CN108828131A - Blanking mechanism and blanking method for elemental analyser - Google Patents
Blanking mechanism and blanking method for elemental analyser Download PDFInfo
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- CN108828131A CN108828131A CN201810525508.1A CN201810525508A CN108828131A CN 108828131 A CN108828131 A CN 108828131A CN 201810525508 A CN201810525508 A CN 201810525508A CN 108828131 A CN108828131 A CN 108828131A
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- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/12—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using combustion
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Abstract
The invention discloses a kind of blanking mechanism for elemental analyser, including fixing seat, it is internally provided with and runs through and dock sample dish and test container and fall sample channel with what is fed；Opening/closing component is fed, the feed inlet in sample channel is fallen for sealing or the feed inlet for falling sample channel is made to dock charging with sample dish；And oxygen rinsing module, the air for being carried when falling the oxygen flow for being formed in sample channel and being blown upwards to drain sample charging when falling sample channel and docking with sample dish to be fed.The invention also discloses a kind of blanking methods based on the blanking mechanism as described above for elemental analyser, include the following steps：S01, it closes firstly, feeding opening/closing component to seal up the feed inlet for falling sample channel；S02, oxygen rinsing module are falling the oxygen flow for being formed in sample channel and being blown upwards；S03, charging opening/closing component unlatching dock the feed inlet for falling sample channel to carry out charging operation with sample dish.Mechanism and method of the invention all has the advantages that improving measuring accuracy.
Description
Technical field
The invention mainly relates to constituent content analysis technical field in combustible, refer in particular to a kind of for elemental analyser
Blanking mechanism and blanking method.
Background technique
In combustible in addition to containing part dirt and water, remaining is all organic substance.Organic substance is again in coal
It is mainly made of elements such as carbon, hydrogen, oxygen, nitrogen, sulphur, they are one of the indexs of coal science classification, can also be used to calculate coal
Calorific value, estimation and forecasting coal low temperature distillation product, be evaluate combustible mass basic foundation.It analyzes in combustible
All measuring instruments of constituent content are collectively referred to as elemental analyser.
Currently, falling sample mouth is not whole sealing status when falling sample, combustion furnace is contacted with air when falling sample, and sample falls process
The gases such as nitrogen, carbon dioxide in middle air are brought into combustion furnace with sample, influence the accuracy of experimental result.
Summary of the invention
The technical problem to be solved in the present invention is that：For technical problem of the existing technology, the present invention provides one
Kind guarantees that pure oxygen tests environment, improves the blanking mechanism and blanking method for elemental analyser of measuring accuracy.
In order to solve the above technical problems, technical solution proposed by the present invention is：
A kind of blanking mechanism for elemental analyser, including
Fixing seat is internally provided with and runs through and dock sample dish and test container and fall sample channel with what is fed；
Opening/closing component is fed, is installed in the fixing seat, the feed inlet in sample channel is fallen for sealing or makes to fall sample channel
Feed inlet docks charging with sample dish；And
Oxygen rinsing module, for being blown upwards falling to be formed in sample channel when falling sample channel and docking with sample dish to be fed
Oxygen flow to drain sample charging when the air that carries.
As a further improvement of the above technical scheme：
The fixing seat, which is internally provided with, falls sample opening/closing component, for charging when block fall sample channel make sample closure falling sample
In order to which oxygen rinsing module carries out air cleaning in channel, and is opened after the completion of cleaning and fall sample channel so that sample enters survey
It tries in container.
The sample opening/closing component that falls is installed in the installation cavity body of fixing seat, including pull rod, baffle, elastic component, electromagnet
And draw-bar seat, one end of the pull rod are connected with the baffle, one end of the pull rod stretches in the electromagnet, the drawing
Bar is provided with ring-shaped step in one end of baffle, and the elastic component is set on the pull rod between ring-shaped step and electromagnet；Institute
It states pull rod and is moved under the driving of elastic component and baffle is driven to stretch to and fall in sample channel to carry out sample closure；The draw-bar seat
One end stretches to the other end of electromagnet, and attracts pull rod movement when electromagnet obtains electric baffle pull-out is fallen sample channel.
The elastic component is compressed spring.
The oxygen rinsing module includes source of oxygen and air supply channel, and the air supply channel is located in the fixing seat, is used
In connection source of oxygen and installation cavity.
The air supply channel is connected with installation cavity far from the one end for falling sample channel.
The charging opening/closing component includes sliding block and the first actuator；Piston and receiving hopper, institute are installed on the sliding block
It states sliding block to slide in fixing seat under the driving of the first actuator, piston seal is made to live to fall the feed inlet in sample channel or pass through
Receiving hopper will fall sample channel and be docked with sample dish to carry out charging operation.
It is provided with that described piston moves downward to compress the charging for falling sample channel described in sealing for driving in the sliding block
Mouth holds down assembly.
It is provided with the cavity for installing piston in the sliding block, is sealed between the side and cavity of the piston so that living
Airtight cavity is formed between plug and cavity, described to hold down assembly including source nitrogen, the source nitrogen is connected with the airtight cavity
It is logical.
The charging opening/closing component includes sliding block and the first actuator；Piston and receiving hopper, institute are installed on the sliding block
It states sliding block to slide in fixing seat under the driving of the first actuator, piston seal is made to live to fall the feed inlet in sample channel or pass through
Receiving hopper will fall sample channel and be docked with sample dish to carry out charging operation；Gas circuit, one end of the gas circuit are equipped in the fixing seat
It is connected with installation cavity, the other end is then located between piston and fixing seat, for source of oxygen to be introduced to below piston to work
Plug jacking be detached from fixing seat and it is easy to remove.
It is provided with Jun Liu mechanism between the discharge port and test container for falling sample channel, including what is be connected to a source of oxygen
Snorkel, the snorkel include inner ring and outer rings, among the inner ring with fall sample channel and dock；Between the inner ring and outer ring
Marmon clamp slit circularize air flue, for make gas formed annular airflow；The top of the annular air channel is provided with air inlet,
The lower end surface opening shape of the annular air channel circularizes gas outlet, and stretches in test container.
The upper surface of the snorkel is provided with the first tube socket, is provided with the first inlet channel on first tube socket；Institute
The top loop for stating snorkel is equipped with the second header, is provided with the second inlet channel of L shape in the second header, one end and described the
One inlet channel is connected, and the other end is connected with air inlet；It is connected between first tube socket and the second header by fastener.
The invention also discloses a kind of blanking method based on the blanking mechanism as described above for elemental analyser, packets
Include following steps：
S01, it closes firstly, feeding opening/closing component to seal up the feed inlet for falling sample channel；
S02, oxygen rinsing module are falling the oxygen flow for being formed in sample channel and being blown upwards；
S03, charging opening/closing component unlatching dock the feed inlet for falling sample channel to carry out charging operation with sample dish.
As a further improvement of the above technical scheme：
The detailed process of the step S03 is：
S31, it blocks to fall sample channel and block sample in charging and is falling in sample channel until charging is completed；
It is clean that S32, oxygen rinsing module continue working the air cleaning carried when until sample being fallen；
S33, charging opening/closing component are closed to seal up the feed inlet for falling sample channel；
S34, oxygen rinsing module is closed, and will blocked in the sample delivery to test container for falling sample channel.
Compared with the prior art, the advantages of the present invention are as follows：
Blanking mechanism for elemental analyser of the invention, charging opening/closing component can carry out the feed inlet for falling sample channel close
Envelope guarantees that sample is free from the influence of the external environment in sealed environment in test, improves the accuracy of test result；In addition
In charging, oxygen rinsing module is falling the air-flow for being formed in sample channel and being blown upwards, thus sky entrained when sample is fallen
Gas is discharged from the feed inlet of top, guarantees that sample is tested under hermetically sealed pure oxygen environment, further increases the accurate of test
Property.
Blanking mechanism for elemental analyser of the invention falls sample opening/closing component by being arranged in fixing seat, catches
The sample come in from feed inlet carries out oxygen to sample channel is fallen after the completion of sample all charging, then through oxygen rinsing module
It rinses, guarantees the pure oxygen environment for falling sample channel；Then it is sealed up by feeding the feed inlet of opening/closing component, then opens and fall sample channel
It falls to sample in crucible, guarantees the pure oxygen leakproofness of test environment.
Of the invention falls quadrat method, and in charging, oxygen rinsing module is falling the air-flow for being formed in sample channel and being blown upwards, from
And air entrained when falling sample is discharged from the feed inlet of top, guarantees that sample is surveyed under hermetically sealed pure oxygen environment
Examination, further increases the accuracy of test.In charging, the sample fallen from feed inlet is caught, when sample all complete by charging
Afterwards, then by oxygen rinsing module to sample channel is fallen oxygen flushing is carried out, guarantees the pure oxygen environment for falling sample channel；Then by into
The feed inlet of material opening/closing component seals up, then opens and fall sample channel and fall to sample in crucible, guarantees the pure oxygen of test environment
Environment and leakproofness.
Detailed description of the invention
Fig. 1 is the schematic cross-sectional view of original state of the present invention.
Fig. 2 is the schematic cross-sectional view of feed state of the present invention.
Fig. 3 is the schematic cross-sectional view of blanking state of the present invention.
Fig. 4 is the schematic cross-sectional view of Zhong Junliu mechanism of the present invention.
Fig. 5 is the overlooking structure diagram of Zhong Junliu mechanism of the present invention.
Figure label indicates：1, sample dish；2, fixing seat；201, sample channel is fallen；202, gas circuit；3, opening/closing component is fed；
301, sliding block；302, piston；3021, sealing element；303, receiving hopper；304, sliding block fixing seat；305, the first actuator；306, it presses
Tight component；3061, source nitrogen；4, sample opening/closing component is fallen；401, pull rod；402, baffle；403, elastic component；404, draw-bar seat；
405, electromagnet；406, cavity is installed；5, oxygen rinsing module；501, source of oxygen；502, air supply channel；6, Jun Liu mechanism；61,
Snorkel；6101, inner ring；6102, outer ring；6103, feeding-passage；6104, annular air channel；6105, air inlet；6106, outlet
Mouthful；62, the first tube socket；6201, the first inlet channel；6202, fastener；63, the second header；6301, the second inlet channel；
64, seal assembly；7, ventilative crucible；8, U-tube；9, sample.
Specific embodiment
Below in conjunction with Figure of description and specific embodiment, the invention will be further described.
As shown in Figures 1 to 5, the blanking mechanism for elemental analyser of the present embodiment, is installed on sample dish 1 and test is held
Device（Such as crucible）Between, it specifically includes
Fixing seat 2, the test container for being internally provided with sample dish 1 and lower section above running through up and down and docking are fallen with what is fed
Sample channel 201, the top for falling sample channel 201 is feed inlet, and lower section is discharge port；
Opening/closing component 3 is fed, is installed on the upper surface of fixing seat 2, the feed inlet in sample channel 201 is fallen for sealing or makes to fall
The feed inlet in sample channel 201 is docked with sample dish 1 to feed；And
Oxygen rinsing module 5 is falling sample channel when for docking in the feed inlet for falling sample channel 201 with sample dish 1 to be fed
The oxygen flow blown upwards is formed in 201 to drain air entrained when sample 9 is fed or fall residual in itself in sample channel 201
The air stayed.
Blanking mechanism for elemental analyser of the invention, charging opening/closing component 3 being capable of charging to sample channel 201 is fallen
Mouth is sealed, and is guaranteed that sample 9 is free from the influence of the external environment in sealed environment in test, is improved the standard of test result
True property；In addition in charging, oxygen rinsing module 5 is falling the air-flow for being formed in sample channel 201 and being blown upwards, so that sample 9 be fallen
Entrained air is discharged from the feed inlet of top when falling, and guarantees that sample 9 is tested under hermetically sealed pure oxygen environment, further
Improve the accuracy of test.
In the present embodiment, fixing seat 2, which is internally provided with, falls sample opening/closing component 4, falls sample channel 201 for blocking in charging
It blocks sample 9 falling in order to which oxygen rinsing module 5 carries out air cleaning in sample channel 201, and is opened after the completion of cleaning
Sample channel 201 is fallen so that sample 9 enters in test container.By in fixing seat 2 be arranged fall sample opening/closing component 4, catch from into
The sample 9 that material mouth is come in carries out oxygen to sample channel 201 is fallen after the completion of sample 9 all charging, then through oxygen rinsing module 5
Gas flushing guarantees the pure oxygen environment for falling sample channel 201；Then it is sealed up by feeding the feed inlet of opening/closing component 3, then opens and fall
Sample channel 201 falls to sample 9 in crucible, guarantees the pure oxygen leakproofness of test environment.
As shown in Figure 1 to Figure 3, in the present embodiment, the strip installation cavity 406 that sample opening/closing component 4 is installed on fixing seat 2 is fallen
It is interior, pull rod 401, electromagnet 405, elastic component 403 and draw-bar seat 404 are specifically included, wherein one end of pull rod 401 is connected with baffle
402, the other end of pull rod 401 is then plugged in electromagnet 405, and one end of draw-bar seat 404 is inserted in the another of electromagnet 405
End, wherein pull rod 401 is provided with ring-shaped step, elastic component 403 in one end of baffle 402（Such as compressed spring）Then it is located at annular table
On pull rod 401 between rank and electromagnet 405；When electromagnet 405 is not powered on, pull rod 401 under the elastic force of compressed spring to
Right movement is fallen in sample channel 201 so that baffle 402 stretches to catch sample 9；When electromagnet 405 is powered, draw-bar seat 404
Magnetic force is generated to attract pull rod 401 to the right, so that baffle 402 be extracted out from falling in sample channel 201, sample 9 then fall down to
In crucible.
As shown in Figure 1 to Figure 3, in the present embodiment, oxygen rinsing module 5 includes source of oxygen 501 and air supply channel 502, gas
Source channels 502 are located in fixing seat 2, for being connected to source of oxygen 501 and installation cavity 406.Wherein air supply channel 502 and installation cavity
Body 406 is far from the one end for falling sample channel 201（A point in Fig. 1）It is connected, to guarantee and the installation cavity that falls sample channel 201 and be connected
Pure oxygen environment is also in body 406.Specifically, it is connected between source of oxygen 501 and air supply channel 502 by pipeline, is set on pipeline
It is equipped with pipe valve；After source of oxygen 501 and pipe valve are opened, oxygen successively enters installation cavity body 406 after pipeline, air supply channel 502
It is interior, the air in cavity 406 will be installed through the gap between pull rod 401 and installation cavity 406, then through the gap at baffle 402
It enters to and falls sample channel 201, then be up discharged through feed inlet.
As shown in Figure 1 to Figure 3, in the present embodiment, charging opening/closing component 3 includes sliding block 301 and the first actuator 305（Such as
Cylinder or oil cylinder etc.）；Piston 302 and receiving hopper 303, driving of the sliding block 301 in the first actuator 305 are installed in sliding block 301
Under fixing seat 2 upper surface slide, make piston 302 seal up the feed inlet for falling sample channel 201 or by receiving hopper 303 will
Sample channel 201 is fallen to be docked with sample dish 1 to carry out charging operation；Sample channel 201 will be fallen in test to be sealed；It is feeding
When, sample channel 201 will be fallen by receiving hopper 303 and docked with sample dish 1, realize and be switched fast between sealing state and feed state,
And structure is simple, easy to operate and be easily achieved.
In the present embodiment, specifically, the cavity for installing piston 302, the side of piston 302 are provided in sliding block 301
Pass through sealing element 3021 between cavity（Such as O-ring seal）Sealing is so as to form closed chamber between piston 302 and cavity inner wall
Body, in addition the bottom of piston 302 is also equipped with sealing ring, guarantees the sealing reliability to feed inlet；Setting is useful in sliding block 301
306 are held down assembly in driving piston 302 to move downward to fall the feed inlet in sample channel 201 to compress sealing, to further increase
The reliability of sealing；Specifically, holding down assembly 306 includes source nitrogen 3061, and wherein source nitrogen 3061 passes through the gas on sliding block 301
Hole（It is not shown in the figure）It is connected with airtight cavity.Wherein the side of sliding block 301 is provided with sliding block fixing seat 304, source nitrogen
3061 are connected through pipeline with the air flue of sliding block fixing seat 304, are located at gating location in piston 302 and are sealed to feed inlet
When, source nitrogen 3061 is opened, and nitrogen successively enters in airtight cavity through the air flue in pipeline, sliding block fixing seat 304, to make
Piston 302 is pressed down against, effectively to be sealed to feed inlet.In addition, gas circuit 202 is additionally provided in fixing seat 2, gas circuit 202
One end be connected with installation cavity 406, the other end then runs through fixing seat 2, is open between piston 302 and fixing seat 2；
When needing to unseal piston 302, source nitrogen 3061 is closed, gas is entered to through air flue by piston by source of oxygen 501
302 lower surface, consequently facilitating piston 302 is slided with sliding block 301, avoids piston 302 so that piston 302 be made to jack downwards
After the sealing element 3021 of lower section and 2 adhesion of fixing seat, then damage when being moved left and right to sealing element 3021.
In the present embodiment, falls between the discharge port and test container in sample channel 201 and be provided with Jun Liu mechanism 6, specifically include
With a source of oxygen 501（It is shared with oxygen rinsing module 5, naturally it is also possible to be independently arranged）The snorkel 61 of connection, snorkel 61
Including inner ring 6101 and outer ring 6102, the feeding-passage 6103 among inner ring 6101 is docked with sample channel 201 is fallen；Inner ring 6101 with
Marmon clamp slit between outer ring 6102 circularizes air flue 6104, for making gas form annular airflow；Annular air channel 6104
Top is provided with air inlet 6105, and the lower end surface opening shape of annular air channel 6104 circularizes gas outlet 6106, and stretches to test
Container（Such as ventilative crucible 7）It is interior.The annular air channel 6104 being made up of inner ring 6101 in snorkel 61 and outer ring 6102, makes to be passed through
Gas formed annular airflow, by the middle part of annular airflow sample 9 and outside air completely cut off, guarantee sample 9 under pure oxygen environment
Full combustion；61 lower end of snorkel is inserted directly into ventilative crucible 7, the splashing of sample 9 when can be avoided sample-adding；In addition sample
The gas that product 9 generate after burning directly passes through oxygen stream and takes out of from the bottom of ventilative crucible 7, can avoid experimental gas in crucible
Residual improves experimental precision.
In the present embodiment, the upper end face closure of annular air channel 6104, air inlet 6105 be it is multiple, be evenly distributed on outer ring
The side on 6102 tops.
In the present embodiment, the upper surface of snorkel 61 is provided with the first tube socket 62 in Π shape, and the first tube socket 62 covers on logical
On tracheae 61, the first inlet channel 6201 is provided on the first tube socket 62, as shown in figure 5, the first inlet channel 6201 be it is multiple,
Uniform annular is distributed on the first tube socket 62；The top side of snorkel 61 is equipped with the second header 63, sets in the second header 63
Be equipped with L-shaped second inlet channel 6301, one end is connected with the first inlet channel 6201, the other end then with 6105 phase of air inlet
Even, due to using multiple inlet channels being evenly arranged, guarantee the uniformity of air-flow；Between first tube socket 62 and the second header 63
Pass through fastener 6202（Such as fastening screw）It is connected, as shown in figure 5, between the annular side and the second header 63 of the first tube socket 62
It is fastened by multiple equally distributed fastening screws.In addition, the first tube socket 62 and outer ring 6102, the second header 63 and outer ring
Seal assembly 64 is provided between 6102（Such as Gask-O-Seal）, guarantee the leakproofness of inlet channel.
The cardinal principle of Jun Liu mechanism 6 is：Oxygen passes through the first inlet channel 6201 and the second pipe on the first tube socket 62
The second inlet channel 6301 on seat 63, flows into snorkel 61 using the air inlet 6105 of 61 outer ring of snorkel, 6102 side
Annular air channel 6104 in, oxygen is uniformly diffused on the analysis sample 9 in ventilative crucible 7 by 6104 water conservancy diversion of annular air channel,
And form an annular oxygen mask around analysis sample 9 and completely cut off with ambient gas, promote to analyze sample 9 and oxygen is abundant
It contacts and completely burned, the gas after analysis sample 9 burns is shed by ventilative 7 bottom of crucible, is flowed into test gas circuit, from
And reduce gas residue.
The invention also discloses a kind of blanking method based on the blanking mechanism as described above for elemental analyser, packets
Include following steps：
S01, it closes firstly, feeding opening/closing component 3 to seal up the feed inlet for falling sample channel 201；
S02, oxygen rinsing module 5 are falling the oxygen flow for being formed in sample channel 201 and being blown upwards；
S03, the charging unlatching of opening/closing component 3 dock the feed inlet for falling sample channel 201 to carry out charging operation with sample dish 1.
Of the invention falls quadrat method, and in charging, oxygen rinsing module 5 is falling the gas for being formed in sample channel 201 and being blown upwards
Stream guarantees sample 9 in hermetically sealed pure oxygen so that air entrained when sample 9 is fallen is discharged from the feed inlet of top
It is tested under environment, further increases the accuracy of test.
In the present embodiment, the detailed process of step S03 is：
S31, it blocks to fall sample channel 201 and block sample 9 in charging and is falling in sample channel 201 until charging is completed；
It is clean that S32, oxygen rinsing module 5 continue working the air cleaning carried when until sample 9 being fallen；
S33, charging opening/closing component 3 are closed to seal up the feed inlet for falling sample channel 201；
S34, oxygen rinsing module 5 is closed, and is delivered to blocking in test container in the sample 9 for falling sample channel 201.
In charging, the sample 9 fallen from feed inlet is caught, is rinsed after the completion of sample 9 all charging, then through oxygen
Component 5 carries out oxygen flushing to sample channel 201 is fallen, and guarantees the pure oxygen environment for falling sample channel 201；Then pass through charging opening/closing component
3 feed inlet seals up, then opens and fall sample channel 201 and fall to sample 9 in crucible, guarantee the pure oxygen environment of test environment with
And leakproofness.
It is described further below with reference to blanking mechanism to quadrat method is fallen：
Fall original state before sample：Piston 302 in sliding block 301 is in gating location, and nitrogen valve is opened, and gas is fixed by sliding block
Seat 304 enters back into the airtight cavity that sliding block 301 and piston 302, sealing ring are formed, and the downward clamping piston 302 of air pressure makes to live
The sealing ring for filling in 302 bottoms is sealed with by feed inlet to be isolated from the outside world；
Then source of oxygen 501 is opened, and oxygen divides two-way to walk after the entrance of fixing seat 2, is spread all the way into the interlayer of snorkel 61
Into the U-tube 8 in 61 outside of snorkel, another way into installation cavity 406, then passes through pull rod by air supply channel 502
401 with the crack of installation cavity 406, then fall sample channel 201 through what the gap at baffle 402 was diffused into；
9 feed state of sample：Source of oxygen 501 continues opening state, and nitrogen valve is closed, the sealing ring of 302 bottom of piston and fixation
The sealing state of 2 upper surfaces of seat releases, and cylinder is moved downward with the piston 302 in movable slider 301 to falling sample position, and sample 9 is from sample
Disk 1 is fallen on the baffle 402 fallen in sample channel 201 through receiving hopper 303, in the mistake that piston 302 is unsealed and fallen with sample 9
Cheng Zhong, oxygen form continual air-flow together, up flow into outside air from the baffle 402 for falling sample channel 201, from
And outside air is avoided to enter in experiment gas circuit in sample introduction；
Sample 9 falls to ventilative 7 state of crucible：Oxygen valve continues opening state, and sample 9 is brought into when falling sample 9 after falling
Air douche it is clean, then cylinder is moved right with the piston 302 in movable slider 301 to initial bit, and nitrogen valve is opened, and makes to live
The sealing ring and feed inlet for filling in 302 bottoms seal, and under hermetically sealed pure oxygen environment, electromagnet 405 is opened, and make on pull rod 401
Baffle 402 move downward, sample 9, which is fallen in ventilative crucible 7, to burn, electromagnet 405 close, compressed spring drive pull rod
Baffle 402 on 401 resets, and falls sample completion.
The above is only the preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment,
All technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
For those of ordinary skill, several improvements and modifications without departing from the principles of the present invention should be regarded as protection of the invention
Range.
Claims (14)
1. a kind of blanking mechanism for elemental analyser, which is characterized in that including
Fixing seat（2）, it is internally provided with and runs through and dock sample dish（1）Sample channel is fallen with test container with what is fed（201）；
Feed opening/closing component（3）, it is installed on the fixing seat（2）On, sample channel is fallen for sealing（201）Feed inlet or make
Fall sample channel（201）Feed inlet and sample dish（1）Docking charging；And
Oxygen rinsing module（5）, for falling sample channel（201）With sample dish（1）When docking is to be fed, sample channel is being fallen
（201）The interior oxygen flow blown upwards that formed is to drain sample（9）The air carried when charging.
2. the blanking mechanism according to claim 1 for elemental analyser, which is characterized in that the fixing seat（2）It is interior
Portion, which is provided with, falls sample opening/closing component（4）, sample channel is fallen for blocking in charging（201）Make sample（9）Closure is falling sample channel
（201）It is interior in order to oxygen rinsing module（5）Air cleaning is carried out, and is opened after the completion of cleaning and falls sample channel（201）So that
Sample（9）Into in test container.
3. the blanking mechanism according to claim 2 for elemental analyser, which is characterized in that described to fall sample opening/closing component
（4）It is installed on fixing seat（2）Installation cavity（406）It is interior, including pull rod（401）, baffle（402）, elastic component（403）, electromagnetism
Iron（405）And draw-bar seat（404）, the pull rod（401）One end and the baffle（402）It is connected, the pull rod（401）One
End stretches to the electromagnet（405）It is interior, the pull rod（401）In baffle（402）One end be provided with ring-shaped step, the bullet
Property part（403）It is set in ring-shaped step and electromagnet（405）Between pull rod（401）On；The pull rod（401）In elastic component
（403）Driving under movement drive baffle（402）It stretches to and falls sample channel（201）It is interior to carry out sample（9）It blocks；The pull rod
Seat（404）One end stretch to electromagnet（405）The other end, and in electromagnet（405）Attract pull rod when obtaining electric（401）Movement
With by baffle（402）Pull-out falls sample channel（201）.
4. the blanking mechanism according to claim 3 for elemental analyser, which is characterized in that the elastic component（403）
For compressed spring.
5. the blanking mechanism according to claim 3 or 4 for elemental analyser, which is characterized in that the oxygen rinses
Component（5）Including source of oxygen（501）And air supply channel（502）, the air supply channel（502）Positioned at the fixing seat（2）It is interior, it uses
In connection source of oxygen（501）With installation cavity（406）.
6. the blanking mechanism according to claim 5 for elemental analyser, which is characterized in that the air supply channel
（502）With installation cavity（406）It is separate to fall sample channel（201）One end be connected.
7. the blanking mechanism as claimed in any of claims 1 to 4 for elemental analyser, which is characterized in that institute
State charging opening/closing component（3）Including sliding block（301）With the first actuator（305）；The sliding block（301）On piston is installed
（302）And receiving hopper（303）, the sliding block（301）In the first actuator（305）Driving under in fixing seat（2）Upper sliding, makes
Piston（302）It seals up and falls sample channel（201）Feed inlet or pass through receiving hopper（303）Sample channel will be fallen（201）With sample dish
（1）Docking is to carry out charging operation.
8. the blanking mechanism according to claim 7 for elemental analyser, which is characterized in that the sliding block（301）It is interior
It is provided with for driving the piston（302）It moves downward and falls sample channel described in sealing to compress（201）Feed inlet compression
Component（306）.
9. the blanking mechanism according to claim 8 for elemental analyser, which is characterized in that the sliding block（301）It is interior
It is provided with for installing piston（302）Cavity, the piston（302）Side and cavity between sealing so that piston（302）
Airtight cavity is formed between cavity, it is described to hold down assembly（306）Including source nitrogen（3061）, the source nitrogen（3061）With institute
Airtight cavity is stated to be connected.
10. the blanking mechanism according to claim 5 for elemental analyser, which is characterized in that the charging opening and closing group
Part（3）Including sliding block（301）With the first actuator（305）；The sliding block（301）On piston is installed（302）And receiving hopper
（303）, the sliding block（301）In the first actuator（305）Driving under in fixing seat（2）Upper sliding, makes piston（302）Sealing
Firmly fall sample channel（201）Feed inlet or pass through receiving hopper（303）Sample channel will be fallen（201）With sample dish（1）Docking is to carry out
Feed operation；The fixing seat（2）It is interior to be equipped with gas circuit（202）, the gas circuit（202）One end and installation cavity（406）It is connected,
The other end is then located at piston（302）With fixing seat（2）Between, it is used for source of oxygen（501）It is introduced to piston（302）Lower section is with right
Piston（302）Jacking is detached from fixing seat（2）And it is easy to remove.
11. the blanking mechanism as claimed in any of claims 1 to 4 for elemental analyser, which is characterized in that institute
It states and falls sample channel（201）Discharge port and test container between be provided with Jun Liu mechanism（6）, including with a source of oxygen（501）Even
Logical snorkel（61）, the snorkel（61）Including inner ring（6101）And outer ring（6102）, the inner ring（6101）It is intermediate with
Fall sample channel（201）Docking；The inner ring（6101）With outer ring（6102）Between marmon clamp slit circularize air flue（6104）,
For making gas form annular airflow；The annular air channel（6104）Top be provided with air inlet（6105）, the annular gas
Road（6104）Lower end surface opening shape circularize gas outlet（6106）, and stretch in test container.
12. the blanking mechanism according to claim 11 for elemental analyser, which is characterized in that the snorkel（61）
Upper surface be provided with the first tube socket（62）, first tube socket（62）On be provided with the first inlet channel（6201）；It is described logical
Tracheae（61）Top loop be equipped with the second header（63）, the second header（63）On be provided with the second inlet channel of L shape
（6301）, one end and first inlet channel（6201）It is connected, the other end and air inlet（6105）It is connected；First tube socket
（62）With the second header（63）Between pass through fastener（6202）It is connected.
13. a kind of blanking side based on the blanking mechanism for being used for elemental analyser described in any one of claim 1 to 12
Method, which is characterized in that include the following steps：
S01, firstly, charging opening/closing component（3）It closes and falls sample channel to seal up（201）Feed inlet；
S02, oxygen rinsing module（5）Falling sample channel（201）It is interior to form the oxygen flow blown upwards；
S03, charging opening/closing component（3）Unlatching will fall sample channel（201）Feed inlet and sample dish（1）Docking is to carry out charging work
Industry.
14. blanking method according to claim 13, which is characterized in that the detailed process of the step S03 is：
S31, in charging, closure falls sample channel（201）Make sample（9）Closure is falling sample channel（201）It is interior to be completed until feeding；
S32, oxygen rinsing module（5）It continues working until by sample（9）The air cleaning carried when falling is clean；
S33, charging opening/closing component（3）It closes and falls sample channel to seal up（201）Feed inlet；
S34, oxygen rinsing module is closed（5）, and closure is being fallen into sample channel（201）Sample（9）It is delivered in test container.
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