CN209640208U - A kind of sampling Graphite Furnace Atomic Absorption spectrophotometer - Google Patents
A kind of sampling Graphite Furnace Atomic Absorption spectrophotometer Download PDFInfo
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- CN209640208U CN209640208U CN201920200407.7U CN201920200407U CN209640208U CN 209640208 U CN209640208 U CN 209640208U CN 201920200407 U CN201920200407 U CN 201920200407U CN 209640208 U CN209640208 U CN 209640208U
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- pipe
- gas
- graphite
- guide tube
- casing
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Abstract
The utility model discloses a kind of sampling Graphite Furnace Atomic Absorption spectrophotometer, including cabinet, hollow cathode lamp, graphite-pipe and monochromator, the both ends of the graphite-pipe are equipped with first sleeve, the second casing is fixedly connected on the outside of the first sleeve, the outer sheath of the first sleeve and the second casing is equipped with cooling tube, air inlet is offered on the side wall of second casing, the interior side of the cabinet is equipped with argon gas storage tank, the argon gas storage tank is connected with gas-guide tube one, the gas-guide tube one is equipped with flow control valve, air pump and solenoid valve one, the gas-guide tube one is connected with gas-guide tube two, the gas-guide tube two is conducted with air inlet.The utility model has the beneficial effects that argon gas is along the both ends of graphite-pipe, the heart flows thereto; can play the role of that graphite-pipe is protected no longer not to be oxidized and remove effectively the generated matrix steam in dry and podzolic process by high-temperature oxydation, cleaning graphite-pipe and atomizing ground state atom.
Description
Technical field
The utility model discloses a kind of sampling Graphite Furnace Atomic Absorption spectrophotometer, belongs to analysis and testing equipment technical field.
Background technique
Sampling Graphite Furnace Atomic Absorption spectrophotometer is usually by hollow cathode lamp, graphite-pipe and monochromator and photomultiplier tube
Composition, graphite-pipe is an electric heater, holds sample using electric energy heating, makes up to high temperature to realize quilt in sample solution
It surveys element and forms ground state atom, since graphite-pipe carries out heating the state that reaches a high temperature in existing photometer, be easy to cause
Atomizing atom is oxidized or graphite-pipe is ablated, while in the prior art since argon gas is passed through uninterrupted observation not
It is convenient, when argon gas is filled with it is excessive when, it is possible to influence testing result, can also make intraductal atmospheric pressure excessive and cause danger.
Utility model content
The purpose of this utility model is just providing a kind of sampling Graphite Furnace Atomic Absorption light splitting light in order to solve the problem above-mentioned
Degree meter.
The utility model is achieved through the following technical solutions above-mentioned purpose, a kind of sampling Graphite Furnace Atomic Absorption spectrophotometric
Meter, including cabinet, hollow cathode lamp, graphite-pipe and monochromator, the central axes position of the hollow cathode lamp, graphite-pipe and monochromator
In on same straight line, injection port is equipped among the upper end of the graphite-pipe, the both ends of the graphite-pipe are equipped with first sleeve, institute
It states and is fixedly connected with the second casing on the outside of first sleeve, the outer sheath of the first sleeve and the second casing is equipped with cooling tube,
The upper and lower ends of the cooling tube are respectively equipped with water outlet and water inlet, are fixedly installed with quartz window in second casing, institute
It states and offers air inlet on the side wall of the second casing, the interior side of the cabinet is equipped with argon gas storage tank, the argon gas storage
Tank is connected with gas-guide tube one, and the gas-guide tube one is equipped with flow control valve, air pump and solenoid valve one, and the gas-guide tube one connects
There is gas-guide tube two, the gas-guide tube two is conducted with air inlet.
Preferably, the lower section of the cooling tube is equipped with rubber-covered block, and the lower section of the rubber-covered block is equipped with supporting table,
Stabilizer blade is fixedly connected with below the supporting table, the stabilizer blade is fixedly mounted on the inner bottom surface of cabinet.
Preferably, detection warning device, the detection warning device packet are equipped between the gas-guide tube one and gas-guide tube two
Shell, the housing vertical installation are included, the bottom end side of the shell is equipped with air inlet pipe, and the air inlet pipe is led with one phase of gas-guide tube
Logical, the middle part side of the shell is equipped with escape pipe, and the escape pipe is conducted with gas-guide tube two, and the inner top surface of the shell is set
There is pressure sensor, the top for being internally located at escape pipe of the shell is equipped with the floating ball for detecting air pressure size, described floating
Ball is equipped with the connecting rod for squeeze pressure sensor, and the lower section of the floating ball is equipped with the support plate for being used to support floating ball, described
Support plate is equipped with the through slot for making floating ball minimum point be lower than support plate bottom surface.
Preferably, bypass duct, the shunt valve are connected between air pump and solenoid valve one on the gas-guide tube one
The other end in road is conducted with gas-guide tube two, and the bypass duct is equipped with solenoid valve two.
Preferably, the cabinet, which is located at right above injection port, is hinged with chamber door, is equipped with handle on the outside of the chamber door.
Preferably, the lower end between two first sleeves is formed with gas outlet one, and the graphite-pipe is located at gas outlet
One top is equipped with gas outlet two.
Compared with prior art, the utility model has the beneficial effects that
Test fluid to be checked is injected into graphite-pipe by injection port using injection device, graphite-pipe is fixed on two electrodes
Between, first lead to low current, in the drying that 100 DEG C or so carry out test fluid to be checked to remove solvent and moisture, then 100~
1800 DEG C are ashed removing matrix or other elements, then heat up and carry out the atomization of test fluid to be checked, logical in graphite-pipe
When electric heating, air pump starts simultaneously, and argon gas is imported into graphite-pipe, so that argon gas is along the both ends of graphite-pipe heart stream thereto
It is dynamic, the work for protecting graphite-pipe not to be oxidized no longer by high-temperature oxydation, cleaning graphite-pipe and atomizing ground state atom can be played
With, and the generated matrix steam in dry and podzolic process can be removed effectively, matrix steam is discharged from injection port, together
When ashing the stage, stop ventilation, to extend mean residence time of the atom in uptake zone, so as not to atomic vapour carry out
Dilution, hollow cathode lamp can emit light beam, and light beam is absorbed by the ground state atom of element to be measured in steam, observe emission spectrum quilt
The degree of decrease, and then the content of element to be measured in sample is acquired, by the way that cooling tube is arranged, to make graphite-pipe analyze it every time
After can be rapidly decreased to room temperature, be passed through the water lower than 20 DEG C to cooling graphite-pipe in the water inlet of cooling tube, play good guarantor
Shield effect.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of sampling Graphite Furnace Atomic Absorption spectrophotometer of the utility model；
Fig. 2 is the structural representation that warning device is detected in a kind of sampling Graphite Furnace Atomic Absorption spectrophotometer of the utility model
Figure.
Appended drawing reference: 1, cabinet；2, hollow cathode lamp；3, gas-guide tube two；4, air inlet；5, chamber door；6, graphite-pipe；7, into
Sample mouth；8, handle；9, water outlet；10, first sleeve；11, cooling tube；12, the second casing；13, monochromator；14, rubber-covered
Block；15, water inlet；16, gas outlet one；17, supporting table；18, stabilizer blade；19, quartz window；20, solenoid valve two；21, bypass duct；
22, argon gas storage tank；23, flow control valve；24, air pump；25, solenoid valve one；26, gas-guide tube one；27, warning device is detected；
28, shell；29, escape pipe；30, pressure sensor；31, connecting rod；32, floating ball；33, support plate；34, air inlet pipe.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
It please refers to shown in Fig. 1 and Fig. 2, a kind of sampling Graphite Furnace Atomic Absorption spectrophotometer, including cabinet 1, hollow cathode lamp
2, graphite-pipe 6 and monochromator 13, the central axes of hollow cathode lamp 2, graphite-pipe 6 and monochromator 13 are located along the same line, graphite
Injection port 7 is equipped among the upper end of pipe 6, the both ends of graphite-pipe 6 are equipped with first sleeve 10, and the outside of first sleeve 10 is fixed to be connected
It is connected to the second casing 12, the outer sheath of first sleeve 10 and the second casing 12 is equipped with cooling tube 11, the upper and lower ends of cooling tube 11
It is respectively equipped with water outlet 9 and water inlet 15, quartz window 19 is fixedly installed in the second casing 12, is opened on the side wall of the second casing 12
Equipped with air inlet 4, the interior side of cabinet 1 is equipped with argon gas storage tank 22, and argon gas storage tank 22 is connected with gas-guide tube 1, air guide
Pipe 1 is equipped with flow control valve 23, air pump 24 and solenoid valve 1, and gas-guide tube 1 is connected with gas-guide tube 23, gas-guide tube
23 are conducted with air inlet 4.
According to the above technical scheme: test fluid to be checked is injected into graphite-pipe 6 by injection port 7 using injection device,
Graphite-pipe 6 is fixed between two electrodes, first leads to low current, and the drying of test fluid to be checked is carried out at 100 DEG C or so to remove
Then solvent and moisture are ashed removing matrix or other elements at 100~1800 DEG C, then heat up and carry out test to be checked
The atomization of liquid, in 6 electrified regulation of graphite-pipe, air pump 24 starts simultaneously, and argon gas is imported into graphite-pipe 6, so that argon gas
Along the both ends of graphite-pipe 6, the heart flows thereto, can play and protect graphite-pipe 6 not by high-temperature oxydation, cleaning graphite-pipe 6 and atom
The effect that the ground state atom of change is no longer oxidized, and the generated matrix in dry and podzolic process can be removed effectively and steamed
Matrix steam is discharged vapour from injection port 7, while in the ashing stage, stopping ventilation, flat in uptake zone to extend atom
The equal residence time, in order to avoid being diluted to atomic vapour, hollow cathode lamp 2 can emit light beam, and light beam is by element to be measured in steam
Ground state atom absorbed, the degree that is weakened of observation emission spectrum, and then acquire the content of element to be measured in sample, by setting
Cooling tube 11 is set, to make graphite-pipe 6 that can be rapidly decreased to room temperature after each analysis, is passed through in the water inlet 15 of cooling tube 11 low
In 20 DEG C of water to cooling graphite-pipe 6, play a very good protection.
The lower section of cooling tube 11 is equipped with rubber-covered block 14, and the lower section of rubber-covered block 14 is equipped with supporting table 17, supporting table
17 lower section is fixedly connected with stabilizer blade 18, and stabilizer blade 18 is fixedly mounted on the inner bottom surface of cabinet 1.
According to the above technical scheme: by the way that rubber-covered block 14 is arranged, being avoided that the electrode connecting with graphite-pipe 6 to entirety
Equipment impacts, and improves safety, by setting supporting table 17 and stabilizer blade 18, can play a supporting role to graphite-pipe 6, convenient
Installation.
Detection warning device 27 is equipped between gas-guide tube 1 and gas-guide tube 23, detection warning device 27 includes shell 28,
The shell 28 is vertically-mounted, and the bottom end side of shell 28 is equipped with air inlet pipe 34, and air inlet pipe 34 is conducted with gas-guide tube 1, outside
The middle part side of shell 28 is equipped with escape pipe 29, and escape pipe 29 is conducted with gas-guide tube 23, and the inner top surface of shell 28 is passed equipped with pressure
Sensor 30, the top for being internally located at escape pipe 29 of shell 28 are equipped with the floating ball 32 for detecting air pressure size, set on floating ball 32
There is the connecting rod 31 for squeeze pressure sensor 30, the lower section of floating ball 32 is equipped with the support plate 33 for being used to support floating ball 32, support
Plate 33 is equipped with the through slot for making 32 minimum point of floating ball be lower than 33 bottom surface of support plate.
According to the above technical scheme: when argon gas imports from air inlet pipe 34, when the argon gas of importing is excessive, inside shell 28
Air pressure increases, and floating ball 32 can be made to increase, and when floating ball 32 rises to certain position, connecting rod 31 touches pressure sensor 30,
The compression of pressure sensor 30 can issue pressure signal, so that circuit is connected, the alarm lamp or buzzer being attached thereto start to alarm,
To remind testing staff to improve security performance by the size of the adjusting air-flow of flow control valve 23.
Be connected with bypass duct 21 on gas-guide tube 1 between air pump 24 and solenoid valve 1, bypass duct 21 it is another
One end is conducted with gas-guide tube 23, and the bypass duct 21 is equipped with solenoid valve 2 20.
According to the above technical scheme: by the way that bypass duct 21 is arranged, when gas-guide tube 1 or detection warning device 27 go out
When existing failure, solenoid valve 1 is closed, opens solenoid valve 2 20, so that bypass duct 21 is connected, is not influencing air guiding function
Facilitate detection and maintenance simultaneously.
The surface that cabinet 1 is located at injection port 7 is hinged with chamber door 5, and the outside of chamber door 5 is equipped with handle 8.
According to the above technical scheme: by the way that chamber door 5 is arranged, when needing to inject test fluid to be checked, opening case using handle 8
Door 5, facilitates injection, when progress is actually detected or when not in use, lid mould assembling door 5 can play a very good protection.
Lower end between two first sleeves 10 is formed with gas outlet 1, and graphite-pipe 6 is located at the top of gas outlet 1
Equipped with gas outlet two.
According to the above technical scheme: by setting gas outlet 1 and gas outlet two, allowing argon gas from gas outlet one
16 and gas outlet two at export, avoid air pressure in graphite-pipe 6 excessive.
In the description of the present invention, it should be understood that term " on ", "lower", "front", "rear", "left", "right",
The orientation or positional relationship of the instructions such as "top", "bottom", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only
For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific
Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.
It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and
And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new
The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing for the equivalent requirements of the claims will be fallen in
All changes in justice and range are embraced therein.It should not treat any reference in the claims as limiting
Related claim.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (6)
1. a kind of sampling Graphite Furnace Atomic Absorption spectrophotometer, including cabinet (1), hollow cathode lamp (2), graphite-pipe (6) and monochrome
Device (13), it is characterised in that: the central axes of the hollow cathode lamp (2), graphite-pipe (6) and monochromator (13) are located at same straight line
On, injection port (7) are equipped among the upper end of the graphite-pipe (6), the both ends of the graphite-pipe (6) are equipped with first sleeve
(10), it is fixedly connected with the second casing (12) on the outside of the first sleeve (10), the first sleeve (10) and the second casing
(12) outer sheath is equipped with cooling tube (11), and the upper and lower ends of the cooling tube (11) are respectively equipped with water outlet (9) and water inlet
(15), is fixedly installed with quartz window (19) in second casing (12), offered on the side wall of second casing (12) into
The interior side of port (4), the cabinet (1) is equipped with argon gas storage tank (22), and the argon gas storage tank (22) is connected with air guide
Pipe one (26), the gas-guide tube one (26) are equipped with flow control valve (23), air pump (24) and solenoid valve one (25), the air guide
Pipe one (26) is connected with gas-guide tube two (3), and the gas-guide tube two (3) is conducted with air inlet (4).
2. a kind of sampling Graphite Furnace Atomic Absorption spectrophotometer according to claim 1, it is characterised in that: the cooling tube
(11) lower section is equipped with rubber-covered block (14), and the lower section of the rubber-covered block (14) is equipped with supporting table (17), the support
It is fixedly connected with below platform (17) stabilizer blade (18), the stabilizer blade (18) is fixedly mounted on the inner bottom surface of cabinet (1).
3. a kind of sampling Graphite Furnace Atomic Absorption spectrophotometer according to claim 1, it is characterised in that: the gas-guide tube one
(26) detection warning device (27) is equipped between gas-guide tube two (3), the detection warning device (27) includes shell (28), institute
State that shell (28) is vertically-mounted, the bottom end side of the shell (28) is equipped with air inlet pipe (34), the air inlet pipe (34) and air guide
Pipe one (26) is conducted, and the middle part side of the shell (28) is equipped with escape pipe (29), the escape pipe (29) and gas-guide tube two
(3) it is conducted, the inner top surface of the shell (28) is equipped with pressure sensor (30), and the shell (28) is internally located at escape pipe
(29) top is equipped with the floating ball (32) for detecting air pressure size, and the floating ball (32), which is equipped with, is used for squeeze pressure sensor
(30) connecting rod (31), the lower section of the floating ball (32) are equipped with the support plate (33) for being used to support floating ball (32), the support plate
(33) it is equipped with the through slot for making floating ball (32) minimum point be lower than support plate (33) bottom surface.
4. a kind of sampling Graphite Furnace Atomic Absorption spectrophotometer according to claim 1, it is characterised in that: the gas-guide tube one
(26) bypass duct (21) are connected between air pump (24) and solenoid valve one (25) on, the bypass duct (21) it is another
End is conducted with gas-guide tube two (3), and the bypass duct (21) is equipped with solenoid valve two (20).
5. a kind of sampling Graphite Furnace Atomic Absorption spectrophotometer according to claim 1, it is characterised in that: the cabinet (1)
It is hinged with right above injection port (7) chamber door (5), handle (8) is installed on the outside of the chamber door (5).
6. a kind of sampling Graphite Furnace Atomic Absorption spectrophotometer according to claim 1, it is characterised in that: two described first
Lower end between casing (10) is formed with gas outlet one (16), and the top that the graphite-pipe (6) is located at gas outlet one (16) is equipped with
Gas outlet two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920200407.7U CN209640208U (en) | 2019-02-15 | 2019-02-15 | A kind of sampling Graphite Furnace Atomic Absorption spectrophotometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920200407.7U CN209640208U (en) | 2019-02-15 | 2019-02-15 | A kind of sampling Graphite Furnace Atomic Absorption spectrophotometer |
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| CN209640208U true CN209640208U (en) | 2019-11-15 |
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| CN201920200407.7U Expired - Fee Related CN209640208U (en) | 2019-02-15 | 2019-02-15 | A kind of sampling Graphite Furnace Atomic Absorption spectrophotometer |
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| CN (1) | CN209640208U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113899666A (en) * | 2021-09-17 | 2022-01-07 | 江苏天瑞仪器股份有限公司 | Particulate matter real-time measuring device based on beta ray absorption/light scattering principle |
| CN113899665A (en) * | 2021-09-17 | 2022-01-07 | 江苏天瑞仪器股份有限公司 | Particulate matter real-time measuring method based on beta-ray absorption/light scattering principle |
-
2019
- 2019-02-15 CN CN201920200407.7U patent/CN209640208U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113899666A (en) * | 2021-09-17 | 2022-01-07 | 江苏天瑞仪器股份有限公司 | Particulate matter real-time measuring device based on beta ray absorption/light scattering principle |
| CN113899665A (en) * | 2021-09-17 | 2022-01-07 | 江苏天瑞仪器股份有限公司 | Particulate matter real-time measuring method based on beta-ray absorption/light scattering principle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191115 Termination date: 20210215 |