A kind of light shielding device for leaf threshing and redrying laboratory near infrared moisture meter

Abstract

The utility model relates to shading device technical field, and disclose a kind of shading device for leaf beating redrying laboratory near-infrared moisture meter, including shading box, the outer surface of shading box is equipped with shading door plate by slide rail, the outer surface of shading door plate is fixed with magnetic attraction strip, the inner side of shading door plate is equipped with sealing strip, the back of shading box is equipped with data line perforation, the outer surface of shading door plate is equipped with recessed handle, the outer surface of shading box is equipped with fixed component and limiting component;The fixed component includes: connecting frame, this shading device for leaf beating redrying laboratory near-infrared moisture meter, when needing to clamp and fix cable, rotating pull rod drives connecting plate rotation, so that fixed frame is synchronously rotated. Contact block and moving block contact, promote moving block and clamping plate to move and clamp to cable, it can prevent loosening and falling off during use from affecting instrument operation.

Description

Technical Field

[0001] This utility model relates to the technical field of shading devices, specifically a shading device for a near-infrared moisture meter used in a laboratory for leaf re-drying. Background Technology

[0002] In tobacco leaf re-drying laboratories, near-infrared moisture meters are crucial instruments for rapidly detecting the moisture content of tobacco leaves. However, the laboratory environment contains various sources of light interference, such as indoor lighting and indicator lights from other experimental equipment. When these stray lights enter the measurement optical path of the near-infrared moisture meter, they interfere with the measurement signal, leading to deviations in the measurement results and affecting the accuracy of tobacco leaf moisture content determination.

[0003] Currently, most common light-shielding devices on the market are simple shielding structures, and they cannot secure cables during use. As a result, cables are prone to loosening and falling off, affecting the normal operation of the instrument. Utility Model Content

[0004] The purpose of this invention is to provide a light-shielding device for a near-infrared moisture meter used in a laboratory for leaf re-drying, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a light-shielding device for a near-infrared moisture meter in a laboratory for leaf re-baking, comprising a light-shielding box, a light-shielding door panel mounted on the outer surface of the light-shielding box via a slide rail, a magnetic strip fixed on the outer surface of the light-shielding door panel, a sealing strip installed on the inner side of the light-shielding door panel, a data cable through hole on the back of the light-shielding box, a grooved handle on the outer surface of the light-shielding door panel, and a fixing component and a limiting component provided on the outer surface of the light-shielding box; The fixing component includes: Connecting frame, the connecting frame is used to stabilize its internal mechanism; Cable clamps are used to clamp cables. The contact block is used to drive the moving block and the clamping plate to move synchronously.

[0006] Preferably, the connecting frame is fixed to the back of the light-shielding box. A cavity one is formed inside the connecting frame. A fixing frame is fixed to the back of the light-shielding box. A cavity two is formed inside the fixing frame. A movable block is slidably connected to the inner wall of cavity one. A clamping plate is fixed to the outer surface of the movable block, and the clamping plate passes through the connecting frame. A fixing plate is fixed to the outer surface of the movable block. A spring one is fixed to the outer surface of the fixing plate. The end of the spring one away from the fixing plate is fixed to the inner wall of cavity one. An abutment block is fixed to the inner wall of cavity two. A connecting plate is fixed to the outer surface of the fixing frame. When the pull rod is rotated, the connecting plate drives the fixing frame to rotate synchronously, causing the abutment block to push the movable block and clamping plate towards the cable and clamp it, ensuring the cable is securely fixed. When the pull rod is rotated in the opposite direction, the spring one pulls the movable block and clamping plate back to their original position, thereby releasing the cable.

[0007] Preferably, the limiting component includes a pull plate and a pull rod, the pull rod passing through the connecting plate and being fixedly connected to the connecting plate. A groove is formed on the outer surface of the pull rod, and a movable column is slidably connected to the inner wall of the groove. A spring is fixed to the outer surface of the movable column, with one end of the spring away from the movable column fixed to the inner wall of the groove. A sliding rod is fixed to the outer surface of the movable column, with one end of the sliding rod passing through the pull rod and being slidably connected to the pull rod. A limiting groove is formed on the back of the light-shielding box, and a stabilizing element is provided on the outer surface of the connecting plate. When the fixed frame rotates, the movable column is compressed back into the groove, and after aligning with the limiting groove, it is springed in and locked, without affecting the normal rotation of the fixed frame.

[0008] Preferably, the stabilizing component includes a short rod rotatably connected to the outer surface of the connecting plate. A baffle is fixed to the end of the short rod away from the connecting plate, and a second sliding groove is formed at the end of the short rod away from the baffle. A second movable column is slidably connected to the inner wall of the second sliding groove, and a third spring is fixed to the outer surface of the second movable column. The end of the third spring away from the second movable column is fixed to the inner wall of the second sliding groove. A second limiting groove is formed on the outer surface of the connecting plate. The ends of the first and second movable columns away from the second and third springs are all arc-shaped. Rotating the baffle causes the short rod to slide the second movable column into the second sliding groove and compress the third spring. When the second movable column aligns with the second limiting groove, the third spring springs it into the locking short rod, causing the baffle to disengage from the sliding rod. At this time, the pull rod can freely rotate the connecting plate and the fixed frame. After clamping the cable, rotating the baffle in the opposite direction to press against the sliding rod locks the entire mechanism, preventing the fixed frame from shifting and ensuring the cable is securely fixed.

[0009] Preferably, a fixing cylinder is fixed to the bottom of the light-shielding box, and a screw is threaded inside the fixing cylinder. The bottom of the screw is fixed with feet. By rotating the feet, the height of the light-shielding box can be adjusted via the screw, making it easy to level.

[0010] Preferably, a dustproof net is installed on the top of the light-shielding box, and a heat dissipation hole is provided on the back of the light-shielding box. The dustproof net prevents dust from entering, and the heat dissipation hole facilitates heat dissipation.

[0011] Preferably, the surfaces of the contact block and the moving block that are close to each other are both set as inclined surfaces, so that the moving block can move when they contact each other.

[0012] Compared with the prior art, this utility model provides a light-shielding device for a near-infrared moisture meter in a laboratory for leaf re-drying, which has the following beneficial effects: 1. The light-shielding device for this near-infrared moisture analyzer used in the laboratory, through its fixed components, allows for cable clamping. Rotating the pull rod rotates the connecting plate, causing the fixing frame to rotate synchronously. The contact block engages with the moving block, pushing the moving block and clamping plate towards and clamping the cable, thus preventing loosening and detachment during use that could affect instrument operation.

[0013] 2. The light-shielding device of this near-infrared moisture analyzer for leaf re-baking uses a limiting component. When the baffle is rotated, the short rod rotates synchronously, pushing the movable column two into the slide groove two and compressing the spring three. When the movable column two aligns with the limiting groove two, the spring three springs it into the locking short rod, preventing the baffle from rotating on its own. At the same time, the baffle disengages from the slide rod, allowing the pull rod to drive the connecting plate and the fixed frame to rotate freely. At this time, the rotation of the fixed frame will squeeze the movable column one back into the slide groove one, compressing the spring two until it aligns with the limiting groove one, after which the spring two springs it into the slide, synchronously driving the slide rod to reciprocate to ensure smooth rotation of the connecting plate. After clamping the cable, rotating the baffle in the opposite direction to make it abut against the slide rod will lock the slide rod, pull rod, and connecting plate, preventing the fixed frame from shifting and ensuring the cable is securely fixed. Attached Figure Description

[0014] Figure 1 This is a front view structural diagram of the present invention; Figure 2 This is a schematic diagram of the rear view structure of this utility model; Figure 3 This is a front view structural diagram of the light-blocking door panel, magnetic strip, and sealing strip of this utility model; Figure 4 This is an exploded view of the fixed cylinder, screw, and base of this utility model; Figure 5 This is a schematic diagram of the internal structure of the fixing component and the limiting component of this utility model; Figure 6 This is an exploded view of some of the fixing and limiting components of this utility model; Figure 7 This utility model Figure 6 A schematic diagram of the enlarged structure of A in the middle; Figure 8This is a side view of the exploded structure of some of the limiting components of this utility model.

[0015] In the diagram: 1. Light-shielding box; 2. Light-shielding door panel; 3. Magnetic strip; 4. Sealing strip; 5. Fixing cylinder; 6. Screw; 7. Base; 8. Fixing assembly; 80. Connecting frame; 81. Cavity 1; 82. Fixing frame; 83. Moving block; 84. Clamping plate; 85. Fixing plate; 86. Spring 1; 87. Abutting block; 88. Cavity 2; 89. Connecting plate; 9. Limiting assembly; 90. Pull rod; 91. Slide groove 1; 92. Movable column 1; 93. Spring 2; 94. Slide rod; 95. Limiting groove 1; 96. Stabilizer; 960. Short rod; 961. Slide groove 2; 962. Movable column 2; 963. Spring 3; 964. Baffle; 965. Limiting groove 2. Detailed Implementation

[0016] like Figures 1-8 As shown, this utility model provides a technical solution: a light-shielding device for a near-infrared moisture meter in a laboratory for leaf re-baking, including a light-shielding box 1, a light-shielding door panel 2 mounted on the outer surface of the light-shielding box 1 via a slide rail, a magnetic strip 3 fixed on the outer surface of the light-shielding door panel 2, a sealing strip 4 installed on the inner side of the light-shielding door panel 2, a data cable through hole on the back of the light-shielding box 1, a grooved handle on the outer surface of the light-shielding door panel 2, and a fixing component 8 and a limiting component 9 provided on the outer surface of the light-shielding box 1; the fixing component 8 includes: a connecting frame 80, a cavity 1 81, a fixing frame 82, a moving block 83, a clamping plate 84, a fixing plate 85, a spring 1 86, a contact block 87, a cavity 2 88, and a connecting plate 89.

[0017] The connecting frame 80 is fixed to the back of the light-shielding box 1. The connecting frame 80 has a cavity 81 inside. The back of the light-shielding box 1 is fixed to a fixing frame 82. The fixing frame 82 has a cavity 88 inside. The inner wall of the cavity 81 is slidably connected to a moving block 83. The outer surface of the moving block 83 is fixed to a clamping plate 84, which passes through the connecting frame 80. The outer surface of the moving block 83 is fixed to a fixing plate 85. The outer surface of the fixing plate 85 is fixed to a spring 86. The end of the spring 86 away from the fixing plate 85 is fixed to the inner wall of the cavity 81. The inner wall of the cavity 88 is fixed to a contact block 87. The outer surface of the fixing frame 82 is fixed to a connecting plate 89. The surfaces of the contact block 87 and the moving block 83 that are close to each other are both set as inclined surfaces. By rotating the pull rod 90, the connecting plate 89 is rotated, so that the fixing frame 82 rotates synchronously. At this point, the contact block 87 contacts the moving block 83, pushing the moving block 83 and the clamping plate 84 towards the cable and clamping them, ensuring the cable is securely fixed and preventing it from loosening and falling off during use, thus affecting the operation of the instrument. When the pull rod 90 and the connecting plate 89 are rotated in the opposite direction, the spring 86 will pull the moving block 83 and the clamping plate 84 back to their original positions, releasing the cable.

[0018] The limiting component 9 includes a pull rod 90, which passes through the connecting plate 89 and is fixedly connected to the connecting plate 89. A groove 91 is formed on the outer surface of the pull rod 90. A movable column 92 is slidably connected to the inner wall of the groove 91. A spring 93 is fixed to the outer surface of the movable column 92. The end of the spring 93 away from the movable column 92 is fixed to the inner wall of the groove 91. A sliding rod 94 is fixed to the outer surface of the movable column 92. The end of the sliding rod 94 away from the movable column 92 passes through the pull rod 90 and is slidably connected to the pull rod 90. A limiting groove 95 is formed on the back of the light-shielding box 1. A stabilizing component 96 is provided on the outer surface of the connecting plate 89. The stabilizing component 96 includes a short rod 960, which is rotatably connected to the outer surface of the connecting plate 89. A baffle 964 is fixed to the end of the short rod 960 away from the connecting plate 89. One end of 964 is provided with a second sliding groove 961. A second movable column 962 is slidably connected to the inner wall of the second sliding groove 961. A third spring 963 is fixed to the outer surface of the second movable column 962. The end of the third spring 963 away from the second movable column 962 is fixed to the inner wall of the second sliding groove 961. A second limiting groove 965 is provided on the outer surface of the connecting plate 89. The ends of the first movable column 92 and the second movable column 962 away from the second spring 93 and the third spring 963 are all set to be arc-shaped. When the baffle 964 is rotated, the short rod 960 rotates synchronously. The second movable column 962 is squeezed and slides into the second sliding groove 961. The third spring 963 is compressed. When the second movable column 962 is aligned with the second limiting groove 965, the third spring 963 pushes it into the groove to lock the short rod 960 and prevent the baffle 964 from rotating. At this time, the baffle 964 is disengaged from the sliding rod 94, allowing the pull rod 90 to drive the connecting plate 89 and the fixed frame 82 to rotate freely. When the fixed frame 82 rotates, the movable column 92 is compressed back into the sliding groove 91 by the limiting groove 95, and the spring 93 is compressed. After alignment, the spring 93 springs it into the limiting groove 95, while simultaneously driving the sliding rod 94 to reciprocate, ensuring the smooth rotation of the connecting plate 89. After clamping the cable, the baffle 964 is rotated in the opposite direction to press against the sliding rod 94, thereby locking the sliding rod 94, the pull rod 90, and the connecting plate 89, preventing the fixed frame 82 from accidentally shifting and ensuring the cable is securely fixed.

[0019] The bottom of the light-shielding box 1 is fixed with a fixing cylinder 5, and the inside of the fixing cylinder 5 is connected with a screw rod 6. The bottom of the screw rod 6 is fixed with a foot 7. A dustproof net is installed on the top of the light-shielding box 1. A heat dissipation hole is opened on the back of the light-shielding box 1. By rotating each foot 7, the height of the light-shielding box 1 can be adjusted by the screw rod 6 to facilitate leveling. The dustproof net prevents dust from entering, and the heat dissipation hole facilitates heat dissipation.

[0020] In use, place the instrument inside the light-shielding box 1 and thread the connecting cable through the data cable hole. Then, close the light-shielding door 2 using the grooved handle. The magnetic strips 3 attract each other to lock the light-shielding door 2. Adjust the height of the light-shielding box 1 by rotating the feet 7 and using the screws 6 for leveling. In use, rotate the baffle 964. The short rod 960 rotates synchronously, causing the outer surface of the movable column 962 to contact the inner wall of the limiting groove 965, allowing the movable column 962 to move into the sliding groove 961. The spring 963 is compressed, and when the movable column 962 moves into the sliding groove 961, the instrument is ready to move. When the position of the movable column 962 is parallel to the limiting groove 965, the spring 963 is released, which drives the movable column 962 into the limiting groove 965, stabilizing the short rod 960 and preventing the baffle 964 from rotating. At this time, the baffle 964 disengages from the sliding rod 94, and the connecting plate 89 can be rotated normally via the pull rod 90, thereby driving the fixed frame 82 to rotate synchronously. At this time, the outer surface of the contact block 87 abuts against the outer surface of the moving block 83, which drives the moving block 83 and the clamping plate 84 to move closer to the cable and clamp it, thus fixing the cable and preventing it from being damaged. If the cable becomes loose or detached during use, affecting the normal operation of the instrument, and simultaneously, when the pull rod 90 and connecting plate 89 drive the fixed frame 82 to rotate, the outer surface of the movable column 92 abuts against the inner wall of the limiting groove 95, allowing the movable column 92 to move into the slide groove 91, compressing the spring 93. When the movable column 92 is parallel to the limiting groove 95, the spring 93 releases, allowing the movable column 92 to enter the limiting groove 95. At the same time, the movable column 92 drives the slide rod 94 to reciprocate synchronously, without affecting the normal rotation of the connecting plate 89. When the clamping plate 84... When clamping the cable, rotate the baffle 964 again so that the baffle 964 abuts against the outer surface of the slide bar 94, which limits the slide bar 94, the pull rod 90, and the connecting plate 89, thus stabilizing the fixed frame 82 and preventing accidental contact that could cause the fixed frame 82 to shift and affect the cable fixation. When it is necessary to loosen the cable, repeat the above steps, reverse the connecting plate 89 and the pull rod 90, and the spring 86 will pull back the moving block 83 and the clamping plate 84 to detach from the cable. The light-shielding box 1 and the light-shielding door panel 2 are made of high-strength engineering plastic with a black matte finish, which has good light-shielding performance and mechanical strength.

[0021] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

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