Fluorescence spectrophotometer for measuring multiple parameters of water quality

Abstract

The utility model provides a fluorescence spectrophotometer for measuring multiple parameters of water quality. The fluorescence spectrophotometer comprises a spectrophotometer main body, according to the fluorospectro photometer for water quality multi-parameter measurement, when the water quality is measured, a worker needs to adjust the position of the sample holder, so that a measured water quality sample can be aligned with a light path, and when the worker pulls the sample holder outwards through a pull ring, the sample holder can be accurately positioned due to large outward pulling force of the worker; according to the present invention, the water quality sample placed in the sample holder is easily splashed from the cuvette so as to cause the moisture in the device due to the influence of the water, or the device is corroded due to the splashing of the solution during the measurement of other solutions, and through the arrangement of the wiping cloth, when the water or the solution is splashed in the device, the wiping cloth can be removed; the sliding block is driven by the motor to slide left and right on the second sliding rod to adjust the position of the wiping cloth, and then the length of the wiping cloth is adjusted through the hydraulic cylinder, so that the wiping cloth can wipe water or a solution splashed out of the sample chamber through the sliding block and the hydraulic cylinder.

Description

Technical Field

[0001] The utility model relates to the technical field of water quality detection technology equipment, in particular to a fluorescence spectrophotometer used for multi-parameter measurement of water quality. Background Art

[0002] The main body of the multi-parameter spectrophotometer, also known as a spectrometer, is a scientific instrument that decomposes light with complex components into spectral lines. The measurement range generally includes the visible light region with a wavelength range of 380 to 780 nm and the ultraviolet light region with a wavelength range of 200 to 380 nm. Different light sources have their own unique emission spectra, so different illuminants can be used as the light source of the instrument. The emission spectrum of tungsten lamp: The spectral light with a wavelength of 380 to 780 nm emitted by the tungsten lamp light source is refracted through a prism to obtain a continuous color spectrum composed of red, orange, yellow, green, blue, indigo, and purple, which can be used as the light source of the visible light spectrophotometer.

[0003] During the use of the existing fluorescence spectrophotometer body, it is difficult to determine the parameters of water quality, and it cannot be evenly irradiated in the slit. When the staff pulls the sample rack outward through the pull ring, the staff pulls outward with a large force, causing the water quality sample placed in the sample rack to easily splash out of the cuvette, causing the inside of the device to become damp due to the influence of water, or when measuring other solutions, the device will be corroded due to the splashing of the solution. In addition, during long-term use, a lot of dust accumulates inside the sample chamber, causing the staff to clean the device regularly, which brings unnecessary trouble. After the wiping cloth is used, it is easy to become damp due to the influence of water and solution, and the wiping cloth will have an odor due to long-term use. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies in the prior art, the present application aims to provide a fluorescence spectrophotometer for multi-parameter measurement of water quality, comprising a spectrophotometer body, a sample chamber is arranged inside the spectrophotometer body, a sample rack for fixing a contrast color dish is arranged inside the sample chamber, a sample slot for placing the contrast color dish is arranged inside the sample rack, the sample rack is fixed inside the sample chamber through a bottom plate, a first sliding rod is arranged on the left and right sides above the bottom plate, a sliding block that can slide on the first sliding rod is arranged at the bottom of the sample rack, a pull rod is arranged at the front of the sample rack, and the A pull ring for pulling the sample rack to move is provided at the front of the pull rod, a fixed plate is provided at the upper part of the sample chamber, a motor is provided on the side of the fixed plate, a second slide bar is provided inside the fixed plate to enable the slider to slide, the slider is driven by the motor to move back and forth on the second slide bar, a hydraulic cylinder for adjusting the length of the wiping cloth is provided at the bottom of the slider, a support rod is provided at the bottom of the hydraulic cylinder, a rotatable block is provided at the bottom of the support rod, a fixed ring for clamping the card plate is provided at the bottom of the rotating block, a wiping cloth for wiping the sample chamber is provided at the lower part of the card plate, and the wiping cloth is a soft cloth.

[0005] Preferably, a display is provided inside the top of the spectrophotometer body, a control module is provided below the display, the sample chamber is fixedly mounted on the inner wall of the spectrophotometer body, a sample rack is provided inside the sample chamber, and a plurality of sample slots are provided inside the sample rack.

[0006] Preferably, the bottom plate is fixedly mounted on the lower surface of the sample rack, the first sliding rod is symmetrically mounted on the left and right ends of the top of the bottom plate, the pull rod is connected to the middle of the front of the sample rack, and the pull ring is mounted in front of the pull rod.

[0007] Preferably, the detector is installed on one side of the sample rack, a reflector is provided on the upper side of the sample rack, a tungsten lamp for emitting the spectrum is provided below the reflector, an excitation monochromator is installed on the left side of the bottom of the tungsten lamp, an emission monochromator is provided above the detector, and a wavelength knob is installed on one side of the excitation monochromator.

[0008] Preferably, the fixed plate is fixedly mounted on the upper surface of the sample chamber, the motor is mounted on the side of the fixed plate, one end of the motor is connected to a second sliding rod, the sliding block is sleeved inside the second sliding rod, the hydraulic cylinder is movably mounted below the sliding rod, the support rod is mounted below the hydraulic cylinder, the rotating block is movably mounted on the lower part of the support rod, the fixed ring is movably mounted on the lower part of the rotating block, the clamping plate is sleeved on the inner wall of the fixed ring, and the wiping cloth is movably mounted on the lower part of the fixed ring. Beneficial Effects

[0009] 1. The fluorescence spectrophotometer for multi-parameter measurement of water quality has a sample rack and a sample slot arranged in the sample chamber. When measuring the water quality, the staff will load the cuvette matching the sample slot with the water to be measured, and then put the cuvette filled with water into the sample slot in the sample rack. After being put in, a light source is emitted by a tungsten lamp, and the light emitted by the light source is concentrated into the excitation monochromator through a reflector and fills the collimator of the excitation monochromator. At this time, the excitation monochromator becomes monochromatic light, which is irradiated on the measured sample in the sample rack to generate fluorescence. The fluorescence generated by the substance is dispersed into monochromatic light by the emission monochromator, and converted into a corresponding electrical signal through a photomultiplier tube. At the same time, a beam of continuous light is emitted through the tungsten lamp and passes through the water added to the cuvette. The water will absorb some of the wavelengths, and the wavelengths that are not absorbed will be detected by the detector and form a Spectrum, thus the concentration of a substance in the water can be determined by analyzing the spectrum absorbed by the water, or by adding a fluorescent signal to the water and exciting it with a tungsten lamp, fluorescence will be generated, and the generated fluorescence will be captured and analyzed by the detector to calculate the absorbance value of the water, which is converted into the concentration of the water, so that the absorbance value of the water is proportional to the concentration of the water, so as to determine the concentration of the water, and through the setting of the excitation monochromator and the emission monochromator, the excitation monochromator can screen out a specific excitation spectrum, and the emission monochromator can screen out a specific emission spectrum, through the excitation monochromator and the emission monochromator, the signal intensity is enhanced by increasing the slit width, and the resolution is increased by reducing the slit width, so as to reduce the interference of stray light on fluorescence measurement, and at the same time have high dispersion ability, so that weak fluorescence can also be detected, thereby improving the measurement effect of the device.

[0010] 2. The fluorescence spectrophotometer for multi-parameter measurement of water quality requires that when measuring water quality, the staff needs to adjust the position of the sample rack so that the water quality sample to be measured can be aligned with the light path. When the staff pulls the sample rack outward through the pull ring, the water quality sample placed in the sample rack is easily splashed out of the cuvette due to the large force of the staff pulling outward, causing the inside of the device to be affected by water and become damp, or when measuring other solutions, the device may be corroded due to the splashing of the solution. When there is water or solution splashing out inside, the motor drives the slider to slide left and right on the second slide bar to adjust the position of the wipe cloth through the provided wipe cloth, and then the length of the wipe cloth is adjusted through the hydraulic cylinder, so that the wipe cloth can wipe the water or solution splashed out of the sample chamber through the slider and the hydraulic cylinder. At the same time, the provided wipe cloth can also be used to wipe the sample chamber regularly, avoiding the sample chamber from being damaged for a long time. During the use of the device, a lot of dust accumulates inside, which requires the staff to clean the device regularly, thus bringing unnecessary trouble. The wiping cloth is provided so that the splashed water and solution can be cleaned while the dust can be cleaned. The wiping cloth is rotated by rotating the rotating block, so that the angle of the wiping cloth can be adjusted by the rotating block, so that the wiping cloth can wipe the inside of the sample chamber at different angles. After use, the wiping cloth is easily damp due to the influence of water and solution. At the same time, long-term use causes the wiping cloth to have an odor. Therefore, through the provided fixing ring and card plate, when the wiping cloth is replaced, the staff rotates the fixing ring to twist the fixing ring out of the card plate. At the same time, when the wiping cloth is installed, the card plate is aligned with the card slot in the fixing ring and the fixing ring is tightened to fix the wiping cloth, which has the advantage of facilitating the replacement of the wiping cloth. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0012] Figure 1 This is a schematic diagram of the internal structure of the fluorescence spectrophotometer used for multi-parameter water quality measurement of the utility model;

[0013] Figure 2 This is a schematic diagram of the three-dimensional structure of the fluorescence spectrophotometer used for multi-parameter water quality measurement of the utility model;

[0014] Figure 3 For this utility model Figure 1 Enlarged structural diagram at P;

[0015] Figure 4 For this utility model Figure 1 A is an enlarged schematic diagram of the structure.

[0016] In the figure: 1. spectrophotometer body; 101. display; 102. control module; 2. sample chamber; 3. sample rack; 4. sample slot; 5. bottom plate; 501. first slide bar; 6. pull rod; 7. pull ring; 8. detector; 9. reflector; 10. tungsten lamp; 11. excitation monochromator; 11-1. emission monochromator; 12. wavelength knob; 13. fixed plate; 14. motor; 15. second slide bar; 16. slider; 17. hydraulic cylinder; 18. support rod; 19. rotating block; 20. fixed ring; 21. card plate; 22. wiping cloth. DETAILED DESCRIPTION

[0017] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It is also necessary to explain that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings.

[0018] The accompanying drawings in the embodiments of the present invention: different types of section lines in the drawings are not marked according to national standards, nor do they impose any requirements on the materials of the components. Instead, they are used to distinguish the cross-sectional views of the components in the drawings.

[0019] See also Figure 1-4 A fluorescence spectrophotometer for multi-parameter measurement of water quality, comprising a spectrophotometer body 1, a sample chamber 2 is arranged inside the spectrophotometer body 1, a sample rack 3 for fixing a contrast color dish is arranged inside the sample chamber 2, a sample slot 4 for placing a contrast color dish is arranged inside the sample rack 3, the sample rack 3 is fixed inside the sample chamber 2 through a bottom plate 5, a first slide bar 501 is arranged on the left and right sides above the bottom plate 5, a sliding block that can slide on the first slide bar 501 is arranged at the bottom of the sample rack 3, a pull rod 6 is arranged at the front of the sample rack 3, a pull ring 7 for pulling the sample rack 3 to move is arranged at the front of the pull rod 6, the sample chamber A fixing plate 13 is provided at the top, a motor 14 is provided at the side of the fixing plate 13, a second slide bar 15 is provided inside the fixing plate 13 for sliding a slider 16, the slider 16 is driven by the motor 14 to move back and forth on the second slide bar 15, a hydraulic cylinder 17 for adjusting the length of a wiping cloth 22 is provided at the bottom of the slider 16, a supporting rod 18 is provided at the bottom of the hydraulic cylinder 17, a rotating block 19 for rotating is provided at the bottom of the supporting rod 18, a fixing ring 20 for clamping a clamping plate 21 is provided at the bottom of the rotating block 19, a wiping cloth 22 for wiping the sample chamber 2 is provided at the lower part of the clamping plate 21, and the wiping cloth 22 is a soft cloth.

[0020] A display 101 is provided inside the top of the spectrophotometer body 1, a control module 102 is provided below the display 101, a sample chamber 2 is fixedly mounted on the inner wall of the spectrophotometer body 1, a sample rack 3 is provided inside the sample chamber 2, and a plurality of sample slots 4 are provided inside the sample rack 3.

[0021] The bottom plate 5 is fixedly mounted on the lower surface of the sample rack 3 , the first slide bar 501 is symmetrically mounted on the left and right ends of the top of the bottom plate 5 , the pull rod 6 is connected to the middle of the front of the sample rack 3 , and the pull ring 7 is mounted in front of the pull rod 6 .

[0022] The detector 8 is installed on one side of the sample rack 3 , a reflector 9 is provided on the upper side of the sample rack 3 , and a tungsten lamp 10 for emitting a spectrum is provided below the reflector 9 .

[0023] An excitation monochromator 11 is installed on the left side of the bottom of the tungsten lamp 10 , an emission monochromator 11 - 1 is provided above the detector 8 , and a wavelength knob 12 is installed on one side of the excitation monochromator 11 .

[0024] Among them, the fixed plate 13 is fixedly installed on the upper surface of the sample chamber 2, the motor 14 is installed on the side of the fixed plate 13, one end of the motor 14 is connected to the second slide rod 15, the slider 16 is sleeved inside the second slide rod 15, the hydraulic cylinder 17 is movably installed under the slider 16, the support rod 18 is installed under the hydraulic cylinder 17, the rotating block 19 is movably installed at the lower part of the support rod 18, the fixed ring 20 is movably installed at the lower part of the rotating block 19, the clamping plate 21 is sleeved on the inner wall of the fixed ring 20, and the wiping cloth 22 is movably installed at the lower part of the fixed ring 20.

[0025] When in use, through the sample rack 3 and sample slot 4 arranged in the sample chamber 2, when measuring the water quality, the staff will load the cuvette matched with the sample slot 4 into the water quality to be measured, and then put the cuvette filled with water into the sample slot 4 in the sample rack 3. After being put in, the light source is emitted by the tungsten lamp 10, and the light emitted by the light source is concentrated into the excitation monochromator 11 through the reflector 9 and fills the collimator of the excitation monochromator 11. At this time, the excitation monochromator 11 becomes monochromatic light, which is irradiated on the measured sample in the sample rack 3 to generate fluorescence. The fluorescence generated by the substance is dispersed into monochromatic light by the emission monochromator 11-1, and converted into corresponding electrical signals through the photomultiplier tube. At the same time, a beam of continuous light is emitted through the tungsten lamp 10, and passes through the water quality added in the cuvette. The water will absorb some of the wavelengths, and the wavelengths that are not absorbed will be detected by the detector 8 and form a spectrum, so that the concentration of a certain substance in the water can be determined by analyzing the spectrum absorbed by the water, or by adding a fluorescent signal to the water and exciting it with a tungsten lamp, fluorescence will be generated, and the generated fluorescence will be captured and analyzed by the detector 8 to calculate the absorbance value of the water, which is then converted into the concentration of the water, so that the absorbance value of the water is proportional to the concentration of the water, so as to determine the concentration of the water, and by setting the excitation monochromator 11 and the emission monochromator 11-1, the excitation monochromator 11 can screen out a specific excitation spectrum, and the emission monochromator 11-1 can screen out a specific emission spectrum, and by the excitation monochromator 11 and the emission monochromator 1 1-1, which is used to increase the signal strength by increasing the slit width, and to increase the resolution by decreasing the slit width, thereby reducing the interference of stray light on fluorescence measurement. At the same time, it has high dispersion ability so that weak fluorescence can also be detected, thereby improving the measurement effect of the device. When measuring water quality, the staff needs to adjust the position of the sample holder 3 so that the water quality sample to be measured can be aligned with the light path. When the staff pulls the sample holder 3 outward through the pull ring 7, the water quality sample placed in the sample holder 3 is easily splashed out of the cuvette due to the large force of the staff pulling outward, causing the inside of the device to be affected by water and become wet, or when measuring other solutions, the device will be corroded due to the splashing of the solution. Through the provided wiping cloth 22, when there is water or When the solution splashes out, the motor 14 drives the slider 16 to slide left and right on the second slide bar 15 to adjust the position of the wiping cloth 22, and then the hydraulic cylinder 17 adjusts the length of the wiping cloth 22, so that the wiping cloth 22 can wipe the water or solution splashed out of the sample chamber 2 through the slider 16 and the hydraulic cylinder 17. At the same time, the sample chamber 2 can also be wiped regularly by the set wiping cloth 22, which avoids the accumulation of a lot of dust inside the sample chamber 2 during long-term use, resulting in the need for staff to clean the device regularly, thereby causing unnecessary trouble. The set wiping cloth 22 can clean the splashed water and solution while cleaning the dust, and then the rotating block 19 is rotated to rotate the wiping cloth 22.Thus, the angle of the wiping cloth 22 can be adjusted by the rotating block 19, so that the wiping cloth 22 can wipe the inside of the sample chamber 2 at different angles. After the wiping cloth 22 is used, it is easy to get wet due to the influence of water and solution. At the same time, long-term use causes the wiping cloth 22 to have a peculiar smell. Therefore, through the provided fixing ring 20 and the card plate 21, when the wiping cloth 22 is replaced, the staff rotates the fixing ring 20 to twist the fixing ring 20 out of the card plate 21. At the same time, when the wiping cloth 22 is installed, the card plate 21 is aligned with the card slot in the fixing ring 20, and the fixing ring 20 is tightened, so that the wiping cloth 22 is fixed, which has the advantage of being easy to replace the wiping cloth 22.

[0026] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the utility model involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the concept of the utility model. For example, the above features are replaced with the technical features with similar functions disclosed in the present application (but not limited to) by each other to form a technical solution.

Claims

1. A fluorescence spectrophotometer for measuring multi-parameters of water quality, comprising a spectrophotometer body (1), characterized in that: The spectrophotometer body (1) is provided with a sample chamber (2) inside, the sample chamber (2) is provided with a sample rack (3) on which a contrasting colorimetric dish is fixed, the sample rack (3) is provided with a sample slot (4) on which a contrasting colorimetric dish is placed, the sample rack (3) is fixed inside the sample chamber (2) via a bottom plate (5), first sliding bars (501) are provided on the left and right sides above the bottom plate (5), a sliding block that can slide on the first sliding bars (501) is provided at the bottom of the sample rack (3), a pull rod (6) is provided at the front of the sample rack (3), a pull ring (7) for pulling the sample rack (3) to move is provided at the front of the pull rod (6), a fixing plate (13) is provided at the top of the sample chamber (2), the fixing plate (13) is provided at the bottom of the sample chamber (2), and the fixing plate (13) is provided at the top of the sample chamber (2). 3) A motor (14) is provided on the side, a second slide bar (15) is provided inside the fixed plate (13) for sliding the slider (16), the slider (16) is driven by the motor (14) to move back and forth on the second slide bar (15), a hydraulic cylinder (17) is provided at the bottom of the slider (16) for adjusting the length of the wiping cloth (22), a support rod (18) is provided at the bottom of the hydraulic cylinder (17), a rotatable rotating block (19) is provided at the bottom of the support rod (18), a fixing ring (20) for clamping the clamping plate (21) is provided at the bottom of the rotating block (19), a wiping cloth (22) for wiping the sample chamber (2) is provided at the lower part of the clamping plate (21), and the wiping cloth (22) is a soft cloth.

2. A fluorescence spectrophotometer for multi-parameter measurement of water quality according to claim 1, characterized in that: A display (101) is provided inside the top of the spectrophotometer body (1), a control module (102) is provided below the display (101), the sample chamber (2) is fixedly mounted on the inner wall of the spectrophotometer body (1), a sample rack (3) is provided inside the sample chamber (2), and a plurality of sample slots (4) are provided inside the sample rack (3).

3. A fluorescence spectrophotometer for multi-parameter water quality measurement according to claim 1, characterized in that: The bottom plate (5) is fixedly mounted on the lower surface of the sample rack (3), the first sliding rod (501) is symmetrically mounted on the left and right ends of the top of the bottom plate (5), the pull rod (6) is connected to the middle of the front of the sample rack (3), and the pull ring (7) is mounted in front of the pull rod (6).

4. A fluorescence spectrophotometer for multi-parameter measurement of water quality according to claim 1, characterized in that: The detector (8) is installed on one side of the sample rack (3); a reflector (9) is provided on the upper side of the sample rack (3); a tungsten lamp (10) for emitting light spectrum is provided below the reflector (9); an excitation monochromator (11) is installed on the left side of the bottom of the tungsten lamp (10); an emission monochromator (11-1) is provided above the detector (8); and a wavelength knob (12) is installed on one side of the excitation monochromator (11).

5. The fluorescence spectrophotometer for multi-parameter water quality measurement according to claim 1, characterized in that: The fixed plate (13) is fixedly mounted on the upper surface of the sample chamber (2), the motor (14) is mounted on the side of the fixed plate (13), one end of the motor (14) is connected to a second slide bar (15), the slide bar (16) is sleeved inside the second slide bar (15), the hydraulic cylinder (17) is movably mounted below the slide bar (16), the support rod (18) is mounted below the hydraulic cylinder (17), the rotating block (19) is movably mounted on the lower part of the support rod (18), the fixed ring (20) is movably mounted on the lower part of the rotating block (19), the clamping plate (21) is sleeved on the inner wall of the fixed ring (20), and the wiping cloth (22) is movably mounted on the lower part of the fixed ring (20).

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