particular, the lower shell 320 serves to guide the flow toward the filtration filter 262 by preventing the waste cutting oil discharged from the upper shell 310 from spreading or scattering.

On the other hand, the spread unit 330 serves to evenly drop metal chips and waste cutting oil flowing into the inlet port 314 of the upper shell 310 from the outside to the lower shell 320 located under the upper shell 310 Do it. Through this, the waste cutting oil evenly dropped across the lower shell 320 is stably and uniformly dropped on the filtration filter 262 in general.

Here, the spread unit 330 includes a distribution line 332 and a mesh network member 334.

The distribution line 332 is formed to diverge from the inside of the upper shell 310 to the inlet port 314 while being connected to the inlet port 314 from the inside of the upper shell 310, and is formed to diverge in the direction of the divergence, and the discharge port 333 along the branched axial direction. ) Is formed to be spaced at set intervals to guide the discharge of metal chips and waste cutting oil to the filtration filter 262 over a wide range.

At this time, the distribution line 332 can be deformed into various shapes. In addition, the distribution line 332 is fixed to the inside of the upper shell 310 in various ways such as bolting.

In addition, the mesh net member 334 is disposed under the distribution line 332 inside the upper shell 310 to spread the metal chips and waste cutting oil discharged from the distribution line 332 more evenly on the filtration filter 262. It plays the role of inducing the fall. In particular, the mesh mesh member 334 serves to filter out metal chips having relatively large particles contained in the waste cutting oil. Of course, the mesh net member 334 is not limited to the size and number of mesh holes.

When the mesh net member 334 is fixed to the upper shell 310, the metal chips having relatively large particles cannot pass through the mesh net member 334 and are caught, but the metal chips having relatively small particles are applied to the mesh net member ( It may be concentrated and stacked at a specific position of the filter filter 262 through 334.

To prevent this, the upper shell 310 may be provided with a vibrator 318 to vibrate and shake the mesh net member 334. The upper shell 310 forms a support jaw 316 on the inside, the support jaw 316 fixedly supports a plurality of vibrators 318, and the mesh net member 334 is placed on the vibrator 318.

Thus, the mesh mesh member 334 is shaken due to the vibration of the vibrator 318, so that the metal chips can be evenly spread and dropped on the filter filter 262.

In addition, the distribution line 332 or the upper shell 310 may be provided with a guide plate 336 so that the metal chips and waste cutting oil discharged from the discharge port 333 are evenly distributed toward the mesh network member 334.

That is, the guide plate 336 serves to prevent the metal chips from being concentrated along the edge of the filter filter 262 by preventing the waste cutting oil from being sprayed to the edge of the filter filter 262.

Meanwhile, the waste cutting oil dilution unit 400 includes a waste cutting oil level sensor 405, a concentration detector 410, a dilution tank 420, a filtered cutting oil supply tank 430, and a control unit.

The waste cutting oil level sensor 405 serves to detect the level of the waste cutting oil supplied by being provided in the waste cutting oil tank 110 in real time, and the concentration detector 410 is provided in the waste cutting oil tank 110 It serves to detect the concentration of cutting oil.

In addition, the dilution liquid tank 420 serves to supply the dilution liquid to the waste cutting oil tank 110, and the filtered cutting oil supply tank 430 stores the filtered cutting oil in order to wait for supply to the processing machine 10. Plays a role.

In addition, the control unit serves to supply and control the diluted solution to the waste cutting oil according to the concentration detected in real time or at a specific time of the waste cutting oil stored in the waste cutting oil tank 110 so as to adjust the concentration of the waste cutting oil in the waste cutting oil tank 110. .

In detail, the waste cutting oil level sensor 405 may be provided with a plurality of disposed at different heights to detect the maximum and minimum water levels inside the waste cutting oil tank 110, but the water level inside the waste cutting oil tank 110 is measured in real time. It is assumed to be provided in the form of a meter needle so that it can be detected by using.

In particular, the concentration of the waste cutting oil flowing from the processing machine 10 may be different from the concentration of the initially supplied cutting oil. That is, the circulating waste cutting oil has a higher concentration and a higher viscosity than the first supplied cutting oil.

The dilution liquid tank 420 supplies a dilution liquid to the waste cutting oil tank 110 that stores the waste cutting oil, and the dilution liquid can be variously applied, such as industrial water or tap water. The diluent extends the supplement pipe 422, and the supplement pipe 422 is inserted into the waste cutting oil tank 110. In addition, the supplement pipe 422 is provided with a movable pump 424.

Thus, when the movable pump 424 is operated, the dilution liquid in the dilution liquid tank 420 is supplied to the inside of the waste cutting oil tank 110 by a set amount through the supplementary pipe 422.

On the other hand, when the control unit detects that the concentration of the waste cutting oil stored in the waste cutting oil tank 110 is out of the set value (dark) through the concentration detector 410 at a specific time or in real time, until the corresponding cutting oil reaches the concentration of the set range, The movable pump 424 is operated to supply the dilution liquid from the dilution liquid tank 420 to the waste cutting oil tank 110.

At this time, when the concentration detector 410 detects that the concentration of the waste cutting oil stored in the waste cutting oil tank 110 is in a high state, the control unit controls the operation time of the movable pump 424 by calculating the required amount of diluent through its own calculation. It is done.

In particular, when the dilution liquid is supplied to the waste cutting oil tank 110 due to the operation of the movable pump 424, the control unit may control the agitator provided in the waste cutting oil tank 110 to operate for a set time. The stirrer serves to improve the mixing properties of the waste cutting oil and the diluent.

Meanwhile, the waste cutting oil mixed with the diluent and diluted in concentration is supplied to the filtered cutting oil supply tank 430. That is, the waste cutting oil tank 110 and the filtered cutting oil supply tank 430 are connected by a circulation pipe 432. And, the circulation pipe 432 is provided with a circulation pump 434. The circulation pump 434 serves to forcibly transfer the waste cutting oil stored in the waste cutting oil tank 110 to the filtered cutting oil supply tank 430.

The filtered cutting oil supply tank 430 and the waste cutting oil tank 110 may be arranged by dividing the inside of one housing.

In particular, a filter net 436 may be provided in the circulation pipe 432. The filter net 436 serves to filter foreign substances such as metal chips from the waste cutting oil transferred to the circulation pipe 432. Of course, the filter net 436 is detachably provided in the circulation pipe 432 to enable replacement or washing.

At this time, the filtered cutting oil supply tank 430 is supplied with cutting oil when necessary, and stores the waste cutting oil transferred from the waste cutting oil tank 110. In addition, the waste cutting oil or cutting oil and waste cutting oil (hereinafter referred to as'waste cutting oil') stored in the filtered cutting oil supply tank 430 are supplied to the processing machine 10.

That is, the filtered cutting oil supply tank 430 extends the supply pipe 438, and the supply pipe 438 includes a supply pump 439. At this time, the supply pipe 438 is disposed at the edge of the cutting oil supply position of the processing machine 10. Thus, when the processing machine 10 is operated, the supply pump 439 pumps the waste cutting oil stored in the filtered cutting oil supply tank 430 to the processing machine 10 side by interlocking with it or by manual operation.

In addition, the filtered cutting oil supply tank 430 is provided with a water level sensor 437.

At this time, the water level detection sensor 437 may be provided with a plurality of disposed at different heights to detect the maximum and minimum water levels inside the filtered cutting oil supply tank 430, but the water level inside the filtered cutting oil supply tank 430 It is assumed to be provided in the form of a meter needle so that it can be detected in real time.

When the waste cutting oil stored in the filtered cutting oil supply tank 430 falls below the set level, the circulation pump 434 is operated, so that the waste cutting oil stored in a diluted state in the waste cutting oil tank 110 is filtered and the cutting oil supply tank 430 Is moved to the side. When the level of the waste cutting oil in the filtered cutting oil supply tank 430 reaches the maximum set value, the circulation pump 434 is stopped.

As a result, the control unit controls the operation of the movable pump 424 to dilute the waste cutting oil by supplying the dilution liquid to the waste cutting oil tank 110 by the concentration detector 410 by a set amount. At this time, inside the waste cutting oil tank 110, before the water level of the waste cutting oil that is raised due to the supply of the dilution liquid reaches the maximum set value, the control unit closes the waste cutting oil tank 110 so that the dilution degree of the waste cutting oil becomes a normal value. The operation of the movable pump 424 is controlled to supply the diluent while detecting the lower limit water level of the cutting oil.

And, the control unit, when the detected water level of the filtered cutting oil supply tank 430 reaches the lower limit, the supply pump 439 to supply the waste cutting oil of the waste cutting oil tank 110 to the filtered cutting oil supply tank 430 by a set level. ) To control the operation.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is only illustrative, and those of ordinary skill in the field to which the technology pertains, various modifications and other equivalent embodiments are possible. I will understand. Therefore, the true technical protection scope of the present invention should be determined by the following claims.

10: processing machine 20: discharge pipe
100: reuse device 110: waste cutting oil tank
112: frame 200: waste cutting oil filter unit
210: guide disc 220: inlet pipe
230: upper roller 240: lower roller
250: transfer member 260: filter roll
262: filtration filter 270: shaft support
300: waste cutting oil pretreatment unit 310: upper shell
320: lower shell 330: spread unit
332: distribution line 334: mesh network member
336: guide plate 400: waste cutting oil dilution unit
405: waste cutting oil level sensor 410: concentration detector
420: diluent tank 430: filtered cutting oil supply tank
440: control unit

Claims (4)

A waste cutting oil tank that receives and stores the waste cutting oil used in the processing machine;
A waste cutting oil filter that filters metal chips from the waste cutting oil supplied to the waste cutting oil tank;
A waste cutting oil pretreatment unit that preferentially filters out the relatively bulky metal chips contained in the waste cutting oil before the waste cutting oil is filtered through the waste cutting oil filter; And
And a waste cutting oil dilution unit for adjusting a concentration for reuse of the waste cutting oil stored in the waste cutting oil tank.
The method of claim 1, wherein the waste cutting oil filtering unit,
Guide discs provided with at least one pair to face each other inside the waste cutting oil tank;
It is inserted into the guide disk and rotated in a circumferential direction along with the entire guide disk by external force as both sides are rotatably provided in the waste cutting oil tank along an axial direction, and waste cutting oil and metal chips passing through the waste cutting oil treatment unit An inlet pipe having an inlet and an outlet to pass through;
At least a pair of upper rollers connected to the waste cutting oil tank in an axial direction so as to be parallel with the inlet pipe and disposed on both sides of the guide disk while being disposed above the lower circumferential surface of the guide disk;
At least a pair of lower rollers having both sides connected to the waste cutting oil tank along an axial direction so as to be parallel with the upper roller, and disposed below the upper roller;
A transfer member wound around the upper roller and the lower roller to perform an infinite orbital motion;
A filtration filter supplied from a filter roll and transferred through the guide disk and the transfer member to filter out metal chips from the waste cutting oil discharged through the outlet of the inlet pipe; And
Reusable device for waste cutting oil, characterized in that it comprises a shaft support for rotatably mounting the filter roll on the outside of the waste cutting oil tank.
The method of claim 1 or 2, wherein the waste cutting oil pretreatment unit,
An upper shell connected to the waste cutting oil tank or a frame extending upwardly from the waste cutting oil tank so as to be reciprocally moved up and down, and having an inlet port for receiving cutting fluid including metal chips;
A lower shell fixedly installed on the waste cutting oil tank or the frame, and inducing discharge of the cutting fluid that has passed through the upper shell to the waste cutting oil filter; And
And a spread unit that filters metal chips from the waste cutting oil flowing into the upper shell, and guides the waste cutting oil to move evenly toward the lower shell.
The method of claim 1 or 2, wherein the waste cutting oil dilution unit,
A waste cutting oil level sensor that is provided in the waste cutting oil tank and detects the level of the waste cutting oil supplied in real time;
A concentration detector that is provided in the waste cutting oil tank and detects the concentration of the waste cutting oil supplied;
A dilution liquid tank for supplying a dilution liquid to the waste cutting oil tank; And
And a control unit for supplying and controlling the diluent to the waste cutting oil according to a specific time of the waste cutting oil stored in the waste cutting oil tank or a concentration detected in real time to adjust the concentration of the waste cutting oil in the waste cutting oil tank. Reuse device for waste cutting oil.

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