A type of tidal tank

Abstract

This invention discloses a tidal tank, comprising a main tank and a filter tank. The main tank is connected to the filter tank via a drain pipe, and the filter tank is connected to the main tank via a water inlet pipe. The invention further comprises: an air chamber disposed within the main tank, wherein the area outside the air chamber within the main tank is a tidal zone, and a channel is provided at the bottom of the air chamber, through which the air chamber communicates with the tidal zone; an air intake device for supplying gas to the air chamber; and an exhaust device, wherein an exhaust port is provided at the top of the air chamber, and the exhaust port communicates with the outside environment through the exhaust device. This invention increases the amplitude of high and low tides in the main tank without increasing the structural size of the filter tank, thereby creating distinct high and low tides in the main tank and promoting the growth of intertidal organisms.

Description

Technical Field

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

[0002] The main purpose of tidal tanks is to simulate the natural environment of the intertidal zone at the seaside in order to better cultivate intertidal organisms such as fiddler crabs, mudskippers, mangroves, and Suaeda salsa.

[0003] A tidal tank consists of a main tank and a filter tank. Water from the main tank flows into the filter tank (this is the main tank drain), and the filtered water flows back into the main tank (this is the main tank fill). When the drain flow rate in the main tank is greater than the fill flow rate, low tide occurs in the main tank. When the drain flow rate is less than the fill flow rate, high tide occurs. When the drain and fill flow rates are balanced, the main tank remains at high or low tide. However, existing tidal tanks have relatively small tidal ranges, failing to create significant high and low tides, thus hindering the growth of intertidal organisms.

[0004] To address the aforementioned issues, those skilled in the art have increased the structural dimensions of the filter tank to ensure the storage of a larger volume of water, thereby enabling the delivery of a greater amount of water to the main tank to create a noticeable high tide. Simultaneously, the larger filter tank can also receive a larger volume of water output from the main tank, creating a noticeable low tide. However, the larger filter tank occupies more space, which is detrimental to the arrangement of the tidal tank.

[0005] How to increase the magnitude of high and low tides in the main tank without increasing the size of the filter cylinder structure, so as to create obvious high and low tides in the main tank and thus facilitate the growth of intertidal organisms, is a key problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] In view of this, the purpose of the present invention is to increase the magnitude of the main tank's high and low tides without increasing the size of the filter tank structure, so as to make the main tank form obvious high and low tides, thereby facilitating the growth of intertidal organisms.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A tidal tank includes a main tank and a filter tank, wherein the main tank is connected to the filter tank via a drain pipe, and the filter tank is connected to the main tank via a water inlet pipe, characterized in that it further includes:

[0009] An air chamber is provided inside the main cylinder. The area inside the main cylinder located outside the air chamber is a tidal zone. A channel is provided at the bottom of the air chamber, and the air chamber communicates with the tidal zone through the channel.

[0010] An air intake device that supplies gas to the air chamber;

[0011] An exhaust device is provided, wherein an exhaust port is provided at the top of the air chamber, and the exhaust port is connected to the outside through the exhaust device.

[0012] Preferably, the air intake device includes:

[0013] A first water pump is installed inside the filter cylinder;

[0014] The first Venturi jet is installed inside the main cylinder, and the first water pump is connected to the water inlet of the first Venturi jet through the water supply pipe.

[0015] An air intake pipe, one end of which is connected to the outside, and the other end of which is connected to the suction end of the first Venturi jet, and the nozzle of the first Venturi jet is connected to the air chamber.

[0016] Preferably, the intake pipe is provided with a first solenoid valve; the exhaust device includes an exhaust pipe, one end of which is connected to the exhaust port and the other end is connected to the outside, and the exhaust pipe is provided with a second solenoid valve.

[0017] Preferably, the air chamber is located near a corner of the main cylinder, and the air chamber is surrounded by an air chamber top plate, an air chamber side plate, and two side plates of the main cylinder forming the corner, with the air chamber side plate forming the channel between the air chamber side plate and the bottom plate of the main cylinder.

[0018] Preferably, a first rain tube is provided at the bottom of the air chamber, the nozzle of the first venturi jet is connected to the inlet of the first rain tube, and a plurality of first spray holes are provided along the length of the first rain tube.

[0019] Preferably, an overflow device is provided in the tidal zone, and the overflow height of the overflow device is lower than the water surface height at low tide in the tidal zone;

[0020] The outlet of the overflow device is connected to the filter cylinder through the drain pipe. A regulating valve group is installed on the drain pipe. When the tide is rising or at high tide in the tidal zone, the regulating valve group is in the low flow rate setting. When the tide is receding or at low tide in the tidal zone, the regulating valve group is in the high flow rate setting.

[0021] Preferably, the drain pipe includes a main drain pipe and a first branch pipe and a second branch pipe connected in parallel. The inlet end of the first branch pipe and the inlet end of the second branch pipe are both connected to the outlet end of the overflow device. The outlet end of the first branch pipe and the outlet end of the second branch pipe are both connected to the inlet end of the main drain pipe. The outlet end of the main drain pipe is connected to the filter cylinder.

[0022] A third solenoid valve is installed on the first branch pipe, and a first regulating valve is installed on the second branch pipe. When the tide is high or at high tide in the tidal zone, the third solenoid valve is closed; when the tide is low or at low tide in the tidal zone, the third solenoid valve is open.

[0023] Preferably, the drain pipe further includes a main inlet pipe, and the inlet ends of the first branch pipe and the second branch pipe are both connected to the outlet end of the main inlet pipe. The main inlet pipe includes a vertical inlet pipe and a horizontal inlet pipe.

[0024] The outlet end of the overflow device is connected to the vertical inlet pipe, and the outlet end of the vertical inlet pipe is connected to the inlet end of the horizontal inlet pipe. A float valve is provided at the intersection of the vertical inlet pipe and the horizontal inlet pipe, and the float of the float valve is located inside the filter cylinder.

[0025] Preferably, the filter cylinder has multiple functional compartments inside, which are connected sequentially by an overflow plate; a filter device is provided above the first functional compartment, the outlet end of the main water pipe is connected to the inlet end of the filter device, the outlet end of the filter device is connected to the first functional compartment, and the first water pump is located in the last functional compartment.

[0026] Preferably, the overflow device is a right-angle overflow device, which includes an outer corner plate and an inner corner plate. The upper and lower parts of the outer corner plate are respectively provided with first comb holes, and a first clamping cavity is formed between the outer corner plate and the inner corner plate. The first comb holes communicate with the first clamping cavity.

[0027] The top edge of the inner corner plate is the first overflow edge, and the inner corner plate and one corner of the main cylinder form an overflow area, and the first overflow edge communicates with the overflow area;

[0028] The top of the outer corner plate is sealed with a first top cover, and the bottom of the overflow area is connected to the drain pipe.

[0029] Preferably, the overflow device is a double overflow pipe, which includes an outer pipe and a core pipe. The lower and upper parts of the outer pipe are respectively provided with second comb holes. A second clamping cavity is formed between the outer pipe and the core pipe. The second comb holes communicate with the second clamping cavity. The top edge of the core pipe is a second overflow edge, which communicates with the inner cavity of the core pipe. The core pipe is connected to the drain pipe. The top of the outer pipe is sealed with a second top cover.

[0030] Preferably, the overflow device is an overflow backpack, which includes a backpack disposed on the outside of the main cylinder, the side plate of the main cylinder on which the backpack is disposed is a backpack side plate, the top of the backpack is closed with a third top cover, and the bottom of the backpack is connected to the drain pipe.

[0031] The overflow backpack also includes a perforated plate, which is disposed within the tidal zone and close to the side panel of the backpack. One side of the third top cover extends into the tidal zone and is connected to the top of the perforated plate. The upper and lower parts of the perforated plate are respectively provided with third perforations. A third cavity is formed between the perforated plate and the side panel of the backpack. The third perforations communicate with the third cavity. An overflow hole communicating with the third cavity and the backpack is provided at the upper part of the third cavity.

[0032] Preferably, the exhaust end of the exhaust pipe is connected to the outside air through a first muffler, and the intake end of the intake pipe is connected to the outside air through a second muffler. The first muffler and the second muffler are two different mufflers, or the first muffler and the second muffler are the same muffler.

[0033] Preferably, the air inlet pipe is further provided with a bypass pipe, the water outlet of the bypass pipe is connected to the air inlet pipe, the water inlet of the bypass pipe is located below the water surface at low tide in the tidal zone, and a fourth regulating valve is provided on the bypass pipe.

[0034] Preferably, the first solenoid valve is a normally closed valve, and the first solenoid valve is a normally closed valve with a energized delay closing type; the second solenoid valve and the third solenoid valve are both normally open valves; the energization and de-energization of the first solenoid valve, the second solenoid valve and the third solenoid valve are all controlled by a timer switch.

[0035] When the timer switch is closed, the first solenoid valve opens, and the second and third solenoid valves close, causing the tidal zone to rise. After a first preset time, the first solenoid valve closes, and the tidal zone continues to rise until the high tide level.

[0036] When the timer switch is turned off, the first solenoid valve closes, and the second and third solenoid valves open, causing the tide in the tidal zone to recede until the low tide level.

[0037] Preferably, the tidal tank further includes a stain removal device, which includes a nozzle facing the inner wall of the main tank and connected to a stain removal water source via a connecting pipe.

[0038] Preferably, the descaling water source is from a tap water pipe, the connecting pipe connects the nozzle to the tap water pipe, and a fourth solenoid valve is provided on the connecting pipe to control the opening or closing of the connecting pipe;

[0039] Alternatively, the descaling water source may be a water storage container, which may contain a third water pump. One end of the connecting pipe may be connected to the nozzle, and the other end may be connected to the outlet of the third water pump.

[0040] Preferably, the nozzle is a fan-shaped nozzle, and there are multiple fan-shaped nozzles arranged along the bore of the main cylinder; or,

[0041] The nozzle is a wide-angle nozzle, which is located near the center of the cylinder port of the master cylinder. The wide-angle nozzle may be one or multiple nozzles arranged at intervals.

[0042] Preferably, a sandy beach may be provided on the outer top wall of the air chamber, and the tidal tank further includes a sand removal device, which includes:

[0043] Second water pump;

[0044] The second Venturi jet is connected to the inlet of the second Venturi jet;

[0045] A vertical tube, the lower end of which is connected to the inlet end of the second Venturi jet, the nozzle of the second Venturi jet facing the beach;

[0046] The float includes a float head and a float tube connected to each other. The float tube is slidably fitted into the vertical tube. The float head floats on the water surface of the tidal zone. The float head is provided with a plurality of water passage holes. One end of each water passage hole is located on the surface of the float head, and the other end is connected to the float tube.

[0047] Preferably, the sand removal device further includes a second rain pipe, which is horizontally arranged above the beach. The water inlet of the second rain pipe is connected to the nozzle of the second Venturi jet. Multiple second nozzles are arranged along the length of the second rain pipe, and the second nozzles face horizontally or obliquely downward.

[0048] As can be seen from the above technical solution, the tidal range of this invention is formed by the superposition of the initial high tide and the subsequent high tide, and similarly, the ebb tide is formed by the superposition of the initial low tide and the subsequent low tide. Therefore, the tidal range of this invention is relatively large. Furthermore, since the initial high tide and initial low tide are achieved through the intake and exhaust of the air chamber, rather than by increasing the total amount of water entering or leaving the tidal range, the water storage capacity of the sump does not need to be increased, nor does the structural size of the sump need to be enlarged. This invention improves the tidal range of the main tank without increasing the structural size of the filter tank, resulting in significant tidal ranges in the main tank, thereby promoting the growth of intertidal organisms. Attached Figure Description

[0049] 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.

[0050] Figure 1 This is a schematic diagram of the tidal tank at the start of high tide, as disclosed in an embodiment of the present invention.

[0051] Figure 2 This is a schematic diagram of the tidal tank continuing to rise as disclosed in an embodiment of the present invention;

[0052] Figure 3 This is a schematic diagram of the tidal tank reaching high tide as disclosed in the embodiments of the present invention;

[0053] Figure 4 This is a schematic diagram of the tide tank at the beginning of low tide as disclosed in the embodiments of the present invention;

[0054] Figure 5 This is a schematic diagram of the tidal tank reaching low tide level as disclosed in the embodiments of the present invention;

[0055] Figure 6 This is a schematic diagram of a tidal tank at low tide, as disclosed in another embodiment of the present invention.

[0056] Figure 7 This is a schematic diagram of a tidal tank with a right-angle overflow device provided in an embodiment of the present invention;

[0057] Figure 8 This is a schematic diagram of a tidal tank with an overflow backpack provided in an embodiment of the present invention;

[0058] Figure 9 This is a schematic diagram of the stain removal device provided in an embodiment of the present invention;

[0059] Figure 10 This is a schematic diagram of the stain removal device provided in another embodiment of the present invention;

[0060] Figure 11 This is a schematic diagram of the structure of the sand removal device provided in an embodiment of the present invention.

[0061] The names of the components are as follows:

[0062] 1-Master cylinder, 2-First water pump, 3-First venturi jet injector, 4-Intake pipe, 5-Exhaust pipe, 6-Air chamber, 7-First deluge pipe, 8-First solenoid valve, 9-Second solenoid valve, 10-Muffler, 11-Third regulating valve, 12-Bypass pipe, 13-Double overflow pipe, 14-Vertical water inlet pipe, 15-Water supply pipe, 16-Filter cylinder, 17-Horizontal water inlet pipe, 18-First branch pipe, 19-Second branch pipe, 2 0-Functional compartment, 21-Filter device, 22-Outlet main pipe, 23-Third solenoid valve, 24-First regulating valve, 25-Second regulating valve, 26-Float valve, 27-Right-angle overflow device, 28-Overflow backpack, 29-Fan-shaped nozzle, 30-Wide-angle nozzle, 31-Second deluge pipe, 32-Float head, 33-Float pipe, 34-Vertical pipe, 35-Second Venturi jet injector, 36-Second water pump, 37-Beach. Detailed Implementation

[0063] In view of this, the core of the present invention is to increase the magnitude of the main tank's high and low tides without increasing the size of the filter tank structure, so that the main tank forms obvious high and low tides, thereby facilitating the growth of intertidal organisms.

[0064] 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.

[0065] Please refer to the attached document. Figure 1 -Appendix Figure 6 The tidal tank of this invention includes a main tank 1 and a filter tank 16. The main tank 1 is connected to the filter tank 16 via a drain pipe. The filter tank 16 is connected to the main tank 1 via a water inlet pipe 15. The flow rate of the drain pipe is controllable, and the flow rate of the water inlet pipe 15 is also controllable. The tidal tank of this invention also includes an air chamber 6, an air intake device, and an exhaust device.

[0066] Air chamber 6 is located inside main cylinder 1, and the area inside main cylinder 1 but outside air chamber 6 is the tidal zone. A channel is provided at the bottom of air chamber 6, connecting air chamber 6 and the tidal zone. An air intake device is used to supply gas to air chamber 6. An exhaust port is provided at the top of air chamber 6, which is connected to the outside via an exhaust device.

[0067] To induce high tide in the tidal zone, gas is supplied to air chamber 6 via the air intake device. The gas rises in air chamber 6 and simultaneously forces water downwards, causing water to enter the tidal zone through the channel at the bottom of air chamber 6, thus inducing an initial high tide. Additionally, by controlling the water flow rate in the main cylinder 1 to be lower than the water flow rate in the main cylinder 1, the water volume in the main cylinder 1 continuously increases, further inducing a high tide.

[0068] To reduce the tide in the tidal zone, the gas in air chamber 6 is expelled through the exhaust device. Water from the tidal zone then enters air chamber 6 through the channel at the bottom of air chamber 6, causing the tidal zone to initially recede. Additionally, by controlling the water flow rate in the main cylinder 1 to be greater than the water flow rate in the main cylinder 1, the water volume in the main cylinder 1 continuously decreases, further reducing the tide.

[0069] The tidal range of this invention features a rise in tide level resulting from the superposition of the initial and subsequent high tides, and similarly, a fall in tide level resulting from the superposition of the initial and subsequent low tides. Therefore, the tidal ranges of this invention are relatively large. Furthermore, since the initial high and low tides are achieved through the intake and exhaust of air chamber 6, rather than by increasing the total amount of water entering or leaving the tidal range, the water storage capacity of the sump does not need to be increased, nor does the structural dimensions of the sump need to be enlarged. This invention improves the tidal range of the main cylinder 1 without increasing the structural dimensions of the filter cylinder 16, resulting in distinct tidal ranges in the main cylinder 1, thereby promoting the growth of intertidal organisms.

[0070] An air intake device could be an air pump, which would draw outside air into the air chamber 6. However, air pumps are noisy during operation, which would reduce the user experience of the tidal tank. In addition, the additional air pump would increase the design difficulty and structural complexity of the tidal tank.

[0071] The air intake device in a specific embodiment of the present invention includes: a first water pump 2, a first Venturi jet 3, and an air intake pipe 4.

[0072] The first water pump 2 is normally open and is located inside the filter cylinder 16. The first Venturi jet injector 3 is located inside the main cylinder 1. The first Venturi jet injector 3 includes a water inlet, a suction end, and a nozzle. The first water pump 2 is connected to the water inlet of the first Venturi jet injector 3 via a water supply pipe 15. One end of the air inlet is connected to the outside, and the other end is connected to the suction end of the first Venturi jet injector 3. The nozzle of the first Venturi jet injector 3 is connected to the air chamber 6.

[0073] During high tide, under the action of the first water pump 2, a negative pressure is generated at the suction end of the first Venturi jet 3, and outside air enters the air chamber 6 through the air inlet pipe 4, the suction end of the first Venturi jet 3, and the nozzle of the first Venturi jet 3. When the amount of air in the air chamber 6 reaches the preset amount, the air inlet pipe 4 is cut off, and the amount of air in the air chamber 6 no longer increases. At this time, under the action of the first water pump 2, water in the filter cylinder 16 enters the air chamber 6 through the water inlet pipe 15, the water inlet of the first Venturi jet 3, and the nozzle of the first Venturi jet 3, and enters the tidal zone through the channel at the bottom of the air chamber 6.

[0074] The exhaust system specifically includes an exhaust pipe 5, one end of which is connected to the exhaust port at the top of the air chamber 6, and the other end is connected to the outside air. A second solenoid valve 9 is installed on the exhaust pipe 5. A first solenoid valve 8 is installed on the intake pipe 4.

[0075] During high tide, the second solenoid valve 9 is closed, and the first solenoid valve 8 is open. That is, during high tide, the exhaust pipe 5 is in a closed state, and the intake pipe 4 is in a conductive state. Outside air enters the air chamber 6 through the intake pipe 4 and the first Venturi jet 3, and is temporarily sealed in the upper region of the air chamber 6. During low tide, the first solenoid valve 8 is closed, and the second solenoid valve 9 is open. The intake pipe 4 is closed, and no more air enters the air chamber 6. The exhaust pipe 5 is conductive, and the air in the air chamber 6 is discharged to the outside air through the exhaust pipe 5. The intake and exhaust of the air chamber 6 can be easily controlled by the first solenoid valve 8 and the second solenoid valve 9.

[0076] In this specific embodiment of the invention, the air chamber 6 is located near a corner of the main cylinder 1. The air chamber 6 is formed by a top plate, a side plate, and two side plates of the main cylinder 1 forming the corner. A channel connecting the air chamber 6 to the tidal zone is formed between the side plate and the bottom plate of the main cylinder 1. In other words, the air chamber 6 is suspended within the main cylinder 1. By locating the air chamber 6 near a corner of the main cylinder 1, the side plates of the main cylinder 1 can be fully utilized to form the air chamber 6, thereby simplifying the structure of the air chamber 6 and saving material costs.

[0077] Specifically, air chamber 6 is formed by the top plate of air chamber 6, the front side plate of air chamber 6, the right side plate of air chamber 6, the rear side plate of main tank 1, and the left side plate of main tank 1. That is, air chamber 6 is located in the rear left corner of main tank 1, and the area near the front side plate of main tank 1 is the tidal zone. The cultured organisms can be located in the area near the front side plate of main tank 1, thus improving the viewing experience of the tidal tank.

[0078] To improve the stability of air chamber 6, a support column can be installed. The bottom of the support column is connected to the bottom plate of the main cylinder 1, and the top of the support column is connected to the top plate of air chamber 6. The support column provides support for air chamber 6.

[0079] In a specific embodiment of the present invention, a first deluge pipe 7 is also provided at the bottom of the air chamber 6. The nozzle of the first venturi jet 3 is connected to the inlet of the first deluge pipe 7. A plurality of first spray holes are uniformly arranged along the length of the first deluge pipe 7, with the first spray holes facing upwards.

[0080] During the process of air intake from the intake pipe 4 into the air chamber 6, the air ejected from the nozzle of the first Venturi jet 3 is evenly distributed along the length of the first deluge pipe 7, and then ejected from each of the first nozzle holes, rising steadily. The process of the air being evenly distributed within the first deluge pipe 7 consumes a certain amount of impact force, thus making the airflow ejected from the first nozzle holes relatively gentle.

[0081] During the process of supplying water to the air chamber 6 through the water pipe 15, the water ejected from the nozzle of the first Venturi jet 3 will first be evenly distributed along the length of the first deluge pipe 7, and then ejected from each of the first nozzles. The water flow will consume a certain amount of impact force during the even distribution process in the first deluge pipe 7, thus making the water flow ejected from the first nozzles relatively gentle. This is beneficial to the life of intertidal organisms on the one hand, and on the other hand, it can prevent the water flow from blowing the air sealed in the upper part of the air chamber 6 out of the air chamber 6.

[0082] An overflow device is installed in the tidal zone of the main cylinder 1, with the overflow height lower than the water level at low tide. This ensures a continuous flow of water from the tidal zone. The outlet of the overflow device is connected to the filter tank 16 via a drain pipe, allowing water from the tidal zone to continuously overflow and enter the filter tank 16 for filtration. The filtered water is then pumped back into the main cylinder 1 by the first water pump 2, ensuring the cleanliness of the water in the main cylinder 1. A regulating valve assembly is installed on the drain pipe, featuring both low and high flow rates.

[0083] During high tide, the regulating valve assembly is in low flow mode. The specific process is as follows: the first solenoid valve 8 is open, and the second solenoid valve 9 is closed. Under the action of the first water pump 2, a negative pressure is formed at the suction end of the first Venturi jet 3. Outside air enters the first Venturi jet 3 through the air inlet pipe 4 and is finally sprayed into the air chamber 6 through the first nozzle on the first deluge pipe 7. The air rises, simultaneously pressurizing the water in the air chamber 6 towards the tidal zone, causing the tidal zone to rise. After the first preset time, the first solenoid valve 8 closes, and no more air enters the air chamber 6. The first water pump 2 continues to operate, pumping water from the filter cylinder 16 into the first Venturi jet 3, and finally spraying it into the air chamber 6 through the first nozzle on the first deluge pipe 7. Since the air in the air chamber 6 is sealed in the upper part of the air chamber 6 at this time, excess water in the air chamber 6 will enter the tidal zone through the channel. At this time, the regulating valve assembly on the drain pipe is in the low flow setting, and the inflow velocity in the tidal zone is greater than the outflow velocity, so the tidal zone continues to rise. The outflow velocity in filter cylinder 16 is greater than the inflow velocity, so the water level in filter cylinder 16 drops. As the water volume in the tidal zone increases, the overflow pressure increases, and the outflow velocity increases. At the same time, due to the increased water level difference between the main cylinder 1 and filter cylinder 16, the head of the first water pump 2 increases, and the inflow velocity decreases. When the inflow and outflow volumes in the tidal zone are equal, the water level in the tidal zone reaches the high tide level.

[0084] During low tide, the regulating valve assembly is in the high-flow setting. The specific process is as follows: the first solenoid valve 8 remains closed, and the second solenoid valve 9 opens. Air in the air chamber 6 is discharged to the outside through the exhaust pipe 5. As the air is discharged, water in the tidal zone flows into the air chamber 6 through the channel, and the tidal zone begins to recede. Because the regulating valve assembly on the drain pipe is in the high-flow setting, the flow rate of the water in the tidal zone is greater than the flow rate of the water in the drain, so the tidal zone continues to recede, and the water level in the filter tank 16 gradually rises. As the water level in the tidal zone drops, the overflow pressure decreases, and the flow rate of the water in the drain decreases. The difference between the water level in the filter tank 16 and the water level in the main tank 1 decreases, the head of the first water pump 2 decreases, and the flow rate of the water in the drain increases. When the flow rates of the water in the drain and the water in the tidal zone are balanced, the tidal zone remains at a low tide level.

[0085] In a specific embodiment of the present invention, the regulating valve assembly specifically includes a first regulating valve 24 and a third solenoid valve 23. The third solenoid valve 23 is disposed on the first branch pipe 18. The first regulating valve 24 is disposed on the second branch pipe 19. The first branch pipe 18 and the second branch pipe 19 are arranged in parallel. The inlet ends of both the first branch pipe 18 and the second branch pipe 19 are connected to the outlet end of the overflow device. The outlet ends of both the first branch pipe 18 and the second branch pipe 19 are connected to the inlet end of the main outlet pipe 22. The outlet end of the main outlet pipe 22 is connected to the filter cylinder 16. The first branch pipe 18, the second branch pipe 19, and the main outlet pipe 22 are components of the drain pipe.

[0086] When the tidal zone reaches high tide, the third solenoid valve 23 on the first branch pipe 18 is closed, allowing water to flow only through the second branch pipe 19, and the regulating valve assembly is in a low flow rate setting. With the third solenoid valve 23 closed, the tidal zone eventually reaches its high tide level. Adjusting the opening of the first regulating valve 24 on the second branch pipe 19 adjusts the height of the high tide level. Specifically, increasing the opening of the first regulating valve 24 lowers the high tide level, while decreasing it raises it. Before the tidal cylinder operates, the opening of the first regulating valve 24 is adjusted to a preset level to achieve the desired high tide level.

[0087] When the tide recedes in the tidal zone, the third solenoid valve 23 on the first branch pipe 18 is in the open state, and the water flow at the outlet of the overflow device can flow through the first branch pipe 18 and the second branch pipe 19 at the same time, and the regulating valve group is in the high flow rate position.

[0088] The present invention also includes a second regulating valve 25 on the main outlet pipe 22, which is used to regulate the total outflow rate. By adjusting the opening of the second regulating valve 25, the noise of the overflow device can be reduced at low tide, and the rate at which the water level in the filter tank 16 rises can be reduced during low tide, making the low tide process more gradual.

[0089] In addition to the main outlet pipe 22, the first branch pipe 18, and the second branch pipe 19, the drain pipe also includes a main inlet pipe. The inlet ends of both the first branch pipe 18 and the second branch pipe 19 are connected to the outlet end of the main inlet pipe. The main inlet pipe includes a horizontal inlet pipe 17 and a vertical inlet pipe 14. The outlet end of the overflow device is connected to the vertical inlet pipe 14, and the outlet end of the vertical inlet pipe 14 is connected to the inlet end of the horizontal inlet pipe 17. A float valve 26 is installed at the intersection of the vertical inlet pipe 14 and the horizontal inlet pipe 17. The float of the float valve 26 is located inside the filter cylinder 16 below the main cylinder 1.

[0090] During the ebb tide, the water level in the filter tank 16 gradually rises. The float on the water surface of the filter tank 16 will rise with the water level. The opening of the float valve 26 will decrease, which will help reduce the flow rate of the water flowing down, thereby helping to balance the flow rates of the water flowing up and down, so as to form a low tide level.

[0091] In the event of an unexpected power outage, the first water pump 2 stops operating, and the filter cylinder 16 only takes in water but does not produce water. After the water level in the filter cylinder 16 rises to a certain level, the float valve 26 will be blocked, thereby preventing the main cylinder 1 from overflowing into the filter cylinder 16 and thus preventing the water in the filter cylinder 16 from overflowing.

[0092] In addition, to prevent water in the main cylinder 1 from flowing back into the filter cylinder 16 through the water inlet pipe 15 during a power outage, thus causing water to overflow from the filter cylinder 16, a check valve is provided on the water inlet pipe 15 in this specific embodiment of the invention. The check valve allows water in the filter cylinder 16 to flow into the main cylinder 1, but does not allow water in the main cylinder 1 to flow into the filter cylinder 16.

[0093] The filter tank 16 has multiple functional compartments 20 connected sequentially by overflow plates. Water in one functional compartment 20 overflows to the next functional compartment 20 via the overflow plates. The overflow plates include a first plate and a second plate, arranged along the water flow direction. The bottom of the first plate has filter holes, through which water enters between the first and second plates. The water between the first and second plates overflows the top of the second plate and flows to the next functional compartment 20. Along the water flow direction, a first water pump 2 is located in the last functional compartment 20.

[0094] Functional compartment 20 can hold filter media, protein skimmers, algae, coral stones, etc. This article does not specifically limit the materials placed in functional compartment 20, that is, it does not specifically limit the function of each functional compartment 20.

[0095] A filter device 21 is installed above the functional compartment 20 at the first end. The outlet end of the main water pipe 22 is connected to the inlet end of the filter device 21, and the outlet end of the filter device 21 is connected to the functional compartment 20 at the first end. The water flowing out of the main water pipe 22 is first filtered by the filter device 21, and then enters the filter tank 16. The filter device 21 and the overflow plate effectively filter the water from the main tank 1.

[0096] The filter device 21 can be a filter box, filter bag, paper roll filter, etc. This article does not make specific limitations on it. As long as it can be used in conjunction with the filter cylinder 16 to achieve filtration, it falls within the protection scope of this article.

[0097] Multiple functional cells 20 can be arranged in a straight line from left to right, or in a square-like arrangement. This paper does not impose specific restrictions on the arrangement of multiple functional cells 20, as long as the water flow can pass through each functional cell 20 in sequence and fall within the protection scope of this paper.

[0098] If the tidal zone is large, the overflow device can be a right-angle overflow device 27. Please refer to the appendix. Figure 7 The right-angle overflow device 27 includes an outer corner plate and an inner corner plate. The upper and lower parts of the outer corner plate are respectively provided with first comb holes. These first comb holes ensure water passage while also intercepting organisms in the tidal zone, preventing them from flowing into the filter tank 16 through the right-angle overflow device 27. A first clamping cavity is formed between the outer and inner corner plates, and both the upper and lower first comb holes of the outer corner plate communicate with this first clamping cavity. The top edge of the inner corner plate is the first overflow edge. The inner corner plate and one corner of the main tank 1 form an overflow area, and the first overflow edge communicates with this overflow area. The water level in the tidal zone is higher than the height of the inner corner plate, thus ensuring continuous overflow and continuous filtration. A first top cover is provided at the top of the outer corner plate, sealing the upper part of the overflow area. The first top cover prevents water in the tidal zone from entering the overflow zone through the top of the inner corner plate, thereby further preventing organisms in the tidal zone from flowing into the filter tank 16 through the right-angle overflow device 27. Water in the tidal zone can only enter the first clamping cavity through the first comb holes at the top and bottom of the outer corner plate, and then overflow to the overflow zone through the top of the inner corner plate, and finally flow into the filter tank 16 through the drain pipe.

[0099] The water inlet pipe 15 used to connect the first water pump 2 and the first Venturi jet 3 can first enter the overflow area, and then connect to the first Venturi jet 3 through the right-angle overflow device 27. At this time, the right-angle overflow device 27 is provided with a hole that mates with the water inlet pipe 15. Alternatively, the water inlet pipe 15 used to connect the first water pump 2 and the first Venturi jet 3 can also bypass the overflow area and extend directly into the tidal area, and then connect to the first Venturi jet 3.

[0100] If the tidal zone is relatively small, the overflow device can be configured as a double overflow pipe 13. Please refer to the appendix. Figure 1 -Appendix Figure 6 The dual overflow pipe 13 includes an outer pipe and a core pipe. The lower and upper parts of the outer pipe are respectively provided with second comb holes. The function of the second comb holes is the same as that of the first comb holes: to allow water to pass through while preventing organisms from the tidal zone from entering the overflow device. A second clamping cavity is formed between the outer pipe and the core pipe. The second comb holes communicate with the second clamping cavity. The top edge of the core pipe is the second overflow edge, which communicates with the inner cavity of the core pipe. The height of the top edge of the core pipe is the overflow height of the dual overflow pipe 13. A second top cover is provided at the top of the outer pipe. Water in the tidal zone can only enter the second clamping cavity through the second comb holes at the upper and lower parts of the outer pipe. Water in the second clamping cavity overflows into the core pipe through the top edge of the core pipe. The core pipe is connected to the drain pipe. Water overflowing into the core pipe flows into the filter tank 16 through the core pipe and the drain pipe. The second top cover prevents organisms from the tidal zone from entering the core pipe through the top port and flowing into the filter tank 16.

[0101] To reduce the number of components within the main cylinder 1 and avoid affecting its aesthetics, this specific embodiment of the invention uses an overflow backpack 28 as the overflow device. Please refer to the appendix. Figure 8 The overflow backpack 28 includes a backpack positioned outside the main cylinder 1. A third top cover is provided at the top of the backpack to prevent water inside the backpack from overflowing from the top. The bottom of the backpack is connected to a drain pipe.

[0102] The overflow backpack 28 also includes a perforated plate. The side panel of the main cylinder 1 with the backpack attached is defined as the backpack side panel. The perforated plate is positioned within the tidal zone and close to the backpack side panel. One side of the backpack's third top cover extends into the tidal zone and connects to the top of the perforated plate. The upper and lower parts of the perforated plate are respectively provided with third perforations. The perforated plate and the backpack side panel form a third cavity. The upper and lower third perforations of the perforated plate communicate with the third cavity. An overflow hole is provided at the upper part of the third cavity, connecting the third cavity and the backpack's inner cavity. The height of the overflow hole is the overflow height of the overflow backpack 28.

[0103] The overflow device in this invention is not limited to the three forms mentioned above. As long as it can achieve overflow in the tidal zone and prevent organisms in the tidal zone from flowing into the filter tank 16, it falls within the scope of protection of this invention.

[0104] In a specific embodiment of the present invention, a third regulating valve 11 is provided on the exhaust pipe 5. The third regulating valve 11 is used to regulate the exhaust speed, thereby controlling the dehumidification speed. To reduce intake and exhaust noise, in this specific embodiment of the present invention, the exhaust end of the exhaust pipe 5 is connected to a first muffler, which is in communication with the outside air. The air discharged from the exhaust pipe 5 is discharged into the atmosphere after being silenced by the first muffler. The intake end of the intake pipe 4 is connected to a second muffler, which is in communication with the outside air. The outside air is first silenced by the second muffler before entering the intake pipe 4.

[0105] Please refer to the attached document. Figure 1 -Appendix Figure 5 For the smaller master cylinder 1, only one muffler needs to be installed; that is, the first muffler and the second muffler are the same muffler. The exhaust end of the exhaust pipe 5 and the intake end of the intake pipe 4 are both connected to the same muffler. During intake, outside air first passes through the muffler for silencing before entering the intake pipe 4. During exhaust, the air discharged from the exhaust pipe 5 first passes through the muffler for silencing before entering the outside atmosphere.

[0106] Please refer to the attached document. Figure 6 For the main cylinder 1, which has a larger volume, two mufflers can be installed, namely, the first muffler and the second muffler are two different mufflers. The exhaust pipe 5 is connected to the first muffler, and the intake pipe 4 is connected to the second muffler.

[0107] As described above, during high tide, the first solenoid valve 8 is opened, allowing outside air to enter the air chamber 6. After a first preset time, the first solenoid valve 8 closes, and no more air enters the air chamber 6. However, because the suction force at the intake end of the first Venturi jet 3 remains, during subsequent high tide, high tide, low tide, and ebb tide processes, the first Venturi jet 3 will draw in a small amount of air through the valve core gap of the first solenoid valve 8 and the gap between the first solenoid valve 8 and the air intake pipe 4. This will form a small number of microbubbles in the main cylinder 1, affecting the aesthetics of the tidal tank. To solve this problem, in a specific embodiment of the present invention, a bypass pipe 12 is provided on the air intake pipe 4. One end of the bypass pipe 12 is connected to the air intake pipe 4, and the other end is submerged below the water surface of the tidal zone, that is, the other end is below the low tide level of the tidal zone. A fourth regulating valve is provided on the bypass pipe 12, which opens to a small extent. After the first solenoid valve 8 is closed, a negative pressure is generated at the suction end of the first Venturi jet 3. This negative pressure will draw water from the tidal zone into the first Venturi jet 3 through the bypass pipe 12, thereby significantly reducing the amount of air drawn in and effectively preventing the generation of microbubbles.

[0108] Additionally, the air intake volume of the air intake pipe 4 can be adjusted via the fourth regulating valve on the bypass pipe 12, thereby controlling the rate of tidal rise in the tidal zone. Specifically, if the opening of the fourth regulating valve is increased, the air intake volume of the air intake pipe 4 will decrease, and the rate of tidal rise will slow down. If the opening of the fourth regulating valve is decreased, the air intake volume of the air intake pipe 4 will increase, and the rate of tidal rise will speed up.

[0109] As described above, the intake pipe 4 is equipped with a first solenoid valve 8, the exhaust pipe 5 with a second solenoid valve 9, and the first branch pipe 18 with a third solenoid valve 23. The first solenoid valve 8, the second solenoid valve 9, and the third solenoid valve 23 can all preferably be electric ball valves. Electric ball valves have advantages such as excellent sealing performance and large flow capacity.

[0110] In a specific embodiment of this invention, the first solenoid valve 8 is a normally closed type, specifically a normally closed valve with a time-delay closing mechanism. A time-delay closing switch module is connected to a standard normally closed solenoid valve, or a timer switch with the same function is connected to form a normally closed valve with a time-delay closing mechanism. The second solenoid valve 9 and the third solenoid valve 23 are both normally open valves. The tidal cylinder in this invention also includes a timer switch, and the energization and de-energization of the first solenoid valve 8, the second solenoid valve 9, and the third solenoid valve 23 are all controlled by the timer switch. When the timer switch is closed, the first solenoid valve 8, the second solenoid valve 9, and the third solenoid valve 23 are energized; the first solenoid valve 8 opens, and the second solenoid valve 9 and the third solenoid valve 23 close. The first solenoid valve 8 automatically closes after a first preset time. When the timer switch is open, the first solenoid valve 8, the second solenoid valve 9, and the third solenoid valve 23 are de-energized; the first solenoid valve 8 closes, and the second solenoid valve 9 and the third solenoid valve 23 open. The process of the timer switch controlling the tide is as follows:

[0111] High tide begins: Please refer to the attached document. Figure 1 When the timer switch closes, the first solenoid valve 8 is energized and opens, while the second solenoid valve 9 and the third solenoid valve 23 are energized and close. The exhaust pipe 5 does not exhaust to the outside; only the intake pipe 4 draws in air from the outside. The air drawn in through the intake pipe 4 passes through the first Venturi jet 3 and enters the air chamber 6. The air rises within the air chamber 6, forcing the water in the chamber into the tidal zone, causing the tidal zone to rise.

[0112] The tide continues to rise: Please refer to the attached document. Figure 2 The first solenoid valve 8 automatically closes after a first preset time, which in this specific embodiment is 10 minutes. At this time, the second solenoid valve 9 and the third solenoid valve 23 remain closed. The air inlet pipe 4 stops intake, and the exhaust pipe 5 continues to exhaust. The drain pipe remains at a low flow rate. At this time, the water flow rate from the first water pump 2 is greater than the water flow rate from the drain pipe, the tidal zone continues to rise, and the water level in the filter tank 16 continues to decrease.

[0113] Reaching climax: Please refer to the attached document. Figure 3As the water level difference between the tidal zone and the filter tank 16 gradually increases, the head of the first water pump 2 gradually increases, thus the upward flow velocity gradually decreases. Simultaneously, due to the continuous rise in the water level of the tidal zone, the overflow pressure gradually increases, thus the downward flow velocity gradually increases. When the upward and downward flow velocities of the tidal zone reach equilibrium, the tidal zone is at its high tide level.

[0114] The tide is starting to recede: Please refer to the attached document. Figure 4 After the second preset time, the timer switch is turned off, and the first solenoid valve 8, the second solenoid valve 9, and the third solenoid valve 23 are all de-energized. The first solenoid valve 8 remains closed, and the air intake pipe 4 remains closed. The second solenoid valve 9 and the third solenoid valve 23 change from the closed state to the open state. The exhaust pipe 5 is opened, and exhaust begins. The air above the air chamber 6 is discharged through the exhaust pipe 5. Water from the tidal zone continuously enters the air chamber 6. At this time, the drain pipe is at a high flow rate, and the flow rate of the water in the tidal zone is greater than that of the water coming in, causing the tidal zone to recede.

[0115] Low tide level reached: Please refer to the attached document. Figure 5 As the water level in the tidal zone decreases, the overflow pressure decreases, and the downstream flow rate gradually decreases. Simultaneously, as the water level in filter cylinder 16 rises, the float rises, and the opening of float valve 26 gradually decreases, also leading to a decrease in downstream flow rate. On the other hand, as the water level in filter cylinder 16 rises, the water level difference between the tidal zone and filter cylinder 16 gradually decreases, the head of the first water pump 2 gradually decreases, and the upstream flow rate gradually increases. When the upstream and downstream flow rates in the tidal zone reach equilibrium, the tidal zone is at low tide.

[0116] If the water in the tide tank contains salt, white salt stains will remain on the inner wall of the main tank 1 after the water evaporates at low tide, affecting the aesthetic appeal of the tide tank. To solve this problem, a stain removal device is provided in this specific embodiment of the invention. Please refer to the appendix. Figure 9 The stain removal device includes a nozzle, which faces the inner wall of the main cylinder 1. The nozzle is connected to the stain removal water source through a connecting pipe.

[0117] The preferred source of water for descaling is fresh water. The water source can be a tap water pipe equipped with a water purification device. One end of the connecting pipe is connected to the nozzle, and the other end is connected to the tap water pipe. A fourth solenoid valve is installed on the connecting pipe to control the opening or closing of the connecting pipe.

[0118] The descaling water source can also come from a water storage container, meaning the container contains descaling water. A third water pump is installed inside the storage container; one end of the connecting pipe is connected to a nozzle, and the other end is connected to the outlet of the third water pump. When the third water pump starts, the nozzle begins spraying water onto the inner wall of the main cylinder 1. When the third water pump stops, the spraying stops.

[0119] The descaling device can not only remove salt stains from the inner wall of the main cylinder 1, but also replenish the water evaporated in the main cylinder 1.

[0120] Please refer to the attached document. Figure 9 Specifically, the nozzle can be a fan-shaped nozzle 29, and there are multiple fan-shaped nozzles 29 distributed along the cylinder orifice of the main cylinder 1. Please refer to the appendix. Figure 10 The nozzle can also be a wide-angle nozzle 30, which is located in the center of the cylinder opening of the main cylinder 1. There can be one wide-angle nozzle 30 or multiple nozzles arranged at intervals. This article does not make specific restrictions on the type or number of nozzles. As long as the nozzle can spray to the upper edge of all the inner walls of the main cylinder 1 and does not splash outside the main cylinder 1, it falls within the protection scope of this article.

[0121] The spray nozzle should be started after the tide level reaches low in the tidal zone, and the spraying time should be sufficient to dissolve the salt residue completely.

[0122] To facilitate the growth of intertidal organisms, rocks, sand, and other landscaping elements can be placed on the outer top wall of air chamber 6 to create an environment resembling a tidal beach. When the tide recedes, the beach is exposed above the water, and the sand on the surface gradually dries. During high tide, the sand on the surface floats to the surface. To collect the floating sand back onto the beach, a specific embodiment of this invention includes a sand removal device.

[0123] Please refer to the attached document. Figure 11 The sand removal device includes: a second water pump 36, a second Venturi jet injector 35, a vertical pipe 34, and a float. The second water pump 36 can be located in the main cylinder 1 or the filter cylinder 16. The second water pump 36 is connected to the inlet end of the second Venturi jet injector 35 located in the main cylinder 1, and the suction end of the second Venturi jet injector 35 is connected to the lower end of the vertical pipe 34. The nozzle of the second Venturi jet injector 35 faces the sand. The float includes a float head 32 and a float tube 33 connected to each other. The float tube 33 is inserted into the vertical pipe 34 from above and can slide up and down within the vertical pipe 34. The float head 32 floats on the water surface of the tidal zone. When the tide recedes, the float head 32 moves downward and the float tube 33 moves downward within the vertical pipe 34. When the tide rises, the float head 32 moves upward and the float tube 33 moves upward within the vertical pipe 34. The float head 32 is provided with multiple water passage holes. One end of the water passage hole is located on the surface of the float head 32, and the other end is connected to the float tube 33.

[0124] When the tidal zone is at high tide, the second water pump 36 starts, and the water flows through the second Venturi jet 35 to the beach. The suction end of the second Venturi jet 35 generates suction, and the sand on the water surface is sucked into the water passage of the float 32 along with the water flow. Then it passes through the float pipe 33, the vertical pipe 34, and the nozzle of the second Venturi jet 35 in sequence, and finally returns to the beach.

[0125] In a specific embodiment of the invention, a second deluge pipe 31 is added, which is arranged horizontally. The inlet end of the second deluge pipe 31 is connected to the nozzle of the second venturi jet 35. Multiple second nozzles are arranged along the length of the second deluge pipe 31, and these nozzles face horizontally or slightly downwards, rather than directly towards the beach. This prevents the water ejected from the second nozzles from directly impacting the beach, thus avoiding stirring up the sand. The water flow ejected from the nozzle of the second venturi jet 35 is first evenly distributed within the second deluge pipe 31, thereby absorbing some of the impact force and ensuring that the water flow ejected from the second nozzles is slowed down.

[0126] The sand removal device in the specific embodiment of the present invention can not only realize the recovery of sand, but also promote the flow of water in the tidal zone when the tidal zone is at high tide, thereby benefiting the growth of organisms.

[0127] In the description of this application, it should be noted that the terms "upper," "lower," "top," "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this application. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0128] Unless otherwise expressly 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 can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0129] 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 (1) and a filter tank (16), wherein the main tank (1) is connected to the filter tank (16) via a drain pipe, and the filter tank (16) is connected to the main tank (1) via a water inlet pipe (15), characterized in that, Also includes: Air chamber (6), the air chamber (6) is located inside the main cylinder (1), the area inside the main cylinder (1) located outside the air chamber (6) is the tidal zone, the bottom of the air chamber (6) is provided with a channel, and the air chamber (6) is connected to the tidal zone through the channel; An air intake device that supplies gas to the air chamber (6); An exhaust device is provided at the top of the air chamber (6), and the exhaust port is connected to the outside through the exhaust device; The outer top wall of the air chamber (6) is provided with a sand beach (37), and the tidal tank also includes a sand removal device, which includes: Second water pump (36); The second Venturi jet (35) is connected to the inlet of the second Venturi jet (35); A vertical tube (34) is connected at its lower end to the suction end of a second Venturi jet (35), the nozzle of which faces the beach (37). The float includes a float head (32) and a float tube (33) connected to each other. The float tube (33) is slidably fitted into the vertical tube (34). The float head (32) floats on the water surface of the tidal zone. The float head (32) is provided with a plurality of water passage holes. One end of the water passage hole is located on the surface of the float head (32), and the other end is connected to the float tube (33).

2. The tidal tank according to claim 1, characterized in that, The air intake device includes: The first water pump (2) is installed inside the filter cylinder (16); The first Venturi jet (3) is installed in the main cylinder (1), and the first water pump (2) is connected to the inlet end of the first Venturi jet (3) through the water supply pipe (15). The intake pipe (4) has one end connected to the outside and the other end connected to the suction end of the first Venturi jet (3). The nozzle of the first Venturi jet (3) is connected to the air chamber (6).

3. The tidal tank according to claim 2, characterized in that, The intake pipe (4) is provided with a first solenoid valve (8); the exhaust device includes an exhaust pipe (5), one end of the exhaust pipe (5) is connected to the exhaust port, and the other end is connected to the outside. The exhaust pipe (5) is provided with a second solenoid valve (9).

4. The tidal tank according to claim 1, characterized in that, The air chamber (6) is located near a corner of the main cylinder (1). The air chamber (6) is surrounded by an air chamber top plate, an air chamber side plate, and two side plates of the main cylinder (1) forming the corner. The air chamber side plate and the bottom plate of the main cylinder (1) form the channel.

5. The tidal tank according to claim 2, characterized in that, The bottom of the air chamber (6) is provided with a first rain pipe (7), the nozzle of the first Venturi jet (3) is connected to the inlet of the first rain pipe (7), and a plurality of first spray holes are provided along the length of the first rain pipe (7).

6. The tidal tank according to claim 3, characterized in that, An overflow device is installed in the tidal zone, and the overflow height of the overflow device is lower than the water surface height at low tide in the tidal zone. The outlet of the overflow device is connected to the filter cylinder (16) through the drain pipe. A regulating valve group is provided on the drain pipe. When the tide is rising or at high tide in the tidal zone, the regulating valve group is at a low flow rate. When the tide is receding or at low tide in the tidal zone, the regulating valve group is at a high flow rate.

7. The tidal tank according to claim 6, characterized in that, The drain pipe includes a main outlet pipe (22) and a first branch pipe (18) and a second branch pipe (19) connected in parallel. The inlet end of the first branch pipe (18) and the inlet end of the second branch pipe (19) are both connected to the outlet end of the overflow device. The outlet end of the first branch pipe (18) and the outlet end of the second branch pipe (19) are both connected to the inlet end of the main outlet pipe (22). The outlet end of the main outlet pipe (22) is connected to the filter cylinder (16). A third solenoid valve (23) is provided on the first branch pipe (18), and a first regulating valve (24) is provided on the second branch pipe (19). When the tide is rising or at high tide in the tidal zone, the third solenoid valve (23) is in the closed state; when the tide is receding or at low tide in the tidal zone, the third solenoid valve (23) is in the open state.

8. The tidal tank according to claim 7, characterized in that, The drain pipe also includes a main inlet pipe. The inlet end of the first branch pipe (18) and the inlet end of the second branch pipe (19) are both connected to the outlet end of the main inlet pipe. The main inlet pipe includes a vertical inlet pipe (14) and a horizontal inlet pipe (17). The outlet end of the overflow device is connected to the vertical inlet pipe (14), the outlet end of the vertical inlet pipe (14) is connected to the inlet end of the horizontal inlet pipe (17), and a float valve (26) is provided at the intersection of the vertical inlet pipe (14) and the horizontal inlet pipe (17), with the float of the float valve (26) located inside the filter cylinder (16).

9. The tidal tank according to claim 8, characterized in that, The filter cylinder (16) is provided with multiple functional compartments (20), and the multiple functional compartments (20) are connected in sequence through overflow plates; A filter device (21) is provided above the functional compartment (20) at the first end. The outlet end of the main water pipe (22) is connected to the inlet end of the filter device (21). The outlet end of the filter device (21) is connected to the functional compartment (20) at the first end. The first water pump (2) is located in the functional compartment (20) at the end.

10. The tidal tank according to claim 6, characterized in that, The overflow device is a right-angle overflow device (27), which includes an outer corner plate and an inner corner plate. The upper and lower parts of the outer corner plate are respectively provided with first comb holes. A first clamping cavity is formed between the outer corner plate and the inner corner plate. The first comb holes communicate with the first clamping cavity. The top edge of the inner corner plate is the first overflow edge, and the inner corner plate and a corner of the main cylinder (1) form an overflow area, and the first overflow edge communicates with the overflow area; The top of the outer corner plate is sealed with a first top cover, and the bottom of the overflow area is connected to the drain pipe.

11. The tidal tank according to claim 6, characterized in that, The overflow device is a double overflow pipe (13), which includes an outer pipe and a core pipe. The lower and upper parts of the outer pipe are respectively provided with second comb holes. A second clamping cavity is formed between the outer pipe and the core pipe. The second comb holes are connected to the second clamping cavity. The top edge of the core pipe is the second overflow edge. The second overflow edge is connected to the inner cavity of the core pipe. The core pipe is connected to the drain pipe. The top of the outer pipe is sealed with a second top cover.

12. The tidal tank according to claim 6, characterized in that, The overflow device is an overflow backpack (28), which includes a backpack disposed on the outside of the main cylinder (1). The side plate of the main cylinder (1) on which the backpack is disposed is a backpack side plate. The top of the backpack is closed with a third top cover, and the bottom of the backpack is connected to the drain pipe. The overflow backpack (28) also includes a perforated plate, which is disposed in the tidal zone and arranged close to the side panel of the backpack. One side of the third top cover extends into the tidal zone and is connected to the top of the perforated plate. The upper and lower parts of the perforated plate are respectively provided with third perforations. A third cavity is formed between the perforated plate and the side panel of the backpack. The third perforations are connected to the third cavity. An overflow hole connecting the third cavity and the backpack is provided at the upper part of the third cavity.

13. The tidal tank according to claim 3, characterized in that, The exhaust end of the exhaust pipe (5) is connected to the outside air through the first muffler, and the intake end of the intake pipe (4) is connected to the outside air through the second muffler. The first muffler and the second muffler are two different mufflers (10), or the first muffler and the second muffler are the same muffler (10).

14. The tidal tank according to claim 2, characterized in that, The air inlet pipe (4) is also provided with a bypass pipe (12), the water outlet of the bypass pipe (12) is connected to the air inlet pipe (4), the water inlet of the bypass pipe (12) is located below the water surface at the low tide level of the tidal zone, and a fourth regulating valve is provided on the bypass pipe (12).

15. The tidal tank according to claim 7, characterized in that, The first solenoid valve (8) is a normally closed valve, and the first solenoid valve (8) is a normally closed valve with a time delay after energization; the second solenoid valve (9) and the third solenoid valve (23) are both normally open valves; the energization and de-energization of the first solenoid valve (8), the second solenoid valve (9) and the third solenoid valve (23) are all controlled by a timer switch. When the timer switch is closed, the first solenoid valve (8) opens, the second solenoid valve (9) and the third solenoid valve (23) close, the tide rises in the tidal zone, the first solenoid valve (8) closes after a first preset time, and the tide continues to rise in the tidal zone until the high tide level; When the timer switch is turned off, the first solenoid valve (8) closes, the second solenoid valve (9) and the third solenoid valve (23) open, and the tide recedes until the low tide level.

16. The tidal tank according to claim 1, characterized in that, The tidal tank also includes a stain removal device, which includes a nozzle facing the inner wall of the main tank (1). The nozzle is connected to a stain removal water source through a connecting pipe.

17. The tidal tank according to claim 16, characterized in that, The descaling water source comes from a tap water pipe, and the connecting pipe connects the nozzle to the tap water pipe. A fourth solenoid valve is installed on the connecting pipe to control the opening or closing of the connecting pipe. Alternatively, the descaling water source may be a water storage container, which may contain a third water pump. One end of the connecting pipe may be connected to the nozzle, and the other end may be connected to the outlet of the third water pump.

18. The tidal tank according to claim 16, characterized in that, The nozzle is a fan-shaped nozzle (29), and the fan-shaped nozzle (29) consists of multiple nozzles arranged along the cylinder port of the main cylinder (1).

19. The tidal tank according to claim 1, characterized in that, The sand removal device also includes a second rain pipe (31), which is horizontally arranged above the beach. The water inlet of the second rain pipe (31) is connected to the nozzle of the second Venturi jet (35). Multiple second nozzles are arranged along the length of the second rain pipe (31), and the second nozzles face horizontally or obliquely downward.

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