Spinning metering pump life detection sensor

Abstract

This application relates to a life detection sensor for a spinning metering pump, belonging to the field of mechanical testing technology. It includes a metering pump body, a sealing sleeve, a pressure cap, and a housing assembly stacked on top of the metering pump body. The housing assembly houses a neodymium iron boron magnet arranged axially along the main shaft, a sensor circuit board, and a motor coil. The sensor circuit board integrates a vibration signal acquisition module and a temperature sensing element. The motor coil is arranged around the neodymium iron boron magnet and electrically connected to the sensor circuit board. The device can accurately monitor key parameters of the metering pump, adapting to the harsh environment of chemical fiber production and providing a reliable data foundation for intelligent operation and maintenance. It achieves self-generation through the magnetoelectric conversion between the neodymium iron boron magnet and the motor coil, ensuring continuous operation for extended periods without external power. By transmitting data in real time and combining it with AI large-scale model analysis, it can quickly identify abnormal operating conditions and provide early warnings of pump wear, bearing failure, and other faults.

Description

Technical Field

[0001] This application relates to the field of mechanical testing technology, and in particular to a life detection sensor for spinning metering pumps. Background Technology

[0002] In the chemical fiber textile industry, metering pumps are key components of production lines, and their performance directly determines the consistency of chemical fiber product quality and production efficiency. In recent years, with the global textile industry's transformation towards high-end and intelligent manufacturing, my country's chemical fiber industry has continued to expand, leading to an explosive growth in market demand for high-precision and high-reliability metering pumps. Metering pumps play a crucial role in the entire chemical fiber textile production process, from the precise metering and delivery of polymer melts in the spinning stage to the quantitative addition of dyes and auxiliaries in the dyeing and finishing stage, all of which rely on the stable operation of metering pumps.

[0003] In the traditional chemical fiber textile industry, the common method for monitoring metering pumps is to capture basic parameters such as inlet and outlet pressure and flow rate. This approach is based on a macroscopic control of the overall operation of the metering pump, using changes in inlet and outlet pressure and flow rate to roughly determine whether the pump is operating normally. However, this monitoring method is relatively simple and basic, only reflecting partial information about the pump's operation. Furthermore, the traditional maintenance model is "reactive," meaning repairs are only carried out after a malfunction occurs. This approach is often reactive and cannot prevent malfunctions from happening in advance.

[0004] Therefore, in view of the above situation, there is an urgent need to develop a life detection sensor for spinning metering pumps to overcome the shortcomings in current practical applications. Summary of the Invention

[0005] To address the shortcomings of the aforementioned technologies, this application provides a life detection sensor for spinning metering pumps.

[0006] The spinning metering pump life detection sensor provided in this application adopts the following technical solution: A life detection sensor for a spinning metering pump includes a metering pump body, a sealing sleeve, a pressure cap, and a housing assembly stacked on top of the metering pump body. The housing assembly contains a neodymium iron boron magnet arranged axially along the main shaft, a sensor circuit board, and a motor coil. The sensor circuit board integrates a vibration signal acquisition module and a temperature sensing element. The motor coil is arranged around the neodymium iron boron magnet and electrically connected to the sensor circuit board.

[0007] Beneficial effects: The device can accurately monitor key parameters of metering pumps, adapt to the harsh environment of chemical fiber production, and provide a reliable data foundation for intelligent operation and maintenance; it achieves self-generation by using the magnetoelectric conversion between neodymium iron boron magnets and motor coils, ensuring long-term continuous operation without external power supply; it is deeply matched to the working conditions of chemical fiber production, uses weather-resistant materials, and highly integrates power generation devices, IoT transmission modules, temperature sensing elements, and vibration sensors to achieve integrated acquisition of multiple parameters, with a compact structure and easy installation; it can accurately capture the vibration spectrum, speed, and temperature gradient changes of key components of metering pumps, and through real-time data transmission and AI large-scale model analysis, it can quickly identify abnormal operating conditions, generate accurate fault warnings and maintenance suggestions, and assist in preventive operation and maintenance; it does not require an external power supply, utilizes electromagnetic induction for self-powered operation, has a compact structure, and is easy to integrate into existing metering pump structures; it can provide early warnings of pump body wear, bearing failure, and other faults.

[0008] In one optional embodiment, the neodymium iron boron magnet is fixed to the outer periphery of the main shaft by alternating positioning of an elastic fixing ring and a rigid fixing ring, wherein the elastic fixing ring is made of high-temperature resistant rubber.

[0009] Beneficial effects: The device can monitor the vibration, speed, and temperature of the spinning metering pump in multiple dimensions. It can accurately capture the vibration spectrum, speed, and temperature gradient changes of key components of the metering pump and transmit the data in real time. Combined with AI big data model, it can analyze the data to identify abnormal operating conditions and generate fault warnings and maintenance suggestions. Among them, the neodymium iron boron magnet is fixed to the outer circumference of the main shaft by alternating positioning of elastic and rigid fixing rings. The elastic fixing ring is made of high temperature resistant rubber, which can ensure the stable operation of the neodymium iron boron magnet in high temperature environment, ensure the stability of magnetoelectric conversion, and thus ensure the reliable operation of the device's self-generating function and the accuracy of monitoring various parameters of the metering pump. The alternating elastic and rigid fixing method not only ensures the positioning accuracy of the magnet, but also absorbs the vibration and thermal expansion stress of the main shaft, preventing the magnet from shifting or falling off, and improving the reliability of the sensor under high temperature and high speed conditions.

[0010] In one optional implementation, the sensor circuit board also integrates a rectifier circuit and an energy storage module, wherein the energy storage module stores energy through an electromagnetic induction circuit formed by the motor coil and the neodymium iron boron magnet.

[0011] Beneficial effects: The life detection sensor device for spinning metering pumps has self-generating and long-endurance capabilities. It can generate its own power by utilizing the vibration of the metering pump itself through the principle of electromagnetic induction. It can operate continuously for a long time without external power supply, making it suitable for the complex power supply environment of chemical fiber production sites.

[0012] In one alternative embodiment, the top of the housing assembly extends a data transmission interface, which is connected to the sensor circuit board and adapted to 5G or industrial IoT communication protocols.

[0013] Beneficial effects: The device includes a metering pump body, a sealing sleeve, a gland, and a housing assembly. The housing assembly houses a neodymium iron boron magnet, a sensor circuit board, and a motor coil. The sensor circuit board integrates a vibration signal acquisition module and a temperature sensing element, enabling the acquisition of multiple parameters such as vibration and temperature data from the spinning metering pump. Furthermore, a data transmission interface extending from the top of the housing assembly connects to the sensor circuit board and is compatible with 5G or industrial IoT communication protocols. This ensures that the data collected by the sensor is transmitted to the intelligent management platform in real time and stably, supporting remote real-time monitoring and big data analysis. This further assists in identifying abnormal operating conditions of the spinning metering pump, providing fault warnings, and formulating maintenance strategies, facilitating predictive maintenance. High-speed wireless transmission reduces on-site wiring and meets the data integration needs of smart factories.

[0014] In one alternative embodiment, the sealing sleeve and the gland form a closed cavity, and the inner wall of the closed cavity is provided with a corrosion-resistant lining, which is composed of a composite of fluororubber and ceramic fiber.

[0015] Beneficial effects: This spinning metering pump life detection sensor device can accurately collect and monitor key data such as the pump's rotation speed, vibration spectrum, and temperature gradient changes. It achieves self-generation through magnetoelectric conversion and can operate continuously for a long time without external power supply. At the same time, the sealed cavity and the corrosion-resistant liner composed of fluororubber and ceramic fiber composite can isolate corrosive media in chemical fiber production, protect the internal sensing components, and significantly improve the durability of the sensor in high-temperature and corrosive spinning environments. This makes the device more suitable for the harsh working conditions of chemical fiber production, which are characterized by "high temperature, high load, and corrosiveness," prevents media from penetrating and damaging electronic components, and extends the sensor's service life.

[0016] In one optional implementation, the vibration signal acquisition module includes a piezoelectric accelerometer and a harmonic analysis circuit, wherein the harmonic analysis circuit is electrically connected to the main control chip of the sensor circuit board.

[0017] Beneficial effects: This life detection sensor device for spinning metering pumps includes a metering pump body, a sealing sleeve, a gland, and a housing assembly. The housing assembly contains a neodymium iron boron magnet arranged axially along the main shaft, a sensor circuit board, and a motor coil. The sensor circuit board integrates a vibration signal acquisition module and a temperature sensing element. The motor coil is arranged around the neodymium iron boron magnet and electrically connected to the sensor circuit board. The vibration signal acquisition module includes a piezoelectric accelerometer and a harmonic analysis circuit. The harmonic analysis circuit is electrically connected to the main control chip of the sensor circuit board. This allows for accurate capture of the vibration spectrum information of key components such as the metering pump's main shaft and rotor. Combined with an AI large-scale model, multi-dimensional data analysis can quickly identify abnormal operating conditions such as gear wear, generating accurate fault warnings and maintenance suggestions to facilitate preventative maintenance.

[0018] In one alternative embodiment, the temperature sensing element is arranged in a distributed manner, including at least three contact thermistor arrays, which are respectively attached to the bearing portions of the rotor, stator, and main shaft of the metering pump body.

[0019] Beneficial Effects: This lifespan monitoring sensor for spinning metering pumps features a multi-layered stacked structure. The housing integrates neodymium iron boron magnets, a sensor circuit board, and a motor coil. The sensor circuit board integrates a vibration signal acquisition module and a temperature sensing element. The motor coil surrounds the neodymium iron boron magnet and is electrically connected to the sensor circuit board, enabling monitoring of the metering pump's vibration and temperature. Simultaneously, the temperature sensing element employs a distributed arrangement, comprising at least three contact thermistor arrays respectively attached to the rotor, stator, and main shaft bearings of the metering pump body. This allows for precise capture of temperature gradient changes in these critical components, providing more accurate data for subsequent analysis of multi-dimensional data using AI models. This enables rapid identification of abnormal operating conditions, generation of accurate fault warnings and maintenance recommendations, and facilitates preventative maintenance.

[0020] In one optional embodiment, the motor coil is wound on an insulating frame, and at least two annular sealing grooves are provided between the insulating frame and the inner wall of the housing assembly, with O-rings provided in the sealing grooves.

[0021] Beneficial effects: This life detection sensor device for spinning metering pumps includes a metering pump body, a sealing sleeve, a gland, a housing assembly, a neodymium iron boron magnet, a sensor circuit board, and a motor coil. The sensor circuit board integrates a vibration signal acquisition module and a temperature sensing element. The motor coil is arranged around the neodymium iron boron magnet and electrically connected to the sensor circuit board, enabling multi-dimensional monitoring of the metering pump's vibration, speed, and temperature. Furthermore, the motor coil is wound on an insulating frame, and at least two annular sealing grooves with built-in O-rings are provided between the insulating frame and the inner wall of the housing assembly, further enhancing the sealing performance of the motor coil and preventing external corrosive media from entering and affecting the normal operation of the motor coil, thus ensuring the stable operation of the sensor device.

[0022] In one alternative embodiment, the surface of the sensor circuit board is covered with a nano-coating with a thickness of 5-20 μm to isolate molten vapor from corrosive media.

[0023] Beneficial effects: The device can isolate molten vapor from corrosive media, protect the sensor circuit board, and ensure its stable operation in harsh environments, making it suitable for the demanding working conditions of chemical fiber production.

[0024] In one optional embodiment, the bottom of the housing assembly is provided with a snap-on quick-release structure, the quick-release structure including a wedge-shaped claw that matches the pressure cap and a locking bolt, the locking bolt penetrating vertically through the top of the housing assembly.

[0025] Beneficial effects: The device features a multi-level stacked structure, consisting of a metering pump body, a sealing sleeve, a pressure cap, and an outer casing assembly. The outer casing assembly houses a neodymium iron boron magnet, a sensor circuit board, and a motor coil. The sensor circuit board integrates a vibration signal acquisition module and a temperature sensing element. The motor coil surrounds the neodymium iron boron magnet and is electrically connected to the sensor circuit board. Furthermore, the bottom of the outer casing assembly features a snap-on quick-release structure, including wedge-shaped claws and locking bolts. This allows the device to adapt to the harsh environments of chemical fiber production, accurately monitor key parameters of the metering pump, perform intelligent diagnostics, and generate its own power. The snap-on quick-release structure facilitates rapid installation and removal of the outer casing assembly and pressure cap, simplifying maintenance and replacement.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. It has a self-generating function. The motor coil is set around the neodymium iron boron magnet and electrically connected to the sensor circuit board. It uses the principle of electromagnetic induction and the metering pump itself vibrates to generate electricity, ensuring that it can continue to operate for a long time without external power supply. 2. Highly customized and highly integrated, it uses weather-resistant materials such as neodymium iron boron magnets and elastic retaining rings made of high-temperature resistant rubber to deeply match the harsh working conditions of chemical fiber production, which are characterized by "high temperature, high load, and corrosiveness". At the same time, it highly integrates motor coils, temperature sensing elements and vibration signal acquisition modules to achieve multi-parameter integrated acquisition. The structure is compact and easy to install. 3. It can accurately monitor the vibration signal acquisition module and temperature sensing element integrated by the sensor circuit board, which can accurately capture the vibration spectrum, speed and temperature gradient changes of key components of the metering pump. Combined with the intelligent management platform, it can analyze multi-dimensional data, quickly identify abnormal operating conditions, generate accurate fault warnings and maintenance suggestions, and help preventive operation and maintenance. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure provided in the embodiments of this application; Figure 2 This is a cross-sectional structural diagram provided in an embodiment of this application.

[0028] Explanation of reference numerals in the attached drawings: 1. Metering pump body; 2. Sealing sleeve; 3. Gland; 4. Housing assembly; 5. Main shaft; 6. Neodymium iron boron magnet; 7. Sensor circuit board; 8. Motor coil; 9. Retaining ring. Detailed Implementation

[0029] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0032] Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0033] The present invention provides the following embodiments:

[0034] This application discloses a life detection sensor for a spinning metering pump, referring to... Figure 1 , Figure 2 The system includes a metering pump body 1, a sealing sleeve 2, a pressure cap 3, a housing assembly 4, a neodymium iron boron magnet 6, a sensor circuit board 7, and a motor coil 8. The sealing sleeve 2, pressure cap 3, and housing assembly 4 are stacked on top of the metering pump body 1. The housing assembly 4 houses the neodymium iron boron magnet 6, the sensor circuit board 7, and the motor coil 8, which are arranged axially along the main shaft 5. The motor coil 8 is arranged around the neodymium iron boron magnet 6 and electrically connected to the sensor circuit board 7. This achieves the effect of accurately monitoring multiple parameters of the metering pump, such as vibration, speed, and temperature. This is because the components work together. The neodymium iron boron magnet 6 converts mechanical rotational motion into magnetic signals. The motor coil 8 generates electricity by cutting magnetic field lines. The sensor circuit board 7 collects and processes the signals, thereby obtaining the key operating data of the metering pump.

[0035] Specifically, the metering pump body 1 is rectangular and is the core working unit of the metering pump, responsible for the metering and conveying of chemical fiber media, such as melts and dyes. The metering pump body 1 is generally made of high-strength metal materials, such as stainless steel. This material has good corrosion resistance and mechanical strength, and can adapt to the high temperature and corrosive environment in chemical fiber production. Of course, other metal alloy materials with similar properties can also be selected according to actual needs. The sealing sleeve 2 is cylindrical and wraps around the key parts of the pump body. It is usually made of temperature-resistant and wear-resistant rubber materials, such as nitrile rubber, which protects the key parts of the pump body and provides a certain sealing function. Other rubber materials such as silicone rubber can also be used as substitutes, as long as they can meet the requirements of high temperature resistance and sealing. The sealing sleeve 2 is tightly fitted to the metering pump body 1 and connected by interference fit or sealant to ensure good sealing performance. The gland 3 is disc-shaped and is used to press the sealing sleeve 2 to ensure the sealing effect of the sealing sleeve 2. The gland 3 is generally made of metal, such as aluminum alloy, which is lightweight and has a certain strength. It is fixed to the metering pump body 1 by bolts and other connecting parts, pressing the sealing sleeve 2 tightly onto the metering pump body 1. In some cases, a plastic gland 3 can also be used, provided that its strength and temperature resistance can meet the usage requirements.

[0036] The outer casing assembly 4 is a hollow box that houses the core components of the sensor. It is generally made of engineering plastics or metal materials, such as polycarbonate plastics or stainless steel. Engineering plastics have advantages such as light weight and low cost, while stainless steel has better corrosion resistance and strength. The outer casing assembly 4 is connected to the cover 3 by bolts or buckles to form a relatively closed space to protect the internal components. The neodymium iron boron magnet 6 uses the N48SH model and is associated with the spindle 5 or moving parts. Its function is to convert mechanical rotational motion into magnetic signal changes. This type of magnet has the characteristic of high magnetic energy product, which can more effectively realize magnetoelectric conversion. When selecting magnets, you can also refer to the "Permanent Magnet Material Application Handbook" to select other models of high-performance neodymium iron boron magnets 6. The neodymium iron boron magnet 6 is positioned and fixed on the outer periphery of the spindle 5 by alternating positioning of the elastic fixing ring 9 and the rigid fixing ring 9. The elastic fixing ring 9 is made of high temperature resistant rubber material, such as fluororubber, which is more suitable. It can maintain good elasticity and fixation effect in high temperature environment and prevent the magnet from shifting during vibration. The rigid fixing ring 9 is generally made of metal, such as copper or stainless steel, which plays an auxiliary positioning and reinforcement role.

[0037] The sensor circuit board 7 is a circular board that carries rectification, boost, energy storage, temperature sensing elements, and vibration signal acquisition and transmission circuits. It mainly consists of a printed circuit board and various electronic components soldered on it. The printed circuit board is usually made of FR-4 material, which has good insulation performance and mechanical strength. The sensor circuit board 7 integrates a vibration signal acquisition module and a temperature sensing element, which is responsible for acquiring vibration and temperature signals and initially processing them into electrical signals. The vibration signal acquisition module includes a piezoelectric accelerometer and a harmonic analysis circuit. The piezoelectric accelerometer can sensitively detect the vibration signal of the metering pump and then convert it into an electrical signal. The harmonic analysis circuit analyzes and processes these signals to obtain more accurate vibration spectrum information. The harmonic analysis circuit is electrically connected to the main control chip of the sensor circuit board 7 to realize signal transmission and processing. The temperature sensing elements are arranged in a distributed manner, including at least three contact thermistor arrays. These thermistor arrays are respectively attached to the rotor, stator, and main shaft 5 bearings of the metering pump body 1, enabling real-time and accurate acquisition of temperature information from these key components and conversion into temperature electrical signals. The sensor circuit board 7 also integrates a rectifier circuit and an energy storage module. The rectifier circuit converts the AC power generated by the motor coil 8 into DC power, and the energy storage module stores electrical energy to ensure that the sensor device can still operate normally without external power supply. The energy storage module can be in the form of supercapacitors or batteries, and they achieve energy storage through the electromagnetic induction circuit formed by the motor coil 8 and the neodymium iron boron magnet 6. In addition, the surface of the sensor circuit board 7 is covered with a nano-coating with a thickness of 5-20μm to isolate molten vapor and corrosive media, protecting the electronic components on the circuit board from damage. The nano-coating can be made of nanomaterials such as silicon dioxide, which has good moisture-proof and corrosion-proof properties.

[0038] The motor coil 8 is wound around an insulating frame, which is typically made of insulating materials such as plastic or ceramic, providing support and fixation for the motor coil 8. At least two annular sealing grooves are provided between the insulating frame and the inner wall of the outer shell assembly 4, with O-rings embedded in the grooves. This design prevents external dust and moisture from entering around the motor coil 8, affecting its performance and lifespan. The O-rings are generally made of rubber, offering good elasticity and sealing performance. A data transmission interface extends from the top of the outer shell assembly 4, connecting to the sensor circuit board 7 and adapting to 5G or industrial IoT communication protocols. Through this data transmission interface, the data collected and processed by the sensor circuit board 7 can be transmitted to a remote intelligent management platform in real time and stably. Additionally, the sealing sleeve 2 and the pressure cap 3 form a closed cavity, with a corrosion-resistant lining on the inner wall of the cavity, composed of a composite of fluororubber and ceramic fiber. This corrosion-resistant lining can effectively isolate corrosive media in chemical fiber production, protecting the metering pump body 1 and the internal sensing components. The bottom of the housing assembly 4 is equipped with a snap-on quick-release structure, which includes a wedge-shaped claw that matches the gland 3 and a locking bolt. The locking bolt penetrates vertically through the top of the housing assembly 4. Through this snap-on quick-release structure, the sensor device can be installed and removed conveniently and quickly, facilitating daily maintenance and repair.

[0039] The implementation principle of this embodiment is as follows: The spinning metering pump life detection sensor device, through a multi-level stacked structure design, tightly and orderly combines various components, adapting to the harsh environment of chemical fiber production. The components work collaboratively; the neodymium iron boron magnet 6 and the motor coil 8 utilize electromagnetic induction to generate their own power, ensuring the device can operate continuously for extended periods without external power. The sensor circuit board 7 integrates multiple functional modules, accurately collecting multi-dimensional parameters such as vibration, speed, and temperature of the metering pump, and transmitting the data in real time to the intelligent management platform via a data transmission interface. Combined with the AI ​​large-scale model analysis of the intelligent management platform, abnormal operating conditions can be quickly identified, generating accurate fault warnings and maintenance suggestions. This achieves preventative maintenance of the metering pump, significantly reducing the failure rate and shortening production line downtime, bringing significant economic benefits to chemical fiber textile enterprises. Compared to traditional monitoring and maintenance methods, this represents a significant improvement.

[0040] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this application.

Claims

1. A life detection sensor for a spinning metering pump, characterized in that: The device includes a metering pump body (1), a sealing sleeve (2), a pressure cap (3), and a housing assembly (4) stacked on top of the metering pump body (1). The housing assembly (4) contains a neodymium iron boron magnet (6), a sensor circuit board (7), and a motor coil (8) arranged axially along the main shaft (5). The sensor circuit board (7) integrates a vibration signal acquisition module and a temperature sensing element. The motor coil (8) is arranged around the neodymium iron boron magnet (6) and electrically connected to the sensor circuit board (7).

2. The spinning metering pump life detection sensor according to claim 1, characterized in that: The neodymium iron boron magnet (6) is fixed to the outer periphery of the main shaft (5) by alternating positioning of the elastic fixing ring (9) and the rigid fixing ring (9). The elastic fixing ring (9) is made of high temperature resistant rubber.

3. The life detection sensor for the spinning metering pump according to claim 1, characterized in that: The sensor circuit board (7) also integrates a rectifier circuit and an energy storage module. The energy storage module achieves energy storage through the electromagnetic induction circuit formed by the motor coil (8) and the neodymium iron boron magnet (6).

4. The spinning metering pump life detection sensor according to claim 1, characterized in that: The top of the housing assembly (4) has a data transmission interface, which is connected to the sensor circuit board (7) and adapted to 5G or industrial IoT communication protocols.

5. The spinning metering pump life detection sensor according to claim 1, characterized in that: The sealing sleeve (2) and the pressure cap (3) form a closed cavity. The inner wall of the closed cavity is provided with a corrosion-resistant lining, which is composed of fluororubber and ceramic fiber composite.

6. The spinning metering pump life detection sensor according to claim 1, characterized in that: The vibration signal acquisition module includes a piezoelectric accelerometer and a harmonic analysis circuit, and the harmonic analysis circuit is electrically connected to the main control chip of the sensor circuit board (7).

7. The spinning metering pump life detection sensor according to claim 1, characterized in that: The temperature sensing element is arranged in a distributed manner, including at least three contact thermistor arrays, which are respectively attached to the rotor, stator and main shaft (5) bearing parts of the metering pump body (1).

8. The life detection sensor for the spinning metering pump according to claim 1, characterized in that: The motor coil (8) is wound on an insulating frame, and at least two annular sealing grooves are provided between the insulating frame and the inner wall of the outer shell connector (4), and O-rings are provided in the sealing grooves.

9. The life detection sensor for the spinning metering pump according to claim 1, characterized in that: The sensor circuit board (7) is covered with a nano-coating with a thickness of 5-20 μm, which is used to isolate melt vapor and corrosive media.

10. The spinning metering pump life detection sensor according to claim 1, characterized in that: The bottom of the outer shell connector (4) is provided with a snap-on quick-release structure, which includes a wedge-shaped claw that matches the cover (3) and a locking bolt. The locking bolt penetrates vertically through the top of the outer shell connector (4).

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