Dark box uv analyzer with reversible sample

Abstract

The utility model provides a dark box formula ultraviolet appearance of sample can turn over, including appearance body, setting in detection cavity on the appearance body, setting ultraviolet light source in detection cavity on the appearance body, still include two rotating holes respectively set in the left and right ends of appearance body, two rotating rods respectively rotating set on two rotating holes, two limit plates respectively set on two rotating rods, one end fixedly set in two rotating rods, two clamps in detection cavity, two drive mechanisms respectively set in the other end of two rotating rods, need not hand to stretch into ultraviolet appearance to carry out the turning of sanitary towel, not only can not lead to the risk of skin sunburn, light ageing and suffering from skin cancer, and the operation process is relatively simple.

Description

Technical Field

[0001] This utility model relates to the field of detection equipment technology, specifically to a dark box-type ultraviolet analyzer with a flip-up sample. Background Technology

[0002] A darkroom-type ultraviolet (UV) analyzer is a fully enclosed instrument primarily used for spot observation and fluorescence detection in thin-layer and paper chromatography. Its core functionality relies on short-wavelength (254nm) and long-wavelength (365nm) UV light sources, with some models supporting mixed wavelengths or visible light modes. This instrument can operate without a darkroom, and its UV-resistant glass and built-in reflective film enhance observation clarity and safety. It is suitable for detecting fluorescent substances in various fields, including biology, chemistry, pharmaceuticals, and food.

[0003] Sanitary napkins may use substances such as fluorescent whitening agents during the manufacturing process. These substances emit visible light under ultraviolet light. A darkroom-type ultraviolet analyzer irradiates the sample with ultraviolet light of a specific wavelength to observe the luminescence of fluorescent substances, thereby determining whether their content meets safety standards.

[0004] Traditional darkroom-type ultraviolet (UV) analyzers require testing both sides of sanitary napkins. This necessitates manually opening the analyzer's cover, reaching inside to remove the napkin, turning it inside out, and then placing it back into the analyzer. This process exposes the hands to UV radiation, increasing the risk of sunburn and photoaging. Repeated operation over a long period may also increase the risk of skin cancer. Furthermore, the process involves repeatedly removing and placing the napkin inside, making direct flipping within the analyzer impossible and cumbersome. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings and deficiencies of existing technologies by providing a dark-box ultraviolet analyzer with a flip-up sample.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a dark box-type ultraviolet analyzer with a flip-up sample, comprising an analyzer body, a detection cavity disposed on the analyzer body, an ultraviolet light source disposed on the analyzer body within the detection cavity, and further comprising two rotating holes respectively disposed at the left and right ends of the analyzer body, two rotating rods respectively rotatably disposed on the two rotating holes, a limiting plate respectively disposed on the two rotating rods for limiting the lateral movement of the rotating rods in the rotating holes and reducing the ultraviolet light transmitted outward from the rotating holes, two clips respectively fixedly disposed at one end of the two rotating rods within the detection cavity for clamping the side end face of a sanitary napkin, and two driving mechanisms respectively disposed at the other end of the two rotating rods for driving the rotating rods to rotate and fixing the rotation angle of the rotating rods after rotation.

[0007] A further improvement is made to the driving mechanism, which includes a driving handle at the other end of the rotating rod, a fixed base with one end fixed to the side end face of the analyzer body and located on one side of the rotating rod, a sliding slot on the side end face of the fixed base, two corresponding slots on the side end face of the rotating rod and symmetrically arranged for corresponding to the position of the sliding slot each time the rotating rod rotates 180 degrees, a locking rod with one end slidably disposed on the fixed base in the sliding slot and the other end in clearance fit with the corresponding slot, a compression spring disposed between one end of the locking rod and the fixed base in the sliding slot for pushing the other end of the locking rod into the corresponding slot after the position of the corresponding slot and the sliding slot are aligned, thereby limiting the rotation angle of the rotating rod, and two single-sided inclined surfaces disposed on the side end face of the rotating rod and respectively connected to the two corresponding slots for pushing the other end of the locking rod to slide laterally out of the corresponding slot when the rotating rod is rotated in the same direction by a predetermined external force.

[0008] Further effects: When it is necessary to control the rotation of the rotating rod, the manual control handle drives the rotating rod to rotate in the same direction (such as clockwise or counterclockwise). When the rotating rod rotates to 180 degrees, the corresponding slot and sliding slot positions align. The compressed spring releases its elastic potential energy, pushing the locking rod to slide laterally in the sliding slot, causing the other end of the locking rod to engage in the corresponding slot. The corresponding slot restricts the reverse rotation of the rotating rod and also provides rotational resistance for the forward rotation, reducing the occurrence of automatic rotation of the rotating rod. If it is necessary to disengage the other end of the locking rod from the corresponding slot, then... Continuing to control the rotation of the lever in the same direction, the single-sided inclined surface contacts the other end of the locking lever, causing the locking lever to move laterally towards the compression spring as the lever rotates. This compresses the spring and generates elastic potential energy until the other end of the locking lever disengages from the corresponding slot, until the next corresponding slot aligns with the sliding slot. This design continuously provides resistance to the rotation of the lever as it rotates 180 degrees. This structure allows the user to simultaneously drive the left and right drive handles on both sides, controlling the two levers to rotate in the same direction, thus facilitating the flipping action of the sanitary napkin.

[0009] A further improvement is that: the side end face of the fixed base is provided with a side end opening, which is connected to the sliding slot. The diameter or width of the side end opening is smaller than the diameter or width of the sliding slot. One end of the locking rod is fixedly provided with a release rod, and the other end of the release rod passes through the side end opening and is located outside the fixed base. The release rod is slidably engaged with the side end opening.

[0010] Further effect: When it is necessary to release the rotation restriction of the rotating rod by the locking rod, the other end of the release rod can be pulled outward by hand, which will move the other end of the locking rod away from the rotating rod and disengage the other end of the locking rod from the corresponding slot.

[0011] A further improvement is that the other end of the release lever is provided with a pull plate to facilitate the hand pulling the release lever outward.

[0012] A further improvement is that the other end face of the locking rod is an arc surface.

[0013] Further benefit: The curved surface design makes it easier for the other end of the locking rod to engage with the single-sided inclined surface.

[0014] After adopting the above technical solution, the beneficial effects of this utility model are as follows: When it is necessary to conduct ultraviolet light irradiation testing on sanitary napkins, the sanitary napkin is first placed in the testing chamber and held at the left and right ends of the sanitary napkin by two clips on the left and right sides respectively. When the ultraviolet light irradiates the sanitary napkin on the front side and it is necessary to turn the sanitary napkin over, the driving mechanism drives the rotating roller to rotate, and the rotation angle of the rotating rod is fixed after rotation. Thus, the clips drive the sanitary napkin to turn over and fix the angle. There is no need to put your hand into the ultraviolet analyzer to turn the sanitary napkin over. This not only avoids the risk of sunburn, photoaging and skin cancer, but also makes the operation process relatively simple. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a front view of the present invention; Figure 2 This is a front sectional view of the present invention; Figure 3 This is a side view of the present invention; Figure 4 This is a side sectional view of the rotating rod and the fixed seat in this utility model; Figure 5 This is a side sectional view of the rotating rod, the corresponding slot, and the single-sided inclined plane in this utility model.

[0017] Explanation of reference numerals in the attached drawings: Analyzer body 1, Detection chamber 2, Ultraviolet light source 3, Rotating rod 4, Limiting plate 5, Clip 6, Drive handle 7, Fixed base 8, Sliding slot 9, Corresponding slot 10, Locking rod 11, Compression spring 12, Single-sided inclined plane 13, Side end opening 14, Release rod 15, Pull plate 16. Detailed Implementation

[0018] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0019] See Figures 1 to 5As shown, the technical solution adopted in this specific embodiment is: a flip-up sample dark box type ultraviolet analyzer, including an analyzer body 1, a detection cavity 2 disposed on the analyzer body 1, an ultraviolet light source 3 disposed on the analyzer body 1 and located in the detection cavity 2, and further including two rotating holes respectively disposed at the left and right ends of the analyzer body 1, two rotating rods 4 respectively rotatably disposed on the two rotating holes, a limiting plate 5 respectively disposed on the two rotating rods 4 for limiting the lateral movement of the rotating rods 4 in the rotating holes and reducing the ultraviolet light transmitted outward from the rotating holes, two clips 6 respectively fixedly disposed at one end of the two rotating rods 4 and located in the detection cavity 2 for clamping the side end face of the sanitary napkin, and two driving mechanisms respectively disposed at the other end of the two rotating rods 4 for driving the rotating rods 4 to rotate and fixing the rotation angle of the rotating rods 4 after rotation.

[0020] The analyzer body 1, detection chamber 2, and ultraviolet light source 3 are based on the existing dark box type ultraviolet analyzer structure, and will not be described in detail here. The diameter of the rotating hole is 1-5 mm larger than the diameter of the rotating rod 4 to provide rotation space for the rotating rod 4. Two limiting plates 5 are provided on each rotating rod 4. The diameter of the limiting plates 5 is larger than the diameter of the rotating hole, and the two limiting plates 5 are respectively attached to the inner and outer walls of the analyzer body 1. The clip 6 is a common clothespin 6. The clip 6 has a V-shaped structure and is divided into upper and lower parts. The upper or lower part is fixed to the rotating rod 4 by adhesive or screws, or by an opening for fitting. The other end is a free end to facilitate pressing the opening of the clip 6 to open and close.

[0021] The driving mechanism includes a driving handle 7 disposed at the other end of the rotating rod 4, a fixed base 8 fixed at one end to the side end face of the analyzer body 1 and located on one side of the rotating rod 4, a sliding slot 9 opened on the side end face of the fixed base 8, two corresponding slots 10 opened on the side end face of the rotating rod 4 and symmetrically arranged for corresponding to the position of the sliding slot 9 when the rotating rod 4 rotates 180 degrees, and a locking mechanism with one end slidably disposed on the fixed base 8 at the sliding slot 9 and the other end in clearance fit with the corresponding slot 10. The rotating rod 4 is provided with a lever 11, a compression spring 12 located between one end of the locking lever 11 and the fixed seat 8 within a sliding slot 9, which pushes the other end of the locking lever 11 into the corresponding slot 10 after the corresponding slot 10 and the sliding slot 9 are aligned, thereby limiting the rotation angle of the rotating rod 4; and two single-sided inclined surfaces 13 located on the side end face of the rotating rod 4 and connected to the two corresponding slots 10, which push the other end of the locking lever 11 to slide laterally out of the corresponding slot 10 when the rotating rod 4 is rotated in the same direction by a predetermined external force. The fixed seat 8 is fixed to the side end face of the analyzer body 1 by welding, bonding or bolting. Each rotating rod 4 has a drive handle 7, a fixed seat 8, and corresponding sliding slot 9, corresponding slot 10, locking lever 11, compression spring 12, and single-sided inclined surface 13 at the other end. A compression spring 12 abuts against one end of the engaging rod 11 and the inner wall of the fixed seat 8. A sliding slot 9 has the same shape as one end of the engaging rod 11 and is clearance-fitted to guide the lateral movement of the engaging rod 11. Figure 5 As shown, two single-sided inclined surfaces 13 are respectively set on the sides of two corresponding slots 10. The two corresponding slots 10 and the single-sided inclined surfaces 13 are arranged in a ring-shaped equidistant manner. The setting position of the single-sided inclined surfaces 13 determines the clockwise or counterclockwise direction of the rotating rod 4, as shown. Figure 5 The position shown limits the clockwise direction of the rotating rod 4. If the rotating rod 4 rotates counterclockwise, the other end of the locking rod 11 is engaged at the right angle position of the corresponding slot 10, thus restricting the counterclockwise rotation of the rotating rod 4. Conversely, the opposite effect occurs. The drive handle 7 is perpendicular to the axis of the rotating rod 4 and located on one side of the fixed base 8 to prevent the fixed base 8 from interfering with the driving of the drive handle 7. The drive handle 7 is fixed to the other end of the rotating rod 4 by adhesive, bolts, or welding.

[0022] The side end face of the fixed base 8 is provided with a side end opening 14, which is connected to the sliding groove 9. The diameter or width of the side end opening 14 is smaller than the diameter or width of the sliding groove 9. One end of the locking rod 11 is fixedly provided with a release rod 15, and the other end of the release rod 15 passes through the side end opening 14 and is located outside the fixed base 8, and the release rod 15 is slidably engaged with the side end opening 14. The side end opening 14 can be a circular hole or a square hole, and the sliding groove 9 can also be a corresponding circular groove or a square groove. In this case, the shape of the locking rod 11 should also be adapted to the shape of the sliding groove 9.

[0023] The other end of the release lever 15 is provided with a pull plate 16 to facilitate pulling the release lever 15 outward by hand. The pull plate 16 is fixed to the other end of the release lever 15 by adhesive or welding.

[0024] The other end face of the locking rod 11 is an arc surface.

[0025] The working principle of this utility model is as follows: When it is necessary to perform ultraviolet light irradiation testing on a sanitary napkin, the sanitary napkin is first placed in the testing chamber 2 and held at the left and right ends by two clips 6. After the ultraviolet light irradiates the front of the sanitary napkin for testing, when it is necessary to flip the sanitary napkin, the hand-controlled drive handle 7 drives the rotating rod 4 to rotate in the same direction (such as clockwise or counterclockwise). When the rotating rod 4 rotates to 180 degrees, the positions of the corresponding slots 10 and sliding slots 9 are aligned, and the compression spring 12 is released. The elastic potential energy is released to push the locking rod 11 to slide laterally in the sliding slot 9, so that the other end of the locking rod 11 is locked into the corresponding slot 10. The corresponding slot 10 restricts the reverse rotation of the rotating rod 4 and also provides rotational resistance for the forward rotation of the rotating rod 4, which can reduce the phenomenon of the rotating rod 4 rotating automatically. Thus, the clip 6 drives the sanitary napkin to turn over and fix the angle. There is no need to put your hand into the ultraviolet analyzer to turn the sanitary napkin over. This not only avoids the risk of sunburn, photoaging and skin cancer, but also makes the operation process simpler. If it is necessary to disengage the other end of the locking rod 11 from the corresponding slot 10, the rotating rod 4 is controlled to rotate in the same direction. The single-sided inclined surface 13 contacts the other end of the locking rod 11, causing the locking rod 11 to move laterally towards the compression spring 12 as the rotating rod 4 rotates. This generates elastic potential energy in the compression spring 12 until the other end of the locking rod 11 disengages from the corresponding slot 10, until the next corresponding slot 10 aligns with the sliding slot 9. This structure can continuously provide resistance to the rotation of the rotating rod 4 as it rotates 180 degrees. This structure allows the left and right hands to simultaneously drive the left and right drive handles 7, controlling the two rotating rods 4 to rotate in the same direction, thus facilitating the flipping action of the sanitary napkin. When it is necessary to release the rotation restriction of the locking rod 11 on the rotating rod 4, the other end of the release rod 15 can be pulled outward by hand to move the other end of the locking rod 11 away from the rotating rod 4, so that the other end of the locking rod 11 is disengaged from the corresponding slot 10. The arc surface design makes it easier for the other end of the locking rod 11 to form a driving engagement with the single-sided inclined surface.

[0026] This utility model aims to protect the structure of the product. The model numbers of the individual components are not the subject of this utility model's protection and are already known technology. Any component on the market that can achieve the functions described above can be used as a darkroom-type ultraviolet analyzer for flip-up samples. Therefore, the model numbers and other parameters of the components are not described in detail in this utility model. The contribution of this utility model lies in the scientific combination of the various components.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions provided are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents. Any aspects of this utility model not detailed herein are well-known to those skilled in the art.

Claims

1. A flip-up sample darkroom-type ultraviolet analyzer, comprising an analyzer body, a detection chamber disposed on the analyzer body, and an ultraviolet light source disposed on the analyzer body within the detection chamber, characterized in that: It also includes two rotating holes respectively disposed at the left and right ends of the analyzer body, two rotating rods respectively rotatably disposed on the two rotating holes, a limiting plate respectively disposed on the two rotating rods to limit the lateral movement of the rotating rods in the rotating holes and reduce the ultraviolet light transmitted out of the rotating holes, two clips respectively fixedly disposed on one end of the two rotating rods and located in the detection cavity for holding the side end face of the sanitary napkin, and two drive mechanisms respectively disposed on the other end of the two rotating rods for driving the rotating rods to rotate and fixing the rotation angle of the rotating rods after rotation.

2. The dark-box ultraviolet analyzer with flip-up sample as described in claim 1, characterized in that: The driving mechanism includes a driving handle disposed at the other end of the rotating rod, a fixed base with one end fixed to the side end face of the analyzer body and located on one side of the rotating rod, a sliding slot opened on the side end face of the fixed base, two corresponding slots opened on the side end face of the rotating rod and symmetrically arranged for corresponding to the position of the sliding slot when the rotating rod rotates 180 degrees, a locking rod with one end slidably disposed on the fixed base in the sliding slot and the other end in clearance fit with the corresponding slot, a compression spring disposed between one end of the locking rod and the fixed base in the sliding slot for pushing the other end of the locking rod into the corresponding slot after the position of the corresponding slot and the sliding slot are aligned, thereby limiting the rotation angle of the rotating rod, and two single-sided inclined surfaces disposed on the side end face of the rotating rod and respectively connected to the two corresponding slots for pushing the other end of the locking rod to slide laterally out of the corresponding slot when the rotating rod is rotated in the same direction by a predetermined external force.

3. The dark-box ultraviolet analyzer with flip-up sample as described in claim 2, characterized in that: The side end face of the fixed base is provided with a side end opening, which is connected to the sliding slot. The diameter or width of the side end opening is smaller than the diameter or width of the sliding slot. One end of the locking rod is fixedly provided with a release rod, and the other end of the release rod passes through the side end opening and is located outside the fixed base. The release rod is slidably engaged with the side end opening.

4. The dark-box ultraviolet analyzer with flip-up sample as described in claim 3, characterized in that: The other end of the release lever is provided with a pull plate to facilitate pulling the release lever outward by hand.

5. The dark-box ultraviolet analyzer with flip-up sample as described in claim 2, characterized in that: The other end face of the locking rod is an arc surface.

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