Vertical spiral stirring mill electric fault detection device

Abstract

This invention relates to the field of industrial equipment fault detection technology, and discloses a vertical spiral stirring mill live fault detection device, comprising: a housing; a detection head, detachably mounted on one end of the housing, for contacting and fixing to the circuit under test; a circuit board, disposed inside the housing, integrating a main control chip, a detection circuit module, a wireless communication module, and a data processing module; a power supply, disposed inside the housing and electrically connected to the circuit board; and an insulating rod, detachably mounted on the other end of the housing. This invention allows the detection head to be fixed to the circuit under test, enabling real-time detection of the circuit through the detection circuit module, reducing the loss of manpower, material resources, and financial resources; and it can be carried by the insulating rod, improving portability and flexibility.

Description

Technical Field

[0001] This invention relates to the field of industrial equipment fault detection technology, and more specifically, to a device for detecting electrical faults in a vertical spiral stirred mill. Background Technology

[0002] In modern mining production, the vertical spiral stirred mill is a highly efficient grinding equipment. It uses an agitator to drive the grinding media to grind materials and is widely used in mineral processing, cement production, and other fields. Vertical spiral stirred mills typically operate under high-intensity, continuous conditions in complex environments, often accompanied by high vibration, high humidity, and dust. During long-term operation, the mill's drive motor, electrical control system, and related power lines are highly susceptible to insulation aging, overload, poor contact, or mechanical damage, which can lead to electrical faults (such as leakage, partial discharge, and three-phase imbalance).

[0003] Currently, the main shortcomings in fault detection for the electrical control system of vertical spiral stirred mills are as follows: **Lag:** Traditional detection devices often only activate after a severe short circuit or trip, acting as a reactive measure and failing to provide early warning of potential "live faults." This can easily lead to unplanned downtime and significant economic losses. **Poor Interference Resistance:** Vertical spiral stirred mills generate severe mechanical vibrations and strong electromagnetic interference during operation. Existing general-purpose detection devices are prone to false alarms or missed alarms under complex operating conditions, making it difficult to accurately capture weak early fault signals. **High Dependence on Manual Labor:** Some detection still relies on manual periodic inspections using megohmmeters or infrared thermal imagers. Since the mill is typically energized, manual live-line inspection is risky, inefficient, and cannot achieve 24-hour online monitoring. **Poor Environmental Adaptability:** Existing detection equipment is prone to sensor and electronic component failure in the high-temperature, humid, and dusty grinding workshop, resulting in high maintenance costs. **Inconvenient Portability:** Existing online monitoring systems are large and heavy, making them inconvenient for mobile detection in the mine and unable to meet the needs of rapid on-site detection.

[0004] Therefore, it is necessary to provide a vertical spiral stirred mill electrical fault detection device to solve the problems of current detection devices being inconvenient to carry and unable to perform real-time electrical fault detection on the equipment. Summary of the Invention

[0005] In view of this, the present invention proposes a vertical spiral stirring mill live fault detection device, which aims to solve the problems of current detection devices being inconvenient to carry and unable to perform live fault detection on the equipment in real time.

[0006] This invention proposes a device for detecting electrical faults in a vertical spiral stirred mill, comprising: shell; The detection head is detachably mounted on one end of the housing for contacting the circuit to be tested and can be fixed to the circuit to be tested; A circuit board is disposed inside the housing, and the circuit board integrates a main control chip, a detection circuit module, a wireless communication module and a data processing module; The power supply is located inside the housing and is electrically connected to the circuit board. An insulating rod is detachably mounted to the other end of the housing; The detection circuit module and the detection head are electrically connected and used to acquire circuit signals in real time. The data processing module is electrically connected to the detection circuit module and is used to acquire the electrical signals acquired by the detection circuit module and determine whether the circuit is in an abnormal state. The main control chip is electrically connected to the detection circuit module, the wireless communication module and the data processing module respectively, and is used to control the wireless communication module to send information to the background when it is determined that the circuit is in an abnormal state.

[0007] Furthermore, the detection head is a replaceable component, and the end that contacts the circuit to be tested has a hook-shaped, needle-shaped, ring-shaped, or clamp-shaped structure.

[0008] Furthermore, an alarm module is also integrated on the circuit board; The alarm module is electrically connected to the main control chip, and the main control chip is also used to control the alarm module to issue an alarm when it is determined that the circuit has an abnormal state.

[0009] Furthermore, the alarm module is an audible and visual alarm module, including an LED indicator and a buzzer electrically connected to the circuit board.

[0010] Furthermore, the circuit board is also provided with a battery compartment, and the power supply is located inside the battery compartment.

[0011] Further, the housing includes: Detachable and snap-on top and back covers; A battery cover for closing the battery compartment, the battery cover being detachably mounted on the top cover.

[0012] Furthermore, a metal connector is embedded at the other end of the outer casing, and the insulating rod is detachably connected to the outer casing through the metal connector.

[0013] Furthermore, the metal connector is a copper stud.

[0014] Furthermore, the insulating rod includes: Inner shaft column; An outer bushing is fitted onto the outer wall of the inner shaft column and slides in conjunction with the inner shaft column; The inner fiberglass tube is fixedly sleeved on the outer wall of the outer bushing; An outer fiberglass tube is fixedly sleeved on the outer wall of the inner fiberglass tube; The handle is fixedly sleeved on the outer wall of the outer fiberglass tube; A stop pin is provided between the handle, the outer fiberglass tube and the inner fiberglass tube to prevent relative shaking of the handle, the outer fiberglass tube and the inner fiberglass tube. A buffer pad is provided on the inner bottom surface of the handle to reduce the impact force on the handle when the inner shaft retracts.

[0015] Furthermore, the circuit board is encapsulated with epoxy resin.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: A housing 2 is provided, and a detection head 1 is detachably installed at one end of the housing 2. The detection head 1 can be fixed to the circuit to be tested and used to contact the circuit. A circuit board 4 is placed inside the housing 2, and a main control chip 41, a detection circuit module 42, a wireless communication module 43, and a data processing module 44 are integrated on the circuit board 4. The detection circuit module 42 is electrically connected to the detection head 1 and can collect circuit signals in real time. The data processing module 44 is electrically connected to the detection circuit module 42 and can acquire the electrical signals collected by the detection circuit module 42 and determine whether the circuit is in an abnormal state. The main control chip 41 is electrically connected to the detection circuit module 42, the wireless communication module 43, and the data processing module 44 respectively, and can control the wireless communication module 43 to send information to the background when an abnormal state is determined to occur in the circuit. A power supply 471 is placed inside the housing 2 and electrically connected to the circuit board 4, allowing power to be supplied to the main control chip 41, the detection circuit module 42, the wireless communication module 43, and the data processing module 44 through the circuit board 4. By detachably mounting the insulating rod 3 to the other end of the housing 2, it is easy to carry the testing device and to fix the testing head 1 to the circuit to be tested, or to remove the testing head 1 from the circuit to be tested.

[0017] In summary, the present invention has the advantages of high portability, ease of use, and the ability to perform real-time energized detection of circuits and analyze whether any abnormalities occur. Attached Figure Description

[0018] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 This is a schematic diagram of the structure of the vertical spiral stirred mill electrical fault detection device provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the detection head provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the connection between the detection head and the circuit to be detected provided in an embodiment of the present invention; Figure 4 An exploded view of the vertical spiral stirred mill electrical fault detection device provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the circuit board structure provided in an embodiment of the present invention; Figure 6 This is a cross-sectional view of an insulating rod provided in an embodiment of the present invention.

[0019] The components include: 1. Detection head; 11. Hook; 12. Washer; 13. Spring washer; 14. Nut; 2. Outer shell; 21. Top cover; 211. Battery cover; 212. Phillips head countersunk screw; 22. Back cover; 221. Phillips head pan head self-tapping screw; 222. Identification plate; 23. Control switch; 24. Metal connector; 241. Phillips head pan head screw; 3. Insulating rod; 31. Buffer washer; 32. Stop pin; 33. Inner shaft post; 34. Outer shaft sleeve; 35. Inner fiberglass tube; 36. Outer fiberglass tube; 37. Handle; 4. Circuit board; 41. Main control chip; 42. Detection circuit module; 43. Wireless communication module; 44. Data processing module; 45. Buzzer; 46. LED indicator; 47. Battery compartment; 471. Power supply. Detailed Implementation

[0020] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specified, embodiments and features in the embodiments of the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] In some embodiments of this application, see Figure 1-6 As shown, this embodiment provides a vertical spiral stirring mill electrical fault detection device, including a housing 2, a detection head 1, a circuit board 4, a power supply 471, and an insulating rod 3.

[0022] Specifically, the detection head 1 is detachably mounted on one end of the housing 2 for contacting the circuit to be tested and can be fixed to the circuit to be tested.

[0023] Specifically, the circuit board 4 is located inside the housing 2, and the circuit board 4 integrates a main control chip 41, a detection circuit module 42, a wireless communication module 43, and a data processing module 44.

[0024] Specifically, the power supply 471 is located inside the housing 2 and is electrically connected to the circuit board 4. The power supply 471 is connected to the circuit board 4 via wires. The main control chip 41, the detection circuit module 42, the wireless communication module 43, and the data processing module 44 are electrically connected to the power supply 471 via the circuit board 4.

[0025] Specifically, a control switch 23 is also integrated on the circuit board 4. The control switch 23 is connected between the power supply 471 and the circuit board 4, and the control switch 23 can control the on and off of the circuit.

[0026] Specifically, the insulating rod 3 is detachably mounted on the other end of the housing 2.

[0027] Specifically, the detection circuit module 42 is electrically connected to the detection head 1 and is used to acquire circuit signals in real time.

[0028] Specifically, the data processing module 44 is electrically connected to the detection circuit module 42 and is used to acquire the electrical signals collected by the detection circuit module 42 and determine whether the circuit is in an abnormal state.

[0029] Specifically, the main control chip 41 is electrically connected to the detection circuit module 42, the wireless communication module 43, and the data processing module 44, respectively, and is used to control the wireless communication module 43 to send information to the background when an abnormal state is determined to occur in the circuit.

[0030] It is understood that a housing 2 is provided, and the detection head 1 is detachably installed at one end of the housing 2. The detection head 1 can be fixed to the circuit under test and used to contact the circuit under test. A circuit board 4 is set inside the housing 2, and a main control chip 41, a detection circuit module 42, a wireless communication module 43, and a data processing module 44 are integrated on the circuit board 4. The detection circuit module 42 is electrically connected to the detection head 1 and can collect circuit signals in real time. The data processing module 44 is electrically connected to the detection circuit module 42 and can obtain the electrical signals collected by the detection circuit module 42 and determine whether the circuit has an abnormal state. The main control chip 41 is electrically connected to the detection circuit module 42, the wireless communication module 43, and the data processing module 44 respectively, and can control the wireless communication module 43 to send information to the background when an abnormal state of the circuit is determined. A power supply 471 is set inside the housing 2 and electrically connected to the circuit board 4, and can supply power to the main control chip 41, the detection circuit module 42, the wireless communication module 43, and the data processing module 44 through the circuit board 4. By detachably mounting the insulating rod 3 to the other end of the housing 2, it is easy to carry the testing device and to fix the testing head 1 to the circuit to be tested, or to remove the testing head 1 from the circuit to be tested.

[0031] In summary, the present invention has the advantages of high portability, ease of use, real-time detection of circuits under power and analysis of whether abnormal conditions occur, and reduced reliance on manual detection.

[0032] In some embodiments of the present invention, the detection head 1 is a replaceable component, and the end of it that contacts the circuit to be tested has a hook-shaped, needle-shaped, ring-shaped, or clamp-shaped structure. That is, the detection head 1 has a structure that is fixed to the circuit to be tested.

[0033] Specifically, the detection head 1 includes a detection end, a washer 12, a spring washer 13, and a nut 14. The detection end can be mounted to one end of the housing 2 using the washer 12, spring washer 13, and nut 14. The detection end has a hook-shaped, needle-shaped, ring-shaped, or clamping structure. Different shaped detection ends can be easily and quickly replaced by using the washer 12, spring washer 13, and nut 14.

[0034] See Figure 4 As shown, in some embodiments of this application, the detection head 1 is a hook-shaped structure, and the detection end is a hook 11. The hook 11 is installed on one end of the housing 2 through a washer 12, a spring washer 13 and a nut 14, and is electrically connected to the circuit board 4. In use, the user can carry this device to the field and simply hang the hook 11 on the line to complete the detection.

[0035] In some embodiments of this application, when the detection head 1 is a needle-like structure, the user can also carry the device to the field and simply attach the detection end of the needle-like structure to the circuit to be tested to perform the test.

[0036] Continue reading Figure 2 As shown, in some embodiments of this application, the detection head 1 can also be a ring-shaped structure. In use, the ring only needs to be placed on the circuit to be tested to perform real-time detection. The ring-shaped structure prevents the detection device from detaching from the circuit under test due to other conditions.

[0037] In some embodiments of this application, when the detection head 1 is a clamping structure, the user can clamp the detection end of the clamping structure onto the circuit to be tested during use, thus enabling real-time testing of the circuit. The clamping structure prevents the detection device from detaching from the circuit to be tested due to other conditions.

[0038] It is understood that when the detection end of the detection head 1 of this application is a hook-shaped or needle-shaped structure, the user can carry it to the field for testing. When the detection head is a clamp-shaped or ring-shaped structure, the user can fix it on the detection circuit for real-time testing of the circuit.

[0039] In some embodiments of the present invention, an alarm module is also integrated on the circuit board 4.

[0040] Specifically, the alarm module is electrically connected to the main control chip 41, and the main control chip 41 is also used to control the alarm module to issue an alarm when it is determined that the circuit has an abnormal state.

[0041] See Figure 5 As shown, in some embodiments of the present invention, the alarm module is an audible and visual alarm module, including an LED indicator 46 and a buzzer 45 electrically connected to the circuit board 4.

[0042] Specifically, there are several LED indicator lights 46 and buzzers 45, and they are all mounted on the circuit board 4.

[0043] Understandably, the alarm module can issue an audible and visual alarm when a circuit fault occurs. Both the LED indicator 46 and the buzzer 45 are mounted on circuit board 4, further saving space.

[0044] See Figure 5 As shown, in some embodiments of the present invention, the circuit board 4 is further provided with a battery compartment 47, and the power supply 471 is disposed in the battery compartment 47.

[0045] Understandably, the power supply 471 can be protected through the battery compartment 47.

[0046] See Figure 4 As shown, in some embodiments of the present invention, the outer casing 2 includes an upper cover 21, a rear cover 22, and a battery cover 211.

[0047] Specifically, the top cover 21 and the rear cover 22 are detachable and snap-fitted together. The top cover 21 and the rear cover 22 are secured together with Phillips head pan screws 221.

[0048] Specifically, the battery cover 211 is detachably mounted on the upper cover 21. The battery cover 211 is secured to the upper cover 21 with Phillips head countersunk screws 212. The battery cover 211 is used to close the battery compartment 47.

[0049] Specifically, the top cover 21 is also fitted with an identification plate 222.

[0050] Understandably, the detachable and snap-fit ​​design of the top cover 21 and the rear cover 22 facilitates maintenance of the internal components.

[0051] See Figure 4 As shown, in some embodiments of the present invention, a metal connector 24 is embedded at the other end of the outer shell 2, and the insulating rod 3 is detachably connected to the outer shell 2 through the metal connector 24.

[0052] Continue reading Figure 4 As shown, in some embodiments of the present invention, the metal connector 24 is a copper stud.

[0053] Understandably, the detachable connection between the insulating rod 3 and the outer casing 2 via the metal connector 24 further enhances the flexibility of this detection device and allows it to be used in different situations.

[0054] See Figure 6 As shown, in some embodiments of the present invention, the insulating rod 3 includes an inner shaft post 33, an outer shaft sleeve 34, an inner fiberglass tube 35, an outer fiberglass tube 36, a handle 37, a stop pin 32, and a buffer pad 31.

[0055] Specifically, the outer bushing 34 is fitted onto the outer wall of the inner shaft post 33 and slides in cooperation with the inner shaft post 33.

[0056] Specifically, the inner fiberglass tube 35 is fixedly sleeved on the outer wall of the outer bushing 34.

[0057] Specifically, the outer fiberglass tube 36 is fixedly sleeved on the outer wall of the inner fiberglass tube 35.

[0058] Specifically, the handle 37 is fixedly sleeved on the outer wall of the outer fiberglass tube 36.

[0059] Specifically, the stop pin 32 is located between the handle 37, the outer fiberglass tube 36, and the inner fiberglass tube 35 to prevent relative shaking of the handle 37, the outer fiberglass tube 36, and the inner fiberglass tube 35.

[0060] Specifically, a buffer pad 31 is disposed on the inner bottom surface of the handle 37 to reduce the impact force of the inner shaft 33 on the handle 37 when the inner shaft 33 retracts.

[0061] Understandably, the buffer pad 31 prevents the inner shaft 33 from impacting the bottom of the handle 37 during retraction, further increasing the service life of the insulating rod 3. The inner shaft 33 and outer bushing 34 increase the usable length of the insulating rod 3, facilitating operation. The inner fiberglass tube 35 and outer fiberglass tube 36 provide insulation, ensuring the safety of the equipment during use.

[0062] In some embodiments of the present invention, the circuit board 4 is potted with epoxy resin.

[0063] It is understandable that using epoxy resin to pot the circuit board 4 increases the anti-interference ability of this testing device, enabling it to operate in high-temperature, humid, and dusty environments.

[0064] It is understood that a housing 2 is provided, and the detection head 1 is detachably installed at one end of the housing 2. The detection head 1 can be fixed to the circuit under test and used to contact the circuit under test. A circuit board 4 is set inside the housing 2, and a main control chip 41, a detection circuit module 42, a wireless communication module 43, and a data processing module 44 are integrated on the circuit board 4. The detection circuit module 42 is electrically connected to the detection head 1 and can collect circuit signals in real time. The data processing module 44 is electrically connected to the detection circuit module 42 and can obtain the electrical signals collected by the detection circuit module 42 and determine whether the circuit has an abnormal state. The main control chip 41 is electrically connected to the detection circuit module 42, the wireless communication module 43, and the data processing module 44 respectively, and can control the wireless communication module 43 to send information to the background when an abnormal state of the circuit is determined. A power supply 471 is set inside the housing 2 and electrically connected to the circuit board 4, and can supply power to the main control chip 41, the detection circuit module 42, the wireless communication module 43, and the data processing module 44 through the circuit board 4. By detachably mounting the insulating rod 3 to the other end of the housing 2, it is easy to carry the testing device and to fix the testing head 1 to the circuit to be tested, or to remove the testing head 1 from the circuit to be tested.

[0065] In summary, the present invention has the advantages of high portability, ease of use, real-time detection of circuits under power and analysis of whether abnormal conditions occur, and reduced reliance on manual detection.

[0066] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program goods. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program goods embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0067] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program goods according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0068] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0069] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A device for detecting electrical faults in a vertical spiral stirred mill, characterized in that, include: Outer shell (2); The detection head (1) is detachably mounted on one end of the housing (2) for contacting the circuit to be tested and can be fixed to the circuit to be tested; The circuit board (4) is located inside the outer shell (2). The circuit board (4) integrates a main control chip (41), a detection circuit module (42), a wireless communication module (43) and a data processing module (44). A power supply (471) is located inside the housing (2) and is electrically connected to the circuit board (4); An insulating rod (3) is detachably mounted on the other end of the housing (2); The detection circuit module (42) and the detection head (1) are electrically connected to each other and are used to collect circuit signals in real time. The data processing module (44) is electrically connected to the detection circuit module (42) and is used to acquire the electrical signals collected by the detection circuit module (42) and determine whether the circuit is in an abnormal state. The main control chip (41) is electrically connected to the detection circuit module (42), the wireless communication module (43) and the data processing module (44) respectively, and is used to control the wireless communication module (43) to send information to the background when it is determined that the circuit is in an abnormal state.

2. The vertical spiral stirred mill electrical fault detection device according to claim 1, characterized in that, The detection head (1) is a replaceable component, and the end that contacts the circuit to be tested has a hook-shaped, needle-shaped, ring-shaped or clamp-shaped structure.

3. The vertical spiral stirred mill electrical fault detection device according to claim 1, characterized in that, An alarm module is also integrated on the circuit board (4); The alarm module is electrically connected to the main control chip (41), and the main control chip (41) is also used to control the alarm module to issue an alarm when it is determined that the circuit has an abnormal state.

4. The vertical spiral stirred mill electrical fault detection device according to claim 3, characterized in that, The alarm module is an audible and visual alarm module, including an LED indicator (46) and a buzzer (45) electrically connected to the circuit board (4).

5. The vertical spiral stirred mill electrical fault detection device according to claim 1, characterized in that, The circuit board (4) is also provided with a battery compartment (47), and the power supply (471) is located in the battery compartment (47).

6. The vertical spiral stirred mill electrical fault detection device according to claim 5, characterized in that, The outer casing (2) includes: Detachable and snap-fit ​​top cover (21) and back cover (22); A battery cover (211) for closing the battery compartment (47), the battery cover (211) being detachably mounted on the top cover (21).

7. The vertical spiral stirred mill electrical fault detection device according to claim 1, characterized in that, The other end of the outer shell (2) is provided with a metal connector (24), and the insulating rod (3) is detachably connected to the outer shell (2) through the metal connector (24).

8. The vertical spiral stirred mill electrical fault detection device according to claim 7, characterized in that, The metal connector (24) is a copper stud.

9. The vertical spiral stirred mill electrical fault detection device according to claim 1, characterized in that, The insulating rod (3) includes: Inner shaft column (33); The outer bushing (34) is sleeved on the outer wall of the inner shaft column (33) and slides in cooperation with the inner shaft column (33); The inner fiberglass tube (35) is fixedly sleeved on the outer wall of the outer bushing (34); The outer fiberglass tube (36) is fixedly sleeved on the outer wall of the inner fiberglass tube (35); The handle (37) is fixedly sleeved on the outer wall of the outer fiberglass tube (36); A stop pin (32) is provided between the handle (37), the outer glass fiber tube (36) and the inner glass fiber tube (35) to prevent relative shaking of the handle (37), the outer glass fiber tube (36) and the inner glass fiber tube (35); A buffer pad (31) is provided on the inner bottom surface of the handle (37) to reduce the impact force on the handle (37) when the inner shaft (33) retracts.

10. The vertical spiral stirred mill electrical fault detection device according to claim 1, characterized in that, The circuit board (4) is potted with epoxy resin.

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