Amphibious tide tank

Abstract

The utility model discloses a land and water tide tank which comprises a main tank, a bottom tank and a partition plate, the partition plate divides the main tank into a land area and a water area, the land and water tide tank further comprises an overflow device and a water drainage area, and water in the water area overflows to the water drainage area through the overflow device; the first sewer pipe and the second sewer pipe are arranged in the sewer area, a water inlet of the first sewer pipe is higher than a water inlet of the second sewer pipe, the water inlet of the second sewer pipe is not higher than the overflow height of the overflow device, and an electric ball valve is arranged on the second sewer pipe; the water pump is arranged in the bottom cylinder. The water area of the land and water tide tank has a high water level when located at a low tide level, and meanwhile, the land area is provided with a deep land layer with good air permeability, so that the requirements of intertidal zone organisms on the land layer and the requirements of aquatic organisms on water quantity can be met. In addition, the deep land layer can be used for digging deep holes for cave organisms in the intertidal zone, survival of the cave organisms is facilitated, and the ornamental value of the land and water tidal tank is improved.

Description

Technical Field

[0001] The utility model relates to the field of fish tanks, in particular to an amphibious tidal tank. Background Art

[0002] In the prior art, the land layer and water in the tidal cylinder are located in the same area. When the water in the tidal cylinder rises at high tide, the water level rises, the land layer is submerged, and the air inside is expelled; when the water in the tidal cylinder recedes at low tide, the land layer emerges from the water, the accumulated water inside is expelled, and air re-enters the land layer. In order to maintain good air permeability of the land layer and facilitate the growth of intertidal organisms, the land layer should be exposed to the water surface as much as possible during low tide. However, in this case, the water level in the cylinder needs to drop to a very low position, which is not conducive to the growth of aquatic organisms. Therefore, how to ensure that the land layer can fully emerge from the water surface when the tidal cylinder is at low tide, while ensuring that the water level in the tidal cylinder is still relatively high, so as to take into account the growth of intertidal organisms and aquatic organisms, is a key problem that needs to be solved by those skilled in the art. Utility Model Content

[0003] In view of this, the purpose of the present invention is to ensure that the land layer can be fully exposed to the water surface when the amphibious tidal tank is at low tide, and at the same time to ensure that the amphibious 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 solutions:

[0005] An amphibious tidal tank, comprising a main tank and a sump, and further comprising:

[0006] a partition plate disposed in the master cylinder, the partition plate dividing the master cylinder into a water area and at least one land area, water in the water area can overflow into the land area through the partition plate, and the overflow height of the partition plate is lower than the high tide level of the water area and higher than the low tide level of the water area;

[0007] an overflow device and a launching area, wherein water in the water area that is higher than the low tide level overflows into the launching area through the overflow device;

[0008] a first downpipe, a second downpipe, and a third downpipe, wherein the first downpipe and the second downpipe are arranged in the downpipe area, the water inlet of the first downpipe is higher than the water inlet of the second downpipe, the water inlet of the second downpipe is not higher than the overflow height of the overflow device, the water inlet of the third downpipe is connected to the land area, the water outlets of the first downpipe, the second downpipe, and the third downpipe are all connected to the sump, and the second downpipe is provided with an electric ball valve;

[0009] A first water supply pipe and a water pump, wherein the water pump is arranged in the bottom tank, the water outlet of the water pump is connected with the water inlet of the first water supply pipe, and the water outlet of the first water supply pipe is connected with the water area.

[0010] Preferably, in the above-mentioned amphibious tidal cylinder, the water discharge area is a backpack provided on the main cylinder side panel of the main cylinder, the backpack including a backpack side panel and a backpack bottom panel, the backpack side panel including a first side panel opposite to the main cylinder side panel, a front side panel and a rear side panel located between the first side panel and the main cylinder side panel, the portion of the main cylinder side panel corresponding to the backpack side panel, the backpack side panel and the backpack bottom panel together form the water discharge area, and the water inlets of the first and second water discharge pipes are located on the backpack;

[0011] The overflow device comprises:

[0012] a first fish intercepting comb, disposed on an inner side of the main cylinder side plate, the first fish intercepting comb and the main cylinder side plate forming a first overflow channel, the first fish intercepting comb having first fish intercepting holes respectively disposed at the lower portion and the upper portion thereof, the first fish intercepting holes connecting the water area and the first overflow channel;

[0013] A notch is provided on the side plate of the main cylinder, and the notch is correspondingly connected to the upper end position of the backpack.

[0014] Preferably, in the above-mentioned terrestrial and tidal tank, the water area is an outer tube arranged in the water area, and the upper and lower parts of the outer tube are respectively provided with second fish-blocking holes connected to the water area, the first water pipe and the second water pipe are located in the outer tube, and the second water pipe is arranged outside the first water pipe.

[0015] Preferably, in the above-mentioned land and water tidal tank, the water in the water area overflows into the land area through the top surface of the dividing plate.

[0016] Preferably, in the above-mentioned land and water tidal cylinder, 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. The 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.

[0017] Preferably, in the above-mentioned tidal cylinder, a tidal pool is provided on the upper surface of the land layer of the land area, and the tidal pool is located below the water outlet of the connecting pipe;

[0018] The pool wall of the tidal pool is provided with an anti-slip grid plate.

[0019] Preferably, in the above-mentioned terrestrial and tidal cylinder, the partition plate includes a partition plate body, and also includes a water trough arranged 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, and 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, and the connecting pipe is arranged on the first trough side plate.

[0020] Preferably, in the above-mentioned tidal tank, on the side of the water tank close to the water area, the upper part of the partition plate body forms the second trough side plate of the water tank, and the top surface of the second trough side plate is lower than the low tide level of the water area.

[0021] Preferably, in the above-mentioned land and water tidal tank, the partition plate is gradually inclined from bottom to top toward the land area, and a non-slip grid plate is provided on the side of the partition plate close to the water area; or,

[0022] The partition plate is arranged in a vertical direction, and a non-slip grid plate is arranged on one side of the partition plate close to the water area.

[0023] Preferably, in the above-mentioned terrestrial and 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 forms a water flow space between the filter layer and the bottom plate of the land area, and the land layer is provided above the filter layer.

[0024] Preferably, in the above-mentioned terrestrial and tidal tank, the filter layer is formed by nano bricks or a filter mesh.

[0025] Preferably, in the above-mentioned tidal cylinder, nanobrick protrusions are provided below the nanobricks, and the nanobrick protrusions protrude toward the water flow space, so that water in the water flow space can penetrate upwards into the land layer through the nanobrick protrusions and the nanobricks.

[0026] Preferably, the above-mentioned terrestrial and tidal cylinder further includes a second water supply pipe, the water inlet of the second water supply pipe is connected to the water outlet of the water pump, and the water outlet of the second water supply pipe is provided with a branch pipe for changing the water outlet direction, and the branch pipe is located in the water flow space to prevent water flow from impacting the filter layer.

[0027] Preferably, the above-mentioned amphibious tidal tank further includes a spraying device, which includes at least one nozzle and a spraying pipe connected to the nozzle, the water inlet of the spraying pipe is connected to the fresh water source, and the water outlet of the spraying pipe is connected to the nozzle, for cleaning the inner wall of the main tank.

[0028] Preferably, in the above-mentioned tidal tank, a plurality of grid plate groups are provided in the sump, and the internal area of ​​the sump is divided into a plurality of functional grids by the plurality of grid plate groups, and the water entering the sump flows through each of the functional grids in sequence;

[0029] The partition plate group 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 sump, and a second water flow channel is formed between the baffle plate and the overflow plate. Water in the upstream functional cell flows into the downstream functional cell through the first water flow channel, the second water flow channel, and the space above the overflow plate in sequence.

[0030] Along the water flow direction, the height of the overflow plate in each of the grid plate groups decreases successively.

[0031] Preferably, in the above-mentioned terrestrial and tidal tank, the multiple functional grids include an egg skimmer, and the overflow plates of the two grid plate groups constituting the egg skimmer are higher than the overflow plates in the other grid plate groups, and the overflow plate located upstream of the egg skimmer is 0-3 cm higher than the overflow plate located downstream of the egg skimmer.

[0032] Preferably, in the above-mentioned tidal cylinder, a regulating valve is provided on the third downcomer pipe to reduce the noise of the downcomer pipe.

[0033] Preferably, in the above-mentioned tidal tank, the main tank has one water area and one land area; or,

[0034] The master cylinder has one water area and two land areas. The water area is located between the two land areas. The water area is connected to the two land areas through the overflow device.

[0035] The above technical solution demonstrates that the low-tide level of the water zone is determined by the overflow height of the overflow device. As long as the overflow height of the overflow device is high, the low-tide level of the water zone will also be high. Therefore, the water zone can still maintain a high water level at low tide to meet the water needs of aquatic organisms. On the other hand, accumulated water within the land area can be drained into the sump via the third downpipe, allowing the entire land layer within the land area to be exposed, forming a relatively deep and breathable land layer to meet the needs of intertidal organisms for the land layer. While the ebb and flow of the tide in the water zone only varies by a few centimeters, the thickness of the breathable land layer in the land area can reach tens of centimeters, meeting the needs of most intertidal burrowing organisms.

[0036] The present invention maintains a high water level in the water area of ​​the tidal tank at low tide, while also providing a deep land layer in the land area. This ensures that both the land layer requirements of intertidal organisms and the water volume requirements of aquatic organisms are met, thus facilitating the growth of intertidal organisms. Furthermore, the deep land layer allows intertidal burrowing organisms to dig deeper burrows, which is beneficial for their survival and enhances the viewing experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0038] Figure 1 A schematic diagram of the structure of a water and land tidal tank when empty provided by a specific embodiment of the utility model;

[0039] Figure 2 A schematic structural diagram of a water and land tidal cylinder at the initial stage of high tide provided by a specific embodiment of the utility model;

[0040] Figure 3 A schematic structural diagram of a tidal cylinder in the final stage of high tide provided by a specific embodiment of the present invention;

[0041] Figure 4 A schematic structural diagram of a water and land tidal cylinder at the initial stage of low tide provided by a specific embodiment of the utility model;

[0042] Figure 5 A schematic structural diagram of a tidal cylinder in the final stage of low tide provided by a specific embodiment of the present invention;

[0043] Figure 6 A schematic diagram of the structure of a tidal tank provided by a specific embodiment of the present invention when the water area is at low tide;

[0044] Figure 7 A schematic structural diagram of a tidal tank with triple overflow drain pipes provided in a specific embodiment of the present invention;

[0045] Figure 8 A schematic structural diagram of a tidal cylinder in an empty state when the land layer provided by a specific embodiment of the present invention is a beach;

[0046] Figure 9 A schematic diagram of the structure of the tidal cylinder at low tide when the land layer provided by the specific embodiment of the utility model is a beach;

[0047] Figure 10A schematic structural diagram of a tidal tank at high tide level when the land layer provided by a specific embodiment of the present invention is a beach;

[0048] Figure 11 A schematic diagram of the structure of the tidal cylinder provided by the specific embodiment of the present invention when it is in an empty state;

[0049] Figure 12 A schematic structural diagram of a water-land tidal cylinder with inclined partition plates provided in a specific embodiment of the present invention;

[0050] Figure 13 A schematic diagram of the structure of a water and land tidal tank including a filter provided in a specific embodiment of the utility model;

[0051] Figure 14 A water level diagram of a bottom tank when the water area is low tide provided in a specific embodiment of the utility model;

[0052] Figure 15 A water level diagram of a bottom tank during high tide in a water area provided by a specific embodiment of the utility model;

[0053] Figure 16 A water level diagram of a bottom tank when the water area is low tide provided in a specific embodiment of the utility model;

[0054] Figure 17 A water level diagram of a bottom tank during high tide in a water area provided by a specific embodiment of the utility model;

[0055] Figure 18 A schematic diagram of the structure of the double land and water tidal cylinder provided by a specific embodiment of the utility model when it is in an empty cylinder state;

[0056] Figure 19 A schematic structural diagram of a tidal tank with double overflow drain pipes provided in a specific embodiment of the present invention;

[0057] Figure 20 A top view of a tidal tank provided in a specific embodiment of the utility model.

[0058] The names of the components are as follows:

[0059] 1- Main cylinder, 101- Water area, 102- Land area, 103- Divider plate, 1031- Divider plate body, 1032- First tank side plate, 104- Drain area, 105- First drain pipe, 106- Second drain pipe, 107- First water pipe, 108- Electric ball valve, 109- Backpack side plate, 110- Backpack bottom plate, 111- Second water pipe, 112- Third drain pipe, 113- Nano brick, 114- Bottom filter Frame, 115-fish-blocking comb, 116-tidal pool, 117-land layer, 118-main cylinder side panel, 1181-notch, 119-anti-slip grid plate, 120-connecting pipe, 121-water tank, 122-external pipe, 123-filter, 2-bottom cylinder, 201-filter device, 202-baffle, 203-overflow plate, 204-water pump, 205-function grid, 3-spraying device, 301-spraying pipe, 302-nozzle. DETAILED DESCRIPTION

[0060] In view of this, the core of the present invention is to design an amphibious tidal tank, which can ensure that the land layer is thick and breathable when the amphibious tidal tank is at low tide, while also ensuring that the water level in the amphibious tidal tank is high, thereby facilitating the growth of intertidal organisms and aquatic organisms.

[0061] In order to enable those skilled in the art to better understand the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific implementation methods.

[0062] This utility model discloses a water and land tidal tank, please refer to the attached Figure 1 , attached Figure 1 This is a schematic diagram of the structure of an empty amphibious tidal aquarium provided by a specific embodiment of the present invention. The amphibious tidal aquarium comprises a main tank 1 and a sump 2, and specifically includes a partition plate 103, an overflow device, a drain area 104, a first drain pipe 105, a second drain pipe 106, a third drain pipe 112, a first inlet pipe 107, and a water pump 204.

[0063] The partition plate 103 can be a glass plate, which is connected to the front and rear side plates and the bottom plate of the master cylinder 1 without leaving any gaps at the connection, thereby dividing the master cylinder 1 into a land area 102 and a water area 101. The number of partition plates 103 in the master cylinder 1 is at least one, such as Figures 1-13 As shown, the master cylinder 1 has a partition plate 103 in the embodiment, which divides the master cylinder 1 into a land area 102 and a water area 101; Figure 18As shown, the master cylinder 1 has two partition plates 103 in its embodiment, dividing the master cylinder 1 into two land areas 102 and a water area 101, with the two land areas 102 located on either side of the water area 101. In the embodiment of the master cylinder 1 having two partition plates 103, the two land areas 102 and the water area 101 can be arranged in a straight line, an L-shape, a T-shape, etc.

[0064] The water in the water area 101 can overflow into the land area 102 through the partition plate 103 . The overflow height of the partition plate 103 is lower than the high tide level of the water area 101 and higher than the low tide level of the water area 101 .

[0065] The overflow device is used to allow water in the water area 101 to overflow into the sewer area 104. Optionally, the height of the overflow device is flush with the low tide level. A first downcomer 105 and a second downcomer 106 are both disposed in the sewer area 104. The water inlet of the first downcomer 105 is higher than the water inlet of the second downcomer 106, and the water inlet of the second downcomer 106 is no higher than the overflow height of the overflow device. When the water level in the water area 101 reaches the low tide level, water entering the sewer area 104 is discharged through the second downcomer 106. The water inlet height of the first downcomer 105 is flush with the high tide level. When the water level in the water area 101 reaches the high tide level, water entering the sewer area 104 is discharged through both the second downcomer 106 and the first downcomer 105.

[0066] The water inlet of the third downpipe 112 is connected to the land area 102 and is used to drain water from the land area 102. The water outlets of the first downpipe 105, the second downpipe 106, and the third downpipe 112 are all connected to the sump 2. The second downpipe 106 is equipped with an electric ball valve 108.

[0067] The water pump 204 is disposed in the sump 2. The water outlet of the water pump 204 is connected to the water inlet of the first water supply pipe 107. The water outlet of the first water supply pipe 107 is connected to the water area 101. The water pump 204 delivers the water in the sump 2 to the water area 101 through the first water supply pipe 107.

[0068] If water area 101 in the tidal tank is at high tide, electric ball valve 108 opens, and water begins to flow from second downpipe 106. The tide begins to recede in water area 101, and the water level in water area 101 begins to drop. When the water level in water area 101 drops below that of first downpipe 105, only second downpipe 106 begins to flow. After that, the water flow from first uppipe 107 and from second downpipe 106 reaches equilibrium, and water area 101 is at low tide.

[0069] The overflow height of the divider 103 is higher than the low tide level of the water zone 101 and lower than the high tide level of the water zone 101. When the water level in the water zone 101 exceeds the overflow height of the divider 103, the water in the water zone 101 overflows through the divider 103 into the land zone 102, submerging the land layer 117 in the land zone 102. During low tide in the water zone 101, when the water level falls below the overflow height of the divider 103, the water in the water zone 101 no longer flows into the land zone 102. Because the third downpipe 112 remains unobstructed, the water in the land zone 102 continues to flow through the third downpipe 112 into the sump 2. Given enough time, the accumulated water in the land zone 102 can be completely drained, exposing the entire land layer 117.

[0070] The height of the low tide level of water zone 101 is determined by the overflow height of the overflow device. As long as the overflow height of the overflow device is high, the height of the low tide level of water zone 101 will also be high. Therefore, water zone 101 can still have a high water level at low tide to meet the water needs of aquatic organisms. On the other hand, the accumulated water inside the land area 102 can be discharged into the bottom tank 2 through the third downpipe 112. Therefore, the land layer 117 in the land area 102 can be fully exposed, forming a relatively deep and well-permeable land layer 117 to meet the needs of intertidal organisms for the land layer 117. The fluctuation amplitude of water zone 101 only needs to be a few centimeters, but the thickness of the land layer 117 in the land area 102 can reach tens of centimeters, which can meet the needs of most intertidal burrowing organisms.

[0071] The water area 101 of the tidal tank of the present invention maintains a high water level at low tide, while the land area 102 has a high land layer 117. This ensures that the water requirements of aquatic organisms and the land layer 117 requirements of intertidal organisms are met, thus facilitating the growth of both intertidal and aquatic organisms. Furthermore, the high land layer 117 allows intertidal burrowing organisms to dig deeper burrows, which is beneficial for their survival and enhances the viewing experience.

[0072] Electric ball valve 108 is controlled by a timer switch. It can be a normally open type: it opens when power is off and closes when power is on; or a normally closed type: it opens when power is on and closes when power is off. The difference between the two types lies in the different settings of the timer switch: with a normally open type, the tide rises when the timer switch is on and falls when the timer switch is off; with a normally closed type, the opposite is true. The following description uses the normally open type as an example.

[0073] Initial stage of high tide in water zone 101: Figure 6 Schematic diagram of the structure of the water and land tidal tank when the water area 101 is at low tide. Figure 6The time switch is in the off state, so the normally open electric ball valve 108 is in the open state, and the water area 101 is maintained at the low tide level. When the time switch is powered on, the electric ball valve 108 is closed, and the water area 101 stops draining, but the water supply from the first water supply pipe 107 continues as usual. Therefore, the water level in the water area 101 rises and the water level in the bottom tank 2 drops. Figure 2 As shown, attached Figure 2 This is a schematic diagram of the structure of the water and land tidal tank at the initial stage of high tide.

[0074] Water Zone 101 High Tide Final Stage: Please refer to the attached Figure 3 , attached Figure 3 This is a schematic diagram of the structure of the tidal cylinder at 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 divider 103, water overflows into land zone 102, gradually submerging the surface of land layer 117 and seeping downward. Because the rate of water seepage is very slow, the rate of water inflow into land zone 102 exceeds the rate of water seepage, causing the water level in land zone 102 to gradually rise. As the water level in land zone 102 rises, the rate of water seepage also accelerates, eventually achieving equilibrium between the water inflow and water seepage rates, maintaining the water level in land zone 102 at a constant level. Meanwhile, in water zone 101, as the water level rises, once it exceeds the inlet of first downpipe 105, water begins to flow through it. The water flow from first uppipe 107 gradually balances with the flow from first downpipe 105, and water zone 101 reaches high tide.

[0075] Initial stage of low tide in water zone 101: When the timer switch is powered off, the electric ball valve 108 opens and the second downpipe 106 is connected, so the downpipe flow rate increases significantly. The water level in water zone 101 of the main tank 1 begins to drop, and the water level in the bottom tank 2 begins to rise. Please refer to the attached Figure 4 , attached Figure 4 This is a schematic diagram of the structure of the water and land tidal tank at the initial stage of low tide.

[0076] When the water level in the water area 101 drops below the overflow height of the partition plate 103, the water area 101 stops supplying water to the land area 102, and the water level in the land area 102 begins to drop. Since the water level in the land area 102 drops much slower than that in the water area 101, when the water level in the water area 101 drops to the low tide level, the water level in the land area 102 only drops a small amount. However, the water level in the land area 102 will continue to drop over a period of time, exposing the land layer 117. Eventually, the entire land layer 117 will be fully drained of its internal water. Please refer to the attached Figure 5 , attached Figure 5 This is a schematic diagram of the structure of the terrestrial and water tidal tank at the final stage of low tide.

[0077] As the water level in the water area 101 drops, the water level is lower than the water inlet of the first downpipe 105, and the first downpipe 105 stops discharging water. After that, the amount of water discharged from the second downpipe 106 and the amount of water supplied from the first uppipe 107 gradually reach a balance, and the water area 101 is maintained at a low tide level. Please refer to the attached figure. Figure 6 , attached Figure 6 It is a structural schematic diagram of the water and land tidal tank when the water area 101 is at low tide.

[0078] Please refer to the attached Figure 1 The first downpipe 105, the second downpipe 106, and the third downpipe 112 share a common outlet. This outlet should be appropriately enlarged to prevent the water from flowing out of the first downpipe 105, the second downpipe 106, and the third downpipe 112 from interfering with each other and reducing drainage noise. A filter bag can be placed at the outlet to filter the water entering the sump 2.

[0079] The water inlet of the first downpipe 105 determines the water level of the water area 101 at high tide. The first downpipe 105 is provided with a regulating valve, and adjusting the regulating valve to an appropriate range can reduce the noise of the downpipe.

[0080] The second sewer pipe 106 is normally launched at low tide and during ebb tide in the water area 101 . A regulating valve is provided on the second sewer pipe 106 to reduce the noise of the second sewer pipe 106 .

[0081] The water pump 204 is preferably a variable frequency water pump with adjustable flow rate.

[0082] In a specific implementation of the present invention, the overflow of the water area 101 into the lower water area 104 is a backpack overflow. Figure 1 -Attached Figure 6 The overflow is a backpack, specifically structured as follows: a backpack is disposed on the outside of a master cylinder side panel 118 of the master cylinder 1. The backpack specifically comprises a backpack side panel 109 and a backpack bottom panel 110. The backpack side panel 109 comprises a first side panel opposite the master cylinder side panel 118, a front side panel and a rear side panel located between the first side panel and the master cylinder side panel 118, the front side panel and the rear side panel facing each other, and the front side panel, the rear side panel, and the first side panel are arranged to form a U-shaped structure. The portion of the master cylinder side panel 118 corresponding to the backpack side panel 109, the backpack side panel 109, and the backpack bottom panel 110 collectively form a lower water area 104. In this embodiment, the lower water area 104 is located outside the water area 101, thereby ensuring that the water area 101 has sufficient space.

[0083] As can be seen from the above description, the water in the water area 101 overflows to the lower water area 104 through the 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 cylinder. The notch 1181 corresponds to and is connected to the upper end of the backpack. Figure 20As shown, the main cylinder side panel 118 has a notch 1181 only at the location corresponding to the backpack. After the notch 1181 is provided, the height of the main cylinder side panel 118 at the location where the notch 1181 is provided is lower than the height of the main cylinder side panel 118 at the location where the notch 1181 is provided. The fish intercepting comb 115 is located on the inner side of the main cylinder side panel 118, and the fish intercepting comb 115 and the main cylinder side panel 118 form a first overflow channel. The lower and upper portions of the fish intercepting comb 115 are respectively provided with first fish intercepting holes, which connect the water area 101 with the first overflow channel. The first overflow channel communicates with the backpack, or in other words, the lower water area 104, through the space at the top of the main cylinder side panel 118.

[0084] When the second downpipe 106 is launched, 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 upper and lower parts of the fish blocking comb 115; the water in the first overflow channel overflows into the backpack through the top surface of the main cylinder side plate 118, and then flows into the bottom cylinder 2 through the second downpipe 106.

[0085] The first water supply pipe 107 can be located outside the backpack or inside the backpack. In the embodiment where the first water supply pipe 107 is located inside the backpack, the first water supply pipe 107 extends upward after passing through the backpack bottom plate 110, and ultimately leads to the water area 101. To save space, the first water supply pipe 107, the first water supply pipe 105, and the second water supply pipe 106 are arranged parallel to the main cylinder side plate 118. In this specific embodiment, the backpack bottom plate 110 should be raised as much as possible to reduce the water capacity of the backpack area. When the water area 101 is at low tide, the amount of water in the backpack area is very small, and at high tide, the water level in the backpack area will also rise. If the water capacity of the backpack area is large, the amount of water required by the water area 101 at high tide will increase, thereby requiring the expansion of the water storage capacity of the bottom cylinder 2.

[0086] In the embodiment where the water discharge area 104 is a water discharge backpack, the first water discharge pipe 105 and the second water discharge pipe 106 can be two separately provided pipes, such as Figure 1 As shown, the first downcomer 105 and the second downcomer 106 are arranged side by side. The first downcomer 105 and the second downcomer 106 can also be connected to each other in a sleeve manner. Specifically, the second downcomer 106 is sleeved outside the first downcomer 105 .

[0087] In another specific embodiment of the present invention, please refer to the attached Figure 7 , attached Figure 7The present invention provides a schematic diagram of a structure in which a drainage area 104 is located within a water area 101 and includes an outer tube 122. A first drainage pipe 105 and a second drainage pipe 106 are disposed within the outer tube 122. The outer tube 122, the first drainage pipe 105, and the second drainage pipe 106 form a triple overflow drainage pipe. The top of the outer tube 122 is capped, and second fish interceptors are provided at the top and bottom of the outer tube 122, respectively. These second fish interceptors allow water from the water area 101 to flow into the drainage area 104 while preventing fish from entering the drainage area 104. The second drainage pipe 106 is sheathed around the first drainage pipe 105.

[0088] During low tide in water area 101, when the water level falls below the inlet of first downcomer pipe 105, water is discharged only through second downcomer pipe 106. The discharge process is as follows: water in water area 101 flows through the second fish interceptor hole and into the space between outer pipe 122 and second downcomer pipe 106. The water then overflows through the inlet of second downcomer pipe 106, flows between the second downcomer pipe 106 and first downcomer pipe 105, and ultimately flows into sump 2. During high tide in water area 101, electric ball valve 108 is closed, and second downcomer pipe 106 no longer discharges water. At this point, first downcomer pipe 105, whose inlet is above the water level, also stops discharging water. Only first intake pipe 107 then draws water into water area 101, and thus, high tide begins in water area 101. When the water level in the water area 101 is higher than the water inlet of the first downpipe 105, the first downpipe 105 starts to discharge water, and then the water supply of the first uppipe 107 and the water discharge of the first downpipe 105 gradually reach a balance, and the water area 101 reaches a high tide level.

[0089] In embodiments where the drain area 104 is located within the water area 101 and is formed by the outer tube 122, only one inner tube 123 can be installed within the outer tube 122 to form a double overflow pipe structure. The double overflow pipe has a smaller diameter than a triple overflow pipe, which enhances the aesthetic appeal of the tidal aquarium. Fish traps are installed above and below the outer tube 122 of the double overflow pipe. The inner tube 123 serves as the drain pipe, which communicates with the sump 2 via a first drain pipe and a second drain pipe. Both the first and second drain pipes are equipped with valves. When both valves are open, water from the sewer pipe enters the sump 2 through the first drain pipe and the second drain pipe at the same time, the sewer flow is large, and the water area 101 is maintained at a low tide level; when the valve of one of the first drain pipe and the second drain pipe is closed, water from the sewer pipe can only enter the sump 2 through the other of the first drain pipe and the second drain pipe. At this time, the sewer flow decreases, and the water level in the water area 101 rises. The rising water level in the water area 101 will cause the overflow pressure to increase, causing the sewer flow to gradually increase. At the same time, the increase in the water pump head causes the water flow to gradually decrease. When the water level in the water area 101 rises to a certain level, the upper and lower water flows reach a balance, and the water level in the water area 101 no longer rises, and is maintained at a high tide level.

[0090] The first drain pipe and the second drain pipe are connected to the bottom tank 2 through the main drain pipe. At least one of the first drain pipe, the second drain pipe and the main drain pipe is provided with a valve for reducing the noise of launching water at low tide.

[0091] Please refer to the attached Figure 8 -Attached Figure 10 , attached Figure 8 Schematic diagram of the structure of the tidal cylinder in an empty state when the land layer 117 is a beach. Figure 9 Schematic diagram of the structure of the tidal tank at low tide when the land layer 117 is a beach. Figure 10 This is a schematic diagram of the structure 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 solely sandy and does not contain muddy mud, there is no need to worry about water containing muddy mud flowing through the partition 103 into the water area 101 and contaminating it. Therefore, the partition 103 can simply be a flat plate. During high tide, the water level in the water area 101 will exceed the partition 103, directly flooding the land area 102, and the water level can rise quite high. The water inlet of the first downpipe 105 must also be raised accordingly to accommodate the higher tides. When the water level in the water area 101 rises sufficiently, aquatic fish and other organisms in the water area 101 will also swim with the tide to the land area 102, thereby enhancing the ornamental value of the tidal tank.

[0092] The sand used in the land area 102 should be coarse, especially on the surface. Fine sand should not be used because 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, fiddler crabs cannot be cultured. However, sand crabs and other beach dwellers can be cultured, and mangroves can also be planted.

[0093] Please refer to the attached Figure 9 At low tide, the water level in the water area 101 is lower than the height of the partition plate 103, and the water in the water area 101 no longer flows into the land area 102. At the same time, the water supply of the first water supply pipe 107 and the water discharge of the second water supply pipe 106 reach a balance.

[0094] Please refer to the attached Figure 10 At high tide, the water in the water area 101 is connected to the water in the land area 102. The water supply of the first water supply pipe 107 is balanced with the water supply of the first water supply pipe 105.

[0095] The land layer 117 may be formed by sand alone or by sand and mudflats. Figure 2The lower layer of the land layer 117 consists of clean sand, while the upper layer consists of a mixture of sand and mud. A small area in the upper layer can also be reserved for pure mud to meet the needs of certain intertidal organisms. However, due to its poor permeability, the area of ​​pure mud should not be too large to prevent water from penetrating into the water. Furthermore, mud is viscous and will only be washed away by fast currents. The water infiltrating the land area 102 flows slowly downward and does not wash away the mud.

[0096] The sandy beaches or mudflats of land area 102 contain organic matter (algae, nematodes, organic debris, etc.) that can feed on intertidal organisms. Algae and nematodes grow and multiply under suitable conditions of light, sand or mud, salinity, and humidity. Organic debris primarily comes from plankton and its remains, feed debris, and fecal particles of aquatic organisms in water area 101. During high tide in water area 101, it is carried by the current to land area 102 and then deposited on the surface of land layer 117. Light can come from natural sunlight or artificial light sources suitable for the growth of ordinary plants.

[0097] If land layer 117 is composed of a combination of sand and mud, it is necessary to prevent the water in water zone 101 from communicating with land zone 102 through the space above divider 103. If the water in land zone 102 and water zone 101 merge, the mud in land zone 102 could flow into water zone 101 with the tide, contaminating it. Therefore, in one embodiment of the present invention, the height of divider 103 is set higher than the high tide level of water zone 101, while the overflow height of divider 103 is lower than the height of divider 103.

[0098] Please refer to the attached Figure 11 , attached Figure 11 This is a schematic diagram of the structure of the tidal tank when it is empty. Figure 11A connecting pipe 120 is provided on the partition plate 103 in the water zone 101 and extends through the connecting pipe 120. 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 water inflow into the land zone 102 exceeds the water outflow from the land zone 102, thereby raising the water level in the land zone 102 and submerging 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 pipe of the regulating valve is long, the pipe of the regulating valve can be directly connected to the connecting pipe 120 and extends through the partition plate 103. A fish net needs to be set at the pipe opening of the connecting pipe 120 facing the water area 101 to prevent fish and other creatures in the water area 101 from entering.

[0099] For specific embodiments of this utility model, please refer to the attached Figure 6 A tide pool 116 is provided on the upper surface of the land layer 117 of the land area 102. The tide pool 116 is located below the outlet of the connecting pipe 120. The tide pool 116 can be specifically a small dish. The main function of the tide pool 116 is to moderate the water flow and prevent the water flowing out of the connecting pipe 120 from directly impacting the mud and sand on the beach. The water flowing out of the outlet of the connecting pipe 120 first flows into the tide pool 116 and then overflows from the tide pool 116 to the surface of the land layer 117. In addition, organisms in the land area 102 can enter the tide pool 116 to soak in the water. The inner wall surface of the tide pool 116 should be relatively rough. This can be achieved by providing an anti-slip mesh plate on the inner wall surface, or by providing grooves and / or protrusions on the inner wall surface to form a rough inner wall surface of the tide pool 116, so as to facilitate the organisms to climb out of the tide pool and return to the land area 102. After laying the mudflat, tide pool 116 is placed directly below the outlet of connecting pipe 120. To improve the stability of tide pool 116, the bottom of tide pool 116 can be sunken into land layer 117. This reduces the distance between the opening of tide pool 116 and the upper surface of land layer 117, further reducing the impact of water flow on land layer 117 and facilitating the entry of various organisms in land area 102 into tide pool 116.

[0100] Some creatures in the tidal tank, such as mudskippers, frequently move back and forth between the land area 102 and the water area 101. If the mudskippers enter the water area 101 directly from the land area 102, the mud and sand stuck on the mudskippers will be brought to the water area 101, thereby polluting the water area 101. For this reason, the present invention is designed with a water tank 121 in the specific embodiment, please refer to the attached Figure 1The partition plate 103 includes a partition plate body 1031 and a water tank 121 disposed on the side of the partition plate body 1031 facing away from the water zone 101. The side of the water tank 121 close to the water zone 101 is connected to the water zone 101, so that the water in the water zone 101 can enter the water tank 121. Like the partition plate 103, the water tank 121 is connected to the front and rear side panels of the main cylinder 1. The side of the water tank 121 away from the water zone 101 has a first tank side panel 1032. The top surface of the first tank side panel 1032 is higher than the high tide level of the water zone 101. The connecting pipe 120 is disposed on the first tank side panel 1032. When organisms in the land area 102 enter the water zone 101, they will first pass through the water tank 121. When passing through the water tank 121, the water in the water tank 121 will cause the mud and sand on the organisms to fall off, so that the organisms will not pollute the water zone 101 after entering the water zone 101. The sediment falling from the organisms settles to the bottom of the water tank 121 .

[0101] On the side of the water trough 121 near the water area 101, the upper portion of the partition plate body 1031 forms a second trough side panel of the water trough 121. The top surface of the second trough side panel is lower than the low tide level of the water area 101. This ensures that the water in the water trough 121 and the water area 101 remain connected, whether the water area 101 is at high tide or low tide. This facilitates the flow of water between the water trough 121 and the water area 101, and facilitates the suction of sediment in the water trough 121.

[0102] Please refer to the attached Figure 12 , attached Figure 12 This diagram illustrates the structure of a tidal tank with tilted divider 103. Divider 103 slopes gradually from bottom to top toward land area 102, creating a more natural coastal effect. Furthermore, a non-slip mesh panel 119 is installed on the side of divider 103 near water area 101. Inhabitants in water area 101, such as crabs, crawl along non-slip mesh panel 119 into land area 102.

[0103] Please refer to the attached Figures 1-11 , is an embodiment in which the partition plate 103 is arranged in a vertical direction, and the partition plate 103 is not inclined toward the landing area 102, as shown in FIG. Figure 1 As shown, the bottom wall of the master cylinder 1 is arranged in the horizontal direction, and the partition plate 103 is perpendicular to the bottom wall of the master cylinder 1.

[0104] Please refer to the attached Figure 1In order to prevent the sand in the land area 102 from entering the bottom cylinder 2 through the third sewer pipe 112, a specific embodiment of the present invention sets a filter layer at the bottom of the land area 102. The land layer 117 is arranged above the filter layer. The filter layer blocks the sand and allows water to flow. In order to improve the smoothness of drainage, this embodiment sets a bottom filter frame 114 below the filter layer. The bottom filter frame 114 is a grid frame with supporting legs, and its function is to pad the filter layer and form a water flow space below it, which is conducive to the land layer 117 to seep into the water flow space. The water seeping from the land layer 117 flows into the water flow space after being filtered by the filter layer, and then flows into the bottom cylinder 2 through the third sewer pipe 112.

[0105] Please refer to the attached Figure 1 The filter layer is specifically nanobricks 113. Nanobricks are a type of aquarium filter material, originally used for biochemical filtration in fish tanks. In this embodiment, nanobricks 113 are arranged below the mud and sand layer in the land area 102. Their function is to intercept and filter particles such as sand in the water while allowing water and mud to pass through.

[0106] The nanobrick 113 can be a whole nanobrick or a combination of multiple small nanobricks. When splicing, it is important to seal the gaps on the upper surface with landscaping mud, cement, or other materials, or use sealing rings, sealing strips, etc. to prevent sand from falling in.

[0107] A sealing ring is provided in the gap between the nano bricks 113 and the cylinder wall of the land area 102 to prevent sand from falling into the water flow space.

[0108] In another specific implementation of this utility model, please refer to the attached Figure 13 The filter layer is a filter screen 123. The filter screen 12 is a hard filter screen resistant to seawater corrosion, such as a titanium screen. The aperture size of the filter screen 123 is preferably such that it can intercept sand and can pass through water and mudflats.

[0109] Please refer to the attached Figure 9 Land area 102 is paved with clean sand, creating a beach. Since sand does not retain as much water as muddy mud, the beach in land area 102 becomes drier after low tide. To maintain the beach's humidity, the present invention employs a design in which nanobrick protrusions are positioned beneath nanobricks 113. These protrusions extend toward the water flow space, extending to half the height of the water flow space. When the tide recedes in land area 102, water in the water flow space can seep upward through the nanobrick protrusions and nanobricks 113 into the beach, maintaining its humidity.

[0110] The above solution can also be used when the land area is a tidal tank with mudflats.

[0111] The third downpipe 112 is equipped with a regulating valve that adjusts the water level within the water flow space. When the regulating valve is opened wider, the water level drops, the nanobrick protrusions lose contact with the water surface, and water absorption ceases. When the regulating valve is opened narrower, the water level rises, the nanobrick protrusions contact the water surface, and water absorption begins upward. Therefore, by adjusting the regulating valve, it is possible to control water absorption by penetration or by non-penetration. This regulating valve also reduces the noise of water flowing into the third downpipe 112.

[0112] Please refer to the attached Figure 1 In addition to the first water pipe 107, the water pipe also includes a second water pipe 111. The water inlet of the second water pipe 111 is connected to the water outlet of the water pump 204. The water outlet of the second water pipe 111 is located in the water flow space, and the water outlet of the second water pipe 111 is provided with a branch pipe for changing the direction of water outlet. The branch pipe is located in the water flow space to prevent water flow from impacting the filter layer. The branch pipe of the water outlet of the second water pipe 111 can also be in the horizontal direction or downward relative to the horizontal direction. Figure 1 As shown, the water 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.

[0113] Regulating valves are respectively provided on the second water supply pipe 111 and the first water supply pipe 107. Water from the water pump 204 can enter the water flow space through the second water supply pipe 111 to flush the bottom of the filter layer, thereby preventing the filter layer from being blocked.

[0114] The water output by the water pump 204 is simultaneously sent to the first water supply pipe 107 and the second water supply pipe 111. The regulating valves on the first water supply pipe 107 and the second water supply pipe 111 are used to adjust the flow rates in the first water supply pipe 107 and the second water supply pipe 111.

[0115] In order to prevent the water in the water area 101 from flowing back to the sump 2 during a power outage, an anti-siphon hole may be provided on the first water supply pipe 107 , or a check valve may be provided in the first water supply pipe 107 .

[0116] The amphibious tidal tank further comprises a spray device 3 , which comprises at least one nozzle 302 and a spray pipe 301 connected to the nozzle 302 . The water inlet of the spray pipe 301 is connected to a fresh water source for cleaning the inner wall of the main tank 1 .

[0117] In the embodiment where the spraying device 3 has one nozzle 302 , the nozzle is disposed above the middle position of the main cylinder and can simultaneously rinse the land area and the water area.

[0118] In the embodiment where the spraying device 3 has at least two nozzles 302 , some of the nozzles are located above the land area, and some of the nozzles are located above the water area.

[0119] The fresh water source can come from a water storage container, which is pumped by a pump; or from a water pipe equipped with a water purification device, which is controlled by a solenoid valve. The nozzle 302 is of a wide-angle type so that it can spray as far as possible in all directions when spraying. When the water level in the water area 101 of the main cylinder 1 drops to low tide, the spray device 3 is turned on to flush the seawater attached to the cylinder wall into the water to avoid salt stains left after the seawater on the cylinder wall evaporates. The timing of spraying should be chosen after the water level in the water area 101 drops to low tide and before the seawater attached to the cylinder wall evaporates. This time is controlled by a timer switch. The main function of the spray device 3 is to keep the inner wall of the main cylinder 1 clean, which is beneficial to the ornamental effect.

[0120] Please refer to the attached Figure 14 and attached Figure 15 , attached Figure 14 This is the water level diagram of sump 2 at low tide in water area 101. Figure 15 This is a diagram of the water level in the sump 2 at high tide in water area 101. The sump 2 of the tidal aquarium in the present invention is structurally similar to the sump 2 of a conventional bottom-filtering fish tank. Its interior is divided into several functional compartments 205, with a partition plate assembly positioned between each adjacent functional compartment 205. The partition plate assembly includes opposing baffles 202 and overflow plates 203. The baffles 202 guide the water flow, allowing it to flow through each functional compartment 205. The overflow plates 203 allow water in one functional compartment 205 to overflow into the next functional compartment 205. If the water level in the sump 2 exceeds the height of the baffles 202, the water will flow directly over the baffles 202, affecting the filtration efficiency of the sump 2. Therefore, the height of the baffles 202 determines the maximum water level in the sump 2. The overflow plates 203 limit the minimum water level of the functional compartment 205 in front of them. Since the second functional compartment 205 of the sump 2, along the direction of water flow, is typically a skimmer compartment (for a protein skimmer), the skimmer compartment needs to maintain a stable water level. However, when the water area 101 of the main tank 1 is high tide, the water volume in the sump 2 decreases, and when the water area 101 of the main tank 1 is low tide, the water volume in the sump 2 increases. To ensure that the water level in the skimmer compartment remains stable despite changes in the water volume of the sump 2, the overflow plates 203 between the first two compartments, that is, the overflow plates 203 upstream and downstream of the skimmer compartment, need to be appropriately raised. However, the overflow plates 203 are still lower than the baffles 202, and the overflow plates 203 are then appropriately lowered. In this way, changes in the water volume of the sump 2 are concentrated in the functional compartment 205 behind the skimmer compartment. The two overflow plates 203 located upstream and downstream of the skimmer compartment can be of equal height, or the overflow plate 203 located upstream of the skimmer compartment can be 0-3 cm higher than the overflow plate 203 located downstream of the skimmer compartment.

[0121] Please refer to the attached Figure 16 and attached Figure 17 , attached Figure 16 This is the water level diagram of sump 2 at low tide in water area 101. Figure 17This is a diagram of the water level in sump 2 during high tide in water zone 101. If land area 102 of main tank 1 is set as a beach, and the tide in water zone 101 fluctuates significantly, the water level in sump 2 will fluctuate significantly. In this case, the baffle 202 of sump 2 is essentially the same height as that of a conventional sump-filtered fish tank, while the overflow plate 203 is appropriately lowered, gradually descending further back in the water flow direction, forming a stepped pattern. This allows the baffle 202 and overflow plate 203 to continue to properly direct the water flow, even if the water level in sump 2 fluctuates significantly. The water level in all functional compartments 205 of sump 2 can then fluctuate, with the fluctuation increasing towards the back.

[0122] In the description of the present invention, it should be noted that the terms "upper", "lower", "bottom", "horizontal", "center", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present application.

[0123] Unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly. For example, they can refer to fixed, removable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0124] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one 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 present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A tidal tank for water and land, comprising a main tank (1) and a bottom tank (2), characterized in that: Also includes: a partition plate (103), the partition plate (103) being arranged in the master cylinder (1), the partition plate (103) dividing the master cylinder (1) into a water zone (101) and at least one land zone (102), the water in the water zone (101) being able to overflow into the land zone (102) through the partition plate (103), the overflow height of the partition plate (103) being lower than the high tide level of the water zone (101) and higher than the low tide level of the water zone (101); An overflow device and a water area (104), wherein water in the water area (101) that is higher than the low tide level overflows into the water area (104) through the overflow device; A first downpipe (105), a second downpipe (106) and a third downpipe (112), wherein the first downpipe (105) and the second downpipe (106) are arranged in the downpipe area (104), the water inlet of the first downpipe (105) is higher than the water inlet of the second downpipe (106), the water inlet of the second downpipe (106) is not higher than the overflow height of the overflow device, the water inlet of the third downpipe (112) is in communication with the land area (102), the water outlet of the first downpipe (105), the water outlet of the second downpipe (106) and the water outlet of the third downpipe (112) are all in communication with the bottom tank (2), and the second downpipe (106) is provided with an electric ball valve (108); A first water supply pipe (107) and a water pump (204), wherein the water pump (204) is arranged in the bottom tank (2), the water outlet of the water pump (204) is connected to the water inlet of the first water supply pipe (107), and the water outlet of the first water supply pipe (107) is connected to the water area (101).

2. The terrestrial and underwater tidal tank according to claim 1, characterized in that: The water discharge area (104) is a backpack arranged on the main cylinder side plate (118) of the main cylinder (1), the backpack comprising a backpack side plate (109) and a backpack bottom plate (110), the backpack side plate (109) comprising 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 corresponding portion 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 enclose the water discharge area (104), and the water inlets of the first water discharge pipe (105) and the second water discharge pipe (106) are located on the backpack; The overflow device comprises: a first fish intercepting comb (115) disposed on the inner side of the main cylinder side plate (118), wherein the first fish intercepting comb (115) and the main cylinder side plate (118) enclose a first overflow channel, and first fish intercepting holes are respectively disposed at the lower portion and the upper portion of the first fish intercepting comb (115), wherein the first fish intercepting holes communicate with the water area (101) and the first overflow channel; A notch (1181) is provided on the main cylinder side plate (118), and the notch (1181) is correspondingly connected to the upper end of the backpack.

3. The terrestrial and underwater tidal tank according to claim 1, characterized in that: The water discharge area (104) is an outer tube (122) arranged in the water area (101), and the upper and lower parts of the outer tube (122) are respectively provided with second fish intercepting holes connected with the water area (101), the first water discharge pipe (105) and the second water discharge pipe (106) are located in the outer tube (122), and the second water discharge pipe (106) is sleeved outside the first water discharge pipe (105).

4. The terrestrial and underwater tidal tank according to claim 1, characterized in that: The water in the water area (101) overflows into the land area (102) through the top surface of the partition plate (103).

5. The terrestrial and underwater tidal tank according to claim 1, characterized in that: The top surface of the partition plate (103) is higher than the high tide level of the water area (101); a connecting pipe (120) is provided on the upper portion of the partition plate (103); the height of the connecting pipe (120) is higher than the low tide level and lower than the high tide level; water in the water area (101) overflows into the land area (102) through the connecting pipe (120); and the flow cross section of the connecting pipe (120) is adjustable.

6. The terrestrial and underwater tidal tank according to claim 5, characterized in that: A tidal pool (116) is provided on the upper surface of the land layer (117) of the land area (102), and the tidal pool (116) is located below the water outlet of the connecting pipe (120); The pool wall of the tide pool (116) is provided with an anti-slip grid plate.

7. The terrestrial and underwater tidal tank according to claim 5, characterized in that: The partition plate (103) includes a partition plate body (1031), and also includes a water tank (121) arranged on the side of the partition plate body (1031) facing away from the water area (101), the side of the water tank (121) close to the water area (101) is connected to the water area (101), and the side of the water tank (121) away from the water area (101) has a first tank side plate (1032), the top surface of the first tank side plate (1032) is higher than the high tide level of the water area (101), and the connecting pipe (120) is arranged on the first tank side plate (1032).

8. The terrestrial and underwater tidal tank according to claim 7, characterized in that: On the side of the water trough (121) close to the water area (101), the upper part of the partition plate body (1031) forms a second trough side plate of the water trough (121), and the top surface of the second trough side plate is lower than the low tide level of the water area (101).

9. The terrestrial and underwater tidal tank according to claim 1, characterized in that: The partition plate (103) is gradually inclined from bottom to top toward the land area (102), and a non-slip grid plate (119) is provided on one side of the partition plate (103) close to the water area (101); or, The partition plate (103) is arranged in a vertical direction, and a non-slip grid plate (119) is provided on one side of the partition plate (103) close to the water area (101).

10. The terrestrial and underwater tidal tank according to claim 1, characterized in that: A filter layer is provided at the bottom of the land area (102), the filter layer blocks sand and allows water to flow; a bottom filter frame (114) is provided below the filter layer, the bottom filter frame (114) forms a water flow space between the filter layer and the bottom plate of the land area (102), and a land layer (117) is provided above the filter layer.

11. The terrestrial and underwater tidal tank according to claim 10, characterized in that: The filter layer is formed by nano bricks (113) or a filter mesh (123).

12. The terrestrial and underwater tidal tank according to claim 11, characterized in that: A nanobrick protrusion is provided below the nanobrick (113), and the nanobrick protrusion protrudes toward the water flow space. Water in the water flow space can penetrate upward into the land layer (117) through the nanobrick protrusion and the nanobrick (113).

13. The terrestrial and underwater tidal tank according to claim 10, characterized in that: It also includes a second water supply pipe (111), the water inlet of the second water supply pipe (111) is connected to the water outlet of the water pump (204), and the water outlet of the second water supply pipe (111) is provided with a branch pipe for changing the water outlet direction, and the branch pipe is located in the water flow space to prevent water flow from impacting the filter layer.

14. The terrestrial and underwater tidal tank according to claim 1, characterized in that: The invention also includes a spray device (3), the spray device (3) including at least one nozzle (302) and a spray pipe (301) connected to the nozzle (302), the water inlet of the spray pipe (301) being connected to a fresh water source, and the water outlet of the spray pipe (301) being connected to the nozzle (302), for cleaning the inner wall of the main cylinder (1).

15. The terrestrial and underwater tidal tank according to claim 1, characterized in that: The sump (2) is provided with a plurality of grid plate groups, and the internal area of ​​the sump (2) is divided into a plurality of functional grids (205) by the plurality of grid plate groups, and water entering the sump (2) flows through each of the functional grids (205) in sequence; The partition plate group comprises a baffle plate (202) and an overflow plate (203) arranged opposite to each other, a first water flow channel is formed between the bottom of the baffle plate (202) and the bottom plate of the sump (2), and a second water flow channel is formed between the baffle plate (202) and the overflow plate (203), and water in the upstream functional cell (205) flows into the downstream functional cell (205) in sequence through the first water flow channel, the second water flow channel and the space above the overflow plate (203); Along the water flow direction, the height of the overflow plate (203) in each of the compartment plate groups decreases in sequence.

16. The terrestrial and underwater tidal tank according to claim 15, characterized in that: The plurality of functional grids (205) include a protein skimmer, and the overflow plates (203) of the two grid plate groups constituting the protein skimmer are higher than the overflow plates (203) in the other grid plate groups, and the overflow plate (203) located upstream of the protein skimmer is 0-3 cm higher than the overflow plate (203) located downstream of the protein skimmer.

17. The terrestrial and underwater tidal tank according to claim 1, characterized in that: The third downpipe (112) is provided with a regulating valve for reducing the noise of water discharge from the third downpipe (112).

18. The terrestrial and underwater tidal tank according to claim 1, characterized in that: The master cylinder (1) has a water area (101) and a land area (102); or, The master cylinder (1) comprises one water area (101) and two land areas (102), wherein the water area (101) is located between the two land areas (102), and the water area (101) is connected to the two land areas (102) via the overflow device.

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