KR20200121979A - washing devices of aluminium chip and recovery systems of aluminium chip - Google Patents

Abstract

The present invention relates to an aluminum chip cleaning device and an aluminum chip recovering system using the same, wherein the aluminum chip cleaning device can recycle an aluminum chip by more cleanly cleaning cutting oil on the aluminum chip generated during a process with a small amount of cleaning water. To this end, the aluminum chip cleaning device includes a rotation drum, a cleaning tank, a water supply pipe, and a drain pipe.

Description

Aluminum chip washing device and aluminum chip recovery system using the same TECHNICAL FIELD [1] Washing devices of aluminum chip and recovery systems of aluminum chip

The present invention relates to an aluminum chip cleaning apparatus and a recovery system, and more particularly, to an aluminum chip cleaning and recovery system that enables cutting oil embedded in aluminum chips generated during processing to be cleaned and recycled more cleanly with a small amount of washing water. .

Aluminum is one of the most widely used metals after iron because it is light and does not corrode well.

Aluminum is mainly used as an aluminum alloy alloyed with other metals due to its c lightness but low strength. Aluminum alloy is used for structural materials such as aircraft, buildings, automobiles, kitchen utensils, machine parts, special chemical facilities and chemical storage tanks, furniture and roofs. It is widely used as materials, various electrical and electronic devices, wires, coins, various packaging materials including aluminum foil, and various beverage containers.

As such aluminum alloys cut and cut unnecessary parts during processing, many aluminum chips are generated, and various technologies for recycling metal chips including such aluminum chips are being developed, for example Patent Documents 1 to 3 There is this.

Patent Document 1 is to pressurize a crusher hopper for inserting chips, a hydraulic cylinder that compresses the input chips, a compression piston that moves up and down by this hydraulic cylinder, and a chip that has flowed into a certain shape by a hydraulic cylinder. In the chip recycling molding machine consisting of a compression molding frame for guiding a compression piston, a piston guide with a chip supply hole formed on one side, and a discharge rod for discharging the compressed chips while being moved forward and backward by a discharge cylinder, a pulverizer hopper Multiple operations to detect the position of the compression piston by means of a grinder that crushes chips supplied through the grinder, a transfer screw that transfers chips that fall through the grinder to the compression molding mold by a transfer motor, and a limit installed on the cylinder rod of the hydraulic cylinder. It consists of a mold plate with a switch, a transfer screw and a screw guide groove to guide the chip, an oil guide located under the compression mold to receive the oil flowing down, and an oil tank that stores the oil flowing through the oil guide. Chip recycling molding machine,

Patent Document 2 is a sorting device that separates waste into raw materials used for recycling and unused scrap metal according to particle size, a transfer device that transfers the raw material separated from the sorting device to a pulverizing device, and the raw material transferred from the transfer device. A pulverizing device that mixes with a solidifying agent and transfers it while crushing, a separation device that separates the raw material that has passed through the pulverization device for re-grinding and compression processing, an input transfer device that transfers the raw material for compression that has passed through the separation device to the compression molding machine A return conveying device that returns the raw material for regrinding that has not passed through to the conveying device, a compression molding machine that compresses the raw material for compression supplied from the input conveying device into a nodule, and transports the nodules compressed by the compression molding machine to the product pallet. It is a nodule manufacturing device for pig iron for steel making that recycles chips or slag composed of a discharge transfer device,

Patent Literature 3 relates to a storage yard connected through a processing device and a pipe and equipped with a plurality of heating wires, a filter mounted on a drain hole formed at the rear end of the pipe, a screw mounted inside, and a spray nozzle mounted at the tip of the pipe. In the processing chip recycling device configured including a moving device configured with installed hot wires and connected to a collection point, a dust collecting device configured to be connected to the rear end of the moving device, and a melting furnace connected to the moving device through a corrugated pipe, the pipeline It is a machined chip recycling device arranged in an angled gradient.

In this way, various metal chips including aluminum chips (hereinafter, collectively referred to as “aluminum chips”) recycling technologies are being developed, and in order to recycle such rapid chips, foreign substances on metal chips must be removed during metal processing.

In other words, since aluminum chips are embedded with cutting oil during processing, they cannot be used for high-purity alloys, so most of them are recycled as low-grade die-casting materials.If they are recycled as low-grade materials, they are compressed in a puck state and sold at a very low price. Accordingly, there is a problem that the waste of materials is severe.

In addition, when aluminum chips are reused, gas is generated due to combustion of cutting oil, soot flows into the molten metal due to incomplete combustion, and there is a problem of low recovery rate due to large amounts of dross and ash generated by oxidation.

In addition, aluminum chips are washed and recycled, but the process of disposing of pollutant substances such as cleaning agents and cutting oil used during cleaning is complicated and expensive, and wastewater generated in the process of cleaning using cleaning agents is eliminated. There is a problem that the amount of water to be treated is large, and the discharged washing water pollutes the quality of the water due to the large amount of treated water.

Republic of Korea Utility Model Registration No. 20-0159716 Korean Patent Registration No. 10-0370611 Korean Patent Registration No. 10-0872659

The present invention was developed to solve the problems of the prior art as described above, and an aluminum chip cleaning device that enables the cutting oil embedded in the aluminum chips generated during processing to be cleaned and recycled more cleanly with a small amount of washing water and using the same It is an object to provide an aluminum chip recovery system.

An aluminum chip cleaning apparatus according to the present invention for solving the above object is a cleaning apparatus for cleaning aluminum chips, comprising: a rotating drum rotated by driving a driving means; A washing tank for collecting washing water after washing the aluminum chips in the rotating drum; A water supply pipe connected to one side of the rotating drum to supply washing water into the rotating drum; It is characterized in that it comprises a drain pipe connected to one side of the washing tank to send the collected washing water to a subsequent treatment facility.

It is preferable that a door is installed on one side of the rotating drum so as to be openable, a locking device is installed at one end of the door, and a leak-proof packing is installed between the door and the rotating drum.

The aluminum chip recovery system according to the present invention is an aluminum chip recovery system including the above-described aluminum chip cleaning device, comprising: a settling tank for collecting the washing water discharged from the washing device to settle the cutting oil remaining in the washing water; A sediment collecting device for removing cutting oil from the washing water containing the cutting oil deposited on the bottom of the sedimentation tank; And a dryer for removing moisture from the washed aluminum needles. It characterized in that it comprises a transfer means for transferring the aluminum chip is installed between each device.

The sediment collecting device may include a filter that first filters cutting oil and a filter press that removes foreign substances including cutting oil remaining in the filter.

A grinder for pulverizing aluminum having a large particle among contaminated aluminum may be further installed at the front end of the cleaning device.

The aluminum chip cleaning apparatus and the aluminum chip recovery system using the same according to the present invention do not use chemical detergents, etc., by washing using only water, thereby reducing contamination and wastewater treatment costs.

That is, compared to the case of treating wastewater without sedimentation, it becomes possible to treat wastewater at a cost of only about 5-10%.

In addition, the present invention is a material in which the composition of the aluminum chips washed by washing the aluminum processing chips is alloyed to match the composition, so that the aluminum chips can be used as an ingot substitute, thereby significantly reducing the use of ingots, thereby reducing the cost of raw materials. have.

In addition, according to the present invention, when the cleaned aluminum alloy chip is used as a material, when using the fine-chuck aluminum chip, gas is prevented from being generated by combustion of cutting oil, thereby reducing contamination.

In addition, the present invention has the advantage of reducing the amount of regeneration due to the use of the cleaned aluminum chips and increasing the recovery rate.

In addition, according to the present invention, the water used for washing and the water contaminated after washing are separated into water and cutting oil through chemicals, and the water is recovered and reused for washing, so the amount of water used can be reduced. It has the effect of reducing the overall cost of disposal by additionally recovering and using and separating and disposing of oil.

1 is a perspective view of an example of an aluminum chip cleaning apparatus according to the present invention
2 is a side view of an example of an aluminum chip cleaning apparatus according to the present invention
3 is a block diagram of an aluminum chip recovery system according to the present invention

In the present invention, various changes may be made and various embodiments may be provided, and specific embodiments are illustrated in the drawings, and will be described through detailed description. However, this is not intended to limit the present invention to a specific embodiment, it is to be understood to include all changes, equivalents, or substitutes included in the spirit and scope of the present invention.

In describing each drawing, similar reference numerals have been used for similar elements. In describing the present invention, when it is determined that a detailed description of a related known technology may obscure the subject matter of the present invention, a detailed description thereof will be omitted.

According to the present invention, contaminants of aluminum chips can be more cleanly washed with a small amount of water, and environmental pollution caused by the washing water can be prevented.

The aluminum chip cleaning apparatus according to the present invention is a cleaning apparatus 10 for cleaning aluminum chips, as shown in FIGS. 1 and 2, and includes a rotating drum 11 that rotates by driving the driving means 12; A washing tank 13 for collecting washing water after washing the aluminum chips in the rotating drum; A water supply pipe 14 connected to one side of the rotating drum to supply washing water into the rotating drum; And a drain pipe 15 connected to one side of the washing tank to send the collected washing water to a subsequent treatment facility.

The rotating drum 11 is made of a cylindrical cylinder, and is sealed to prevent leakage of aluminum chips or washing water put therein.

Of course, one side is opened and the door 11d is installed to allow the aluminum chip to be inserted inside, and one end of the door is hinged to the rotating drum, and the other end is provided with a locking means 11c to prevent the door when the door is closed. The water did not leak between the and rotating drum.

The rotating drum 11 is rotated by a driving means 12 installed on one side, and the driving means 12 may be composed of a conventional motor and a thrust transmission means, and the power transmission means is a pulley and a belt, or a sprocket and a chain. Can be made.

In addition, a water supply pipe 14 for supplying washing water is installed at one side of the rotating drum, and the water supply pipe 14 may be installed through a rotating shaft of one side of the rotating drum so as to supply washing water into the rotating drum. have.

That is, as a rotary shaft rotatably supporting one side of the rotary drum is configured as a hollow shaft, and a water supply pipe is installed through the hollow shaft, the washing water can be supplied without rotating the water supply pipe even if the rotary shaft is rotated.

In addition, a leak-proof packing was installed between the door and the rotating drum to prevent leakage of washing water inside the rotating drum.

The washing tank 13 is for discharging the washing water after the aluminum chips are washed by the washing water as the rotating drum rotates, and the washing water flows into the washing tub in the process of discharging the washed aluminum chips. It is transferred to a treatment facility for post treatment.

In order to discharge the washing water stored in the washing tub 13, a drain pipe 15 is connected to one side of the washing tub.

The drain pipe 15 is preferably connected to a portion adjacent to the bottom of the washing tank, and the bottom of the washing tank is inclined toward the drain pipe so that the washing water flows toward the drain pipe.

Hereinafter, an aluminum chip recovery system including an aluminum chip cleaning device configured as described above will be described.

3 is a block diagram of an aluminum chip recovery system according to the present invention.

As shown, the aluminum chip recovery device includes a device for processing aluminum chips washed by the aluminum chip cleaning device 10 and a purification device for purifying the washing water generated when cleaning the aluminum chips. The conveying means (Cv) is installed.

That is, the aluminum chip recovery system of the present invention comprises: a cleaning device 10 for cleaning aluminum chips; A sedimentation tank 20 for collecting the washing water discharged from the washing device to settle the cutting oil remaining in the washing water; A sediment collecting device 30 for removing cutting oil from the washing water containing the cutting oil deposited on the bottom of the sedimentation tank; A dryer 40 to remove moisture from the washed aluminum needle; And a transfer means (Cv) installed between the respective devices and transferring the aluminum chips.

The cleaning device 10 is configured as described above, and the aluminum chips that have been cleaned by the cleaning device 10 are transferred to the dryer 40 by the transfer means (Cv) to be dried and then cast again. It is transported to the furnace.

The sedimentation tank 20 is a facility for purifying the washing water, and purifies and discharges the washing water discharged through a drain pipe connected to the lower portion of the washing tank 12 constituting the vacuum device.

The sediment collecting device 30 is a device for filtering foreign substances including cutting oil precipitated in the sedimentation tank, and may include a filter that first filters cutting oil and a filter press that removes foreign substances including cutting oil remaining in the filter. .

In other words, the sediment deposited in the sedimentation tank contains fine aluminum chips as well as cutting oil, and after filtering out only fine aluminum chips and cutting oil from the sediment through a filler, the sediment remaining in the filter is squeezed through a filter press. By removing foreign substances more cleanly, the filter can be used again, and the purified washing water is supplied to the washing device again, so that the aluminum chips can be washed.

The filter is one of the usual sieves and can filter out oil and fine chips, and the filter press overlaps several sieves and sieves with each other and sandwiches a sieve between them to remove washing water and foreign matter remaining in the filter. It can be removed more clearly.

In addition, a crusher 50 for pulverizing aluminum having a large particle among contaminated aluminum may be further installed at the front end of the cleaning device.

Aluminum chips may be produced in various sizes according to a method of processing aluminum, and the above-described grinder is further provided so that chips of relatively large particles among these aluminum chips can be pulverized to a smaller size to facilitate cleaning.

Hereinafter, an experiment result of an experiment on the degree of cleaning of the aluminum chips treated with the above apparatus and system will be described.

1. Dissolution test

A dissolution test was conducted by putting the processed chips in a heated molten metal in a state of microchuck, incomplete drying after washing, and completely dried after washing.

When the unwashed chips were put into the molten metal, smoke was generated for a long time, but the completely dried chips after washing were found to generate smoke only for a short period of time at the beginning of the injection.

Therefore, in order to recycle the aluminum chips, it is preferable to make the aluminum chips in a clean state through washing, and to dry them so that no moisture remains after washing, and for this purpose, the dryer described above is provided.

2. Layer separation test in the state of mixing water and cutting oil after washing

Tests were conducted using various types of chemicals to check whether the cutting oil was aggregated, and the results are shown in the picture below.

In the above photo, (a) is a chemical treatment to separate water-soluble cutting oil and water, but as the separated cutting oil is separated in a way that floats on the water, there is an inconvenience of filtering it through a separate filter from the top.

Photo (b) shows that there is an advantage in that the sediment can be easily separated by simply installing a valve at the bottom of the sedimentation tank as the cutting oil is agglomerated using a coagulant, and the coagulated cutting oil is separated into the floor in a way that it is deposited.

Photo (c) shows that the layers were separated by chemical treatment, but the layers were not easily separated and were mixed.

Accordingly, in the present invention, a cutting oil coagulant is supplied to the sedimentation tank so that the sediment sinks to the bottom of the sedimentation tank, and a valve is installed below the sedimentation tank so that it can be discharged to the sediment collection device.

However, even if the layer is separated, the sediment still contains water, so a filter is installed to filter the sediment, and the filtered water is recycled and re-input for washing, and the filter is squeezed again with a filter press. So that the water in the filter can be re-introduced for washing.

10: washing device
11: rotating drum 11d: door 11c: locking means
12: drive means 13: washing tank
14: water pipe 15: drain pipe
20: settling tank
30: sediment collection device
40: dryer
50: grinder
Cv: means of transport

Claims (5)

A cleaning device 10 for cleaning aluminum chips,
A rotating drum 11 that rotates by driving the driving means 12;
A washing tank 12 for collecting the washing water obtained by washing the aluminum chips inside the rotating drum;
A water supply pipe 13 connected to one side of the rotating drum to supply washing water into the rotating drum;
An aluminum chip washing apparatus comprising a drain pipe 14 connected to one side of the washing tank to send the collected washing water to a subsequent treatment facility. The method of claim 1,
An aluminum chip cleaning device, characterized in that a door 11d is installed at one side of the rotating drum to be openable and closed, a locking device is installed at one end of the door, and a leak-proof packing is installed between the door and the rotating drum. An aluminum chip recovery system comprising the aluminum chip cleaning device 10 of claim 1 or 2,
A sedimentation tank (20) for collecting the washing water discharged from the washing device to settle the cutting oil remaining in the washing water;
A sediment collecting device 30 for removing cutting oil from the washing water containing the cutting oil deposited on the bottom of the sedimentation tank; And
A dryer 40 for removing moisture from the washed aluminum needle;
Aluminum chip recovery system, characterized in that it comprises a transfer means (Cv) installed between each device to transfer the aluminum chips. The method of claim 3,
The sediment collecting device (30) is an aluminum chip recovery system comprising a filter that primarily filters cutting oil, and a filter press that removes foreign substances including cutting oil remaining in the filter. The method of claim 3,
An aluminum chip recovery system, characterized in that a crusher (50) for pulverizing aluminum having a large particle among contaminated aluminum is further installed at a front end of the cleaning device.

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