Overflow drain float valve

Abstract

The utility model discloses a kind of overflow drainage with float ball valve, belong to aquatic breeding equipment technical field.The utility model adopts technical scheme for a kind of overflow drainage with float ball valve, including drainage pipeline, sealing element, connecting piece, float ball piece;Wherein, rotating shaft is provided in the middle of sealing element and is rotated and connected in the inside of drainage pipeline near one end of pipe orifice by rotating shaft, float ball piece is connected in the side of sealing element away from rotating shaft by connecting piece;The utility model passes through the design of the sealing element and diversified connecting piece of rotation connection, make float ball piece movement flexible transmission to sealing element, to adapt to different water level difference conditions and inhibit water flow disturbance influence, with simple structure, strong adaptability, responsive sensitive advantage, can effectively solve the water level difference adaptation problem of different specifications fish tank, and reduce the misoperation caused by water flow disturbance.

Description

Technical Field

[0001] This utility model belongs to the technical field of aquarium breeding equipment, specifically relating to an overflow drainage float valve. Background Technology

[0002] In aquariums and aquarium systems, the stability of the water cycle directly affects water quality and the living environment of aquatic organisms. Overflow drainage control, as a core component in maintaining water levels within a safe range, plays a crucial role in preventing water abnormalities. The water level must be precisely maintained within a specific range to meet the activity and viewing needs of aquatic organisms while simultaneously working in conjunction with filtration, aeration, and other circulation components to purify the water. If the water level exceeds the safe threshold due to factors such as errors during water changes, excessive evaporation compensation, or filtration system malfunctions, and the overflow device fails to respond promptly, it will not only cause water to overflow and damage surrounding facilities but also disrupt the water cycle balance, leading to serious consequences such as water quality deterioration, organism stress, and even death. Therefore, overflow drainage devices suitable for aquarium settings must possess flexible adaptability and rapid response characteristics to different water level differences.

[0003] Float valves, with their advantages of being unpowered and having a simple structure, have become a commonly used control element in aquarium overflow drainage systems. Their basic working principle is based on the buoyancy change generated by the rise and fall of the float as the water level rises and falls. This buoyancy is transmitted through a linkage mechanism, driving the seal to open and close the drain outlet to achieve overflow start and stop. However, the specific application scenarios of aquariums place differentiated requirements on float valves: different sizes of aquariums (such as small desktop tanks and large aquariums) have significant differences in water level, and the same aquarium may require dynamic adjustment of the safe water level range at different stages of breeding (such as the fry rearing period and the adult fish breeding period). This requires float valves to adapt to diverse changes in liquid level height. Currently, commercially available aquarium float valves generally suffer from compatibility and responsiveness deficiencies. Most products use a fixed-structure linkage to connect the float and the seal, resulting in a single transmission ratio. This means that overflow can only be effectively triggered under specific water level differences, failing to meet the flexibility of water level adjustment for different aquarium sizes or aquaculture needs. When used in small aquariums with small water level differences, the seal opening is prone to delays, causing water to overflow. When used in large aquariums with large water level differences, the trigger threshold is too high, making it difficult to initiate overflow in time. At the same time, the complex water flow environment inside the aquarium (such as the directional water flow generated by the filter pump and random disturbances caused by fish activity) can cause the float to wobble irregularly. If the existing linkage structure is too rigid or the hinge gap is not properly controlled, it will further amplify the transmission error, causing the seal to respond late or malfunction. This not only reduces the overflow control accuracy but also exacerbates mechanical wear due to frequent start-stop cycles, shortening the device's lifespan. Utility Model Content

[0004] The purpose of this application is to provide an overflow and drainage float valve, which has the advantages of simple structure, strong adaptability and sensitive response, and can effectively solve the problem of water level difference adaptation for fish tanks of different sizes, and reduce malfunctions caused by water flow disturbance.

[0005] This application provides a float valve for overflow drainage, the technical solution of which is as follows: An overflow drainage float valve includes a drainage pipe, a seal, a connector, and a float; wherein, the seal has a rotating shaft in the middle and is rotatably connected to one end of the drainage pipe near the pipe opening, and the float is connected to the side of the seal away from the rotating shaft via the connector.

[0006] Furthermore, this application also proposes that the connector is an integral connecting rod, with both ends of the connecting rod being fixedly connected to the float and the side of the seal away from the rotation axis, respectively.

[0007] Furthermore, this application also proposes that the connector includes an integral connecting rod, one end of which is fixedly connected to the float, a hinge seat is fixedly connected to the side of the seal away from the rotation axis, and the other end of the connecting rod is hinged to the hinge seat.

[0008] Furthermore, this application also proposes that the connecting member is a split linkage structure, which includes a first linkage and a second linkage. The first linkage and the second linkage are hinged end to end. A hinge seat is fixedly connected to the side of the seal away from the rotation axis. The end of the first linkage away from the second linkage is hinged to the hinge seat. The end of the second linkage away from the first linkage is fixedly connected to the float.

[0009] Furthermore, this application also proposes that the connecting member is a split linkage structure, which includes a first linkage and a second linkage. The first linkage and the second linkage are hinged at their ends. A hinge seat is fixedly connected to the side of the seal away from the rotation axis. The end of the first linkage away from the second linkage is hinged to the hinge seat. The end of the second linkage away from the first linkage is fixedly connected to the float. The second linkage is a U-shaped structure with the opening facing downward so that the float and the drainage pipe are arranged side by side.

[0010] Furthermore, this application also proposes that the float component has an internally hollow spherical structure.

[0011] Furthermore, this application also proposes that the sealing element is a circular sealing plate structure with the same diameter as the inner diameter of the drainage pipe, the sealing element is made of rigid material, and a sealing ring is provided on the outer edge of the sealing element.

[0012] Due to the adoption of the above technical solution, the beneficial effects achieved by this utility model are as follows: 1. Effectively solves the problems of poor adaptability and inaccurate response of float valves under different water level differences. The rotating connection design of the sealing element improves the smoothness of response and the reliability of action when water level fluctuates. At the same time, the lever-type linkage structure not only enhances the sensitivity to small water level changes, ensuring timely triggering of overflow action even under low water level differences, but also avoids malfunctions caused by complex water flow environments by dispersing the influence of external disturbances, thereby improving the accuracy and stability of overflow drainage control.

[0013] 2. When the water level rises, the float rises under the action of buoyancy, and directly pulls the seal to rotate around the rotation axis through the fixedly connected integrated rod, so that the seal opens to drain water; when the water level drops, the float falls, and the seal resets and closes under the action of gravity or water flow. This structure ensures the accurate transmission of the movement of the float to the seal, reduces the response deviation caused by the amplification of gaps under water flow disturbance, and enhances the stability of the overall structure.

[0014] 3. The float valve is driven by changes in water level to generate vertical displacement, which is directly transmitted to the seal via an integrated connecting rod. Due to the hinged design of the connecting rod and the hinge seat, a degree of freedom for slight oscillation is formed in the vertical direction. When water flow disturbance or biological activity in the aquarium causes vibration, this hinged structure can buffer and dissipate the vibration energy, preventing it from being transmitted to the seal. At the same time, the seal rotates smoothly around the rotation axis, responding only to stable displacement signals generated by actual water level changes, thereby ensuring that the opening and closing action of the seal is strictly synchronized with the water level change, avoiding response lag or false triggering.

[0015] 4. Through the design of the split linkage structure, the first and second linkages form a deformable four-bar linkage mechanism when the float rises and falls with the water level. The lever arm length automatically adjusts with the change of the movement angle, thereby changing the ratio of float displacement to seal rotation angle according to the actual water level difference requirements. This avoids the defect that fixed linkages are only suitable for specific water level differences. This application can flexibly adapt to the small water level difference of small fish tanks and the large water level difference of large aquariums, avoiding overflow or response delay problems caused by water level difference mismatch. At the same time, it effectively buffers the float shaking caused by fish activity or filter pump water flow, reduces the phenomenon of accidental opening and closing of seals, and improves the reliability of overflow control and the service life of the device.

[0016] 5. By setting the second link into a U-shaped structure with the opening facing downwards, an initial installation position is provided for the float component below the position of the upper port of the drainage pipe. During the rise of the water level, the buoyancy of the float component first pushes the float component to rise. The float component drives the seal to flip through the first link and the second link, opening the drainage channel. That is, the drainage channel is ensured to be open before the water level reaches the opening of the drainage channel, thus improving the response speed of overflow drainage. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model; Figure 2 This is a schematic diagram of the structure of Embodiment 2 of the present invention; Figure 3 This is one of the structural schematic diagrams of Embodiment 3 of this utility model; Figure 4 This is a second structural schematic diagram of Embodiment 3 of the present invention; Figure 5 This is the third structural schematic diagram of Embodiment 3 of the present utility model; Figure 6 This is a structural schematic diagram of Embodiment 4 of the present invention.

[0018] The accompanying drawings, which are provided to further illustrate the present invention and constitute a part of the present invention, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0019] In the attached diagram: 1. Drainage pipe; 2. Seal; 21. Rotating shaft; 22. Hinge seat; 3. Connector; 31. First connecting rod; 32. Second connecting rod; 4. Float ball. Detailed Implementation

[0020] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0022] Furthermore, it should be understood in the description of this utility model that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "implementation," "example," "aspect," or "specific example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0025] In traditional aquarium water circulation systems, the stability of water level control is directly related to water quality maintenance and the protection of the aquatic organisms' living environment. Existing float valves, due to their fixed-structure linkage mechanism, suffer from adaptability defects and insufficient response accuracy under different water level differences. Specifically, the linkage design has a single transmission ratio, failing to dynamically adjust the opening and closing threshold of the seal according to the range of water level changes. Simultaneously, float swaying caused by water flow disturbances is directly transmitted to the seal through the rigid linkage, resulting in delayed action or false triggering. When the water level difference is small, the delayed opening of the seal easily leads to the risk of overflow; when the water level difference is large, an excessively high trigger threshold results in insufficient overflow response, thereby disrupting the water circulation balance.

[0026] For example, during routine maintenance of a small desktop aquarium, when changing the water, the water level only needs to rise slightly to reach the safe threshold. However, due to the fixed linkage ratio, the float displacement change is not effectively amplified, causing the seals to fail to open in time for drainage. Furthermore, the water flow disturbance generated by the filter pump causes the float to wobble irregularly, and the excessively large gap in the hinge structure further amplifies the transmission error, leading to frequent opening and closing of the seals even at non-overflow water levels. Consequently, water overflow not only damages surrounding facilities but also interferes with the normal operation of the filter components due to abnormal water level fluctuations, resulting in a decrease in water purification efficiency.

[0027] If the above problems are not resolved, abnormal water levels cannot be accurately controlled, which may continue to cause water overflow accidents, resulting in moisture damage to surrounding electronic equipment. At the same time, the imbalance of the water circulation system will exacerbate the process of water quality deterioration, increase the risk of stress response in aquatic organisms, and accelerate the mechanical wear of seals and connecting rod components, ultimately affecting the reliability and service life of the entire drainage device.

[0028] Therefore, refer to Figures 1-6 To address the technical bottlenecks in adaptability and response stability of water level differences, this application proposes an overflow drainage float valve, including a drainage pipe 1, a sealing element 2, a connecting element 3, and a float element 4; the sealing element 2 has a rotating shaft 21 in the middle and is rotatably connected to one end of the drainage pipe 1 near the pipe opening through the rotating shaft 21, and the float element 4 is connected to the side of the sealing element 2 away from the rotating shaft 21 through the connecting element 3.

[0029] In overflow drainage systems, the adaptability and response accuracy under different water level differences have long been problematic. This application provides a solution to this problem. The drainage pipe 1 serves as the basic structure, providing a water flow channel and installation support. Its internal layout near the pipe opening ensures that the sealing action directly acts on the overflow control point. A rotating shaft 21 is located in the center of the seal 2, which is a shaft-shaped component used for rotatable connection. In practical applications, the rotating shaft 21 can be implemented using a metal pin or a rolling bearing. For example, the seal can be fixed to the inner wall of the drainage pipe using a pin, or a bearing structure can be used to reduce rotational resistance. Furthermore, the seal 2 is rotatably connected to the end of the drainage pipe 1 near the pipe opening via the rotating shaft 21. This rotatable connection can be achieved using a hinge structure or a pivot connection, for example, by setting a pivot point on the inner wall of the drainage pipe to allow the seal to rotate around the shaft. A float 4 is connected to the side of the seal 2 away from the rotating shaft 21 via a connector 3. Specifically, the connector 3 can be connected using a flexible rope, chain, or elastic band. For example, a nylon rope can be used to connect the float to the seal, or a metal chain can be used to transmit motion. Thus, this embodiment uses a rotating connection design to allow the seal to rotate and open, avoiding the frictional resistance of a translational structure. Simultaneously, the float's connection position is far from the rotation axis 21, utilizing the lever principle to convert the float's lifting and lowering displacement. This allows even small changes in water level to drive the seal to rotate, adapting to control requirements under different water level differences and dispersing the impact of water flow disturbances on the seal's transmission, thereby improving the system's response stability in complex water flow environments.

[0030] This overflow drainage float valve includes a drainage pipe 1, a seal 2, a connector 3, and a float 4. The seal 2 has a rotating shaft 21 in its center, which is rotatably connected to one end of the drainage pipe 1 near the pipe opening, allowing the seal 2 to rotate around the shaft 21. The float 4 is connected to the side of the seal 2 away from the rotating shaft 21 via the connector 3. When the water level rises, the float 4 rises with the water level, transmitting force to the far end of the seal 2 through the connector 3, driving the seal 2 to rotate around the shaft 21 to open the drainage channel. When the water level drops, the float 4 sinks, and the seal 2 resets under gravity, closing the drainage channel. This rotary connection avoids the frictional resistance of traditional translational structures, allowing the seal 2 to respond smoothly during water level fluctuations, significantly reducing the risk of jamming and improving operational sensitivity. Furthermore, since the connection position of the float component 4 is far from the rotation axis 21, the lifting displacement of the float component 4 is amplified by the lever principle, so that a small change in water level can drive the seal component 2 to produce a significant rotation angle, thereby adapting to the precise control requirements of small water level difference scenarios; at the same time, this lever structure can disperse the impact force brought by water flow disturbance, reduce the direct transmission effect of float swaying on the seal component 2, avoid malfunctions and enhance the stability of the system in complex water flow environments.

[0031] For example, the seal 2 can be a circular plate structure made of rigid engineering plastic, the rotating shaft 21 can be made of stainless steel, the float 4 can be a hollow polyethylene sphere, and the connector 3 can be a rigid metal rod. In practical applications, when the water level in the aquarium rises due to excessive evaporation compensation, the float 4 floats up and acts on the far end of the seal 2 through the connector 3, causing the seal 2 to rotate quickly and open the drainage channel, thus achieving the overflow drainage function.

[0032] Therefore, this technical solution effectively solves the problems of poor adaptability and inaccurate response of float valves under different water level differences. The rotating connection design of seal 2 improves the smoothness of response and reliability during water level fluctuations. Simultaneously, the lever-type linkage structure not only enhances sensitivity to small water level changes, ensuring timely triggering of overflow action even under low water level differences, but also avoids malfunctions caused by complex water flow environments by dispersing the influence of external disturbances, thereby improving the accuracy and stability of overflow drainage control.

[0033] As for the specific structure of the connector 3 in this application, this application does not make specific limitations, and it can adopt any of the following embodiments: Example 1: Refer to Figure 1 This application further proposes that the connector 3 is an integral connecting rod, with both ends of the connecting rod being fixedly connected to the float 4 and the side of the seal 2 away from the rotating shaft 21, respectively.

[0034] The integrated connecting rod is a rod-shaped structure integrally formed from a single material, without movable joints. It can be made of metal rods, plastic injection molded parts, or composite material extrusion parts. The purpose is to eliminate the gaps between multiple parts and ensure the rigidity of motion transmission. Specifically, the lifting and lowering motion of the float 4 is directly transmitted to the seal 2 through the integrated connecting rod. Since the connecting rod is a rigid structure and its two ends are fixedly connected, the motion delay caused by the gap at the hinge point is avoided. When the water level rises, the float 4 rises under the action of buoyancy, and the fixedly connected integrated connecting rod directly pulls the seal 2 to rotate around the rotation axis 21, so that the seal 2 opens to drain water. When the water level drops, the float 4 falls, and the seal 2 resets and closes under the action of gravity or water flow. This structure ensures the accurate transmission of the motion of the float 4 to the seal 2, reduces the response deviation caused by the amplification of gaps under water flow disturbance, and enhances the overall structural stability.

[0035] As a specific implementation method, the connecting rod can be a solid stainless steel rod, one end of which is fixedly connected to the internal thread hole of the float 4 through external thread, and the other end is fixedly connected to the designated position of the seal 2 by welding. The float 4 has an internal hollow spherical structure, and the seal 2 is a circular sealing plate structure with the same diameter as the inner diameter of the drainage pipe 1, and a sealing ring is provided on its outer edge.

[0036] Through the above solution, this application effectively avoids the gap between multiple components, so that the lifting and lowering movement of the float 4 can be directly and without delay transmitted to the seal 2, ensuring the timeliness and accuracy of the opening and closing action of the seal 2, improving the reliability of overflow drainage control, and preventing the risk of overflow and shortened life of the device caused by response lag or malfunction.

[0037] Specifically, in the implementation of float valves, rigid fixed connection methods can easily transmit float movement directly to the seals under the complex water flow environment and biological activity disturbances in aquariums, resulting in delayed response or malfunction of the seals, affecting the accuracy and stability of overflow control.

[0038] Example 2: Refer to Figure 2 This application further proposes that the connector 3 includes an integral connecting rod, one end of which is fixedly connected to the float 4, and the side of the seal 2 away from the rotating shaft 21 is fixedly connected to the hinge seat 22, and the other end of the connecting rod is hinged to the hinge seat 22.

[0039] The hinge seat 22 is a rotating fulcrum bearing component fixed to the outside of the seal 2. It can be implemented by using a lug structure with a pin hole or a ball head base. The hinge connection is a movable connection between the connecting rod and the hinge seat 22 that allows rotation around a single axis. It can be implemented by using a pin engagement or a universal joint structure to absorb vibration interference caused by non-water level changes.

[0040] Specifically, the solution of this application drives the float 4 to generate vertical displacement through water level changes. This displacement is directly transmitted to the seal 2 via an integrated connecting rod. Due to the hinged design of the connecting rod and the hinge seat 22, a degree of freedom that can swing slightly in the vertical direction is formed. When the water flow in the aquarium is disturbed or biological activity causes vibration, the hinged structure can buffer and dissipate the vibration energy, preventing it from being transmitted to the seal 2. At the same time, the seal 2 rotates smoothly around the rotation axis 21, responding only to the stable displacement signal generated by the actual water level change, thereby ensuring that the opening and closing action of the seal 2 is strictly synchronized with the water level change, avoiding response lag or false triggering.

[0041] As a preferred embodiment, the solution of this application is implemented as follows: The connecting rod adopts a rigid metal straight rod structure, one end of which is fixedly connected to the float 4 through a threaded fastener, and the other end is hinged to the hinge seat 22 through a cylindrical pin; the hinge seat 22 is a metal lug welded to the outside of the seal 2, and its pin hole axis is arranged horizontally; when the water level rises, the float 4 floats up and drives the connecting rod to swing around the hinge point, pushing the seal 2 to rotate around the rotation axis 21 to open the drainage channel; when the water flow impact of the filter pump causes the float 4 to shake, the small swing at the hinge effectively isolates the vibration transmission and maintains the stable state of the seal 2.

[0042] Through the above solution, this application effectively mitigates the impact of complex environmental disturbances in the aquarium on the overflow control accuracy, ensures that the seal only responds to real water level change signals, and significantly improves the reliability and response accuracy of the overflow drainage action.

[0043] Specifically, in some of the embodiments described above in this application, a connector is proposed to connect the float and the seal. However, in its implementation, the fixed structure of the connector results in a single transmission ratio, which cannot adapt to the water level difference changes of different aquarium sizes. At the same time, the float swaying caused by water flow disturbance in the aquarium will be directly transmitted to the seal through the rigid connection, causing response lag or false opening and closing, affecting the overflow control accuracy and device life.

[0044] Example 3: Reference Figures 3-5 This application further proposes that the connecting member 3 is a split linkage structure, which includes a first link 31 and a second link 32. The first link 31 and the second link 32 are hinged end to end. The sealing member 2 is fixedly connected to the side away from the rotation axis 21 with a hinge seat 22. The end of the first link 31 away from the second link 32 is hinged to the hinge seat 22, and the end of the second link 32 away from the first link 31 is fixedly connected to the float member 4.

[0045] In practical applications, the split-link structure is a transmission mechanism composed of multiple links connected by hinges. It can be implemented using two or more links hinged together, for example, by hinged end-to-end between the first and second links to provide a variable motion trajectory. Its purpose is to dynamically adjust the transmission ratio through structural deformation. Specifically, the first link 31 connects the hinge seat and the second link. It can be a straight or curved rod, such as a metal or plastic rod, to adapt to different installation spaces. Its purpose is to transmit the float's motion and maintain the lever effect. The second link 32 connects the float to the first link. It can be a straight rod or a rod of a specific shape, such as an L-shaped or Z-shaped structure, to optimize the transmission efficiency of the float's motion. Its purpose is to suppress high-frequency shaking by combining deformable characteristics. In practical applications, the hinge seat 22 is the hinge fulcrum fixed to the seal. It can be a boss or lug structure, such as a metal lug on the seal, to ensure the stability of the hinge. Its purpose is to provide a reliable rotational fulcrum to maintain transmission stability. Among them, the hinged connection is a connection method that allows relative rotation. It can be implemented using a pin, bearing or ball joint structure to provide the necessary degrees of freedom. Its purpose is to absorb disturbance energy in the non-perpendicular direction.

[0046] Specifically, the solution of this application, through the design of a split linkage structure, enables the first linkage 31 and the second linkage 32 to form a deformable four-bar linkage mechanism when the float 4 rises and falls with the water level. The lever arm length automatically adjusts with the change of the motion angle, thereby changing the ratio of the float displacement to the rotation angle of the seal 2 according to the actual water level difference requirements, avoiding the defect that the fixed linkage is only suitable for a specific water level difference. At the same time, the hinge seat 22, as a stable fulcrum, ensures the reliability of the hinge of the first linkage 31, preventing the connection from loosening or shifting during the movement and maintaining the stability of the transmission path. The hinge point allows the first linkage 31 to swing freely in the vertical plane, absorbing the lateral sway of the float caused by fish activity or the water flow of the filter pump, and converting the disturbance in the non-vertical direction into a small change in the linkage angle, dynamically buffering energy. The fixed connection between the second linkage 32 and the float 4, combined with the deformable characteristics of the split structure, not only ensures the efficient transmission of the float displacement, but also suppresses the amplification effect of high-frequency swaying, making the response of the seal 2 more in line with the actual water level changes.

[0047] As a preferred embodiment, the solution of this application is specifically implemented as follows: both the first connecting rod 31 and the second connecting rod 32 are stainless steel straight rods, and the two ends are hinged by a standard pin; the hinge seat 22 is a metal ear seat welded on the seal 2, and the end of the first connecting rod 31 away from the second connecting rod 32 is hinged to the hinge seat 22 by a pin; the float 4 is fixed to the end of the second connecting rod 32 away from the first connecting rod 31 by a threaded connection. This connection can ensure the direct transmission of the float movement, and at the same time, the split connecting rod structure forms a flexible transition when the water level in the aquarium changes.

[0048] Through the above solution, this application can flexibly adapt to the small water level difference of small fish tanks and the large water level difference of large aquariums, avoiding overflow or response delay problems caused by mismatch in water level difference. At the same time, it effectively buffers the float shaking caused by fish activity or filter pump water flow, reduces the phenomenon of accidental opening and closing of seals, and improves the reliability of overflow control and the service life of the device.

[0049] In some of the embodiments described above in this application, a split linkage structure is proposed to improve the adaptability and flexibility of the float valve to different water level differences. However, in its implementation, the position and layout of the float may cause the float to shake irregularly in complex water flow environments of the aquarium (such as the water flow of the filter pump or the disturbance of fish activity), resulting in unstable linkage transmission path, causing the seal to respond late or malfunction, thereby affecting the overflow control accuracy and possibly shortening the life of the device.

[0050] Example 4: Reference Figure 6 This application further proposes that the connecting member 3 is a split linkage structure, which includes a first link 31 and a second link 32. The first link 31 and the second link 32 are hinged end to end. The sealing member 2 is fixedly connected to the side away from the rotation axis 21 with a hinge seat 22. The end of the first link 31 away from the second link 32 is hinged to the hinge seat 22. The end of the second link 32 away from the first link 31 is fixedly connected to the float member 4. The second link 32 is a U-shaped structure with the opening facing downward so that the float member 4 and the drainage pipe 1 are arranged side by side.

[0051] By setting the second link 32 into a U-shaped structure with the opening facing downwards, the float 4 is provided with an initial installation position below the position of the upper port of the drain pipe 1. During the rise of the water level, the buoyancy of the float 4 first pushes the float 4 to rise. The float 4 drives the seal to flip through the first link 31 and the second link 32, opening the drain channel 1. That is, the drain channel 1 is ensured to be open before the water level reaches the opening of the drain channel 1, which improves the response speed of overflow drainage.

[0052] In this regard, refer to Figures 1-6 This application further proposes the above-mentioned overflow drainage float valve, wherein the float element 4 has an internal hollow sphere structure.

[0053] Among them, the float 4 is the core component used to provide buoyancy to drive the opening and closing of the seal as the water level changes. It can be realized by adopting an internally hollow spherical structure, such as a hollow sphere made of polypropylene, polyethylene or lightweight aluminum alloy. The purpose is to significantly reduce the overall density, enhance the buoyancy response capability, and avoid the problem of opening delay caused by insufficient buoyancy.

[0054] Specifically, the solution of this application designs the float 4 as an internally hollow spherical structure, which enables it to more efficiently utilize the buoyancy of the water to achieve rapid floating when the water level rises. This allows the connecting part 3 to transmit a stable torque, driving the seal 2 to rotate around the rotation axis 21 to open the drainage channel. At the same time, the lightweight design effectively suppresses the inertial influence of water flow disturbance in the aquarium, ensuring that the opening and closing action of the seal 2 is precisely synchronized with the water level change, thus forming a reliable overflow control mechanism for scenarios with small water level differences.

[0055] As a specific implementation method, the solution of this application is implemented as follows: the float 4 can be made of polypropylene material with an internal hollow spherical structure, its outer surface is smooth to reduce water flow resistance, and the inside is a cavity structure to reduce density. This design can quickly respond to small water level changes in small aquarium applications.

[0056] Through the above solution, this application significantly optimizes the buoyancy characteristics and dynamic response capability of the float component 4, effectively solves the problem of delayed opening of the seal caused by insufficient buoyancy and inertial delay, improves the reliability of overflow control, and avoids the risk of water overflow in small aquarium scenarios.

[0057] Specifically, in some of the embodiments described above in this application, a sealing element is proposed to control the opening and closing of the drainage pipe. However, in the process of its implementation, due to the mismatch between the size of the sealing element and the inner diameter of the pipe and the lack of an effective sealing structure at the edge, gaps exist in the closed state, causing water leakage and response lag. In particular, in the environment of water flow disturbance in the aquarium, the instability of overflow control is aggravated, affecting the accuracy of water quality management.

[0058] In this regard, this application further proposes that the sealing element 2 is a circular sealing plate structure with the same diameter as the inner diameter of the drainage pipe 1, the sealing element 2 is made of rigid material, and a sealing ring is provided on the outer edge of the sealing element 2.

[0059] In practical applications, the sealing ring set on the outer edge of the seal 2 is a ring structure made of elastic material, such as silicone or rubber. Its purpose is to fill the microscopic unevenness between the inner wall of the pipe and the seal 2 through elastic deformation, providing an additional sealing barrier.

[0060] Specifically, the solution of this application precisely matches the size of the seal 2 to the inner diameter of the drainage pipe 1. When the float 4 drives the seal 2 to rotate to the closed position as the water level rises, it can completely cover the pipe outlet, eliminating gaps caused by size differences. At the same time, the rigid material seal 2 is not easily deformed in a dynamic water environment, maintaining structural stability. The sealing ring on the outer edge uses elasticity to fill the microscopic unevenness between the inner wall of the pipe and the seal 2, providing an additional sealing barrier. The three work together to ensure that the seal 2 fits tightly against the inner wall of the drainage pipe 1 during the rotation of the rotating shaft 21, effectively preventing water leakage from the edge, thereby improving the response accuracy and stability of overflow control.

[0061] Through the above solution, this application effectively solves the problem of water leakage caused by poor sealing, improves the response speed and stability of overflow control, ensures that the aquarium water level is maintained within the safe threshold, and avoids the risk of water quality deterioration caused by leakage or delayed response.

[0062] For any parts not mentioned in this utility model, existing technologies can be used or referenced.

[0063] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0064] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A float valve for overflow drainage, characterized in that, Includes drainage pipe (1), seal (2), connector (3), float (4); The sealing element (2) has a rotating shaft (21) in the middle and is rotatably connected to the end of the drain pipe (1) near the pipe opening via the rotating shaft (21). The float element (4) is connected to the side of the sealing element (2) away from the rotating shaft (21) via the connector (3).

2. The overflow drainage float valve according to claim 1, characterized in that, The connector (3) is an integral connecting rod, and the two ends of the connecting rod are fixedly connected to the float (4) and the sealing element (2) on the side away from the rotating shaft (21), respectively.

3. The overflow drainage float valve according to claim 1, characterized in that, The connector (3) includes an integral connecting rod. One end of the connecting rod is fixedly connected to the float (4). The sealing element (2) is fixedly connected to a hinge seat (22) on the side away from the rotation axis (21). The other end of the connecting rod is hinged to the hinge seat (22).

4. A float valve for overflow drainage according to claim 1, characterized in that, The connector (3) is a split-type linkage structure, which includes a first link (31) and a second link (32). The first link (31) and the second link (32) are hinged at their ends. The sealing member (2) is fixedly connected to a hinge seat (22) on the side away from the rotation axis (21). The end of the first link (31) away from the second link (32) is hinged to the hinge seat (22), and the end of the second link (32) away from the first link (31) is fixedly connected to the float member (4).

5. A float valve for overflow drainage according to claim 1, characterized in that, The connector (3) is a split-type linkage structure, which includes a first link (31) and a second link (32). The first link (31) and the second link (32) are hinged at both ends. The sealing member (2) is fixedly connected to a hinge seat (22) on the side away from the rotation axis (21). The end of the first link (31) away from the second link (32) is hinged to the hinge seat (22). The end of the second link (32) away from the first link (31) is fixedly connected to the float (4). The second link (32) is a U-shaped structure with the opening facing downward so that the float (4) and the drainage pipe (1) are arranged side by side.

6. A float valve for overflow drainage according to claim 1, characterized in that, The float component (4) has an internal hollow spherical structure.

7. A float valve for overflow drainage according to claim 2, characterized in that, The sealing element (2) is a circular sealing plate structure with the same diameter as the inner diameter of the drainage pipe (1). The sealing element (2) is made of hard material and has a sealing ring on its outer edge.

Images