CN113170768A - Euphausia superba trawl catches fishing in succession and catches supplementary conveyor of fishing catch - Google Patents
Euphausia superba trawl catches fishing in succession and catches supplementary conveyor of fishing catch Download PDFInfo
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- CN113170768A CN113170768A CN202110592342.7A CN202110592342A CN113170768A CN 113170768 A CN113170768 A CN 113170768A CN 202110592342 A CN202110592342 A CN 202110592342A CN 113170768 A CN113170768 A CN 113170768A
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- 241000239370 Euphausia superba Species 0.000 title claims abstract description 21
- 241000238557 Decapoda Species 0.000 claims abstract description 45
- 230000007246 mechanism Effects 0.000 claims abstract description 23
- 238000003306 harvesting Methods 0.000 claims abstract description 9
- 241000239366 Euphausiacea Species 0.000 claims description 20
- 238000003756 stirring Methods 0.000 claims description 11
- 230000001681 protective effect Effects 0.000 claims description 5
- 235000017166 Bambusa arundinacea Nutrition 0.000 abstract description 9
- 235000017491 Bambusa tulda Nutrition 0.000 abstract description 9
- 241001330002 Bambuseae Species 0.000 abstract description 9
- 235000015334 Phyllostachys viridis Nutrition 0.000 abstract description 9
- 239000011425 bamboo Substances 0.000 abstract description 9
- 238000005086 pumping Methods 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000013461 design Methods 0.000 description 6
- 241000251468 Actinopterygii Species 0.000 description 4
- RLLPVAHGXHCWKJ-IEBWSBKVSA-N (3-phenoxyphenyl)methyl (1s,3s)-3-(2,2-dichloroethenyl)-2,2-dimethylcyclopropane-1-carboxylate Chemical compound CC1(C)[C@H](C=C(Cl)Cl)[C@@H]1C(=O)OCC1=CC=CC(OC=2C=CC=CC=2)=C1 RLLPVAHGXHCWKJ-IEBWSBKVSA-N 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Classifications
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- 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
- A01K75/00—Accessories for fishing nets; Details of fishing nets, e.g. structure
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Marine Sciences & Fisheries (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Screw Conveyors (AREA)
Abstract
The invention relates to an auxiliary conveying device for continuously fishing and harvesting euphausia superba trawl, which comprises a net bag interface, a main conveying pipe and a shrimp suction pump pipeline interface which are sequentially connected, wherein the shrimp suction pump pipeline interface is also connected with a secondary auxiliary conveying device for fishing and harvesting. Secondary catch auxiliary conveyor includes protection tube, a spiral blade section of thick bamboo and hydrodynamic force actuating mechanism, a spiral blade section of thick bamboo rotationally sets up in the protection tube, hydrodynamic force actuating mechanism locates the protection tube both sides, is connected with a spiral blade section of thick bamboo through the gear train. According to the invention, when the main conveying pipe continuously conveys the catches, the catches are shunted and scattered by the additionally arranged secondary catch auxiliary conveying device, so that the catches are conveyed more smoothly, and the recoil dredging work of the shrimp suction pump is not influenced because the secondary conveying device and the main conveying pipe adopt shunting conveying, so that the continuity of pumping and transferring catches is further ensured.
Description
Technical Field
The invention belongs to the field of towed fishing nets, and particularly relates to an auxiliary conveying device for continuously fishing and harvesting a fishing catch by a trawl of Antarctic krill.
Background
The continuous fishing of the euphausia superba trawl refers to that the trawl is connected with the tail end of the trawl through a shrimp suction pump in the process of fishing the euphausia superba by being pulled and moved, and the harvested objects collected by the trawl net bags are synchronously transferred to a fishing ship, so that the continuous fishing mode of avoiding net lifting is achieved. In the actual use of continuous fishing, the catch amount of the antarctic krill continuously changes along with time, and the suction end is seriously blocked due to the fact that the suction speed of a shrimp suction pump is exceeded when the catch amount is large. According to a pumping fishing structure capable of realizing continuous fishing of a dragnet of antarctic krill disclosed by a patent of a continuous pumping fishing system of antarctic krill near the ship end (publication No. CN109463359A), the inventor improves and designs an auxiliary conveying device for the continuous fishing of the dragnet of the antarctic krill based on dragging power (publication No. CN212488061U), and the problem that the tail of a sac is easy to block when the fishing amount is large is solved by additionally installing a dragging hydrodynamic driving mechanism and a friendly screw conveyor.
However, gaps are inevitably left between the screw type blades and the side walls of the friendly screw conveyor in the original design, so that the catches are wound in the gaps and damaged, and the catch quality is influenced. The hydrodynamic force drive mechanism in the original design is arranged behind the outer shell cover, so that water flow is blocked by the outer shell cover to generate vortex, and the power provided by the water flow is reduced. In addition, the shrimp suction pump on the ship runs in reverse when a blockage occurs, trying to unblock the pipeline by back flushing. At the moment, the steering of the external propeller and the friendly spiral conveyor arranged in the main conveying pipeline is fixed in the original design, so that the reverse rotation cannot be realized, and the recoil dredging is resisted or even cannot be carried out. In order to improve the defects, the auxiliary conveying device for the continuous fishing catch of the krill trawl needs to be redesigned.
Disclosure of Invention
The invention aims to solve the technical problem of providing an auxiliary conveying device for continuously fishing and catching a trawl, which does not block the backflushing dredging work of a shrimp suction pump during blockage while continuously conveying the catch by an auxiliary continuous pump suction catching system, and further ensures the continuity of pumping and transferring the catch by a pump.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a euphausia superba trawl catches fishing in succession and catches supplementary conveyor, including the net bag interface that connects gradually, main conveyer pipe and inhale shrimp pump pipeline interface, inhale shrimp pump pipeline interface and be the tee bend interface, respectively with inhale shrimp pump connecting pipe, main conveyer pipe and secondary fishing and catch supplementary conveyor and link to each other, secondary fishing catches supplementary conveyor's the other end and links to each other with net bag interface, a serial communication port, secondary fishing catches supplementary conveyor and includes protection tube, a spiral blade section of thick bamboo and hydrodynamic drive mechanism, a spiral blade section of thick bamboo rotationally sets up in the protection tube, hydrodynamic drive mechanism locates the protection tube both sides, is connected with a spiral blade section of thick bamboo through the gear train.
Hydrodynamic drive mechanism by arrange respectively in an impeller, No. two impellers, No. three impellers and No. four impellers of protection tube both sides constitute, all the paddle outside of impeller is equipped with the teeth of a cogwheel, two impeller teeth of a cogwheel meshes of homonymy, and the paddle is revolved to opposite, No. two impellers are revolved to the same with No. three impeller paddles.
The spiral blade cylinder is composed of a cylinder body and three spiral blades which are uniformly distributed around a spiral blade shaft by 120 degrees, and the spiral blades are fixedly connected with the cylinder body and can rotate together.
The center pin of four impellers is rotationally installed through the bearing respectively on the trident support in four cylinder type fairings of protection tube both sides total, cylinder type fairing with the protection tube is fixed connection, the front and back of cylinder type fairing all does not shelter from the thing.
The gear train includes driving gear, gear shaft and driven gear, the driving gear is located between No. two impellers and No. three impellers, with the teeth of a cogwheel intermeshing of No. two impellers and No. three impellers, the axle center and the gear shaft fixed connection of driving gear, the other end of gear shaft be equipped with the gear and with the driven gear meshing of spiral blade section of thick bamboo upper end, the driving gear is the straight-teeth gear tooth, the gear of gear shaft tip is bevel gear, driven gear is equipped with the safety cover outward.
The gear set comprises a driving gear, a gear shaft and driven teeth arranged on the upper edge of the spiral blade cylinder, the driving gear is located between the second impeller and the third impeller and is meshed with gear teeth of the second impeller and the third impeller, the driving gear is a straight gear, the axis of the driving gear is fixedly connected with the gear shaft, and the other end of the gear shaft is provided with a driven helical gear which is meshed with helical gear teeth arranged on the upper edge of the spiral blade cylinder.
The teeth of a cogwheel of an impeller, No. two impellers, No. three impellers and No. four impellers are straight gear teeth, No. two impellers and No. three impeller paddles are dextrorotation, an impeller and No. four impeller paddles are the levogyration, helical blade in the helical blade section of thick bamboo is the dextrorotation.
The net bag interface is in a shape of a round-mouth funnel, the round-mouth end of the net bag interface is connected with the tail end of the net bag of the krill trawl through a flange, and an inclined shrimp guide plate is arranged on the bottom surface of the funnel.
The net bag interface and the connection port of the main conveying pipe are located on the side face of the net bag interface close to the inclined shrimp guiding plate, and the net bag interface and the connection port of the secondary fishing catch auxiliary conveying device are located on the same side of the connection port of the main conveying pipe and far away from the inclined shrimp guiding plate.
And a spiral stirring paddle is further arranged in the net bag interface and below the interface of the secondary fishing catch auxiliary conveying device, a rotating shaft of the spiral stirring paddle is connected with a rotating shaft of the spiral blade, and the pitch of the spiral stirring paddle is larger than that of the spiral blade.
Advantageous effects
Compared with the original design, the invention has the following advantages:
1. through install additional in one side of net bag interface and use hydrodynamic drive's secondary auxiliary conveyor, provide a stable auxiliary transport volume when the catch is carried, can enough be with entering into catch thing and the water homogeneous mixing in the main transfer pipe, can prevent again that the krill from leading the position too much gathering of shrimp board in net bag interface bottom, effectively reduce the jam incidence, promote the smooth and easy nature of the continuous fishing of trawl.
2. The position of the hydrodynamic force driving mechanism is modified, so that no barrier exists in the front and at the back of the hydrodynamic force driving mechanism, the vortex is prevented from being generated by the barrier, the strength of water flow is increased, and the transmission quantity of the secondary auxiliary conveying device is increased. The hydrodynamic drive mechanism is provided with four impellers in total, so that the moment of finally inputting the driving gear and the spiral blade cylinder is improved, and the stable conveying capacity provided by the secondary auxiliary conveying device is further improved.
3. The helical blade and the barrel in the helical blade barrel in the secondary auxiliary conveying device are in seamless connection, the barrel is directly driven to rotate by the hydrodynamic driving mechanism, and unnecessary damage to the catch caused by the fact that the catch is rolled into a gap between the blade and the barrel wall due to independent rotation of the blade is avoided.
4. The secondary auxiliary conveying device is separated from the main conveying pipeline and is not directly arranged in the main conveying pipeline any more. When the krill at the bottom of the net bag port is blocked due to the overlarge catch amount, the secondary auxiliary conveying device far away from the shrimp guide plate cannot block the backflushing dredging work performed by the shrimp suction pump, and the continuity of pumping and transferring the catch is further guaranteed.
5. In order to further avoid the gathering and blocking of the catches at the bottom of the net bag interface, a spiral stirring paddle is additionally arranged at the bottom of the secondary auxiliary conveying device, so that the catches are stirred before reaching the main conveying pipe. Therefore, the pitch of the spiral stirring paddle is larger than that of the spiral blade, so that a part of the fish catches are more easily sucked into the secondary auxiliary conveying device along with water flow, and the secondary auxiliary conveying device is not blocked.
Drawings
FIG. 1 is a structural diagram of an auxiliary conveying device for continuously fishing and harvesting euphausia superba trawl, wherein 1-a sac interface; 2-a main conveying pipe; 3-a shrimp sucking pump pipeline interface; 4-secondary catch auxiliary conveying device.
Figure 2 is a schematic view of the structure of the mesh sac interface device,
wherein, 101-the shrimp guide plate is inclined.
FIG. 3 is a view showing the construction of the secondary catch auxiliary conveyor, wherein 41-the protective tube; 42-helical blade cartridge; 43-hydrodynamic drive mechanism.
FIG. 4 is a block diagram of the hydrodynamic drive mechanism portion of the secondary catch auxiliary conveyor, wherein impeller number 431-one; 432-impeller number two; 433-impeller number three; 434-impeller number four; 435-cylindrical fairing
FIG. 5 is a schematic structural view of a gear set and a helical blade cartridge portion of the secondary catch assist conveyor, wherein 421-cartridge; 422-helical blades; 441-a driving gear; 442-gear shaft; 443-driven gear.
FIG. 6 is a sectional structure view of a screw propeller,
among them, 423-helical paddles.
Like reference symbols in the various drawings indicate like elements.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
As shown in fig. 1 and 2, the continuous fishing auxiliary conveying device for the trawl of the antarctic krill comprises a net bag connector 1, a main conveying pipe 2 and a shrimp suction pump pipeline connector 3 which are sequentially connected, wherein the shrimp suction pump pipeline connector 3 is a three-way connector and is respectively connected with a shrimp suction pump connecting pipe, the main conveying pipe 2 and a secondary fishing auxiliary conveying device 4. The other end of the secondary fishing catch auxiliary conveying device 4 is connected with the net bag interface 1, the net bag interface 1 is in a round-mouth funnel shape, the round-mouth end of the round-mouth funnel is connected with the tail end of the net bag of the euphausia superba trawl through a flange, and the bottom surface of the funnel is provided with an inclined shrimp guiding plate 101. The net bag interface 1 and the main conveying pipe 2 are connected at the side of the net bag interface 1 close to the inclined shrimp guiding plate 101, and the net bag interface 1 and the secondary auxiliary fishing catch conveying device 4 are connected at the same side of the main conveying pipe connector and far away from the inclined shrimp guiding plate 101.
As shown in fig. 3, the secondary auxiliary transportation device 4 includes a protection tube 41, a spiral blade cylinder 42 and a hydrodynamic driving mechanism 43, wherein two ends of the protection tube 41 are respectively provided with a support, the spiral blade cylinder 42 is rotatably connected with the protection tube 41 through a rolling bearing arranged in the center of the support, and the hydrodynamic driving mechanism 43 is arranged on two sides of the protection tube 41 and is connected with the spiral blade cylinder 42 through a gear set.
As shown in fig. 4, the hydrodynamic drive mechanism 43 is composed of a first impeller 431, a second impeller 432, a third impeller 433 and a fourth impeller 434 respectively disposed at both sides of the protection pipe 41. The four impellers are four-blade impellers, a circle of gear teeth are arranged on the outer sides of the blades and can rotate together with the blades to transmit power, the blades of the second impeller 432 and the third impeller 433 rotate rightwards, and the blades of the first impeller 431 and the fourth impeller 434 rotate leftwards. The center pin of four impellers is rotationally installed through antifriction bearing respectively on the trident support in the cylinder type radome fairing 435 of protection tube 41 both sides, cylinder type radome fairing 435 with protection tube 41 is fixed connection, cylinder type radome fairing 435's front and back do not all shelter from the thing.
Spiral blade section of thick bamboo 42 comprises barrel 421 and three spiral blade 422 around spiral blade axle 120 evenly distributed, adds man-hour earlier with barrel 421 lateral wall opening will at the opening part spiral blade 422 and barrel 421 carry out seamless welded connection, welds closed lateral wall at last and makes spiral blade 422 and barrel 421 seamless fixed connection, makes spiral blade 422 can drive barrel 421 and rotate together, avoids the catch of fish to be drawn into the clearance of spiral blade and barrel simultaneously and causes unnecessary loss.
Since the spiral blade cylinder 42 in embodiment 1 can be made of different materials, for example, the use of stainless steel material may result in a heavier spiral blade cylinder 42, and the gear set can be modified in the case that the gear set cannot be driven to rotate. In embodiment 2, the gear set connecting the hydrodynamic drive mechanism 43 to the spiral blade cylinder 42 includes a driving gear 441, a gear shaft 442, and a driven gear fixedly formed on the upper edge of the spiral blade cylinder 42, and the driven gear is a bevel gear. The driving gear 441 is positioned between the second impeller 432 and the third impeller 433 and is meshed with gear teeth of the second impeller 432 and the third impeller 433, the driving gear 441 is a straight gear, the axis of the driving gear 441 is fixedly connected with a gear shaft 442, and the other end of the gear shaft 442 is provided with a driven helical gear which is meshed with helical gear teeth arranged on the upper edge of the helical blade cylinder 42.
On the basis of embodiment 1 or embodiment 2, the secondary fishing auxiliary conveying device 4 can be further improved. Embodiment 3 as shown in fig. 6, a spiral stirring paddle 423 is further arranged below the connection port of the net bag interface 1 and the secondary fishing line auxiliary conveying device 4, the rotating shaft of the spiral stirring paddle 423 is connected with the rotating shaft of the spiral blade 422, and the pitch of the spiral stirring paddle 423 is larger than that of the spiral blade 422. The extended helical paddles 423 allow the fish catches to be spread before reaching the main conveyor pipe 2, and the difference in pitch allows a portion of the fish catches to be more easily sucked into the secondary auxiliary conveyor with the water flow, without causing the secondary auxiliary conveyor to be blocked.
The method of using the present invention will be described in detail with reference to example 1. The invention is firstly applied to the continuous fishing operation of the trawl of the antarctic krill, but does not exclude the application of the trawl continuous fishing operation of other kinds of fishery products by slightly improving the size, the structure and the like in the future. Before the net is off, the net bag port 1 is connected with the tail end of the net bag of the special krill trawl through a flange. The shrimp suction pump pipeline connector 3 is also connected with a shrimp suction pump connecting pipe through a flange, and the other end of the shrimp suction pump connecting pipe is connected into a shrimp suction pump. After the connection is finished, the auxiliary conveying device for continuously fishing the fishing catch of the euphausia superba trawl is placed into water along with the euphausia superba trawl.
When the trawler cruises and catches, firstly, a shrimp suction pump arranged on the trawler is started, and the Antarctic krill gathered at the bottom of the net bag interface 1 and the inclined shrimp guide plate 101 is sucked to the trawler through the main conveying pipe 2 by the suction force provided by the shrimp suction pump. Meanwhile, the water flow drives the hydrodynamic driving mechanism 43 of the secondary auxiliary fishing catch conveying device 4 to operate, so that the four impellers start to rotate according to a preset rotation direction, power is sequentially provided to the gear set driving gear 441, the gear shaft 442 and the driven gear 443 which are meshed with the four impellers, and finally the power is transmitted to the spiral blade cylinder 42, and the spiral blade cylinder 42 rotates to generate water flow from bottom to top so as to convey a part of euphausia superba to the shrimp suction pump connecting pipe through the shrimp suction pump pipe connector 3.
When the euphausia superba trawl boat works, the normal towing speed is 2.5 knots, at the moment, the design rotating speed of the spiral blade cylinder 42 of the secondary fishing catch auxiliary conveying device 4 is 150r/min, extra stable conveying efficiency of about 105T/H can be provided for the main conveying pipe 2 at the moment according to calculation, the work of a shrimp suction pump is reduced, and energy is saved.
The suction efficiency of the shrimp suction pump for the antarctic krill in the main conveying pipe 2 is 360T/H, but the catch amount of the antarctic krill is not so stable, and the catch amount is less than 50T/H when the catch amount is less. When the capture amount of the antarctic krill gradually rises and exceeds the suction limit of the shrimp suction pump 360T/H, the secondary fishing catch auxiliary conveying device 4 actively shares the shrimp amount through a connecting port in front of the main conveying pipe 2 and disperses large shrimp balls through the spiral blade cylinder 42, so that the bottom end of the net bag connecting port 1 is prevented from being blocked.
When the amount of captured antarctic krill is too large for a while, blockage at the sac port 1 may still result. At the moment, the crew can enable the shrimp sucking pump to reversely recoil the main conveying pipe 2 for dredging, and the secondary auxiliary fishing catch conveying device 4 is not arranged in the line where the main conveying pipe 2 is located, so that the recoil dredging is not influenced, and the operation of the continuous fishing catch conveying device for the euphausia superba trawl is facilitated.
Claims (10)
1. An auxiliary conveying device for continuously fishing and harvesting a fishing catch by a trawl of Antarctic krill comprises a cod end interface (1), a main conveying pipe (2) and a shrimp suction pump pipeline interface (3) which are connected in sequence, the shrimp suction pump pipeline connector (3) is a three-way connector and is respectively connected with the shrimp suction pump connecting pipe, the main conveying pipe (2) and the secondary fishing catch auxiliary conveying device (4), the other end of the secondary fishing catch auxiliary conveying device (4) is connected with the net sac interface (1), it is characterized in that the secondary catch auxiliary conveying device (4) comprises a protective tube (41), a spiral blade cylinder (42) and a hydrodynamic driving mechanism (43), the spiral blade cylinder (42) is rotatably arranged in the protective tube (41), the hydrodynamic driving mechanism (43) is arranged on two sides of the protection tube (41) and is connected with the spiral blade cylinder (42) through a gear set.
2. The device for continuously fishing and conveying the euphausia superba trawl according to claim 1, wherein the hydrodynamic drive mechanism (43) comprises a first impeller (431), a second impeller (432), a third impeller (433) and a fourth impeller (434) which are respectively arranged at two sides of the protection tube (41), gear teeth are arranged at the outer sides of all the impellers, the gear teeth of the two impellers at the same side are meshed, the rotation directions of the blades are opposite, and the rotation directions of the two impellers corresponding to the horizontal positions at the opposite sides are the same.
3. The Euphausia superba trawl continuous fishing catch auxiliary transportation device according to claim 2, wherein the spiral blade cylinder (42) is composed of a cylinder body (421) and three spiral blades (422) uniformly distributed around a spiral blade axis by 120 degrees, and the spiral blades (422) are fixedly connected with the cylinder body (421) and can rotate together with the cylinder body.
4. The device for continuously fishing and auxiliary conveying antarctic krill trawl according to claim 2, wherein the central shafts of the four impellers are rotatably mounted on the three-fork supports in four cylindrical cowlings (435) on both sides of the protection tube (41) through bearings, the cylindrical cowlings (435) are fixedly connected with the protection tube (41), and no shielding object is arranged in front of and behind the cylindrical cowlings (435).
5. The euphausia superba trawl continuous fishing harvesting fishery auxiliary conveying device according to claim 1, wherein the gear set comprises a driving gear (441), a gear shaft (442) and a driven gear (443), the driving gear (441) is positioned between the second impeller (432) and the third impeller (433) and is meshed with the gear teeth of the second impeller (432) and the third impeller (433), the axis of the driving gear (441) is fixedly connected with the gear shaft (442), the other end of the gear shaft (442) is provided with a gear and is meshed with the driven gear (443) at the upper end of the spiral blade cylinder (42), the driving gear (441) is straight gear teeth, the gear at the end of the gear shaft (442) is a bevel gear, the driven gear (443) is a bevel gear, and the driven gear (443) is externally provided with a protective cover.
6. The euphausia superba trawl continuous fishing and harvesting auxiliary conveying device according to claim 1, wherein the gear set comprises a driving gear (441), a gear shaft (442) and driven teeth arranged on the upper edge of the spiral blade cylinder (42), the driving gear (441) is positioned between the second impeller (432) and the third impeller (433) and is meshed with the gear teeth of the second impeller (432) and the third impeller (433), the driving gear (441) is a straight gear, the axis of the driving gear is fixedly connected with the gear shaft (442), and the other end of the gear shaft (442) is provided with a driven bevel gear which is meshed with bevel gear teeth arranged on the upper edge of the spiral blade cylinder (42).
7. The auxiliary conveyor for the continuous fishing of the euphausia superba trawl according to claim 5 or 6, wherein the gear teeth of the first impeller (431), the second impeller (432), the third impeller (433) and the fourth impeller (434) are straight gear teeth, the second impeller (432) and the third impeller (433) are right-handed, the first impeller (431) and the fourth impeller (434) are left-handed, and the helical blade (422) in the helical blade cylinder (42) is right-handed.
8. The device for continuously fishing and auxiliary conveying euphausia superba trawl according to claim 1, wherein the sac port (1) is a round-mouth funnel shape, the round-mouth end of the sac port (1) is connected with the tail end of the sac of the euphausia superba trawl through a flange, and the bottom surface of the funnel is provided with an inclined shrimp guiding plate (101).
9. The euphausia superba trawl continuous fishing and harvesting auxiliary conveying device according to claim 8, wherein the connecting ports of the net bag port (1) and the main conveying pipe (2) are positioned at the side of the net bag port (1) close to the inclined shrimp guiding plate (101), and the connecting ports of the net bag port (1) and the secondary fishing and harvesting auxiliary conveying device (4) are positioned at the same side of the connecting port of the main conveying pipe and are far away from the inclined shrimp guiding plate (101).
10. The antarctic krill trawl continuous fishing auxiliary conveying device according to claim 8, characterized in that a spiral stirring paddle (423) is further arranged in the net bag interface (1) below the connection port of the secondary fishing auxiliary conveying device (4), the rotating shaft of the spiral stirring paddle (423) is connected with the rotating shaft of the spiral blade (422), and the pitch of the spiral stirring paddle (423) is larger than that of the spiral blade (422).
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| CN202110592342.7A CN113170768B (en) | 2021-05-28 | 2021-05-28 | Auxiliary conveying device for euphausia superba trawl continuous fishing |
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| CN202110592342.7A CN113170768B (en) | 2021-05-28 | 2021-05-28 | Auxiliary conveying device for euphausia superba trawl continuous fishing |
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