KR20210100919A - Cutting oil tank chip purifier device and control method - Google Patents

Abstract

The present invention relates to an apparatus for removing chips in a cutting oil tank and a control method thereof, which uses a detection sensor to automatically detect filtered-out chips in a housing, thereby preventing any problem from happening due to oversaturation of chips and enabling the inside of the tank to be more efficiently cleaned. The apparatus for removing chips in a cutting oil tank in accordance with the present invention comprises: a cutting oil tank (10) containing used cutting oil; a primary housing (20) where cutting oil pumped by an oil pump (30) from the cutting oil tank (10) is introduced; a primary screen (21) disposed in the primary housing(20) to filter out impurities in the cutting oil introduced from the outside; a detection sensor (22) disposed in the upper part of the primary housing (20) to detect impurities filtered out on the primary screen (21); a secondary housing (40) where the cutting oil passed through the primary housing (20) is introduced; and a secondary screen (41) disposed in the secondary housing (40) to filter out impurities in the cutting oil introduced from the outside.

Description

Cutting oil tank chip cleaning device and its control method {CUTTING OIL TANK CHIP PURIFIER DEVICE AND CONTROL METHOD}

The present invention relates to a coolant tank chip cleaning device, and more particularly, to a chip cleaning device for cleaning chips through filtering in order to extend the service life of coolant stored in a coolant tank and a control method thereof.

In general, cutting oil is a metal processing oil used for metal processing such as cutting, grinding, grinding, drawing, pressing, and rolling of metal. This will improve the tool life.

Since this coolant is discharged in a state of mixing large and small chips and fine cuttings, when used, the chips and cuttings act on the machined surface. As it becomes rotten, it cannot perform its role as a cutting oil, so it is thrown away without being used.

In general, since a large amount of cutting oil is used as the cutting oil is continuously supplied to the machining surface in contact with the tool, the cost of the unused cutting oil is relatively high.

In addition, a large amount of waste cutting oil causes economic losses due to waste oil treatment.

Therefore, there is a need for a means for extending the life of the coolant, and a device for extending the life of the used coolant has been proposed.

As an example, in the Republic of Korea Utility Model Registration No. 489987 (registered on August 30, 2019), a technology related to "a machine tool cutting oil purification and recovery device using vacuum" has been proposed.

That is, in the above-mentioned prior art, by removing the chips and fine cutting powder remaining in the cutting oil used for machining parts in various machine tools, and recycling it at a high recovery rate and reusing it, an economic effect that can reduce the treatment cost according to the waste oil treatment will be able to enjoy

However, in the case of the above-described prior art, there was a inconvenience in that the operator has to check the amount of chips filtered from the inside and then remove them from time to time through the upper viewing window in a state where one housing (filtering device) is configured.

In particular, when the amount of the filtered chips exceeds a certain amount in the housing, the filter cannot be lifted, so that the operator has to manually scoop out the chips to solve the clogging of the hose.

Republic of Korea Utility Model Registration No. 489987 (2019.08.30.Registration) Korean Patent Registration No. 1327183 (Registered on October 30, 2013)

The present invention is proposed to improve the problems in the prior art, and the cleaning efficiency of the cutting oil is improved by separating the housing into primary and secondary two and automatically detecting chips at the position of the primary housing. It aims to improve.

The tank chip purification apparatus of the present invention for achieving the above object, the coolant tank in which the used coolant is stored; a primary housing into which the coolant pumped by the oil pump is introduced from the coolant tank; a primary filtering net provided inside the primary housing to filter foreign substances from the cutting oil introduced from the outside; a detection sensor provided on the upper portion of the primary housing to detect foreign substances filtered in the primary filtering net; a secondary housing into which cutting oil that has passed through the primary housing is introduced; It is characterized in that it constitutes a configuration including; a secondary filtering net provided inside the secondary housing to filter foreign substances of the cutting oil introduced from the outside.

In addition, the detection sensor is configured to form a predetermined length to be coupled to the opening and closing lid of the primary housing, characterized in that the cover pipe is configured to surround the detection sensor in order to improve the accuracy of the detection sensor.

The coolant tank chip cleaning device of the present invention can automatically detect the chips filtered inside the housing using a detection sensor, thereby preventing problems due to chip oversaturation and cleaning the inside more efficiently. shows an effect.

In particular, it is possible to maximize the detection efficiency of the chip, which is a conductor, by configuring the detection sensor with an electrode of a certain length.

1 is a schematic structural diagram of an apparatus according to an embodiment of the present invention;
Figure 2 is an external perspective view of the cutting oil cleaning device of the present invention.
Figure 3 is a cross-sectional structural view of the cutting oil cleaning device housing portion of the present invention.
Figure 4 is a sectional view of the primary housing separated state in the present invention.
5 is a detailed configuration diagram of the detection sensor unit in the present invention.
6 is a cross-sectional view of the secondary housing separated state in the present invention.
7 is a block diagram of the cleaning device in the present invention.
8 is a cross-sectional structural view of a cleaning device housing unit according to another embodiment of the present invention.
9 is a detailed cross-sectional view of a detection sensor installation unit according to another embodiment of the present invention.
Figure 10 is a plan view of an elastic pad in another embodiment of the present invention.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. This embodiment is provided to more completely explain the present invention to those of ordinary skill in the art.

Accordingly, the shape of the components expressed in the drawings may be exaggerated to emphasize a clearer description. It should be noted that the same components in each drawing are sometimes illustrated with the same reference numerals. In addition, detailed descriptions of functions and configurations of known technologies that may unnecessarily obscure the gist of the present invention may be omitted.

First, the configuration of the coolant tank chip cleaning apparatus according to an embodiment of the present invention will be described with reference to FIGS. 1 to 7 as follows.

The cleaning device of the present invention includes a coolant tank 10 in which used coolant is stored, and a coolant pumped by the oil pump 30 from the coolant tank 10 through a guide hose (not shown). The housing 20, the primary filtration net 21 provided inside the primary housing 20 to filter foreign substances from the coolant introduced from the outside, and the primary filtration net provided on the upper part of the primary housing 20 A detection sensor 22 for detecting foreign substances filtered in 21, a secondary housing 40 through which cutting oil that has passed through the primary housing 20 is introduced, and the secondary housing 40 are provided inside The configuration of the secondary filtration network 41 that filters foreign substances of the cutting oil introduced from the outside is formed.

In particular, the detection sensor 22 is configured to be detachably coupled to the opening/closing lid 24 of the primary housing by being composed of an electrode of a certain length in order to improve the detection efficiency of the metallic chip, which is a conductor, and the detection sensor 22 In order to improve accuracy, the cover pipe 23 is configured to surround the detection sensor 22 to prevent malfunction due to stimulation of external water and chips, such as the side. At this time, it can be seen from FIG. 5 that the detection sensor 22 protrudes a predetermined length (h) to the lower portion of the cover pipe 23 .

In addition, the primary filtration network 21 is formed in the form of a perforated network, and a mesh filter 21a is integrally provided inside, and the secondary filtration network 41 is provided with a bag filter in the form of a non-woven bag to block fine foreign substances. , The secondary filtration network 41 is detachably provided on the ring portion 41b provided on the support ring 41a, and the secondary housing 40 includes a pressure gauge 45 for measuring internal pressure change. .

In the drawings, reference numeral 44a denotes a see-through window provided on the opening and closing lid 44, and reference numeral 50 denotes a control unit for controlling the operation of the device of the present invention.

Let's take a look at the effects of the operation and control of the tank chip cleaning apparatus of the present invention constituting such a configuration.

In the process in which the used coolant stored in the coolant tank 10 is circulated by the oil pump 30 , foreign substances including relatively thick chips are filtered in the primary housing 20 , and in the secondary housing 40 , After foreign substances including micro-sized chips are filtered out, the purified cutting oil is recovered back to the cutting oil tank 10 so that it can be reused.

That is, the cutting oil flowing into the primary housing 20 from the coolant tank 10 first passes through the primary filtration network 21 provided with the mesh filter 21a to filter out coarse chips.

At this time, when the filtered chips in the primary filtering network 21 are accumulated over a certain amount, the chips come into contact with the detection sensor 22 and a detection signal is sent to the control unit 50, and accordingly, the control unit 50 By stopping the operation of the pump 30, the inflow of cutting oil is further blocked.

Then, the operator opens the opening/closing lid 24 to separate the primary filtering net 21 from the primary housing 20 to remove foreign substances including chips, thereby preventing clogging of the guide hose.

In particular, since the detection sensor 22 is protected by the cover pipe 23 and has a structure in which only the lower end is exposed to the outside by a certain length (h), it prevents malfunction due to side contact stimulation during the movement of the coolant. be able to do

In addition, cutting oil is continuously filtered by the secondary filtration net 41 in the secondary housing 40, and when the secondary filtration net 41 is clogged due to foreign substances such as fine chips, an increase in internal pressure is prevented. After the pressure gauge 45 detects and sends a signal to the controller 50 to stop the operation of the oil pump 30 , the cleaning operation of the secondary filtration network 41 can also be performed.

Therefore, the present invention enables automatic detection when the amount of chips filtered inside the housing exceeds a certain amount using the detection sensor, thereby preventing the occurrence of problems due to oversaturation of the chip and cleaning the inside more efficiently. show the effect.

On the other hand, FIG. 8 shows a configuration according to another embodiment of the present invention. The secondary housing 40 has a detection sensor 42 for detecting foreign substances filtered by the secondary filtering net 41 on the opening and closing lid 44 . It can be seen that the combined configuration is formed.

When such a configuration is achieved, since the detection sensors 22 and 42 are provided in the primary housing 20 and the secondary housing 40, respectively, the chips in the primary filtration network 21 as well as the secondary filtration network 41 are provided. When this amount is accumulated more than a certain amount, the detection sensor 42 automatically detects it so that the cleaning operation can be performed.

9 and 10 show another embodiment of the present invention, the lower end of the cover pipe 23 is provided with a blocking brush 23a for blocking the inflow of foreign substances, and an electrode rod-shaped inside is provided. An elastic pad 23b for elastically supporting the detection sensor 22 to prevent vibration is configured, and a through hole 23c into which the detection sensor 22 is inserted is formed through the elastic pad 23b and a plurality of elastic pads The springs 23d are provided at regular intervals in the radial direction.

When such a configuration is achieved, foreign substances including chips are prevented from flowing into the cover pipe 23 by the blocking brush 23a in the form of a brush, thereby preventing malfunction of the detection sensor 22 .

In addition, due to the double elastic support force of the elastic pad 23b and the elastic spring 23d, stable support of the detection sensor 22 and generation of vibration are prevented, thereby exhibiting the advantage of preventing sensor failure.

And, although specific embodiments of the present invention have been described and illustrated in the above, it is obvious that the structure of the coolant tank chip cleaning apparatus of the present invention can be variously modified and implemented by those skilled in the art.

For example, in the above embodiment, it has been described and illustrated that the detection sensor is in the form of an electrode and sensing by contact is made. However, when the chip is a non-conductor (insoluble coolant), the detection sensor is positioned instead of the electrode. A photosensor for sensing can be used.

Accordingly, such modified embodiments should not be individually understood from the technical spirit or scope of the present invention, and such modified embodiments should be included within the appended claims of the present invention.

10: coolant tank 20: primary housing
21: primary filtration network 22: detection sensor
23: cover pipe 24: opening and closing lid
30: oil pump 40: secondary housing
41: secondary filtration network 44: opening and closing lid
44a: sight window 45: pressure gauge
50: control unit

Claims (6)

a coolant tank 10 in which used coolant is stored;
a primary housing 20 into which the coolant pumped by the oil pump 30 from the coolant tank 10 flows;
a primary filtering net 21 provided inside the primary housing 20 to filter foreign substances of cutting oil introduced from the outside;
a detection sensor 22 provided in the upper portion of the primary housing 20 to detect foreign substances filtered in the primary filtering net 21;
a secondary housing 40 through which the cutting oil passing through the primary housing 20 flows;
a secondary filtering net 41 provided inside the secondary housing 40 to filter foreign substances of cutting oil introduced from the outside;
Cutting oil tank chip cleaning device, characterized in that it comprises a configuration. The method according to claim 1,
The detection sensor 22 is composed of an electrode of a certain length and is coupled to the opening/closing lid 24 of the primary housing, and a cover pipe in a shape surrounding the detection sensor 22 to improve the accuracy of the detection sensor 22 . (23) is configured, and the detection sensor 22 is a cutting oil tank chip cleaning device, characterized in that it protrudes a predetermined length (h) to the lower portion of the cover pipe (23). The method according to claim 1,
The primary filtration network 21 is formed in the form of a perforated network, and a mesh filter 21a is integrally provided therein, and the secondary filtration network 41 is provided with a bag filter in the form of a bag to block fine foreign substances, The secondary filtering net 41 is detachably provided on the ring portion 41b provided on the support ring 41a, and a pressure gauge 45 for measuring internal pressure change is configured on one side of the secondary housing 40 Coolant tank chip cleaning device with The method according to claim 1,
Cutting oil tank chip cleaning device, characterized in that the secondary housing (40) is further configured with a detection sensor (42) for detecting foreign substances filtered by the secondary filtering net (41). 3. The method according to claim 2,
A blocking brush 23a is provided at the lower end of the cover pipe 23 to block the inflow of foreign substances, and an elastic pad 23b for preventing vibration by elastically supporting the electrode rod-shaped sensor 22 inside. is configured, and a through hole 23c into which the detection sensor 22 is inserted is formed through the elastic pad 23b, and a plurality of elastic springs 23d are provided at regular intervals in the radial direction. Tank chip cleaning device. In the control method of the tank chip cleaning apparatus according to any one of claims 1 to 5, when a detection signal is transmitted by the detection sensor configured in the primary housing, the operation of the oil pump is stopped by the control unit, and then the primary housing Cutting oil tank chip cleaning device control method, characterized in that the internal cleaning operation is made.

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