阅读说明：本技术 一种新型减少副渔获物拖网 (A kind of novel reduction by-catch trawlnet ) 是由 唐伟尧 宋伟华 刘莉莉 于 2019-08-27 设计创作，主要内容包括：本发明公开一种新型减少副渔获物拖网,属于水产捕捞技术领域,包括网衣、诱鱼器鱼网囊、虾网囊,网衣的左侧端部连接框架,网衣右侧连接有鱼网囊,鱼网囊下方连接有虾网囊,鱼网囊内部设有至少组分筛板,鱼网囊右侧端部开设有逃逸窗口。本发明能有效的对副渔获物进行筛分并将副渔获物排至网衣外部,极大的减少了副渔获物的捕捞的同时降低了渔获物的暂养密度。(The present invention discloses a kind of novel reduction by-catch trawlnet, belong to aquatic product fishery technical field, including etting, fish-catching container fishnet capsule, shrimp net capsule, the left end connection framework of etting, fishnet capsule is connected on the right side of etting, shrimp net capsule is connected with below fishnet capsule, the intracapsular portion of fishnet is equipped at least component sieve plate, fishnet capsule right-hand end and offers escape window.The present invention can effectively sieve by-catch and drain into by-catch outside etting, and greatly reducing reduces the temporary of catches while the fishing of by-catch supports density.)

1. a kind of novel reduction by-catch trawlnet, including etting (1), fish-catching container (3) fishnet capsule (5), shrimp net capsule (6), special Sign is: the left end connection framework (2) of the etting (1), is connected with fishnet capsule (5), the fish on the right side of the etting (1) It is connected with shrimp net capsule (6) below net capsule (5), at least 2 component sieve plates (4), the fishnet capsule is equipped with inside the fishnet capsule (5) (5) right-hand end offers escape window (13).

2. a kind of novel reduction by-catch trawlnet according to claim 1, it is characterised in that: at the top of the etting (1) Equipped with fish-catching container (3), the edge of etting (1) bottom is equipped with clump weight (8).

3. a kind of novel reduction by-catch trawlnet according to claim 1 or 2, it is characterised in that: the fish-catching container (3) Including material collecting tank (18), the bottom of the material collecting tank (18) is equipped with several material spilling holes (16), sets on the left of the material collecting tank (18) Have waterproof housing (15), is equipped with fish-luring light (20) inside the waterproof housing (15), the fish-luring light (20) and battery (19) It is electrically connected, the right side of the material collecting tank (18) is equipped with supersonic generator (17).

4. a kind of novel reduction by-catch trawlnet according to claim 1, it is characterised in that: the fishnet capsule (5) Right-hand end is equipped with escape window (13), and the flexible web plate (14) that described escape window (13) surface loop cloth outwardly protrudes is described The end of flexible web plate (14) is arc-shaped, and the end of flexible web plate (14) is to gathering at escape window (13) center.

5. a kind of novel reduction by-catch trawlnet according to claim 1, it is characterised in that: the fishnet capsule (5) Mesh aperture is greater than the mesh aperture of shrimp net capsule (6), is equipped with separation mesh sheet (4) at the Nang Kou of the shrimp net capsule (6), the fishnet Skylight mesh sheet (9) are equipped with before capsule (5) and etting (1), the skylight mesh sheet (9) tilts down setting from front to back.

6. a kind of novel reduction by-catch trawlnet according to claim 1, it is characterised in that: in the sub-sieve plate (4) Portion is equipped with into fish ring (12), and the surrounding into fish ring (12) is connected with rib (12) one end, and rib (12) other end connects It connects on the inside of sub-sieve plate (4), the inner loop into fish ring (12) is furnished with ball (10).

7. a kind of novel reduction by-catch trawlnet according to claim 1, it is characterised in that: the fishnet capsule (5) with It is separated between shrimp net capsule (6) by the way that web plate (21) are isolated, the mesh size of isolation web plate (21) is less than the net of shrimp net capsule (6) Mesh size.

Technical field

The invention belongs to aquatic product fishery technical fields, and in particular to a kind of novel reduction by-catch trawlnet.

Background technique

Trawl fishing is the important operation mode of one of China's fish production, and trawl fishing operating area is big, catch Greatly, therefore in the marine organisms of trawlnet crossed sea area capture collected among net regardless of type, size, receive need after net by fishery harvesting into Row sorts, classification storage, this process needs to spend a large amount of artificial and working hours, will increase operating cost, drags in slow fishery harvesting circulation City's rhythm, influences income.

At present countries in the world be directed to the characteristics of national trawl-net fishing, it is main catch object and carried out fruitful selectivity grind Study carefully, and achieve ideal effect, but reflect more practical problem in popularization and application process, needs further Perfect, raising.

Therefore, it is necessary to study a kind of novel reduction by-catch trawlnet.

Summary of the invention

The purpose of the present invention is to provide a kind of novel reduction by-catch trawlnets, can effectively sieve to by-catch Divide and drain into by-catch outside etting, greatly reducing reduces the temporary of catches while the fishing of by-catch supports Density.

The technical solution that the present invention is taken to achieve the above object are as follows: a kind of novel reduction by-catch trawlnet, including Etting, fish-catching container fishnet capsule, shrimp net capsule, the left end connection framework of etting are connected with fishnet capsule on the right side of etting, under fishnet capsule Side is connected with shrimp net capsule, and the intracapsular portion of fishnet is equipped at least component sieve plate, fishnet capsule right-hand end and offers escape window.The present apparatus Catches are caught by the characteristic and catches of catches different habit, the fishnet capsule and shrimp net connected on the right side of etting Capsule is collected fishing to fishes and shrimps, and the intracapsular space of fishnet is divided into muti-piece, on the one hand accelerates the by-catch trip of fishing Fish net capsule, on the other hand avoid fish be deposited in fishnet it is intracapsular caused by competition of the fish to living space, secondary fishery harvesting The sub-sieve plate that object can swim across setting is pierced by escape window, only needs a small amount of sorting after receiving net, which does not have to spend a large amount of It in artificial and working hour, improves work efficiency, indirectly ensure that the rhythm of catches circulation listing, ensure that the economic effect of fisherman Benefit.

Preferably, being equipped with fish-catching container at the top of etting, the edge of etting bottom is equipped with clump weight.Attracting at the top of etting Device catches catches as much as possible, the clump weight of etting bottom is vertically arranged, and increases etting for the attraction to catches Stability during fishing will not comparatively fast make etting deformation to the fishery harvesting object table of compressing due to water flow.

Preferably, fish-catching container includes material collecting tank, the bottom of material collecting tank is equipped with several material spilling holes, is equipped on the left of material collecting tank Waterproof housing, waterproof casing interior are equipped with fish-luring light, and fish-luring light and battery are electrically connected, and the right side of material collecting tank is equipped with ultrasonic wave Generator.Sonic generator inside fish-catching container can issue the sound wave of different frequency, and spread rapidly, through water layer more passing Far, the raw meat fragrance that the bait inside material collecting tank can blow out strong by the immersion of water body, then cooperate the irradiation of fish-luring light, fish are logical Crossing luring for aforesaid way can be abnormal excited, and quickly trip comes, and is unconsciously entering in etting, the fish-catching container attracting effect Good, attracting amount is big and the attracting time is short, and when use is very convenient.

Preferably, the right-hand end of fishnet capsule is equipped with escape window, the flexibility that escape window surface ring cloth outwardly protrudes Web plate, the end of flexible web plate are arc-shaped, and the end of flexible web plate is to gathering at escape window center.Escape window surface The flexible web plate of connection have certain bending angle to escape window center at gather, which, which has by-catch, preferably draws Lead effect, it guided to flee from fishnet capsule, due to flexible net board group at outlet it is smaller, be directed out in by-catch and swim out of fishnet It is difficult to swim from outlet into ensure that the reliability of device, be set as circular arc using flexible web plate and by web plate end again after capsule Shape is avoided that by-catch body surface is scratched, further protection by-catch.

Preferably, the mesh aperture of fishnet capsule is greater than the mesh aperture of shrimp net capsule, separation is equipped at the Nang Kou of shrimp net capsule It is equipped with skylight mesh sheet before mesh sheet, fishnet capsule and etting, skylight mesh sheet tilts down setting from front to back.The Burden-Swimming Ability of KM of fish It is better than the Burden-Swimming Ability of KM of shrimps, shrimps can be forced through separation mesh sheet under the impact of water flow and enter in shrimp net capsule, separate mesh The mesh size of piece and the body size of shrimps are similar, it is ensured that shrimps can be normal through, and meeting when fish encounter separation mesh sheet It is blocked, so that guidance is to upper layer fishnet capsule, the skylight mesh sheet mesh size of fishnet capsule end is slightly less than the figure of normal fish Size, juvenile fish can flee from etting by skylight mesh sheet, reduce the fishing of by-catch.

Preferably, the surrounding that sub-sieve intralamellar part is equipped with into fish ring, into fish ring is connected with rib one end, the rib other end connects It connects on the inside of sub-sieve plate, the inner loop into fish ring is furnished with ball.Sub-sieve plate has supporting role, Neng Gouzeng to fishnet capsule and entire trawlnet The stability for adding fishnet capsule avoids causing unnecessary injury to fish body during fishing, reduces the survival rate of fish, sub-sieve plate The interior size into fish ring can be set according to the actual situation, juvenile fish and big fish can be carried out screening differentiation, be worn by-catch Touring around into fish to fishnet capsule for two layers of sub-sieve plate is crossed, while the fish of fishing can also be carried out separation appropriate by sub-sieve plate, Living space is provided for a certain number of fish, and is not in fish body clustering phenomena, high density is can effectively avoid and causes individual Between mutually meet with attack, prevent " community stress " in population from acting on aggravation, make reduction, the bait of fish movement energy consumption or oxygen consumption Consumption rate decline, metabolic exhaustion change the growth to fish and generate active influence, and the ball being arranged into fish ring inner ring is in juvenile fish Body surface can be generated when swimming across to it and generates rolling power, at this point, juvenile fish will receive scaring, is swum out of to escape window direction rapidly, into The presence for reducing the intracapsular by-catch of fishnet of one step.

Preferably, being separated between fishnet capsule and shrimp net capsule by the way that web plate is isolated, the mesh size that web plate is isolated is less than shrimp The mesh size of net capsule, the mesh that web plate is isolated is smaller, can effectively prevent catches between fishnet capsule and shrimp net capsule back and forth Vibration, it can be ensured that effective classification of catches, moreover it is possible to by by-catch row except etting, reduce the capture of by-catch.

Compared with prior art, the invention has the benefit that the present apparatus is different by the characteristic and catches of catches Habit catches are caught, the intracapsular sub-sieve plate of fishnet separates catches and by-catch, reduces by-catch and stays Inside etting, while the fish of fishing can also be carried out separation appropriate by sub-sieve plate, provide existence for a certain number of fish Space, and be not in fish body clustering phenomena, it can effectively avoid high density and cause mutually to meet with attack, fishnet capsule right side between individual The escape window of end has preferable guiding function to by-catch, it is guided to flee from fishnet capsule, due to flexible net board group at It exports smaller, is difficult to swim from outlet into ensure that the reliable of device again after by-catch is directed out and swims out of fishnet capsule Property.

Detailed description of the invention

Fig. 1 is a kind of novel reduction by-catch trawlnet structural schematic diagram；

Fig. 2 is the schematic diagram of internal structure of fishnet capsule；

Fig. 3 is the main view of sub-sieve plate；

Fig. 4 is the schematic diagram of internal structure of fish-catching container；

Fig. 5 is the structural schematic diagram of escape window.

Description of symbols: 1 etting；2 frames；3 fish-catching containers；4 sub-sieve plates；5 fishnet capsules；6 shrimp net capsules；7 separation mesh sheets；8 Clump weight；9 skylight mesh sheet；10 balls；11 ribs；12 into fish ring；13 escape windows；14 flexible web plates；15 waterproof housings；16 leakages Expect hole；17 supersonic generators；18 material collecting tanks；19 batteries；20 fish-luring lights；21 isolation web plates.

Specific embodiment

Present invention is further described in detail with attached drawing with reference to embodiments: