A magnetostrictive level gauge device for monitoring water levels in paddy fields

Abstract

This utility model relates to the field of water level monitoring technology and discloses a magnetostrictive level gauge device for monitoring paddy field water levels. It includes an acrylic tube and a top cover mounted on the top of the acrylic tube, on which a level sensor is installed. In this utility model, paddy field water enters through a channel at the bottom of the filter cover and is filtered by the filter element to remove impurities such as silt, algae, and humus, preventing internal contamination of the acrylic tube. The filter assembly prevents impurities from adhering to the surface of the measuring rod or inside the float, reducing mechanical wear and signal interference, lowering maintenance frequency, and extending the overall service life of the device. The float density is set to 0.5 g / cm³. 3 With a large diameter of 75mm, the buoyancy volume is significantly increased, balancing gravity and adsorption force to ensure that the float responds sensitively to changes in water level. Symmetrical bushings are installed at both ends of the float's through-hole to achieve three-point contact positioning, allowing the float to slide in the center, reducing the contact area, lowering friction, avoiding jamming, and improving measurement accuracy.

Description

Technical Field

[0001] This utility model relates to the field of water level monitoring technology, specifically a magnetostrictive level gauge device for monitoring water levels in paddy fields. Background Technology

[0002] The magnetostrictive principle involves a microcontroller sending an interrogation pulse to an excitation module, which simultaneously applies a voltage to the loop formed by the waveguide wire and the return line. A current is generated in the waveguide wire, creating a circumferential Ampere ring magnetic field. When this ring magnetic field couples with the bias permanent magnet of the float, a Widmann effect torsional stress wave is generated on the surface of the waveguide wire. This torsional wave propagates at the speed of sound from the point of generation towards both ends of the waveguide wire. The torsional wave reaching the ends is absorbed by damping devices, while the signal reaching the excitation end is received by a detection device. Magnetostrictive level gauges are a type of level gauge manufactured based on the magnetostrictive effect.

[0003] When using traditional magnetostrictive level gauges, in paddy field environments, silt, algae, humus, and other substances easily adhere to the surface of the measuring rod or the inside of the float, causing the float to move poorly on the measuring rod or even get stuck. Over time, microorganisms (such as snails) grow on the surface of the measuring rod and the float, and aquatic plants support the float, increasing friction and affecting the free rise and fall of the float with the liquid level, thus affecting the accuracy of water level monitoring. Utility Model Content

[0004] The purpose of this invention is to provide a magnetostrictive level gauge device for monitoring water levels in paddy fields, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a magnetostrictive level gauge device for monitoring paddy field water levels, comprising an plexiglass tube, and further comprising:

[0006] A top cover is installed on the top of the plexiglass tube, and a liquid level sensor is installed on the top cover. A filter assembly for filtering the liquid entering the plexiglass tube is installed at the bottom of the plexiglass tube.

[0007] A measuring rod is installed at the bottom of the liquid level sensor, with a float mounted on the outside of the measuring rod and a bushing installed inside the float.

[0008] Preferably, two bushings are provided and symmetrically fixedly installed at both ends of the float through hole.

[0009] Preferably, the density of the float is set to 0.5 g / m³. 3 .

[0010] Preferably, the filter assembly includes a filter element cover installed at the bottom of the plexiglass tube, a filter element installed inside the filter element cover, a support leg fixedly installed at the bottom of the filter element cover, and a sealing ring installed at the top of the filter element.

[0011] Preferably, the support legs are provided in three parts and arranged in a circular array at the bottom of the filter cover.

[0012] Preferably, the bottom of the filter element cover is provided with a through groove, and the through groove and the bottom plate of the filter element cover form a placement platform for storing the filter element.

[0013] Preferably, the inner wall of the filter element cover is provided with a threaded groove, and the bottom of the plexiglass tube is fixedly installed with a threaded tube.

[0014] Preferably, the top of the top cover has a vent hole.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] In this invention, paddy field water enters through the bottom groove of the filter element cover and is filtered by the filter element, effectively removing impurities such as silt, algae, and humus. This prevents internal contamination of the plexiglass tube, and the filtration assembly avoids impurities adhering to the surface of the measuring rod or inside the float, reducing mechanical wear and signal interference, lowering maintenance frequency, and extending the overall service life of the device. The float density is set at 0.5 g / cm³. 3 With a large diameter of 75mm, the buoyancy volume is significantly increased, balancing gravity and adsorption force to ensure that the float responds sensitively to changes in water level. Symmetrical bushings are installed at both ends of the float's through-hole to achieve three-point contact positioning, allowing the float to slide in the center, reducing the contact area, lowering friction, avoiding jamming, and improving measurement accuracy. Attached Figure Description

[0017] Figure 1 A schematic diagram of the main structure of the magnetostrictive level gauge device for monitoring paddy field water level provided by this utility model;

[0018] Figure 2 A schematic diagram of the connection structure between the top cover and the plexiglass tube provided by this utility model;

[0019] Figure 3 A schematic diagram of the internal structure of the acrylic tube provided by this utility model;

[0020] Figure 4 A schematic diagram of the internal structure of the float provided by this utility model;

[0021] Figure 5 A schematic diagram of the filter assembly structure provided by this utility model;

[0022] Figure 6 This is a schematic diagram of the filter cover structure provided by this utility model.

[0023] In the diagram: 1. Acrylic glass tube; 2. Top cover; 3. Filter assembly; 31. Filter element cover; 32. Filter element; 33. Support leg; 4. Liquid level sensor; 5. Measuring rod; 6. Float; 7. Bushing; 8. Vent hole; 9. Sealing ring; 10. Through groove; 11. Placement platform; 12. Threaded tube; 13. Threaded groove. Detailed Implementation

[0024] 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.

[0025] Please see Figure 1-6 As shown, a magnetostrictive level gauge device for monitoring paddy field water levels includes an acrylic tube 1 made of transparent acrylic glass. It also includes a top cover 2 mounted on the top of the acrylic tube 1, on which a level sensor 4 is installed. The level sensor 4 is mounted on the top of the acrylic tube 1 via the top cover 2. A filter assembly 3 is installed at the bottom of the acrylic tube 1 to filter the liquid entering the tube. Water is filtered through the filter assembly 3 before entering the acrylic tube 1, preventing mud, algae, humus, etc., from entering the acrylic tube 1 and adhering to the surface of the measuring rod 5 or the inside of the float 6, thus preventing the float 6 from moving poorly on the measuring rod 5. A measuring rod 5 is installed at the bottom of the level sensor 4, with the float 6 mounted on its outer side. Two bushings 7 are installed inside the float 6, symmetrically fixed at both ends of the through-hole of the float 6. The density of the float 6 is set to 0.5 g / m³. 3 The float 6 has a diameter of 75mm, which is larger than the conventional size, and its density is set to 0.5g / m³. 3 This setup increases buoyancy, balances the upward and downward forces, reduces the influence of adsorbents on the measurement results, and adds bushings 7 to both ends of the hole of the float 6 to center it, while reducing the contact area between the measuring rod and the float.

[0026] It should be noted that the model or specific shape of the liquid level sensor 4 should be selected by those skilled in the art based on their conventional judgment in the field, and the specific structure and working principle are common knowledge to those skilled in the art. Its combined application and parameter optimization are conventional technical means in the field and will not be described in detail in this application.

[0027] The filter assembly 3 includes a filter element cover 31 installed at the bottom of the plexiglass tube 1. A filter element 32 is installed inside the filter element cover 31. Support legs 33 are fixedly installed at the bottom of the filter element cover 31, and a sealing ring 9 is installed at the top of the filter element 32. Three support legs 33 are arranged in a circular array at the bottom of the filter element cover 31. A through groove 10 is formed at the bottom of the filter element cover 31, and the through groove 10 and the bottom plate of the filter element cover 31 form a placement platform 11 for storing the filter element 32. A threaded groove 13 is provided on the inner wall of the filter element cover 31, and a threaded tube 12 is fixedly installed at the bottom of the plexiglass tube 1. The filter element 32 is placed on the placement platform 11 inside the filter element cover 31, and then the sealing ring 9 is placed on top of the filter element 32. The filter element cover 31 is then moved through its... The internal threaded groove 13 is threaded onto the threaded tube 12 at the bottom of the acrylic tube 1, thereby installing the filter cover 31 and the filter element 32 at the bottom of the acrylic tube. The support leg 33 at the bottom of the filter cover 31 raises the entire glass tube away from the silt in the paddy field, preventing silt from entering the interior of the glass tube. Water from the paddy field enters through the through groove 10 at the bottom of the filter cover 31, and then is filtered by the filter element 32 to remove impurities such as mud, algae, and humus from the water, preventing impurities from entering the interior of the acrylic tube 1 and affecting the monitoring effect. The sealing ring 9 improves the sealing between the filter cover 31 and the acrylic tube 1, preventing impurities from entering the acrylic tube 1 from the gap between the glass tube and the filter cover 31.

[0028] The top of the top cover 2 has a vent hole 8, which allows air in the plexiglass tube 1 to circulate with the outside, ensuring the air pressure inside and outside the glass tube is balanced, preventing the air pressure difference from adversely affecting the water level monitoring results, and improving the reliability of the monitoring.

[0029] Working Principle: The water in the paddy field is first filtered through the filter assembly 3 at the bottom of the device, and then enters the interior of the plexiglass tube 1. As the water level in the paddy field changes, the water level inside the plexiglass tube 1 changes synchronously, causing the float 6 on the measuring rod 5 to move up and down. The liquid level sensor 4 senses the positional change of the float 6 in real time and converts this signal into a measurable electrical signal, thereby monitoring the paddy field water level. The water in the paddy field enters the interior of the filter element cover 31 through the through-groove 10 at the bottom of the filter element cover 31, and then undergoes filtration by the filter element 32. The filter element 32 can filter out impurities such as mud, algae, and humus in the water, preventing these impurities from entering the interior of the plexiglass tube 1 and adhering to the surface of the measuring rod 5 or the interior of the float 6, thus avoiding affecting the normal movement of the float 6 on the measuring rod 5 and ensuring the accuracy of water level monitoring. The float 6 is installed on the outside of the measuring rod 5, and its density is set to 0.5 g / m³. 3The float 6 has a diameter of 75mm, which is larger than the conventional diameter. This special density and diameter setting increases the buoyancy of the float 6, allowing it to better balance the upward buoyancy and downward gravity in the water, reducing the influence of adsorbents in the paddy field on the measurement results. When the water level in the paddy field rises, the buoyancy of the float 6 increases, causing it to move upward; when the water level drops, the buoyancy of the float 6 decreases, causing it to move downward. Two bushings 7 are symmetrically fixed at both ends of the through-hole of the float 6. The bushings 7 center the float 6 on the measuring rod 5, reducing the contact area between the measuring rod 5 and the float 6, lowering the friction between them, and ensuring that the float 6 can move smoothly up and down on the measuring rod 5 with changes in water level, thus improving the sensitivity and accuracy of water level monitoring.

[0030] 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.

[0031] 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. A magnetostrictive liquid level gauge device for monitoring water level in paddy fields comprising a Perspex tube (1), characterized in that, Also includes: A top cover (2) is installed on the top of the plexiglass tube (1), and a liquid level sensor (4) is installed on the top cover (2). A filter assembly (3) for filtering liquid entering the plexiglass tube is installed at the bottom of the plexiglass tube (1). A measuring rod (5) is installed at the bottom of the liquid level sensor (4). A float (6) is installed on the outside of the measuring rod (5), and a bushing (7) is installed inside the float (6).

2. The magnetostrictive liquid level meter device for monitoring water level in rice field according to claim 1, characterized in that: Two bushings (7) are provided and symmetrically fixed at both ends of the through hole of the float (6).

3. The magnetostrictive liquid level meter device for monitoring water level in rice field according to claim 1, wherein: The density of the float ball (6) is set to 0.5 g / m 3 .

4. The magnetostrictive liquid level meter device for monitoring water level in rice field according to claim 1, wherein: The filter assembly (3) includes a filter element cover (31) installed at the bottom of the plexiglass tube (1), a filter element (32) is installed inside the filter element cover (31), a support leg (33) is fixedly installed at the bottom of the filter element cover (31), and a sealing ring (9) is installed at the top of the filter element (32).

5. The magnetostrictive liquid level meter device for monitoring water level in rice field according to claim 4, wherein: The support legs (33) are provided in three and arranged in a ring at the bottom of the filter cover (31).

6. The magnetostrictive liquid level meter device for monitoring water level in rice field according to claim 4, wherein: The bottom of the filter element cover (31) is provided with a through groove (10), and the through groove (10) and the bottom plate of the filter element cover (31) form a placement platform (11) for storing the filter element (32).

7. The magnetostrictive liquid level meter device for monitoring water level in rice field according to claim 4, wherein: The inner wall of the filter cover (31) is provided with a threaded groove (13), and the bottom of the plexiglass tube (1) is fixedly installed with a threaded tube (12).

8. The magnetostrictive liquid level meter device for monitoring water level in rice field according to claim 1, wherein: The top of the top cover (2) is provided with a vent hole (8).

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