Drying device for cutting chip

Abstract

The present invention aims to provide a processing chip drying device that has advantages such as increasing work efficiency and reducing recovery unit costs by performing the processing oil removal work on the surface of the processing chip in stages and performing the processing oil removal work during the step-by-step movement process of the processing chip, thereby enabling effective processing in a relatively short time and process. The present invention comprises: a split input hopper (10A)(10B)(10C) that divides and stores processing chips and feeds them into a first vibrating feeder (20); a first vibrating feeder (20) that performs a first de-oiling operation on processing chips divided and fed from the split input hopper (10A)(10B)(10C); a bucket elevator (30) that transfers processing chips, which have completed the first de-oiling operation in the first vibrating feeder (20), to a storage hopper (40) for storing a certain amount and performs a de-oiling operation together during the transfer process; a storage hopper (40) that stores processing chips transferred through the bucket elevator (30) in certain amounts while preventing the processing chips from clumping together; and a second vibrating feeder (50) that feeds a certain amount of processing chips from the storage hopper (40) and performs a second de-oiling operation. The processing oil removal device for the processing chips is characterized by being configured with a rotary drum dryer (60) that feeds a certain amount of the processing chips that have completed the second oil removal process and performs a drying process.

Description

Technology Field

[0001] The present invention relates to a processing chip drying device that removes processing oil (cutting oil, cooling oil, moisture, etc.) from the surface of processing chips and pulverized metal generated during metal cutting processes and dries them so that they can be recycled. More specifically, the invention relates to a processing chip drying device that has advantages such as increasing work efficiency and reducing recovery costs by effectively processing the chips in a relatively short time and process by performing the processing oil removal work on the surface of the processing chips in stages and performing the processing oil removal work during the staged movement process of the processing chips. Background Technology

[0002] In general, various cutting processes such as lathes and milling generate machining chips, such as cutting chips and metal fragments (hereinafter referred to as "machining chips"). Since cutting fluids, cooling fluids, etc., adhere to the surface of these machining chips during the cutting process, the machining fluids (cutting fluids, cooling fluids, moisture, etc., hereinafter collectively referred to as "machining fluids") must be removed for the recycling of the machining chips.

[0003] If the processing oil adhering to the surface of the processing chips is not properly removed, it becomes a cause of extremely dangerous safety accidents, such as explosions when coming into contact with high-temperature molten metal during introduction into the melting furnace, and leads to steelmaking defects, resulting in a low recycling rate.

[0004] We examine conventional technologies for recycling such processed chips.

[0005] Reference 1 discloses a device for compressing and recovering machining chips, comprising a compressor that compresses the machining chips with a compression roller and an induction hopper that receives the machining oil from the compressed block-shaped pulverizer, and Reference 2 discloses a cleaning device for a machined product that separates and removes the machining oil by introducing the machining chips into a main body containing cleaning water and cleaning them.

[0006] In addition, Reference 3 discloses a manufacturing apparatus for steel ingots using processing chips, which mixes processing chips with sodium silicate and molds them into high-hardness steel ingots, and Reference 4 discloses an oil separation and removal apparatus for processing chips, which separates oil by introducing processing chips into a water tank, and then dehydrates and dries the processing chips from which oil has been separated in a dehydration tank.

[0007] Additionally, Reference 5 discloses a machining chip recycling device that discharges cutting fluid from machining chips during transport through a mesh-type filter and heats and dries the machining chips for recycling, and Reference 6 discloses a machining chip cutting fluid removal device that heats the machining chips of metal or non-ferrous metal to burn off the remaining cutting fluid, thereby increasing the recovery rate.

[0008] Additionally, Reference 7 discloses a cutting chip separation and oil recovery device comprising: a hopper section for guiding cutting chips and oil into the interior after metal processing; and a rotating drum mounted on the hopper section that receives cutting chips and oil and rotates to wash off oil adhering to the surface of the cutting chips, thereby enabling the separation and recovery of cutting chips and oil.

[0009] Reference 8 discloses an automatic aluminum chip collection, transport, and melting system that not only increases the recovery rate by moving, washing, and crushing aluminum chips discharged from an automatic aluminum processing device, but also increases the recyclability of aluminum chips by allowing them to be easily melted in a chip melting furnace.

[0010] In particular, Reference 9 discloses a processing chip drying device that can effectively increase the recovery rate of processing chips by enabling the processing oil on the surface of the processing chip to be effectively removed and the processing chip from which the processing oil has been removed to be dried using waste heat.

[0011] The aforementioned conventional device contributes to increasing resource recovery rates by removing processing oil from the surface of processing chips. However, it was insufficient for application to expensive materials such as copper (Cu), which require a high removal rate for processing oil and the like.

[0012] In other words, conventional methods involved performing recovery operations multiple times to remove processing oil through drying with high-temperature hot air or chemical treatment. This process carried out disadvantages such as high risk of damaging the original properties of high-value materials like copper (Cu) due to oxidation, and high recovery costs resulting from the long processing time required. Consequently, there was a need for a method that could effectively remove processing oil in a short time without causing changes in physical properties, thereby increasing the recovery rate and reducing recovery costs. Prior art literature

[0013] (Reference 1) Korean Registered Patent Publication No. 10-1265655, May 13, 2013. (Reference 2) Korean Registered Utility Model Publication No. 20-0375905, March 10, 2005. (Reference 3) Korean Published Patent Publication No. 10-2007-0101126, October 16, 2007. (Reference 4) Korean Registered Utility Model Publication No. 20-0203141, September 4, 2000. (Reference 5) Korean Patent Registration Publication No. 10-0872659, December 9, 2008. (Reference 6) Korean Published Patent Publication No. 10-2018-0062153, June 8, 2018. (Reference 7) Republic of Korea Published Patent Application No. 10-2020-00850515, July 14, 2020 (Reference 8) Republic of Korea Published Patent Application No. 10-2020-0114101, October 7, 2020 (Reference 9) Republic of Korea Registered Utility Model Publication No. 20-0470520, December 24, 2013. The problem to be solved

[0014] The present invention enables the effective removal of processing oil from the surface of processing chips in a short period of time, and aims to minimize the process of removing processing oil through heat treatment, etc., thereby enabling the effective recovery of processing chips of expensive materials such as copper (Cu) without changes in physical properties.

[0015] The present invention aims to increase the recovery rate of processing chips from expensive materials and significantly reduce recovery costs by enabling the removal of processing oil through a natural detachment process by physical force without chemical treatment and while minimizing the process of heating at high temperatures or drying with hot air, thereby allowing the recovery operation to be performed efficiently without damaging the original physical properties. means of solving the problem

[0016] The present invention for solving the above problem is;

[0017] The apparatus is characterized by comprising: a split input hopper that divides and stores processing chips and feeds them into a first vibrating feeder; a first vibrating feeder that performs a first degreasing operation on the processing chips divided and fed from the split input hopper; a bucket elevator that transfers the processing chips, after the first degreasing operation, to a storage hopper for storing a certain amount and performs a degreasing operation during the transfer process; a storage hopper that stores the processing chips transferred through the bucket elevator in certain amounts while preventing the processing chips from clumping together; a second vibrating feeder that feeds a certain amount of processing chips from the storage hopper and performs a second degreasing operation; and a rotary drum dryer that feeds the processing chips, after the second degreasing operation, in certain amounts and performs a drying operation. Effects of the invention

[0018] The present invention allows for the effective recycling of processed chips by removing processing oil from the surface of the chips and drying them to recover the chips.

[0019] The present invention allows for the effective recovery of processing chips of expensive materials such as copper (Cu) by removing processing oil in a short time without chemical treatment or by minimizing processes such as heating at high temperatures or hot air drying, and can expect many benefits and effects, such as excellent recovery rates and minimized recovery costs.

[0020] The present invention aims to minimize the cost of removing processing oil and recovering processing chips by performing a step-by-step removal process to remove processing oil from processing chips, performing the processing oil removal work even during the step-by-step transfer process for performing the removal process, and performing the removal work more efficiently through consistency in work and production with a constant amount of work.

[0021] The present invention has several advantages, such as the ability to increase productivity with excellent work efficiency and significantly reduce recovery costs, by performing the oil removal operation of processing chips in a process of 1 to 3 stages, and by continuously performing the oil removal operation and drying operation in certain quantities during the staged transfer process for the oil removal operation. Brief explanation of the drawing

[0022] FIG. 1 is an overall configuration diagram showing an embodiment of the present invention. FIG. 2 is a configuration diagram of the split input hopper and the primary vibrating feeder of the present invention. FIG. 3 is a configuration diagram of the primary vibrating feeder of the present invention. FIG. 4 is a configuration diagram of the bucket elevator of the present invention. FIGS. 5 to 7 are configuration diagrams of the key parts of a bucket elevator. FIGS. 8 to 10 are configuration diagrams of the storage hopper and the secondary vibrating feeder of the present invention. FIGS. 11 and 12 are configuration diagrams of a rotary drum dryer according to the present invention. Specific details for implementing the invention

[0023] The present invention comprises a split-feed hopper that divides and stores processing chips and feeds them into a primary vibrating feeder, a primary vibrating feeder that performs a de-oiling operation to remove processing oil from processing chips fed in from the split-feed hopper [hereinafter, in the present invention, the operation of removing processing oil from the surface of processing chips is referred to as 'de-oiling operation'], a bucket elevator that transfers processing chips that have completed the primary de-oiling operation in the primary vibrating feeder to a secondary vibrating feeder and performs the de-oiling operation in the process, a storage hopper that receives processing chips that have completed the primary de-oiling operation in the primary vibrating feeder through the bucket elevator, stores a certain amount of work, and prevents the processing chips from clumping together with a rotating blade, a secondary vibrating feeder into which a certain amount of processing chips are fed from the storage hopper and performs a secondary de-oiling operation on the processing chips, and a rotary drum dryer that feeds a certain amount of processing chips that have completed the secondary de-oiling operation, performs a tertiary de-oiling operation, and dries them.

[0024] The work is carried out in a step-by-step process in which a first oil removal operation is performed in the split input hopper and the first vibrating feeder, a second oil removal operation is performed in the bucket elevator and the second vibrating feeder, and a third oil removal operation is performed in the rotary drum dryer.

[0025] The above-mentioned split feeding hopper allows the processing chips to be divided and stored and fed without storing and feeding a large amount of processing chips at once, thereby allowing the divided processing chips to be fed into the primary vibrating feeder.

[0026] The above split feeding improves the de-oiling effect by the primary vibrating feeder by reducing the density of the processing chips and feeding them, in addition to the dispersion effect of the processing chips, thereby causing the vibration energy in the primary vibrating feeder to act more widely and strongly.

[0027] The above-mentioned primary vibrating feeder shakes off the processing chips fed from the split feeding hopper with vibration to remove the processing oil adhering to the surface.

[0028] The bucket elevator transfers the processed chips, which have completed the de-oiling process in the above-mentioned primary vibrating feeder, to the storage hopper and performs the de-oiling process during the transfer process.

[0029] The storage hopper feeds a certain amount of processing chips, which have completed the degreasing process in the primary vibrating feeder, into the secondary vibrating feeder to perform a secondary degreasing process. The storage hopper is equipped with a rotating blade to loosen clumped processing chips and prevent the processing chips from clumping together.

[0030] The above secondary vibrating feeder removes residual processing oil from the processing chips by vibration to perform secondary degreasing. The processing chips that have completed the secondary degreasing process are immediately fed into a rotary drum dryer to perform a drying process along with a tertiary degreasing process.

[0031] The specific embodiments of the present invention will be examined in detail below in conjunction with the attached drawings.

[0032] First, the terms used in this invention have been selected to be as widely used and general as possible, taking into account the functions in this invention; however, these may vary depending on the intent or convention of those skilled in the field or the emergence of new technologies.

[0033] In addition, terms selected at the applicant's discretion may be used as necessary or for the convenience of explanation, and in such cases, their meanings will be described in the description section of the relevant invention. Accordingly, terms used in this specification should be interpreted not merely by their names, but based on their substantive meanings and the overall content of this specification.

[0034] FIG. 1 is an overall configuration diagram showing an embodiment of the present invention.

[0035] The divided input hoppers (10A, 10B, 10C) are configured to be divided into at least three equal parts so as to receive a certain amount of processing chips in each divided portion, and the processing chips can be divided into a certain amount and fed from each divided input hopper (10A, 10B, 10C) to the storage vibrating feeder (20). To this end, the divided input hoppers (10A, 10B, 10C) are configured to be divided into at least three equal portions as shown in the illustrated example.

[0036] A primary vibrating feeder (20) is installed at the bottom of the input port (11A, 11B, 11C) of the divided input hopper (10A, 10B, 10C) which is configured as described above and stores processed chips in divided portions.

[0037] The split input hoppers (10A, 10B, 10C) are arranged side by side on the primary vibrating feeder (20) to allow a certain amount of processing chips to be uniformly fed into each split input hopper (10A, 10B, 10C), thereby allowing the processing chips to be evenly distributed and fed over a wider area on the primary vibrating feeder (20), so that the degreasing of the processing chips can be carried out evenly and effectively on the primary vibrating feeder (20).

[0038] The above-mentioned primary vibrating feeder (20) is composed of a vibrator (21) and a vibrating screen (22), and as the vibrating screen (22) connected to the vibrator (21) vibrates, it shakes off and separates the processing oil from the surface of the processing chips on the vibrating screen (22). At this time, the vibrating screen (22) of the primary vibrating feeder (20) is formed to be inclined downward toward the bucket elevator (30) described later, so that the processing chips dehydrated from the primary vibrating feeder (20) are naturally moved toward the bucket elevator (30) as they are dehydrated by the vibration.

[0039] In the above, a recovery port (23) for recovering the dehydrated processing oil is provided at the end of the bucket elevator (3) of the vibrating screen (22), and the oil is processed using a collection device (pump, etc.).

[0040] The processing chips, which are divided and fed from the above split input hoppers (10A, 10B, 10C) and have their processing oil removed in the first stage at the first vibrating feeder (20) to complete the first stage of processing oil removal, are transferred to the second vibrating feeder (50) via the bucket elevator (30) to perform a second stage of degreasing.

[0041] By placing the storage hopper (40) and the secondary vibrating feeder (50) at a relatively higher position compared to the primary vibrating feeder (20), the process oil removal operation, or de-oiling operation, can be performed in fixed amounts, thereby increasing the recovery rate and reducing recovery costs through consistency in the recovery operation. This will be explained in detail later.

[0042] The storage hopper (40) is installed at a relatively higher position than the primary vibrating feeder (20), and the processing chips that have completed the primary removal operation in the primary vibrating feeder (20) are transported using a bucket elevator (30).

[0043] A bucket elevator (30) is installed so that a lifting chain (32) can be moved up and down inside a housing (31), and a plurality of buckets (33, 33') are installed on the lifting chain (32) so that as the buckets (33, 33') move up and down, they scoop up the processed chips from the bottom and transport them to the top, and feed them into a storage hopper (40) from the top.

[0044] The above lifting chain (32) is configured to be installed on drive sprockets (notation omitted) placed above and below the housing (31) and to move up and down while operating as an endless track by a drive (notation omitted), and a plurality of buckets (33, 33') are installed on the lifting chain (32). The configuration and operation of such a bucket elevator (30) are known.

[0045] The present invention enables oil removal to occur even during the transport process, such as by configuring the bucket (33, 33') as a mesh so that oil removal is naturally performed as the processing chips contained in the bucket (33, 33') rise and are transported. This is examined.

[0046] An input hopper (34) is installed at the bottom of the housing (31) of the bucket elevator (30) to receive processing chips from the primary vibration feeder (20), and at the bottom of the housing (31) of the bucket elevator (30), a receiving section (35) is formed that is connected to the input hopper (34) and receives processing chips introduced through the input hopper (34) and is scooped up by a bucket (33, 33').

[0047] The above receiving section (35) is composed of a mesh so that the processing oil of the processing chips fed from the above input hopper (34) is collected in the bucket (33, 33') and drained.

[0048] In addition, a vibrator (36) is installed in the input hopper (34) to vibrate the input hopper (34) and the receiving section (35) connected to the input hopper (34), thereby ensuring that the processing chips fed through the input hopper (34) are stably transported to the receiving section (35), and that the processing chips are de-oiled by vibration in the receiving section (35).

[0049] As described above, the processing chips fed from the input hopper (34) and undergoing oil removal work through vibration are scooped upward by the buckets (33, 33') and moved upward, and during the upward transport process, the processing oil flows down due to its own weight from the buckets (33, 33') which are made of mesh, thereby removing the oil.

[0050] To this end, the bucket (33, 33') can be configured with a mesh (mesh type, etc.) such as the vibrating screen (22) (52) of the primary and secondary vibrating feeder (20) (50) in the lower part of the entire body, that is, the bottom part, and thereby achieve de-oiling during the transfer process.

[0051] The processing oil extracted by the above bucket (33, 33') is processed through a collection device (pump, etc.). The processing chips contained in the bucket (33, 33') are de-oiled as the processing oil is detached by their own weight while moving upward. The processing chips, which have undergone de-oiling even during the transport process, are transported upward by the bucket (33, 33') and then fed into the storage hopper (40) through the discharge port (37).

[0052] The storage hopper (40) stores a fixed amount of material corresponding to the amount of work performed in the rotary drum dryer (60) described later. The storage hopper (40) feeds the processing chips transported from the bucket elevator (30). Once the processing chips have been fed in a fixed amount, the rotary blade (41) is driven to prevent the processing chips from clumping together and to disperse any clumped processing chips, thereby improving the efficiency of the de-oiling process. [Due to the nature of the processing chips, there may be a phenomenon where they tangle and clump together.]

[0053] The above-mentioned rotating blade (41) can be implemented in various shapes other than a cross shape, such as a blade linked to a driving device (notation omitted) as illustrated in the example, so as to be able to stir and disperse processing chips within the storage hopper (40), and can be implemented in various equivalent configurations capable of dispersing aggregated processing chips, such as known stirrers and impellers.

[0054] As described above, the storage hopper (40) equipped with a rotating blade (41) sufficiently disperses and agitates the processing chips with the rotating blade (41) so that they do not clump together, and then transfers them to a secondary vibrating feeder (50).

[0055] The above-mentioned secondary vibration feeder (50) has the same configuration as the above-mentioned primary vibration feeder (20),

[0056] It is composed of a vibrator (51) and a vibrating screen (52), and the vibrating screen (52) connected to the vibrator (51) vibrates to shake off and separate the processing oil from the surface of the processing chips on the vibrating screen (52). The vibrating screen (52) of the secondary vibrating feeder (50) is formed to be inclined downward in the direction of the rotary drum dryer (60) described later, so that the processing chips dehydrated from the secondary vibrating feeder (50) are dehydrated by vibration and moved to the rotary drum dryer (60).

[0057] After performing a two-stage oil removal operation by dropping the processed chips, which were first removed from oil in the first vibrating feeder (20), from a high position to the storage hopper (40) and the second vibrating feeder (50), a third stage of final oil removal and drying operation is performed in the rotary drum dryer (6).

[0058] The rotary drum dryer (60) feeds a certain amount of the processed chips from the storage hopper (40) into the secondary vibrating feeder (50) and performs a second oil removal operation on the vibrating screen (52), thereby performing a final oil removal operation on the processed chips that have completed the second stage of work.

[0059] The rotary drum dryer (60) removes the processing oil from the processing chips and dries them by the worm centrifugal force of the drying impeller (61) rotating inside.

[0060] At this time, the rotary drum dryer (60) rotates by centrifugal force and performs drying along with degreasing, but depending on the properties or amount of residual oil, the processing chip drying operation may also be performed selectively by forced drying through hot air, heaters, etc. along with rotation.

[0061] As described above, the present invention allows for the first de-oiling operation to be performed by feeding processing chips into the first vibrating feeder (20) over a wide area through the split feeding hopper (10A, 10B, 10C), and the de-oiling operation to be performed during the transfer process of the bucket elevator (30) to transfer to the second vibrating feeder (50) for the second de-oiling operation, so that the de-oiling operation can be performed effectively in a short time.

[0062] In addition, before performing the second oil removal operation on the second vibrating feeder (50), the clumping in the storage hopper (40) is resolved, and a certain amount is fed into the second vibrating feeder (50) and the rotary drum dryer (60) in accordance with the workload of the rotary drum dryer (60). By consistently performing the step-by-step oil removal operation in stages—the first stage of the second oil removal operation by the first vibrating feeder (20), the second stage of the second oil removal operation by the second vibrating feeder (50), and the third stage by the rotary drum dryer (60)—work efficiency can be increased through a consistent amount of input and production.

[0063] In particular, since the process is carried out without drying by direct hot air or heaters, processing chips of expensive materials such as copper (Cu) can be effectively recovered without altering their physical properties, thereby increasing the recovery rate and significantly reducing recovery costs. Explanation of the symbols

[0064] The symbols used in the attached drawings to specifically explain the embodiments of the present invention are explained as follows. 10A, 10B, 10C: Split-feed hopper 11A, 11B, 11C: Input port 20: 1st Vibrating Feeder 21: Vibrator 22: Vibrating screen 23: Recovery outlet 30: Bucket Elevator 31: Housing 32: Lifting chain 33,33': Bucket 34: Input Hopper 35: Receiving part 36: Vibrator 37: Outlet 40: Storage hopper 41: Rotating blade 50: Secondary Vibrating Feeder 51: Vibrator 52: Vibrating screen 60: Rotary Drum Dryer 61: Drying impeller

Claims

Claim 1 A processing chip drying device comprising: a first vibrating feeder (20) that performs a first de-oiling operation on processing chips divided and fed from a divided input hopper (10A)(10B)(10C) that divides and stores processing chips and feeds them into a first vibrating feeder (20); a bucket elevator (30) that transfers processing chips, which have completed the first de-oiling operation in the first vibrating feeder (20), to a storage hopper (40) using buckets (33, 33') installed on a lifting chain (32); a second vibrating feeder (50) that performs a second de-oiling operation by feeding a certain amount of processing chips from a storage hopper (40) that stores processing chips transferred through the bucket elevator (30); and a rotary drum dryer (60) that performs a drying operation by feeding a certain amount of processing chips that have completed the second de-oiling operation. In this device, the buckets (33, 33') of the bucket elevator (30) A processing chip drying device characterized by being configured with a mesh so that the bucket (33, 33') scoops up the processing chips upward and transfers them to the storage hopper (40), thereby naturally performing the de-oiling process. Claim 2 delete Claim 3 delete Claim 4 delete Claim 5 delete Claim 6 delete

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