Breeding sewage precipitation and filtration device

Abstract

The utility model discloses an aquaculture sewage settling and filtering device which comprises a filtering tank, a conical settling tank is arranged at the bottom of the filtering tank, and a sewage outlet is formed in the bottom end of the conical settling tank; a water inlet is formed in the bottom of the filtering tank, a water outlet is formed in the top of the filtering tank, and a conical filter screen assembly is arranged between the water inlet and the water outlet in the filtering tank. The utility model relates to an aquaculture sewage precipitation and filtration device, which belongs to the technical field of aquaculture sewage solid-liquid separation treatment, has good precipitation and filtration effects on aquaculture water, uses a conical filter screen assembly, ensures that solid particles are not easy to accumulate on the conical surface of the conical filter screen assembly, is not easy to block a screen, reduces the cleaning energy consumption, can continuously filter and improves the water filtration efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of solid-liquid separation treatment of aquaculture sewage, and more specifically, it relates to a sedimentation and filtering device for aquaculture sewage. Background Art

[0002] Aquaculture factory farming technology is a modern advanced farming technology that has developed rapidly in my country in recent years. It is characterized by intensive production, resource conservation, quality improvement and efficiency improvement. In the process of factory-scale circulating aquaculture, it is necessary to remove water pollutants in real time. The residual bait and feces in the aquaculture water will enter the solid-liquid separation system through the sewage pipe after leaving the aquaculture pond. The residual bait and feces flow and collide in the pipeline. The longer they stay in the water, the looser these solid wastes will be. A little impact and disturbance can accelerate their rupture and dissolution, thereby reducing the effect of solid precipitation and causing secondary pollution of the water body. Since the wastewater discharged from the aquaculture pond contains a large amount of large particles such as residual bait and feces, it is necessary to remove them as much as possible in the early water treatment unit to reduce the organic load of the subsequent water treatment unit. As the first water treatment unit of the water treatment system, the solid-liquid separation device can not only use centrifugal action and gravity to remove large particles such as residual bait and feces, avoid clogging of the pipelines of the subsequent water treatment units and corrosion of the equipment, but also reduce local head loss and save system energy consumption. Utility Model Content

[0003] The technical problem to be solved by the utility model is to address the deficiencies in the prior art, and the purpose of the utility model is to provide a sedimentation and filtering device for aquaculture wastewater.

[0004] To achieve the above-mentioned purpose, the utility model provides an aquaculture wastewater sedimentation and filtration device, including a filter tank, a conical sedimentation tank is provided at the bottom of the filter tank, and a sewage outlet is provided at the bottom end of the conical sedimentation tank; a water inlet is provided at the bottom of the filter tank, a water outlet is provided at the top of the filter tank, and a conical filter screen assembly is provided in the filter tank between the water inlet and the water outlet.

[0005] Furthermore, a plurality of evenly arranged backwash nozzles are provided on the top of the inner wall of the filter tank.

[0006] Furthermore, the inclination angle of the wall of the conical sedimentation tank is 45°-60°.

[0007] As a further improvement, a first annular plate is provided on the upper portion of the inner wall of the filter tank, and the bottom of the conical filter assembly is detachably mounted on the first annular plate by bolts.

[0008] Furthermore, the conical filter assembly includes a first conical filter, a second conical filter and a third conical filter, the second conical filter is sleeved on the first conical filter, the third conical filter is sleeved on the second conical filter, the mesh size of the first conical filter is larger than the mesh size of the second conical filter, the mesh size of the second conical filter is larger than the mesh size of the third conical filter, and the bottom ends of the first conical filter, the second conical filter and the third conical filter are all provided with a convex edge connected to the first annular plate.

[0009] Furthermore, a filter cloth is provided between the third conical filter screen and the second conical filter screen.

[0010] As a further improvement, a second annular plate is provided at the bottom of the inner wall of the filter tank, a water hole is provided on the second annular plate, a conical buffer tank is installed on the second annular plate, a guide spiral plate extending spirally upward is provided on the inner wall of the conical buffer tank, the bottom end of the conical buffer tank is opened, and the water inlet is connected to a water inlet pipe extending to the inner wall of the conical buffer tank.

[0011] Furthermore, the water inlet pipe is inserted from the tangent direction of the inner wall of the conical buffer tank.

[0012] Furthermore, the second annular plate is provided with pebble filter material.

[0013] The beneficial effects of the utility model are:

[0014] (1) The aquaculture wastewater sedimentation and filtration device of the utility model has good sedimentation and filtration effects on aquaculture water. The conical filter assembly is used, and solid particles are not easy to accumulate on the conical surface of the conical filter assembly, and are not easy to clog the screen, thereby reducing the energy consumption of cleaning, and can filter continuously, thereby improving the water filtration efficiency;

[0015] (2) The aquaculture sewage sedimentation and filtration device of the utility model is provided with three layers of filter screens, and after three filtrations, the particles in the sewage are effectively filtered step by step, with good filtering effect and good anti-clogging effect;

[0016] (3) The aquaculture wastewater sedimentation and filtration device of the utility model is provided with a conical buffer tank to block and rectify the incoming sewage, thereby preventing the sewage from directly impacting the sediment in the conical sedimentation tank, reducing the disturbance of the sediment in the conical sedimentation tank caused by the sewage entering the conical sedimentation tank, thereby reducing the upward floating of the sediment particles and helping the sludge to settle in the conical sedimentation tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the following will briefly introduce the drawings required for the description of the embodiment. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0018] Figure 1 This is a structural stereogram of the aquaculture wastewater sedimentation and filtration device of the utility model;

[0019] Figure 2 This is a structural cross-sectional view of the aquaculture wastewater sedimentation and filtration device of the utility model;

[0020] Figure 3 It is a top view of the structure of the aquaculture wastewater sedimentation and filtration device of the utility model;

[0021] Figure 4 This is a schematic diagram of the internal structure of the aquaculture wastewater sedimentation and filtration device of the utility model after adding a conical buffer tank;

[0022] Figure 5 This is an enlarged top view of the structure of the conical buffer tank and the water inlet pipe in the utility model;

[0023] Figure 6 for Figure 4 A schematic diagram of the enlarged structure at point A in the middle.

[0024] Among them: 1. Filter tank; 2. Conical sedimentation tank; 3. Drain port; 4. Water inlet; 5. Water outlet; 6. Conical filter assembly; 7. Backwash nozzle; 8. First annular plate; 9. First conical filter; 10. Second conical filter; 11. Third conical filter; 12. Filter cloth; 13. Second annular plate; 14. Conical buffer tank; 15. Guide spiral plate; 16. Water inlet pipe; 17. Pebble filter material; 18. Support foot. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. The following is an explanation of the embodiments of the utility model based on its overall structure.

[0026] The specific implementation of the utility model is as follows:

[0027] See also Figure 1-Figure 6The utility model is a kind of aquaculture wastewater sedimentation and filtration device, including a filter tank 1, the bottom of the filter tank 1 is provided with a supporting foot 18, the bottom of the filter tank 1 is provided with a conical sedimentation tank 2, the bottom end of the conical sedimentation tank 2 is provided with a sewage outlet 3; the bottom of the filter tank 1 is provided with a water inlet 4, the top of the filter tank 1 is provided with a water outlet 5, and a conical filter assembly 6 is provided between the water inlet 4 and the water outlet 5 in the filter tank 1.

[0028] In the aquaculture sewage sedimentation and filtration device, sewage enters the filter tank 1 from the water inlet 4, and will be precipitated in the conical sedimentation tank 2 below, and the insoluble matter such as fixed particles will be precipitated into the conical sedimentation tank 2, and then the upper water will be filtered through the conical filter assembly 6 to filter out the particles, and the filtered clean water will be discharged from the water outlet 5; the precipitated sludge in the conical sedimentation tank 2 can be discharged from the sewage outlet 3 regularly, and a discharger is set at the sewage pipe of the sewage outlet 3 to discharge sewage to avoid clogging. The aquaculture sewage sedimentation and filtration device of the utility model uses a conical filter assembly 6, and solid particles are not easy to accumulate on the conical surface of the conical filter assembly 6, and are not easy to clog the screen, which reduces the cleaning energy consumption, can filter continuously, and improves the water filtration efficiency.

[0029] In this embodiment, a plurality of evenly arranged backwash nozzles 7 are provided on the top of the inner wall of the filter tank 1. The water spraying direction of the backwash nozzles 7 is perpendicular to the conical surface of the conical filter assembly 6. The backwash nozzles 7 are connected to an external water pump and a clean water tank through a water pipe. The backwash nozzles 7 spray water toward the upper surface of the conical filter assembly 6 to flush down the particles blocked in the mesh of the conical filter assembly 6.

[0030] In this embodiment, the inclination angle of the conical sedimentation tank 2 is 45°-60°, and the wall of the conical sedimentation tank 2 is set to 60°. The 60° cone surface is the best design for collecting dirt and preventing clogging. Even when the most sludge is precipitated, it is not easy to cause clogging.

[0031] In this embodiment, a first annular plate 8 is provided on the upper portion of the inner wall of the filter tank 1, and the bottom of the conical filter assembly 6 is detachably mounted on the first annular plate 8 by bolts. The conical filter assembly 6 is easy to disassemble and assemble, and is convenient for later maintenance.

[0032] In this embodiment, the conical filter assembly 6 includes a first conical filter 9, a second conical filter 10 and a third conical filter 11. The second conical filter 10 is sleeved on the first conical filter 9, and the third conical filter 11 is sleeved on the second conical filter 10. The mesh of the first conical filter 9 is larger than the mesh of the second conical filter 10, and the second conical filter 10 is larger than the mesh of the third conical filter 11. The bottom ends of the first conical filter 9, the second conical filter 10 and the third conical filter 11 are all provided with a convex edge connected to the first annular plate 8.

[0033] By setting up three layers of filter screens and filtering three times, the particles in the sewage can be effectively filtered step by step, with good filtering effect and good anti-clogging effect; moreover, the three filter screens are easy to install, and through holes are provided on the convex edges. The convex edges at the bottom of the three filter screens are fixedly connected to the first annular plate 8 through bolts and the through holes, and are positioned through bolts and the through holes to form gaps between the three filter screens.

[0034] In this embodiment, a filter cloth 12 is provided between the third conical filter screen 11 and the second conical filter screen 10, and activated carbon is provided between the second conical filter screen 10 and the first conical filter screen 9. The gap between the filter screens can be provided with filter cloth and activated carbon to further filter the sewage, and the filtering effect is good. Moreover, the filter cloth and activated carbon are easy to install and arrange.

[0035] In this embodiment, a second annular plate 13 is provided at the bottom of the inner wall of the filter tank 1, a water hole is provided on the second annular plate 13, a conical buffer tank 14 is installed on the second annular plate, a guide spiral plate 15 is provided on the inner wall of the conical buffer tank 14, a bottom end of the conical buffer tank 14 is provided with an opening, and a water inlet pipe 16 extending to the inner wall of the conical buffer tank 14 is connected to the water inlet 4. Sewage enters the water inlet pipe 16 from the water inlet 4, and then enters the conical buffer tank 14 from the water inlet pipe 16. The sewage flow impacts the guide spiral plate 15, and the flow rate and impact force will be slowed down. After being rectified by the guide spiral plate 15, the sewage will drip downward into the conical sedimentation tank 2 under the action of gravity, thereby reducing the disturbance of the sediment in the conical sedimentation tank 2 caused by the sewage entering the conical sedimentation tank 2, thereby reducing the floating of the sediment particles upward, and helping the sludge to settle in the conical sedimentation tank 2.

[0036] In this embodiment, the water inlet pipe 16 is inserted from the tangential direction of the inner wall of the conical buffer tank 14 , and the outlet direction of the water inlet pipe 16 is aligned with the spiral surface of the guide spiral plate 15 , and the water flows upward through the guide of the guide spiral plate 15 .

[0037] In this embodiment, a pebble filter material 17 is provided on the second annular plate 13. The pebble filter material 17 can perform preliminary filtration on the sewage and prevent the suspended matter in the conical sedimentation tank 2 from floating upward to the conical filter assembly 6, thereby preventing large particles of suspended matter from clogging the mesh of the conical filter assembly 6.

[0038] The foregoing descriptions of specific exemplary embodiments of the present invention are for the purpose of explanation and illustration. These descriptions are not intended to limit the present invention to the precise form disclosed, and it is obvious that many changes and variations can be made based on the above teachings. Although an embodiment of the present invention has been shown and described, this specific embodiment is only an explanation of the present invention and is not a limitation of the present invention. The specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art can make modifications, substitutions, variations and various selections and changes to the embodiments without creative contribution as needed after reading this specification without departing from the principles and purpose of the present invention, but they are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A sedimentation and filtration device for aquaculture wastewater, characterized in that: The invention comprises a filter tank (1), wherein a conical sedimentation tank (2) is provided at the bottom of the filter tank (1), and a sewage outlet (3) is provided at the bottom end of the conical sedimentation tank (2); a water inlet (4) is provided at the bottom of the filter tank (1), and a water outlet (5) is provided at the top of the filter tank (1); and a conical filter screen assembly (6) is provided in the filter tank (1) between the water inlet (4) and the water outlet (5).

2. A aquaculture wastewater sedimentation and filtration device according to claim 1, characterized in that: A plurality of evenly arranged backwashing nozzles (7) are provided on the top of the inner wall of the filter tank (1).

3. A aquaculture wastewater sedimentation and filtration device according to claim 1, characterized in that: The inclination angle of the wall of the conical sedimentation tank (2) is 45°-60°.

4. The aquaculture wastewater sedimentation and filtration device according to claim 1, characterized in that: A first annular plate (8) is provided on the upper portion of the inner wall of the filter tank (1), and the bottom of the conical filter assembly (6) is detachably mounted on the first annular plate (8) by means of bolts.

5. A aquaculture wastewater sedimentation and filtration device according to claim 4, characterized in that: The conical filter assembly (6) comprises a first conical filter (9), a second conical filter (10) and a third conical filter (11); the second conical filter (10) is sleeved on the first conical filter (9); the third conical filter (11) is sleeved on the second conical filter (10); the mesh size of the first conical filter (9) is larger than the mesh size of the second conical filter (10); the mesh size of the second conical filter (10) is larger than the mesh size of the third conical filter (11); and the bottom ends of the first conical filter (9), the second conical filter (10) and the third conical filter (11) are all provided with a convex edge connected to the first annular plate (8).

6. A aquaculture wastewater sedimentation and filtration device according to claim 5, characterized in that: A filter cloth (12) is provided between the third conical filter screen (11) and the second conical filter screen (10).

7. The aquaculture wastewater sedimentation and filtration device according to claim 1, characterized in that: A second annular plate (13) is provided at the bottom of the inner wall of the filter tank (1), a water hole is provided on the second annular plate (13), a conical buffer tank (14) is installed on the second annular plate, a guide spiral plate (15) is provided on the inner wall of the conical buffer tank (14) and is spirally extended upward, the bottom end of the conical buffer tank (14) is opened, and the water inlet (4) is connected to a water inlet pipe (16) provided on the inner wall of the conical buffer tank (14) and extending to the inner wall.

8. The aquaculture wastewater sedimentation and filtration device according to claim 7, characterized in that: The water inlet pipe (16) is inserted from the tangent direction of the inner wall of the conical buffer tank (14).

9. The aquaculture wastewater sedimentation and filtration device according to claim 7, characterized in that: The second annular plate (13) is provided with pebble filter material (17).

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