A sewage discharge and shrimp shell collection device for shrimp farming with anti-clogging function

Abstract

This invention discloses a sewage discharge and shrimp shell collection device for shrimp farming with anti-clogging function, relating to the technical field of shrimp farming equipment. It includes a farming pond with a sewage outlet at the bottom, and a bridging mechanism and a collection mechanism installed at the corresponding location of the sewage outlet within the pond. The collection mechanism is used to collect sewage and shrimp shells. This invention, by setting up a bridging mechanism, utilizes a three-layer bridging tooth assembly pre-embedded inside the bridging structure to rotate synchronously with the rotating shaft, progressively disrupting the mechanical stability of the bridging structure from the top, middle, and bottom layers. This breaks down the complete arched bridging structure into small shrimp shell clusters that cannot form stable overlaps, achieving the effect of completely dismantling the dynamic bridging structure of the shrimp shells. This ensures the continuous and unobstructed operation of the sewage discharge system during the concentrated molting period of shrimp, significantly improving shrimp shell collection efficiency.

Description

Technical Field

[0001] This invention relates to the field of shrimp farming equipment technology, and in particular to a sewage discharge and shrimp shell collection device for shrimp farming with anti-clogging function. Background Technology

[0002] Shrimp farming continuously generates solid waste such as uneaten feed, feces, and molted shells. Timely removal of this waste and recycling of economically valuable shells are crucial for ensuring water quality and improving overall farming efficiency. However, existing wastewater and shell collection devices for shrimp farming still have the following shortcomings: During the concentrated molting period of shrimp, the numerous thin, sheet-like shrimp shells produced form a dynamic arched bridging structure above the sewage outlet under the suction of the water flow. This structure is self-stabilizing, allowing wastewater and fine impurities below to drain through the gaps, but it continuously intercepts subsequent shrimp shells, eventually completely clogging the sewage outlet.

[0003] Existing anti-clogging structures using stirring methods break up the bridging through external impact. However, the broken shrimp shells retain a large, sheet-like shape and quickly reform into new bridging structures at other locations near the discharge outlet under the influence of water flow. Backwashing structures, on the other hand, use reverse water flow to impact the bridging, which washes the shrimp shells back into the aquaculture pond, failing to address the root cause and causing already collected shells to be lost again. This clogging problem leads to frequent failures of the sewage system during the peak molting period for shrimp, significantly reducing sewage efficiency and shrimp shell collection rates. Long-term accumulation of waste at the bottom of the pond breeds harmful bacteria such as Vibrio, deteriorating the aquatic environment and significantly increasing shrimp morbidity and mortality. Summary of the Invention

[0004] The purpose of this application is to provide a sewage discharge and shrimp shell collection device for shrimp farming with anti-clogging function, which can effectively solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this application provides the following technical solution: a sewage discharge and shrimp shell collection device for shrimp farming with anti-clogging function, comprising a farming pond with a sewage outlet at the bottom, wherein a bridge-breaking mechanism and a collection mechanism are provided in the farming pond at the location corresponding to the sewage outlet; the collection mechanism is used to collect sewage and shrimp shells; the bridge-breaking mechanism includes: Fixed base, installed inside the aquaculture pond; A rotating shaft is connected to a fixed base via bearings that rotate around its axis. The motor is mounted on a fixed base, and the output end of the motor is coaxially connected to the rotating shaft; And a bridge-breaking tooth assembly, which is installed on the motor; when the motor drives the rotating shaft to rotate, it allows the bridge-breaking tooth assembly to break the bridging structure formed by the shrimp shell during sewage discharge; the bridge-breaking tooth assembly includes multiple upper bridge-breaking teeth, middle bridge-breaking teeth and lower bridge-breaking teeth arranged sequentially from top to bottom on the rotating shaft.

[0006] Preferably, a spiral guide vane is coaxially arranged on the rotating shaft, and one end of the spiral guide vane is inserted into the drain outlet.

[0007] Preferably: a plurality of upper bridge teeth are equally spaced around the rotation axis; the tips of the upper bridge teeth are inclined upward and all tips are located on the same horizontal plane; a plurality of middle bridge teeth are equally spaced around the rotation axis; a plurality of middle bridge teeth are staggered with the upper bridge teeth; the tips of the middle bridge teeth are kept horizontal and all tips are located on the same horizontal plane; a plurality of lower bridge teeth are equally spaced around the rotation axis; a plurality of lower bridge teeth are staggered with the middle bridge teeth; the tips of the lower bridge teeth are inclined downward and all tips are located on the same horizontal plane.

[0008] Preferably, the collection mechanism includes a collection hood and a negative pressure connecting pipe; the collection hood is coaxially sleeved on the rotating shaft, the bottom of the collection hood is fixed to the aquaculture pond via a flange, and the top of the collection hood is coaxially connected to a fixed base; the top of the collection hood forms an annular negative pressure chamber; multiple guide holes are opened around the circumference of the top inner wall of the collection hood, and the guide holes are inclined downwards, and the inner wall of the collection hood communicates with the annular negative pressure chamber through the guide holes; a negative pressure pump is provided on one side of the aquaculture pond, and the input end of the negative pressure pump is connected to the annular negative pressure chamber through the negative pressure connecting pipe; the negative pressure formed in the annular negative pressure chamber by the negative pressure pump is less than the water pressure in the collection hood; an annular inlet is opened around the circumference of the fixed base, and the water in the aquaculture pond communicates with the inside of the collection hood through the annular inlet, and the radius of the annular inlet is twice the distance from the annular inlet to the bottom of the aquaculture pond.

[0009] Preferably, the negative pressure connecting pipe is equipped with an electric flow regulating valve.

[0010] Preferably, the collection hood has an inverted conical structure, and the bottom diameter of the collection hood is adapted to the sewage outlet.

[0011] Preferably, the fixed base and the collecting cover are connected by a threaded screw, and the annular negative pressure cavity is formed between the fixed base and the collecting cover; a rubber sealing ring is provided between the fixed base and the collecting cover.

[0012] Preferably, the bottom of the aquaculture pond is equipped with a solid-liquid separator that is connected to the sewage outlet; the solid-liquid separator has a built-in filter screen and is used to filter and collect shrimp shells.

[0013] Preferably, the collection hood is provided with a flow regulation mechanism; the flow regulation mechanism is used to control the bridge breaking speed of the bridge breaking mechanism and the negative pressure intensity of the collection mechanism by detecting the shrimp shell concentration inside the collection hood.

[0014] Preferably, the flow regulation mechanism includes an ultrasonic concentration sensor, a waterproof junction box, a waterproof PLC controller, and a DC power supply module; the ultrasonic concentration sensor is located inside the collection hood near the top, and is tilted downwards; the waterproof junction box is located on the side wall of the collection hood, and both the waterproof PLC controller and the DC power supply module are located inside the waterproof junction box; the DC power supply module and the waterproof PLC controller are electrically connected; the ultrasonic concentration sensor, the motor, the negative pressure pump, and the waterproof PLC controller are all connected via signal control.

[0015] In summary, the technical effects and advantages of this invention are as follows: 1. This invention, by setting up a bridge-breaking mechanism, utilizes a three-layer bridge-breaking tooth assembly pre-embedded inside the bridge structure to rotate synchronously with the rotating shaft, thereby destroying the mechanical stability of the bridge layer by layer from the top, middle and bottom, decomposing the complete arch bridge into small shrimp shell clusters that cannot form stable overlaps, achieving the effect of completely disintegrating the dynamic bridge structure of shrimp shells, ensuring the continuous and smooth operation of the sewage system during the concentrated molting period of shrimp, and greatly improving the shrimp shell collection efficiency.

[0016] 2. This invention uses an inverted conical collection hood and an annular negative pressure chamber. A negative pressure pump creates a stable negative pressure in the annular negative pressure chamber. Multiple downward-sloping guide holes create a centripetal and downward composite water flow field inside the collection hood, causing shrimp shells to slide directionally along the inner wall of the collection hood to the sewage outlet. This achieves efficient collection of shrimp shells, realizes tangential adsorption to prevent clogging of the guide holes, and ensures that sewage at the bottom of the pond is preferentially drawn in, reducing the mixing of upper clear water and reducing the amount of sewage discharge and water exchange.

[0017] 3. This invention, by setting up a flow regulation mechanism, uses an ultrasonic concentration sensor to detect the shrimp shell concentration in the collection hood in real time, and synchronously adjusts the motor speed and negative pressure pump power through a waterproof PLC controller to achieve adaptive matching for different aquaculture conditions. This achieves a balance between low energy consumption during non-molting periods and high anti-clogging capability during concentrated molting periods, reducing the energy consumption of the device and the need for manual intervention. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a first-view perspective three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the overall second-view three-dimensional structure of the present invention; Figure 3 This is a partial cross-sectional three-dimensional structural diagram of the aquaculture pond of the present invention; Figure 4 This is a first-view magnified three-dimensional structural diagram of the bridge-breaking mechanism and the collection mechanism of the present invention; Figure 5 This is a magnified three-dimensional structural diagram of the bridge-breaking mechanism and the collection mechanism of the present invention from a second perspective. Figure 6 This is a three-dimensional magnified structural diagram of the bridge-breaking tooth assembly of the present invention from a first perspective; Figure 7 This is a three-dimensional magnified structural diagram of the bridge-breaking tooth assembly of the present invention from a second perspective; Figure 8 This is a three-dimensional enlarged structural diagram of the fixing base of the present invention; Figure 9 This is a partially cross-sectional, three-dimensional magnified structural diagram of the collection cover of the present invention; Figure 10 For the present invention Figure 9 A magnified structural diagram of region A in the middle.

[0020] In the diagram: 1. Aquaculture pond; 2. Sewage outlet; 3. Bridge breaking mechanism; 31. Fixed base; 32. Rotating shaft; 33. Motor; 34. Bridge breaking gear assembly; 341. Upper bridge breaking gear; 342. Middle bridge breaking gear; 343. Lower bridge breaking gear; 35. Spiral guide vane; 4. Collection mechanism; 41. Collection cover; 42. Annular negative pressure chamber; 43. Guide hole; 44. Negative pressure connecting pipe; 45. Electric flow regulating valve; 46. Annular inlet; 5. Flow regulating mechanism; 51. Ultrasonic concentration sensor; 52. Waterproof junction box; 53. Waterproof PLC controller; 54. DC power supply module. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example 1: Please refer to Figures 1-6The device shown is a sewage discharge and shrimp shell collection device for shrimp farming with anti-clogging function. It includes a farming pond 1 with a sewage outlet 2 at the bottom. A bridge breaking mechanism 3 and a collection mechanism 4 are provided in the farming pond 1 at the position corresponding to the sewage outlet 2. The collection mechanism 4 is used to collect sewage and shrimp shells. The bridge breaking mechanism 3 includes: a fixed base 31, a rotating shaft 32, a motor 33, and a bridge breaking tooth assembly 34. The fixed base 31 is located in the farming pond 1. The rotating shaft 32 is rotatably connected to the fixed base 31 around its axis through a bearing. The motor 33 is installed on the fixed base 31, and the output end of the motor 33 is coaxially connected to the rotating shaft 32. The bridge breaking tooth assembly 34 is located on the motor 33. When the motor 33 drives the rotating shaft 32 to rotate, it allows the bridge breaking tooth assembly 34 to break the bridging structure formed by the shrimp shells during sewage discharge. The bridge breaking tooth assembly 34 includes multiple upper bridge breaking teeth 341, middle bridge breaking teeth 342, and lower bridge breaking teeth 343 arranged sequentially from top to bottom on the rotating shaft 32.

[0023] It should be noted that when this anti-clogging shrimp farming sewage discharge and shrimp shell collection device is in use, the sewage and shrimp shells at the bottom of the farming pond 1 converge towards the sewage outlet 2 under negative pressure. When the shrimp shells form a bridging structure above the sewage outlet 2, the motor 33 drives the rotating shaft 32 to rotate around its axis, which in turn drives the bridge-breaking tooth assembly 34 to rotate synchronously. The bridge-breaking tooth assembly 34 is pre-embedded in the internal space of the bridging structure. Through rotational motion, it gradually destroys the mechanical stability of the bridging from the inside, decomposing the complete arched bridging into multiple small shrimp shell clusters. The collection mechanism 4 simultaneously collects the decomposed shrimp shell clusters and sewage and transports them to the sewage outlet 2 for discharge.

[0024] The internal bridging method replaces the traditional external impact bridging method, destroying the bridging structure from its weakest point. This requires less energy and avoids the problem of shrimp shells rebuilding after being dispersed by the traditional stirring structure. It also solves the defect of the backwashing structure that washes shrimp shells back into the aquaculture pond, causing shrimp shell loss. This fundamentally improves the anti-clogging ability of the sewage system and the shrimp shell collection efficiency.

[0025] See Figures 3-5 A spiral guide vane 35 is coaxially arranged on the rotating shaft 32, and one end of the spiral guide vane 35 is inserted into the drain outlet 2.

[0026] It should be noted that when the rotating shaft 32 rotates, it drives the spiral guide blade 35 to rotate synchronously. One end of the spiral guide blade 35 is inserted into the drain outlet 2. During the rotation, a downward axial water flow thrust is generated, which pushes the shrimp shell mass decomposed by the bridge breaking tooth assembly 34 into the drain outlet 2. At the same time, the rotating water flow generated by the spiral guide blade 35 can flush the inner wall of the drain outlet 2 and prevent small impurities from accumulating at the edge of the drain outlet 2.

[0027] The spiral guide vane 35 can accurately deliver the broken shrimp shell mass into the drain outlet 2, preventing the shrimp shell mass from lingering around the drain outlet 2, further reducing the risk of re-bridging. At the same time, the flushing effect it generates can keep the drain outlet 2 unobstructed, extending the continuous unblocked operation time of the device.

[0028] See Figures 6-7 Multiple upper bridge teeth 341 are equally spaced around the rotating shaft 32; the tips of the upper bridge teeth 341 are inclined upwards and all tips are located on the same horizontal plane; multiple middle bridge teeth 342 are equally spaced around the rotating shaft 32; the multiple middle bridge teeth 342 are staggered with the upper bridge teeth 341; the tips of the middle bridge teeth 342 are kept horizontal and all tips are located on the same horizontal plane; multiple lower bridge teeth 343 are equally spaced around the rotating shaft 32; the multiple lower bridge teeth 343 are staggered with the middle bridge teeth 342; the tips of the lower bridge teeth 343 are inclined downwards and all tips are located on the same horizontal plane.

[0029] It should be noted that when the rotating shaft 32 rotates, multiple upper bridge-breaking teeth 341 first contact the top arched area of ​​the bridge structure, and the upward-inclined tooth tips cut into the weak point of the arch, destroying the upper support of the bridge. Subsequently, multiple middle bridge-breaking teeth 342 horizontally cut into the middle support area of ​​the bridge, cutting off the longitudinal support beam and decomposing the bridge into multiple independent small pieces. Finally, multiple lower bridge-breaking teeth 343 inclined downward and cut into the bottom foundation of the bridge, severing the connection between the bridge and the edge of the sewage outlet 2. The three layers of bridge-breaking teeth are arranged in an alternating manner, which can cover the entire bridge space without any dead corners.

[0030] The three layers of upper bridge-breaking teeth 341, middle bridge-breaking teeth 342, and lower bridge-breaking teeth 343, at different angles, respectively destroy different parts of the bridging structure. Their synergistic effect achieves a thorough bridge-breaking effect. The size of the decomposed shrimp shell mass is smaller than the minimum size required to form a stable bridge, thus eliminating the possibility of re-bridging from a size perspective. The staggered arrangement design ensures the comprehensiveness of bridge breaking and avoids bridge regeneration caused by local residues.

[0031] See Figures 3-5The collection mechanism 4 includes a collection hood 41 and a negative pressure connecting pipe 44. The collection hood 41 has an inverted conical structure, and the bottom diameter of the collection hood 41 is adapted to the sewage outlet 2. The collection hood 41 is coaxially sleeved on the rotating shaft 32, and the bottom of the collection hood 41 is fixed to the breeding pond 1 by a flange. The top of the collection hood 41 is coaxially connected to the fixing seat 31. The top of the collection hood 41 forms an annular negative pressure chamber 42. The inner wall of the top of the collection hood 41 is provided with multiple guide holes 43 around its circumference, and the guide holes 43 are inclined downward. The inner wall of the collection hood 41 is connected to the annular negative pressure chamber 42 through the guide holes 43. The annular negative pressure chamber 42 is connected; a negative pressure pump is installed on one side of the aquaculture pond 1, and the input end of the negative pressure pump is connected to the annular negative pressure chamber 42 through the negative pressure connecting pipe 44; the negative pressure formed in the annular negative pressure chamber 42 by the negative pressure pump is less than the water pressure in the collection hood 41; an annular inlet 46 is opened around the periphery of the fixed base 31, and the water in the aquaculture pond 1 is connected to the inside of the collection hood 41 through the annular inlet 46, and the radius of the annular inlet 46 is twice the distance from the annular inlet 46 to the bottom of the aquaculture pond 1; an electric flow regulating valve 45 is installed on the negative pressure connecting pipe 44.

[0032] It should be noted that the negative pressure pump forms a stable negative pressure in the annular negative pressure chamber 42 through the negative pressure connecting pipe 44. The negative pressure acts on the inside of the collection hood 41 through multiple downwardly inclined guide holes 43, forming a centripetal and downward composite water flow field. The water in the aquaculture pond 1 enters the inside of the collection hood 41 through the annular inlet 46 on the fixed seat 31. Under the action of the composite water flow field, the shrimp shells are adsorbed onto the inner wall of the collection hood 41 and slide down the inner wall into the sewage outlet 2. The electric flow regulating valve 45 can adjust the opening of the negative pressure connecting pipe 44, thereby controlling the negative pressure intensity in the annular negative pressure chamber 42. It is understandable that the negative pressure acts on the inside of the collection hood 41 through the downward-sloping guide hole 43, forming a centripetal and downward composite water flow field. Essentially, this is the result of the combined effect of the momentum transfer effect of the high-pressure fluid and the vector superposition effect of the multi-source symmetrical flow field. The low-pressure environment inside the annular negative pressure chamber 42 and the relatively high-pressure environment inside the collection hood 41 form a stable pressure difference, driving air to flow at high speed along the guide hole 43. The high-speed airflow transfers momentum to the surrounding water body through viscous force, causing the water body to flow along the axial direction of the guide hole 43. The independent flow fields generated by multiple guide holes 43 evenly distributed along the circumference are vector-superimposed in the space inside the collection hood 41, ultimately forming a centripetal and downward composite water flow field covering the entire collection space. Specifically, it is divided into the following stages: Stage 1: Independent flow field formation stage. After the negative pressure pump starts, a stable negative pressure is quickly formed in the annular negative pressure chamber 42, and multiple guide holes 43 start working simultaneously. An independent conical flow field is formed at the outlet of each guide hole 43. At this time, the flow fields are independent of each other and have not yet superimposed. There is an obvious region of non-uniform flow velocity inside the collection hood 41. Stage 2: Flow field superposition and fusion stage. As each conical flow field continues to expand, the edges of adjacent flow fields begin to contact each other and superimpose. Since the tilt angle and direction of all guide holes 43 are exactly the same, the radial component of each flow field points to the central axis of the collection hood 41, and the axial component is perpendicular to the downward direction. In the superposition region, the radial components reinforce each other, the axial components also reinforce each other, while the tangential components cancel each other out. Stage 3: Stable composite flow field formation stage. When all flow fields are completely fused, a stable and uniform composite water flow field is formed inside the collection hood 41.

[0033] The inverted cone-shaped collection hood 41 can collect scattered shrimp shells. The downward-sloping guide hole 43 achieves tangential adsorption, effectively preventing shrimp shells from clogging the guide hole 43. The size design of the annular inlet 46 ensures priority suction of sewage from the bottom of the pool, reduces the mixing of upper clear water, and reduces the amount of sewage discharge and water exchange. The electric flow regulating valve 45 allows the negative pressure intensity to be adjusted according to the actual working conditions, improving the adaptability of the device.

[0034] See Figures 4-5 The fixed seat 31 and the collection cover 41 are connected by a threaded screw, and the annular negative pressure cavity 42 is formed between the fixed seat 31 and the collection cover 41; a rubber sealing ring is provided between the fixed seat 31 and the collection cover 41.

[0035] It should be noted that the fixed base 31 and the collection cover 41 are connected by a threaded screw, which facilitates the installation, disassembly and maintenance of the device. The rubber sealing ring is set between the fixed base 31 and the collection cover 41, which can seal the connection gap between the two and prevent air from entering the annular negative pressure chamber 42 from the connection, thus ensuring the stability of the negative pressure in the annular negative pressure chamber 42. The annular negative pressure chamber 42 is formed between the fixed base 31 and the collection cover 41, with a compact structure and no need for an additional sealing cavity. The threaded connection makes the installation and maintenance of the device more convenient, and the sealing effect of the rubber sealing ring is reliable, which can effectively prevent negative pressure leakage and ensure the stable operation of the negative pressure system.

[0036] See Figures 1-3 The bottom of the aquaculture pond 1 is equipped with a solid-liquid separator that is connected to the sewage outlet 2; the solid-liquid separator has a built-in filter screen and is used to filter and collect shrimp shells; it is understood that the solid-liquid separator is existing technology and is not shown in the figure, so it will not be described in detail.

[0037] It should be noted that the wastewater and shrimp shell mixture discharged from outlet 2 enters the solid-liquid separator. The filter screen built into the solid-liquid separator intercepts the shrimp shells on the surface of the filter screen, while the wastewater passes through the filter screen and is discharged. This achieves solid-liquid separation of shrimp shells and wastewater. The collected shrimp shells can be further processed, and the separated wastewater can be purified and reused in aquaculture pond 1 or discharged after meeting standards. The solid-liquid separator can achieve efficient recovery of shrimp shells, improve the overall economic benefits of aquaculture, and at the same time reduce the content of solid impurities in wastewater, thereby reducing the difficulty and cost of subsequent wastewater treatment.

[0038] Example 2: The technical solution of this example differs from that of Example 1 in that: (See below) Figure 5 and Figures 9-10 A flow regulation mechanism 5 is provided on the collection cover 41. The flow regulation mechanism 5 is used to control the breaking speed of the breaking mechanism 3 and the negative pressure intensity of the collection mechanism 4 by detecting the shrimp shell concentration inside the collection cover 41. The flow regulation mechanism 5 includes an ultrasonic concentration sensor 51, a waterproof junction box 52, a waterproof PLC controller 53, and a DC power module 54. The ultrasonic concentration sensor 51 is located inside the collection cover 41 near the top and is tilted downwards. The waterproof junction box 52 is located on the side wall of the collection cover 41, and both the waterproof PLC controller 53 and the DC power module 54 are located inside the waterproof junction box 52. The DC power module 54 and the waterproof PLC controller 53 are electrically connected. The ultrasonic concentration sensor 51, the motor 33, the negative pressure pump, and the waterproof PLC controller 53 are all connected by signal control. It is understood that the ultrasonic concentration sensor 51, the motor 33, the negative pressure pump, and the waterproof PLC controller 53 are all existing technologies. Among them, the motor 33 is a waterproof motor.

[0039] It should be noted that the ultrasonic concentration sensor 51 detects the shrimp shell concentration inside the collection cover 41 in real time and sends the concentration signal to the waterproof PLC controller 53. The waterproof PLC controller 53 sends a control signal to the motor 33 to adjust its speed according to the preset control logic, and sends a control signal to the negative pressure pump to adjust its power. The DC power module 54 provides a stable DC power supply for the entire flow regulation mechanism 5, and the waterproof junction box 52 protects the internal electrical components from seawater corrosion.

[0040] The flow regulation mechanism 5 can automatically adjust the bridge-breaking speed and negative pressure intensity according to the changes in shrimp shell concentration, realizing the adaptive operation of the device. During the non-molting period, it reduces the operating power and energy consumption, and during the concentrated molting period, it improves the bridge-breaking and collection capacity, ensuring the anti-clogging effect.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A sewage discharge and shrimp shell collection device for shrimp farming with anti-clogging function, comprising a farming pond (1) with a sewage outlet (2) at the bottom, characterized in that: A bridge-breaking mechanism (3) and a collection mechanism (4) are installed in the aquaculture pond (1) at the location corresponding to the sewage outlet (2); the collection mechanism (4) is used to collect sewage and shrimp shells; the bridge-breaking mechanism (3) includes: A fixed base (31) is installed inside the aquaculture pond (1); A rotating shaft (32) is rotatably connected to a fixed base (31) via a bearing about its axis. The motor (33) is mounted on the fixed base (31), and the output end of the motor (33) is coaxially connected to the rotating shaft (32); And a bridge-breaking tooth assembly (34) is provided on the motor (33); when the motor (33) drives the rotating shaft (32) to rotate, the bridge-breaking tooth assembly (34) is allowed to destroy the bridging structure formed by the shrimp shell during sewage discharge; the bridge-breaking tooth assembly (34) includes multiple upper bridge-breaking teeth (341), middle bridge-breaking teeth (342) and lower bridge-breaking teeth (343) arranged sequentially from top to bottom on the rotating shaft (32).

2. The shrimp farming sewage discharge and shrimp shell collection device with anti-clogging function according to claim 1, characterized in that: A spiral guide vane (35) is coaxially arranged on the rotating shaft (32), and one end of the spiral guide vane (35) is inserted into the drain outlet (2).

3. The shrimp farming sewage discharge and shrimp shell collection device with anti-clogging function according to claim 1, characterized in that: Multiple upper bridge teeth (341) are equally spaced around the circumference of the rotation axis (32); the tips of the upper bridge teeth (341) are inclined upwards and all tips are located on the same horizontal plane; multiple middle bridge teeth (342) are equally spaced around the circumference of the rotation axis (32); multiple middle bridge teeth (342) are staggered with the upper bridge teeth (341); the tips of the middle bridge teeth (342) are kept horizontal and all tips are located on the same horizontal plane; multiple lower bridge teeth (343) are equally spaced around the circumference of the rotation axis (32); multiple lower bridge teeth (343) are staggered with the middle bridge teeth (342); the tips of the lower bridge teeth (343) are inclined downwards and all tips are located on the same horizontal plane.

4. The shrimp farming sewage discharge and shrimp shell collection device with anti-clogging function according to claim 1, characterized in that: The collection mechanism (4) includes a collection cover (41) and a negative pressure connecting pipe (44); the collection cover (41) is coaxially sleeved on the rotating shaft (32), the bottom of the collection cover (41) is fixed to the breeding pond (1) by a flange, and the top of the collection cover (41) is coaxially connected to the fixed seat (31); the top of the collection cover (41) forms an annular negative pressure chamber (42); the inner wall of the top of the collection cover (41) is provided with a plurality of guide holes (43) around its periphery, and the guide holes (43) are inclined downwards, and the inner wall of the collection cover (41) is connected to the annular negative pressure chamber (44) through the guide holes (43). The annular negative pressure chamber (42) is connected; a negative pressure pump is provided on one side of the breeding pond (1), and the input end of the negative pressure pump is connected to the annular negative pressure chamber (42) through a negative pressure connecting pipe (44); the negative pressure formed in the annular negative pressure chamber (42) by the negative pressure pump is less than the water pressure in the collection cover (41); an annular inlet (46) is provided around the fixed seat (31), and the water in the breeding pond (1) is connected to the inside of the collection cover (41) through the annular inlet (46), and the radius of the annular inlet (46) is twice the distance from the annular inlet (46) to the bottom of the breeding pond (1).

5. A sewage discharge and shrimp shell collection device for shrimp farming with anti-clogging function according to claim 4, characterized in that: An electric flow regulating valve (45) is installed on the negative pressure connecting pipe (44).

6. A sewage discharge and shrimp shell collection device for shrimp farming with anti-clogging function according to claim 4, characterized in that: The collection hood (41) has an inverted conical structure, and the bottom diameter of the collection hood (41) is adapted to the sewage outlet (2).

7. A sewage discharge and shrimp shell collection device for shrimp farming with anti-clogging function according to claim 4, characterized in that: The fixed seat (31) and the collection cover (41) are connected by a threaded screw, and the annular negative pressure chamber (42) is formed between the fixed seat (31) and the collection cover (41); a rubber sealing ring is provided between the fixed seat (31) and the collection cover (41).

8. A sewage discharge and shrimp shell collection device for shrimp farming with anti-clogging function according to claim 1, characterized in that: The bottom of the aquaculture pond (1) is equipped with a solid-liquid separator that is connected to the sewage outlet (2); the solid-liquid separator has a built-in filter screen and is used to filter and collect shrimp shells.

9. A sewage discharge and shrimp shell collection device for shrimp farming with anti-clogging function according to claim 4, characterized in that: The collection hood (41) is provided with a flow regulation mechanism (5); the flow regulation mechanism (5) is used to control the bridge breaking speed of the bridge breaking mechanism (3) and the negative pressure intensity of the collection mechanism (4) by detecting the shrimp shell concentration in the collection hood (41).

10. A sewage discharge and shrimp shell collection device for shrimp farming with anti-clogging function according to claim 9, characterized in that: The flow regulation mechanism (5) includes an ultrasonic concentration sensor (51), a waterproof junction box (52), a waterproof PLC controller (53), and a DC power module (54). The ultrasonic concentration sensor (51) is located inside the collection cover (41) near the top and is tilted downwards. The waterproof junction box (52) is located on the side wall of the collection cover (41). The waterproof PLC controller (53) and the DC power module (54) are both located inside the waterproof junction box (52). The DC power module (54) and the waterproof PLC controller (53) are electrically connected. The ultrasonic concentration sensor (51), the motor (33), the negative pressure pump, and the waterproof PLC controller (53) are all connected by signal control.

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