CN112997936B - Ecological culture district with multiple nutrition levels for mudflat shellfish - Google Patents

Abstract

The invention discloses a multi-nutrition-level ecological breeding community for mudflat shellfish, which comprises a shrimp, crab and shellfish breeding area consisting of a plurality of mutually independent breeding units, wherein one side of each breeding unit is provided with a water inlet ditch, the other side of each breeding unit is provided with a drainage ditch, and the water inlet ditch, the breeding units and the drainage ditch have height differences in sequence so as to realize the flow of water flow from the water inlet ditch, the breeding units to the drainage ditch; one end of each of the water inlet channels is communicated with the same water inlet main channel, one end of each of the water inlet main channels is communicated with an external water source, one end of each of the water drainage channels is communicated with the same water drainage main channel, and the same water treatment pond is arranged between each of the water drainage main channels and the corresponding water drainage channels. The invention can be used for large-scale and multi-nutrition-level ecological culture of the mudflat shellfish in marine aquatic products, so as to provide a culture community mode which has high resource utilization rate and can be applied and popularized in a large scale.

Description

Ecological culture district with multiple nutrition levels for mudflat shellfish

Technical Field

The invention relates to the technical field of aquaculture, in particular to an ecological culture community with multiple nutrition levels for mudflat shellfish.

Background

An aquaculture cell is an aquaculture area with concentrated or relatively concentrated production, and the area of the aquaculture area is generally more than 100 mu. For example, Chinese patent publication No. CN109792966A filed by research institute of fresh water aquaculture in Zhejiang province discloses a novel ecological aquaculture community of circulating water in a pond. This breed district includes the breed district: used for culturing aquatic products; ecological clean area: used for purifying the aquaculture water, the ecological purification area comprises a primary utilization area, a fruit and vegetable purification area, a biological purification area and a deep water area, and a control area: the system is used for monitoring the quality of aquaculture water, and the control area comprises an office area and a management room arranged near the aquaculture area; the cultivation area and the ecological purification area are distributed to form a layout that water flows in an annular runway mode, a primary utilization area, a deep water area and a biological purification area in the ecological purification area are sequentially distributed along the annular runway, and the fruit and vegetable purification area is distributed in the middle of the annular runway in a linear mode.

The culture district can realize water resource recycling, reduce feed coefficient, ecologically culture fishes, aquatic plants, vegetables and the like, is environment-friendly, saves energy, reduces emission and has high culture benefit. However, the concept of the culture community aims at freshwater culture, and the cultured species is freshwater fish, so that the culture community is difficult to adapt to the ecological culture of the large-scale and multi-nutrition level mudflat shellfish in marine aquaculture, and needs to be improved.

Disclosure of Invention

The invention provides a multi-nutrition-level ecological culture community for intertidal shellfish, which can be used for large-scale multi-nutrition-level ecological culture of the intertidal shellfish in marine aquatic products, and provides a culture community mode with high resource utilization rate and large-scale application and popularization.

The technical purpose of the invention is realized by the following technical scheme: an ecological breeding community of multi-nutrition level of mudflat shellfish comprises a shrimp, crab and shellfish breeding area formed by a plurality of mutually independent breeding units, wherein one side of each breeding unit is provided with a water inlet ditch, the other side of each breeding unit is provided with a drainage ditch, and the water inlet ditch, the breeding units and the drainage ditch have height differences in sequence so as to realize the flow of water flow from the water inlet ditch, the breeding units to the drainage ditch;

one end of each of the plurality of water inlet channels is communicated with the same water inlet main channel, one end of each water inlet main channel is communicated with an external water source, a water inlet gate valve is arranged on each water inlet main channel to control the connection and disconnection between the external water source and the water inlet main channel, one end of each of the plurality of drainage channels is communicated with the same drainage main channel, the same water treatment pond is arranged between each drainage main channel and the plurality of drainage channels, the water treatment ponds and the drainage main channels have height differences in sequence to realize the flow of water flow from the plurality of drainage channels, the water treatment ponds to the drainage main channels;

still include aquaculture water purifier, this aquaculture water purifier includes the photoreactor main part, the bottom of photoreactor main part has liquid inlet, be provided with the liquid pump between liquid inlet and the aquaculture water, the top of photoreactor main part has the liquid outlet that can communicate with aquaculture water, through in the liquid pump with the interior raw water suction of aquaculture water in the photoreactor main part, with culture medium, the direct culture photosynthetic bacteria of bacterial, the photosynthetic bacteria who has cultivateed gets back to the aquaculture water in through the liquid outlet again to form a circulation, thereby realize purifying aquaculture water, aquaculture water is the aquaculture water in the main drainage canal.

The present invention in a preferred example may be further configured to: the system also comprises a main valve for connecting and disconnecting the whole culture community with an external water source, and a drainage gate valve for controlling the connection and disconnection of water in the drainage main channel and the outside is arranged on the drainage main channel; the water discharge main channel and the water inlet main channel can be communicated through a water suction pump under the condition that the main valve is closed.

The present invention in a preferred example may be further configured to: each culture unit comprises a plurality of culture ponds which are connected in sequence, so that each culture unit is in a sheet shape; each aquaculture pond correspondingly cultivates an aquatic product.

The present invention in a preferred example may be further configured to: a plurality of ecological floating beds are arranged in the water inlet main channel and the water discharge main channel, salt-tolerant plants are planted in each ecological floating bed, and soft biological fillers are hung at the bottom of each ecological floating bed.

The present invention in a preferred example may be further configured to: the culture community also comprises a culture solid waste recycling area, and the culture solid waste recycling area is positioned at one end of the drainage main channel;

the aquaculture solid waste recycling area comprises a desalting tank, two mutually independent baffles are arranged in the desalting tank, the two baffles divide the desalting tank into three parts which are respectively a first desalting area, a desalting wastewater storage channel and a second desalting area, and one end of the desalting wastewater storage channel is communicated with a main drainage channel;

the first desalination area and the second desalination area respectively comprise a sandstone layer, a sediment layer and a fresh water leaching layer which are sequentially arranged from bottom to top, each baffle is provided with a water outlet, the water outlet can be used for containing the sandstone layer and desalination wastewater into a channel and communicating with the channel, the fresh water leaching layer can be used for introducing fresh water into the sediment layer to realize leaching, salt-containing sediments are saturated and leaching salt water, and finally the desalination wastewater enters the desalination wastewater into the channel.

The present invention in a preferred example may be further configured to: the artificial subsurface flow wetland is arranged in the drainage main channel, each artificial subsurface flow wetland is in a dam shape, oyster shells, ceramsite, gravel and the like are used as biological fillers, and the artificial dams are formed by being bagged, immersed in the drainage main channel and stacked, and are arranged according to 10% of the total area of the drainage channel.

The present invention in a preferred example may be further configured to: the area proportion of the culture district is as follows: 1% seedling raising field, 75% culture pond, 10% water inlet main canal and water inlet ditch, 8% water drainage main canal and water drainage ditch, 5% water treatment pond and 1% culture solid waste resource utilization area, and is suitable for culture plot with total area more than 500 mu.

In conclusion, the invention has the following beneficial effects: the application discloses breed district does not change breed district landform, facility and pond structure as far as possible and designs to reach the requirement of the green ecological development of aquaculture. Particularly, the total ditch of intaking and the ditch of intaking of this application have the retaining function concurrently, make the water yield and the water level that get into in the breed district raise and as the power supply that the inside rivers of breed district flow. The drainage ditch has the function of the primary sedimentation tank, so that the water flow after primary sedimentation is purified by the water treatment pond, the water treatment capacity of the water treatment pond is enhanced, the culture quantity of shrimps and crabs is controlled in the culture process, iced trash fishes and the like are not used as culture baits and rich water, fish meal and feed and the like are used as alternative means, and most of residual bait excrement is treated by utilizing the water body purification function of mudflat shellfish. In addition, a plurality of culture units in the application can respectively culture shellfish marine products of different varieties, and one culture unit can also be selected to be used as a seedling raising field, so that the multi-level coverage of the mudflat shellfish is realized.

Drawings

FIG. 1 is a schematic diagram of an actual layout of a culture community according to the first embodiment;

FIG. 2 is a schematic diagram of a theoretical layout of a culture community according to the first embodiment;

FIG. 3 is a sectional view showing the structure of a desalination tank in accordance with one embodiment;

FIG. 4 is a schematic view showing the direction of flow of fresh water in the desalination tank of FIG. 3;

FIG. 5 is a schematic structural view of the second embodiment;

FIG. 6 is a schematic structural view of a guide rail according to the second embodiment;

FIG. 7 is a schematic diagram showing the connection relationship in the second embodiment;

FIG. 8 is an exploded view of a portion of the base of FIG. 7;

fig. 9 is a schematic structural view of the mounting pipe of the second embodiment.

Reference numerals: 1. a base; 11. a first through hole; 12. a second through hole; 13. a right-angle reducer; 14. a bevel gear set; 15. a groove; 16. inserting a rod; 17. a servo motor; 18. a protective cover; 2. a photoreactor body; 3. a guide rail; 31. a first track; 32. a second track; 4. a drive shaft; 41. a main curtain sheet; 42. a jack; 5. a driven shaft; 51. a side curtain sheet; 6. an LED plant growth lamp; 7. a forward rotation button switch; 8. a reverse button switch; 9. installing a pipe; 91. a water collecting hopper; 92. a control panel; 93. a pull rod; 94. an elastic bulge; 95. A drain hole; 96. a support plate; 97. a spring;

101. a culture unit; 102. a water inlet ditch; 103. a drainage canal; 104. a main water inlet channel; 105. a water inlet gate valve; 106. a main drainage channel; 107. a water treatment pond; 108. a drain gate valve; 109. a main valve; 110. A culture pond; 111. an ecological floating bed; 112. a cultivation solid waste recycling area; 113. a desalting tank; 114. A baffle plate; 115. a first desalination zone; 116. a desalted wastewater receiving channel; 117. a second desalination zone; 118. a sandstone layer; 119. a deposit layer; 120. a fresh water leaching layer; 121. a water outlet; 122. artificial subsurface flow wetland.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The first embodiment is as follows:

as shown in fig. 1-4, the ecological cultivation community with multiple nutrition levels for the mudflat shellfish comprises a shrimp, crab and shellfish cultivation area formed by a plurality of independent cultivation units 101, wherein one side of each cultivation unit 101 is provided with a water inlet channel 102, the other side of each cultivation unit 101 is provided with a water outlet channel 103, and the water inlet channel 102, the cultivation units 101 and the water outlet channels 103 have height differences in sequence so as to realize the flow of water from the water inlet channel 102, the cultivation units 101 to the water outlet channels 103.

One end of each of the water inlet channels 102 is connected to a water inlet main channel 104, one end of the water inlet main channel 104 is connected to an external water source, and the water inlet main channel 104 is provided with a water inlet gate valve 105 for controlling the connection and disconnection between the external water source and the water inlet main channel 104.

One end of the drainage channels 103 is communicated with a same drainage main channel 106, a same water treatment pond 107 is arranged between the drainage main channel 106 and the drainage channels 103, the water treatment pond 107 and the drainage main channel 106 have height differences in sequence so as to realize the flow of water flow from the drainage channels 103, the water treatment pond 107 to the drainage main channel 106. So that the aquaculture wastewater existing in the drainage channel 103 is introduced into the water treatment pond 107 to be purified to discharge the purified water into the drainage main channel 106.

The application discloses breed district does not change breed district landform, facility and pond structure as far as possible and designs to reach the requirement of the green ecological development of aquaculture. Specifically, the main water inlet channel 104 and the main water inlet channel 102 of the present application have a water storage function, so that the water volume and the water level entering the cultivation cell can be raised and used as a power source for the flow of water in the cultivation cell. The drainage canal 103 also has the function of a primary sedimentation tank, so that the water flow after primary sedimentation is purified by the water treatment pond 107, the water treatment capacity of the pond is enhanced, the culture quantity of shrimps and crabs is controlled in the culture process, iced trash fishes and the like are not used as culture baits and rich water, fish meal and feed and the like are used as substitution means, and most of residual bait excrement is treated by the water body purification function of mudflat shellfish. In addition, a plurality of culture units 101 in the application can respectively culture shellfish marine products of different varieties, and one culture unit 101 can also be selected to be used as a seedling raising field, so that the multi-level coverage of the mudflat shellfish is realized.

Furthermore, a drain gate valve 108 is disposed on the main drain channel 106 for controlling the water in the main drain channel 106 to be connected to the outside. In addition, the system also comprises a main valve 109 which is connected with the whole culture district and an external water source.

With the main valve 109 closed, the drain main channel 106 and the inlet main channel 104 may be in communication (i.e., a water pump may be used to overcome the difference in liquid level height). So that water in the main drain channel 106 can flow into the main inlet channel 104 to form a circulation. Specifically, the following are mentioned: the water in the main drainage channel 106 purified by the water treatment pond 107 can be recycled.

Under the condition that the main valve 109 and the water inlet gate valve 105 are opened, the drainage gate valve 108 is closed, an external water source can be introduced, and the directional drainage of water flow is realized by utilizing the height difference formed by the culture communities. In this application, the water source is seawater.

Further, each culture unit 101 comprises a plurality of culture ponds 110 connected in sequence, so that each culture unit 101 is formed into a sheet shape. Each cultivation pond 110 correspondingly cultivates a marine product, such as blood clam, penaeus vannamei or blue crab.

Furthermore, the main water inlet channel 104 and the main water outlet channel 106 can be used for culturing seawater fish, so that the economic benefit of the whole culture community is improved.

Furthermore, a plurality of ecological floating beds 111 are arranged in each of the water inlet main channel 104 and the water outlet main channel 106, salt-tolerant plants are planted in each ecological floating bed 111, and soft biological fillers are hung at the bottom of each ecological floating bed 111.

The external water source of the application is seawater, so that aiming at the self purification scheme of the aquaculture water body, the ecological floating beds 111 are selected in the water inlet main channel 104 and the water outlet main channel 106, and salt-tolerant plants such as salicornia, Kandelia candel, Spartina alterniflora, dens hippocastanum, Carex fusca or reeds domesticated by seawater are planted on the floating beds to realize the purification of the water body.

Further, the water inlet main canal 104 and the water outlet main canal 106 are paved with ecological floating beds 111 with areas of 1% and 10%, respectively. The water pollutants in the main drainage channel 106 are larger than those in the main water inlet channel 104, so that the water purification effect of the main drainage channel 106 is further solved by increasing the laying area of the ecological floating bed 111, and the water recycling of the culture district is further realized.

Further, the cultivation community also includes a cultivation solid waste utilization area 112, and the cultivation solid waste utilization area 112 is located at one end of the main drainage channel 106.

The cultivation solid waste recycling area 112 comprises a desalination tank 113, two baffles 114 which are independent of each other are arranged in the desalination tank 113, the desalination tank 113 is divided into three parts by the two baffles 114, the three parts are respectively a first desalination area 115, a desalination waste water storage channel 116 and a second desalination area 117, and one end of the desalination waste water storage channel 116 is communicated with the main drainage channel 106.

The first desalination region 115 and the second desalination region 117 each include a sandstone layer 118, a sediment layer 119, and a fresh water leaching layer 120, which are sequentially disposed from bottom to top, and each baffle 114 is provided with a water outlet 121, and the water outlet 121 can communicate the sandstone layer 118 with the desalination wastewater receiving channel 116. The fresh water leaching layer 120 can introduce fresh water to the sediment layer 119 to realize leaching, so that the salt-containing sediment is saturated and salt water is leached out, the effect of desalting the sediment is achieved, and the desalted wastewater enters the desalted wastewater receiving channel 116.

Residual organic matters of feed, fish meal and the like used in the marine culture process can be deposited in pond bottom mud to form marine sediments; periodic cleaning of the marine sediments is beneficial to marine culture in the next year. In addition, most of the existing feeds are produced by brand companies according to standardization, and the heavy metals in aquaculture water bodies do not exceed the standard after year-round monitoring, so that the pollution of toxic substances and heavy metals in sewage can be eliminated, sediments can be recycled, and the feeds belong to usable or convertible harmless substances. In addition, the crude fiber in the feed is not digested and absorbed basically, and a small amount of crude fiber only remains in the sediment to form solid insoluble substances. In order to convert the sediments into fertilizers and supply the fertilizers to orchard planting, the seawater sediments need to be desalted.

The application is to reform the original partial main drainage channel 106 to be used as a desalting pond 113, and a sandstone layer 118 is laid at the bottom of the first desalting zone 115 and the second desalting zone 117 to be used as a filter layer. Under the condition of drip irrigation and leaching, the salt-containing sediments are saturated and salt water is leached out, so that the effect of desalting the sediments is achieved. Specifically, the following are mentioned: the fresh water leaching layer 120 of the present application is substantially provided with a fresh water pipe leaching device above the sediment layer 119, that is, fresh water is sprayed into the sediment layer 119 through the fresh water pipe leaching device to realize leaching desalination effect. The sediments after desalination can be directly used for planting fertilizers, the desalination wastewater can be used as culture medium of seawater probiotics, a proper carbon source and probiotic strains are added, aeration is carried out, the probiotics can be cultured on site for mariculture, and secondary pollution of the desalination wastewater is prevented.

Further, a plurality of artificial subsurface wetland 122 are arranged in the drainage main channel 106, each artificial subsurface wetland 122 is in a dam shape, oyster shells, ceramsite, gravel and the like are used as biological fillers, the artificial dams are bagged and then are sunk into the drainage main channel 106 to be stacked to form artificial dams, and the artificial dams are arranged according to 10% of the total area of the drainage channel 103 and are constructed with the height of 1 meter. The artificial subsurface wetland 122 is constructed to increase the time for the water body to stay in the main drainage channel 106, so that the biological filler and the ecological floating bed 111 are convenient to realize further water body purification.

Further, the best area proportion of this application breed district is: the cultivation method comprises the steps of 1% of seedling raising field, 75% of cultivation pond 110, 10% of water inlet main channel 104 and water inlet channel 102, 8% of water drainage main channel 106 and water drainage channel 103, 5% of water treatment pond 107 and 1% of cultivation solid waste recycling area 112, and is suitable for cultivation communities with the total area of more than 500 mu.

Specifically, the following are mentioned: the optimal area proportion of this application breed district is got through long-term practice, under the circumstances of guaranteeing 110 (75%) as much as possible breed aquatics pond, and the water purification ability in this breed district is richened to the make full use of all the other areas (25%), realizes the cyclic utilization of water. In addition, the areas of the main water inlet channel 104 and the main water inlet channel 102 are larger than the areas of the main water discharge channel 106 and the water discharge channel 103, so that the water body in the culture community can have automatic power under the condition of fully storing water, and the water body can be recycled.

Furthermore, the area of each culture pond 110 is 20-30 mu, the beach area accounts for 30-50%, the water depth of the circular trench is 1.2-1.5 m, and the water depth of the beach is 0.3-0.5 m.

The ratio of the economic benefits of cultivation is shown in the table I:

table one: comparison of breeding benefits before and after breeding community

From table one, it can be seen that: the method is characterized in that clams or clams are used as breeding objects, and penaeus vannamei, blue crabs and seawater fishes are used for auxiliary breeding, wherein the breeding yield of mudflat shellfish accounts for more than 80% of the total yield, the mixed breeding of fishes, shrimps and crabs is realized by fully utilizing the breeding space and improving the breeding benefit on one hand, and the fed shrimp and crab feed and metabolites thereof are used as nutrient sources for culturing algae (shellfish bait), namely the shrimp and crab feed and the metabolites thereof can be used as the bait nutrient sources of the mudflat shellfish, so that the breeding tail water treatment and environment regulation and control capability are improved while a circulation is formed in a breeding district, the seawater fishes are newly added as breeding varieties, and the comprehensive benefit is improved.

The culture benefit data of different marine products are as follows:

item	No. 1 pond	No. 2 pond	No. 3 pond	Average data
					Shellfish yield (kg)	17100	9430	15100	13876.7
Fish yield (kg)	22113	18785	20395	20431
					Shrimp yield (kg)	2657	1630	1861	2049.3
Total yield (kg)	41870	29845	37356	36357
					Total yield (Yuan)	1717670	1119110	1264946	1367242
Profit (yuan)	630755	177614	253316	353895
					Profit mu (Yuan)	25230	7104	11515	14616.3

Example two:

the difference from the first embodiment is that, as shown in fig. 1 and 5-9, the culture community further comprises a culture water body purification device, and the culture water body purification device comprises a strip-shaped base 1 and a photoreactor main body 2 fixed on the base 1 along the length direction of the base 1. The photoreactor body 2 is used for realizing the culture and discharge of microorganisms so as to realize the purification of water environment. The bottom of the photoreactor main body 2 is provided with a liquid inlet, a liquid pump is arranged between the liquid inlet and the aquaculture water body, and the top of the photoreactor main body 2 is provided with a liquid outlet which can be communicated with the aquaculture water body. The culture raw water in the culture water body is pumped into the photoreactor main body 2 through the liquid pump, the culture medium and the strains are added to directly culture the photosynthetic bacteria, and the cultured photosynthetic bacteria return to the culture water body through the liquid outlet to form a circulation, so that the culture water body is purified.

In the present application, the body of aquaculture water is the aquaculture water in the main drainage channel 106.

As shown in fig. 1 and 2, two ends of the base 1 are both vertically provided with guide rails 3, and a pair of guide rails 3 are distributed on two sides of the photoreactor main body 2. Each guide rail 3 comprises a pair of vertical first rails 31 arranged side by side, the upper ends of the pair of first rails 31 are provided with the same arched second rail 32, and the connecting positions of the first rails 31 and the second rails 32 are in a circular arc transition shape.

As shown in fig. 2 and 3, the base 1 is hollow, a driving shaft 4 is horizontally and rotatably connected in the base 1, and the driving shaft 4 is arranged along the length direction of the base 1 and is located on one side of the base 1. The base 1 is provided with a first elongated through hole 11 in a penetrating manner, and the first through hole 11 is arranged along the length direction of the base 1 and is positioned right above the driving shaft 4.

As shown in fig. 2 and 3, the driving shaft 4 is wound with a main curtain sheet 41, one end of the main curtain sheet 41 passing through the first through hole 11 is slidably connected to the outer sidewall of the first rail 31, and the main curtain sheet 41 can move along the outer sidewall of one of the first rails 31 to the outer sidewall of the second rail 32 and then to the outer sidewall of the other first rail 31, so as to cover the photoreactor body 2.

As shown in fig. 2 and 3, a pair of driven shafts 5 is horizontally and rotatably connected in the base 1, and the pair of driven shafts 5 are arranged along the width direction of the base 1 and distributed at two ends of the base 1. A pair of second through holes 12 is formed in the base 1 in a penetrating manner, the second through holes 12 are arranged along the width direction of the base 1, and the two second through holes 12 are respectively located right above the pair of driven shafts 5.

As shown in fig. 2 and 3, each driven shaft 5 is wound with a side curtain sheet 51, and each side curtain sheet 51 penetrates through the second through hole 12 and is slidably connected to the inner side walls of the pair of first rails 31, and covers the first rails 31 and the second rails 32, so as to cover both ends of the photoreactor body 2. Meanwhile, the inner sides of the main curtain sheet 41 and the side curtain sheets 51 are both provided with LED plant growth lamps 6 so as to simulate sunlight.

Further, the main curtain sheet 41 and the side curtain sheets 51 are both PVC rolls, and have a thickness of 2mm to 5mm, preferably 3 mm. If the thicknesses of the main curtain sheet 41 and the side curtain sheets 51 are too small, folding is likely to occur when sliding on the guide rail, and the force provided by the servo motor is difficult to be transmitted to the main curtain sheet 41 and the side curtain sheets 51, so that the main curtain sheet 41 and the side curtain sheets 51 are difficult to ascend and creep along the guide rail. If the main curtain sheet 41 and the side curtain sheet 51 have a large thickness, it is difficult to wind the driving shaft 4 and the driven shaft 5. Therefore, the thickness of the device is 2mm-5mm, especially 3 mm.

Further, the LED plant growth lamp 6 is a patch light source, which can be understood as a light bar or a light strip. This is the prior art, commonly used in life, and will not be described in detail herein.

Specifically, in the present invention, the guide rail 3 is designed in a U-shape, and the outer side surface of the guide rail 3 is creatively slidably connected to the main curtain sheet 41 and the inner side surface of the U-shaped guide rail 3 is slidably connected to the side curtain sheet 51 by using the specific shape of the U-shaped guide rail 3, thereby covering the photoreactor main body 2. When the rainy season comes, through the above arrangement, the erosion of the photo reactor main body 2 by rainwater can be avoided, so that the service life of the photo reactor main body 2 is prolonged. In addition, the photo-reactor body 2 can culture photosynthetic bacteria in rainy season while improving the service life.

As shown in fig. 2 and 3, a pair of right-angle reducers 13 is disposed in the base 1, and the pair of right-angle reducers 13 are distributed at two ends of the base 1 and are located between the driving shaft 4 and the driven shaft 5. Wherein, a bevel gear set 14 which is meshed with each other is arranged between one end of the driving shaft 4 and the driven shaft 5 which are close to each other and the right-angle reducer 13, therefore, when the driving shaft 4 rotates, the driven shaft 5 can synchronously rotate, and the rotating speed is less than that of the driving shaft 4.

As shown in fig. 2 and 3, a groove 15 is horizontally arranged on one side of the base 1 away from the first through hole 11, the groove 15 is arranged in a long strip shape and is arranged along the length direction of the base 1, and meanwhile, the groove 15 is used for embedding the end of the main curtain sheet 41. The outer side of one side of the main curtain sheet 41 embedded in the groove 15 is provided with an insertion hole 42, and the base 1 is horizontally and threadedly connected with an insertion rod 16 for inserting the insertion hole 42, so as to realize locking and fixing of the main curtain sheet 41 and the side curtain sheet 51.

Therefore, when raining, the driving shaft 4 is controlled to rotate, and the driven shaft 5 is driven to rotate together by the cooperation of the bevel gear set 14 and the right-angle reducer 13. The driving shaft 4 winds the main curtain sheet 41 down and controls the main curtain sheet 41 to move outwards along the first through hole 11, and the main curtain sheet 41 slides along the outer side wall of the guide rail 3 and finally covers and covers the photoreactor body 2. Finally, the end of the main curtain sheet 41 moves into the groove 15, and then the inserting hole 42 on the main curtain sheet 41 is inserted by rotating the inserting rod 16, so that the main curtain sheet 41 and the side curtain sheets 51 are locked and fixed.

Meanwhile, the driven shaft 5 winds down the side curtain pieces 51 and controls the side curtain pieces 51 to move outwards along the second through holes 12, at this time, the side curtain pieces 51 slide upwards along the inner sides of the pair of first rails 31, and finally, the two ends of the rails are covered, so that the photoreactor main body 2 is covered and covered in all directions. Meanwhile, the LED plant growth lamps 6 on the inner sides of the main curtain sheet 41 and the side curtain sheets 51 can be used as natural light, so that photosynthetic bacteria can be continuously propagated, the cultivation method is suitable for cultivation in plum rain seasons, the cultivation efficiency of the photosynthetic bacteria is improved, and the requirement of purifying the culture water body in the plum rain seasons is met.

Specifically, the following are mentioned: the main curtain sheet 41 and the side curtain sheets 51 can be locked and fixed at the same time through the matching of the inserted rod 16 and the insertion hole 42 on the main curtain sheet 41. Specifically, the bevel gear set 14 is disposed between the right angle reducer 13 and the end of the driving shaft 4 close to the driven shaft 5, and the bevel gear set 14 maintains the engaged state, so that the driving shaft 4 is restricted from rotating when the insertion rod 16 is engaged with the insertion hole 42 of the main curtain sheet 41, and the driving shaft is restricted from rotating when the driving shaft is not rotated and the driven shaft 5 is restricted from rotating when the bevel gear set 14 is used. At this time, the bevel gear set 14 exerts a self-locking effect.

As shown in fig. 3 and 4, a servo motor 17 for driving the driving shaft 4 to rotate is arranged in the base 1, a forward button switch 7 and a reverse button switch 8 are arranged on the base 1, and the forward button switch 7 and the reverse button switch 8 respectively control the servo motor 17 to rotate forward and reverse.

As shown in fig. 3 and 4, when the forward rotation button switch 7 is pressed down, the driving shaft 4 automatically rotates forward, that is, the main curtain sheet 41 and the side curtain sheets 51 cover the photoreactor main body 2. After the reverse button switch 8 is pressed down, the driving shaft 4 automatically works in reverse. Namely, the main curtain sheet 41 and the side curtain sheet 51 release the covering of the photoreactor body 2.

As shown in fig. 4 and 5, a protective cover 18 covering the reverse rotation button switch 8 is provided on the base 1, the protective cover 18 is used for preventing dust and water of the reverse rotation button switch 8, an installation pipe 9 covering the forward rotation button switch 7 is also vertically provided on the upper end surface of the base 1, and a water collection bucket 91 arranged in a flaring shape is provided on the upper end of the installation pipe 9.

As shown in fig. 4 and 5, a control plate 92 is horizontally disposed in the mounting pipe 9, and a pull rod 93 located outside the water collecting hopper 91 is vertically disposed on an upper end surface of the control plate 92. The control plate 92 is vertically slidably connected to the mounting pipe 9, and is used to press the forward rotation push button switch 7.

As shown in fig. 4 and 5, an elastic protrusion 94 abutting against the lower end surface of the control plate 92 is disposed at the middle of the mounting tube 9 to achieve the primary clamping limit of the control plate 92, and a drainage hole 95 located above the forward rotation button switch 7 is disposed at the outer side of the lower end of the mounting tube 9.

When it rains suddenly and nobody is beside the photo reactor body 2, rainwater accumulates in the water collecting hopper 91 and gradually flows into the installation tube 9. When the amount of accumulated water in the installation pipe 9 is large, the gravity of the rainwater drives the control plate 92 to open the elastic protrusion 94 and move downward. At this time, the control plate 92 strikes the forward rotation button switch 7 to move downward, and the forward rotation button switch 7 is pressed, so that the main curtain sheet 41 and the side curtain sheets 51 cover and cover the photoreactor main body 2.

Further, the end of the control plate 92 facing the mounting tube 9 is provided with a gasket (not shown in the drawings) between the control plate 92 and the mounting tube 9. Rainwater above the control panel 92 can be prevented from entering the lower part of the control panel 92 by the sealing gasket, so that the forward rotation button switch 7 can not contact rainwater, and the rainwater is prevented from influencing the forward rotation button switch 7.

When the control panel 92 moves to the lower part of the drain hole 95, the rainwater is gradually discharged along the drain hole 95 to ensure the normal drainage of the rainwater, so as to prevent the water body above the control panel 92 from being overweight and damaging the forward button switch 7.

When the rainfall stops, the whole installation tube 9 is taken down from the forward rotation button switch 7, and the falling of residual water can be realized. At this time, the pull rod 93 is pulled manually to drive the control plate 92 to move upwards, so that the control plate 92 moves above the elastic bulge 94, and the control plate 92 is reset. Then the reverse button switch 8 is manually controlled to be opened and closed so as to release the covering and covering of the photoreactor main body 2.

Further, a support plate 96 is provided between the base 1 and the forward rotation button switch 7, and the outer side of the support plate 96 is in contact with the inner wall of the mounting pipe 9. In this application, through setting up the position height of backup pad 96 in order to raise corotation button switch 7, and locate the outside of backup pad 96 through installation pipe 9 cover to the rainwater of avoiding the whereabouts is hitting the rain flower that splashes on base 1 and is contacting with corotation button switch 7, thereby further improves the water-proof effects who just changes button switch 7 well.

Further, springs 97 are disposed on the upper end surface of the support plate 96, two springs 97 are disposed on two sides of the forward rotation button switch 7, one end of each spring 97 is fixedly connected to the support plate 96, and the other end of each spring 97 can abut against the control plate 92. The upper end of each spring 97 is flush with the lower edge of the water discharge hole 95 without external force.

When the amount of accumulated water in the installation pipe 9 is large, the gravity of the rainwater itself drives the control plate 92 to open the elastic projection 94 and move downward. At this time, the control plate 92 moves downwards, and the driving spring 97 is stressed and extruded to impact the forward rotation button switch 7, so that the forward rotation button switch 7 is pressed, and the main curtain sheet 41 and the side curtain sheets 51 cover and cover the photoreactor main body 2.

In the above description, the distance between the upper end surface of the forward rotation push button switch 7 and the lower edge of the drain hole 95 is denoted by X, and it can be known from hooke's law that: f ═ KX, so in this application: g_{Control panel}+G_{Pull rod}＝2F＝2KX。

That is, the weight of the control plate 92 and the weight of the pull rod 93 are equal to the elastic force of the two springs 97 after being compressed by the distance X. Therefore, when rainwater exists in the mounting pipe 9 above the control plate 92, the control plate 92 is driven to be flushed away by the gravity of the rainwater and moved downward. At this time, the control plate 92 moves downward, and the driving spring 97 is pressed by force, so that the forward rotation button switch 7 is inevitably impacted, and the forward rotation button switch 7 is pressed. In addition, the purpose of this application setting spring 97 is for after being pressed to the normal rotation button switch 7, spring 97 can promote control panel 92 to move up for the rainwater in the installation pipe 9 can be more discharge through wash port 95, still avoid pressing to the normal rotation button switch 7 for a long time in addition, because current button switch's sensitivity is higher, therefore the dynamics of pressing should not be too big, whether the person can cause the phenomenon of card pause, and still can reduce normal rotation button switch 7's life after long-term the use.

Further, corotation button switch 7 can also be the switch that control LED vegetation lamp 6 starts, and reversal button switch 8 can also be the switch that control LED vegetation lamp 6 closed.

In the present application, the push switch has a dual-purpose effect, that is, when the forward rotation button switch 7 is pushed, the main curtain sheet 41 and the side curtain sheet 51 cover and cover the photo reactor main body 2, and the LED plant growth lamp 6 is turned on to realize photosynthesis.

Pressing the reverse button switch 8 can release the main curtain sheet 41 and the side curtain sheet 51 from covering the photoreactor main body 2, and simultaneously turn off the LED plant growth lamp 6 to save electricity.

In addition, this application still provides a scheme, is provided with a lamp source that is used for starting LED vegetation lamp 6 and starts push switch (the attached drawing does not mark) by corotation button switch 7 promptly, and can press in step to corotation button switch 7, lamp source start push switch through control panel 92 pushes down to realize the start-up of LED vegetation lamp 6 and the corotation of servo motor. This is the prior art, and detailed description is not given here, but all technical solutions capable of implementing the above functions should be protected by the present invention.

Furthermore, the servo motor of the application is controlled by a PLC control assembly to realize the forward rotation or the reverse rotation of the output end of the servo motor to required parameters, which is the prior art, and Chinese patent with the publication number of CN210608843U discloses an intelligent servo motor based on the PLC control technology.

By adopting the servo motor with the PLC control assembly, the servo motor can be rotated by a certain amount by pressing the forward rotation button switch 7 and the reverse rotation button switch 8, so that the end part of the main curtain sheet 41 moves into the groove 15.

The specific embodiments are only for explaining the present invention, and the present invention is not limited thereto, and those skilled in the art can make modifications without inventive contribution to the present embodiments as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims (5)

1. An ecological culture district with multiple nutrition levels for intertidal shellfish is characterized in that: the shrimp, crab and shellfish breeding device comprises a shrimp, crab and shellfish breeding area formed by a plurality of mutually independent breeding units (101), wherein one side of each breeding unit (101) is provided with a water inlet channel (102), the other side of each breeding unit (101) is provided with a water outlet channel (103), and the water inlet channel (102), the breeding units (101) and the water outlet channels (103) have height differences in sequence so as to realize the flow of water flow from the water inlet channel (102), the breeding units (101) to the water outlet channels (103);

one end of each of the water inlet channels (102) is communicated with a same water inlet main channel (104), one end of each of the water inlet main channels (104) is communicated with an external water source, a water inlet gate valve (105) is arranged on each of the water inlet main channels (104) to control the connection and disconnection between the external water source and each of the water inlet main channels (104), one end of each of the drainage channels (103) is communicated with a same drainage main channel (106), a same water treatment pond (107) is arranged between each of the drainage main channels (106) and each of the drainage channels (103), and the drainage channels (103), the water treatment ponds (107) and the drainage main channels (106) have height differences in sequence to realize the flow of water from the drainage channels (103), the water treatment ponds (107) to the drainage main channels (106);

the aquaculture water purification device comprises a photoreactor main body (2), wherein a liquid inlet is formed in the bottom of the photoreactor main body (2), a liquid pump is arranged between the liquid inlet and the aquaculture water, a liquid outlet communicated with the aquaculture water is formed in the top of the photoreactor main body (2), aquaculture raw water in the aquaculture water is pumped into the photoreactor main body (2) through the liquid pump, the photosynthetic bacteria are directly cultured by adding a culture medium and strains, and the cultured photosynthetic bacteria return to the aquaculture water through the liquid outlet to form a circulation, so that the aquaculture water is purified, and the aquaculture water is aquaculture water in a drainage main channel (106);

the cultivation community also comprises a cultivation solid waste recycling area (112), and the cultivation solid waste recycling area (112) is positioned at one end of the main drainage channel (106);

the cultivation solid waste recycling area (112) comprises a desalting tank (113), two baffles (114) which are independent of each other are arranged in the desalting tank (113), the desalting tank (113) is divided into three parts by the two baffles (114), the three parts are respectively a first desalting area (115), a desalting waste water storage channel (116) and a second desalting area (117), and one end of the desalting waste water storage channel (116) is communicated with a main drainage channel (106);

the first desalting zone (115) and the second desalting zone (117) respectively comprise a sandstone layer (118), a sediment layer (119) and a fresh water leaching layer (120) which are sequentially arranged from bottom to top, each baffle (114) is provided with a water outlet (121), the sandstone layer (118) and the desalting wastewater receiving channel (116) are communicated through the water outlets (121), the fresh water leaching layer (120) introduces fresh water to the sediment layer (119) to realize leaching, so that the salt-containing sediments are saturated and the salt water is leached out, and finally the desalting wastewater enters the desalting wastewater receiving channel (116);

an external water source is seawater, a plurality of ecological floating beds (111) are arranged in each of the water inlet main channel (104) and the water discharge main channel (106), salt-tolerant plants are planted in each ecological floating bed (111), and soft biological fillers are hung at the bottom of each ecological floating bed (111) to purify a water body;

the plurality of culture units are used for respectively culturing shellfish marine products of different varieties, one culture unit is selected to be used as a seedling raising field, and multi-level coverage of the mudflat shellfish is realized.

2. The ecological beach shellfish farming community of claim 1 that is multi-trophic level, characterized in that: the system also comprises a main valve (109) for connecting and disconnecting the whole culture community with an external water source, wherein a drainage gate valve (108) for controlling the connection and disconnection of water in the drainage main channel (106) and the outside is arranged on the drainage main channel (106); the water discharge main channel (106) is communicated with the water inlet main channel (104) through a water suction pump under the condition that the main valve (109) is closed.

3. The ecological beach shellfish farming community of claim 2 that is multi-trophic level, characterized in that: each culture unit (101) comprises a plurality of culture ponds (110) which are connected in sequence, so that each culture unit (101) is shaped like a sheet; each aquaculture pond (110) is used for correspondingly culturing an aquatic product.

4. The ecological beach shellfish farming community of claim 3 that is multi-trophic level, characterized in that: a plurality of artificial subsurface flow wetlands (122) are arranged in the drainage main channel (106), each artificial subsurface flow wetland (122) is in a dam shape, oyster shells, ceramic particles and crushed stones are used as biological fillers, and the artificial dams are bagged, sunk into the drainage main channel (106) and stacked to form artificial dams and arranged according to 10% of the total area of the drainage channel (103).

5. The ecological beach shellfish farming community of claim 4 that is multi-trophic level, which is characterized in that: the area proportion of the culture district is as follows: the cultivation system comprises a 1% seedling raising field, a 75% cultivation pond (110), a 10% water inlet main channel (104), a water inlet channel (102), an 8% water drainage main channel (106), a water drainage channel (103), a 5% water treatment pond (107) and a 1% cultivation solid waste resource utilization area (112), and is suitable for cultivation communities with the total area of more than 500 mu.

Images