A moisture detection device for silica production based on near-infrared light

Abstract

This invention relates to the field of silica moisture detection technology and discloses a near-infrared light-based silica moisture detection device for silica production. The device includes a feed pipe installed below a material rotary valve, a sight glass pipe mounted on the surface of the feed pipe, and a high-borosilicate tempered glass plate mounted on the sight glass pipe. An installation rod, a detection mechanism, and a remote display mechanism are provided on one side of the feed pipe. The detection mechanism is equipped with an installation adjustment mechanism for mounting the detection mechanism on the installation rod. The invention uses the installation adjustment mechanism to mount the detection mechanism on the installation rod and adjust it to a specific angle, aligning it with the high-borosilicate tempered glass. The light source in the detection mechanism emits specific near-infrared light, which is filtered by a rotating wheel and a reflector and then irradiated onto the silica material. Part of the near-infrared light is absorbed by the silica, while the remaining near-infrared light is scattered and focused into the near-infrared sensor by a concave mirror. The device is then connected to the remote display mechanism and a DCS system to perform the detection operation.

Description

Technical Field

[0001] This invention relates to the field of silica moisture detection technology, specifically to a moisture detection device for silica production based on near-infrared light. Background Technology

[0002] Silica is an inorganic non-metallic material whose main chemical component is silicon dioxide (SiO2). It is named for its white, fluffy powdery appearance and reinforcing properties similar to carbon black. It is not a natural mineral and is mostly prepared by gas-phase methods (hydrolysis of silicon tetrachloride) or precipitation methods (reaction of sodium silicate with acid). Its core characteristics include high specific surface area, strong adsorption, good dispersibility and chemical stability. It is also insulating, heat-resistant, and aging-resistant, and has a wide range of industrial applications. It can be used as a rubber reinforcing agent to improve the wear resistance and elasticity of tires and seals. It is also used in plastics, coatings and inks to improve product strength and anti-aging properties. In addition, it plays a role in thickening and anti-caking in toothpaste, food additives, catalyst carriers and other fields.

[0003] In the production process of silica, moisture content detection is a crucial step in ensuring product quality. Moisture content directly affects the dispersibility, reinforcing properties, and storage stability of silica, and therefore must be strictly controlled within a reasonable range. Currently, most testing in the industry uses offline sampling, which involves taking samples after product packaging and sending them to the laboratory for moisture testing via drying and weighing. This process is time-consuming and cannot provide real-time feedback on the actual moisture content of silica during production. Furthermore, although some moisture detection devices have real-time detection capabilities, their lenses are easily obstructed by dust and impurities, requiring regular manual cleaning. This is inconvenient and carries the risk of delayed cleaning, which can affect the accuracy of the test results.

[0004] Therefore, we propose a moisture detection device for silica production based on near-infrared light. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a moisture detection device for silica production based on near-infrared light. This solves the problem that most existing detection methods rely on offline sampling, requiring samples to be taken after product packaging and sent to a laboratory for moisture detection via drying and weighing. This process is time-consuming and cannot provide real-time feedback on the actual moisture content of silica during production. Furthermore, while some moisture detection devices have real-time detection capabilities, their detection lenses are easily obstructed by dust and impurities, requiring regular manual cleaning, which is inconvenient. If cleaning is not done in a timely manner, it will affect the accuracy of the detection.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the present invention provides the following technical solution: a moisture detection device for silica production based on near-infrared light, comprising a feed pipe for installation below a material rotary valve, a sight glass pipe mounted on the surface of the feed pipe, a high borosilicate tempered glass mounted on the sight glass pipe, an installation rod, a detection mechanism, and a remote display mechanism provided on one side of the feed pipe, an installation adjustment mechanism provided on the detection mechanism for mounting the detection mechanism on the installation rod and adjusting the angle of the detection mechanism to form a certain angle with the high borosilicate tempered glass, a cleaning mechanism provided on the detection mechanism for synchronously cleaning the detection mechanism and the high borosilicate tempered glass, and a remote display mechanism mounted on the installation rod;

[0009] The detection mechanism is connected to the remote display mechanism via a transmission cable and is powered by the remote display mechanism. The remote display mechanism is connected to the DCS system via a transmission cable to realize the remote transmission and real-time display of the moisture signal of the silica.

[0010] The detection mechanism includes a housing, an auxiliary motor, a filter wheel, a light source, a reflector, a concave mirror, and a near-infrared sensor.

[0011] Preferably, the auxiliary motor, light source, reflector, concave mirror, and near-infrared sensor are all installed in the inner wall of the housing. The output end of the auxiliary motor is fixedly connected to the filter wheel. Through the above components, during the detection process, the light source emits near-infrared light of a specific wavelength. After passing through the filter wheel, the near-infrared light shines on the reflector and is reflected onto the silica material. Part of the near-infrared light is absorbed by the silica, and the other part is scattered and focused into the near-infrared sensor by the concave mirror to achieve detection.

[0012] Preferably, the mounting and adjusting mechanism consists of two hollow seats fixed to the outer casing. A fixed shaft is rotatably connected to the inner walls of the two hollow seats. A clamping part is provided on the surface of the fixed shaft for clamping onto the mounting rod. A worm gear is also fixedly connected to the surface of the fixed shaft. A worm is rotatably connected to the inner wall of the outer casing, and the worm meshes with the worm gear. A handle is fixedly connected to the upper end of the worm. Through these components, during use, the outer casing can be mounted on the mounting rod via the clamping part. Then, the handle can be rotated, causing the worm to rotate. The worm, in conjunction with the worm gear, can drive the fixed shaft to rotate within the hollow seats, thereby adjusting the angle of the outer casing to form a certain detection angle.

[0013] Preferably, the clamping part includes two clamping seats one and two clamping seats two. The two clamping seats one are fixed on the fixed shaft, and two sets of bolts are inserted into the inner walls of the two clamping seats two. The bolts are threadedly connected to the inner walls of the clamping seats one. Through the above components, during use, the bolts can be threadedly connected to the clamping seats one, and then the clamping seats one and clamping seats two can clamp onto the mounting rod to realize the installation operation.

[0014] Preferably, both the first and second clamps are fixedly connected to the inner sides of the clamps, and the surface of the mounting rod has two grooves. The protrusions are inserted into the inner walls of the grooves. With the above components, when the protrusions are inserted into the grooves on the surface of the mounting rod, the stability of the clamps when clamped can be improved.

[0015] Preferably, the cleaning mechanism includes a fixed ring mounted on the surface of the outer casing by screws, a rotating ring rotatably connected to the surface of the fixed ring, two hollow frames fixedly connected to the surface of the rotating ring, a control arm slidably connected to the inner wall of the hollow frame, two cleaning brushes mounted on the control arm by screws, a stabilizing spring fixedly connected to the side of the control arm corresponding to the inner wall of the hollow frame, a rotating part mounted on the surface of the fixed ring for controlling the rotation of the rotating ring, and a control part also provided on the surface of the fixed ring for controlling the movement of the control arm. Through these components, during use, the control part first drives the control arm and the two cleaning brushes to move, allowing the two cleaning brushes to reach the cleaning area. Subsequently, the rotating part drives the rotating ring to rotate, thereby driving the control arm and the two cleaning brushes to rotate, thus realizing the cleaning operation.

[0016] Preferably, the rotating part includes a rotary motor mounted on the surface of a fixed ring. The output end of the rotary motor is fixedly connected to a gear, and a gear ring is fixedly connected to the surface of the rotating ring. The gear meshes with the gear ring. Through the above components, during the rotation process, the rotary motor is turned on, and the rotary motor can drive the gear to rotate. The gear, in conjunction with the gear ring, can drive the rotating ring to rotate.

[0017] Preferably, the control arm includes a main frame slidably connected to the inner wall of the hollow frame, a movable frame slidably connected to the inner wall of the main frame, two cleaning brushes respectively mounted on the main frame and the movable frame, an adjusting screw rotatably connected to the inner wall of the main frame, and the adjusting screw threadedly connected to the inner wall of the movable frame. Through the above components, the control arm can be adjusted by the distance between the detection mechanism and the high borosilicate tempered glass. Simply rotating the adjusting screw will cause the movable frame to move within the main frame, thus realizing the adjustment operation.

[0018] Preferably, the control unit includes a control block slidably connected to the inner wall of the fixed ring. An arc-shaped block is fixedly connected to the surface of the control block. An arc-shaped groove for inserting the arc-shaped block is formed on the surface of the main frame. A control screw is rotatably connected to the inner wall of the fixed ring. The control screw is threadedly connected to the inner wall of the control block. A control motor is mounted on the surface of the fixed ring. The output end of the control motor is fixedly connected to one end of the control screw. Through the above components, when control is performed, the control motor is turned on, the control motor drives the control screw to rotate, the control screw drives the control block to move, and the control block, in conjunction with the arc-shaped block and the arc-shaped groove, drives the main frame to move. When it moves to the designated position, the arc-shaped block can be removed from the arc-shaped groove when the rotating ring rotates.

[0019] Preferably, the cleaning brush is composed of a cleaning plate and brush bristles, and the brush bristles are made of nylon.

[0020] In summary, the technical effects and advantages of this invention are as follows:

[0021] 1. In this invention, the detection mechanism is installed on the mounting rod by the installation and adjustment mechanism and adjusted to a specific angle to align with the high borosilicate tempered glass. The light source in the detection mechanism emits specific near-infrared light, which is then filtered by a rotating wheel and a reflector and irradiated onto the silica material. Part of the near-infrared light is absorbed by the silica, while the other part is scattered and focused into the near-infrared sensor by a concave mirror. The sensor is then connected to the remote display mechanism and the DCS system to achieve the detection operation.

[0022] 2. In this invention, by setting up an installation adjustment mechanism, clamping seat one, clamping seat two and bolts are used to clamp clamping seat one and clamping seat two on the rod body to achieve installation. In addition, after the protrusion is inserted into the groove, it can ensure that the detection mechanism is stably fixed on the installation rod, reducing the positional displacement caused by vibration during production. The angle of the outer shell is adjusted by the worm gear and worm wheel to ensure that the near-infrared light stably irradiates the material.

[0023] 3. In this invention, by setting up a cleaning mechanism, the control unit drives the control arm and two cleaning brushes to move to the cleaning position. Then, the drive unit drives the rotating ring, control arm and two cleaning brushes to rotate, so as to simultaneously clean the optical window of the detection mechanism and the surface of the high borosilicate tempered glass, thereby removing dust and impurities from both places at the same time and ensuring the accuracy of the detection.

[0024] 4. In this invention, by setting up a control arm, the movable frame can be controlled to move within the main frame by adjusting the screw. The movement is adjusted according to the distance between the detection mechanism and the high borosilicate tempered glass, thereby improving the overall flexibility. Attached Figure Description

[0025] Figure 1This is a schematic diagram of the overall structure of a moisture detection device for silica production based on near-infrared light according to the present invention.

[0026] Figure 2 This is a schematic diagram of another perspective of the moisture detection device for silica production based on near-infrared light according to the present invention.

[0027] Figure 3 This is an exploded view of the installation and adjustment mechanism of a moisture detection device for silica production based on near-infrared light, according to the present invention.

[0028] Figure 4 This is a schematic diagram of the cleaning mechanism of a moisture detection device for silica production based on near-infrared light according to the present invention.

[0029] Figure 5 This is an exploded structural diagram of the cleaning mechanism of a moisture detection device for silica production based on near-infrared light, according to the present invention.

[0030] Figure 6 This invention relates to a moisture detection device for silica production based on near-infrared light. Figure 5 Schematic diagram of the structure at point A in the middle;

[0031] Figure 7 This is a schematic diagram of the control arm structure of a moisture detection device for silica production based on near-infrared light according to the present invention.

[0032] Figure 8 This invention relates to a moisture detection device for silica production based on near-infrared light. Figure 7 Schematic diagram of the structure at point B;

[0033] Figure 9 This is a simplified structural diagram of the detection mechanism of a moisture detection device for silica production based on near-infrared light, according to the present invention.

[0034] In the diagram: 1. Feed pipe; 2. Sight glass pipe; 3. High borosilicate tempered glass; 4. Mounting rod; 5. Remote display mechanism; 6. Detection mechanism; 61. Housing; 62. Auxiliary motor; 63. Filter wheel; 64. Light source; 65. Reflector; 66. Near-infrared sensor; 67. Concave mirror; 7. Mounting and adjustment mechanism; 71. Worm gear; 72. Handle; 73. Hollow seat; 74. Fixed shaft; 75. Clamp one; 76. Worm gear; 77. Clamping seat 2; 78. Bolt; 79. Protrusion; 710. Groove; 8. Cleaning mechanism; 81. Fixing ring; 82. Rotating ring; 83. Gear ring; 84. Rotary motor; 85. Gear; 86. Control motor; 87. Control screw; 88. Main frame; 89. Moving frame; 810. Cleaning brush; 811. Adjusting screw; 812. Stabilizing spring; 813. Arc groove; 814. Control block; 815. Arc block; 816. Hollow frame. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] refer to Figure 1 - Figure 9 The device shown is a near-infrared light-based moisture detection device for silica production. It includes a feed pipe 1 installed below a material rotary valve (not shown in the figure), which conveys silica into the feed pipe 1. A sight glass pipe 2 is installed on the surface of the feed pipe 1, and a high-borosilicate tempered glass 3 is installed on the sight glass pipe 2. An installation rod 4, a detection mechanism 6, and a remote display mechanism 5 are arranged on one side of the feed pipe 1. The detection mechanism 6 is equipped with an installation adjustment mechanism 7, used to install the detection mechanism 6 on the installation rod 4 and adjust the angle of the detection mechanism 6 to form a certain angle with the high-borosilicate tempered glass 3. A cleaning mechanism 8 is also provided on the detection mechanism 6 for synchronous cleaning of the detection mechanism 6 and the high-borosilicate tempered glass 3. The remote display mechanism 5 is installed on the installation rod 4. The detection mechanism 6 is connected to the remote display mechanism 5 via a transmission cable and is powered by the remote display mechanism 5. The remote display mechanism 5 is connected to a DCS system via a transmission cable to realize the remote transmission and real-time display of the silica moisture signal.

[0037] The detection mechanism 6 includes a housing 61, an auxiliary motor 62, a filter wheel 63, a light source 64, a reflector 65, a concave mirror 67, and a near-infrared sensor 66. The auxiliary motor 62, the light source 64, the reflector 65, the concave mirror 67, and the near-infrared sensor 66 are all installed in the inner wall of the housing 61. The output end of the auxiliary motor 62 is fixedly connected to the filter wheel 63.

[0038] In this embodiment: During the detection process, the light source 64 emits near-infrared light of a specific wavelength. After passing through the filter wheel 63, the near-infrared light shines on the reflector 65 and is reflected onto the silica material. Part of the near-infrared light is absorbed by the silica, while the other part is scattered and focused into the near-infrared sensor 66 by the concave mirror 67. At the same time, the detected data is transmitted to the remote display mechanism 5 and the DCS system. The DCS system is located in the control room of the production workshop. The detection mechanism 6 is connected to the remote display mechanism 5 through a transmission cable and is powered by the remote display mechanism 5. The remote display mechanism 5 is connected to the DCS system through a transmission cable, thereby achieving the purpose of online detection of the moisture content of silica during the production process.

[0039] The installation adjustment mechanism 7 is fixed to two hollow seats 73 on the outer shell 61. The inner walls of the two hollow seats 73 are rotatably connected to a fixed shaft 74. The surface of the fixed shaft 74 is provided with a clamping part for clamping the mounting rod 4. The surface of the fixed shaft 74 is also fixedly connected to a worm gear 76. The inner wall of the outer shell 61 is rotatably connected to a worm 71, which meshes with the worm gear 76. The upper end of the worm 71 is fixedly connected to a handle 72. The clamping part includes two clamping seats 1 75 and two clamping seats 2 77. The two clamping seats 1 75 are fixed to the fixed shaft 74. The inner walls of the two clamping seats 2 77 are each inserted with two sets of bolts 78. The bolts 78 are threaded to the inner walls of the clamping seats 1 75. The inner sides of the clamping seats 1 75 and the clamping seats 2 77 are each fixedly connected with a protrusion 79. The surface of the mounting rod 4 has two grooves 710, and the protrusion 79 is inserted into the inner wall of the groove 710.

[0040] In this embodiment: During use, bolt 78 can be threadedly connected to clamp 75, and then clamp 75 and clamp 77 can be clamped on the mounting rod 4. Protrusion 79 is inserted into groove 710 on the surface of mounting rod 4, which can improve the stability of clamping clamp 75 and clamp 77. Then the outer shell 61 can be installed on the mounting rod 4. Then the handle 72 can be rotated, and the handle 72 drives the worm gear 71 to rotate. The worm gear 71 and worm wheel 76 can drive the fixed shaft 74 to rotate in the hollow seat 73, thereby adjusting the angle of the outer shell 61 to form a certain detection angle. The remote display mechanism 5 can also be clamped and installed on the mounting rod 4 using the same clamping part.

[0041] The cleaning mechanism 8 includes a fixed ring 81 mounted on the surface of the housing 61 by screws. A rotating ring 82 is rotatably connected to the surface of the fixed ring 81. Two hollow frames 816 are fixedly connected to the surface of the rotating ring 82. A control arm is slidably connected to the inner wall of the hollow frame 816. Two cleaning brushes 810 are mounted on the control arm by screws. The cleaning brushes 810 are composed of a cleaning plate and brush bristles made of nylon. A stabilizing spring 812 is fixedly connected to the side of the control arm corresponding to the inner wall of the hollow frame 816. A rotating part is mounted on the surface of the fixed ring 81 to control the rotation of the rotating ring 82. A control part is also provided on the surface of the fixed ring 81 to control the movement of the control arm. The rotating part includes a rotary motor 84 mounted on the surface of the fixed ring 81. A gear 85 is fixedly connected to the output end of the rotary motor 84. A gear ring is fixedly connected to the surface of the rotating ring 82. 83, gear 85 meshes with gear ring 83, control arm includes main frame 88 slidably connected to the inner wall of hollow frame 816, movable frame 89 slidably connected to the inner wall of main frame 88, two cleaning brushes 810 are respectively installed on main frame 88 and movable frame 89, adjusting screw 811 is rotatably connected to the inner wall of main frame 88, adjusting screw 811 is threadedly connected to the inner wall of movable frame 89, control part includes control block 814 slidably connected to the inner wall of fixed ring 81, arc block 815 is fixedly connected to the surface of control block 814, arc groove 813 for arc block 815 to be inserted is opened on the surface of main frame 88, control screw 87 is rotatably connected to the inner wall of fixed ring 81, control screw 87 is threadedly connected to the inner wall of control block 814, control motor 86 is installed on the surface of fixed ring 81, output end of control motor 86 is fixedly connected to one end of control screw 87.

[0042] In this embodiment: During use, the control arm can first be adjusted by the distance between the detection mechanism 6 and the high borosilicate tempered glass 3. Simply rotate the adjusting screw 811, which drives the moving frame 89 to move within the main frame 88 to achieve the adjustment operation. Then, the control unit drives the control arm and the two cleaning brushes 810 to move. The control motor 86 is turned on, which drives the control screw 87 to rotate. The control screw 87 drives the control block 814 to move. The control block 814, in conjunction with the arc block 815 and the arc groove 813, drives the main frame 88 to move. When it moves to the designated position, the rotating part drives the rotating ring 82 to rotate. The rotating motor 84 is turned on, which drives the gear 85 to rotate. The gear 85, in conjunction with the gear ring 83, drives the rotating ring 82 to rotate, thereby driving the control arm and the two cleaning brushes 810 to rotate to achieve the cleaning operation. When the rotating ring 82 rotates, the arc block 815 can be moved out of the arc groove 813.

[0043] Working principle of this invention: In use, bolt 78 can be threadedly connected to clamp 75. Then, clamp 75 and clamp 77 can clamp onto the mounting rod 4. At the same time, the protrusions 79 on the inner sides of clamp 75 and clamp 77 are inserted into the grooves 710 on the surface of the mounting rod 4, which can improve the stability of clamping by clamp 75 and clamp 77. The outer shell 61 can then be installed on the mounting rod 4. After installation, the detection mechanism 6 needs to be adjusted to a certain detection angle. The handle 72 can be rotated, which drives the worm gear 71 to rotate. The worm gear 71 and worm wheel 76 can drive the fixed shaft 74 to rotate in the hollow seat 73, thereby adjusting the outer shell. An angle of 61 is formed to create a certain detection angle. During the detection process, the material rotary valve ensures that the silica material is evenly fed into the feed pipe 1. The light source 64 in the detection mechanism 6 emits near-infrared light of a specific wavelength. After the near-infrared light passes through the filter wheel 63, it shines on the reflector 65. After being reflected by the reflector 65, it passes through the high borosilicate tempered glass 3 and shines on the silica material. Some of the near-infrared light is absorbed by the silica, and the other part of the near-infrared light is scattered and then focused into the near-infrared sensor 66 by the concave mirror 67. At the same time, the detected data is transmitted to the DCS system through the remote display mechanism 5 to achieve the purpose of online detection of silica moisture during the production process.

[0044] When periodic cleaning is required, the control arm can first be adjusted by the distance between the detection mechanism 6 and the high borosilicate tempered glass 3. Simply rotate the adjusting screw 811, which drives the movable frame 89 to move within the main frame 88, thus achieving the adjustment operation. Subsequently, the control unit drives the control arm and the two cleaning brushes 810 to move. Turning on the control motor 86 drives the control screw 87 to rotate, which in turn drives the control block 814 to move. The control block 814, in conjunction with the arc-shaped block 815 and the arc-shaped groove 813, drives the main frame 88 to move. Once the main frame 88 is in the designated position, the two cleaning brushes 810 are positioned in their respective cleaning areas. Turning on the rotary knob... The rotary motor 84 drives the gear 85 to rotate. The gear 85, in conjunction with the gear ring 83, drives the rotating ring 82 to rotate, thereby driving the control arm and the two cleaning brushes 810 to rotate, thus realizing the cleaning operation. When the rotating ring 82 rotates, the arc block 815 can be moved out of the arc groove 813. After cleaning, the rotating ring 82 rotates to the initial position, and the arc block 815 can be inserted into the arc groove 813 on the surface of the main frame 88. Then, the control motor 86 drives the control screw 87 to rotate in the opposite direction. The control block 814, in conjunction with the arc block 815, drives the main frame 88, the moving frame 89 and the two cleaning brushes 810 to reset, stabilizing the deformation of the spring 812.

[0045] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power, and the main controller can be a conventional known device such as a computer that can control it.

[0046] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A moisture detection device for silica production based on near-infrared light, comprising a feed pipe (1) for installation below a material rotary valve, characterized in that: The surface of the feeding pipe (1) is equipped with a sight glass pipe (2), and a high borosilicate tempered glass (3) is installed on the sight glass pipe (2). A mounting rod (4), a detection mechanism (6) and a remote display mechanism (5) are provided on one side of the feeding pipe (1). An installation adjustment mechanism (7) is provided on the detection mechanism (6) for installing the detection mechanism (6) on the mounting rod (4) and adjusting the angle of the detection mechanism (6) to form a certain angle with the high borosilicate tempered glass (3). A cleaning mechanism (8) is also provided on the detection mechanism (6) for synchronously cleaning the detection mechanism (6) and the high borosilicate tempered glass (3). The remote display mechanism (5) is installed on the mounting rod (4). The cleaning mechanism (8) includes a fixed ring (81) mounted on the surface of the housing (61) by screws. A rotating ring (82) is rotatably connected to the surface of the fixed ring (81). Two hollow frames (816) are fixedly connected to the surface of the rotating ring (82). A control arm is slidably connected to the inner wall of the hollow frame (816). Two cleaning brushes (810) are mounted on the control arm by screws. A stabilizing spring (812) is fixedly connected to the side of the control arm corresponding to the inner wall of the hollow frame (816). A rotating part is installed on the surface of the fixed ring (81) for controlling the rotation of the rotating ring (82). A control part is also provided on the surface of the fixed ring (81) for controlling the movement of the control arm. The detection mechanism (6) includes a housing (61), an auxiliary motor (62), a filter wheel (63), a light source (64), a reflector (65), a concave mirror (67), and a near-infrared sensor (66). The control arm includes a main frame (88) slidably connected to the inner wall of a hollow frame (816). A movable frame (89) is slidably connected to the inner wall of the main frame (88). Two cleaning brushes (810) are respectively mounted on the main frame (88) and the movable frame (89). An adjusting screw (811) is rotatably connected to the inner wall of the main frame (88). The adjusting screw (811) is threadedly connected to the inner wall of the movable frame (89). The control unit includes a control block (814) slidably connected to the inner wall of a fixing ring (81). An arc-shaped block (815) is fixedly connected to the surface of the control block (814). An arc-shaped groove (813) for inserting the arc-shaped block (815) is opened on the surface of the main frame (88). A control screw (87) is rotatably connected to the inner wall of the fixing ring (81). The control screw (87) is threadedly connected to the inner wall of the control block (814). A control motor (86) is installed on the surface of the fixing ring (81). The output end of the control motor (86) is fixedly connected to one end of the control screw (87).

2. The moisture detection device for silica production based on near-infrared light according to claim 1, characterized in that: The detection mechanism (6) is connected to the remote display mechanism (5) via a transmission cable and is powered by the remote display mechanism (5). The remote display mechanism (5) is connected to the DCS system via a transmission cable to realize the remote transmission and real-time display of the moisture signal of silica.

3. The moisture detection device for silica production based on near-infrared light according to claim 1, characterized in that: The installation adjustment mechanism (7) is fixed to two hollow seats (73) on the outer shell (61). The inner walls of the two hollow seats (73) are rotatably connected to a fixed shaft (74). The surface of the fixed shaft (74) is provided with a clamping part for clamping on the mounting rod (4). The surface of the fixed shaft (74) is also fixedly connected to a worm gear (76). The inner wall of the outer shell (61) is rotatably connected to a worm (71). The worm (71) is meshed with the worm gear (76). The upper end of the worm (71) is fixedly connected to a handle (72).

4. The moisture detection device for silica production based on near-infrared light according to claim 3, characterized in that: The clamping part includes two clamping seats one (75) and two clamping seats two (77). The two clamping seats one (75) are fixed on the fixed shaft (74). The inner walls of the two clamping seats two (77) are each fitted with two sets of bolts (78). The bolts (78) are threaded to the inner walls of the clamping seats one (75).

5. The moisture detection device for silica production based on near-infrared light according to claim 4, characterized in that: Both the inner sides of the first clamp (75) and the second clamp (77) are fixedly connected with protrusions (79), and the surface of the mounting rod (4) has two grooves (710), and the protrusions (79) are inserted into the inner walls of the grooves (710).

6. The moisture detection device for silica production based on near-infrared light according to claim 1, characterized in that: The auxiliary motor (62), light source (64), reflector (65), concave mirror (67) and near-infrared sensor (66) are all installed in the inner wall of the housing (61), and the output end of the auxiliary motor (62) is fixedly connected to the filter wheel (63).

7. The moisture detection device for silica production based on near-infrared light according to claim 1, characterized in that: The rotating part includes a rotary motor (84) mounted on the surface of a fixed ring (81). A gear (85) is fixedly connected to the output end of the rotary motor (84). A gear ring (83) is fixedly connected to the surface of the rotating ring (82). The gear (85) meshes with the gear ring (83).

8. The moisture detection device for silica production based on near-infrared light according to claim 1, characterized in that: The cleaning brush (810) is composed of a cleaning plate and brush bristles, and the brush bristles are made of nylon.

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