KR20230150582A - High-capacity recycling system and method for abrasives used in waterjet processing - Google Patents

Abstract

The present invention provides a large-capacity recycling system and method for abrasives used in waterjet processing, which can recover a large amount of abrasives used when processing a workpiece using a waterjet processing system at a high recovery rate and regenerate them into high-quality, reusable abrasive products. to provide. The large-capacity regeneration method of abrasives used in waterjet machining according to the present invention involves inputting abrasives (waste abrasives) generated after cutting of a processing object using a waterjet machining system into a primary sorter to remove the large particle size contained in the abrasives. A first sorting step in which the base material and foreign substances are filtered out and selected, and the abrasives selected through the first sorter are put into the first washing machine and the abrasives are rotated upward and the abrasives are washed using washing water. and a secondary washing step of putting the abrasives that have been cleaned through the first washing machine into the secondary washing machine and washing them with washing water while simultaneously applying vibration to the cleaned abrasives to dehydrate them, and washing and dehydrating the abrasives through the secondary washer. A drying step in which the completed abrasive is put into a dryer and the abrasive is rotated forward and dried using hot air, and the abrasive dried through the dryer is put into a secondary sorter to filter out foreign substances and cutting materials from the abrasive, while waterjet processing. The system is characterized by including a secondary screening step in which reusable coarse-grained abrasives and non-reusable fine-grained abrasives are separated and selected.

Description

High-capacity recycling system and method for abrasives used in waterjet processing}

The present invention relates to an abrasive regeneration system that can regenerate abrasives (waste abrasives) used in the process of cutting or cutting a processing object using a waterjet processing system into recyclable abrasives. More specifically, it relates to a waterjet processing system. The present invention relates to a large-capacity recycling system and method for abrasives used in waterjet processing, which can recover abrasives used in processing at a high recovery rate and regenerate them in large quantities into high-quality, reusable abrasive products.

In general, a waterjet processing system refers to a processing system used for cutting or cutting processing of a workpiece by intensively spraying water increased at ultra-high pressure onto the cutting area of the workpiece (processing object) at high pressure. The main abrasive used with water in this waterjet processing system is garnet (garnet), and this garnet is entirely dependent on imports.

In this way, waterjet processing technology, which processes workpieces using water, can cut almost all types of metals or non-metals without additional secondary processing without thermal deformation or creation of oxides, and does not generate toxic gases or dust during processing. In addition, there are many advantages such as no burrs at the cutting area, so the application of the technology has recently been gradually expanding to various industrial fields.

Looking briefly at the waterjet processing system according to the prior art, the waterjet nozzle, which is a processing unit that processes the workpiece (object to be processed) by spraying water containing abrasives at high pressure, follows a predetermined cutting trajectory programmed by a computer. It is installed so that the position can be moved, and has a structure in which an abrasive supply tank is connected so that abrasives for cutting or cutting hard materials such as metals such as iron, non-ferrous metals, or marble can be separately introduced.

In addition, on the upper surface of the sump within the waterjet processing system, a work table with a grid-shaped drainage structure is installed to enable seating, placement, and processing of processing materials and to allow water sprayed from the waterjet nozzle to drain smoothly into the sump. do.

In addition, in the sump of the waterjet processing system, when cutting or cutting processing of the processing material using the waterjet processing system, the high-pressure water sprayed from the waterjet nozzle is automatically stored and stored after being used for processing the processing material. It is configured to automatically treat wastewater by overflowing outside the sump.

In this case, the water stored in the water sump is wastewater contaminated by waterjet processing, and the cutting base material of the work material generated during cutting or cutting of the work material accumulates in the water sump. In addition, abrasives in the form of broken particles generated by collision with the workpiece during the process of performing waterjet processing of the workpiece by injecting the abrasive into the waterjet nozzle side accumulate on the floor inside the water sump.

In this way, during waterjet machining, the abrasives used in the waterjet machining operation and the cutting base material generated during the machining process of the machining material precipitate inside the sump and accumulate on the bottom of the sump, forming a slurry mixed with water. The wastewater (supernatant) generated during processing is treated as an overflow and reused through a separate wastewater treatment system. However, in the sediment, abrasives and cutting base materials in the form of small dust particles exist in suspended solids (foreign substances). It may cause environmental pollution.

In addition, the amount of slurry accumulated in the sump during the waterjet processing process increases in proportion to the processing time of the processed material, so it must be removed periodically or at any time. Conventionally, after all wastewater stored in the sump is drained and treated, the operator cleans the sump. The process was to go into the machine and scoop out and remove the slurry one by one, and even though cutting materials, including expensive abrasives, could be recovered from the slurry and fully recycled, it was common to discard all of the expensive abrasives. In this way, conventionally, during the waterjet processing process, workers manually scoop out and dispose of the slurry containing expensive abrasives accumulated in the water sump. Therefore, workability and work efficiency are reduced due to the inconvenience and inconvenience of slurry disposal, and the slurry There was a problem of low economic feasibility as the expensive abrasives included were disposed of as is.

This is primarily due to the fact that conventional waterjet processing systems are all dependent on imports, and only installation materials for building waterjet processing systems, that is, installation materials in the form of standard products, are imported into the country, assembled, and used. , there is no introduction of a separate processing system for recycling garnet, which is a cutting material and abrasive material.

In other words, the conventional waterjet processing system was an imported product and did not have separate facilities to recover and recycle garnet (abrasives) applied in various particle sizes, so once used abrasives were all expensive and depended on imports. Even though it is an imported product, it is all disposed of, which reduces economic feasibility and causes environmental pollution.

Meanwhile, in the waterjet processing system, various efforts are being made to solve the problems mentioned above. One example is Patent Publication No. 10-2001-0113616 (“Recovery and regeneration system of abrasives used in waterjet”) ; hereinafter referred to as “First Technology”), Patent Registration No. 10-0865958 (“Sludge recovery device and method for water jet”; hereinafter referred to as “Second Technology”), Patent Registration No. 10-1305936 Various technologies have been proposed (“eco-friendly waterjet processing system”; hereinafter referred to as “third technology”). However, the various technologies proposed above are less efficient and less practical in recycling abrasives, so they are currently not used in the field. The reality is that it is not being utilized at all.

In other words, the first technology mentioned above is a technology for recovering and recycling abrasives, but it has the disadvantage of being less efficient in recovering abrasives and the abrasives are damaged during the transfer process because the abrasives are transported through a screw. In addition, the second technology is a technology that simply separates water and sludge using a filter and disposes of the filter in which the sludge is stored separately. The second technology corresponds to a technology that simply separates the sludge from water and recovers and disposes of it. However, it is not a technology that can recycle expensive abrasives. In addition, the third technology is a technology that can recover and recycle abrasives used in waterjet processing, but is not a technology that can recover and recycle abrasives at a high recovery rate at the level consumed in waterjet processing, and requires an individual abrasive recycling system. It is a technology that is practically unusable in the field due to its high construction cost. Therefore, there is an urgent need for an abrasive recycling method that can recover expensive abrasives used in waterjet processing at a high recovery rate and regenerate them in large quantities into high-quality, recyclable abrasive products.

Republic of Korea Patent Publication No. 10-2001-0113616 (December 28, 2001) Republic of Korea Patent Registration No. 10-0865958 (2008.10.23) Republic of Korea Patent Registration No. 10-0305936 (2013.09.03)

The technical problem to be solved by the present invention is to enable smooth recovery and recycling of abrasives used in waterjet machining, and to effectively separate, recover and recycle abrasives used in waterjet machining and cutting materials generated during machining. The purpose is to provide a high-capacity recycling system for abrasives used in waterjet processing.

Another technical problem to be solved by the present invention is to increase the operational efficiency of waterjet processing equipment, pursue economic feasibility, and use waterjet processing to minimize environmental pollution by significantly reducing waste generated during the processing process. The purpose is to provide a large-capacity recycling system for used abrasives.

A large-capacity recycling system for abrasives used in waterjet machining according to an embodiment of the present invention to solve the above problems is a primary storage system for storing abrasives (waste abrasives) generated after cutting of a processing object using a waterjet machining system. A tank, a primary sorter for selecting recyclable abrasives by filtering out cutting materials and foreign substances with large particle sizes from the abrasives input after being transferred from the primary storage tank, and rotating the abrasives input from the primary sorter upward while rotating them to the outside. A primary washing machine that removes foreign substances adsorbed on the abrasives by first washing them with washing water supplied from , a secondary washing machine that secondarily washes and dehydrates the abrasives input after discharge from the primary washing machine with washing water and discharges them to the outside; A secondary storage tank that stores the abrasives introduced after being transferred from the secondary washing machine, a dryer that rotates and transfers the abrasives introduced after being discharged from the secondary storage tank while drying them using hot air, and foreign matter from the abrasives introduced after being transferred from the dryer. and a secondary sorter that filters the cutting base material while simultaneously sorting the coarse-grained abrasives that can be reused in the waterjet processing system from the fine-grained abrasives that cannot be reused, and stores the recyclable abrasives that are finally sorted in the secondary sorter, and stores the stored recyclable abrasives. It is characterized by including a tertiary storage tank for discharging the abrasive material for packaging in the form of a final product.

Here, the abrasive large-capacity recycling system may further include a filtration tank that filters floating foreign substances contained in the washing water used in the primary and secondary washing machines to generate usable recycled water.

In addition, at least one of the primary to tertiary storage tanks includes an abrasive storage tank having a 'V'-shaped cross-sectional structure with open upper and lower ends, and a vibration motor for applying vibration to the abrasive storage tank. , A dual timer may be installed in the vibration motor to control the amount of abrasive discharged by setting the timer time differently depending on the viscosity of the abrasive added to the abrasive storage tank.

In addition, the primary cleaner is inclined upwardly from the inside to the outside so that it can be cleaned and discharged while rotating and transferring the abrasive to the top through a rotating screw with the lower part submerged below the water surface of the cleaning water filled inside. It may include an inclined screw to be installed.

In addition, inside the secondary sorter, a plurality of mesh plates are installed in a multi-stage structure, spaced apart at regular intervals in the vertical direction, and the mesh plate located at the bottom has a smaller mesh size than the mesh plate located at the top. It can be.

On the other hand, the large-capacity regeneration method of abrasives used in waterjet processing according to the present invention involves feeding abrasives (waste abrasives) generated after cutting processing of a processing object using a waterjet processing system into a primary sorter to determine the particle size contained in the abrasives. A first sorting step in which large cutting materials and foreign substances are filtered out and sorted, and the abrasives selected through the first sorter are put into the first washing machine and the abrasives are rotated upward and the abrasives are washed using cleaning water. A cleaning step, a secondary cleaning step of putting the abrasives that have been cleaned through the first washing machine into a secondary washing machine and washing them with washing water, and applying vibration to the cleaned abrasives to dehydrate them, and washing and A drying step in which the dehydrated abrasive is put into a dryer and the abrasive is rotated forward and dried using hot air, and the abrasive dried through the dryer is put into a secondary sorter to filter out foreign substances and cutting materials from the abrasive. The waterjet processing system is characterized in that it includes a secondary selection step in which coarse-grained abrasives that can be reused and fine-grained abrasives that cannot be reused are separated and selected.

Here, in the first sorting step, the amount of abrasive input into the first sorter can be adjusted depending on the viscosity of the abrasive.

In addition, in the first cleaning step, the abrasive located below the surface of the cleaning water inside the first washing machine can be washed by rotating and transferring the abrasive material upward using an inclined screw.

In addition, in the secondary sorting step, a plurality of mesh plates installed in a multi-stage structure inside the secondary sorter can be used to separate coarse-grained abrasives that can be reused in the waterjet processing system and fine-grained abrasives that cannot be reused.

According to the large-capacity recycling system and method for abrasives used in waterjet processing according to the present invention, expensive abrasives used in waterjet processing can be smoothly and easily recovered and recycled at a high recovery rate through a series of continuous processes, It is useful to effectively separate the cutting materials generated during waterjet processing from the abrasives used in waterjet processing and recover them at a high recovery rate.

In addition, the present invention can pursue economic efficiency for waterjet processing equipment by allowing expensive abrasives used once to be reused and recycled without discarding them as in the past, and the contaminated water and abrasives used in waterjet processing can be separated from each other. By recovering and recycling, the generation of waste can be significantly reduced, making it useful for resource recycling.

In addition, the present invention has the advantage of pursuing economic efficiency and practicality by increasing the recyclability of abrasives because it can build a large-capacity abrasive recycling system that can actually supply a large amount of reusable abrasives in a waterjet processing system.

In addition, by further subdividing the selection process and cleaning process of the abrasive used in waterjet processing, excellent quality abrasives that can be reused according to the size of the abrasive can be obtained, and the cutting power of the regenerated abrasive is restored to the level before use, making it possible to use the previously proposed abrasive. It has the advantage of achieving superior cutting ability over the first and third technologies.

In addition, since the abrasives used in waterjet processing can be classified and recovered into coarse and fine-grained abrasives that can be recycled by particle size, the recovered coarse-grained abrasives can be reused in waterjet processing, and the fine-grained abrasives can be used for use other than waterjet processing. It has the advantage of being recyclable in processing processes, such as semiconductor processing or glass processing. In addition, since the cleaning water used in the cleaning process of abrasives can be filtered through a separately provided filtration tank to obtain recyclable reclaimed water, there is an advantage in that the degree of recycling of resources can be increased more than the first and third technologies proposed previously. .

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description below.

1 is a diagram showing the overall system configuration of a large-capacity recycling system for abrasives used in waterjet processing according to the present invention.
Figure 2 is a detailed view showing the detailed structure of the primary storage tank of the large-capacity recycling system for abrasives according to the present invention.
Figure 3 is a detailed view showing the dual timer structure connected to the vibration motor of the primary storage tank.
Figure 4 is an enlarged detailed view of the primary sorter and primary washer portion of the large-capacity recycling system for abrasives according to the present invention.
Figure 5 is a detailed view showing the detailed structure of the primary sorter of Figure 4.
Figure 6 is a plan view showing a mesh plate mounted inside the primary sorter of Figure 5.
Figure 7 is a detailed view showing the detailed structure of the primary washing machine of Figure 4.
Figure 8 is a detailed view showing the detailed structure of the secondary cleaner in the large-capacity recycling system for abrasives according to the present invention.
Figure 9 is an enlarged detailed view of the secondary storage tank and dryer portion in the large-capacity recycling system for abrasives according to the present invention.
Figure 10 is a detailed view showing the detailed structure of the dryer shown in Figure 9.
Figure 11 is an enlarged detailed view of the secondary sorter and the tertiary storage tank in the large-capacity recycling system for abrasives according to the present invention.
Figure 12 is a detailed view showing the syntax structure of the secondary sorter shown in Figure 11.
Figure 13 is a flowchart sequentially showing a large-capacity regeneration method of abrasives used in waterjet processing according to the present invention.

The foregoing and additional inventive aspects are embodied through embodiments described with reference to the accompanying drawings. However, the embodiments described below are merely illustrative and are not intended to limit the scope of the present invention to the described embodiments.

In addition, the components of each embodiment may be combined in various ways within or between embodiments unless otherwise stated or contradictory to each other, and in explaining the present invention, detailed descriptions of related known functions or components are required. If it is judged that it may unnecessarily obscure the gist of the present invention, the detailed description will be omitted.

And, when a part "includes" a certain component, this means that it necessarily includes this component regardless of other components, and does not mean to exclude the possibility of including other components.

In addition, the overall process diagram shown in the drawings is merely an example to obtain the most desirable results in carrying out the present invention, and of course, other processes may be added or some processes may be deleted.

Preferred embodiments of the present invention will be described with reference to the accompanying drawings as follows. Through this detailed description, the purpose and configuration of the present invention and its characteristics will be better understood.

First, Figure 1 shows the overall equipment configuration for a large-capacity recycling system for abrasives used in cutting or cutting processing of a processing object (processing material) using a waterjet processing system according to the present invention.

Referring to FIG. 1, the large-capacity recycling system 100 for abrasives used in waterjet processing according to the present invention can recycle abrasives (waste abrasives) used in the cutting or cutting process of a processing object using a waterjet processing system. It is an abrasive regeneration system that can be reproduced in large quantities in the form of abrasive products of as large a capacity as possible, including a primary storage tank (110), a primary conveyor (115), a primary sorter (120), a primary cleaner (130), and a secondary cleaner. (140), 2nd conveyor (145), 2nd storage tank (150), dryer (160), 3rd conveyor (165), 2nd sorter (170), 4th conveyor (175), 3rd storage tank ( 180) are arranged sequentially, and the abrasives (waste abrasives) used in waterjet processing of processing objects are selected by particle size, and through a washing and drying process, can be mass-produced as high-quality, recyclable abrasive products. There is a characteristic in that it has been made so.

Figure 2 shows the detailed structure of the primary storage tank 110 in which abrasives (waste abrasives) used in waterjet processing are stored in the large-capacity abrasive recycling system 100 according to the present invention. And, Figure 3 illustrates the structure of the dual timer 114 connected to the vibration motor 112 installed inside the primary storage tank 110.

Referring to Figures 2 and 3, the primary storage tank 110 contains abrasives used in cutting or cutting processing of a processing object (processing material) using a waterjet processing system and cutting materials generated during processing of the processing object. As a part where waste abrasives are temporarily stored after being recovered from a processing company, the primary storage tank 110 includes an abrasive storage tank 111 having a 'V'-shaped cross-sectional structure with an open top structure, and an abrasive storage tank. It is disposed at the lower part of (111) and includes an outlet 111a through which abrasives are discharged, and a vibration motor 112 installed in contact with one side of the lower part of the abrasive storage tank 111 to apply vibration to the abrasive storage tank 111. It can be.

A mixture containing abrasives (waste abrasives) used during waterjet processing of a processing object and cutting base materials generated during the processing process is introduced into the abrasive storage tank 111, and the abrasives introduced into the abrasive storage tank 111 are discharged from the outlet located at the bottom ( It is discharged through 111a), transported through the primary conveyor 115, and then input into the primary sorter 120.

Here, the abrasive input into the abrasive storage tank 111 is waste abrasive used during waterjet processing. The waste abrasive refers to a mixture containing cutting base material and other foreign substances generated during cutting or cutting of the processing object, which will be described later. It should be noted in advance that the abrasives mentioned in the detailed description of the large-capacity abrasive regeneration system 100 of the present invention refer to waste abrasives containing cutting base materials and foreign substances.

Meanwhile, a vibration motor 112 with a timer function is installed on one lower side of the abrasive storage tank 111 to apply vibration to the abrasive storage tank 111 into which the abrasive material is inserted, thereby controlling the amount of abrasive discharged through the discharge port 111a. do.

A dual timer 114 as shown in FIG. 3 may be connected to the vibration motor 112 to control the discharge amount (processing amount) of abrasives introduced into the abrasive storage tank 111. The dual timer 114 can be attached to the vibration motor 112 or connected to the outside of the vibration motor 112 to control the dual timer 114 from the outside. This dual timer 114 is connected to the vibration motor 112. The operating time can be counted. In this way, the operating time of the vibration motor 112 is individually counted at regular time intervals through the dual timer 112 according to the viscosity of the abrasive stored in the abrasive material storage container 111, and the abrasive material is discharged from the abrasive storage container 111 by operating. The amount of abrasive discharged can be controlled.

When sorting and cleaning abrasives using the large-capacity abrasive regeneration system 100 of the present invention, the viscosity of the abrasives recovered from the processing company is different, so the abrasives are input into the subsequent sorting process in the primary storage tank 110. Problems may arise in which it is difficult to control the quantity of abrasives, and problems may also arise in the cleaning process where it is not easy to clean the abrasives.

Therefore, in the present invention, the dual timer 114 is installed on the vibration motor 112 provided in the primary storage tank 110, and the timer time is set differently depending on the viscosity of the injected abrasive, so that the operating time of the vibration motor 112 is increased. By configuring individual counting by the dual timer 112, it is possible to quantitatively adjust the amount of abrasive input to the subsequent selection process and cleaning process according to the viscosity of the abrasive recovered in the primary storage tank 110. It is designed to ensure stable and efficient operation of the abrasive regeneration system and to maximize the recovery rate of abrasives by making it easy to clean even fine-grained abrasives with high viscosity.

Meanwhile, the abrasives discharged through the lower discharge port 111a of the primary storage tank 110 are transported through the primary conveyor 115 and input into the upper part of the primary sorter 120. In this case, the primary conveyor 115 transports the abrasives discharged from the lower part of the primary storage tank 110 in small portions to reduce the weight of the abrasives and facilitate the transfer of the abrasives, and the primary sorter (120) ) by continuously adding a fixed amount of small-divided abrasives to ensure that the large-capacity regeneration of abrasives performed in the subsequent process is performed smoothly.

Figure 4 shows in detail the primary sorter 120 and primary cleaner 130 in the large-capacity recycling system 100 for abrasives according to the present invention, and Figure 5 shows details of the primary sorter 120 in Figure 4. Figure 6 shows the detailed structure of the mesh plate 123 mounted inside the primary sorter 120, and Figure 7 shows the detailed structure of the primary washer 130.

Referring to FIGS. 4 to 7 , the abrasives discharged from the lower part of the primary storage tank 110 are transported through the primary conveyor 115 and then input into the upper part of the primary sorter 120. In addition, the primary sorter 120 filters out cutting materials and foreign substances with large particle sizes from the abrasives (waste abrasives) that are discharged from the primary storage tank 110, transferred through the primary conveyor 115, and then introduced. Recyclable abrasives can be first selected.

Specifically, as shown in FIG. 5, the primary sorter 120 is provided with an abrasive discharge port 121 on one upper side through which the abrasives that have been sorted inside are discharged, and on the other side, an abrasive discharge port 121 inside the primary sorter 120. A foreign matter discharge port 122 is provided through which large-sized cutting base materials and foreign matter filtered out from the abrasive input into the abrasive are discharged.

And, inside the primary sorter 120, a mesh plate 123 having a mesh network structure as shown in FIG. 6 is installed, and the particle size contained in the abrasive is determined through the mesh plate 123. Large cutting materials and foreign substances are filtered out and discharged to the outside through the foreign matter outlet 122, and the abrasives that have passed through the mesh plate 123 are discharged through the abrasive outlet 121 located on the lower side of the mesh plate 123. It can be put into the first washer 130 of the process.

At this time, in the primary sorter 120, the lower side of the mesh plate 123 is provided with a curved surface that is convex upward so that the abrasive material containing the cutting base material and foreign substances can be smoothly discharged toward the abrasive discharge port 121 without accumulating in the center. A guide plate 124 may be installed. In addition, a vibration motor 125 capable of applying vibration to the primary sorter 120 is installed on the lower side at a certain distance from the guide plate 124, and the vibration motor 125 is used to apply vibration to the abrasive input into the primary sorter 120. ) By applying vibration through the mesh plate 123, the selection of abrasives can be effectively performed.

In this case, it is desirable that the mesh plate 123 mounted inside the primary sorter 120 be configured to filter out cutting materials and foreign substances in the form of pieces with large particle sizes so that they can be easily separated from the abrasive. The mesh size of the mesh plate 123 is preferably configured to have a size that allows removal of cutting base materials and foreign substances having a size of 10 mm x 10 mm or more.

Meanwhile, the abrasives first sorted in the primary sorter 120 are discharged through the abrasive discharge port 121. It is put into the upper part of the primary washer 130 located on the lower side adjacent to it. In addition, in the primary cleaner 130, the abrasives input from the primary sorter 120 are rotated and transferred through an inclined screw 134 disposed in an upwardly inclined form, and are cleaned using the cleaning water filled therein. Foreign substances adsorbed on can be removed.

Specifically, as shown in FIG. 7, the primary washer 130 is equipped with a water tank inside that can be filled to a certain height with washing water supplied from the outside through a pump (not shown), and the primary washer 130 The abrasive added from the top may be submerged below the surface of the washing water filled inside the water tank.

Additionally, an inclined screw 134 is installed inside the primary washer 130 in an upwardly slanted structure from the inside of the primary washer 130 to the outside. At this time, the lower part of the inclined screw 134 is maintained in a state submerged below the surface of the washing water filled inside the primary washer 130, and the upper part of the inclined screw 134 is held in the primary washer 130. It remains exposed to the outside.

Accordingly, the abrasives introduced into the lower part of the inclined screw 134, which is submerged below the surface of the washing water inside the primary washing machine 130, are rotated and transferred upward through the rotating screw provided inside the inclined screw 134. In the process, the abrasive is washed with the cleaning water below the surface of the cleaning water, and while the cleaned abrasive is rotated and transferred above the surface of the cleaning water via the inclined screw 134, a certain amount of water adsorbed on the abrasive is separated. After that, the abrasive can be dehydrated by falling downward along the inclined screw 134. When cleaning abrasives using this inclined screw 134 structure, the cleaning processing capacity of abrasives per unit time can be increased to about 1.5 times or more compared to the existing one.

In addition, an outlet 132 is formed on the upper side of the primary cleaner 130 through which contaminated water generated during the cleaning process of abrasives using cleaning water can be discharged to the outside, and the contaminated water discharged through the outlet 132 is After being put into a filtration tank (not shown) and going through a sedimentation process, foreign substances including suspended solids are removed through a filter, etc. to create recycled water, and then put back into the washing process to be recycled as washing water.

In addition, the abrasive after the cleaning and dehydration work has been completed in the primary washer 130 can be discharged from the uppermost part of the inclined screw 134 and introduced into the upper part of the secondary washer 140.

Meanwhile, Figure 8 shows the detailed structure of the secondary cleaner 140, which secondarily cleans the abrasives discharged from the primary cleaner 130 in the large-capacity abrasive regeneration system 100 according to the present invention.

As shown in FIG. 8, the secondary washer 140 is provided with a square-shaped water tank 146 in which the abrasives introduced inside are washed with washing water supplied from the outside, and within the square water tank 146 Secondary cleaning can be performed to remove foreign substances adsorbed on the abrasive using cleaning water introduced from the outside through a pump.

In addition, one or more vibration motors 141 capable of generating vibration in the square water tank 146 are installed on the upper side of the secondary washing machine 140, and the abrasives introduced into the interior are generated by the vibration force applied from the vibration motor 141. While the abrasive is vibrated, the abrasive is cleaned by externally supplied cleaning water, and the bottom of the square water tank 146 is provided with a plurality of drainage holes (not shown) to drain the contaminated water generated during the abrasive cleaning process downward. This can be formed. Accordingly, the water adsorbed on the abrasive after cleaning is separated from the abrasive by the vibration force applied through the vibration motor 141 and discharged downward through the drain hole formed on the bottom surface, thereby allowing dehydration of the abrasive.

In this case, in the secondary washing machine 140, the base 144 located at the bottom and the square water tank 146 located at the top are spaced apart at a certain interval, and a rubber pad is placed between the spaced base 144 and the square water tank 146. Alternatively, by installing a buffer member 142 such as a spring, the vibration applied to the square water tank 146 through the vibration motor 141 is attenuated through the buffer member 142 and transmitted to the lower base 144. This can be minimized.

In addition, in the large-capacity abrasive regeneration system 100 of the present invention, the contaminated water generated after cleaning the abrasive in the first and second washers 130 and 140 is discharged and supplied into a separately provided filtration tank (not shown), and inside the filtration tank By allowing the contaminated water to settle for a certain period of time, floating foreign substances contained in the contaminated water are filtered through a filter and discharged to the outside, usable reclaimed water can be created, and the reclaimed water thus produced can be used again in the primary and secondary washers ( 130,140) and can be recycled for cleaning abrasives.

As such, in the large-capacity abrasive recycling system 100 of the present invention, even the contaminated water generated after cleaning the abrasive can be filtered through the filtration tank and recycled for the abrasive cleaning process or other purposes, so all contaminated cleaning water is discarded. Environmental pollution problems that may occur through treatment can be minimized.

Meanwhile, Figure 9 shows in detail the secondary storage tank 150 and the dryer 160 in the large-capacity recycling system 100 for abrasives according to the present invention, and Figure 10 shows the dryer 160 shown in Figure 9. It shows the structure in detail.

Referring to FIGS. 9 and 10, the abrasives that have undergone secondary cleaning and dehydration in the secondary washing machine 140 are discharged through the outlet 143 of the secondary washing machine 140 and then transferred to the secondary conveyor 145. It can be transferred to the secondary storage tank 150 and put into the upper part of the secondary storage tank 150.

The secondary storage tank 150 is a 'V' shaped abrasive storage tank 151 with an open upper structure into which the abrasive is introduced, and is installed on one side of the lower part of the abrasive storage tank 151 to apply vibration to the abrasive storage tank 151. It may be configured to include a vibration motor 152 equipped with a dual timer.

Here, the secondary storage tank 150 has the same basic configuration as the primary storage tank 110 described above, and the secondary conveyor 145 also has the same basic configuration as the primary conveyor 115 described above. Therefore, detailed structural description of these secondary storage tanks 150 and secondary conveyors 145 will be omitted.

A dryer 160 may be installed on the lower side adjacent to the secondary storage tank 150 to dry the abrasives discharged from the lower part of the secondary storage tank 150 using hot air while rotating them.

That is, the abrasive discharged from the secondary storage tank 150 flows into the drum-shaped drying chamber 162 installed inside the dryer 160 through the inlet 161 provided on one side of the dryer 160, and is Moisture adsorbed on the abrasive can be dried using hot air emitted from the burner 164 provided on the outside of the drying chamber 162 while being rotated and transported forward through a screw structure provided on the inner peripheral surface of the abrasive (162).

At this time, the burner 164 can use gas or oil to release thermal power into the internal space of the drying chamber 162, and the abrasives introduced into the drying chamber 162 are moved toward the front by the rotation of the drying chamber 162. It may be configured as a kiln drier method in which moisture contained in the abrasive is evaporated and dried by thermal power or hot air emitted from the burner 162 while being rotated.

The abrasives that have completed the drying process in the dryer 160 are discharged through the abrasive discharge port 167 provided on the front side of the dryer 160 and then transferred through the tertiary conveyor 165 to the upper part of the secondary sorter 170. It is invested. At this time, since the basic structure of the 3rd conveyor 165 is the same as the above-described 1st and 2nd conveyors 115 and 145, detailed structural description thereof will be omitted. The unexplained symbol 166 is a driving motor that rotates the drying chamber 162.

Meanwhile, Figure 11 is an enlarged detailed view of the secondary sorter and the tertiary storage tank 180 in the large-capacity recycling system 100 for abrasives according to the present invention, and Figure 12 is a detailed view of the secondary sorter shown in Figure 11 ( This is a detailed diagram showing the detailed structure of 170).

Referring to Figures 11 and 12, the secondary sorter 170 is discharged from the dryer 160 and then transferred through the tertiary conveyor 165 to separate foreign substances and cutting base materials having a specific particle size from the abrasives introduced to the top. At the same time as filtering, it is possible to distinguish between coarse-grained abrasives that can be reused in the waterjet processing system and fine-grained abrasives that cannot be reused.

Specifically, inside the secondary sorter 170, a plurality of mesh plates 174 and 175 are installed in a multi-stage structure, spaced apart at regular intervals in the vertical direction. In this case, the mesh plate 175 located on the lower side is formed to have a smaller mesh size than the mesh plate 174 located on the upper side, so that the mesh plate 174 on the upper side, which has a relatively large mesh size, can be used. It is possible to select coarse-grained abrasives that can be reused in the waterjet processing system, and through the mesh plate 175 on the lower side with a small mesh size, abrasives that have a fine-grained and fine structure that cannot be reused in waterjet processing can be classified and selected. there is.

In addition, the secondary sorter 170 is comprised of a mesh plate, a guide plate, and a vibration motor inside, and since its basic device configuration is the same as the primary sorter 120 described above, hereinafter, the primary sorter 120 ) will be explained by specifically mentioning only the configurations that are different from ).

The secondary sorter 170 is provided with an upper outlet 171 through which the internally selected coarse-grained abrasives can be discharged, and a lower outlet 172 through which the internally selected fine-grained abrasives can be discharged. A foreign matter outlet 173 is provided through which cutting materials and foreign substances, which have a particle size smaller than that of a coarse-grained abrasive and larger than that of a fine-grained abrasive, are discharged through the selection process.

In this way, the secondary sorter 170 can filter out foreign substances and cutting base materials larger than the abrasive from the abrasive input from the top through a plurality of mesh plates 174 and 175 installed in a multi-stage structure inside, and also filters out cutting materials and foreign substances larger than the abrasive from the input abrasive. It can be configured with a multi-stage sorting structure that can separate and discharge only coarse-grained abrasives of an appropriate size that can be reused for processing, while also separately separating and discharging fine-grained abrasives that cannot be reused in waterjet processing.

In this case, it is desirable that the mesh plates 174 and 175 mounted inside the secondary sorter 170 be configured so that the piece-shaped cutting base material can be easily separated from the recyclable abrasive. To this end, the upper mesh plate 174 is provided with approximately 30 to 40 meshes, and the lower mesh plate 175 may have a mesh plate structure with approximately 120 to 200 meshes. However, the mesh size and number of each mesh plate (174, 175) installed on the upper and lower sides can be appropriately changed and applied as needed, and also, if necessary, the number of mesh plates installed is configured to have a multi-stage structure of two or more. It would also be possible.

On the other hand, when using fine abrasives with small particle sizes, the processing equipment may not operate properly by blocking the waterjet nozzle hole during waterjet processing. In other words, failures in which waterjet nozzle holes are blocked due to fine abrasives frequently occur, which can increase maintenance costs for waterjet nozzles, which are precision-processed products. In addition, in the case of fine abrasives with small particle sizes, it is difficult to clean and classify the abrasives, and the recovery rate is significantly lower as a result, so it is common in existing abrasive processing facilities to dispose of fine abrasives as is rather than recycling them.

However, in the secondary sorter 170 of the present invention, coarse-grained abrasives with an appropriate size that can be recycled for waterjet processing and fine-grained abrasives that cannot be reused in waterjet processing can be separately separated and processed. In addition, the coarse-grained abrasives that can be recycled for waterjet processing or the fine-grained abrasives that cannot be recycled for waterjet processing that are finally sorted in the secondary sorter 170 are individually discharged through the upper and lower outlets 171 and 172, It can be stored by being put into the 3rd storage tank 180 through the 4th conveyor 175. Since the 3rd storage tank 180 has the same basic device configuration as the 1st and 2nd storage tanks 110 and 150 described above, no separate or redundant explanation regarding the detailed structure of the 3rd storage tank 180 will be given.

In addition, in the 3rd storage tank 180, each abrasive that has been finally sorted in the secondary sorter 170 is temporarily stored and stored in an abrasive storage tank, and then is discharged into the finished product through a discharge tube (not shown) connected to the lower part of the abrasive storage tank. It can be supplied with packaging equipment that can be packaged in any form. That is, the coarse-grained abrasives that can be recycled for waterjet processing and the fine-grained abrasives that cannot be recycled, which are finally discharged through the discharge tube, can be supplied to packaging facilities, respectively, and the abrasives can be packaged in small portions in the form of final finished products. In this case, fine-grained fine abrasives that cannot be recycled in waterjet processing can be packaged in small portions as separate products and then supplied in product form to be reused in semiconductor processes or glass processing processes that require fine abrasives.

Hereinafter, a large-capacity regeneration process of abrasives using the large-capacity abrasive regeneration system 100 of the present invention having the above-described configuration will be described.

Figure 13 sequentially shows a large-capacity regeneration process of abrasives used in waterjet processing according to the present invention. The method of large-capacity regeneration of abrasives used in waterjet processing according to the present invention is, first, abrasives used in waterjet processing companies ( Waste abrasives) are recovered and stored in the primary storage tank 110 (S210).

In addition, the abrasives stored in the primary storage tank 110 are discharged in a fixed quantity through the discharge port 111a at the bottom, and are then transferred in small pieces through the primary conveyor 115 to the upper part of the primary sorter 120. It is put into.

At this time, in the primary storage tank 110, the timer time of the dual timer 114 attached to the vibration motor 112 is set differently depending on the viscosity of the input abrasive, so that the operating time of the vibration motor 112 is individually counted, The amount of abrasive input to the primary sorter 120 can be quantitatively adjusted according to the viscosity of the abrasive input to the primary storage tank 110.

Then, the primary sorter 120 filters out cutting materials and foreign substances with large particle sizes from the abrasives input from the top to first select recyclable abrasives (S210).

Then, the abrasives that have gone through the first sorting process in the primary sorter 120 are introduced into the primary cleaner 130, and the abrasives located below the surface of the washing water inside the primary cleaner 130 are used by an inclined screw. As it is rotated and transported upward through (134), it is washed through the cleaning water filled inside, and at the same time, during the upward transport process, the water adsorbed on the abrasive falls downward and is dehydrated (S230).

Subsequently, the abrasives that have been first cleaned and dehydrated in the first washer 130 are input into the second washer 140 and are secondarily washed with washing water supplied from the outside, and then the abrasive is applied through the vibration motor 141. Dehydration is achieved by vibration force. (S240)

Next, the abrasives on which secondary washing and dehydration have been completed in the secondary washing machine 140 are transferred through the secondary conveyor 145 and stored in the secondary storage tank 150 (S250), and then in the dryer ( 160) It is put inside and rotated forward inside the dryer 160 and dried for a certain period of time using hot air (S260).

Then, the abrasives that have been completely dried in the dryer 160 are fed into the secondary sorter 170 through the tertiary conveyor 165, and in the secondary sorter 170, a plurality of mesh plates having a multi-stage structure are provided inside. (174,175) Foreign substances and cutting materials are filtered out from the input abrasives, and coarse-grained abrasives that can be recycled for waterjet processing and fine-grained abrasives that cannot be recycled for waterjet processing are separated and discharged to the outside (S270).

Then, the abrasives sorted by particle size in the secondary sorter 170 are transferred to the tertiary storage tank 180 through the 4th conveyor 175 and temporarily stored in the tertiary storage tank 180. It is stored. (S280)

Then, the abrasives stored and stored in the tertiary storage tank 180 are supplied to packaging equipment and finally packaged in the form of finished products, thereby completing the abrasive recycling process (S290).

As described above, the present invention can easily recover and recycle expensive abrasives used in waterjet machining at a high recovery rate through a series of continuous processes, and also allows the cutting base material generated during waterjet machining and the abrasives used in waterjet machining to be recycled. It has the advantage of effectively separating abrasives and recovering them at a high recovery rate.

In particular, according to the large-capacity abrasive recycling process of the present invention, more than 10 tons of abrasives per day can be recycled in large quantities, and expensive abrasives that were previously discarded can be recovered and reused with a high recovery rate of 70% or more. It is possible to minimize the economic loss that occurred when existing materials were not reused and were entirely disposed of. In addition, the contaminated water generated during the cleaning process of abrasives can be put into a filtration tank, filtered using sedimentation and a filter, and then put back into the cleaning process to be recycled as reclaimed water for cleaning abrasives. Therefore, the environment is affected by the discharge of contaminated water. It can have a more useful effect in terms of resource recycling while minimizing pollution.

In addition, in the first cleaning process of the abrasive, fine abrasives and foreign substances are removed from the water through a process in which the abrasive is rotated upward while a portion of the inclined screw 134 is submerged inside a water tank filled with water and abrasive. The abrasives are separated by floating from above, and only the abrasives of a size that do not float on the water are rotated and transferred through the inclined screw 134, and cleaning and dewatering are carried out continuously, which has the advantage of shortening the cleaning time of the abrasives and increasing cleaning efficiency. there is.

In addition, the existing abrasive recycling device only recovers abrasives with large particle sizes, and all abrasives with particle sizes below a certain size are discarded due to poor cleaning, resulting in a low recovery rate of abrasives and lower economic efficiency. In the invention, the abrasives are classified by particle size using a multi-stage mesh plate according to the size of the abrasives fed into the secondary sorter, and fine-grained abrasives below a certain size that cannot be reused in waterjet processing are also used in semiconductor processing or glass processing. It has the advantage of being recyclable.

Although the present invention has been described as above, those skilled in the art will recognize that it can be implemented in other forms while maintaining the technical idea and essential features of the present invention. .

The scope of rights of the present invention will be defined by the scope of the patent claims, but all changes or modified forms derived from the configurations equivalent to the configurations directly derived from the claims are also included in the scope of the rights of the present invention. It should be interpreted as being

100: Abrasive large-capacity regeneration system
110: Primary storage tank
111,151: Abrasive storage bin
112,125,141,152: Vibration motor
114: Dual timer
115,145,165,175: 1st, 2nd, 3rd, 4th conveyor
120: primary sorter
123,174,175: Mesh plate
124: Information board
130: 1st washing machine
134: inclined screw
140: secondary washing machine
142: Buffer member
144: base
146: square water tank
150: Secondary storage tank
160: dryer
162: Drying chamber
164: burner
170: secondary sorter
180: tertiary storage tank

Claims (9)

A primary storage tank that stores abrasives (waste abrasives) generated after cutting processing objects using a waterjet processing system;
A primary sorter for selecting recyclable abrasives by filtering out cutting materials and foreign substances with large particle sizes from the abrasives introduced after being transferred from the primary storage tank;
A primary washing machine that rotates and transports the abrasive input from the primary sorter upward while performing primary washing with washing water supplied from the outside to remove foreign substances adsorbed on the abrasive;
A secondary washing machine that secondary washes and dehydrates the abrasives input after discharge from the primary washing machine with washing water and discharges them to the outside;
a secondary storage tank for storing the abrasives introduced after being transferred from the secondary washing machine;
A dryer that rotates and transports the abrasives introduced after being discharged from the secondary storage tank and dries them using hot air;
A secondary sorter that filters out foreign substances and cutting base materials from the abrasives fed after being transferred from the dryer, and simultaneously separates coarse-grained abrasives that can be reused in the water jet processing system from fine-grained abrasives that cannot be reused;
A tertiary storage tank that stores the recyclable abrasives that have been finally sorted in the secondary sorter and discharges the stored abrasives for packaging in the form of a final product;
A large-capacity recycling system for abrasives used in waterjet processing, including a.
The abrasive used in waterjet processing according to claim 1, further comprising a filtration tank that filters floating foreign substances contained in the washing water used in the primary and secondary washing machines to generate usable recycled water. High-capacity playback system.
The method of claim 1, wherein at least one of the first to third storage tanks is,
An abrasive storage passage with a 'V' shaped cross-sectional structure with the upper and lower ends open,
It includes a vibration motor that applies vibration to the abrasive reservoir,
A large-capacity regeneration system for abrasives used in waterjet machining, characterized in that the vibration motor is connected to a dual timer for controlling the discharge amount of abrasives by setting the timer time differently depending on the viscosity of the abrasives added to the abrasive reservoir.
The method of claim 1, wherein the primary cleaner rotates and transfers the abrasives upward through a rotating screw while the lower part is submerged below the surface of the cleaning water filled inside, and moves upward from the inside to the outside so that the abrasives can be cleaned and discharged. A large-capacity recycling system for abrasives used in waterjet processing, comprising an inclined screw installed in an inclined form.
The method of claim 1, wherein a plurality of mesh plates spaced apart at regular intervals in the vertical direction are installed in a multi-stage structure inside the secondary sorter,
A large-capacity recycling system for abrasives used in waterjet processing, wherein the mesh plate located at the bottom has a smaller mesh size than the mesh plate located at the top.
A primary sorting step in which abrasives (waste abrasives) generated after cutting of a processing object using a waterjet processing system are fed into a primary sorter to filter out cutting materials and foreign substances with large particle sizes contained in the abrasives;
A primary cleaning step of putting the abrasives selected through the primary sorter into the primary washing machine and rotating the abrasives upward while washing the abrasives using washing water;
A secondary washing step of putting the abrasives that have been cleaned through the first washing machine into a secondary washing machine and washing them with washing water while simultaneously applying vibration to the cleaned abrasives to dehydrate them;
A drying step of putting the abrasives that have been cleaned and dehydrated through the secondary washing machine into a dryer and drying them using hot air while rotating the abrasives forward;
The abrasives dried through the dryer are put into a secondary sorter to filter out foreign substances and cutting materials from the abrasives, while simultaneously sorting out coarse-grained abrasives that can be reused in the waterjet processing system and fine-grained abrasives that cannot be reused. step;
A large-capacity regeneration method of abrasives used in waterjet processing, including a.
The method of claim 6, wherein in the first sorting step, the amount of abrasives fed into the first sorter is adjusted according to the viscosity of the abrasives.
The method of claim 6, wherein in the first cleaning step, the abrasive located below the water surface of the cleaning water inside the first washer is cleaned by rotating and transferring it upward using an inclined screw. Method for recycling large quantities of used abrasives.
According to claim 6, in the secondary sorting step, a plurality of mesh plates installed in a multi-stage structure inside the secondary sorter are used to separate and select coarse-grained abrasives that can be reused in the waterjet processing system and fine-grained abrasives that cannot be reused. A large-capacity regeneration method of abrasives used in waterjet processing, characterized in that.

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