CN114705778B - Air cooling device for gas chromatograph - Google Patents
Air cooling device for gas chromatograph Download PDFInfo
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- CN114705778B CN114705778B CN202210348792.6A CN202210348792A CN114705778B CN 114705778 B CN114705778 B CN 114705778B CN 202210348792 A CN202210348792 A CN 202210348792A CN 114705778 B CN114705778 B CN 114705778B
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- air
- fixedly connected
- air inlet
- shell
- flow channel
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- 238000001816 cooling Methods 0.000 title claims abstract description 35
- 230000007246 mechanism Effects 0.000 claims abstract description 21
- 239000000428 dust Substances 0.000 claims abstract description 18
- 238000001914 filtration Methods 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims description 26
- 238000007790 scraping Methods 0.000 claims description 21
- 239000000696 magnetic material Substances 0.000 claims description 8
- 230000004907 flux Effects 0.000 claims description 5
- 239000007769 metal material Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 12
- 238000001514 detection method Methods 0.000 abstract description 6
- 238000009434 installation Methods 0.000 description 10
- 230000017525 heat dissipation Effects 0.000 description 6
- 239000000758 substrate Substances 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D1/00—Devices using naturally cold air or cold water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
-
- 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
- G01N30/62—Detectors specially adapted therefor
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Immunology (AREA)
- Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pathology (AREA)
- Analytical Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention belongs to the field of gas chromatographs, and particularly relates to an air cooling device for a gas chromatograph, which comprises a shell, wherein an incubator and a detector are arranged in the shell, an air inlet pipe is fixedly connected to the outer side wall of the shell, an exhaust fan is fixedly arranged in the air inlet pipe, a dust filtering mechanism is arranged at the air inlet end of the air inlet pipe, and the output end of the air inlet pipe extends into the shell and is fixedly provided with a cooling mechanism; the cooling mechanism comprises a mounting seat fixedly connected to the inner wall of the shell, a guide cover is fixedly connected to the side wall of the mounting seat, the detector is positioned in the guide cover and fixedly arranged on the mounting seat, and an air flow channel is arranged in the mounting seat. The invention can provide uniform and sufficient cooling for the inside of the shell, ensures the normal working temperature of the detector, filters dust in the air by the filter screen, prevents the influence on the detection result, and can automatically clean the filter screen after the working is finished, thereby avoiding the influence on the cooling effect caused by the blockage of the filter screen.
Description
Technical Field
The invention belongs to the field of gas chromatographs, and particularly relates to an air cooling device for a gas chromatograph.
Background
In the fields of industry, chemistry and the like, various experimental instruments are often used for researching and discussing substances, and various objects in the atmosphere cannot be deeply researched by naked eyes, so that various experimental research instruments are sequentially pushed out and widely used, and the gas chromatograph is widely applied.
By searching, the national patent publication number CN106483206B discloses a gas chromatograph comprising: a temperature adjusting part for adjusting the temperature in the incubator and a substrate for the detector connected to the detector. The temperature adjusting section is disposed on the back side in the housing, and the detector substrate is disposed on the front side in the housing. That is, the detector substrate is disposed at a position in the housing that is not affected by heat generated by the temperature adjusting unit. This can prevent the detector substrate from being affected by heat generated by the temperature adjusting unit. As a result, the detection signal of the detector can be processed with high accuracy by the detector substrate.
The following disadvantages exist in the above scheme:
according to the scheme, the outside air is sucked by the fan and enters the frame body for cooling, the air inlet position is fixed, so that dead angles exist when the air flows in the frame body, and the inside of the frame body is difficult to uniformly and fully cool; when the detection work is carried out, the staff walks back and forth, dust on the ground is easy to carry and fly into the air, the dust can be sucked into the frame body along with the air, the detection work is influenced, and even safety accidents such as circuit short circuit and the like can be caused.
Disclosure of Invention
The invention aims at solving the problems in the background art and provides an air cooling device for a gas chromatograph, which has good cooling effect and can prevent dust from entering.
In order to achieve the above purpose, the present invention adopts the following technical scheme: the air cooling device for the gas chromatograph comprises a shell, wherein a constant temperature box and a detector are arranged in the shell, an air inlet pipe is fixedly connected to the outer side wall of the shell, an exhaust fan is fixedly arranged in the air inlet pipe, a dust filtering mechanism is arranged at the air inlet end of the air inlet pipe, and the output end of the air inlet pipe extends into the shell and is fixedly provided with a cooling mechanism;
the cooling mechanism comprises a mounting seat fixedly connected to the inner wall of the shell, a guide cover is fixedly connected to the side wall of the mounting seat, the detector is positioned in the guide cover and is fixedly arranged on the mounting seat, an air flow channel is arranged in the mounting seat, two sealing sliding blocks are arranged in the air flow channel in a sealing sliding manner, accommodating grooves matched with the sealing sliding blocks are formed in the side walls of the two sides of the air flow channel, the side walls of the sealing sliding blocks are connected with the sealing sliding blocks, when the sealing sliding blocks are positioned in the accommodating grooves, the air flow channel is opened, and a driving mechanism for driving the two sealing sliding blocks to slide is arranged in the air flow channel;
the driving mechanism comprises a swinging ring which is connected in an airflow channel in a sliding manner, connecting rods are connected to the two sides of the swinging ring in a rotating manner through pin shafts, one ends of the two connecting rods, which are far away from the swinging ring, are respectively hinged with the side walls of the two sealing sliding blocks, cams are arranged in the swinging ring and slide against the inner wall of the swinging ring, rotating rods are fixedly connected to the cams, and one ends of the rotating rods extend into the air inlet pipe and are fixedly connected with wind wheels.
Further, the air guide sleeve is made of metal materials, and the cross section of the air guide sleeve is of a semicircular structure.
Further, the air flow channel is of a structure, the output end of the air inlet pipe is communicated with the middle of the air flow channel, the two exhaust ends of the air flow channel are positioned on two sides of the air guide sleeve, and the exhaust direction of the air flow channel is parallel to the tangential direction of the air guide sleeve.
Further, the dust filtering mechanism comprises a fixing ring which is fixedly connected to the air inlet end of the air inlet pipe, a filter screen is fixedly arranged in the fixing ring, two vertical scraping rods are arranged on the surface of the filter screen, the middle parts of the two scraping rods are rotationally connected through a pin shaft, and the two scraping rods are connected through a spring.
Further, one end of the scraping rod is fixedly connected with a sliding block, the other end of the scraping rod is fixedly connected with a permanent magnet block, an annular groove is formed in the fixing ring, and the sliding block and the permanent magnet block are both in sliding connection in the annular groove.
Furthermore, the slide blocks are embedded with electromagnetic coils, and shielding shells are sleeved outside the electromagnetic coils.
Further, the wind wheel is formed by arranging a plurality of blades in an annular array, one blade of the wind wheel is made of magnetic materials, an installation box is fixedly connected to the inner wall of the air inlet pipe, two electrode plates are fixedly connected to the inner wall of the installation box, the two electrode plates are opposite to each other and are not contacted with each other, a spiral conductive wire is arranged in the installation box, two ends of the spiral conductive wire are respectively connected with the electrode plates, and when the wind wheel rotates, the blades made of the magnetic materials in the wind wheel periodically sweep the installation box, so that magnetic flux in the spiral conductive wire changes, induced current is generated, and the two electrode plates are charged.
Further, fixedly connected with slide tube on the dwang, fixedly connected with fixed block on the slide tube inside wall, the both sides of fixed block are connected with two conductive ball through the elasticity rope respectively, two the electrode plate is respectively through two conductive ball and solenoid electric connection.
The invention has the following advantages:
1. according to the invention, the exhaust fan works, so that external air sequentially enters the shell through the air inlet pipe and the air flow channel, the inside of the shell is cooled, the temperature is regulated, and when air flow is blown out from the output end of the air flow channel by arranging the guide cover, the air flow can flow on the surface of the guide cover due to the coanda effect, so that good heat dissipation is provided for the guide cover, and the normal working temperature of the detector is ensured;
and through two sealed sliders reciprocating sliding in the air current passageway for two gas outlets of air current passageway are opened and close in turn, and the periodic change air gets into the position of casing, is favorable to the inside even abundant heat dissipation of casing, promotes the cooling effect.
2. According to the invention, the dust and sundries in the air entering the shell can be filtered out by arranging the filter screen, so that pollution caused by entering the shell is avoided, and the detection result is influenced.
3. According to the invention, the electrode plates and the electromagnetic coils are arranged, when the wind wheel rotates, the fan blades made of magnetic materials in the wind wheel periodically sweep through the mounting box, so that the magnetic flux in the spiral conductive wire is changed, induced current is generated, the two electrode plates are charged and stored, power is provided for cleaning the filter screen, and other power driving devices are not required.
4. According to the invention, the scraping rods, the electromagnetic coil and the permanent magnet are arranged, so that attractive force can be generated on the permanent magnet when the electromagnetic coil is electrified, the two scraping rods are enabled to rotate close to each other, accumulated dust on the surface of the filter screen is scraped, the filter screen is cleaned, and the influence on the cooling effect caused by the blockage of the filter screen by the dust is avoided;
and the on-off of the electromagnetic coil is controlled through the two conductive balls, so that the aim of automatically cleaning the filter screen after the cooling operation is finished is fulfilled, and the labor intensity is reduced.
Drawings
Fig. 1 is a schematic structural diagram of an air cooling device for a gas chromatograph provided by the invention;
fig. 2 is a schematic view of the internal structure of a mounting seat and an air inlet pipe in an air cooling device for a gas chromatograph;
FIG. 3 is a side perspective view of a mounting base in an air cooling device for a gas chromatograph according to the present invention;
FIG. 4 is an enlarged view at A in FIG. 2;
FIG. 5 is an enlarged view at B in FIG. 2;
FIG. 6 is a schematic side view of a fixing ring in an air cooling device for a gas chromatograph according to the present invention;
fig. 7 is an enlarged view of fig. 6 at C.
In the figure, a shell body 1, a constant temperature box 2, a detector 3, an air inlet pipe 4, an exhaust fan 5, an installation seat 6, a guide cover 7, an air flow channel 8, a sealing sliding block 9, an accommodating groove 10, a swinging ring 11, a connecting rod 12, a cam 13, a rotating rod 14, a wind wheel 15, a fixed ring 16, a filter screen 17, a scraping rod 18, a spring 19, a sliding block 20, a permanent magnet block 21, an annular groove 22, an electromagnetic coil 23, an installation box 24, an electrode plate 25, a spiral conductive wire 26, a sliding tube 27, a fixed block 28, an elastic rope 29 and a conductive ball 30 are arranged.
Detailed Description
As shown in fig. 1-7, an air cooling device for a gas chromatograph comprises a shell 1, wherein a constant temperature box 2 and a detector 3 are arranged in the shell 1, an air outlet is formed in the side wall of the shell 1, an air inlet pipe 4 is fixedly connected to the outer side wall of the shell 1, an exhaust fan 5 is fixedly arranged in the air inlet pipe 4, a dust filtering mechanism is arranged at the air inlet end of the air inlet pipe 4, and the output end of the air inlet pipe 4 extends into the shell 1 and is fixedly provided with a cooling mechanism.
The cooling mechanism comprises a mounting seat 6 fixedly connected to the inner wall of the shell 1, a guide cover 7 is fixedly connected to the side wall of the mounting seat 6, the detector 3 is located in the guide cover 7 and fixedly arranged on the mounting seat 6, an air flow channel 8 is arranged in the mounting seat 6, two sealing sliding blocks 9 are arranged in the air flow channel 8 in a sealing sliding mode, accommodating grooves 10 matched with the sealing sliding blocks 9 are formed in the side walls of the two sides of the air flow channel 8, the side walls of the sealing sliding blocks 9 are connected with each other, when the sealing sliding blocks 9 are located in the accommodating grooves 10, the air flow channel 8 is opened, and a driving mechanism used for driving the two sealing sliding blocks 9 to slide is arranged in the air flow channel 8.
The driving mechanism comprises a swinging ring 11 which is slidably connected in the air flow channel 8, two sides of the swinging ring 11 are rotatably connected with connecting rods 12 through pin shafts, one ends of the two connecting rods 12, which are far away from the swinging ring 11, are respectively hinged with the side walls of the two sealing sliding blocks 9, a cam 13 is arranged in the swinging ring 11, the cam 13 and the inner wall of the swinging ring 11 are in propping sliding, a rotating rod 14 is fixedly connected to the cam 13, one end of the rotating rod 14 extends into the air inlet pipe 4 and is fixedly connected with a wind wheel 15, the wind wheel 15 can rotate under the blowing of air flow, the two sealing sliding blocks 9 are driven to synchronously slide in the air flow channel 8, the two air outlets of the air flow channel 8 are alternately opened and closed, the positions of air entering the shell 1 are periodically changed, the uniform and full heat dissipation inside the shell 1 is facilitated, and the cooling effect is improved.
The air guide sleeve 7 is made of metal material, has good heat conducting performance, can rapidly guide out the temperature in the detector 3, and the cross section of the air guide sleeve 7 is of a semicircular structure.
The air flow channel 8 is -shaped, the output end of the air inlet pipe 4 is communicated with the middle part of the air flow channel 8, the two exhaust ends of the air flow channel 8 are positioned on two sides of the air guide cover 7, the exhaust direction of the air flow channel 8 is parallel to the tangential direction of the air guide cover 7, and when air flow is blown out from the output end of the air flow channel 8, the air flow can flow on the surface of the air guide cover 7 due to the coanda effect, so that good heat dissipation is provided for the air guide cover 7, and the normal working temperature of the detector 3 is ensured.
The dust filtering mechanism comprises a fixed ring 16 fixedly connected to the air inlet end of the air inlet pipe 4, a filter screen 17 is fixedly arranged in the fixed ring 16, two vertical scraping rods 18 are arranged on the surface of the filter screen 17, dust accumulated on the surface of the filter screen 17 can be scraped by the scraping rods 18 when the scraping rods rotate, the middle parts of the two scraping rods 18 are rotationally connected through a pin shaft, and the two scraping rods 18 are connected through a spring 19.
One end of one scraping rod 18 is fixedly connected with a sliding block 20, one end of the other scraping rod 18 is fixedly connected with a permanent magnet block 21, an annular groove 22 is formed in the fixed ring 16, and the sliding block 20 and the permanent magnet block 21 are both in sliding connection with the annular groove 22.
The slider 20 is embedded with the electromagnetic coil 23, and the electromagnetic coil 23 can produce a magnetic field when being electrified, and produces a magnetic attraction effect on the permanent magnet block 21, and the electromagnetic coil 23 is sleeved with the shielding shell 1, so that the magnetic field produced when the electromagnetic coil 23 is electrified points to the direction of the permanent magnet block 21, and the magnetic attraction force is enhanced.
The wind wheel 15 is formed by arranging a plurality of blades in an annular array, one blade of the wind wheel 15 is made of magnetic materials, an installation box 24 is fixedly connected to the inner wall of the air inlet pipe 4, two electrode plates 25 are fixedly connected to the inner wall of the installation box 24, the two electrode plates 25 are opposite and do not contact with each other, a spiral conductive wire 26 is arranged in the installation box 24, two ends of the spiral conductive wire 26 are respectively connected with the electrode plates 25, and when the wind wheel 15 rotates, the blades made of the magnetic materials in the wind wheel 15 periodically sweep the installation box 24, so that magnetic flux in the spiral conductive wire 26 changes, induced current is generated, and the two electrode plates 25 are charged.
The rotating rod 14 is fixedly connected with a slide tube 27, the inner side wall of the slide tube 27 is fixedly connected with a fixed block 28, two sides of the fixed block 28 are respectively connected with two conductive balls 30 through elastic ropes 29, the two electrode plates 25 are respectively electrically connected with the electromagnetic coil 23 through the two conductive balls 30, the elastic ropes 29 are in contact with the two conductive balls 30 in a natural state, so that a circuit between the electromagnetic coil 23 and the two electrode plates 25 is communicated, when the rotating rod 14 rotates, the two conductive balls 30 are far away under the centrifugal effect, the circuit of the electromagnetic coil 23 is disconnected, and the electrode plates 25 can be charged and stored continuously.
When the detector is used, the exhaust fan 5 works, so that external air sequentially enters the shell through the air inlet pipe 4 and the air flow channel 8 to cool the inside of the shell 1, the temperature is regulated, when the air is blown out from the output end of the air flow channel 8, as the two exhaust ends of the air flow channel 8 are positioned at the two sides of the air guide cover 7, and the exhaust direction of the air flow channel 8 is parallel to the tangential direction of the air guide cover 7, when the air is blown out from the output end of the air flow channel 8, the air flows on the surface of the air guide cover 7 due to the coanda effect, so that good heat dissipation is provided for the air guide cover 7, and the normal working temperature of the detector 3 is ensured;
when the air flow flows in the air inlet pipe 4, the wind wheel 15 can be driven to rotate, the wind wheel 15 drives the cam 13 to rotate through the rotating rod 14, the protruding part of the cam 13 slides on the swinging ring 11 to drive the swinging ring 11 to swing reciprocally, then the connecting rod 12 drives the two sealing sliding blocks 9 to slide reciprocally in the air flow channel 8 synchronously, the two sealing sliding blocks 9 slide into the accommodating groove 10 alternately, so that the two air outlets of the air flow channel 8 are opened and closed alternately, the position of the air entering the shell 1 is changed periodically, the uniform and sufficient heat dissipation inside the shell 1 is facilitated, and the cooling effect is improved.
When the air inlet pipe 4 is used for air inlet, the filter screen 17 can filter dust and sundries in the air entering the shell 1, so that pollution caused by entering the shell 1 is avoided, and the detection result is influenced.
When the wind wheel 15 rotates, the rotating rod 14 drives the sliding tube 27 to rotate, at the moment, the two conductive balls 30 are far away under the centrifugal action, so that the circuit of the electromagnetic coil 23 is disconnected, and the fan blades made of magnetic materials in the wind wheel 15 periodically sweep through the mounting box 24, so that the magnetic flux in the spiral conductive wire 26 changes, induced current is generated, the two electrode plates 25 are charged and stored, and power is provided for cleaning the filter screen 17 without setting other power driving devices.
When the exhaust fan 5 stops working, the rotating rod 14 stops rotating, the two conductive balls 30 are close to and contact with each other under the action of the elastic force of the elastic rope 29, so that the electromagnetic coil 23 is communicated with a circuit between the two electrode plates 25, attractive force is generated to the permanent magnet block 21 when the electromagnetic coil 23 is electrified, the two scraping rods 18 rotate to be close to each other, accumulated dust on the surface of the filter screen 17 is scraped, the filter screen 17 is cleaned, and the filter screen 17 is prevented from being blocked by dust, so that the cooling effect is influenced.
Claims (6)
1. The air cooling device for the gas chromatograph comprises a shell (1), wherein an incubator (2) and a detector (3) are arranged in the shell (1), and is characterized in that an air inlet pipe (4) is fixedly connected to the outer side wall of the shell (1), an exhaust fan (5) is fixedly arranged in the air inlet pipe (4), a dust filtering mechanism is arranged at the air inlet end of the air inlet pipe (4), and the output end of the air inlet pipe (4) extends into the shell (1) and is fixedly provided with a cooling mechanism;
the cooling mechanism comprises a mounting seat (6) fixedly connected to the inner wall of the shell (1), a guide cover (7) is fixedly connected to the side wall of the mounting seat (6), the detector (3) is positioned in the guide cover (7) and fixedly arranged on the mounting seat (6), an air flow channel (8) is arranged in the mounting seat (6), two sealing sliding blocks (9) are hermetically sliding in the air flow channel (8), accommodating grooves (10) matched with the sealing sliding blocks (9) are arranged on the side walls of two sides of the air flow channel (8), when the sealing sliding blocks (9) are positioned in the accommodating grooves (10), the air flow channel (8) is opened, and a driving mechanism for driving the two sealing sliding blocks (9) to slide is arranged in the air flow channel (8);
the driving mechanism comprises a swinging ring (11) which is slidably connected in the airflow channel (8), connecting rods (12) are rotatably connected to two sides of the swinging ring (11) through pin shafts, one ends of the two connecting rods (12) far away from the swinging ring (11) are hinged to the side walls of the two sealing sliding blocks (9) respectively, a cam (13) is arranged in the swinging ring (11), the cam (13) slides against the inner wall of the swinging ring (11), a rotating rod (14) is fixedly connected to the cam (13), and one ends of the rotating rods (14) extend into the air inlet pipe (4) and are fixedly connected with a wind wheel (15);
the air guide sleeve (7) is made of metal materials, and the cross section of the air guide sleeve (7) is of a semicircular structure;
the air flow channel (8) is of a structure, the output end of the air inlet pipe (4) is communicated with the middle part of the air flow channel (8), the two exhaust ends of the air flow channel (8) are positioned on two sides of the air guide cover (7), and the exhaust direction of the air flow channel (8) is parallel to the tangential direction of the air guide cover (7);
when the air flow flows in the air inlet pipe (4), the wind wheel (15) can be driven to rotate, the wind wheel (15) drives the cam (13) to rotate through the rotating rod (14), the protruding part of the cam (13) slides on the swinging ring (11) to drive the swinging ring (11) to swing reciprocally, then the connecting rod (12) drives the two sealing sliding blocks (9) to slide reciprocally in the air flow channel (8) synchronously, the two sealing sliding blocks (9) slide into the accommodating groove (10) alternately, and the two air outlets of the air flow channel (8) are opened and closed alternately, so that the position of the air entering the shell (1) is changed periodically.
2. The air cooling device for the gas chromatograph according to claim 1, wherein the dust filtering mechanism comprises a fixed ring (16) fixedly connected to an air inlet end of the air inlet pipe (4), a filter screen (17) is fixedly arranged in the fixed ring (16), two vertical scraping rods (18) are arranged on the surface of the filter screen (17), the middle parts of the two scraping rods (18) are rotationally connected through a pin shaft, and the two scraping rods (18) are connected through a spring (19).
3. The air cooling device for the gas chromatograph according to claim 2, wherein one end of one scraping rod (18) is fixedly connected with a sliding block (20), one end of the other scraping rod (18) is fixedly connected with a permanent magnet block (21), an annular groove (22) is arranged in the fixed ring (16), and the sliding block (20) and the permanent magnet block (21) are both in sliding connection in the annular groove (22).
4. An air cooling device for a gas chromatograph according to claim 3, wherein the sliders (20) are embedded with electromagnetic coils (23), and a shielding shell is sleeved outside the electromagnetic coils (23).
5. The air cooling device for the gas chromatograph according to claim 4, wherein the wind wheel (15) is formed by arranging a plurality of blades in an annular array, one blade of the wind wheel (15) is made of a magnetic material, a mounting box (24) is fixedly connected to the inner wall of the air inlet pipe (4), two electrode plates (25) are fixedly connected to the inner wall of the mounting box (24), the two electrode plates (25) are opposite and do not contact with each other, a spiral conductive wire (26) is arranged in the mounting box (24), two ends of the spiral conductive wire (26) are respectively connected with the electrode plates (25), and when the wind wheel (15) rotates, the blades made of the magnetic material in the wind wheel (15) periodically sweep the mounting box (24) so that magnetic flux in the spiral conductive wire (26) changes, and induced current is generated to charge the two electrode plates (25).
6. The air cooling device for the gas chromatograph according to claim 5, wherein a slide tube (27) is fixedly connected to the rotating rod (14), a fixed block (28) is fixedly connected to the inner side wall of the slide tube (27), two conductive balls (30) are respectively connected to two sides of the fixed block (28) through elastic ropes (29), and the two electrode plates (25) are respectively and electrically connected with the electromagnetic coil (23) through the two conductive balls (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210348792.6A CN114705778B (en) | 2022-04-01 | 2022-04-01 | Air cooling device for gas chromatograph |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210348792.6A CN114705778B (en) | 2022-04-01 | 2022-04-01 | Air cooling device for gas chromatograph |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114705778A CN114705778A (en) | 2022-07-05 |
| CN114705778B true CN114705778B (en) | 2024-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210348792.6A Active CN114705778B (en) | 2022-04-01 | 2022-04-01 | Air cooling device for gas chromatograph |
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| CN (1) | CN114705778B (en) |
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| CN213544482U (en) * | 2020-11-02 | 2021-06-25 | 福建省莆阳检测有限公司 | Gas chromatograph heat sink |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114705778A (en) | 2022-07-05 |
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