CN103564027A - Fish killing device capable of catching dependent on weight - Google Patents
Fish killing device capable of catching dependent on weight Download PDFInfo
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- CN103564027A CN103564027A CN201310544175.4A CN201310544175A CN103564027A CN 103564027 A CN103564027 A CN 103564027A CN 201310544175 A CN201310544175 A CN 201310544175A CN 103564027 A CN103564027 A CN 103564027A
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Abstract
The invention relates to a fish killing device. A fish killing device capable of catching fishes from water according to the size and implementing a splitting operation comprises a fish killer, a fish pocket and a feeding pipe, wherein the fish pocket comprises a first fish room surrounded by a first net wall and a second net wall and provided with a first fish taking opening, and a second fish room surrounded by a first net wall, a second net wall and a third net wall and provided with a second fish taking opening; the first fish taking opening is provided with a first gate; the second fish taking opening is provided with a second gate; the second net wall is arranged between the first fish room and the second fish room; the net hole opening areas on the first net wall, the second net wall and the third net wall are increased gradually; the upper end of the feeding pipe is butted to the fish killer, and the lower end is butted to the first fish taking opening and the second fish taking opening; the feeding pipe is provided with a third gate, a conveying belt and a lifting mechanism. The fish filling device solves the problem that fishes cannot be directly caught from the water according to the size and split.
Description
Technical field
The present invention relates to kill fish device, relate in particular to a kind of government official fish device of recapturing and dragging for of selecting.
Background technology
Present government official fish device on the market has a lot.As in Chinese Patent Application No. being 2010105072775, within open day, be Mays 9 in 2012 day, be called in the patent document of " Full-automatic fish shearing machine " and disclose a kind of government official fish device.
Existing government official fish device is generally inserted in following deficiency: can not be directly by fish from fishing for according to size water and cut operation open.
Summary of the invention
The invention provides a kind of can be directly by fish from fishing for according to size water and cut the government official fish device that selecting of operation recaptured and dragged for open, solved existing cut open fish device can not be directly by fish from fishing for according to size water and cut the problem of operation open.
Above technical problem solves by following technical proposal: a kind of government official fish device of recapturing and dragging for of selecting, comprise the fish machine that cuts open, fish pocket and feed pipe, the described fish machine that cuts open is provided with charging aperture, described fish stomacher is drawn together the first net wall, the second net wall and the 3rd net wall, described the first net wall and the second net wall surround the first fish chamber, described the first fish chamber is provided with first and gets lymphogranuloma inguinale, described first gets lymphogranuloma inguinale is provided with the first gate, the first net wall, the second net wall and the 3rd net wall surround the second fish chamber, described the second fish chamber is provided with second and gets lymphogranuloma inguinale, described second gets lymphogranuloma inguinale is provided with the second gate, described the second net wall is isolated between described the first fish chamber and the second fish chamber, the aperture area of the mesh on described the first net wall, the aperture area of the mesh on the aperture area of the mesh on the second net wall and the 3rd net wall increases successively, described feed pipe comprises buffer memory section and raising section, described buffer memory section is provided with the 3rd gate and conveyer belt, described buffer memory section is docked between described charging aperture and the upper end of raising section, the lower end of described raising section and described first is got lymphogranuloma inguinale and second and is got lymphogranuloma inguinale and be docking together, in described raising section, be provided with hoisting mechanism.During use, fish pocket is placed in water, the fish (hereinafter referred to as small fish) passing through in can the mesh from the first net wall can freely pass in and out fish pocket, can can not be trapped in the first fish chamber by the fish (hereinafter referred to as middle fish) of the mesh on the first net wall by the mesh on the second net wall, can can not be trapped in the second fish chamber by the fish (hereinafter referred to as large fish) of the mesh on net wall by the mesh on the 3rd net wall, fish is separated automatically according to size.In the time will killing middle fish, the aperture of opening the first gate and adjusting the 3rd gate makes fish be merely able to single charging aperture that only enters, fish in the first fish chamber is got lymphogranuloma inguinale through first and enters raising section, under the effect of hoisting mechanism, fish arrives buffer memory section, under the effect of conveyer belt, fish enters through charging aperture the fish machine that cuts open, and cuts open fishing machine fish is cut open.In the time will killing large fish, the aperture of opening the second gate and adjusting the 3rd gate makes fish be merely able to single charging aperture that only enters, fish in the second fish chamber is got lymphogranuloma inguinale through second and enters raising section, under the effect of hoisting mechanism, fish arrives buffer memory section, under the effect of conveyer belt, fish enters through charging aperture the fish machine that cuts open, and cuts open fishing machine fish is cut open.If catch and kill large fish after first catching and killing middle fish, the sound that equipment produces when catching and killing middle fish is fled from fish generation, and the result of fleeing from substantially only has in middle fish, the second fish chamber and substantially only has large fish in the first fish chamber for making.If catch and kill middle fish after first catching and killing large fish, for the quantity of fish in reducing in the second fish chamber, preferably first the fish in fish chamber is driven, make to only have in each fish chamber the fish of corresponding size, thereby can reduce the ratio of the fish of not catching and killing according to magnitude classification.If need to sort while catching and killing according to three above order of magnitude, three above and and fish chambers of carrier pipe connection are set accordingly.
As preferably, mesh on described the second net wall and the mesh on the 3rd net wall are all provided with the port lid of unidirectional unlatching, the described port lid that is arranged in the mesh on described the second net wall is opened towards described the first fish chamber, and the described port lid that is arranged in the mesh on described the 3rd net wall is opened towards described the second fish chamber.Can effectively prevent that middle fish from leaving the first fish chamber, large fish and leaving the second fish chamber (also the fish of corresponding size is merely able to enter corresponding fish chamber and can not leaves this fish chamber), can improve fishing efficiency of the present invention.
As preferably, described port lid is provided with some through holes that connect port lid along port lid opening direction.Can reduce the resistance while opening port lid, make fish can enter more easily fish chamber.
As preferably, described port lid and corresponding mesh are hinged by hinge, and described through hole be the arcuate socket of the circumferential extension of the circle of edge centered by the axis of described hinge.While rotating port lid, water can pass through through hole, more laborsaving convenience while making Switch Hole Cover more glibly.Port lid port lid is laborsaving can produce following beneficial effect: fish can be more easily laborsaving the enters fish chamber, and port lid can be shut more reliably.Laborsaving when fish enters fish chamber, can improve fishing efficiency of the present invention.
As preferably, described through hole, is less than from the aperture area of the through hole away from described hinge from the aperture area of the through hole of described hinge near distance.While rotating port lid, the local arm of force from the distance of hinge away from is more larger, can further reduce like this water resistance in rotation process and stop the moment that port lid rotates.
As preferably, described fish pocket is provided with sound-producing device, and described sound-producing device for producing sound before opening the second valve or the first valve.Can reduce the ratio of the middle small fish by mistake being caught while catching and killing large fish.Catch and kill the ratio of the small fish that middle fish mistiming catches.Accuracy when automatic sorting is catched and killed is good.
As preferably, described port lid is also provided with pass lid spring.Can make port lid automatically cover reliably in through hole, prevent that port lid from not closing in time and causing fish to leave fish chamber, catching rate is high.Can certainly only rely on gravity that port lid is covered, but can cause like this poor reliability and fishing inefficiency.
As preferably, between described the first net wall and the 3rd net wall, form and collect mouth.Collection mouth can play guiding fish and enter the effect in the second fish chamber, thereby catching rate is improved.
As preferably, the indoor electric light that is provided with of described the first fish, the indoor dividing plate that is provided with of described the second fish, described dividing plate is between described the second net wall and the 3rd net wall, described dividing plate is divided into two locellus by described the second fish chamber, and described dividing plate is provided with the fish pass that is communicated with two locellus, in described fish pass, is provided with impeller, described impeller and generator link together, and described generator and described electric light link together.When fish process fish pass, drives impeller is rotated, the generating of impeller-driven generator, and the electric drive electric light that generator sends is luminous, and electric light can lure fish to enter fish chamber, has improved fishing efficiency of the present invention.Utilize fish movement power generation, solved the problem of field use inconvenience.
As preferably, described impeller comprises impeller blade and impeller shaft, and described impeller shaft and described generator link together, and described impeller blade is provided with loophole, and described dividing plate is resistance photo structure.Can effectively lure fish to pass fish pass and drives impeller rotating shaft rotation, to improve generating efficiency, water resistance during wheel rotor rotating shaft is simultaneously little, and the kinetic energy in the time of can improving fish movement changes the efficiency of electric energy into.
As preferably, described dividing plate is provided with horn mouth towards a side of described the 3rd net wall, and one end and fish pass that described iiared port area is little are docking together.When fish promotes port lid and enters the second fish chamber, port lid flows towards fish pass when opening the current that flow to dividing plate that produce and running into dividing plate under bell-mouthed conflux effect, thereby play, promote the effect that fish enters fish pass drives impeller generating together with auxiliary fish, can improve generating efficiency of the present invention.
As preferably, described the first net wall comprises diapire and roof, and described the second net wall and the 3rd net wall are all tubular structure, and described the 3rd net wall is set on described the second net wall, and described diapire and roof are connected to the axial two ends of described the second net wall and the 3rd net wall.Fish from from surrounding trip of the present invention to the first fish chamber can both successfully be entered fish chamber, improved fishing efficiency of the present invention.
The present invention has following advantage: two fish chambers of fish pocket design, and each fish chamber can only make the fish of corresponding size be detained wherein, and by fish chamber with cut open fish machine and be docking together, thereby make can automatically from water, according to size, separately catch and kill fish by the present invention.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention one.
Fig. 2 is the local enlarged diagram at the A place of Fig. 1.
Fig. 3 does not draw the parts between mesh, bulb and the generator on the first net wall in the schematic top plan view, this figure of the fish pocket in the embodiment of the present invention two.
In figure: the first net wall 1, mesh 11 on the first net wall, collect mouth 12, diapire 13, roof 14, the second net wall 2, mesh 21 on the second net wall, the 3rd net wall 3, mesh 31 on the 3rd net wall, the first fish chamber 4, electric light 41, electric light drive circuit 42, light-operated switch 421, first gets lymphogranuloma inguinale 43, the first gate 44, port lid 5, through hole 51, hinge 52, close lid spring 53, the second fish chamber 6, dividing plate 61, locellus 62, fish pass 63, horn mouth 64, one end 641 that iiared port area is little, second gets lymphogranuloma inguinale 65, the second gate 66, sound-producing device 67, impeller 7, impeller shaft 71, impeller blade 72, loophole 721, gear 73, generator 8, charger 81, battery 82, gear ring 83, connecting rod 84, the driving shaft 85 of generator, cut open fish machine 9, charging aperture 91, feed pipe 92, buffer memory section 921, raising section 922, the 3rd gate 93, conveyer belt 94, hoisting mechanism 95, elevator belt 951, supporting plate 952.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is further illustrated.
Embodiment mono-, and referring to Fig. 1, a kind of government official fish device of recapturing and dragging for of selecting, comprises fish pocket and cut open fish machine 9.
Fish stomacher is drawn together the first net wall 1, the second net wall 2 and the 3rd net wall 3.
The first net wall 1 is the unlimited cylindrical structure in one end.
The second net wall 2 is arranged in the first net wall 1.The first net wall 1 and the second net wall 2 surround the first fish chamber 4.The first fish chamber 4 is provided with first and gets lymphogranuloma inguinale 43.First gets lymphogranuloma inguinale 43 is provided with the first gate 44.In the first fish chamber 4, be provided with electric light 41.The aperture area of the mesh 11 on the first net wall is less than the aperture area of the mesh 21 on the second net wall.Mesh 21 on the second net wall is provided with port lid 5.Port lid 5 on mesh 21 on the second net wall can only be towards the first interior unlatching in fish chamber 4.
The 3rd net wall 3 is positioned at the first net wall 1.Between the 3rd net wall 3 and the first net wall 1, form and collect mouth 12.The first net wall 1, the second net wall 2 and the 3rd net wall 3 threes surround the second fish chamber 6.The second fish chamber 6 is provided with second and gets lymphogranuloma inguinale 65.Second gets lymphogranuloma inguinale 65 is provided with the second gate 66.In the second fish chamber 6, be provided with dividing plate 61 and sound-producing device 67.Dividing plate 61 for resistance photo structure, be light can not through dividing plate 61 see through and dividing plate 61 on do not establish the meaning of loophole yet.Dividing plate 61 is between the second net wall 2 and the 3rd net wall 3.Dividing plate 61 is divided into two locellus 62 by the second fish chamber 6.Dividing plate 61 is provided with the fish pass 63 that is communicated with two locellus 62.Dividing plate 61 is provided with horn mouth 64 towards a side of the 3rd net wall 3.One end 641 and fish pass 63 that iiared port area is little are docking together.In fish pass 63, be provided with impeller 7.Impeller 7 comprises impeller shaft 71 and impeller blade 72.Impeller shaft 71 is vertical with the bearing of trend of fish pass 63.Fish pass 63 is straight channel.The driving shaft of impeller shaft 71 and generator 8 links together.Generator 8 links together by charger 81 and battery 82, and battery 82 is electrically connected by electric light drive circuit 42 and electric light 41.Electric light drive circuit 42 is existing circuit, and concrete mode is depending on the type of electric light.In electric light drive circuit 42, be provided with light-operated switch 421.Impeller blade 72 is provided with some loopholes 721.The second net wall 2 is isolated between the first fish chamber 4 and the second fish chamber 6 isolation.The aperture area of the mesh 31 on the 3rd net wall is greater than the aperture area of the mesh 21 on the second net wall.Mesh 31 on the 3rd net wall is provided with port lid 5.The port lid 5 of the mesh 31 on the 3rd net wall can only be towards the second interior unlatching in fish chamber 6.Sound-producing device 67 is loudspeaker.Sound-producing device 67 drives by battery 82.
Cut open fish machine 9 for existing equipment.Cut open fish machine 9 and be provided with charging aperture 91.91 pairs of charging apertures are connected to feed pipe 92.Feed pipe 92 comprises buffer memory section 921 and raising section 922.One end of buffer memory section 921 and charging aperture 91 link together, the upper end of the other end and raising section 922 is docking together.Buffer memory section 921 is provided with the 3rd gate 93 and conveyer belt 94.The lower end of raising section 921 and first is got lymphogranuloma inguinale 43 and second and is got lymphogranuloma inguinale 65 and be docking together.In raising section 922, be provided with hoisting mechanism 95.Hoisting mechanism 95 comprises elevator belt 951 and some supporting plates 952 distributing along elevator belt bearing of trend.Certainly hoisting mechanism 95 adopts the elevator of existing structure also can.
The connected mode of the mesh 31 on same the 3rd net wall of port lid 5 of the mesh 31 on the 3rd net wall is identical with the connected mode of the mesh 21 on the second net wall with the port lid 5 of the mesh 21 on the second net wall.Connected mode with regard to the mesh 31 on same the 3rd net wall of port lid 5 of the mesh 31 on the 3rd net wall is described as follows below:
Referring to Fig. 2, the port lid 5 on the mesh 31 on the 3rd net wall and being hinged on the mesh 31 on the 3rd net wall by hinge 52.Sheathed relevant lid spring 53 on hinge 52.Closing lid spring 53 is torsion spring.Port lid 5 is provided with some through holes 51.Through hole 51 connects port lid 5 along port lid opening direction.Through hole 51 is the arcuate socket along the circumferential extension of the circle centered by the axis of hinge 52.Between the aperture area of through hole 51, there is following relation, from the aperture area of the through hole of hinge near distance, be less than from the aperture area of the through hole away from hinge.
The switch of port lid and use procedure of the present invention are:
Referring to Fig. 2, closing under the effect of lid spring 53, port lid 5 be take hinge 52 and is covered on the mesh 31 on the 3rd net wall as axle turns to, and prevents that port lid from being opened by outside towards the second fish chamber 6 the unidirectional unlatching that is realized port lid thereby one end away from hinge of port lid 5 is connected on the 3rd net wall 3.While entering the second fish chamber 6 when the mesh 31 of fish on the 3rd net wall, fish promotes port lid 5 towards the second fish chamber 6 inner rotation, and fish enters the second fish chamber 6, and then port lid 5 is automatically shut under the effect of closing lid spring 53.Large fish, middle fish and small fish can both enter the second fish chamber 6 by the mesh 31 on the 3rd net wall.
Referring to Fig. 1, during use, fish pocket is placed in the waters of fishing for, cut open fish machine 9 and be placed on the bank.At bulb 41, send under the luring of light, fish is positioned at the locellus 62 on dividing plate 61 right sides, mesh 21 on the second net wall and enters the first fish chamber 4 through collecting mesh 31 on mouthful the 12, the 3rd net wall, locellus 62, fish pass 63, the second fish chamber 6 that the second fish chamber 6 is positioned at dividing plate 61 left sides successively.Wherein small fish can (be freely that the present invention can not pick up small fish, large fish is trapped in the second fish chamber 6 after entering the second fish chamber 6 by the present invention, middle fish is trapped in the first fish chamber after further entering the first fish chamber 4, realizes automatically the separating according to size to fish).Now in the second fish chamber, may be mixed with in middle small fish, the first fish chamber and may be mixed with small fish.During fish process fish pass 63, drives impeller 7 is rotated, and impeller 7 drives the electricity that generator 8 generatings, generator 8 send to charge by charger 81 accumulators 82, and battery 82 drives electric lights 41 luminous by electric light drive circuit 42.Under the effect of light-operated switch 421, while making to only have at night, bulb is just luminous.When fish enters into the second fish chamber 6 and is arranged in the locellus 62 in dividing plate 61 left sides, because dividing plate 61 has blocked light, light can only enter this space by the loophole 721 on impeller blade 72, thereby is attracting fish along fish pass 63 to right travel.In the time will catching and killing fish, first make sound-producing device 67 sound, fish gets a fright and produces and flee from phenomenon, and the result of fleeing from is in the first fish chamber, only to leave middle fish, only remaining large fish in the second fish chamber.If catch and kill middle fish, the aperture of opening the first gate 43 and adjusting the 3rd gate 93 makes fish be merely able to list and enters charging aperture 91.Fish in the first fish chamber 4 is got lymphogranuloma inguinale 43 through first and enters raising section 922, and under the effect of hoisting mechanism 95, fish is transported to buffer memory section 921, and under the effect of conveyer belt 94 and the 3rd gate 93, fish is cut open by being cutd open fish machine 9 by only entering charging aperture 91.If catch and kill large fish, the aperture of opening the second gate 66 and adjusting the 3rd gate 93 makes fish be merely able to list and enters charging aperture 91, fish in the second fish chamber 6 is got lymphogranuloma inguinale 65 through second and enters raising section 922, under the effect of hoisting mechanism 95, fish arrives buffer memory section 921, and under the effect of conveyer belt 94 and the 3rd gate 93, fish is cutd open fish machine 9 by only entering charging aperture 91 and cuts open.
Embodiment bis-, referring to Fig. 3, are: the first net wall 1 only comprises diapire 13 and roof 14, and the area of diapire 13 is greater than the area of diapire 14, and the stationarity while using is like this good with the difference of embodiment mono-.The second net wall 2, the 3rd net wall 3 and dividing plate 61 are all tubular structure.Dividing plate 61 is set on the second net wall 2, and the 3rd net wall 3 is set on dividing plate 61.Diapire 13 and roof 14 are sealed on the axial two ends of the second net wall 2, the 3rd net wall 3 and dividing plate 61.Making the first fish chamber 4, two locellus 62 is all loop configuration.In dividing plate 61, being provided with in a plurality of fish pass 63(the present embodiment is 6), the corresponding horn mouth 64 of each fish pass.Fish pass 63 is along the circumferential distribution of the 3rd net wall 3.Impeller shaft 71 in each fish pass 63 is provided with gear 73.Generator 8 is provided with gear ring 83.Gear ring 83 is connected on the driving shaft 85 of generator by connecting rod 84.Gear ring 83 and gear 73 mesh together.
Claims (10)
1. can select the government official fish device of recapturing and dragging for for one kind, comprise and cut open fish machine and fish pocket, the described fish machine that cuts open is provided with charging aperture, it is characterized in that, also comprise feed pipe, described fish stomacher is drawn together the first net wall, the second net wall and the 3rd net wall, described the first net wall and the second net wall surround the first fish chamber, described the first fish chamber is provided with first and gets lymphogranuloma inguinale, described first gets lymphogranuloma inguinale is provided with the first gate, the first net wall, the second net wall and the 3rd net wall surround the second fish chamber, described the second fish chamber is provided with second and gets lymphogranuloma inguinale, described second gets lymphogranuloma inguinale is provided with the second gate, described the second net wall is isolated between described the first fish chamber and the second fish chamber, the aperture area of the mesh on described the first net wall, the aperture area of the mesh on the aperture area of the mesh on the second net wall and the 3rd net wall increases successively, described feed pipe comprises buffer memory section and raising section, described buffer memory section is provided with the 3rd gate and conveyer belt, described buffer memory section is docked between described charging aperture and the upper end of raising section, the lower end of described raising section and described first is got lymphogranuloma inguinale and second and is got lymphogranuloma inguinale and be docking together, in described raising section, be provided with hoisting mechanism.
2. the government official fish device of recapturing and dragging for of selecting according to claim 1, it is characterized in that, mesh on described the second net wall and the mesh on the 3rd net wall are all provided with the port lid of unidirectional unlatching, the described port lid that is arranged in the mesh on described the second net wall is opened towards described the first fish chamber, and the described port lid that is arranged in the mesh on described the 3rd net wall is opened towards described the second fish chamber.
3. the government official fish device of recapturing and dragging for of selecting according to claim 2, is characterized in that, described port lid is provided with some through holes that connect port lid along port lid opening direction.
4. the government official fish device of recapturing and dragging for of selecting according to claim 3, is characterized in that, it is hinged that described port lid and corresponding mesh pass through hinge, and described through hole is the arcuate socket along the circumferential extension of the circle centered by the axis of described hinge.
5. the government official fish device of recapturing and dragging for of selecting according to claim 4, is characterized in that, described through hole is less than from the aperture area of the through hole away from described hinge from the aperture area of the through hole of described hinge near distance.
6. the government official fish device of recapturing and dragging for according to selecting described in claim 1 or 2 or 3 or 4 or 5, is characterized in that, the indoor sound-producing device that is provided with of described the second fish, and described sound-producing device for producing sound before opening the second valve or the first valve.
7. the government official fish device of recapturing and dragging for according to selecting described in claim 1 or 2 or 3 or 4 or 5, it is characterized in that, the indoor electric light that is provided with of described the first fish, the indoor dividing plate that is provided with of described the second fish, described dividing plate is between described the second net wall and the 3rd net wall, and described dividing plate is divided into two locellus by described the second fish chamber, described dividing plate is provided with the fish pass that is communicated with two locellus, in described fish pass, be provided with impeller, described impeller and generator link together, and described generator and described electric light link together.
8. the government official fish device of recapturing and dragging for of selecting according to claim 8, it is characterized in that, described impeller comprises impeller blade and impeller shaft, and described impeller shaft and described generator link together, described impeller blade is provided with loophole, and described dividing plate is resistance photo structure.
9. the government official fish device of recapturing and dragging for of selecting according to claim 8, is characterized in that, described dividing plate is provided with horn mouth towards a side of described the 3rd net wall, and one end and fish pass that described iiared port area is little are docking together.
10. the government official fish device of recapturing and dragging for according to selecting described in claim 1 or 2 or 3 or 4 or 5, it is characterized in that, described the first net wall comprises diapire and roof, described the second net wall and the 3rd net wall are all tubular structure, described the 3rd net wall is set on described the second net wall, and described diapire and roof are connected to the axial two ends of described the second net wall and the 3rd net wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310544175.4A CN103564027B (en) | 2013-11-07 | 2013-11-07 | Fish killing device capable of catching dependent on weight |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310544175.4A CN103564027B (en) | 2013-11-07 | 2013-11-07 | Fish killing device capable of catching dependent on weight |
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| CN103564027A true CN103564027A (en) | 2014-02-12 |
| CN103564027B CN103564027B (en) | 2015-05-27 |
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| CN201310544175.4A Active CN103564027B (en) | 2013-11-07 | 2013-11-07 | Fish killing device capable of catching dependent on weight |
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| CN114411651A (en) * | 2022-03-07 | 2022-04-29 | 安徽理工大学 | Step-by-step paired up-and-down reciprocating combined fishway and fish passing method |
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| CN114411651B (en) * | 2022-03-07 | 2024-03-22 | 安徽理工大学 | Step-by-step paired up-down reciprocating combined fishway and fish passing method |
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| CN103564027B (en) | 2015-05-27 |
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