CN208206765U - Self-adapting type graphite furnace self-locking device - Google Patents
Self-adapting type graphite furnace self-locking device Download PDFInfo
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- CN208206765U CN208206765U CN201721763279.4U CN201721763279U CN208206765U CN 208206765 U CN208206765 U CN 208206765U CN 201721763279 U CN201721763279 U CN 201721763279U CN 208206765 U CN208206765 U CN 208206765U
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Abstract
A kind of self-adapting type graphite furnace self-locking device, it is characterized by: it includes fixed furnace part (1), movable furnace part (2), link mechanism (3) and base component (4), the fixed furnace part (1) is on the base component, the activity furnace part (2) is connected with the base component (4), and the relative position between the activity furnace part (2) and the fixed furnace part (1) can be adjusted by the link mechanism (3).The graphite furnace self-locking mechanism that the adaptive graphite length of tube temperature becomes, can locking function be realized with the link mechanism that itself crank length can be changed completely, it is compact-sized, function-stable is reliable, without self-locking impact, at the same can in the graphite furnace atomizer course of work adaptive graphite-pipe length variable quantity.The service life that graphite-pipe can effectively be extended, reduces use cost.
Description
Technical field
The invention belongs to species analysis Instrument technology fields, are specifically exactly to be related to self-adapting type graphite furnace self-locking device.
Background technique
Atomic Absorption Spectrometer is a kind of extremely important analysis method in analytical chemistry field, is widely used in metallurgical work
Industry.Atomic absorption spectrography (AAS) is that the side of quantitative analysis is carried out using the degree of absorption of the ground state atom characteristic radiation line of tested element
Method.Not only certain major constituents measurements can be carried out, but also can be carried out ppm, ppb grades of determinations of trace, Atomic Absorption Spectrometer can measure more
Kind element, wherein flame atomic absorption spectrometry can measure 10-9The g/mL order of magnitude, graphite oven atomic absorption can measure 10- 13The g/mL order of magnitude.
Atomic Absorption Spectrometer is made of light source, atomizer, beam splitting system and detection system, Atomic Absorption Spectrometer
Working principle be that sample is converted into steam in atomizer, since temperature is lower, most of atoms are in ground state, when from sky
When single beam that heart cathode modulation radiation emission goes out passes through sample steam, since the electronics in radiation frequency and atom is by ground state transition
The frequency of the energy to required for compared with highly excited level is corresponding, and a part of light is by Atomic absorption, i.e. RESONANCE ABSORPTION.Another part
Unabsorbed light is to analyze signal, is received by photodetector system.The degree weakened by absorption due to sharp Line beam with
The concentration of analytical element is directly proportional in atomic vapour, so measurement result is compared with standard, so that it may obtain the member in sample
Cellulose content.
Graphite furnace atomizer is one of most important device of atomic absorption analyzer device, and analyst coverage almost covers
All metallic elements, and sensitivity highest, are widely used in the trace detection of element.Graphite furnace atomizer inhales atom
The photometric performance indicator of contracture light has important influence.Graphite furnace body will lead to high current, cooling water and protective gas, this
So that the internal structure of graphite furnace body is complicated.The furnace body of graphite furnace atomizer during the work time, on the one hand will be to graphite
Pipe is clamped, on the other hand due to the existing huge temperature difference before and after graphite-pipe heating during atomizing, so that graphite
Pipe reaches 1-1.2mm due to length variable quantity caused by expanding with heat and contract with cold, and therefore, it is necessary to the opposite positions between fixed furnace body and movable furnace body
The length variation that shifting can adapt to graphite-pipe automatically is broken during heating to avoid graphite-pipe.So graphite furnace body structure
It is reasonable whether, not only directly affect the service life of graphite-pipe and graphite furnace itself, but also will affect detection accuracy, it is existing
The fastening of some graphite furnaces realizes mainly by the movement of pneumatic operated valve, and pneumatic operated valve impacts larger when acting, and be easy to cause the damage of graphite-pipe
It is bad.
Summary of the invention
The purpose of the present invention is be easy aiming at existing graphite furnace atomizer to graphite-pipe in graphite-pipe heating process
The technological deficiency of fracture provides self-adapting type graphite furnace self-locking device, caused by the adaptive graphite-pipe of energy is because of characteristic of expanding with heat and contract with cold
Length variable quantity solves the defect of the excessive damage for causing graphite-pipe of pneumatic operated valve impact force, effectively extends graphite-pipe
Service life.
Technical solution
In order to achieve the above technical purposes, the self-adapting type graphite furnace self-locking device that the present invention designs, it is characterised in that: it
Including fixed furnace part, movable furnace part, link mechanism and base component, the fixed furnace part is mounted in the pedestal
On component, the activity furnace part is connected with the base component, the activity furnace part and the fixed furnace body portion
Relative position between part can be adjusted by the link mechanism.
Further, the fixed furnace part includes fixed furnace body, graphite cone one, graphite-pipe, gas path joint one, lens barrel
One, saturating ultraviolet quartz glass one, lens barrel end cap one, O-ring seal one, water pipe head one, copper conductor connection terminal；
The ultraviolet quartz glass one is fitted in one end of lens barrel one by lens barrel end cap one, the lens barrel one it is another
End is mounted in the mounting groove one on the fixed furnace body side end after loading onto O-ring seal one, the fixed furnace body other side end
Mounting groove two be provided with graphite cone one, the graphite-pipe is inserted into graphite cone one, and the gas path joint one and copper are led
Line connection terminal is mounted in the side end face of the fixed furnace body, and the water pipe head one is protruded into mounted in the lower end surface of the fixed furnace body
The base component.
Further, the movable furnace part includes movable furnace body, lens barrel two, saturating ultraviolet quartz glass two, lens barrel end cap
Two, O-ring seal two, graphite cone two, guiding axis, gas path joint two, water pipe head two, circuit connects, link mechanism connecting pin, tightly
Determine screw one and O-ring seal three；
The ultraviolet quartz glass two is pressed one end of lens barrel two, the other end of the lens barrel two by lens barrel end cap two
It is mounted in the mounting groove three on the movable furnace body side end after loading onto O-ring seal two, on the activity furnace body other side end
It is set with O-ring seal three, graphite cone two is inserted into the mounting groove four at the movable furnace body other side end, the fixed dress of guiding axis
On the movable furnace part, link mechanism connecting pin is connected mounted in the movable furnace body with the link mechanism.
Further, link mechanism includes limit film, nut, spring, crank, shaft, hinge, handle, connecting rod and axis card
Ring；
The crank is passed through from the hole in shaft and hinge, and spring is cased on the crank, and the crank is worn from hinge
The one end crossed utilizes nut locking, and handle is housed in the shaft, and the hinge is connected with connecting rod, the connecting rod and the connecting rod
Mechanism connecting pin is connected, and the shaft is on base component.
Further, the base component includes pedestal, electric bakelite fixed block, linear bearing and holding screw two, described straight
Spool holds in the hole for being mounted on electric bakelite fixed block and is compressed by holding screw two, passes through between pedestal and electric bakelite fixed block
Screw connection.
Beneficial effect
Self-adapting type graphite furnace self-locking device provided by the invention, the connecting rod machine that can be can be changed completely with itself crank length
Structure realizes locking function, compact-sized, function-stable is reliable, without self-locking impact, while can work in graphite furnace atomizer
The length variable quantity of adaptive graphite-pipe in the process.The service life that graphite-pipe can effectively be extended, reduces use cost.
Detailed description of the invention
Attached drawing 1 is the product figure of the embodiment of the present invention.
Attached drawing 2 is the exploded view of the embodiment of the present invention.
Attached drawing 3 is the exploded view that furnace part is fixed in the embodiment of the present invention.
Attached drawing 4 is the structural schematic diagram that furnace part is fixed in the embodiment of the present invention.
Attached drawing 5 is the exploded view of movable furnace part in the embodiment of the present invention.
Attached drawing 6 is the structural schematic diagram of movable furnace part in the embodiment of the present invention.
Attached drawing 7 is the structural schematic diagram of link mechanism in the embodiment of the present invention.
Attached drawing 8 is the exploded view of base component in the embodiment of the present invention.
Attached drawing 9 is the structural schematic diagram of base component in the embodiment of the present invention.
Attached drawing 10 is the course of work schematic diagram of the embodiment of the present invention.
Specific embodiment
With reference to the accompanying drawings and examples, the present invention will be further described.
Embodiment
As shown in figure 1 and 2, self-adapting type graphite furnace self-locking device, it includes fixed furnace part 1, movable furnace body portion
Part 2, link mechanism 3 and base component 4, the fixed furnace part 1 is on the base component, the activity furnace part
2 are connected with the base component 4, and the relative position between the activity furnace part 2 and the fixed furnace part 1 can quilt
The link mechanism 3 is adjusted.
As shown in figures 3 and 4, the fixed furnace part 1 includes fixed furnace body 101, graphite cone 1, graphite-pipe
103, gas path joint 1, lens barrel 1, saturating ultraviolet quartz glass 1, lens barrel end cap 1, O-ring seal 1,
Water pipe head 1, copper conductor connection terminal 110；
The ultraviolet quartz glass 1 is fitted in one end of lens barrel 1, the mirror by lens barrel end cap 1
The other end of cylinder 1 is mounted in one 101a of mounting groove on fixed 101 1 side of furnace body after loading onto O-ring seal 1
Interior, two 101b of mounting groove of another side of the fixed furnace body 101 is provided with graphite cone 1, and the graphite-pipe 103 is inserted into
In the graphite cone 1, the gas path joint 1 and copper conductor connection terminal 110 are mounted in the fixed furnace body 101
Side end face, the water pipe head 1 protrude into the base component 4 mounted in the lower end surface of the fixed furnace body 101.
As depicted in figures 5 and 6, the movable furnace part 2 includes movable furnace body 201, lens barrel 2 204, saturating ultraviolet quartz
Glass 2 205, lens barrel end cap 2 203, O-ring seal 2 206, graphite cone 2 207, guiding axis 202, gas path joint 2 210, water
Pipe fitting 2 211, terminal 212, link mechanism connecting pin 213, holding screw 1 and O-ring seal 3 215；
The ultraviolet quartz glass 2 205 is pressed one end of lens barrel 2 204, the lens barrel by lens barrel end cap 2 203
2 204 other end is mounted in three 201a of mounting groove on 201 1 side of the movable furnace body after loading onto O-ring seal 2 206,
O-ring seal 3 215 is set on another side of the activity furnace body 201, graphite cone 2 207 is inserted into the movable furnace body
In four 201b of mounting groove of 201 another sides, guiding axis 202 is installed on the movable furnace part 2, and link mechanism connects
Outbound 213 is connected mounted in the movable furnace body 201 with the link mechanism 3.
As shown in Fig. 7, the link mechanism 3 includes limit film 301, nut 302, spring 303, crank 304, shaft
305, hinge 306, handle 307, connecting rod 308 and axis snap ring 309；
The crank 304 is passed through from the hole in shaft 305 and hinge 306, and spring 303, institute are cased on the crank 304
It states crank 304 and is locked from one end that hinge 306 passes through using nut 302, handle 307, the hinge are housed in the shaft 305
Chain 306 is connected with connecting rod 308, and the connecting rod 308 is connected with the link mechanism connecting pin 213, and the shaft 305 is mounted in base
On base member 4.
As shown in figs. 8 and 9, the base component 4 includes pedestal 401, electric bakelite fixed block 402,403 He of linear bearing
Holding screw 2 404, the linear bearing 403 are mounted in the hole of electric bakelite fixed block 402 and are pressed by holding screw 2 404
Tightly, it is connected between pedestal 401 and electric bakelite fixed block 402 by screw 405.
The course of work of the present embodiment is: as shown in Fig. 10, when needing to open graphite furnace replacement graphite-pipe, counterclockwise
Turning knob handle 307, the spring 303 covered between crank 304 and hinge 306 are compressed, and crank 304 participates in the effective of movement
Length shortens, elongated again after crank 304 continues to rotate counterclockwise and crosses the position conllinear with connecting rod 308, continues counterclockwise
Joystick knob 307 is rotated, spring 303 again slowly open by elongated driving activity furnace body, when hinge is flicked and limit film by spring 303
Effective active length of crank 304 reaches maximum and remains unchanged when 301 contact, and the pretightning force of spring can pass through nut at this time
302 are adjusted.
When needing to close graphite furnace, joystick knob 307, driving of the movable furnace body in slider-crank mechanism are rotated clockwise
Under move right, when movable furnace body reaches the two graphite cone 1 and stone being located on fixed furnace body 101 and movable furnace body 201
Ink cone 2 207 will be contacted with graphite-pipe 103, continue to rotate clockwise joystick knob 307, and spring 303 is slowly compressed, at this point,
The length of spring 303 reaches most short, and spring 303 is slowly elongated again after crossing the position, upper raised points and electric glue when connecting rod 308
After the wooden fixed block 401 contacts, still there is certain elastic force on spring 303, which can keep two graphite cones 1 and stone
Ink cone 2 207 compresses graphite-pipe 103.When graphite-pipe heating is elongated, since maximum value has not yet been reached in the decrement of spring,
Therefore the elongation that graphite-pipe is compensated by compressing can be continued, it is added in the pressing force on graphite-pipe at this time than the increasing before heating elongation
The value added maximum incrementss for being no more than spring force, so selecting suitable spring rate that can compensate the elongation of graphite-pipe
It can play the role of compressing graphite-pipe again.For example, when selecting central diameter for 11mm, line footpath 0.8mm, number of active coils 6, always
When enclosing the spring that number is 8, rigidity is about 0.506n/mm, when the length of graphite-pipe increases 2mm, is added on graphite-pipe
Pressing force is maximum only to increase 1.12N.Pressing force before graphite-pipe heating is 10.13N, therefore a kind of adaptive graphite
The graphite furnace atomizer device of length of tube variation can effectively compress graphite-pipe, and can effectively prevent graphite-pipe and adding
It is broken in thermal process.
Claims (5)
1. self-adapting type graphite furnace self-locking device, it is characterised in that: it includes fixed furnace part (1), movable furnace part
(2), link mechanism (3) and base component (4), the fixed furnace part (1) is on the base component, the travelling oven
Body component (2) is connected with the base component (4), between the activity furnace part (2) and the fixed furnace part (1)
Relative position can be adjusted by the link mechanism (3).
2. self-adapting type graphite furnace self-locking device as described in claim 1, it is characterised in that: the fixed furnace part (1)
Including fixed furnace body (101), graphite bores one (102), graphite-pipe (103), gas path joint one (104), lens barrel one (105), saturating purple
Outer quartz glass one (106), lens barrel end cap one (107), O-ring seal one (108), water pipe head one (109), copper conductor connection
Terminal (110)；
The ultraviolet quartz glass one (106) is fitted in one end of lens barrel one (105) by lens barrel end cap one (107), described
The other end of lens barrel one (105) loads onto installation of the O-ring seal one (108) afterwards on fixed (101) one side of furnace body
In slot one (101a), the mounting groove two (101b) of another side of the fixed furnace body (101) is provided with graphite and bores one (102), institute
It states graphite-pipe (103) to be inserted into one (102) of the graphite cone, the gas path joint one (104) and copper conductor connection terminal
(110) it is mounted in the side end face of the fixed furnace body (101), the water pipe head one (109) is mounted in the fixed furnace body (101)
The base component (4) are protruded into lower end surface.
3. self-adapting type graphite furnace self-locking device as described in claim 1, it is characterised in that: the activity furnace part (2)
Including movable furnace body (201), lens barrel two (204), saturating ultraviolet quartz glass two (205), lens barrel end cap two (203), O-ring seal
Two (206), graphite bore two (207), guiding axis (202), gas path joint two (210), water pipe head two (211), terminal
(212), link mechanism connecting pin (213), holding screw one (214) and O-ring seal three (215)；
The one end of the ultraviolet quartz glass two (205) by lens barrel end cap two (203) press fitting lens barrel two (204), the mirror
The other end of two (204) of cylinder loads onto mounting groove of the O-ring seal two (206) afterwards on (201) one side of the movable furnace body
In three (201a), it is set with O-ring seal three (215) on described activity furnace body (201) another side, graphite is bored two (207) and inserted
In the mounting groove four (201b) of described movable furnace body (201) another side, guiding axis (202) is installed on the travelling oven
On body component (2), link mechanism connecting pin (213) is connected mounted in the movable furnace body (201) with the link mechanism (3).
4. self-adapting type graphite furnace self-locking device as described in claim 1, it is characterised in that: the link mechanism (3) includes
Limit film (301), nut (302), spring (303), crank (304), shaft (305), hinge (306), handle (307), connecting rod
(308) and axis is with snap ring (309)；
The crank (304) passes through from the hole in shaft (305) and hinge (306), is cased with spring on the crank (304)
(303), the crank (304) is locked from one end that hinge (306) passes through using nut (302), is equipped on the shaft (305)
Handle (307), the hinge (306) are connected with connecting rod (308), and the connecting rod (308) is connected with link mechanism connecting pin (213)
It connects, the shaft (305) is on base component (4).
5. self-adapting type graphite furnace self-locking device as described in claim 1, it is characterised in that: the base component (4) includes
Pedestal (401), electric bakelite fixed block (402), linear bearing (403) and holding screw two (404), the linear bearing (403)
It is mounted in the hole of electric bakelite fixed block (402) and is compressed by holding screw two (404), pedestal (401) and electric bakelite are fixed
It is connected between block (402) by screw (405).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721763279.4U CN208206765U (en) | 2017-12-18 | 2017-12-18 | Self-adapting type graphite furnace self-locking device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721763279.4U CN208206765U (en) | 2017-12-18 | 2017-12-18 | Self-adapting type graphite furnace self-locking device |
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| CN208206765U true CN208206765U (en) | 2018-12-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107894397A (en) * | 2017-12-18 | 2018-04-10 | 上海仪电分析仪器有限公司 | Self-adapting type graphite furnace self-locking device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107894397A (en) * | 2017-12-18 | 2018-04-10 | 上海仪电分析仪器有限公司 | Self-adapting type graphite furnace self-locking device |
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