Solid-liquid separation fish closestool

Abstract

The utility model relates to the technical field of fishery breeding, in particular to a solid-liquid separation fish closestool. The solid-liquid separation fish closestool comprises a box body and a solid-liquid separation device. A liquid outlet pipeline is arranged at the bottom of the box body, and the solid-liquid separation device is installed at the bottom of the box body. The solid-liquid separation device comprises a collection pipe I, a collection pipe II and a separation pipe. A separation bin is formed between the separation pipe and the second collection pipe and is suitable for separating solid-liquid mixed liquid. A gap is formed between the separation pipe and the bottom of the box body and is communicated with the separation bin. Water and waste in the box body enter the separation bin through the gap, under the action of gravity, solid particles in the water move downwards and are precipitated in the first collecting pipe, and the water rises through the separation bin and is discharged through the second collecting pipe, so that solid-liquid separation is realized. The whole device is simple in structure, low in price and good in separation effect, and the problems that in the prior art, when a device is used for treating waste in water, the treatment process is complex, the treatment cost is high, and the treatment efficiency is not high are effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of fishery breeding, in particular to a solid-liquid separation fish toilet. Background Art

[0002] In the field of fishery recirculating aquaculture, water quality management is one of the key factors in maintaining efficient aquaculture. Water quality directly affects the health and growth rate of fish. Therefore, it is crucial to ensure the effective control of pollutants in the water. Traditional water quality management methods face many challenges, especially in dealing with fish residual bait and feces.

[0003] When fish are farmed, a large amount of fish residual bait and feces settle and scatter on the bottom of the pond every day. Fish residual bait and feces are the main reasons for the increase in ammonia nitrogen and nitrite content in the water. Ammonia nitrogen and nitrite are not only harmful to aquatic organisms, but also can significantly reduce water quality and increase the risk of disease. In traditional aquaculture systems, these wastes usually need to be treated through complex biological filtration systems, which not only increases operating costs but is often inefficient. In addition, traditional aquaculture systems often need to use additional mechanical or chemical means to deal with these wastes, which not only increases operating costs but may also have a negative impact on the environment. For example, excessive use of chemicals may lead to the accumulation of harmful substances in the water, thereby affecting the health of fish and the sustainability of aquaculture. Utility Model Content

[0004] In order to solve the problems in the prior art that the aquaculture system has a complicated treatment process, high cost and low treatment efficiency when treating waste in the water body, the utility model provides a solid-liquid separation fish toilet.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows: a solid-liquid separation fish toilet, comprising a box body and a solid-liquid separation device, the bottom of the box body is provided with a liquid outlet pipe, the liquid outlet pipe is suitable for discharging the remaining bait and feces deposited at the bottom of the box body out of the box body; the solid-liquid separation device is installed at the bottom of the box body, suitable for solid-liquid separation of water and waste in the box body; the solid-liquid separation device comprises a collecting pipe 1, a collecting pipe 2 and a separation pipe; the collecting pipe 1 is installed below the liquid outlet pipe; the collecting pipe 2 is arranged in the collecting pipe 1, one end of the collecting pipe 2 passes through the liquid outlet pipe and extends into the interior of the box body, and the other end passes through the collecting pipe 1; the separation pipe is arranged in the box body and sleeved on the outside of the collecting pipe 2, and the end of the separation pipe away from the collecting pipe 1 is higher than the liquid level height of the box body; a separation chamber is formed between the separation pipe and the collecting pipe 2, one end of the separation chamber is connected to the collecting pipe 1, and the other end is connected to the collecting pipe 2; a gap is provided between the separation pipe and the bottom of the box body, and the gap is connected to the separation chamber. The water and waste in the box body enter the separation chamber through the gap, and the separation chamber separates the entering water and solid waste, so that the separated water is discharged from the second collecting pipe and the solid waste is deposited in the first collecting pipe.

[0006] As a further improvement of the above scheme, a filter screen 1 is provided in the separation tube, and the filter screen 1 is provided with a connector 1 and a through hole. The aperture of the through hole is larger than the diameter of the collecting tube 2, and the collecting tube 2 is suitable for passing through the through hole. A connector 2 is provided on the collecting tube 2, and the connector 1 is detachably connected to the connector 2. The separation tube is detachably installed on the outside of the collecting tube 2 through the connector 1.

[0007] As a further improvement of the above solution, the first connecting member is a bolt, the second connecting member is provided with a thread groove, and the bolt is fixed to the outer side of the second collecting pipe through the thread groove.

[0008] As a further improvement of the above scheme, the connecting member 1 is an insert block, and the insert block is provided with at least one limit block. The connecting member 2 is provided with a slot and a plurality of limit grooves, and the plurality of limit grooves are arranged in sequence along the axial direction of the collecting tube 2, and each of the limit grooves is respectively connected to the slot; the slot is aligned with the insert block, and the limit block fixes the separation tube by cooperating with one of the limit grooves.

[0009] As a further improvement of the above solution, the diameter of the separation tube is larger than the diameter of the liquid outlet pipe.

[0010] As a further improvement of the above solution, the diameter of the second collecting tube is smaller than the diameter of the first collecting tube.

[0011] As a further improvement of the above solution, the second collecting tube is threadedly connected to the first collecting tube.

[0012] As a further improvement of the above solution, the collecting tube 1 is a U-shaped tube.

[0013] As a further improvement of the above scheme, the collecting pipe 1 includes a vertical section 1, an arc section and a vertical section 2, one end of the arc section is connected to the vertical section 1, and the other end of the arc section is connected to the vertical section 2; the vertical section 1 is threadedly installed below the liquid outlet pipe.

[0014] As a further improvement of the above solution, the height of the vertical section 2 is higher than the height of the vertical section 1 and the height of the vertical section 2 is flush with the height of the liquid level in the box.

[0015] As a further improvement of the above solution, the arc segment and the vertical segment 1 are detachably connected.

[0016] As a further improvement of the above solution, the arc segment and the second vertical segment are detachably connected.

[0017] As a further improvement of the above solution, a second filter screen is installed in the second vertical section, and the second filter screen is suitable for filtering the water entering the second vertical section.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] (1) The utility model provides a solid-liquid separation device, which is provided at the bottom of the box body, and can effectively separate the solid waste and water deposited at the bottom of the box body. By providing a gap between the separation tube and the bottom of the box body, and providing a separation chamber between the separation tube and the collecting tube 2, the solid-liquid mixture (i.e., water, residual bait, and fish feces, etc.) at the bottom of the box body can enter the separation chamber through the gap. Under the action of gravity, the solid particles in the water move downward and settle in the collecting tube 1, while the water rises through the separation chamber and is discharged through the collecting tube 2, thereby achieving solid-liquid separation. The entire device has a simple structure, low price, and good separation effect, and can effectively solve the problems of high cost and low treatment efficiency of the devices in the prior art for treating waste in water bodies.

[0020] (2) The collecting tube 1 is set to a U-shaped structure, so that the collecting tube 1 can also perform secondary separation on the solid-liquid mixture, and the vertical section 1 and the arc section realize secondary precipitation of solid particles in the solid-liquid mixture, and the separated water can be discharged through the upper end of the vertical section 2. The solid particles remaining in the water are further removed, and the separation effect of the entire device is improved.

[0021] (3) By setting up a filter, the filter can further separate some suspended matter from water and further remove impurities in the water, making the water discharged through the collection pipe 2 cleaner, providing convenience for subsequent water treatment.

[0022] (4) The solid-liquid separation device in the utility model has the characteristics of high separation effect and economical device cost, which can effectively reduce the dependence on complex and expensive traditional filtration systems in the breeding system, thereby simplifying the structure of the entire breeding system and reducing breeding costs.

[0023] (5) The solid-liquid separation device in the utility model can replace the chemical treatment method in the prior art to treat the waste in the aquaculture system, effectively reduce the emission of pollutants, and make the aquaculture system more environmentally friendly.

[0024] (6) By setting up a solid-liquid separation device, the fish feces and water in the aquaculture system can be effectively separated, the content of harmful substances in the water can be effectively controlled and reduced, the growth environment of fish can be improved, thereby increasing fish production and increasing the income of farmers. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A three-dimensional diagram of the solid-liquid separation fish toilet provided by the utility model.

[0026] Figure 2 This is a front view of the solid-liquid separation fish toilet provided by the utility model.

[0027] Figure 3 This is an attached view of the solid-liquid separation fish toilet provided by the utility model.

[0028] Figure 4 For this utility model Figure 3 Cross-sectional view along AA.

[0029] Figure 5 For this utility model Figure 4 Enlarged schematic diagram of point B in the middle.

[0030] Figure 6 It is an enlarged schematic diagram of point B when the first connecting member in the utility model is an insert block.

[0031] Figure 7 It is an enlarged schematic cross-sectional view of the solid-liquid separation device in the utility model.

[0032] Figure 8 It is an enlarged schematic cross-sectional view of the collecting tube 1 in the present invention.

[0033] In the figure: 1, box body; 11, liquid outlet pipe; 2, solid-liquid separation device; 21, collecting pipe 1; 211, vertical section 1; 212, arc section; 213, vertical section 2; 214, filter screen 2; 22, collecting pipe 2; 221, connecting piece 2; 222, threaded groove; 223, slot; 224, limit groove; 23, separation pipe; 231, filter screen 1; 232, through hole; 233, bolt; 234, plug block; 235, limit block; 24, separation chamber; 25, gap. DETAILED DESCRIPTION

[0034] The present invention is further described below in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0035] In the description of the present utility model, it should be noted that for directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating directions and positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and cannot be understood as limiting the specific protection scope of the present utility model. The terms "first", "second" and the like in the specification and claims of the present utility model are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. The terms "including" and "having" in the specification and claims of the present utility model and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device including a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0036] Reference Figure 1-4 As shown, an embodiment of the utility model provides a solid-liquid separation fish toilet, comprising a box body 1 and a solid-liquid separation device 2. A liquid outlet pipe 11 is provided at the bottom of the box body 1, and the liquid outlet pipe 11 is suitable for discharging the remaining bait and feces deposited at the bottom of the box body 1 out of the box body 1. The solid-liquid separation device 2 is installed at the bottom of the box body 1, and is suitable for solid-liquid separation of water and waste in the box body 1, effectively solving the problem that the device in the prior art has high cost and low treatment efficiency in treating waste in water.

[0037] The box body 1 in the utility model can be a breeding box, a breeding pond or a breeding tank in a small family breeding system, or a breeding pond in a large commercial breeding farm.

[0038] like Figure 4 , Figure 6 and Figure 8 As shown, the solid-liquid separation device 2 includes a collecting tube 1 21, a collecting tube 2 22 and a separation tube 23. The collecting tube 1 21 is installed below the liquid outlet pipe 11, and the collecting tube 1 21 is suitable for collecting solid particles in the water. The collecting tube 2 22 is arranged in the collecting tube 1 21, one end of the collecting tube 2 22 passes through the liquid outlet pipe 11 and extends into the interior of the box 1, and the other end passes through the collecting tube 1 21. The water after solid-liquid separation can be discharged through the collecting tube 2 22. By setting the separation tube 23, the collecting tube 1 21, and the collecting tube 2 22, the solid-liquid mixture (i.e., water, residual bait, and fish feces, etc.) in the box 1 can be separated into solid and liquid, so that the separated water can be discharged through the collecting tube 2 22, and the separated solid waste can be precipitated into the collecting tube 1 21. The whole device has a simple structure, convenient assembly, and good separation effect. The solid-liquid separation fish toilet has a highly efficient separation effect while the cost of the entire device is relatively economical, which can effectively reduce the dependence on complex and expensive traditional filtration systems in the breeding system, thereby simplifying the structure of the entire breeding system and reducing breeding costs.

[0039] The solid-liquid separation fish toilet of the utility model is suitable for fishery circulating water aquaculture of different scales and types, including small family aquaculture ponds and large commercial aquaculture farms.

[0040] The solid-liquid separation fish toilet of the utility model is suitable for various freshwater and seawater aquaculture, including fish, shrimps, shellfish and the like.

[0041] like Figure 4 and Figure 6As shown, the separation tube 23 is arranged in the box body 1 and sleeved on the outside of the collection tube 2 22. The end of the separation tube 23 away from the collection tube 1 21 is higher than the liquid level of the box body 1, which can prevent the water in the box body 1 from directly entering the collection tube 2 22 through the upper end of the separation tube 23 and failing to perform the solid-liquid separation operation, thereby ensuring the stability during the solid-liquid separation process. A separation chamber 24 is formed between the separation tube 23 and the collection tube 2 22, one end of the separation chamber 24 is connected to the collection tube 1 21, and the other end is connected to the collection tube 2 22. A gap 25 is provided between the separation tube 23 and the bottom of the box body 1, and the gap 25 is connected to the separation chamber 24. The separation chamber 24 effectively separates the water and waste entering through the gap 25. The utility model forms a sleeve structure between the separation tube 23 and the collection tube 22 by sleeve-arranging the separation tube 23 on the outer side of the collection tube 22, and a gap 25 is provided between the separation tube 23 and the bottom of the box body 1, and the gap 25 can form a unique water inlet channel, so that the water in the box body 1 can enter the separation bin 24, and because the separation tube 23 is aligned with the liquid outlet pipe 11, the solid waste in the water entering the separation bin 24 can enter the collection tube 1 21 under the action of its own gravity, and the water body will rise along the separation bin 24 into the collection tube 22, and then be discharged through the collection tube 22, and the above structure can realize the separation operation of the solid waste in the water in the box body 1.

[0042] The specific operation is: start the water pump so that the water and waste in the box body 1 enter the separation chamber 24 through the gap 25. Under the action of gravity, the solid particles in the water body (such as fish feces and residual bait) will enter the collecting tube 1 21 through the liquid outlet pipe 11 and settle in the collecting tube 1 21. The water body will rise through the separation chamber 24 to enter the collecting tube 2 22, and then be discharged through the collecting tube 2 22, thereby achieving solid-liquid separation of the water and solid waste in the box body 1. The whole separation process is simple and convenient, and the separation effect is good. By treating the water in the breeding box through the above structure, the water can be effectively separated from the solid and liquid and the water quality can be efficiently managed, thereby improving the breeding efficiency and environmental sustainability.

[0043] like Figure 4-6As shown, a filter screen 1 231 is provided in the separation tube 23, and the filter screen 1 231 can effectively filter the solid-liquid mixture in the separation bin 24, prevent some suspended matter from entering the collection tube 2 22 along with the water body, and further improve the effect of solid-liquid separation. The filter screen 1 231 is provided with a connector 1 and a through hole 232, the aperture of the through hole 232 is larger than the diameter of the collection tube 2 22, and the collection tube 2 22 is suitable for passing through the through hole 232. By setting the through hole 232, when the separation tube 23 and the collection tube 2 22 are installed, the collection tube 2 22 can pass through the through hole 232 on the filter screen, and the through hole 232 can limit the collection tube 2 22. The collection tube 2 22 is provided with a connector 2 221, and the connector 2 221 is fixed to the outside of the collection tube 2 22, and the connector 1 is detachably connected to the connector 2 221. The separation tube 23 is detachably mounted on the outer side of the collection tube 22 through the connector 1, and the detachable mounting facilitates the installation and removal of the separation tube 23. At the same time, when necessary, the separation tube 23 can be removed from the collection tube 22 to clean itself and the filter 1 231, so as to avoid the situation that the filter 1 231 is easily blocked due to long-term use, resulting in the inability of water to enter the collection tube 22.

[0044] In some embodiments, Figure 5 As shown, the first connector is a bolt 233, and the second connector 221 is provided with a thread groove 222, and the bolt 233 is fixed to the outer side of the second collecting tube 22 through the thread groove 222. By setting the first connector as a bolt 233 and the second connector 221 being provided with a thread groove 222, it is possible to rotate the separation tube 23 so that the bolt 233 is screwed into the thread groove 222, so as to achieve the connection between the separation tube 23 and the second collecting tube 22, and the connection operation is simple and the connection effect is good. In addition, through the structure of the bolt 233, the size of the gap 25 between the separation tube 23 and the bottom of the box body 1 can also be adjusted according to actual needs, so that the amount of water entering the separation bin 24 can be controlled to meet different needs, thereby improving the practicality of the entire device.

[0045] In other embodiments, Figure 6As shown, the first connector is an insert block 234, and at least one stopper block 235 is provided on the insert block 234. The second connector 221 is provided with a slot 223 and a plurality of stopper grooves 224. The plurality of stopper grooves 224 are sequentially arranged along the axial direction of the second collecting tube 22, and each stopper groove 224 is connected to the slot 223 respectively; the slot 223 is aligned with the insert block 234, and the stopper block 235 fixes the separation tube 23 by cooperating with one of the stopper grooves 224. When the separation tube 23 needs to be installed, the slot 223 is aligned with the insert block 234, and then the separation tube 23 is rotated so that the stopper block 235 on the insert block 234 is aligned with the stopper groove 224, and then the insert block 234 is pushed downward so that the stopper block 235 is inserted into the stopper groove 224. Under the interaction of the stopper block 235 and the stopper groove 224, the first connector can be effectively fixed in the second connector 221, thereby fixing the separation tube 23. In this embodiment, a plurality of limit grooves 224 are provided, and the plurality of limit grooves 224 are provided along the axial direction of the collecting tube 22. In actual operation, the limit block 235 can be adjusted to match one of the limit grooves 224 according to the needs, so as to adjust the distance between the separation tube 23 and the bottom of the box body 1, that is, the size of the gap 25. In this way, the amount of water entering the separation bin 24 can be controlled to meet different needs, thereby improving the practicality of the entire device.

[0046] like Figure 4 As shown, the diameter of the separation tube 23 is greater than the diameter of the liquid outlet pipe 11.

[0047] like Figure 7 As shown, the diameter of the second collecting tube 22 is smaller than the diameter of the first collecting tube 21. This allows the second collecting tube 22 to be inserted into the first collecting tube 21, thus simplifying the space occupied by the entire device.

[0048] The second collecting pipe 22 is threadedly connected to the first collecting pipe 21. The threaded connection can adjust the length of the second collecting pipe 22 extending into the box 1, so that the second collecting pipe 22 can be applied to the box 1 at different depths of water, thereby improving its practicality.

[0049] like Figure 8 As shown, the collecting pipe 1 21 is a U-shaped pipe. The U-shaped structure can perform secondary separation on the water entering the collecting pipe 1 21, so that the separated solid waste can be deposited at the bottom of the vertical section 1 211 and the arc section 212, further improving the separation effect of the entire device.

[0050] like Figure 8As shown, the collecting tube 1 21 includes a vertical section 1 211, an arc section 212 and a vertical section 2 213. One end of the arc section 212 is connected to the vertical section 1 211, and the other end of the arc section 212 is connected to the vertical section 2 213; the vertical section 1 211 is threadedly installed below the liquid outlet pipe 11. The threaded installation method can quickly install and disassemble the collecting tube 1 21. In actual operation, the collecting tube 1 21 can be regularly disassembled and the solid waste accumulated in the collecting tube 1 21 can be cleaned. Through the above operation, the solid waste after separation can be cleaned, which can reduce the complexity and time cost of maintenance work.

[0051] like Figure 4 and Figure 8 As shown, the height of the vertical section 213 is higher than the height of the vertical section 1 211 and the height of the vertical section 213 is flush with the liquid level in the box 1, so that the water after gravity sedimentation separation, secondary separation and filtration through the filter net 214 can be discharged through the vertical section 213 and enter the next stage of processing.

[0052] The arc segment 212 and the vertical segment 1 211 are detachably connected. The detachable structure not only facilitates the arc segment 212 and the vertical segment 1 211 to be cleaned separately, thereby improving the cleaning efficiency, but also enables only the part to be replaced when one part is damaged, thereby achieving the purpose of cost saving.

[0053] The arc segment 212 and the second vertical segment 213 are detachably connected. The detachable structure not only facilitates the cleaning of the arc segment 212 and the second vertical segment 213 separately, thereby improving the cleaning efficiency, but also enables only the part to be replaced when one part is damaged, thereby achieving the purpose of cost saving.

[0054] like Figure 7 As shown, a filter screen 214 is installed in the vertical section 213, and the filter screen 214 is suitable for filtering the water entering the vertical section 213. By setting the filter screen 214, the water in the collection pipe 1 21 can be further filtered to improve the cleanliness of the water after the whole solid-liquid separation device 2 is treated.

[0055] The above describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A solid-liquid separation fish toilet, characterized in that: It includes: A box body (1), wherein a liquid outlet pipe (11) is provided at the bottom of the box body (1); A solid-liquid separation device (2), the solid-liquid separation device (2) is installed at the bottom of the box (1), and the solid-liquid separation device (2) comprises A collecting pipe 1 (21), which is installed below the liquid outlet pipe (11); A second collecting pipe (22) is disposed in the first collecting pipe (21), one end of the second collecting pipe (22) passes through the liquid outlet pipe (11) and extends into the interior of the box (1), and the other end passes through the first collecting pipe (21); and a separation pipe (23), which is arranged in the box body (1) and sleeved on the outer side of the second collecting pipe (22), the end of the separation pipe (23) away from the first collecting pipe (21) being higher than the liquid level of the box body (1); a separation chamber (24) is formed between the separation pipe (23) and the second collecting pipe (22), one end of the separation chamber (24) being connected to the first collecting pipe (21), and the other end being connected to the second collecting pipe (22); a gap (25) is provided between the separation pipe (23) and the bottom of the box body (1), the gap (25) being connected to the separation chamber (24), and the separation chamber (24) separating water and waste entering through the gap (25).

2. The solid-liquid separation fish toilet according to claim 1, characterized in that: A filter screen 1 (231) is provided inside the separation tube (23), and the filter screen 1 (231) is provided with a connector 1 and a through hole (232). The aperture of the through hole (232) is larger than the diameter of the collection tube 2 (22). The collection tube 2 (22) is suitable for passing through the through hole (232). A connector 2 (221) is provided on the collection tube 2 (22), and the connector 1 is detachably connected to the connector 2 (221). The separation tube (23) is detachably mounted on the outer side of the collection tube 2 (22) through the connector 1.

3. The solid-liquid separation fish toilet as claimed in claim 2, characterized in that: The first connecting member is a bolt (233), and the second connecting member (221) is provided with a thread groove (222). The bolt (233) is fixed to the outer side of the second collecting pipe (22) through the thread groove (222).

4. The solid-liquid separation fish toilet as claimed in claim 2, characterized in that: The first connecting member is an insert block (234), and at least one limiting block (235) is provided on the insert block (234). The second connecting member (221) is provided with a slot (223) and a plurality of limiting grooves (224). The plurality of limiting grooves (224) are sequentially arranged along the axial direction of the second collecting tube (22), and each of the limiting grooves (224) is respectively connected to the slot (223); the slot (223) is aligned with the insert block (234), and the limiting block (235) fixes the separation tube (23) by cooperating with one of the limiting grooves (224).

5. The solid-liquid separation fish toilet according to claim 1, characterized in that: The diameter of the separation tube (23) is greater than the diameter of the liquid outlet pipe (11); And / or, the diameter of the second collecting tube (22) is smaller than the diameter of the first collecting tube (21).

6. The solid-liquid separation fish toilet according to claim 1, characterized in that: The second collecting pipe (22) is threadedly connected to the first collecting pipe (21).

7. The solid-liquid separation fish toilet according to claim 1, characterized in that: The collecting tube 1 (21) is a U-shaped tube.

8. The solid-liquid separation fish toilet as claimed in claim 7, characterized in that: The collecting pipe 1 (21) comprises a vertical section 1 (211), an arc section (212) and a vertical section 2 (213); one end of the arc section (212) is connected to the vertical section 1 (211), and the other end of the arc section (212) is connected to the vertical section 2 (213); the vertical section 1 (211) is threadedly installed below the liquid outlet pipe (11).

9. The solid-liquid separation fish toilet according to claim 8, characterized in that: The height of the second vertical section (213) is higher than the height of the first vertical section (211), and the height of the second vertical section (213) is flush with the height of the liquid level in the box (1).

10. The solid-liquid separation fish toilet according to claim 8, characterized in that: The arc segment (212) and the vertical segment 1 (211) are detachably connected; And / or, the arc segment (212) and the second vertical segment (213) are detachably connected.

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