Magnetic suspension vibration suppression and quick-change rotor type rotational viscometer

Abstract

The application relates to a magnetic suspension vibration suppression and quick-change rotor type rotary viscometer and relates to the technical field of rotary viscometers, which comprises a bottom plate and a rotor, the output end of the motor is fixedly connected with a rotating shaft, the outer wall of the rotating shaft is fixedly connected with an anti-vibration pipe, the outer wall of the anti-vibration pipe is fixedly connected with a first magnet at the upper end, the inner bottom end of the rotary viscometer body is fixedly connected with a second magnet, the bottom end of the rotating shaft is fixedly connected with an electromagnetic lock, and the upper end of the rotor is fixedly connected with a connecting head. The application has the advantages that the first magnet and the second magnet are arranged, a positive magnetic suspension system is formed according to the same-polarity repulsion principle of the magnets, the rotating shaft is separated from mechanical contact with the rotary viscometer body, the frictional resistance and vibration transmission of traditional ball bearings are eliminated, the electromagnetic lock and the connecting head are arranged, the connecting head of the rotor is electromagnetically adsorbed, and the effect of quick locking and releasing of the rotor is achieved.

Description

Technical Field

[0001] This application relates to the field of rotational viscometer technology, and in particular to a magnetically levitated vibration-damping and quick-change rotor type rotational viscometer. Background Technology

[0002] A rotational viscometer is an instrument that calculates the viscosity of a fluid by measuring the resistance generated by the rotation of a rotor. Its basic principle is based on Newton's law of internal friction, which states that the relative motion between the layers inside a fluid generates internal friction, and viscosity is a physical quantity that measures the magnitude of this internal friction.

[0003] However, most existing rotational viscometers use ball bearings to fix the motor shaft. This rigid connection allows motor vibrations to be transmitted to the rotor via the ball bearings. In low-viscosity fluids, even small vibrations can interfere with the torque signal, causing fluctuations or deviations in the measured values. Utility Model Content

[0004] The purpose of this application is to provide a magnetically levitated, vibration-damping, and quick-change rotor-type rotational viscometer, which has the advantages of easy disassembly. It solves the problem that most existing rotational viscometers use ball bearings to fix the motor shaft. In this rigid connection, the motor vibration is transmitted to the rotor through the ball bearings. In low-viscosity fluids, even small vibrations can interfere with the torque signal, leading to fluctuations or deviations in the measured values.

[0005] This application provides a magnetically levitated, vibration-damping, and quick-change rotor-type rotational viscometer, employing the following technical solution: A magnetically levitated, vibration-damping, and quick-change rotor-type rotational viscometer includes a base plate and a rotor. A bracket is fixedly connected to one side of the upper end of the base plate. The rotational viscometer body is slidably connected to the outer wall of the bracket. A motor is fixedly connected to one side of the inside of the rotational viscometer body. A rotating shaft is fixedly connected to the output end of the motor. A shock-absorbing tube is fixedly connected to the outer wall of the rotating shaft. A first magnet is fixedly connected to the upper end of the outer wall of the shock-absorbing tube. A correction ring is fixedly connected to the outer wall of the shock-absorbing tube. A second magnet is fixedly connected to the bottom inside of the rotational viscometer body. A ceramic positioning ring is fixedly connected to the inner wall of the second magnet. A fixing ring is fixedly connected to the bottom inside of the rotational viscometer body. Multiple piezoelectric ceramic sheets arranged in a ring array are fixedly connected to the upper end of the fixing ring. An electromagnetic lock is fixedly connected to the bottom end of the rotating shaft. A connector is fixedly connected to the upper end of the rotor.

[0006] By adopting the above technical solution, an active magnetic levitation system is formed by setting up the first and second magnets and utilizing the principle of like poles repulsion. This system decouples the rotating shaft from the rotational viscometer body, eliminating the frictional resistance and vibration transmission of traditional ball bearings. The ceramic positioning ring maintains a constant gap between the first and second magnets, preventing axial collisions or offsets and ensuring rotational stability. This system is suitable for micro-torque measurement of ultra-low viscosity fluids. The magnetic levitation system eliminates mechanical contact, avoiding metal particle contamination of the sample caused by bearing wear, and thus increasing the service life of the equipment. When the piezoelectric ceramic plate on the fixing ring receives vibration signals, it generates a reverse displacement to cancel the vibration. The electromagnetic lock and connector allow for rapid locking and releasing of the rotor through electromagnetic adsorption, eliminating the need for threaded rotation or complex alignment and reducing the time spent on each replacement. This device eliminates mechanical bearing wear through the magnetic levitation system and increases the stability of the rotating shaft during rotation through displacement compensation of the piezoelectric ceramic plate, thereby improving measurement accuracy.

[0007] Preferably, a linear module is fixedly connected to one side of the upper end of the base plate, an electric turntable is fixedly connected to the upper end of the moving end of the linear module, and a robotic arm is rotatably connected to the upper end of the electric turntable.

[0008] By adopting the above technical solution and integrating linear modules, electric turntables, and robotic arms on the base plate, the rotor replacement is automated, improving replacement efficiency.

[0009] Preferably, a rotor magazine is fixedly connected to the upper end of the base plate away from the support, and a placement rack is fixedly connected inside the rotor magazine. The placement rack has multiple bottom placement slots arranged in a linear array inside.

[0010] By adopting the above technical solution, the rotor library is set up to store rotors. The linear array placement slots arrange the rotors linearly according to type, specifications or usage frequency. With the linear module movement of the robotic arm, the target rotor can be quickly located, reducing installation time.

[0011] Preferably, a retaining ring is fixedly connected to the bottom end of the rotational viscometer body, an mounting ring is slidably disposed on the outer wall of the retaining ring, and a protective cover is fixedly connected to the bottom end of the mounting ring.

[0012] By adopting the above technical solution, the protective cover can prevent high-viscosity samples from being thrown out during high-speed rotation, thus preventing contamination of the rotational viscometer body or the surrounding environment. The retaining ring is fixed to the bottom of the rotational viscometer body, and the mounting ring is connected to the retaining ring through a sliding fit, enabling quick installation and removal of the protective cover without the need for tools.

[0013] Preferably, the first magnet is rotatably disposed inside the second magnet, and the ceramic positioning ring is fixedly disposed between the first magnet and the second magnet.

[0014] By adopting the above technical solution, the first magnet is fixedly installed inside, and the second magnet is fixedly installed on the outer wall of the shock-absorbing tube. The second magnet rotates with the shaft, and the repulsive force between the first magnet and the second magnet suspends the shock-absorbing tube inside the first magnet, reducing and eliminating the wear of traditional ball bearings. The ceramic positioning ring is set between the first magnet and the second magnet to ensure that the gap between the first magnet and the second magnet is uniform and stable, and to prevent the first magnet from colliding with the second magnet.

[0015] Preferably, the correction ring is rotatably disposed on the upper end of the fixed ring, and the correction ring is rotatably disposed inside multiple piezoelectric ceramic sheets.

[0016] By adopting the above technical solution, multiple piezoelectric ceramic sheets are evenly distributed along the circumference of the correction ring to form an elastic suspension support system. Each piezoelectric ceramic sheet undertakes the function of micro-displacement compensation. When the shaft deviates, the deformation of the piezoelectric ceramic sheet compensates for the deviation of the shaft.

[0017] Preferably, the connector is slidably disposed inside the electromagnetic latch.

[0018] By adopting the above technical solution, the outer wall of the connector slides and engages with the inner wall of the electromagnetic latch. The electromagnetic latch integrates an electromagnet coil. When the coil is energized, it generates a magnetic field that attracts the connector, thereby achieving locking.

[0019] Preferably, the rotor is rotatably disposed inside the protective cover.

[0020] By adopting the above technical solution, the rotor is placed inside a protective cover to prevent the rotor from colliding with the container when it rotates.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] This magnetic levitation vibration damping and quick-change rotor rotational viscometer utilizes the principle of like poles repulsion between the first and second magnets to form a contactless suspension support, eliminating mechanical friction on the rotating shaft. Combined with a ceramic positioning ring to maintain a stable gap, this improves measurement accuracy and extends equipment life. An active vibration damping system composed of piezoelectric ceramic sheets can detect and counteract shaft vibration in real time, ensuring stable and reliable testing. An electromagnetic locking mechanism enables rapid rotor replacement, improving work efficiency. Automated components, including a linear module, electric turntable, and robotic arm, along with a rotor storage unit, make rotor replacement more convenient and efficient. The snap-on design of the protective cover facilitates cleaning and maintenance. Through magnetic levitation vibration damping and automated intelligent rotor replacement, this system solves the problems of insufficient accuracy, cumbersome operation, and difficult maintenance associated with traditional viscometers. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this application;

[0024] Figure 2 This is a cross-sectional view of the rotational viscometer body of the structure described in this application;

[0025] Figure 3 This is a schematic diagram of the quick-change rotor structure of this application;

[0026] Figure 4 This is a schematic diagram of the protective cover installation structure of the present application.

[0027] Figure 5 This is a schematic diagram of the rotor storage rotor placement structure of this application.

[0028] In the picture:

[0029] 1. Base plate; 2. Bracket; 3. Rotary viscometer body; 4. Motor; 5. Shaft; 6. Anti-vibration tube; 7. First magnet; 8. Correction ring; 9. Second magnet; 10. Ceramic positioning ring; 11. Fixing ring; 12. Piezoelectric ceramic sheet; 13. Electromagnetic lock; 14. Rotor; 15. Connector; 16. Linear module; 17. Electric turntable; 18. Robotic arm; 19. Rotor storage; 20. Placement rack; 21. Placement slot; 22. Snap ring; 23. Mounting ring; 24. Protective cover. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1 -Appendix Figure 5 This application will be described in further detail below.

[0031] Example 1: A magnetically levitated, vibration-damping, and quick-change rotor-type rotational viscometer, referring to... Figure 1 , Figure 2 and Figure 3The system includes a base plate 1 and a rotor 14. A bracket 2 is fixedly connected to one side of the upper end of the base plate 1. A rotational viscometer body 3 is slidably connected to the outer wall of the bracket 2. The vertical position of the rotational viscometer body 3 can be adjusted by the bracket 2. A motor 4 is fixedly connected to one side of the inside of the rotational viscometer body 3. A rotating shaft 5 is fixedly connected to the output end of the motor 4. A shock-absorbing tube 6 is fixedly connected to the outer wall of the rotating shaft 5. A first magnet 7 is fixedly connected to the upper end of the outer wall of the shock-absorbing tube 6. A correction ring 8 is fixedly connected to the outer wall of the shock-absorbing tube 6. A second magnet 9 is fixedly connected to the bottom of the inside of the rotational viscometer body 3. Through the arrangement of the first magnet 7 and the second magnet 9, an active magnetic levitation system is formed by the principle of like poles repulsion of magnets, so that the rotating shaft 5 and the rotational viscometer body 3 are separated from mechanical contact, eliminating the frictional resistance and vibration transmission of traditional ball bearings. A ceramic positioning ring 10 is fixedly connected to the inner wall of the second magnet 9. The ceramic positioning ring 10 maintains a constant gap between the first magnet 7 and the second magnet 9, preventing axial collision or displacement and ensuring rotational stability. A fixing ring 11 is fixedly connected to the bottom of the rotational viscometer body 3. Multiple piezoelectric ceramic plates 12 arranged in a ring array are fixedly connected to the upper end of the fixing ring 11. When the piezoelectric ceramic plates 12 on the fixing ring 11 receive vibration signals, they generate reverse displacement to cancel the vibration. An electromagnetic lock 13 is fixedly connected to the bottom of the rotating shaft 5. A connector 15 is fixedly connected to the upper end of the rotor 14. The electromagnetic lock 13 and the connector 15 enable the rotor 14 to be quickly locked and released by electromagnetically adsorbing the connector 15 of the rotor 14 without the need for threaded rotation or complex alignment, thus reducing the time spent on each replacement. A linear module 16 is fixedly connected to one side of the upper end of the base plate 1. An electric turntable 17 is fixedly connected to the upper end of the moving end of the linear module 16. A robotic arm 18 is rotatably connected to the upper end of the electric turntable 17. By integrating the linear module 16, the electric turntable 17 and the robotic arm 18 on the base plate 1, the automatic replacement of the rotor 14 is realized, improving the replacement efficiency. A rotor magazine 19 is fixedly connected to the upper end of the base plate 1 away from the bracket 2.

[0032] Reference Figure 1 , Figure 3 and Figure 5 The rotor storage 19 is fixedly connected to a placement rack 20. The placement rack 20 has multiple bottom placement slots 21 arranged in a linear array inside. The rotor storage 19 is used to store rotors 14. The linear array placement slots 21 arrange the rotors 14 linearly according to type, specification or usage frequency. With the movement of the linear module 16 of the robotic arm 18, the target rotor 14 can be quickly located, reducing installation time.

[0033] Example 2: A magnetically levitated, vibration-damping, and quick-change rotor-type rotational viscometer, referring to... Figure 1 , Figure 2 and Figure 4A retaining ring 22 is fixedly connected to the bottom of the rotational viscometer body 3. An installation ring 23 is slidably mounted on the outer wall of the retaining ring 22. A protective cover 24 is fixedly connected to the bottom of the installation ring 23. During use, the protective cover 24 prevents high-viscosity samples from being thrown out during high-speed rotation, thus preventing contamination of the rotational viscometer body 3 or the surrounding environment. The retaining ring 22 is fixed to the bottom of the rotational viscometer body 3, and the installation ring 23 is connected to the retaining ring 22 through a sliding fit, enabling quick installation and removal of the protective cover 24 without the need for tools. A first magnet 7 is rotatably mounted inside a second magnet 9. A ceramic positioning ring 10 is fixedly mounted between the first magnet 7 and the second magnet 9. The first magnet 7 is fixedly mounted inside the rotational viscometer body 3, and the second magnet 9 is fixedly mounted on the outer wall of the shock-absorbing tube 6. The second magnet 9 rotates with the rotating shaft 5, and through the repulsive force between the first magnet 7 and the second magnet 9, the shock-absorbing tube 6 is suspended inside the first magnet 7, reducing or eliminating the wear of traditional ball bearings. The ceramic positioning ring 10 is... The first magnet 7 and the second magnet 9 are placed between each other to ensure a uniform and stable gap between them and prevent collisions. The correction ring 8 is rotatably mounted on the upper end of the fixed ring 11 and is rotatably mounted inside multiple piezoelectric ceramic sheets 12. The multiple piezoelectric ceramic sheets 12 are evenly distributed around the circumference of the correction ring 8 to form an elastic suspension support system. Each piezoelectric ceramic sheet 12 performs the function of micro-displacement compensation. When the rotating shaft 5 deviates, the deformation of the piezoelectric ceramic sheet 12 compensates for the deviation of the rotating shaft 5. The connector 15 is slidably mounted inside the electromagnetic lock 13. The outer wall of the connector 15 slides in cooperation with the inner wall of the electromagnetic lock 13. The electromagnetic lock 13 integrates an electromagnet coil. When the coil is energized, it generates a magnetic field that attracts the connector 15 and locks it. The rotor 14 is rotatably mounted inside the protective cover 24 to prevent the rotor 14 from colliding with the container when it rotates.

[0034] The implementation principle of this application embodiment is as follows:

[0035] During use, the bracket 2 can adjust the vertical position of the rotational viscometer body 3 for easy installation and operation. The motor 4 drives the rotating shaft 5 to rotate. The first magnet 7 on the shockproof tube 6 on the outer wall of the rotating shaft 5 and the second magnet 9 at the bottom of the inner part of the rotational viscometer body 3 form an active magnetic levitation system using the principle of like poles repulsion. This system separates the rotating shaft 5 from the body, reducing friction and vibration. The ceramic positioning ring 10 maintains a constant gap between the two magnets to ensure rotational stability. After receiving the vibration signal, the piezoelectric ceramic plate 12 on the fixing ring 11 generates a reverse displacement to cancel the vibration, further improving the suppression of vibration. During measurement, the electromagnetic latch 13 generates a magnetic field when energized, attracting the connector 15 of the rotor 14 and quickly completing the installation of the rotor 14. The rotor 14 rotates inside the protective cover 24 to avoid collision with the container. At the same time, the protective cover 24 can prevent high-viscosity samples from being thrown out and polluting the environment. When the rotor 14 needs to be replaced, the linear module 16, electric turntable 17 and robotic arm 18 on the base plate 1 work together. The robotic arm 18 accurately grabs the target rotor 14 from the placement rack 20 of the rotor magazine 19. Through the attraction and release of the electromagnetic latch 13, the rotor 14 is automatically and quickly replaced.

[0036] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be included within the scope of protection of this application.

Claims

1. A magnetically levitated, vibration-damping, and quick-change rotor-type rotational viscometer, comprising a base plate (1) and a rotor (14), characterized in that: A bracket (2) is fixedly connected to one side of the upper end of the base plate (1). A rotational viscometer body (3) is slidably connected to the outer wall of the bracket (2). A motor (4) is fixedly connected to one side of the inner side of the rotational viscometer body (3). A rotating shaft (5) is fixedly connected to the output end of the motor (4). A shock-absorbing tube (6) is fixedly connected to the outer wall of the rotating shaft (5). A first magnet (7) is fixedly connected to the upper end of the outer wall of the shock-absorbing tube (6). A correction ring (8) is fixedly connected to the outer wall of the shock-absorbing tube (6). A second magnet (9) is fixedly connected to the bottom inside the rotational viscometer body (3). A ceramic positioning ring (10) is fixedly connected to the inner wall of the second magnet (9). A fixing ring (11) is fixedly connected to the bottom inside the rotational viscometer body (3). A plurality of piezoelectric ceramic sheets (12) arranged in a ring array are fixedly connected to the upper end of the fixing ring (11). An electromagnetic lock (13) is fixedly connected to the bottom end of the rotating shaft (5). A connector (15) is fixedly connected to the upper end of the rotor (14).

2. The magnetic levitation vibration damping and quick-change rotor type rotational viscometer according to claim 1, characterized in that: A linear module (16) is fixedly connected to one side of the upper end of the base plate (1). An electric turntable (17) is fixedly connected to the upper end of the moving end of the linear module (16). A robotic arm (18) is rotatably connected to the upper end of the electric turntable (17).

3. The magnetic levitation vibration damping and quick-change rotor type rotational viscometer according to claim 1, characterized in that: The upper end of the base plate (1) away from the support (2) is fixedly connected to a rotor magazine (19), and a placement rack (20) is fixedly connected inside the rotor magazine (19). The placement rack (20) has multiple bottom placement slots (21) arranged in a straight line array inside.

4. The magnetic levitation vibration damping and quick-change rotor type rotational viscometer according to claim 1, characterized in that: The bottom end of the rotational viscometer body (3) is fixedly connected to a retaining ring (22), and an installation ring (23) is slidably provided on the outer wall of the retaining ring (22). The bottom end of the installation ring (23) is fixedly connected to a protective cover (24).

5. A magnetic levitation vibration damping and quick-change rotor type rotational viscometer according to claim 1, characterized in that: The first magnet (7) is rotatably disposed inside the second magnet (9), and the ceramic positioning ring (10) is fixedly disposed between the first magnet (7) and the second magnet (9).

6. The magnetic levitation vibration damping and quick-change rotor type rotational viscometer according to claim 1, characterized in that: The correction ring (8) is rotatably disposed on the upper end of the fixed ring (11), and the correction ring (8) is rotatably disposed inside multiple piezoelectric ceramic sheets (12).

7. A magnetic levitation vibration damping and quick-change rotor type rotational viscometer according to claim 1, characterized in that: The connector (15) is slidably disposed inside the electromagnetic latch (13).

8. A magnetic levitation vibration damping and quick-change rotor type rotational viscometer according to claim 1, characterized in that: The rotor (14) is rotatably disposed inside the protective cover (24).

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