KR100826294B1 - Clean water supply and circulation system for wire cutting machine - Google Patents

Abstract

A system for automatically supplying and circulating distilled water for a wire cutting machine is provided to feed distilled water approximating to ultra pure water by removing impurities contained in a processing solution. A system for automatically supplying and circulating distilled water for a wire cutting machine comprises a feeding section(100), a storage section(200), and a circulating section(300). The feeding section includes a first micro filter section(110) for filtering water introduced into the system, an activated carbon filter section(120) for filtering purified water, a reverse osmosis filter section(130) for filtering pure water, a first ultraviolet sterilizer(140) for sterilizing the pure water using ultraviolet ray, and a first ion exchange resin filter section(150). The storage section includes a clean water tank(210) and a dirt water tank(220). The circulating section includes a second micro filter section(310) for filtering dirt water, a first hollow fiber membrane filter(320), a second ion exchange resin filter section(340), a second ultraviolet sterilizer(350), and a second hollow fiber membrane filter(360) for feeding the pure water to the clean water tank.

Description

Clean Water Supply and Circulation System for Wire Cutting Machine}

1 is a perspective view showing a wire cutter.

Figure 2 is a view showing a schematic structure of the automatic distilled water supply and circulation system for a wire cutter according to the present invention.

3 is a view showing a schematic structure of an automatic distilled water supply and circulation system for a wire cutter according to another embodiment of the present invention.

<Explanation of symbols for main parts of the drawings>

100: supply unit 110: first micro filter unit

111: first boost pump 120: activated carbon filter unit

130: reverse osmosis membrane filter unit 131: wastewater drain

140: first ultraviolet sterilizer 150: first ion exchange resin filter unit

160: solenoid valve 200: equipment storage tank

210: water reservoir 220: waste water reservoir

221: sewage pump 230: water level sensor

310: second micro filter unit 311: second boosting pump

320: first hollow fiber membrane filter unit 330: storage tank

331: pure water pump 340: second ion exchange resin filter unit

350: second ultraviolet sterilizer 360: second hollow fiber membrane filter unit

400: control box

The present invention relates to an automatic supply and circulation system for distilled water for wire cutters, and more particularly, to an automatic supply and circulation system for distilled water for wire cutters, which can improve processing accuracy by increasing the specific resistance of water used in the wire cutters. .

The wire cutting machine is a machine that generates electric discharge between the wire and the workpiece while winding the wire with strong tension, and processes it at high temperature. It can process fine processing and complicated shapes that cannot be processed by general machine tools. Machine is suitable for high precision because there is no heat deformation or physical force (cutting, cutting) when processing hard materials which are hard or difficult to cut.

Such a wire cutter requires a processing liquid supply device for supplying a processing liquid to cool the heat generated during discharge. Such processing liquid supply apparatus is classified into spray type and immersion type according to the processing liquid supply method. The spray method is a method of spraying the processing liquid to the wire electrode and the workpiece to be processed, and the immersion type is a method of dipping the workpiece by storing the processing liquid in the processing liquid tank. Most of the processing liquid uses water. Purity water is used in consideration of performance improvement of wire cutting machine, processing precision, and lifespan.

Conventional wire cutters often use tap water by filtration at the time of processing liquid supply. In this case, the filtering device used is a simple filter to supply purified water through simple filtration, that is, removing residues and suspended solids. The purified water contains impurities such as chlorine, oxides, heavy metals or ionic substances. There was a problem of shortening the life of the cutting machine by corroding the electrode, the electrode fixing part and the like. In particular, the ionic material interferes with the discharge generated at the electrode and the workpiece at the processing site, and lowers the resistivity of water, thereby causing a spark discharge phenomenon. This spark discharge has a problem of lowering the machining accuracy because the cutting surface is etched. In addition, the contaminants generated after processing are mostly discharged without being recycled. This contaminant contains the above impurities as it is to be discharged by waste treatment, there is a problem that causes treatment costs and environmental pollution, there is a problem that the consumption of water is large.

The present invention has been made to solve the above problems, an object of the present invention to provide a distilled water automatic supply and circulation system for supplying distilled water close to the ultrapure water by removing impurities contained in the processing liquid There is.

Another object of the present invention is to provide a distilled water automatic supply and circulation system for a wire cutter that can improve the life and processing precision of the equipment.

In order to achieve the above object, the present invention, the first micro filter unit for filtering the incoming raw water, the activated carbon filter unit for adsorbing the filtered water filtered by the first micro filter unit, and the activated carbon filter The reverse osmosis membrane filter unit for filtering the pure water adsorbed and filtered by the unit, the first ultraviolet sterilizer for sterilizing the pure water filtered by the reverse osmosis membrane filter unit, and the pure water sterilized by the first ultraviolet sterilizer to remove the electrolyte. A supply unit comprising a first ion exchange resin filter unit; An equipment storage tank partitioned into a fresh water container through which the pure water filtered from the first ion exchange resin filter part of the supply part is supplied, and a waste water container from which the pure water is supplied to a wire cutter to recover the processed sewage; A second micro filter unit for filtering the sewage pumped by the pumping of the sewage pump from the rain tank of the equipment storage tank, a first hollow fiber membrane filter unit for filtering the purified water filtered by the second micro filter unit, and the first A storage tank for storing the pure water filtered by the hollow fiber membrane filter unit, a second ion exchange resin filter unit for filtering the pure water pumped by the pure water pump from the reservoir to remove the electrolyte, and filtration from the second ion exchange resin filter unit A circulation unit including a second ultraviolet sterilizer for sterilizing the purified pure water with ultraviolet rays and a second hollow fiber membrane filter unit for filtering the sterilized pure water and supplying the filtered pure water to the fresh water tank of the equipment storage tank; Characterized in that comprises a.

In addition, the filtration size of the first micro-filter unit of the present invention is characterized in that less than 1 micron.

In addition, the second micro-filter unit of the present invention is characterized in that the micro-filter unit having a filtration particle size of 5 microns or less and the micro-filter unit having a filtration particle size of 1 micron or less are connected in series.

In addition, the reverse osmosis membrane filter unit of the present invention is characterized in that it is provided in plurality and connected in parallel.

In addition, the first ion exchange resin filter unit or the second ion exchange resin filter unit of the present invention is characterized in that it is provided in plurality and connected in series.

In addition, the present invention is characterized in that the pure water from which the electrolyte is removed by the first ion exchange resin filter unit is stored in each of the equipment storage tank of the plurality of wire cutters.

In addition, the rear end of the first ion exchange resin filter of the present invention is characterized in that it is provided with a solenoid valve for interlocking with the water level sensor installed in the fresh water reservoir of the equipment storage tank of the wire cutter supply and cut off the purified water.

In addition, the first and second step-up pumps for boosting and pumping the purified water reduced by filtration of the first micro filter part and the second micro filter part at the rear ends of the first micro filter part and the second micro filter part of the present invention. Each of which is further provided.

In addition, the present invention is further provided with a control box for controlling the operation of the solenoid valve and the operation of the pure water pump and the first and second boost pump, the control box for controlling the operation of the sewage pump for pumping sewage from the sewage tank of the equipment storage tank. It is characterized by.

Hereinafter, with reference to the accompanying drawings, a distilled water automatic supply and circulation system for a wire cutter according to the present invention having the configuration as described above will be described in detail.

Figure 1 is an external perspective view showing a wire cutter, Figure 2 is a view showing a schematic structure of the automatic supply and circulation system for distilled water for wire cutting according to the present invention, Figure 3 is a distilled water for a wire cutter of another embodiment according to the present invention The schematic diagram of the automatic supply and circulation system is shown.

As shown, the automatic distilled water supply and circulation system for a wire cutter according to the present invention includes a first micro filter unit 110 for filtering the incoming raw water, and an activated carbon filter unit 120 for adsorption filtering the filtered purified water; Reverse osmosis membrane filter unit 130 for filtering the filtered filtered pure water, the first ultraviolet sterilizer 140 for sterilizing the filtered pure water with ultraviolet rays and the first ion exchange resin filter unit for filtering the sterilized pure water to remove the electrolyte ( Supply unit 100 consisting of 150; Equipment storage tank 200 partitioned into a fresh water tank 210 is supplied with purified water filtered from the first ion exchange resin filter unit of the supply unit 100, and a waste water tank 220 to recover the processed sewage supplied to the wire cutter. ); The second micro filter unit 310 for filtering the pumped sewage from the waste container of the equipment storage tank, the first hollow fiber membrane filter unit 320 for filtering the filtered purified water, and the storage tank 330 for storing the filtered pure water And a second ion exchange resin filter unit 340 for filtering the pure water from the reservoir to remove the electrolyte, a second ultraviolet sterilizer 350 for sterilizing the filtered pure water, and filtering the sterilized pure water. A circulation part 300 including a second hollow fiber membrane filter part 360 supplied to the fresh water tank 210 of the storage tank 200; It is made, including.

The supply unit 100 includes a first micro filter unit 110, an activated carbon filter unit 120, a reverse osmosis membrane filter unit 130, a first ultraviolet sterilizer 140, and a first ion exchange resin filter unit 150. )

The first micro filter 110 serves to filter the introduced raw water as the primary. The first micro filter unit 110 removes fine impurities such as dust, debris, various precipitates and suspended solids contained in raw water. It is preferable that the filtration particle size of the first micro filter unit 110 is 1 micron or less. The rear end of the first micro filter unit 110 is preferably further provided with a first boost pump 111 for boosting and pumping the purified water reduced by the filtration of the first micro filter unit 110. It is preferable that the solenoid valve 112 which is operated in conjunction with the first boosting pump 111 is further provided at the rear end of the first boosting pump 111.

The activated carbon filter 120 serves to adsorb and filter the purified water filtered by the first micro filter 110. The activated carbon filter unit 120 includes activated carbon fibers made of activated carbon or chemical fibers prepared by steam treatment of charcoal at a high temperature, insoluble organics, residual chlorine, volatile organic compounds (VOCs), synthetic detergents, and turbidity. It serves to remove the back.

The reverse osmosis membrane filter unit 130 serves to filter the pure water adsorbed and filtered by the activated carbon filter unit 120. Reverse osmosis membrane is a microporous filtration membrane with a pore size of 0.0001㎛ and removes most heavy metals, ionic substances, microorganisms and turbidity-inducing substances. Since only part of the raw water is used to extend the filter life or improve the efficiency, most of the water is discharged as it is through the wastewater drain 131. Since the amount of purified water filtered by the reverse osmosis membrane filter unit 130 is small, it is preferable to be provided in plural and connected in parallel as shown in FIG. 3 to increase the amount of purified water.

The first ultraviolet sterilizer 140 serves to suppress various bacteria contained in the pure water and remove odors by sterilizing the pure water filtered by the reverse osmosis membrane filter unit 130 with ultraviolet rays.

The first ion exchange resin filter unit 150 serves to remove the electrolyte by filtering pure water sterilized by the first ultraviolet sterilizer 140. At this time, since the electrolyte is not evenly distributed during the wire cutting discharge processing, it is important to effectively remove it because the processing accuracy is lowered. Accordingly, in the present invention, it is preferable that the first ion exchange resin filter unit 150 is provided in plural numbers and connected in series to efficiently remove the electrolyte that most affects the wire cutting discharge processing. The first ion exchange resin filter unit 150 serves to supply the purified water from which the electrolyte is removed to the fresh water tank 210 of the wire cutting machine 1 equipment storage tank 200.

As described above, the present invention can reduce the ionization degree of the water supplied to the wire cutting machine, thereby increasing the specific resistance of the water, preventing spark spreading and making the cutting surface even, thereby improving processing accuracy.

The first ion exchange resin filter unit 150 of the present invention ion-exchanged the purified water filtered by the micro filter unit 10, the activated carbon filter unit 120 and the reverse osmosis membrane filter unit 130 to remove the electrolyte Since the ion resin is greatly reduced (about 70%) is effective. In addition, the rear end of the first ion exchange resin filter unit 150 is interlocked with the water level sensor 230 installed in the fresh water tank 210 of the wire cutting machine (1) equipment storage tank 200 to supply and block the purified water It is preferable that the solenoid valve 160 is provided.

In the fresh water tank 210 of the equipment storage tank 200 is provided with a water level sensor 230 to detect the level of pure water stored in the fresh water tank 210 of the equipment storage tank 200, when the water level is low If the system is continuously operated and at a certain level, the system is stopped to prevent the water from overflowing. The water level sensor 230 serves to supply the pure water supplied from the supply unit 100 to the fresh water tank 210 of the equipment storage tank 200 before the wire cutting discharge processing, from the supply unit 100 during processing The supplied pure water and the pure water circulated from the circulation part 300 are supplied to the fresh water container 210 of the equipment storage tank 200 to replenish the exhausted processing liquid.

The equipment storage tank 200 is divided into the fresh water container 210 and the sewage container 220.

The fresh water tank 210 is supplied with purified water filtered from the first ion exchange resin filter 150 of the supply unit 100.

The sewage tank 220 is purified water is supplied from the fresh water tank 210 to the wire cutting machine to recover the processed sewage.

The circulation unit 300 includes a second micro filter unit 310, a first hollow fiber membrane filter unit 320, a storage tank 330, a second ion exchange resin filter unit 340, and a second ultraviolet sterilizer. 350 and the second hollow fiber membrane filter unit 360.

The second micro filter unit 310 serves to filter the sewage pumped by the pumping of the sewage pump 221 from the sewage tank 220 of the equipment storage tank 200. The second micro filter unit 310 plays the same role as the first micro filter unit 110 and includes fine particles such as dust, debris, various sediments and suspended solids contained in the sewage pumped by the pump of the sewage pump 221. Impurities are removed. The second micro filter unit 310 is preferably connected in series with a micro filter unit having a filtration particle size of 5 microns or less and a micro filter portion having a filtration particle size of 1 micron or less. It is preferable that a second boosting pump 311 is further provided at a rear end of the second micro filter unit 310 to boost and pump the purified water reduced by filtration of the second micro filter unit 310.

The first hollow fiber membrane filter unit 320 serves to filter the purified water filtered by the second micro filter unit 310. The first hollow fiber membrane filter (UF Filter) removes general bacteria and particulate impurities.

The storage tank 330 stores the pure water filtered by the first hollow fiber membrane filter unit 320.

The second ion exchange resin filter unit 340 serves as the first ion exchange resin filter unit 150, and filters the pure water pumped by the pure water pump 331 from the reservoir 330 to form an electrolyte. Serves to remove it.

The second ultraviolet sterilizer 350 sterilizes the pure water from which the electrolyte is removed from the second ion exchange resin filter 340.

The second hollow fiber membrane filter unit UF filter 360 serves as the first hollow fiber membrane filter unit 320 and filters the purified water sterilized from the second ultraviolet sterilizer 350 to filter the purified water. It serves to supply to the sewage tank 220 of the equipment storage tank 200. Like the first hollow fiber membrane filter unit 320, the second hollow fiber membrane filter unit 360 removes general bacteria and particulate impurities. The rear end of the second hollow fiber membrane filter unit 360 is preferably further provided with a solenoid valve 361 that operates in conjunction with the pure water pump 331.

As described above, the present invention can reduce waste of water by circulating the sewage from the sewage tank 220 of the equipment storage tank 200 and filtering the waste water.

In addition, the present invention is further provided with a control box 400, in addition to the operation of the solenoid valve 160 by the control box 400 is installed on the rear end of the first micro filter unit 110 to boost the first The operation of the boost pump 111 and the second booster pump 311 installed at the rear end of the second micro filter unit 310 to boost the operation, the operation of the pure water pump 331, and the waste water reservoir ( The operation of the sewage pump 221 and the operation of the solenoid valve 160 to pump from the 220 to the circulation unit 300 is controlled.

Figure 3 is a view showing a schematic structure of an automatic distilled water supply and circulation system for another type of wire cutting machine according to the present invention.

As shown, the automatic distilled water supply and circulation system for another type of wire cutting machine according to the present invention has the same configuration as the supply unit 100 and the circulation unit 300, the first ion exchange resin filter unit 150 The pure water from which the electrolyte has been removed is different from each other so as to be stored in the equipment storage tank 200 of the plurality of wire cutters.

In order to increase the efficiency of the system, the purified water from which the electrolyte is removed by the ion exchange resin filter unit of the present invention is preferably stored in each of the equipment storage tanks 200 of the plurality of wire cutters as shown in FIG. 3. In this case, the supply of pure water to each equipment storage tank 200 and the circulation of wastewater from each equipment storage tank 200 are preferably distributed by the distributors 370 and 380.

Distilled water automatic supply and circulation system for the wire cutting machine of the present invention configured as described above can reduce the cleaning operation for preventing corrosion of the wire electrode and the electrode fixing portion and the workpiece by supplying the water to the wire cutting machine close to the ultrapure water. The use of detergents can be reduced, and the time required for this work can be saved by saving time and manpower.

As described above, the present invention is to supply the distilled water close to the ultra-pure water to remove the impurities contained in the processing liquid to prevent corrosion, to extend the life of the equipment, and to reduce the cost by reducing the use of cleaning agents and ion resins And it can reduce the time required for the washing operation has the effect of reducing the manpower. In addition, the ionization degree of the water supplied to the wire cutting machine can be lowered and the specific resistance can be increased to prevent spark spreading and to make the cutting surface even, thereby improving processing accuracy.

Claims (9)

A first micro filter unit for filtering the introduced raw water, an activated carbon filter unit for adsorbing and filtering the purified water filtered by the first micro filter unit, and a reverse osmosis membrane filter for filtering pure water adsorbed and filtered by the activated carbon filter unit A supply unit comprising a first ultraviolet sterilizer for sterilizing the pure water filtered by the reverse osmosis membrane filter unit with ultraviolet rays and a first ion exchange resin filter unit for filtering the pure water sterilized by the first ultraviolet sterilizer to remove the electrolyte; An equipment storage tank partitioned into a fresh water container through which the pure water filtered from the first ion exchange resin filter part of the supply part is supplied, and a waste water container from which the pure water is supplied to a wire cutter to recover the processed sewage; A second micro filter unit for filtering the sewage pumped by the pumping of the sewage pump from the rain tank of the equipment storage tank, a first hollow fiber membrane filter unit for filtering the purified water filtered by the second micro filter unit, and the first A storage tank for storing the pure water filtered by the hollow fiber membrane filter unit, a second ion exchange resin filter unit for filtering the pure water pumped by the pure water pump from the reservoir to remove the electrolyte, and the second ion exchange resin filter unit A circulation unit including a second ultraviolet sterilizer for sterilizing the filtered pure water and a second hollow fiber membrane filter unit for filtering the pure water sterilized by the second ultraviolet sterilizer and supplying the filtered pure water to the fresh water tank of the equipment storage tank; Distilled water automatic supply and circulation system for a wire cutter, characterized in that comprises a. The method of claim 1, The filter particle size of the first micro filter unit is less than 1 micron distilled water automatic supply and circulation system, characterized in that. The method of claim 2, The second micro filter unit is a distilled water automatic supply and circulation system, characterized in that the micro-filter unit having a filter particle size of 5 microns or less and the micro filter unit having a filter particle size of 1 micron or less in series connection. The method of claim 3, wherein The reverse osmosis membrane filter unit is provided with a plurality of distilled water automatic supply and circulation system, characterized in that connected in parallel. The method of claim 4, wherein The first ion exchange resin filter unit or the second ion exchange resin filter unit is provided with a plurality of distilled water automatic supply and circulation system, characterized in that connected in series. The method according to any one of claims 1 to 5, Automatic supply and circulation system for distilled water for wire cutters, characterized in that the first ion exchange resin filter unit is to remove the electrolyte is stored in the equipment storage tank of the plurality of wire cutters, respectively. The method of claim 6, The rear end of the first ion exchange resin filter unit is provided with a solenoid valve interlocked with a water level sensor installed in the fresh water tank of the equipment storage tank of the wire cutting machine to supply and block purified water, and automatically supply and circulate distilled water for the wire cutting machine. system. The method of claim 7, wherein At the rear ends of the first micro filter unit and the second micro filter unit, first and second boost pumps respectively boosting and pumping the purified water reduced by filtration of the first micro filter unit and the second micro filter unit are further provided. Distilled water automatic supply and circulation system for a wire cutter. The method of claim 8, A control box for controlling the operation of the solenoid valve and the operation of the pure water pump and the first and second boost pumps, the control box for controlling the operation of the sewage pump for pumping sewage from the sewage reservoir of the equipment storage tank is further provided. Automatic supply and circulation system of distilled water for wire cutting machine.

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