Scrap Compression and Collection Apparatus Capable of Dust Separation for Recycling

Abstract

The recycling scrap compression and collection device capable of separating dust according to the present invention comprises: a scrap suction port for sucking scrap from a processing device; an air discharge port for releasing air from which dust has been removed to the outside; a scrap discharge port for releasing compressed scrap to the outside; a dust discharge port for discharging collected dust to the outside; and a case portion equipped with a control panel, wherein inside the case portion thereis: a first filter disposed above the scrap suction port; a scrap hopper disposed below the scrap suction port; a scrap compression device for compressing collected scrap; a first differential pressure sensor for measuring the differential pressure of the first filter; a first filter cleaning unit for detaching scrap attached to the first filter; an airflow meter; a second filter for removing dust from air passing through the first filter; a second differential pressure sensor for measuring the differential pressure of the second filter; and a third filter for removing fine dust from air passing through the second filter. It is characterized by comprising: a third differential pressure sensor for measuring the differential pressure of the third filter; a second filter cleaning unit; a dust hopper in which dust removed from the second filter cleaning unit is collected and a dust discharge port is connected to the lower side; and a blower that generates pressure to suck in scrap and discharges air that has passed through the third filter to the outside through the air discharge port.

Description

Technology Field

[0001] The present invention relates to a scrap compression and collection device for recycling that collects and compresses scrap to process it into a recyclable resource. More specifically, it relates to a scrap compression and collection device capable of dust separation that removes various types of dust generated during scrap processing from the scrap to reduce contamination of the scrap to be recycled, while protecting workers from damage caused by dust. Background Technology

[0003] The present invention relates to a device for recovering scrap and dust generated during the processing of metal members, and more specifically, to a device for recovering scrap generated during the metal processing process by negative pressure while simultaneously removing dust.

[0004] In general, processes involving the processing of metal components by methods such as cutting, pressing, punching, or milling generate large amounts of scrap and fine metal dust. These scraps need to be recovered as recyclable resources, and dust requires proper removal as it can cause contamination of the working environment, degradation of equipment performance, and safety issues for workers.

[0005] Conventionally, mechanical recovery devices such as conveyors, screw feeders, or gravity-fed systems have been used to recover scrap generated in metal processing. However, while these methods are suitable for recovering relatively large scrap, they have limitations in recovering fine scrap or dust, and there was a problem with dust scattering during the dropping or transport of the scrap.

[0006] Meanwhile, recently, a method has been used in which suction nozzles are installed around the processing area and scrap or dust is sucked in by negative pressure using a blower or dust collector. Although this method can improve the cleanliness of the working environment, there is a problem in that dust is collected with the scrap surface attached because scrap and dust are sucked in and recovered in a mixed state. This leads to issues such as a decrease in the recycling quality of the recovered scrap or the requirement for an additional cleaning process.

[0008] Furthermore, conventional industrial dust collectors are primarily configured with filter or cyclone systems to remove dust from the air; while effective for capturing relatively light dust, they are not designed with the recovery and recycling of heavy metal scrap in mind. Consequently, if metal scrap enters the dust collector, there is a risk of filter damage, clogging, or safety issues.

[0009] In particular, processes for processing metal components such as positive and negative terminals of secondary batteries generate metal scrap, such as aluminum or copper, and fine dust simultaneously. Consequently, maintaining process cleanliness and securing the recycling value of the scrap have emerged as critical challenges. However, conventional technologies have either handled scrap recovery and dust removal separately or focused primarily on improving the working environment; thus, devices capable of efficiently recovering scrap as a recyclable resource while effectively removing dust have not been presented. Consequently, there is a continuously increasing demand for technology that can stably recover scrap generated during metal processing using negative pressure, while effectively separating the scrap from the dust during or after the recovery process to secure dust-free scrap.

[0010] A conventional technology for removing dust from scrap is Korean registered patent No. 10-1937827. However, in this conventional technology, dust is separated by forming a vortex, so the efficiency of separating dust from scrap is low, and since a shut-off plate is used, pressure control is difficult, so it is difficult to guarantee reliable dust removal. Prior art literature

[0012] KR 10-1937827 B1, 2019.01.11., Fig. 8 KR 10-2665861 B1, 2024.05.14., Fig. 2 The problem to be solved

[0013] The present invention has been devised to solve the problems of the prior art described above, and aims to ensure that dust remaining on scrap is reliably removed, the service life and performance of the filter can be increased, energy can be saved by optimally controlling the airflow required for suction, and reliable operation of the collection device is possible. means of solving the problem

[0015] The recycling scrap compression collection device capable of dust separation according to the present invention is,

[0017] A scrap suction port for sucking scrap from a processing device that generates recyclable scrap;

[0018] An air outlet that releases dust-removed air to the outside;

[0019] A scrap discharge port for discharging compressed scrap to the outside;

[0020] A dust outlet for discharging collected dust to the outside;

[0021] In a recycling scrap compression collection device having a case part equipped with a control panel,

[0023] Inside the above case part.

[0025] A first mesh-shaped filter positioned above the scrap suction port;

[0026] A scrap hopper positioned below the scrap suction port to collect falling scrap;

[0027] A scrap compression device located below the scrap hopper and compressing the collected scrap;

[0029] A first differential pressure sensor for measuring the differential pressure generated by a first filter;

[0030] A first filter cleaning unit for applying physical force to the first filter to detach scrap attached to the first filter when it is determined that the first filter is contaminated;

[0031] An airflow meter for measuring the airflow volume of air passing through the first filter;

[0033] A second filter for removing dust from air that has passed through a first filter;

[0034] A second differential pressure sensor for measuring the differential pressure of the second filter;

[0036] A third filter for removing fine dust from the air that has passed through the second filter;

[0037] A third differential pressure sensor for measuring the differential pressure of the third filter;

[0039] A second filter cleaning unit for applying physical force to the second filter to detach dust attached to the second filter when it is determined that the second filter is contaminated;

[0040] A dust hopper in which dust detached from the second filter is collected and a dust discharge port is connected to the lower side;

[0042] The invention includes a blower that generates pressure to suck in scrap and discharges air that has passed through the third filter to the outside through the air outlet; wherein the blowing volume of the blower is divided into a plurality of stages up to a maximum blowing volume, and the initial differential pressure Pinit, final differential pressure Pmax, value F according to the usage form of the filter, and safety margin Pv according to the blowing volume of each stage are used as variables to determine a value Pv, which is then compared with the differential pressure measured by the differential pressure sensors of the first to third filters, respectively, and when the measured differential pressure reaches the determined value Pv, the blowing volume is increased to the next stage or the filter is replaced.

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[0045] It is preferable to further provide a first separator that separates the space of the scrap compression device and the scrap hopper device.

[0047] It is preferable to further provide a scrap dust conveying unit that sucks in dust from the scrap compression device and scrap conveying device and conveys it to the second filter side.

[0049] It is desirable to attach a vibration generator to the outer surface of the dust hopper to dislodge dust attached to the inner surface of the dust hopper.

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[0055] The above-determined value Pv is

[0056] The final differential pressure Pmax of the filter is 55% of the maximum static pressure Ps of the blower,

[0057] The filter usage type F is one of Normal 0.5, Maximum 0.7, or Minimum 0.3,

[0058] The initial differential pressure of the filter, Pinit, is the differential pressure measured when a new filter is inserted.

[0059] By setting the safety margin Psafe within the range of 0.1 to 0.20 kPa

[0060] The pressure Pcal for calculation is determined by the following equation (1), and

[0062] Pcal = Pmax / F + Pinit ----------(1)

[0064] It is preferable that the determined value Pv be determined by the following equation (2).

[0066] Pv = Pinit + (Pcal -Pnit)*F -Psafe ----------(2) Effects of the invention

[0068] According to the present invention, dust remaining on recyclable scrap can be reliably removed, thereby increasing recycling efficiency; the service life and performance of the filter can be extended; the air volume required for suction can be optimally controlled, thereby saving energy and enabling reliable operation of the collection device. Brief explanation of the drawing

[0070] FIG. 1 is a perspective view showing the front, right side, and top surface of a collection device of one embodiment of the present invention. FIG. 2 is a perspective view showing the rear, left side, and top surface of a collection device of one embodiment of the present invention. FIGS. 3 and 4 are the front and rear views of the collection device shown in FIGS. 1 and 2. FIGS. 5 and 6 are perspective views of the collection device shown in FIGS. 1 and 2 with the case portion made transparent. FIGS. 7 and 8 are a front and rear view of the collection device shown in FIGS. 3 and 4, with the case portion made transparent. FIGS. 9 and 10 are drawings showing the scrap compression process of a collection device of one embodiment of the present invention. Specific details for implementing the invention

[0071] Hereinafter, the present invention will be described in more detail with reference to the drawings according to its embodiments.

[0072] FIGS. 1 and 2 are perspective views of a collection device of one embodiment of the present invention, FIG. 3 is a front view of the collection device of this embodiment, and FIG. 4 is a rear view of the collection device of this embodiment.

[0074] In this embodiment, the collection device has a scrap suction port (110) for sucking scrap from a processing device that generates recyclable scrap, an air discharge port (120) for releasing air from which dust has been removed to the outside, a scrap discharge port (130) for releasing compressed scrap to the outside, a dust discharge port (140) for releasing collected dust to the outside, and a control panel (150) exposed on the outside of the case part (100).

[0076] Wheels, etc. are installed on the lower part of the case part (100) to allow the collection device of this embodiment to be moved, and a filter replacement part (221, 231) is provided on the front of the case part (100) to replace the second and third filters (220, 230) to be described later.

[0078] In this embodiment, the processing device that generates recyclable scrap is a device that processes the negative or positive terminal of a secondary battery, and scrap and dust are generated during the processing process.

[0079] Scrap and dust from a processing device (not shown) are introduced into the collection device of this embodiment through the scrap suction port (110) by the negative pressure generated by a blower, which will be described later. The dust is removed within the collection device, and the compressed scrap is discharged through the scrap discharge port (130). The compressed and discharged scrap may be collected in a cart (160) as in this embodiment, or, as in other embodiments, may be wrapped in plastic by a plastic wrapping device (not shown) installed on the side of the scrap discharge port (130) and then discharged to the outside by a conveyor or the like for stacking. Additionally, the air from which the dust has been removed is discharged to the outside of the collection device of this embodiment through the air discharge unit (120), and the dust collected by the dust hopper (410), which will be described later, is discharged to the outside through the dust discharge port (140) connected to a negative pressure device (not shown), such as an external vacuum cleaner.

[0081] FIGS. 5 and 6 are perspective views of the collection device shown in FIGS. 1 and 2 with the case portion made transparent, FIG. 7 is a front view of the collection device shown in FIG. 3 with the case portion made transparent, and FIG. 8 is a rear view of the collection device shown in FIG. 4 with the case portion made transparent, intended to explain the internal structure of the collection device of the present embodiment.

[0083] Scrap and dust generated in the external processing device are introduced into the case part (100) of the collection device of this embodiment through the scrap suction port (110). In this embodiment, such introduction is achieved by the negative pressure generated by the blower (300) as previously described.

[0084] It is also possible to provide a separate device located between the processing device and the collection device that sucks scrap and dust from the processing device and transports them to the collection device.

[0086] Scraps introduced into the scrap suction port (110) fall into the scrap hopper (510) by their own weight, or scraps that are light in weight and move along with dust by the flow of air are filtered by the first filter (210) installed above the scrap suction port (110).

[0088] A differential pressure sensor (not shown) is installed in the first filter (210) to measure the differential pressure generated by the first filter (210). Since it is obvious that the differential pressure sensor consists of pressure gauges installed before and after the filter, a detailed description is omitted.

[0090] When the differential pressure measured by the differential pressure sensor increases to a certain value, the filter is cleaned or replaced. The timing for cleaning and replacing the filter will be explained in more detail later. The first filter (210) receives vibrations through the transmission pipe (211-1) of the first filter cleaning unit (211), thereby enabling the scrap attached to the first filter (210) to fall off. At this time, it is desirable to temporarily stop or lower the sound pressure from the blower (300). Additionally, the transmission pipe (211-1) may, if necessary, receive compressed air from the first filter cleaning unit (211) and spray it toward the scrap hopper (510) to detach fine scrap attached to the inner surface of the scrap hopper (510) and to separate dust attached to the surface of the scrap from the scrap.

[0092] Air containing dust that has passed through the first filter (210) moves to the second filter (220) through the first air flow path (310). In addition to the air flow path formed by pipes, etc., the interior of the case part (110) is appropriately divided into internal spaces such as partitions to induce the flow of gas, and since the structure of such partitions, etc. can be easily understood by a person with ordinary knowledge through drawings, a detailed description is omitted. It is also possible to equip the first air flow path (310) with an air flow meter (311) capable of measuring the amount of air blowing and utilize it for controlling the blower (300).

[0094] In the case of the second filter (220), particles accumulate on the outer surface, and the air from which the particles have been filtered passes through the inner side of the second filter (220) and is then supplied to the inner side of the third filter (230).

[0095] The second filter (220) is sufficient to have the performance to filter out large particles of dust generated by cutting scrap, and the third filter (230) is preferably a HEPA filter capable of removing fine particles of about 10 μm or ultra-fine particles of 2.5 μm or less.

[0096] The second filter (220) and the third filter (230) are also equipped with differential pressure sensors (not shown). Accordingly, the cleaning and replacement times of the filters can be determined.

[0097] In the case of the second filter (220), compressed air is sprayed into the inside of the filter using the second filter cleaner (221), and as the sprayed compressed air passes from the inside to the outside of the filter, dust accumulated on the outside of the filter is removed, and the dust removed from the second filter (220) falls into the dust hopper (410) and is collected. It is preferable to attach a vibration generator (411) to the outer surface of the dust hopper (410) to remove dust attached to the inner surface of the dust hopper (410).

[0099] The blower (300) sucks in air purified by passing through the third filter (230) and discharges it to the outside through the air outlet (120).

[0101] The scrap compression device and its surrounding space, which will be explained later, are susceptible to contamination as dust attached to the scrap falls off.

[0102] It is preferable to form a scrap dust conveying unit comprising an intake port on the side of this space and a second air flow path (320) formed on the side of the second filter (220) as the exhaust port. In this embodiment, intake ports are placed in two locations, but intake ports can be placed in multiple locations as needed.

[0104] As explained above, it is preferable that the timing for replacing or cleaning the first to third filters be determined in the following manner.

[0106] The airflow of the above-mentioned blower is divided into multiple stages up to the maximum airflow, and the value Pv determined by using the initial differential pressure Pinit and final differential pressure Pmax of the filter according to the airflow of each stage, the value F according to the filter usage type, and the safety margin Pv as variables

[0107] When the differential pressure measured by the differential pressure sensors of the first to third filters is compared with the measured differential pressure, and the measured differential pressure reaches the determined value Pv, the airflow is increased to the next level or the filter is cleaned or replaced.

[0109] The final differential pressure Pmax of the filter is the amount of change at the inflection point where the differential pressure of the filter changes rapidly based on the initial differential pressure Pinit, and is set to 55% of the maximum static pressure Ps of the blower.

[0110] Next, the setting value F according to the usage type of the filter is determined as 0.5 for general use, 0.7 for maximum filter usage, and 0.3 for minimum filter usage.

[0111] The initial differential pressure of the filter, Pinit, is the differential pressure measured when a new filter is inserted, and the safety margin Psafe is set within the range of 0.1 to 0.20 kPa.

[0113] The pressure Pcal for calculation is determined by the following equation (1), and

[0115] Pcal = Pmax / F + Pinit ----------(1)

[0117] It is preferable that the determined value Pv be determined by the following equation (2).

[0119] Pv = Pinit + (Pcal -Pnit)*F -Psafe ----------(2)

[0121] When the differential pressure measured by the differential pressure sensor reaches the value Pv determined by the above equation (2), the airflow is increased to the next level, or the filter is cleaned or replaced.

[0123] In one embodiment of the present invention, a calculation example for the second filter is as follows.

[0124] Let Ps be the maximum static pressure of the blower when the intake port is closed, and the static pressure ratio, which is the ratio of the final differential pressure Pmax, be set to 55%, and

[0125] If the airflow of the blower is divided into 7 stages, the maximum static pressure Ps at that time is measured, and the final differential pressure Pmax is calculated, it is as shown in the following [Table 1].

[0127] Blower airflow level Maximum static pressure Ps (kPa) Final differential pressure Pmax (kPa) Lv. 1 1.38 0.76 Lv. 2 1.60 0.88 Lv. 3 1.82 1.00 Lv. 4 2.06 1.13 Lv. 5 2.32 1.28 Lv. 6 2.60 1.43 Lv. 7 2.90 1.60

[0129] If you want to minimize filter usage (i.e., shorten the cycle for replacing / cleaning the filter or increasing the airflow), F is set to 0.7.

[0131] When a new filter is installed, the initial differential pressure Pinit measured for each airflow level is as shown in the following table [2], and is obtained by the above equation (1).

[0133] Blower airflow level Initial differential pressure Pinit (kPa) Calculation pressure Pcal (kPa) Lv. 1 0.70 1.78 Lv. 2 0.79 2.05 Lv. 3 0.83 2.26 Lv. 4 0.93 2.55 Lv. 5 1.03 2.85 Lv. 6 1.12 3.16 Lv. 7 1.15 3.43

[0136] The safety margin Psafe is determined according to the range of maximum static pressure as shown in [Table 3] below.

[0138] Maximum static pressure range Ps (kPa) Safety Margin Psafe (kPa) ~ 3.5 0.1 3.6 ~ 6.5 0.15 6.6 ~ 24 0.2

[0140] In this embodiment, the maximum static pressure is 2.9 kPa at blower airflow Lv.7, so Psafe is 0.1 kPa.

[0142] Accordingly, the value Pv determined according to the above equation (2) is obtained as shown in the following [Table 4].

[0144] Blower airflow level Determined value Pv (kPa) Lv. 1 1.36 Lv. 2 1.57 Lv. 3 1.73 Lv. 4 1.96 Lv. 5 2.21 Lv. 6 2.45 Lv. 7 2.65

[0146] If the normal operating airflow level when the collection device is first operated is Lv. 2, it is determined to be operating normally until the measured differential pressure, when looking only at the second filter, reaches the determined value Pv 1.36 kPa; if it exceeds this, measures such as increasing the airflow by one level or operating the second filter cleaner to remove dust from the second filter are taken. Additionally, if the safety operation level is set to Lv. 5, the filter is replaced when the measured differential pressure reaches the determined value Pv 2.21 kPa.

[0148] Meanwhile, FIGS. 9 and 10 are diagrams showing the scrap compression process of a collection device of one embodiment of the present invention.

[0149] As shown in FIG. 9(a), scrap introduced into the collection device through the screen suction port (110) is collected through the scrap hopper (510). A scrap compression device (600) for compressing the collected scrap is placed at the bottom of the screen hopper. A first separator (520) is installed to open and close the space between the scrap compression device (600) and the scrap hopper (510). During scrap collection, the first separator (520) may block or open the space between the scrap compression device (600) and the scrap hopper (510). The scrap compression device (600) compresses the scrap by means of a pressure plate (610). The pressure plate (610) is driven by a drive unit consisting of a guide rod (621), a power transmission mechanism (622) such as a linear gear, and a driving source (623) such as a motor.

[0151] The scrap compression device (600) compresses the scrap loaded in the space formed by the second separator (630), the first separator (510), and the pressure plate (600) installed on the side of the scrap discharge port (130), and discharges it outside the collection device.

[0153] When a certain amount of scrap is supplied from the scrap hopper (510) and the space is filled with a certain amount of scrap, as shown in FIG. 9(b), the first separator blocks the space between the scrap hopper (510) and the scrap compression device (600) so that the scrap is no longer supplied to the scrap compression device (600).

[0155] Next, the pressure plate (610) moves toward the second separator (630) and compresses the scrap. The first separator (520) and the second separator (630) are operated by separate driving sources, and a separate explanation regarding this is omitted.

[0157] After the scrap is compressed, as shown in FIG. 10(a), the second separator (620) rises to open the scrap discharge port, the pressure plate (610) pushes the compressed scrap out of the collection device, and the compressed scrap is loaded onto the cart (160).

[0158] Afterwards, as shown in FIG. 10(b), the pressure plate (610) retracts and the second separator (630) descends to form a space where scrap can be accumulated, and

[0159] As shown in Fig. 10(c), the first separator (520) is opened so that scrap is dropped into the space and the collection of straps continues.

[0161] The present invention, as described above, is not limited by the detailed description and is naturally defined by the claims. Explanation of the symbols

[0163] 1 : Scrap compression and collection device 10 : Scrap 100: Case section 110: Scrap intake 120: Air exhaust 130 : Scrap discharge port 140 : Dust discharge port 150 : Control panel 160 : Cart 210: 1st filter 211: 1st filter cleaner 220: 2nd filter 221: 2nd filter cleaner 230: 3rd filter 221, 231: Filter replacement unit 300: Blower 310: First air flow path 311: Air flow meter 320: Second air flow path 410 : Dust hopper 411 : Vibration generator 510: Scrap hopper 520: 1st separator 600: Scrap compression device 610: Pressure plate 621: Guide rod 622 : Power transmission mechanism 623 : Driving source 630 : Second separator

Claims

Claim 1 A recycling scrap compression and collection device comprising: a scrap suction port for sucking scrap from a processing device that generates recyclable scrap; an air discharge port for releasing dust-removed air to the outside; a scrap discharge port for releasing compressed scrap to the outside; a dust discharge port for releasing collected dust to the outside; and a case portion equipped with a control panel, wherein inside the case portionA first filter disposed above the scrap suction port; a scrap hopper disposed below the scrap suction port for collecting falling scrap; a scrap compression device located below the scrap hopper for compressing the collected scrap; a first differential pressure sensor for measuring the differential pressure generated by the first filter; a first filter cleaning unit for applying physical force to the first filter to detach scrap attached to the first filter when it is determined that the first filter is contaminated; an airflow meter for measuring the airflow rate of air passing through the first filter; a second filter for removing dust from the air passing through the first filter; a second differential pressure sensor for measuring the differential pressure of the second filter; a third filter for removing fine dust from the air passing through the second filter; a third differential pressure sensor for measuring the differential pressure of the third filter; and when it is determined that the second filter is contaminated, applying physical force to the second filter to detach dust attached to the second filter A recycling scrap compression and collection device capable of separating dust, comprising: a second filter cleaning unit for removing dust; a dust hopper in which dust removed from the second filter is collected and a dust discharge port is connected to the lower side; and a blower that generates pressure to suck in scrap and discharges air that has passed through the third filter to the outside through the air discharge port; wherein the blowing volume of the blower is divided into a plurality of stages up to a maximum blowing volume, and a value Pv determined using variables such as the initial differential pressure Pinit of the filter according to each stage of the blowing volume, the final differential pressure Pmax, the value F according to the usage form of the filter, and the safety margin Pv, ​​is compared with the differential pressure measured by the differential pressure sensors of the first to third filters, respectively, and when the measured differential pressure reaches the determined value Pv, the blowing volume is increased to the next stage or the filter is replaced. Claim 2 A recycling scrap compression and collection device capable of separating dust, characterized in that, in claim 1, it further comprises a first separator that separates the space between the scrap compression device and the scrap hopper device. Claim 3 A recycling scrap compression and collection device capable of dust separation, characterized in that, in claim 1, it further comprises a scrap dust conveying unit that sucks dust from the scrap compression device and the scrap conveying device and conveys it to the second filter side. Claim 4 A recycling scrap compression collection device capable of dust separation, characterized in that, in claim 1, a vibration generator is attached to the outer surface of a dust hopper to drop dust attached to the inner surface of the dust hopper. Claim 5 delete Claim 6 In claim 1, the determined value Pv is determined by the following equation (1), wherein the final differential pressure of the filter Pmax is 55% of the maximum static pressure Ps of the blower, the filter usage type F is one of 0.5 for general use, 0.7 for maximum use, or 0.3 for minimum use, the initial differential pressure of the filter Pinit is the differential pressure measured when a new filter is inserted, and the safety margin Psafe is set within the range of 0.1 to 0.20 kPa to determine the pressure for calculation Pcal, and Pcal = Pmax / F + Pinit ----------(1) The determined value Pv is determined by the following equation (2).

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