Real-time rotating speed monitoring and recording device for metering pump

Abstract

The utility model discloses a real-time rotating speed monitoring and recording device for a metering pump, which relates to the technical field of TMT (Tetramethylbenzidine) spinning in the chemical fiber industry and comprises a paperless recorder, a signal transmitter, a proximity switch and a speed measuring gear component. The proximity switch is installed on a rack of the metering pump and located on one side of the speed measuring gear assembly, an output line of the proximity switch is connected to the input end of the signal transmitter, and the output end of the signal transmitter is connected to the paperless recorder. According to the utility model, the detachable speed measuring gear assembly is additionally arranged at the transmission shaft of the metering pump, and the proximity switch, the signal transmitter and the paperless recorder are used for measuring and recording the rotating speed in real time, so that a TMT metering pump rotating speed control system can be verified, and whether the rotating speed of the metering pump is abnormal or not can be checked by checking a historical curve; the rotating speed fault of the metering pump can be timely found to ensure that various indexes of products are normal.

Description

Technical Field

[0001] This utility model relates to the field of TMT spinning technology in the chemical fiber industry, and in particular to a real-time speed monitoring and recording device for metering pumps. Background Technology

[0002] The TMT metering pump speed control method involves manually inputting the metering pump speed in the SMU control system. After being transmitted to the corresponding position, the frequency of the metering pump motor inverter is set by the program calculation. The metering pump motor runs at this frequency until the speed is manually set again.

[0003] However, TMT metering pump speed control is not convenient for real-time speed monitoring and recording on site, making it difficult to determine whether the metering pump is running at the set speed. When the metering pump speed deviates slightly due to faults in the motor, gearbox, etc. on site, but does not cause the production line to stop, it will lead to unqualified product indicators that are not easily detected. When abnormal product indicators are found, it is also impossible to know when the fault first occurred.

[0004] Secondly, traditional monitoring devices are usually designed to be fixed, and once installed, they are difficult to move or reconfigure. Fixed monitoring devices lack flexibility and are not easy to adapt to changes in the production line or temporary monitoring needs, which limits their application scenarios. Utility Model Content

[0005] The purpose of this utility model is to provide a real-time speed monitoring and recording device for metering pumps, which can avoid situations where a small deviation in the speed of the metering pump due to a fault in the motor, gearbox, etc., does not cause the production line to stop, resulting in unqualified product indicators that are not easily detected. Furthermore, when abnormal product indicators are detected, it is impossible to know when the fault first occurred.

[0006] This utility model provides a real-time speed monitoring and recording device for a metering pump, including a paperless recorder, a signal transmitter, a proximity switch, and a speed measuring gear assembly. The speed measuring gear assembly is fixedly installed on the drive shaft of the metering pump. The proximity switch is installed on the frame of the metering pump and located on one side of the speed measuring gear assembly. The output line of the proximity switch is connected to the input terminal of the signal transmitter, and the output terminal of the signal transmitter is connected to the paperless recorder.

[0007] Preferably, the speed measuring gear assembly includes a pair of fixed sleeves, which are fixed to the drive shaft of the metering pump by bolts.

[0008] Preferably, each of the fixed sleeves has a symmetrical threaded hole on its inner side, and the bolt passes through the threaded hole to fix the fixed sleeve to the drive shaft of the metering pump.

[0009] Preferably, a pair of gear rings are fitted on the outer sides of the two fixing sleeves, and a bolt is connected between the pair of gear rings.

[0010] Preferably, each gear ring has a keyway on its inner side and a key block on its outer side, with the key block inserted into the keyway.

[0011] Preferably, a second threaded hole is provided in the keyway, and the bolt passes through the second threaded hole to fix the gear ring to the fixing sleeve.

[0012] Preferably, the inner diameter of the gear ring is slightly larger than the diameter of the fixed sleeve.

[0013] Preferably, multiple speed measuring gear assemblies can be configured, and each speed measuring gear assembly is equipped with a proximity switch and a signal transmitter on one side, and multiple signal transmitters are connected to the paperless recorder.

[0014] The metering pump real-time speed monitoring and recording device provided in this embodiment of the invention has the following advantages compared with the prior art:

[0015] 1. This utility model adds a detachable speed measuring gear assembly to the transmission shaft of the metering pump, and uses a proximity switch, signal transmitter and paperless recorder to measure and record the speed in real time. This can verify the TMT metering pump speed control system, check the historical curve to see if the metering pump speed is abnormal, detect metering pump speed faults in time, and ensure that all product indicators are normal.

[0016] 2. This utility model uses a fixed sleeve to fix the gear ring on the transmission shaft, and then installs the gear ring on the fixed sleeve, which facilitates the disassembly and assembly of the speed measuring gear. The ease of disassembly and assembly of the speed measuring gear allows the entire device to be disassembled and moved to monitor the speed of different spindle positions, thus reducing monitoring costs. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0019] Figure 2 This is a partial schematic diagram of the overall structure of an embodiment of the present utility model;

[0020] Figure 3 This is a schematic diagram of the speed measuring gear assembly structure according to an embodiment of the present utility model;

[0021] Figure 4 This is a schematic diagram showing the disassembled structure of the fixing sleeve and gear ring according to an embodiment of the present utility model.

[0022] Figure label:

[0023] 1. Paperless recorder; 2. Signal transmitter; 3. Proximity switch; 4. Speed ​​measuring gear assembly; 41. Fixing sleeve; 42. Key block; 43. Threaded hole one; 44. Gear ring; 45. Keyway; 46. Threaded hole two. Detailed Implementation

[0024] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0025] Example 1

[0026] Please refer to Figure 1 and Figure 2 This utility model embodiment provides a real-time speed monitoring and recording device for a metering pump, including a paperless recorder 1, a signal transmitter 2 (which converts the frequency signal into a 4-20mA signal), a proximity switch 3, and a speed measuring gear assembly 4. The speed measuring gear assembly 4 is fixedly installed on the drive shaft of the metering pump to ensure that the speed measuring gear assembly 4 rotates synchronously with the drive shaft. The proximity switch 3 is installed on the frame of the metering pump and is located on one side of the speed measuring gear assembly 4. The proximity switch 3 is a non-contact sensor with the model number E2EH-X3C1. When the tooth tip of the speed measuring gear assembly 4 passes its sensing surface, a pulse signal is generated. Each tooth tip passing will trigger a pulse. Therefore, the rotational speed can be calculated by counting the number of pulses generated per unit time. The output line of the proximity switch 3 is connected to the input terminal of the signal transmitter 2. The output terminal of the signal transmitter 2 is connected to the paperless recorder 1 to collect data from the signal transmitter 2 in real time and display, store and analyze it. The paperless recorder 1 can automatically save historical data according to the set time interval and supports functions such as curve plotting and alarm setting. When the metering pump has multiple drive shafts, the speed measuring gear assembly 4 can be installed on multiple drive shafts respectively. The proximity switch 3 and the signal transmitter 2 are installed on one side of each speed measuring gear assembly 4 respectively. Multiple signal transmitters 2 and one paperless recorder 1 are sufficient.

[0027] Example 2

[0028] Please refer to Figure 3 and Figure 4 To facilitate the disassembly and assembly of the device, the speed measuring gear assembly 4 adopts a modular design, which allows for quick disassembly and installation, and convenient maintenance and replacement.

[0029] Specifically, the speed measuring gear assembly 4 includes a pair of fixed sleeves 41, which are fixed to the drive shaft of the metering pump by bolts. Each fixed sleeve 41 has a symmetrical threaded hole 43 on its inner side. The bolts pass through the threaded hole 43 to fix the fixed sleeve 41 to the drive shaft of the metering pump, which improves the stability of the fixed sleeve 41 and also facilitates the disassembly and assembly of the fixed sleeve 41.

[0030] Furthermore, a pair of gear rings 44 are fitted on the outer side of the two fixing sleeves 41, and bolts are connected between the pair of gear rings 44. The inner size of the gear rings 44 is slightly larger than the diameter of the fixing sleeves 41 to ensure that the two half gear rings 44 fit tightly after fixing and to ensure their accuracy.

[0031] In addition, each gear ring 44 has a keyway 45 on its inner side and a key block 42 on its outer side. The key block 42 is inserted into the keyway 45. The tight fit between the key block 42 and the keyway 45 can effectively transmit torque and avoid slippage caused by insufficient friction, thus ensuring the reliability of power transmission. A threaded hole 46 is opened in the keyway 45. The bolt passes through the threaded hole 46 to fix the gear ring 44 to the fixed sleeve 41. This not only further enhances the connection strength between the two, but also allows it to withstand greater axial and radial loads, thus improving the stability of the entire device.

[0032] This design makes the connection between the gear ring 44 and the retaining sleeve 41 more modular, facilitating disassembly and replacement. When maintenance or replacement of parts is required, the gear ring 44 can be easily removed simply by loosening the bolts, simplifying maintenance work.

[0033] In summary, the working principle of the metering pump real-time speed monitoring and recording device of this utility model embodiment is as follows: By adding a detachable speed measuring gear assembly 4 to the metering pump drive shaft, the speed is measured and recorded in real time using a proximity switch 3, a signal transmitter 2, and a paperless recorder 1. This allows for verification of the TMT metering pump speed control system, and historical curves can be viewed to check for abnormalities in the metering pump speed, promptly identifying metering pump speed faults and ensuring that all product indicators are normal. Furthermore, the speed measuring gear assembly 4 is designed as two modules: a fixed sleeve 41 and a gear ring 44, facilitating its disassembly and assembly. Using this metering pump real-time speed monitoring and recording device, the speed of a metering pump in this workshop was measured to be 11.79 ± 0.02 rpm, while the metering pump speed was set to 11.82 rpm, showing a small error, proving that the device is usable.

[0034] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A metering pump real-time speed monitoring and recording device, characterized in that: The device includes a paperless recorder (1), a signal transmitter (2), a proximity switch (3), and a speed measuring gear assembly (4). The speed measuring gear assembly (4) is fixedly mounted on the drive shaft of the metering pump. The proximity switch (3) is mounted on the frame of the metering pump and located on one side of the speed measuring gear assembly (4). The output line of the proximity switch (3) is connected to the input terminal of the signal transmitter (2), and the output terminal of the signal transmitter (2) is connected to the paperless recorder (1).

2. The metering pump real-time speed monitoring and recording device according to claim 1, characterized in that: The speed measuring gear assembly (4) includes a pair of fixing sleeves (41), which are fixed to the drive shaft of the metering pump by bolts.

3. The metering pump real-time speed monitoring and recording device according to claim 2, characterized in that: Each of the fixed sleeves (41) has a symmetrical threaded hole (43) on its inner side. The bolt passes through the threaded hole (43) to fix the fixed sleeve (41) to the drive shaft of the metering pump.

4. The metering pump real-time speed monitoring and recording device according to claim 2, characterized in that: A pair of gear rings (44) are fitted on the outer sides of the two fixed sleeves (41), and a bolt is connected between the pair of gear rings (44).

5. The metering pump real-time speed monitoring and recording device according to claim 4, characterized in that: The inner diameter of the gear ring (44) is slightly larger than the diameter of the fixed sleeve (41).

6. The metering pump real-time speed monitoring and recording device according to claim 4, characterized in that: Each gear ring (44) has a keyway (45) on its inner side, and each fixing sleeve (41) has a key block (42) on its outer side, with the key block (42) inserted into the keyway (45).

7. The metering pump real-time speed monitoring and recording device according to claim 6, characterized in that: The keyway (45) has a threaded hole (46) inside, and the bolt passes through the threaded hole (46) to fix the gear ring (44) on the fixing sleeve (41).

8. The metering pump real-time speed monitoring and recording device according to claim 1, characterized in that: The speed measuring gear assembly (4) can be configured as multiple, and each speed measuring gear assembly (4) is equipped with a proximity switch (3) and a signal transmitter (2) on one side, and multiple signal transmitters (2) are connected to the paperless recorder (1).

9. The metering pump real-time speed monitoring and recording device according to claim 1, characterized in that: The proximity switch (3) is model E2EH-X3C1.

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