Spectrophotometer and gas detection method

Abstract

The application discloses a kind of spectrophotometer and gas detection method, it is related to the technical field of spectrophotometer, including spectrophotometer, spectrophotometer includes photometer body, detection chamber and detector, detection mechanism is arranged in photometer body, auxiliary mechanism is arranged on photometer body.The application has practicality and by first turnover frame and second turnover frame are closed by being turned up, insert block is inserted into slot so that wedge-shaped block is extruded and shrinks, when insert block is completely inserted into slot, wedge-shaped block is automatically engaged with clamping groove under the rebound action of third spring, realize the locking and fixing of first turnover frame and second turnover frame when closed, then limit rod is pulled down along limit slot so that dust cloth is stretched down, cooperate dust cover plate to close dustproof of the operating part of spectrophotometer, meanwhile, user can carry spectrophotometer by handle slot, improve the portability and practicality of spectrophotometer.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of spectrophotometer, in particular to a spectrophotometer and a gas detection method. BACKGROUND

[0002] With the emphasis on the environment, the detection of harmful gas content in the air is becoming more and more common. Generally, a gas detector is used to detect the composition and content of the sampled gas. Commonly used gas detectors include spectrophotometers. A spectrophotometer is a device used to measure absorption spectra. In a spectrophotometer, there are visible ultraviolet spectrophotometers used to measure spectra from the near-infrared to the visible and ultraviolet regions, infrared spectrophotometers used to measure infrared spectra, and the like.

[0003] A spectrophotometer is disclosed in Chinese Patent No. CN214844784U, which includes a photometer body. A containing groove is provided on one side of the photometer body. A dust cover is received in the containing groove. The dust cover can be unfolded and placed on the photometer body. A rotating roller is rotatably arranged in the containing groove. One end of the dust cover is fixedly connected to the rotating roller. The dust cover can be wound onto the rotating roller.

[0004] The above-mentioned scheme provides the spectrophotometer with a dustproof effect by arranging the dust cover. However, when the spectrophotometer needs to be moved to another location for use, it needs to be manually moved. Since the spectrophotometer is covered by the dust cover, in order not to affect the dustproof performance of the spectrophotometer, the entire spectrophotometer needs to be manually moved. This is laborious and the dust cover is prone to sliding off, which affects the dustproof performance and greatly reduces the portability of the spectrophotometer.

[0005] Therefore, the first and second turnover frames are designed to be upwardly turned and closed, the insertion block is inserted into the insertion slot, the wedge-shaped clamping block is retracted into the movable cavity under the extrusion, and when the insertion block is completely inserted into the insertion slot, the wedge-shaped clamping block is automatically clamped with the clamping groove on the insertion block under the rebounding action of the third spring, thereby achieving locking and fixing of the first and second turnover frames when they are closed. Then, the limiting rods on the first and second turnover frames are pulled downward along the limiting grooves, the dust cloth is stretched downward, and the dustproof cover plate is used to close the operating part of the spectrophotometer, thereby avoiding dust from adhering to the operating part of the spectrophotometer when it is not in use and affecting the use. At the same time, the user can pull and carry the spectrophotometer through the handle grooves on the first and second turnover frames, thereby greatly improving the portability and practicality of the spectrophotometer. Therefore, it is necessary to provide a spectrophotometer and a gas detection method. SUMMARY

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

[0007] To achieve the above object, the present application provides the following technical solutions:

[0008] A kind of spectrophotometer, including spectrophotometer, the spectrophotometer includes photometer body, detection chamber and detector, detection mechanism is arranged in the photometer body, auxiliary mechanism is arranged on the photometer body;The detection mechanism includes the sample box being arranged in detection chamber, multiple placing slots are opened in the sample box, cuvettes are placed in the placing slot, multiple detection holes corresponding to multiple placing slots are opened in the two sides of the sample box, multiple the lower portion of detection hole is correspondingly provided with the shell fixedly arranged on the sample box, the second spring is fixedly arranged in the shell, the bottom of the second spring is fixedly provided with the sliding plate slidably connected with the inside of shell, the bottom of the sliding plate is fixedly provided with connecting frame, the connecting frame is slidably penetrated through the shell and is rotatably connected with the roller, the detection chamber is opened with the arc-shaped positioning slot matched with the roller, the arc-shaped positioning slot is on the same vertical line with the detector;The placing slot is provided with a clamping assembly for positioning cuvette;The auxiliary mechanism includes first turnover frame and second turnover frame, rotary shaft is rotatably arranged at both ends of the photometer body, the first turnover frame and the second turnover frame are fixedly connected with corresponding rotary shaft respectively, handle slot is opened in the first turnover frame and the second turnover frame, dustproof cover plate is fixedly arranged on the first turnover frame and the second turnover frame, dustproof cloth is fixedly arranged on the bottom of the dustproof cover plate, the bottom of the dustproof cloth is fixedly provided with a limiting rod, the inside of the first turnover frame and the second turnover frame is opened with the limiting slot slidably connected with the limiting rod;Locking assembly is arranged between the first turnover frame and the second turnover frame, support assembly is arranged on the first turnover frame and the second turnover frame.

[0009] According to the above technical solutions, the bottom of the sample box is fixedly provided with a sliding seat, a sliding groove is opened in the detection chamber and slidably connected with the sliding seat, one end of the sample box is fixedly provided with a pull rod, the handle end of the pull rod is slidably penetrated through the detection chamber and extends to the outer end of the photometer body, a conduit is connected with the cuvette, and a sealing cap is threadedly connected with the conduit.

[0010] According to the above technical solutions, the clamping assembly in the placing slot includes a movable slot opened in the placing slot, a sliding rod is fixedly arranged in the movable slot, a limiting sleeve is fixedly sleeved on the middle part of the sliding rod, sliding plates are slidably connected at both ends of the sliding rod, U-shaped positioning blocks matched with the cuvette are fixedly arranged on the sliding plates, and first springs are sleeved on both ends of the sliding rod and fixedly arranged between the movable slot and the sliding plates.

[0011] According to the above technical solution, the locking assembly includes an insert block fixedly arranged on the first flip frame, a card slot is provided on the insert block, a slot is provided on the second flip frame to be plugged into the insert block, a movable cavity is provided in the second flip frame, a slider is slidably connected in the movable cavity, and a wedge-shaped card block is fixedly provided on one side of the slider.

[0012] According to the above technical solution, the end of the wedge-shaped block close to the slot slides through the active cavity and 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 to a pull ring.

[0013] According to the above technical solution, the support assembly includes a fixed box fixedly arranged on the first flip frame and the second flip frame, a bidirectional screw is rotatably arranged in the fixed box, one end of the bidirectional screw rotates 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.

[0014] According to the above technical solution, limiting sliders are fixedly provided on both sides of the moving block, a limiting sliding groove is provided in the fixed box and is slidably connected to the limiting slider, 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.

[0015] According to the above technical solution, a control panel and a wavelength adjustment knob are provided on the photometer body, and a cover is hingedly provided on the detection chamber.

[0016] Based on the spectrophotometer described above, the present invention further proposes a gas detection method using a spectrophotometer, comprising the following steps:

[0017] Step 1: After folding the dustproof cloth, flip the first and second flip frames 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. Turn on the power of the spectrophotometer and turn on the power switch of the photometer body to preheat it to a stable working state.

[0018] Step 2: Introduce multiple gases to be tested into multiple cuvettes through the conduit, then seal the cuvettes with a sealing cover, then open the cover and place the cuvettes into the multiple placement slots in the sample box, and use the clamping components in the placement slots to clamp and position the cuvettes;

[0019] Step three: by adjusting the wavelength knob to select the wavelength corresponding to the absorption peak of the gas to be detected, and recording the reference light intensity without gas, pulling the pull rod to move the cuvette to be detected to the position of the detector, the detector emits light waves to detect the gas in the cuvette, and the photometer body 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;

[0020] Step four: after the detection is completed, the cover plate is opened to take out the plurality of cuvettes from the sample box, and finally the sealed cover is opened to make the detected gas pass through the conduit and be discharged into the collection container.

[0021] Compared with the prior art, the beneficial effects of the present application are:

[0022] 1、The first and second turnover frames are turned upward to be closed, the insertion block is inserted into the insertion slot, the wedge-shaped clamping block is retracted into the movable cavity under extrusion, when the insertion block is completely inserted into the insertion slot, the wedge-shaped clamping block is automatically clamped with the clamping groove on the insertion block under the rebounding action of the third spring, the locking and fixing of the first and second turnover frames when being closed are realized, then the limiting rods on the first and second turnover frames are pulled downward along the limiting grooves, the dust cloth is stretched downward, the operating part of the spectrophotometer is closed and dustproofed, dust attached to the operating part of the spectrophotometer when not in use is avoided to affect use, and the user can carry the spectrophotometer by pulling the first and second turnover frames through the handle grooves on the first and second turnover frames, the portability and practicality of the spectrophotometer are greatly improved.

[0023] 2、The two pull rings are pulled outward, the guide rod drives the sliding block to drive the wedge-shaped clamping block to move and be retracted into the movable cavity and be disengaged from the clamping of the insertion slot on the insertion block, then the limiting rods are pushed upward to fold and store the dust cloth, then the first and second turnover frames are turned downward by one hundred and eighty degrees, the spectrophotometer is supported by the support plates in the support assembly, the two moving blocks connected with the double-threaded rods at both ends are moved towards each other by rotating the rotating block, when the distance between the two moving blocks becomes smaller, the hinged rod can push the support plates to move, the use height of the spectrophotometer can be adjusted, the rubber pads arranged on the support plates can play the anti-skid role, the spectrophotometer can be stably placed on platforms with different flatness when in use, and the spectrophotometer can be adjusted to the suitable operating height according to the heights of different operators, the functionality and practicality of the spectrophotometer are improved.

[0024] 3、The present application, by opening the cover plate, the plurality of cuvettes are respectively slightly inclined and placed in the plurality of placing grooves in the sample box, slightly press the cuvette to make two U-shaped positioning blocks extruded to drive two sliding plates to expand along the surface of the slide bar to two ends, after the cuvette is completely positioned in the U-shaped positioning block, the two U-shaped positioning blocks are reset under the rebound action of the first spring, the clamping and positioning of the cuvette are realized, and the situation that the cuvette is tilted or shaken during detection is avoided, thereby affecting the accuracy of gas detection.

[0025] 4、The present application, by pulling the pull rod, the sample box is moved, the sliding seat at the bottom of the sample box is slid along the sliding groove, a plurality of detection holes corresponding to the plurality of placing grooves are formed on the two sides of the sample box, a roller in rolling connection with the inner wall of the detection chamber is arranged below each detection hole, when the outermost cuvette moves to the position of the detector, the roller at this position 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 stably positioned with the position of the detector, the light wave emitted by the detector can accurately pass through the detection hole to detect the gas in the cuvette, and the precision of the gas detection data is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, which together with the embodiments of the present application, serve to explain the present application, and do not constitute a limitation on the present application.

[0027] In the drawings:

[0028] Figure 1 is a perspective structural schematic view of a spectrophotometer and a gas detection method in an embodiment of the present application;

[0029] Figure 2 is a perspective structural schematic view of a protection mechanism in an embodiment of the present application;

[0030] Figure 3 is a perspective structural schematic view of a photometer body in an embodiment of the present application;

[0031] Figure 4 is a sectional view structural schematic view of a photometer body in an embodiment of the present application;

[0032] Figure 5 is a sectional view structural schematic view of a sample box in an embodiment of the present application; Figure 4 is an enlarged view of structure at A in the embodiment of the present application;

[0033] Figure 6 is a sectional view structural schematic view of a sample box in an embodiment of the present application;

[0034] Figure 7 is a perspective structural schematic view of a first turnover frame in an embodiment of the present application;

[0035] Figure 8 is a sectional view of a second turnover frame in an embodiment of the present application;

[0036] Figure 9 is a perspective view of a dustproof cloth in an embodiment of the present application;

[0037] Figure 10 is a perspective view of a support assembly in an embodiment of the present application.

[0038] In the figure: 1, spectrophotometer; 101, spectrophotometer 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, sliding groove; 204, pull rod; 205, detection hole; 206, placement groove; 207, cuvette; 208, conduit; 209, sealing cover; 210, movable groove; 211, sliding rod; 212, limiting sleeve; 213, sliding plate; 214, U-shaped positioning block; 215, first spring; 216, shell; 217, sliding plate; 218, second spring; 219, connecting frame; 220, roller; 221, arc-shaped positioning groove; 3, auxiliary mechanism; 301, first turnover frame; 302, second turnover frame; 303, rotation shaft; 304, handle slot; 305, dustproof cover plate; 306, dustproof cloth; 307, limiting rod; 308, limiting groove; 309, lock catch assembly; 3091, plug; 3092, clamping groove; 3093, insertion groove; 3094, movable cavity; 3095, sliding block; 3096, wedge-shaped clamping 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, limiting sliding block; 3106, limiting sliding groove; 3107, connecting block; 3108, support plate; 3109, rubber pad; 31010, mounting block; 31011, hinged rod. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0040] In order to better understand the above technical solutions, the above technical solutions will be described in detail below with reference to the drawings in the specification and the specific embodiments.

[0041] Embodiment one

[0042] In combination withFigures 1-10 The present application provides a technical solution: a spectrophotometer, comprising a spectrophotometer 1, the spectrophotometer 1 comprising a photometer body 101, a detection chamber 104 and a detector 106, the photometer body 101 being provided with a control panel 102 and a wavelength knob 103, the detection chamber 104 being hingedly provided with a cover plate 105, the photometer body 101 being provided with a detection mechanism 2, and the photometer body 101 being provided with an auxiliary mechanism 3.

[0043] Specifically, the power of the spectrophotometer 1 is turned on and the spectrophotometer 1 is started to preheat, 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 without gas is recorded.

[0044] Example two

[0045] Referring to Figure 4 and Figure 5 and on the basis of example one, it is further obtained that the detection mechanism 2 comprises a sample box 201 arranged in the detection chamber 104, a plurality of placing grooves 206 are formed in the sample box 201, a cuvette 207 is arranged in each placing groove 206, a plurality of detection holes 205 corresponding to the plurality of placing grooves 206 are formed in the two sides of the sample box 201, a housing 216 fixedly arranged on the sample box 201 is arranged below each detection hole 205, a second spring 218 is fixedly arranged in the housing 216, a sliding plate 217 slidingly connected with the inside of the housing 216 is fixedly arranged at the bottom of the second spring 218, a connecting frame 219 is fixedly arranged at the bottom of the sliding plate 217, a roller 220 is slidingly penetrated through the housing 216 and rotatably connected with the bottom of the connecting frame 219, an arc-shaped positioning groove 221 adapted to the roller 220 is formed in the detection chamber 104, and the arc-shaped positioning groove 221 is on the same vertical line with the detector 106; a sliding seat 202 is fixedly arranged at the bottom of the sample box 201, a sliding groove 203 slidingly connected with the sliding seat 202 is formed in the detection chamber 104, a pull rod 204 is fixedly arranged at one end of the sample box 201, the handle end of the pull rod 204 is slidingly penetrated through the detection chamber 104 and extended to the outer end of the photometer body 101, a conduit 208 is communicatively arranged on the cuvette 207, and a sealing cover 209 is threadedly connected with the conduit 208.

[0046] Specifically, the plurality of to-be-tested gases are introduced into the plurality of cuvettes 207 through the conduits 208 respectively, then the sealing covers 209 are threadedly connected with the conduits 208 to realize the sealing of the to-be-tested gases, then the plurality of cuvettes 207 are slightly inclined and placed into the plurality of placing grooves 206 in the sample box 201 by opening the cover plate 105, then the user moves the sample box 201 by pulling the pull rod 204, the sliding seat 202 at the bottom of the sample box 201 slides along the sliding groove 203, a plurality of detection holes 205 corresponding to the plurality of placing grooves 206 are formed on the two sides of the sample box 201, a roller 220 in rolling connection with the inner wall of the detection chamber 104 is arranged below each detection hole 205, when the cuvette 207 near one end of the pull rod 204 moves to the position of the detector 106, the roller 220 at this position is embedded into 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 gases in the remaining cuvettes 207 in the sample box 201 are detected according to the above operation, and after the detection is completed, the plurality of cuvettes 207 are taken out from the sample box 201 by opening the cover plate 105, and the detection gases are discharged through the conduits 208 by opening the sealing covers 209.

[0047] Referring to Figure 6 , it is further obtained that the placing groove 206 is provided with a clamping assembly for positioning the cuvette 207; the clamping assembly in the placing groove 206 comprises a movable groove 210 formed in the placing groove 206, a sliding rod 211 fixedly arranged in the movable groove 210, a limiting sleeve 212 fixedly sleeved on the middle part of the sliding rod 211, a sliding plate 213 slidably connected with both ends of the sliding rod 211, a U-shaped positioning block 214 fixedly arranged on the sliding plate 213 and matched with the cuvette 207, and a first spring 215 fixedly sleeved on both ends of the sliding rod 211 and arranged between the movable groove 210 and the sliding plate 213.

[0048] Specifically, when the cuvette 207 is placed into the placing groove 206, the cuvette 207 is slightly pressed to make the two U-shaped positioning blocks 214 be extruded to drive the two sliding plates 213 to expand along the surface of the sliding rod 211 to two ends, after the cuvette 207 is completely and orthogonally placed into the U-shaped positioning block 214, the two U-shaped positioning blocks 214 are reset under the rebound action of the first spring 215 to realize the clamping and positioning of the cuvette 207.

[0049] Example three

[0050] Referring to Figures 7-9And on the basis of embodiment one and embodiment two, it is further obtained that the auxiliary mechanism 3 includes a first turnover frame 301 and a second turnover frame 302, the photometer body 101 is rotationally provided with a rotating shaft 303 at both ends, the first turnover frame 301 and the second turnover frame 302 are fixedly connected with the corresponding rotating shaft 303, a handle slot 304 is formed on the first turnover frame 301 and the second turnover frame 302, a dust cover 305 is fixedly arranged on the first turnover frame 301 and the second turnover frame 302, the bottom of the dust cover 305 is fixedly arranged with a dust cloth 306, the bottom of the dust cloth 306 is fixedly arranged with a limiting rod 307, a limiting slot 308 in sliding connection with the limiting rod 307 is formed on the inner side of the first turnover frame 301 and the second turnover frame 302; a lock catch assembly 309 is arranged between the first turnover frame 301 and the second turnover frame 302, the lock catch assembly 309 includes an insertion block 3091 fixedly arranged on the first turnover frame 301, a clamping slot 3092 is formed on the insertion block 3091, an insertion slot 3093 in insertion connection with the insertion block 3091 is formed on the second turnover frame 302, an activity cavity 3094 is formed in the second turnover frame 302, a sliding block 3095 in sliding connection is arranged in the activity cavity 3094, a wedge-shaped clamping block 3096 is fixedly arranged on one side of the sliding block 3095, one end of the wedge-shaped clamping block 3096 close to the insertion slot 3093 is in sliding connection and extends into the insertion slot 3093 through the activity cavity 3094 and is in clamping connection with the clamping slot 3092 on the insertion block 3091, a guide rod 3097 is fixedly arranged on the other side of the sliding block 3095, the guide rod 3097 is sleeved with a third spring 3098 fixedly arranged between the activity cavity 3094 and the sliding block 3095, one end of the guide rod 3097 away from the sliding block 3095 is in sliding connection and is fixedly connected with a pull ring 3099, and a supporting assembly 310 is arranged on the first turnover frame 301 and the second turnover frame 302.

[0051] Specifically, when the spectrophotometer 1 is used, the two pull rings 3099 are pulled outwards respectively, so that the guide rod 3097 drives the sliding block 3095 to move, the sliding block 3095 drives the wedge-shaped clamping block 3096 to move back into the activity cavity 3094, the wedge-shaped clamping block 3096 is disengaged from the clamping slot 3092 on the insertion block 3091, then the limiting rods 307 on the first turnover frame 301 and the second turnover frame 302 are pushed upwards respectively, so that the dust cloth 306 is folded and stored, then the first turnover frame 301 and the second turnover frame 302 are turned downwards by one hundred and eighty degrees (as shown in the attached Figure 1

[0052] When the spectrophotometer 1 is not used or needs to be carried, the first turnover frame 301 and the second turnover frame 302 are turned upwards by one hundred and eighty degrees (as shown in the attached Figure 2 ​), when the first turnover frame 301 and the second turnover frame 302 are closed, the plug 3091 on the first turnover frame 301 is inserted into the slot 3093 on the second turnover frame 302, and the wedge-shaped clamping block 3096 is extruded to retract into the movable cavity 3094, when the plug 3091 is completely inserted into the slot 3093, the wedge-shaped clamping block 3096 is automatically rebounded under the rebounding action of the third spring 3098 and clamped with the clamping groove 3092 on the plug 3091, realizing the locking and fixing of the first turnover frame 301 and the second turnover frame 302, then the limiting rod 307 on the first turnover frame 301 and the second turnover frame 302 is pulled downward along the limiting groove 308, the dust cloth 306 is stretched downward, and the dust cover 305 is closed to the operating part of the spectrophotometer 1, avoiding dust from adhering to the operating part of the spectrophotometer 1 when not in use, and affecting use, at the same time, the user can pull and carry the spectrophotometer 1 through the handle groove 304 on the first turnover frame 301 and the second turnover frame 302, greatly improving the portability and practicability of the spectrophotometer 1.

[0053] Referring to Figure 10 , further obtained, the support assembly 310 includes a fixed box 3101 fixedly arranged on the first turnover frame 301 and the second turnover 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 with a rotating block 3103, both ends of the bidirectional screw rod 3102 are threadedly connected with a moving block 3104 slidingly connected with the fixed box 3101, limiting sliding blocks 3105 are fixedly arranged on both sides of the moving block 3104, limiting sliding grooves 3106 slidingly connected with the limiting sliding blocks 3105 are arranged 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, an installation 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 installation block 31010, and rubber pads 3109 are fixedly arranged on the supporting plate 3108.

[0054] Specifically, the rotating block 3103 on the fixed box 3101 is rotated to rotate the bidirectional screw rod 3102, so that the two moving blocks 3104 threadedly connected with both ends of the bidirectional screw rod 3102 can move towards each other under the limiting action of the limiting sliding blocks 3105, when the distance between the two moving blocks 3104 becomes smaller, the hinged rod 31011 can push the supporting plate 3108 to move, realizing the adjustment of the use height of the spectrophotometer 1.

[0055] In the description of the application, it should be understood that the terms "center", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the scope of protection of the application.

[0056] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed application. The scope of protection of the present application is defined by the appended 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) includes 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), and a shell (216) fixedly arranged on the sample box (201) is correspondingly provided below the plurality of detection holes (205), and a cuvette (207) is fixedly provided in the shell (216). A second spring (218) is provided, and a slide plate (217) is fixedly provided at the bottom of the second spring (218) and is slidably connected to the inside of the housing (216). 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) includes a first flip frame (301) and a second flip frame (302), both ends of the photometer body (101) are rotatably provided with a rotation shaft (303), the first flip frame (301) and the second flip frame (302) are respectively fixedly connected to the corresponding rotation 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), the bottom of the dust cover (305) is fixedly provided with a dust cloth (306), the bottom of the dust cloth (306) is fixedly provided with a limit rod (307), and 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 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); The locking assembly (309) includes an insert block (3091) fixedly mounted on the first flip frame (301), a card slot (3092) being provided on the insert block (3091), a slot (3093) being provided on the second flip frame (302) for plugging into the insert block (3091), a movable cavity (3094) being provided in the second flip frame (302), a slider (3095) being slidably connected in the movable cavity (3094), and a wedge-shaped card block (3096) being fixedly provided on one side of the slider (3095); The end of the wedge-shaped block (3096) close to the slot (3093) slides through the active cavity (3094) and extends into the slot (3093) and is engaged with the slot (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). The 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).

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), a conduit (208) is connected to the cuvette (207), and a sealing cover (209) is threadedly connected to the conduit (208); 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).

3. A spectrophotometer according to claim 2, characterized in that: The clamping assembly in the placement groove (206) includes a movable groove (210) opened in the placement groove (206), a slide rod (211) is fixedly arranged in the movable groove (210), a middle fixed sleeve of the slide rod (211) is provided with a limit sleeve (212), both ends of the slide rod (211) are slidably connected to a sliding plate (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 slide 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 2, 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) is rotatably arranged in the fixed box (3101); one end of the bidirectional screw rod (3102) rotatably passes through the fixed box (3101) and is fixedly connected to a rotating block (3103); and both ends of the bidirectional screw rod (3102) are threadedly connected to a moving block (3104) that is slidably connected to the fixed box (3101).

5. A spectrophotometer according to claim 4, characterized in that: Limiting sliders (3105) are fixedly provided 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 provided on the moving block (3104), a supporting plate (3108) is provided above the fixed box (3101), a mounting block (31010) is fixedly provided at the bottom of the supporting plate (3108), a hinged rod (31011) is hingedly provided between the connecting block (3107) and the mounting block (31010), and a rubber pad (3109) is fixedly provided on the support plate (3108).

6. A gas detection method based on the spectrophotometer according to any one of claims 2 to 5, 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 firmly supported by the support assembly (310), and the photometer body (101) is adjusted to a suitable height for use by adjusting the support assembly (310), and the spectrophotometer (1) is powered 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 the conduit (208), then using a sealing cover (209) to seal the cuvettes (207), then opening the cover (105) and placing the plurality of cuvettes (207) into a plurality of placement slots (206) in the sample box (201), and clamping the cuvettes (207) with the clamping components in the placement slots (206); Step 3: Select the wavelength corresponding to the absorption peak of the gas to be measured 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 detected to the position of the detector (106). The detector (106) emits light waves 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 test is completed, the cover (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 tested gas through the conduit (208) into the collection container.

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