Spectrophotometer and gas detection method

Abstract

The invention discloses a spectrophotometer and a gas detection method, and relates to the technical field of spectrophotometers, the spectrophotometer comprises a spectrophotometer body, a detection chamber and a detector, a detection mechanism is arranged in the spectrophotometer body, and an auxiliary mechanism is arranged on the spectrophotometer body. The first overturning frame and the second overturning frame are overturned upwards to be closed, the inserting block is inserted into the inserting groove to enable the wedge-shaped clamping block to be extruded and retracted, and when the inserting block is completely inserted into the inserting groove, the wedge-shaped clamping block is automatically clamped with the clamping groove under the rebound effect of a third spring; the first overturning frame and the second overturning frame are locked and fixed when being closed, then a limiting rod is pulled downwards along a limiting groove to enable dustproof cloth to stretch downwards, closed dust prevention is conducted on the operation portion of the spectrophotometer in cooperation with a dustproof cover plate, and meanwhile a user can lift and carry the spectrophotometer through a handle groove. And the portability and the practicability of the spectrophotometer are improved.

Description

Technical Field

[0001] The invention relates to the technical field of spectrophotometers, in particular to a spectrophotometer and a gas detection method. Background Art

[0002] As people pay more attention to the environment, the detection of harmful gas content in the air is becoming more and more common. Generally, gas detectors are used to detect the composition and content of sampled gas. Commonly used gas detectors are spectrophotometers. Spectrophotometers are devices used to measure absorption spectra. Among spectrophotometers, there are visible ultraviolet spectrophotometers for measuring spectra from near-infrared to visible and ultraviolet, and infrared spectrophotometers for measuring spectra in the infrared part.

[0003] The Chinese patent proposes a spectrophotometer, the publication number of which is CN214844784U, comprising a photometer body, a receiving groove is provided on one side of the photometer body, a dust cover cloth is stored in the receiving groove, and the dust cover cloth can be unfolded and covered on the photometer body. A roller is rotatably provided in the receiving groove, one end of the dust cover cloth is fixedly connected to the roller, and the dust cover cloth can be wound onto the roller.

[0004] The above scheme makes the spectrophotometer dustproof by providing a dust cover cloth, but the spectrophotometer needs to be moved manually when it needs to be moved to other locations for use. Since the spectrophotometer is covered by the dust cover cloth, in order not to affect the dustproofness of the spectrophotometer, the spectrophotometer as a whole can only be moved manually, which is laborious and the dust cover cloth is prone to slipping, which affects the dustproofness and greatly reduces the portability of the spectrophotometer.

[0005] Therefore, the design is highly practical and by flipping the first flip frame and the second flip frame upward and closing, the plug block is inserted into the slot, and the wedge-shaped card block is squeezed and retracted into the active cavity. When the plug block is fully inserted into the slot, the wedge-shaped card block automatically engages with the card slot on the plug block under the rebound action of the third spring, thereby realizing the locking and fixing of the first flip frame and the second flip frame when closed. Then, the limit rods on the first flip frame and the second flip frame are pulled downward along the limit slot to extend the dustproof cloth downward, and the operating part of the spectrophotometer is closed and dust-proofed in cooperation with the dustproof cover plate, so as to prevent the operating part of the spectrophotometer from being attached with dust and affecting its use when not in use. At the same time, the user can lift and carry the spectrophotometer through the handle slots on the first flip frame and the second flip frame, thereby greatly improving the portability and practicality of the spectrophotometer. A spectrophotometer and a gas detection method are very necessary. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a spectrophotometer and a gas detection method.

[0007] To achieve the above object, the present invention provides the following technical solutions: A spectrophotometer comprises a spectrophotometer, the spectrophotometer comprises a photometer body, a detection chamber and a detector, a detection mechanism is arranged in the photometer body, and an auxiliary mechanism is arranged on the photometer body; the detection mechanism comprises a sample box arranged in the detection chamber, a plurality of placement slots are provided on the sample box, a cuvette is placed in the placement slots, a plurality of detection holes corresponding to the plurality of placement slots are provided on both sides of the sample box, a shell fixedly arranged on the sample box is arranged below the plurality of detection holes, a second spring is fixedly arranged in the shell, a slide plate slidably connected to the inside of the shell is fixedly arranged at the bottom of the second spring, a connecting frame is fixedly arranged at the bottom of the slide plate, the bottom of the connecting frame slides through the shell and is rotatably connected to a roller, and an arc adapted to the roller is provided in the detection chamber. shaped positioning groove, the arc-shaped positioning groove and the detector are on the same vertical line; a clamping assembly for positioning the cuvette is arranged in the placement groove; the auxiliary mechanism comprises a first flip frame and a second flip frame, both ends of the photometer body are rotatably provided with rotating shafts, the first flip frame and the second flip frame are respectively fixedly connected to the corresponding rotating shafts, a handle groove is provided on the first flip frame and the second flip frame, a dust cover is fixedly provided on the first flip frame and the second flip frame, a dust cloth is fixedly provided on the bottom of the dust cover, a limit rod is fixedly provided on the bottom of the dust cloth, and a limit groove slidably connected to the limit rod is provided on the inner side of the first flip frame and the second flip frame; a locking assembly is provided between the first flip frame and the second flip frame, and a supporting assembly is provided on the first flip frame and the second flip frame.

[0008] According to the above technical solution, a sliding seat is fixedly provided at the bottom of the sample box, a sliding groove slidably connected to the sliding seat is opened in the detection chamber, a pull-out rod is fixedly provided at one end of the sample box, the handle end of the pull-out rod slides through the detection chamber and extends to the outer end of the photometer body, a conduit is connected to the cuvette, and a sealing cover is threadedly connected to the conduit.

[0009] According to the above technical solution, the clamping assembly in the placement groove includes a movable groove opened in the placement groove, a sliding rod is fixedly arranged in the movable groove, a limit sleeve is fixedly arranged on the middle part of the sliding rod, both ends of the sliding rod are slidably connected with a sliding plate, a U-shaped positioning block adapted to the cuvette is fixedly arranged on the sliding plate, and both ends of the sliding rod are sleeved with a first spring fixedly arranged between the movable groove and the sliding plate.

[0010] According to the above technical solution, the locking assembly includes an insert block fixedly set on the first flip frame, a card slot is provided on the insert block, a slot connected to the insert block is provided on the second flip frame, an active cavity is provided in the second flip frame, a slider is slidably connected in the active cavity, and a wedge-shaped card block is fixedly provided on one side of the slider.

[0011] According to the above technical solution, one end of the wedge-shaped block close to the slot slides through the active cavity, extends into the slot and is engaged with the slot on the insert block. A guide rod is fixedly provided on the other side of the slider, and a third spring is sleeved on the guide rod and fixedly provided between the active cavity and the slider. The end of the guide rod away from the slider slides through the active cavity and is fixedly connected with a pull ring.

[0012] According to the above technical solution, the support assembly includes a fixed box fixedly set on the first flip frame and the second flip frame, a bidirectional screw is rotatably set in the fixed box, one end of the bidirectional screw rotatably passes through the fixed box and is fixedly connected to a rotating block, and both ends of the bidirectional screw are threadedly connected to a moving block that is slidably connected to the fixed box.

[0013] According to the above technical solution, limiting sliders are fixedly provided on both sides of the moving block, a limiting sliding groove slidably connected to the limiting slider is opened in the fixed box, a connecting block is fixedly provided on the moving block, a support plate is provided above the fixed box, a mounting block is fixedly provided on the bottom of the support plate, a hinged rod is hingedly provided between the connecting block and the mounting block, and a rubber pad is fixedly provided on the support plate.

[0014] According to the above technical solution, a control panel and a wavelength adjustment knob are provided on the photometer body, and a cover plate is hingedly provided on the detection chamber.

[0015] Based on the spectrophotometer described above, the present invention further proposes a gas detection method using a spectrophotometer, comprising the following steps: Step 1: After folding the dustproof cloth, flip the first flip frame and the second flip frame to the bottom of the photometer body and firmly support them with the support assembly, adjust the photometer body to a suitable height by adjusting the support assembly, connect the power of the spectrophotometer and turn on the power switch of the photometer body to preheat it to a stable working state; Step 2: Introduce a plurality of gases to be tested into a plurality of cuvettes through the conduit, and then seal the cuvettes with a sealing cover, and then open the cover to place the plurality of cuvettes into a plurality of placement slots in the sample box, and clamp the cuvettes with the clamping components in the placement slots; Step 3: Select the wavelength corresponding to the absorption peak of the gas to be tested by adjusting the wavelength knob, and record the reference light intensity when there is no gas. Pull the pull rod to move the cuvette to be tested to the position of the detector. The detector emits light waves to detect the gas in the cuvette. The photometer body calculates the gas concentration through the ratio of the reference light intensity and the light intensity transmitted through the gas, and transmits the detection data to the display screen of the control panel. Step 4: After the test is completed, open the cover plate to take out multiple cuvettes from the sample box, and finally open the sealing cover to allow the tested gas to be discharged into the collection container through the conduit.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention, by flipping the first flip frame and the second flip frame upward and closing, the insert block is inserted into the slot, the wedge-shaped card block is squeezed and retracted into the active cavity, and when the insert block is fully inserted into the slot, the wedge-shaped card block is automatically engaged with the card slot on the insert block under the rebound action of the third spring, so that the first flip frame and the second flip frame are locked and fixed when they are closed, and then the limiting rods on the first flip frame and the second flip frame are pulled downward along the limiting slot to extend the dustproof cloth downward, and the operating part of the spectrophotometer is closed and dustproofed in cooperation with the dustproof cover plate, so that the operating part of the spectrophotometer is prevented from being attached with dust and affecting the use when not in use, and at the same time, the user can carry the spectrophotometer by the handle slots on the first flip frame and the second flip frame, which greatly improves the portability and practicality of the spectrophotometer.

[0017] 2. The present invention pulls the two pull rings outward to make the guide rod drive the slider to drive the wedge-shaped card block to retract into the movable cavity and release the card connection with the slot on the plug block, then pushes the limit rod upward to fold and store the dustproof cloth, then turns the first flip frame and the second flip frame downward by 180 degrees, and the spectrophotometer is supported by the support plate in the support assembly, and the two moving blocks threadedly connected to the two ends of the bidirectional screw rod are moved toward each other by rotating the rotating block. When the spacing between the two moving blocks becomes smaller, the hinged rod can push the support plate to move, so that the height of the spectrophotometer can be adjusted. The rubber pad arranged on the support plate can play an anti-skid role, so that the spectrophotometer can be firmly placed on platforms of different flatnesses when in use, and the spectrophotometer can be adjusted to a suitable operating height according to the height of different operators, thereby improving the functionality and practicality of the spectrophotometer.

[0018] 3. In the present invention, the cover plate is opened to place a plurality of cuvettes slightly tilted into a plurality of placement slots in the sample box, and the cuvettes are lightly pressed so that the two U-shaped positioning blocks are squeezed to drive the two sliding plates to expand toward both ends along the surface of the slide rod. After the cuvettes are completely and properly placed into the U-shaped positioning blocks, the two U-shaped positioning blocks are reset under the rebound action of the first spring, thereby clamping and positioning the cuvettes, and preventing the cuvettes from tipping over or shaking during detection, which may affect the accuracy of gas detection.

[0019] 4. The present invention moves the sample box by pulling the pull-out rod, so that the sliding seat at the bottom of the sample box slides along the slide groove. Multiple detection holes corresponding to the multiple placement grooves are opened on both sides of the sample box. A roller that is rollingly connected to the inner wall of the detection chamber is provided under each detection hole. When the cuvette at the outermost end moves to the position of the detector, the roller there is embedded in the arc-shaped positioning groove under the elastic action of the second spring, so that the cuvette at this position can be firmly positioned with the detector, and the light waves emitted by the detector can accurately pass through the detection hole to detect the gas in the cuvette, thereby effectively improving the accuracy of the gas detection data. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0021] In the attached picture: Figure 1 is a three-dimensional structural schematic diagram of a spectrophotometer and a gas detection method in an embodiment of the present invention; Figure 2 is a schematic diagram of the three-dimensional structure of the protection mechanism in an embodiment of the present invention; Figure 3 is a schematic diagram of the three-dimensional structure of a photometer body in an embodiment of the present invention; Figure 4 is a schematic cross-sectional structural diagram of a photometer body in an embodiment of the present invention; Figure 5 In the embodiment of the present invention Figure 4 A magnified view of the structure at center A; Figure 6 is a schematic cross-sectional structural diagram of a sample box in an embodiment of the present invention; Figure 7 is a schematic diagram of the three-dimensional structure of the first overturn frame in an embodiment of the present invention; Figure 8 is a schematic cross-sectional structural diagram of a second overturning frame in an embodiment of the present invention; Fig. 9 is a schematic diagram of the three-dimensional structure of a dustproof cloth in an embodiment of the present invention; Fig.10It is a schematic diagram of the three-dimensional structure of the support assembly in an embodiment of the present invention.

[0022] In the figure: 1. spectrophotometer; 101. photometer body; 102. control panel; 103. wavelength knob; 104. detection chamber; 105. cover plate; 106. detector; 2. detection mechanism; 201. sample box; 202. sliding seat; 203. slide groove; 204. pull-out rod; 205. detection hole; 206. placement groove; 207. cuvette; 208. catheter; 209. sealing cover; 210. movable groove; 211. slide rod; 212. limit sleeve; 213. slide plate; 214. U-shaped positioning block; 215. first spring; 216. housing; 217. slide plate; 218. second spring; 219. connecting frame; 220. roller; 221. arc positioning groove; 3. auxiliary mechanism; 301. first flip frame; 302. 2. Second flip frame; 303. Rotating axis; 304. Handle slot; 305. Dust cover; 306. Dust cloth; 307. Limit rod; 308. Limit slot; 309. Lock assembly; 3091. Insert block; 3092. Slot; 3093. Slot; 3094. Active cavity; 3095. Slider; 3096. Wedge block; 3097. Guide rod; 3098. Third spring; 3099. Pull ring; 310. Support assembly; 3101. Fixed box; 3102. Bidirectional screw rod; 3103. Rotating block; 3104. Moving block; 3105. Limit slider; 3106. Limit slide slot; 3107. Connecting block; 3108. Support plate; 3109. Rubber pad; 31010. Mounting block; 31011. Articulated rod. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0025] Embodiment 1 Combination Figure 1-Figure 10The present invention provides a technical solution: a spectrophotometer, including a spectrophotometer 1, the spectrophotometer 1 includes a photometer body 101, a detection chamber 104 and a detector 106, a control panel 102 and a wavelength adjustment knob 103 are provided on the photometer body 101, a cover plate 105 is hingedly provided on the detection chamber 104, a detection mechanism 2 is provided in the photometer body 101, and an auxiliary mechanism 3 is provided on the photometer body 101.

[0026] Specifically, the spectrophotometer 1 is powered on and started for preheating, and the wavelength corresponding to the absorption peak of the gas to be measured is selected by adjusting the wavelength knob 103, and the reference light intensity when there is no gas is recorded.

[0027] Embodiment 2 See also Figure 4 and Figure 5 , and on the basis of the first embodiment, it is further obtained that the detection mechanism 2 includes a sample box 201 arranged in the detection chamber 104, a plurality of placement slots 206 are provided on the sample box 201, a cuvette 207 is placed in the placement slots 206, a plurality of detection holes 205 correspondingly connected to the plurality of placement slots 206 are provided on both sides of the sample box 201, a shell 216 fixedly arranged on the sample box 201 is correspondingly arranged below the plurality of detection holes 205, a second spring 218 is fixedly arranged in the shell 216, a slide plate 217 slidably connected to the inside of the shell 216 is fixedly arranged at the bottom of the second spring 218, and a connecting frame 219 is fixedly arranged at the bottom of the slide plate 217, The bottom of the connecting frame 219 slides through the shell 216 and is rotatably connected to the roller 220. An arc-shaped positioning groove 221 adapted to the roller 220 is provided in the detection chamber 104, and the arc-shaped positioning groove 221 and the detector 106 are on the same vertical line; a sliding seat 202 is fixedly provided at the bottom of the sample box 201, and a sliding groove 203 slidably connected to the sliding seat 202 is provided in the detection chamber 104. A pull-out rod 204 is fixedly provided at one end of the sample box 201, and the handle end of the pull-out rod 204 slides through the detection chamber 104 and extends to the outer end of the photometer body 101. A conduit 208 is connected to the cuvette 207, and a sealing cover 209 is threadedly connected to the conduit 208.

[0028] Specifically, a plurality of gases to be tested are introduced into a plurality of cuvettes 207 through a conduit 208, and then a sealing cover 209 is threadedly connected to the conduit 208 to achieve sealing of the gases to be tested. Then, the cover plate 105 is opened to slightly tilt the plurality of cuvettes 207 and place them into a plurality of placement slots 206 in the sample box 201. Then, the user moves the sample box 201 by pulling the draw rod 204, and the sliding seat 202 at the bottom of the sample box 201 slides along the slide slot 203. A plurality of detection holes 205 corresponding to and connected to the plurality of placement slots 206 are provided on both sides of the sample box 201. A roller 220 rollingly connected to the inner wall of the detection chamber 104 is provided below each detection hole 205. When the cuvette 207 near one end of the draw rod 204 is moved, the sample box 201 is moved. When it moves to the position of the detector 106, the roller 220 there is embedded in the arc-shaped positioning groove 221 under the elastic action of the second spring 218. At this time, the light wave emitted by the detector 106 can accurately pass through the detection hole 205 to detect the gas in the cuvette 207. The photometer body 101 calculates the gas concentration by the ratio of the reference light intensity and the light intensity passing through the gas, and transmits the detection data to the display screen of the control panel 102 to complete the detection of the gas. The gas in the remaining cuvettes 207 in the sample box 201 can be detected according to the above operation. After the detection is completed, the cover 105 is opened to take out multiple cuvettes 207 from the sample box 201, and the detection gas is discharged through the conduit 208 by opening the sealing cover 209.

[0029] See also Figure 6 , it is further obtained that a clamping assembly for positioning the cuvette 207 is arranged in the placement groove 206; the clamping assembly in the placement groove 206 includes a movable groove 210 opened in the placement groove 206, a sliding rod 211 is fixedly arranged in the movable groove 210, a limiting sleeve 212 is fixedly sleeved on the middle part of the sliding rod 211, both ends of the sliding rod 211 are slidably connected with sliding plates 213, a U-shaped positioning block 214 adapted to the cuvette 207 is fixedly arranged on the sliding plate 213, and both ends of the sliding rod 211 are sleeved with a first spring 215 fixedly arranged between the movable groove 210 and the sliding plate 213.

[0030] Specifically, when the cuvette 207 is placed in the placement groove 206, the cuvette 207 is lightly pressed so that the two U-shaped positioning blocks 214 are squeezed and drive the two sliding plates 213 to expand toward both ends along the surface of the slide rod 211. After the cuvette 207 is completely and properly placed in the U-shaped positioning blocks 214, the two U-shaped positioning blocks 214 are reset under the rebound action of the first spring 215, thereby achieving the clamping and positioning of the cuvette 207.

[0031] Embodiment 3 See also Figure 7-Figure 9, and on the basis of the first and second embodiments, it is further obtained that the auxiliary mechanism 3 includes a first flip frame 301 and a second flip frame 302, both ends of the photometer body 101 are rotatably provided with a rotating shaft 303, the first flip frame 301 and the second flip frame 302 are respectively fixedly connected to the corresponding rotating shaft 303, the first flip frame 301 and the second flip frame 302 are provided with a handle groove 304, the first flip frame 301 and the second flip frame 302 are fixedly provided with a dust cover 305, the bottom of the dust cover 305 is fixedly provided with a dustproof cloth 306, the bottom of the dustproof cloth 306 is fixedly provided with a limit rod 307, the inner side of the first flip frame 301 and the second flip frame 302 is provided with a limit groove 308 slidably connected to the limit rod 307; a lock assembly 309 is provided between the first flip frame 301 and the second flip frame 302, and the lock assembly 309 includes a plug fixedly provided on the first flip frame 301 The insert block 3091 is provided with a card slot 3092, the second flip frame 302 is provided with a slot 3093 plugged with the insert block 3091, the second flip frame 302 is provided with an active cavity 3094, a slider 3095 is slidably connected in the active cavity 3094, a wedge-shaped card block 3096 is fixedly provided on one side of the slider 3095, and an end of the wedge-shaped card block 3096 close to the slot 3093 slides through the active cavity 3094 and extends to the slot 3093 The guide rod 3097 is fixedly provided on the other side of the slider 3095, and a third spring 3098 is sleeved on the guide rod 3097 and fixedly provided between the movable cavity 3094 and the slider 3095. One end of the guide rod 3097 away from the slider 3095 slides through the movable cavity 3094 and is fixedly connected with a pull ring 3099. Support assemblies 310 are provided on the first flip frame 301 and the second flip frame 302.

[0032] Specifically, when using the spectrophotometer 1, the two pull rings 3099 are pulled outward respectively, so that the guide rod 3097 drives the slider 3095 to move, and the slider 3095 drives the wedge-shaped block 3096 to retract into the movable cavity 3094, so that the wedge-shaped block 3096 is released from the card slot 3092 on the insert block 3091, and then the limiting rods 307 on the first flip frame 301 and the second flip frame 302 are pushed upward respectively, so that the dustproof cloth 306 is folded and stored, and then the first flip frame 301 and the second flip frame 302 are turned downward by 180 degrees (as shown in the attached figure). Figure 1 ), at this time, the spectrophotometer 1 is supported by the supporting assembly 310 on the first flip frame 301 and the second flip frame 302; When the spectrophotometer 1 is not in use or needs to be carried, the first flip frame 301 and the second flip frame 302 are flipped upward by 180 degrees (as shown in the attached figure). Figure 2), when the first flip frame 301 and the second flip frame 302 are closed, the insert block 3091 on the first flip frame 301 is inserted into the slot 3093 on the second flip frame 302, and the wedge-shaped clamping block 3096 is squeezed and retracted into the movable cavity 3094. When the insert block 3091 is completely inserted into the slot 3093, the wedge-shaped clamping block 3096 automatically rebounds under the rebound action of the third spring 3098 and is clamped with the clamping groove 3092 on the insert block 3091, thereby locking and fixing the first flip frame 301 and the second flip frame 302. Then, the limiting rod 307 on the first flip frame 301 and the second flip frame 302 is pulled downward along the limiting groove 308 to extend the dustproof cloth 306 downward, and the operating part of the spectrophotometer 1 is sealed and dustproofed with the dustproof cover 305 to prevent the operating part of the spectrophotometer 1 from being attached with dust when not in use, thereby affecting the use. At the same time, the user can lift and carry the spectrophotometer 1 through the handle groove 304 on the first flip frame 301 and the second flip frame 302, which greatly improves the portability and practicality of the spectrophotometer 1.

[0033] See also Fig.10 , further obtained, the support assembly 310 includes a fixed box 3101 fixedly arranged on the first flip frame 301 and the second flip frame 302, a bidirectional screw rod 3102 is rotatably arranged in the fixed box 3101, one end of the bidirectional screw rod 3102 rotatably penetrates the fixed box 3101 and is fixedly connected to a rotating block 3103, both ends of the bidirectional screw rod 3102 are threadedly connected to a moving block 3104 slidably connected to the fixed box 3101, and both sides of the moving block 3104 are fixedly arranged A limiting slider 3105, a limiting slide groove 3106 slidably connected to the limiting slider 3105 is provided in the fixed box 3101, a connecting block 3107 is fixedly arranged on the moving block 3104, a supporting plate 3108 is arranged above the fixed box 3101, a mounting block 31010 is fixedly arranged at the bottom of the supporting plate 3108, a hinge rod 31011 is hingedly arranged between the connecting block 3107 and the mounting block 31010, and a rubber pad 3109 is fixedly arranged on the support plate 3108.

[0034] Specifically, the bidirectional screw rod 3102 is rotated by rotating the rotating block 3103 on the fixed box 3101, so that the two moving blocks 3104 threadedly connected to the two ends of the bidirectional screw rod 3102 can move toward each other under the limiting action of the limiting slider 3105. When the distance between the two moving blocks 3104 becomes smaller, the hinged rod 31011 can push the support plate 3108 to move, thereby realizing the adjustment of the height of the spectrophotometer 1.

[0035] In the description of the present invention, it is necessary to understand that the terms "center", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A spectrophotometer, comprising a spectrophotometer (1), wherein the spectrophotometer (1) comprises a photometer body (101), a detection chamber (104) and a detector (106), characterized in that: A detection mechanism (2) is provided in the photometer body (101), and an auxiliary mechanism (3) is provided on the photometer body (101); The detection mechanism (2) comprises a sample box (201) arranged in a detection chamber (104); a plurality of placement slots (206) are provided on the sample box (201); a cuvette (207) is placed in the placement slots (206); a plurality of detection holes (205) correspondingly connected to the plurality of placement slots (206) are provided on both sides of the sample box (201); a shell (216) fixedly arranged on the sample box (201) is correspondingly arranged below the plurality of detection holes (205); a cuvette (207) is fixedly arranged in the shell (216); A second spring (218) is provided, a slide plate (217) slidably connected to the inside of the housing (216) is fixedly provided at the bottom of the second spring (218), a connecting frame (219) is fixedly provided at the bottom of the slide plate (217), the bottom of the connecting frame (219) slides through the housing (216) and is rotatably connected to a roller (220), an arc-shaped positioning groove (221) adapted to the roller (220) is provided in the detection chamber (104), and the arc-shaped positioning groove (221) and the detector (106) are on the same vertical line; A clamping assembly for positioning the cuvette (207) is provided in the placement groove (206); The auxiliary mechanism (3) comprises a first flip frame (301) and a second flip frame (302); both ends of the photometer body (101) are rotatably provided with a rotating shaft (303); the first flip frame (301) and the second flip frame (302) are respectively fixedly connected to the corresponding rotating shaft (303); the first flip frame (301) and the second flip frame (302) are both provided with a handle groove (304); the first flip frame (301) and the second flip frame (302) are both fixedly provided with a dust cover (305); a dust cloth (306) is fixedly provided at the bottom of the dust cover (305); a limit rod (307) is fixedly provided at the bottom of the dust cloth (306); and a limit groove (308) slidably connected to the limit rod (307) is provided on the inner side of the first flip frame (301) and the second flip frame (302); A locking assembly (309) is provided between the first flip frame (301) and the second flip frame (302), and a supporting assembly (310) is provided on both the first flip frame (301) and the second flip frame (302).

2. A spectrophotometer according to claim 1, characterized in that: A sliding seat (202) is fixedly provided at the bottom of the sample box (201), a sliding groove (203) slidably connected to the sliding seat (202) is provided in the detection chamber (104), a pull-out rod (204) is fixedly provided at one end of the sample box (201), the handle end of the pull-out rod (204) slides through the detection chamber (104) and extends to the outer end of the photometer body (101), the cuvette (207) is connected to a conduit (208), and a sealing cover (209) is threadedly connected to the conduit (208).

3. A spectrophotometer according to claim 2, characterized in that: The clamping assembly in the placement groove (206) comprises a movable groove (210) opened in the placement groove (206), a sliding rod (211) is fixedly arranged in the movable groove (210), a limiting sleeve (212) is fixedly sleeved in the middle of the sliding rod (211), both ends of the sliding rod (211) are slidably connected to sliding plates (213), a U-shaped positioning block (214) adapted to the cuvette (207) is fixedly arranged on the sliding plate (213), and both ends of the sliding rod (211) are sleeved with a first spring (215) fixedly arranged between the movable groove (210) and the sliding plate (213).

4. A spectrophotometer according to claim 1, characterized in that: The locking assembly (309) comprises an insert block (3091) fixedly arranged on the first flip frame (301), the insert block (3091) being provided with a card slot (3092), the second flip frame (302) being provided with a slot (3093) plugged into the insert block (3091), an active cavity (3094) being provided in the second flip frame (302), a slider (3095) being slidably connected in the active cavity (3094), and a wedge-shaped card block (3096) being fixedly arranged on one side of the slider (3095).

5. A spectrophotometer according to claim 4, characterized in that: One end of the wedge-shaped clamping block (3096) close to the slot (3093) slides through the active cavity (3094) to extend into the slot (3093) and is clamped with the clamping groove (3092) on the insert block (3091); a guide rod (3097) is fixedly provided on the other side of the slider (3095); a third spring (3098) is sleeved on the guide rod (3097) and is fixedly provided between the active cavity (3094) and the slider (3095); and one end of the guide rod (3097) away from the slider (3095) slides through the active cavity (3094) and is fixedly connected to a pull ring (3099).

6. A spectrophotometer according to claim 1, characterized in that: The support assembly (310) comprises a fixed box (3101) fixedly arranged on the first flip frame (301) and the second flip frame (302), a bidirectional screw rod (3102) being rotatably arranged in the fixed box (3101), one end of the bidirectional screw rod (3102) rotatably passing through the fixed box (3101) and being fixedly connected to a rotating block (3103), and both ends of the bidirectional screw rod (3102) being threadedly connected to a moving block (3104) slidably connected to the fixed box (3101).

7. A spectrophotometer according to claim 6, characterized in that: Limiting sliders (3105) are fixedly arranged on both sides of the moving block (3104); a limiting sliding groove (3106) slidably connected to the limiting slider (3105) is provided in the fixed box (3101); a connecting block (3107) is fixedly arranged on the moving block (3104); a supporting plate (3108) is arranged above the fixed box (3101); a mounting block (31010) is fixedly arranged at the bottom of the supporting plate (3108); a hinged rod (31011) is hingedly arranged between the connecting block (3107) and the mounting block (31010); and a rubber pad (3109) is fixedly arranged on the supporting plate (3108).

8. A spectrophotometer according to claim 1, characterized in that: A control panel (102) and a wavelength adjustment knob (103) are provided on the photometer body (101), and a cover plate (105) is hingedly provided on the detection chamber (104).

9. According to a spectrophotometer according to any one of claims 1 to 8, the present invention further provides a gas detection method of a spectrophotometer, characterized in that: The following steps are involved: Step 1: After folding the dustproof cloth (306), the first flip frame (301) and the second flip frame (302) are flipped to the bottom of the photometer body (101) and are stably supported by the support assembly (310), the photometer body (101) is adjusted to a suitable height for use by adjusting the support assembly (310), the power of the spectrophotometer (1) is turned on, and the power switch of the photometer body (101) is turned on to preheat it to a stable working state; Step 2: introducing a plurality of gases to be tested into a plurality of cuvettes (207) through a conduit (208), then using a sealing cover (209) to seal the cuvettes (207), then opening the cover plate (105) and placing the plurality of cuvettes (207) into a plurality of placement slots (206) in a sample box (201), respectively, and clamping components in the placement slots (206) clamp and position the cuvettes (207); Step 3: Select a wavelength corresponding to the absorption peak of the gas to be tested by adjusting the wavelength knob (103), and record the reference light intensity when there is no gas. Pull the pull rod (204) to move the cuvette (207) to be tested to the position of the detector (106). The detector (106) emits a light wave to detect the gas in the cuvette (207). The photometer body (101) calculates the gas concentration by the ratio of the reference light intensity and the light intensity transmitted through the gas, and transmits the detection data to the display screen of the control panel (102). Step 4: After the detection is completed, the cover plate (105) is opened to take out the multiple cuvettes (207) from the sample box (201), and finally the sealing cover (209) is opened to discharge the detected gas through the conduit (208) into the collection container.

Images