Siphon drainage device applied to sea urchin culture

Abstract

The utility model relates to the field of aquaculture equipment, in particular to a siphon drainage device applied to sea urchin culture. Comprising a top cover, a U-shaped pipe, a rubber pad, an outer pipe and an inner pipe, a small hole is formed in the top cover, and the diameter of the small hole is smaller than the inner diameter of the U-shaped pipe; the top cover is arranged at the top of the outer pipe, and the rubber pad is clamped between the top cover and the outer pipe, so that a pressure cavity is formed between the rubber pad and the top cover; a connecting pipe is arranged at the top of an inner cavity of the outer pipe, the top end of the inner pipe is embedded into the connecting pipe, and the bottom end of the inner pipe extends out of the outer pipe. One end of the U-shaped pipe is communicated with the pressure cavity, and the other end of the U-shaped pipe is communicated with the connecting pipe. According to the automatic drainage device, the siphon principle is adopted, the automatic drainage function is achieved, seawater containing sea urchin excrement can be automatically drained in time, the labor intensity of manual drainage is relieved, it can be guaranteed that the sea urchin breeding water tank is always kept in a clean state, and a good water environment is created for growth of sea urchin.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of aquaculture equipment, concretely relates to a siphon drainage device for sea urchin culture. BACKGROUND

[0002] As a high economic value marine organism, sea urchin's gonad is rich in protein, unsaturated fatty acids and trace elements, and is one of the core food materials in the high-end catering market. The global sea urchin market size has reached billions of dollars, and the demand continues to grow, especially in the Asian market. At the same time, sea urchin plays the role of "algal regulator" in marine ecology, maintains the health of coral reefs by feeding on algae, and is an important species for the balance of marine ecosystems. Therefore, the development of sea urchin culture technology has both economic and ecological significance.

[0003] The current mainstream sea urchin culture method is mainly raft culture at sea and seabed proliferation. The raft culture at sea suspends the culture cage by floating raft and relies on natural seaweed feeding, which has the advantages of low cost and large scale, such as Japan and the northern coastal areas of China have realized large-scale production. However, this type of outdoor culture mode has significant defects:

[0004] 1) Uncontrollable environment: extreme weather (such as storm surge, high temperature, heavy rain) can easily lead to large-scale death of sea urchin, for example, the sea urchin is sensitive to water temperature, and water temperature above 25℃ will cause spawning or death.

[0005] 2) Difficult water quality management: open sea is easy to be polluted, salt content fluctuates (such as freshwater runoff) and is invaded by pathogens (such as shield ciliates), which causes frequent diseases and a survival rate of only 20%-40%.

[0006] 3) Long culture period and high cost: the natural growth cycle of sea urchin is 1.5-2 years, and the dependence on artificial feeding of seaweed leads to high feed cost, and frequent cleaning of attached organisms (such as barnacles, mussels) is required, which requires a lot of manpower.

[0007] 4) Ecological pressure: over-reliance on wild seaweed resources may disrupt the balance of nearshore ecology, and raft culture facilities (such as net cages) can easily cause marine plastic pollution.

[0008] Under this background, land-based recirculating aquaculture technology has become a breakthrough direction. This mode can effectively avoid natural environmental risks, shorten the culture period (for example, indoor factory culture can make the product available on the market one month earlier), and also improve the feed utilization rate through precise feeding of microalgae or artificial feed.

[0009] For land-based sea urchin farming, to meet the water quality requirements for sea urchin growth, the farming equipment needs to regularly discharge wastewater (i.e., water containing sea urchin excrement). However, most land-based sea urchin farming equipment currently uses manual wastewater discharge; for example, Chinese patent application number CN202321936406.1 discloses a comprehensive sea urchin, sea cucumber, and abalone farming device, which discharges wastewater by manually opening a drain valve at set intervals. This manual wastewater discharge method has many drawbacks. It not only requires a large amount of manpower but also carries the risk that farmers may forget to open the drain valve at set intervals, leading to deteriorated water quality and affecting the survival rate of sea urchins. Utility Model Content

[0010] This utility model provides a siphon drainage device for sea urchin farming. Its purpose is to provide a siphon drainage device that enables regular automatic drainage, thereby solving the problems of low automation and high manpower requirements of existing land-based sea urchin farming equipment.

[0011] To achieve the above objectives, the technical solution of this utility model is as follows:

[0012] This utility model provides a siphon drainage device for sea urchin farming, comprising: a top cover, a U-shaped pipe, a rubber pad, an outer pipe, and an inner pipe; the top cover has a small hole with a diameter smaller than the inner diameter of the U-shaped pipe; the top cover is disposed on the top of the outer pipe, and the rubber pad is sandwiched between the top cover and the outer pipe, thereby forming a pressure chamber between the rubber pad and the top cover; a connecting pipe is disposed at the top of the inner cavity of the outer pipe, the top end of the inner pipe is embedded in the connecting pipe, and the bottom end of the inner pipe extends to the outside of the outer pipe; one end of the U-shaped pipe communicates with the pressure chamber, and the other end communicates with the connecting pipe.

[0013] Furthermore, a connector one is provided at the top of the top cover, and a connector two is provided on the side wall of the outer tube. The connector two communicates with the inner cavity of the connecting tube. One end of the U-shaped tube is embedded in the connector one, and the other end is embedded in the connector two.

[0014] Furthermore, a first connecting flange is provided on the top cover, and a second connecting flange is provided at the top of the outer tube. The rubber gasket is clamped by the first connecting flange and the second connecting flange and fixed with bolts.

[0015] Furthermore, the outer tube is fixed to the bottom of the sea urchin aquaculture tank by several L-shaped brackets.

[0016] Furthermore, a counterweight is provided at the center of the upper surface of the rubber pad.

[0017] Furthermore, the connecting pipe is coaxial with the outer pipe, and the connecting pipe is fixed to the top of the inner cavity of the outer pipe through the second connecting head and two supporting arms. The second connecting head and the two supporting arms are evenly arranged circumferentially.

[0018] Furthermore, a flange platform is also provided on the outer tube.

[0019] The beneficial effects achieved by this utility model are as follows:

[0020] This invention utilizes the siphon principle to achieve automatic drainage, which can promptly and automatically discharge seawater containing sea urchin feces. This not only reduces the labor intensity of manual drainage but also ensures that the sea urchin aquaculture tank is always kept clean, creating a good aquatic environment for sea urchin growth. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Fig. 1 This is a schematic diagram of the usage state of this utility model.

[0023] Fig. 2 This is a schematic diagram of the overall structure of this utility model.

[0024] Fig. 3 This is a perspective view of the present invention (with the top cover hidden).

[0025] Fig. 4 This is a perspective view (from below) of this utility model.

[0026] Fig. 5 This is a cross-sectional view of the present invention.

[0027] Fig. 6 This is a cross-sectional view of the utility model in use.

[0028] In the diagram, 10 is the siphon drainage device; 110 is the top cover; 111 is the small hole; 112 is the connector one; 113 is the connecting flange one; 120 is the U-shaped pipe; 130 is the rubber pad; 131 is the counterweight; 140 is the outer pipe; 141 is the flange platform; 142 is the connector two; 143 is the connecting pipe; 143A is the opening; 144 is the connecting flange two; 145 is the support arm; 150 is the inner pipe; 160 is the water inlet; 170 is the water outlet; 180 is the L-shaped bracket; 20 is the sea urchin aquaculture tank; 210 is the bottom plate; 220 is the partition plate; and 30 is the sewage pipe. Detailed Implementation

[0029] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0030] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0031] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, if the word "and / or" appears throughout the text, it means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0032] This invention provides a siphon drainage device 10 for sea urchin farming, installed at the bottom of the sea urchin farming tank. Combined with a water replenishment mechanism (not shown in the figure), it enables periodic discharge of wastewater. The sea urchin farming tank 20 includes a horizontally arranged bottom plate 210 and four partitions 220, which divide the tank into four farming areas. Both the bottom plate 210 and the partitions 220 have evenly spaced openings. Furthermore, the sea urchin farming tank 20 has a funnel-shaped structure. Sea urchins grow on the bottom plate 210, and their excrement falls directly to the bottom of the tank through the openings, automatically collecting near the siphon drainage device 10.

[0033] like Figs. 1-6As shown, the siphon drainage device 10 includes a top cover 110, a U-shaped pipe 120, a rubber pad 130, an outer pipe 140, and an inner pipe 150. The top cover 110 has a small hole 111, the diameter of which is smaller than the inner diameter of the U-shaped pipe 120. The top cover 110 is positioned on top of the outer pipe 140, and the rubber pad 130 is sandwiched between the top cover 110 and the outer pipe 140, thereby forming a pressure chamber between the rubber pad 130 and the top cover 110. A counterweight 131 is positioned at the center of the upper surface of the rubber pad 130. A connecting pipe 143 is positioned at the top of the inner cavity of the outer pipe 140, the top end of the inner pipe 150 is embedded in the connecting pipe 143, and the bottom end of the inner pipe 150 extends to the outside of the outer pipe 140. Under normal conditions, the rubber pad 130 rests on the top of the connecting pipe 143, and the rubber pad 130 seals the top opening 143A of the connecting pipe 143. The weight of the counterweight 131 is determined by experiment in order to enable the rubber pad 130 to better seal the top opening 143A of the connecting pipe 143.

[0034] One end of the U-shaped pipe 120 is connected to the top cover 110 and communicates with the pressure chamber; the other end is connected to the outer pipe 140 and communicates with the connecting pipe 143; the outer pipe 140 is fixed to the bottom of the sea urchin culture tank by a plurality of L-shaped supports 180; specifically, the plurality of L-shaped supports 180 are evenly distributed around the circumference, and the bottom of the outer pipe 140 rests on the short arm of the L-shaped support 180; under the support of the L-shaped supports 180, a gap is provided between the bottom end of the outer pipe 140 and the bottom of the sea urchin culture tank, and this gap is the inlet 160 of the siphon drainage device 10; the bottom end of the inner pipe 150 passes through the sea urchin culture tank and communicates with the sewage pipe 30, and the bottom end of the inner pipe 150 is the outlet 170 of the siphon drainage device 10.

[0035] Furthermore, the top of the top cover 110 is provided with a connector 112, and the side wall of the outer tube 140 is provided with a connector 142. The connector 142 communicates with the inner cavity of the connecting tube 143. One end of the U-shaped tube 120 is embedded in the connector 112, and the other end is embedded in the connector 142.

[0036] Furthermore, a connecting flange 113 is provided on the top cover 110, and a connecting flange 144 is provided at the top of the outer tube 140. The rubber gasket 130 is clamped by the connecting flange 113 and the connecting flange 144 and fixed by bolts.

[0037] Furthermore, the connecting pipe 143 is coaxial with the outer pipe 140. The connecting pipe 143 is fixed to the top of the inner cavity of the outer pipe 140 by the second connector 142 and two support arms 145. The second connector 142 and the two support arms 145 are evenly arranged around the circumference.

[0038] Furthermore, a flange platform 141 is also provided on the outer tube 140, which is used to provide a placement position for the base plate 210.

[0039] Specifically, the working principle of this utility model is as follows:

[0040] According to actual needs, the staff adjusts the water flow rate of the water replenishment mechanism; the water level in the sea urchin farming tank gradually rises. When the water level surpasses the small hole 111, the water level in the pressure chamber is level with the water level in the sea urchin farming tank and rises accordingly. With continuous water replenishment, when the water level in the sea urchin farming tank gradually rises and overflows the top of the U-shaped pipe to reach the drainage level, a siphon phenomenon occurs in the U-shaped pipe. Since the diameter of the small hole 111 is smaller than the inner diameter of the U-shaped pipe, the water outflow velocity of the pressure chamber is greater than the inflow velocity. The rubber pad 130 is sucked up under the negative pressure in the pressure chamber, opening the connection. The top opening 143A of pipe 143 allows seawater containing sea urchin excrement at the bottom of the sea urchin farming tank to be discharged along the route of the inlet 160 of the siphon drainage device 10 – the top opening 143A of connecting pipe 143 – the outlet 170 of the siphon drainage device 10, ultimately flowing into the sewage pipe 30. The water level in the sea urchin farming tank continuously decreases. When the water level reaches the small hole 111 of the top cover 110, the siphon drainage ends, the rubber pad 130 inside the device descends, blocking the top opening 143A of connecting pipe 143, and the farming tank begins to fill with water. When the water level reaches the drainage level, siphon drainage occurs again, and this cycle repeats. Each drainage depth is 40mm.

[0041] The above description is only an optional embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A siphon drainage device (10) applied to sea urchin culture, characterized in that: The utility model provides a sea cucumber culture water tank, which comprises a top cover (110), a U-shaped pipe (120), a rubber pad (130), an outer pipe (140) and an inner pipe (150); a small hole (111) is arranged on the top cover (110), and the diameter of the small hole (111) is smaller than the inner diameter of the U-shaped pipe (120); the top cover (110) is arranged on the top of the outer pipe (140), the rubber pad (130) is clamped between the top cover (110) and the outer pipe (140), thereby forming a pressure cavity between the rubber pad (130) and the top cover (110); a connecting pipe (143) is arranged on the top of the inner cavity of the outer pipe (140), the top end of the inner pipe (150) is embedded in the connecting pipe (143), and the bottom end of the inner pipe (150) extends to the outside of the outer pipe (140); one end of the U-shaped pipe (120) communicates with the pressure cavity, and the other end communicates with the connecting pipe (143).

2. The siphon drainage device (10) for sea urchin culture according to claim 1, characterized in that: A connecting head one (112) is arranged on the top end of the top cover (110), a connecting head two (142) is arranged on the side wall of the outer pipe (140), the connecting head two (142) communicates with the inner cavity of the connecting pipe (143); one end of the U-shaped pipe (120) is embedded in the connecting head one (112), and the other end is embedded in the connecting head two (142).

3. The siphon drainage device (10) for sea urchin culture according to claim 1, characterized in that: A connecting flange one (113) is arranged on the top cover (110), a connecting flange two (144) is arranged on the top end of the outer pipe (140), the rubber pad (130) is clamped by the connecting flange one (113) and the connecting flange two (144) and is fixed by bolts.

4. The siphon drainage device (10) for sea urchin culture according to claim 1, characterized in that: The outer pipe (140) is fixed at the bottom of the sea cucumber culture water tank through a plurality of L-shaped supports (180).

5. The siphon drainage device (10) for sea urchin culture according to claim 1, characterized in that: A counterweight (131) is arranged on the upper surface of the rubber pad (130) at the center position.

6. The siphon drainage device (10) for sea urchin culture according to claim 1, characterized in that: The connecting pipe (143) is coaxial with the outer pipe (140), the connecting pipe (143) is fixed at the top of the inner cavity of the outer pipe (140) through the connecting head two (142) and two supporting arms (145), and the connecting head two (142) and the two supporting arms (145) are circumferentially arranged.

7. The siphon drainage device (10) for sea urchin culture according to claim 1, characterized in that: A flange platform (141) is further arranged on the outer pipe (140).

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