A rotating float liquid level measuring device

Abstract

The utility model discloses a kind of rotary float liquid level measuring devices, including float ball and the float pole connected, U-shaped support arm, gear assembly, fixed arm, magnet shaft, pointer dial and flange seat, the flange seat is fixed on the lateral wall of liquid storage tank, connect with U-shaped support arm by fixed arm, float pole and float ball are connected below U-shaped support arm, float ball is placed in the liquid to be measured, the magnet shaft and pointer dial are installed on the flange seat.The gear assembly is arranged at the junction of U-shaped support arm and fixed arm, the magnet shaft is connected with the gear assembly, the magnet shaft drives the pointer in the pointer dial rotation by magnetic attraction mode.The indicating component of the utility model through rotary float liquid level measuring device and the measured medium are completely isolated, good sealing, measurement has the characteristics of strong corrosion resistance, high safety, strong adaptability.

Description

Technical Field

[0001] This utility model relates to the field of liquid level measurement technology, specifically a rotating float liquid level measuring device. Background Technology

[0002] In modern petrochemical and other industrial fields, liquid level measurement in various storage tanks is a critical indicator. How to accurately and reliably measure the liquid level and calculate the liquid volume or mass in the storage tank, thereby achieving automated control and ensuring production safety, is becoming increasingly important in modern industry.

[0003] In the measurement of liquid levels of hazardous chemical liquids, due to explosion-proof and leakage-proof requirements, the liquid level measurement should be installed in an isolated manner inside and outside the tank as much as possible. Traditional liquid level measurement methods are difficult to meet this requirement. Summary of the Invention

[0004] The purpose of this invention is to provide a rotating float liquid level measuring device to solve the problems mentioned in the background art. It adopts an isolated magnetic coupling working principle, which eliminates the influence of moving parts on the seal. The part in contact with the liquid is made of corrosion-resistant and rust-resistant metal material, which has a long service life and low maintenance requirements.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A rotating float liquid level measuring device includes a float ball and a connected float rod, a U-shaped support arm, a gear assembly, a fixed arm, a magnetic shaft, a pointer dial, and a flange seat. The flange seat is fixed to the side wall of a liquid storage tank and connected to the U-shaped support arm via the fixed arm. The float rod and float ball are connected to the bottom of the U-shaped support arm. The float ball is placed in the liquid to be measured. The magnetic shaft and pointer dial are mounted on the flange seat. One end of the float is connected to a float ball, and the other end is connected to the U-shaped support arm. A gear assembly is provided at the junction of the U-shaped support arm and the fixed arm. The gear assembly is connected to one end of the magnet shaft. The other end of the magnet shaft is provided with a first magnet. The pointer of the pointer dial is provided with a second magnet. When the gear assembly drives the magnet shaft to rotate, the magnet shaft drives the pointer in the pointer dial to rotate through the magnetic attraction between the first magnet and the second magnet.

[0006] Furthermore, the gear assembly includes a large gear and a small gear, which can mesh at 90°. One end of the magnet shaft passes through the interior of the fixed arm and is connected to the small gear, while the other end is a first magnet, which is opposite to the second magnet of the pointer dial.

[0007] The U-shaped support arm is also equipped with counterweights on both sides to adjust the weight.

[0008] The dial of the pointer is equipped with a three-axis magnetometer, which can calculate the angle of rotation of the second magnet.

[0009] The pointer dial is also connected to a data cable to transmit the measurement data to the level transmitter terminal for data processing and remote transmission.

[0010] The magnet shaft is installed inside the liquid storage tank, and the pointer dial is installed on the outer wall of the liquid storage tank. The two rotate through magnetic attraction.

[0011] The working principle of this utility model is as follows: When the liquid level in the liquid storage tank rises, the float in the liquid being tested drives the U-shaped support arm, which in turn drives the large gear in the linkage gear assembly. The large gear and the small gear mesh at 90°, and the large gear drives the small gear to rotate. The small gear then drives the magnet shaft to rotate. The rotation angle of the magnet shaft is directly proportional to the stroke of the float.

[0012] The pointer dial is placed on the outer wall of the storage tank. When the magnetic shaft inside the storage tank rotates, it will drive the magnet on the pointer dial to rotate synchronously, thereby causing the pointer to generate a liquid level indication. The pointer dial has a triaxial magnetometer inside. By measuring the magnetic flux density on the three axes, the rotation angle of the second magnet is calculated and transmitted to the liquid level transmitter terminal for data processing and remote transmission via the data line.

[0013] Compared with existing technologies, the advantages of this invention are as follows: The rotating float level measuring device of this invention adopts an isolated magnetic coupling working principle, eliminating the influence of moving parts on the seal. The parts in contact with the liquid are made of corrosion-resistant and rust-resistant metal materials, resulting in a long service life, low maintenance requirements, and performance unaffected by material buildup or minor corrosion. The indicating component of the rotating float level measuring device is completely isolated from the measured medium, ensuring good sealing and safe use. Furthermore, the upper and lower limits of the mechanical structure of the level measuring device reduce the likelihood of accidental activation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a schematic diagram showing the state of the float and float rod after rotation.

[0016] Figure 3 This is a schematic diagram of the pointer dial and data cable of this utility model.

[0017] In the diagram: 1. Float, 2. Float rod, 3. U-shaped support arm, 4. Gear assembly, 5. Counterweight, 6. Magnet shaft, 7. Flange seat, 8. Fixed arm, 9. Pointer dial, 10. Data cable. Detailed Implementation

[0018] 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.

[0019] Please see Figures 1 to 3 This utility model provides a technical solution: A rotating float liquid level measuring device includes a float 1 and a connected float rod 2, a U-shaped support arm 3, a gear assembly 4, a fixed arm 8, a magnetic shaft 6, a pointer dial 9, and a flange seat 7. The flange seat 7 is fixed to the side wall of a liquid storage tank and connected to the U-shaped support arm 3 via the fixed arm 8. The float rod 2 and the float 1 are connected to the bottom of the U-shaped support arm 3. The float 1 is placed in the liquid to be measured. The magnetic shaft 6 and the pointer dial 9 are mounted on the flange seat 7.

[0020] One end of the float 2 is connected to the float ball 1, and the other end is connected to the U-shaped support arm 3. A gear assembly 4 is provided at the connection between the U-shaped support arm 3 and the fixed arm 8. The gear assembly 4 includes a large gear and a small gear, which can mesh at 90°.

[0021] One end of the magnet shaft 6 passes through the inside of the fixed arm 8 and is connected to the small gear, while the other end is provided with a first magnet. The pointer of the pointer dial 9 is provided with a second magnet. When the gear assembly 4 drives the magnet shaft 6 to rotate, the magnet shaft 6 drives the pointer inside the pointer dial 9 to rotate by the magnetic attraction between the first magnet and the second magnet.

[0022] The U-shaped support arm 3 is also equipped with counterweights 5 on both sides to adjust the weight.

[0023] The pointer dial 9 is equipped with a three-axis magnetometer, which can calculate the rotation angle of the second magnet.

[0024] The pointer dial 9 is also connected to a data line 10, which transmits the measurement data to the level transmitter terminal for data processing and remote transmission.

[0025] The working principle of this utility model: When the liquid level in the liquid storage tank rises, the float 1 in the liquid to be tested drives the U-shaped support arm 3, which in turn drives the large gear in the gear assembly 4. The large gear and the small gear mesh at 90°, and the large gear drives the small gear to rotate. The small gear then drives the magnet shaft 6 to rotate. The rotation angle of the magnet shaft 6 is proportional to the stroke of the float 1.

[0026] The pointer dial 9 is placed on the outer wall of the storage tank. When the magnetic shaft 6 inside the storage tank rotates, the first magnet on it will drive the second magnet of the pointer dial 9 to rotate synchronously, thereby causing the pointer to generate liquid level indication. The pointer dial 9 has a triaxial magnetometer inside. By measuring the magnetic flux density on the three axes, the rotation angle of the second magnet is calculated and transmitted to the liquid level transmitter terminal via the data line 10 for data processing and remote transmission.

[0027] The liquid level measuring device of this invention has its liquid-contact parts made of corrosion-resistant and rust-resistant metal materials, resulting in a long service life, low maintenance requirements, and performance unaffected by material buildup or minor corrosion. The indicating mechanism of the liquid level measuring device is completely isolated from the measured medium, ensuring good sealing and safe operation. It can be widely used for measuring and controlling viscous, dirty, flammable, explosive, and corrosive media, exhibiting strong adaptability. Employing an intelligent signal processor, it eliminates the need for manual reversal, allowing direct zero-point and range adjustments, improving the convenience and accuracy of measurement. Therefore, the rotating float liquid level measuring device possesses strong corrosion resistance, high safety, strong adaptability, and complete isolation between the indicating component and the measured medium, ensuring good sealing and safe operation. Furthermore, the upper and lower limits of the mechanical structure of the liquid level measuring device reduce the likelihood of accidental activation, making it a promising application in the field of liquid level measurement and control.

[0028] 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 rotating float liquid level measuring device, characterized in that, The device includes a float and a connected float rod, a U-shaped support arm, a gear assembly, a fixed arm, a magnetic shaft, a pointer dial, and a flange seat. The flange seat is fixed to the side wall of the liquid storage tank and connected to the U-shaped support arm via the fixed arm. The float rod and float are connected to the bottom of the U-shaped support arm. The float is placed in the liquid to be tested. The magnetic shaft and pointer dial are mounted on the flange seat. One end of the float is connected to a float ball, and the other end is connected to the U-shaped support arm. A gear assembly is provided at the junction of the U-shaped support arm and the fixed arm. The gear assembly is connected to one end of the magnet shaft. The other end of the magnet shaft is provided with a first magnet. The pointer of the pointer dial is provided with a second magnet. When the gear assembly drives the magnet shaft to rotate, the magnet shaft drives the pointer in the pointer dial to rotate through the magnetic attraction between the first magnet and the second magnet.

2. The rotating float liquid level measuring device according to claim 1, characterized in that: The gear assembly includes a large gear and a small gear, which can mesh at 90°. One end of the magnet shaft passes through the interior of the fixed arm and is connected to the small gear, while the other end is a first magnet, which is opposite to the second magnet of the pointer dial.

3. The rotating float liquid level measuring device according to claim 1, characterized in that: The U-shaped support arm is also equipped with counterweights on both sides to adjust the weight.

4. The rotating float liquid level measuring device according to claim 1, characterized in that: The dial of the pointer is equipped with a three-axis magnetometer, which can calculate the angle of rotation of the second magnet.

5. A rotating float liquid level measuring device according to claim 1 or 4, characterized in that, The pointer dial is also connected to a data cable to transmit measurement data over a distance.

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