KR200334243Y1 - Cutting oil filtering device - Google Patents

Abstract

The present invention relates to a coolant filtering device, and more particularly, a coolant filtering device capable of improving the life of cutting oil and increasing processing efficiency by filtering the coolant mixed with fine metal powder generated in machining by arranging diatomaceous earth in multiple layers. It is about.

An object of the present invention is to provide a coolant filtering device that can minimize the waste of coolant when refining the coolant used during machining, reduce the maintenance cost of the filtering device, and increase the filtering efficiency of fine chips and foreign substances. have.

In order to realize the above object, the present invention provides a first space part 1 in which cutting oil containing foreign substances such as chips generated during machining is stored, and a second space part 2 in which the purified cutting oil is stored. A tank (4) provided with a diaphragm (3) to be divided, a pre-filter part (5) configured to remove metal foreign matters in advance from the cutting oil supplied to the first space part (1) by the magnet (14), The filtering unit 6 is installed in the upper portion of the second space portion 2 and is formed so that the filtered cutting oil falls into the second space portion 2 and configured to filter while cutting oil passes through the multilayer diatomaceous earth 23. And a first pump 7 for sucking cutting oil and chips from the first space 1 and supplying the cutting oil and chips to the filtering unit 6, and the purified cutting oil stored in the second space 2. Characterized in that it comprises a second pump (8) for feeding back to the machining site.

Description

Coolant Filtering Device {CUTTING OIL FILTERING DEVICE}

The present invention relates to a coolant filtering device, and more particularly, a coolant filtering device capable of improving the life of cutting oil and increasing processing efficiency by filtering the coolant mixed with fine metal powder generated in machining by arranging diatomaceous earth in multiple layers. It is about.

In general, when machining such as grinding, discharging, honing, wire cut discharge, etc., the lubricant or coolant is continuously supplied to the machining site for lubrication.

That is, the above machining process is a process of cutting a metal to form a certain shape. In the above machining process, since high heat is inevitably generated, lubricating oil or cooling water is continuously sprayed to the processing site for reducing heat generation and cooling. will be.

Here, a lot of metal powder (CHIP) generated in the cut portion during the machining process, the lubricant or cooling water also serves to remove the chip.

Thus, in order to use the lubricant or cooling water again after using it once, the chips or foreign substances mixed in the lubricant or cooling water are removed and used, and a separate filtering device is used to remove the chips or foreign substances.

The filtering device typically uses a lot of paper filter types, which allows the cutting oil containing the keep or foreign material to pass through the paper filter to filter out chips or foreign matter.

However, if a filter such as a paper filter is used when refining the cutting oil as described above, the paper filter does not filter out fine chips or foreign matters, which affects the precision processing of using the recycled cutting oil again. There is a problem.

In addition, the paper filter has a problem that the use time is too short, the filter consumption is large and the cost incurred due to this, and the cutting oil is also discharged to the paper when the replacement of the paper filter is replaced, the waste of cutting oil is severe. have.

Accordingly, an object of the present invention is to solve the above problems, to minimize the waste of cutting oil when refining the cutting oil used in machining, to reduce the maintenance cost of the filtering device, and to improve the filtering efficiency of fine chips and foreign substances It is to provide a coolant filtering device that can be increased.

In order to achieve the above object, the present invention is provided with a diaphragm that is divided into a first space portion for storing cutting oil containing foreign substances such as chips generated during machining and a second space portion for storing purified cutting oil. A pre-filter unit configured to remove metal foreign matters with a magnet in advance from the tank, the cutting oil supplied to the first space portion, and the upper portion of the second space portion, and the filtered cutting oil is dropped to the second space portion. And a filtering unit configured to filter the cutting oil while passing through the multilayer diatomaceous earth, a first pump for sucking cutting oil and chips from the first space part and supplying the cutting oil and chips to the filtering unit, and the purified cutting oil stored in the second space part. It characterized in that the configuration as a second pump for supplying back to the machining site.

1 is a front view showing a filtering device according to the present invention,

2 is a plan view of FIG.

3 is a side cross-sectional view of FIG.

4 is a partially enlarged view illustrating a coupling state of a filtering disc and an input pipe in FIG. 3;

FIG. 5 is a perspective view of the filtering disc in FIG. 4; FIG.

Explanation of symbols on the main parts of the drawings

1: first space part 2: second space part

3: plate 4: tank

5: pre-filter unit 6: filtering unit

7: 1st pump 8: 2nd pump

9: strainer 10: outlet

11: inlet 12: prefilter case

13: motor 14: magnet

15: Separator 16: Chip Reservoir

17: inlet pipe 18: housing

19: hinge 20: cover

21: input pipe 22, 31: through hole

23: diatomaceous earth 24: filtering disc

25: discharge tube 26: support member

27: inlet hole 28: laminated member

29: Screen 30: Guide plate

32: fastening member 33: embossed portion

1 and 2 are a front view and a plan view showing a cutting oil filtering device according to the present invention, the first space portion (1) for storing the cutting oil containing the foreign matter such as chips generated during machining and the purified cutting oil A tank 4 in which the diaphragm 3 is installed to be divided into the second space part 2 to be stored, and a free structure configured to remove metal foreign matters with a magnet in advance from the cutting oil supplied to the first space part 1. Filtering portion 5 and the filtering space is installed on the upper portion of the second space portion 2 and formed so that the filtered cutting oil falls into the second space portion 2 and configured to filter the cutting oil while passing through the multilayer diatomaceous earth. The first pump 7, which sucks cutting oil and chips from the first space 1, and supplies the cutting oil and chips to the filtering unit 6, is stored in the second space 2. It consists of the 2nd pump 8 which supplies purified cutting oil again to a machining site | part.

The hole H is formed at the upper end of the diaphragm 3 so that the purified cutting oil of the second space part 2 flows into the first space part 1. By cutting off the cutting oil of the second space part 2 to the first space part 1 side, the contaminated cutting oil level on the first space part 1 side is prevented from becoming too low.

Of course, since the first space portion 1 is a portion to which the pump is sucked and the second space portion 2 is a portion to which the coolant which has been purified through the injection pipe 21 is always supplied, Since the cutting oil level of 2) is high, the cutting oil contaminated from the first space portion 1 to the second space portion 2 does not flow back through the hole H.

The pre-filter unit 5 is installed on one side of the tank 4, the filter mesh 9 is formed with a plurality of holes of a predetermined size, and the discharge port 10 so as to feed the cutting oil to the upper surface of the filter mesh (9) Is formed and the pre-filter case 12 having the inlet 11 formed thereon so that the cutting oil flows from the machining device, and is installed inside the pre-filter case 12 and rotated by the motor 13 to sort the metal. A cylindrical magnet 14 installed so as to be detached from the magnet 14, a separating plate 15 provided close to the magnet 14 so as to detach the chip attached to the magnet 14, and the separating plate 15 being separated from the magnet. It consists of a chip storage bin 16 is stored metal chips.

In addition, the filtering unit 6 is a housing formed in a cylindrical shape so as to have a relatively large space connected to the upper surface of the inlet pipe 17 and the upper surface of the inlet pipe 17 and the second space (2) 18, a cover 20 coupled with a hinge 19 so as to intermittently open and close the upper surface of the housing 18, and fixed in a state of being inserted into the inlet pipe 17; (18) The injection pipe 21 is installed to protrude a predetermined height into the inside, and the through-hole 22 is formed in the center portion to be fitted into the injection pipe 21, and is formed in a disc shape diatomaceous earth (23) The plurality of filtering disks 24 filled with a predetermined thickness and the cutting oil not passing through the diatomaceous earth of the filtering disk 24 are not introduced into the input pipe 21, and only the cutting oil passing through the diatomaceous earth is the input pipe ( 21 installed between the feed pipe 21 and the filtering disk 24 to be drawn in. It consists of a de means.

The discharge pipe 25 of the first pump 7 is connected to the inlet pipe 17 so that the coolant flows into the housing 18 through the gap between the inlet pipe 17 and the inlet pipe 21. The coolant flows through the outer circumferential surface of the filtering disk 24 and is filtered by the diatomaceous earth 23, and the filtered cutting oil is introduced into the input pipe 21 to be filled in the second space 2.

The guide means installed between the filtering disk 24 and the inlet tube 21 is fixed to the inlet tube 21 in a state where it is located at the bottom of the housing 18 as shown in FIGS. 4 and 5. The inner diameter is formed to be seated on the support member 26 and the upper surface of the support member 26 and closed by the sealing means and spaced apart from the input pipe 21 to allow the cutting oil to move. Formed on the bottom surface of the stacking member 28 having the inlet hole 27 and the filtering disk 24 coupled to the outer circumferential surface of the stacking member 28 so that the diatomaceous earth 23 passes through the diatomaceous earth 23 without being pulled out. A screen 29 configured to pass only the cutting oil, a guide plate 30 formed on the bottom surface of the filtering disc 24 so that the cutting oil passing through the screen 29 flows into the inflow hole 27, and It is formed at a predetermined interval in the input pipe 21 is drawn into the inlet hole (27) The through hole 31 formed to enter the cutting oil into the feed tube 21 and the fastening member 32 screwed to the upper end of the feed tube 21 to press and close the plurality of laminated members 28. Consists of

That is, in the state in which the plurality of the filtering disks 24 are stacked, cutting oil is not directly introduced into the input pipe 21 by the support member 26 and the stacking member 28, and guides through the diatomaceous earth 23. It is to be introduced only through the plate (30).

The guide plate 30 is formed with a plurality of embossing portion 33 to maintain the space with the filtering disk 24.

Referring to the operation and effect of the present invention as described above will be introduced into the inlet 11 of the pre-filter case 12 the cutting oil generated when machining in the machining apparatus.

As the cutting oil in the contaminated state is introduced into the inlet 11 and the motor 13 is operated, the cylindrical magnet 14 is rotated. The metal chips mixed in the cutting oil are separated from the magnet 14. Only the cutting oil, which is attached while passing and the chips are removed, falls to the outlet 10.

At this time, the chip attached to the magnet 14 is separated from the magnet 14 while being caught by the separating plate 15 in close contact with the upper surface of the magnet 14, the chip is downward along the separating plate 15 It is stored in the reservoir (16).

When the cutting oil, most of the chips are removed by the magnet 14 is stored in the first space portion 1 of the tank 4, the first pump (7) operates while sucking the cutting oil and at the same time discharge pipe 25 The cutting oil is supplied to the space between the inlet pipe 17 and the inlet pipe 21 through the bar, and upwards through the space between the inlet pipe 17 and the inlet pipe 21. Is filled in.

At this time, since the bottom surface of the filtering disk 24 is blocked, the cutting oil flows upward along the inner surface of the housing 18 and flows into the upper surface of each filtering disk 24.

That is, the cutting oil flows into the powdery or cakey diatomaceous earth 23 filled in the upper surface of the filtering disk 24. When the diatomaceous earth 23 passes through the diatomaceous earth 23, the foreign matter contained in the cutting oil, that is, the magnet 14 Chips that are not collected in the diatomaceous earth (23) will be filtered.

The diatomaceous earth (23) is a siliceous raw material produced as powder as aggregates in which the harmfulness of single-cell algae has been deposited on the seabed or the bottom of the sea. In general, the volume porosity is generally 6-8 times that of ordinary clay and the permeability is about 0.0957 mm / cm 2 at 1 cm thickness.

When the coolant passes through the diatomaceous earth 23, the coolant is collected into the guide plate 30 through the screen 29 and the laminated coolant flowing through the guide plate 30 is introduced through the inlet hole 27. It flows in the space | interval between 28 and the input pipe 21.

The cutting oil introduced into the gap between the stacking member 28 and the feed pipe 21 flows into the through hole 31 formed in the feed pipe 21 and falls downward, and the second space portion of the tank 4 ( 2) is filled.

When the purified coolant is filled in the second space part 2 of the tank 4, the second pump 8 is operated to circulate the purified coolant back to the processing machine. The diatomaceous earth 23 described above. As it passes through, it is possible to continuously reuse the very cleanly purified coolant.

Since the diatomaceous earth 23 does not need to be replaced at any time as in the conventional paper filter, the consumption of cutting oil is virtually eliminated. Since the purification ability is superior to that of the paper filter, the precision and processing efficiency of the processing machine that reuses the cutting oil are improved. You can do it.

Of course, the plurality of filtering disks 24 described above are stacked in the input pipe 21, and then, by pressing the fastening members 32 strongly so that each of the laminated members 28 comes into close contact with the O-ring, diatomaceous earth 23 Cutting fluid not passed through) is not introduced into the input pipe (21).

As described above, the present invention consists of a filtering disk and a stacking member and a housing for laminating the diatomaceous earth used for the purification of the cutting oil and the diatomaceous earth used for the refinement of the food, such as food, so that the used cutting oil is continuously purified without being consumed. There is an advantage to use.

Claims (5)

The tank is provided with a diaphragm so as to be divided into a first space portion for storing cutting oil containing foreign substances, such as chips generated during machining, and a second space portion for storing purified coolant oil, and the first space portion. And a pre-filter unit configured to remove metal foreign matter from the cutting oil to be magnetized in advance, and the upper portion of the second space portion, and the filtered cutting oil is formed to drop into the second space portion, and the cutting oil is filtered while passing through the multilayer diatomaceous earth. The filtering unit, the first pump for sucking cutting oil and chips from the first space part and supplying the cutting oil and chips to the filtering part, and the second pump for supplying the purified cutting oil stored in the second space part to the machining part again. Coolant filtering device, characterized in that consisting of. The method of claim 1, The pre-filter unit is installed on one side of the tank and the filter net formed with a plurality of holes of a predetermined size, the discharge port is formed to feed the cutting oil to the upper surface of the filter net and the inlet is formed so that the cutting oil flows from the machining device A filter magnet, a cylindrical magnet installed inside the pre-filter case installed to select metals while being rotated by a motor, a separator plate installed close to the magnet to detach the chip attached to the magnet, Cooling oil filtering device, characterized in that consisting of a chip reservoir for storing the metal chip separated from the magnet by the separator. The method according to claim 1 or 2, The filtering unit is coupled to the inlet pipe connected to the upper surface of the second space portion, the housing is formed in a cylindrical shape to have a relatively large space connected to the upper surface of the inlet pipe, coupled to the hinge so as to intermittently open and close the upper surface of the housing And a through hole formed in a central portion so as to be fitted into the cover, the inlet tube fixed in a state inserted into the inlet pipe and installed to protrude a predetermined height into the housing, and the inlet pipe is formed in a disc shape. In addition, a plurality of filtering disks filled with diatomaceous earth with a predetermined thickness, and the input pipe and filtering so that only the coolant passing through the diatomaceous earth is introduced into the input pipe while preventing the coolant not passing through the diatomaceous earth of the filtering disk. Cooling oil filtering device, characterized in that it comprises a guide means provided between the disk. The method of claim 3, The guide means is located on the bottom of the housing and the support member fixed to the feed tube, and seated on the upper surface of the support member while being sealed by a sealing means and spaced apart from the feed tube so that the cutting oil is movable. A stacking member having an inner diameter and a plurality of inflow holes formed in a horizontal direction, and a screen formed on a bottom surface of the filtering disk coupled to the outer circumferential surface of the stacking member so that only the cutting oil passing through the diatomaceous earth passes without diatomaceous earth; A guide plate configured on the bottom surface of the filtering disc so that the cutting oil passing through the screen flows into the inlet hole, a through hole formed at a predetermined interval in the inlet tube and into which the cutting oil introduced into the inlet hole enters the inlet tube; Screw on top of feed tube to press and hold a number of laminated members Coolant filtering apparatus characterized in that it consists of a fastening member which is the sum. The method according to claim 1 or 2, And a hole formed at an upper end of the diaphragm and configured to overflow into the first space part when the coolant is filled with too much cutting oil in the second space part.