NL2035153B1

NL2035153B1 - Chain-type seabed buried shellfish harvesting vessel

Info

Publication number: NL2035153B1
Application number: NL2035153A
Authority: NL
Inventors: Li Jianyu; Zhu Chencheng; Zhao Xinying; Zhang Bin
Original assignee: Fishery Machinery & Instrument Res Inst Cafs
Priority date: 2022-09-21
Filing date: 2023-06-22
Publication date: 2024-03-26
Also published as: CN115413632B; CN115413632A

Abstract

The present disclosure relates to a chain-type seabed buried shellﬁsh harvesting vessel, a front end and a rear end of a shellﬁsh collector are an outlet and an inlet 5 respectively, and the outlet is provided with a sealing plate capable of being opened and closed, the shellﬁsh collector is rotationally ﬁxed on a horizontal shaft of a rack, a pulse sprinkler is ﬁxed on the rack, a nozzle is inclined down, and an inclined angle may be regulated; a delivery device is obliquely arranged and includes a chain and a chain wheel, a hopper is ﬁxed on the chain, an upper edge of the hopper aims at the outlet of the 10 shellﬁsh collector, the hopper can overcome the blockage of the shellﬁsh collector when moving upwards along the chain, and the shellﬁsh collector is pushed to rotate around the shaft, a limiter is arranged on the rack.

Description

CHAIN-TYPE SEABED BURIED SHELLFISH HARVESTING VESSEL

TECHNICAL FIELD

[0001] The present disclosure relates to a shellfish harvesting vessel, in particular to a harvesting vessel for harvesting a buried shellfish located in an offshore seabed rather than an intertidal zone, belonging to the technical field of shellfish harvesting.

BACKGROUND

[0002] A device involving in harvesting the buried shellfish is divided into two using environments for an intertidal zone and a seabed. The buried shellfish harvesting for the seabed usually refers to the offshore area, which is a few hundred to a few kilometers from a shore (divided according to a beach slope), and in this using environment, the existing technology is as follows:

[0003] Chinese patent No. CN103461290A filed on December 25, 2013 discloses a shellfish harvesting machine, and the shellfish harvesting machine also absorbs plenty of water when sucking the shellfish to the vessel from the seabed by adopting a water- absorbing and shellfish-taking method, resulting in a greater energy consumption.

[0004] Chinese patent No. CN201360480Y filed on December 16, 2019 discloses an automatic harvesting vessel for a shellfish product, which is used for harvesting the seabed buried shellfish. The device digs the shellfish at the seabed by adopting a hopper, so as to exist a problem that the hopper is easily damaged when colliding with a seabed hard object; and at the same time, the counter-acting force received by the hopper will be delivered to a hopper chain during a digging process, so the hopper chain is unevenly stressed, easily causing the hopper chain to shape and unsmooth transmission.

[0005] Chinese patent No. CN106719492B discloses a double-vessel continuous operation type deep sea shellfish harvesting system and a harvesting method thereof, which can be used for harvesting the seabed buried shellfish. The device also absorbs plenty of water when sucking the shellfish to the vessel by adopting the water-absorbing and shellfish-taking method, resulting in a greater energy consumption; and meanwhile, a bottom trawl slides from the seabed and sweeps all creatures in its path into the net, causing a greater damage to the seabed ecology.

[0006] In conclusion, the existing harvesting device for the seabed buried shellfish has the following problems:

[0007] 1) The water-absorbing and shellfish-taking method is adopted in the whole process, resulting in a great energy consumption, “the whole process” means that the water is absorbed in the whole depth from the seabed to the sea surface, so the water consumption is great;

[0008] 2) The hopper is adopted for digging, causing that the hopper digging device is easily damaged, and the transmission of the hopper chain is easily unsmooth; and

[0009] 3) Due to destroying the seabed ecology, the bottom trawl is forbidden.

SUMMARY

[0010] The present disclosure aims at providing a chain-type seabed buried shellfish harvesting vessel, so that: 1) a person does not need to enter the sea; 2) the harvested shellfish will not carry plenty of water when entering a vessel; 3) a hopper is not used for digging; and 4) a bottom trawl is not adopted, thereby not destroying the seabed ecology

[0011] The present disclosure adopts the technical solution below:

[0012] A chain-type seabed buried shellfish harvesting vessel, including a harvesting device and a collection tray 8; the harvesting device includes a rack 1, a shellfish collector 4, a pulse sprinkler 3, a delivery device 5 and a hopper 6; a front end and a rear end of the shellfish collector 4 are an outlet and an inlet respectively, and the outlet is provided with a sealing plate capable of being opened and closed; the shellfish collector 4 is rotationally fixed on a horizontal shaft 40 of the rack 1; the pulse sprinkler 3 is fixed on the rack 1, a nozzle is inclined down, and an inclined angle may be regulated; the delivery device 5 is obliquely arranged and includes a chain and a chain wheel, the hopper 6 is fixed on the chain, an upper edge of the hopper 6 aims at the outlet of the shellfish collector 4, the hopper 6 can overcome the blockage of the shellfish collector 4 when moving upwards along the chain, and the shellfish collector 4 is pushed to rotate around the shaft 40; a limiter 7 that overturns and limits the blocked shellfish collector 4 is arranged on the rack 1; the collection tray 8 is arranged on the harvesting vessel and can move back and forth transversely; when the chopper 6 reaches a high level along the chain, the collection tray 8 moves below the hopper 6 transversely, a bottom of the hopper 6 is controllably opened, so that the collected shellfish falls into the collection tray 8; and the harvesting device is arranged on the harvesting vessel, and can be lifted to the sea by a crane on the harvesting vessel.

[0013] Preferably, a bottom of the rack is provided with a spring 2 extending downwards, while a front part is provided with a spring 2 extending forwards.

[0014] Preferably, when put into the sea, an upper end of the harvesting device is fixedly connected to the harvesting vessel.

[0015] Preferably, the shellfish collector 4 is permeable.

[0016] Preferably, a pressure sensor and an electromagnet are arranged at the sealing plate of the shellfish collector 4, the electromagnet controls the sealing plate to be opened and closed, the pressure, collected by the sealing plate, of the shellfish 1s monitored by the pressure sensor, and the electromagnet opens the sealing plate according to setting pressure feedback.

[0017] Preferably, a stock supporting plate capable of being opened is arranged at the bottom of the hopper 6, and the hopper 6 is permeable.

[0018] Further, the pressure sensor connected to an alarm circuit is arranged on the spring 2; and when the spring 2 collides with a hard object barrier, the spring plays a damping role, and at the same time, when the pressure sensor monitors that a pressure value is greater than a setting threshold value, the alarm circuit is connected.

[0019] The present disclosure has the following beneficial effects:

[0020] 1) A person does not need to enter the sea for operation;

[0021] 2) The shellfish is avoided to carry plenty of water to lift to the sea surface from the seabed, thereby reducing the power consumption;

[0022] 3) The hopper is not used for digging, so that the hopper is not easy to be damaged, and conductive to the smooth rotation of the delivery device;

[0023] 4) The adverse effect caused by the bottom trawl is avoided; and

[0024] 5) The spring first collides with the seabed barrier compared with other equipment, so as to protect other devices; and the elasticity of the spring also ensures that the harvesting device itself is not easily damaged by the barrier.

BRIEF DESCRIPTION OF THE DRAWINGS

[0025] FIG. 1 is a solid diagram of a harvesting device of a chain-type seabed buried shellfish harvesting vessel in the present disclosure;

[0026] FIG. 2 is a schematic diagram of a state I when a chain-type seabed buried shellfish harvesting vessel in the present disclosure is working (when a collection tray does not stretch out, and a hopper does not move up);

[0027] FIG. 3 is a schematic diagram of a state II when a chain-type seabed buried shellfish harvesting vessel in the present disclosure is working (when a collection tray stretches out, and a hopper moves up); and

[0028] FIG. 4 is a schematic diagram of a shellfish collector.

[0029] In the drawing, 1. Rack, 2. Spring, 3. Pulse sprinkler, 4. Shellfish collector, 5.

Delivery device, 6. Hopper, 7. Limiter, 8. Collection tray, 9. vessel.

DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The present disclosure is further described below in combination with drawings and specific embodiments.

[0031] Referring to FIG. 1 to FIG. 4, a chain-type seabed buried shellfish harvesting vessel, including a harvesting device and a collection tray 8; the harvesting device includes a rack 1, a shellfish collector 4, a pulse sprinkler 3, a delivery device 5 and a hopper 6; a front end and a rear end of the shellfish collector 4 are an outlet and an inlet respectively, and the outlet is provided with a sealing plate capable of being opened and closed; the shellfish collector 4 is rotationally fixed on a horizontal shaft 40 of the rack 1; the pulse sprinkler 3 is fixed on the rack 1, a nozzle is inclined down, and an inclined angle may be regulated; the delivery device 5 is obliquely arranged and includes a chain and a chain wheel, the hopper 6 is fixed on the chain, an upper edge of the hopper 6 aims at the outlet of the shellfish collector 4, the hopper 6 can overcome the blockage of the shellfish collector 4 when moving upwards along the chain, and the shellfish collector 4 is pushed to rotate around the shaft 40; a limiter 7 that overturns and limits the blocked shellfish collector 4 is arranged on the rack 1; the collection tray 8 is arranged on the harvesting vessel and can move back and forth transversely; when the hopper 6 reaches ahigh level along the chain, the collection tray 8 moves below the hopper 6 transversely, a bottom of the hopper 6 is controllably opened, so that the collected shellfish falls into the collection tray 8; and the harvesting device is arranged on the harvesting vessel, and can be lifted to the sea by a crane on the harvesting vessel.

[0032] In this embodiment, referring to FIG. 1 to FIG. 3, a bottom of the rack is provided with a spring 2 extending downwards, while a front part is provided with a spring 2 extending forwards.

[0033] In this embodiment, referring to FIG. 2 to FIG. 3, when put into the sea, an upper end of the harvesting device is fixedly connected to the harvesting vessel.

[0034] In this embodiment, the shellfish collector 4 is permeable.

[0035] In this embodiment, a pressure sensor and an electromagnet are arranged at the sealing plate of the shellfish collector 4, the electromagnet controls the sealing plate to be opened and closed, the pressure, collected by the sealing plate, of the shellfish is 5 monitored by the pressure sensor, and the electromagnet opens the sealing plate according to setting pressure feedback. A position of the sealing plate is as shown in FIG. 4,

[0036] In this embodiment, a stock supporting plate capable of being opened is arranged at the bottom of the hopper 6, and the hopper 6 is permeable. The drawing shows in detail the stock supporting plate through which the bottom of the hopper may be opened, and belonging to the existing technology, this embodiment does not describe it in detail.

[0037] In this embodiment, the pressure sensor connected to an alarm circuit is arranged on the spring 2; and when the spring 2 collides with a hard object barrier, the spring plays a damping role, and at the same time, when the pressure sensor monitors that a pressure value is greater than a setting threshold value, the alarm circuit is connected, so as to release an alarm signal.

[0038] During operation, the harvesting device is put into the sea by a marine crane, an upper end of the rack of the harvesting device is connected to a vessel hull, and then the following steps are performed:

[0039] S1: opening the pulse sprinkler 3, a sprayed waterspout washing away seabed sediment, flushing the shellfish at the same time, and the flushed shellfish falling into the shellfish collector 4 under the action of waterflow and partial waterspout ;

[0040] S2: triggering the pressure sensor arranged inside the shellfish collector 4 when the shellfish in the shellfish collector 4 being accumulated to a certain weight, the sensor sending out a signal, the electromagnet being electrified and magnetized, the sealing plate at a tail part of the shellfish collector 4 being opened, the shellfish falling into the hopper 6, then the electromagnet losing electricity and demagnetizing, the sealing plate being absorbed back again, and a tail part of the shellfish collector being closed; and

[0041] S3: triggering the pressure sensor arranged inside the hopper 6 after the hopper 6 collecting the shellfish, the sensor sending out a signal to start the delivery device 5, and the hopper 6 ascending; after the hopper 6 colliding with the shellfish collector 4, the shellfish collector 4 rotating around the shaft 40 without blocking the ascending of the hopper 6; after the hopper 6 passing through the shellfish collector 4, the shellfish collector 4 falling around the shaft 40 under itself gravity and being limited by the limiter 7; after the hopper 6 ascending to the top of the rack, the collection tray 8 stretching to the lower part of the hopper 6 from the vessel hull 9, after the sensor on the hopper 6 receiving the signal sent by the collection tray 8, the electromagnet in the hopper 6 being electrified and magnetized, so that the bottom of the hopper 6 being opened, the shellfish falling in the collection tray 8, the hopper 6 releasing the shellfish into the vessel, and the collection try 8 recovering the vessel hull 9; and the delivery device 5 delivering the hopper to the lower part of the shellfish collector 4, after reaching a preset duration, the delivery device 5 stopping running, and the hopper 6 preparing for the next transportation operation. When the spring 2 colliding with a hard object barrier, the spring playing a damping role, and at the same time, when the pressure value being greater than a setting threshold value, the alarm circuit being connected, so as to send out an alarm signal.

[0042] The above is the preferred embodiment of the present disclosure, those of ordinary skill in the art may make various changes or improvements on this basis, and these changes or improvements shall belong to the scope requested by the present disclosure without departing from the overall concept of the present disclosure.

Claims

Conclusions l. Seabed buried shellfish harvesting vessel of the chain type, comprising: a harvesting device and a collection container (8); wherein, the harvesting device comprises a rack (1), a shellfish collector (4), a pulse sprayer (3), a delivery device (5) and a hopper (6); a front end and a rear end of the shellfish collector (4) are an outlet and an inlet, respectively, and the outlet is provided with a closing plate that can be opened and closed; the shellfish collector (4) is rotatably mounted on a horizontal shaft (40) of the rack (1); the pulse sprayer (3) is mounted on the rack (1), a nozzle is inclined downwards and an angle of inclination can be regulated, the delivery device (5) is arranged at an angle and includes a chain and a sprocket, the hopper (6) is attached to the chain attached, an upper edge of the hopper (6) faces the outlet of the shellfish collector (4), the hopper (6) is able to overcome the blockage of the shellfish collector (4) as it moves up the chain, and the shellfish collector (4) is pushed to rotate around the shaft (40); a limiter (7) that tilts and limits the blocked shellfish collector (4) is arranged on the rack (1); the collecting container (8) is arranged on the harvesting vessel and moves transversely back and forth; when the hopper (6) reaches a high level along the chain, the collecting tray (8) moves transversely under the hopper (6), a bottom of the hopper (6) is opened in a controlled manner, so that the collected shellfish enter the collecting tray (8). ) traps; and the harvesting device is arranged on the harvesting vessel and lifted to sea by a crane on the harvesting vessel.

A chain-type seabed buried shellfish harvesting vessel according to claim 1, wherein a bottom of the rack is provided with a spring (2) extending downwards, while a forward portion is provided with a spring (2) extending forward.

The chain-type seabed buried shellfish harvesting vessel of claim 1, wherein when placed in the sea, an upper end of the harvesting device is rigidly connected to the harvesting vessel.

A chain-type seabed buried shellfish harvesting vessel according to claim 1, wherein the shellfish collector (4) is permeable.

The chain-type seabed buried shellfish harvesting vessel according to claim 1, wherein a pressure sensor and an electromagnet are arranged on the sealing plate of the shellfish collector (4), the electromagnet controls the sealing plate to be opened and closed, the pressure collected by the sealing plate of the crustaceans is controlled by the pressure sensor and the electromagnet opens the sealing plate according to the set pressure feedback.

The chain-type seabed buried shellfish harvesting vessel of claim 1, wherein an openable stock support plate is arranged on the bottom of the hopper (6), and the hopper (6) is permeable.

The chain-type seabed buried shellfish harvesting vessel according to claim 2, wherein a pressure sensor connected to an alarm circuit is arranged on the spring (2); and when the spring (2) collides with a hard object barrier, the spring plays a damping role, and at the same time, when the pressure sensor monitors that a pressure value is greater than a set threshold value, the alarm circuit is turned on.