A probe structure for a spark detector

Abstract

The present application relates to the technical field of spark detection head, and specifically proposes a kind of spark detector's probe structure, including the control circuit board for detecting spark and the explosion-proof shell for assembling control circuit board, the surface of explosion-proof shell extends protrusion, and assemble the light collecting member for improving the sensitivity of detection spark, the protruding part of explosion-proof shell is equipped with the light transmission axis for improving detection range;The present application is by rotatable light transmission axis or rotatable cleaning component, utilize light transmission axis to improve the range of response, so that light signal is accepted when passing through light transmission axis is propagated to the position of light collecting member, to ensure the stability of light signal acceptance, in the process, the surface of light transmission axis is cleaned using cleaning component, when cleaning, since only the alternate cleaning part of the area of light transmission axis surface, therefore it can guarantee that there is always a certain area for the propagation of light signal, while also avoiding the accumulation of dust, to ensure the accuracy of spark detection.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of spark detection head, and particularly discloses a spark detector head structure. BACKGROUND

[0002] The internal structure of the spark head usually includes optical components, sensors and signal processing circuits, etc., the sensors and signal processing circuits are all packaged inside the explosion-proof mounting shell (usually circular or square), the optical components will extend and protrude from the surface of the mounting shell, and the extended part needs to be placed inside the pipeline during installation. If sparks occur inside the pipeline, the optical components will transmit optical signals to the sensors, and the signal processing circuit will give the next instruction. In the pipeline with a large diameter, the spark heads are usually installed symmetrically in the four directions of the axis.

[0003] The spark head is usually assembled inside the pipeline for transmitting powder particles, and the fan is used to transmit the powder particles. As the use time gradually increases, dust and powder may accumulate on the surface of the head, and the accumulation degree of the surface of the head at different positions is different. The dust and powder will affect the transmission of the optical components to the optical signals, thereby affecting the detection accuracy. Therefore, the head needs to be disassembled regularly for cleaning the optical components, which is relatively cumbersome and inconvenient to use. SUMMARY

[0004] In order to solve the above problems, the present application provides a spark detector head structure for solving the problems mentioned in the background.

[0005] In order to achieve the above purpose, the present application adopts the following technical scheme: a spark detector head structure, comprising a control circuit board for detecting sparks and an explosion-proof shell for assembling the control circuit board, the surface of the explosion-proof shell is extended and protruded, and is provided with a light condensing piece for improving the sensitivity of spark detection, the protruded part of the explosion-proof shell is provided with a light transmission shaft for improving the detection range, the axis of the light transmission shaft is parallel to the axis of the pipeline to be detected; the surface of the light transmission shaft is provided with a packaging sleeve for mounting and connecting the light condensing piece, and the light transmission shaft is partially exposed to the air, the light condensing piece and the light transmission shaft are in a perpendicular mounting state, the light condensing piece divides the light transmission shaft into three regions, two reflecting plates are arranged in the two side regions of the light condensing piece; the surface of the packaging sleeve is provided with a cleaning assembly for cleaning the three regions of the light transmission shaft in a segmented manner, so that there is always a region for conducting optical signals of sparks in the pipeline.

[0006] Preferably, the two ends of the packaging sleeve are provided with symmetrical inclined surfaces, and both are inclined to the middle line position, the axis of the light transmission shaft coincides with the axis of the packaging sleeve, and the diameter of the light transmission shaft is smaller than the diameter of the packaging sleeve.

[0007] Preferably, the cleaning assembly comprises two cleaning straight rods attached to the surface of the light transmission shaft, located at the two side areas of the light collecting member, the two cleaning straight rods are located at the top and bottom of the light transmission shaft respectively, a spiral cleaning connecting rod is arranged between the two cleaning straight rods, the cleaning connecting rod is attached to the surface of the light transmission shaft, and the number of turns of the cleaning connecting rod is set to half a turn, the end portions of the two cleaning straight rods are both equipped with a circular plate attached to the two ends of the light transmission shaft; a half-ring groove is formed in the surface of the packaging sleeve to provide sufficient moving rod space for the cleaning assembly, a rotating assembly is arranged in the interior of the packaging sleeve to drive the rotation of the cleaning assembly, and a mounting assembly is arranged in the interior of the packaging sleeve to mount and fix the light transmission shaft.

[0008] Preferably, the cleaning assembly comprises a cleaning plate arranged on the surface of the packaging sleeve, the cleaning plate is attached to the surface of the light transmission shaft, and the reflecting plate is movably arranged in the interior of the light transmission shaft; the reflecting plate is fixedly connected with the packaging sleeve through the mounting assembly, and the light transmission shaft is movably connected with the packaging sleeve through the rotating assembly.

[0009] Preferably, the packaging sleeve comprises a ring sleeve at the middle portion and two cylinders at the two side portions, the distal ends of the two cylinders are provided with symmetrical inclined surfaces, and the inclined surfaces are inclined towards the position of the ring sleeve, the light collecting member is arranged at the position of the ring sleeve, the light transmission shaft is mounted and connected with the packaging sleeve through a bearing, and the cleaning assembly is arranged on the surface of the packaging sleeve.

[0010] Preferably, the cleaning assembly comprises two cleaning U-shaped rods attached to the surface of the light transmission shaft, the two ends of the cleaning U-shaped rod are fixedly connected with the surfaces of the cylinder and the ring sleeve, the surface of the reflecting plate is equipped with a counterweight for lowering the gravity center of the reflecting plate, and the counterweight is mounted and connected with the light transmission shaft through a bearing; the light transmission shaft is mounted and connected with the packaging sleeve through the rotating assembly.

[0011] Preferably, the mounting assembly comprises two fixed frames fixedly connected with the interior of the packaging sleeve, and the light transmission shaft or the circular plate is mounted and connected with the packaging sleeve through the fixed frame.

[0012] Preferably, the rotating assembly comprises a driving rod one arranged in the interior of the packaging sleeve through a bearing, the axis of the driving rod one is parallel to the axial direction of the pipeline, the surfaces of the circular plate and the driving rod one or the surfaces of the light transmission shaft and the driving rod one are fixedly sleeved with intermeshing gear wheels, and the end portion of the driving rod one is equipped with a wind fan.

[0013] Preferably, a plurality of through holes for ventilation are formed in the surface of each fan blade of the wind fan.

[0014] Preferably, the rotating assembly comprises a driving rod II assembled inside the packaging sleeve through a bearing, the axis of the driving rod II is perpendicular to the axis of the pipeline, the surface of the round plate and the surface of the driving rod II or the light transmission shaft and the surface of the driving rod II are both fixedly sleeved with intermeshing bevel gears; the surface of the explosion-proof shell is assembled with a connecting pipe movable along the axis, the connecting pipe is connected with the driving rod II through a pin shaft, and the inside of the explosion-proof shell is assembled with a driving mechanism for driving the connecting pipe to rotate.

[0015] The technical scheme has the following advantages or beneficial effects: the application provides a probe structure of a spark detector, the light transmission shaft is arranged to be rotatable, the light transmission shaft is used to improve the response range, the light signal is transmitted to the position of the light collecting piece when passing through the light transmission shaft, the stability of the light signal receiving is ensured, the surface of the light transmission shaft is cleaned by the cleaning assembly during the process, only part of the surface of the light transmission shaft is cleaned alternately during the cleaning process, so that the light signal transmission is ensured in a certain area at all times, and the accumulation of dust is avoided, so that the accuracy of the spark detection is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0016] The application and its features, shapes and advantages will become more apparent by reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings. The same reference numbers in all the drawings indicate the same parts, and the drawings are not necessarily drawn to scale, the emphasis being on illustrating the principle of the application.

[0017] Figure 1 is a perspective structural schematic view of a mounting state of a probe structure of a spark detector provided by the application.

[0018] Figure 2 is a perspective structural schematic view of example 1.

[0019] Figure 3 is Figure 2 is another perspective structural schematic view of the packaging sleeve in example 1.

[0020] Figure 4 is a perspective structural schematic view of a rotating assembly in example 1.

[0021] Figure 5 is Figure 4 is a front sectional view of example 1.

[0022] Figure 6 is a perspective structural schematic view of example 2.

[0023] Figure 7 is a perspective structural schematic view of a rotating assembly in example 2.

[0024] Figure 8 is Figure 7Another perspective view of the structure of the application.

[0025] Figure 9 is Figure 8 A front view of the structure of the application.

[0026] Figure 10 is a perspective view of the structure of Example 3.

[0027] Figure 11 is a perspective view of the rotating assembly in Example 3.

[0028] Figure 12 is a front view of the light transmission axis in Example 3.

[0029] Figure 13 is a perspective view of the installation state of the spark probe.

[0030] In the figure: 1, explosion-proof housing; 2, light collector; 3, light transmission axis; 4, packaging sleeve; 5, reflector; 6, cleaning straight rod; 7, cleaning connecting rod; 8, half-ring groove; 9, cleaning plate; 10, annular sleeve; 11, cylinder; 12, bearing; 13, cleaning U-shaped rod; 14, round plate; 15, fixing frame; 16, driving rod 1; 17, gear; 18, through hole; 19, driving rod 2; 20, connecting pipe; 21, pin shaft; 22, wind fan; 23, bevel gear; 24, mounting groove; 25, mounting plate; 26, reinforcing plate; 27, threaded pipe; 28, reinforcing bolt. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0032] In order to enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0033] Figure 1 A probe structure of a spark detector installed inside a pipeline is provided, the number of probes installed on the pipeline is four, which are located at the upper, lower, left and right four positions of the pipeline axis, and the installation positions are completely symmetrical, and the infrared or ultraviolet sensor inside the probe is used to detect the spark inside the pipeline. In order to improve the accuracy of the sensor response, a light collector 2 is usually arranged inside the probe (see Figure 2), to improve the intensity of the light signal, thereby indirectly improving the accuracy, the sensor and the corresponding control circuit are assembled inside the explosion-proof shell 1, and the surface of the explosion-proof shell 1 extends a part to install the light collector 2.

[0034] As shown in Figure 2 , the extension part of the explosion-proof shell 1 is a threaded pipe, and the surface of the light collector 2 is provided with matching threads, and the light collector 2 is installed inside the explosion-proof shell 1 by rotating, and the light transmission shaft 3 is assembled at the end of the light collector 2, the axis of the light transmission shaft 3 is perpendicular to the axis of the light collector 2, the surface of the light transmission shaft 3 is assembled with the packaging sleeve 4, the surface of the packaging sleeve 4 also extends a threaded pipe, and the surface of the extension part of the explosion-proof shell 1 is provided with matching threads, and the packaging sleeve 4 is also installed on the surface of the explosion-proof shell 1 by threads, both ends of the packaging sleeve 4 are provided with symmetrical inclined surfaces, and both inclined surfaces are inclined to the middle line, the axis of the light transmission shaft 3 coincides with the axis of the packaging sleeve 4, the diameter of the light transmission shaft 3 is smaller than the diameter of the packaging sleeve 4, and the packaging sleeve 4 is used for guiding the wind direction, thereby reducing the possibility of dust accumulation on the surface of the packaging sleeve 4 and the light transmission shaft 3.

[0035] When the spark passes from the inside of the pipe, a light signal is emitted and received by the light transmission shaft 3, and the light signal is transmitted to the inside of the light collector 2 through the light transmission shaft 3, so it is necessary to ensure that part of the light transmission shaft 3 is directly exposed to the air, at this time the light collector 2 divides the light transmission shaft 3 into three regions, i.e. the light signal receiving region directly contacted by the light collector 2 and the light signal transmission regions on both sides, so as to improve the receiving range of the light signal, increase the response time, and further improve the accuracy of the response, at this time the cleaning assembly can be assembled on the surface of the packaging sleeve 4, and the surface of the light transmission shaft 3 is cleaned in segments, so that during the cleaning process, there is still a certain region capable of transmitting and receiving the light signal.

[0036] For different installation positions of the probe structure inside the pipe, three embodiments of the probe structure are proposed to realize that the cleaning of the surface of the light transmission shaft 3 does not affect the normal use of the spark detection function.

[0037] Embodiment 1

[0038] For the probe structure installed at the top and both sides, as shown in Figures 2-5As shown, the inside of the light transmission shaft 3 is provided with two oval-shaped light-reflecting plates 5, which are respectively located in the light signal propagation area of the light transmission shaft 3. It should be noted that the light-reflecting plates 5 are arranged obliquely to ensure that when the light signal is transmitted to the surface of the light-reflecting plates 5, the light-reflecting plates 5 can transmit it to the light signal receiving area. Two fixing frames 15 are assembled inside the packaging sleeve 4 and are respectively located at both ends of the packaging sleeve 4. One end of the fixing frame 15 is fixedly extended on the surface of the light-reflecting plate 5. The two ends of the light transmission shaft 3 are also provided with a circular tube which is sleeved on the surface of the fixing frame 15 and the light-reflecting plate 5 at the connecting position, so as to ensure that the light-reflecting plate 5 is in a fixed position during the rotation of the light transmission shaft 3, thereby ensuring that the light signal can be stably and correctly transmitted.

[0039] A cleaning plate 9 is assembled at the edge position of the surface of the packaging sleeve 4. The cleaning plate 9 must be located below the light transmission shaft 3. When the light transmission shaft 3 rotates, the dust is extruded and accumulated at this position by the cleaning plate 9 and is finally taken away by the wind. The part rotating into the packaging sleeve 4 is cleaned, thereby providing a better light signal propagation and receiving path to improve the accuracy of the sensor response. The light transmission shaft 3 is driven to rotate by a rotating assembly. During the whole process, since the light transmission shaft 3 is continuously cleaned, the accumulation of dust on the surface of the light transmission shaft 3 can be prevented, and the use is more convenient.

[0040] Embodiment 2

[0041] For the probe structure at the top and both sides, as shown in Figures 6-9 Unlike the installation method of the light-reflecting plate 5 in embodiment 1, the light-reflecting plate 5 at this position is fixedly connected with the light transmission shaft 3. The light transmission shaft 3 is fixedly assembled in the inside of the packaging sleeve 4 through the fixing frame 15. The difference lies in that the surface of the light transmission shaft 3 is provided with two cleaning straight rods 6 which are attached to the light signal propagation area. The two cleaning straight rods 6 are respectively located at the top and the top of the light transmission shaft 3, that is, the distance between the two cleaning straight rods 6 is the diameter of the light transmission shaft 3.

[0042] The two cleaning straight rods 6 are connected through a spiral cleaning connecting rod 7. The cleaning straight rod 6 and the cleaning connecting rod 7 are an integral structure. The number of turns of the cleaning connecting rod 7 is half a turn.

[0043] The end of the two cleaning connecting rods 7 is fixed with a circular plate 14. The circular plate 14 is driven to rotate by a rotating assembly, thereby driving the cleaning connecting rod 7 and the cleaning straight rod 6 to rotate around the light transmission shaft 3, so as to realize the cleaning of the surface of the light transmission shaft 3. Since the positions of the cleaning straight rods 6 are different, one of the light signal propagation areas will still work during the rotating and cleaning process, thereby realizing the detection of sparks. It should be noted that since the cleaning straight rod 6 and the cleaning connecting rod 7 need to rotate, a half-ring groove 8 needs to be formed on the surface of the packaging sleeve 4 for the cleaning straight rod 6 and the cleaning connecting rod 7 to pass through.

[0044] Compared with the embodiment 1, in the process of rotating the cleaning straight rod 6 and the cleaning connecting rod 7, the dust can be separated from the bottom position, but part of the dust can still enter the inside of the packaging sleeve 4 and be adsorbed on the surface of the light collector 2 (see Figure 2 . However, the inside of the light transmission shaft 3 is completely sealed due to the fixed connection of the light reflection plate 5 and the light transmission shaft 3, and the inside of the light transmission shaft 3 is in a dust-free state. In actual use, the probe structure of the embodiment 2 can be installed at both sides, and the probe structure of the embodiment 1 can be installed at the top.

[0045] Embodiment 3

[0046] For the probe structure installed at the bottom position, as shown in Figures 10-12 , the packaging sleeve 4 includes a middle annular sleeve 10 and two side cylinders 11. Similarly, the distal ends of the two cylinders 11 are provided with symmetrical inclined surfaces, which are inclined towards the position of the annular sleeve 10, so as to prevent the accumulation of dust. At this time, the light collector 2 is assembled at the position of the annular sleeve 10, and the light transmission shaft 3 is installed and connected between the annular sleeve 10 and the cylinders 11 through bearings 12. Two cleaning U-shaped rods 13 are assembled between the two cylinders 11 and the annular sleeve 10. The surface of the cleaning U-shaped rod 13 is attached to the surface of the light transmission shaft 3, and the two ends of the cleaning U-shaped rod 13 are fixedly connected to the surfaces of the cylinders 11 and the annular sleeve 10. The cleaning U-shaped rod 13 is in the lowest position.

[0047] The inside of the light transmission shaft 3 is assembled with two light reflection plates 5, which are arranged in an inclined manner, so that the light reflection plate 5 can transmit the light signal to the light signal receiving area when the light signal is transmitted to the surface of the light reflection plate 5. At this time, the surface of the light reflection plate 5 needs to be assembled with a counterweight, which is used to reduce the center of gravity of the entire light reflection plate 5. Similarly, the light reflection plate 5 is installed in the inside of the light transmission shaft 3 through the bearing 12. In the process of rotating the light transmission shaft 3, the light reflection plate 5 is always in the same state, which ensures the smooth propagation of the light signal.

[0048] The light transmission shaft 3 is driven to rotate by the rotating assembly, and the cleaning U-shaped rod 13 accumulates dust at the bottom of the pipeline, which is blown away by the wind.

[0049] In the embodiments 1, 2 and 3, the rotating assembly is used for driving. In the present application, the rotating assembly has two forms.

[0050] As shown in Figure 2 , Figure 6 and Figure 10As shown in the figure, the rotating assembly includes a driving rod 16 assembled inside the packaging sleeve 4, the driving rod 16 is fixedly installed through a bearing 12, the bearing 12 is preferably provided with a sealing function, the axis of the driving rod 16 is parallel to the axis of the pipeline, the surface of the circular plate 14 and the driving rod 16, or the surface of the light transmission shaft 3 and the driving rod 16 is fixedly sleeved with intermeshing gears 17, a wind fan 22 is assembled at the end of the driving rod 16, the wind fan 22 is driven to rotate by the wind inside the pipeline, so as to realize the rotating function, since the surface of the light transmission shaft 3 will be abraded during cleaning, it is necessary to effectively control the cleaning speed, in actual use, the wind force for conveying dust inside the pipeline is usually large, so it is necessary to open a ventilation hole 18 on the surface of each fan blade, so as to reduce the rotating speed of the driving rod 16, and indirectly slow down the abrasion of the surface of the light transmission shaft 3, so as to improve the service life.

[0051] The driving is realized by the wind inside the pipeline itself, which can effectively reduce the use cost.

[0052] As shown in the figure, Figure 4 , Figures 7-8 and Figure 11 , the rotating assembly includes a driving rod 19 assembled inside the packaging sleeve 4, the driving rod 19 is installed and connected through a bearing, the axis of the driving rod 19 is perpendicular to the axis of the pipeline, the surface of the circular plate 14 and the driving rod 19, or the surface of the light transmission shaft 3 and the driving rod 19 is fixedly sleeved with intermeshing bevel gears 23, the surface of the explosion-proof shell 1 is assembled with a connecting pipe 20 which can move along the axis, and a driving mechanism (not shown in the figure) for driving the connecting pipe 20 to rotate is assembled inside, the connecting pipe 20 is installed and connected with the driving rod 19 through a pin shaft 21, the driving rod 19 is driven to rotate by the driving mechanism, so as to realize the rotating function.

[0053] The stability of rotation can be ensured by the external driving mechanism.

[0054] Similarly, the two forms of the rotating assembly can be combined for use, whether the wind fan 22 is in a normal working state is judged by the driving rod 19, if the wind fan 22 fails, the driving rod 19 can be driven to rotate by the driving mechanism.

[0055] As shown in the figure, Figure 12As shown, due to the change of the probe structure, when the probe is assembled, a long mounting groove 24 is needed to be opened on the surface of the pipeline, which is shorter than the length of the light transmission shaft 3, the light transmission shaft 3 and the entire packaging sleeve 4 are placed inside the pipeline, the extension part of the packaging sleeve 4 is located outside the pipeline, the mounting plate 25 is sleeved on the extension part, the mounting plate 25 is located inside the mounting groove 24, an integrally formed threaded pipe 27 is arranged on the surface of the explosion-proof shell 1, the reinforcing bolt 28 is assembled inside the threaded pipe 27, and the reinforcing plate 26 is rotatably mounted on the surface of the reinforcing bolt 28 and abuts against the surface of the mounting plate 25.

[0056] When assembled, the reinforcing bolt 28 needs to be rotated, so that the reinforcing plate 26 abuts against the surface of the mounting plate 25 and the pipeline, thereby improving the firmness of the mounting.

[0057] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0058] In the description of the present application, it should be understood that unless otherwise explicitly specified and limited, the terms "provided", "connected", "mounted", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0059] The preferred embodiments of the present application have been described above. It should be understood that the present application is not limited to the above specific embodiments, and the devices and structures not described in detail should be understood as being implemented in the ordinary way in the art; any person skilled in the art can make many possible changes and modifications, or modify equivalent embodiments without departing from the technical scheme of the present application, which does not affect the essential content of the present application. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application, without departing from the technical scheme of the present application, all still belong to the protection scope of the technical scheme of the present application.

Claims

1. A probe structure of a spark detector comprising a control circuit board for detecting a spark and an explosion-proof housing for assembling the control circuit board, a surface of the explosion-proof housing is extended in a convex shape, and is assembled with a light condensing member for improving a sensitivity of detecting a spark, characterized in that: The convex part of the explosion-proof shell is equipped with a light transmission shaft for increasing the detection range, and the axis of the light transmission shaft is parallel to the axis of the pipeline to be detected; ​ The surface of the light transmission shaft is equipped with a packaging sleeve for mounting the light collecting member, and the light transmission shaft is partially exposed to the air, the light transmission shaft and the light collecting member are in a perpendicular mounting state, the light collecting member divides the light transmission shaft into three regions, the inside of the light transmission shaft is equipped with two reflecting plates, and the two reflecting plates are respectively located in the two side regions of the light collecting member; The surface of the packaging sleeve is equipped with a cleaning assembly for alternately cleaning the three regions of the light transmission shaft, preventing dust accumulation, and ensuring that the light transmission shaft always transmits light signals to sparks in the pipeline.

2. A spark detector probe structure according to claim 1, characterised in that: Both ends of the packaging sleeve are provided with symmetrical inclined surfaces, and both ends are inclined to the middle line position, the axis of the light transmission shaft coincides with the axis of the packaging sleeve, and the diameter of the light transmission shaft is smaller than the diameter of the packaging sleeve.

3. A spark detector probe structure according to claim 1, wherein: The cleaning assembly includes two cleaning straight rods attached to the surface of the light transmission shaft, which are respectively located in the two side regions of the light collecting member, and the two cleaning straight rods are respectively located at the top and bottom of the light transmission shaft, a spiral cleaning connecting rod is arranged between the two cleaning straight rods, the cleaning connecting rod is attached to the surface of the light transmission shaft, and the number of turns is half, and the end of the two cleaning straight rods is equipped with a circular plate which is movably attached to the two ends of the light transmission shaft. The surface of the packaging sleeve is provided with a half-ring groove to provide sufficient moving rod space for the cleaning assembly, the inside of the packaging sleeve is equipped with a rotating assembly for driving the rotation of the cleaning assembly, and the inside of the packaging sleeve is equipped with a mounting assembly for mounting and fixing the light transmission shaft.

4. A spark detector probe structure according to claim 1, wherein: The cleaning assembly includes a cleaning plate attached to the surface of the packaging sleeve, the cleaning plate is attached to the surface of the light transmission shaft, and the reflecting plate is movably mounted in the inside of the light transmission shaft. The reflecting plate is fixedly connected with the packaging sleeve through the mounting assembly, and the light transmission shaft is movably connected with the packaging sleeve through the rotating assembly.

5. A spark detector probe structure according to claim 1, wherein: The packaging sleeve includes a ring sleeve in the middle and two cylinders on both sides, the ends of the two cylinders are provided with symmetrical inclined surfaces, and both ends are inclined to the position of the ring sleeve, the light collecting member is arranged at the position of the ring sleeve, the light transmission shaft and the packaging sleeve are connected through a bearing, and the cleaning assembly is arranged on the surface of the packaging sleeve.

6. A spark detector probe structure according to claim 5, wherein: The cleaning assembly includes two cleaning U-shaped rods attached to the surface of the light transmission shaft, the two ends of the cleaning U-shaped rod are fixedly connected to the surface of the cylinder and the ring sleeve, the surface of the reflecting plate is equipped with a counterweight for reducing the gravity center of the reflecting plate, and the counterweight and the light transmission shaft are connected through a bearing. The light transmission shaft is connected with the packaging sleeve through the rotating assembly.

7. A spark detector probe structure according to claim 3, wherein: The mounting assembly includes two fixed frames fixedly connected to the inside of the packaging sleeve, and the light transmission shaft or the circular plate is connected with the packaging sleeve through the fixed frame.

8. A spark detector probe structure according to any one of claims 3, 4 and 6, characterised in that: The rotating assembly includes a driving rod one arranged in the inside of the packaging sleeve through a bearing, the axis of the driving rod one is parallel to the axis of the pipeline, the surface of the circular plate and the driving rod one or the surface of the light transmission shaft and the driving rod one is fixedly sleeved with intermeshing gears, and the end of the driving rod one is equipped with a wind fan.

9. A spark detector probe structure according to claim 8, characterised in that: The fan blade surface of the wind fan is provided with a plurality of through holes for ventilation.

10. A spark detector probe structure according to any one of claims 3, 4 and 6, characterised in that: The rotating assembly comprises a driving rod II assembled inside the packaging sleeve through a bearing, the axis of the driving rod II is perpendicular to the axis of the pipeline, the surface of the round plate or the surface of the light transmission shaft and the surface of the driving rod II are fixedly sleeved with bevel gears which are interlocked. The surface of the explosion-proof shell is assembled with a connecting pipe which can move along the axis, the connecting pipe is connected with the driving rod II through a pin shaft, the inside of the explosion-proof shell is assembled with a driving mechanism for driving the connecting pipe to rotate.

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