Automatic tide tank system based on siphon principle

Abstract

The invention discloses an automatic tide tank system based on a siphon principle, which relates to the field of ecological simulation and comprises a main tank, a backpack, a low sewer pipe, a siphon device, a negative pressure ingress pipe, a high sewer pipe, a high sewer pipe ball valve and a low sewer pipe ball valve, the knapsack is fixedly connected to the rear portion of the main cylinder and communicated with the interior of the main cylinder, and the low sewer pipe and the high sewer pipe are both vertically placed in the knapsack. The siphon device further comprises a barrel-shaped cavity and a connecting hole, the connecting hole is formed in the bottom of the barrel-shaped cavity, and the barrel-shaped cavity is arranged at the inlet end of the high sewer pipe in a sleeving mode and used for forming a sealable air chamber at the inlet of the high sewer pipe. And the siphon device is fixed at the inlet end of the high sewer pipe through a connecting hole at the bottom. The applicability and customizability of the system are enhanced, and the whole system is simple in structure and high in stability, can efficiently simulate an intertidal zone of a natural sea area and create a tidal hydrological environment, and meanwhile has a good water purification function.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of ecological simulation, in particular to an automatic tide tank system based on siphon principle. BACKGROUND

[0002] In the field of ecological simulation, the tide tank system can effectively create the intertidal zone environment by simulating the rise and fall of natural sea tides, meet the indoor living needs of intertidal zone organisms, and promote the health of plants and animals by improving the filtration efficiency. The existing technology mostly adopts electronic control scheme, for example, through liquid level sensor, timer and electric valve to regulate water level. Although this method realizes automation, the system composition is relatively complex, the cost is high, and the stability of long-term operation depends on the reliability of circuit and components, which has the risk of functional failure caused by electrical failure due to long-term exposure to high-salt seawater environment.

[0003] The core of electronic control technology is to actively control the water flow through external signals, which is essentially the source of its complexity and potential unreliability. A more potential improvement direction is to turn to passive control mechanism, that is, to use internal physical principles such as fluid mechanics to design a mechanical structure that can automatically trigger and terminate large-flow drainage at a certain water level while the main water pump continues to run. The basis of system stability is transferred from the vulnerable electronic components to the constant physical law, so as to build a more concise and reliable system. SUMMARY

[0004] In view of the above existing problems, the present application is proposed.

[0005] Therefore, the present application provides an automatic tide tank system based on siphon principle to solve the problems of system complexity, high cost and reliability of circuit caused by dependence on external active control of existing electronic control technology.

[0006] To solve the above technical problems, the present application provides the following technical scheme: The present application provides an automatic tide tank system based on siphon principle, which comprises a main tank, a backpack, a low drain pipe, a siphon device, a negative pressure introduction pipe, a high drain pipe, a high drain pipe ball valve and a low drain pipe ball valve. The backpack is fixedly connected to the rear of the main tank and communicates with the inside of the main tank, and the low drain pipe and the high drain pipe are vertically placed in the backpack; The siphon device further comprises a cylindrical cavity and a connecting hole, and the cylindrical cavity is provided with a connecting hole at the bottom and is sleeved on the inlet end of the high drain pipe, so as to form an enclosed air chamber at the inlet of the high drain pipe; The siphon device is fixed at the inlet end of the high sewer through the connecting hole at the bottom, one end of the negative pressure guide pipe is inserted into the hole at the top or side of the cavity of the siphon device in a sealed manner, and the other end extends into the backpack, a high sewer ball valve is arranged on the high sewer pipeline, and a low sewer ball valve is arranged on the low sewer pipeline As a preferred scheme of the automatic tide tank system based on the siphon principle, the automatic tide tank system further comprises a filter tank, a water pump, a water inlet pipe ball valve and a water inlet pipe. The filter tank is used for receiving and processing water from the main tank, the water pump is arranged in the filter tank, one end of the water inlet pipe is connected to the water outlet of the water pump, and the other end of the water inlet pipe leads to the main tank, so that filtered water is pumped back to the main tank, and the water inlet pipe ball valve is installed on the water inlet pipe and used for adjusting the water flow entering the main tank.

[0007] As a preferred scheme of the automatic tide tank system based on the siphon principle, the automatic tide tank system further comprises a filter tank, a water pump, a water inlet pipe ball valve and a water inlet pipe.

[0008] As a preferred scheme of the automatic tide tank system based on the siphon principle, the automatic tide tank system further comprises a filter tank, a water pump, a water inlet pipe ball valve and a water inlet pipe.

[0009] As a preferred scheme of the automatic tide tank system based on the siphon principle, the automatic tide tank system further comprises a filter tank, a water pump, a water inlet pipe ball valve and a water inlet pipe.

[0010] As a preferred scheme of the automatic tide tank system based on the siphon principle, the automatic tide tank system further comprises a filter tank, a water pump, a water inlet pipe ball valve and a water inlet pipe.

[0011] As a preferred scheme of the automatic tide tank system based on the siphon principle, the automatic tide tank system further comprises a filter tank, a water pump, a water inlet pipe ball valve and a water inlet pipe.

[0012] As a preferred embodiment of the automatic tidal tank system based on the siphon principle described in this invention, the height of the pipe opening extending to one end inside the backpack is adjustable, used to set the low water level line of the main tank when the siphon is broken, and the low water level line is higher than the inlet height of the lower water pipe.

[0013] As a preferred embodiment of the automatic tidal cylinder system based on the siphon principle described in this invention, the water flow rate into the main cylinder is controlled by adjusting the ball valve of the inlet pipe, and the tidal cycle is controlled by changing the time required for the water level to rise from the low water level line to the high water level line.

[0014] As a preferred embodiment of the automatic tidal tank system based on the siphon principle described in this invention, wherein: when the water level rises to the inlet of the high-water pipe to trigger overflow, the negative pressure inlet pipe guides water into the siphon device in an underwater state to promote the complete formation of the siphon; As the water level drops under the siphon effect, the negative pressure inlet pipe continues to maintain the siphon until the negative pressure inlet pipe emerges above the water surface to draw in air, at which point the siphon is broken and the cycle restarts.

[0015] The beneficial effects of this invention are as follows: By setting a siphon device at the inlet of the high-level drainage pipe and connecting it to a negative pressure inlet pipe, the siphon is automatically formed by water level changes, realizing a reliable drive for tidal circulation and improving the long-term stability of the system. By designing the negative pressure inlet pipe opening to be height adjustable and cooperating with the fixed-height drainage pipe inlet, the amplitude and period of the tide can be adjusted independently and flexibly, thereby accurately adapting to the differentiated needs of different aquatic organisms, enhancing the applicability and customizability of the system. The entire system has a simple structure, can efficiently simulate the natural tidal environment, and promote water exchange and ecological health. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of an automatic tidal cylinder system based on the siphon principle.

[0018] Figure 2 This is a schematic diagram of the main body of the siphon maintenance device.

[0019] Figure 3 This is a 3D view of an automatic tidal tank based on the siphon principle.

[0020] 1. Main cylinder, 2. Backpack, 3. Lower water pipe, 4. Siphon device, 5. Negative pressure inlet pipe, 6. Higher water pipe, 7. Higher water pipe ball valve, 8. Lower water pipe ball valve, 9. Filter cylinder, 10. Water pump, 11. Inlet water pipe ball valve, 12. Inlet water pipe. Detailed Implementation

[0021] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0023] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0024] Reference Figure 1 and Figure 3 This is one embodiment of the present invention, which provides an automatic tidal tank system based on the siphon principle, comprising the following steps: Includes filter cylinder 9, water pump 10, inlet pipe ball valve 11 and inlet pipe 12; The filter cylinder 9 is used to receive and process water from the main cylinder 1. The water pump 10 is placed in the filter cylinder 9. One end of the water inlet pipe 12 is connected to the outlet of the water pump 10, and the other end is connected to the main cylinder 1 to return the filtered water pump 10 to the main cylinder 1. The water inlet pipe ball valve 11 is installed on the water inlet pipe 12 to regulate the water flow rate into the main cylinder 1.

[0025] Furthermore, filter tank 9 is used to receive and treat water from main tank 1. Filter tank 9 is typically filled with physical filter cotton and biological filter media. The physical filter cotton is responsible for intercepting solid particulate impurities in the water, while the biological filter media provides an attachment surface for beneficial microorganisms such as nitrifying bacteria to perform biological purification. Water pump 10 is placed inside filter tank 9. The power cord of water pump 10 is connected to external AC power. The suction port of water pump 10 is located inside filter tank 9 and is equipped with a protective mesh to prevent the intake of large particles or organisms. The outlet of water pump 10 is connected to one end of inlet pipe 12 via a pipe connector. The other end leads to the main cylinder 1, usually entering the main cylinder 1 through an opening at the edge or bottom. A water flow dispersion device may be installed at the outlet to reduce the impact on the aquascape or organisms inside the main cylinder 1. The inlet ball valve 11 is installed on the inlet pipe 12. The inlet ball valve 11 is a manual stop valve or ball valve. By rotating the handle of the inlet ball valve 11, the cross-sectional area of ​​the internal channel of the inlet pipe 12 is changed, thereby precisely controlling the water flow from the water pump 10 and into the main cylinder 1 through the inlet pipe 12. Adjusting the opening of the inlet ball valve 11 is a key operation to control the entire tidal cycle.

[0026] Backpack 2 is connected to the filter tank 9 below through the internal lower water pipe 3 and upper water pipe 6. The outlet of the lower water pipe 3 and the outlet of the upper water pipe 6 both lead to the filter tank 9, so that the water discharged from the main tank 1 is introduced into the filter tank 9 for filtration. Furthermore, backpack 2 is fixed to the rear of main cylinder 1 and communicates with the interior of main cylinder 1. A low-level water pipe 3 and a high-level water pipe 6 are vertically placed inside backpack 2. The upper openings of the low-level water pipe 3 and the high-level water pipe 6 are located inside backpack 2 and are set at different heights. The lower ends of the low-level water pipe 3 and the high-level water pipe 6 serve as water outlets, extending through the bottom plate or side wall of backpack 2 to the outside of backpack 2. Filter cylinder 9 is located below backpack 2. The top of filter cylinder 9 is open or has an opening. The low-level water pipe 3 and the high-level water pipe 6 extend from backpack 2... The lower outlet of the high-low water pipe 6 extends downward and enters the filter tank 9, allowing water flowing from the low-low water pipe 3 and the high-low water pipe 6 to be directly discharged into the filter tank 9. Water in the main tank 1 is collected by the backpack 2 and flows into the filter tank 9 below through the low-low water pipe 3 or the high-low water pipe 6, or both, under the action of gravity. The filter media contained inside the filter tank 9 performs physical and biological purification on the incoming water, completing the process of introducing the water discharged from the main tank 1 into the filter tank 9 for filtration.

[0027] The negative pressure inlet pipe 5 is a flexible pipe with an inner diameter of 2-4mm. When the water level in the backpack 2 submerges its opening, water is introduced into the cylindrical cavity 4a to maintain the siphon effect in the high-low water pipe 6. When the water level drops to the point where the flexible pipe opening is exposed to air, air is introduced into the cylindrical cavity 4a to break the siphon effect in the high-low water pipe 6.

[0028] Furthermore, the negative pressure inlet tube 5 uses a small-diameter silicone tube or a similar flexible material. One end of the negative pressure inlet tube 5 is sealed and inserted into an opening in the top or side wall of the cylindrical cavity of the siphon device 4. The other end of the negative pressure inlet tube 5 extends into the backpack 2 with its opening facing downwards or to the side. When the water level in the backpack 2 rises and completely submerges the opening of the negative pressure inlet tube 5, the water in the backpack 2 is drawn in and continuously flows into the cylindrical cavity through the negative pressure inlet tube 5 due to the negative pressure generated inside the siphon device 4. This water flow effectively prevents air from entering and helps maintain the siphon effect inside the high-low water pipe 6. When the water level in the backpack 2 drops, causing the opening of the negative pressure inlet tube 5 to be exposed to the air, the outside air is immediately drawn into the cylindrical cavity through the negative pressure inlet tube 5 under atmospheric pressure. The entry of air quickly destroys the vacuum conditions required to maintain the siphon, thereby terminating the siphon effect inside the high-low water pipe 6.

[0029] The diameter of the high-level drainage pipe 6 is larger than that of the low-level drainage pipe 3, which is used to provide a drainage flow rate much greater than that of the low-level drainage pipe 3 after the siphon effect is formed.

[0030] Furthermore, the diameter of the high-level water pipe 6 is larger than that of the low-level water pipe 3. After the siphon effect is fully formed, the high-level water pipe 6, relying on its larger cross-sectional area and the powerful drainage force provided by the siphon effect, can discharge the water in the backpack 2 at an extremely high rate. The drainage flow rate of the high-level water pipe 6 at this stage far exceeds the drainage flow rate of the low-level water pipe 3 under natural gravity. The sum of the flow rates of the high-level water pipe 6 and the low-level water pipe 3 is significantly greater than the inlet flow rate of the water pump 10. The huge flow difference causes the water level in the main cylinder 1 to drop rapidly, thereby achieving an efficient tide receding process.

[0031] The inlet height of the high-low water pipe 6 is fixed and is used to set the high tide level line that triggers the siphon effect in the main cylinder 1. The inlet height of the low-low water pipe 3 is fixed and is used to maintain the basic water level line in the main cylinder 1 under non-siphon conditions.

[0032] Furthermore, the high-level drain pipe 6 is fixed vertically inside the backpack 2. The upper opening of the high-level drain pipe 6, i.e., the inlet, is set at a fixed height. When the water level in the main tank 1 rises and reaches the same level as the inlet of the high-level drain pipe 6, water begins to flow into the inlet of the high-level drain pipe 6. This water level is the high tide line required to trigger the siphon effect. The low-level drain pipe 3 is also fixed vertically inside the backpack 2. The upper opening of the low-level drain pipe 3, i.e., the inlet, is set at a fixed height lower than the inlet of the high-level drain pipe 6. In the non-siphon state where the siphon effect has not been triggered or has been broken, the water inflow of the pump 10 and the natural gravity drainage flow of the low-level drain pipe 3 reach a dynamic balance near the inlet height of the low-level drain pipe 3. This stable water level constitutes the basic water level line in the main tank 1.

[0033] During the high tide and low tide phases, the inlet flow rate of pump 10 is greater than the drainage flow rate when only the lower drain pipe 3 is operating during the high tide phase; during the low tide phase, the sum of the siphon drainage flow rate of the upper drain pipe 6 and the drainage flow rate of the lower drain pipe 3 is greater than the inlet flow rate of pump 10.

[0034] Furthermore, during the high tide phase, pump 10 operates continuously. The inlet flow rate of pump 10 is set by adjusting the inlet pipe ball valve 11 to be greater than the drainage flow rate generated by gravity when the lower drain pipe 3 operates alone. This small positive flow difference causes the water level in the main cylinder 1 to rise slowly and continuously from its low point. When the water level rises to the inlet height of the upper drain pipe 6, a siphon effect is triggered, and the working phase transitions to the low tide phase. During the low tide phase, the upper drain pipe 6 generates a huge drainage flow rate under the complete siphon effect. The sum of the siphon drainage flow rate of the upper drain pipe 6 and the continuous drainage flow rate of the lower drain pipe 3 is much greater than the inlet flow rate of pump 10. This huge negative flow difference causes the water level in the main cylinder 1 to drop rapidly from its high point until the water level drops to the inlet height of the negative pressure inlet pipe 5, breaking the siphon. The working phase then returns to the high tide phase, thus completing an automatic cycle.

[0035] Siphon formation: Successful siphon activation = overflow triggering + continuous negative pressure supply + rapid air evacuation ; Q: Inlet water flow rate - flow rate of lower drain pipe 3; A: Cross-sectional area of ​​upper drain pipe 6; V: Water flow velocity (m / s); g: Acceleration due to gravity (9.8 m / s²) 2 Δh: The vertical height difference between the inlet of the high-level water pipe 6 and the inlet of the siphon device 4.

[0036] Low tide: High drain pipe flow rate 6 + Low drain pipe flow rate 3 > Inflow rate.

[0037] The height adjustment of the negative pressure inlet pipe 5 controls the water level height when the siphon is disrupted, so that the low water level of the main cylinder 1 is not completely restricted by the lower water pipe 3.

[0038] The height of the opening of the negative pressure inlet pipe 5 extending into one end of the backpack 2 is adjustable. It is used to set the low water level line of the main cylinder 1 when the siphon is broken, and the low water level line is higher than the inlet height of the lower water pipe 3.

[0039] Furthermore, The flow rate of water entering the main cylinder 1 is controlled by adjusting the ball valve 11 of the inlet pipe, and the cycle of the tidal circulation is controlled by changing the time required for the water level to rise from the low water level line to the high water level line.

[0040] Furthermore, the operator changes the opening degree of the internal channel of the inlet ball valve 11 by rotating the handle of the inlet ball valve 11. The change in the opening degree of the inlet ball valve 11 directly regulates the water flow rate from the water pump 10 and into the main cylinder 1 through the inlet pipe 12. When it is necessary to extend the tidal cycle, the inlet ball valve 11 is rotated to the closed direction to reduce the opening degree, thereby reducing the water flow rate into the main cylinder 1. The reduced water flow rate causes the time required for the water level to rise from the low water level line set at the inlet of the negative pressure inlet pipe 5 to the high water level line set at the inlet of the high drain pipe 6 to increase, thus extending the duration of each high tide phase and the entire tidal cycle cycle. When it is necessary to shorten the tidal cycle cycle, the inlet ball valve 11 is rotated to the open direction to increase the opening degree, thereby increasing the water flow rate into the main cylinder 1. The increased water flow rate makes the water level rise from the low water level line to the high water level line faster and the time required to do so is shorter, thus reducing the duration of the high tide phase and shortening the entire tidal cycle cycle. Through the above operations, the purpose of conveniently and linearly controlling the tidal cycle period can be achieved by adjusting only a single component, the ball valve 11 of the inlet pipe.

[0041] When the water level rises to the inlet of the high-pressure drain pipe 6, triggering overflow, the negative pressure inlet pipe 5 guides the water into the siphon device 4 in an underwater state to promote the complete formation of the siphon. As the water level drops under the siphon effect, the negative pressure inlet pipe 5 continues to maintain the siphon until the negative pressure inlet pipe 5 emerges above the water surface and draws in air, at which point the siphon is broken and the cycle restarts.

[0042] Furthermore, the water pump 10 continuously supplies water to the main cylinder 1. When the water level in the main cylinder 1 rises to the height of the inlet of the high-pressure drain pipe 6, the water begins to overflow the inlet of the high-pressure drain pipe 6. The overflowing water flows downward in the high-pressure drain pipe 6 and carries away some air, forming an initial negative pressure in the cylindrical cavity of the siphon device 4. At this time, the opening of the negative pressure inlet pipe 5 is still submerged below the water surface. The negative pressure in the cylindrical cavity continuously draws water from the backpack 2 into the cylindrical cavity through the negative pressure inlet pipe 5. This process continuously discharges residual gas at the top of the high-pressure drain pipe 6, thereby accelerating and ensuring the formation of a complete siphon effect. After the siphon is fully formed, the high-pressure drain pipe 6 begins to drain water at a high flow rate. The water level in the main cylinder 1 drops rapidly under the combined action of the siphon drainage from the high-pressure drain pipe 6 and the drainage from the low-pressure drain pipe 3. During the drop, the opening of the negative pressure inlet pipe 5 remains submerged below the water surface and continuously introduces water into the cylindrical cavity to maintain the negative pressure state at the top of the high-pressure drain pipe 6 and ensure the stability of the siphon. When the water level drops to the opening of the exposed negative pressure inlet pipe 5, air is quickly drawn into the cylindrical cavity and enters the top of the high and low water pipes 6. The entry of air immediately destroys the vacuum conditions required for siphoning, causing the siphon effect to terminate. The high and low water pipes 6 stop draining. At this time, only the low water pipes 3 continue to drain while the water pump 10 continues to pump water. The water level stops dropping and begins to rise again, automatically entering the next cycle.

[0043] In summary, this invention achieves reliable tidal circulation by installing a siphon device at the inlet of the high-level sewer pipe and connecting it to a negative pressure inlet pipe. This utilizes water level changes to automatically form a siphon, improving the long-term stability of the system. By designing the negative pressure inlet pipe to be height-adjustable and cooperating with the fixed-height sewer pipe inlet, the amplitude and period of the tide can be independently and flexibly adjusted. This allows for precise adaptation to the differentiated needs of various aquatic organisms, enhancing the system's applicability and customizability. The entire system has a simple structure, can efficiently simulate the natural tidal environment, and promotes water exchange and ecological health.

[0044] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An automatic tidal tank system based on the siphon principle, characterized in that: include: Main cylinder (1), backpack (2), low water pipe (3), siphon device (4), negative pressure inlet pipe (5), high water pipe (6), high water pipe ball valve (7) and low water pipe ball valve (8). The backpack (2) is fixedly connected to the rear of the main cylinder (1) and communicates with the inside of the main cylinder (1). The low water pipe (3) and the high water pipe (6) are both placed vertically inside the backpack (2). The siphon device (4) also includes a cylindrical cavity (4a) and a connecting hole (4b). The bottom of the cylindrical cavity (4a) is provided with a connecting hole (4b) and is sleeved on the inlet end of the high-pressure water pipe (6) to form a sealable air chamber at the inlet of the high-pressure water pipe (6). The siphon device (4) is fixed to the inlet end of the high-pressure water pipe (6) through the bottom connection hole (4b). One end of the negative pressure inlet pipe (5) is inserted into the hole on the top or side of the cavity of the siphon device (4) in a sealed manner, and the other end extends into the backpack (2). The high-pressure water pipe (6) is equipped with a high-pressure water pipe ball valve (7), and the low-pressure water pipe (3) is equipped with a low-pressure water pipe ball valve (8).

2. The automatic tidal tank system based on the siphon principle as described in claim 1, characterized in that: It also includes a filter cylinder (9), a water pump (10), an inlet ball valve (11), and an inlet pipe (12). The filter cylinder (9) is used to receive and process water from the main cylinder (1). The water pump (10) is placed in the filter cylinder (9). One end of the water inlet pipe (12) is connected to the outlet of the water pump (10), and the other end is connected to the main cylinder (1) to return the filtered water pump (10) to the main cylinder (1). The water inlet pipe ball valve (11) is installed on the water inlet pipe (12) to regulate the water flow rate entering the main cylinder (1).

3. The automatic tidal tank system based on the siphon principle as described in claim 2, characterized in that: The backpack (2) is connected to the filter cylinder (9) below through the internal low water pipe (3) and high water pipe (6). The outlet of the low water pipe (3) and the outlet of the high water pipe (6) both lead to the filter cylinder (9), so that the water discharged from the main cylinder (1) is introduced into the filter cylinder (9) for filtration.

4. The automatic tidal tank system based on the siphon principle as described in claim 3, characterized in that: The negative pressure inlet pipe (5) is a flexible pipe with an inner diameter of 2-4 mm. When the water level in the backpack (2) submerges its pipe opening, water is introduced into the cylindrical cavity (4a) to maintain the siphon effect in the high-low water pipe (6). When the water level drops to the point where the flexible pipe opening is exposed to air, air is introduced into the cylindrical cavity (4a) to break the siphon effect in the high-low water pipe (6).

5. The automatic tidal tank system based on the siphon principle as described in claim 4, characterized in that: The diameter of the high-level drainage pipe (6) is larger than that of the low-level drainage pipe (3), which is used to provide a drainage flow rate much greater than that of the low-level drainage pipe (3) after the siphon effect is formed.

6. The automatic tidal tank system based on the siphon principle as described in claim 5, characterized in that: The inlet height of the high-low water pipe (6) is fixed and is used to set the high tide level line that triggers the siphon effect in the main cylinder (1). The inlet height of the low-low water pipe (3) is fixed and is used to maintain the basic water level line in the main cylinder (1) under non-siphon state.

7. The automatic tidal tank system based on the siphon principle as described in claim 6, characterized in that: It includes a high tide phase and a low tide phase, wherein during the high tide phase, the inlet flow rate of the water pump (10) is greater than the drainage flow rate when only the low drain pipe (3) is working; during the low tide phase, the sum of the siphon drainage flow rate of the high drain pipe (6) and the drainage flow rate of the low drain pipe (3) is greater than the inlet flow rate of the water pump (10).

8. The automatic tidal tank system based on the siphon principle as described in claim 7, characterized in that: The height of the opening of the negative pressure inlet pipe (5) extending into the inside of the backpack (2) is adjustable, and is used to set the low water level line of the main cylinder (1) when the siphon is broken, and the low water level line is higher than the inlet height of the lower water pipe (3).

9. The automatic tidal tank system based on the siphon principle as described in claim 8, characterized in that: The flow rate of water entering the main cylinder (1) is controlled by adjusting the ball valve (11) of the inlet pipe, and the cycle of the tidal cycle is controlled by changing the time required for the water level to rise from the low water level line to the high water level line.

10. The automatic tidal tank system based on the siphon principle as described in claim 9, characterized in that: When the water level rises to the inlet of the high-pressure drain pipe (6), an overflow is triggered, and the negative pressure inlet pipe (5) guides the water into the siphon device (4) in an underwater state to promote the complete formation of the siphon; When the water level drops under the siphon effect, the negative pressure inlet pipe (5) continues to maintain the siphon until the negative pressure inlet pipe (5) is exposed above the water surface and air is drawn in. The siphon is broken and the cycle restarts.

Images