Filter vat for aquatic breeding

Abstract

The utility model discloses a filter vat for aquarium breeding, and belongs to the field of aquarium breeding. The blow-off pipe is arranged at the bottom of the barrel body, washing water can be directly injected into the barrel body to wash dirt at the bottom, then the dirt is discharged through the blow-off pipe, the filtering assembly in the barrel body does not need to be taken out in the washing process, and operation is more convenient; and the rotating core with the steering channel is arranged in the inner cavity of the blow-off pipe for matching, and the blow-off pipe is in a communicated state for blow-off or in an open-circuit state by controlling the rotating direction of the rotating core, so that the normal filtering state use of the filtering barrel is not influenced at the moment, overflow from the blow-off pipe at the bottom is avoided, and the use safety is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of aquarium breeding, and more specifically, to a filter barrel for aquarium breeding. Background Art

[0002] In the process of goldfish breeding, the control of water quality is particularly important. In the prior art, there are mainly two ways to treat breeding water: one is to change water regularly, that is, directly discharge the breeding water containing pollutants through the sewage pipe and add purified water for supplement. This method will cause certain pollution and consume more water resources; the other is to filter and recycle water, that is, use a filtering device such as a filter barrel to purify the breeding water and then inject it into the breeding pond again for recycling the breeding water.

[0003] After the filter barrel is used for a long time, dirt will continuously accumulate at the bottom of the filter barrel and needs to be cleaned regularly. Specifically, it is necessary to stop the machine and first remove the filter media from the filter barrel, and then the dirt at the bottom can be rinsed and cleaned. This method is relatively cumbersome to operate, has low cleaning efficiency, and poor user experience. For example, the external filter barrel commonly used in the current market for aquariums adopted by the publication number CN211048195U has a water inlet pipe and a water outlet pipe arranged on the barrel cover, and filter media are arranged inside the barrel body. Dirt accumulates at the bottom of the barrel body. Whether cleaning the internal filter media or the barrel body, it is necessary to remove the filter media for manual cleaning.

[0004] The patent with the publication number CN208726944U discloses a circulating flushing type filtering device for water quality filtration. A sedimentation chamber for placing sediments is arranged at the bottom of the filter barrel, and a circulating water outlet and a sewage outlet are arranged on the sedimentation chamber; this design is provided with a sedimentation chamber at the bottom of the filter barrel. Sewage and dirt discharged from the sewage discharge pipeline of the sewage pass through the sedimentation chamber to slowly flow and precipitate the dirt. After the sewage is precipitated, it can be discharged into the water tank for filtration again, and the precipitated dirt is regularly discharged through the sewage outlet; however, it is difficult for the conical sedimentation chamber to ensure the full discharge of the deposited dirt, and instead it is easy to block the sewage outlet, and the cleaning effect is not good. How to more quickly and simply clean the aquarium filter barrel is of great significance to the actual use experience of users. Summary of the Utility Model

[0005] 1. Technical Problems to be Solved by the Utility Model

[0006] Aiming at the inconvenient cleaning and cumbersome operation of the filter barrel for aquarium breeding in the prior art, the utility model intends to provide a filter barrel for aquarium breeding, which does not require removing the filter media, can quickly realize the flushing and cleaning of the barrel body of the filter barrel itself, is convenient for users to operate, and is clean and hygienic.

[0007] 2. Technical Solutions

[0008] To achieve the above object, the technical solution provided by the utility model is as follows:

[0009] The utility model discloses a filter barrel for aquaculture, comprising:

[0010] The barrel body, the inner cavity of the barrel body is used to place the filter assembly;

[0011] A sewage pipe is arranged at the bottom of the barrel body, and a sewage channel is arranged in the sewage pipe. A rotating core is arranged in the sewage channel for rotation, and a through-turning channel is arranged inside the rotating core.

[0012] A control switch is provided on the sewage pipe outside the barrel body. The control switch is connected to the rotating core and is used to control the rotation of the rotating core in the sewage channel. When the rotating core rotates to the point where the turning channel is connected to the sewage channel, the sewage channel is connected to the inner cavity of the barrel body; when the rotating core rotates to the point where the turning channel and the sewage channel are offset, the rotating core closes the sewage channel so that the sewage channel is not connected to the inner cavity of the barrel body.

[0013] In this solution, a drain pipe is arranged at the bottom of the barrel body, and flushing water can be directly injected into the barrel body to flush the dirt at the bottom, and then the dirt can be directly discharged to the outside through the drain pipe. There is no need to remove the filter component in the barrel body during the flushing process, and the operation is more convenient; and a rotating core with a steering channel is arranged in the inner cavity of the drain pipe to cooperate with it. By controlling the rotation direction of the rotating core, the drain pipe is in a connected state for discharge of sewage, or in an open state, which does not affect the normal filtering state of the filter barrel, avoids overflow through the bottom drain pipe, and ensures safety of use. The on and off state of the drain pipe requires the user to actively control the different position angles of the rotating core to avoid accidental overflow, thereby further improving safety.

[0014] As a more preferred design of the filter barrel, it also includes a barrel cover detachably connected to the barrel body, and the barrel cover is provided with a water inlet pipe and a water outlet pipe; a filter assembly is provided in the barrel body, and the filter assembly is provided with a water inlet channel extending downward to the lower part of the barrel body cavity, and the water inlet pipe is connected to the top of the water inlet channel; the water outlet pipe is connected to the upper part of the barrel body cavity.

[0015] In order to realize the specific installation of the control switch, further, a mounting portion for mounting the control switch is provided on the sewage pipe, and a connecting rod is provided at the bottom of the control switch. The connecting rod rotates and fits through the inner cavity of the mounting portion and is inwardly connected to the rotating core. Rotating the control switch can drive the rotating core to rotate synchronously in the sewage channel. Specifically, a mounting slot can be provided on the rotating core, and the connecting rod fits into the mounting slot.

[0016] To precisely control the rotation amplitude of the rotating core, further, a limiting slot is circumferentially provided on the side wall of the installation part, and a limiting part corresponding to the connecting rod is provided and extends into the limiting slot. The limiting slot is used to limit the rotation angle of the connecting rod, so that the sewage discharge channel and the inner cavity of the barrel can be in a connected state or a disconnected state. For example, when the steering channel is parallel to the sewage discharge channel, it is in a connected state, and when the steering channel is vertically crossed with the sewage discharge channel, it is in a closed and disconnected state.

[0017] To improve the sealing performance, further, a sealing ring is provided between the connecting rod of the control switch and the inner wall of the installation part. Similarly, further, at least one sealing groove is axially provided on the outer wall of the sewage pipe along the axial extension direction, and the sealing groove surrounds the sewage pipe in a circumferential direction. A sealing ring is placed in the sealing groove for sealing between the sewage pipe and the barrel, effectively preventing water from overflowing.

[0018] To optimize the structure of the barrel, further, a receiving cavity is provided at the bottom of the barrel, which is recessed inward and used to accommodate the sewage pipe. The sewage pipe can be at least partially hidden in the receiving cavity. Preferably, the sewage pipe can be completely hidden in the receiving cavity, thus saving space and making the shape of the barrel beautiful and concise.

[0019] To facilitate the fixed limit of the sewage pipe in the barrel, further, a fixing card slot is circumferentially provided on the outer wall of the rear end of the sewage pipe, and a fixing snap ring is fitted into the fixing card slot. The fixing snap ring is used to fixedly install the sewage pipe on the inner side of the barrel to ensure stable position.

[0020] To ensure the position stability of the rotating core during rotation, further, the control switch is arranged above the sewage pipe and extends downward to be connected to the rotating core. A support part is correspondingly provided at the bottom of the inner cavity of the sewage pipe, and the support part is used to support the rotating core from below. A support plane adapted to the support part is provided at the bottom of the rotating core, and the support part and the connecting rod cooperate up and down to ensure the smooth operation of the rotating core.

[0021] To facilitate the processing and installation of the sewage pipe, further, the sewage pipe includes a front pipe section extending to the outside of the barrel and a rear pipe section extending to the inside of the barrel; the front pipe section and the rear pipe section are connected in a split manner, and the rotating core is installed in the inner cavity of the front pipe section. An external interface is also provided at the front end of the front pipe section for connecting to an external pipeline to achieve drainage.

[0022] Corresponding to the split design of the sewage pipe, further, the front end of the rear pipe section is embedded forward into the inner cavity of the front pipe section, and a sealing ring is provided between the front end of the rear pipe section and the inner wall of the front pipe section to ensure the sealing performance between the two. Description of the Drawings

[0023] Figure 1 It is a schematic structural diagram of the aquarium filter barrel in the embodiment;

[0024] Figure 2 It is a schematic diagram of the internal structure of the aquarium filter bucket in the filtering state in the embodiment;

[0025] Figure 3 It is a schematic diagram of the internal structure of the aquarium filter bucket in the flushing state in the embodiment;

[0026] Figure 4 It is a schematic diagram of the structure of the sewage discharge pipe in the embodiment;

[0027] Figure 5 It is an exploded schematic diagram of the sewage discharge pipe in the embodiment;

[0028] Figure 6 It is a sectional view schematic diagram of the sewage discharge pipe in the embodiment.

[0029] Explanation of the reference numerals in the schematic diagram:

[0030] 100, barrel body; 101, accommodation cavity; 102, filter basket frame; 103, water inlet channel;

[0031] 200, barrel cover; 201, water inlet pipe; 202, water outlet pipe;

[0032] 300, sewage discharge pipe; 301, sewage discharge channel;

[0033] 310, front pipe section; 311, external interface; 312, front splicing part; 313, installation part; 314, limit slot; 315, support part;

[0034] 320, rear pipe section; 321, fixed clamping ring; 322, sealing groove; 323, rear splicing part;

[0035] 330, control switch; 331, connecting rod; 332, sealing ring; 333, rotating core; 334, steering channel. Detailed implementation manners

[0036] To further understand the content of the present invention, the present invention will be described in detail with reference to the accompanying drawings.

[0037] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0038] The utility model is further described below in conjunction with embodiments.

[0039] Example

[0040] Combination Figures 1-6 As shown, a filter barrel for aquaculture of this embodiment includes: a barrel body 100, the inner cavity of the barrel body 100 is used to place the filter assembly; in particular, a sewage pipe 300 is arranged at the bottom of the barrel body 100, and the bottom mentioned here includes the position near the lower area of ​​the barrel body 100. The sewage pipe 300 can be arranged at the bottom surface of the barrel body 100 and extended downward, or the sewage pipe 300 can be arranged at the circumferential side wall of the barrel body 100 and close to the lower area of ​​the barrel body 100, so as to facilitate flushing and discharging the dirt at the bottom. Figure 1 As shown in the figure, the sewage pipe 300 is arranged to extend outward from the circumferential side wall position of the bottom of the barrel body 100. The sewage pipe 300 has a sewage channel 301 connected to the inner cavity of the barrel body 100, and a rotating core 333 is rotatably provided in the sewage channel 301, and a through-turning channel 334 is provided inside the rotating core 333; a control switch 330 is provided on the sewage pipe 300 located outside the barrel body 100, and the control switch 330 is connected to the rotating core 333, and is used to control the rotation of the rotating core 333 in the sewage channel 301. When the rotating core 333 rotates to the turning channel 334 to be connected to the sewage channel 301, the turning channel 334 is connected to the inner cavity of the barrel body 100; when the rotating core 333 rotates to the turning channel 334 to be staggered with the sewage channel 301, the rotating core 333 closes the sewage channel 301, so that the turning channel 334 is not connected to the inner cavity of the barrel body 100.

[0041] In practical application, the filter barrel also includes a barrel cover 200 that is detachably matched with the barrel body 100, and the barrel cover 200 is provided with a water inlet pipe 201 and a water outlet pipe 202. A filter assembly is installed inside the barrel body 100, specifically, a filter basket structure is adopted, and multiple groups of filter materials are fixedly connected through the filter basket frame 102, and a water inlet channel 103 extending downward to the lower part of the inner cavity of the barrel body 100 is provided inside the filter assembly, and the top of the water inlet channel 103 is connected to the water inlet pipe 201. In the filtering state, combined with Figure 2As shown by the arrow direction, after the water flow enters from the water inlet pipe 201, it directly reaches the lower part of the barrel body 100 through the water inlet channel 103, then is filtered layer by layer upward, and is discharged through the water outlet pipe 202 above. With this design of the filter barrel, both the water inlet pipe 201 and the water outlet pipe 202 are arranged on the barrel cover 200, which is convenient for unified pipe connection and has a more concise shape, saving volume distribution. At this time, the water inlet channel 103 in the filter component is connected to the water inlet pipe 201, so that the water flow at the top directly reaches the bottom of the filter component first and is filtered layer by layer from bottom to top, thus meeting the requirements of top water inlet and top water outlet. The filtered dirt is mainly concentrated in the bottom area of the barrel body 100 due to sedimentation and filtration effects. Correspondingly, setting a sewage discharge pipe 300 at the bottom of the barrel body 100 can achieve the best sewage discharge effect. When discharging sewage, the original water inlet pipe 201 is still directly used as the water inlet pipe, so that the flushing water flow can quickly reach the bottom of the barrel body 100 through the water inlet channel 103. It is not necessary to take out the filter component, improving convenience. Compared with water inlet from the upper surface of the filter component, it also completely avoids the obstruction of the filter component and ensures the flushing efficiency. In this embodiment, a sewage discharge pipe 300 is arranged at the bottom of the barrel body 100, and a rotatable rotating core 333 is arranged in the inner cavity of the sewage discharge pipe 300. The on-off state of the sewage discharge pipe 300 is controlled by different rotating positions of the rotating core 333. In the normal filtering state, as Figure 2 shown, at this time, the rotating core 333 rotates to close the inner cavity of the sewage discharge pipe 300, that is, the sewage discharge channel 301, and the sewage discharge channel 301 cannot communicate with the inner cavity of the barrel body 100, so that the sewage discharge pipe 300 is in a non-sewage discharge state, and the water flow is still discharged through the water outlet pipe 202 after being filtered layer by layer upward. When the barrel body 100 needs to be flushed, after the water flow enters from the water inlet pipe 201, it directly reaches the lower part of the barrel body 100 through the water inlet channel 103, as Figure 4 and Figure 6 shown. At this time, the rotating core 333 rotates to a state where the turning channel 334 is parallel and connected to the sewage discharge channel 301, so that the sewage discharge channel 301 is in communication with the inner cavity of the barrel body 100, and the flushing water flow is directly discharged through the sewage discharge pipe 300, realizing the flushing and cleaning process. During this process, it is not necessary to take out the filter component, nor does the user need to manually clean it. It is clean, hygienic and convenient to operate, greatly improving the user experience.

[0042] Combined with Figure 4 and Figure 5As shown in the figure, as a preferred installation design of the control switch 330, optionally, the sewage discharge pipe 300 is provided with an installation part 313 for fitting and installing the control switch 330. The installation part 313 can be arranged at the upper wall surface position of the sewage discharge pipe 300 and extend upward in a cylindrical shape. A connecting rod 331 extending downward is provided at the bottom of the control switch 330. The connecting rod 331 is rotationally fitted through the inner cavity of the installation part 313 and is connected inward to the rotating core 333. Rotating the control switch 330 can drive the rotating core 333 to rotate synchronously in the sewage discharge channel 301. More specifically, an installation slot extending downward is opened at the top of the rotating core 333. The connecting rod 331 is fitted and embedded in the installation slot. Preferably, the cross-sections of both the installation slot and the connecting rod 331 are rectangular to ensure stable connection, and the connecting rod 331 can drive the rotating core 333 to rotate synchronously.

[0043] In this embodiment, it is preferred that the rotating core 333 adopts a near-spherical design, that is, it has an arc-shaped inner wall that can fit and adapt to the inner wall of the sewage discharge pipe 300 around it. Thus, there is a good fit between the rotating core 333 and the inner wall of the sewage discharge pipe 300, which not only ensures that the rotation process of the rotating core 333 is flexible and unobstructed, but also prevents water from overflowing from the gap between the rotating core 333 and the inner wall of the sewage discharge pipe 300. Preferably, the steering channel 334 is centrally arranged in the rotating core 333 and penetrates both ends. When the steering channel 334 is parallel to the axial direction of the sewage discharge pipe 300, as Figure 5 shown in the state in the figure, at this time, the steering channel 334 and the sewage discharge channel 301 form a communication channel for sewage discharge as a whole; the rotating core 333 rotates 90° to the left or right in the horizontal plane. At this time, that is, the steering channel 334 rotates to a state of being vertically crossed with the sewage discharge channel 301. Both ends of the steering channel 334 are blocked and closed by the inside of the sewage discharge pipe 300, and the entire sewage discharge channel 301 is blocked and closed radially by the rotating core 333, so that it cannot communicate with the inner cavity of the barrel 100.

[0044] To ensure precise control of the rotation position of the rotating core 333 and enable the user to directly rotate the rotating core 333 to an appropriate angle, preferably, a limiting slot 314 is circumferentially opened on the side wall of the installation part 313, and a limiting part is correspondingly provided on the connecting rod 331 and extends into the limiting slot 314. The limiting slot 314 is used to limit the rotation angle of the connecting rod 331, so that the steering channel 334 and the sewage discharge channel 301 can be in a communicating state or a non-communicating state. As Figure 5As shown, the limit slot 314 can be in the form of an open slot, extending downward from the top wall of the installation part 313 by a certain distance. The angular range of the limit slot 314 can reach 90°, that is, the rotation angle of the control switch 330 can reach 90°, enabling the change between the state where the steering channel 334 is parallel and connected to the sewage channel 301 and the state where the steering channel 334 is vertically crossed with the sewage channel 301. In practice, the control switch 330 has a rotation handle for easy user operation, and anti-slip teeth can be provided on the rotation handle. Indicator marks can be set on the wall of the sewage pipe 300 to distinguish the current state of the rotation core 333.

[0045] Combined with Figure 5 and Figure 6 As shown, further, a sealing ring 332 is provided between the connecting rod 331 of the control switch 330 and the inner wall of the installation part 313. Specifically, the connecting rod 331 can adopt a stepped design, and the installation part 313 has a boss adapted to cooperate with the step, as Figure 6 shown, the sealing ring 332 is arranged between the lower step of the connecting rod 331 and the inner boss of the installation part 313 to maintain good sealing performance. Similarly, further, at least one sealing groove 322 is axially provided on the outer wall of the sewage pipe 300 along the extending direction. The sealing groove 322 surrounds the sewage pipe 300 in a circumferential direction, and a sealing ring is placed in the sealing groove 322 for sealing between the sewage pipe 300 and the barrel body 100. As Figure 6 shown, specifically, two sealing grooves 322 and sealing rings are provided in the area where the sewage pipe 300 is inside the barrel body 100 to ensure the sealing performance between the sewage pipe 300 and the barrel body 100. The sewage pipe 300 can extend outward through the barrel body 100 for drainage, and at the same time, there is good sealing performance between them to prevent water leakage. Further, for stable installation, a fixed card slot is circumferentially provided on the outer wall of the rear end of the sewage pipe 300, and the fixed clamping ring 321 is fitted into the fixed card slot. The fixed clamping ring 321 is used to fixedly install the sewage pipe 300 inside the barrel body 100. The fixed clamping ring 321 is located behind the two groups of sealing rings, and can stably clamp the sewage pipe 300 inside the barrel body 100 to ensure position stability.

[0046] The filter barrel of this embodiment is applied to aquaculture. Especially at present, many families like to breed aquatic organisms. When the filter barrel is used in a home environment, its volume compactness and aesthetics are also very important. In this embodiment, preferably, a receiving cavity 101 is provided at the bottom of the barrel body 100, which is recessed inward for receiving the sewage pipe 300, and the sewage pipe 300 can be at least partially hidden in the receiving cavity 101. As Figure 1 shown, preferably, the sewage pipe 300 can be completely hidden in the receiving cavity 101 to reduce the overall volume occupied by the barrel body 100, making it more convenient to install and use in a home environment, and the shape is also more beautiful and simple.

[0047] AsFigure 6 As shown, in practice, for the convenience of the user to perform the switch rotation operation, the control switch 330 can be arranged above the sewage discharge pipe 300 and extend downward to be connected to the rotating core 333. Based on this, a support portion 315 is correspondingly provided at the bottom of the inner cavity of the sewage discharge pipe 300. The support portion 315 can extend a certain length along the axial direction of the sewage discharge pipe 300. The support portion 315 is used to support the rotating core 333 from below, and a support plane adapted to the support portion 315 is provided at the bottom of the rotating core 333. The bottom support portion 315 and the top connecting rod 331 are used to form a two-way support control for the rotating core 333 to ensure its stable position and the position accuracy during repeated rotation in the long-term use process.

[0048] In practice, for the convenience of installation and processing, further, in combination with Figure 5 and Figure 6 As shown, the sewage discharge pipe 300 includes a front pipe section 310 extending to the outside of the barrel body 100 and a rear pipe section 320 extending to the inside of the barrel body 100; the front pipe section 310 and the rear pipe section 320 are detachably connected. And to ensure sealing, the front end of the rear pipe section 320 is embedded and installed forward in the inner cavity of the front pipe section 310, and a sealing ring 332 is provided between the front end of the rear pipe section 320 and the inner wall of the front pipe section 310. More specifically, the rear end of the front pipe section 310 has a front splicing portion 312, the front end of the rear pipe section 320 has a rear splicing portion 323, and the front end of the rear splicing portion 323 can be embedded inward into the inner cavity surrounded by the front splicing portion 312, that is, the inner cavity of the sewage discharge pipe 300. And a convex block is provided on the front splicing portion 312, and a corresponding clamping groove is provided on the rear splicing portion 323. When the front splicing portion 312 and the rear splicing portion 323 are correspondingly clamped, the convex block on the front splicing portion 312 is embedded into the clamping groove of the rear splicing portion 323 to achieve a tight installation fit. In this embodiment, the rotating core 333 is installed in the inner cavity of the front pipe section 310, and an external interface 311 is further provided at the front end of the front pipe section 310 for connecting an external pipeline to achieve drainage.

[0049] For the filter barrel for aquaculture in this embodiment, on the basis of the traditional filtering function, by adding a bottom sewage discharge pipe 300, it is possible to directly introduce flushing water into the filter barrel to reach the bottom of the barrel body 100 for flushing dirt without removing the filter assembly, and then use the sewage discharge pipe 300 to directly discharge sewage, greatly reducing the operation intensity and convenience of the user. And a rotating core 333 is provided in the sewage discharge pipe 300 to control the on-off state, which does not affect the normal use of the filtering function and can effectively prevent water from overflowing outward. It requires the user to take the initiative to operate to discharge sewage, and the drainage safety is improved, avoiding inconvenience caused by accidental water overflow.

[0050] The above has schematically described the present utility model and its implementation manners. This description is not restrictive and is only one of the implementation manners of the present utility model. In fact, it is not limited thereto. Therefore, if those of ordinary skill in the art are inspired by it and, without departing from the gist of the creation of the present utility model, design similar structural manners and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of the present utility model.

Claims

1. A filter barrel for aquaculture, comprising: A barrel body (100), wherein the inner cavity of the barrel body (100) is used for placing a filter assembly; The invention is characterized in that: a sewage pipe (300) is arranged at the bottom of the barrel body (100), a sewage channel (301) is arranged in the sewage pipe (300), a rotating core (333) is rotatably arranged in the sewage channel (301), and a through-going turning channel (334) is arranged inside the rotating core (333); A control switch (330) is provided on the sewage pipe (300) located outside the barrel body (100). The control switch (330) is connected to the rotating core (333) and is used to control the rotation of the rotating core (333) in the sewage channel (301). When the rotating core (333) rotates to the point where the turning channel (334) is connected to the sewage channel (301), the sewage channel (301) is connected to the inner cavity of the barrel body (100); when the rotating core (333) rotates to the point where the turning channel (334) is offset from the sewage channel (301), the rotating core (333) closes the sewage channel (301) so that the sewage channel (301) is not connected to the inner cavity of the barrel body (100).

2. The filter barrel for aquaculture according to claim 1, characterized in that: The invention also comprises a barrel cover (200), on which a water inlet pipe (201) and a water outlet pipe (202) are provided; a filter assembly is provided in the barrel body (100), and a water inlet channel (103) is provided in the filter assembly, extending downward to the lower part of the inner cavity of the barrel body (100); the water inlet pipe (201) is connected to the top of the water inlet channel (103); and the water outlet pipe (202) is connected to the upper part of the inner cavity of the barrel body (100).

3. The filter barrel for aquaculture according to claim 1, characterized in that: The sewage pipe (300) is provided with a mounting portion (313) for mounting a control switch (330). A connecting rod (331) is provided at the bottom of the control switch (330). The connecting rod (331) rotates and passes through the inner cavity of the mounting portion (313) and is connected inwardly to the rotating core (333). Rotating the control switch (330) can drive the rotating core (333) to rotate synchronously in the sewage channel (301).

4. The filter barrel for aquaculture according to claim 3, characterized in that: A limiting groove (314) is provided on the side wall of the mounting portion (313) in the circumferential direction, and a limiting portion is correspondingly provided on the connecting rod (331) and extends into the limiting groove (314). The limiting groove (314) is used to limit the rotation angle of the connecting rod (331) so that the sewage discharge channel (301) and the inner cavity of the barrel body (100) can be in a connected state or a disconnected state.

5. The filter barrel for aquaculture according to claim 3, characterized in that: A sealing ring (332) is provided between the connecting rod (331) of the control switch (330) and the inner wall of the mounting portion (313).

6. A filter barrel for aquaculture according to any one of claims 1 to 5, characterized in that: The bottom of the barrel body (100) is provided with an inwardly recessed accommodation cavity (101) for accommodating a sewage discharge pipe (300), and the sewage discharge pipe (300) can be at least partially hidden in the accommodation cavity (101).

7. The filter barrel for aquaculture according to claim 1, characterized in that: At least one sealing groove (322) is provided on the outer wall of the sewage pipe (300) along the axial extension direction. The sealing groove (322) surrounds the sewage pipe (300) in a circle along the circumference of the sewage pipe (300). A sealing ring is placed in the sealing groove (322) for sealing between the sewage pipe (300) and the barrel body (100).

8. A filter barrel for aquaculture according to any one of claims 1 to 5, characterized in that: The control switch (330) is arranged above the sewage pipe (300) and extends downward to be connected with the rotating core (333). A support portion (315) is correspondingly provided at the bottom of the inner cavity of the sewage pipe (300). The support portion (315) is used to support the rotating core (333) from below. The bottom of the rotating core (333) is provided with a support plane adapted to the support portion (315).

9. A filter barrel for aquaculture according to any one of claims 1 to 5, characterized in that: The sewage pipe (300) comprises a front pipe section (310) extending to the outside of the barrel body (100), and a rear pipe section (320) extending to the inside of the barrel body (100); the front pipe section (310) and the rear pipe section (320) are connected in a split manner, the rotating core (333) is installed in the inner cavity of the front pipe section (310), and the front end of the front pipe section (310) is also provided with an external interface (311) for connecting an external pipeline.

10. The filter barrel for aquaculture according to claim 9, characterized in that: The front end of the rear pipe section (320) is embedded forwardly in the inner cavity of the front pipe section (310), and a sealing ring (332) is provided between the front end of the rear pipe section (320) and the inner wall of the front pipe section (310).

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