CN215894189U - Graphite digestion instrument - Google Patents
Graphite digestion instrument Download PDFInfo
- Publication number
- CN215894189U CN215894189U CN202121855780.XU CN202121855780U CN215894189U CN 215894189 U CN215894189 U CN 215894189U CN 202121855780 U CN202121855780 U CN 202121855780U CN 215894189 U CN215894189 U CN 215894189U
- Authority
- CN
- China
- Prior art keywords
- heating
- graphite
- digestion
- exhaust
- frame body
- 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.)
- Expired - Fee Related
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- 230000029087 digestion Effects 0.000 title claims abstract description 51
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 34
- 239000010439 graphite Substances 0.000 title claims abstract description 34
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 238000010438 heat treatment Methods 0.000 claims abstract description 73
- 238000009423 ventilation Methods 0.000 claims abstract description 28
- 238000001816 cooling Methods 0.000 claims abstract description 24
- 238000009434 installation Methods 0.000 claims description 3
- 239000002253 acid Substances 0.000 abstract description 11
- 230000017525 heat dissipation Effects 0.000 abstract description 5
- 239000000523 sample Substances 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000009616 inductively coupled plasma Methods 0.000 description 2
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 239000006101 laboratory sample Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000000209 wet digestion Methods 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The graphite digestion instrument provided by the utility model has a simple structure, can ensure that the digestion tubes are uniformly heated and are conveniently taken out, can accelerate the heat dissipation and cooling of the instrument after digestion is finished, improves the efficiency, and can treat acid gas through a simple exhaust device. The specific scheme is as follows: a graphite digestion instrument comprises an exhaust hood, a mainframe box and a graphite heating body, wherein the graphite heating body comprises a heating base and a heating frame body, and the heating frame body is provided with a plurality of digestion tube placing holes; the heating base is provided with cylindrical seats which correspond to the placing holes one by one, the upper end surface of each cylindrical seat is a circular surface attached to the bottom of the digestion tube, the diameter of each cylindrical seat is the same as that of the placing hole, and the cylindrical seats on the heating base are embedded into the bottom end of the placing holes from the lower part and can move relative to the heating frame body; the heating frame body is directly covered by the cover opening of the exhaust cover, the exhaust cover is communicated with a pipeline, an exhaust fan is arranged at the joint of the pipeline and the exhaust cover, and one end of the pipeline, which is far away from the exhaust fan, is communicated with a lye tank; and a ventilation cooling device is arranged on the side wall of the main case.
Description
Technical Field
The utility model relates to the field of electronic equipment, in particular to a graphite digestion instrument.
Background
The graphite digestion instrument is mainly applied to the pretreatment work of digestion, heating and acid dispelling of laboratory samples such as environment, food, research and development, project manufacturing and the like, and the treated samples are matched with matched detection equipment such as: the atomic absorption spectrometer, the atomic fluorescence spectrometer, the inductively coupled plasma emission spectrometer, the inductively coupled plasma mass spectrometer and the liquid chromatograph, the gas chromatograph and other analysis instruments perform sample analysis and detection. The graphite digestion instrument generates heat through the graphite block to generate high temperature, and the sample put into the digestion tube is subjected to high-temperature digestion, so that the user can define the required temperature, and the instrument can automatically and uniformly heat the temperature to the specified temperature and then continuously heat the sample at constant temperature.
The appearance is cleared up to current graphite all has the function that the accuse temperature was cleared up, clears up the pipe body in some equipment and can have very big partly be higher than the graphite piece, leads to the heating inhomogeneous, and clears up when the pipe body all is wrapped up by the graphite piece basically, clears up back body temperature higher, and the experimenter of being not convenient for takes out, clears up the graphite heater temperature of accomplishing back very high moreover, and the heat dissipation is slow, and the cooling time is of a specified duration, can not carry out the operation of clearing up of next batch fast.
In the existing wet digestion, oxidizing strong acid such as nitric acid, perchloric acid, sulfuric acid and the like is added into a sample, a large amount of harmful acid gas is easily generated in the digestion process, and direct discharge causes certain pollution and harm to bodies of technicians engaged in the detection for a long time. The existing acid gas digestion treatment systems are complex in structure, high in cost and inconvenient to operate.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art, provides the graphite digestion instrument which is simple in structure, can ensure that the digestion tubes are uniformly heated and are conveniently taken out, can accelerate the heat dissipation and cooling of the instrument after digestion is finished, and improves the experimental efficiency.
The utility model is realized by the following technical scheme:
a graphite digestion instrument comprises an exhaust hood, a mainframe box and a graphite heating body arranged in the mainframe box, and is characterized in that the graphite heating body comprises a heating base and a heating frame body, and the heating frame body is provided with a plurality of digestion tube placing holes;
the heating base is provided with cylindrical seats which correspond to the placing holes one by one, the upper end surface of each cylindrical seat is a circular surface attached to the bottom of the digestion tube, the diameter of each cylindrical seat is the same as that of the placing hole, and the cylindrical seats on the heating base are embedded into the bottom end of the placing holes from the lower part and can move relative to the heating frame body; clear up the pipe and put into and place the hole after, the bottom is cleared up intraductal cylinder seat and is supported to because the cylinder seat can reciprocate placing downthehole relative heating framework, just having about the area and clear up the pipe and also can prevent downthehole reciprocating.
The heating frame body is directly covered by a cover opening of the exhaust cover, the exhaust cover is communicated with a pipeline, an exhaust fan is arranged at the joint of the pipeline and the exhaust cover, and one end of the pipeline, which is far away from the exhaust fan, is communicated with the lye tank; when the digestion is carried out, the exhaust hood covers the heating frame body, and the generated harmful acid gas is exhausted to the lye tank through the exhaust fan.
And a ventilation cooling device is arranged below the mainframe box.
Further, the heating base is fixed in position, and the heating frame body can move up and down relative to the heating base, so that the cylindrical seat can move up and down relative to the placing hole.
Furthermore, the heating frame body is fixed in position, and the heating base can move up and down relative to the heating base, so that the cylindrical base can move up and down in the placing hole.
Further, the heating base or the heating frame moves by lifting with a screw rod lifter.
Further, ventilation cooling device includes fan support frame, servo motor and ventilation fan, the fan support frame passes through bolted connection at the mainframe box, the fan support frame passes through bolted connection servo motor, and ventilation fan fixed connection is on the servo motor output shaft, the box shell cloth of ventilation cooling device installation department has ventilation hole or ventilation grid.
Further, the main cabinet is provided with two ventilation cooling devices which are respectively arranged below two opposite sides of the main cabinet.
Furthermore, the lower edge of the exhaust hood is provided with air holes so as to balance the air pressure inside and outside the exhaust hood.
Further, the exhaust hood is provided with an observation window, and digestion states can be observed so as to prevent evaporation to dryness.
Preferably, the lye tank is arranged on the exhaust hood and is integrated with the exhaust hood.
Compared with the prior art, the utility model has the following advantages:
the base part and the frame part of the graphite heating body are divided, and the base can move up and down relatively in the placing hole by utilizing the lifting mechanism, so that the digestion tube can move up and down, the digestion tube can be basically immersed in the hole for heating, and can be pushed out to be conveniently taken out for cooling, and the operation is simple;
the ventilation cooling device is arranged, the heating base completely exits from the placing hole after the digestion pipe is taken out, the ventilation cooling device works, air flow can pass through the placing hole from bottom to top, graphite heat dissipation is accelerated, cooling is accelerated, digestion of the next batch of samples can be started when the temperature is reduced to be proper, and working efficiency is improved; and because of heating the framework and the base separable, made things convenient for the clearance of placing the hole, make the device can keep good heating effect for a long time.
The exhaust hood for treating the acid gas is simple in structure, can effectively treat the acid gas and observe digestion conditions, reduces pollution and harm to experimenters, and is simple in structure and low in cost.
Drawings
FIG. 1 is a schematic view of the internal structure of the main cabinet according to the present invention;
FIG. 2 is a schematic view of a lead screw elevator supporting a heating frame of the present invention;
FIG. 3 is a schematic view of the exhaust hood of the present invention.
Description of the symbols: 1-main case, 2-graphite heating body, 21-heating base, 22-cylindrical seat, 23-heating frame body, 24-placing hole, 3-ventilation cooling device, 31-servo motor, 32-fan supporting frame, 33-ventilation fan, 4-exhaust hood, 41-pipeline, 42-exhaust fan, 43-lye tank, 44-observation window, 45-air hole, 46-hood opening and 5-screw rod lifter.
Detailed Description
The utility model is further described below with reference to the accompanying drawings:
a graphite digestion instrument comprises an exhaust hood, a mainframe box and a graphite heating body arranged in the mainframe box, and is characterized in that the graphite heating body comprises a heating base and a heating frame body, and the heating frame body is provided with a plurality of digestion tube placing holes;
the heating base is provided with cylindrical seats which correspond to the placing holes one by one, the upper end surface of each cylindrical seat is a circular surface attached to the bottom of the digestion tube, the diameter of each cylindrical seat is the same as that of the placing hole, and the cylindrical seats on the heating base are embedded into the bottom end of the placing holes from the lower part and can move relative to the heating frame body; after the digestion tubes are placed in the placing holes, the bottoms of the digestion tubes are supported by the cylindrical seats in the digestion tubes, and the cylindrical seats can move up and down relative to the heating frame body in the placing holes, so that the digestion tubes can also be prevented from moving up and down in the holes, and the digestion tubes can be immersed in the placing holes below the tube openings during heating digestion, so that the digestion tubes are uniformly heated; clear up and make the cylinder seat for placing the hole one section distance that rises after finishing, make clear up the pipe and be released and place the hole and make things convenient for the experimenter to take out the cooling.
Preferably, this embodiment heating frame body and mainframe box relatively fixed, have the lead screw lift to support and adjust its height below the heating base, make it can reciprocate for the heating base to make and clear up the pipe and can reciprocate in placing the downthehole.
The utility model can also fix the position of the heating base, and the screw rod lifter is supported at four corners below the heating frame body, and the height of the screw rod lifter is adjusted to ensure that the screw rod lifter can move up and down relative to the heating base, thereby enabling the placing hole to move up and down relative to the digestion tube.
A ventilation cooling device is arranged on the side wall of the main case; ventilation cooling device includes fan support frame, servo motor and ventilation fan, the fan support frame passes through bolted connection at the mainframe box, the fan support frame passes through bolted connection servo motor, and ventilation fan fixed connection is on the servo motor output shaft, the box shell cloth of ventilation cooling device installation department has ventilation hole or ventilation grid to circulate with the air feed stream, takes out and clears up behind the pipe, adjusts elevating gear and makes the cylinder seat withdraw from completely and place the hole, opens ventilation cooling device, and the air current circulates and dispels the heat through placing the hole from supreme down in the mainframe box, cooling down with higher speed, just can begin clearing up of next batch of samples when the temperature drops to suitable, has improved work efficiency.
The mainframe box is preferably provided with two ventilation cooling devices which are respectively arranged on two opposite sides of the mainframe box, so that the heat dissipation is more uniform.
The exhaust hood is communicated with a pipeline, an exhaust fan is arranged at the joint of the pipeline and the exhaust hood, one end of the pipeline, which is far away from the exhaust fan, is led to the lye tank, air holes are distributed on the lower edge of the exhaust hood to balance the air pressure inside and outside the exhaust hood, and an observation window is arranged on the side wall of the exhaust hood and can observe the digestion state to prevent evaporation to dryness;
preferably, in this embodiment, the lye tank is disposed on the exhaust hood and is integrated with the exhaust hood, and the lye tank can be removed from the exhaust hood and periodically replaced.
When acid is cleared up, the exhaust hood is placed above the main case, the hood opening is directly covered on the heating frame body, all the clearing pipes are covered, and the exhaust fan is started to exhaust the generated acid gas and absorb the acid gas in the lye tank.
Claims (8)
1. A graphite digestion instrument comprises an exhaust hood, a mainframe box and a graphite heating body arranged in the mainframe box, and is characterized in that the graphite heating body comprises a heating base and a heating frame body, and the heating frame body is provided with a plurality of digestion tube placing holes;
the heating base is provided with cylindrical seats which correspond to the placing holes one by one, the upper end surface of each cylindrical seat is a circular surface attached to the bottom of the digestion tube, the diameter of each cylindrical seat is the same as that of the placing hole, and the cylindrical seats on the heating base are embedded into the bottom end of the placing holes from the lower part and can move relative to the heating frame body;
the heating frame body is directly covered by a cover opening of the exhaust cover, the exhaust cover is communicated with a pipeline, an exhaust fan is arranged at the joint of the pipeline and the exhaust cover, and one end of the pipeline, which is far away from the exhaust fan, is communicated with a lye tank;
and a ventilation cooling device is arranged on the side wall of the main case.
2. The graphite digestion apparatus according to claim 1, wherein the heating base is fixed in position, and the heating frame body is movable up and down relative to the heating base, so that the cylindrical base is movable up and down relative to the placing hole.
3. The graphite digestion apparatus according to claim 1, wherein the heating frame body is fixed in position, and the heating base can move up and down relative to the heating base, so that the cylindrical base can move up and down in the placing hole.
4. The graphite digestion apparatus according to the claims 2 or 3, wherein the heating base or the heating frame is moved up and down by a screw rod lifter.
5. The graphite digestion instrument according to claim 1, wherein the ventilation cooling device comprises a fan support frame, a servo motor and an air delivery fan blade, the fan support frame is connected to the mainframe box through bolts, the fan support frame is connected to the servo motor through bolts, the air delivery fan blade is fixedly connected to an output shaft of the servo motor, and ventilation holes or ventilation grids are distributed on a box body shell at the installation position of the ventilation cooling device.
6. The graphite digestion apparatus according to claim 1, wherein the main housing has two ventilation cooling means disposed on opposite sides of the main housing.
7. The graphite digestion instrument according to claim 1, wherein the lower edge of the exhaust hood is provided with air holes.
8. The graphite digestion apparatus according to claim 1, wherein the exhaust hood is provided with a viewing window.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121855780.XU CN215894189U (en) | 2021-08-10 | 2021-08-10 | Graphite digestion instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121855780.XU CN215894189U (en) | 2021-08-10 | 2021-08-10 | Graphite digestion instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215894189U true CN215894189U (en) | 2022-02-22 |
Family
ID=80502297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121855780.XU Expired - Fee Related CN215894189U (en) | 2021-08-10 | 2021-08-10 | Graphite digestion instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215894189U (en) |
-
2021
- 2021-08-10 CN CN202121855780.XU patent/CN215894189U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20220222 |
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| CF01 | Termination of patent right due to non-payment of annual fee |