CN211671951U - Clam seedling density-thinning device - Google Patents
Clam seedling density-thinning device Download PDFInfo
- Publication number
- CN211671951U CN211671951U CN202020151496.3U CN202020151496U CN211671951U CN 211671951 U CN211671951 U CN 211671951U CN 202020151496 U CN202020151496 U CN 202020151496U CN 211671951 U CN211671951 U CN 211671951U
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- CN
- China
- Prior art keywords
- collecting box
- clam
- shellfish
- scraper
- seabed
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
Abstract
The utility model discloses a clam fry density-distributing device, which comprises a shellfish collecting box with an open lower side surface, wherein the rear end of the shellfish collecting box is provided with a scraper blade, and the front end of the shellfish collecting box is connected with a lifting pipeline; the shell collecting box is also connected with a traction frame. And scraping the seabed surface layer by using a scraper, and lifting the seabed surface layer to a ship through a pipeline after the seabed surface layer is gradually accumulated to a shellfish collecting box. The device only scrapes 3-5cm of the seabed surface layer, and meanwhile, partial clam seedlings still remain at the bottom of the scraper, and the clams passing through the sea area are not completely sucked. The device effectively reduces the density of clams and achieves the purpose of reasonably protecting the substrate in an operation area.
Description
Technical Field
The utility model belongs to a fishing machine device, in particular to a clam seed density-adjusting device.
Background
The clams are one of four cultured shellfish in China, and the proper culture density is favorable for the quick growth of the clams. If the breeding density is too high, the clam seedlings compete with each other for bait, so that the nutrition is deficient, the physique is weak, the clam quality is poor, the selling price is low, the lean clam has poor resistance to external environment change, and the large-batch death is easily caused. Therefore, the excessively high culture density not only causes great economic benefit loss, but also poses potential threat to the ecological environment and is not beneficial to the stability of biological resources.
The existing clam fry density device is generally a drag pump suction device, and the working principle of the device is that a suction funnel is placed into the sea bottom, a suction port is directly opposite to and close to the sea bed, the suction force and the suction depth are large, all resources in the sea area are sucked when the device is used, the substrate in an operation area is seriously damaged, the living environment is influenced, and the sustainable utilization of fishery resources is not facilitated.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is to provide a clam fry density-thinning device, when implementing clam fry density-thinning, only scrape the seabed top layer, reach the purpose of reasonably protecting the bottom material of the operation area.
The technical scheme of the utility model as follows:
a clam fry density-thinning device is characterized by comprising a shellfish collecting box with an open lower side surface, wherein the rear end of the shellfish collecting box is provided with a scraping plate, and the front end of the shellfish collecting box is connected with a lifting pipeline; the shell collecting box is also connected with a traction frame.
Preferably, the side plate on the shellfish collecting box is provided with a water inlet.
Preferably, the inlet end of the lifting pipe is spaced from the scraper to avoid the lifting pipe contacting or being too far from the seabed in use.
Preferably, the scraper is provided with rake teeth.
The utility model has the advantages of:
firstly, the utility model discloses utilize the scraper blade to scrape and get seabed top layer, progressively promote to collecting behind the shellfish case to on the ship through the pipeline. The device only scrapes 3-5cm of the seabed surface layer, and meanwhile, partial clam seedlings still remain at the bottom of the scraper, and the clams passing through the sea area are not completely sucked. Experiments prove that when no seedling exists in the shellfish collecting box when the scraper stops moving, the inlet of the lifting pipeline is at a certain distance from the seabed, only seawater is lifted by the pipeline, and bottom sediment is not contained, so that the lifting pipeline does not directly act on the seabed, and the device effectively reduces the density of clams and simultaneously achieves the purpose of reasonably protecting the bottom of an operation area.
Secondly, the utility model discloses seted up the water inlet on the upper side board of collection shellfish case for adjust the proportion of collection shellfish incasement silt, sea water and clam seed, reduce the suction of lifting line to the seabed, further reduced the damage degree of lifting line to the operation district bottom material.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic side view of an embodiment of the present invention.
Fig. 3 is a schematic structural shape diagram of a scraper with rake teeth in the embodiment of the present invention.
Detailed Description
The invention is further described with reference to the following figures and examples.
As fig. 1 and 2, the utility model discloses an embodiment includes the open collection shellfish case 1 of downside, and the rear end of collection shellfish case 1 has scraper blade 6, and the front end fixedly connected with lifting pipe 2 of collection shellfish case 1, the front end of lifting pipe 2 have ring flange 3 for connect the first pipeline of connection. The embodiment of the utility model discloses a traction frame 4 that still includes and is connected with collection shellfish case 1. The lifting power of the lifting pipe 2 comes from the pump system on the vessel. The water inlet of the riser 2 is at a distance from the scraper 6 to avoid that the suction of the riser acts directly on the seabed.
The front end of the shell collecting box 1 is provided with a front side plate, and the left side and the right side of the shell collecting box 1 are respectively provided with a side plate 7.
In the preferred technical scheme, five water inlets 5 are formed in the upper side plate of the shellfish collecting box 1 and used for adjusting the proportion of silt, seawater and clam seedlings in the shellfish collecting box and reducing the suction force of a lifting pipeline to a seabed.
As shown in fig. 3, the scraper 6 is preferably provided with rake teeth 8.
The boat body sails in a sea area with large clam fry density, the device is dragged to move forwards through the lifting pipeline 2 and a rope connected with the traction frame 4, the scraper 6 moves forwards along the seabed under the action of the self gravity, silt on the surface of the seabed and the clam fries are scraped into the shellfish collecting box 1 and are mixed with seawater to be lifted to a boat through the lifting pipeline 2. Silt, the clam seedlings and seawater discharged by the lifting pipeline are pumped up on a ship to be sieved, the silt and the seawater return to the sea area, and the clam seedlings are bagged and recovered.
Claims (5)
1. A clam fry density-thinning device is characterized by comprising a shellfish collecting box (1) with an open lower side surface, wherein the rear end of the shellfish collecting box (1) is provided with a scraping plate (6), and the front end of the shellfish collecting box (1) is connected with a lifting pipeline (2); the shell collecting box (1) is also connected with a traction frame (4).
2. The clam fry density device of claim 1, wherein: the side plate on the shell collecting box (1) is provided with a water inlet (5).
3. The clam fry density device of claim 1 or 2, wherein: the inlet end of the pipeline (2) is spaced from the blade (6) to avoid the pipeline contacting the seabed or being too far from the seabed in use.
4. The clam fry density device of claim 1 or 2, wherein: the scraper (6) is provided with harrow teeth (8).
5. The clam fry density device of claim 3, wherein: the scraper (6) is provided with harrow teeth (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020151496.3U CN211671951U (en) | 2020-02-04 | 2020-02-04 | Clam seedling density-thinning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020151496.3U CN211671951U (en) | 2020-02-04 | 2020-02-04 | Clam seedling density-thinning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211671951U true CN211671951U (en) | 2020-10-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020151496.3U Active CN211671951U (en) | 2020-02-04 | 2020-02-04 | Clam seedling density-thinning device |
Country Status (1)
| Country | Link |
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| CN (1) | CN211671951U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115176737A (en) * | 2022-08-15 | 2022-10-14 | 中国水产科学研究院渔业机械仪器研究所 | Seedling arranging and finished product harvesting device and method for long-seedling rope shellfish culture raft frame |
-
2020
- 2020-02-04 CN CN202020151496.3U patent/CN211671951U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115176737A (en) * | 2022-08-15 | 2022-10-14 | 中国水产科学研究院渔业机械仪器研究所 | Seedling arranging and finished product harvesting device and method for long-seedling rope shellfish culture raft frame |
| CN115176737B (en) * | 2022-08-15 | 2023-09-26 | 中国水产科学研究院渔业机械仪器研究所 | Device and method for arranging fries and harvesting finished products of long-fry-rope shellfish culture raft frames |
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