A UV-visible spectrophotometer with quick sample loading and unloading

Abstract

This invention discloses a rapid sample inlet / outlet UV-Vis spectrophotometer, comprising a controller, a main body, an electrically controlled cover, a sample holder, and a transfer mechanism. The main body contains a detection space, and a sample inlet is located on the top side of the main body. The electrically controlled cover is positioned at the sample inlet and is used to open and close the inlet. The sample holder and transfer mechanism are both located on the side of the main body with the sample inlet. The sample holder is situated on one side of the sample inlet and is divided into a test area and a tested area. The test area accommodates several sample tubes to be tested, and the tested area accommodates several tested sample tubes. The transfer mechanism is located on the side of the sample inlet away from the detection space, and the transfer mechanism and the sample inlet are spaced apart. The technical solution proposed in this invention eliminates the need for frequent manual operation during the entire detection process, greatly improving detection efficiency and avoiding human error.

Description

Technical Field

[0001] This invention relates to the field of ultraviolet-visible spectrophotometer technology, and particularly to an ultraviolet-visible spectrophotometer with rapid sample loading and unloading. Background Technology

[0002] A UV-Vis spectrophotometer is an analytical instrument based on the principle of UV-Vis spectrophotometry, utilizing the absorption of radiation by molecules in the UV-Vis spectral region for analysis. It mainly consists of a light source, monochromator, absorption cell, detector, and signal processor. The function of the light source is to provide a sufficiently intense, stable, and continuous spectrum. Hydrogen lamps or deuterium lamps are typically used in the UV region, while tungsten lamps or halogen tungsten lamps are typically used in the visible region. The function of the monochromator is to decompose the composite light emitted by the light source and separate the monochromatic light of the desired wavelength. Dispersive elements include prisms and gratings. Glass absorption cells are used for measurements in the visible region, while quartz absorption cells are required for measurements in the UV region. The function of the detector is to detect the intensity of transmitted light through a photoelectric conversion element, converting the optical signal into an electrical signal.

[0003] When testing water samples with a UV-Vis spectrophotometer, the process typically involves first adjusting the spectrophotometer, then opening the cover to insert the sample-filled test tube, closing the cover, and finally conducting the test. When there are many water samples to be tested, staff need to frequently open and close the cover and remove / insert samples, which slows down their work. Frequent manual sample changes also increase the risk of errors, severely impacting testing efficiency. Summary of the Invention

[0004] The main objective of this invention is to provide a UV-Vis spectrophotometer with rapid sample loading and unloading, aiming to solve the problem that manual water sample replacement seriously affects detection efficiency.

[0005] To achieve the above objectives, the technical solution proposed by this invention is as follows: A rapid sample inlet / outlet UV-Vis spectrophotometer includes a controller, a main body, an electrically controlled cover, a sample holder, and a transfer mechanism. The main body has a detection space, and a sample inlet is located on its top side. The electrically controlled cover is positioned at the sample inlet and is used to open and close it. The sample holder and the transfer mechanism are both located on the side of the main body where the sample inlet is located. The sample holder is situated on one side of the sample inlet and is divided into a test area and a tested area. The test area accommodates several sample tubes to be tested, and the tested area accommodates several tested sample tubes. The transfer mechanism is located on the side of the sample inlet away from the detection space. The transfer mechanism and the sample inlet are spaced apart. The controller is electrically connected to the main body of the device, the electrically controlled cover, and the transfer mechanism. The controller controls the opening of the electrically controlled cover and then controls the transfer mechanism to drive one of the sample tubes to be tested in the testing area to enter the testing space through the sample inlet. When the sample tube to be tested is in the testing space, the controller controls the closing of the electrically controlled cover and then controls the main body of the device to test the sample tube. When the test of the sample tube is completed, the controller controls the opening of the electrically controlled cover and then controls the transfer mechanism to grab the tested sample tube in the testing space and send it into the tested area through the sample inlet.

[0006] Preferably, the transfer mechanism includes a top frame, a slide rail, an electrically controlled slide block, and a gripper arm. The top frame is detachably disposed on the side of the sample inlet away from the detection space, and the top frame and the sample inlet are spaced apart. The slide rail is disposed on the side of the top frame facing the sample inlet and extends along the sample holder in a direction away from the sample holder. The electrically controlled slide block is slidably connected to the slide rail, and the electrically controlled slide block is driven to connect to the gripper arm through a connecting mechanism. The controller is electrically connected to the electrically controlled slide block, the connecting mechanism, and the gripper arm respectively, and the controller is used to control the electrically controlled slide block and the connecting mechanism to drive the gripper arm to move in the horizontal direction so that the gripper arm can grasp and release the test tube.

[0007] Preferably, the connecting mechanism includes a mounting plate, an electrically controlled telescopic device, and a connecting seat. The mounting plate is disposed on the side of the electrically controlled slide away from the slide rail, and the electrically controlled telescopic device is disposed on the side of the mounting plate away from the electrically controlled slide. The output end of the electrically controlled telescopic device faces the sample frame. The gripping arm is located at the end of the electrically controlled telescopic device close to the sample frame, and the output end of the electrically controlled telescopic device is driven to connect to the gripping arm through the connecting seat. The controller is electrically connected to the electrically controlled telescopic device and is used to control the electrically controlled telescopic device and the electrically controlled slide respectively, and drive the gripping arm to move horizontally through the connecting seat.

[0008] Preferably, the gripper arm includes a fixed base, a dual-slide linear motor, an electrically controlled lifting device, and two clamping blocks. The electrically controlled lifting device is located on the side of the connecting base away from the electrically controlled telescopic device. The output end of the electrically controlled telescopic device is driven and connected to the electrically controlled lifting device through the mounting base. The output end of the electrically controlled lifting device faces the main body of the equipment. The output end of the electrically controlled lifting device is driven and connected to the fixed base. The dual-slide linear motor is located on the side of the fixed base near the sample frame. Between the sample frame and the dual-slide linear motor, one of the dual-slide linear motors... The output end of the motor drives and connects to one of the clamping blocks, and the other output end of the dual-slide linear motor drives and connects to the other clamping block. A clamping space is formed between the two clamping blocks, which is used to accommodate the sample bottle. The controller is electrically connected to the dual-slide linear motor and the electric lifter. The controller is used to control the dual-slide linear motor to drive the two clamping blocks to clamp and fix the sample bottle to be moved in the clamping space. The controller is also used to control the electric lifter to move the sample bottle vertically when the two clamping blocks clamp and fix the sample bottle to be moved.

[0009] Preferably, the clamping block has a receiving groove on the side facing the clamping space, and the groove wall has a flexible layer.

[0010] Preferably, the electrically controlled cover includes two electrically controlled telescopic rods and a cover plate. The cover plate and the two electrically controlled telescopic rods are both disposed on the side of the main body of the device where the sample inlet is opened. The two electrically controlled telescopic rods are driven and connected to the cover plate, and are used to drive the cover plate to move horizontally. The controller is electrically connected to the two electrically controlled telescopic rods, and is used to control the two electrically controlled telescopic rods to drive the cover plate to open and close the sample inlet.

[0011] Preferably, the main body of the device has an installation groove located on the side of the sample inlet away from the sample frame. The side wall of the installation groove near the sample frame is connected to the sample inlet. The cover plate and the two electrically controlled telescopic rods are both located in the installation groove. The two electrically controlled telescopic rods extend along the installation groove towards the sample inlet and are arranged in parallel and spaced apart. The cover plate is located between the two electrically controlled telescopic rods. The controller controls the two electrically controlled telescopic rods to drive the cover plate through the side of the installation groove near the sample frame into the sample inlet, thereby closing the sample inlet.

[0012] Preferably, the sample holder includes a base plate, a connecting plate, and a perforated plate. The connecting plate and the perforated plate are spaced apart. The connecting plate is located on the bottom side of the perforated plate. The perforated plate has several through holes along its thickness for inserting sample bottles, so that the connecting plate supports the sample bottles inserted into the through holes. The connecting plate is located on the base plate and the perforated plate facing the main body of the equipment. The connecting plate connects the base plate and the perforated plate respectively, and the connecting plate is detachably connected to the main body of the equipment.

[0013] Preferably, the sample holder is further provided with a partition, which is disposed on the side of the perforated plate opposite to the connecting plate. The partition divides each of the receiving through holes of the perforated plate into two parts, one part of the receiving through holes forming the area to be tested, and the other part of the receiving through holes forming the area that has been tested.

[0014] Compared with the prior art, the present invention has at least the following beneficial effects: Staff only need to put the water sample to be tested into the sample bottle and then insert the sample bottle into the testing area of ​​the sample rack. The sample bottle to be tested is sent into the testing space in sequence by the transfer mechanism and the electric control cover. After the test is completed, the tested sample bottle is sent back to the tested area. The entire testing process does not require frequent manual operation by staff, which greatly improves the testing efficiency and avoids human error. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of a structure of an embodiment of the UV-Vis spectrophotometer with rapid sample loading and unloading according to the present invention. Figure 2 This is a schematic diagram of a part of the gripper arm structure; Figure 3 This is a schematic diagram of the internal structure of the main body of the equipment.

[0017] Explanation of icon numbers: 1-Main body of the equipment; 11-Detection space; 12-Sample inlet; 13-Mounting slot; 2-Material transfer mechanism; 21-Top frame; 22-Slide rail; 23-Electrically controlled slide block; 24-Mounting plate; 25-Electrically controlled expansion joint; 26-Connecting seat; 3-Electrically controlled cover; 31-Electrically controlled telescopic rod; 32-Cover plate; 4-Sample rack; 41-Base plate; 42-Connecting plate; 43-Perforated plate; 44-Partition plate; 5-Grab arm; 51-Double slide linear motor; 52-Electrically controlled lifting device; 53-Clamping block; 6-Fixed base; 61-First connecting frame; 62-Second connecting frame; 63-Cylinder body; 64-Insertion post; 65-Pressure sensor; 66-Spring; 67-Camera; The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0018] 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 a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0019] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0020] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0021] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0022] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0023] This invention proposes a UV-Vis spectrophotometer with rapid sample loading and unloading.

[0024] like Figures 1 to 3 The UV-Vis spectrophotometer shown includes a controller, a main body 1, an electrical control cover 3, a sample holder 4, and a transfer mechanism 2. The main body 1 has a detection space 11, and a sample inlet 12 is located on the top side of the main body 1. The electrical control cover 3 is positioned at the sample inlet 12 and is used to open and close the sample inlet 12. The sample holder 4 and the transfer mechanism 2 are both located on the side of the main body 1 where the sample inlet 12 is located. The sample holder 4 is situated on one side of the sample inlet 12 and has a test area and a tested area. The test area is used to accommodate several sample tubes to be tested, and the tested area is used to accommodate several tested sample tubes. The transfer mechanism 2 is located away from the test area of ​​the sample inlet 12. On one side of space 11, transfer mechanism 2 and sample inlet 12 are spaced apart; controller is electrically connected to the main body 1, control cover 3 and transfer mechanism 2 respectively. The controller is used to control the control cover 3 to open, and then control transfer mechanism 2 to drive one of the sample tubes to be tested in the test area to enter the test space 11 through sample inlet 12; when the sample tube to be tested is in the test space 11, the controller is used to control the control cover 3 to close, and then control the main body 1 to test the sample tube to be tested; when the sample tube to be tested is tested, the controller is used to control the control cover 3 to open, and then control transfer mechanism 2 to grab the tested sample tube in the test space 11 and send it into the tested area through sample inlet 12.

[0025] Staff only need to put the water sample to be tested into the sample bottle and then insert the sample bottle into the testing area of ​​the sample rack 4. The sample bottle to be tested is sent into the testing space 11 for testing in sequence through the transfer mechanism 2 and the electric control cover 3. After the testing is completed, the tested sample bottle is sent back to the tested area. The entire testing process does not require frequent manual operation by staff, which greatly improves the testing efficiency and avoids human error.

[0026] The material transfer mechanism 2 includes a top frame 21, a slide rail 22, an electrically controlled slide block 23, and a gripper arm 5. The top frame 21 is detachably installed on the side of the sample inlet 12 away from the detection space 11. The top frame 21 and the sample inlet 12 are spaced apart. The slide rail 22 is installed on the side of the top frame 21 facing the sample inlet 12 and extends along the sample holder 4 in a direction away from the sample holder 4. The electrically controlled slide block 23 is slidably connected to the slide rail 22 and is driven to connect to the gripper arm 5 through a connecting mechanism. The controller is electrically connected to the electrically controlled slide block 23, the connecting mechanism, and the gripper arm 5 respectively. The controller is used to control the electrically controlled slide block 23 and the connecting mechanism to drive the gripper arm 5 to move in the horizontal direction so that the gripper arm 5 can grasp and release the test tube.

[0027] Specifically, the top frame 21 and the main body of the equipment 1 are fixed by bolts, which makes it convenient to remove the material transfer mechanism from the sample inlet 12 when performing maintenance in the testing space 11.

[0028] The connecting mechanism includes a mounting plate 24, an electrically controlled telescopic device 25, and a connecting seat 26. The mounting plate 24 is located on the side of the electrically controlled slide 23 away from the slide rail 22. The electrically controlled telescopic device 25 is located on the side of the mounting plate 24 away from the electrically controlled slide 23. The output end of the electrically controlled telescopic device 25 faces the sample frame 4. The gripping arm 5 is located at the end of the electrically controlled telescopic device 25 close to the sample frame 4. The output end of the electrically controlled telescopic device 25 is connected to the gripping arm 5 via the connecting seat 26. The controller is electrically connected to the electrically controlled telescopic device 25 and is used to control the electrically controlled telescopic device 25 and the electrically controlled slide 23 respectively, and drive the gripping arm 5 to move horizontally via the connecting seat 26. The cooperation of the slide rail 22 and the electrically controlled slide block 23 adjusts the longitudinal movement of the gripper arm 5, and the electrically controlled telescopic device 25 adjusts the lateral movement of the gripper arm 5, so as to realize the arbitrary movement of the gripper arm 5 in the horizontal direction, thereby ensuring that the gripper arm 5 grabs the sample bottle in the undetected area and sends the sample bottle into the detection space 11, and ensuring that the gripper arm 5 sends the sample bottle from the area in the detection space 11 and sends the detected sample bottle into the detected area.

[0029] The grab arm 5 includes a fixed base 6, a double-slide linear motor 51, an electric lifting device 52, and two clamping blocks 53. The electric lifting device 52 is located on the side of the connecting base 26 away from the electric telescopic device 25. The output end of the electric telescopic device 25 is driven and connected to the electric lifting device 52 through the mounting base 26. The output end of the electric lifting device 52 faces the main body 1 of the equipment. The output end of the electric lifting device 52 is driven and connected to the fixed base 6. The double-slide linear motor 51 is located on the side of the fixed base 6 near the sample frame 4. Between the sample frame 4 and the double-slide linear motor 51, the double-slide linear motor 51... One output terminal of the dual-slide linear motor 51 drives and connects to one clamping block 53, and the other output terminal of the dual-slide linear motor 51 drives and connects to the other clamping block 53. A clamping space is formed between the two clamping blocks 53 to accommodate the sample bottle. The controller is electrically connected to the dual-slide linear motor 51 and the electric lifter 52. The controller is used to control the dual-slide linear motor 51 to drive the two clamping blocks 53 to clamp and fix the sample bottle to be moved in the clamping space. The controller is also used to control the electric lifter 52 to move the sample bottle vertically when the two clamping blocks 53 are clamping and fixing the sample bottle to be moved. The electric lifter 52 adjusts the horizontal height of the two clamping blocks 53 to realize the sample bottle entering and exiting the detection space 11. The dual-slide linear motor 51 drives the two clamping blocks 53 to move closer to adjust the size of the clamping space to ensure that the two clamping blocks 53 firmly fix the sample bottle.

[0030] Specifically, the mounting base 6 includes a first connecting frame 61, a second connecting frame 62, a cylindrical body 63, a plug 64, and a pressure sensor 65. The cylindrical body 63 is vertically arranged, and its top end is connected to the output end of the electric lifting device 52 via the first connecting frame 61. A plug hole 67 is vertically opened at the end of the cylindrical body 63 away from the electric lifting device 52, and the pressure sensor 65 is installed at the bottom of the plug hole 67. The plug 64 is vertically arranged, and its top end is inserted into the plug hole and connected to the pressure sensor 65 via a spring spring 66. The bottom end of the plug 64 is connected to the second connecting frame. A dual-slide linear motor 51 is connected to a controller; the controller is electrically connected to a pressure sensor 65. The controller acquires the first real-time pressure data from the pressure sensor 65. When the electric lifter 52 drives the sample bottle into the detection space 11, it determines whether the first real-time pressure data is within a preset range. When the first real-time pressure data is always within the preset range, the electric lifter 52 correctly inserts the sample bottle into the detection space 11. When the first real-time pressure data is outside the preset range, the controller sends an alarm message and controls the electric lifter 52 to raise the sample bottle. The entire process of inserting the sample bottle into the detection space 11 only slightly pushes the insertion post 64. The change in the first real-time pressure data during the entire insertion process will not exceed the preset range. Only when the sample bottle is not correctly inserted into the slot in the detection space 11 will the insertion post 64 move excessively towards the pressure sensor 65. At this time, the first real-time pressure data exceeds the preset range, an alarm is triggered, and the incorrectly inserted sample bottle is raised.

[0031] Specifically, a camera 67 is installed on the side of the second connecting frame 62 away from the insertion post 64. The camera 67 is electrically connected to the controller. The camera 67 acquires a top-view image of the detection space and sends it to the controller. The controller is used to acquire selection information and preset coordinates based on the top-view image, and to determine the test area based on the selection information and preset coordinates. The controller is used to acquire a preset interval, and to determine several test points based on the test area and preset interval. It controls the transfer mechanism and the gripper arm to grab the test sample bottles so that the test sample bottles enter the test points in sequence and acquire the second real-time pressure data. It determines whether each second real-time pressure data is within a preset interval. When any second pressure data is within the preset interval, the test point corresponding to the second pressure data within the preset interval is determined as a detection point. When any second pressure data is outside the preset interval, the test point corresponding to the second pressure data outside the preset interval is determined as an error point.

[0032] The selected information is the manually determined area location on the top-view image; the preset coordinates are the coordinate system established based on the top-view image. The preset coordinates are set according to the fixed position of the camera 57, so the coordinate area (i.e., the area location) of the selected information can be determined according to the preset coordinates; the preset interval is the manually set interval information, that is, the initial test point is determined by the center position of the coordinate area, and then the next test point is determined sequentially with an interval of 0.1 mm (i.e., the preset interval).

[0033] The clamping block 53 has a receiving groove on the side facing the clamping space, and the groove wall is provided with a flexible layer.

[0034] The electrically controlled cover 3 includes two electrically controlled telescopic rods 31 and a cover plate 32. Both the cover plate 32 and the two electrically controlled telescopic rods 31 are located on the side of the main body 1 where the sample inlet 12 is located. The two telescopic rods 31 are connected to the cover plate 32 and are used to drive the cover plate 32 to move horizontally. A controller is electrically connected to the two telescopic rods 31 and is used to control the two telescopic rods 31 to drive the cover plate 32 to open and close the sample inlet 12. The telescopic rods 31 drive the cover plate 32 to open and close the sample inlet 12, ensuring that the cover plate 32 opens the sample inlet 12 when the gripper arm 5 enters it. Simultaneously, when the gripper arm 5 is outside the detection space 11, the cover plate 32 closes the sample inlet 12, ensuring that the detection space 11 is closed during detection.

[0035] The main body of the equipment 1 has an installation groove 13, which is located on the side of the sample inlet 12 away from the sample holder 4. The side wall of the installation groove 13 near the sample holder 4 is connected to the sample inlet 12. The cover plate 32 and the two electrically controlled telescopic rods 31 are both located in the installation groove 13. The two electrically controlled telescopic rods 31 extend along the installation groove 13 toward the sample inlet 12 and are arranged in parallel at intervals. The cover plate 32 is located between the two electrically controlled telescopic rods 31. The controller controls the two electrically controlled telescopic rods 31 to drive the cover plate 32 through the side of the installation groove 13 near the sample holder 4 into the sample inlet 12, thus closing the sample inlet 12.

[0036] A sealing layer is provided at the opening of the mounting slot 13.

[0037] The sample holder 4 includes a base plate 41, a connecting plate 42, and a perforated plate 43. The connecting plate 42 and the perforated plate 43 are spaced apart. The connecting plate 42 is located on the bottom side of the perforated plate 43. The perforated plate 43 has several through holes along its thickness for inserting sample bottles, so that the connecting plate 42 can support the sample bottles inserted into the through holes. The connecting plate 42 is located on the base plate 41 and the perforated plate 43 facing the main body 1. The connecting plate 42 is connected to the base plate 41 and the perforated plate 43 respectively. The connecting plate 42 is detachably connected to the main body 1.

[0038] The sample holder 4 is also provided with a partition 44, which is located on the side of the perforated plate 43 away from the connecting plate 42. The partition 44 divides each of the through holes of the perforated plate 43 into two parts, one part of which contains through holes to form the area to be tested, and the other part of which contains through holes to form the area that has been tested.

[0039] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A UV-Vis spectrophotometer with quick sample loading and unloading, characterized in that, The device includes a controller, a main body, an electrical control cover, a sample holder, and a transfer mechanism. The main body has a detection space, and a sample inlet is located on its top side. The electrical control cover is positioned at the sample inlet and is used to open and close the inlet. The sample holder and the transfer mechanism are both located on the side of the main body where the sample inlet is located. The sample holder is situated on one side of the sample inlet and is divided into a test area and a tested area. The test area accommodates several sample tubes to be tested, and the tested area accommodates several tested sample tubes. The transfer mechanism is located on the side of the sample inlet away from the detection space, and the transfer mechanism and the sample inlet are spaced apart. The controller is electrically connected to the main body of the device, the electrically controlled cover, and the transfer mechanism. The controller controls the opening of the electrically controlled cover and then controls the transfer mechanism to drive one of the sample tubes to be tested in the testing area into the testing space through the sample inlet. When the sample tube to be tested is in the testing space, the controller controls the closing of the electrically controlled cover and then controls the main body of the device to test the sample tube. When the testing of the sample tube is completed, the controller controls the opening of the electrically controlled cover and then controls the transfer mechanism to grab the tested sample tube in the testing space and send it into the tested area through the sample inlet.

2. The UV-Vis spectrophotometer of claim 1, wherein, The material transfer mechanism includes a top frame, a slide rail, an electrically controlled slide block, and a gripper arm. The top frame is detachably mounted on the side of the sample inlet away from the detection space, and the top frame and the sample inlet are spaced apart. The slide rail is mounted on the side of the top frame facing the sample inlet and extends along the sample holder in a direction away from the sample holder. The electrically controlled slide block is slidably connected to the slide rail and is driven to connect to the gripper arm through a connecting mechanism. The controller is electrically connected to the electrically controlled slide block, the connecting mechanism, and the gripper arm, and is used to control the electrically controlled slide block and the connecting mechanism to drive the gripper arm to move horizontally so that the gripper arm can grasp and release the test tube.

3. The UV-Vis spectrophotometer of claim 2, wherein, The connecting mechanism includes a mounting plate, an electrically controlled telescopic device, and a connecting seat. The mounting plate is located on the side of the electrically controlled slide away from the slide rail, and the electrically controlled telescopic device is located on the side of the mounting plate away from the electrically controlled slide. The output end of the electrically controlled telescopic device faces the sample frame. The gripping arm is located at the end of the electrically controlled telescopic device close to the sample frame, and the output end of the electrically controlled telescopic device is driven to connect to the gripping arm through the connecting seat. The controller is electrically connected to the electrically controlled telescopic device and is used to control the electrically controlled telescopic device and the electrically controlled slide respectively, and drive the gripping arm to move horizontally through the connecting seat.

4. The UV-Vis spectrophotometer of claim 3, wherein, The gripper arm includes a fixed base, a dual-slide linear motor, an electrically controlled lifting device, and two clamping blocks. The electrically controlled lifting device is located on the side of the connecting base away from the electrically controlled telescopic device. The output end of the electrically controlled telescopic device is driven and connected to the electrically controlled lifting device through the mounting base. The output end of the electrically controlled lifting device faces the main body of the equipment. The output end of the electrically controlled lifting device is driven and connected to the fixed base. The dual-slide linear motor is located on the side of the fixed base near the sample frame. Between the sample frame and the dual-slide linear motor, one of the outputs of the dual-slide linear motor... One of the clamping blocks is driven by an end drive, and the other output end of the dual-slide linear motor is driven by another clamping block, forming a clamping space between the two clamping blocks. The clamping space is used to accommodate the sample bottle. The controller is electrically connected to the dual-slide linear motor and the electric lifter. The controller is used to control the dual-slide linear motor to drive the two clamping blocks to clamp and fix the sample bottle to be moved in the clamping space. The controller is also used to control the electric lifter to move the sample bottle vertically when the two clamping blocks clamp and fix the sample bottle to be moved.

5. The UV-Vis spectrophotometer of claim 4, wherein, The clamping block has a receiving groove on the side facing the clamping space, and the groove wall is provided with a flexible layer.

6. The UV-VIS spectrophotometer of any one of claims 2-5, wherein, The electrically controlled cover includes two electrically controlled telescopic rods and a cover plate. The cover plate and the two electrically controlled telescopic rods are both located on the side of the main body of the device where the sample inlet is located. The two electrically controlled telescopic rods are driven and connected to the cover plate, and are used to drive the cover plate to move horizontally. The controller is electrically connected to the two electrically controlled telescopic rods, and is used to control the two electrically controlled telescopic rods to drive the cover plate to open and close the sample inlet.

7. The UV-Vis spectrophotometer of claim 6, wherein, The main body of the device has an installation groove located on the side of the sample inlet away from the sample frame. The side wall of the installation groove near the sample frame is connected to the sample inlet. The cover plate and the two electrically controlled telescopic rods are both located in the installation groove. The two electrically controlled telescopic rods extend along the installation groove toward the sample inlet and are arranged in parallel and spaced apart. The cover plate is located between the two electrically controlled telescopic rods. The controller controls the two electrically controlled telescopic rods to drive the cover plate through the side of the installation groove near the sample frame into the sample inlet, thereby closing the sample inlet.

8. The UV-VIS spectrophotometer of any one of claims 2-5, wherein, The sample holder includes a base plate, a connecting plate, and a perforated plate. The connecting plate and the perforated plate are spaced apart. The connecting plate is located on the bottom side of the perforated plate. The perforated plate has several through holes along its thickness for inserting sample bottles, so that the connecting plate supports the sample bottles inserted into the through holes. The connecting plate is located on the base plate and the perforated plate facing the main body of the equipment. The connecting plate connects the base plate and the perforated plate respectively, and the connecting plate is detachably connected to the main body of the equipment.

9. A rapid sample entry and exit ultraviolet-visible spectrophotometer according to claim 8, characterized in that, The sample holder is also provided with a partition, which is located on the side of the perforated plate opposite to the connecting plate. The partition divides each of the receiving through holes of the perforated plate into two parts, one part of the receiving through holes forming the area to be tested, and the other part of the receiving through holes forming the area that has been tested.

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