High-stability near-infrared detector

Abstract

The invention relates to the field of infrared detectors. The invention discloses a high-stability near-infrared detector, and aims to solve the problems that when an existing near-infrared detector is used for carrying out nondestructive detection on a substance sample, the substance sample cannot be damaged or polluted, the requirement of the position of an infrared detection probe on cleanliness is high, and the detection efficiency is high. Some detected samples are affected by vibration force in the placing process, a certain amount of dust and impurities can be excited, and therefore the dust and impurities are attached to the position of an infrared detection probe to affect the detection effect of the infrared detection probe. A probe on the infrared detector can be wiped through the flexible cleaning brush on the cleaning disc, so that the probe part of the infrared detector cannot be interfered by dust and impurities when the infrared detector is moved out of the loading box.

Description

Technical Field

[0001] This invention relates to the field of infrared detectors, specifically a highly stable near-infrared detector. Background Technology

[0002] Near-infrared spectroscopy can perform non-destructive testing on material samples. Therefore, the testing process will not damage or contaminate the material samples. With its continuous development in recent years, near-infrared spectroscopy has gradually gained widespread public acceptance and official recognition, and has been deeply applied and developed in various fields.

[0003] Existing near-infrared detectors perform non-destructive testing on material samples without damaging or contaminating them. However, the infrared detection probe requires a high degree of cleanliness. Some samples may be subjected to vibration during placement, which can agitate dust and impurities, causing them to adhere to the infrared detection probe and affecting the detection results. Summary of the Invention

[0004] The purpose of this invention is to provide a highly stable near-infrared detector to solve the problems mentioned in the background art. To achieve the above objective, this invention provides the following technical solution: a highly stable near-infrared detector, comprising a horizontally arranged detection platform, a loading box fixedly mounted on the top of the detection platform, an infrared detector disposed inside the loading box, and auxiliary detection equipment in contact with the infrared detector disposed inside the loading box.

[0005] Preferably, the auxiliary detection device includes a push cylinder fixedly installed at the top of the loading box, an infrared detector installed at the telescopic end of the push cylinder and slidingly engaged with the inner wall of the loading box, and a shell sleeved on the outer wall of the loading box, forming a receiving chamber between the loading box and the shell. A transmission device is provided in the receiving chamber, and both sets of the transmission device include a sliding frame slidably installed on the loading box. The sliding frame is engaged with the outer wall of the infrared detector. A limiting rod is fixedly installed on the sliding frame and slides with the loading box. A pressure spring is sleeved on the limiting rod, and both ends of the pressure spring contact the sliding frame and the outer wall of the loading box, respectively.

[0006] Preferably, both sides of the sliding frame are provided with hinged frames, and the outer wall of the loading box is provided with a movable frame. The movable frame is hinged to the other end of the hinged frame. A telescopic closing plate is connected between the movable frames respectively set on the two sets of transmission equipment. The bottom of the loading box is provided with an opening. The opening is controlled by the opening and closing of the telescopic closing plate, thereby sealing the infrared detector in the loading box.

[0007] Preferably, the side wall of the movable frame is also provided with a rack, and the inner wall of the outer shell is provided with a cleaning component that drives and cooperates with the rack on the movable frame. The cleaning component includes a rotating rod rotatably disposed on the inner wall of the outer shell, a gear on the rotating rod that meshes with the rack, a cleaning disc slidably engaged on the rotating rod, and a flexible cleaning brush on the cleaning disc.

[0008] Preferably, the outer casing is provided with an adjusting component that abuts against the cleaning component. The adjusting component includes a positioning rod fixedly mounted on the outer casing, an adjusting frame hinged to the positioning rod, both ends of the adjusting frame being formed by telescopic frames, a pulley rotatably mounted between the two telescopic frames, a groove being formed on the cleaning disc, the pulley contacting the groove on the cleaning disc, a tension spring being provided on the side wall of the outer casing, both ends of the tension spring being connected to the outer casing and the adjusting frame respectively, a limiting frame being fixedly connected between two adjacent adjusting frames, a limiting rod slidingly engaging with the limiting frame, and a stop block being fixedly mounted at the bottom of the limiting rod that contacts the limiting frame.

[0009] Preferably, the inner bottom of the outer casing is provided with a cleaning holder corresponding to the cleaning tray, and the flexible cleaning brush on the cleaning tray contacts the cleaning holder, thereby cleaning the flexible cleaning brush through the cleaning holder.

[0010] Preferably, the detection platform is located below the infrared detector and has a placement slot. A rotary motor is installed in the placement slot. The main shaft of the rotary motor is driven and connected to a mounting base. The mounting base is rotatably engaged with the detection platform. A material tray is installed on the mounting base, and a damper is provided between the mounting base and the material tray.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0012] In this invention, when the infrared detector is testing a sample, the electric cylinder drives the infrared detector to move towards the sample within the loading box. At this time, the outer wall of the infrared detector contacts the sliding frame, causing the sliding frame to move downward within the loading box. As the sliding frame moves downward, it drives two sets of hinged frames to move, which in turn drive the movable frame connected to them to move horizontally on the outer wall of the loading box. The movable frame then causes the telescopic closing plate to unfold, thereby opening the opening at the bottom of the loading box and allowing the infrared detector to be moved out of the loading box for testing. This setup confines the infrared detector within the loading box, protecting it when not in use and preventing dust from adhering to the detector's probe.

[0013] In this invention, when the sliding frame moves horizontally on the outer wall of the loading box via the hinge frame, the rack on the sliding frame will contact the gear, thereby driving the gear to rotate on the rotating rod. The rotation of the rotating rod will drive the cleaning disc to rotate, thereby enabling the flexible cleaning brush on the cleaning disc to wipe the probe on the infrared detector, so that the probe part of the infrared detector will not be interfered with by dust and impurities when it is moved out of the loading box.

[0014] In this invention, when the infrared detector moves downward, causing the sliding frame to move downward, the tension spring on the adjusting frame causes the limiting rod on the sliding frame to move downward and pass through the limiting frame, preventing the adjusting frame from deflecting on the positioning rod. After the infrared detector finishes detecting the sample, its upward movement causes the sliding frame to move upward. At this time, as the sliding frame moves the limiting rod upward, the stop on the limiting rod contacts the limiting frame, causing the limiting frame to cause the connected adjusting frame to deflect on the positioning rod. This deflection causes the pulleys on the two sets of telescopic frames to press against the grooves on the cleaning disc, thereby causing the cleaning disc to rotate and move downward towards the cleaning seat. When the infrared detector moves into the loading box, the flexible cleaning brush on the cleaning tray comes into contact with the tray, thus cleaning the brush. This reduces the need for personnel to replace the flexible cleaning brush and prevents dust and impurities from re-adhering to the infrared detector's probe after cleaning. As the cleaning tray moves into the cleaning holder, the moving frame drives the rack and gear to rotate the rotating rod, causing the flexible cleaning brush to rotate and move downwards, further removing dust and impurities. Subsequent operation is quick and easy, requiring only replacement of the cleaning tray by inspectors.

[0015] In this invention, when the material to be tested is detected by an infrared detector, the material is placed in a material tray. A rotary motor drives the mounting base to rotate, and the rotation of the mounting base drives the material tray to rotate. The material tray rotates in conjunction with the infrared detector to detect the material. A damper set between the mounting base and the material tray ensures that the material tray rotates stably, preventing the material from stirring up a certain amount of dust that may affect the use of the infrared detector. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 A partial three-dimensional structural cross-section of the present invention. Figure One ;

[0018] Figure 3 This is a partial three-dimensional structural diagram of the present invention. Figure One ;

[0019] Figure 4 A partial three-dimensional structural cross-section of the present invention. Figure Two ;

[0020] Figure 5 This is a partial three-dimensional structural diagram of the present invention. Figure Two ;

[0021] Figure 6 This is a partial three-dimensional structural diagram of the present invention. Figure Three ;

[0022] Figure 7 This is a partial three-dimensional structural diagram of the present invention. Figure Four .

[0023] In the diagram: 1. Testing platform; 2. Loading box; 3. Infrared detector; 4. Auxiliary testing equipment; 41. Push cylinder; 42. Outer shell; 421. Receiving chamber; 5. Transmission equipment; 51. Sliding frame; 52. Limiting rod; 53. Pressure spring; 54. Hinge frame; 55. Moving frame; 56. Telescopic closing plate; 57. Rack; 6. Cleaning component; 61. Rotating rod; 62. Gear; 63. Cleaning tray; 631. Groove; 64. Flexible cleaning brush; 7. Adjusting component; 71. Positioning rod; 72. Adjusting frame; 73. Telescopic frame; 74. Pulley; 75. Tension spring; 76. Limiting frame; 77. Stop block; 78. Cleaning holder; 8. Rotary motor; 81. Mounting base; 82. Material tray; 83. Damper. Detailed Implementation

[0024] 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.

[0025] Please see Figures 1 to 7 The present invention provides a technical solution: a highly stable near-infrared detector, comprising a horizontally arranged detection platform 1, a loading box 2 fixedly arranged on the top of the detection platform 1, an infrared detector 3 disposed inside the loading box 2, and an auxiliary detection device 4 in contact with the infrared detector 3 disposed inside the loading box 2. The infrared detector 3 adopts a lead sulfide detector with cooling to avoid temperature drift and ensure the accuracy of the detector.

[0026] In this embodiment, as Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the auxiliary detection device 4 includes a push cylinder 41 fixedly installed at the top of the loading box 2, an infrared detector 3 installed at the telescopic end of the push cylinder 41, and the infrared detector 3 slidingly engaged with the inner wall of the loading box 2. A shell 42 is also fitted on the outer wall of the loading box 2, and the loading box 2 and the shell 42 form a receiving chamber 421. The receiving chamber 421 is provided with a transmission device 5 arranged opposite to each other. Both sets of transmission devices 5 include a sliding frame 51 slidably installed on the loading box 2. The sliding frame 51 is engaged with the outer wall of the infrared detector 3. A limiting rod 52 is fixedly installed on the sliding frame 51. The limiting rod 52 is slidably engaged with the loading box 2. A pressure spring 53 is fitted on the limiting rod 52. The two ends of the pressure spring 53 are in contact with the sliding frame 51 and the outer wall of the loading box 2, respectively.

[0027] Both sides of the sliding frame 51 are provided with hinged frames 54. The outer wall of the loading box 2 is slidably provided with a movable frame 55. The movable frame 55 is hinged to the other end of the hinged frame 54. A telescopic closing plate 56 is connected between the movable frames 55 respectively set on the two sets of transmission devices 5. The bottom of the loading box 2 is provided with an opening. The opening is controlled by the expansion and closure of the telescopic closing plate 56, thereby sealing the infrared detector 3 in the loading box 2.

[0028] When the infrared detector 3 detects the sample, the electric cylinder 41 drives the infrared detector 3 to move towards the sample within the loading box 2. At this time, the outer wall of the infrared detector 3 contacts the sliding frame 51, causing the sliding frame 51 to move downward within the loading box 2. As the sliding frame 51 moves downward, it drives the two sets of hinged frames 54 to move, which in turn drives the movable frame 55 connected to it to move horizontally on the outer wall of the loading box 2. At this time, the movable frame 55 will drive the telescopic closing plate 56 to unfold, thereby opening the opening at the bottom of the loading box 2 so that the infrared detector 3 can be moved out of the loading box 2 to perform the detection operation on the sample. This setting can confine the infrared detector 3 within the loading box 2, thereby protecting the infrared detector 3 when it is not in use and preventing dust from adhering to the probe of the infrared detector 3.

[0029] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the side wall of the movable frame 55 is also provided with a rack 57, and the inner wall of the outer shell 42 is provided with a cleaning component 6 that is in transmission cooperation with the rack 57 on the movable frame 55. The cleaning component 6 includes a rotating rod 61 rotatably disposed on the inner wall of the outer shell 42. The rotating rod 61 is provided with a gear 62 that meshes with the rack 57. A cleaning disc 63 is slidably engaged on the rotating rod 61. A flexible cleaning brush 64 is provided on the cleaning disc 63.

[0030] When the sliding frame 51 moves through the hinge frame 54 to make the moving frame 55 move horizontally on the outer wall of the loading box 2, the rack 57 on the moving frame 55 will contact the gear 62, thereby driving the gear 62 to rotate on the rotating rod 61. The rotation of the rotating rod 61 drives the cleaning disc 63 to rotate, thereby enabling the flexible cleaning brush 64 on the cleaning disc 63 to wipe the probe on the infrared detector 3, so that when the infrared detector 3 is moved out to the loading box 2, its probe part will not be interfered with by dust and impurities.

[0031] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the outer casing 42 is provided with an adjusting member 7 that abuts against the cleaning component 6. The adjusting member 7 includes a positioning rod 71 fixedly mounted on the outer casing 42. An adjusting frame 72 is hinged on the positioning rod 71. The two ends of the adjusting frame 72 are formed by telescopic frames 73. A pulley 74 is rotatably provided between the two telescopic frames 73. A groove 631 is provided on the cleaning disc 63. The pulley 74 contacts the groove 631 on the cleaning disc 63. A tension spring 75 is also provided on the side wall of the outer casing 42. The two ends of the tension spring 75 are respectively connected to the outer casing 42 and the adjusting frame 72. A limiting frame 76 is fixedly connected between two adjacent adjusting frames 72. The limiting rod 52 slides with the limiting frame 76. A stop block 77 that contacts the limiting frame 76 is fixedly provided at the bottom of the limiting rod 52.

[0032] The inner bottom of the outer casing 42 is provided with a cleaning seat 78 corresponding to the cleaning tray 63. The flexible cleaning brush 64 on the cleaning tray 63 contacts the cleaning seat 78, and the cleaning treatment of the flexible cleaning brush 64 is achieved through the cleaning seat 78.

[0033] When the infrared detector 3 moves downward, causing the sliding frame 51 to move downward, the tension spring 75 on the adjusting frame 72 causes the limiting rod 52 on the sliding frame 51 to move downward and pass through the limiting frame 76, preventing the adjusting frame 72 from deflecting on the positioning rod 71. After the infrared detector 3 finishes detecting the sample, its upward movement causes the sliding frame 51 to move upward. At this time, as the sliding frame 51 moves the limiting rod 52 upward, the stop 77 on the limiting rod 52 contacts the limiting frame 76, causing the limiting frame 76 to cause the connected adjusting frame 72 to deflect on the positioning rod 71. This deflection causes the pulleys 74 on the two sets of telescopic frames 73 to press against the groove 631 on the cleaning disc 63, thus causing the cleaning disc 63 to rotate downwards. As the cleaning tray 63 moves into the cleaning tray 78, the flexible cleaning brush 64 on the cleaning tray 63 comes into contact with the infrared detector 3 when it moves into the loading box 2, thus cleaning the flexible cleaning brush 64. This reduces the need for the inspector to replace the flexible cleaning brush 64 and prevents the dust and impurities from re-adhering to the probe of the infrared detector 3 after the flexible cleaning brush 64 has cleaned them. When the cleaning tray 63 moves into the cleaning tray 78, the moving frame 55 drives the rack 57 to contact the gear 62, which synchronously drives the rotating rod 61 to rotate. This causes the flexible cleaning brush 64 to be in a rotating and downward state when the cleaning tray 63 moves into the cleaning tray 78, which can further remove the dust and impurities from the flexible cleaning brush 64. Afterwards, only the inspector needs to replace the cleaning tray 63, which is convenient and quick to operate.

[0034] In this embodiment, as Figure 1 , Figure 2 and Figure 7 As shown, the detection platform 1 is located below the infrared detector 3 and has a placement slot. A rotary motor 8 is installed in the placement slot. The main shaft of the rotary motor 8 is connected to a mounting base 81. The mounting base 81 is rotatably engaged with the detection platform 1. A material tray 82 is installed on the mounting base 81. A damper 83 is provided between the mounting base 81 and the material tray 82.

[0035] When the infrared detector 3 is used to detect the material to be tested, the material to be tested is placed in the material tray 82. The rotating motor 8 drives the mounting base 81 to rotate, and the rotation of the mounting base 81 drives the material tray 82 to rotate. The material tray 82 rotates in conjunction with the infrared detector 3 to detect the material. The damper 83 set between the mounting base 81 and the material tray 82 ensures that the material tray 82 can rotate stably and avoids the material from stirring up a certain amount of dust when rotating in the material tray 82, which would affect the use of the infrared detector 3.

[0036] The method of use and advantages of this invention: The working process of this highly stable near-infrared detector is as follows:

[0037] likeFigure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown: When the infrared detector 3 detects the material to be tested, the material to be tested is placed in the material tray 82. The rotating motor 8 drives the mounting base 81 to rotate, and the rotation of the mounting base 81 drives the material tray 82 to rotate. The material tray 82 rotates in conjunction with the infrared detector 3 to detect the material. The damper 83 set between the mounting base 81 and the material tray 82 ensures that the material tray 82 can rotate stably and avoids the material from stirring up a certain amount of dust when rotating in the material tray 82, which would affect the use of the infrared detector 3.

[0038] When the infrared detector 3 detects the sample, the electric cylinder 41 drives the infrared detector 3 to move towards the sample in the loading box 2. At this time, the outer wall of the infrared detector 3 contacts the sliding frame 51, causing the sliding frame 51 to move downward in the loading box 2. When the sliding frame 51 moves downward, it drives the two sets of hinge frames 54 to move. Then, the two sets of hinge frames 54 drive the moving frame 55 connected to them to move horizontally on the outer wall of the loading box 2. At this time, the moving frame 55 will drive the telescopic closing plate 56 to unfold, thereby opening the opening at the bottom of the loading box 2 so that the infrared detector 3 can be moved out of the loading box 2 to detect the sample. This setting can confine the infrared detector 3 inside the loading box 2, thereby protecting the infrared detector 3 when it is not in use and preventing dust from adhering to the probe of the infrared detector 3.

[0039] When the sliding frame 51 moves through the hinge frame 54 to make the moving frame 55 move horizontally on the outer wall of the loading box 2, the rack 57 on the moving frame 55 will contact the gear 62, thereby driving the gear 62 to rotate on the rotating rod 61. The rotation of the rotating rod 61 drives the cleaning disc 63 to rotate, thereby enabling the flexible cleaning brush 64 on the cleaning disc 63 to wipe the probe on the infrared detector 3, so that when the infrared detector 3 is moved out to the loading box 2, its probe part will not be interfered with by dust and impurities.

[0040] When the infrared detector 3 moves downward, causing the sliding frame 51 to move downward, the tension spring 75 on the adjusting frame 72 causes the limiting rod 52 on the sliding frame 51 to move downward and pass through the limiting frame 76, preventing the adjusting frame 72 from deflecting on the positioning rod 71. After the infrared detector 3 finishes detecting the sample, its upward movement causes the sliding frame 51 to move upward. At this time, as the sliding frame 51 moves the limiting rod 52 upward, the stop 77 on the limiting rod 52 contacts the limiting frame 76, causing the limiting frame 76 to cause the connected adjusting frame 72 to deflect on the positioning rod 71. This deflection causes the pulleys 74 on the two sets of telescopic frames 73 to press against the groove 631 on the cleaning disc 63, thus causing the cleaning disc 63 to rotate downwards. As the cleaning tray 63 moves into the cleaning tray 78, the flexible cleaning brush 64 on the cleaning tray 63 comes into contact with the infrared detector 3 when it moves into the loading box 2, thus cleaning the flexible cleaning brush 64. This reduces the need for the inspector to replace the flexible cleaning brush 64 and prevents the dust and impurities from re-adhering to the probe of the infrared detector 3 after the flexible cleaning brush 64 has cleaned them. When the cleaning tray 63 moves into the cleaning tray 78, the moving frame 55 drives the rack 57 to contact the gear 62, which synchronously drives the rotating rod 61 to rotate. This causes the flexible cleaning brush 64 to be in a rotating and downward state when the cleaning tray 63 moves into the cleaning tray 78, which can further remove the dust and impurities from the flexible cleaning brush 64. Afterwards, only the inspector needs to replace the cleaning tray 63, which is convenient and quick to operate.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A highly stable near-infrared detector, characterized in that: It includes a horizontally arranged detection platform (1), a loading box (2) is fixedly installed on the top of the detection platform (1), an infrared detector (3) is installed inside the loading box (2), and an auxiliary detection device (4) that contacts the infrared detector (3) is installed inside the loading box (2).

2. The highly stable near-infrared detector according to claim 1, characterized in that: The auxiliary detection device (4) includes a push cylinder (41) fixedly installed at the top of the loading box (2), an infrared detector (3) is installed at the telescopic end of the push cylinder (41), and the infrared detector (3) slides with the inner wall of the loading box (2). The outer wall of the loading box (2) is also fitted with a shell (42), and the loading box (2) and the shell (42) form a receiving chamber (421). The receiving chamber (421) is provided with a transmission device (5) arranged opposite to it.

3. The highly stable near-infrared detector according to claim 2, characterized in that: Both sets of transmission devices (5) include a sliding frame (51) slidably mounted on the loading box (2). The sliding frame (51) is engaged with the outer wall of the infrared detector (3). A limiting rod (52) is fixedly mounted on the sliding frame (51). The limiting rod (52) is slidably engaged with the loading box (2). A pressure spring (53) is sleeved on the limiting rod (52). The two ends of the pressure spring (53) are in contact with the outer wall of the sliding frame (51) and the loading box (2), respectively.

4. A highly stable near-infrared detector according to claim 3, characterized in that: The sliding frame (51) is provided with hinged frames (54) on both sides. The outer wall of the loading box (2) is provided with a movable frame (55). The movable frame (55) is hinged to the other end of the hinged frame (54). A telescopic closing plate (56) is connected between the movable frames (55) respectively set on the two sets of transmission devices (5). The bottom of the loading box (2) is provided with an opening. The opening is controlled by the expansion and closure of the telescopic closing plate (56) to seal the infrared detector (3) in the loading box (2).

5. A highly stable near-infrared detector according to claim 4, characterized in that: The side wall of the movable frame (55) is also provided with a rack (57), and the inner wall of the outer shell (42) is provided with a cleaning component (6) that is in transmission cooperation with the rack (57) on the movable frame (55). The cleaning component (6) includes a rotating rod (61) rotatably disposed on the inner wall of the outer shell (42). The rotating rod (61) is provided with a gear (62) that meshes with the rack (57). The rotating rod (61) is fitted with a cleaning disc (63) that is slidably engaged. The cleaning disc (63) is provided with a flexible cleaning brush (64).

6. A highly stable near-infrared detector according to claim 5, characterized in that: The outer casing (42) is provided with an adjusting member (7) that abuts against the cleaning component (6). The adjusting member (7) includes a positioning rod (71) fixedly mounted on the outer casing (42). An adjusting frame (72) is hinged to the positioning rod (71). Both ends of the adjusting frame (72) are formed by telescopic frames (73). A pulley (74) is rotatably provided between the two telescopic frames (73). A groove (631) is provided on the cleaning disc (63). The pulley (74) and the cleaning disc (63) are connected to the cleaning component (6). The groove (631) on the cleaning tray (63) is in contact with the outer shell (42). A tension spring (75) is also provided on the side wall of the outer shell (42). The two ends of the tension spring (75) are respectively connected to the outer shell (42) and the adjustment frame (72). A limit frame (76) is fixedly connected between two adjacent adjustment frames (72). The limit rod (52) is slidably engaged with the limit frame (76). A stop (77) that contacts the limit frame (76) is fixedly provided at the bottom of the limit rod (52).

7. A highly stable near-infrared detector according to claim 5, characterized in that: The inner bottom of the outer casing (42) is provided with a cleaning seat (78) corresponding to the cleaning tray (63). The flexible cleaning brush (64) on the cleaning tray (63) contacts the cleaning seat (78) and the cleaning treatment of the flexible cleaning brush (64) is achieved through the cleaning seat (78).

8. A highly stable near-infrared detector according to claim 1, characterized in that: The detection platform (1) is located below the infrared detector (3) and has a placement slot. A rotary motor (8) is provided in the placement slot. The main shaft of the rotary motor (8) is connected to a mounting base (81). The mounting base (81) is rotatably engaged with the detection platform (1). A material tray (82) is installed on the mounting base (81). A damper (83) is provided between the mounting base (81) and the material tray (82).

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