Sewage suction device and breeding sewage suction equipment

Abstract

The invention relates to the technical field of aquaculture, in particular to a dirt suction device and aquaculture dirt suction equipment, the dirt suction device comprises an outer pipe, a dirt suction pipe, a dirt suction pipe, a dirt suction pipe, a dirt suction pipe and a dirt suction pipe, and the outer pipe is connected to the dirt suction pipe and communicated to a suction pump through the dirt suction pipe; the rotating mechanism is arranged in the outer pipe, the rotating mechanism has the degree of freedom of rotating around the central axis relative to the outer pipe, and at least one disturbance component capable of protruding out of the outer pipe is arranged at the bottom of the rotating mechanism; when the suction pump operates, the rotating mechanism can rotate around the central axis in the outer pipe under the action of suction water flow, so that the disturbance component is driven to rotate, and the water body is stirred to stir dirt into the water flow. According to the scheme, the defects that in the prior art, manual scraping and removing of dirt attached to the side wall and the bottom of a culture container are complex in operation, time-consuming, labor-consuming and prone to causing short-term serious deterioration of a water body are overcome, efficient and automatic removing of suspended and attached dirt in the water body is achieved, and meanwhile negative effects on water quality and cultured organism health are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of aquaculture, and in particular to a sewage suction device and aquaculture sewage suction equipment. Background Art

[0002] In modern aquaculture, with the influence of factors such as feeding, fish metabolism and photosynthesis in the water, a large amount of dirt will gradually accumulate on the side walls and bottom of the aquaculture containers (such as ponds, fish tanks, etc.). These dirt not only affects the water quality and reduces the dissolved oxygen content in the water, but also may become a breeding ground for pathogens, posing a threat to the health of farmed organisms. Traditionally, without emptying the water body, the dirt suspended in the water is usually cleaned by directly sucking it out through a water pipe. However, this method is only suitable for dealing with floating or semi-suspended dirt, and cannot effectively remove stubborn stains attached to the inner wall of the container.

[0003] At present, the dirt attached to the side walls and bottom of the aquaculture container is mainly removed by manual scraping and then sucked up. Although this method can solve the problem to a certain extent, its operation is complicated, time-consuming and labor-intensive. More importantly, this physical intervention method is likely to cause serious deterioration of the water body in a short period of time, including but not limited to increased turbidity, pH fluctuations, and increased concentrations of harmful substances. In addition, frequent manual intervention may also cause stress reactions to the cultured organisms, affecting their growth and development and even causing diseases. Summary of the invention

[0004] The present invention provides a sewage suction device and aquaculture sewage suction equipment, which are used to solve the defects in the prior art that manual scraping to remove sewage attached to the side walls and bottom of aquaculture containers is complicated, time-consuming and labor-intensive, and easily causes short-term severe deterioration of the water body, and realizes efficient and automatic removal of suspended and attached sewage in the water body, while reducing the negative impact on water quality and the health of aquaculture organisms.

[0005] The present invention provides a sewage suction device, comprising: an outer tube, the outer tube is connected to a sewage suction pipe and is connected to a suction pump through the sewage suction pipe; a rotating mechanism is arranged in the outer tube, the rotating mechanism has the freedom to rotate around a central axis relative to the outer tube, and at least one disturbance component that can protrude from the outer tube is arranged at the bottom of the rotating mechanism; wherein, when the suction pump is running, the rotating mechanism is affected by the suction water flow and can rotate around the central axis in the outer tube, thereby driving the disturbance component to rotate, so as to stir the water body and stir the sewage into the water flow.

[0006] According to one embodiment of the present invention, the rotating mechanism includes an inner tube and a spiral structure, the inner tube is rotatably disposed in the outer tube, and the spiral structure is fixedly disposed in the inner tube to drive the inner tube to rotate under the action of water flow.

[0007] According to one embodiment of the present invention, a bearing is provided between the outer circumferential surface of the inner tube and the inner circumferential surface of the outer tube, and the inner tube can rotate coaxially relative to the outer tube through the bearing.

[0008] According to one embodiment of the present invention, the inner tube includes a first inner tube portion and a second inner tube portion arranged at intervals along the length direction of the outer tube; the first inner tube portion is close to the top of the outer tube, and the second inner tube portion is close to the bottom of the outer tube, and the bearings are respectively provided thereon; the first inner tube portion and the second inner tube portion are connected by the spiral structure, and both ends of the spiral structure extend into the first inner tube portion and the second inner tube portion, respectively.

[0009] According to one embodiment of the present invention, outer wall clamping points are respectively provided on the outer side surfaces of the first inner tube portion and the second inner tube portion for positioning and matching with the inner surface of the bearing.

[0010] According to one embodiment of the present invention, the spiral structure includes a central rod and spiral blades surrounding the central rod, and the spiral blades are used to generate a rotational force when water flows through, thereby driving the entire rotating mechanism to rotate.

[0011] According to one embodiment of the present invention, the bottom of the disturbance component has a tooth-shaped structure, and the tooth-shaped structure includes a plurality of notch structures evenly arranged on the bottom edge of the disturbance component.

[0012] According to one embodiment of the present invention, a plurality of disturbance brushes are provided on the outer peripheral surface of the toothed structure, and the disturbance brushes are used to scrape the side wall or the bottom of the culture container during rotation to enhance the disturbance ability of the disturbance component on the water body.

[0013] According to one embodiment of the present invention, the disturbance component includes a connecting portion and a wide-mouth portion, at least a portion of the connecting portion is inserted into the inner tube, and the wide-mouth portion is connected to the bottom of the connecting portion; the toothed structure is arranged on the wide-mouth side of the wide-mouth portion.

[0014] The present invention also provides aquaculture waste suction equipment, comprising a suction pump and a sewage suction pipe, wherein the sewage suction device of the above embodiment is arranged at the end of the sewage suction pipe.

[0015] The sewage suction device and aquaculture sewage suction equipment provided by the present invention can rotate around the central axis of the outer tube by utilizing the effect of the suction water flow when the suction pump is running, thereby driving the disturbance component at the bottom to rotate, which can not only effectively stir the water body and help suspended sewage enter the water flow to be absorbed, but also is suitable for removing stubborn stains attached to the side wall and bottom of the container. The bottom of the rotating mechanism is equipped with at least one disturbance component that can protrude from the outer tube. During the rotation process, the disturbance component can not only break the attached dirt layer, but also stir the dirt into the water flow so that it can be quickly sucked out by the suction pump, thereby improving the cleaning efficiency and reducing the interference with the water environment. Compared with the traditional manual scraping method, the present invention significantly reduces the dependence on manual operation, which not only saves labor costs, but also avoids the stress response of the aquaculture organisms caused by frequent physical intervention and the problems that may be caused. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a perspective structural schematic diagram of the sewage suction device provided by the present invention.

[0018] Figure 2 It is a schematic cross-sectional structural diagram of the sewage suction device provided by the present invention.

[0019] Figure 3 It is a schematic diagram of the exploded structure of the sewage suction device provided by the present invention.

[0020] Figure 4 It is a schematic structural diagram of the disturbance component of the sewage suction device provided by the present invention.

[0021] Reference numerals: 10. Outer tube; 11. Disturbing component; 12. Bearing; 13. First inner tube portion; 14. Second inner tube portion; 15. Outer wall clamping point; 16. Center rod; 17. Spiral blades; 18. Tooth-shaped structure. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limitations on the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. It should also be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "set", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0024] Combine the following Figure 1 , Figure 2 , Figure 3 and Figure 4 The specific embodiments of the sewage suction device and the aquaculture sewage suction equipment of the present invention are described.

[0025] like Figure 1 , Figure 2 and Figure 3 As shown, the present invention provides a sewage suction device, comprising: an outer tube 10, the outer tube 10 is connected to a sewage suction pipe and connected to a suction pump through the sewage suction pipe; a rotating mechanism is arranged in the outer tube 10, the rotating mechanism has the freedom to rotate around the central axis relative to the outer tube 10, and at least one disturbance component 11 that can protrude from the outer tube 10 is arranged at the bottom of the rotating mechanism; wherein, when the suction pump is running, the rotating mechanism is affected by the suction water flow and can rotate around the central axis in the outer tube 10, thereby driving the disturbance component 11 to rotate, so as to stir the water body and stir the sewage into the water flow.

[0026] Specifically, when the suction pump is started, the negative pressure it generates will cause a directional flow of water to form inside the outer tube 10. This flow can not only effectively absorb the dirt suspended in the water, but also drive the rotating mechanism to rotate. The design of the rotating mechanism allows it to naturally rotate around its own central axis under the action of the water flow, thereby causing the disturbance component 11 at the bottom to rotate as well. The disturbance component 11 can effectively destroy the stubborn stain layer attached to the container wall during the rotation process, and at the same time stir the peeled dirt into the water flow, and finally be sucked out by the suction pump through the sewage suction pipe.

[0027] During use, the operator only needs to place the suction device in the aquaculture container that needs to be cleaned, and ensure that its outer tube 10 is close to or directly contacts the area to be cleaned (such as the side wall or the bottom). Then turn on the suction pump, and the suction device starts to work automatically. With the operation of the rotating mechanism and the disturbance component 11, even the dirt in the difficult-to-reach position can be effectively removed. The whole process does not require direct human intervention to perform scraping and other actions, which greatly reduces the human interference with the water environment and the impact on the aquaculture organisms.

[0028] Furthermore, the above-mentioned sewage suction device can also be equipped with different accessories or adjustment parameters according to actual needs to adapt to applications in different scenarios. For example, the outer tube 10 of appropriate length and diameter can be selected according to different sizes of breeding containers; for areas with a high degree of pollution, the working power of the suction pump can be adjusted to enhance the cleaning effect; in addition, the disturbance component 11 can also be replaced with different shapes and materials according to specific cleaning tasks to optimize the cleaning efficiency and minimize the impact on the breeding organisms. In this way, the sewage suction device provided by the present invention not only improves the cleaning efficiency, but also significantly reduces the maintenance cost and the negative impact on the environment.

[0029] According to a sewage suction device of the present invention, the rotating mechanism includes an inner tube and a spiral structure, the inner tube is rotatably arranged in the outer tube 10, and the spiral structure is fixedly arranged in the inner tube, and is used to drive the inner tube to rotate under the action of water flow. Specifically, when the suction pump is running, the water flow will pass through the spiral structure in the inner tube. Since the spiral structure has a specific angle and shape, the water flow will generate a force that drives the inner tube to rotate when passing through the spiral structure. The spiral structure is fixedly arranged in the inner tube, which can ensure that the rotational power generated under the action of the water flow can be efficiently transmitted to the inner tube, thereby driving the entire rotating mechanism to rotate. The disturbance component 11 equipped at the bottom of the rotating mechanism rotates with the rotation of the inner tube. The disturbance component 11 can be a brush, a scraper or other forms of design. During the rotation process, it can effectively break the stubborn stains attached to the side walls and bottom of the breeding container, and stir these dirt into the water flow so that they can be quickly sucked out by the suction pump.

[0030] Furthermore, according to a sewage suction device of the present invention, a bearing 12 is provided between the outer circumference of the inner tube and the inner circumference of the outer tube 10, and the inner tube can rotate coaxially relative to the outer tube 10 through the bearing 12. The bearing 12 has a small friction coefficient and a high rotation accuracy. The bearing 12 is provided between the outer circumference of the inner tube and the inner circumference of the outer tube 10 to ensure that the inner tube can smoothly rotate coaxially relative to the outer tube 10 under the action of the water flow, while maintaining the structural stability and durability of the entire device. Preferably, the bearing 12 is a thin-walled bearing. By adopting a thin-walled bearing, the rotating mechanism in the present invention can reduce the wear and energy loss caused by the rotational motion without affecting the sewage suction efficiency.

[0031] Preferably, according to a sewage suction device of the present invention, the inner tube includes a first inner tube portion 13 and a second inner tube portion 14 arranged at intervals along the length direction of the outer tube; the first inner tube portion 13 is close to the top of the outer tube 10, and the second inner tube portion 14 is close to the bottom of the outer tube 10, and bearings 12 are respectively provided; the first inner tube portion 13 and the second inner tube portion 14 are connected by a spiral structure, and the two ends of the spiral structure extend into the first inner tube portion 13 and the second inner tube portion 14 respectively. Specifically, the inner tube is divided into the first inner tube portion 13 and the second inner tube portion 14 arranged at intervals along the length direction of the outer tube, and bearings 12 are respectively provided in these two portions close to the top and bottom of the outer tube 10. It not only helps to improve the overall stability and coaxiality of the rotating mechanism, but also can more effectively distribute the load during rotation, reduce single-point stress concentration, and thus extend the service life of the device.

[0032] The first inner tube portion 13 and the second inner tube portion 14 are connected by a spiral structure, and the two ends of the spiral structure extend into the first inner tube portion 13 and the second inner tube portion 14 respectively, ensuring that the water flow generated by the suction pump can flow smoothly through the entire rotating mechanism, maximizing the use of the energy of the water flow to drive the inner tube to rotate. In actual operation, when the suction pump is started, the water flow first passes through the first inner tube portion 13, and then accelerates through the spiral structure to form a force that drives the inner tube to rotate. Due to the existence of the spiral structure, the water flow will be guided and accelerated during the passage process, and this enhanced water flow force acts on the spiral structure between the first inner tube portion 13 and the second inner tube portion 14, thereby effectively driving the entire inner tube assembly to rotate relative to the outer tube 10. At the same time, the bearings 12 located in the first inner tube portion 13 and the second inner tube portion 14 ensure the stability and efficiency of this rotation process, reduce friction resistance, make the rotation smoother, and improve the efficiency of dirt removal.

[0033] Further, according to a sewage suction device of the present invention, the outer side surfaces of the first inner tube portion 13 and the second inner tube portion 14 are respectively provided with outer wall clamping points 15 for positioning and matching with the inner surface of the bearing 12. Specifically, by precisely manufacturing the outer wall clamping points 15, the bearing 12 can be more easily aligned during assembly and remain stable during use. The outer wall clamping points 15 can be small protrusions evenly distributed or a circle of slight protrusions along the circumferential direction. When the sewage suction device is working, the water flow generated by the suction pump will cause the inner tube assembly (including the first inner tube portion 13, the spiral structure and the second inner tube portion 14) to rotate relative to the outer tube 10. Due to the provision of the outer wall clamping points 15, the bearing 12 can be firmly held in position, avoiding displacement caused by the impact force of the water flow or the rotational movement.

[0034] According to a sewage suction device of the present invention, the spiral structure includes a central rod 16 and a spiral blade 17 surrounding the central rod 16, and the spiral blade 17 is used to generate a rotational force when water flows through, thereby driving the entire rotating mechanism to rotate. The central rod 16, as the core supporting component of the spiral structure, provides the necessary rigidity and strength to ensure that it will not bend or deform under the strong driving force of the water flow, thereby ensuring the stability and consistency of the rotating action. When the water flows through the spiral blade 17, due to its special spiral shape, it can effectively convert the energy of the water flow into rotational kinetic energy. The water flows along the direction of the spiral blade 17, generating a force that drives the spiral structure to rotate. This force is sufficient to drive the entire rotating mechanism (including the first inner tube 13, the second inner tube 14 and the spiral structure connecting them) to rotate coaxially relative to the outer tube 10.

[0035] Among them, the spiral blade 17 can be a continuous spiral blade, or it can be composed of a plurality of small blades arranged in a spiral. The advantage of a single spiral blade is that it can provide a continuous and smooth rotational force, which is suitable for application scenarios that require a continuous and stable cleaning effect. The multiple spirally arranged blades can adjust the angle and size of each blade according to actual needs to optimize the efficiency of water flow, which is suitable for cleaning tasks under more complex or specific conditions. For example, when there is a lot of dirt or it is firmly attached, the cleaning ability can be enhanced by increasing the number of blades or adjusting the angle of the blades.

[0036] According to a dirt suction device of the present invention, the bottom of the disturbance component 11 has a tooth-shaped structure 18, and the tooth-shaped structure 18 includes a plurality of notch structures evenly arranged on the bottom edge of the disturbance component 11. The tooth-shaped structure 18 at the bottom of the disturbance component 11 can enhance its ability to remove stubborn stains attached to the side wall and bottom of the breeding container, and the evenly distributed notch structure helps to maintain the balance of the disturbance component 11 during rotation. In practical applications, the operator can select a suitable disturbance component 11 and its tooth-shaped structure 18 according to the specific conditions of the breeding container (such as the type of dirt, the degree of attachment, etc.). For example, when dealing with harder or heavier stains, a disturbance component 11 with a deeper and sharper notch can be selected; and when a gentler treatment is required, a design with a shallower notch can be selected to avoid damage to the container surface.

[0037] like Figure 4As shown, according to a sewage suction device of the present invention, a plurality of disturbance brushes are arranged on the outer peripheral surface of the toothed structure 18, and the disturbance brushes are used to scrape the side wall or bottom of the breeding container during rotation, so as to enhance the disturbance ability of the disturbance component 11 on the water body. Specifically, the disturbance brushes are installed on the outer peripheral surface of the toothed structure 18, and can effectively scrape the side wall or bottom of the container during rotation, so as to more thoroughly remove stubborn stains. Each disturbance brush can be made of a wear-resistant material with a certain elasticity, such as nylon wire, steel wire or other materials suitable for contacting the surface of containers of different materials and effectively removing dirt. When the sewage suction device is running, as the rotating mechanism drives the disturbance component 11 to rotate, the disturbance brush will continuously contact and move relative to the inner wall of the container. This process can not only physically scrape off the stains on the surface, but also increase the turbulence of the local water flow through the action of the disturbance brush, and further help the suspended particles to break away from the container wall and enter the mainstream water so as to be extracted by the suction pump.

[0038] According to a sewage suction device of the present invention, the disturbance component 11 includes a connecting part and a wide-mouth part, at least a part of the connecting part is inserted into the inner tube, and the wide-mouth part is connected to the bottom of the connecting part; the tooth-shaped structure 18 is arranged on the wide-mouth side of the wide-mouth part. Specifically, the connecting part is used to fix the disturbance component 11 to the inner tube. At least a part of the connecting part is inserted into the inner tube, which not only provides a mechanical connection point, but also ensures sufficient strength to withstand the stress generated during rotation. The wide-mouth part is connected to the bottom of the connecting part and is the main working part of the disturbance component 11. It is designed to expand the coverage to more effectively contact and clean the dirt on the side wall or bottom of the breeding container. The tooth-shaped structure 18 (including multiple notch structures evenly arranged) is located at the outermost edge of the wide-mouth part, that is, the side directly facing the surface to be cleaned. When the disturbance component 11 rotates, these tooth-shaped structures 18 first contact the attached dirt and peel it off through physical scraping. At the same time, due to the presence of the tooth-shaped structure 18, the local disturbance of the water body can be further enhanced, helping the suspended particles to enter the water flow faster and be sucked out by the suction pump. In addition, a plurality of disturbance brushes (if used) are arranged on the outer peripheral surface of the wide mouth portion, which can further enhance the scraping effect on the side wall or bottom of the container during the rotation process, thereby removing stubborn stains more thoroughly.

[0039] The aquaculture waste suction device provided by the present invention is described below. The aquaculture waste suction device described below and the suction device described above can be referenced to each other.

[0040] The present invention also provides a kind of aquaculture waste suction equipment, including a suction pump and a sewage suction pipe, and the sewage suction pipe is provided with a sewage suction device of the above embodiment at the end. Among them, the sewage suction device includes a double-layer sleeve structure (outer tube 10 and inner tube). The outer tube 10 is preferably a straight tube, and bearings 12 are respectively installed on the upper and lower sides of the end close to the suction port, so that the inner tube can rotate coaxially relative to the outer tube 10. The inner tube is composed of a first inner tube part 13, a spiral structure and a second inner tube part 14. The first inner tube part 13 is close to the top of the outer tube 10 and is connected to the outer tube 10 through the bearing 12; the second inner tube part 14 is close to the bottom and is also connected to the outer tube 10 through the bearing 12, and a disturbance component 11 with a toothed structure 18 extends from the bottom of the second inner tube part 14. The middle part adopts a spiral structure design to drive the entire rotating mechanism.

[0041] The outer side surfaces of the first inner tube portion 13 and the second inner tube portion 14 of the sewage suction device are respectively provided with outer wall clamping points 15, which are used to position and cooperate with the inner surface of the bearing 12 to ensure the stable rotation of the inner tube. The spiral structure includes a central rod 16 and spiral blades 17 surrounding the central rod 16, which can generate a rotational force when water flows through, thereby driving the entire rotating mechanism to rotate. The disturbance component 11 includes a connecting portion and a wide-mouth portion, at least a portion of the connecting portion is inserted into the inner tube, the wide-mouth portion is arranged below the connecting portion, and the tooth-shaped structure 18 is located on the wide-mouth side of the wide-mouth portion. A plurality of notch structures are evenly arranged on the tooth-shaped structure 18, and a plurality of disturbance brushes are arranged on its outer peripheral surface to enhance the disturbance ability of the water body and scrape the dirt on the side wall or bottom of the container.

[0042] When the device is running, the negative pressure generated by the suction pump will cause a directional flow of water to form inside the outer tube 10. When the water flows through the spiral structure, it will push the inner tube to rotate, driving the disturbance component 11 at the bottom to rotate. The disturbance brush installed on the disturbance component 11 can not only moderately stir the surrounding water during the rotation process, helping to lift the dirt in the water and make it easier to be sucked in, but also slightly scrape the dirt attached to the side wall and bottom of the breeding container, helping the dirt to break away from the surface and enter the water, and finally be sucked out of the container by the suction pump.

[0043] The present invention helps to make suspended and attached dirt in the water enter the suction port more easily, and be discharged outside the container under the suction action of the water pump, thereby achieving efficient and automatic removal of dirt in the water body and reducing the negative impact on water quality and the health of cultured organisms.

[0044] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "mode", "specific mode", or "some modes" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or mode are included in at least one embodiment or mode of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or mode. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or modes in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or modes described in this specification and the features of the different embodiments or modes, without contradiction.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A sewage suction device, characterized in that: include: An outer pipe (10), the outer pipe (10) being connected to a sewage suction pipe and connected to a suction pump via the sewage suction pipe; a rotating mechanism, arranged in the outer tube (10), the rotating mechanism having a degree of freedom to rotate about a central axis relative to the outer tube (10), and at least one disturbance component (11) capable of protruding from the outer tube (10) being arranged at the bottom of the rotating mechanism; When the suction pump is in operation, the rotating mechanism is acted upon by the suction water flow and can rotate around the central axis within the outer tube (10), thereby driving the disturbance component (11) to rotate, thereby stirring the water body and stirring the dirt into the water flow.

2. The sewage suction device according to claim 1, characterized in that: The rotating mechanism comprises an inner tube and a spiral structure, the inner tube being rotatably arranged in the outer tube (10), and the spiral structure being fixedly arranged in the inner tube and used for driving the inner tube to rotate under the action of water flow.

3. The sewage suction device according to claim 2, characterized in that: A bearing (12) is provided between the outer circumferential surface of the inner tube and the inner circumferential surface of the outer tube (10), and the inner tube is able to rotate coaxially relative to the outer tube (10) through the bearing (12).

4. The sewage suction device according to claim 3, characterized in that: The inner tube comprises a first inner tube portion (13) and a second inner tube portion (14) which are arranged at intervals along the length direction of the outer tube (10); The first inner tube portion (13) is close to the top of the outer tube (10), and the second inner tube portion (14) is close to the bottom of the outer tube (10), and the bearings (12) are respectively provided thereon; The first inner tube portion (13) and the second inner tube portion (14) are connected by the spiral structure, and two ends of the spiral structure extend into the first inner tube portion (13) and the second inner tube portion (14) respectively.

5. The sewage suction device according to claim 4, characterized in that: The outer side surfaces of the first inner tube portion (13) and the second inner tube portion (14) are respectively provided with outer wall clamping points (15) for positioning and matching with the inner surface of the bearing (12).

6. The sewage suction device according to claim 2, characterized in that: The spiral structure comprises a central rod (16) and spiral blades (17) surrounding the central rod (16); the spiral blades (17) are used to generate a rotational force when water flows through, thereby driving the entire rotating mechanism to rotate.

7. The sewage suction device according to any one of claims 2 to 6, characterized in that: The bottom of the disturbance component (11) has a tooth-shaped structure (18), and the tooth-shaped structure (18) comprises a plurality of notch structures evenly arranged on the bottom edge of the disturbance component (11).

8. The sewage suction device according to claim 7, characterized in that: The outer peripheral surface of the toothed structure (18) is provided with a plurality of disturbance brushes, and the disturbance brushes are used to scrape the side wall or the bottom of the culture container during rotation, thereby enhancing the disturbance capability of the disturbance component (11) on the water body.

9. The sewage suction device according to claim 7, characterized in that: The disturbance component (11) comprises a connecting portion and a wide-mouth portion, at least a portion of the connecting portion is inserted into the inner tube, and the wide-mouth portion is connected to the lower side of the connecting portion; The tooth-shaped structure (18) is arranged on the wide mouth side of the wide mouth portion.

10. A breeding waste suction device, characterized in that: It comprises a suction pump and a sewage suction pipe, and the end of the sewage suction pipe is provided with a sewage suction device as claimed in any one of claims 1 to 9.

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