Anti-interference liquid level sensor

Abstract

The utility model relates to the technical field of liquid level sensors, and discloses an anti-interference liquid level sensor which comprises a liquid level sensor body, a connecting line is fixedly connected to the top end of the liquid level sensor body, a main body frame is fixedly connected to the circular ring face of the liquid level sensor body in a sleeved mode, and strip rods are fixedly connected to the two ends of the main body frame. A mounting hole is formed in the top of the main body frame in a penetrating mode, a shaft rod is rotationally connected to the main body frame, through the overall design, the signal output stability can be remarkably improved, and by means of a fluctuation attenuation system in the auxiliary device, the liquid level fluctuation duration time can be greatly shortened; when the liquid level fluctuates, the system can actively absorb and dissipate fluctuation energy, so that the liquid level quickly recovers a stable state, and the situation that a sensor frequently triggers signals due to liquid level fluctuation is reduced; compared with the problem of unstable measured values in the prior art, by means of the design, the stability of output signals of the sensor can be improved, and reliable data support is provided for a system to accurately judge the liquid level state.

Description

Technical Field

[0001] This utility model relates to the field of liquid level sensor technology, specifically to an anti-interference liquid level sensor. Background Technology

[0002] In modern fields such as industrial automation, smart water management, and environmental monitoring, liquid level sensors, as core equipment for liquid level monitoring, directly affect the stability and safety of system operation through their measurement accuracy and reliability. In the petrochemical industry, accurate measurement of storage tank levels is crucial for ensuring smooth production processes and preventing material spills that could lead to safety accidents. In wastewater treatment plants, accurate monitoring of aeration tank levels helps optimize treatment processes and improve wastewater treatment efficiency. In smart home scenarios, water tank level monitoring provides data support for household water management.

[0003] Although liquid level sensors are widely used, their performance is still limited by various factors under actual working conditions. When the liquid level in a container is close to the sensor's measurement height, factors such as liquid flow, equipment vibration, and changes in pipeline pressure can easily cause liquid level fluctuations. This dynamic fluctuation can cause the liquid level sensor to prematurely detect the liquid signal, resulting in a measured value higher than the actual liquid level and causing misjudgment. Taking the equalization tank of a sewage treatment plant as an example, the water flow impact generated by the start and stop of the pumps can cause drastic fluctuations in the liquid level. If the liquid level sensor misjudges a high liquid level, it can lead to overload operation of subsequent treatment equipment and even equipment failure.

[0004] Furthermore, continuous fluctuations in liquid level cause frequent signal triggering by the sensor, resulting in unstable output measurements that severely interfere with the system's accurate judgment of the liquid level. Most liquid level sensors on the market currently lack effective anti-interference mechanisms and cannot quickly filter out false signals caused by fluctuations. At the same time, existing technologies do not yet include dedicated components to assist liquid level sensors in shortening fluctuation time and achieving rapid and stable monitoring. In elevated water tanks of urban water supply systems, liquid level fluctuations caused by changes in water flow during peak water usage periods often make it difficult for liquid level sensors to output reliable data, thereby affecting the accuracy of water supply scheduling and causing problems such as water waste or localized water shortages.

[0005] Therefore, developing new technologies and auxiliary components that can overcome liquid level fluctuation interference and improve measurement stability has become an important issue that urgently needs to be addressed in the field of liquid level sensors.

[0006] Therefore, we propose an anti-interference liquid level sensor to solve the above problems. Summary of the Invention

[0007] (a) Technical problems to be solved

[0008] In view of the shortcomings of the prior art, this utility model provides an anti-interference liquid level sensor to solve the problems mentioned in the background art.

[0009] (II) Technical Solution

[0010] To achieve the above objectives, this utility model provides the following technical solution: an anti-interference liquid level sensor, comprising a liquid level sensor, a connecting wire fixedly connected to the top of the liquid level sensor, a main frame fixedly sleeved on the annular surface of the liquid level sensor, rods fixedly connected to both ends of the main frame, an installation hole through the top of the main frame, a shaft rotatably connected to the main frame, and a swing crossbar fixedly connected to the shaft.

[0011] Preferably, the bottom surface of the main frame is symmetrically and fixedly connected with an arc-shaped connecting rod, and the end of the arc-shaped connecting rod away from the main frame is fixedly connected with a flow stabilizer cylinder, and the flow stabilizer cylinder has through holes at equal intervals.

[0012] Preferably, a float is slidably connected inside the flow stabilizer, a transmission rod is rotatably connected to the inner cavity of the float, a sleeve is fixedly connected to the transmission rod, and the sleeve is rotatably connected to the bar.

[0013] Preferably, an auxiliary plate is fixedly connected to the swing crossbar, and a magnet is fixedly connected to the auxiliary plate.

[0014] Preferably, a Hall switch is fixedly connected to the main frame.

[0015] Preferably, the arc-shaped connecting rod, the flow stabilizer, the through hole, the float, the transmission rod, and the sleeve are arranged as a set, and a total of two sets are provided.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, this utility model provides an anti-interference liquid level sensor, which has the following beneficial effects:

[0018] 1. Through its overall design, this utility model offers the following advantages:

[0019] Significantly improves signal output stability: With the help of the fluctuation attenuation system in the auxiliary device, the duration of liquid level fluctuations can be greatly shortened; when the liquid level fluctuates, the system can actively absorb and dissipate the fluctuation energy, so that the liquid level can quickly return to a stable state, thereby reducing the frequent triggering of signals by the sensor due to liquid level fluctuations; compared with the problem of unstable measurement values ​​in the existing technology, this design can improve the stability of the sensor output signal, providing reliable data support for the system to accurately judge the liquid level status.

[0020] Optimize monitoring performance under complex operating conditions: In complex operating scenarios such as petrochemical storage tanks and sewage treatment regulating ponds, the device's comprehensive anti-interference mechanism can effectively cope with liquid level fluctuations caused by various factors such as pipeline pressure changes and pump start-up and shutdown. Compared with existing liquid level sensors that are not equipped with dedicated auxiliary components, this design can maintain stable monitoring performance under complex operating conditions, avoid equipment failures or abnormal process operation caused by liquid level misjudgment, and improve the safety and stability of system operation.

[0021] 2. The float design of this utility model brings the following benefits to the overall operation:

[0022] Highly efficient in shortening the duration of solution fluctuations: With its unique floating design, the float can closely conform to the surface of liquid level fluctuations. When the solution fluctuates, the float can absorb the fluctuation energy through its own shaking and swaying, forming a reverse damping force. The above force can quickly counteract the kinetic energy of the solution fluctuations, greatly shortening the originally long duration of liquid level fluctuations. This creates a fast and stable monitoring environment for the liquid level sensor. Compared with traditional methods, it can reduce the duration of solution fluctuations and significantly improve the efficiency of liquid level monitoring.

[0023] Precisely reduces the probability of sensor misjudgment: Since the float effectively hinders solution fluctuations, it avoids irregular fluctuations in the liquid level near the sensor measurement area caused by fluctuations, thereby preventing the sensor from detecting the water body in advance, reducing the occurrence of false trigger signals, making the measurement results more accurately reflect the actual liquid level height, and improving the reliability of monitoring data. Attached Figure Description

[0024] Figure 1 This is a structural diagram of the main body of this utility model;

[0025] Figure 2 The following are structural diagrams of the flow stabilizer, through hole, and float in this utility model;

[0026] Figure 3 This is a front view of the flow stabilizer cylinder after it has been cut open in this utility model.

[0027] Figure 4 The following are structural diagrams of the main frame, shaft, and auxiliary plates in this utility model;

[0028] Figure 5 The following are structural diagrams of the central shaft, auxiliary plate, and magnet of this utility model;

[0029] Figure 6 The diagram shows the relevant structures of the central shaft, auxiliary plate, and Hall switch of this utility model.

[0030] In the picture:

[0031] 1. Liquid level sensor; 2. Connecting wire; 3. Main frame; 31. Bar; 4. Mounting hole; 5. Shaft; 6. Swinging crossbar; 7. Arc-shaped connecting rod; 8. Flow stabilizer; 9. Through hole; 10. Float; 11. Transmission rod; 12. Sleeve; 13. Auxiliary plate; 14. Magnet; 15. Hall switch. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Example

[0034] Please refer to Figures 1 to 6 As shown:

[0035] An anti-interference liquid level sensor includes a liquid level sensor 1, a connecting wire 2 fixedly connected to the top of the liquid level sensor 1, a main frame 3 fixedly sleeved on the annular surface of the liquid level sensor 1, bars 31 fixedly connected to both ends of the main frame 3, a mounting hole 4 through the top of the main frame 3, a shaft 5 rotatably connected to the main frame 3, a swing crossbar 6 fixedly connected to the shaft 5, an arc-shaped connecting rod 7 symmetrically fixedly connected to the bottom surface of the main frame 3, a flow stabilizer 8 fixedly connected to the end of the arc-shaped connecting rod 7 away from the main frame 3, through holes 9 equidistantly opened on the flow stabilizer 8, a float 10 slidably connected inside the flow stabilizer 8, a transmission rod 11 rotatably connected to the inner cavity of the float 10, a sleeve 12 fixedly connected to the transmission rod 11, the sleeve 12 rotatably connected to the bar 31, an auxiliary plate 13 fixedly connected to the swing crossbar 6, a magnet 14 fixedly connected to the auxiliary plate 13, and a Hall switch 15 fixedly connected to the main frame 3.

[0036] in:

[0037] Mounting hole 4 is used to assist in the installation of the liquid level sensor 1 by hanging or threading.

[0038] The arc-shaped connecting rod 7, the flow stabilizer 8, the through hole 9, the float 10, the transmission rod 11, and the sleeve 12 form a group, and there are two groups in total.

[0039] When the water surface is fluctuating, the fluctuating water will first hit the flow stabilizer 8. Therefore, the degree of fluctuation of the water surface can be reduced by the obstruction of the flow stabilizer 8 and the friction between the float 10 and the inner wall of the flow stabilizer 8.

[0040] Sleeve 12 is used in conjunction with bar 31.

[0041] Magnet 14 and Hall switch 15 are used together, and both magnet 14 and Hall switch 15 are electrically connected to the main controller. Specifically, in the initial state, magnet 14 and Hall switch 15 are on the same straight line, and liquid level sensor 1 is in a non-working state. When the relative positions of magnet 14 and Hall switch 15 are separated indirectly through float 10 due to water surface fluctuations, that is, when magnet 14 and Hall switch 15 are no longer in the same state, liquid level sensor 1 is in a pre-working state. Furthermore, when magnet 14 and Hall switch 15 are aligned on the same straight line again, and this state is maintained for a certain period of time, liquid level sensor 1 begins to monitor and provide feedback on the stable water surface.

[0042] Working principle:

[0043] In the initial state: the bottom of the liquid level sensor 1 is slightly higher than the bottom surface of the float 10, the swing crossbar 6 is in a horizontal state, and the magnet 14 and the Hall switch 15 are on the same straight line.

[0044] In use, the liquid level sensor 1 and the entire device are first fixed at the required liquid level monitoring position through the mounting holes 4 on the main frame 3. As the solution rises in the filling tank, it gradually approaches the float 10 in the flow stabilizer 8. Furthermore, during the fluctuation of the solution, the solution contacts and acts on the bottom surface of the float 10 through the through holes 9 on the flow stabilizer 8. Under the action of the solution, the float 10 moves up and down in the flow stabilizer 8, thereby reducing the force of the fluctuation. It is known that the magnet 14 and the Hall switch 15 are used together, and both the magnet 14 and the Hall switch 15 are electrically connected to the main controller. Specifically, in the initial state, the magnet 14 and the Hall switch 15 are on the same straight line, and the liquid level sensor 1 is in a non-operating state. When the relative positions of magnet 14 and Hall switch 15 are indirectly separated by float 10 due to water surface fluctuations, that is, when magnet 14 and Hall switch 15 are no longer in the same state, level sensor 1 is in pre-working state. Furthermore, when magnet 14 and Hall switch 15 are aligned again and this state is maintained for a certain period of time, level sensor 1 begins to monitor and provide feedback on the stable water surface. Therefore, in the state of water surface fluctuation, the two sets of floats 10 will cause the swinging crossbar 6 to rotate around the shaft 5 as the axis of rotation. At this time, level sensor 1 will not perform water level detection. Only when the two sets of floats 10 are stable on the solution surface and the swinging crossbar 6 is in a horizontal state will level sensor 1 monitor and provide feedback on the solution height.

[0045] Furthermore, through overall design, the stability of signal output can be significantly improved: with the help of the fluctuation attenuation system in the auxiliary device, the duration of liquid level fluctuations can be greatly shortened; when the liquid level fluctuates, the system can actively absorb and dissipate the fluctuation energy, so that the liquid level can quickly return to a stable state, thereby reducing the frequent triggering of signals by the sensor due to liquid level fluctuations; compared with the problem of unstable measurement values ​​in the existing technology, this design can improve the stability of the sensor output signal, providing reliable data support for the system to accurately judge the liquid level status;

[0046] In complex operating scenarios such as petrochemical storage tanks and sewage treatment regulating ponds, the device's comprehensive anti-interference mechanism can effectively cope with liquid level fluctuations caused by various factors such as pipeline pressure changes and pump start-up and shutdown. Compared with the liquid level sensor 1 in the existing technology that is not equipped with dedicated auxiliary components, this design can maintain stable monitoring performance under complex operating conditions, avoid equipment failure or process operation abnormalities caused by liquid level misjudgment, and improve the safety and stability of system operation.

[0047] Furthermore, the design of the float 10 can efficiently shorten the duration of solution fluctuations. With its unique floating design, the float 10 can closely adhere to the surface of the liquid level fluctuation. When the solution fluctuates, the float 10 can absorb the fluctuation energy through its own shaking and swaying, forming a reverse damping force. The above force can quickly offset the kinetic energy of the solution fluctuation, greatly shortening the originally long duration of liquid level fluctuations. This creates a fast and stable monitoring environment for the liquid level sensor 1. Compared with traditional methods, the solution fluctuation time can be reduced, significantly improving the efficiency of liquid level monitoring.

[0048] Furthermore, since the float 10 effectively hinders solution fluctuations, it avoids irregular fluctuations in the liquid level near the sensor measurement area caused by fluctuations, thereby preventing the sensor from detecting the water body in advance, reducing the occurrence of false triggering signals, making the measurement results more realistically reflect the actual liquid level height, and improving the reliability of the monitoring data.

[0049] Please refer to the above work process. Figures 1 to 6 .

[0050] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0051] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An anti-interference liquid level sensor, comprising a liquid level sensor (1), characterized in that: The liquid level sensor (1) is fixedly connected to a connecting wire (2) at its top end. The liquid level sensor (1) is fixedly fitted with a main frame (3) on its annular surface. The main frame (3) is fixedly connected to two ends with a bar (31). The main frame (3) has a through-hole (4) at its top. The main frame (3) is rotatably connected to a shaft (5). The shaft (5) is fixedly connected to a swing crossbar (6).

2. The anti-interference liquid level sensor according to claim 1, characterized in that: The bottom surface of the main frame (3) is symmetrically and fixedly connected with an arc-shaped connecting rod (7). The end of the arc-shaped connecting rod (7) away from the main frame (3) is fixedly connected with a flow stabilizer (8). The flow stabilizer (8) has through holes (9) at equal intervals.

3. The anti-interference liquid level sensor according to claim 2, characterized in that: A float (10) is slidably connected inside the flow stabilizer (8). A transmission rod (11) is rotatably connected to the inner cavity of the float (10). A sleeve (12) is fixedly connected to the transmission rod (11). The sleeve (12) is rotatably connected to the bar (31).

4. The anti-interference liquid level sensor according to claim 1, characterized in that: An auxiliary plate (13) is fixedly connected to the swing crossbar (6), and a magnet (14) is fixedly connected to the auxiliary plate (13).

5. The anti-interference liquid level sensor according to claim 1, characterized in that: A Hall switch (15) is fixedly connected to the main frame (3).

6. The anti-interference liquid level sensor according to claim 3, characterized in that: The arc-shaped connecting rod (7), the flow stabilizer (8), the through hole (9), the float (10), the transmission rod (11), and the sleeve (12) are a set, and there are two sets in total.

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