Portable detection terminal suitable for coal mine belt conveyor temperature sensor

Abstract

The utility model discloses a portable detection terminal suitable for a temperature sensor of a coal mine belt conveyor, which comprises a shell and a protective cover, one end of the shell is provided with an end fixing cylinder, and the end fixing cylinder is internally in threaded connection with a heating end; the heating end comprises a connecting cylinder, a heat source, temperature measuring probes and a heat insulation column, the heating end is in threaded connection in the end fixing cylinder through the connecting cylinder, the heat source is arranged at the outer end of the connecting cylinder through an annular supporting plate, the two symmetrical temperature measuring probes are embedded in the two sides of the heat source, and the heat insulation column is arranged at the inner end of the connecting cylinder; a temperature control circuit board, a wiring terminal strip and a rechargeable battery are arranged in the shell, and a temperature display screen, a temperature adjusting button and a power switch button are arranged on the temperature control circuit board; a temperature display window, a temperature button rubber cover and a power button rubber cover corresponding to the temperature display screen, the temperature adjusting button and the power switch button are arranged on the protective cover; the device has the advantages of being high in detection efficiency, convenient to operate and carry and good in use adaptability.

Description

Technical Field

[0001] The utility model belongs to the technical field of underground temperature sensor detection equipment, and particularly relates to a portable detection terminal applicable to a temperature sensor of a coal mine belt conveyor. Background Art

[0002] As one of the important transportation equipment in coal mine underground mining, the reliable operation of the belt conveyor has an important impact on the production efficiency and safety production of the whole coal mine. During the operation of the coal mine belt conveyor, the coal conveying belt, which is one of its important components, is supported by rollers and idlers and realizes coal conveying through the traction of a motor. During this process, the friction between the coal conveying belt and the rollers and idlers causes the temperature of the belt itself to continuously rise. The continuously rising temperature poses a great potential safety hazard, and in severe cases, it will cause a belt combustion accident, thus threatening the safety of the whole mine.

[0003] To prevent the occurrence of the above accidents, temperature sensors are usually installed near the lower part of the coal conveying belt. By collecting the temperature of the coal conveying belt in real time and sending the collected temperature data to the supporting backend monitoring system in real time, when the collected temperature exceeds the set temperature threshold, water spraying cooling or shutdown is carried out on the coal conveying belt, so as to realize the over-temperature protection of the coal conveying belt. However, due to the high coal dust and humidity in the coal mine underground, the working reliability of the temperature measuring probe of the temperature sensor is inevitably affected. Therefore, regular or irregular detection of the underground temperature sensor is an important guarantee measure to ensure its reliable operation.

[0004] In view of the fact that the warning temperature values detected by the underground temperature sensor for the coal conveying belt are mostly higher than the surrounding environment temperature, and at the same time, the explosion-proof requirements in the coal mine underground are relatively high, it is difficult to select a heat source for heating the temperature measuring probe when detecting the temperature sensor. And at present, special equipment for reliability detection of temperature sensors underground is still relatively scarce. Often, the temperature sensor is disassembled and returned to the surface for detection. This detection method has problems such as large workload, low efficiency and affecting the normal production of the coal mine caused by the disassembly and assembly of the temperature sensor.

[0005] To solve the above problems, it is necessary to develop a portable detection terminal applicable to a temperature sensor of a coal mine belt conveyor. Summary of the Utility Model

[0006] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a portable detection terminal applicable to a temperature sensor of a coal mine belt conveyor with high detection efficiency, convenient operation and carrying, and good use adaptability.

[0007] The object of the present utility model is achieved as follows: A portable detection terminal applicable to a temperature sensor of a coal mine belt conveyor, comprising a housing and a protective cover. One end of the housing is provided with an end fixing cylinder, and a heating end is threadedly connected inside the end fixing cylinder. The heating end includes a connecting cylinder, a heat source, a temperature measuring probe, and a heat insulating column. The heating end is threadedly connected inside the end fixing cylinder through the connecting cylinder. The outer end of the connecting cylinder is provided with the heat source through an annular support plate. Two symmetrical temperature measuring probes are embedded on both sides of the heat source. The inner end of the connecting cylinder is provided with the heat insulating column. A temperature control circuit board, a wiring terminal block, and a rechargeable battery are arranged inside the housing. A temperature display screen, a temperature adjustment button, and a power switch button are arranged on the temperature control circuit board. The heat source and the temperature measuring probe are electrically connected to the temperature control circuit board through the wiring terminal block. The rechargeable battery is electrically connected to the temperature control circuit board through the wiring terminal block. The protective cover is provided with a temperature display window, a temperature button rubber cover, and a power button rubber cover corresponding to the temperature display screen, the temperature adjustment button, and the power switch button respectively.

[0008] Preferably, a limiting ring plate is arranged at the outer end of the connecting cylinder. The heat source is a cylindrical heating resistor matching the inner diameter of the limiting ring plate or a heating element with an embedded heating core.

[0009] Preferably, an installation ring plate is arranged at the bottom of the end fixing cylinder. A sealing gasket matching the installation ring plate is arranged on the outer side of the installation ring plate. The heating end is tightly connected to the end fixing cylinder through the connecting cylinder, the installation ring plate, and the sealing gasket.

[0010] Preferably, the maximum heating temperature of the heating end is set lower than the detonation temperature values of underground coal dust and combustible gases.

[0011] Preferably, the rechargeable battery is an explosion-proof battery.

[0012] Preferably, the temperature control circuit board is implemented by using an STM32F103RC chip.

[0013] Preferably, the protective cover is tightly installed on the housing through four screws at its four corners.

[0014] Due to the adoption of the above technical solutions, the beneficial effects of the present utility model are as follows: The present utility model uses an extended heating end to provide the heat source required for the detection of temperature sensors in coal mines, which can solve the problem of difficult selection of heat sources at the underground detection site, realize the rapid development of reliability detection work for temperature sensors anytime and anywhere, and greatly improve the detection efficiency; The present utility model does not require the disassembly of the underground temperature sensor, and the reliability can be detected by using the extended heating end to contact the temperature measuring probe of the temperature sensor. It is convenient to operate and carry, and can reduce the work intensity and physical expenditure of the detection personnel; The present utility model adopts a built-in temperature measuring probe and controls the heating temperature of the heat source through a temperature adjustment button, which can meet the reliable detection and use requirements of different temperature measurement values of the temperature sensor, and improve the utilization value of the detection terminal; Generally, the present utility model has the advantages of high detection efficiency, convenient operation and carrying, and good use adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the external three-dimensional structural schematic diagram of the present utility model.

[0016] Figure 2 is the internal three-dimensional structural schematic diagram of the present utility model.

[0017] Figure 3 is the front view structural schematic diagram of the heating end and the end fixing cylinder of the present utility model.

[0018] Figure 4 is the top view structural schematic diagram of the heating end and the end fixing cylinder of the present utility model.

[0019] Figure 5 is the usage schematic diagram of the present utility model.

[0020] In the figure: 1. Shell 2. Protective cover 3. Heating end 301. Connecting cylinder 302. Heat source 303. Temperature measuring probe 304. Heat insulation column 305. Annular support plate 306. Limit ring plate 4. End fixing cylinder 5. Temperature display window 6. Temperature button rubber cover 7. Power button rubber cover 8. Screw 9. Temperature control circuit board 10. Power switch button 11. Temperature adjustment button 12. Temperature display screen 13. Rechargeable battery 14. Terminal block 15. Installation ring plate 16. Sealing gasket 17. Coal conveying belt 18. Roller 19. Temperature sensor support 20. Temperature sensor 21. Portable detection terminal. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The technical solutions of the present utility model will be further specifically described below in conjunction with the drawings.

[0022] As Figure 1 , Figure 2 , Figure 3 ,Figure 4 and Figure 5 As shown in Figure 5 , the present utility model provides a portable detection terminal 21 applicable to a temperature sensor of a coal mine belt conveyor, which includes a housing 1 and a protective cover 2. The protective cover 2 is tightly and fixedly installed on the housing 1 through four screws 8 at its four corners. The housing 1 and the protective cover 2 provide a relatively enclosed storage and placement space for the internal electronic components, avoiding possible short circuits, sparks and other external leaks of the electronic components, so that the portable detection terminal 21 has a certain explosion-proof function.

[0023] One end of the housing 1 is provided with a terminal fixing cylinder 4, and a heating terminal 3 is connected to the terminal fixing cylinder 4 by internal threads. The terminal fixing cylinder 4 is fixedly connected to the housing 1, which can be realized by an integral structure or welding.

[0024] The heating terminal 3 includes a connecting cylinder 301, a heat source 302, a temperature measuring probe 303 and a heat insulating column 304. The heating terminal 3 is connected to the terminal fixing cylinder 4 by internal threads through the connecting cylinder 301. A heat source 302 is provided at the outer end of the connecting cylinder 301 through an annular support plate 305. Two symmetrical temperature measuring probes 303 are embedded on both sides of the heat source 302. Embedding and setting two temperature measuring probes 303 is to more accurately control the heating detection temperature provided by the heat source 302 for the temperature sensor 20, improve the detection accuracy, and thus improve the accuracy of temperature adjustment. The inner end of the connecting cylinder 301 is provided with a heat insulating column 304, and the heat insulating column 304 is made of a heat insulating material and is blocked between the heat source 302 and the housing 1 to avoid the heat generated by the heat source 302 affecting the electronic components in the housing 1.

[0025] The housing 1 is internally provided with a temperature control circuit board 9, a terminal block 14 and a rechargeable battery 13. The temperature control circuit board 9 is provided with a temperature display screen 12, a temperature adjustment button 11 and a power switch button 10. The temperature display screen 12 adopts an LH12864K14 dot matrix liquid crystal display module. The terminal block 14 is provided to facilitate the detachable and fixed installation of the lead wires, which is convenient for later maintenance and repair. There are two temperature adjustment buttons 11, one for temperature increase adjustment and one for temperature decrease adjustment.

[0026] The heat source 302 and the temperature measuring probe 303 are electrically connected to the temperature control circuit board 9 through the terminal block 14. The rechargeable battery 13 is electrically connected to the temperature control circuit board 9 through the terminal block 14. The rechargeable battery 13 adopts an explosion-proof battery, which provides working power for the whole portable detection terminal 21.

[0027] The temperature control circuit board 9 is implemented using the STM32F103RC chip. The STM32F103RC chip has powerful processing capabilities and rich peripheral resources, and can implement a variety of temperature control applications, including but not limited to PID temperature control relays, infrared thermometers, and Bluetooth thermometers. The temperature measurement probe 303 uses a micro PT100 probe. During operation, the two temperature measurement probes 303 transmit the temperature of the heat source 302 to the temperature control circuit board 9 in real time. The STM32F103RC chip on the temperature control circuit board 9 accurately controls the heating and detection temperature of the heat source 302 according to the built-in program.

[0028] The maximum heating temperature of the heating end 3 (i.e., the heat source 302) is lower than the set temperature value for detonating underground coal dust and combustible gases, further improving the explosion-proof function of the portable detection terminal 21 itself.

[0029] On the protective cover 2, there are a temperature display window 5, a temperature button rubber cover 6, and a power button rubber cover 7 corresponding to the temperature display screen 12, the temperature adjustment button 11, and the power switch button 10. While facilitating viewing and operation, they seal and protect the corresponding electronic components, further improving the explosion-proof function of the portable detection terminal 21 itself.

[0030] The outer end of the connecting cylinder 301 is provided with an integrated limiting ring plate 306. The heat source 302 is a cylindrical heating resistor or a heating element with an embedded heating core that matches the inner diameter of the limiting ring plate 306. Among them, the heating resistor is purchased on the market and its shape can be customized. Among them, the heating core is also purchased on the market, and the heating element can be formed by externally installing a heat conduction shell on the heating core.

[0031] The bottom of the end fixing cylinder 4 is provided with an integrated mounting ring plate 15. The outer side of the mounting ring plate 15 is provided with a sealing gasket 16 that matches the mounting ring plate 15. The heating end 3 is tightly connected to the end fixing cylinder 4 through the connecting cylinder 301, the mounting ring plate 15, and the sealing gasket 16.

[0032] After completing the above installation, the present utility model can be put into use. Press the power button rubber cover 7 to turn on the power switch of the portable detection terminal 21. It can be seen through the temperature display window 5 that the temperature display screen 12 shows the initial temperature of the heating end 3 at this time. Press the temperature adjustment button through the temperature button rubber cover 6 to adjust the heating and detection temperature of the heating end 3. When the heating and detection temperature displayed is the detection temperature required by the temperature sensor 20 to be detected, stop adjusting. Then align the heating end 3 and make good contact with the temperature measurement probe of the temperature sensor 20 to be detected. Then, check through the backend monitoring system whether the heating and detection temperature set by the heating end 3 is received, so as to quickly judge whether the temperature sensor 20 of the coal mine belt conveyor is working reliably.

[0033] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A portable detection terminal applicable to a temperature sensor of a coal mine belt conveyor, comprising a housing and a protective cover, characterized in that: One end of the housing is provided with an end fixing cylinder, and a heating end is connected to the end fixing cylinder by internal threads; The heating end includes a connecting cylinder, a heat source, a temperature measuring probe and a heat insulating column. The heating end is connected to the end fixing cylinder by internal threads through the connecting cylinder. The outer end of the connecting cylinder is provided with the heat source through an annular support plate. Two symmetrical temperature measuring probes are embedded on both sides of the heat source. The inner end of the connecting cylinder is provided with the heat insulating column; A temperature control circuit board, a terminal block and a rechargeable battery are arranged inside the housing. A temperature display screen, a temperature adjustment button and a power switch button are arranged on the temperature control circuit board. The heat source and the temperature measuring probe are electrically connected to the temperature control circuit board through the terminal block. The rechargeable battery is electrically connected to the temperature control circuit board through the terminal block; The protective cover is provided with a temperature display window, a temperature button rubber cover and a power button rubber cover corresponding to the temperature display screen, the temperature adjustment button and the power switch button.

2. The portable detection terminal for the temperature sensor applicable to the coal mine belt conveyor according to claim 1, wherein: A limiting ring plate is arranged at the outer end of the connecting cylinder. The heat source is a cylindrical heating resistor matching the inner diameter of the limiting ring plate or a heating element with an embedded heating core.

3. The portable detection terminal applicable to the temperature sensor of the coal mine belt conveyor according to claim 1, characterized in that: The bottom of the end fixing cylinder is provided with a mounting ring plate. A sealing gasket matching the mounting ring plate is arranged on the outer side of the mounting ring plate. The heating end is tightly connected to the end fixing cylinder through the connecting cylinder, the mounting ring plate and the sealing gasket.

4. The portable detection terminal for the temperature sensor applicable to the coal mine belt conveyor according to claim 1, wherein: The maximum heating temperature of the heating end is set lower than the detonation temperature values of underground coal dust and combustible gas.

5. The portable detection terminal applicable to the temperature sensor of the coal mine belt conveyor according to claim 1, characterized in that: The rechargeable battery is an explosion-proof battery.

6. The portable detection terminal applicable to the temperature sensor of the coal mine belt conveyor according to claim 1, characterized in that: The temperature control circuit board is implemented by using an STM32F103RC chip.

7. The portable detection terminal for the temperature sensor applicable to the coal mine belt conveyor according to claim 1, characterized in that: The protective cover is tightly installed on the housing through four screws at its four corners.

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