KR20170051885A - Washing Apparatus in Powder Coating System - Google Patents

Washing Apparatus in Powder Coating System Download PDF

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Publication number
KR20170051885A
KR20170051885A KR1020150153529A KR20150153529A KR20170051885A KR 20170051885 A KR20170051885 A KR 20170051885A KR 1020150153529 A KR1020150153529 A KR 1020150153529A KR 20150153529 A KR20150153529 A KR 20150153529A KR 20170051885 A KR20170051885 A KR 20170051885A
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South Korea
Prior art keywords
cleaning
washing
tank
unit
cleaning unit
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KR1020150153529A
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Korean (ko)
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KR101822023B1 (en
Inventor
한정석
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한정석
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Priority to KR1020150153529A priority Critical patent/KR101822023B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/041—Cleaning travelling work
    • B08B3/042—Cleaning travelling work the loose articles or bulk material travelling gradually through a drum or other container, e.g. by helix or gravity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Abstract

The present invention relates to a cleaning apparatus for a powder coating system, and more particularly, to a cleaning apparatus for a powder coating system, in which an inlet through which a conveying member of a conveying device for conveying an object to be painted for each step for powder coating and a draw- A washing unit formed on the other side; First and second cleaning units respectively formed on the inner inlet side and the outlet side of the cleaning unit and adapted to clean an object to be transferred while being fixed to the transfer unit; And an organic cleaning unit formed between the first cleaning unit and the second cleaning unit and adapted to clean the organic matter of the subject to be firstly cleaned by the first cleaning unit.
Therefore, in the powder coating system, the object to be cleaned is cleaned with washing water and purified water which are harmless to the human body in the previous stage of powder coating, and the washing water and the purified water are collected again into the first and second washing and purifying tanks. The present invention provides a cleaning apparatus for a powder coating system which can reduce the cost by allowing the surface of the coating object to be cleaned to be cleaned by recycling the purified water in the purified water tank in which the organic matter is decomposed by the microorganism do.

Figure P1020150153529

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a powder coating system,

The present invention relates to a cleaning apparatus for a powder coating system, and more particularly, to a cleaning apparatus for a powder coating system, in which oil, organic matter, and the like on the surface of an object to be coated are stored by being stored together with a surfactant a microorganism that cleans oil, oil, The surfactant is washed, and the oil, organic matter and the like contained in the surfactant are decomposed by the stored microorganisms, so that the surfactant can be continuously circulated and the respective steps of the degreasing process can be sequentially performed And to a cleaning apparatus for a powder coating system which enables automation of the degreasing process.

Generally, a powder coating is a technique mainly used for coating a surface of a metal, in which a powder coating electrically charged with (-) electricity is applied by applying a high voltage to the surface of the coating and electrically attached, It is heated, melted and cured to be painted.

Such a powder coating does not use a solvent, so there is no risk of poisoning by a solvent or a fire, and it does not cause pollution, and has no phenomenon of wrinkles or runoff occurring when a liquid paint is used, There is an advantage that a coating film can be formed.

Therefore, it has been gradually replaced by a powder coating method in which a coating liquid is applied by using a liquid coating material in a liquid state, and facilities such as street lamps and traffic lights, which are commonly found in the neighborhood, are made of metal materials I can do it.

Here, in the powder coating system for powder coating as described above, the surface of the object to be coated, contaminants and organic matters are washed through a washing process of washing the object before powder coating of the object, It is preferable that the surface of the water is made smooth and clean so that a uniform and high quality powder coating is achieved when powder coating is performed.

Conventionally, in order to remove oils, contaminants, organic substances and the like on the surface of an object to be coated, a surfactant is used to remove oil from the surface of the object to be painted, followed by a degreasing process comprising cleaning, draining and drying Powder coating is performed.

However, since the surfactant used in the degreasing process contains the oil, it is difficult to use the surfactant for a long time. In the degreasing process, a separate cleaning operation using cleaning water before and after the cleaning operation using the surfactant, There was.

In order to solve the above-described problems, the present invention provides a method for removing oil, organic matter, and the like contained in a surface active agent after washing, wherein the degreasing process for cleaning the oil, oil, It is an object of the present invention to provide a cleaning apparatus for a powder coating system which enables the cleaning operation to be performed by allowing the surfactant to circulate continuously by storing the microorganism to be decomposed together with the surfactant.

The above object is achieved by a cleaning device for a powder coating system, comprising: an inlet port (202) in which a conveying member (100) of a conveying device for conveying the object (A) A washing unit 200 formed at one side and the other side, respectively, The first cleaning unit is configured to clean the object to be coated A, which is formed on the side of the inner inlet 202 and the side of the outlet 204 of the cleaning unit 200, 210, a second cleaning unit 260; An organic cleaning unit 230 which is formed between the first cleaning unit 210 and the second cleaning unit 260 and is adapted to clean the organic matter of the object A first washed by the first cleaning unit 210, ) Of the powder coating system.

The first washing unit 210 includes a first washing tank 212 for collecting washing water for washing the object A; A first supply pipe 214 connected to the inside of the first cleaning unit 210 from the first cleaning tank 212 to supply wash water; At least one first cleaning pipe (216) branched from the first supply pipe (214) and installed in the side and upper parts of the first cleaning part (210); At least one first discharge hole (218) penetrating through the first cleaning pipe (216) toward the inside of the first cleaning part (210); A first pump 220 installed between the first supply pipe 214 and the first cleaning tank 212 to supply the cleaning water of the first cleaning tank 212 to the first supply pipe 214; A first collecting pipe 222 for communicating the lower part of the first washing part 210 and the first washing tank 212 to allow the washing water discharged into the first washing part 210 to be collected again into the first washing tank 212, )and; A first temperature controller (not shown), which is installed in the first washing tank 212 and maintains a temperature of 60 ° C to 65 ° C in the first washing tank 212, and includes a temperature detector, a heating unit, .

The apparatus may further include a first nozzle 224 coupled to the first discharge hole 218 to discharge the discharged wash water to a predetermined angle range.

The second washing unit 260 may include a second washing tank 262 for collecting washing water for washing the object A; A second supply pipe (264) connected to the inside of the second cleaning unit (260) from the second cleaning tank (262) to supply wash water; At least one second cleaning pipe (266) branched from the second supply pipe (264) and installed at the side and top of the second cleaning unit (260); At least one second discharge hole (268) formed through the second cleaning pipe (266) toward the inside of the second cleaning portion (260); A second pump 270 installed between the second supply pipe 264 and the second cleaning tank 262 to supply the cleaning water of the second cleaning tank 262 to the second supply pipe 264; A second collecting pipe 272 for communicating the lower part of the second washing part 260 and the second washing tank 262 so as to collect the washing water discharged into the second washing part 260 into the second washing tank 262, )and; A second temperature controller (not shown), which is installed in the second washing tank 262 and maintains a temperature of 80 ° C to 95 ° C in the first washing tank 212, includes a temperature detector, a heating unit, .

The second nozzle 274 may further include a second nozzle 274 coupled to the second discharge hole 268 to discharge the discharged wash water to a predetermined angle range.

In addition, the organic substance cleaning unit 230 includes a purification tank 232 for collecting purified water in which a microorganism decomposing organic matter and a surfactant are mixed to clean the object to be coated A; A third supply pipe 234 connected to the inside of the organic material cleaning unit 230 from the purification tank 232 to supply purified water; At least one third cleaning pipe (236) branched from the third supply pipe (234) and installed at the side and top of the organic material cleaning unit (230); At least one third discharge hole (238) formed through the third cleaning pipe (236) toward the inside of the organic material cleaning unit (230); A third pump 240 installed between the third supply pipe 234 and the organic material washing tank to supply the purified water of the organic material washing tank to the third supply pipe 234; A third collector pipe 242 for communicating the lower part of the organic material cleaning unit 230 and the purification tank 232 in order to collect the purified water discharged into the organic material cleaning unit 230 into the purification tank 232; And a third temperature controller (not shown) installed in the purifier 232 to maintain the purified water inside the purifier 232 at 38 ° C to 43 ° C and comprising a temperature detector, a heating unit, and a heating controller.

The third nozzle 244 may further include a third nozzle 244 coupled to the third discharge hole 238 to discharge the discharged washing water to a predetermined angle range.

Here, it is preferable that the third nozzle 244 is coupled to the third cleaning pipe 236 such that the purified water to be injected is set in a different angular range.

A hanger 114 rotatably mounted on the bracket 112 coupled to the conveying member 100 to fix the object A; And a drive motor 116 installed on the bracket 112 to transmit the power to rotate the hanger 114. [

The present invention relates to a method and apparatus for cleaning a surface of an object to be treated, in which a degreasing process for cleaning oil, oil, organic matter, etc. is sequentially performed in a stepwise manner, and a microorganism decomposing oil, And maintains the temperature at which the strain is actively active, thereby enabling the surfactant to be circulated continuously, thereby automating the degreasing process.

1 is a sectional view showing a cleaning apparatus of a powder coating system according to the present invention.
2 is a cross-sectional view taken along line A-A of Fig. 1 showing a cleaning apparatus of a powder coating system according to the present invention.

Hereinafter, the configuration of the present invention will be described with reference to FIGS. 1, 2, and 3.

1, the cleaning apparatus for a powder coating system according to the present invention includes a transfer member 100 of a transfer device (not shown) for transferring an object A for each powder coating step, (200) having an inlet (202) through which a conveying member (a chain, a conveyor belt, etc.) is drawn and an outlet (204) through which the conveying member (100) is drawn out are formed on one side and the other side, respectively.

The inlet 202 and the outlet 204 can pass through the cleaning unit 200 while being conveyed along with the conveyance of the conveying member 100 while the object A is fixed to the conveying member 100 1 and 2, the conveying member 100 drawn into the inlet 202 and drawn out to the outlet 204 may be formed to have an inlet 202 and an outlet 204, The organic cleaning unit 230 and the second cleaning unit 260 to be conveyed to the top of the conveying member 100 so that the object A to be hung on the hanger of the conveying member 100 will be described below. It is preferable to pass through the outlet 204 sequentially.

1, the washing unit 200 is divided into a predetermined size space by a side of the inlet 202, a side of the outlet 204 and a center of the inlet 202, An organic material cleaning unit 230 is provided at the center, and a second cleaning unit 260 is provided at the outlet 204 side.

The first cleaning unit 210 may be configured such that a first cleaning tank 212 for collecting cleaning water for cleaning the object A is provided outside the cleaning unit 200, A first supply pipe 214 is connected to the inside of the first cleaning unit 210 from the cleaning tank 212 and a first pump 220 is installed to the first cleaning unit 210 and the first supply pipe 214, So that the washing water in the first washing tank 212 is supplied into the first washing tank 212 through the first supply pipe 214.

As shown in FIG. 1, a plurality of first cleaning pipes 216 are connected to the first supply pipe 214, and a plurality of first cleaning pipes 216 are connected to the first supply pipe 214. And the first cleaning pipe 216 is piped to the ceiling via the inner wall of the first cleaning part 210. [

A plurality of first discharge holes 218 are formed in the first cleaning pipe 216 so that the cleaning water supplied to the first supply pipe 214 is discharged to the first discharge hole 218 of the first cleaning pipe 216 The surface of the object A to be conveyed along the conveying member 100 is washed by the washing water.

In this case, the first discharge hole 218 is provided with a nozzle capable of adjusting the discharging range or the discharging range of the discharging washing water, thereby widening the spraying range of the washing water, so that the washing water is uniformly sprayed on the object A It is preferable to allow the coating material A to be washed.

1 and 2, a first collector pipe 222 is installed at a lower portion of the first cleaning unit 210 so as to be connected to the first cleaning vessel 212, So that the washing water discharged into the first washing tank 212 is collected again through the first collecting pipe 222.

The first washing tank 212 is provided with a temperature detecting unit for detecting the temperature of the washing water stored therein, a heating unit for heating the washing water, a heating unit for ON / OFF controlling the heating unit to maintain the washing water in the range of 60 ° C to 65 ° C A first temperature control unit including a controller is provided so that the washing water stored in the first washing tank 212 always maintains a temperature range of 60 ° C to 65 ° C.

The discharging or spraying of the washing water stored in the first washing tank 212 to the object to be coated A by heating the object to a temperature of 60 ° C to 65 ° C primarily cleans the contaminants on the surface of the object A It is a preheating process so that the oil and fat can be easily cleaned by the surfactant sprayed subsequently.

The first washing unit 210, the second washing unit 260, and the organic material washing unit 230 have the same structure as the first embodiment. However, in order to clearly separate each process, do.

That is, the second cleaning unit 262, the second supply pipe 264, the second pump 270, the second cleaning pipe 266, the second discharge hole 268, the second cleaning unit 266, The second temperature control unit is connected to the first cleaning unit 212 of the first cleaning unit 210, the first supply pipe 214, the first pump 220, the first cleaning unit 212, The first nozzle 224 and the first collecting pipe 222 and the first temperature control unit of the organic material cleaning unit 230 and the purification tank 232, the third supply pipe 234, 3 pump 240, the third cleaning pipe 236, the third discharging hole 238, the third nozzle 244, the third collecting pipe 242 and the third temperature control unit are also connected to the first cleaning unit 210 The first cleaning pipe 212, the first supply pipe 214, the first pump 220, the first cleaning pipe 216, the first nozzle 224, the first collector pipe 222, and the first temperature controller The detailed description of the structure of the second washing unit 260 and the organic washing unit 230 will be omitted in the description of the first washing unit 210. [

The surface active agent stored in the purification tank 232 of the organic material cleaning unit 230 is washed with the organics and re-collected through the third collector pipe 242, And the surfactant containing the microorganisms stored in the inside of the purification tank 232 can be maintained at a temperature of 38 ° C to 43 ° C by a third temperature controller The first washing unit 210 and the second washing unit 260 are different from each other.

The washing water (water) stored in the purifying tank 232 of the second washing unit 260 is performed after the object to be coated A is washed in the organic washing unit 230 by the surfactant containing microorganisms It is possible to maintain the temperature of 80 ° C to 95 ° C in order to completely clean the surfactant and the microorganisms remaining on the object (A) so that the object (A) can be cleaned by the high temperature washing water .

Therefore, the object A to be conveyed in a state fixed to the hanger of the conveying member 100 is firstly washed by the washing water heated to 60 ° C to 65 ° C in the first washing unit 210, When the object A is transferred to the cleaning unit 230, the object is heated to 38 ° C to 43 ° C, and the secondary organic material is washed by a surfactant containing microorganisms to remove oils, oils, and organic substances. 230 are transferred to the second washing unit 260, then washed three times by the high temperature washing water heated to 80 ° C to 95 ° C, and then transferred to the drying process .

The third nozzle 244 coupled to the third branch pipe 236 of the organic material washing tank 230 is also set to spray the purified water in a predetermined range. The first nozzle 224, the second nozzle 274 , But in some cases all of the third nozzles 244 are coupled at different injection angles, not at the same injection angle as shown in Fig.

For example, the third nozzle 244 coupled to any one of the third cleaning pipes 236 may be configured such that the purified water is sprayed in the 1 o'clock direction or the 11 o'clock direction, The third nozzle 244 is sprayed with purified water in a direction of 3 o'clock or 9 o'clock and the third nozzle 244 coupled to another third washing pipe 236 injects purified water in a direction of 5 o'clock or 7 o'clock, So that the purified water can be uniformly sprayed on the conveyed object (A) to be conveyed.

3, since some of the reference numerals are omitted and the front view is omitted, as shown in FIG. 3, when the third nozzle 236 is viewed, the injection angle of the purified water is varied at various angles It may appear to be sprayed at the same time.

Since the purified water is sprayed in the third washing pipe 236 at different angles and at different angles, the purified water is uniformly sprayed on the object A as a whole, thereby enabling efficient washing.

The object to be coated A described above is fixed or fixed to the bracket 112 coupled to the conveying member 100. At this time, The hanger 114 is rotatably mounted on the bracket 112 and the hanger 114 is rotated by the drive motor 116 so that the object A fixed to the hanger 114 slowly rotates It is preferable that the washing water and the purified water are uniformly sprayed on the object A to be efficiently washed.

As described above, the present invention not only enhances the cleaning power by washing the contaminants, oils, oils and organic substances in the object (A) step by step, but also decomposes organic substances washed with the surfactant into microorganisms, Allows the wash water to be circulated continuously.

100: feeding member 200: washing unit
202: inlet 204: outlet
210: first washing unit 212: first washing tank
214: first supply pipe 216: first cleaning pipe
218: first discharge hole 220: first pump
222: first collecting pipe 224: first nozzle
230: organic washing unit 232: septic tank
234 third supply pipe 236 third wash pipe
238: Third discharge hole 240: Third pump
242: Third collecting tube 244: Third nozzle
260: second washing section 262: second washing tank
264: second supply pipe 266: second cleaning pipe
268: second discharge hole 270: second pump
272: Second collector tube 274: Second nozzle

Claims (9)

A cleaning apparatus for a powder coating system,
An inlet 202 into which the conveying member 100 of the conveying device for conveying the object A is fed and a draw-out port 204 through which the conveying member 100 is drawn are provided at one side and the other side, respectively, A formed cleaning unit (200);
The first cleaning unit is configured to clean the object to be coated A, which is formed on the side of the inner inlet 202 and the side of the outlet 204 of the cleaning unit 200, 210, a second cleaning unit 260;
An organic cleaning unit 230 which is formed between the first cleaning unit 210 and the second cleaning unit 260 and is adapted to clean the organic matter of the object A first washed by the first cleaning unit 210, ) Of the powder coating system. The method according to claim 1,
The first cleaning unit 210 may include a first cleaning unit 210,
A first washing tank (212) for collecting washing water for washing the object (A);
A first supply pipe 214 connected to the inside of the first cleaning unit 210 from the first cleaning tank 212 to supply wash water;
At least one first cleaning pipe (216) branched from the first supply pipe (214) and installed in the side and upper parts of the first cleaning part (210);
At least one first discharge hole (218) penetrating through the first cleaning pipe (216) toward the inside of the first cleaning part (210);
A first pump 220 installed between the first supply pipe 214 and the first cleaning tank 212 to supply the cleaning water of the first cleaning tank 212 to the first supply pipe 214;
A first collecting pipe 222 for communicating the lower part of the first washing part 210 and the first washing tank 212 to allow the washing water discharged into the first washing part 210 to be collected again into the first washing tank 212, )and;
And a first temperature control unit installed in the first washing tank 212 to maintain the washing water stored in the first washing tank 212 at 60 ° C to 65 ° C and including a temperature detecting unit, a heating unit, and a heating control unit Of the powder coating system. 3. The method of claim 2,
Further comprising a first nozzle (224) coupled to the first discharge hole (218) to discharge the discharge water discharged in a predetermined angle range. The method according to claim 1,
The second cleaning unit 260 may include:
A second washing tank (262) for collecting wash water for washing the object (A);
A second supply pipe (264) connected to the inside of the second cleaning unit (260) from the second cleaning tank (262) to supply wash water;
At least one second cleaning pipe (266) branched from the second supply pipe (264) and installed at the side and top of the second cleaning unit (260);
At least one second discharge hole (268) formed through the second cleaning pipe (266) toward the inside of the second cleaning portion (260);
A second pump 270 installed between the second supply pipe 264 and the second cleaning tank 262 to supply the cleaning water of the second cleaning tank 262 to the second supply pipe 264;
A second collecting pipe 272 for communicating the lower part of the second washing part 260 and the second washing tank 262 so as to collect the washing water discharged into the second washing part 260 into the second washing tank 262, )and;
And a second temperature controller installed in the second washing tank 262 to maintain the washing water stored in the first washing tank 212 at 80 ° C to 95 ° C and comprising a temperature detector, Of the powder coating system. 5. The method of claim 4,
Further comprising a second nozzle (274) coupled to the second discharge hole (268) to discharge the discharged washing water to a predetermined angle range. The method according to claim 1,
The organic material cleaning unit 230 may include:
A purified water tank 232 for collecting purified water mixed with a microorganism decomposing organic matter and a surfactant for washing the object to be coated A;
A third supply pipe 234 connected to the inside of the organic material cleaning unit 230 from the purification tank 232 to supply purified water;
At least one third cleaning pipe (236) branched from the third supply pipe (234) and installed at the side and top of the organic material cleaning unit (230);
At least one third discharge hole (238) formed through the third cleaning pipe (236) toward the inside of the organic material cleaning unit (230);
A third pump 240 installed between the third supply pipe 234 and the organic material washing tank to supply the purified water of the organic material washing tank to the third supply pipe 234;
A third collector pipe 242 for communicating the lower part of the organic material cleaning unit 230 and the purification tank 232 in order to collect the purified water discharged into the organic material cleaning unit 230 into the purification tank 232;
And a third temperature control unit installed in the purifying tank 232 such that the purified water stored in the purifying tank 232 maintains a temperature of 38 ° C. to 43 ° C. and includes a temperature detecting unit, a heating unit, and a heating control unit. Cleaning system of the system. The method according to claim 6,
And a third nozzle (244) coupled to the third discharge hole (238) for spraying purified water discharged in a predetermined angle range. 8. The method of claim 7,
Wherein the third nozzle (244) is coupled to the third cleaning pipe (236) such that the purified water to be sprayed is set to a different angular range. The method according to claim 1,
A hanger 114 rotatably installed on a bracket 112 coupled to the conveying member 100 to fix the object A;
Further comprising a drive motor (116) mounted on the bracket (112) to transmit power to rotate the hanger (114).
KR1020150153529A 2015-11-03 2015-11-03 Washing Apparatus in Powder Coating System KR101822023B1 (en)

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KR1020150153529A KR101822023B1 (en) 2015-11-03 2015-11-03 Washing Apparatus in Powder Coating System

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KR101822023B1 KR101822023B1 (en) 2018-01-25

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KR20230175037A (en) 2022-06-22 2023-12-29 노청환 Metal surface oil removal device

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JP3009879B1 (en) * 1998-09-21 2000-02-14 株式会社東洋ウチナミテクノクリーン Underwater aerial underwater cleaning equipment

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