CN112649382A - Atomic absorption spectrophotometer for detecting heavy metal ions and detection method - Google Patents
Atomic absorption spectrophotometer for detecting heavy metal ions and detection method Download PDFInfo
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- CN112649382A CN112649382A CN202011379282.2A CN202011379282A CN112649382A CN 112649382 A CN112649382 A CN 112649382A CN 202011379282 A CN202011379282 A CN 202011379282A CN 112649382 A CN112649382 A CN 112649382A
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- cleaning
- atomic absorption
- combustion chamber
- pipe
- brush
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- 238000010521 absorption reaction Methods 0.000 title claims abstract description 26
- 238000001514 detection method Methods 0.000 title claims abstract description 21
- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 17
- 150000002500 ions Chemical class 0.000 title claims abstract description 12
- 238000004140 cleaning Methods 0.000 claims abstract description 117
- 238000002485 combustion reaction Methods 0.000 claims abstract description 58
- 238000007789 sealing Methods 0.000 claims abstract description 31
- 239000012535 impurity Substances 0.000 claims abstract description 17
- 239000007787 solid Substances 0.000 claims abstract description 16
- 238000000605 extraction Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 238000004458 analytical method Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 8
- 238000000889 atomisation Methods 0.000 description 7
- 230000003287 optical effect Effects 0.000 description 4
- 230000005855 radiation Effects 0.000 description 3
- XHCVSVGGSQSNRB-UHFFFAOYSA-N C#C.[O-][N+]#N Chemical group C#C.[O-][N+]#N XHCVSVGGSQSNRB-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical compound [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 206010044565 Tremor Diseases 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000000921 elemental analysis Methods 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- 230000005283 ground state Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000001272 nitrous oxide Substances 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052714 tellurium Inorganic materials 0.000 description 1
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/3103—Atomic absorption analysis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/04—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area from a small area, e.g. a tool
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/087—Cleaning containers, e.g. tanks by methods involving the use of tools, e.g. brushes, scrapers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/255—Details, e.g. use of specially adapted sources, lighting or optical systems
Abstract
The application discloses an atomic absorption spectrophotometer for detecting heavy metal ions, which relates to the technical field of water quality heavy metal detection and analysis and comprises an instrument body, wherein the instrument body comprises a combustion chamber, the combustion chamber is communicated with a cleaning port, the instrument body is also provided with a mounting frame, the mounting frame is connected with a cleaning pipe in a sliding manner, one end, close to the cleaning port, of the cleaning pipe is a suction end, one end, far away from the suction end, of the cleaning pipe is used for being connected to an air extracting device, and the cleaning pipe slides to realize that the suction end passes through the cleaning port and extends into the combustion chamber or retreats from the combustion chamber; the combustion chamber is also provided with a sealing door for sealing the cleaning cover. Through setting up clean mouthful and clean pipe to reduced the influence of solid impurity to detecting the precision, made the testing result more accurate.
Description
Technical Field
The application relates to the technical field of water quality heavy metal detection and analysis, in particular to an atomic absorption spectrophotometer for detecting heavy metal ions.
Background
An atomic absorption spectrophotometer performs elemental analysis of a metal based on the effect of atomic vapor on the absorption of characteristic radiation from a ground state of a substance. It can sensitively and reliably measure trace elements.
The atomic absorption spectrophotometer consists of a light source system, an atomization system, a light splitting system and a detection reading system. The light source system is a hollow cathode lamp and mainly provides a characteristic radiation spectrum of an element to be detected; the atomization system is used for converting the element to be detected in the sample into self atoms; the light splitting system splits out the resonance line of the element to be measured; the detection readout system converts the optical signal into an electrical signal to read out the optical density value.
There are two main types of atomization systems, namely flame atomizers and electrothermal atomizers. There are various flames, and an air-acetylene flame is currently generally used. The electric heating atomizer is generally applied to a graphite furnace atomizer, so that an atomic absorption spectrophotometer comprises a flame atomic absorption spectrophotometer and an atomic absorption spectrophotometer with a graphite furnace. The atomization temperature of the former is between 2100 ℃ and 2400 ℃, and the atomization temperature of the latter is between 2900 ℃ and 3000 ℃.
The flame atomic absorption spectrophotometer can measure more than 30 elements by using air-acetylene, and can measure more than 70 elements by using nitrous oxide-acetylene flame. Can be used for measuring heavy metal elements such as arsenic, antimony, germanium, tellurium and the like. In actual life, the heavy metal content in a water source needs to be detected.
In view of the above, when the nitrous oxide-acetylene combustion method is used for element determination, combustion is performed in the combustion chamber, and the sample is mixed with solid impurities besides gas impurities generated in the combustion process, and the part of the solid is easy to remain in the combustion chamber. When the combustion slit in the combustion bin is ignited and generates flame, the airflow in the bin is rushed to lift solid impurities, the solid impurities enter the flame and influence the flame color of the flame, and therefore the accuracy of the detection result of the device is influenced and needs to be improved.
Disclosure of Invention
In order to improve the influence of solid impurity to detecting the precision, this application provides an atomic absorption spectrophotometer for detecting heavy metal ion.
The application provides a pair of atomic absorption spectrophotometer for detecting heavy metal ion adopts following technical scheme:
an atomic absorption spectrophotometer for detecting heavy metal ions comprises an instrument body, wherein the instrument body comprises a combustion chamber, the combustion chamber is communicated with a cleaning opening, the instrument body is further provided with a mounting frame, the mounting frame is connected with a cleaning tube in a sliding mode, one end, close to the cleaning opening, of the cleaning tube is a suction end, one end, far away from the suction end, of the cleaning tube is used for being connected to an air extracting device, and the cleaning tube slides to enable the suction end to extend into the combustion chamber or withdraw from the combustion chamber through the cleaning opening; the combustion chamber is also provided with a sealing door for sealing the cleaning opening.
Through above-mentioned technical scheme, open the sealing door earlier when having solid impurity in the combustion chamber, keep away from the one end of suction end with clean pipe and communicate to air exhaust device, through sliding clean pipe towards clean mouthful and inserting the suction end to the combustion chamber in, it makes the solid impurity in the combustion chamber clean through the suction end bleeds, then withdraws from clean mouthful with clean pipe, closes sealedly to clean mouthful carrying out the lid through the sealing door. Set up clean mouthful and clean pipe to reduced the influence of solid impurity to detecting the precision, made the testing result more accurate.
Optionally, the cleaning pipe is provided with a mounting seat, the mounting seat is provided with a cleaning brush, and the cleaning brush is arranged to clean the inner wall of the combustion chamber when the suction end extends into the combustion chamber.
Through above-mentioned technical scheme, when the suction end was clean to the interior suction of combustion chamber, the cleaning brush can brush out the impurity of laminating at the combustion chamber inner wall for clean effect is better.
Optionally, the cleaning brush is rotatably connected to the mounting seat, a mounting cavity communicated with the cleaning tube is formed in the mounting seat, an impeller is arranged in the mounting cavity, and the impeller comprises an axle rotatably connected to the mounting seat and a plurality of wheel blades uniformly distributed along the axial direction of the axle; the wheel shaft is connected with the cleaning brush to drive the cleaning brush to rotate, and at least one wheel blade extends into the cleaning pipe to enable the cleaning pipe to suck air to drive the impeller to rotate.
Through above-mentioned technical scheme, when the cleaning tube bleeds, the air current in the cleaning tube can drive the impeller and rotate, and the rotation of impeller can drive the cleaning brush and rotate, cleans in to the combustion chamber through the rotation of cleaning brush for the cleaning effect of cleaning brush is better.
Optionally, the cleaning brush includes a brush rod rotatably connected to the mounting base and bristles arranged on the brush rod, the brush rod is an elastic rod, and a bias weight is arranged on the circumferential outer wall of the brush rod.
Through above-mentioned technical scheme, set up elastic rod and heavy piece, when the brush-holder stud follows the shaft and rotates, because the setting of heavy piece, make the brush-holder stud can be towards heavy piece place one side bending when rotating, make the cleaning range of cleaning brush wider, again because the rotation that the cleaning tube bleeds and drives the brush-holder stud has the unstable condition of rotational speed, thereby make the bending range of brush-holder stud indefinite, make the cleaning brush rotate the clean in-process still can form the tremble, make holistic clean effect better.
Optionally, the lateral wall of brush-holder stud is provided with a plurality of screw holes, and is a plurality of the screw hole is spiral distribution along brush-holder stud length direction, the weight piece is equipped with the double-screw bolt with screw hole complex.
Through above-mentioned technical scheme, set up screw hole and double-screw bolt for the position of balancing weight can be adjusted, can adjust the position of balancing weight according to the in service behavior of brush hair, makes the use of cleaning brush more thorough.
Optionally, the mounting rack is further provided with a driving piece for driving the cleaning pipe to move.
Through above-mentioned technical scheme, drive the removal of clean pipe through the driving piece for the removal operation of clean pipe is more convenient.
Optionally, the sealing door slides along the horizontal direction and connects in the combustion chamber, the sealing door is equipped with the hinge bar, the one end of hinge bar is articulated and the other end is articulated with clean pipe with the sealing door, just the hinge bar is towards keeping away from the glide path of clean pipe gradually near the direction of sealing door.
Through above-mentioned technical scheme, set up the hinge bar, realize opening and closing of sealing door through the removal of clean pipe for the operation of opening and shutting of sealing door is more convenient.
Optionally, the outer wall of the cleaning pipe is further provided with a filter block, and the filter block is used for plugging the cleaning opening.
Through above-mentioned technical scheme, set up the filter block, clean when the pipe is bleeding clean, the filter block can the shutoff in clean mouthful dust that has reduced in the air gets into for clean effect is better.
The application also discloses a detection method for detecting heavy metal ion's atomic absorption spectrophotometer communicates the cleaning tube to air exhaust device, before or after detecting at every turn, stretches into the combustion chamber with the suction end of cleaning tube in, makes the suction end of cleaning tube breathe in the solid impurity in with the combustion chamber clean through starting air exhaust device.
Through the technical scheme, the cleaning pipe is used for cleaning before or after each detection, so that the influence of solid impurities in the combustion bin on the detection is reduced, and the precision of the detection result is better.
In summary, the present application includes at least one of the following beneficial technical effects:
(1) by arranging the cleaning port and the cleaning pipe, the influence of solid impurities on the detection precision is reduced, and the detection result is more accurate;
(2) by arranging the elastic rod and the weight, the cleaning range of the cleaning brush is wider, and the integral cleaning effect is better;
(3) through setting up the hinge bar for the operation of opening and shutting of sealing door is more convenient.
Drawings
FIG. 1 is an overall schematic view of an embodiment;
FIG. 2 is a partial structural schematic of an embodiment;
FIG. 3 is a schematic view of an exemplary cleaning tube configuration;
FIG. 4 is a schematic partial cross-sectional view of a cleaning tube of an embodiment;
FIG. 5 is a schematic view of a structure of a cleaning brush according to an embodiment;
fig. 6 is a structural schematic view of the sealing door of the embodiment in a closed state.
Reference numerals: 1. an instrument body; 2. a combustion chamber; 3. cleaning the mouth; 4. a mounting frame; 5. cleaning the tube; 51. a suction end; 6. a sliding block; 7. a drive member; 8. a filter block; 9. a mounting seat; 10. a mounting cavity; 11. an impeller; 111. a wheel axle; 112. a blade; 12. a cleaning brush; 121. a brush bar; 122. brushing; 13. a threaded hole; 14. a stud; 15. a balancing weight; 16. a sealing door; 17. a hinged lever.
Detailed Description
The present application is described in further detail below with reference to figures 1-6.
The embodiment of the application discloses an atomic absorption spectrophotometer for detecting heavy metal ions, as shown in figure 1, including instrument body 1, instrument body 1 includes light source system, atomization system, spectroscopic system and detection reading system. The light source system is a hollow cathode lamp and mainly provides a characteristic radiation spectrum of an element to be detected; the atomization system selects a flame atomizer and is used for converting the element to be detected in the sample into self atoms; the light splitting system splits out the resonance line of the element to be measured; the detection readout system converts the optical signal into an electrical signal to read out the optical density value.
As shown in fig. 2, the flame atomizer comprises a combustion chamber 2, nitrous oxide and acetylene are respectively introduced into the combustion chamber 2, and then the combustion head is used for igniting the sample to atomize the heavy metals in the sample.
Clean mouthful 3 have been seted up at the lateral wall of combustion chamber 2, and clean mouthful 3 is squarely, clean mouthful 3 and the inside intercommunication of combustion chamber 2. The instrument body 1 is further fixed with a mounting rack 4, and the mounting rack 4 is positioned on one side of the combustion chamber 2, which is provided with the cleaning port 3. Be equipped with clean pipe 5 on mounting bracket 4, be fixed with the sliding block 6 at the lower extreme of clean pipe 5, sliding block 6 keeps away from clean mouthful 3 setting, and sliding block 6 slides through the spout and connects in mounting bracket 4, and clean pipe 5 realizes along the horizontal direction and slides along the direction that is close to or keeps away from clean mouthful 3 through the cooperation of sliding block 6 and slide rail and connects in mounting bracket 4 up end. The upper end surface of the mounting frame 4 is also fixed with a driving part 7, the driving part 7 is a driving cylinder, and a piston rod of the driving part 7 is fixedly connected with the sliding block 6 so as to drive the cleaning pipe 5 to move.
Referring to fig. 2 and 3, a suction end 51 is arranged at one end of the cleaning tube 5 close to the cleaning opening 3, a hose is connected to one end of the cleaning tube 5 far from the suction end 51, and one end of the hose far from the cleaning tube 5 is used for being communicated to an air extraction device, which is generally an exhaust fan. The outer wall of the cleaning pipe 5 is also fixed with a filter block 8, the filter block 8 is a sponge block, and the filter block 8 is used for plugging the cleaning opening 3.
When the piston rod of the driving piece 7 extends out, the cleaning tube 5 slides towards the direction of the cleaning opening 3 and inserts the suction end 51 into the combustion chamber 2, at the moment, the filter block 8 blocks the cleaning opening 3, and when the suction end 51 extracts air to clean solid impurities in the combustion chamber 2 through suction, the filter block 8 filters air entering the combustion chamber 2 through the cleaning opening 3 from the outside. When the piston rod of the driver 7 is retracted, the cleaning tube 5 is withdrawn from the cleaning opening 3.
As shown in fig. 4, a mounting seat 9 is fixed on the outer wall of the cleaning tube 5, and the mounting seat 9 is arranged near the suction end 51. The mounting seat 9 is internally provided with a mounting cavity 10 communicated with the internal channel of the cleaning tube 5. An impeller 11 is arranged in the mounting cavity 10, and the impeller 11 comprises a hub 111 and a plurality of vanes 112. Wherein the axle 111 is rotatably connected to the mounting seat 9, the rotation axis of the axle 111 is perpendicular to the extending direction of the inner channel of the cleaning tube 5, and both axial ends of the axle 111 penetrate out of the mounting seat 9. A plurality of vanes 112 are fixed to the outer side wall of the hub 111 and are uniformly distributed along the circumferential direction of the axis of the hub 111. At any time during the rotation of the impeller 11, at least one blade 112 is kept protruding into the internal passage of the cleaning tube 5, so that when the suction device draws the cleaning tube 5, the impeller 11 is driven to rotate by the air flow in the cleaning tube 5.
As shown in fig. 3 and 5, the cleaning brushes 12 are disposed at both axial ends of the axle 111, and the cleaning brushes 12 are rotatably connected with the mounting seat 9 through the axle 111. The cleaning brush 12 comprises a brush rod 121 and a plurality of bristles 122, wherein the bristles 122 are circumferentially distributed on the outer wall of the brush rod 121. The brush bar 121 is an elastic bar, such as a rubber bar. The brush rod 121 is coaxially fixed on the axle 111, and in order to facilitate replacement of the cleaning brush 12, a threaded section is arranged at the end of the brush rod 121 close to the axle 111 and is in threaded connection with the axle 111, and the brush rod 121 and the axle 111 are fixed by screwing the threaded section. A plurality of threaded holes 13 are opened on the outer side wall of the brush rod 121, and each threaded hole 13 is spirally distributed along the outer wall of the brush rod 121. One of the threaded holes 13 is in threaded connection with a stud 14, the stud 14 is fixed with a balancing weight 15, and the balancing weight 15 is an iron block.
Referring to fig. 2 and 6, a sealing door 16 is further disposed on an outer wall of the combustion chamber 2, and the sealing door 16 is slidably connected to the combustion chamber 2 in a horizontal direction by cooperation of a guide rail and a guide groove. The sealing door 16 is provided with a hinge rod 17, one end of the hinge rod 17 is hinged with the sealing door 16, and the other end is hinged with the cleaning tube 5. The hinge axes at the two ends of the hinge rod 17 are both vertical, and the hinge axes at the two ends of the hinge rod 17 are a sliding path gradually far away from the cleaning tube 5 towards the direction close to the sealing door 16 along the connecting line of the horizontal direction. In practice, the hinge rod 17 is arranged as a bent rod in order to avoid that the hinge rod 17 is turned over to press the filter block 8. When clean pipe 5 withdraws from combustion chamber 2 in, sealing door 16 lid fits on clean mouthful 3 and seals clean mouthful 3 department, when the piston rod stretches out and makes clean pipe 5 be close to clean mouthful 3 direction and stretch out, hinged rod 17 can drive sealing door 16 and open.
The working principle of the embodiment is as follows:
when needs are cleaned in 2 combustion chambers, the piston rod of driving piece 7 stretches out, slide earlier sealing door 16 through the transmission of hinge rod 17 and open, then all enter into 2 combustion chambers through clean mouthful 3 with the suction end 51 and the cleaning brush 12 of cleaning tube 5, this thing filter block 8 shutoff is in clean mouthful 3, then drive 5 suction of cleaning tube through air exhaust device, and simultaneously, the air current that 5 suction of cleaning tube formed drives impeller 11 and rotates and make cleaning brush 12 rotate and clean the combustor inner wall, make the solid impurity that adheres 2 inner walls of combustion chambers raised and through the suction end 51 suction cleanness, make clean effect better.
After the cleaning is finished, the air extraction device is closed, the driving piece 7 drives the suction end 51 and the cleaning brush 12 to withdraw from the combustion chamber 2, and the cleaning pipe 5 continues to move until the sealing door seals the cleaning opening 3 to realize sealing.
The embodiment of the application also discloses a detection method for detecting heavy metal ion's atomic absorption spectrophotometer, in its operating procedure, communicate clean pipe 5 to air exhaust device, before normal detection operation or after detection operation finishes, stretch into combustion chamber 2 through operation driving piece 7 with the suction end 51 of exhaust pipe in, then start air exhaust device, the rotation of cooperation cleaning brush 12 is bled through clean pipe 5 suction end 51 is cleaned combustion chamber 2, the influence of solid impurity to the detection in the combustion chamber 2 has been reduced, make the precision of testing result better.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (9)
1. An atomic absorption spectrophotometer for detecting heavy metal ions, characterized in that: the instrument comprises an instrument body (1), wherein the instrument body (1) comprises a combustion bin (2), the combustion bin (2) is communicated with a cleaning opening (3), the instrument body (1) is further provided with a mounting frame (4), the mounting frame (4) is connected with a cleaning pipe (5) in a sliding manner, one end, close to the cleaning opening (3), of the cleaning pipe (5) is a suction end (51), one end, far away from the suction end (51), of the cleaning pipe (5) is used for being connected to an air extraction device, and the cleaning pipe (5) slides to realize that the suction end (51) passes through the cleaning opening (3) and extends into the combustion bin (2) or exits from the combustion bin (2); the combustion chamber (2) is also provided with a sealing door (16) for covering and sealing the cleaning opening (3).
2. The atomic absorption spectrophotometer according to claim 1, wherein: cleaning tube (5) are equipped with mount pad (9), mount pad (9) are equipped with cleaning brush (12), cleaning brush (12) set up to clean combustion chamber (2) inner wall when suction end (51) stretches into combustion chamber (2).
3. The atomic absorption spectrophotometer according to claim 2, wherein: the cleaning brush (12) is rotatably connected to the mounting seat (9), a mounting cavity (10) communicated with the inside of the cleaning pipe (5) is formed in the mounting seat (9), an impeller (11) is arranged in the mounting cavity (10), and the impeller (11) comprises an axle (111) rotatably connected to the mounting seat (9) and a plurality of impeller blades (112) uniformly distributed along the axial direction of the axle (111); the wheel shaft (111) is connected with the cleaning brush (12) to drive the cleaning brush (12) to rotate, and at least one wheel blade (112) extends into the cleaning pipe (5) to enable the cleaning pipe (5) to suck air to drive the impeller (11) to rotate.
4. The atomic absorption spectrophotometer according to claim 3, wherein: the cleaning brush (12) comprises a brush rod (121) rotatably connected to the mounting seat (9) and bristles (122) arranged on the brush rod (121), the brush rod (121) is an elastic rod, and a weight is arranged on the circumferential outer wall of the brush rod (121).
5. The atomic absorption spectrophotometer according to claim 4, wherein: the outer side wall of the brush rod (121) is provided with a plurality of threaded holes (13), the plurality of threaded holes (13) are spirally distributed along the length direction of the brush rod (121), and the weight is provided with a stud (14) matched with the threaded holes (13).
6. The atomic absorption spectrophotometer according to claim 1, wherein: the mounting rack (4) is also provided with a driving piece (7) for driving the cleaning pipe (5) to move.
7. The atomic absorption spectrophotometer according to claim 6, wherein: sealing door (16) slide along the horizontal direction and connect in combustion chamber (2), sealing door (16) are equipped with hinge bar (17), the one end and the sealing door (16) of hinge bar (17) are articulated and the other end is articulated with clean pipe (5), just the line of hinge bar (17) both ends articulated axis is kept away from the slip route of clean pipe (5) gradually towards the direction that is close to sealing door (16).
8. The atomic absorption spectrophotometer according to claim 7, wherein: the outer wall of the cleaning pipe (5) is further provided with a filter block (8), and the filter block (8) is used for plugging the cleaning opening (3).
9. A detection method of an atomic absorption spectrophotometer for detecting heavy metal ions is characterized in that: the cleaning pipe (5) is communicated to an air extraction device, before or after each detection, the suction end (51) of the cleaning pipe (5) extends into the combustion bin (2), and the suction end (51) of the cleaning pipe (5) is sucked by starting the air extraction device to clean the solid impurities in the combustion bin (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011379282.2A CN112649382A (en) | 2020-11-30 | 2020-11-30 | Atomic absorption spectrophotometer for detecting heavy metal ions and detection method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011379282.2A CN112649382A (en) | 2020-11-30 | 2020-11-30 | Atomic absorption spectrophotometer for detecting heavy metal ions and detection method |
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| Publication Number | Publication Date |
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| CN112649382A true CN112649382A (en) | 2021-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011379282.2A Pending CN112649382A (en) | 2020-11-30 | 2020-11-30 | Atomic absorption spectrophotometer for detecting heavy metal ions and detection method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113959891A (en) * | 2021-10-23 | 2022-01-21 | 浙江必利夫检测科技有限公司 | Be applied to occupational health short-term test instrument |
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| CN113959891B (en) * | 2021-10-23 | 2024-04-12 | 浙江必利夫检测科技有限公司 | Be applied to occupational health short-term test instrument |
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