CN114132446A - Water surface garbage collection device - Google Patents
Water surface garbage collection device Download PDFInfo
- Publication number
- CN114132446A CN114132446A CN202111610420.8A CN202111610420A CN114132446A CN 114132446 A CN114132446 A CN 114132446A CN 202111610420 A CN202111610420 A CN 202111610420A CN 114132446 A CN114132446 A CN 114132446A
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- conveyor belt
- mother ship
- gear
- ship
- chain
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 230000005540 biological transmission Effects 0.000 claims description 45
- 230000000903 blocking effect Effects 0.000 claims description 8
- 238000011084 recovery Methods 0.000 claims description 8
- 239000002699 waste material Substances 0.000 claims 6
- 238000004140 cleaning Methods 0.000 abstract description 18
- 230000000694 effects Effects 0.000 abstract description 3
- 238000004064 recycling Methods 0.000 description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 238000007667 floating Methods 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 238000003911 water pollution Methods 0.000 description 3
- 241000282414 Homo sapiens Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000002154 agricultural waste Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010791 domestic waste Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/32—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for for collecting pollution from open water
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/12—Use of propulsion power plant or units on vessels the vessels being motor-driven
- B63H21/17—Use of propulsion power plant or units on vessels the vessels being motor-driven by electric motor
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B15/00—Cleaning or keeping clear the surface of open water; Apparatus therefor
- E02B15/04—Devices for cleaning or keeping clear the surface of open water from oil or like floating materials by separating or removing these materials
- E02B15/10—Devices for removing the material from the surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/12—Use of propulsion power plant or units on vessels the vessels being motor-driven
- B63H21/17—Use of propulsion power plant or units on vessels the vessels being motor-driven by electric motor
- B63H2021/171—Use of propulsion power plant or units on vessels the vessels being motor-driven by electric motor making use of photovoltaic energy conversion, e.g. using solar panels
Abstract
The invention aims to provide a water surface garbage collecting device, which solves the problems of poor effect, small cleaning range and low cleaning efficiency of manual cleaning of water surface garbage. The unmanned ship cooperative system comprises two unmanned ships and arresting cables, and the two unmanned ships are connected with two sides of a bow of the mother ship through the arresting cables. The invention is applied to the field of water surface garbage pollution treatment.
Description
Technical Field
The invention is applied to the technical field of water surface garbage pollution treatment, and particularly relates to a water surface garbage collecting device.
Background
Nowadays, the water is polluted due to the vigorous development of industrial science and technology and the discharge of agricultural and domestic wastes into the water. Particularly, rivers, reservoirs and open water areas in urban inland rivers, tourist attractions are greatly polluted, and water pollution not only influences the life of people and destroys ecology, but also directly harms the health of human beings and causes great damage. China already puts forward the strategy of social and economic sustainable development and physical health protection of people, and takes a series of powerful measures for treating the pollution of the whole water area.
The floating garbage on the river channel, the lake surface and the river surface is generally cleaned by adopting manual cleaning and a sewage-removing ship, the manual cleaning needs workers to sit on the ship to pick up the garbage on the ship and transport the garbage to the shore for treatment, the sewage-removing ship generally cleans the garbage on the water surface of a motor ship with a garbage collection device, and the port generally adopts a blocking cable to prevent the garbage on the water surface from floating into the port. With the industrial progress and social development, water pollution also becomes more serious, and the water pollution becomes a first environmental management problem worldwide.
But at present, the salvaging of the water garbage is difficult and serious due to the lack of professional water garbage collecting equipment. The method for recycling the garbage on the water not only needs to spend a large amount of manpower, material resources and financial resources, but also has the problems of unsatisfactory collection effect and the like. The existing large garbage collection ships have the problems of inaccurate collection action, low collection efficiency, overlarge volume, too much occupied space, unsuitability for small rivers and the like, and consume more energy and have unsatisfactory working efficiency.
The manual cleaning of the water surface garbage is large in physical consumption, the garbage cleaning amount is small, and the water surface garbage cannot be completely collected. The cleaning range of the cleaning ship is small, the movable garbage floating on the river surface is difficult to clean at one time, and the river is polluted by oil stains generated by the cleaning ship. The port blocking cables block water surface garbage, and the garbage can be accumulated to pollute river water and influence ship navigation if the garbage is not cleaned in time.
Disclosure of Invention
The invention aims at the defects and provides a water surface garbage collecting device to solve the problems of poor effect, small cleaning range and low cleaning efficiency of manual cleaning of water surface garbage.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention comprises a mother ship, an energy power system, a garbage recovery system and an unmanned ship cooperative system, wherein the energy power system comprises a solar cell panel, a storage battery, a propulsion motor and an operation motor, the solar cell panel is arranged at the top of the mother ship, the storage battery is arranged in the middle of the bottom of the mother ship, the solar cell panel is connected and conducted with the storage battery through an electric wire, the propulsion motor is arranged at the bottom of the stern of the mother ship, the propulsion motor is connected and conducted with the storage battery through an electric wire, the operation motor is arranged on the mother ship, the garbage recycling system comprises a conveyor belt module, the conveyor belt module is arranged at the bow of the mother ship, the conveying belt module is in transmission connection with the operation motor, the unmanned ship cooperation system comprises two groups of unmanned ships and blocking cables, and the two groups of unmanned ships are connected with the two sides of the bow of the mother ship through the blocking cables.
Further, the garbage recycling system further comprises a garbage collecting box which is arranged in the middle of the stern and is located at the recycling position of the conveyor belt module.
Further, the conveyor belt module comprises a first conveyor belt assembly and a second conveyor belt assembly, one side of the first conveyor belt assembly inclines downwards to be located at the bow of the mother ship, the other side of the first conveyor belt assembly inclines upwards to be in transmission connection with the running motor, the second conveyor belt assembly is arranged in the middle of the mother ship, one side of the second conveyor belt assembly is in transmission connection with the running motor, and one side of the second conveyor belt assembly is located below the other side of the first conveyor belt assembly.
Further, first conveyer belt subassembly is including collecting fill, first gear train, first chain and first conveyer belt, it sets up to collect the fill mother ship bow, first gear train rotates to set up collect and fights, first chain is around establishing on the first gear train, first conveyer belt sets up on the first chain, be provided with first rubber tooth structure on the first conveyer belt.
Further, first conveyer belt subassembly still includes electronic vaulting pole, the stiff end setting of electronic vaulting pole is in on the mother ship, the expansion end of electronic vaulting pole with collect and fight the middle part and be connected.
Furthermore, first gear train includes first drive gear and first fixed gear, first drive gear with first fixed gear sets up respectively collect the left and right sides both ends of fighting, first drive gear with the operation motor transmission is connected, first fixed gear with first drive gear passes through first chain transmission is connected.
Further, collect and fight including collecting the storehouse and collecting the mouth, it sets up to collect the storehouse the mother ship bow, it sets up to collect the mouth collect the storehouse right side, it is the funnel structure to collect the mouth.
Further, the second conveyer belt subassembly includes second gear train, second chain and second conveyer belt, the second gear train rotates and sets up on the mother ship, the second chain is around establishing on the second gear train, the second conveyer belt sets up on the second chain, be provided with second rubber tooth structure on the second conveyer belt.
Further, the second gear set comprises a second transmission gear and a second fixed gear, the second transmission gear and the second fixed gear are both arranged on the mother ship, the second transmission gear is in transmission connection with the running motor, and the second fixed gear is in transmission connection with the second transmission gear through a second chain.
According to the scheme, the mother ship adopts the lithium battery electric propulsion device, and the solar cell panel is arranged at the top of the mother ship to charge the storage battery, so that the energy is saved and the environment is protected. The water surface garbage cleaning mother ship is connected with the two unmanned ships through the arresting cables. When the device works, the device runs in a V shape, and can clean water garbage in a large area. When the mooring device is parked at a port, the mooring device is fixed on the mooring bollards through the garbage blocking cables. Can automatically intercept and clean the garbage on water.
The invention has the beneficial effects that:
1. the mother ship adopts a lithium battery electric propulsion device, the garbage collection device is driven by electric power, and the solar cell panel is arranged on the ceiling to charge the storage battery, so that the energy is saved, the environment is protected, no pollution is generated, and the labor intensity is reduced;
2. when the mother ship works, the mother ship and two remote-control unmanned ships are connected through the arresting cables to form a V-shaped structure and sail forwards, overwater garbage can be cleaned in a large area, the cleaning range is wide, and the cleaning amount is large;
3. when the mother ship is at a port, the two sides of the bow of the mother ship are fixed through the garbage blocking cables, so that the overwater garbage can be automatically intercepted and cleaned, the port has no water surface garbage, and the ship sails safely;
4, an intelligent water surface garbage recovery system is carried on the mother ship, and automatic collection work after water surface garbage is cleaned is achieved through automatic transportation of the driving belt module through power provided by the solar panel.
Drawings
FIG. 1 is a schematic perspective view of the parent vessel;
FIG. 2 is a schematic diagram of the cleaning function operation of the present invention;
fig. 3 is a schematic structural view of the first conveyor belt module;
fig. 4 is a schematic structural view of the second conveyor belt module.
Detailed Description
For a clearer understanding of the features and advantages of the present invention, reference is made to the following description, taken with the accompanying drawings, which illustrate, by way of example, the invention. In the embodiment, the invention comprises a mother ship 1, an energy power system 2, a garbage recovery system 3 and an unmanned ship cooperative system 4, wherein the energy power system 2 comprises a solar panel 5, a storage battery 6, a propulsion motor 7 and an operation motor 8, the solar panel 5 is arranged at the top of the mother ship 1, the storage battery 6 is arranged in the middle of the bottom of the mother ship 1, the solar panel 5 is connected and conducted with the storage battery 6 through an electric wire, the propulsion motor 7 is arranged at the bottom of the stern of the mother ship 1, the propulsion motor 7 is connected and conducted with the storage battery 6 through an electric wire, the operation motor 8 is arranged on the mother ship 1, the garbage recovery system 3 comprises a conveyor belt module 9, the conveyor belt module 9 is arranged at the bow of the mother ship 1, and the conveyor belt module 9 is in transmission connection with the operation motor 8, the unmanned ship cooperation system comprises two groups of unmanned ships 10 and arresting cables 11, wherein the two groups of unmanned ships 10 are connected with the two sides of the bow of the mother ship 1 through the arresting cables 11.
In this embodiment, the garbage recycling system 3 further comprises a garbage collection box 12, and the garbage collection box 12 is arranged in the middle of the stern and is located at the recycling position of the conveyor belt module 9.
In this embodiment, the conveyor belt module 9 includes a first conveyor belt assembly 13 and a second conveyor belt assembly 14, one side of the first conveyor belt assembly 13 is inclined downward and located at the bow of the mother ship 1, the other side of the first conveyor belt assembly 13 is inclined upward and is in transmission connection with the operation motor 8, the second conveyor belt assembly 14 is disposed in the middle of the mother ship 1, one side of the second conveyor belt assembly 14 is in transmission connection with the operation motor 8, and one side of the second conveyor belt assembly 14 is located below the other side of the first conveyor belt assembly 13.
In this embodiment, the first conveyor belt assembly 13 includes a collecting bucket 15, a first gear set 16, a first chain 17 and a first conveyor belt 18, the collecting bucket 15 is disposed at the bow of the mother ship 1, the first gear set 16 is rotatably disposed on the collecting bucket 15, the first chain 17 is wound on the first gear set 16, the first conveyor belt 18 is disposed on the first chain 17, and a first rubber tooth structure 19 is disposed on the first conveyor belt 18.
In this embodiment, the first conveyor belt assembly 13 further includes an electric stay 20, a fixed end of the electric stay 20 is disposed on the mother ship 1, and a movable end of the electric stay 20 is connected to the middle of the collecting hopper 15.
In the present embodiment, the first gear set 16 includes a first transmission gear 21 and a first fixed gear 22, the first transmission gear 21 and the first fixed gear 22 are respectively disposed at the left and right ends of the collecting hopper 15, the first transmission gear 21 is in transmission connection with the running motor 8, and the first fixed gear 22 is in transmission connection with the first transmission gear 21 through the first chain 17.
In this embodiment, the collecting hopper 15 comprises a collecting bin 23 and a collecting port 24, the collecting bin 23 is arranged at the bow of the mother ship 1, the collecting port is arranged at the right side of the collecting bin 23, and the collecting port 24 is of a funnel structure.
In this embodiment, the second conveyor belt assembly 14 includes a second gear set 25, a second chain 26 and a second conveyor belt 27, the second gear set 25 is rotatably disposed on the mother ship 1, the second chain 26 is wound on the second gear set 25, the second conveyor belt 27 is disposed on the second chain 26, and a second rubber tooth structure 28 is disposed on the second conveyor belt 27.
In the present embodiment, the second gear set 25 includes a second transmission gear 29 and a second fixed gear 30, the second transmission gear 29 and the second fixed gear 30 are both disposed on the mother ship 1, the second transmission gear 29 is in transmission connection with the running motor 8, and the second fixed gear 30 is in transmission connection with the second transmission gear 29 through the second chain 26.
In the present embodiment, the second gear set 25 includes a second transmission gear 29 and a second fixed gear 30, the second transmission gear 29 and the second fixed gear 30 are both disposed on the mother ship 1, the second transmission gear 29 is in transmission connection with the running motor 8, and the second fixed gear 30 is in transmission connection with the second transmission gear 29 through the second chain 26.
The working principle of the invention is as follows:
when the garbage collecting and conveying device works, garbage on the water surface is cleaned by the mother ship 1, and the garbage is collected into the garbage collecting box 12 through the conveyor belt module 9. The conveyor belt module 13 is driven by the running motor 8 to run, and the power supply of the running motor 8 is inverted by the storage battery 6. The storage battery 6 is a lithium battery and also serves as a power source of the propulsion motor 7. The storage battery 6 can be charged by an onshore power supply through a charger, and can also be charged by the solar cell panel 5 arranged on the ceiling. Two sets of unmanned ships 10 are provided with small electric propulsion devices, and the operation of the unmanned ships can be remotely controlled in the cab of the mother ship 1. The upper surface of the arresting cable 11 is provided with a buoy, and the lower end of the arresting cable is connected with a steel wire mesh with the depth of 30 cm and is immersed in water to intercept water surface garbage. The mother ship 1 and the two unmanned ships 10 are connected into a V shape through the arresting cables 11 to sail forwards, and water garbage can be cleaned in a large area. When the environment-friendly and energy-saving water surface garbage cleaning mother ship is parked at a port, the water garbage can be automatically intercepted and cleaned through the arresting cable 11.
Although the embodiments of the present invention have been described in terms of practical embodiments, they are not intended to limit the meaning of the present invention, and it should be noted that the embodiments and features in the embodiments of the present application may be combined with each other without conflict, and it will be apparent to those skilled in the art from the present description that modifications of the embodiments and combinations with other embodiments are possible.
Claims (9)
1. The water surface garbage collection device is characterized by comprising a mother ship (1), an energy power system (2), a garbage recovery system (3) and an unmanned ship cooperative system (4), wherein the energy power system (2) comprises a solar cell panel (5), a storage battery (6), a propulsion motor (7) and an operation motor (8), the solar cell panel (5) is arranged at the top of the mother ship (1), the storage battery (6) is arranged in the middle of the bottom of the mother ship (1), the solar cell panel (5) is connected and conducted with the storage battery (6) through an electric wire, the propulsion motor (7) is arranged at the bottom of the stern of the mother ship (1), the propulsion motor (7) is connected and conducted with the storage battery (6) through an electric wire, the operation motor (8) is arranged on the mother ship (1), the garbage recovery system (3) comprises a conveyor belt module (9), the conveying belt module (9) is arranged at the bow of the mother ship (1), the conveying belt module (9) is in transmission connection with the running motor (8), the unmanned ship cooperation system comprises two sets of unmanned ships (10) and blocking cables (11), and the unmanned ships (10) are connected with the two sides of the bow of the mother ship (1) through the blocking cables (11).
2. A surface waste collection device according to claim 1, wherein the waste recovery system (3) further comprises a waste collection bin (12), the waste collection bin (12) being arranged in the middle of the stern of the ship and at the recovery of the conveyor belt module (9).
3. A water surface garbage collection device according to claim 1, characterized in that the conveyor belt module (9) comprises a first conveyor belt assembly (13) and a second conveyor belt assembly (14), one side of the first conveyor belt assembly (13) is inclined downwards and positioned at the bow of the mother ship (1), the other side of the first conveyor belt assembly (13) is inclined upwards and is in transmission connection with the running motor (8), the second conveyor belt assembly (14) is arranged in the middle of the mother ship (1), one side of the second conveyor belt assembly (14) is in transmission connection with the running motor (8), and one side of the second conveyor belt assembly (14) is positioned below the other side of the first conveyor belt assembly (13).
4. A water surface garbage collection device according to claim 3, characterized in that the first conveyor belt assembly (13) comprises a collection bucket (15), a first gear set (16), a first chain (17) and a first conveyor belt (18), the collection bucket (15) is arranged at the bow of the mother ship (1), the first gear set (16) is rotatably arranged on the collection bucket (15), the first chain (17) is wound on the first gear set (16), the first conveyor belt (18) is arranged on the first chain (17), and a first rubber tooth structure (19) is arranged on the first conveyor belt (18).
5. A water surface garbage collection device according to claim 4, characterized in that the first conveyor belt assembly (13) further comprises an electric stay bar (20), the fixed end of the electric stay bar (20) is arranged on the mother ship (1), and the movable end of the electric stay bar (20) is connected with the middle part of the collection bucket (15).
6. A water surface garbage collection device according to claim 4, characterized in that the first gear set (16) comprises a first transmission gear (21) and a first fixed gear (22), the first transmission gear (21) and the first fixed gear (22) are respectively arranged at the left end and the right end of the collection bucket (15), the first transmission gear (21) is in transmission connection with the running motor (8), and the first fixed gear (22) is in transmission connection with the first transmission gear (21) through the first chain (17).
7. A surface refuse collection device according to claim 4, characterized in that the collecting hopper (15) comprises a collecting bin (23) and a collecting opening (24), the collecting bin (23) is arranged at the bow of the mother ship (1), the collecting opening is arranged at the right side of the collecting bin (23), and the collecting opening (24) is of a funnel structure.
8. A water surface waste collecting device according to claim 3, characterized in that the second conveyor belt assembly (14) comprises a second gear set (25), a second chain (26) and a second conveyor belt (27), the second gear set (25) is rotatably arranged on the mother ship (1), the second chain (26) is wound on the second gear set (25), the second conveyor belt (27) is arranged on the second chain (26), and a second rubber tooth structure (28) is arranged on the second conveyor belt (27).
9. A surface waste collection device according to claim 8, characterised in that the second gear set (25) comprises a second transmission gear (29) and a second fixed gear (30), both the second transmission gear (29) and the second fixed gear (30) being arranged on the parent vessel (1), the second transmission gear (29) being in driving connection with the running motor (8), the second fixed gear (30) being in driving connection with the second transmission gear (29) via the second chain (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111610420.8A CN114132446A (en) | 2021-12-27 | 2021-12-27 | Water surface garbage collection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111610420.8A CN114132446A (en) | 2021-12-27 | 2021-12-27 | Water surface garbage collection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114132446A true CN114132446A (en) | 2022-03-04 |
Family
ID=80383430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111610420.8A Pending CN114132446A (en) | 2021-12-27 | 2021-12-27 | Water surface garbage collection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114132446A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114889757A (en) * | 2022-05-20 | 2022-08-12 | 哈尔滨理工大学 | Chain net tipping bucket type garbage salvage ship |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201865088U (en) * | 2010-09-10 | 2011-06-15 | 浙江工业大学 | Overwater rubbish collection and classification ship |
| CN203544334U (en) * | 2013-07-31 | 2014-04-16 | 中北大学 | Small solar water area remote control trash-removal boat |
| CN209243694U (en) * | 2018-11-29 | 2019-08-13 | 青岛黄海学院 | A kind of floating on water surface anti-pollution vessel |
| CN214267907U (en) * | 2020-12-17 | 2021-09-24 | 安徽中科合鼎科技发展有限公司 | Primary and secondary ship for salvaging garbage on water surface |
| CN215043524U (en) * | 2021-04-14 | 2021-12-07 | 广州小鲇智能科技有限公司 | Unmanned ship with positioning function for cleaning water surface garbage |
-
2021
- 2021-12-27 CN CN202111610420.8A patent/CN114132446A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201865088U (en) * | 2010-09-10 | 2011-06-15 | 浙江工业大学 | Overwater rubbish collection and classification ship |
| CN203544334U (en) * | 2013-07-31 | 2014-04-16 | 中北大学 | Small solar water area remote control trash-removal boat |
| CN209243694U (en) * | 2018-11-29 | 2019-08-13 | 青岛黄海学院 | A kind of floating on water surface anti-pollution vessel |
| CN214267907U (en) * | 2020-12-17 | 2021-09-24 | 安徽中科合鼎科技发展有限公司 | Primary and secondary ship for salvaging garbage on water surface |
| CN215043524U (en) * | 2021-04-14 | 2021-12-07 | 广州小鲇智能科技有限公司 | Unmanned ship with positioning function for cleaning water surface garbage |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114889757A (en) * | 2022-05-20 | 2022-08-12 | 哈尔滨理工大学 | Chain net tipping bucket type garbage salvage ship |
| CN114889757B (en) * | 2022-05-20 | 2024-01-26 | 哈尔滨理工大学 | Chain net tipping bucket type garbage salvage ship |
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