A direct light detector for ultraviolet spectrophotometer

Abstract

The utility model relates to ultraviolet spectrophotometer technical field discloses a kind of direct light detector for ultraviolet spectrophotometer, including main body structure, the main body structure includes sealing cover, light transmission plate and mounting seat, the left side of the sealing cover is equipped with first sealing groove, O-ring is equipped in the first sealing groove, the light transmission plate is compacted on the O-ring and is sealed with the sealing cover Connection, the right side of the sealing cover is equipped with mounting seat, the left side in the sealing cover is equipped with baffle ring, the right side of the baffle ring is equipped with photodiode array detector, fixed structure, the fixed structure includes connecting ring, fixed groove and groove, the right side of the photodiode array detector is equipped with connecting ring;The utility model realizes the accurate stable fixing of photodiode array detector, effectively insulates stray light, dust and humidity interference, installation is convenient to dismount, improves the measurement accuracy, operating stability and maintenance efficiency of ultraviolet spectrophotometer.

Description

Technical Field

[0001] This utility model relates to the field of ultraviolet spectrophotometer technology, specifically to a direct light detector for an ultraviolet spectrophotometer. Background Technology

[0002] Ultraviolet (UV) spectrophotometers are an effective means of studying the composition, structure, and interactions between substances based on their absorption spectra. They have wide applications in pharmaceutical analysis. UV spectrophotometers can select different wavelengths of light arbitrarily within the UV-Vis region.

[0003] Existing UV spectrophotometer detectors mostly employ fixed or simple snap-fit ​​installations, which suffer from problems such as inaccurate positioning, easy loosening, and optical path misalignment, affecting measurement repeatability and accuracy. Furthermore, some structures have poor sealing, making it difficult to effectively isolate ambient light, moisture, and dust, leading to increased signal noise and baseline drift. Simultaneously, detector replacement and calibration are cumbersome, requiring specialized tools and resulting in low maintenance efficiency. To address these issues, we propose a direct-light detector for UV spectrophotometers. Utility Model Content

[0004] The purpose of this invention is to provide a direct light detector for an ultraviolet spectrophotometer to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a direct light detector for an ultraviolet spectrophotometer, comprising a main structure, the main structure including a sealing cover, a light-transmitting plate and a mounting base, a first sealing groove provided on the left side of the sealing cover, an O-ring provided in the first sealing groove, the light-transmitting plate pressed against the O-ring and sealed to the sealing cover, a mounting base installed on the right side of the sealing cover, a retaining ring installed on the left side inside the sealing cover, and a photodiode array detector provided on the right side of the retaining ring; A fixing structure includes a connecting ring, fixing grooves, and recesses. A connecting ring is installed on the right side of the photodiode array detector. Multiple fixing grooves are provided on the inner side of the connecting ring, and recesses are provided on the outer side of the fixing grooves. The outer side of the recesses is installed on the inner side of the sealing cover. Fixing rods are provided inside the fixing grooves and recesses. Protective pads are installed on the outer walls of the fixing rods. Multiple fixing rods are located inside multiple fixing cylinders. A handle is installed on one side of the outer wall of the fixing rod. The handle passes through a first positioning groove to the outer side of the fixing cylinder. Multiple fixing cylinders are mounted on the outer wall of the fixing base. A positioning block is installed on the right side of the fixing base. The positioning block is located inside a second positioning groove, which is located inside the mounting base.

[0006] Preferably, the interior of the sealing cover is correspondingly positioned to the photodiode array detector, and the sealing cover and the mounting base are connected by threads.

[0007] Preferably, the photodiode array detector and the connecting ring are fixedly connected, and the connecting ring and the fixing groove are integrally formed.

[0008] Preferably, the fixing groove and the recess are correspondingly arranged, and the fixing rod and the protective pad are tightly fitted together.

[0009] Preferably, the middle positions of the groove, the fixing groove, the fixing rod, the fixing cylinder, and the fixing seat are on the same horizontal line.

[0010] Preferably, the fixing rod and the fixing cylinder are slidably connected, and the plurality of fixing cylinders are arranged at equal intervals.

[0011] Preferably, the fixed rod and the handle are fixedly connected, and the handle and the first positioning groove are slidably connected.

[0012] Preferably, the first positioning groove and the fixed cylinder are integrated, and the first positioning groove is L-shaped.

[0013] Preferably, the fixed base and the positioning block are fixedly connected, and the middle positions of the fixed base, the positioning block and the mounting base are on the same horizontal line.

[0014] Preferably, the positioning block and the second positioning groove are correspondingly arranged, and the second positioning groove and the mounting base are integrated.

[0015] Compared with existing technologies, the beneficial effects of this utility model are: The detector is evenly clamped by multiple fixing rods and protective pads to prevent displacement. The handle is sliding control, allowing for quick assembly and disassembly without tools, which is convenient for maintenance. All components are coaxially aligned to ensure optical path accuracy and reduce spot error. The sealed structure effectively prevents dust, moisture and stray light. The threaded connection and positioning block groove prevent loosening and ensure long-term stable operation. The overall design supports quick cleaning, replacement and calibration, which significantly reduces downtime. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0017] Figure 1 This is a front view structural diagram of the present invention; Figure 2 This is a frontal cross-sectional view of the present invention. Figure 3 This is a partial frontal sectional view of the fixing structure of this utility model; Figure 4 This is a partial side view sectional diagram of the fixing structure of this utility model.

[0018] In the diagram: 1. Main structure; 2. Fixing structure; 101. Sealing cover; 102. Light-transmitting plate; 103. Mounting base; 104. Retaining ring; 105. Photodiode array detector; 201. Connecting ring; 202. Fixing groove; 203. Groove; 204. Fixing rod; 205. Protective pad; 206. Fixing cylinder; 207. Handle; 208. First positioning groove; 209. Fixing base; 210. Positioning block; 211. Second positioning groove. Detailed Implementation

[0019] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Example

[0022] Please see Figure 1-4 This utility model provides a technical solution for a direct light detector for an ultraviolet spectrophotometer: A direct light detector for an ultraviolet spectrophotometer includes a main structure 1, which includes a sealing cover 101, a light-transmitting plate 102, and a mounting base 103. The left side of the sealing cover 101 is provided with a first sealing groove, and an O-ring is provided in the first sealing groove. The light-transmitting plate 102 is pressed on the O-ring and sealed to the sealing cover 101, effectively isolating dust, moisture and stray light, and ensuring measurement stability. The mounting base 103 is installed on the right side of the sealing cover 101. A retaining ring 104 is installed on the left side inside the sealing cover 101, and a photodiode array detector 105 is provided on the right side of the retaining ring 104. The fixing structure 2 includes a connecting ring 201, a fixing groove 202, and a recess 203. The connecting ring 201 is installed on the right side of the photodiode array detector 105. Multiple fixing grooves 202 are provided on the inner side of the connecting ring 201, and a recess 203 is provided on the outer side of the fixing grooves 202. The outer side of the recess 203 is installed on the inner side of the sealing cover 101. Fixing rods 204 are provided inside the fixing grooves 202 and the recess 203. A protective pad 205 is installed on the outer wall of the fixing rods 204. Multiple fixing rods 204 are located inside multiple fixing cylinders 206. A handle 207 is installed on one side of the outer wall of the fixing rods 204. The handle 207 passes through the first positioning groove 208 to the outer side of the fixing cylinder 206. Multiple fixing cylinders 206 are mounted on the outer wall of the fixing seat 209. A positioning block 210 is installed on the right side of the fixing seat 209. The positioning block 210 is located inside the second positioning groove 211. The second positioning groove 211 is located inside the mounting seat 103.

[0023] Furthermore, a compression spring is sleeved around the periphery of the fixing rod 204. The compression spring is located inside the fixing cylinder 206. One end of the compression spring abuts against the flange on the outer wall of the fixing rod 204, and the other end abuts against the inner wall of the fixing cylinder 206, which is used to provide a constant elastic thrust for the fixing rod 204 to the directional light diode array detector 105.

[0024] The interior of the sealing cover 101 is correspondingly positioned with respect to the photodiode array detector 105, and the sealing cover 101 and the mounting base 103 are connected by threads. Example

[0025] This utility model also provides another solution. Based on the first embodiment, the photodiode array detector 105 is fixedly connected to the connecting ring 201, the connecting ring 201 and the fixing groove 202 are integrated, the fixing groove 202 and the recess 203 are correspondingly arranged, and the fixing rod 204 and the protective pad 205 are tightly fitted to avoid direct metal contact damaging the photoelectric chip and improve its service life. The middle positions of the recess 203, the fixing groove 202, the fixing rod 204, the fixing cylinder 206, and the fixing base 209 are on the same horizontal line. The fixing rod 204 and the fixing cylinder 206 are slidably connected, and multiple fixing cylinders 206 are equidistantly arranged to achieve [the desired effect]. The uniform clamping avoids displacement caused by single-point force. The fixed rod 204 and handle 207 are fixedly connected, while the handle 207 and the first positioning groove 208 are slidably connected. Installation and disassembly can be completed without tools, which is suitable for frequent replacement or maintenance scenarios. The first positioning groove 208 and fixed cylinder 206 are integrated. The first positioning groove 208 is L-shaped. The fixed base 209 and positioning block 210 are fixedly connected. The middle positions of the fixed base 209, the positioning block 210 and the mounting base 103 are on the same horizontal line to ensure that the detector and the optical path are aligned and reduce the light spot offset error. The positioning block 210 and the second positioning groove 211 are correspondingly set. The second positioning groove 211 and the mounting base 103 are integrated.

[0026] Working principle: Upon initial use, insert the photodiode array detector 105 into the sealing cover 101, where it is stopped by the retaining ring 104 to prevent excessive forward movement. Align the fixing groove 202 on the connecting ring 201 with the groove 203 inside the sealing cover 101 to achieve initial positioning. Subsequently, the operator first pulls handle 207 and slides it outward along the longitudinal groove of the L-shaped first positioning groove 208. This process compresses the spring, causing the fixing rod 204 and the protective pad 205 to retract completely. Then, the photodiode array detector 105 is inserted. Next, the operator releases handle 207, and the compressed spring immediately releases its elastic force, pushing the fixing rod 204 and the protective pad 205 inward, constantly pressing the detector 105 against the retaining ring 104, achieving true 'elastic compression'. Finally, the operator rotates handle 207 to enter the transverse groove of the L-shaped groove 208, locking the fixing rod 204 in the compressed position to prevent it from loosening. When the fixing rod 204 is fully pushed in and locked in the horizontal position, the detector is stably fixed. At this time, the mounting base 103 and the sealing cover 101 are tightened by threads, and the positioning block 210 is embedded in the second positioning groove 211 of the mounting base 103 to achieve precise positioning and anti-rotation of the overall structure, ensuring the consistency of the optical axis. The device can be directly installed into the optical path system of the ultraviolet spectrophotometer to receive direct ultraviolet beams and complete high-precision signal acquisition.

[0027] Although embodiments of the present utility have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present utility, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A direct light detector for an ultraviolet spectrophotometer, characterized in that, include The main structure (1) includes a sealing cover (101), a light-transmitting plate (102), and a mounting base (103). The sealing cover (101) has a first sealing groove on its left side, and an O-ring is provided in the first sealing groove. The light-transmitting plate (102) is pressed against the O-ring and sealed to the sealing cover (101). The mounting base (103) is installed on the right side of the sealing cover (101). A retaining ring (104) is installed on the left side inside the sealing cover (101). A photodiode array detector (105) is provided on the right side of the retaining ring (104). A fixing structure (2) is provided, comprising a connecting ring (201), a fixing groove (202), and a recess (203). The connecting ring (201) is installed on the right side of the photodiode array detector (105). The inner side of the connecting ring (201) is provided with multiple fixing grooves (202), and the outer side of the fixing grooves (202) is provided with recesses (203). The outer side of the recesses (203) is installed on the inner side of the sealing cover (101). Fixing rods (204) are provided inside the fixing grooves (202) and inside the recesses (203). The outer wall of the fixing rods (204) is installed with... There is a protective pad (205), and multiple fixing rods (204) are located inside multiple fixing cylinders (206). A handle (207) is installed on one side of the outer wall of the fixing rod (204). The handle (207) passes through the first positioning groove (208) to the outside of the fixing cylinder (206). Multiple fixing cylinders (206) are mounted on the outer wall of the fixing seat (209). A positioning block (210) is installed on the right side of the fixing seat (209). The positioning block (210) is located inside the second positioning groove (211). The second positioning groove (211) is located inside the mounting base (103).

2. The direct light detector for an ultraviolet spectrophotometer according to claim 1, characterized in that: The interior of the sealing cover (101) is correspondingly positioned with respect to the photodiode array detector (105), and the sealing cover (101) is threadedly connected to the mounting base (103).

3. A direct light detector for an ultraviolet spectrophotometer according to claim 2, characterized in that: The photodiode array detector (105) is fixedly connected to the connecting ring (201), and the connecting ring (201) and the fixing groove (202) are integrated.

4. A direct light detector for an ultraviolet spectrophotometer according to claim 3, characterized in that: The fixing groove (202) and the recess (203) are correspondingly arranged, and the fixing rod (204) and the protective pad (205) are tightly fitted together.

5. A direct light detector for an ultraviolet spectrophotometer according to claim 4, characterized in that: The middle positions of the groove (203), the fixing groove (202), the fixing rod (204), the fixing cylinder (206), and the fixing seat (209) are on the same horizontal line.

6. A direct light detector for an ultraviolet spectrophotometer according to claim 5, characterized in that: The fixing rod (204) and the fixing cylinder (206) are slidably connected, and the multiple fixing cylinders (206) are arranged at equal intervals.

7. A direct light detector for an ultraviolet spectrophotometer according to claim 6, characterized in that: The fixed rod (204) is fixedly connected to the handle (207), and the handle (207) is slidably connected to the first positioning groove (208).

8. A direct light detector for an ultraviolet spectrophotometer according to claim 7, characterized in that: The first positioning groove (208) and the fixed cylinder (206) are integrated, and the first positioning groove (208) is L-shaped.

9. A direct light detector for an ultraviolet spectrophotometer according to claim 8, characterized in that: The fixed base (209) and the positioning block (210) are fixedly connected, and the middle positions of the fixed base (209), the positioning block (210) and the mounting base (103) are on the same horizontal line.

10. A direct light detector for an ultraviolet spectrophotometer according to claim 9, characterized in that: The positioning block (210) and the second positioning groove (211) are correspondingly arranged, and the second positioning groove (211) and the mounting base (103) are integrated.

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