Culture pond bottom automatic blowdown device for aquaculture

Abstract

The invention discloses a culture pond bottom automatic blowdown device for aquaculture, which comprises a driving box, a chassis, a plurality of culture pond boxes, a rotating assembly and a cleaning assembly, the culture pond boxes are bottomless ponds, and the lower sides of the culture pond boxes are transparent; the chassis is arranged on the upper side of the driving box, the culture pond boxes can rotate around the center of the chassis, and the rotating assembly is connected with the driving box and can be used for driving the culture pond boxes to rotate around the center of the chassis. When the culture pond box is cleaned, only the rotating assembly needs to be controlled to enable the culture pond box to rotate by a certain angle, in this way, the bottom, originally located in the culture pond box, of the base plate can be exposed, in this way, the exposed dirty bottom can be cleaned, cleaning can be conducted without fishing out aquatic products, and meanwhile the space in the pond cannot be occupied.

Description

Technical Field

[0001] The invention relates to the technical field of aquaculture, and in particular to an automatic sewage discharge device at the bottom of aquaculture pond used in aquaculture. Background Art

[0002] Aquaculture plays an important role in my country's fishery sector. At present, my country's aquaculture mainly adopts two modes: pond farming and cage farming. However, they both have some problems, such as low production efficiency, low resource utilization and pollution. The existence of these problems makes industrial upgrading an urgent task.

[0003] For cage farming, the excrement and unfinished feed residues produced by aquatic products during their growth process will gradually settle at the bottom of the cage pool. In order to clean up these dirt at the bottom of the cage pool, the Chinese patent publication number "CN113678784A" proposes an automatic sewage discharge device for aquaculture ponds, which mainly sets a diversion cleaning device in the aquaculture pond for cleaning. This method not only occupies a large space in the pond, thereby reducing the living space of aquatic products in the pond, but also requires the aquatic products to be fished out during cleaning to avoid damage to the aquatic products when the diversion cleaning device is working. When the aquatic products are fished out, it is easy to produce physiological stimulation to the aquatic products. The gills of fish will quickly lose water in the air, causing the gill filaments to stick together, affecting the gas exchange function, and putting the fish body in an oxygen-deficient state. In addition, a large amount of labor is consumed during fishing, and special temporary holding ponds, oxygenation equipment, etc. are also required to temporarily hold the fished aquatic products. Accordingly, the present application proposes an automatic sewage discharge device for the bottom of aquaculture ponds for aquaculture. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an automatic sewage discharge device for the bottom of aquaculture ponds used for aquaculture.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An automatic sewage discharge device for aquaculture pond bottom, comprising a driving box, a chassis, a plurality of aquaculture pond boxes, a rotating assembly, and a cleaning assembly. The aquaculture pond box is a bottomless pond, and the lower side of the aquaculture pond box is in a transparent state.

[0007] The chassis is arranged on the upper side of the driving box, and the plurality of breeding tanks can rotate around the center of the chassis. The rotating assembly is connected to the driving box, and the rotating assembly can be used to drive each breeding tank to rotate around the center of the chassis;

[0008] The cleaning component is used to clean the dirt on the bottom surface of the chassis. The cleaning component is composed of multiple scraping brushes and a swinging mechanism. A large number of nylon bristles are arranged on the lower side of the scraping brush, and the brush surface of the scraping brush is in contact with the bottom of the chassis. The swinging mechanism is used to drive the scraping brush to swing back and forth.

[0009] Preferably, a guide groove is provided at the lower end of each of the culture tanks, a slide rail matching the guide groove is fixedly connected to the inner bottom of the chassis, and the inner wall of the guide groove is tightly fitted to the slide rail.

[0010] Preferably, the rotating assembly includes a rotating shaft, a driving gear, a driven gear and a plurality of connecting rods, the driving gear and the driven gear are meshed with each other and are rotatably arranged inside a driving box, the lower end of the rotating shaft is fixedly connected to the axial center position of the upper end of the driving gear, one end of the connecting rod is fixedly connected to the side wall of the rotating shaft, and the other end of the connecting rod is fixedly connected to the side wall of the breeding pond box, the upper end of the rotating shaft passes through the chassis, and the rotating shaft is rotatably connected to the chassis, a second motor is fixedly installed in the driving box, and the output shaft of the second motor is fixedly connected to the driving gear.

[0011] Preferably, the swing mechanism includes a first bevel gear, a second bevel gear, a semi-bevel gear, a plurality of swing rods and a connecting shaft, the first bevel gear and the second bevel gear are fixedly connected to the connecting shaft, the semi-bevel gear cooperates with the first bevel gear and the second bevel gear, the upper end of the rotating shaft is fixedly connected to a transmission box, the connecting shaft is rotatably connected to the top of the transmission box, a first motor is fixedly connected to the side wall of the transmission box, the output shaft of the first motor is fixedly connected to the semi-bevel gear, one end of the swing rod is fixedly connected to the side wall of the connecting shaft, and the other end of the swing rod is fixedly connected to the scraper brush.

[0012] Preferably, an air jet pipe is fixedly connected to the inner wall of the breeding pond box, a plurality of air jet holes are opened on the side wall of the breeding pond box, and an air injection mechanism for injecting air into the air jet pipe is installed on the side wall of the breeding pond box.

[0013] Preferably, the gas injection mechanism includes a gas injection cylinder, a piston plate, an air inlet pipe, and an air outlet pipe, wherein the gas injection cylinder is fixedly connected to the side wall of the breeding pond box, the air inlet pipe and the air outlet pipe are both connected to the interior of the gas injection cylinder, the piston plate is sealingly and slidably connected to the gas injection cylinder, the air outlet pipe is connected to the injection pipe, the piston plate is pushed back and forth by a pushing mechanism, and one-way valves are installed in the air inlet pipe and the air outlet pipe.

[0014] Preferably, the pushing mechanism includes a roller, a rotating rod and a push rod. The roller moves along the circumferential inner wall of the chassis and rotates. One end of the rotating rod is rotatably connected to the upper end of the roller, and the other end of the rotating rod is rotatably connected to the push rod. One end of the push rod away from the rotating rod is fixedly connected to a piston plate. A support plate is fixedly connected to the side wall of the breeding pond box, and the roller is rotatably arranged on the support plate.

[0015] Preferably, a plurality of avoidance grooves are provided on the side wall of the transmission box, and each of the swing rods passes through an adjacent avoidance groove.

[0016] Preferably, a plurality of sewage pipes are fixedly connected to the lower end of the chassis, and the sewage pipes are communicated with the interior of the chassis, and electromagnetic control valves are installed in the sewage pipes.

[0017] The present invention has the following beneficial effects:

[0018] 1. By setting a chassis and a plurality of breeding pond boxes that can rotate around the center of the chassis, and the breeding pond box is a bottomless pond, the breeding pond box and the chassis are combined into a breeding pond with a bottom. When the breeding pond box needs to be cleaned, it is only necessary to operate the rotating component to rotate the breeding pond box at a certain angle, so that the bottom of the chassis originally in the breeding pond box can be exposed, so that the dirty bottom can be cleaned after being exposed, so that the aquatic products can be cleaned without taking out, and the space in the pond will not be occupied;

[0019] 2. By setting up the scraping brush and the swinging mechanism, when the bottom of the chassis needs to be cleaned, the swinging mechanism can be used to drive the scraping brush to swing back and forth, so as to effectively and quickly brush away the dirt deposited on the bottom of the chassis;

[0020] 3. By setting up an air injection mechanism, the air injection mechanism can be driven to operate when the breeding pond box is driven to rotate around the center of the chassis, so that air can be continuously injected into the jet pipe, and the injected air can be discharged from the jet hole on the side wall of the jet pipe. On the one hand, the discharged airflow can be used to make the aquatic products swim to match the movement of the breeding pond box to avoid the inner wall of the breeding pond box colliding with the aquatic products. On the other hand, it can also increase the oxygen content in the pool and improve the vitality of the aquatic products.

[0021] 4. By setting up a driving mechanism, the power generated by the rotation of the aquaculture tank can be used to drive the roller to rotate. In this way, the gas injection mechanism can be driven to operate when the aquaculture tank rotates, so that the aquatic products are kept away from the inner wall of the aquaculture tank in time to ensure that the aquatic products are not collided with the inner wall of the aquaculture tank. In addition, there is no need to set up additional electric gas injection equipment, thereby reducing equipment and energy costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of an automatic sewage discharge device for aquaculture pond bottom proposed by the present invention;

[0023] Figure 2 It is a schematic diagram of the connection structure of the chassis, the drive box and the rotating assembly in the present invention;

[0024] Figure 3 This is a schematic diagram of the connection structure of the culture tank box, the rotating shaft and the gas injection mechanism in the present invention;

[0025] Figure 4 It is a schematic diagram of the internal cross-sectional structure of the gas injection mechanism in the present invention;

[0026] Figure 5 It is a schematic diagram of the connection structure of the transmission box, the scraper brush and part of the swing mechanism in the invention;

[0027] Figure 6 It is a schematic diagram of the connection structure between the scraper and the swing mechanism in the present invention.

[0028] In the figure: 1 driving box, 2 chassis, 3 slide rail, 4 breeding pond box, 5 rotating shaft, 6 connecting rod, 7 transmission box, 8 first motor, 9 avoidance groove, 10 swing rod, 11 scraper, 12 second motor, 13 driving gear, 14 driven gear, 15 piston plate, 16 jet pipe, 17 jet hole, 18 air injection cylinder, 19 air inlet pipe, 20 air outlet pipe, 21 support plate, 22 roller, 23 rotating rod, 24 push rod, 25 first bevel gear, 26 second bevel gear, 27 semi-bevel gear, 28 sewage pipe, 29 connecting shaft, 30 guide groove. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] Embodiment 1:

[0031] Reference Figure 1 , an automatic sewage discharge device for aquaculture pond bottom, comprising a driving box 1, a chassis 2, a plurality of aquaculture pond boxes 4 and a rotating assembly, a cleaning assembly, the aquaculture pond box 4 is a bottomless pond, and the lower side of the aquaculture pond box 4 is in a transparent state;

[0032] The chassis 2 is arranged on the upper side of the driving box 1, and the plurality of breeding tank boxes 4 can rotate around the center of the chassis 2. The rotating assembly is connected to the driving box 1, and the rotating assembly can be used to drive each breeding tank box 4 to rotate around the center of the chassis 2;

[0033] The cleaning assembly is used to clean the dirt on the bottom surface of the chassis 2. The cleaning assembly is composed of a plurality of scraping brushes 11 and a swing mechanism. A large number of nylon bristles are arranged on the lower side of the scraping brush 11, and the brush surface of the scraping brush 11 contacts the bottom of the chassis 2. The swing mechanism is used to drive the scraping brush 11 to swing back and forth. Specifically, Figure 1As shown, the breeding pond boxes 4 and the scraping brushes 11 are arranged at staggered intervals, that is, each scraping brush 11 is located between two breeding pond boxes 4.

[0034] A plurality of sewage pipes 28 are fixedly connected to the lower end of the chassis 2 , and the sewage pipes 28 are communicated with the interior of the chassis 2 , and electromagnetic control valves are installed in the sewage pipes 28 .

[0035] A guide groove 30 is formed at the lower end of each culture tank 4 , and a slide rail 3 matching the guide groove 30 is fixedly connected to the inner bottom of the chassis 2 , and the inner wall of the guide groove 30 is tightly fitted to the slide rail 3 .

[0036] In this embodiment, the bottomless breeding pond box 4 and the chassis 2 form a breeding pond with a "movable bottom", and aquatic products can be placed in the breeding pond box 4 for cultivation. The excrement and uneaten feed generated during the growth of the aquatic products can fall on the bottom of the chassis 2. When the bottom of the chassis 2 located in the breeding pond box 4 is contaminated with a lot of dirt, the rotating component can be started and drive multiple breeding pond boxes 4 to rotate together, so that the part of the chassis 2 originally located in the breeding pond box 4 can be exposed. At this time, the swing mechanism of the cleaning component can be started to drive the scraper 11 to swing back and forth, and the scraper 11 that swings back and forth can scrape and clean the exposed bottom of the chassis 2 with dirt.

[0037] In addition, when the scraper brush 11 is swinging to clean the bottom of the chassis 2, a high-pressure water gun can be used for flushing, which can speed up the cleaning speed of the bottom of the chassis 2. After the cleaning and flushing are completed, a suction pump can be connected to the sewage pipe 28 on the lower side of the chassis 2, and the electromagnetic control valve in the sewage pipe 28 can be opened. In this way, the sewage that has been flushed and mixed with dirt in the chassis 2 can be pumped away to make the bottom of the chassis 2 clean.

[0038] With such a design, there is no need to set up relevant cleaning mechanisms inside the breeding pond box 4 for cleaning, and the culture space inside the breeding pond box 4 will not be occupied, so that the aquatic products in the breeding pond box 4 have sufficient space to move. In addition, there is no need to fish out the aquatic products and then clean them. The entire cleaning process is fully automatic, does not require labor, and will not cause physiological stimulation to the aquatic products due to fishing, thereby ensuring the vitality of the aquatic products, and there is no need to equip additional temporary holding ponds, oxygenation equipment, etc.

[0039] Embodiment 2:

[0040] Compared with Example 1, refer to Figure 2The rotating assembly in this embodiment includes a rotating shaft 5, a driving gear 13, a driven gear 14 and a plurality of connecting rods 6. The driving gear 13 and the driven gear 14 are meshed with each other and are rotatably arranged inside the driving box 1. The lower end of the rotating shaft 5 is fixedly connected to the axial center position of the upper end of the driving gear 13. One end of the connecting rod 6 is fixedly connected to the side wall of the rotating shaft 5. The other end of the connecting rod 6 is fixedly connected to the side wall of the breeding pond box 4. The upper end of the rotating shaft 5 passes through the chassis 2, and the rotating shaft 5 is rotatably connected to the chassis 2. A second motor 12 is fixedly installed in the driving box 1, and the output shaft of the second motor 12 is fixedly connected to the driving gear 13.

[0041] Reference Figure 6 , and the swing mechanism includes a first bevel gear 25, a second bevel gear 26, a semi-bevel gear 27, a plurality of swing rods 10 and a connecting shaft 29, the first bevel gear 25 and the second bevel gear 26 are fixedly connected to the connecting shaft 29, the semi-bevel gear 27 cooperates with the first bevel gear 25 and the second bevel gear 26, the upper end of the rotating shaft 5 is fixedly connected to a transmission box 7, the connecting shaft 29 is rotatably connected to the top of the transmission box 7, the side wall of the transmission box 7 is fixedly connected to a first motor 8, and the output shaft of the first motor 8 is fixedly connected to the semi-bevel gear 27. Specifically, as Figure 6 As shown, the half bevel gear 27 is a bevel gear with only partial teeth. When the half bevel gear 27 rotates, it can alternately mesh with the first bevel gear 25 and the second bevel gear 26 and drive the first bevel gear 25 and the second bevel gear 26 to rotate.

[0042] One end of the swing rod 10 is fixedly connected to the side wall of the connecting shaft 29 , and the other end of the swing rod 10 is fixedly connected to the scraper 11 .

[0043] The side wall of the transmission box 7 is provided with a plurality of avoidance grooves 9, and each swing rod 10 passes through the adjacent avoidance grooves 9. Specifically, by providing the avoidance grooves 9, when the swing rod 10 drives the scraping brush 11 to swing back and forth, the avoidance grooves 9 can provide a movable space for the swing rod 10.

[0044] In this embodiment, when it is necessary to drive each breeding tank 4 to rotate, the second motor 12 can be started. Figure 2 As shown, the driving gear 13 is driven to rotate, and then the driven gear 14 meshing with the driving gear 13 is rotated, thereby driving the rotating shaft 5 to rotate, and the rotating shaft 5 will drive each breeding pond box 4 to rotate around the center of the chassis 2 through each connecting rod 6.

[0045] In addition, when the rotating shaft 5 rotates, the transmission box 7 at the upper end of the rotating shaft 5 and the components connected to the transmission box 7 will also be driven to rotate synchronously, so that the scraping brushes 11 and the swing rods 10 are always located between the two breeding pond boxes 4.

[0046] When the swing mechanism needs to be started to drive the scraper 11 to swing back and forth, the first motor 8 can be started to drive the semi-bevel gear 27 to rotate continuously. Figure 6 As shown, when the semi-bevel gear 27 rotates, it will first mesh with the first bevel gear 25 on the upper side and drive the first bevel gear 25 to rotate forward, thereby driving the connecting shaft 29 to rotate forward by a certain angle, thereby driving each scraper 11 to rotate forward by a certain angle synchronously through each swing rod 10, and then the semi-bevel gear 27 will disengage from the first bevel gear 25 and start to mesh with the second bevel gear 26, which can drive the second bevel gear 26 to rotate reversely, so that the connecting shaft 29 can be driven to rotate reversely by a certain angle, and the scraper 11 can be driven to rotate reversely by a certain angle synchronously through the swing rod 10, then with the continuous rotation of the semi-bevel gear 27, it can alternately mesh with the first bevel gear 25 and the second bevel gear 26, and can drive the connecting shaft 29 to rotate back and forth continuously, and finally drive each scraper 11 to rotate back and forth continuously through each swing rod 10, so as to achieve the effect of the scraper 11 swinging back and forth and cleaning the dirt on the bottom of the chassis 2.

[0047] Embodiment three:

[0048] Compared with the first and second embodiments, refer to Figure 3 and Figure 4 An air jet pipe 16 is fixedly connected to the inner wall of the culture tank box 4 , and a plurality of air jet holes 17 are opened on the side wall of the air jet pipe 16 . An air injection mechanism for injecting air into the air jet pipe 16 is installed on the side wall of the culture tank box 4 .

[0049] The gas injection mechanism includes a gas injection cylinder 18, a piston plate 15, an air inlet pipe 19, and an air outlet pipe 20, wherein the gas injection cylinder 18 is fixedly connected to the side wall of the culture tank box 4, the air inlet pipe 19 and the air outlet pipe 20 are both connected to the inside of the gas injection cylinder 18, the piston plate 15 is sealingly and slidably connected to the gas injection cylinder 18, the air outlet pipe 20 is connected to the air injection pipe 16, and the piston plate 15 pushes it to reciprocate through the pushing mechanism. Check valves are installed in the air inlet pipe 19 and the air outlet pipe 20, wherein the check valve in the air inlet pipe 19 restricts air from flowing from the air inlet pipe 19 to the gas injection cylinder 18 in one direction, and the check valve in the air outlet pipe 20 restricts air from flowing from the gas injection cylinder 18 to the air outlet pipe 20.

[0050] The pushing mechanism includes a roller 22, a rotating rod 23, and a push rod 24. The roller 22 moves along the inner wall of the chassis 2 and rotates. One end of the rotating rod 23 is rotatably connected to the upper end of the roller 22, and the other end of the rotating rod 23 is rotatably connected to the push rod 24. The end of the push rod 24 away from the rotating rod 23 is fixedly connected to the piston plate 15. A support plate 21 is fixedly connected to the side wall of the culture tank box 4, and the roller 22 is rotatably set on the support plate 21. Specifically, as Figure 1As shown, the upper end surface of the chassis 2 is provided with a groove, and the roller 22 moves along the circumferential inner wall of the groove. The roller 22 can be supported by setting a support plate 21. The wheel surface of the roller 22 contacts the circumferential inner wall of the groove of the chassis 2. When the breeding pond box 4 rotates around the center of the chassis 2, the roller 22 can move and rotate.

[0051] In addition, the rotating rod 23 and the push rod 24 can form a structure similar to a crank slider. When the roller 22 rotates, the rotating rod 23 and the push rod 24 can drive the piston plate 15 to generate a linear reciprocating movement.

[0052] In this embodiment, when each culture tank box 4 rotates around the center of the chassis 2, the rollers 22 on the outer wall of the culture tank box 4 can move along the circumference of the chassis 2 toward the inner wall, and the rollers 22 can rotate during the movement. Figure 4 As shown, when the roller 22 rotates, the end of the rotating rod 23 can be driven to rotate around the center of the roller 22, and the push rod 24 can be driven to move back and forth through the rotating rod 23, so that the push rod 24 can drive the piston plate 15 to move back and forth synchronously. When the piston plate 15 moves toward the side of the roller 22, the space on the left side of the piston plate 15 increases, which can generate negative pressure and actively suck air from the air inlet pipe 19 into the air injection cylinder 18. When the push rod 24 pushes the piston plate 15 to move away from the roller 22, the air can be squeezed out along the air outlet pipe 20 and input into the air injection pipe 16 in the culture tank box 4, forcing the air to move along each air injection pipe 16. When the breeding pond box 4 is pushed to rotate, the air jet holes 17 on the side wall of the air jet pipe 16 in the breeding pond box 4 continuously discharge air, and the blown air flow will force the aquatic products to swim away from the side of the air jet pipe 16. In this way, when the breeding pond box 4 rotates around the center of the chassis 2, the aquatic products are forced to swim in the rotation direction of the breeding pond box 4, which can avoid the inner wall of the breeding pond box 4 colliding with the aquatic products when the breeding pond box 4 rotates. In addition, the air jet holes 17 on the side wall of the air jet pipe 16 can perform aeration treatment in the breeding pond box 4 to increase the oxygen content in the breeding pond box 4 and promote the vitality of the aquatic products.

[0053] Furthermore, the rotation of the culture tank box 4 drives the roller 22 to rotate, and the gas injection mechanism can be immediately started to exhaust air, so that the aquatic products can be kept away from the inner wall of the culture tank box 4 in time to ensure that the aquatic products are not collided with the inner wall of the culture tank box 4. In addition, there is no need to set up additional electric gas injection equipment, thereby reducing equipment and energy costs.

[0054] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatic sewage discharge device for aquaculture pond bottom, comprising a drive box (1), a chassis (2), a plurality of aquaculture pond boxes (4), a rotating assembly, and a cleaning assembly, characterized in that: The breeding pond box (4) is a bottomless pond, and the lower side of the breeding pond box (4) is transparent; The chassis (2) is arranged on the upper side of the driving box (1), and the plurality of breeding tank boxes (4) can rotate around the center of the chassis (2). The rotating assembly is connected to the driving box (1), and the rotating assembly can be used to drive each breeding tank box (4) to rotate around the center of the chassis (2); The cleaning component is used to clean dirt on the inner bottom surface of the chassis (2), and the cleaning component is composed of a plurality of scraping brushes (11) and a swing mechanism, a large number of nylon bristles are arranged on the lower side of the scraping brush (11), and the brush surface of the scraping brush (11) is in contact with the inner bottom of the chassis (2), and the swing mechanism is used to drive the scraping brush (11) to swing back and forth.

2. The automatic sewage discharge device for the bottom of aquaculture pond according to claim 1, characterized in that: A guide groove (30) is provided at the lower end of each of the culture tank boxes (4); a slide rail (3) matching the guide groove (30) is fixedly connected to the inner bottom of the chassis (2); and the inner wall of the guide groove (30) is tightly fitted to the slide rail (3).

3. The automatic sewage discharge device for the bottom of aquaculture pond according to claim 1, characterized in that: The rotating assembly comprises a rotating shaft (5), a driving gear (13), a driven gear (14) and a plurality of connecting rods (6); the driving gear (13) and the driven gear (14) are meshed with each other and are both rotatably arranged inside the driving box (1); the lower end of the rotating shaft (5) is fixedly connected to the axial center position of the upper end of the driving gear (13); one end of the connecting rod (6) is fixedly connected to the side wall of the rotating shaft (5); the other end of the connecting rod (6) is fixedly connected to the side wall of the breeding pond box (4); the upper end of the rotating shaft (5) passes through the chassis (2), and the rotating shaft (5) is rotatably connected to the chassis (2); a second motor (12) is fixedly installed inside the driving box (1); and the output shaft of the second motor (12) is fixedly connected to the driving gear (13).

4. The automatic sewage discharge device for the bottom of aquaculture pond according to claim 3, characterized in that: The swing mechanism comprises a first bevel gear (25), a second bevel gear (26), a semi-bevel gear (27), a plurality of swing rods (10) and a connecting shaft (29); the first bevel gear (25) and the second bevel gear (26) are fixedly connected to the connecting shaft (29); the semi-bevel gear (27) and the first bevel gear (25) and the second bevel gear (26) cooperate with each other; the upper end of the rotating shaft (5) is fixedly connected to a transmission box (7); the connecting shaft (29) is rotatably connected to the top of the transmission box (7); a first motor (8) is fixedly connected to the side wall of the transmission box (7); the output shaft of the first motor (8) is fixedly connected to the semi-bevel gear (27); one end of the swing rod (10) is fixedly connected to the side wall of the connecting shaft (29); and the other end of the swing rod (10) is fixedly connected to the scraper (11).

5. The automatic sewage discharge device for aquaculture pond bottom according to claim 1, characterized in that: An air jet pipe (16) is fixedly connected to the inner wall of the culture tank box (4), a plurality of air jet holes (17) are provided on the side wall of the air jet pipe (16), and an air injection mechanism for injecting air into the air jet pipe (16) is installed on the side wall of the culture tank box (4).

6. The automatic sewage discharge device for the bottom of aquaculture pond according to claim 5, characterized in that: The gas injection mechanism comprises a gas injection cylinder (18), a piston plate (15), an air inlet pipe (19), and an air outlet pipe (20), wherein the gas injection cylinder (18) is fixedly connected to the side wall of the culture tank box (4), the air inlet pipe (19) and the air outlet pipe (20) are both communicated with the inside of the gas injection cylinder (18), the piston plate (15) is sealingly slidably connected to the gas injection cylinder (18), the air outlet pipe (20) is communicated with the air injection pipe (16), the piston plate (15) is pushed to reciprocate by a pushing mechanism, and one-way valves are installed in the air inlet pipe (19) and the air outlet pipe (20).

7. The automatic sewage discharge device for the bottom of aquaculture pond according to claim 6, characterized in that: The pushing mechanism comprises a roller (22), a rotating rod (23), and a push rod (24); the roller (22) moves along the circumferential inner wall of the chassis (2) and rotates; one end of the rotating rod (23) is rotatably connected to the upper end of the roller (22); the other end of the rotating rod (23) is rotatably connected to the push rod (24); one end of the push rod (24) away from the rotating rod (23) is fixedly connected to the piston plate (15); a support plate (21) is fixedly connected to the side wall of the breeding pond box (4); and the roller (22) is rotatably arranged on the support plate (21).

8. The automatic sewage discharge device for the bottom of aquaculture pond according to claim 4, characterized in that: The side wall of the transmission box (7) is provided with a plurality of avoidance grooves (9), and each swing rod (10) passes through an adjacent avoidance groove (9).

9. The automatic sewage discharge device for the bottom of aquaculture pond according to claim 1, characterized in that: A plurality of sewage pipes (28) are fixedly connected to the lower end of the chassis (2), and the sewage pipes (28) are in communication with the interior of the chassis (2), and an electromagnetic control valve is installed in the sewage pipes (28).

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