CN108956260A - One kind catching up with acid system special graphite furnace system - Google Patents
One kind catching up with acid system special graphite furnace system Download PDFInfo
- Publication number
- CN108956260A CN108956260A CN201810790980.8A CN201810790980A CN108956260A CN 108956260 A CN108956260 A CN 108956260A CN 201810790980 A CN201810790980 A CN 201810790980A CN 108956260 A CN108956260 A CN 108956260A
- Authority
- CN
- China
- Prior art keywords
- heating
- layer
- graphite furnace
- acid
- pore
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
The present invention relates to one kind to catch up with acid system special graphite furnace system, including circular graphite furnace, collector and controller；There is N number of pore inside circular graphite furnace, it is placed in pore and catches up with acid tube, there are 3 cyclic annular heating sheets on the hole wall of each pore, respectively upper layer heating sheet, middle layer heating sheet, lower layer's heating sheet, the cyclic annular heating sheet of same layer, which is adopted, to be connected serially, form upper layer heating layer, middle layer heating layer and lower layer's heating layer, middle layer heating layer and lower layer heating layer are respectively connected the different resistance of a resistivity, temperature sensor is set on the inner wall of pore, and annular-heating piece is connected with temperature sensor by conducting wire；There is N number of nozzle at the top of collector, collector bottom connects an exhaust tube, is pierced by from the bottom of circular graphite furnace, connect with acid system aftertreatment device is caught up with by conduit airtight connection with the pipe close of acid tube is caught up with.Present invention employs circulating types, and three layers of electric hot plate independently to be divided to realize differential heating to each pore, makes that acid tube is caught up with to be heated evenly.
Description
Technical field
The present invention relates to catch up with sour field more particularly to one kind to catch up with acid system special graphite furnace system.
Background technique
Catching up with acid is in now common Sample Pretreatment Technique Used, and existing to catch up with acid system structure simple, technology maturation is being examined
Industry is surveyed to be used widely.Tradition catches up with acid system mainly by heating device, condensing unit, acid gas and recyclable device and vacuum
What the components such as pump were made up of together corresponding placed in series.Heating device generallys use graphite furnace.Traditional graphite furnace is
Rectangular shape arranges several sample pores thereon, and bottom is provided with electric hot plate, and the sample that acid need to be caught up with to handle is placed in pore
Heating generates acid vapor, and acid vapor enters subsequent processing link by conduit, is finally completed and catches up with sour process.
The existing graphite furnace for catching up with acid system to use has the disadvantage that
1) conventional graphite furnace is rectangular, because of surrounding edge rapid heat dissipation, causes the pore temperature of graphite furnace surrounding lower, in
It is higher that center portion is in charge of hole temperature, and pore heating is not unevenly high so as to cause sample treatment collimation, influences detection accuracy；
2) conventional graphite furnace uses bottom-heated, and bottom temp is high in pore, and pore mouth temperature is low, and the upper and lower temperature of pore is not
Unanimously, cause to catch up with acid not enough thoroughly to influence detection accuracy.
Summary of the invention
It is an object of the present invention in place of solving the above deficiencies in the existing technologies.
To achieve the above object, the present invention provides one kind and catches up with acid system special graphite furnace system, including circular graphite furnace,
Collector and controller；Circular graphite furnace is internally provided with N number of pore, places in pore and catches up with acid tube, the hole wall of each pore
On be provided with 3 cyclic annular heating sheets, 3 cyclic annular heating sheets include upper layer heating sheet, middle layer heating sheet, lower layer's heating sheet, it is N number of on
Layer heating sheet is composed in series upper layer heating layer, and N number of middle layer heating sheet is composed in series middle layer heating layer, N number of lower layer's heating sheet series connection
Form lower layer's heating layer, wherein upper layer heating layer, middle layer heating layer and lower layer's heating layer are in parallel, and middle layer heating layer and lower layer add
Thermosphere is respectively connected the different resistance of a resistivity, and temperature sensor, annular-heating piece and temperature are provided on the inner wall of pore
Sensor is spent to be connected by conducting wire；There is N number of nozzle at the top of collector, nozzle passes through conduit airtight connection with the pipe close of acid tube is caught up with,
Collector bottom connects an exhaust tube, is pierced by from the bottom of circular graphite furnace, connect with acid system aftertreatment device is caught up with,
Wherein, the range of N is 12-32；The controller is used to adjust the size of the calorific value of annular-heating piece.
Preferably, controller include at least single-chip microcontroller, single-chip microcontroller receive temperature sensor transmission temperature value, and according to
Temperature value adjusts the size of the calorific value of annular-heating piece.
It is further preferred that adjusting the size of the calorific value of annular-heating piece according to temperature value, specifically include: controller root
According to temperature value, the size of the calorific value of annular-heating piece is adjusted by adjusting the size of output voltage.
Preferably, collector bottom is inverted conical shape.
Preferably, controller further includes button and LED screen.
Preferably, catch up with the overall diameter of acid tube than the interior diameter of pore than small 2-5mm.
Preferably, the overall diameter range for catching up with acid tube is 2-5 centimetres.
Beneficial effects of the present invention: (1) product of the present invention uses circulating type and independently divides three layers of electric hot plate to each pore
It realizes differential heating, makes that acid tube is caught up with to be heated evenly, the temperature difference is less than ± 1 DEG C between hole, and the temperature difference is ± 2 DEG C between conventional holes.
(2) by special algorithm, basis catches up with acid tube inner diameter size in each layer of heating sheet route, matches different resistance, real
It is now same to catch up with bottom and the nozzle top temperature difference ± 1 DEG C in acid tube inner orifice, catch up with sour effect to be better than the graphite furnace of traditional bottom-heated.
(3) collector is set in the centre of ring-shaped graphite furnace, it is compact-sized, more reasonably utilize space.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram for catching up with acid system special graphite furnace system provided in an embodiment of the present invention；
Fig. 2 is the circuit connection diagram of controller provided in an embodiment of the present invention and annular-heating piece.
Specific embodiment
With reference to the accompanying drawings and examples, technical scheme of the present invention will be described in further detail.
Such as Fig. 1-2, the present invention provides one kind and catches up with acid system special graphite furnace system, including circular graphite furnace 4, collector
12 and controller 2；Circular graphite furnace 4 is internally provided with N number of pore 7, places in pore and catches up with acid tube 13, the hole of each pore 7
3 cyclic annular heating sheets 5, respectively upper layer heating sheet 51, middle layer heating sheet 52, lower layer's heating sheet 53, N number of upper layer are provided on wall
Heating sheet 51 is composed in series upper layer heating layer, and N number of middle layer heating sheet 52 is composed in series middle layer heating layer, N number of lower layer's heating sheet 53
It is composed in series lower layer's heating layer, wherein upper layer heating layer, middle layer heating layer and lower layer's heating layer are in parallel, and middle layer heating layer is under
Layer heating layer is respectively connected the different resistance of a resistivity, and temperature sensor 6, annular-heating piece are provided on the inner wall of pore
5 are connected with temperature sensor 6 by conducting wire.Wherein, the range of N is 12-32.
The centre of circular graphite furnace 2 is provided with a closed collector 12, and N number of nozzle 9 is arranged at the top of collector 12, uses
Nozzle 9 and the pipe close airtight connection for catching up with acid tube 13, the bottom of collector 12 are inverted conical shape by conduit, and center connects one
Exhaust tube is pierced by from furnace bottom, is connect with acid system aftertreatment device is caught up with.
In one example, controller 2 is the integrated circuit modules specially designed using single-chip microcontroller, is had and temperature sensing
Device communication function receives, and can be by adjusting control of the size realization of output voltage to heating sheet calorific value.On controller 2
It is provided with button and LED screen, can show, adjust temperature.
In one example, 12 bottom of collector is inverted conical shape.
In one example, catch up with the overall diameter of acid tube 13 than the interior diameter of pore 7 than small 2-5mm.
In one example, the overall diameter range for catching up with acid tube 13 is 2-5 centimetres.
Each annular-heating piece is all made of the product of same size model, it is ensured that its rated power and resistance keep one
It causes.
Series connection enters the resistance of heating sheet circuit, meets following mathematical relationship with the interior diameter R of acid tube 13 is caught up with, same to ensure
One catches up with temperature above and below in acid tube 13 to keep relative constant, and sour quality is caught up in raising.
Catching up with 13 interior diameter r of acid tube is integer within the scope of 8-30, and unit is millimeter (mm) each layer of series connection heating sheet all-in resistance
RAlways, unit Ω, π are pi, R1For middle layer series resistance, R2For lower layer's series resistance.Wherein,
R2=1.216R1
R2=0.1473 π-1(30-r)RAlways
In one example, cyclic annular heating sheet is cast aluminium heating sheet or ceramic heating flake.
The above-mentioned course of work for catching up with acid system special graphite furnace system is as follows:
(1) sample is put into and catches up with acid tube 13, put it into pore 7；Exhaust tube connects negative pressure line.
(2) power supply is opened, in the display of LED screen 1 it can be seen that the display of temperature, has button 3, with button 3 on the controller
Temperature is adjusted, after temperature regulates, circular graphite furnace 4 begins to work.
(3) heating sheet in the pore 7 of circular graphite furnace 4 is begun to warm up, and catches up with acid tube 13 to begin to warm up dress equipped with sample
Have sample catches up with acid tube 13, forms acid vapour, and collector 12 will absorb collection per the acid vapor caught up in acid tube 13 all the way, converge into all the way
Acid system aftertreatment device is caught up with by access again.
Above specific embodiment has carried out further in detail the purpose of the present invention, technical scheme and beneficial effects
Illustrate, it should be understood that the above is only a specific embodiment of the invention, the protection model that is not intended to limit the present invention
It encloses, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should be included in the present invention
Protection scope within.
Claims (7)
1. one kind catches up with acid system special graphite furnace system, which is characterized in that including circular graphite furnace, collector and controller；
The annular shape graphite furnace is internally provided with N number of pore, places in the pore and catches up with acid tube, sets on the hole wall of each pore
Be equipped with 3 cyclic annular heating sheets, described 3 cyclic annular heating sheets include upper layer heating sheet, middle layer heating sheet, lower layer's heating sheet, it is N number of on
Layer heating sheet is composed in series upper layer heating layer, and N number of middle layer heating sheet is composed in series middle layer heating layer, N number of lower layer's heating sheet series connection
Form lower layer's heating layer, wherein upper layer heating layer, middle layer heating layer and lower layer's heating layer are in parallel, and middle layer heating layer and lower layer add
Thermosphere is respectively connected the different resistance of a resistivity, is provided with temperature sensor on the inner wall of the pore, the annular plus
Backing is connected with the temperature sensor by conducting wire；
There is N number of nozzle at the top of the collector, the nozzle passes through conduit airtight connection with the pipe close of acid tube is caught up with, collector
Bottom connects an exhaust tube, is pierced by, connect with acid system aftertreatment device is caught up with, wherein N from the bottom of circular graphite furnace
Range be 12-32；
The controller is used to adjust the size of the calorific value of annular-heating piece.
2. according to claim 1 catch up with acid system special graphite furnace system, which is characterized in that the controller includes at least
Single-chip microcontroller, the single-chip microcontroller receives the temperature value of the transmission of the temperature sensor, and adjusts annular-heating piece according to temperature value
Calorific value size.
3. according to claim 2 catch up with acid system special graphite furnace system, which is characterized in that described to be adjusted according to temperature value
The size of the calorific value of annular-heating piece, specifically includes:
Controller adjusts the size of the calorific value of annular-heating piece by adjusting the size of output voltage according to temperature value.
4. according to claim 1 catch up with acid system special graphite furnace system, which is characterized in that the collector bottom is to fall
Cone.
5. according to claim 1 catch up with acid system special graphite furnace system, which is characterized in that the controller further include by
Button and LED screen.
6. according to claim 1 catch up with acid system special graphite furnace system, which is characterized in that the overall diameter for catching up with acid tube
Less than the interior diameter of the pore, the difference range of the interior diameter of the overall diameter for catching up with acid tube and the pore is 2-5 millimeters.
7. according to claim 1 catch up with acid system special graphite furnace system, which is characterized in that the overall diameter for catching up with acid tube
2-5 centimetres of range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810790980.8A CN108956260A (en) | 2018-07-18 | 2018-07-18 | One kind catching up with acid system special graphite furnace system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810790980.8A CN108956260A (en) | 2018-07-18 | 2018-07-18 | One kind catching up with acid system special graphite furnace system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108956260A true CN108956260A (en) | 2018-12-07 |
Family
ID=64495924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810790980.8A Pending CN108956260A (en) | 2018-07-18 | 2018-07-18 | One kind catching up with acid system special graphite furnace system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108956260A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111272532A (en) * | 2020-02-18 | 2020-06-12 | 张振江 | Full-automatic digestion acid dispelling instrument |
-
2018
- 2018-07-18 CN CN201810790980.8A patent/CN108956260A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111272532A (en) * | 2020-02-18 | 2020-06-12 | 张振江 | Full-automatic digestion acid dispelling instrument |
| CN111272532B (en) * | 2020-02-18 | 2023-06-09 | 张振江 | Full-automatic digestion acid-removing instrument |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105076507A (en) | A tealeaf charcoal baking and fragrance extraction machine | |
| CN108956260A (en) | One kind catching up with acid system special graphite furnace system | |
| CN207066049U (en) | A kind of novel energy-conserving tea drier | |
| CN206875825U (en) | A kind of silk cocoon fluidized bed drying device | |
| CN205641818U (en) | Mercury catalyst drying device | |
| CN106766710A (en) | Chinese medicinal material drying equipment for drying | |
| CN204006729U (en) | Heavy caliber glass vacuum tube solar supply changeover device | |
| CN206828451U (en) | A kind of microwave-heating device with carrier gas Hybrid Heating and oil collecting function | |
| CN106247760A (en) | A kind of device of microwave drying welding rod | |
| CN204757566U (en) | Weaving dry material device | |
| CN204939672U (en) | Spinning shaft airflow circulating system | |
| CN207709005U (en) | A kind of coral powder hydrogenation system under hydrogen circulation | |
| CN208837677U (en) | A kind of novel Digesting stove | |
| CN207836673U (en) | A kind of tea baking machine | |
| CN106947505A (en) | A kind of heating arrangements | |
| CN207456039U (en) | A kind of intelligent drying unit of production high purity aluminium oxide | |
| CN208547258U (en) | A kind of apparatus for reusing residual heat | |
| CN208312969U (en) | Novel gas enamel drying oven | |
| CN206656581U (en) | A kind of wind circulating system of knitted fabric dryer | |
| CN206695186U (en) | A kind of firepower cumulative packing ring on household kitchen range | |
| CN206995499U (en) | A kind of machine for stir-frying Chinese medicine of effective guarantee frying drug quality | |
| CN205002552U (en) | Charcoal fire heating second grade root of kudzu vine piece drying -machine | |
| CN205482273U (en) | Quick drying device of saline cistanche extract product | |
| CN204952291U (en) | Vacuum decompression and concentration equipment | |
| CN208779888U (en) | A kind of active carbon drying equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181207 |