CN111579696A - Miniature chromatographic column box - Google Patents
Miniature chromatographic column box Download PDFInfo
- Publication number
- CN111579696A CN111579696A CN202010554197.9A CN202010554197A CN111579696A CN 111579696 A CN111579696 A CN 111579696A CN 202010554197 A CN202010554197 A CN 202010554197A CN 111579696 A CN111579696 A CN 111579696A
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- motor
- air door
- air
- rotating shaft
- box
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- 238000010438 heat treatment Methods 0.000 claims abstract description 37
- 238000003756 stirring Methods 0.000 claims abstract description 35
- 238000004321 preservation Methods 0.000 claims abstract description 27
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 238000009413 insulation Methods 0.000 claims description 44
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 14
- 238000004587 chromatography analysis Methods 0.000 claims description 12
- 229910052697 platinum Inorganic materials 0.000 claims description 7
- 239000011229 interlayer Substances 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 238000001816 cooling Methods 0.000 abstract description 12
- 230000017525 heat dissipation Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 241000220317 Rosa Species 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/50—Conditioning of the sorbent material or stationary liquid
- G01N30/52—Physical parameters
- G01N30/54—Temperature
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/30—Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Devices For Use In Laboratory Experiments (AREA)
Abstract
The invention discloses a miniature chromatographic column box, which relates to the technical field of chromatographic column boxes and comprises the following components: the side wall of the heat preservation box is provided with an air port; a heating device; the heating device is arranged on the second horizontal supporting plate, and the first horizontal supporting plate is used for supporting the chromatographic column; the stirring assembly comprises a stirring fan and a first motor, the stirring fan is horizontally arranged between the first horizontal supporting plate and the second horizontal supporting plate, and an output shaft of the first motor is in transmission connection with the stirring fan; the air door assembly comprises an air door, a rotating shaft and a second motor, the air door is fixedly connected with the rotating shaft, the rotating shaft is rotatably connected with the air port, and the second motor is in transmission connection with the rotating shaft. The temperature in the miniature chromatographic column box heat-insulating box is uniform, and the rapid cooling in the heat-insulating box can be realized.
Description
Technical Field
The invention relates to the technical field of chromatographic column boxes, in particular to a miniature chromatographic column box.
Background
The gas chromatograph is applied to various fields such as chemical industry, environmental protection and the like, but is generally used in a laboratory due to large volume. The column box of the gas chromatograph accounts for more than 60% of the whole gas chromatograph, and a miniature column box is produced in order to reduce the volume of the gas chromatograph and to make the gas chromatograph easy to carry. However, the existing micro chromatographic column box has the following defects:
1. the temperature inside the heat insulation box is high at a position close to the heating device in the heat insulation box in the heating mode, the temperature at a position far away from the heating device is low, and the temperature inside the heat insulation box is uneven;
2. offer on the current miniature chromatographic column case box and be used for radiating thermovent, realize the inside cooling of insulation can through opening the thermovent, this cooling mode insulation can inside cooling speed is slow, can't realize rapid cooling.
Therefore, it is an urgent problem to provide a micro chromatographic column box capable of achieving uniform temperature inside an incubator and rapid cooling inside the incubator.
Disclosure of Invention
In order to solve the technical problems, the invention provides the miniature chromatographic column box which has uniform temperature inside the heat insulation box and can realize rapid cooling inside the heat insulation box.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a miniature chromatographic column box, comprising: the side wall of the heat preservation box is provided with an air port; the heating device is arranged in the heat insulation box; the support assembly is arranged in the heat insulation box and comprises a first horizontal support plate and a second horizontal support plate which are arranged up and down, the heating device is arranged on the second horizontal support plate, and the first horizontal support plate is used for supporting a chromatographic column; the stirring device comprises a stirring fan and a first motor, the stirring fan is horizontally arranged in the heat insulation box and is arranged between the first horizontal supporting plate and the second horizontal supporting plate, and an output shaft of the first motor is in transmission connection with the stirring fan so as to drive the stirring fan to rotate; the air door assembly comprises an air door, a rotating shaft and a second motor, the air door is fixedly connected with the rotating shaft, the rotating shaft is rotatably connected with the air port, the second motor is in transmission connection with the rotating shaft so as to drive the rotating shaft to rotate, the air door blocks the air port when in a first state, and the air door opens the air port when in a second state; and the temperature measuring device is arranged in the heat insulation box.
Preferably, the pivot level sets up, just the pivot with the middle part fixed connection of air door, when the air door is in vertical position, the air door shutoff the wind gap, when the air door is in horizontal position, the air door is opened the wind gap, and will the wind gap is for gas outlet and the air inlet that sets up from top to bottom.
Preferably, the micro chromatographic column box further comprises a controller, and the heating device, the first motor, the second motor and the temperature measuring device are all electrically connected with the controller.
Preferably, the controller is a PLC controller.
Preferably, the heat preservation box comprises a heat preservation box body and a heat preservation box cover, an opening communicated with the inside of the heat preservation box body is formed in the top end of the heat preservation box body, and the heat preservation box cover is hinged to the top end of the heat preservation box body to open and close the opening.
Preferably, the heating device is a heating wire, and a heating wire rack for fixing the heating wire is arranged on the second horizontal support plate.
Preferably, the heat preservation box body is a ceramic heat preservation box body, and a heat preservation interlayer is arranged in the heat preservation box body.
Preferably, the temperature measuring device is a platinum resistance temperature measuring device.
Preferably, the first motor is a high-temperature motor, and the stirring fan is a stainless steel stirring fan.
Preferably, a plurality of air holes are formed in the first horizontal support plate.
Compared with the prior art, the invention has the following technical effects:
compared with the prior art that the internal temperature of the box body is improved by adopting the heat dissipation and heat productivity of the heating device, the micro chromatographic column box provided by the invention is additionally provided with the stirring fan on the basis of the heating device, and the heat produced by the heating device is uniformly dispersed into the heat insulation box under the stirring action of the stirring fan, so that the internal temperature of the heat insulation box is uniform; compared with the prior art that the heat dissipation is carried out through the heat dissipation port, when the air port of the miniature chromatographic column box is in an open state, the stirring fan works, high-temperature gas in the heat insulation box rapidly penetrates through the air port to be discharged under the driving of fan blades of the stirring fan, so that the temperature in the heat insulation box is rapidly reduced, and the miniature chromatographic column box can achieve rapid cooling in the heat insulation box.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a micro-scale chromatography column box provided in an embodiment of the present invention;
figure 2 is a cross-sectional view of a mini chromatography column cassette provided in an embodiment of the present invention.
Description of reference numerals: 1. a heat preservation box body; 2. a heat preservation box cover; 3. heating wires; 4. heating the wire frame; 5. a first horizontal support plate; 6. a second horizontal support plate; 7. air holes are formed; 8. a stirring fan; 9. a first motor; 10. a damper; 11. a rotating shaft; 12. a second motor; 13. an air outlet; 14. an air inlet; 15. a controller; 16. a platinum resistance temperature measuring device; 17. a heat-insulating interlayer; 18. and (4) opening.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a miniature chromatographic column box which has uniform temperature inside an insulation can and can realize rapid cooling inside the insulation can.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1-2, the present embodiment provides a micro chromatography column box, comprising: the side wall of the heat preservation box is provided with an air port; the heating device is arranged in the heat insulation box; the support assembly is arranged in the incubator and comprises a first horizontal support plate 5 and a second horizontal support plate 6 which are arranged up and down, in the embodiment, the positions of the first horizontal support plate 5 and the second horizontal support plate 6 in the incubator are fixed, the fixing mode can be that the first horizontal support plate 5 and the second horizontal support plate 6 are both fixedly connected with the inner side wall of the incubator, the heating device is arranged on the second horizontal support plate 6, and the first horizontal support plate 5 is used for supporting the chromatographic column; the stirring device comprises a stirring fan 8 and a first motor 9, the stirring fan 8 is horizontally arranged in the heat insulation box, the stirring fan 8 is arranged between the first horizontal supporting plate 5 and the second horizontal supporting plate 6, and an output shaft of the first motor 9 is in transmission connection with the stirring fan 8 so as to drive the stirring fan 8 to rotate; the air door assembly comprises an air door 10, a rotating shaft 11 and a second motor 12, the air door 10 is fixedly connected with the rotating shaft 11, the rotating shaft 11 is rotatably connected with the air port, the second motor 12 is in transmission connection with the rotating shaft 11 to drive the rotating shaft 11 to rotate, when the air door 10 is in a first state, the air door 10 blocks the air port, when the air door 10 is in a second state, the air door 10 opens the air port, and the air door 10 has two states of blocking the air port and opening the air port; and the temperature measuring device is arranged in the heat insulation box. The temperature in the miniature chromatographic column box heat-insulating box is uniform, and the rapid cooling in the heat-insulating box can be realized.
In this embodiment, as shown in fig. 1, the rotating shaft 11 is horizontally disposed, and the rotating shaft 11 is fixedly connected to the middle of the air door 10, when the air door 10 rotates to a vertical position, the air door 10 blocks the air opening, and when the air door 10 rotates to a horizontal position, the air door 10 opens the air opening, and separates the air opening into an air outlet 13 and an air inlet 14 which are vertically disposed. So set up, when air door 10 rotated to the horizontality, outside cold air got into the insulation can inside from air inlet 14, and the inside hot-air of insulation can rose and is discharged from gas outlet 13, forms the air convection, and the inside cooling of insulation can is faster.
In this embodiment, the micro chromatography column box further includes a controller 15, and the heating device, the first motor 9, the second motor 12 and the temperature measuring device are electrically connected to the controller 15. In this embodiment, the controller 15 is specifically a PLC controller. So set up, device degree of automation is high.
In this embodiment, as shown in fig. 1, the thermal insulation box includes a thermal insulation box body 1 and a thermal insulation box cover 2, an opening 18 communicated with the interior of the thermal insulation box body 1 is disposed at the top end of the thermal insulation box body 1, and the thermal insulation box cover 2 is hinged to the top end of the thermal insulation box body 1 to open and close the opening 18. The purpose of the openings 18 is to facilitate access to the column.
In this embodiment, the heating device is a heating wire 3, and in order to fix the heating wire 3, a heating wire rack 4 for fixing the heating wire 3 is disposed on the second horizontal supporting plate 6. The specific structure of the heating wire frame 4 belongs to the prior art, and the structure capable of fixing the heating wire 3 is selected, so that the detailed description is omitted.
In this embodiment, the heat-insulating box 1 is a ceramic heat-insulating box, and a heat-insulating interlayer 17 is disposed inside the heat-insulating box 1. So set up, insulation box 1 keeps warm effectually.
In this embodiment, the temperature measuring device is a platinum resistor temperature measuring device 16. The specific structure of the platinum resistance temperature measuring device 16 is also in the prior art, and is not described in detail herein.
In this embodiment, the first motor 9 is a high temperature motor, and the stirring fan 8 is a stainless stirring fan 8. So set up, first motor 9 and agitator fan 8 long service life.
In the present embodiment, as shown in fig. 2, the first horizontal support plate 5 is provided with a plurality of ventilation holes 7 for allowing gas to pass therethrough. The air in the heat preservation box body 1 penetrates through the air holes 7 to be in contact with the chromatographic column supported on the first horizontal supporting plate 5, and the temperature rising and falling speed of the chromatographic column is improved due to the arrangement of the air holes 7.
In the specific working process of the miniature chromatographic column box provided by the embodiment, the platinum resistance temperature measuring device 16 transmits the detected temperature information in the heat insulation box to the PLC, and the PLC judges the temperature information detected by the platinum resistance temperature measuring device 16. When the temperature in the heat preservation box is lower than the specific temperature, the PLC controls the heating wires 3 to heat, and simultaneously controls the first motor 9 to start working, the first motor 9 drives the stirring fan 8 to rotate, and the fan blades of the stirring fan 8 uniformly disperse heat into the heat preservation box. After heating to a specific temperature, the PLC controller continuously controls the temperature inside the heat preservation box. When the temperature in the heat preservation box is higher than the specific temperature, the PLC controls the heating wire 3 to stop working, and simultaneously controls the second motor 12 to start working, the second motor 12 drives the rotating shaft 11 to rotate, the rotating shaft 11 drives the air door 10 to synchronously rotate, when the air door 10 rotates to the horizontal position, the PLC controls the second motor 12 to stop working, at the moment, the air door 10 separates the air opening into an air outlet 13 and an air inlet 14 which are arranged up and down, the outside cold air enters the heat preservation box from the air inlet 14, the hot air in the heat preservation box rises and is discharged from the air outlet 13, the air convection is formed, and the temperature in the heat preservation box quickly drops to the specific temperature. In addition, it should be noted that the stirring fan 8 is always operated during the temperature reduction process inside the heat preservation box body 1, and the stirring fan 8 plays a role in accelerating the gas flow. The stirring fan 8 is matched with air convection to realize rapid cooling of the interior of the heat preservation box body 1.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (10)
1. A micro chromatography column cassette, comprising:
the side wall of the heat preservation box is provided with an air port;
the heating device is arranged in the heat insulation box;
the support assembly is arranged in the heat insulation box and comprises a first horizontal support plate and a second horizontal support plate which are arranged up and down, the heating device is arranged on the second horizontal support plate, and the first horizontal support plate is used for supporting a chromatographic column;
the stirring device comprises a stirring fan and a first motor, the stirring fan is arranged in the heat insulation box and horizontally arranged between the first horizontal supporting plate and the second horizontal supporting plate, and an output shaft of the first motor is in transmission connection with the stirring fan so as to drive the stirring fan to rotate;
the air door assembly comprises an air door, a rotating shaft and a second motor, the air door is fixedly connected with the rotating shaft, the rotating shaft is rotatably connected with the air port, the second motor is in transmission connection with the rotating shaft so as to drive the rotating shaft to rotate, the air door blocks the air port when in a first state, and the air door opens the air port when in a second state;
and the temperature measuring device is arranged in the heat insulation box.
2. The micro chromatographic column box according to claim 1, wherein the rotating shaft is horizontally arranged, the rotating shaft is fixedly connected with the middle part of the air door, when the air door is in a vertical position, the air door blocks the air port, and when the air door is in a horizontal position, the air door opens the air port and divides the air port into an air outlet and an air inlet which are vertically arranged.
3. The micro chromatography column cassette of claim 1, further comprising a controller, wherein the heating device, the first motor, the second motor, and the temperature measuring device are electrically connected to the controller.
4. The micro chromatography column cassette of claim 3, wherein said controller is a PLC controller.
5. The micro chromatographic column box according to claim 1, wherein the thermal insulation box comprises a thermal insulation box body and a thermal insulation box cover, an opening communicated with the interior of the thermal insulation box body is formed in the top end of the thermal insulation box body, and the thermal insulation box cover is hinged to the top end of the thermal insulation box body to open and close the opening.
6. The micro chromatography column box of claim 1, wherein the heating device is a heating wire, and a heating wire rack for fixing the heating wire is arranged on the second horizontal support plate.
7. The micro chromatography column box of claim 1, wherein the incubator body is a ceramic incubator body, and an insulating interlayer is arranged inside the incubator body.
8. The micro chromatography column cassette of claim 1, wherein the temperature measuring device is a platinum resistance temperature measuring device.
9. The micro chromatography column cassette of claim 1, wherein the first motor is a high temperature motor and the stirrer fan is a stainless steel stirrer fan.
10. The micro chromatography column cassette of claim 1, wherein the first horizontal support plate has a plurality of vent holes formed therein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010554197.9A CN111579696A (en) | 2020-06-17 | 2020-06-17 | Miniature chromatographic column box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010554197.9A CN111579696A (en) | 2020-06-17 | 2020-06-17 | Miniature chromatographic column box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111579696A true CN111579696A (en) | 2020-08-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010554197.9A Pending CN111579696A (en) | 2020-06-17 | 2020-06-17 | Miniature chromatographic column box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111579696A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112255360A (en) * | 2020-11-11 | 2021-01-22 | 上海磐诺仪器有限公司 | Hearth structure of gas chromatograph and rapid cooling method of gas chromatograph |
| CN112595798A (en) * | 2020-12-15 | 2021-04-02 | 南京工业职业技术大学 | Miniature chromatographic column box |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4752216A (en) * | 1984-12-03 | 1988-06-21 | The Perkin-Elmer Corporation | Programmed temperature control of a thermal system |
| JPH07325074A (en) * | 1994-05-31 | 1995-12-12 | Shimadzu Corp | Gas chromatograph oven |
| CN2840035Y (en) * | 2005-11-24 | 2006-11-22 | 上海神开科技工程有限公司 | Double-side opening door chromatographic column box |
| CN201740187U (en) * | 2010-08-09 | 2011-02-09 | 苏州昆拓冷机有限公司 | Special cabinet air conditioner |
| CN207488245U (en) * | 2017-10-25 | 2018-06-12 | 河南三方元泰检测技术有限公司 | A kind of efficient gas chromatograph |
| CN210442324U (en) * | 2019-08-28 | 2020-05-01 | 苏州重水测试科技有限公司 | Gas chromatography column incubator with good heat dissipation performance |
| CN212483488U (en) * | 2020-06-17 | 2021-02-05 | 台州市创导科学仪器有限公司 | Miniature chromatographic column box |
-
2020
- 2020-06-17 CN CN202010554197.9A patent/CN111579696A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4752216A (en) * | 1984-12-03 | 1988-06-21 | The Perkin-Elmer Corporation | Programmed temperature control of a thermal system |
| JPH07325074A (en) * | 1994-05-31 | 1995-12-12 | Shimadzu Corp | Gas chromatograph oven |
| CN2840035Y (en) * | 2005-11-24 | 2006-11-22 | 上海神开科技工程有限公司 | Double-side opening door chromatographic column box |
| CN201740187U (en) * | 2010-08-09 | 2011-02-09 | 苏州昆拓冷机有限公司 | Special cabinet air conditioner |
| CN207488245U (en) * | 2017-10-25 | 2018-06-12 | 河南三方元泰检测技术有限公司 | A kind of efficient gas chromatograph |
| CN210442324U (en) * | 2019-08-28 | 2020-05-01 | 苏州重水测试科技有限公司 | Gas chromatography column incubator with good heat dissipation performance |
| CN212483488U (en) * | 2020-06-17 | 2021-02-05 | 台州市创导科学仪器有限公司 | Miniature chromatographic column box |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112255360A (en) * | 2020-11-11 | 2021-01-22 | 上海磐诺仪器有限公司 | Hearth structure of gas chromatograph and rapid cooling method of gas chromatograph |
| CN112595798A (en) * | 2020-12-15 | 2021-04-02 | 南京工业职业技术大学 | Miniature chromatographic column box |
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