A marine tidal tank

Abstract

The application discloses a kind of water and land tidal tank, including main cylinder, bottom cylinder and partition plate, partition plate is divided into land area and water area by main cylinder, it further includes overflow device and sewer area, water of water area is overflowed to sewer area by overflow device;First sewer pipe and second sewer pipe are arranged in sewer area, the water inlet of first sewer pipe is higher than the water inlet of second sewer pipe, the water inlet of second sewer pipe is not higher than the overflow height of overflow device, and electric ball valve is arranged on the second sewer pipe;First upper water pipe and water pump, water pump is arranged in bottom cylinder.The water area of water and land tidal tank in the application has higher water level when being in low tide level, and has deeper and well-breathable land layer in land area, so as to meet the demand of intertidal zone organisms on land layer and the demand of aquatic organisms on water amount.In addition, the deeper land layer can provide the burrowing organisms in intertidal zone with deeper caves, which is beneficial to their survival and improves the ornamental property of water and land tidal tank.

Description

Technical Field

[0001] This invention relates to the field of aquariums, and particularly to a tidal aquarium. Background Technology

[0002] In existing technologies, the land layer and water within a tidal tank are located in the same area. When the tide rises, the water level submerges the land layer, expelling internal air. When the tide recedes, the land layer emerges, expelling accumulated water and allowing air to re-enter. To maintain good aeration of the land layer for the growth of intertidal organisms, as much of the land layer as possible should be exposed during low tide. However, this requires the water level to drop significantly, which is detrimental to aquatic life. Therefore, a key challenge for those skilled in the art is how to ensure both sufficient land exposure and a relatively high water level within the tidal tank during low tide, thus balancing the growth of both intertidal and aquatic organisms. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to ensure that the terrestrial layer is fully exposed above the water surface when the tidal tank is at low tide, while also ensuring that the tidal tank still has a relatively high water level at low tide, thereby facilitating the growth of intertidal organisms and aquatic organisms.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A type of tidal aquarium includes a main tank and a sump tank, and also includes: A partition plate is disposed inside the main cylinder, dividing the main cylinder into a water zone and at least one land zone. Water in the water zone can overflow into the land zone through the partition plate. The overflow height of the partition plate is lower than the high tide level of the water zone and higher than the low tide level of the water zone. An overflow device and a drainage area, wherein water in the drainage area that is above the low tide level overflows into the drainage area through the overflow device; A first drain pipe, a second drain pipe, and a third drain pipe are provided. The first and second drain pipes are located in the drainage area. The inlet of the first drain pipe is higher than the inlet of the second drain pipe. The inlet of the second drain pipe is not higher than the overflow height of the overflow device. The inlet of the third drain pipe is connected to the land area. The outlets of the first, second, and third drain pipes are all connected to the bottom cylinder. An electric ball valve is provided on the second drain pipe. A first water supply pipe and a water pump, wherein the water pump is installed inside the bottom cylinder, the outlet of the water pump is connected to the inlet of the first water supply pipe, and the outlet of the first water supply pipe is connected to the water area.

[0005] Preferably, in the above-mentioned tidal tank, the water-going area is a backpack set on the side plate of the main tank. The backpack includes a backpack side plate and a backpack bottom plate. The backpack side plate includes a first side plate opposite to the main tank side plate, a front side plate and a rear side plate located between the first side plate and the main tank side plate. The portion of the main tank side plate corresponding to the backpack side plate, the backpack side plate and the backpack bottom plate together form the water-going area. The inlets of the first drain pipe and the second drain pipe are located in the backpack. The overflow device includes: The first fish-blocking comb is disposed on the inner side of the main tank side plate. The first fish-blocking comb and the main tank side plate form a first overflow channel. The lower and upper parts of the first fish-blocking comb are respectively provided with first fish-blocking holes, and the first fish-blocking holes connect the water area and the first overflow channel. A notch is made in the side plate of the main cylinder, and the notch is connected to the upper part of the backpack.

[0006] Preferably, in the above-mentioned tidal tank, the water outlet is an outer pipe set in the water area, and the upper and lower parts of the outer pipe are respectively provided with a second fish-blocking hole communicating with the water area. The first water outlet pipe and the second water outlet pipe are located inside the outer pipe, and the second water outlet pipe is sleeved outside the first water outlet pipe.

[0007] Preferably, in the above-mentioned water-land tidal tank, water in the water area overflows into the land area through the top surface of the partition plate.

[0008] Preferably, in the above-mentioned water-land tidal tank, the top surface of the partition plate is higher than the high tide level of the water area, and a connecting pipe is provided on the upper part of the partition plate. The height of the connecting pipe is higher than the low tide level and lower than the high tide level. Water in the water area overflows into the land area through the connecting pipe, and the flow cross-section of the connecting pipe is adjustable.

[0009] Preferably, in the above-mentioned tidal tank, a tidal pool is provided on the upper surface of the land layer in the land area, and the tidal pool is located below the outlet of the connecting pipe; The walls of the tidal pool are equipped with anti-slip mesh panels.

[0010] Preferably, in the above-mentioned water-land tidal tank, the partition plate includes a partition plate body and a water trough disposed on the side of the partition plate body facing away from the water area. The side of the water trough close to the water area is connected to the water area. The side of the water trough away from the water area has a first trough side plate. The top surface of the first trough side plate is higher than the high tide level of the water area. The connecting pipe is disposed on the first trough side plate.

[0011] Preferably, in the above-mentioned tidal tank, on the side of the water tank near the water area, the upper part of the partition plate body forms a second side plate of the water tank, and the top surface of the second side plate is lower than the low tide level of the water area.

[0012] Preferably, in the aforementioned tidal tank, the partition plate gradually slopes upwards towards the land area, and an anti-slip mesh plate is provided on the side of the partition plate closest to the water area; or, The partition plate is arranged vertically, and an anti-slip mesh plate is provided on the side of the partition plate closest to the water area.

[0013] Preferably, in the above-mentioned tidal tank, a filter layer is provided at the bottom of the land area, the filter layer blocks sand and allows water to flow; a bottom filter frame is provided below the filter layer, the bottom filter frame creates a water flow space between the filter layer and the bottom plate of the land area, and a land layer is provided above the filter layer.

[0014] Preferably, in the above-mentioned tidal tank, the filter layer is formed of nano-bricks or a filter screen.

[0015] Preferably, in the above-mentioned tidal tank, a nanobrick protrusion is provided below the nanobrick, the nanobrick protrusion protrudes into the water flow space, and water in the water flow space can seep upward into the land layer through the nanobrick protrusion and the nanobrick.

[0016] Preferably, the above-mentioned tidal tank further includes a second water supply pipe, the inlet of which is connected to the outlet of the water pump, and the outlet of the second water supply pipe is provided with a branch pipe for changing the direction of water flow. The branch pipe is located within the water flow space to prevent water flow from impacting the filter layer.

[0017] Preferably, the above-mentioned tidal tank also includes a spraying device, which includes at least one nozzle and a spray pipe connected to the nozzle. The inlet of the spray pipe is connected to a fresh water source, and the outlet of the spray pipe is connected to the nozzle, for cleaning the inner wall of the main tank.

[0018] Preferably, in the above-mentioned water-land tidal tank, the bottom tank is provided with multiple sets of partition plates, and the internal area of ​​the bottom tank is divided into multiple functional compartments by the multiple sets of partition plates, and the water entering the bottom tank flows through each of the functional compartments in sequence. The partition plate assembly includes a baffle plate and an overflow plate arranged opposite to each other. A first water flow channel is formed between the bottom of the baffle plate and the bottom plate of the bottom cylinder, and a second water flow channel is formed between the baffle plate and the overflow plate. Water in the upstream functional compartment flows into the downstream functional compartment in sequence through the first water flow channel, the second water flow channel and the space above the overflow plate. Along the direction of water flow, the height of the overflow plate in each of the partition plate groups decreases sequentially.

[0019] Preferably, in the above-mentioned tidal tank, the multiple functional compartments include egg compartments, the overflow plates of the two compartment plate groups that make up the egg compartment are higher than the overflow plates of the other compartment plate groups, and the overflow plate located upstream of the egg compartment is 0-3cm higher than the overflow plate located downstream of the egg compartment.

[0020] Preferably, in the above-mentioned tidal tank, a regulating valve is provided on the third drain pipe to reduce the noise of the third drain pipe.

[0021] Preferably, in the above-mentioned tidal tank, the main tank has one water area and one land area; or, The main cylinder has one water zone and two land zones, the water zone being located between the two land zones and connected to the two land zones via the overflow device.

[0022] As can be seen from the above technical solution, the low tide level of the water area is determined by the overflow height of the overflow device. A higher overflow height ensures a higher low tide level. Therefore, the water area can maintain a relatively high water level even at low tide to meet the water needs of aquatic organisms. On the other hand, the accumulated water within the land area can be drained into the bottom tank through the third drainpipe, thus exposing the entire terrestrial layer and forming a relatively deep and breathable terrestrial layer to meet the needs of intertidal organisms. While the tidal range in the water area is only a few centimeters, the thickness of the breathable terrestrial layer in the land area can reach tens of centimeters, meeting the needs of most intertidal burrowing organisms.

[0023] The tidal tank of this invention maintains a relatively high water level even at low tide, while the land area has a deep terrestrial layer. This satisfies the needs of intertidal organisms for terrestrial depth and the water requirements of aquatic organisms, thus promoting the growth of intertidal organisms. Furthermore, the deep terrestrial layer allows intertidal burrowing organisms to dig deeper burrows, which is beneficial for their survival and enhances the aesthetic appeal. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art are briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0025] Figure 1This is a schematic diagram of the structure of the tidal tank when empty, provided in a specific embodiment of the present invention; Figure 2 A schematic diagram of the structure of the tidal tank at the initial stage of high tide provided in a specific embodiment of the present invention; Figure 3 A schematic diagram of the structure of the tidal chamber at the final stage of high tide provided in a specific embodiment of the present invention; Figure 4 A schematic diagram of the structure of the tidal tank in the initial stage of low tide provided in a specific embodiment of the present invention; Figure 5 A schematic diagram of the structure of the tidal chamber in the final stage of low tide provided in a specific embodiment of the present invention; Figure 6 A schematic diagram of the structure of the tidal tank when the water area is at low tide, provided for a specific embodiment of the present invention; Figure 7 A schematic diagram of the structure of the tidal tank that discharges water through a triple overflow drain pipe, provided in a specific embodiment of the present invention; Figure 8 A schematic diagram of the structure of the tidal tank in an empty tank state when the land layer is a sandy beach, as provided in a specific embodiment of the present invention; Figure 9 A schematic diagram of the structure of the tidal tank at low tide when the land layer is a sandy beach, provided as a specific embodiment of the present invention; Figure 10 A schematic diagram of the structure of the tidal tank at high tide when the land layer is a sandy beach, provided as a specific embodiment of the present invention; Figure 11 A schematic diagram of the structure of the tidal tank in an empty state, provided for a specific embodiment of the present invention; Figure 12 A schematic diagram of the structure of a water-land tidal tank with inclined partitions provided in a specific embodiment of the present invention; Figure 13 A schematic diagram of the structure of a tidal tank including a filter screen provided for a specific embodiment of the present invention; Figure 14 A water level diagram of the bottom tank during low tide provided in a specific embodiment of the present invention; Figure 15 A water level diagram of the bottom tank during high tide provided in a specific embodiment of the present invention; Figure 16 A water level diagram of the bottom tank during low tide provided in a specific embodiment of the present invention; Figure 17 A water level diagram of the bottom tank during high tide provided in a specific embodiment of the present invention; Figure 18 A schematic diagram of the structure of the dual land-water tidal tank in an empty state, provided for a specific embodiment of the present invention; Figure 19 A schematic diagram of the structure of the tidal tank that discharges water through a double overflow drain pipe, provided in a specific embodiment of the present invention; Figure 20 A top view of the tidal tank provided in a specific embodiment of the present invention.

[0026] The names of the components are as follows: 1-Main cylinder, 101-Water zone, 102-Land zone, 103-Divider plate, 1031-Divider plate body, 1032-First tank side plate, 104-Water drain zone, 105-First drain pipe, 106-Second drain pipe, 107-First water inlet pipe, 108-Electric ball valve, 109-Backpack side plate, 110-Backpack bottom plate, 111-Second water inlet pipe, 112-Third drain pipe, 113-Nano brick, 114-Bottom filter rack, 1 15-Fish barrier comb, 116-Tide pool, 117-Land layer, 118-Main tank side plate, 1181-Notch, 119-Anti-slip mesh plate, 120-Connecting pipe, 121-Water tank, 122-Outer pipe, 123-Filter screen, 124-Inner pipe, 2-Bottom tank, 201-Filter device, 202-Baffle plate, 203-Overflow plate, 204-Water pump, 205-Functional compartment, 3-Spraying device, 301-Spraying pipe, 302-Nozzle. Detailed Implementation

[0027] In view of this, the core of the present invention is to design a tidal tank that can ensure a deep and well-aerated terrestrial layer when the tidal tank is at low tide, while also ensuring a high water level inside the tidal tank, thereby facilitating the growth of intertidal organisms and aquatic organisms.

[0028] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] This invention discloses a tidal tank for both land and water; please refer to the appendix. Figure 1 , attached Figure 1 This is a schematic diagram of the structure of an empty tidal tank provided in a specific embodiment of the present invention. The tidal tank includes a main tank 1 and a bottom tank 2. In particular, it also includes a partition plate 103, an overflow device, a water discharge area 104, a first water discharge pipe 105, a second water discharge pipe 106, a third water discharge pipe 112, a first water supply pipe 107, and a water pump 204.

[0030] The partition plate 103 can be a glass plate, connected to the front and rear side plates and the bottom plate of the main cylinder 1, with no gaps at the connection, thus dividing the main cylinder 1 into a land area 102 and a water area 101. The main cylinder 1 contains at least one partition plate 103, such as... Figures 1-13As shown, in an embodiment where the main cylinder 1 has a partition plate 103, the main cylinder 1 is divided into a land area 102 and a water area 101; as Figure 18 As shown, in an embodiment where the main cylinder 1 has two partition plates 103, the main cylinder 1 is divided into two land areas 102 and one water area 101, with the two land areas 102 located on either side of the water area 101. In this embodiment where the main cylinder 1 has two partition plates 103, the two land areas 102 and the water area 101 can be arranged in a straight line, an L-shape, or a T-shape, etc.

[0031] Water in water zone 101 can overflow into land zone 102 through partition plate 103. The overflow height of partition plate 103 is lower than the high tide level of water zone 101, but higher than the low tide level of water zone 101.

[0032] An overflow device is used to allow water in water zone 101 to overflow into drainage zone 104. Optionally, the height of the overflow device is level with the low tide level. A first drain pipe 105 and a second drain pipe 106 are both located in drainage zone 104. The inlet of the first drain pipe 105 is higher than the inlet of the second drain pipe 106, and the inlet of the second drain pipe 106 is not higher than the overflow height of the overflow device. This allows water entering drainage zone 104 to be discharged through the second drain pipe 106 when the water level in water zone 101 reaches the low tide level. The inlet height of the first drain pipe 105 is level with the high tide level, allowing water entering drainage zone 104 to be discharged through both the second drain pipe 106 and the first drain pipe 105 when the water level in water zone 101 reaches the high tide level.

[0033] The inlet of the third drain pipe 112 is connected to the land area 102 and is used to drain water from the land area 102. The outlets of the first drain pipe 105, the second drain pipe 106, and the third drain pipe 112 are all connected to the bottom cylinder 2. An electric ball valve 108 is installed on the second drain pipe 106.

[0034] A water pump 204 is installed inside the bottom cylinder 2. The outlet of the water pump 204 is connected to the inlet of the first water supply pipe 107, and the outlet of the first water supply pipe 107 is connected to the water zone 101. The water pump 204 delivers water from the bottom cylinder 2 into the water zone 101 through the first water supply pipe 107.

[0035] If water zone 101 in the tidal tank is at high tide, then the electric ball valve 108 opens, the second drain pipe 106 begins to drain water, water zone 101 begins to recede, and the water level in water zone 101 begins to drop. When the water level in water zone 101 is lower than the first drain pipe 105, only the second drain pipe 106 drains water. After that, the water flow from the first water inlet pipe 107 and the water flow from the second drain pipe 106 reach equilibrium, and water zone 101 is at low tide.

[0036] The overflow height of the partition plate 103 is higher than the low tide level of water zone 101 but lower than the high tide level of water zone 101. When the water level in water zone 101 exceeds the overflow height of the partition plate 103, the water in water zone 101 overflows into land zone 102 through the partition plate 103, submerging the land layer 117 in land zone 102. During low tide in water zone 101, when the water level in water zone 101 falls below the overflow height of the partition plate 103, the water in water zone 101 no longer flows into land zone 102. Since the third drain pipe 112 remains unobstructed, water in land zone 102 continuously enters the sump 2 through the third drain pipe 112. Given enough time, the accumulated water in land zone 102 can be completely drained, thus exposing the entire land layer 117.

[0037] The low tide level of water zone 101 is determined by the overflow height of the overflow device. A higher overflow height results in a higher low tide level in water zone 101. Therefore, water zone 101 can maintain a relatively high water level even at low tide to meet the water needs of aquatic organisms. On the other hand, the water inside land zone 102 can be drained to the bottom tank 2 through the third drain pipe 112. This exposes the entire land layer 117 within land zone 102, creating a deep and well-aerated land layer to meet the needs of intertidal organisms. While the rise and fall of water zone 101 may only be a few centimeters, the thickness of the land layer 117 in land zone 102 can reach tens of centimeters, sufficient to meet the needs of most intertidal burrowing organisms.

[0038] The tidal tank of this invention features a high water level in the water zone 101 during low tide and a high land layer 117 in the land zone 102. This satisfies the water volume requirements of aquatic organisms and the land layer 117 requirements of intertidal organisms, thus promoting the growth of both aquatic and intertidal organisms. Furthermore, the high land layer 117 allows intertidal burrowing organisms to dig deeper burrows, which is beneficial for their survival and enhances the aesthetic appeal.

[0039] The electric ball valve 108 is controlled by a timer switch and can be either a normally open type (opening when power is off and closing when power is on) or a normally closed type (opening when power is on and closing when power is off). The difference in their use lies in the setting of the timer switch: with a normally open type, the tide rises when the timer switch is on and falls when power is off; with a normally closed type, the opposite is true. The following description uses the normally open type electric ball valve 108 as an example.

[0040] Initial stage of high tide in water area 101: (attached) Figure 6 This is a schematic diagram of the tidal chamber structure when water zone 101 is at low tide. (See attached diagram.) Figure 6When the timer switch is de-energized, the normally open electric ball valve 108 is open, and water zone 101 remains at a low tide level. When the timer switch is energized, the electric ball valve 108 closes, stopping water flow into water zone 101. However, water flow from the first inlet pipe 107 continues as normal, causing the water level in water zone 101 to rise and the water level in the bottom cylinder 2 to drop, as shown in the attached diagram. Figure 2 As shown, attached Figure 2 This is a schematic diagram of the structure of the tidal chamber during the initial stage of high tide.

[0041] The final stage of high tide in water area 101: Please refer to the attached document. Figure 3 , attached Figure 3 This is a schematic diagram of the water-land tidal tank during the final stage of high tide. As the tide rises in water zone 101, when the water level in water zone 101 exceeds the overflow height of the partition plate 103, water overflows into land zone 102, gradually submerging the surface of the land layer 117 and gradually seeping downwards. Due to the slow rate of seepage, the inflow rate of land zone 102 exceeds the seepage rate, causing the water level in land zone 102 to gradually rise. As the water level in land zone 102 rises, the seepage rate also accelerates, eventually reaching a balance between the inflow rate and the seepage rate, maintaining the water level in land zone 102 at a certain height. On the other hand, in water zone 101, as the water level rises and exceeds the inlet of the first drain pipe 105, water flows out through the first drain pipe 105. Subsequently, the inflow rate of the first water supply pipe 107 and the outflow rate of the first drain pipe 105 gradually reach equilibrium, and water zone 101 reaches its high tide level.

[0042] Initial stage of receding tide in water zone 101: When the timer switch is de-energized, the electric ball valve 108 opens, and the second drain pipe 106 is connected, thus significantly increasing the drain flow. The water level in water zone 101 of the main tank 1 begins to drop, while the water level in the sump 2 begins to rise. Please refer to the appendix. Figure 4 , attached Figure 4 This is a schematic diagram of the structure of the tidal chamber during the initial stage of low tide.

[0043] When the water level in water zone 101 drops below the overflow height of partition plate 103, water zone 101 stops supplying water to land zone 102, and the water level in land zone 102 begins to drop. Since the rate of drop in the water level of land zone 102 is much slower than that of water zone 101, when the water level in water zone 101 reaches low tide, the water level in land zone 102 only drops a small portion. However, the water level in land zone 102 will continue to drop over the following period, exposing the land layer 117. Eventually, the entire land layer 117 will fully drain its internal water. Please refer to the appendix. Figure 5 , attached Figure 5 This is a schematic diagram of the structure of the tidal chamber during the final stage of low tide.

[0044] As the water level in water zone 101 drops below the inlet of the first drain pipe 105, water stops flowing from the first drain pipe 105. Subsequently, the water flow from the second drain pipe 106 gradually balances with the water flow from the first inlet pipe 107, and water zone 101 remains at a low tide level. Please refer to the appendix. Figure 6 , attached Figure 6 This is a schematic diagram of the water-land tidal tank when water zone 101 is at low tide.

[0045] Please refer to the attached document. Figure 1 The first drain pipe 105, the second drain pipe 106, and the third drain pipe 112 share a common main outlet. This main outlet should be appropriately enlarged to prevent interference between the water flowing from the first drain pipe 105, the second drain pipe 106, and the third drain pipe 112, thus reducing drainage noise. A filter bag can be placed over the main outlet to filter the water that is about to enter the bottom tank 2.

[0046] The inlet of the first drain pipe 105 determines the water level height of water zone 101 at high tide. A regulating valve is installed on the first drain pipe 105. Adjusting the regulating valve to an appropriate range can reduce the noise of the drain pipe.

[0047] The second drain pipe 106 drains water normally during low tide and receding tide in water area 101. A regulating valve is installed on the second drain pipe 106 to reduce the noise of the second drain pipe 106.

[0048] Pump 204 is preferably a variable frequency pump with adjustable flow rate.

[0049] In one specific embodiment of the present invention, the overflow of water zone 101 into water zone 104 is a backpack overflow, attached Figure 1 - Appendix Figure 6 The backpack overflow is implemented in the following way: A backpack is installed on the outside of the main cylinder side plate 118 of the main cylinder 1. The backpack specifically includes a backpack side plate 109 and a backpack bottom plate 110. The backpack side plate 109 includes a first side plate opposite to the main cylinder side plate 118, a front side plate and a rear side plate located between the first side plate and the main cylinder side plate 118. The front side plate and the rear side plate are opposite to each other, and the front side plate, the rear side plate and the first side plate form a U-shaped structure. The corresponding parts of the main cylinder side plate 118 and the backpack side plate 109, the backpack side plate 109 and the backpack bottom plate 110 together form a drainage area 104. In this embodiment, the drainage area 104 is located outside the water area 101, which ensures that the water area 101 has sufficient space.

[0050] As described above, the water in water area 101 overflows into the drainage area 104 through an overflow device. In this embodiment, the overflow device specifically includes a fish-blocking comb 115 and a notch 1181 opened on the side plate 118 of the main tank. The notch 1181 corresponds to and is connected to the upper end of the backpack. Figure 20As shown, the main tank side plate 118 has a notch 1181 only at the position corresponding to the backpack. After the notch 1181 is set, the height of the position where the notch 1181 is set on the main tank side plate 118 is lower than the height of the position where the notch 1181 is not set on the main tank side plate 118. The fish-blocking comb 115 is set on the inner side of the main tank side plate 118, and the fish-blocking comb 115 and the main tank side plate 118 form a first overflow channel. The lower and upper parts of the fish-blocking comb 115 are respectively provided with first fish-blocking holes, which connect the water area 101 and the first overflow channel. The first overflow channel connects to the backpack through the space at the top of the main tank side plate 118, or in other words, to the water area 104.

[0051] When water is drained through the second drain pipe 106, the water flows as follows: the water in the water area 101 flows into the first overflow channel through the first fish-blocking holes at the top and bottom of the fish-blocking comb 115, and the water in the first overflow channel overflows into the backpack through the top surface of the main tank side plate 118, and then flows into the bottom tank 2 through the second drain pipe 106.

[0052] The first water inlet pipe 107 can be located outside or inside the backpack. In an embodiment where the first water inlet pipe 107 is located inside the backpack, the first water inlet pipe 107 passes through the backpack bottom plate 110 and extends upwards, eventually leading to the water area 101. To save space, the first water inlet pipe 107, the first water outlet pipe 105, and the second water outlet pipe 106 are arranged parallel to the main tank side plate 118. In this specific embodiment, the backpack bottom plate 110 should be raised as high as possible to reduce the water capacity of the backpack area. When the water area 101 is at low tide, the water volume in the backpack area is very small, while during high tide, the water level in the backpack area also rises. If the water capacity of the backpack area is large, it will increase the amount of water required by the water area 101 during high tide, thus requiring an increase in the water storage capacity of the bottom tank 2.

[0053] In the embodiment where the drainage area 104 is a water backpack, the first drainage pipe 105 and the second drainage pipe 106 can be two separate pipes, such as... Figure 1 As shown, the first drain pipe 105 and the second drain pipe 106 are arranged side by side. The first drain pipe 105 and the second drain pipe 106 can also be connected to each other. Specifically, the second drain pipe 106 is sleeved outside the first drain pipe 105.

[0054] In another specific embodiment of the present invention, please refer to the appendix. Figure 7 , attached Figure 7The diagram illustrates a specific embodiment of the present invention where the drainage area 104 is located within the water area 101 and is represented by an outer pipe 122. A first drainage pipe 105 and a second drainage pipe 106 are installed within the outer pipe 122, forming a triple overflow drainage system. The top of the outer pipe 122 is capped, and second fish-blocking holes are provided at the upper and lower parts of the outer pipe 122. Water from the water supply area 101 flows into the drainage area 104 through these second fish-blocking holes, while simultaneously preventing fish from entering the drainage area 104 from the water area 101. The second drainage pipe 106 is fitted over the first drainage pipe 105.

[0055] When the tide recedes in water zone 101, and the water level is below the inlet of the first drain pipe 105, water flows only through the second drain pipe 106. The flow process is as follows: water in water zone 101 enters the space between the outer pipe 122 and the second drain pipe 106 through the second fish-blocking hole. Then, the water overflows through the inlet of the second drain pipe 106 into the space between the second drain pipe 106 and the first drain pipe 105, and finally flows into the bottom tank 2. When the tide rises in water zone 101, the electric ball valve 108 is closed, and the second drain pipe 106 stops flowing water. At this time, the first drain pipe 105 also stops flowing water because its inlet is above the water level. Therefore, only the first water inlet pipe 107 is supplying water to water zone 101, and thus water zone 101 begins to rise. When the water level in water zone 101 is higher than the inlet of the first drain pipe 105, the first drain pipe 105 starts to discharge water. Then, the water supply from the first water supply pipe 107 and the water discharge from the first drain pipe 105 gradually reach equilibrium, and water zone 101 reaches its high tide level.

[0056] In an embodiment where the drainage area 104 is located within the water area 101 and the drainage area 104 is the outer pipe 122, only one inner pipe 124 can be installed inside the outer pipe 122 to form a double overflow pipe structure. The diameter of the double overflow pipe is smaller than that of the triple overflow pipe, which is beneficial to improving the aesthetics of the aquatic-terrestrial tidal tank. Fish-blocking combs are installed at the top and bottom of the outer pipe 122 of the double overflow pipe, and the inner pipe 124 is the drainage pipe. The drainage pipe is connected to the bottom tank 2 through the first drain pipe and the second drain pipe. Valves are installed on both the first drain pipe and the second drain pipe. When both valves are open, water from the drain pipe enters the bottom cylinder 2 simultaneously through the first and second drain pipes, resulting in a large drain flow rate and maintaining water zone 101 at a low tide level. When one of the valves in the first and second drain pipes is closed, water from the drain pipe can only enter the bottom cylinder 2 through the other of the first and second drain pipes. At this time, the drain flow rate decreases, and the water level in water zone 101 rises. The rise in the water level in water zone 101 leads to an increase in overflow pressure, causing the drain flow rate to gradually increase. At the same time, due to the increase in the pump head, the inflow rate gradually decreases. When the water level in water zone 101 rises to a certain level, the inflow and outflow rates reach equilibrium, and the water level in water zone 101 stops rising and remains at a high tide level.

[0057] The first drain pipe and the second drain pipe are connected to the bottom cylinder 2 through the main drain pipe. At least one of the first drain pipe, the second drain pipe and the main drain pipe is equipped with a valve to reduce the noise of water flow during low tide.

[0058] Please refer to the attached document. Figure 8 - Appendix Figure 10 , attached Figure 8 A schematic diagram showing the structure of the tidal tank in an empty state when the land layer 117 is a sandy beach. (Attached) Figure 9 A schematic diagram showing the structure of the tidal chamber at low tide when the land layer 117 is a sandy beach. (Attached) Figure 10 This is a schematic diagram of the tidal tank at high tide when the land layer 117 is a sandy beach. If the land layer 117 of the land area 102 is only sandy beach and does not include mudflats, then there is no need to consider the problem of water containing mudflats flowing into the water area 101 through the partition plate 103 and polluting the water area 101. Therefore, the partition plate 103 can be a flat plate. During high tide, the water level in the water area 101 will exceed the partition plate 103, directly submerging the land area 102, and the water level can rise quite high. The inlet of the first drain pipe 105 should also be raised accordingly to match the higher tide level. When the water level in the water area 101 rises high enough, aquatic fish and other organisms in the water area 101 will also swim to the land area 102 with the tide, thus increasing the ornamental value of the tidal tank.

[0059] The sand used in the land area 102 should be slightly coarser, especially the surface layer. Fine sand should not be used, as it will float on the water due to surface tension during high tide. If the land layer 117 of the land area 102 is only sand, then fiddler crabs cannot be raised, but sand crabs and other beach creatures can be raised, and mangroves can also be planted.

[0060] Please refer to the attached document. Figure 9 At low tide, the water level in water zone 101 is lower than the height of partition plate 103, and water in water zone 101 no longer flows into land area 102. At the same time, the water supply from the first water inlet pipe 107 and the water discharge from the second water outlet pipe 106 reach a balance.

[0061] Please refer to the attached document. Figure 10 At high tide, the water in water zone 101 merges with the water in land zone 102. The water flow from the first water inlet pipe 107 is balanced with the water flow from the first water outlet pipe 105.

[0062] The terrestrial layer 117 can be formed solely of sand, or it can be formed jointly of sand and tidal flat mud. In one specific embodiment, please refer to the appendix. Figure 2The lower layer of the land layer 117 consists of cleaned sand, while the upper layer is a mixture of sand and tidal flat mud. A small area in the upper layer can be covered with pure tidal flat mud to meet the needs of certain intertidal organisms. However, due to the poor permeability of tidal flat mud, the area of ​​pure tidal flat mud should not be too large to avoid difficulties in infiltration. Furthermore, tidal flat mud has a certain viscosity and is only washed up when the water flow is fast; the water infiltrating downwards in the land area 102 flows slowly and will not wash away the tidal flat mud.

[0063] The surface of the sand or tidal flat in land area 102 contains organic matter (algae, nematodes, organic detritus, etc.) that intertidal organisms can feed on. The algae and nematodes grow and proliferate under conditions of suitable light, sand or tidal mud, and suitable salinity and humidity. The organic detritus mainly comes from plankton and their remains, food debris, and aquatic organism excrement particles in water area 101, which are carried by the water flow to land area 102 during high tide and then remain on the surface of the land layer 117. The light can come from natural sunlight or artificial light sources suitable for the growth of ordinary plants.

[0064] If the land layer 117 is composed of sand and tidal mud, it is necessary to prevent water in water zone 101 from communicating with land zone 102 through the space above the partition plate 103. If the water in land zone 102 and water in water zone 101 become connected, the tidal mud in land zone 102 will flow into water zone 101 with the tide, thereby polluting water zone 101. Therefore, in a specific embodiment of the present invention, the height of the partition plate 103 is limited to be higher than the high tide level of water zone 101, while the overflow height of the partition plate 103 is lower than the height of the partition plate 103.

[0065] Please refer to the appendix for details. Figure 11 , attached Figure 11 This is a schematic diagram of the tidal tank when it is empty. (See attached diagram.) Figure 11A connecting pipe 120 is installed on the partition plate 103, and the connecting pipe 120 passes through the partition plate 103. Water in the water zone 101 can overflow into the land zone 102 through the connecting pipe 120. The height of the connecting pipe 120 is the overflow height of the water zone 101 into the land zone 102. Therefore, the connecting pipe 120 is below the high tide level of the water zone 101 and above the low tide level of the water zone 101. The flow cross-section of the connecting pipe 120 is adjustable so that the inflow of water into the land zone 102 is greater than the outflow of water into the land zone 102, thereby raising the water level of the land zone 102 to submerge the land layer 117. The flow cross-section of the connecting pipe 120 determines the high tide level of the land zone 102. The high tide level of the land zone 102 is lower than the connecting pipe 120. Specifically, a regulating valve can be installed in the connecting pipe 120 to adjust the opening of the connecting pipe 120. If the regulating valve pipe is long, the regulating valve pipe can be directly used as the connecting pipe 120 to pass through the partition plate 103. A fish-blocking net needs to be installed at the opening of the connecting pipe 120 facing the water area 101 to prevent fish and other organisms from entering the water area 101.

[0066] For specific embodiments of the present invention, please refer to the appendix. Figure 6 A tidal pool 116 is constructed on the upper surface of the terrestrial layer 117 of the land area 102, located below the outlet of the connecting pipe 120. The tidal pool 116 can be a small dish. Its main function is to moderate the water flow and prevent water from the connecting pipe 120 from directly impacting the mudflats and sediment. Water flowing from the outlet of the connecting pipe 120 first enters the tidal pool 116 and then overflows onto the surface of the terrestrial layer 117. Additionally, organisms from the land area 102 can enter the tidal pool 116 to soak. The inner wall of the tidal pool 116 should be relatively rough. This roughness can be achieved by installing anti-slip mesh plates or by creating grooves and / or protrusions on the inner wall to facilitate the organisms' exit from the tidal pool and return to the land area 102. After the mudflat silt is laid, the tidal pool 116 is placed directly below the outlet of the connecting pipe 120. To improve the stability of the tidal pool 116, its bottom can be submerged within the land layer 117. This simultaneously reduces the distance between the opening of the tidal pool 116 and the upper surface of the land layer 117, thereby further mitigating the impact of water flow on the land layer 117 and facilitating the entry of various organisms from the land area 102 into the tidal pool 116.

[0067] Some organisms in the tidal aquarium, such as mudskippers, frequently move back and forth between the land area 102 and the water area 101. If mudskippers enter the water area 101 directly from the land area 102, the mud and sand they carry will be carried into the water area 101, thus polluting it. Therefore, this invention specifically incorporates a water tank 121, as detailed in the attached diagram. Figure 1The partition 103 includes a partition body 1031 and a water trough 121 disposed on the side of the partition body 1031 facing away from the water area 101. The side of the water trough 121 closest to the water area 101 is connected to the water area 101, so water in the water area 101 can enter the water trough 121. Like the partition 103, the water trough 121 is connected to the front and rear side plates of the main tank 1. The side of the water trough 121 away from the water area 101 has a first side plate 1032. The top surface of the first side plate 1032 is higher than the high tide level of the water area 101. A connecting pipe 120 is disposed on the first side plate 1032. When organisms from the land area 102 enter the water area 101, they will first pass through the water trough 121. When passing through the water trough 121, the water in the water trough 121 will cause the mud and sand on the organisms to fall off, so that the organisms will not pollute the water area 101 after entering the water area 101. The sediment that falls from the organisms will settle at the bottom of tank 121.

[0068] On the side of the water tank 121 closest to the water area 101, a second side plate of the water tank 121 is formed on the upper part of the partition plate body 1031. The top surface of the second side plate is lower than the low tide level of the water area 101. In this way, the water in the water tank 121 and the water area 101 are connected regardless of whether the water area 101 is at high tide or low tide, which facilitates the flow of water between the water tank 121 and the water area 101 and makes it easier to remove silt from the water tank 121.

[0069] Please refer to the attached document. Figure 12 , attached Figure 12 This is a schematic diagram of the tidal tank structure with the partition plate 103 arranged at an angle. The partition plate 103 gradually slopes upwards towards the land area 102, thus resembling the effect of a natural coastline. Additionally, an anti-slip mesh plate 119 is provided on the side of the partition plate 103 closest to the water area 101. Creatures in the water area 101, such as crabs, crawl along the anti-slip mesh plate 119 into the land area 102.

[0070] Please refer to the attached document. Figures 1-11 In this embodiment, the partition 103 is arranged vertically, and the partition 103 is not tilted towards the landing area 102. Figure 1 As shown, the bottom wall of the main cylinder 1 is arranged in a horizontal direction, and the partition plate 103 is perpendicular to the bottom wall of the main cylinder 1.

[0071] Please refer to the attached document. Figure 1To prevent sand from land area 102 from entering the bottom tank 2 through the third drain pipe 112, a filter layer is provided at the bottom of land area 102 in one specific embodiment of the present invention. Land layer 117 is positioned above the filter layer. The filter layer blocks sand while allowing water flow. To improve drainage, a bottom filter rack 114 is provided below the filter layer in this embodiment. The bottom filter rack 114 is a mesh rack with supporting legs, its function being to support the filter layer, forming a water flow space below it, facilitating water seepage from land layer 117 into the water flow space. Water seeping from land layer 117 flows into the water flow space after being filtered by the filter layer, and then flows into the bottom tank 2 through the third drain pipe 112.

[0072] Please refer to the attached document. Figure 1 The filter layer is specifically nano-brick 113. Nano-brick is an aquarium filter material originally used for biological filtration in fish tanks. In this embodiment, nano-brick 113 is arranged below the mud and sand layer in the land area 102. Its function is to intercept and filter particulate matter such as sand in the water, while allowing water and mud from the tidal flats to pass through.

[0073] Nano brick 113 can be a single, complete nano brick, or it can be a combination device made up of multiple small nano bricks. When assembling, care should be taken to seal the gaps on the upper surface with landscaping mud, cement, or other materials, or to seal them with sealing rings or sealing strips to prevent sand from falling in.

[0074] A sealing ring is installed in the gap between the nano-brick 113 and the cylinder wall of the land area 102 to prevent sand from falling into the water flow space.

[0075] In another specific embodiment of the present invention, please refer to the appendix. Figure 13 The filter layer is filter mesh 123. Filter mesh 12 is a rigid filter mesh resistant to seawater corrosion, such as titanium mesh. The pore size of filter mesh 123 is preferably large enough to trap sand while allowing water and mud to pass through.

[0076] Please refer to the attached document. Figure 9 In the land area 102, only clean sand is laid, designated as a beach. Since sand does not retain water as well as tidal flat silt, the beach in land area 102 tends to be relatively dry after low tide. To ensure the beach's moisture level, this specific embodiment of the invention incorporates the following design: Nanobrick protrusions 122 are provided below nanobricks 113, extending into the water flow space to about half the height of the space. When the tide recedes in land area 102, water in the water flow space can seep upwards into the beach through the nanobrick protrusions 122 and nanobricks 113, thus maintaining the beach's moisture level.

[0077] The above scheme can also be used when the land area is a tidal basin of mudflats and silt.

[0078] A regulating valve is installed on the third drain pipe 112 to adjust the water level in the flow space. When the valve opening is increased, the water level in the flow space drops, and the nano-brick protrusions cannot contact the water surface, thus stopping water absorption. When the valve opening is decreased, the water level in the flow space rises, and the nano-brick protrusions can contact the water surface, allowing water to be absorbed upwards. Therefore, by adjusting the regulating valve, the absorption of water through seepage and the absorption of water without seepage can be controlled. This regulating valve also helps to reduce the drainage noise of the third drain pipe 112.

[0079] Please refer to the attached document. Figure 1 The water supply system includes a first water supply pipe 107 and a second water supply pipe 111. The inlet of the second water supply pipe 111 is connected to the outlet of the water pump 204. The outlet of the second water supply pipe 111 is located within the water flow space, and a branch pipe for changing the water flow direction is provided at the outlet of the second water supply pipe 111. This branch pipe is located within the water flow space to prevent water flow from impacting the filter layer. The branch pipe at the outlet of the second water supply pipe 111 can be horizontal or downward relative to the horizontal direction. Figure 1 As shown, the outlet of the second water supply pipe 111 is connected to the middle of the branch pipe, and both ends of the branch pipe in the length direction can drain water.

[0080] A regulating valve is installed on the second water inlet pipe 111 and the first water inlet pipe 107 respectively. Water from the water pump 204 can enter the water flow space through the second water inlet pipe 111 to flush the bottom of the filter layer, thereby preventing the filter layer from becoming clogged.

[0081] The water output from pump 204 is simultaneously sent to the first water inlet pipe 107 and the second water inlet pipe 111. The regulating valves on the first water inlet pipe 107 and the second water inlet pipe 111 are used to regulate the flow rate in the first water inlet pipe 107 and the second water inlet pipe 111.

[0082] To prevent water in water zone 101 from flowing back into bottom cylinder 2 during a power outage, an anti-siphon hole can be installed on the first water inlet pipe 107, or a check valve can be installed in the first water inlet pipe 107.

[0083] The tidal tank also includes a spray device 3, which includes at least one nozzle 302 and a spray pipe 301 connected to the nozzle 302. The inlet of the spray pipe 301 is connected to a fresh water source and is used to clean the inner wall of the main tank 1.

[0084] In an embodiment where the spray device 3 has a nozzle 302, the nozzle is positioned above the middle of the main cylinder, enabling simultaneous spraying of both the land area and the water area.

[0085] In an embodiment where the spray device 3 has at least two nozzles 302, some nozzles are located above the land area and some nozzles are located above the water area.

[0086] Freshwater can come from a storage container, pumped by a pump; or from a tap water pipe equipped with a water purification system, controlled by a solenoid valve. Nozzle 302 is a wide-angle type to spray water horizontally in all directions as much as possible during spraying. When the water level in water zone 101 of the main tank 1 drops to low tide, the spray device 3 is activated to wash the seawater adhering to the tank wall into the water, preventing salt stains from remaining after the seawater evaporates. The spraying should be done after the water level in water zone 101 drops to low tide and before the seawater adhering to the tank wall evaporates; this timing is controlled by a timer switch. The main function of the spray device 3 is to keep the inner wall of the main tank 1 clean, which is beneficial for its aesthetics. Please refer to the attached document. Figure 14 and attached Figure 15 , attached Figure 14 This is a water level diagram of bottom tank 2 during low tide in water area 101. (Attached) Figure 15 This is a water level diagram of the sump tank 2 in water area 101 during high tide. The sump tank 2 of the tidal aquarium in this invention is structurally similar to the sump tank 2 of a conventional bottom-filtered aquarium, with its interior divided into several functional compartments 205. A partition plate assembly is provided between each pair of adjacent functional compartments 205. The partition plate assembly includes a baffle plate 202 and an overflow plate 203 arranged opposite each other. The baffle plate 202 guides the water flow, allowing it to pass through each functional compartment 205. The overflow plate 203 causes water in one functional compartment 205 to overflow into the next functional compartment 205. If the water level in the sump tank 2 exceeds the height of the baffle plate 202, the water will pass directly over the baffle plate 202, thus affecting the filtration effect of the sump tank 2. Therefore, the height of the baffle plate 202 determines the maximum water level of the sump tank 2. The overflow plate 203 limits the minimum water level of the functional compartment 205 in front of it. Since the second functional compartment 205 of the sump 2, following the water flow direction, is usually the protein skimmer compartment (where the protein skimmer is placed), the protein skimmer compartment needs to maintain a stable water level. When the main tank 1's water zone 101 is at high tide, the water volume in the sump 2 decreases; when the main tank 1's water zone 101 is at low tide, the water volume in the sump 2 increases. To ensure that the water level in the protein skimmer compartment remains stable despite these changes in water volume, the overflow plates 203 between the first two compartments—that is, the overflow plates 203 upstream and downstream of the protein skimmer compartment—need to be appropriately raised, but still lower than the baffle plate 202. Subsequent overflow plates 203 should be appropriately lowered. In this way, the water volume changes in the sump 2 are concentrated in the functional compartment 205 after the protein skimmer compartment. The heights of the two overflow plates 203 located upstream and downstream of the protein skimmer compartment can be equal, or the height of the overflow plate 203 located upstream of the protein skimmer compartment can be 0cm-3cm higher than the height of the overflow plate 203 located downstream of the protein skimmer compartment.

[0087] Please refer to the attached document. Figure 16 and attached Figure 17 , attached Figure 16 This is a water level diagram of bottom tank 2 during low tide in water area 101. (Attached) Figure 17This is a water level diagram of sump 2 during high tide in water zone 101. If the land area 102 of the main tank 1 is set as a sandy beach, and the tidal range of water zone 101 is large, the water volume in sump 2 will change significantly. In this case, the height of the baffle 202 of sump 2 is basically the same as that of the baffle of a conventional bottom-filter aquarium, while the height of the overflow plate 203 is appropriately reduced, and it decreases further down along the water flow direction, forming a stepped shape. In this way, even if the water volume in sump 2 changes significantly, its baffle 202 and overflow plate 203 can still guide the water flow direction normally. At this time, the water volume in all functional compartments 205 of sump 2 can change, and the change is greater towards the back.

[0088] In the description of this invention, it should be noted that the terms "upper", "lower", "bottom", "horizontal", "center", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0089] Unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0090] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A tidal tank, comprising a main tank and a sump tank, characterized in that, Also includes: A partition plate is disposed inside the main cylinder, dividing the main cylinder into a water zone and at least one land zone. Water in the water zone can overflow into the land zone through the partition plate. The overflow height of the partition plate is lower than the high tide level of the water zone and higher than the low tide level of the water zone. An overflow device and a drainage area, wherein water in the drainage area that is above the low tide level overflows into the drainage area through the overflow device; A first drain pipe, a second drain pipe, and a third drain pipe are provided. The first and second drain pipes are located in the drainage area. The inlet of the first drain pipe is higher than the inlet of the second drain pipe. The inlet of the second drain pipe is not higher than the overflow height of the overflow device. The inlet of the third drain pipe is connected to the land area. The outlets of the first, second, and third drain pipes are all connected to the bottom cylinder. An electric ball valve is provided on the second drain pipe. The first water supply pipe and water pump are provided, wherein the water pump is installed in the bottom cylinder, the outlet of the water pump is connected to the inlet of the first water supply pipe, and the outlet of the first water supply pipe is connected to the water area. The top surface of the partition plate is higher than the high tide level of the water area. A connecting pipe is provided on the upper part of the partition plate. The height of the connecting pipe is higher than the low tide level and lower than the high tide level. Water in the water area overflows into the land area through the connecting pipe. The flow cross section of the connecting pipe is adjustable. The partition plate includes a partition plate body and a water tank disposed on the side of the partition plate body facing away from the water area. The side of the water tank close to the water area is connected to the water area. The side of the water tank away from the water area has a first tank side plate. The top surface of the first tank side plate is higher than the high tide level of the water area. The connecting pipe is disposed on the first tank side plate. On the side of the water tank near the water area, a second side plate of the water tank is formed on the upper part of the main body of the partition plate, and the top surface of the second side plate is lower than the low tide level of the water area.

2. The tidal tank according to claim 1, characterized in that, The drainage area is a backpack set on the main cylinder side plate of the main cylinder. The backpack includes a backpack side plate and a backpack bottom plate. The backpack side plate includes a first side plate opposite to the main cylinder side plate, a front side plate and a rear side plate located between the first side plate and the main cylinder side plate. The part of the main cylinder side plate corresponding to the backpack side plate, the backpack side plate and the backpack bottom plate together form the drainage area. The inlets of the first drainage pipe and the second drainage pipe are located in the backpack. The overflow device includes: The first fish-blocking comb is disposed on the inner side of the main tank side plate. The first fish-blocking comb and the main tank side plate form a first overflow channel. The lower and upper parts of the first fish-blocking comb are respectively provided with first fish-blocking holes. The first fish-blocking holes are connected to the water area and the first overflow channel. A notch is made in the side plate of the main cylinder, and the notch is connected to the upper part of the backpack.

3. The tidal tank according to claim 1, characterized in that, The drainage area is an outer pipe set within the water area. The upper and lower parts of the outer pipe are respectively provided with second fish-blocking holes that communicate with the water area. The first drainage pipe and the second drainage pipe are located inside the outer pipe, and the second drainage pipe is sleeved outside the first drainage pipe.

4. The tidal tank according to claim 1, characterized in that, Water in the water zone overflows into the land area through the top surface of the partition plate.

5. The tidal tank according to claim 1, characterized in that, A tidal pool is provided on the upper surface of the terrestrial layer in the land area, and the tidal pool is located below the outlet of the connecting pipe; The walls of the tidal pool are equipped with anti-slip mesh panels.

6. The tidal tank according to claim 1, characterized in that, The partition plate gradually slopes upwards towards the land area, and an anti-slip mesh plate is provided on the side of the partition plate closest to the water area; or, The partition plate is arranged vertically, and an anti-slip mesh plate is provided on the side of the partition plate closest to the water area.

7. The tidal tank according to claim 1, characterized in that, A filter layer is provided at the bottom of the land area, which blocks sand and allows water to flow; a bottom filter frame is provided below the filter layer, which creates a water flow space between the filter layer and the bottom plate of the land area; and a land layer is provided above the filter layer.

8. The tidal tank according to claim 7, characterized in that, The filter layer is formed from nanobricks or from a filter screen.

9. The tidal tank according to claim 8, characterized in that, The nanobrick has a protrusion below it, which protrudes into the water flow space. Water in the water flow space can seep upward into the terrestrial layer through the nanobrick protrusion and the nanobrick.

10. The tidal tank according to claim 7, characterized in that, It also includes a second water supply pipe, the inlet of which is connected to the outlet of the water pump. The outlet of the second water supply pipe is provided with a branch pipe for changing the direction of water flow. The branch pipe is located within the water flow space to prevent water flow from impacting the filter layer.

11. The tidal tank according to claim 1, characterized in that, It also includes a spraying device, which includes at least one nozzle and a spray pipe connected to the nozzle. The inlet of the spray pipe is connected to a fresh water source, and the outlet of the spray pipe is connected to the nozzle, for cleaning the inner wall of the main cylinder.

12. The tidal tank according to claim 1, characterized in that, The bottom cylinder is provided with multiple sets of dividing plates, and the internal area of ​​the bottom cylinder is divided into multiple functional compartments by the multiple sets of dividing plates. Water entering the bottom cylinder flows through each of the functional compartments in sequence. The partition plate assembly includes a baffle plate and an overflow plate arranged opposite to each other. A first water flow channel is formed between the bottom of the baffle plate and the bottom plate of the bottom cylinder, and a second water flow channel is formed between the baffle plate and the overflow plate. Water in the upstream functional compartment flows into the downstream functional compartment in sequence through the first water flow channel, the second water flow channel and the space above the overflow plate. Along the direction of water flow, the height of the overflow plate in each of the partition plate groups decreases sequentially.

13. The tidal tank according to claim 12, characterized in that, The multiple functional compartments include egg compartments. The overflow plates of two compartment plate groups that make up the egg compartment are higher than the overflow plates of other compartment plate groups. The overflow plate located upstream of the egg compartment is 0-3 cm higher than the overflow plate located downstream of the egg compartment.

14. The tidal tank according to claim 1, characterized in that, A regulating valve is installed on the third drain pipe to reduce the noise of the drain pipe.

15. The tidal tank according to claim 1, characterized in that, The main cylinder has one water zone and one land zone; or, The main cylinder has one water zone and two land zones, the water zone being located between the two land zones and connected to the two land zones via the overflow device.

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