Automatic lifting type laver culture device and use method thereof

文档序号:1358761 发布日期:2020-07-28 浏览:18次 中文

阅读说明:本技术 一种自动升降式紫菜养殖装置及其使用方法 (Automatic lifting type laver culture device and use method thereof ) 是由 汪文俊 陈四清 鲁晓萍 梁洲瑞 刘福利 孙修涛 张朋艳 于 2020-05-19 设计创作,主要内容包括:本发明公开了一种自动升降式紫菜养殖装置及其使用方法,配设有电控系统,主体为两层中空管形成的长方体形状的框架,框架上层设置有紫菜养殖网;下层管件所用材料的密度大于海水密度,上层管件所用材料的密度小于海水密度,二者均两端封口,且二者之间设有起到支撑作用的支柱;下层管件靠近中间部位设有通水管和通气管,固定于上层管件的上面,分别与双向水泵、通气阀相连接;电控制系统一方面连接通气阀和水泵,另一方面通过无线网络与岸上的控制系统连接;电控制系统配备防水外壳;框架侧面可以打开以便船只通行驶入养殖框架内收菜。本发明可以根据环境变化和藻体生产需求控制晒网程度以及生长水层位置,以培养出高品质的成品紫菜。(The invention discloses an automatic lifting laver culture device and a use method thereof, and the automatic lifting laver culture device is provided with an electric control system, wherein the main body of the automatic lifting laver culture device is a cuboid-shaped frame formed by two layers of hollow pipes, and a laver culture net is arranged on the upper layer of the frame; the density of the material used by the lower layer pipe fitting is greater than that of the seawater, the density of the material used by the upper layer pipe fitting is less than that of the seawater, both ends of the lower layer pipe fitting and the upper layer pipe fitting are sealed, and a supporting column for supporting is arranged between the lower layer pipe fitting and the upper layer pipe fitting; the lower layer pipe fitting is provided with a water pipe and a vent pipe near the middle part, is fixed on the upper layer pipe fitting and is respectively connected with a two-way water pump and a vent valve; the electric control system is connected with the breather valve and the water pump on one hand, and is connected with a control system on the shore through a wireless network on the other hand; the electric control system is provided with a waterproof housing; the side surface of the frame can be opened so that the ship can run into the cultivation frame to collect dishes. The invention can control the net sunning degree and the position of a growing water layer according to the environmental change and the algae production requirement so as to culture high-quality finished laver.)

1. The utility model provides an automatic over-and-under type laver breeding device, sets electrical system (7), and the main part is the frame of the cuboid shape that two-layer hollow tube formed, and the frame upper strata is provided with laver breeding net (9), its characterized in that:

the frame, including lower floor's frame, upper frame, pillar: the lower layer frame comprises two lower layer pipe fittings (1) which are parallel to each other and arranged transversely; the upper layer frame comprises two upper layer pipe fittings (2) which are parallel to each other and are transversely arranged, a plurality of brackets (8) which are parallel to each other and are transversely arranged are arranged between the two upper layer pipe fittings, and the brackets are perpendicular to the upper layer pipe fittings; one upper-layer pipe fitting is positioned right above one lower-layer pipe fitting and is connected with the lower-layer pipe fitting through a strut (3), and the other upper-layer pipe fitting is positioned right above the other lower-layer pipe fitting and is also connected with the lower-layer pipe fitting through the strut (3); the supporting columns are arranged in parallel and vertically, and support the lower-layer frame and the upper-layer frame to form a cuboid-shaped frame; the lower-layer pipe fitting and the upper-layer pipe fitting are completely the same in shape and length and are hollow pipes with hollow interiors and sealed two ends, and the diameter of the lower-layer pipe fitting is larger than or equal to that of the upper-layer pipe fitting; the laver culture net (9) is arranged between the brackets (8);

the middle parts of the two lower-layer pipe fittings are communicated with two hollow pipes, one hollow pipe is a water pipe (5), and the other hollow pipe is a vent pipe (6) which are respectively used for water inlet and outlet and ventilation; the wall of the water pipe (5) is fixed on the wall of the upper-layer pipe fitting, and the tail end of the water pipe is connected with the bidirectional water pump; the pipe wall of the vent pipe (6) is fixed on the pipe wall of the upper-layer pipe fitting, and the tail end of the vent pipe is connected with a vent valve; the two-way water pump and the vent valve are communicated with the electric control system (7), and the electric control system controls the opening and the direction of the two-way water pump and controls the closing of the vent valve at the same time.

2. The automatic elevation type laver culturing device according to claim 1, wherein: the electric control system can be connected with a control system located at the shore through a wireless network, and managers can issue control commands on the shore and transmit the control commands to the electric control system on the sea through the wireless network so as to control the two-way water pump and the vent valve to work.

3. The automatic elevation type laver culturing device according to claim 1, wherein: the electric control system is externally provided with a waterproof shell to avoid seawater erosion.

4. The automatic elevation type laver culturing device according to claim 1, wherein: the support column (3) is connected with the upper layer pipe fitting or the lower layer pipe fitting through a connecting piece (4).

5. The automatic elevation type laver culturing device according to claim 1, wherein: the connecting piece (4) is preferably a connecting piece with a clamping interface on the top surface or the bottom surface and connecting interfaces on the two side surfaces; the joint mouth can block on upper pipe fitting or lower floor's pipe fitting, links up the mouth and can insert the support and link.

6. The automatic elevation type laver culturing device according to claim 1, wherein: the frame, the side all is provided with a side support frame about, every side support frame includes two upper stay tubes, two lower stay tubes, wherein: one ends of the two upper supporting tubes are respectively connected with the tail ends of the two upper-layer pipe fittings at the same side through movable connecting structures (10), and the other ends of the two upper supporting tubes are connected together through a connecting device (11); one ends of the two lower supporting pipes are respectively connected with the tail ends of the two lower pipe fittings at the same side through movable connecting structures (10), and the other ends of the two lower supporting pipes are connected together through connecting devices (11); and when the connecting device is opened, the two upper supporting tubes and the two lower supporting tubes can be opened outwards.

7. The automatic elevation type laver culturing device according to claim 1, wherein: the movable connecting structure (10) is a hinge or a movable two-way pipe; the connecting device (11) is a rope or a buckle or a hook; the closed connecting device has the advantages that the movable connecting structure is 90 degrees to stabilize the rectangular frame, the movable connecting structure is 180 degrees when the connecting device is opened, and accordingly the ship can pass and drive in the frame to collect dishes.

8. The automatic elevation type laver culturing device according to claim 1, wherein: the density of the lower-layer pipe fitting (1) is greater than that of seawater, the length is 10-120m, and the inner diameter is 8-20 cm; the upper-layer pipe fitting (2) is made of materials with the density less than that of seawater, the length of 10-120m and the inner diameter of 5-20 cm.

9. The automatic elevation type laver culturing device according to claim 1, wherein: the height of the support posts (3) is 40-100cm, the inner diameter is 5-20cm, and the distance between the support posts is 1-3 m; the length of the bracket (8) is 2.0-4.2m, the inner diameter is 3-6cm, and the distance between the brackets is 1-3 m.

10. A method for using the automatic lifting type laver culturing device according to any one of claims 1 to 9, which comprises the following steps:

(1) rising: tying two long edges of the laver culture net on two adjacent brackets, and respectively tying two short edges on two upper-layer pipe fittings; according to the growth condition, climate and sea condition of the laver algae, managers issue control commands on the shore, the control commands are transmitted to an offshore electric control system through a wireless network, a vent valve is controlled to be opened, air enters lower-layer pipe fittings through a vent pipe, a bidirectional water pump is controlled to be opened at the same time, seawater in the lower-layer pipe fittings is pumped into the sea through a water pipe, when the water-leaving distance of a laver culture net meets the requirement, the bidirectional water pump is stopped, and the vent valve is closed; the distance between the laver culture net and the water surface is the rising height, the proper height is adjusted according to the length of the algae, and the laver grows to 15-20cm and then is collected; at this time, the laver culturing net is exposed to the air to be sunned;

(2) and (3) descending: after the net airing time meets the requirement, a manager issues a control command on the shore, the control command is transmitted to an offshore electric control system through a wireless network, a bidirectional water pump is started, the water inlet and outlet directions of the water pump are adjusted, at the moment, seawater is injected into a lower-layer pipe fitting from the sea by the water pump through a water pipe, a vent valve is controlled to be opened, air in the lower-layer pipe fitting is discharged through a vent pipe, and after an upper-layer pipe fitting falls to the water surface, the bidirectional water pump is stopped, and the vent valve is closed; at this time, the laver cultivation net attached to the upper pipe is immersed in seawater and grows normally; when the light is too strong and the transparency is too high, the living water layer of the laver net is properly reduced by increasing the water storage amount in the lower layer pipe fitting, so that the adverse effect of long-time high light stress on the growth and the quality of the algae is avoided.

Technical Field

The invention relates to a laver culture device, in particular to an automatic lifting type laver culture device and a use method thereof, and belongs to the technical field of laver culture.

Background

The laver is one of the most popular marine vegetables, and is a large economic seaweed which has the largest culture area and the widest culture range in China at present. One thousand years ago, the coastal residents in China began to eat the laver and consciously proliferate the laver by using a reef cleaning mode, namely the earliest 'vegetable jar type cultivation method'. The method is used for the fifth and sixty years of the last century, and even certain islands in the Fujian coast still remain the ancient way; however, the method has poor controllability, the seedling source completely depends on the nature, and the laver yield and the popularization sea area are very limited. The modern laver cultivation technology is established in the sixties of the last century and mainly comprises three cultivation modes of a support column type cultivation mode, a semi-floating raft type cultivation mode and a full-floating raft type cultivation mode, so that the laver cultivation industry is rapidly developed. The 'support column type cultivation' is a mode that a wood pile or a bamboo pile is arranged as a support column in an intertidal zone or a sea area with proper water depth, and a laver net curtain is hung on the support column for cultivation, wherein the height of the net curtain can be randomly adjusted according to tide and net sunning requirements; the semi-floating raft type is a cultivation mode that the whole raft frame floats on the water surface when the tide rises, and sinks and stands on the mud flat when the tide falls; the two modes are that the rise and fall of tides are fully utilized, the laver net curtain is periodically exposed and dried to kill the diseases of the impurity algae, the healthy growth of the laver is ensured, and the method is the mainstream laver cultivation mode in China. However, both "semi-floating raft" and "column" cultivation methods are severely limited by tides and water depth. In recent years, the coastal areas, shallow seas and beaches suitable for cultivation are over developed and utilized, and the laver rot in the main production area is more serious due to the warming of climate and environmental change, which generally shows that the coastal cultivation area is more serious than the offshore cultivation area. Therefore, the development of laver cultivation to offshore deep water areas is a necessary way for sustainable development of laver industry in the future. The 'full floating raft type' cultivation mode can be implemented in a sea area which is far off the shore and deep in sea water, but the net curtain cannot be exposed, and the hybrid algae are easy to grow, so that the quality and the yield of the seedlings and the vegetables are influenced. Although the problem of the proliferation of miscellaneous algae such as enteromorpha and diatom can be solved to a certain extent by adopting a refrigeration net, a chemical killing mode and the like, the labor and material resources are consumed, the cost is increased, and the chemical treatment possibly causes negative influence on the environment.

In order to promote the development of laver cultivation to offshore deep water areas, new cultivation facilities and technologies are continuously changed. The invention patent CN103493722A discloses a device for dry dew of laver full-floating artificial cultivation and a using method thereof, the invention mainly adopts a trapezoidal float which is provided with a groove, when a net is aired, a bamboo pole supporting a laver curtain is turned into the groove of the trapezoidal float, the invention improves the defect that the laver curtain can not be dry dew in the traditional full-floating raft type cultivation technology, but the method of the invention needs to place the cultivation net curtains on the trapezoidal float one by one, which consumes manpower and is difficult to popularize in large area. The invention patent CN104488691A discloses a device for cultivating laver in deep water area and a using method thereof, which can solve the technical problem of laver screen, but the whole row of net curtains need to be turned over manually to realize the net drying, and because the whole net curtain is very heavy after laver algae grows up, the whole net curtain is very laborious to turn over manually and has great potential safety hazard.

Disclosure of Invention

The invention aims to solve the technical problem of the prior art, and provides an automatic lifting type laver culture device and a using method thereof, which solve the technical problem of screen mesh and water layer adjustment of laver in a deep sea culture process, can realize easy screen mesh, and can control the mesh drying degree and the position of a growing water layer according to environmental change and algae production requirements so as to culture high-quality finished laver.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides an automatic over-and-under type laver breeding device, sets electrical system, and the main part is the frame of the cuboid shape that two-layer cavity pipe formed, and the frame upper strata is provided with laver breeding net, its characterized in that:

the frame, including lower floor's frame, upper frame, pillar: the lower frame comprises two lower pipe fittings which are parallel to each other and arranged transversely; the upper layer frame comprises two upper layer pipe fittings which are parallel to each other and are transversely arranged, a plurality of brackets which are parallel to each other and are transversely arranged are arranged between the two upper layer pipe fittings, and the brackets are perpendicular to the upper layer pipe fittings; one upper-layer pipe fitting is positioned right above one lower-layer pipe fitting and is connected with the lower-layer pipe fitting through a strut, and the other upper-layer pipe fitting is positioned right above the other lower-layer pipe fitting and is also connected with the lower-layer pipe fitting through a strut; the supporting columns are arranged in parallel and vertically, and support the lower-layer frame and the upper-layer frame to form a cuboid-shaped frame; the lower-layer pipe fitting and the upper-layer pipe fitting are completely the same in shape and length and are hollow pipes with hollow interiors and sealed two ends, and the diameter of the lower-layer pipe fitting is larger than or equal to that of the upper-layer pipe fitting; the laver culture net is arranged between the brackets;

the middle parts of the two lower-layer pipe fittings are communicated with two hollow pipes, one hollow pipe is a water pipe, and the other hollow pipe is a vent pipe and is respectively used for water inlet and outlet and ventilation; the pipe wall of the water pipe is fixed on the pipe wall of the upper-layer pipe fitting, and the tail end of the water pipe is connected with the bidirectional water pump; the pipe wall of the vent pipe is fixed on the pipe wall of the upper-layer pipe fitting, and the tail end of the vent pipe is connected with the vent valve; the two-way water pump and the vent valve are communicated with the electric control system, and the electric control system controls the opening and the direction of the two-way water pump and controls the closing of the vent valve at the same time.

In the technical scheme, the electric control system can be connected with a control system located at the shore through a wireless network, and a manager issues a control command on the shore and transmits the control command to the electric control system on the sea through the wireless network so as to control the two-way water pump and the vent valve to work.

In the technical scheme, the electric control system is externally provided with the waterproof shell, so that seawater erosion is avoided.

In the technical scheme, the support column is connected with the upper-layer pipe fitting or the lower-layer pipe fitting through the connecting piece.

In the above technical solution, the connecting member is preferably a connecting member having a clamping interface on the top surface or the bottom surface and connecting interfaces on the two side surfaces; the joint mouth can block on upper pipe fitting or lower floor's pipe fitting, links up the mouth and can insert the support and link.

Among the above-mentioned technical scheme, the frame, the side all is provided with a side support frame about, every side support frame includes two upper stay tubes, two lower stay tubes, wherein: one ends of the two upper supporting tubes are respectively connected with the tail ends of the two upper-layer pipe fittings at the same side through movable connecting structures, and the other ends of the two upper supporting tubes are connected together through a connecting device; one ends of the two lower supporting pipes are respectively connected with the tail ends of the two lower-layer pipe fittings at the same side through movable connecting structures, and the other ends of the two lower supporting pipes are connected together through a connecting device; and when the connecting device is opened, the two upper supporting tubes and the two lower supporting tubes can be opened outwards.

In the above technical solution, the movable connecting structure is a hinge or a movable two-way pipe; the connecting device is a rope or a buckle or a hook; the closed connecting device has the advantages that the movable connecting structure is 90 degrees to stabilize the rectangular frame, the movable connecting structure is 180 degrees when the connecting device is opened, and accordingly the ship can pass and drive in the frame to collect dishes.

In the technical scheme, the density of the lower-layer pipe fitting is greater than that of seawater, and the lower-layer pipe fitting is preferably a glass steel pipe or a plastic pipe with the density greater than that of seawater; the high-density plastic pipe is preferably a PTFE pipe, a PPS pipe or the like.

In the technical scheme, the length of the lower-layer pipe fitting is preferably 10-120m, and the inner diameter of the lower-layer pipe fitting is 8-20 cm.

In the above technical scheme, the density of the upper layer pipe fitting is less than the seawater density, and the upper layer pipe fitting is preferably any one of common high-strength medium-low density plastics, and is further preferably a PE plastic pipe.

In the technical scheme, the length of the upper-layer pipe fitting is preferably 10-120m, and the inner diameter of the upper-layer pipe fitting is 5-20 cm.

In the above technical solution, the pillar is a plastic pipe with a hollow or solid interior, and more preferably a PE plastic pipe with a hollow interior.

In the technical scheme, the height of the support is 40-100cm, and the inner diameter of the support is 5-20 cm.

In the technical scheme, the distance between the pillars is 1-3 m.

In the above technical solution, the support is a plastic pipe with a hollow interior, preferably any one of common high-strength medium-low density plastics, and more preferably a PE plastic pipe.

In the technical scheme, the length of the bracket is 2.0-4.2m, and the inner diameter of the bracket is 3-6 cm.

In the technical scheme, the distance between the brackets is 1-3 m.

The use principle of the device is as follows: the rising and the falling of the whole device are controlled by adjusting the water quantity in the lower layer pipe fitting, so that the laver is sunned on the net, the growth of the water-sticking surface is realized, the water layer is adjusted, and the like.

The use method of the device comprises the following steps:

(1) rising: tying two long edges of the laver culture net on two adjacent brackets, and respectively tying two short edges on two upper-layer pipe fittings; according to the growth condition, climate and sea condition of the laver algae, managers issue control commands on the shore, the control commands are transmitted to an offshore electric control system through a wireless network, a vent valve is controlled to be opened, air enters lower-layer pipe fittings through a vent pipe, a bidirectional water pump is controlled to be opened at the same time, seawater in the lower-layer pipe fittings is pumped into the sea through a water pipe, when the water-leaving distance of a laver culture net meets the requirement, the bidirectional water pump is stopped, and the vent valve is closed; the distance between the laver culture net and the water surface is the rising height, the proper height is adjusted according to the length of the algae, and the laver generally grows to 15-20cm and is collected; at this time, the laver culturing net is exposed to the air to be sunned;

(2) and (3) descending: after the net airing time meets the requirement, a manager issues a control command on the shore, the control command is transmitted to an offshore electric control system through a wireless network, a bidirectional water pump is started, the water inlet and outlet directions of the water pump are adjusted, at the moment, seawater is injected into a lower-layer pipe fitting from the sea by the water pump through a water pipe, a vent valve is controlled to be opened, air in the lower-layer pipe fitting is discharged through a vent pipe, and after an upper-layer pipe fitting falls to the water surface, the bidirectional water pump is stopped, and the vent valve is closed; at this time, the laver cultivation net attached to the upper pipe is immersed in seawater (seawater surface) and grows normally; when the light is too strong and the transparency is too high, the living water layer of the laver net is properly reduced by increasing the water storage amount in the lower layer pipe fitting, so that the adverse effect of long-time high light stress on the growth and the quality of the algae is avoided.

In the technical scheme, the water-leaving distance and the net drying time of the laver culture net are carried out according to the conventional requirements in the field.

Compared with the prior art, the invention has the advantages that:

(1) compared with the traditional full floating raft type, the laver net sunning link is added. The frame adopts two-layer structure, and the laver net is put on the upper strata, realizes shining the net through the lift of frame, reduces the mud that floats miscellaneous algae interference and the incidence of disease.

(2) The traditional semi-floating raft culture mode is only suitable for tidal flats with large tidal ranges, the rod-inserting type culture mode is only suitable for shallow water areas with the water depth of tens of meters due to the limitation of the heights of the struts such as bamboo poles, and the like, and the invention can be suitable for sea areas with the water depth of tens of meters.

(3) The laver net curtain can be used for drying the laver net, breeding of miscellaneous algae is reduced, spraying of medicines is not needed, the laver net curtain is green and safe, and the position of the laver net curtain on a water layer can be adjusted to prevent laver from being stressed by high light.

(4) The floating or lower layer of the culture raft frame is controlled by adjusting the water content in the lower layer pipeline by adopting a bidirectional water pump, and the whole raft frame does not need to be lifted or turned over.

(5) An electric control system is added to control the on-off of the water pump and the vent valve and the pumping direction of the bidirectional water pump, and the automatic control is really realized by connecting the wireless network with a shore base.

In combination with the above, the invention can realize easy screen, and can control the net drying degree and the position of the growing water layer according to the environmental change and the algae production requirement so as to cultivate high-quality finished laver.

Drawings

FIG. 1 is a schematic view of the overall structure of an automatic lifting type laver culturing device according to the present invention;

FIG. 2 is a top view of the automatic elevation type laver culturing apparatus according to the present invention;

wherein: 1 is lower floor's pipe fitting, 2 is upper strata pipe fitting, 3 is the pillar, 4 is the union piece, 5 is the water service pipe, 6 is the breather pipe, 7 is electrical system, 8 is the support, 9 is laver culture net, 10 is connection structure, 11 is connecting device.

Detailed Description

The following detailed description of the embodiments of the present invention is provided, but the present invention is not limited to the following descriptions:

an automatic lifting laver culture device is provided with an electric control system 7, the main body of the device is a cuboid-shaped frame formed by two layers of hollow pipes, a laver culture net 9 is arranged on the upper layer of the frame, and the device is characterized in that as shown in figures 1-2:

the frame, including lower floor's frame, upper frame, pillar: the lower frame comprises two lower pipe fittings 1 which are parallel to each other and are transversely arranged; the upper layer frame comprises two upper layer pipe fittings 2 which are parallel to each other and are transversely arranged, a plurality of brackets (8) which are parallel to each other and are transversely arranged are arranged between the two upper layer pipe fittings, and the brackets are perpendicular to the upper layer pipe fittings; one upper pipe fitting is positioned right above one lower pipe fitting and is connected with the lower pipe fitting through a strut 3, and the other upper pipe fitting is positioned right above the other lower pipe fitting and is also connected with the lower pipe fitting through a strut; the supporting columns are arranged in parallel and vertically, and support the lower-layer frame and the upper-layer frame to form a cuboid-shaped frame; the lower-layer pipe fitting and the upper-layer pipe fitting are completely the same in shape and length and are hollow pipes with hollow interiors and sealed two ends, and the diameter of the lower-layer pipe fitting is larger than or equal to that of the upper-layer pipe fitting; the laver culture net 9 is arranged between the brackets 8;

the middle parts of the two lower-layer pipe fittings are communicated with two hollow pipes, one hollow pipe is a water pipe 5, and the other hollow pipe is a vent pipe 6 which are respectively used for water inlet and outlet and ventilation; the pipe wall of the water pipe is fixed on the pipe wall of the upper-layer pipe fitting, and the tail end of the water pipe is connected with the bidirectional water pump; the pipe wall of the vent pipe is fixed on the pipe wall of the upper-layer pipe fitting, and the tail end of the vent pipe is connected with the vent valve; the two-way water pump and the vent valve are communicated with the electric control system 7, and the electric control system controls the opening and the direction of the two-way water pump and controls the closing of the vent valve at the same time.

In the technical scheme, the electric control system can be connected with a control system located at the shore through a wireless network, and a manager issues a control command on the shore and transmits the control command to the electric control system on the sea through the wireless network so as to control the two-way water pump and the vent valve to work.

In the technical scheme, the electric control system is externally provided with the waterproof shell, so that seawater erosion is avoided.

In the technical scheme, the strut 3 is connected with the upper-layer pipe fitting or the lower-layer pipe fitting through the connecting piece 4.

In the above technical solution, the connecting member is preferably a connecting member having a clamping interface on the top surface or the bottom surface and connecting interfaces on the two side surfaces; the joint mouth can block on upper pipe fitting or lower floor's pipe fitting, links up the mouth and can insert the support and link.

Among the above-mentioned technical scheme, the frame, the side all is provided with a side support frame about, every side support frame includes two upper stay tubes, two lower stay tubes, wherein: one end of each upper supporting pipe is connected with the tail end of the same side of each upper pipe through a movable connecting structure 10, and the other ends of the two upper supporting pipes are connected together through a connecting device 11; one ends of the two lower supporting pipes are respectively connected with the tail ends of the two lower-layer pipe fittings at the same side through movable connecting structures, and the other ends of the two lower supporting pipes are connected together through a connecting device; and when the connecting device is opened, the two upper supporting tubes and the two lower supporting tubes can be opened outwards.

In the above technical solution, the movable connecting structure 10 is a hinge or a movable two-way pipe; the connecting device 11 is a rope or a buckle or a hook; the closed connecting device has the advantages that the movable connecting structure is 90 degrees to stabilize the rectangular frame, the movable connecting structure is 180 degrees when the connecting device is opened, and accordingly the ship can pass and drive in the frame to collect dishes.

In the technical scheme, the density of the lower-layer pipe fitting 1 is greater than that of seawater, and is preferably a glass steel pipe or a plastic pipe with density greater than that of seawater; the high-density plastic pipe is preferably a PTFE pipe, a PPS pipe or the like.

In the technical scheme, the length of the lower-layer pipe fitting 1 is preferably 10-120m, and the inner diameter is 8-20 cm.

In the above technical solution, the density of the material of the upper layer pipe fitting 2 is less than the density of seawater, and is preferably any one of common high-strength middle-low density plastics, and is further preferably a PE plastic pipe.

In the technical scheme, the length of the upper-layer pipe fitting 2 is preferably 10-120m, and the inner diameter is 5-20 cm.

In the above technical solution, the pillar 3 is a plastic pipe with a hollow or solid interior, and more preferably a PE plastic pipe with a hollow interior.

In the technical scheme, the height of the support column 3 is 40-100cm, and the inner diameter is 5-20 cm.

In the above technical solution, the distance between the pillars 3 is 1-3 m.

In the above technical solution, the support 8 is a plastic pipe with a hollow interior, preferably any one of common high-strength medium-low density plastics, and more preferably a PE plastic pipe.

In the technical scheme, the length of the bracket 8 is 2.0-4.2m, and the inner diameter is 3-6 cm.

In the above technical solution, the distance between the brackets 8 is 1-3 m.

The use principle of the device is as follows: the rising and the falling of the whole device are controlled by adjusting the water quantity in the lower layer pipe fitting, so that the laver is sunned on the net, the growth of the water-sticking surface is realized, the water layer is adjusted, and the like.

The use method of the device comprises the following steps:

(1) rising: tying two long edges of the laver culture net on two adjacent brackets, and respectively tying two short edges on two upper-layer pipe fittings; according to the growth condition, climate and sea condition of the laver algae, managers issue control commands on the shore, the control commands are transmitted to an offshore electric control system through a wireless network, a vent valve is controlled to be opened, air enters lower-layer pipe fittings through a vent pipe, a bidirectional water pump is controlled to be opened at the same time, seawater in the lower-layer pipe fittings is pumped into the sea through a water pipe, when the water-leaving distance of a laver culture net meets the requirement, the bidirectional water pump is stopped, and the vent valve is closed; the distance between the laver culture net and the water surface is the rising height, the proper height is adjusted according to the length of the algae, and the laver generally grows to 15-20cm and is collected; at this time, the laver culturing net is exposed to the air to be sunned;

(2) and (3) descending: after the net airing time meets the requirement, a manager issues a control command on the shore, the control command is transmitted to an offshore electric control system through a wireless network, a bidirectional water pump is started, the water inlet and outlet directions of the water pump are adjusted, at the moment, seawater is injected into a lower-layer pipe fitting from the sea by the water pump through a water pipe, a vent valve is controlled to be opened, air in the lower-layer pipe fitting is discharged through a vent pipe, and after an upper-layer pipe fitting falls to the water surface, the bidirectional water pump is stopped, and the vent valve is closed; at this time, the laver cultivation net attached to the upper pipe is immersed in seawater (seawater surface) and grows normally; when the light is too strong and the transparency is too high, the living water layer of the laver net is properly reduced by increasing the water storage amount in the lower layer pipe fitting, so that the adverse effect of long-time high light stress on the growth and the quality of the algae is avoided.

The invention will now be illustrated with reference to specific examples:

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