Device for measuring static torque of magnetic coupler

Abstract

The utility model relates to the technical field of magnetic couplers, and provides a device for measuring static torque of a magnetic coupler, which comprises a speed reducer unit, a measuring unit and a magnetic coupler unit. The speed reducer unit comprises a speed reducer and a coupler. The output end of the speed reducer is connected with the coupler; the measuring unit comprises a static torque sensor and a special digital display instrument; the static torque sensor is arranged at the end part of the coupler and is in signal connection with the special digital display instrument; the magnetic coupler unit comprises an outer magnetic driving assembly and an inner magnetic assembly. The outer magnetic driving assembly comprises a driving shaft, a bearing frame, a rolling bearing, a connecting body and an outer magnetic cylinder body. The inner magnetic assembly comprises an inner magnetic rotor, a pump shaft, a bearing body and a shell cover. According to the utility model, the measurement is convenient, the measurement efficiency is improved, and magnetic couplers of different specifications can be measured.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic couplers, in particular to a device for measuring the static torque of a magnetic coupler. Background Art

[0002] The magnetic coupling is a non-contact power transmission. Compared with ordinary mechanical transmission, the magnetic coupling uses the principle of electromagnetics to achieve energy transfer without direct mechanical connection. It not only greatly reduces friction loss and vibration loss, but also makes torque transmission smoother.

[0003] The magnetic coupling is an important component of the magnetic pump. The static torque of the magnetic coupling needs to be measured so that designers can design a magnetic pump that meets customer requirements based on real data.

[0004] At present, the static torque measurement of the magnetic coupler requires the magnetic coupler to be installed on the magnetic pump machine for measurement. However, installing the magnetic coupler on the whole machine will make the measurement process very inconvenient and the measurement efficiency is low. Magnetic couplers of different specifications cannot be measured. Therefore, a simple-to-operate and efficient device for measuring the static torque of the magnetic coupler is needed. Utility Model Content

[0005] The utility model mainly solves the technical problems of static torque measurement of magnetic couplers in the prior art, such as inconvenient measurement, low measurement efficiency, and inability to measure magnetic couplers of different specifications. A device for measuring the static torque of a magnetic coupler is proposed to facilitate measurement, improve measurement efficiency, and enable measurement of magnetic couplers of different specifications.

[0006] The utility model provides a device for measuring the static torque of a magnetic coupler, comprising: a reducer unit, a measuring unit and a magnetic coupler unit;

[0007] The reducer unit comprises: a reducer and a coupling; the output end of the reducer is connected to the coupling;

[0008] The measuring unit comprises: a static torque sensor and a dedicated digital display instrument; the static torque sensor is arranged at the end of the coupling, and the static torque sensor is connected to the dedicated digital display instrument by signal;

[0009] The magnetic coupler unit comprises: an external magnetic drive component and an internal magnetic component;

[0010] The external magnetic drive assembly comprises: a drive shaft, a bearing frame, a rolling bearing, a connector and an external magnetic cylinder;

[0011] The drive shaft is connected to the static torque sensor; the drive shaft is connected to the external magnetic cylinder, a rolling bearing is installed on the drive shaft; a bearing frame is arranged on the rolling bearing; the bearing frame is connected to the connector;

[0012] The inner magnetic assembly comprises: an inner magnetic rotor, a pump shaft, a bearing body and an outer shell cover; the inner magnetic rotor is fixed to the pump shaft, the pump shaft is fixed to the outer shell cover through the bearing body; the outer shell cover is connected to the connector;

[0013] An outer magnetic cylinder body is sleeved on the inner magnetic rotor, and an isolation sleeve is arranged between the inner magnetic rotor and the outer magnetic cylinder body.

[0014] Preferably, a base is provided at the bottom of the reducer.

[0015] Preferably, supporting feet are provided at the bottom of the bearing frame.

[0016] Preferably, a support frame is provided at the bottom of the outer shell cover.

[0017] Preferably, the isolation sleeve is made of Hastelloy.

[0018] The utility model provides a device for measuring the static torque of a magnetic coupler. The device outputs a low-speed high-torque output through a reducer to drive the coupling, the static torque sensor and the external magnetic drive component to rotate. At the same time, the internal magnetic component is fixed by a key and does not follow the rotation, forming a state in which the internal magnet is fixed and the external magnet rotates, simulating a static torque state. The maximum torque of the magnetic coupler is measured by the static torque sensor, and the static torque of the magnetic coupler is measured, so that designers can design a magnetic pump that meets customer requirements based on the test data. The utility model does not need to install the magnetic coupler on the whole machine for measurement. The measurement is convenient, the measurement speed is fast, the display is accurate, and the measurement efficiency is improved. For magnetic couplers of different specifications, it only needs to be installed on the support legs and the support frame, and the drive shaft is connected to the static torque sensor to realize the static torque measurement of the magnetic coupler. It can measure magnetic couplers of different specifications and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a device for measuring static torque of a magnetic coupler provided by the utility model.

[0020] Figure numerals: 1. reducer; 2. base; 3. coupling; 4. special digital display instrument; 5. static torque sensor; 6. drive shaft; 7. support foot; 8. connector; 9. external magnetic cylinder; 10. outer shell cover; 11. support frame; 12. pump shaft; 13. isolation sleeve; 14. bearing body; 15. internal magnetic rotor; 16. rolling bearing; 17. bearing frame. DETAILED DESCRIPTION

[0021] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for the sake of ease of description, only the parts related to the present invention are shown in the accompanying drawings, rather than all of the contents.

[0022] like Figure 1 As shown, an embodiment of the utility model provides a device for measuring the static torque of a magnetic coupler, comprising: a reducer unit, a measuring unit and a magnetic coupler unit.

[0023] The reducer unit comprises: a reducer 1 and a coupling 3; the output end of the reducer 1 is connected to the coupling 3. The reducer 1 realizes high speed and low torque input and low speed and high torque output, and its speed ratio is 300:1; the output end of the reducer 1 is connected to the coupling 3, driving it to rotate at low speed and high torque.

[0024] The measuring unit includes: a static torque sensor 5 and a special digital display instrument 4; the static torque sensor 5 is arranged at the end of the coupling 3, and the static torque sensor 5 is connected to the special digital display instrument 4 by signal. The static torque sensor 5 can adopt the model WTQ-98B-1000N.m, and the accuracy is 0.3% FS. The static torque sensor 5 realizes the measurement of torque, and transmits the signal to the special digital display instrument 4 through the signal line to realize the display of torque; the special digital display instrument 4 can realize the real-time display of torque, peak value display, peak value display, which is convenient for observing the corresponding torque value; the coupling 3 is connected to the static torque sensor 5, driving it to rotate at low speed and high torque.

[0025] The magnetic coupling unit includes an external magnetic drive component and an internal magnetic component.

[0026] The external magnetic drive assembly includes: a drive shaft 6, a bearing frame 17, a rolling bearing 16, a connector 8 and an external magnetic cylinder 9. The drive shaft 6 is connected to the static torque sensor 5; the drive shaft 6 is connected to the external magnetic cylinder 9, and a rolling bearing 16 is installed on the drive shaft 6; a bearing frame 17 is arranged on the rolling bearing 16; the bearing frame 17 is connected to the connector 8. The static torque sensor 5 is connected to the drive shaft 6, driving it to rotate at a low speed and high torque; the drive shaft 6 is connected to the external magnetic cylinder 9, driving it to rotate at a low speed and high torque. Therefore, the external magnetic drive assembly can realize the free rotation of the external magnetic cylinder 9 in the axial direction.

[0027] The inner magnetic assembly includes: an inner magnetic rotor 15, a pump shaft 12, a bearing body 14 and an outer shell cover 10; the inner magnetic rotor 15 is fixed to the pump shaft 12 through a key, the pump shaft 12 is fixed to the outer shell cover 10 through the bearing body 14; the outer shell cover 10 is connected to the connector 8. Specifically, the pump shaft 12 penetrates the bearing body 14, the bearing body 14 is connected to the outer shell cover 10, and the pump shaft 12 is connected to the outer shell cover 10 through a key; in this way, the inner magnetic rotor 15 cannot rotate axially, forming a blocked state.

[0028] The inner magnetic rotor 15 is sleeved with an outer magnetic cylinder 9, and an isolation sleeve 13 is arranged between the inner magnetic rotor 15 and the outer magnetic cylinder 9. The isolation sleeve 13 is made of Hastelloy. The isolation sleeve 13 isolates the outer magnetic drive assembly and the inner magnetic assembly, and prevents the inner and outer magnetics from attracting each other and causing damage to the magnetic block when the outer magnetic drive assembly and the inner magnetic assembly are installed.

[0029] Furthermore, a base 2 is provided at the bottom of the reducer 1. A support leg 7 is provided at the bottom of the bearing frame 17. A support frame 11 is provided at the bottom of the housing cover 10. The base 2 supports the reducer, and the support leg 7 and the support frame 11 jointly support the magnetic coupling unit. The base 2 of the utility model has a certain thickness, and the thickness of the base 2 is 30 mm, which can raise the reducer 1, thereby increasing the center height of the surface supporting the magnetic coupling unit, so as to install and measure other larger magnetic coupling units.

[0030] The utility model is a device for measuring the static torque of a magnetic coupling. The reducer 1 and the coupling 3 rotate, and the drive shaft 6 is driven to rotate through the static torque sensor 5, so that the outer magnetic cylinder body 9 performs a low-speed and high-torque rotational motion, and the torque is transmitted to the inner magnetic rotor 15. The inner magnetic rotor 15 is connected to the pump shaft 12 through a key, and the pump shaft 12 is connected to the outer shell cover 10 through a key. The outer shell cover 10 is connected to a non-rotatable connector 8, which eventually causes the inner magnetic rotor 15 to form a blocked state and the outer magnetic cylinder body 9 rotates and derotates; thereby, the static torque sensor 5 measures the maximum static torque when the inner and outer magnetic derotates, and displays it through a dedicated digital display instrument 4.

[0031] The method of using the device for measuring the static torque of a magnetic coupling of the utility model is as follows:

[0032] 1) Assemble the magnetic coupler unit;

[0033] 2) Select corresponding legs 7 and support frames 11 according to the specifications of the magnetic coupler unit to be measured;

[0034] 3) Connect the drive shaft 6 of the magnetic coupling unit to the static torque sensor 5 and connect it to the reducer 1 through the coupling 3;

[0035] 4) Turn on the power supply of reducer 1 motor and jog the motor to see whether the whole device rotates normally;

[0036] 5) Connect the static torque sensor 5 and the dedicated digital display instrument 4 with a signal line;

[0037] 6) Turn on the power of the dedicated digital display instrument 4 and check whether the display is "0";

[0038] 7) Turn on the power supply of the motor of the reducer 1, and the whole device rotates. At the same time, check the maximum peak value displayed by the special digital display instrument 4 and make a record.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that modifying the technical solutions recorded in the aforementioned embodiments, or replacing part or all of the technical features therein by equivalents, does not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A device for measuring the static torque of a magnetic coupling, characterized in that: include: Reducer unit, measuring unit and magnetic coupling unit; The reducer unit comprises: a reducer (1) and a coupling (3); the output end of the reducer (1) is connected to the coupling (3); The measuring unit comprises: a static torque sensor (5) and a dedicated digital display instrument (4); the static torque sensor (5) is arranged at the end of the coupling (3), and the static torque sensor (5) is connected to the dedicated digital display instrument (4) by signal; The magnetic coupler unit comprises: an external magnetic drive component and an internal magnetic component; The external magnetic drive assembly comprises: a drive shaft (6), a bearing frame (17), a rolling bearing (16), a connector (8) and an external magnetic cylinder (9); The drive shaft (6) is connected to the static torque sensor (5); the drive shaft (6) is connected to the external magnetic cylinder (9); a rolling bearing (16) is installed on the drive shaft (6); a bearing frame (17) is arranged on the rolling bearing (16); the bearing frame (17) is connected to the connector (8); The internal magnetic assembly comprises: an internal magnetic rotor (15), a pump shaft (12), a bearing body (14) and an outer shell cover (10); the internal magnetic rotor (15) is fixed to the pump shaft (12), and the pump shaft (12) is fixed to the outer shell cover (10) via the bearing body (14); the outer shell cover (10) is connected to a connecting body (8); The inner magnetic rotor (15) is sleeved with an outer magnetic cylinder body (9), and an isolation sleeve (13) is provided between the inner magnetic rotor (15) and the outer magnetic cylinder body (9).

2. The device for measuring static torque of a magnetic coupling according to claim 1, characterized in that: A base (2) is provided at the bottom of the reducer (1).

3. The device for measuring static torque of a magnetic coupling according to claim 2, characterized in that: A support foot (7) is provided at the bottom of the bearing frame (17).

4. The device for measuring static torque of a magnetic coupling according to claim 3, characterized in that: A support frame (11) is provided at the bottom of the outer shell cover (10).

5. The device for measuring static torque of a magnetic coupling according to claim 1, characterized in that: The material of the isolation sleeve (13) is Hastelloy.

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