CN110692589A - Fishpond oxygen charging machine - Google Patents
Fishpond oxygen charging machine Download PDFInfo
- Publication number
- CN110692589A CN110692589A CN201911111064.8A CN201911111064A CN110692589A CN 110692589 A CN110692589 A CN 110692589A CN 201911111064 A CN201911111064 A CN 201911111064A CN 110692589 A CN110692589 A CN 110692589A
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- processing unit
- unit module
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- module
- motor case
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims description 24
- 229910052760 oxygen Inorganic materials 0.000 title claims description 24
- 239000001301 oxygen Substances 0.000 title claims description 24
- 238000012545 processing Methods 0.000 claims abstract description 53
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 238000005187 foaming Methods 0.000 claims abstract description 9
- 238000001514 detection method Methods 0.000 claims abstract description 8
- 239000011248 coating agent Substances 0.000 claims abstract description 6
- 238000000576 coating method Methods 0.000 claims abstract description 6
- 238000005259 measurement Methods 0.000 claims abstract description 6
- 230000017525 heat dissipation Effects 0.000 claims abstract description 3
- 239000000523 sample Substances 0.000 claims description 11
- 241000251468 Actinopterygii Species 0.000 claims description 9
- 238000003466 welding Methods 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 6
- 238000005276 aerator Methods 0.000 claims 7
- 239000002390 adhesive tape Substances 0.000 claims 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims 1
- 238000009360 aquaculture Methods 0.000 abstract description 11
- 244000144974 aquaculture Species 0.000 abstract description 11
- 238000013473 artificial intelligence Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 238000005070 sampling Methods 0.000 abstract description 3
- 230000006872 improvement Effects 0.000 description 7
- 230000001706 oxygenating effect Effects 0.000 description 6
- 230000005587 bubbling Effects 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 210000000056 organ Anatomy 0.000 description 2
- 201000004569 Blindness Diseases 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 239000012945 sealing adhesive Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
- A01K63/042—Introducing gases into the water, e.g. aerators, air pumps
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Marine Sciences & Fisheries (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Farming Of Fish And Shellfish (AREA)
Abstract
The invention discloses a fishpond oxygenator, which comprises a water surface mechanical operation part and an automatic control part, wherein the water surface mechanical operation part comprises a motor, a motor case, a bracket, an adjustable floating body, an impeller and a foaming screen, the motor is an air-cooled heat dissipation type motor, a sealing structure is arranged between an output shaft end of the motor and the motor case, a waterproof coating is arranged on the outer surface of the motor case, and the automatic control part of the oxygenator consists of a data detection and acquisition module, a processing unit module and an alarm module. The fishpond oxygenator disclosed by the invention adopts the remote water environment information measurement and control module designed based on the FPGA, so that the sampling and transmission of information can be effectively realized, and the aquaculture water environment can be measured and controlled in real time in the later period based on the GSM wireless module and matched with a remote artificial intelligence decision platform, so that the fishpond oxygenator is low in cost, convenient for increasing a sensor interface in the later period, and has wide prospects in the application fields of aquaculture environment control and the like.
Description
Technical Field
The invention relates to aquaculture machinery, in particular to an oxygen charging machine for a fishpond.
Background
Although the oxygenating machine is widely applied to aquaculture, most farmers stop determining whether to start the oxygenating machine or not depending on the aquaculture, and the aquaculture method has blindness and hysteresis, cannot supply oxygen to the aquaculture in time and has great aquaculture defects.
Disclosure of Invention
The invention aims to solve the technical problem of providing the fishpond oxygen charging machine.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: an oxygen charging machine for fish pond is composed of a water surface mechanical operation unit consisting of motor, motor casing, three supports, three adjustable floating bodies, vane wheel and bubbling screen, an air-cooled radiating motor, a sealing structure between output axle of motor and motor casing, a pressure sensor and a miniature electronic air pump, and an automatic control unit module with electric connection between said three supports, the impeller is internally provided with a cavity, the impeller is provided with a plurality of blades, the blades are fixedly connected with the cavity through ultrasonic welding, the bubbling screen is provided with an edge, the edge is provided with a fixing hole, a fixing rod is arranged between the bubbling screen and the bracket, the automatic control part of the oxygenating machine consists of a data detection and acquisition module, a processing unit module and an alarm module, the data detection and acquisition module comprises a plurality of dissolved oxygen measuring probes and temperature sensors, the dissolved oxygen measuring probes are arranged in the fishpond and are electrically connected with the processing unit module through an amplifying circuit and an A/D conversion circuit, the temperature sensors are arranged in the fishpond and are electrically connected with the processing unit module through a feedback current amplifying circuit and the A/D conversion circuit, the processing unit module is arranged in a fishpond duty room, and the processing unit module is based on the long-range observing and controlling of FPGA, and is equipped with control interface and control button on the processing unit module, alarm module include bee calling organ, alarm lamp and remote alarm module, on bee calling organ located the processing unit module, through the circuit connection of welding with the processing unit module, and the alarm lamp adopts emitting diode, is connected with the processing unit module through the circuit, remote alarm module realize remote function based on GSM wireless module, be equipped with circuit connection between remote alarm module and GSM wireless module and the processing unit module, and through welding and processing unit module fixed connection.
Compared with the prior art, the invention has the advantages that: the fishpond oxygenator disclosed by the invention adopts the remote water environment information measurement and control module designed based on the FPGA, so that the sampling and transmission of information can be effectively realized, and the aquaculture water environment can be measured and controlled in real time in the later period based on the GSM wireless module and matched with a remote artificial intelligence decision platform, so that the fishpond oxygenator is low in cost, convenient for increasing a sensor interface in the later period, and has wide prospects in the application fields of aquaculture environment control and the like.
As an improvement, a sealing structure is arranged between the output shaft end of the motor and the motor case and comprises an extrusion ring, a rubber ring and a stopping part, the stopping part and the motor case are integrally formed parts made of aluminum, and the rubber ring is arranged between the extrusion ring and the stopping part.
As an improvement, the outer surface of the motor case is provided with a waterproof coating, the top side of the motor case is provided with an observation window, the observation window is fixedly installed through screws, and a sealing adhesive tape is arranged between the observation window and the motor case.
As an improvement, the other end of the bracket is provided with an adjustable floating body, the bracket is provided with a positioning pin and a buckle, and the adjustable floating body is fixedly connected with the bracket through the positioning pin and the buckle.
As an improvement, a pressure sensor and a miniature electronic air pump are arranged in the adjustable floating body, a feedback circuit is arranged between the adjustable floating body and the processing unit module, a circuit electrically connected with the adjustable floating body is arranged in the support of the hollow pipe body, the pressure reference value of the pressure sensor can be preset or manually adjusted according to different seasons, and a positive feedback system and a negative feedback system are formed among the pressure sensor, the processing unit module and the miniature electronic air pump.
As an improvement, the impeller is provided with a plurality of blades, and the air inlet at one end of each blade is a space spiral curve from the air inlet to the air outlet.
As an improvement, a fixed rod is arranged between the foaming screen and the bracket, one end of the fixed rod is provided with a screw to be connected with a fixed hole at the edge, and the other end of the fixed rod is connected with the bracket through a hinge.
As an improvement, the processing unit module is remotely measured and controlled based on the FPGA, a control interface and a control button are arranged on the processing unit module, and the control interface is provided with information capable of displaying the temperature and the oxygen content of the fishpond in real time, so that the processing unit module can automatically realize oxygenation according to a preset value, and can manually oxygenate according to the existing condition of the fishpond and the growth condition of fry.
Drawings
Fig. 1 is a schematic structural view of a fishpond oxygenator.
As shown in the figure: 1. the device comprises a motor, 2, a motor case, 3, a support, 4, an adjustable floating body, 5, an impeller, 6, a foaming screen, 7, a data detection and acquisition module, 7-1, a dissolved oxygen measuring probe, 7-2, a temperature sensor, 8, a processing unit module, 9, an alarm module, 9-1, a buzzer, 9-2, an alarm lamp, 9-3 and a remote alarm module.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The invention is implemented in detail, the fishpond oxygenator comprises a water surface mechanical operation part and an automatic control part, wherein the water surface mechanical operation part comprises a motor 1, a motor case 2, a bracket 3, an adjustable floating body 4, an impeller 5 and a foaming screen 6, the motor 1 is an air-cooled heat dissipation type motor, a sealing structure is arranged between the output shaft end of the motor 1 and the motor case 2, the motor 1 is arranged in the motor case 2 and is fixed by a clamping groove and a nut in the motor case 2, the outer surface of the motor case 2 is provided with a waterproof coating, the bracket 3 is provided with three strips, the bracket 3 is a hollow pipe body, one end of the bracket 3 is fixedly arranged with the motor case 2 through a thread structure and a sealing ring, the other end of the bracket 3 is provided with the adjustable floating body 4, a pressure sensor and a micro electronic air pump are arranged in the adjustable floating body 4, the automatic control part of the oxygenating machine consists of a data detection and acquisition module 7, a processing unit module 8 and an alarm module 9, the data detection and acquisition module 7 comprises a dissolved oxygen measuring probe 7-1 and a temperature sensor 7-2, the dissolved oxygen measuring probe 7-1 is provided with a plurality of probes, the dissolved oxygen measuring probe 7-1 is arranged in a fish pond, and the dissolved oxygen measuring probe 7-1 is electrically connected with the processing unit module 8 through an amplifying circuit and an A/D conversion circuit, the temperature sensors 7-2 are arranged in the fishpond, the temperature sensors 7-2 are electrically connected with the processing unit module 8 through a feedback current amplifying circuit and an A/D conversion circuit, the processing unit module 8 is arranged in a fishpond duty room, the processing unit module 8 is based on FPGA remote measurement and control, a control interface and a control button are arranged on the processing unit module 8, the alarm module 9 comprises a buzzer 9-1, an alarm lamp 9-2 and a remote alarm module 9-3, the buzzer 9-1 is arranged on the processing unit module 8 and is connected with the circuit of the processing unit module 8 through welding, the alarm lamp 9-2 adopts a light emitting diode and is connected with the processing unit module 8 through a circuit, and the remote alarm module 9-3 realizes a remote function based on a GSM wireless module, the remote alarm module 9-3 and the GSM wireless module are connected with the processing unit module 8 through circuits, and are fixedly connected with the processing unit module 8 through welding.
A sealing structure is arranged between the output shaft end of the motor 1 and the motor case 2 and comprises an extrusion ring, a rubber ring and a stopping portion, the stopping portion and the motor case 2 are integrally formed parts made of aluminum, and the rubber ring is arranged between the extrusion ring and the stopping portion.
The outer surface of the motor case 2 is provided with a waterproof coating, the top side of the motor case 2 is provided with an observation window, the observation window is fixedly installed through screws, and a sealing rubber strip is arranged between the observation window and the motor case 2.
The other end of the bracket 3 is provided with an adjustable floating body 4, the bracket 3 is provided with a positioning pin and a buckle, and the adjustable floating body 4 is fixedly connected with the bracket 3 through the positioning pin and the buckle.
The adjustable floating body 4 is internally provided with a pressure sensor and a miniature electronic air pump, a feedback circuit is arranged between the adjustable floating body and the processing unit module 8, a circuit electrically connected with the adjustable floating body is arranged in the support 3 of the hollow pipe body, the pressure reference value of the pressure sensor can be preset or manually adjusted according to different seasons, and a positive and negative feedback system is formed among the pressure sensor, the processing unit module 8 and the miniature electronic air pump.
The impeller 5 is provided with a plurality of blades, and the air inlet at one end of each blade is a space spiral curve from the air inlet to the air outlet.
A fixing rod is arranged between the foaming screen 6 and the support 3, one end of the fixing rod is provided with a screw to be connected with a fixing hole at the edge, and the other end of the fixing rod is connected with the support 3 through a hinge.
The processing unit module 8 is based on FPGA remote measurement and control, a control interface and a control button are arranged on the processing unit module 8, temperature and oxygen content information of the fishpond can be displayed in real time on the control interface, oxygen charging can be automatically realized by the processing unit module 8 according to a preset value, and manual oxygen charging can be performed manually according to the existing condition of the fishpond and the growth condition of the fry.
The working principle of the invention is as follows: the automatic control part of the oxygenator of the invention adopts a GSM wireless module based on FPGA design to realize remote functions, can effectively realize information sampling and transmission, can carry out real-time measurement and control on aquaculture water environment by matching with a remote artificial intelligence decision platform, is provided with a control interface and a control button on a processing unit module, and is provided with information capable of displaying the temperature and oxygen content of a fishpond in real time, so that the oxygenating can be automatically realized by the processing unit module according to a preset value, and the oxygenating can be manually carried out according to the existing condition of the fishpond and the growth condition of fish fries.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature, and in the description of the invention, "plurality" means two or more unless explicitly defined otherwise.
In the present invention, unless otherwise specifically stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.
In the description herein, reference to the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.
Claims (8)
1. A fishpond oxygenator comprises a water surface mechanical operation part and an automatic control part, wherein the water surface mechanical operation part comprises a motor (1), a motor case (2), a support (3), an adjustable floating body (4), an impeller (5) and a foaming screen (6), the motor (1) is an air-cooled heat dissipation type motor, a sealing structure is arranged between an output shaft end of the motor (1) and the motor case (2), the motor (1) is arranged in the motor case (2) and is fixed through a clamping groove and a nut in the motor case (2), a waterproof coating is arranged on the outer surface of the motor case (2), three supports (3) are arranged, the supports (3) are hollow pipes, one end of each support (3) is fixedly installed with the motor case (2) through a thread structure and a sealing ring, the adjustable floating body (4) is arranged at the other end of each support (3), the adjustable floating body (4) is internally provided with a pressure sensor and a miniature electronic air pump, the adjustable floating body is electrically connected with a processing unit module (8) of an automatic control part, the impeller (5) is fixedly connected with an output shaft end of the motor (1) through a key groove structure, a cavity is arranged in the impeller (5), a plurality of blades are arranged on the impeller (5), the blades are fixedly connected with the cavity through ultrasonic welding, the foaming screen (6) is provided with an edge, fixing holes are arranged on the edge, a fixing rod is arranged between the foaming screen (6) and the bracket (3), the automatic control part of the oxygenator consists of a data detection and acquisition module (7), the processing unit module (8) and an alarm module (9), the data detection and acquisition module (7) comprises a dissolved oxygen measuring probe (7-1) and a temperature sensor (7-2), the system is characterized in that the dissolved oxygen measuring probes (7-1) are arranged in the fish pond, the dissolved oxygen measuring probes (7-1) are electrically connected with the processing unit module (8) through the amplifying circuit and the A/D conversion circuit, the temperature sensors (7-2) are arranged in the fish pond, the temperature sensors (7-2) are electrically connected with the processing unit module (8) through the feedback current amplifying circuit and the A/D conversion circuit, the processing unit module (8) is arranged in the fish pond duty room, the processing unit module (8) is based on FPGA remote measurement and control, a control interface and a control button are arranged on the processing unit module (8), the alarm module (9) comprises a buzzer (9-1), an alarm lamp (9-2) and a remote alarm module (9-3), buzzer (9-1) is arranged on processing unit module (8) and is connected with the circuit of processing unit module (8) through welding, alarm lamp (9-2) adopts light emitting diode and is connected with processing unit module (8) through circuit, remote alarm module (9-3) realize remote function based on GSM wireless module, and circuit connection is arranged between remote alarm module (9-3) and GSM wireless module and processing unit module (8), and is fixedly connected with processing unit module (8) through welding.
2. The fishpond aerator of claim 1, wherein: a sealing structure is arranged between the output shaft end of the motor (1) and the motor case (2), the sealing structure comprises an extrusion ring, a rubber ring and a stopping portion, the stopping portion and the motor case (2) are integrally formed aluminum parts, and the rubber ring is arranged between the extrusion ring and the stopping portion.
3. The fishpond aerator of claim 1, wherein: the motor case (2) surface be equipped with waterproof coating, and the top side of motor case (2) is equipped with the observation window, the observation window passes through screw fixed mounting, is equipped with sealed adhesive tape between observation window and motor case (2).
4. The fishpond aerator of claim 1, wherein: the adjustable floating body is characterized in that an adjustable floating body (4) is arranged at the other end of the support (3), a positioning pin and a buckle are arranged on the support (3), and the adjustable floating body (4) is fixedly connected with the support (3) through the positioning pin and the buckle.
5. The fishpond aerator of claim 1, wherein: the adjustable floating body (4) is internally provided with a pressure sensor and a miniature electronic air pump, a feedback circuit is arranged between the adjustable floating body and the processing unit module (8), a circuit which is electrically connected is arranged in the support (3) of the hollow pipe body, the pressure reference value of the pressure sensor can be preset or manually adjusted according to different seasons, and a positive and negative feedback system is formed among the pressure sensor, the processing unit module (8) and the miniature electronic air pump.
6. The fishpond aerator of claim 1, wherein: the impeller (5) is provided with a plurality of blades, one end of each blade is provided with an air inlet, and the space spiral curve from the air inlet to the air outlet is formed.
7. The fishpond aerator of claim 1, wherein: a fixed rod is arranged between the foaming screen (6) and the bracket (3), one end of the fixed rod is provided with a screw to be connected with the fixed hole at the edge, and the other end of the fixed rod is connected with the bracket (3) through a hinge.
8. The fishpond aerator of claim 1, wherein: the processing unit module (8) is remotely measured and controlled based on the FPGA, a control interface and a control button are arranged on the processing unit module (8), temperature and oxygen content information of the fish pond can be displayed in real time on the control interface, oxygen charging can be automatically realized by the processing unit module (8) according to a preset value, and manual oxygen charging can be carried out manually according to the existing conditions of the fish pond and the growth condition of fish fries.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911111064.8A CN110692589A (en) | 2019-11-14 | 2019-11-14 | Fishpond oxygen charging machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911111064.8A CN110692589A (en) | 2019-11-14 | 2019-11-14 | Fishpond oxygen charging machine |
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| Publication Number | Publication Date |
|---|---|
| CN110692589A true CN110692589A (en) | 2020-01-17 |
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ID=69204295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911111064.8A Pending CN110692589A (en) | 2019-11-14 | 2019-11-14 | Fishpond oxygen charging machine |
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| Country | Link |
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| CN (1) | CN110692589A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU993896A1 (en) * | 1981-02-19 | 1983-02-07 | Управление Местной Промышленности Исполнительного Комитета Челябинского Областного Совета Народных Депутатов | Apparatus for aeration of water |
| DE3235961A1 (en) * | 1982-09-29 | 1984-03-29 | Norbert 8122 Penzberg Tunze | EVAPORATION PROBE FOR AQUARIUM |
| CN104798721A (en) * | 2015-04-20 | 2015-07-29 | 辽宁工程技术大学 | Automatic oxygenator for monitoring and pre-warning water quality for fishing |
| CN205872365U (en) * | 2016-07-04 | 2017-01-11 | 中交广州航道局有限公司 | Fill light -duty floating mat in abrasive band |
| CN108506220A (en) * | 2018-04-28 | 2018-09-07 | 金湖县华能机电有限公司 | Non-gear box intelligent frequency-conversion aerator system |
| CN208021675U (en) * | 2018-02-07 | 2018-10-30 | 新昌县勤振机械制造有限公司 | A kind of hydrometeorology buoyage |
-
2019
- 2019-11-14 CN CN201911111064.8A patent/CN110692589A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU993896A1 (en) * | 1981-02-19 | 1983-02-07 | Управление Местной Промышленности Исполнительного Комитета Челябинского Областного Совета Народных Депутатов | Apparatus for aeration of water |
| DE3235961A1 (en) * | 1982-09-29 | 1984-03-29 | Norbert 8122 Penzberg Tunze | EVAPORATION PROBE FOR AQUARIUM |
| CN104798721A (en) * | 2015-04-20 | 2015-07-29 | 辽宁工程技术大学 | Automatic oxygenator for monitoring and pre-warning water quality for fishing |
| CN205872365U (en) * | 2016-07-04 | 2017-01-11 | 中交广州航道局有限公司 | Fill light -duty floating mat in abrasive band |
| CN208021675U (en) * | 2018-02-07 | 2018-10-30 | 新昌县勤振机械制造有限公司 | A kind of hydrometeorology buoyage |
| CN108506220A (en) * | 2018-04-28 | 2018-09-07 | 金湖县华能机电有限公司 | Non-gear box intelligent frequency-conversion aerator system |
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Application publication date: 20200117 |