A water level display device

Abstract

The utility model discloses a water level display device belongs to water level measurement technical field, including floating element, observation piece and transmission mechanism, and floating element is used for inductive water level change, observation piece is used for indicating water level height, transmission mechanism connects between floating element and observation piece, transmission mechanism is configured as, when floating element moves with water level rising, can drive observation piece same direction removal, and observation piece's removal distance is less than floating element's removal distance. The device adjusts the proportion of the removal distance of floating element and observation piece relative to the water level rise, reduces the displacement of observation piece when the water level rises, makes observation piece can effectively and stably indicate water level height under the scene of different water level change amplitude, improves the adaptability of device.

Description

Technical Field

[0001] This utility model relates to the field of water level measurement technology, and in particular to a water level display device. Background Technology

[0002] A water level gauge is a device widely used in containers such as water tanks and planting machines to visually display the level of liquid inside. Traditional mechanical water level gauges typically employ a structure where a float and a display rod are directly connected. The float rises and falls with the water level, and a connecting rod directly moves the graduated display rod. This structure creates a 1:1 linear relationship between the displacement of the display rod and the displacement of the float (i.e., the actual change in water level).

[0003] The aforementioned traditional direct-drive water gauges are adequate for measuring shallow water. However, when applied to deeper water, the indicator rod needs to be as long as the water depth, resulting in a very high exposed portion. This makes the entire device appear obtrusive and uncoordinated, affecting the overall aesthetics of the product. Furthermore, the excessively long exposed indicator is highly susceptible to collisions and entanglement with components and structures inside the container, potentially damaging these parts or even causing the water gauge itself to become damaged or jammed. Utility Model Content

[0004] The purpose of this utility model is to provide a water level display device to solve the technical problems of poor aesthetics, reliability and adaptability of existing water level gauges when water levels change drastically.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A water level display device, comprising:

[0007] Floating components are used to sense changes in water level.

[0008] Observation device used to indicate water level height;

[0009] A transmission mechanism is connected between the floating component and the observation component;

[0010] The transmission mechanism is configured such that when the floating component moves with the rising water level, it can drive the observation component to move in the same direction, and the moving distance of the observation component is less than the moving distance of the floating component.

[0011] Preferably, the transmission mechanism includes: a fixed rack extending along the moving direction of the floating member; a gear set connected to the floating member, the gear set including a first gear and a second gear connected to each other, the rotation of the first gear driving the rotation of the second gear; the first gear meshing with the fixed rack, wherein the diameter of the first gear is larger than the diameter of the second gear; and a movable rack connected to the observation member and meshing with the second gear; when the floating member moves upward under the buoyancy of the water, the first gear rotates, thereby driving the second gear to rotate, and thus pulling the movable rack downward relative to the floating member, so that the upward movement distance of the observation member is less than the upward movement distance of the floating member.

[0012] Preferably, the first gear and the second gear are coaxial and connected in a non-rotating manner, and the fixed rack and the movable rack are located on the same side of the rotation axis of the first gear and the second gear.

[0013] Preferably, the device further includes a housing having a receiving cavity, the fixed rack being fixed to the inner wall of the receiving cavity, and the gear set and the movable rack being disposed within the receiving cavity; a guide hole is provided at the top of the housing, and the observation element passes through the guide hole.

[0014] Preferably, the bottom of the receiving cavity is provided with a water inlet, and the floating component is housed in the receiving cavity; or, the floating component is sleeved on the outside of the shell.

[0015] Preferably, when the floating component is housed within the receiving cavity, the inner wall of the receiving cavity forms at least one guide surface for guiding the movement of the floating component.

[0016] Preferably, the device also includes a transparent observation cover, which is disposed on the top of the housing. The transparent observation cover forms an accommodating space inside the housing, and the height of the accommodating space is greater than or equal to the maximum length that the observation element can extend from the guide hole.

[0017] Preferably, one or two guide grooves extending along the moving direction of the floating member are formed on the side wall of the housing; at least one shaft end of the gear set forms a positioning protrusion that is slidably connected to the guide groove; when one guide groove is formed, the positioning protrusion is disposed on the shaft end of the first gear or the second gear; when two guide grooves are formed, the positioning protrusion is disposed on the shaft ends of the first gear and the second gear respectively.

[0018] Preferably, the sidewall of the floating component is provided with a movable groove extending along its own moving direction, and the lower end of the movable rack is slidably connected to the movable groove to guide the movable rack and provide clearance space for the movement of the floating component.

[0019] Preferably, the observation element is a long rod with water level markings.

[0020] The beneficial effects of this utility model are:

[0021] The water level display device proposed in this utility model uses a floating component to sense changes in water level, which floats up and down accordingly when the water level changes. An observation component indicates the water level height, providing users with an intuitive water level display. A transmission mechanism connects the floating component and the observation component, and can drive the observation component and the floating component to move in the same direction when the water level rises. The movement distance of the observation component is less than that of the floating component, effectively overcoming a series of defects caused by the excessively long exposed portion of traditional water gauges when the water depth is large. Specifically, when the water level in the container changes significantly, the floating component undergoes a large displacement with the water level change. The transmission mechanism, through its specific structure, converts the large displacement of the floating component into a smaller displacement of the observation component for output. This allows the observation component to not completely reproduce the absolute height of the water level change at a 1:1 scale. Therefore, the structural dimensions of the observation component, especially the part that needs to be exposed for easy observation, can be shortened, resulting in a more compact and harmonious overall appearance of the device, improving the aesthetics of the product during installation and use. Meanwhile, the reduced length of the exposed portion of the observation element lowers the risk of interference, collision, or even entanglement between the observation element and other components or structures inside the container. This not only ensures the safe operation of other components within the container but also improves the reliability of the water level display device itself. Furthermore, this design, which reduces displacement through a transmission mechanism, allows water level display devices of the same specifications to adapt to the measurement needs of deeper water level containers, enhancing the device's applicability and versatility. Attached Figure Description

[0022] Figure 1 This is an exploded structural diagram of the water level display device provided in this embodiment of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the water level display device provided in this embodiment of the utility model;

[0024] Figure 3 This is a partial structural schematic diagram of the water level display device provided in this embodiment of the utility model.

[0025] In the picture:

[0026] 1. Floating component; 11. Movable groove; 2. Observation component; 3. Transmission mechanism; 31. Fixed rack; 32. Gear set; 321. First gear; 322. Second gear; 323. Positioning protrusion; 33. Movable rack; 4. Housing; 41. Receiving cavity; 42. Guide hole; 43. Water inlet; 44. Guide surface; 45. Guide groove; 5. Transparent observation cover; 51. Accommodation space. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0028] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or 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.

[0029] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0031] See Figures 1 to 3 The water level display device provided in this embodiment includes a floating element 1, an observation element 2, and a transmission mechanism 3. The floating element 1 is used to sense changes in water level; the observation element 2 is used to indicate the water level height; the transmission mechanism 3 connects the floating element 1 and the observation element 2; the transmission mechanism 3 is configured such that when the floating element 1 moves with the rising water level, it can drive the observation element 2 to move in the same direction, and the moving distance of the observation element 2 is less than the moving distance of the floating element 1.

[0032] The water level display device proposed in this utility model includes a floating component 1 that senses changes in water level, causing it to float up and down as the water level changes. An observation component 2 indicates the water level height, providing a clear visual display for the user. A transmission mechanism 3 connects the floating component 1 and the observation component 2, driving both components to move in the same direction when the water level rises. The upward movement distance of the observation component 2 is less than that of the floating component 1, effectively overcoming the drawbacks of traditional water gauges where the exposed portion is too long at greater water depths. Specifically, when the water level in the container changes significantly, the floating component 1 experiences a large displacement. The transmission mechanism 3, through its specific structure, converts this large displacement of the floating component 1 into a smaller displacement of the observation component 2 for output. This eliminates the need for the observation component 2 to perfectly replicate the absolute height of the water level change at a 1:1 scale. Therefore, the structural dimensions of the observation component 2, especially the exposed portion for easy observation, can be shortened, resulting in a more compact and harmonious overall appearance, enhancing the aesthetics of the product during installation and use. Meanwhile, due to the reduction in the length of the exposed portion of the observation element 2, the risk of interference, collision, or even entanglement between the observation element 2 and other components or structures inside the container is reduced. This not only ensures the safe operation of other components inside the container but also improves the reliability of the water level display device itself. Furthermore, this design, which reduces the displacement through the transmission mechanism 3, allows water level display devices of the same specifications to adapt to the measurement needs of deeper water level containers, enhancing the applicability and versatility of the device.

[0033] The specific structure and working principle of the water level display device (hereinafter referred to as the device) will be described in detail below.

[0034] In this embodiment, the main body of the floating component 1 is usually made of a material with a density much lower than that of the liquid being measured, such as a hollow sealed plastic shell or a metal or plastic shell filled with foam material, to ensure that the floating component 1 can float as the water level rises.

[0035] A transmission mechanism 3 connects the floating component 1 and the observation component 2, converting the movement of the floating component 1 with the water level into the movement of the observation component 2, allowing the user to observe water level changes. Specifically, the transmission mechanism 3 includes a fixed rack 31, a gear set 32, and a movable rack 33. The fixed rack 31 is fixedly installed, and its extension direction is consistent with the movement direction of the floating component 1. The gear set 32 ​​is connected to the floating component 1 and includes a first gear 321 and a second gear 322 that are synchronously rotatably connected; that is, the rotation of the first gear 321 can drive the second gear 322 to rotate synchronously, and the diameter of the first gear 321 is set to be larger than the diameter of the second gear 322. The first gear 321 maintains a meshing relationship with the fixed rack 31. The upper part of the movable rack 33 is fixedly connected to the observation component 2, and the movable rack 33 meshes with the second gear 322.

[0036] Its working principle is as follows: When the water level in the container rises, the floating component 1 moves upward under the buoyancy of the water, thereby synchronously driving the entire gear set 32 ​​connected to the floating component 1 to rise together. During this process, because the first gear 321 meshes with the fixed rack 31, the first gear 321 is forced to rotate. The rotation of the first gear 321 will synchronously drive the second gear 322 to rotate at the same angular velocity. The key point is that the diameter of the first gear 321 is larger than the diameter of the second gear 322, that is, the pitch circle circumference of the first gear 321 is larger than the pitch circle circumference of the second gear 322. Therefore, when the floating component 1 drives the gear set 32 ​​to rise, the rotation of the second gear 322 drives the movable rack 33 to move downward relative to the floating component 1. Since the upper part of the movable rack 33 is fixedly connected to the observation component 2, the observation component 2 moves downward relative to the floating component 1. Because the second gear 322 has a smaller circumference, the linear distance that the second gear 322 drives the movable rack 33 to move relative to the floating component 1 is less than the moving distance of the floating component 1. This results in the observation component 2 moving upward a distance less than the floating component 1 moving upward (unless otherwise specified, the moving distance generally refers to the moving distance relative to a fixed position such as the ground). In this way, when the water level changes significantly, the observation component 2 will not experience excessive displacement due to the rising water level. Thus, the transmission effect of the gear sets 32 with different diameters proportionally converts the larger displacement of the floating component 1 into a smaller displacement of the observation component 2.

[0037] In this embodiment, the ratio of the diameter of the first gear 321 to the diameter of the second gear 322 is preferably 3:1 to 5:1. This ratio can stably transmit the displacement of the floating component 1 to the observation component 2 after being proportionally reduced. In other feasible embodiments, the ratio of the diameter of the first gear 321 to the diameter of the second gear 322 can also be adjusted to other values ​​according to different water level measurement ranges and display accuracy requirements, such as larger or smaller ratios. The specific ratio is not limited here. All transmission schemes that use gear sets 32 of different sizes to achieve displacement reduction are within the protection scope of this utility model.

[0038] In other embodiments, the transmission mechanism 3 may include a winding wheel assembly and a wire rope. The winding wheel assembly consists of two coaxially arranged and fixedly connected winding wheels, one large and one small. The radius of the large winding wheel is larger than that of the small winding wheel. One end of the wire rope is fixed to the floating member 1, then passes over a fixed pulley fixed to the device frame, and then winds around the large winding wheel. One end of the other wire rope is connected to the observation member 2, and similarly passes over a fixed pulley before winding around the small winding wheel.

[0039] When the floating component 1 moves upward under the buoyancy of the water, the steel wire rope connected to the floating component 1 is pulled, causing the large winding reel to rotate. Since the large and small winding reels are coaxially fixed, the small winding reel rotates synchronously. The large winding reel has a larger radius, so it winds a relatively longer length of steel wire rope, while the small winding reel has a smaller radius, so it winds a relatively shorter length of steel wire rope. Therefore, the distance the small winding reel moves the steel wire rope connected to the observation component 2 is less than the distance the large winding reel winds due to the movement of the floating component 1, thus ensuring that the movement distance of the observation component 2 is less than the movement distance of the floating component 1. This transmission mechanism 3, combining the winding reel and the steel wire rope, effectively solves the problems of poor aesthetics, reliability, and adaptability inherent in traditional water gauges when water levels fluctuate significantly.

[0040] Preferably, the first gear 321 and the second gear 322 are connected coaxially and in a relatively anti-rotation manner to ensure that they can rotate synchronously at the same angular velocity, thereby avoiding relative rotation or slippage and ensuring the accuracy of the displacement transmission ratio. The anti-rotation connection between the first gear 321 and the second gear 322 can be achieved through key connection, welding, pin connection, or other methods, all of which are conventional techniques in the field and will not be elaborated upon here.

[0041] Meanwhile, the fixed rack 31 and the movable rack 33 are arranged on the same side of the rotation axis of the first gear 321 and the second gear 322, which makes the force on the entire transmission mechanism 3 more balanced and the structure more compact. This effectively reduces the size of the device in the radial direction and avoids the problem of mechanism interference or torque imbalance that may be caused by the racks being placed on both sides.

[0042] To provide stable support and reliable protection for the aforementioned transmission mechanism 3, floating component 1, and observation component 2, the device also includes a housing 4. A receiving cavity 41 is formed inside the housing 4, within which portions of the floating component 1 and observation component 2 are located. Liquid can enter the receiving cavity 41 to push the floating component 1 upwards. A fixed rack 31 is fixedly installed on the inner wall of the receiving cavity 41, providing a stationary reference for the rack 31. The gear set 32 ​​and the movable rack 33 are both accommodated and movably positioned within the receiving cavity 41. A guide hole 42 is provided at the top of the housing 4. The observation component 2 passes through the guide hole 42, which not only provides precise guidance for the up-and-down movement of the observation component 2, preventing it from swaying or jamming, but also forms a channel for the observation component 2 to extend out of the housing 4 to display the water level.

[0043] When the floating component 1 moves with the water level, it causes the entire gear set 32 ​​to shift accordingly. Since the fixed rack 31 remains stationary, the first gear 321 is forced to rotate while moving, and drives the second gear 322 to rotate synchronously through a coaxial connection. The rotation of the second gear 322 drives the movable rack 33, which meshes with it, to move. The movable rack 33 causes the observation component 2 to smoothly extend or retract from the housing 4 under the guidance of the guide hole 42 at the top of the housing 4, thereby reading the water level height from outside the housing 4.

[0044] Furthermore, a water inlet 43 is provided at the bottom of the receiving cavity 41, and the floating member 1 is housed within the receiving cavity 41. In this structure, the liquid in the container can enter the receiving cavity 41 through the water inlet 43 at the bottom, ensuring that the liquid level in the receiving cavity 41 is consistent with the liquid level inside the container. The floating member 1 housed within the cavity directly senses the buoyancy of the liquid inside the cavity and moves with the rise and fall of the liquid level. This built-in design makes the overall structure of the device more integrated and compact. To ensure that the floating member 1 can move smoothly and steadily along a preset path, avoiding deflection, tilting, or jamming against the inner wall of the cavity, the inner wall of the receiving cavity 41 is constructed to form at least one guide surface 44. The guide surface 44 guides the movement of the floating member 1, which can be achieved by the cooperation between the inner wall of the receiving cavity 41 and the side wall of the floating member 1, or by providing protruding guide ribs on the inner wall of the receiving cavity 41 that cooperate with corresponding grooves on the floating member 1.

[0045] Regarding the connection and arrangement between the floating element 1 and the housing 4, other embodiments provide the following implementation: the floating element 1 can also be sleeved on the outside of the housing 4. In this configuration, the floating element 1 itself forms an annular or cylindrical structure, directly sleeved on the outer wall of the housing 4 and sliding along the housing 4. At this time, the floating element 1 is directly exposed to the liquid inside the container, sensing the buoyancy of the external liquid and moving accordingly, without relying on the water inlet 43 on the housing 4. This method simplifies the sealing requirements inside the housing 4, and makes the size of the floating element 1 not limited by the internal space of the receiving cavity 41. Furthermore, the guiding effect of the floating element 1 can be achieved through the cooperation between the outer wall of the housing 4 and the inner wall of the floating element 1.

[0046] Furthermore, the side wall of the floating component 1 is provided with a movable groove 11 extending along its own moving direction. The lower end of the movable rack 33 is slidably connected within the movable groove 11. The inner wall of the movable groove 11 effectively guides and limits the lower end of the movable rack 33, restricting it to only move in a straight line along the moving direction of the floating component 1. This prevents unnecessary lateral swaying or twisting of the movable rack 33 during transmission, thereby ensuring the accuracy and stability of its meshing transmission with the second gear 322. In addition, the movable groove 11 provides crucial clearance space for the movable rack 33 to move relative to the floating component 1. When the floating component 1 moves upward with the water level change, the movable rack 33 can be displaced relative to the floating component 1, and the lower end of the movable rack 33 can slide smoothly within the movable groove 11, thereby avoiding motion interference between structures and ensuring the continuity of the entire transmission sequence.

[0047] To optimize the display effect and provide protection for the observation element 2, the water level display device in this embodiment may further include a transparent observation cover 5. The transparent observation cover 5 is installed on the top of the housing 4, and an accommodating space 51 is formed inside the transparent observation cover 5. The design height of the accommodating space 51 is greater than or equal to the maximum length that the observation element 2 can extend from the guide hole 42, ensuring that the top of the observation element 2 is always located inside the accommodating space 51 of the transparent observation cover 5 without interference throughout the entire water level measurement range. The transparent observation cover 5 allows the user to clearly observe the scale or indicator marks on the observation element 2, thereby reading the water level height; on the other hand, the transparent observation cover 5 isolates the observation element 2 from the external environment, effectively preventing dust and water stains from contaminating the surface of the observation element 2, while also preventing damage or jamming of the observation element 2 due to accidental collisions or contact, thus improving the durability and reliability of the device.

[0048] To ensure the stability of the gear set 32 ​​when it moves under the influence of the floating member 1, and to prevent radial movement or axial misalignment of the gear set 32, thereby ensuring a stable and correct meshing relationship between the gear and the rack, this embodiment provides one or two guide grooves 45 extending along the moving direction of the floating member 1 on the side wall of the housing 4. Correspondingly, a positioning protrusion 323 is formed at at least one shaft end of the gear set 32, which is slidably connected to the guide groove 45. Through the guiding structure, when the gear set 32 ​​moves up and down with the floating member 1, the positioning protrusion 323 at its shaft end is restricted to slide within the guide groove 45, thereby constraining the movement trajectory of the gear set 32.

[0049] Specifically, when only one guide groove 45 is opened on the side wall of the housing 4, the positioning protrusion 323 is set at one of the shaft ends of the first gear 321 or the second gear 322, and the necessary movement stability can be provided by single-point guidance.

[0050] When two guide grooves 45 are formed on the side wall of the housing 4, the positioning protrusions 323 are respectively set at the shaft ends of the first gear 321 and the second gear 322. That is, both ends of the gear set 32 ​​are slidably connected to the corresponding guide grooves 45 through the positioning protrusions 323. This dual-point support guiding method can provide higher motion rigidity and stability, and is especially suitable for working conditions where the axial dimension of the gear set 32 ​​is long or the load is large. It can more effectively prevent the gear set 32 ​​from tilting during movement and ensure smooth and reliable transmission.

[0051] Furthermore, for the observation element 2 used to directly indicate the water level, in this embodiment, the observation element 2 is a long rod with water level markings. The long rod is preferably made of a corrosion-resistant and dimensionally stable material, and its surface is clearly marked with graduations representing the water level. After the observation element 2 is reduced in size by the transmission mechanism 3, although the displacement of its exposed portion is less than the actual change in water level, the graduations on the rod are calibrated using a specific proportional conversion, allowing the user to directly read the displayed graduation values ​​on the observation element 2 to intuitively and accurately determine the actual liquid level in the container. This long rod-shaped observation element 2 has a simple structure, clear indication, and is very convenient for users to observe and read from outside the device.

[0052] It is understood that in other feasible embodiments, the observation element 2 is not limited to the aforementioned long rod with scale, and its specific structure can be designed in various ways according to the actual application scenario and display requirements. For example, a strip structure, a pointer structure, etc., any component that can receive the displacement signal of the transmission mechanism 3 and visually feedback the water level information is a feasible implementation of the observation element 2 of this utility model.

[0053] The specific operation process of some embodiments is described in detail below.

[0054] After the device is installed, precision adjustments are made to ensure that the initial liquid level in the container corresponds to the initial indicated position of the observation element 2. At this time, the floating element 1 is suspended on the liquid surface, and the buoyancy it experiences is balanced by its own weight. The observation element 2 passes through the guide hole 42 at the top of the housing 4 and the transparent observation cover 5, and the scale lines on it are clearly visible.

[0055] As the water level in the container begins to rise, the liquid level slowly increases. The liquid enters the receiving cavity 41 through the inlet 43 at the bottom of the shell 4, and the liquid level in the receiving cavity 41 rises synchronously. Under the increased buoyancy, the floating component 1 begins to move upwards. During this process, the inner wall of the receiving cavity 41, with respect to the guide surface 44 formed by the built-in floating component 1, consistently guides the floating component 1 to maintain a vertical, straight-line movement, preventing it from tilting or rotating.

[0056] The upward movement of the floating component 1 directly causes the entire gear set 32 ​​connected to it to rise together. Since the first gear 321 in the gear set 32 ​​is engaged with the fixed rack 31 fixedly installed on the inner wall of the receiving cavity 41, the first gear 321 is forced to rotate along the fixed rack 31 as the gear set 32 ​​rises. The first gear 321 and the second gear 322 are connected in a coaxial and relatively anti-rotation manner, so the rotation of the first gear 321 is transmitted to the second gear 322, and the two rotate synchronously at the same angular velocity.

[0057] The movable rack 33, meshing with the second gear 322, moves downward relative to the floating member 1 under the rotational drive of the second gear 322. Therefore, although the direction of movement of the movable rack 33 is the same as the direction of movement of the floating member 1 (upward), the upward movement distance of the movable rack 33 is less than the upward movement distance of the floating member 1. The lower end of the movable rack 33 is slidably connected in the movable groove 11 on the side wall of the floating member 1. The movable groove 11 provides guidance for the movable rack 33 to ensure its linear movement, and provides necessary clearance space for the movement of the floating member 1 relative to the movable rack 33 to avoid motion interference.

[0058] The upward movement of the movable rack 33 directly drives the connected observation element 2 to move upward. Guided by the guide hole 42 at the top of the housing 4, the observation element 2 extends smoothly upward. Because the movement distance of the observation element 2 has been proportionally reduced by the transmission mechanism 3, the increase in the length of the observation element 2 extending outside the housing 4 and the transparent observation cover 5 is much smaller than the actual rise in water level. The transparent observation cover 5 ensures that the observation element 2 is protected throughout the entire movement and that the scale is clearly displayed.

[0059] Since the scale value has been pre-calibrated and directly corresponds to the actual water level in the container, although the displacement of the observation piece 2 itself is reduced, the reading reflects the true water level.

[0060] As the water level in the container begins to drop, the liquid level slowly decreases accordingly. The floating component 1, under its own weight, moves downwards synchronously with the liquid level, thereby driving the observation component 2 to retract downwards via the transmission mechanism 3. During the descent of the floating component 1, the observation component 2 moves upwards relative to the floating component 1 under the action of the transmission mechanism 3; therefore, the movement distance of the observation component 2 is less than the movement distance of the floating component 1. The coordinated actions and transmission relationships between the components during this process are consistent with the transmission principle and displacement ratio relationship of the aforementioned water level rise process, and will not be elaborated upon here. Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. For those skilled in the art, other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A water level display device, characterized in that, include: Floating component (1) is used to sense changes in water level; Observation unit (2) is used to indicate water level height; A transmission mechanism (3) is connected between the floating component (1) and the observation component (2); The transmission mechanism (3) is configured such that when the floating member (1) moves with the rising water level, it can drive the observation member (2) to move in the same direction, and the moving distance of the observation member (2) is less than the moving distance of the floating member (1).

2. The water level display device according to claim 1, characterized in that, The transmission mechanism (3) includes: A fixed rack (31) extends along the moving direction of the floating member (1); A gear set (32) is connected to the floating member (1). The gear set (32) includes a first gear (321) and a second gear (322) connected to each other. The rotation of the first gear (321) can drive the rotation of the second gear (322). The first gear (321) meshes with the fixed rack (31). The diameter of the first gear (321) is larger than the diameter of the second gear (322). The movable rack (33) is connected to the observation element (2) and meshes with the second gear (322); When the floating component (1) moves upward under the buoyancy of the water, the first gear (321) rotates, thereby driving the second gear (322) to rotate, which in turn pulls the movable rack (33) to move downward relative to the floating component (1), so that the upward movement distance of the observation component (2) is less than the upward movement distance of the floating component (1).

3. The water level display device according to claim 2, characterized in that, The first gear (321) and the second gear (322) are coaxial and connected to each other without rotation. The fixed rack (31) and the movable rack (33) are located on the same side of the rotation axis of the first gear (321) and the second gear (322).

4. The water level display device according to claim 2, characterized in that, It also includes a housing (4), which has a receiving cavity (41), the fixed rack (31) is fixed to the inner wall of the receiving cavity (41), the gear set (32) and the movable rack (33) are disposed in the receiving cavity (41); the top of the housing (4) is provided with a guide hole (42), and the observation element (2) passes through the guide hole (42).

5. The water level display device according to claim 4, characterized in that, The bottom of the receiving cavity (41) is provided with a water inlet (43), and the floating member (1) is housed in the receiving cavity (41); Alternatively, the floating element (1) may be fitted onto the outside of the housing (4).

6. The water level display device according to claim 5, characterized in that, When the floating element (1) is housed in the receiving cavity (41), the inner wall of the receiving cavity (41) forms at least one guide surface (44) for guiding the floating element (1) to move.

7. The water level display device according to claim 4, characterized in that, It also includes a transparent observation cover (5), which is placed on top of the housing (4). The transparent observation cover (5) forms an accommodating space (51) inside the transparent observation cover (5), and the height of the accommodating space (51) is greater than or equal to the maximum length that the observation element (2) can extend from the guide hole (42).

8. The water level display device according to claim 4, characterized in that, One or two guide grooves (45) extending along the moving direction of the floating member (1) are provided on the side wall of the housing (4). At least one shaft end of the gear set (32) forms a positioning protrusion (323) that is slidably connected to the guide groove (45). When one of the guide grooves (45) is opened, the positioning protrusion (323) is disposed on the shaft end of the first gear (321) or the second gear (322); When two guide grooves (45) are opened, the positioning protrusions (323) are respectively disposed on the shaft ends of the first gear (321) and the second gear (322).

9. The water level display device according to claim 2, characterized in that, The side wall of the floating component (1) is provided with a movable groove (11) extending along its own moving direction. The lower end of the movable rack (33) is slidably connected to the movable groove (11) to guide the movable rack (33) and provide clearance space for the movement of the floating component (1).

10. The water level display device according to claim 1, characterized in that, The observation component (2) is a long rod with water level markings.

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