KR102021423B1 - Coolant regeneration and recycling feeder - Google Patents

Abstract

The present invention relates to a cutting fluid regeneration and recycling feeder detecting a storage level of cutting fluid to control operation in accordance with the storage level. According to the present invention, the cutting fluid regeneration and recycling feeder comprises: a base having a contaminated fluid storage space and a clean fluid storage space; an impurity removing module removing an impurity with a different specific gravity from contaminated fluid stored in the contaminated fluid storage space; a clean fluid transfer module transferring clean fluid, from which impurities have been removed, to the clean fluid storage space; and a clean fluid feeding module communicating with the clean fluid storage space to feed the clean fluid stored in the clean fluid storage space to a machining tool side.

Description

Coolant regeneration and recycling feeder

The present invention relates to a cutting oil regeneration and recycling supply device, and more particularly, to configure the cutting oil used in the machine tool, such as to filter the foreign matter through the centrifuge and to recycle, but may occur in the pipe when the machine tool is inoperative The present invention relates to a coolant regeneration and recycling supply device that solves a fear of breakage caused by such a pressure increase as a relief valve and detects a coolant level and controls an operation according to the level.

In general, in a machine tool that processes metal such as rolling, drawing, cutting, and grinding, very high frictional force is applied between the target metal and the machine tool.

Therefore, in order to increase the lubricity between the target metal and the machine tool and lower the heat generated during the friction process, rolling oil, drawing oil, cutting oil, grinding oil, etc. are used as emulsified oil-type processing oils having excellent lubricity and cooling property. The processing emulsion is collected in a concentrated tank after use and recycled repeatedly.

Such processing oil is collectively referred to as cutting oil in the following description.

These coolants can be largely divided into non-aqueous and water-soluble cutting oils, and the non-aqueous cutting oils can be classified into oil-based and chloride-based oils, and water-soluble coolants can be classified into emulsion type and synthetic type. The demand for water soluble coolant is increasing in consideration of various factors such as workability / coolability.

In the case of water-soluble cutting oils, emulsion type and synthetic type have good metal workability, but they are mixed with water, so they are accompanied by the propagation of bacteria. Will accompany.

Particularly, since bacteria have the most vigorous breeding temperature around 38 ° C, they feed on fat components, corrosion inhibitors, etc. of water-soluble cutting oils. Due to the high amount of mineral oil components, bacteria that multiply in a short time due to the growth of bacteria can not be avoided due to contamination of cutting oil, and there was a problem that should be replaced at any time.

Accordingly, the cutting oil easily rots due to bacteria contamination during continuous machining and high temperature outside, and the smell caused by this stimulates the sense of smell of the worker, and causes various dermatitis on contact and adversely affects the working environment. There was a problem of lowering productivity and work efficiency.

Therefore, it is very important to remove bacteria in the process of regenerating and recycling the cutting oil after use.

Korean Patent No. 10-0359205 is a technique for solving this problem and at the same time regenerating and recycling cutting oil after use. In the prior art, in the cutting oil regeneration processing device is installed in the processing machine to recycle the cutting oil and recirculating the cutting oil, on one side of the processing machine is provided with an ozone generator which is integrated on and off with the processing machine, the ozone generator A control terminal for integrally controlling the amount of ozone generated in the unit, and connecting and installing the ozone supply pipe end of the ozone generator so as to be located at the bottom bottom of the cutting oil dust filter located upstream of the cutting oil dust tank of the processing machine, and collecting the cutting oil dust. The waste ozone treatment unit is installed downstream of the tank, and the cutting oil introduced into the dust collecting tank through the cutting oil dust collecting tank is sterilized by ozone aerated at the end of the ozone supply pipe, and then recycled by the circulation motor.

This conventional technology is composed of each component for regenerating the cutting oil, such as ozone generator, cutting oil dust filter, and circulation motor is separated, each process must be divided into progress, according to the management and maintenance for each equipment accordingly There was a problem of rising costs.

On the other hand, in the case of the microchip generated by the processing of metal or non-metal, the circulation along with the cutting oil is inevitably accumulated in the cutting oil tank, and the cleaning operation of the cutting oil tank must be performed at any time, and the microchip is introduced into the circulation pump. As a result, a failure rate such as malfunction of the pump was increased.

(0001) Republic of Korea Patent No. 10-0359205

The present invention has been proposed to solve the above problems, and configured to recycle the cutting oil used in the machine tool, such as by filtering the foreign matter through a centrifuge, the pressure that can occur in the pipe when the machine tool is inoperative The purpose of the present invention is to provide a coolant regeneration and recycling supply device that solves the risk of damage due to factors such as an increase through a relief valve and detects the coolant level and controls the operation of the coolant level.

In order to achieve the above object, the present invention is partitioned into a plurality of spaces through the partitions disposed therein, a portion of the partitioned space is a contaminated liquid storage space in which a contaminated liquid containing impurities such as chips (chip) is stored Another part of the partitioned space is formed, the base is formed with a clean liquid storage space for storing the clean liquid of the purified state; And,

An impurity removal module for removing impurities having different specific gravity from the pollutant stored in the pollutant storage space;

A clean liquid transfer module communicating with the impurity removal module to transfer the clean liquid from which impurities are removed to the clean liquid storage space;

Includes a clean liquid supply module for supplying the clean liquid stored in communication with the clean liquid storage space to the processing machine side,

The clean liquid supply module,

A supply pump for supplying a clean liquid stored in the clean liquid storage space;

One end is coupled to the supply pump and the other end is coupled to the cutting oil outlet disposed on the processing machine side includes a transfer pipe for transporting the clean liquid,

The transfer pipe,

An inlet pipe coupled with the supply pump;

A discharge pipe coupled with the cutting oil discharge port,

A branch pipe disposed between the inlet pipe and the discharge pipe and having a plurality of transfer paths;

It is characterized in that it comprises a relief valve disposed in the discharge pipe is opened and closed in accordance with the pressure change in accordance with the operation of the supply pump and the operation of the processing machine.

In addition, the relief valve,

The supply pump is operated,

The processing machine is open when not in operation,

Relieve the pressure formed in the discharge pipe,

The supply pump is operated,

The processing machine is closed during operation,

The cleaning liquid supplied through the processing pump is characterized in that for supplying to the processing machine side.

And on the base,

It is characterized in that it is further provided with a precipitation cooler for lowering the temperature of the cleaning liquid conveyed when opening the relief valve.

In addition, the impurity removal module,

A transfer pump for pumping the contaminant stored in the contaminant storage space;

It characterized in that it comprises a centrifuge for separating the cutting oil from the chips contained in the transferred contaminated liquid.

In addition, the clean liquid storage space,

A circulation pump for circulating the stored clean liquid is further provided.

In addition, the cleaning liquid storage space is characterized in that the water level sensor for checking the level of the stored liquid is further provided.

Furthermore, in the base,

Defoamer supply means for supplying a defoamer (消泡劑) to the contaminant storage space is further provided,

The defoamer supply means,

Antifoam storage tank,

And a defoamer timer for supplying the defoamer stored in the defoamer storage tank to the contaminant storage space in association with at least one of the contaminant input amount or the contaminant input time.

The present invention made as described above through the centrifuge to filter out foreign substances with different specific gravity to regenerate the contaminated contaminated liquid as a clean liquid, and continuously supply in the situation where the machine tool is stopped in the process of supplying the clean liquid to the machine tool When high pressure is generated in the discharge pipe due to the pressure, it can be eliminated through the relief valve to prevent damage and damage to the discharge pipe, and heat generated during the regeneration and recycling process can be eliminated through the precipitation cooler to prevent problems caused by overheating. It can be effective.

On the other hand, by being stored for a long time in the process of supplying the cleaning liquid to the machine tool is provided with a circulation pump to prevent the corruption there is an effect that can prevent the corruption of the cleaning liquid.

1 is an exemplary view showing the cutting oil regeneration and recycling supply apparatus according to the present invention from the front.
Figure 2 is an exemplary view showing a cutting oil regeneration and recycling supply apparatus according to the present invention from the side.
Figure 3 is an exemplary view showing a cutting oil regeneration and recycling supply apparatus according to the present invention in a plan view.
4 is an exemplary view showing a transfer pipe according to the present invention.
5 is an exemplary view showing a base according to the present invention.

Hereinafter, other objects and features of the present invention in addition to the above object will be apparent through a description of the embodiments with reference to the accompanying drawings.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art, and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the cutting oil recycling and recycling supply apparatus according to the present invention.

The cutting oil regeneration and recycling supply apparatus 1 according to the present invention includes a base 10, an impurity removal module 20 for removing impurities from a contaminant containing impurities after use, and a clean liquid from which impurities are removed. Clean liquid transfer module 30 for transferring to the clean liquid storage space 13 formed in the base 10, and a clean liquid supply module for supplying the clean liquid stored in the clean liquid storage space 13 to the machine tool side ( 40).

The base 10 has a rectangular housing shape as a whole, and a plurality of storage spaces are formed by a plurality of partitions 11, and the spaces formed by the partitions 11 are used after use in a machine tool. It is divided into a contaminant storage space 12 in which a contaminant containing an impurity such as an impurity is stored, and a clean liquid storage space 13 in which a clean liquid from which impurities are removed is stored through an impurity removal module 20 to be described later.

In addition, the base 10 is to be described later each component is disposed on the top, while supporting the components disposed on the top and can communicate with the contaminant storage space 12 and the clean liquid storage space 13 The upper plate 16 is formed with a plurality of communication holes 161 to be further provided.

Meanwhile, an antifoaming agent is provided to suppress bubbles generated in the contaminant storage space 12 and to remove some of the waste oil. To this end, the base 10 is provided with an antifoam supplying means 18. do. In this case, the antifoaming agent is a kind of surfactant that suppresses the foaming property, and silicone oil is representative. In addition, octyl alcohol or boric acid may be used.

The defoaming agent supply means 18, the antifoaming agent in conjunction with at least one of the antifoam storage tank 181 in which the antifoam is stored, the amount of the contaminant introduced into the contaminant storage space 12 or the input time of the contaminant Defoamer timer 182 for supplying the defoamer stored in the storage tank 181 to the contaminant storage space (12).

The antifoam supply pump (not shown) may be further provided to transfer the defoamer stored and disposed in the antifoam storage tank 181.

The defoaming agent storage tank 181 has an area of a predetermined volume formed therein to store the defoaming agent and is connected to the contaminant storage space 12 through a pipe.

The antifoam timer 182 adjusts the interval for supplying the antifoam according to the amount of the contaminant transferred to the contaminant storage space 12 or the storage amount of the contaminant stored in the contaminant storage space 12.

The impurity removal module 20 is for removing impurities from contaminants containing chips after use, and includes a transfer pump 21 and a centrifuge 22.

The transfer pump 21 pumps the contaminant stored in the contaminant storage space 12 of the base 10 and transfers the contaminant to the centrifuge 22. The operation is controlled through an applied power and a signal. .

Here, the pipe connecting the transfer pump 21 and the contaminant storage space 12 and the transfer pump 21 and the centrifugal separator 22 is well known and thus the detailed description and illustration are omitted.

The centrifuge 22 removes impurities from the contaminated liquid transferred through the transfer pump 21 and is disposed on the base 10 and operated through an applied power and signal.

At this time, an oil skimmer may be further disposed between the centrifuge 22 and the transfer pump 21 to remove bacteria contained in the contaminant, and the oil skimmer may be a belt type or a belt type. It may be configured of any one of the disk type (disk type).

The oil skimmer is to separate the waste oil from the water-soluble cutting oil, and the waste oil forms a coating on the water-soluble cutting oil to block the supply of oxygen to the water-soluble cutting oil, thereby increasing the propagation of anaerobic bacteria. Minimize the growth and growth of bacteria by separating it from water soluble coolant.

Such oil skimmers are known and are as described in Korean Patent Registration No. 10-0334488, for example.

The contaminant passing through the oil skimmer is introduced into the centrifuge 22 to separate the cutting oil from the chips included in the contaminant.

That is, the cutting oil used in the machine tool is stored after being transferred to the contaminant storage space 12 in a state in which the chip separated from the metal to be processed after use is included in the cutting oil, and is then primarily waste oil through the oil skimmer. Filtered waste oil is discharged and collected to the outside through a separate drain pipe.

On the other hand, the chip contained in the contaminated liquid is transported in a state precipitated in the contaminated liquid, there is a problem that a large number of contaminated liquid buried in the chip is also lost if only the chip is discharged to the outside. Therefore, after separating the contaminated liquid on the chip through the centrifuge 22 from the chip and discharged only the chip to the outside, the contaminated liquid is regenerated into the clean liquid from which the chip is removed and at the same time the contaminated liquid (cutting oil) buried on the chip It can be recycled.

The centrifugal separator has a columnar body and an inner cylinder installed inside the body and an input unit installed in the body, and a chip is inserted therein, and a rotating shaft rotated by a motor in the inner cylinder and rotated together with the rotating shaft. It includes a porous plate for separating the cutting oil. The structure and operation relationship of the centrifuge is as known through the Republic of Korea Patent No. 10-1759882.

Next, the cleaning liquid transfer module 30 transfers the filtered cleaning liquid while passing through the impurity removal module 20 to the cleaning liquid storage space 13 formed in the base 10.

To this end, the clean liquid transfer module 30 includes a transfer pipe 31, and the transfer pipe 31 passes through the centrifuge 22 while operating through an applied power and a signal to remove impurities. The filtered clean liquid is transferred to the clean liquid storage space 13.

The clean liquid transfer module 30 may further include a transfer pump (not shown) installed in the transfer pipe 31 to expect smooth transfer of the clean liquid.

The clean liquid supply module 40 is for supplying the clean liquid stored in the clean liquid storage space 13 to the machine tool side, and includes a supply pump 41 and a transfer pipe 42 for this purpose.

The supply pump 41 supplies the stored clean liquid to the conveying pipe 42 while operating through an applied power and a signal.

In addition, the transfer pipe 42 is to transfer the clean liquid pumped through the supply pump 41 to the machine tool side, one side is coupled to the supply pump 41 and the other side to the cutting oil outlet provided in the machine tool Combined.

Looking at the transfer pipe 42 in more detail, the inlet pipe 43 is coupled to the supply pump 41 and the discharge pipe 44 is coupled to the machine tool side is provided, the inlet pipe 43 and the discharge pipe It is arranged between the branch 44 and the branch pipe 45 having a plurality of transfer path pipe 452 and the branch pipe 45 and the discharge pipe 44 of the inlet pipe 43 and the branch pipe 45 When the pressure formed therein rises by a predetermined value or more, the inlet pipe 43 and the branch pipe 45 includes a relief valve 46 for releasing the pressure.

The inlet pipe 43 is one end is coupled to the supply pump 41 is the input of the pumped clean liquid, the inside is made of an empty tubular shape and can be formed at various angles according to the arrangement position , Measuring means 431 for measuring the flow rate, pressure, speed and the like of the clean liquid transferred to one side is coupled.

In addition, the inlet pipe 43 may further include an on / off valve 432 for controlling the flow of the clean liquid transferred through the inside. The internal structure and operation relationship of the on-off valve 432 is a conventional one, and the detailed description and illustration of the internal structure will be omitted.

The discharge pipe 44 is one end is coupled to the cutting oil discharge port provided in the machine tool, the inside is made of a hollow tube shape, may be provided with an on-off valve 432 disposed in the inlet pipe 43 described above.

The branch pipe 45 is disposed between the inlet pipe 43 and the discharge pipe 44 and has a plurality of transfer path tubes (), and the cleaning liquid supplied through the inlet tube 43 is transferred to the transfer path tube ( ) Can be transferred to various positions.

The branch pipe 45 includes a main body 451 consisting of a hollow body and a plurality of transfer path pipes 452 having one end coupled to the main body 451.

The relief valve 46 is disposed at a position where the end of the branch pipe 45 and the end of the discharge pipe 44 are in contact with each other so that the internal pressure of the discharge pipe 44 and the inlet pipe 43 rises by a predetermined level or more to open the pressure. It is to solve.

Ordinarily, the relief valve is a pressure control valve that opens when the pressure exceeds the set pressure and maintains the pressure in the circuit at the set value by flowing excess fluid, which may be referred to as a safety valve depending on the purpose of use.

According to the structure and the principle of operation, the relief valve has a direct pressure relief valve in which the pressure acting on the valve is directly balanced with the spring force, and the secondary pressure chamber is installed so that the valve can be operated by the difference between the secondary pressure and the circuit pressure. It is classified as balance piston type relief valve to control displacement.

In the present invention, there is no particular limitation on the structure of the relief valve.

As described above, the relief valve 46 is opened when the internal pressures of the inflow pipe 43 and the branch pipe 45 are equal to or greater than the set pressure, which will be described in more detail as follows.

When the operation of the machine tool is stopped while the supply pump 41 is operating, the internal pressure of the inlet pipe 43 and the branch pipe 45 rises. This is because the pressure is increased by supplying the clean liquid to the inlet pipe 43 and the branch pipe 45 by continuously operating the supply pump 41.

At this time, the relief valve 46 is opened to discharge the pressure formed in the discharge pipe 44 to the outside.

In addition, when the machine tool is operated while the supply pump 41 is operating, the cleaning liquid supplied from the supply pump 41 is moved to the machine tool side.

According to the present invention made as described above, the waste oil is removed from the contaminant containing impurities after use, and the chips are separated, and the cutting oil buried in the chips is separated through a centrifuge and stored in a clean liquid storage space.

Then, when the clean liquid is required in the machine tool, the clean liquid is pumped and supplied through the supply pump in the clean liquid storage space.

In this process, a relief valve is provided to prevent the pipe from being damaged or broken by increasing the internal pressure of the pipe while the machine tool is stopped while the supply pump is operating. Thus, a high pressure can be discharged to the outside to prevent damage to the pipe. .

On the other hand, the circulation pump 14 for communicating with the clean liquid storage space 13 of the base 10 to prevent corruption by circulating the clean liquid is further provided.

When the distance between the cleaning liquid storage space 13 and the machine tool is far or the storage time of the cleaning liquid stored in the storage space becomes long according to the capacity of the cleaning liquid storage space 13, bacteria may grow, and the circulation pump By circulating the clean liquid stored in the clean liquid storage space 13 through 14 to prevent the growth of bacteria to prevent corruption.

Furthermore, the base 10 is further provided with a precipitation cooler 17 for lowering the temperature of the cleaning liquid, which has a problem that bacteria grow and multiply when the cleaning liquid rises above a predetermined temperature during the movement.

Therefore, the cleaning liquid of the process to be supplied must be prevented from rising above the limit temperature.

In this case, the limit temperature is at most 36 ° C, preferably 24 to 30 ° C, in order to prevent the growth and growth of bacteria.

To this end, in the present invention, the precipitation cooler 17 is provided, and the precipitation tank 171 in which the supplied clean liquid stays for a predetermined time, and a temperature maintaining means for maintaining a constant temperature of the precipitation tank 171. 172.

The sedimentation tank 171 may be formed of an enclosure having an area in which a predetermined amount of clean liquid is stored, and the temperature maintaining means 172 may be configured as a cooling bar whose operation is controlled through an applied power and a signal. .

Through the precipitation cooler 17, the cleaning liquid can be supplied at a temperature at which bacteria propagation and proliferation are limited, thereby improving the working environment and reducing the occurrence of odor, and at the same time preventing the occurrence of dermatitis, even if splashed on the operator's skin. It can work.

In the present invention as described above has been described by the specific embodiments, such as specific components and limited embodiments and drawings, but this is provided to help a more general understanding of the present invention, the present invention is not limited to the above embodiments. For those skilled in the art, various modifications and variations are possible from these descriptions.

Therefore, the spirit of the present invention should not be limited to the described embodiments, and all of the equivalents and equivalents of the claims, as well as the appended claims, will belong to the scope of the present invention. .

1: cutting oil recycling and recycling supply apparatus according to the present invention
10: base
11: bulkhead 12: contaminant storage space
13: clean liquid storage space 14: circulation pump
15: water level sensor 16: top plate
17: sedimentation cooler 18: defoamer supply means
20: impurity removal module
21: transfer pump 22: centrifuge
30: clean liquid transfer module
31: transfer pipe
40: clean liquid supply module
41: supply pump 42: transfer piping
43: inlet pipe 44: discharge pipe
45: branch pipe 46: relief valve

Claims (7)

The partition 11 is partitioned into a plurality of spaces through the partition 11, and a part of the partitioned space includes a contaminant storage space 12 in which a contaminant containing impurities such as a chip is stored. The other part of the space is the base 10 is formed with a clean liquid storage space 13 is stored a clean liquid of the purified state;
An impurity removal module 20 for removing impurities having different specific gravity from the pollutant stored in the pollutant storage space 12; and
A clean liquid transfer module 30 communicating with the impurity removal module 20 to transfer the clean liquid from which impurities are removed to the clean liquid storage space 13;
Includes a clean liquid supply module 40 for supplying the clean liquid stored in communication with the clean liquid storage space 13 to the machine tool side,
The clean liquid supply module 40,
A supply pump 41 for supplying a clean liquid stored in the clean liquid storage space 13;
One end is coupled to the supply pump 41 and the other end is coupled to the cutting oil outlet disposed on the machine tool side includes a conveying pipe 42 for conveying the clean liquid,
The transfer pipe 42,
An inlet pipe 43 coupled to the supply pump 41;
A discharge pipe 44 coupled to the cutting oil discharge port,
A branch pipe 45 disposed between the inlet pipe 43 and the discharge pipe 44 and having a plurality of transfer path pipes 452;
It is disposed in the discharge pipe 44 includes a relief valve 46 which is opened and closed according to the pressure change according to the operation of the supply pump 41 and the operation of the machine tool,
The relief valve 46,
The supply pump 41 is operated,
The machine tool is open when not in operation,
Relieve the pressure formed in the discharge pipe 44,
The supply pump 41 is operated,
The machine tool is closed during operation,
Supplying the clean liquid supplied through the supply pump 41 to the machine tool side,
In the base 10,
A sedimentation cooler 17 is further provided to lower the temperature of the cleaning liquid transferred when the relief valve 46 is opened.
The precipitation cooler 17,
A settling tank 171 in which the supplied clean liquid stays for a predetermined time;
Including a temperature maintaining means 172 for maintaining a constant temperature of the precipitation tank 171,
Keep the temperature of the cleaning liquid at 24 ~ 30 ℃,
The impurity removal module 20,
Transfer pump 21 for pumping to transfer the contaminated liquid stored in the contaminated liquid storage space 12,
A centrifuge 22 for separating the cutting oil from the chips contained in the transferred contaminants,
In the clean liquid storage space 13,
Further provided with a circulation pump 14 for circulating the stored clean liquid,
The cleaning liquid storage space 13 is further provided with a water level sensor 15 for checking the level of the stored cleaning liquid,
In the base 10,
Defoamer supply means for supplying a defoamer (消泡劑) to the contaminant storage space 12 is further provided,
The defoamer supply means 18,
Defoamer storage tank (181),
Defoamer for supplying the antifoam stored in the antifoam storage tank 181 to the contaminant storage space 12 in conjunction with at least one of the amount of the contaminant introduced into the contaminant storage space 12 or the input time of the contaminant solution. Coolant recovery and recycling supplies, characterized in that it comprises a timer (182). delete delete delete delete delete delete

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