Water level detection device
By using an integrated liquid level tube and float channel design, the problem of high manufacturing difficulty and high cost of water level detection devices for water purifiers has been solved, achieving high-precision and reliable water level detection.
Patent Information
- Application Number
- CN202423241876.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-26
AI Technical Summary
Existing water level detection devices for water purifiers are difficult to manufacture, costly, and lack accurate detection, especially float-type and electrode-type detection methods which are prone to contamination and jamming.
The liquid level tube adopts an integrated design, which includes a high water level section, a low water level section and a connecting section. The high water level float and the low water level float float in their respective channels. The connecting section is used to stop and limit the position of the float, and the floating stability is improved by the slide rail rib and the stop part. The end cap is detachable to prevent water leakage.
It improves the accuracy and reliability of water level detection, reduces manufacturing difficulty and defect rate, saves costs, and reduces the risk of float jamming by simplifying the structure.
Smart Images
Figure CN223623675U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of water purification equipment technology, specifically to a water level detection device. Background Technology
[0002] Most existing water purifiers have tanks or pure water jugs to hold raw water or purified water, and the water level in these tanks needs to be monitored. There are two main monitoring methods: The first uses water level electrodes. Multiple electrodes are placed inside the tank. When the water level rises, the electrodes submerged in the water form a loop with the common terminal at the bottom. The processor determines the water level based on the amount of water in the loop. However, because the water level electrodes are submerged in water and current flows through them, scale easily forms on them, which is difficult to clean. Severe scale buildup can affect the accuracy of the detection. Submerging live components in water poses a safety hazard. The second method uses a float and reed switches to detect water level. The float is placed in a container, and multiple reed switches are placed near the float's travel distance outside the container. The float rises and falls with the water level, and the approximate position of the float is detected by the reed switch closest to it, indirectly determining the water level. However, since the float needs to be immersed in the water in the container, impurities in the water can adhere to the float for a long time, affecting its buoyancy and making the feedback position inaccurate. In addition, the long travel distance of the float increases the risk of it getting stuck, affecting the accuracy of water level detection.
[0003] Therefore, to improve the above-mentioned problems, new water purifiers tend to use external water level detection devices. These devices mainly consist of a level tube and a float. The level tube and the containing device form a communicating vessel structure. Water level detection is achieved by detecting the position of the float within the level tube using a sensor. The structural design of the level tube plays a major role in the reliable buoyancy of the float and the accuracy of water level detection. However, some level tubes on the market are generally of a split design, composed of multiple parts. Each part is separately manufactured and then assembled, which is difficult and costly to manufacture. Assembly errors can also lead to an increased defect rate. Furthermore, a sealing structure is usually required between two connected parts to prevent leakage, but this also increases sealing costs. Utility Model Content
[0004] This application provides a water level detection device to improve the technical problems of high manufacturing difficulty and high manufacturing cost of existing water level detection devices.
[0005] The technical solution adopted in this application is as follows:
[0006] A water level detection device includes a liquid level tube, a high-level float, and a low-level float. The liquid level tube includes a high-level section and a low-level section distributed at both ends, and a connecting section connecting the high-level section and the low-level section. The high-level section, the low-level section, and the connecting section are integrally formed. The high-level section has a high-float channel, along which the high-level float can float. The low-level section has a low-float channel, along which the low-level float can float. The connecting section has a water flow channel connecting the high-float channel and the low-float channel. The connecting section is used to stop and confine the high-level float within the high-float channel and the low-level float within the low-float channel.
[0007] In this water level detection device, a high-level float can float along a high-float channel, and a low-level float can float along a low-float channel. The high-level and low-level floats are used for high and low water level detection, respectively. Compared to existing methods that detect high and low water levels by floating a single float over a long distance, the high-level and low-level floats in this design float within the high-float and low-float channels, respectively. Their floating distances are shorter, resulting in more stable and reliable floating, reducing the risk of being stuck in the level tube, and improving the accuracy and reliability of water level detection. The high-level section, low-level section, and connecting section are integrally formed. With its simple structure and low manufacturing difficulty, it can reduce the risk of increased defect rate due to assembly errors, thereby improving product reliability. Moreover, the sections do not need to be sealed with a sealing structure, which helps to save costs. The connecting section connects the high floating channel and the low floating channel, allowing water to flow from the low floating channel to the high floating channel. On the other hand, it also has the function of limiting the high-level float and the low-level float, stopping and confining the high-level float within the high floating channel and stopping and confining the low-level float within the low floating channel, preventing the high-level float and the low-level float from entering the water flow channel.
[0008] The upper end of the connecting section contracts inward relative to the high water level section to form an upper stop portion, and the connecting section stops and limits the high water level float by the upper stop portion. The lower end of the connecting section contracts inward relative to the low water level section to form a lower stop portion, and the connecting section stops and limits the low water level float by the lower stop portion.
[0009] In this technical solution, the upper end of the connecting section tapers inward relative to the high water level section to form an upper stop, and the lower end of the connecting section tapers inward relative to the low water level section to form a lower stop. The upper stop is used to stop and limit the high water level float, and the lower stop is used to stop and limit the low water level float. The structure is simple. In the preferred embodiment, the connecting section as a whole can be made thinner relative to the high water level section and the low water level section, so that the liquid level tube has a structure that is thick at both ends and thin in the middle. The high water level section and the low water level section have a thick structure, so that the inner diameter of the high floating channel and the low floating channel is increased as much as possible, effectively avoiding the air bubbles generated inside due to the small inner diameter from obstructing the flow of water. The connecting section has a thin structure, which forms a reliable stop and limit for the high water level float and the low water level float.
[0010] The inner walls of the high water level section and the low water level section are respectively provided with protruding slide rail ribs. Multiple slide rail ribs are distributed circumferentially along the liquid level pipe and extend axially along the liquid level pipe. The slide rail ribs provided in the high water level section are used to guide the high water level float to float, and the slide rail ribs provided in the low water level section are used to guide the low water level float to float.
[0011] In this technical solution, the slide rail ribs located in the high water level section guide the high water level float to float stably and reliably, and the slide rail ribs located in the low water level section guide the low water level float to float stably and reliably. This avoids large-area contact between the high water level float and the inner wall of the liquid level tube, reducing the sliding friction generated during the floating process. This makes the high water level float and the low water level float float float more smoothly up and down. In addition, the presence of the slide rail ribs also increases the gap between the high water level float and the inner wall of the liquid level tube, preventing the formation of water films between the high water level float and the inner wall of the liquid level tube. This avoids the adsorption force of the water film increasing the floating resistance of the high water level float and the low water level float, which helps to improve the reliability of water level detection.
[0012] The end of the slide rail rib is provided with a stop part. The projection of the stop part on the horizontal plane is a tapered structure with a wide side and a narrow side. The stop part stops the high water level float or the low water level float through the narrow side.
[0013] In this technical solution, the stop part stops the high-water-level float or the low-water-level float by narrow side, which reduces the contact area between the slide rail rib and the high-water-level float in the high-water-level section and the contact area between the slide rail rib and the low-water-level float in the low-water-level section. This reduces the sliding friction resistance experienced by the high-water-level float and the low-water-level float during the up-and-down floating process, making the floating smoother and more fluid.
[0014] The liquid level tube is open at both ends, and each end is covered by an end cap, which is detachably connected to the liquid level tube.
[0015] In this technical solution, the end cap covers both open ends of the liquid level tube, and the seal between the end cap and the liquid level tube can be used to prevent water leakage from the liquid level tube; the end cap and the liquid level tube are detachably connected, which facilitates internal cleaning, maintenance and other work after the liquid level tube is opened.
[0016] The inner end face of the end cap is provided with a stop rib protruding towards the inside of the liquid level tube. The end cap uses the stop rib to stop and limit the floating position of the high water level float or the low water level float.
[0017] In this technical solution, by setting stop ribs, when the high-level float contacts the end cap at the top of the liquid level tube, it is stopped by the stop ribs, and when the low-level float contacts the end cap at the bottom of the liquid level tube, it is also stopped by the stop ribs. This reduces the contact area between the high-level float and the low-level float and the end cap, effectively preventing the formation of a negative pressure zone between the high-level float, the low-level float and the end cap, thereby preventing the end cap from using the negative pressure zone to adsorb the high-level float and the low-level float.
[0018] The inner end face of the end cap is provided with a recessed groove, and the stop rib is formed in the groove in the shape of a straight line.
[0019] In this technical solution, the stop rib is formed in a straight line in the groove, so that the end cap at the top of the liquid level tube, the stop rib and the high water level float form a peripheral gap, and the end cap at the bottom of the liquid level tube, the stop rib and the low water level float form a peripheral gap. When water is flushed at the top of the high water level float or the bottom of the low water level float, it enters the peripheral gap, which better discharges the air above the high water level float and the air below the low water level float, thereby driving the high water level float and the low water level float to float.
[0020] The end cap is provided with snap-fit protrusions distributed circumferentially, the liquid level tube is provided with a snap-fit part, the snap-fit part is provided with a snap-fit hole adapted to the snap-fit protrusion, and the snap-fit protrusion and the snap-fit hole are snap-fitted together; a guide groove is formed between two adjacent snap-fit parts, and the end cap is provided with a guide rib, the guide rib and the guide groove are slidably engaged.
[0021] In this technical solution, the buckle protrusion and the buckle hole engage to detachably connect the end cap and the liquid level tube, making the end cap easy to install and remove; the guide rib and the guide groove slide together to provide guidance for the connection between the end cap and the liquid level tube, further improving the ease of installation and removal.
[0022] The water level detection device includes a high water level sensor for identifying the floating position of the high water level float and a low water level sensor for identifying the floating position of the low water level float; the outer side of the liquid level tube is provided with a mounting groove for engaging the high water level sensor and the low water level sensor.
[0023] In this technical solution, the high water level sensor and the low water level sensor are snapped into the mounting groove, which facilitates disassembly and replacement in case of failure or damage, so as to ensure the reliable use of the water level detection device.
[0024] The high water level section has an exhaust port at the top that connects the high floating channel to the outside, and the low water level section has a water inlet at the bottom that connects the low floating channel to the outside.
[0025] In this technical solution, when water enters the level tube, the internal gas is squeezed out from the exhaust port, thus avoiding excessive internal gas pressure that could interfere with the vertical floating distance of the high-level and low-level floats.
[0026] Due to the adoption of the above technical solution, the technical effects achieved by this application are as follows: In the water level detection device provided by this application, a high-level float is buoyantly disposed within a high-floating channel, and a low-level float is buoyantly disposed within a low-floating channel. The high-level and low-level floats are used for high-level and low-level detection, respectively. Compared to the existing method of detecting low and high water levels by a single float floating over a long distance, the high-level and low-level floats in this solution have shorter floating distances, resulting in more stable and reliable floating, reducing the risk of being stuck in the level tube, and helping to improve the accuracy and reliability of water level detection; the high-level section, low-level section, and continuous... The integrated molding design of the connecting sections results in a simple structure and low manufacturing difficulty, reducing the rate of defective products caused by assembly errors and thus improving product reliability. Moreover, the sections do not require sealing structures, which helps save costs. The connecting section connects the high-float channel and the low-float channel, allowing water to flow upward from the low-float channel to the high-float channel. On the other hand, it also limits the high-level and low-level floats, stopping and confining the high-level float within the high-float channel and the low-level float within the low-float channel, preventing them from entering the water flow channel. Attached Figure Description
[0027] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:
[0028] Figure 1 This is an isometric view of the water level detection device provided in the embodiments of this application;
[0029] Figure 2 This is a front view of the water level detection device provided in the embodiments of this application;
[0030] Figure 3 for Figure 2 Cross-sectional view at point AA;
[0031] Figure 4 for Figure 2 Cross-sectional view at point BB;
[0032] Figure 5 This is a schematic diagram of the liquid level tube provided in the embodiments of this application;
[0033] Figure 6 This is a schematic diagram of the end cap structure provided in an embodiment of this application;
[0034] Figure 7 A cross-section of the water level detection device provided in the embodiments of this application. Figure 1 ;
[0035] Figure 8 for Figure 7 Enlarged view of the structure at point C;
[0036] Figure 9 A cross-section of the water level detection device provided in the embodiments of this application. Figure 2 ;
[0037] Figure 10 A cross-section of the water level detection device provided in the embodiments of this application. Figure 3 ;
[0038] Figure 11 for Figure 10 Enlarged view of the structure at point D.
[0039] List of components and reference numerals:
[0040] 1 Liquid level pipe, 11 High water level section, 111 Vent port, 12 Low water level section, 121 Water inlet, 13 Connecting section, 131 Upper stop, 132 Lower stop, 14 High floating channel, 15 Low floating channel, 16 Water flow channel, 17 Slide rail rib, 171 Stop, 18 Snap-fit part, 181 Snap-hole, 19 Guide slide groove, 100 Mounting groove;
[0041] 2. High-water-level floats;
[0042] 3. Low water level float;
[0043] 4. End caps, 41. Stop ribs, 42. Grooves, 43. Buckle protrusions, 44. Guide ribs;
[0044] 5. High water level sensing element;
[0045] 6. Low water level sensor. Detailed Implementation
[0046] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.
[0047] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.
[0048] Furthermore, it should be understood in the description of this application that the terms "upper," "lower," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," "lateral," and "longitudinal," 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 application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0049] In this application, unless otherwise expressly 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 application according to the specific circumstances.
[0050] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., 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 application. 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 can be combined in any suitable manner in one or more embodiments or examples.
[0051] In the embodiments of this application, a water level detection device is provided. For ease of explanation and understanding, the following descriptions are based on the illustrated product structure. Of course, those skilled in the art will understand that the above structure is merely a specific example and illustrative illustration, and does not constitute a specific limitation on the technical solution provided in this application.
[0052] Reference Figures 1 to 11As shown, the water level detection device provided in this application includes a liquid level pipe 1, a high-level float 2, and a low-level float 3. The liquid level pipe 1 includes a high-level section 11 and a low-level section 12 distributed at both ends, and a connecting section 13 connecting the high-level section 11 and the low-level section 12. The high-level section 11, the low-level section 12, and the connecting section 13 are integrally formed. The high-level section 11 is provided with a high-floating channel 14, and the high-level float 2 can float along the high-floating channel 14. The low-level section 12 is provided with a low-floating channel 15, and the low-level float 3 can float along the low-floating channel 15. The connecting section 13 is provided with a water flow channel 16 connecting the high-floating channel 14 and the low-floating channel 15. The connecting section 13 is used to stop and limit the high-level float 2 within the high-floating channel 14 and the low-level float 3 within the low-floating channel 15.
[0053] The connecting section 13 is used to stop and limit the high-level float 2 within the high-float channel 14. This means that when the water level in the level tube 1 has not reached the high-level section 11, the high-level float 2 slides down to the bottom of the high-float channel 14 under gravity. At this time, the connecting section 13 stops and limits the high-level float 2 to prevent it from continuing to move downward. The connecting section 13 is used to stop and limit the low-level float 3 within the low-float channel 15. This means that when the water level in the level tube 1 is not lower than the low-level section 12, the low-level float 3 floats up to the highest point of the low-float channel 15. At this time, the connecting section 13 stops and limits the low-level float 3 to prevent it from continuing to move upward.
[0054] The water level detection device provided in this application has a high-level float 2 that floats along the high-level floating channel 14 and a low-level float 3 that floats along the low-level floating channel 15. The high-level float 2 and the low-level float 3 are used for high-level and low-level water level detection, respectively. Compared to existing methods that detect low and high water levels by floating a single float over a long distance, the high-level float 2 and the low-level float 3 in this solution float within the high-level floating channel 14 and the low-level floating channel 15, respectively. Their floating distances are shorter, resulting in more stable and reliable floating, reducing the risk of being stuck by the level tube 1, and helping to improve the accuracy and reliability of water level detection. The high-level section 11, the low-level section 12, and the connecting section 13 are integrally formed. The structure is simple and easy to manufacture, which reduces the risk of increased defect rate due to assembly errors, thereby improving product reliability. Moreover, the sections do not need to be sealed by a sealing structure, which helps to save costs. The connecting section 13 connects the high floating channel 14 and the low floating channel 15, allowing water to flow from the low floating channel 15 to the high floating channel 14. On the other hand, it also limits the high water level float 2 and the low water level float 3, stopping and confining the high water level float 2 within the high floating channel 14 and the low water level float 3 within the low floating channel 15, preventing the high water level float 2 and the low water level float 3 from entering the water flow channel 16.
[0055] Regarding the method by which the connecting section 13 provides a stop and limit function for the high-water-level float 2 and the low-water-level float 3, in a preferred embodiment, as follows: Figure 2 , Figure 5 , Figure 7 and Figure 9 As shown, the upper end of the connecting section 13 contracts inward relative to the high water level section 11 to form an upper stop portion 131, and the connecting section 13 stops and limits the high water level float 2 through the upper stop portion 131. The lower end of the connecting section 13 contracts inward relative to the low water level section 12 to form a lower stop portion 132, and the connecting section 13 stops and limits the low water level float 3 through the lower stop portion 132. In this technical solution, the upper and lower ends of the connecting section 13 are tapered, resulting in a simple structure. In a preferred embodiment, the connecting section 13 can be made thinner overall relative to the high water level section 11 and the low water level section 12. The diameter of the connecting section 13 is the same everywhere, making the liquid level tube 1 have a structure that is thick at both ends and thin in the middle. The high water level section 11 and the low water level section 12 have a thick structure, which makes the inner diameter of the high floating channel 14 and the low floating channel 15 as large as possible, effectively avoiding the air bubbles generated inside due to the small inner diameter from obstructing the flow of water. The connecting section 13 has a thin structure, which forms a reliable stop and limit for the high water level float 2 and the low water level float 3.
[0056] In other embodiments, the connecting section 13 can also act as a stop and limit for the high-water-level float 2 and the low-water-level float 3 in other ways. For example, the high-water-level section, the low-water-level section and the connecting section can be set to have the same diameter, and limiting protrusions can be provided at the top and bottom of the water flow channel of the connecting section respectively. The limiting protrusion at the top stops and limits the high-water-level float 2, and the limiting protrusion at the bottom stops and limits the low-water-level float 3.
[0057] As a preferred embodiment of this application, such as Figure 3 , Figure 4 and Figure 7 As shown, protruding slide rail ribs 17 are respectively provided on the inner walls of the high water level section 11 and the low water level section 12. Multiple slide rail ribs 17 are distributed circumferentially along the liquid level pipe 1 and extend axially along the liquid level pipe 1. The slide rail ribs 17 in the high water level section 11 are used to guide the high water level float 2 to float, and the slide rail ribs 17 in the low water level section 12 are used to guide the low water level float 3 to float. In specific implementation, the slide rail ribs 17 in the high water level section 11 do not strictly contact the high water level float 2, and the slide rail ribs 17 in the low water level section 12 do not strictly contact the low water level float 3. A certain gap is maintained between the slide rail ribs 17 and the high water level float 2 and the low water level float 3, respectively, to achieve dynamic limiting and ensure the smooth floating of the high water level float 2 and the low water level float 3. Those skilled in the art will understand that the slide rail rib 17 located in the high water level section 11 can guide the high water level float 2 to float stably and reliably, and the slide rail rib 17 located in the low water level section 12 can guide the low water level float 3 to float stably and reliably. This avoids large-area contact between the high water level float 2 and the low water level float 3 and the inner wall of the liquid level tube 1, reducing the sliding friction generated during the floating process, and making the high water level float 2 and the low water level float 3 float up and down more smoothly. In addition, the presence of the slide rail rib 17 also increases the gap between the high water level float 2 and the low water level float 3 and the inner wall of the liquid level tube 1, preventing the formation of a water film between the high water level float 2 and the low water level float 3 and the inner wall of the liquid level tube 1, and avoiding the increase in the floating resistance of the high water level float 2 and the low water level float 3 due to the adsorption force of the water film, which helps to improve the reliability of water level detection.
[0058] Furthermore, such as Figure 3 , Figure 4 and Figure 7As shown, the end of the slide rail rib 17 is provided with a stop portion 171. The projection of the stop portion 171 on the horizontal plane is a tapered structure with a wide side and a narrow side. The stop portion 171 stops the high-water level float 2 or the low-water level float 3 through the narrow side. In this technical solution, the stop portion 171 stops the high-water level float 2 or the low-water level float 3 through the narrow side, reducing the contact area between the slide rail rib 17 and the high-water level float 2 in the high-water level section 11 and the contact area between the slide rail rib 17 and the low-water level float 3 in the low-water level section 12. This reduces the sliding friction resistance experienced by the high-water level float 2 and the low-water level float 3 during their up-and-down floating, resulting in smoother and more fluid floating. In specific implementation, a cutting angle can be provided at the end of the slide rail rib 17, thereby forming a pointed stop portion 171. The pointed tip of the pointed structure stops the high-water level float 2 and the low-water level float 3, reducing friction resistance.
[0059] To facilitate the molding of the liquid level tube 1, in a preferred embodiment, such as Figure 1 and Figure 7 As shown, the liquid level tube 1 has open ends, each covered by an end cap 4, which is detachably connected to the liquid level tube 1. The top opening of the liquid level tube 1 is the opening of the high floating channel 14, and the bottom opening is the opening of the low floating channel 15. The top end cap 4 covers the opening of the high floating channel 14, and the bottom end cap 4 covers the opening of the low floating channel 15. The seal between the end cap 4 and the liquid level tube 1 can prevent leakage. For example, at least one sealing ring can be provided between the end cap 4 and the liquid level tube 1. The detachable connection between the end cap 4 and the liquid level tube 1 facilitates internal cleaning, maintenance, and other work after opening the liquid level tube 1.
[0060] In a preferred embodiment, such as Figure 1 and Figure 6 As shown, the inner end face of the end cap 4 is provided with a stop rib 41 protruding towards the interior of the liquid level tube 1. The end cap 4 uses the stop rib 41 to stop and limit the floating position of the high water level float 2 or the low water level float 3. Specifically, as shown... Figure 10 and Figure 11 As shown, when the high-level float 2 rises to its highest point, it is stopped by the stop rib 41 on the top end cap 4 of the liquid level pipe 1, reducing the contact area between the high-level float 2 and the end cap 4. This effectively prevents the formation of a negative pressure zone between the high-level float 2 and the end cap 4, thus preventing the end cap 4 from using the negative pressure zone to absorb the high-level float 2. Consequently, when the liquid level drops, the high-level float 2 can promptly and accurately follow the liquid level downwards. Figure 7 and Figure 8As shown, when the low water level float 3 floats down to the lowest point, it is stopped by the stop rib 41 on the bottom end cap 4 of the liquid level pipe 1, which reduces the contact area between the low water level float 3 and the end cap 4, effectively preventing the formation of a negative pressure zone between the low water level float 3 and the end cap 4, thereby preventing the end cap 4 from using the negative pressure zone to adsorb the low water level float 3. As a result, when the liquid level rises, the low water level float 3 can rise to the surface in a timely and accurate manner.
[0061] Furthermore, such as Figure 6 , Figure 8 and Figure 11 As shown, the inner end face of the end cap 4 is provided with a recessed groove 42, and the stop rib 41 is formed in a straight line within the groove 42. The stop rib 41 is formed in a straight line within the groove 42, so that the end cap 4 at the top of the liquid level pipe 1, the stop rib 41 and the high water level float 2 form a peripheral gap, and the end cap 4 at the bottom of the liquid level pipe 1, the stop rib 41 and the low water level float 3 form a peripheral gap. When water flushes the top of the high water level float 2 or the bottom of the low water level float 3, it enters the peripheral gap, which better discharges the air above the high water level float 2 and the air below the low water level float 3, thereby driving the high water level float 2 and the low water level float 3 to float. When the stop rib 41 stops the low water level float 3, water flows from both sides into the space between the low water level float 3 and the groove 42, preventing the end cap 4 from adsorbing the low water level float 3, and the water flow forms a lifting buoyancy on the low water level float 3, so that the low water level float 3 can float better.
[0062] In a preferred embodiment, such as Figure 1 , Figure 5 and Figure 6 As shown, the end cap 4 has circumferentially distributed snap-fit protrusions 43, and the liquid level tube 1 has a snap-fit portion 18. The snap-fit portion 18 has snap-fit holes 181 that fit the snap-fit protrusions 43, and the snap-fit protrusions 43 engage with the snap-fit holes 181. A guide groove 19 is formed between two adjacent snap-fit portions 18, and the end cap 4 has a guide rib 44, which slides with the guide groove 19. In this technical solution, the snap-fit protrusions 43 and the snap-fit holes 181 detachably connect the end cap 4 and the liquid level tube 1, making the end cap 4 easy to install and remove. The guide rib 44 and the guide groove 19 slide together, providing guidance for the connection between the end cap 4 and the liquid level tube 1, further improving the ease of installation and removal. In other embodiments, the end cap 4 and the liquid level tube 1 can also be connected in other suitable ways, such as threaded connection, screw connection, plug connection, etc.
[0063] As a preferred embodiment of this application, such as Figures 1 to 4 as well as Figures 7 to 10As shown, the water level detection device includes a high-water-level sensor 5 for identifying the floating position of the high-water-level float 2 and a low-water-level sensor 6 for identifying the floating position of the low-water-level float 3. The outer side of the liquid level tube 1 is provided with a mounting groove 100 for engaging the high-water-level sensor 5 and the low-water-level sensor 6. As the liquid level in the liquid level tube 1 changes, the high-water-level float 2 and the low-water-level float 3 also move up and down. Due to magnetic attraction, the reed switches inside the high-water-level float 2 and the low-water-level float 3 are magnetically attracted, causing the resistance of the high-water-level sensor 5 and the low-water-level sensor 6 to change linearly, thereby achieving water level detection. The high-water-level sensor 5 and the low-water-level sensor 6 are engaged in the mounting groove 100, facilitating disassembly and replacement in case of malfunction or damage, ensuring the reliable operation of the water level detection device. Specifically, elastic buckles can be set in the mounting groove 100, and buckles can be set in the high water level sensor 5 and the low water level sensor 6 respectively. After the high water level sensor 5 and the low water level sensor 6 enter the mounting groove 100 respectively, the elastic buckles are engaged in the buckle holes 181 to prevent the high water level sensor 5 and the low water level sensor 6 from falling off.
[0064] Regarding the detection methods of water level detection devices, such as Figure 7 , Figure 9 and Figure 10 The image shows the status of the water level detection device under different water level conditions. For example, ... Figure 7 As shown, when the liquid level tube 1 is empty, the low-level float 3 falls to the bottom of the low-level floating channel 15, and the high-level float 2 falls to the bottom of the high-level floating channel 14. At this time, the high-level sensor 5 cannot detect the high-level float 2, and the low-level sensor 6 cannot detect the low-level float 3. The system detects that there is no signal connection between the high and low levels, and the system determines that the state is empty. Figure 9 As shown, when the water level in the level tube 1 is low, the low-level float 3 rises with the liquid level and floats to the top of the low-level floating channel 15. At this time, the low-level sensor 6 senses the low-level float 3, while the high-level float 2 remains at the bottom of the high-level floating channel 14, and the high-level sensor 5 cannot sense the high-level float 2. Therefore, the system determines the water level to be low. Figure 10 As shown, when the water level in the liquid level tube 1 is below the high water level float 2, the high water level float 2 is detected and identified by the high water level sensor 5, and the high water level sensor 5 is turned on. At the same time, the low water level sensor 6 is also detected and turned on. At this time, the system judges that the water level is full.
[0065] As a preferred embodiment of this application, such as Figure 1 and Figure 7As shown, the top of the high water level section 11 is provided with an exhaust port 111 that connects the high floating channel 14 to the outside, and the bottom of the low water level section 12 is provided with a water inlet 121 that connects the low floating channel 15 to the outside. In this technical solution, when water enters the liquid level pipe 1 through the water inlet 121, the internal gas is squeezed out from the exhaust port 111 at the top, avoiding excessive internal gas pressure in the liquid level pipe 1 that would interfere with the vertical floating distance of the high water level float 2 and the low water level float 3.
[0066] For any parts not mentioned in this application, existing technologies may be used or referenced.
[0067] 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.
[0068] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.
Claims
1. A water level detection device, characterized in that, The device includes a level tube, a high-level float, and a low-level float. The level tube includes a high-level section and a low-level section distributed at both ends, and a connecting section connecting the high-level section and the low-level section. The high-level section, the low-level section, and the connecting section are integrally formed. The high-level section has a high-float channel, along which the high-level float can float. The low-level section has a low-float channel, along which the low-level float can float. The connecting section has a water flow channel connecting the high-float channel and the low-float channel. The connecting section is used to stop and confine the high-level float within the high-float channel and the low-level float within the low-float channel.
2. The water level detection device according to claim 1, characterized in that, The upper end of the connecting section contracts inward relative to the high water level section to form an upper stop portion, and the connecting section stops and limits the high water level float by the upper stop portion. The lower end of the connecting section contracts inward relative to the low water level section to form a lower stop portion, and the connecting section stops and limits the low water level float by the lower stop portion.
3. The water level detection device according to claim 1, characterized in that, The inner walls of the high water level section and the low water level section are respectively provided with protruding slide rail ribs. Multiple slide rail ribs are distributed circumferentially along the liquid level pipe and extend axially along the liquid level pipe. The slide rail ribs provided in the high water level section are used to guide the high water level float to float, and the slide rail ribs provided in the low water level section are used to guide the low water level float to float.
4. The water level detection device according to claim 3, characterized in that, The end of the slide rail rib is provided with a stop part. The projection of the stop part on the horizontal plane is a tapered structure with a wide side and a narrow side. The stop part stops the high water level float or the low water level float through the narrow side.
5. The water level detection device according to claim 1, characterized in that, The liquid level tube is open at both ends, and each end is covered by an end cap, which is detachably connected to the liquid level tube.
6. The water level detection device according to claim 5, characterized in that, The inner end face of the end cap is provided with a stop rib protruding towards the inside of the liquid level tube. The end cap uses the stop rib to stop and limit the floating position of the high water level float or the low water level float.
7. The water level detection device according to claim 6, characterized in that, The inner end face of the end cap is provided with a recessed groove, and the stop rib is formed in the groove in the shape of a straight line.
8. The water level detection device according to claim 5, characterized in that, The end cap is provided with snap-fit protrusions distributed circumferentially, the liquid level tube is provided with a snap-fit part, the snap-fit part is provided with a snap-fit hole adapted to the snap-fit protrusion, and the snap-fit protrusion and the snap-fit hole are engaged in a snap-fit cooperation; A guide groove is formed between two adjacent snap-fit parts, and the end cover is provided with a guide rib, which slides in conjunction with the guide groove.
9. The water level detection device according to claim 1, characterized in that, The water level detection device includes a high water level sensor for identifying the floating position of the high water level float and a low water level sensor for identifying the floating position of the low water level float; the outer side of the liquid level tube is provided with a mounting groove for engaging the high water level sensor and the low water level sensor.
10. The water level detection device according to claim 1, characterized in that, The high water level section has an exhaust port at the top that connects the high floating channel to the outside, and the low water level section has a water inlet at the bottom that connects the low floating channel to the outside.