A spiral type circulating water aquaculture system

Abstract

The application discloses a spiral type circulating water aquaculture system, which comprises a plurality of aquaculture barrels, a sedimentation tank and a protein separator, a supporting shaft is arranged at the center of the bottom of the aquaculture barrel, a water inlet pipe is arranged at the upper end of the supporting shaft, a water outlet pipe is communicated with the side wall of the lower part of the aquaculture barrel, a sedimentation water inlet pipe is communicated with the upper part of the sedimentation tank, the sedimentation water inlet pipe is communicated with all the water outlet pipes, a first water pump is arranged at the middle part of the sedimentation water inlet pipe, a sedimentation water outlet pipe is communicated with the other side of the sedimentation tank, a spiral transparent disinfection pipe is communicated with the sedimentation water outlet pipe, an ultraviolet disinfection lamp is arranged at the middle part of the spiral transparent disinfection pipe, a purification water inlet pipe is communicated with the spiral transparent disinfection pipe, a second water pump is arranged at the middle part of the purification water inlet pipe, the purification water inlet pipe is communicated with the inlet end of the protein separator, a purified water injection pipe is communicated with the outlet end of the protein separator, and the purified water injection pipe is communicated with all the water inlet pipes.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of aquaculture, in particular to a spiral shellfish recirculating aquaculture system. BACKGROUND

[0002] In China, there are many kinds of edible snails. In order to meet market demand, large-scale artificial breeding of snails has been carried out. Many snails need to be laid on a layer of sand at the bottom of the pool during breeding, which is different from conventional aquaculture. For example, the cultivation of Trochus niloticus L. requires 5-10 cm of sand to be laid at the bottom of the pool.

[0003] Trochus niloticus L. is commonly known as flower snail, belonging to Gastropoda, Stenoglossa, Buccinidae and Bolinus. It is rich in nutrients and delicious, and is widely loved by people. Due to the great market potential of Trochus niloticus L., it is suitable for factory cultivation and has broad development prospects, and has become an important variety of marine shellfish culture in the coastal areas of southern China. At present, in order to reduce the energy consumption per unit yield, the density of Trochus niloticus L. has been increased. However, with the increase of the breeding density, the disease of Trochus niloticus L. is serious, and the disease of Trochus niloticus L. can be transmitted through water, resulting in a decrease in yield. In addition, the increase of the breeding density also causes the sand layer of the culture pond to be seriously blackened, and the nitrogen and phosphorus content of the sand layer to be increased, thereby causing the growth rate and survival rate of Trochus niloticus L. to decrease. SUMMARY

[0004] The purpose of the present application is to provide a spiral shellfish recirculating aquaculture system, which can purify and disinfect water during cultivation, and is convenient to replace the sand layer, which is helpful for the growth of snails, improves the survival rate, and increases the yield of cultivation.

[0005] The above technical purpose of the present application is realized by the following technical scheme:

[0006] A spiral shellfish recirculating aquaculture system, comprising a plurality of breeding barrels with open upper ends, a sedimentation tank and a protein separator, a support shaft is arranged upward in the center of the bottom of the breeding barrel, an inlet pipe is arranged at the upper end of the support shaft, a plurality of water outlets are formed in the side wall of the lower end of the inlet pipe, a water outlet pipe is communicated with the side wall of the lower part of the breeding barrel, a sedimentation inlet pipe is communicated with the upper part of the sedimentation tank, the sedimentation inlet pipe is communicated with all the water outlet pipes, a first water pump is arranged in the middle part of the sedimentation inlet pipe, a sedimentation outlet pipe is communicated with the side of the sedimentation tank away from the sedimentation inlet pipe, a spiral transparent disinfection pipe is communicated with the free end of the sedimentation outlet pipe, an ultraviolet disinfection lamp is arranged in the middle part of the spiral transparent disinfection pipe, a purification inlet pipe is communicated with the free end of the spiral transparent disinfection pipe, a second water pump is arranged in the middle part of the purification inlet pipe, the free end of the purification inlet pipe is communicated with the inlet end of the protein separator, a purified water injection pipe is communicated with the outlet end of the protein separator, the purified water injection pipe is communicated with all the inlet pipes, a third water pump is arranged in the middle part of the purified water injection pipe.

[0007] The open end of the culture barrel is provided with an annular track, a shell is slidably connected on the annular track, the lower end of the shell is provided with a sand discharging pipe and a sand distributing pipe which are close to each other and are both L-shaped, the vertical sections of the sand discharging pipe and the sand distributing pipe are close to the side wall of the culture barrel, the horizontal sections of the sand discharging pipe and the sand distributing pipe are close to the bottom of the culture barrel, the lower end of the supporting shaft is sleeved with a rotating ring which rotates around the supporting shaft, the free ends of the sand discharging pipe and the sand distributing pipe are connected with the rotating ring, the sides of the horizontal sections of the sand discharging pipe and the sand distributing pipe which are away from each other are both provided with openings, L-shaped flexible screw rods are rotatably connected in the sand discharging pipe and the sand distributing pipe, a driving motor is mounted on the shell for driving the two flexible screw rods to rotate, the upper end of the sand discharging pipe is communicated with a discharging pipe which is outward and obliquely downward, the upper end of the shell is provided with a sand adding funnel which is communicated with the upper end of the sand distributing pipe, the culture barrel is provided below the annular track with an annular sand receiving groove which is matched with the discharging pipe, one side of the annular sand receiving groove is communicated with a sand discharging groove, and the side of the sand discharging groove which is away from the annular sand receiving groove is open.

[0008] By adopting the above technical scheme, when the abalone is cultured, 5-10 cm of sand is laid on the bottom of the culture barrel, and then clean seawater is added for culture. During the culture process, under the action of the three water pumps, the water in the culture barrel is gradually discharged into the sedimentation tank for the sedimentation of large and heavy impurities. After the sedimentation is completed, when the water flows through the spiral transparent disinfection pipe, the ultraviolet disinfection lamp tube sterilizes and disinfects the water flowing through the spiral transparent disinfection pipe by ultraviolet rays, kills the pests and diseases in the water, and then enters the protein separator to separate the small organic impurities in the water, so that the final water purification is completed. After the purification, the water is finally supplemented into each culture barrel after being branched by the water injection pipe.

[0009] When the sand on the bottom of the culture barrel is replaced regularly, first, clean sand is wetted with water and added into the sand adding funnel. The driving motor is started to make the shell rotate around the edge of the culture barrel, and the flexible screw rods in the sand discharging pipe and the sand distributing pipe rotate. The flexible screw rod in the sand discharging pipe rotates to gradually transport the sand in the horizontal section of the sand discharging pipe outward and upward, and finally discharges the sand into the annular sand receiving groove from the discharging pipe. The sand in the sand discharging groove can be collected manually and taken for disinfection and cleaning for the next use.

[0010] Further provided in the application is that the sedimentation tank is divided into a first-stage sedimentation tank and a second-stage sedimentation tank, the sedimentation inlet pipe is located above the first-stage sedimentation tank, and the sedimentation outlet pipe is communicated with the second-stage sedimentation tank.

[0011] Further provided in the application is that a mesh filter tank is arranged above the first-stage sedimentation tank.

[0012] By adopting the technical scheme, the larger floating impurities are filtered out by the mesh filter tank.

[0013] Further, the upper end of each flexible screw is provided with a transmission gear in the shell, and the power output shaft of the driving motor is connected with a driving gear engaging with the two transmission gears in the shell.

[0014] Further, the outer edge of the annular track is provided with a ring-shaped rack, the outer side of the shell is rotatably connected with a walking gear engaging with the ring-shaped rack, the walking gear is connected with a transmission worm in the shell, and the lower end of the driving gear is connected with a driving worm engaging with the transmission worm.

[0015] Further, the bottom of the sand discharge tank is provided with a plurality of drainage holes, the lower end of the sand discharge tank is provided with a water receiving tank, one side of the water receiving tank is connected with a water recovery pipe, the upper side of the sedimentation tank is connected with a water collecting pipe, and the water collecting pipe is connected with all the water recovery pipes.

[0016] Further, the opening of the sand discharge pipe and the sand distribution pipe is outwardly provided with a sand screen cover.

[0017] Further, the bottom of the annular sand receiving tank is downwardly inclined to the direction of the sand discharge tank.

[0018] Further, the middle part of the post-purification water injection pipe is connected with a water supplementing pipe.

[0019] Compared with the prior art, the present application has the following beneficial effects:

[0020] Firstly, the present application can protect the sediment, disinfect by ultraviolet rays and separate protein by water circulation during the cultivation of snails, so as to purify and disinfect the cultivation water, improve the water quality, prevent the snails from getting sick during cultivation, and improve the cultivation yield.

[0021] Secondly, the water circulation cultivation can also increase the oxygen content in the water, and the snails are less likely to suffer from oxygen deficiency during intensive cultivation.

[0022] Thirdly, the present application can replace the sand layer at the bottom of the cultivation barrel during cultivation, slowly discharge sand and add sand, as much as possible to not affect the activity of snails, slowly add sand from the bottom, prevent the sand from causing water turbidity, and replace the sand simply and conveniently, which is helpful for disease and pest control and more conducive to the growth of snails. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a schematic diagram of the overall structure of the present application;

[0024] Figure 2is the overall structure diagram of a single culture barrel;

[0025] Figure 3 for showing the internal structure of the culture barrel;

[0026] Figure 4 for showing the internal structure of the shell.

[0027] In the figure: 1, culture barrel; 11, support shaft; 12, water inlet pipe; 13, water outlet; 14, water outlet pipe; 15, annular track; 16, annular rack; 2, sedimentation tank; 21, primary sedimentation tank; 22, secondary sedimentation tank; 23, mesh filter tank; 24, sedimentation water inlet pipe; 25, first water pump; 26, sedimentation water outlet pipe; 3, protein separator; 31, purification water inlet pipe; 32, second water pump; 33, post-purification water injection pipe; 34, third water pump; 35, water replenishment pipe; 4, spiral transparent disinfection pipe; 41, ultraviolet disinfection lamp; 5, shell; 51, discharge pipe; 52, sand adding funnel; 61, sand discharge pipe; 62, sand distribution pipe; 63, rotating ring; 64, sand transparent screen cover; 65, flexible spiral rod; 66, transmission gear; 7, driving motor; 71, driving gear; 72, driving worm; 8, walking gear; 81, transmission worm; 9, annular sand receiving groove; 91, sand discharge groove; 92, water receiving groove; 93, water recovery pipe; 94, water collecting pipe. DETAILED DESCRIPTION

[0028] The application will be further described below in conjunction with the drawings.

[0029] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0030] In addition, the terms "horizontal", "vertical" and the like do not mean that the components must be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0031] Embodiment, refer to Figures 1-4The utility model provides a kind of spiral class circulating water aquaculture system, including four upper end opening aquaculture barrels 1, a sedimentation tank 2 and a protein separator 3, the center of aquaculture barrel 1 bottom is provided with a support shaft 11 upwards, the upper end of support shaft 11 is provided with a water inlet pipe 12, the side wall of water inlet pipe 12 lower end is opened with multiple water outlets 13, water is replenished in aquaculture barrel 1 from water outlet 13 when circulating, the side wall of aquaculture barrel 1 lower part is communicated with a water outlet pipe 14, sedimentation tank 2 is divided into primary sedimentation tank 21 and secondary sedimentation tank 22, the upper of primary sedimentation tank 21 is provided with a mesh filter groove 23, mesh filter groove 23 can filter out larger floating impurities in water, for filtering larger residue in water, the upper of primary sedimentation tank 21 is communicated with sedimentation water inlet pipe 24, sedimentation water inlet pipe 24 is communicated with all water outlet pipes 14, the middle part of sedimentation water inlet pipe 24 is provided with a first water pump 25, secondary sedimentation tank 22 is communicated with a sedimentation water outlet pipe 26 away from the side of sedimentation water inlet pipe 24.

[0032] The free end of sedimentation water outlet pipe 26 is communicated with a spiral transparent disinfection pipe 4, the middle part of spiral transparent disinfection pipe 4 is provided with a ultraviolet disinfection lamp tube 41, ultraviolet disinfection lamp tube 41 is used to carry out ultraviolet sterilization and disinfection to water flowing through spiral transparent disinfection pipe 4, and kill the pests in water.The free end of spiral transparent disinfection pipe 4 is communicated with a purification water inlet pipe 31, the middle part of purification water inlet pipe 31 is provided with a second water pump 32, the free end of purification water inlet pipe 31 is communicated with the inlet end of protein separator 3, the outlet end of protein separator 3 is communicated with a purified water injection pipe 33, purified water injection pipe 33 is communicated with all water inlet pipes 12, the middle part of purified water injection pipe 33 is provided with a third water pump 34, water is finally purified and disinfected and replenished in each aquaculture barrel 1 through purified water injection pipe 33, the middle part of purified water injection pipe 33 is communicated with a water replenishing pipe 35, water replenishing pipe 35 needs to be opened to replenish water for aquaculture system because of evaporation and other reasons during aquaculture process.

[0033] The open end of the culture barrel 1 is provided with a ring-shaped track 15, and a shell 5 is slidably connected to the ring-shaped track 15. The lower end of the shell 5 is provided with a sand discharging pipe 61 and a sand distributing pipe 62 which are close to each other and both are L-shaped. The vertical sections of the sand discharging pipe 61 and the sand distributing pipe 62 are close to the side wall of the culture barrel 1, and the horizontal sections of the sand discharging pipe 61 and the sand distributing pipe 62 are close to the bottom of the culture barrel 1. The lower end of the supporting shaft 11 is provided with a rotating ring 63 which rotates around the supporting shaft 11. The free ends of the sand discharging pipe 61 and the sand distributing pipe 62 are connected to the rotating ring 63. The side of the horizontal sections of the sand discharging pipe 61 and the sand distributing pipe 62 which are away from each other is provided with an opening, so that the cross section of the horizontal sections of the sand discharging pipe 61 and the sand distributing pipe 62 is semicircular. The opening of the sand discharging pipe 61 and the sand distributing pipe 62 is provided with a sand mesh cover 64 outward. The sand can pass through the sand mesh cover 64 and enter the horizontal sections of the sand discharging pipe 61 and the sand distributing pipe 62, but the snails are discharged outside. The L-shaped flexible screw 65 is rotatably connected in the sand discharging pipe 61 and the sand distributing pipe 62. The flexible screw 65 is flexible and can keep L-shaped in the pipe during rotation, so as to change the direction of conveying.

[0034] A driving motor 7 is mounted on the shell 5 and is used to drive the rotation of the two flexible screws 65. The upper end of each flexible screw 65 is provided with a transmission gear 66 in the shell 5. The power output shaft of the driving motor 7 is connected with a driving gear 71 which is engaged with the two transmission gears 66 in the shell 5. The outer side of the ring-shaped track 15 is provided with a ring-shaped gear rack 16. The outer side of the shell 5 is rotatably connected with a walking gear 8 which is engaged with the ring-shaped gear rack 16. The walking gear 8 is connected with a transmission worm 81 in the shell 5. The lower end of the driving gear 71 is connected with a driving worm 72 which is engaged with the transmission worm 81. One driving motor 7 is connected with the transmission mechanism in the shell 5, so as to drive the rotation of the two flexible screws 65 and the walking gear 8. The transmission ratio of the driving worm 72 and the transmission worm 81 can make the rotation speed of the walking gear 8 much slower than that of the flexible screw 65, so as to slowly rotate around the edge of the culture barrel 1, and the faster rotation of the flexible screw 65 can help to clean the sand at the bottom of the culture barrel 1.

[0035] The upper end of the sand discharging pipe 61 is communicated with a discharging pipe 51 which is inclined downward and outward of the shell 5, and the sand in the bottom of the breeding barrel 1 is finally discharged from the discharging pipe 51. The upper end of the shell 5 is provided with a sand adding funnel 52 which is communicated with the upper end of the sand distributing pipe 62. When the sand is replaced, clean wet sand needs to be continuously added into the sand adding funnel 52 manually. The bottom of the breeding barrel 1 is provided with a ring-shaped sand receiving groove 9 which is used for cooperating with the discharging pipe 51 and is below the annular track 15. One side of the ring-shaped sand receiving groove 9 is communicated with a sand discharging groove 91 which is open at the side away from the ring-shaped sand receiving groove 9. The bottom of the ring-shaped sand receiving groove 9 is inclined downward to the sand discharging groove 91. The bottom of the sand discharging groove 91 is provided with a plurality of water draining holes. The lower end of the sand discharging groove 91 is provided with a water receiving groove 92 which is communicated with a water recycling pipe 93 at one side. The upper end of the first stage sedimentation tank 21 is communicated with a water collecting pipe 94 which is communicated with all the water recycling pipes 93. The water filtered from the discharged sand is finally recycled into the breeding system.

[0036] Working principle: when breeding abalone, 5-10 cm of sand is laid on the bottom of the breeding barrel 1, and then clean seawater is added for breeding. During the breeding process, the water in the breeding barrel 1 is gradually discharged into the sedimentation tank 2 under the action of the three water pumps for the sedimentation of large and heavy impurities. After the sedimentation is completed, the water flows through the spiral transparent disinfection pipe 4, and the ultraviolet disinfection lamp 41 sterilizes and disinfects the water flowing through the spiral transparent disinfection pipe 4 by ultraviolet rays, killing the pests in the water. Subsequently, the water enters the protein separator 3 to separate the small organic impurities in the water, and finally the water is purified. After the purification, the water is finally supplemented into each breeding barrel 1 after being branched by the water injection pipe 33.

[0037] When the sand in the bottom of the breeding barrel 1 is replaced periodically, the clean sand is first wetted with water and added into the sand adding funnel 52. The driving motor 7 is started to drive the shell 5 to rotate around the edge of the breeding barrel 1, and the flexible spiral rod 65 in the sand discharging pipe 61 and the sand distributing pipe 62 rotates. The flexible spiral rod 65 in the sand discharging pipe 61 gradually transports the sand in the horizontal section outward and upward, and finally discharges the sand into the ring-shaped sand receiving groove 9 from the discharging pipe 51. The sand slides along the ring-shaped sand receiving groove 9 into the sand discharging groove 91, and the sand in the sand discharging groove 91 can be collected manually. The sand is taken out for disinfection and cleaning for the next use.

[0038] The specific embodiment is only an explanation of the present application, and is not a limitation of the present application. Those skilled in the art can make modifications to the embodiment without creative contribution after reading the specification, and the modifications are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims

1. A recirculating aquaculture system for spiral shellfish comprising a plurality of open-ended culture buckets (1), a sedimentation tank (2) and a protein separator (3), characterized in that: The center of the bottom of the culture barrel (1) is provided with a support shaft (11), the upper end of the support shaft (11) is provided with a water inlet pipe (12), the side wall of the lower end of the water inlet pipe (12) is provided with a plurality of water outlets (13), the side wall of the lower part of the culture barrel (1) is communicated with a water outlet pipe (14), the upper part of the sedimentation tank (2) is communicated with a sedimentation water inlet pipe (24), the sedimentation water inlet pipe (24) is communicated with all the water outlet pipes (14), the middle part of the sedimentation water inlet pipe (24) is provided with a first water pump (25), the side of the sedimentation tank (2) away from the sedimentation water inlet pipe (24) is communicated with a sedimentation water outlet pipe (26), the free end of the sedimentation water outlet pipe (26) is communicated with a spiral transparent disinfection pipe (4), the middle part of the spiral transparent disinfection pipe (4) is provided with an ultraviolet disinfection lamp (41), the free end of the spiral transparent disinfection pipe (4) is communicated with a purification water inlet pipe (12), the middle part of the purification water inlet pipe (12) is provided with a second water pump (32), the free end of the purification water inlet pipe (12) is communicated with the inlet end of the protein separator (3), the outlet end of the protein separator (3) is communicated with a purified water injection pipe (33), the purified water injection pipe (33) is communicated with all the water inlet pipes (12), the middle part of the purified water injection pipe (33) is provided with a third water pump (34); The open end of the culture barrel (1) is provided with an annular track (15), the annular track (15) is slidably connected with a shell (5), the lower end of the shell (5) is downwardly provided with a sand discharging pipe (61) and a sand distributing pipe (62) which are close to each other and are both L-shaped, the vertical sections of the sand discharging pipe (61) and the sand distributing pipe (62) are both close to the side wall of the culture barrel (1), the horizontal sections of the sand discharging pipe (61) and the sand distributing pipe (62) are both close to the bottom of the culture barrel (1), the lower end of the support shaft (11) is sleeved with a rotating ring (63) which rotates around the support shaft (11), the free ends of the sand discharging pipe (61) and the sand distributing pipe (62) are both connected with the rotating ring (63), the sides of the horizontal sections of the sand discharging pipe (61) and the sand distributing pipe (62) away from each other are both provided with openings, the sand discharging pipe (61) and the sand distributing pipe (62) are both rotatably connected with flexible spiral rods (65) which are L-shaped, the upper end of the shell (5) is provided with a driving motor (7) for driving the rotation of the two flexible spiral rods (65), the upper end of the sand discharging pipe (61) is communicated with a discharging pipe (51) which is outward and obliquely downward, the upper end of the shell (5) is provided with a sand adding funnel (52) which is communicated with the upper end of the sand distributing pipe (62), the culture barrel (1) below the annular track (15) is provided with an annular sand receiving groove (9) for cooperating with the discharging pipe (51), one side of the annular sand receiving groove (9) is communicated with a sand discharging groove (91), the side of the sand discharging groove (91) away from the annular sand receiving groove (9) is open.

2. A spiral type recirculating aquaculture system according to claim 1, characterized in that: The sedimentation tank (2) is divided into a first-stage sedimentation tank (21) and a second-stage sedimentation tank (22), the sedimentation inlet pipe (24) is located above the first-stage sedimentation tank (21), and the sedimentation outlet pipe (26) is communicated with the second-stage sedimentation tank (22).

3. A recirculating aquaculture system according to claim 2, wherein: A mesh filter tank (23) is arranged above the first-stage sedimentation tank (21).

4. A recirculating aquaculture system according to claim 1, wherein: The upper end of each flexible screw (65) is provided with a transmission gear (66) in the shell (5), and the power output shaft of the driving motor (7) is connected with a driving gear (71) engaged with the two transmission gears (66) in the shell (5).

5. A recirculating aquaculture system according to claim 4, wherein: An outer side of the annular track (15) is provided with an annular rack (16), the outer side of the shell (5) is rotatably connected with a walking gear (8) engaged with the annular rack (16), the walking gear (8) is connected with a transmission worm (81) in the shell (5), and the lower end of the driving gear (71) is connected with a driving worm (72) engaged with the transmission worm (81).

6. A recirculating aquaculture system according to claim 1, wherein: A plurality of drainage holes are formed in the bottom of the sand discharge tank (91), the lower end of the sand discharge tank (91) is provided with a water collecting tank (92), one side of the water collecting tank (92) is communicated with a water recovery pipe (93), the upper side of the sedimentation tank (2) is communicated with a water collecting pipe (94), and the water collecting pipe (94) is communicated with all the water recovery pipes (93).

7. A recirculating aquaculture system according to claim 1, wherein: The openings of the sand discharge pipe (61) and the sand distribution pipe (62) are both provided with a sand screen cover (64) outward.

8. A recirculating aquaculture system according to claim 1, wherein: The bottom of the annular sand collecting tank (9) is downwardly inclined to the sand discharge tank (91).

9. A recirculating aquaculture system according to claim 1, wherein: The middle part of the water injection pipe (33) after purification is communicated with a water supplement pipe (35). The middle part of the water injection pipe (33) after purification is communicated with a water supplement pipe (35).

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