CN215898670U - Small river salmon juvenile fish catching device - Google Patents
Small river salmon juvenile fish catching device Download PDFInfo
- Publication number
- CN215898670U CN215898670U CN202122538446.8U CN202122538446U CN215898670U CN 215898670 U CN215898670 U CN 215898670U CN 202122538446 U CN202122538446 U CN 202122538446U CN 215898670 U CN215898670 U CN 215898670U
- Authority
- CN
- China
- Prior art keywords
- net
- river
- fish
- shielding plate
- wave
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 241000251468 Actinopterygii Species 0.000 title claims abstract description 34
- 235000019688 fish Nutrition 0.000 title claims abstract description 34
- 241000972773 Aulopiformes Species 0.000 title claims abstract description 27
- 235000019515 salmon Nutrition 0.000 title claims abstract description 27
- 230000000366 juvenile effect Effects 0.000 title claims abstract description 9
- 239000002023 wood Substances 0.000 claims description 2
- 241000196324 Embryophyta Species 0.000 abstract description 7
- 238000003306 harvesting Methods 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000012544 monitoring process Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000009395 breeding Methods 0.000 description 2
- 230000001488 breeding effect Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 210000004379 membrane Anatomy 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000001617 migratory effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 210000001325 yolk sac Anatomy 0.000 description 1
Images
Abstract
The utility model discloses a small river salmon juvenile fish harvesting device, relates to the field of fishery, and aims to solve the problems that the small river salmon is difficult to harvest and is easy to be interfered by branches, weeds and the like in rivers. The utility model comprises a net cage, a drainage net and a wave-shaped baffle plate; the fish inlet of the net cage is communicated with the fish outlet of the drainage net, two sides of the fish inlet of the drainage net are respectively connected with a traction rope, and the other end of the traction rope is fixed on the river bank; the net cage is arranged in a river, and the inner diameter of the fish outlet of the drainage net is smaller than that of the fish inlet; the wave-shaped baffle plate is arranged above the net cage and the drainage net and is connected with the riverbed through a fixed rod; the outer edge of one side of the wavy shielding plate extends downwards to form an inclined downward guide plate, and the outer edge of the wavy shielding plate on the opposite side of the wavy shielding plate is bent to form an arc spoiler with an upward opening. The utility model is applied to the field of fishing of salmon.
Description
Technical Field
The utility model relates to the field of fishery, in particular to a small river salmon juvenile fish catching device.
Background
The salmon is a migratory cold water type fish, and breeding groups of the salmon generally perform nesting and spawning breeding in small rivers (such as western river of Towanghe tributary, Hanhui sleeve of Huma tributary, and the like) with clear water quality, small water flow and pebble or gravel substrate. And (4) hatching young fishes out of membranes and absorbing yolk sacs in 4-6 months every year, drilling out from the nest, and descending and migrating while feeding the growing side to flow downstream. At present, the monitoring and evaluation work research of early resources of young salmon is less developed, mainly, the young salmon is small in fish body and short in living time in rivers, so that the harvesting and catching difficulty is high, branch weeds and the like often float in small rivers, and most of the small rivers are shallow water, so that the harvesting and catching device is easily damaged by the impurities. The related research work has progressed slowly.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems that the small river salmon is difficult to capture and is easy to capture by interference of branches, weeds and the like in rivers at present, and provides a small river salmon juvenile fish capture device.
The utility model relates to a small river salmon juvenile fish catching device, which comprises a net cage, a drainage net and a wave-shaped baffle plate, wherein the net cage is provided with a plurality of drainage holes;
the fish inlet of the net cage is communicated with the fish outlet of the drainage net, two sides of the fish inlet of the drainage net are respectively connected with a traction rope, and the other end of the traction rope is fixed on the river bank; the net cage is arranged in a river, and the inner diameter of the fish outlet of the drainage net is smaller than that of the fish inlet;
the wave-shaped baffle plate is arranged above the net cage and the drainage net and is connected with the riverbed through a fixed rod; the outer edge of one side of the wavy shielding plate extends downwards to form an inclined downward guide plate, and the outer edge of the wavy shielding plate on the opposite side of the wavy shielding plate is bent to form an arc spoiler with an upward opening.
The utility model has the following beneficial effects:
according to the utility model, the salmon is captured by adopting the net cage, the salmon is guided to the net cage through the drainage net, and the thermometer is arranged at the fish inlet of the drainage net to count the temperature of the water body near the capturing device. In order to prevent the damage of the mining and catching device caused by the tree-branch weeds and the like in the small river, the utility model is provided with the wave-shaped baffle plate, the wave-shaped baffle plate is positioned above the mining and catching device and can be the surface of the river or be in the river and close to the surface of the river, the outer edge of the front end of the wave-shaped baffle plate (the front end of the wave-shaped baffle plate faces the upstream of the river, and the rear end of the wave-shaped baffle plate faces the downstream of the river) extends downwards to form a guide plate which inclines downwards, and the guide plate downwards forms a certain inclination angle according to the actual situation and can guide the tree-branch weeds and the like on the water surface to the upper part of the wave-shaped baffle plate instead of entering the lower part of the wave-shaped baffle plate. The wave structure setting of wave shielding plate can form certain torrent with rivers wave shielding plate upper surface for branch weeds etc. flow along the direction of river, and the outer edge bending type of wave shielding plate rear end forms the ascending circular arc spoiler of opening, and such setting can form the torrent, can play and prevent that rivers from flowing down the back from wave shielding plate, and decurrent impact force makes branch weeds etc. taken to the aquatic, probably persists between wave shielding plate and adopting the catcher.
The utility model has simple structure and convenient operation, and can effectively monitor the resource amount and the occurrence time of the juvenile salmon in the small river.
Drawings
FIG. 1 is a diagram showing the state of the trap of the present invention;
FIG. 2 is a schematic view of the flow wave-shaped shielding plate of the present invention.
Detailed Description
The first embodiment is as follows: the embodiment is described with reference to fig. 1 to 2, and the small river salmon fry collecting and catching device of the embodiment comprises a net cage 1, a drainage net 2 and a wave-shaped baffle plate 3;
the fish inlet of the net cage 1 is communicated with the fish outlet of the drainage net 2, two sides of the fish inlet of the drainage net 2 are respectively connected with a traction rope 4, and the other end of the traction rope 4 is fixed on the river bank through a fixer such as an awl; the net cage 1 is arranged in a river, and the inner diameter of the fish outlet of the drainage net 2 is smaller than that of the fish inlet;
the wave-shaped baffle plate 3 is arranged above the net cage 1 and the drainage net 2, and the wave-shaped baffle plate 3 is connected with a river bed through a fixed rod 5; the outer edge of one side of the wavy shielding plate 3 extends downwards to form an inclined downward guide plate 31, and the outer edge of the wavy shielding plate 3 opposite to the inclined downward guide plate is bent to form an arc spoiler 32 with an upward opening.
The small river salmon fry catching device of the present embodiment is used as follows:
1) in 4 months each year, after the ice surface of a small river melts, the upper, middle and lower reaches of the river are selected as 3 monitoring sections.
2) As the river is small, the river depth of the selected monitoring section is about 0.3-1 m generally, and the river width is 3-5 m. Two iron rods are fixedly erected on two sides of the selected cross section river bank, and 2 thick traction ropes 4 are bound on the iron rods close to the water surface.
3) The drainage net 2 is tied on the left, middle and right banks, and after water flows pass through the net mouth, the fry can be left in the net cage 1 behind the drainage net 2. And 1 temperature recorder is bound under the 2 net openings of each drainage net.
4) Fishing out the fish catch in the net cage 1 every morning, counting and identifying whether the salmon exists, recording the number of the salmon, collecting the position and the section of the net cage, and finally cleaning the sundries on the drainage net 2 by using a brush to keep the cleanness and the function of the netting gear.
5) Stopping monitoring after the young salmon is not harvested for 5 consecutive days after 6 months, taking out the netting gear and the temperature recorder, and reading the temperature value in the monitoring period in a laboratory.
6) And analyzing the number, peak period and temperature relationship of the juvenile salmon in each section of the river by using mathematical statistic analysis software.
The second embodiment is as follows: the present embodiment will be described with reference to fig. 1 to 2, and the present embodiment is different from the specific embodiment in that: a thermometer is arranged at the fish inlet of the drainage net 2.
The rest is the same as the first embodiment.
The third concrete implementation mode: the present embodiment will be described with reference to fig. 1 to 2, and the present embodiment is different from the specific embodiment in that: fixed rods 5 are fixed below four corners of the wave-shaped baffle plate 3, and the bottoms of the fixed rods 5 are inserted into a riverbed.
The rest is the same as the first embodiment.
The fourth concrete implementation mode: the present embodiment will be described with reference to fig. 1 to 2, and the present embodiment is different from the specific embodiment in that: one end of each of the fixing ropes 6 is connected with the fixing rod 5, and the other end of each of the fixing ropes is connected with the counterweight.
The rest is the same as the first embodiment.
The fifth concrete implementation mode: the present embodiment will be described with reference to fig. 1 to 2, and the present embodiment is different from the specific embodiment in that: the wavy shielding plate 3 is made of a wood plate or a PVC plate.
The rest is the same as the first embodiment.
Claims (5)
1. A small river salmon juvenile fish catching device is characterized by comprising a net cage (1), a drainage net (2) and a wave-shaped baffle plate (3);
the fish inlet of the net cage (1) is communicated with the fish outlet of the drainage net (2), two sides of the fish inlet of the drainage net (2) are respectively connected with a traction rope (4), and the other end of the traction rope (4) is fixed on the river bank; the net cage (1) is arranged in a river, and the inner diameter of a fish outlet of the drainage net (2) is smaller than that of a fish inlet;
the wave-shaped shielding plate (3) is arranged above the net box (1) and the drainage net (2), and the wave-shaped shielding plate (3) is connected with a river bed through a fixing rod (5); the outer edge of one side of the wavy shielding plate (3) extends downwards to form an inclined downward guide plate (31), and the outer edge of the wavy shielding plate (3) on the opposite side is bent to form an arc spoiler (32) with an upward opening.
2. The small river salmon fry catching device as claimed in claim 1, wherein a thermometer is provided at the fish inlet of the drainage net (2).
3. The small river salmon fry catching device as claimed in claim 1, wherein the fixing rods (5) are fixed under the four corners of the wave-shaped shielding plate (3), and the bottoms of the fixing rods (5) are inserted into the river bed.
4. The small river salmon fry catching device as claimed in claim 1 or 2, wherein one end of each of the plurality of fixing ropes (6) is connected to the fixing rod (5) and the other end is connected to the weight.
5. The small river salmon fry catching device as claimed in claim 1, wherein the corrugated shielding plate (3) is made of wood or PVC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122538446.8U CN215898670U (en) | 2021-10-21 | 2021-10-21 | Small river salmon juvenile fish catching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122538446.8U CN215898670U (en) | 2021-10-21 | 2021-10-21 | Small river salmon juvenile fish catching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215898670U true CN215898670U (en) | 2022-02-25 |
Family
ID=80312784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122538446.8U Expired - Fee Related CN215898670U (en) | 2021-10-21 | 2021-10-21 | Small river salmon juvenile fish catching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215898670U (en) |
-
2021
- 2021-10-21 CN CN202122538446.8U patent/CN215898670U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203040458U (en) | Trapping type automatic classifying fishing station net | |
| KR101728120B1 (en) | Jellyfish capture device | |
| Bhaumik et al. | The fishery of Indian Shad (Tenualosa ilisha) in the Bhagirathi-Hooghly river system | |
| CN109430182B (en) | Fish collecting weir system with fish fluidity research function | |
| KR200436112Y1 (en) | fishing net for inflow prevention marine life | |
| CN215898670U (en) | Small river salmon juvenile fish catching device | |
| CN109247310A (en) | A kind of method and facility of the fresh and alive fishes fishing of fisheries resources conservation type | |
| CN104938377A (en) | Manual spawning ground constructing method for recovering Songhua river fish resources and evaluation method of effect thereof | |
| CN101564016B (en) | Method for comprehensively sampling small fishes in shallow water | |
| CN110241793A (en) | A kind of river straddling fish stocks method for enticing collection | |
| CN113068663B (en) | Floating ground cage for trapping shallow fishes | |
| Swales | The use of small wire‐mesh traps in sampling juvenile salmonids | |
| CN201726759U (en) | Device for catching wild miscellaneous fish fry and domesticated fish fry | |
| Cuchet | Fish protection and downstream migration at hydropower intakes | |
| CN219741615U (en) | Automatic box-feeding cage net for plateau deep water lake and reservoir | |
| CN2288581Y (en) | All-round fish trapping net cage | |
| CN216438328U (en) | Device for collecting fish larvae on different water layers in shallow water area | |
| JPS5837820B2 (en) | Fixed net | |
| CN2282769Y (en) | Flowing water area fish trapping device | |
| CN217850880U (en) | Crayfish breeding rice field | |
| CN109329231B (en) | Net for catching starfish | |
| CN215270143U (en) | Multi-purpose shrimp catching cage capable of being screened | |
| CN214015596U (en) | Net suitable for catching live juvenile fish | |
| Singh | Fishery Management Practices and Indigenous Fishing Methods in Kamrup District of Assam | |
| Cuchet | Lehrstuhl und Versuchsanstalt für Wasserbau und Wasserwirtschaft |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220225 |