CN114365715A

CN114365715A - Cultivation system based on reverse pollution discharge circulation

Info

Publication number: CN114365715A
Application number: CN202210108313.3A
Authority: CN
Inventors: 陈永梅
Original assignee: Anhui Qilin Zhengda Feed Co ltd
Current assignee: Anhui Qilin Zhengda Feed Co ltd
Priority date: 2022-01-28
Filing date: 2022-01-28
Publication date: 2022-04-19

Abstract

The invention discloses a culture system based on reverse sewage circulation, which comprises a pool body, a filtering system arranged in the pool body and a sewage system arranged at the bottom of the pool body, wherein the filtering system is arranged in the pool body; the sewage discharge system comprises a sewage discharge pipeline communicated with the bottom of the tank body, and one end, far away from the bottom of the tank body, of the sewage discharge pipeline is connected with a solid-liquid separation device, so that sludge discharged from the bottom of the tank body passes through the solid-liquid separation device to be subjected to solid-liquid separation. The invention can clean the sludge in the pool body in time, ensures the quality safety of aquatic products, avoids manual high-intensity labor and improves the dredging efficiency.

Description

Cultivation system based on reverse pollution discharge circulation

Technical Field

The invention relates to an aquaculture technology, in particular to a culture system based on reverse blowdown circulation.

Background

In recent years, with the improvement of intensive culture level and intensification degree of ponds, the culture density is higher and higher, and a large amount of sediments such as fish excrement, residual baits and the like deposit at the bottom of the ponds, so that the dissolved oxygen of water is consumed, harmful germs grow, harmful substances such as ammonia nitrogen, nitrite, sulfide and the like are generated, the eutrophication of culture water is caused, diseases of aquatic animals occur frequently, the yield of aquatic products is reduced, the quality safety of the aquatic products cannot be effectively guaranteed, and the like. Aiming at the problem, the existing method is that the boat is manually driven to go to the culture pond, and sludge in the pond body is cleaned, so that the method is low in efficiency and wastes time and labor.

Disclosure of Invention

In order to solve the defects in the prior art, the invention aims to provide the culture system based on the reverse blowdown circulation, the culture system can timely clean sludge in a pond body, the quality safety of aquatic products is ensured, meanwhile, the manual high-intensity labor is avoided, and the dredging efficiency is improved.

The technical scheme adopted by the invention for solving the technical problems is as follows: a cultivation system based on reverse sewage discharge circulation comprises a pool body, a filtering system arranged in the pool body, and a sewage discharge system arranged at the bottom of the pool body;

the sewage discharge system comprises a sewage discharge pipeline communicated with the bottom of the tank body, and one end, far away from the bottom of the tank body, of the sewage discharge pipeline is connected with a solid-liquid separation device, so that sludge discharged from the bottom of the tank body passes through the solid-liquid separation device to be subjected to solid-liquid separation.

Optionally, the solid-liquid separation device comprises a cylinder, one end of the cylinder is provided with a feed inlet, the other end of the cylinder is provided with a discharge outlet, a rotating shaft is installed in the cylinder, and a spiral propelling blade is arranged on the rotating shaft;

the diameter of a circle formed by the rotation of the outer edge of the spiral propelling blade around the axis of the rotating shaft is smaller than the inner diameter of the cylinder;

and a plurality of groups of filter pressing units are arranged on the inner wall of the barrel along the axial direction of the barrel, so that the sludge is matched with the spiral propelling blades through the filter pressing units to complete solid-liquid separation.

Optionally, the filter pressing unit comprises a fixed plate and a movable plate;

the movable plate is arranged between two adjacent fixed plates and is matched with the spiral propelling blade, so that the movable plate can swing back and forth between the two adjacent fixed plates along the radial direction of the barrel.

Optionally, the fixed plate is a circular ring-shaped plate, the outer diameter of the fixed plate is matched with the inner diameter of the cylinder, and the inner diameter of the fixed plate is matched with the diameter of a circle formed when the helical propelling blade rotates, so that the helical propelling blade just passes through the central hole of the fixed plate.

Optionally, the movable plate is a circular ring plate;

the outer diameter of the movable plate is smaller than that of the fixed plate and larger than the inner diameter of the fixed plate;

the inner diameter of the movable plate is smaller than the diameter of a circle formed when the spiral propelling blade rotates and larger than the diameter of the rotating shaft.

Optionally, adjacent two solid fixed ring of fixedly connected with between the fixed plate, gu the external diameter of fixed ring and the internal diameter adaptation of barrel make gu the outer wall of fixed ring is hugged closely the inner wall of barrel, gu fixed ring's both sides respectively with fixed plate fixed connection.

Optionally, a circle of elastic washer is fixedly connected to the side surface of the fixed ring facing the movable plate;

the thickness of the movable plate is matched with the distance between two adjacent fixed plates, so that the movable plate can freely slide between the two fixed plates along the radial direction of the cylinder.

Optionally, one filter pressing unit is installed in each adjacent interval between every two spiral propelling blades;

the barrel slope sets up for the height that highly is higher than the feed inlet of discharge gate, the barrel is close to the one end wall of feed inlet and is equipped with the delivery port.

Optionally, the filtration system is including installing the filter screen in the middle part of the cell body, the top of filter screen is equipped with evenly distributed's protruding net post, protruding net post upwards extends from the top surface of filter screen.

Optionally, the lateral part of cell body is equipped with the overflow subassembly, and the overflow cistern has been seted up to one side of cell body, overflow subassembly intercommunication overflow cistern and cell body.

By adopting the technical scheme, the sludge centralized at the bottom of the tank body can be cleaned through the sewage discharge pipeline embedded at the bottom of the tank body, so that the automation of dredging is realized, the timely cleaning of the sludge can be ensured, the labor intensity of workers is reduced, and the dredging efficiency is improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the connection of the tank body of the present invention to an overflow reservoir;

FIG. 3 is a schematic view of the connection of the trapway of the present invention;

FIG. 4 is a schematic structural view of a solid-liquid separation apparatus of the present invention;

FIG. 5 is a schematic view of the press unit of the present invention.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1, the invention discloses a cultivation system based on reverse sewage discharge circulation, which comprises a tank body 1, wherein an overflow reservoir 2 and a sewage treatment tank 7 are further arranged beside the tank body 1, the overflow reservoir 2 is used for collecting water overflowing from the tank body 1 for recycling, the sewage treatment tank 7 is used for treating sewage, and the sewage is discharged into the overflow reservoir 2 for storage after being treated.

For this purpose, as shown in fig. 2, an overflow pipe 3 is connected between the tank body 1 and the overflow reservoir 2, and the overflow pipe 3 is rotatably connected to a side wall of the overflow reservoir 2. Particularly, be equipped with overflow passageway 4 between cell body 1 and the overflow cistern 2, overflow passageway 4 intercommunication cell body 1 and overflow cistern 2, overflow passageway 4 can locate cell body 1's minimum water level position, and the port of overflow passageway 4 and 2 lateral walls of overflow cistern passes through flange subassembly 5 and is connected with overflow pipe 3, and this flange 5 needs to do sealed the processing. The overflow pipe 3 can adopt an L-shaped pipe or other pipe bodies with two sections, an included angle is formed between the two sections of pipe bodies, and the length of the overflow pipe 3 is larger than the distance from the port of the overflow channel 4 to the top of the pool body 1. Through above-mentioned technical scheme, because flange 5 sets up in pairs and can dismantle each other, consequently, through the inclination who adjusts overflow pipe 3, can adjust the height of the delivery port of overflow pipe 3, and then can realize adjusting the surface of water maximum height of cell body 1.

As shown in fig. 1, the sewage treatment tank 7 includes a foul water tank 8, in which foul water is treated, and a clean water tank 9, in which treated foul water is discharged into the clean water tank 9, and the bottom of the clean water tank 9 is communicated with the overflow reservoir 2, so that treated water in the clean water tank 9 is discharged into the overflow reservoir 2. Specifically, a sewage treatment system, such as an ultrafiltration membrane system, is installed in the sewage tank 8, and sewage is treated by the ultrafiltration membrane system, so that the cleanliness of the treated sewage is improved.

In the invention, a sewage discharge system is arranged at the bottom of the tank body 1.

Specifically, as shown in fig. 2, the sewage system includes a sewage pipeline 6 communicated with the bottom of the tank body 1. One end of the sewage discharge pipeline 6 is laid below the ground and communicated with the bottom of the pool body 1, the other end of the sewage discharge pipeline penetrates out of the ground and is connected with a solid-liquid separation device, sludge sucked from the bottom of the pool body 1 is discharged into the solid-liquid separation device through the sewage discharge pipeline 6 for solid-liquid separation, and after the solid-liquid separation, sewage is discharged into the sewage treatment pool 7 for treatment.

In the invention, as shown in fig. 2, the sewage discharge pipeline 6 specifically comprises a plurality of branch pipes and a main pipe, meanwhile, a plurality of evenly distributed sewage discharge points 10 are arranged at the bottom of the tank body 1, each sewage discharge point is connected with one branch pipe, and each branch pipe is connected with the main pipe. To ensure that sludge is prevented from accumulating during the discharge of sewage, each of the discharge points 10 is formed in a concave shape, or in a funnel shape. In the invention, the sewage discharging points 10 are specifically arranged in three rows, the main pipe is arranged at the position right below the center line of the tank body 1, and in the three rows of sewage discharging points 10, two rows are symmetrical relative to the center line of the bottom of the tank body 1, and the rest rows are arranged along the center line of the bottom of the tank body 1. And the branch pipe connected with the sewage discharge points 10 positioned on the two sides of the central line at the bottom of the tank body 1 is connected with the side part of the main pipe at one end far away from the sewage discharge point 10, and the branch pipe connected with the sewage discharge point 10 positioned on the central line at the bottom of the tank body 1 is connected with the top part of the main pipe at one end far away from the sewage discharge point. In each exhaust spot 10, an electromagnetic control valve is arranged so as to control the on-off of the exhaust spot 10. By adopting the technical scheme, the dirt discharging point 10 is concave or funnel-shaped, so when the dirt discharging point 10 is not communicated, the shape of the dirt discharging point 10 increases the flowing resistance of the sludge, thereby effectively preventing the sludge from generating the phenomenon of suspension swing under the influence of water flow, being beneficial to the accumulation of the sludge and further being convenient for discharging the sludge. In addition, in the present invention, the bottom of the tank body 1 has an inclined slope 12 to facilitate the sludge to flow into the soil discharge point 10.

In the present invention, as shown in fig. 4, the solid-liquid separation apparatus includes a cylindrical body 11, and one end of the cylindrical body 11 has a feed port 13 and the other end has a discharge port 14. The solid-liquid separation device is connected with the sewage discharge pipeline 6 through a sludge suction pump 15. The sludge is discharged from the bottom of the tank body 1 into the feed port 13 of the barrel body 11 under the action of a sludge suction pump 15. A rotary shaft 16 is mounted in the cylinder 11, and a screw blade 17 is provided on the rotary shaft 16. A driving motor 18 is fixedly mounted at one end of the barrel 11 far away from the discharge port 14, and the driving motor 18 is in transmission connection with the rotating shaft 16, so that the rotating shaft 16 is driven to rotate by the driving motor 18. The screw propulsion blades 17 rotate along with the rotation of the rotating shaft 16, and further generate thrust on the sludge to push the sludge to move from the feeding port 13 to the discharging port 14.

During the movement of the sludge, the sludge is pressed by a filter pressing unit arranged in the cylinder 11 to squeeze out moisture in the sludge, when the sludge moves to the position of the discharge port 14, the sludge is pressed into a mud cake and is discharged out of the cylinder 11, and the pressed moisture is discharged out of the cylinder 11 from a water outlet 19 arranged at one end of the cylinder 11 far away from the discharge port 14. Specifically, at one end of the cylinder body provided with the feed port 13, the cylinder body 11 can be divided into a transmission chamber 21 and a filter pressing chamber 22 by a partition plate 20, the feed port 13 is arranged in the filter pressing chamber 22, and the water outlet 19 is arranged at the joint of the partition plate 20 and the cylinder body 11. In addition, the cylinder 11 can be inclined by 5-10 degrees, so that the extruded water can be conveniently distributed to the water outlet 19.

In the invention, the diameter of a circle formed by rotating the outer edge of the spiral propelling blade 17 around the axis of the rotating shaft 16 is smaller than the inner diameter of the cylinder 11, namely, an interval is arranged between the outer edge of the spiral propelling blade 17 and the inner wall of the cylinder 11, and the interval can be 3-5 cm. The filter pressing unit is arranged on the inner wall of the cylinder 11 along the axial direction of the cylinder 11, so that the sludge is matched with the spiral propelling blade 17 through the filter pressing unit to complete solid-liquid separation. In the unit intervals of the spiral propelling blades 17, one filter pressing unit is arranged.

Specifically, as shown in fig. 4 and 5, the press unit comprises a fixed plate 23 and a movable plate 24. The movable plate 24 is provided between the adjacent two fixed plates 23, and the movable plate 24 is engaged with the helical propelling blade 17, so that the movable plate 24 swings back and forth between the adjacent two fixed plates 23 in the radial direction of the cylinder 11. One end of the movable plate 24 close to the spiral propelling blade 17 is a filter pressing head, and in the process of swinging the movable plate 24, the filter pressing head of the movable plate 24 presses the sludge, so that the water is squeezed out. The distribution of the fixing plates 23 is adapted to the inclination direction of the screw propulsion blades 17.

In the present invention, the fixing plate 23 is a circular ring-shaped plate, the outer diameter of the fixing plate 23 is adapted to the inner diameter of the cylinder 11, and the inner diameter of the fixing plate 11 is adapted to the diameter of a circle formed when the screw propulsion blade 17 rotates, so that the screw propulsion blade 17 just passes through the central hole of the fixing plate 23. The movable plate 24 is also a circular ring-shaped plate, the outer diameter of the movable plate 24 is smaller than the outer diameter of the fixed plate 23 and larger than the inner diameter of the fixed plate 23, and the inner diameter of the movable plate 24 is smaller than the diameter of the circle formed when the screw propulsion blades 17 rotate and larger than the diameter of the rotating shaft 16. With this arrangement, during the rotation of the screw propulsion blade 17, the outer edge of the screw propulsion blade 17 applies an outward thrust to the inner side of the movable plate 24, and the side of the movable plate 24 away from the screw propulsion blade 17 moves toward the rotating shaft 16, so as to compress the sludge, and when the screw propulsion blade 17 completes a circle of rotation, the movable plate 24 also compresses the sludge in the circle. The invention adopts the mode, the sludge is extruded in the process of being propelled, and the dehydration efficiency is high. In the prior art, most of the spiral dewatering mechanisms adopt variable-pitch spiral blades to squeeze and dewater sludge, and in the dewatering process, the screw pitch of the spiral blades is smaller and smaller, so that the space capable of containing the sludge is smaller and smaller, and the sludge is easier to block inside the mechanisms.

In the present invention, a fixing ring 25 may be fixedly connected between two adjacent fixing plates 23, an outer diameter of the fixing ring 25 is adapted to an inner diameter of the barrel 11, so that an outer wall of the fixing ring 25 is closely attached to an inner wall of the barrel 11, and both sides of the fixing ring 25 are respectively fixedly connected to the fixing plates 23. Meanwhile, a ring of elastic washer 26 is fixedly attached to a side surface of the fixed ring 25 facing the movable plate 24 so as to generate a restoring force to the movable plate 24 and provide a buffering effect.

In the present invention, the thickness of the movable plate 24 is adapted to the distance between two adjacent fixed plates 23, so that the movable plate 24 freely slides between the two fixed plates 23 in the radial direction of the cylinder 11.

In the invention, as shown in fig. 1 and 2, a filtering system is also arranged in the middle of the tank body 1.

Specifically, filtration system is including installing the filter screen 27 in the middle part of cell body 1, and the top of filter screen 27 is equipped with evenly distributed's protruding net post 28, and protruding net post 28 upwards extends from the top surface of filter screen 27. Through the setting of protruding net post 28, can effectually prevent to be located the phenomenon that the rivers of filter screen 27 below produced the torrent, protruding net post 28 also can prevent that aquatic products seedling is close to filter screen 27 moreover. The mesh of the filter net 27 allows the residual feed, excrement and the like to pass through, whereas the young aquatic products and the feed just sprinkled cannot pass through the filter net 27. Therefore, the filter screen 27 is arranged, so that aquatic products can be effectively prevented from entering the lower part of the filter screen 27, the aquatic products are prevented from entering a sludge storage area, and the healthy growth of the aquatic products is guaranteed.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Other technical features than those described in the specification are known to those skilled in the art, and are not described herein in detail in order to highlight the innovative features of the present invention.

Claims

1. A cultivation system based on reverse blowdown circulation is characterized by comprising a tank body, a filtering system arranged in the tank body and a blowdown system arranged at the bottom of the tank body;

2. The reverse blowdown circulation-based aquaculture system of claim 1, wherein said solid-liquid separation device comprises a cylinder body, one end of said cylinder body is provided with a feed inlet, the other end of said cylinder body is provided with a discharge outlet, a rotating shaft is installed in said cylinder body, and a spiral propelling blade is arranged on said rotating shaft;

3. The reverse blowdown cycle based aquaculture system of claim 2, wherein said filter press unit comprises a fixed plate and a movable plate;

4. The reverse blowdown cycle based aquaculture system of claim 3, wherein the fixing plate is a circular ring shaped plate, the outer diameter of the fixing plate is adapted to the inner diameter of the cylinder, and the inner diameter of the fixing plate is adapted to the diameter of the circle formed when the screw propulsion blades rotate, so that the screw propulsion blades just pass through the central hole of the fixing plate.

5. The reverse blowdown cycle based farming system of claim 4, wherein the movable plate is a circular ring plate;

6. The cultivation system based on the reverse blowdown circulation of claim 5, wherein a fixing ring is fixedly connected between two adjacent fixing plates, the outer diameter of the fixing ring is matched with the inner diameter of the cylinder body, so that the outer wall of the fixing ring is tightly attached to the inner wall of the cylinder body, and two sides of the fixing ring are respectively fixedly connected with the fixing plates.

7. The reverse blowdown cycle-based farming system of claim 6, wherein a ring of elastic washer is fixedly connected to a side of the fixed ring facing the movable plate;

8. The reverse blowdown cycle based aquaculture system of claim 7, wherein one said filter press unit is installed in each adjacent space of two said helical propulsion blades;

9. The reverse blowdown circulation-based aquaculture system of claim 1, wherein the filtration system comprises a filter screen installed in the middle of the tank body, and the top of the filter screen is provided with uniformly distributed convex net pillars extending upwards from the top surface of the filter screen.

10. The reverse blowdown circulation-based aquaculture system of claim 1, wherein the side of the tank body is provided with an overflow assembly, and one side of the tank body is provided with an overflow reservoir, and the overflow assembly is communicated with the overflow reservoir and the tank body.