CN112858545B - Chromatograph capable of adjusting carrier gas flow rate and using method thereof - Google Patents
Chromatograph capable of adjusting carrier gas flow rate and using method thereof Download PDFInfo
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- CN112858545B CN112858545B CN202110222061.2A CN202110222061A CN112858545B CN 112858545 B CN112858545 B CN 112858545B CN 202110222061 A CN202110222061 A CN 202110222061A CN 112858545 B CN112858545 B CN 112858545B
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- 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
- G01N30/26—Conditioning of the fluid carrier; Flow patterns
- G01N30/28—Control of physical parameters of the fluid carrier
- G01N30/32—Control of physical parameters of the fluid carrier of pressure or speed
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/16—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
- G01M3/18—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
- G01M3/184—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators for valves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
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- 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
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/16—Injection
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
- G01N2001/1418—Depression, aspiration
- G01N2001/1427—Positive displacement, piston, peristaltic
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- 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
- G01N30/26—Conditioning of the fluid carrier; Flow patterns
- G01N30/28—Control of physical parameters of the fluid carrier
- G01N30/32—Control of physical parameters of the fluid carrier of pressure or speed
- G01N2030/324—Control of physical parameters of the fluid carrier of pressure or speed speed, flow rate
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Abstract
The invention discloses a chromatograph capable of adjusting carrier gas flow rate and a using method thereof. When the air pressure in the carrier gas tank is insufficient, a user rotates the first screw rod through the operation block to drive the first screw rod to move downwards to extrude the movable shaft to move downwards, so that the adjusting plate moves downwards until the adjusting plate covers the front end of the perforation, the perforation is reduced, the air flow speed is accelerated, the impact force of the carrier gas is improved, the predicted effect cannot be achieved due to insufficient air pressure, the accuracy of a detection result is improved, the carrier gas can be used as far as possible, and the waste of the carrier gas is reduced.
Description
Technical Field
The invention relates to the technical field of chromatographs, in particular to a chromatograph capable of adjusting the flow rate of carrier gas and a using method thereof.
Background
A chromatograph is an apparatus for performing chromatographic separation analysis. Comprises a sample introduction system, a detection system, a recording and data processing system, a temperature control system, a mobile phase control system and the like. Modern chromatographs have the characteristics of high stability, sensitivity, versatility, high degree of automation and the like. There are gas chromatography, liquid chromatography, gel chromatography, and the like. These chromatographs are widely used for analyzing a certain content of a chemical product or a polymer material, and gel chromatography can also measure the molecular weight and distribution of the polymer material.
Present chromatograph need utilize the carrier gas to detect work when using, and current carrier gas is stored through a jar body, the internal atmospheric pressure of jar when using can reduce gradually, gas pressure is not enough when leading to follow-up use, thereby reduce the accuracy nature of testing result, the carrier gas leakage takes place easily in the jar body hookup location of equipment when using simultaneously, lead to the waste of carrier gas raw materials, and the raw materials interpolation of chromatograph goes on through the syringe when using, and present syringe is syringe lower extreme position can residual part gas when sample detection, occupy sample volume, make the sample volume of interpolation be less than the range estimation data, can lead to the testing result inaccuracy.
Disclosure of Invention
The present invention is directed to a chromatograph capable of adjusting a flow rate of a carrier gas and a method for using the same, which solve the problems of the background art mentioned above.
In order to achieve the purpose, the invention provides the following technical scheme: a chromatograph capable of adjusting the flow rate of carrier gas comprises a chromatograph main body, a gas carrier tank and a gasification chamber, wherein a storage box is fixedly arranged at the front end of the chromatograph main body, a sampling mechanism is arranged at the inner part of the storage box, a prompt lamp is fixedly arranged at the front end of the chromatograph main body, a control panel is fixedly embedded at the right side position of the front end of the chromatograph main body, a protection mechanism is arranged at the front end of the control panel, a fixing mechanism is arranged at the lower end position of the chromatograph main body, a placement groove is arranged at the left side position inside the chromatograph main body, a sealing plate is movably arranged at the left side position of the chromatograph main body, the gas carrier tank is arranged at the inner position of the placement groove, a trigger mechanism is arranged at the lower end position inside the placement groove, a connecting valve is fixedly arranged at the upper end of the gas carrier tank, the device is characterized in that a hard tube is fixedly arranged at the right side end of the connecting valve, a pressure gauge is fixedly arranged at the right side end of the hard tube, a hose is fixedly arranged at the upper end of the pressure gauge, a hollow block is fixedly arranged at the center of the hard tube, a screw hole is formed at the upper end of the chromatograph main body, a first screw rod is arranged at the inner position of the screw hole in a threaded and inserting manner and moves up and down along the screw hole by rotation, an operating block is fixedly welded at the upper end of the first screw rod, the screw hole is convenient to rotate by the operating block, anti-skid threads are arranged at the outer side end position of the operating block in a surrounding manner, a movable shaft is movably arranged at the lower end of the first screw rod in an inserting manner and rotates around the central shaft of the movable shaft, an adjusting plate is fixedly welded at the lower end of the movable shaft, and a fixing plate is fixedly arranged at the inner part of the hollow block, the utility model discloses a chromatograph main body, including fixed plate, regulating plate, cavity, injection hole, detector, air carrier jar, regulation plate, signal amplifier, the fixed position of regulation plate front end has seted up a plurality of and has perforated, the regulating plate is located the fixed plate front end position, cavity upper end position has seted up the cavity, the inside position bonding of cavity is fixed and is provided with the rubber ring, the regulating plate activity passes rubber ring central point and puts to be convenient for sealed regulating plate and rubber ring contact position, the inside fixed position installation of chromatograph main body is provided with the vaporizer, the injection hole has been seted up to vaporizer upper end position, the fixed interlude of vaporizer lower extreme position is provided with the coiled pipe, coiled pipe right side position fixed mounting is provided with the detector, detector right side position fixed mounting is provided with signal amplifier, when the inside atmospheric pressure of air carrier jar is not enough during the use, and the user rotates first screw rod through the operation piece, drives first screw rod downstream extrusion loose axle downstream, thereby makes the regulating plate downstream, covers at perforated front end position for the perforation diminishes, thereby makes the air current speed accelerate, improves the impact force of carrier gas, prevents that atmospheric pressure is not enough from reaching the prediction effect, improves the detection result accuracy, guarantees simultaneously that the carrier gas can be used as far as possible, reduces the waste.
Preferably, trigger mechanism includes box body, cell body, elastic membrane and trigger switch, the inside lower extreme fixed mounting in resettlement groove is provided with the box body, the inside lower extreme fixed mounting in box body is provided with trigger switch, trigger switch and warning light electric connection, the cell body has been seted up to box body upper end position, the inside fixed elastic membrane that is provided with of position bonding of cell body, when the connecting valve takes place to leak, the atmospheric pressure of resettlement inslot portion increases for the elastic membrane is to the inside inflation of box body, thereby extrudees trigger switch, makes the warning light lighted, thereby the carrier gas jar of the inside of user's resettlement groove takes place to leak, and the person of facilitating the use in time handles, thereby avoids a large amount of leakage waste of carrier gas.
Preferably, sampling mechanism includes sampling tube, rectangle piece, presses briquetting, movable rod, vertical pole, spacing ring, spring, extension piece, piston block, injection tube, rubber buffer and positioning mechanism, it is provided with the sampling tube to store box internal position arrangement, sampling tube lower extreme position fixed mounting is provided with the injection tube, sampling tube left side position level welded fastening is provided with the extension piece, it is provided with vertical pole to extend a central point position activity interlude, vertical pole upper end position fixed mounting is provided with presses the briquetting, vertical pole right side upper end position vertical fixed mounting is provided with the rubber buffer, the rubber buffer is located the injection tube internal position, vertical pole outside end position encircles fixed mounting and is provided with the spacing ring, position movable mounting is provided with the spring between spacing ring lower extreme and the extension piece upper end, the spring encircles and sets up in vertical pole outside end position, the sampling tube internal position activity joint is provided with the piston block, piston block upper end position vertical fixed mounting is provided with the movable rod, and movable rod upper end position extends to the sampling tube upper end outside, movable rod upper end position fixed mounting is provided with the rectangle piece, movable rod internal position is provided with positioning mechanism.
Preferably, positioning mechanism includes third screw rod, toper piece, locating piece, sealing rubber pad and vertical groove, vertical groove has been seted up to the movable rod internal position, movable rod central point puts and is provided with the third screw rod through the screw thread interlude, third screw rod upper end extends to rectangle piece upper end position, and the lower extreme extends to vertical inslot position, vertical groove both sides position horizontal activity interlude is provided with the locating piece, the movable rod bonds with locating piece contact position and fixedly is provided with sealing rubber pad, third screw rod lower extreme position fixed mounting is provided with the toper piece, the extrusion of toper piece outside end position is in locating piece inboard end position, extends sampling tube lower extreme injection tube to inside the sample liquid, then user's rebound movable rod for piston piece rebound, until sample volume position, then rotate the third screw rod, make third screw rod rebound drive toper piece rebound, extrude the locating piece to the outside and push sampling tube inside position, make the movable rod position fixed, the inside vacuum that forms of sampling tube, then the user pushes vertical pole through the upset down extrusion of spacing ring, make the spacing ring push away from the rubber buffer to drive the injection plug, the injection tube internal portion drives the injection plug with the extrusion sampling tube inside to push away from the extrusion sampling tube, and the injection hole, and the injection tube internal portion is prevented to rotate the sample solution and the injection tube and rotate the injection tube and the sample solution and to pass through the sample injection hole of gasification detection result and rotate the sample solution and accomplish the sample injection and rotate the sample tube and not to the sample injection tube.
Preferably, protection machanism includes rectangular channel, closing plate and operation groove, the rectangular channel has been seted up to chromatograph main part front position, the inside left side position activity joint of rectangular channel is provided with the closing plate, and the closing plate slides along the rectangular channel horizontal slip, the operation groove has been seted up to the closing plate front position, slides the closing plate through the operation groove left side when using, can make the control panel position expose, facilitates the use, and the user can make the closing plate shelter from at the control panel front position to right side sliding seal board through the operation groove when idle to the convenience is protected control panel.
Preferably, the fixing mechanism comprises a wheel shaft, a moving wheel, a bottom plate, a second screw, a rubber block, a driving wheel, a driving belt and a rotating block, the bottom plate is horizontally and fixedly welded to the lower end of the chromatograph main body, the wheel shaft is movably inserted and arranged at the two side end positions of the bottom plate, the moving wheel is fixedly arranged around the wheel shaft, the moving wheel facilitates the movement of the whole chromatograph main body, the second screw is arranged at the two side end positions of the bottom plate in an inserted and arranged mode through threads, the rotating block is fixedly arranged at the upper end position of the second screw in a welded mode, anti-slip threads are arranged at the outer side end position of the rotating block in an surrounded mode, the rubber block is fixedly arranged at the lower end position of the second screw in a bonded mode, the driving wheel is fixedly arranged at the outer side end position of the second screw in a surrounded mode, the driving belt is arranged at the position between the driving wheels, and after the chromatograph main body moves to a target position, a user rotates the second screw through the rotating block to enable the second screw to move downwards, and simultaneously synchronously rotates through the driving wheel and the adjacent second screw in a linked mode until the rubber block extrudes the ground position, so that the chromatograph main body is fixed and the chromatograph main body is convenient to use.
Preferably, the pressure gauge is fixedly embedded at the front end of the chromatograph main body.
Preferably, the signal amplifier is electrically connected with the control panel, so that the detection signal is conveniently transmitted to the inside of the control panel.
A use method of a chromatograph capable of adjusting the flow rate of carrier gas specifically comprises the following steps:
the first step is as follows: after the chromatograph main body moves to the target position, a user rotates the second screw rod through the rotating block to enable the second screw rod to move downwards, meanwhile, the transmission wheel and the transmission belt are linked to enable the adjacent second screw rod to synchronously rotate until the rubber block extrudes the ground position, so that the chromatograph main body is fixed and convenient to use, the sealing plate is slid leftwards through the operation groove, the position of the control panel can be exposed and is convenient to use, when the chromatograph main body is idle, the sealing plate can be shielded at the front position of the control panel by sliding the sealing plate to the right side through the operation groove, and therefore the control panel is protected conveniently;
the second step: when the air pressure in the carrier gas tank is insufficient during use, a user rotates the first screw rod through the operation block to drive the first screw rod to move downwards to extrude the movable shaft to move downwards, so that the adjusting plate moves downwards until the adjusting plate covers the front end of the perforation, the perforation is reduced, the air flow speed is accelerated, the impact force of carrier gas is improved, the predicted effect cannot be achieved due to insufficient air pressure, the accuracy of a detection result is improved, the carrier gas can be used as far as possible, and the waste of the carrier gas is reduced;
the third step: extending a lower end injection pipe of a sampling pipe to the inside of sample liquid, moving a movable rod upwards by a user, enabling a piston block to move upwards until a sampling volume position, rotating a third screw rod, enabling the third screw rod to move downwards to drive a conical block to move downwards, enabling an extrusion positioning block to move outwards to extrude the inner side wall position of the sampling pipe, enabling the movable rod position to be fixed, simultaneously enabling the inside of the sampling pipe to form vacuum, then enabling the user to extrude a vertical rod downwards through a pressing block, enabling a limiting ring to extrude a spring to a compression state, and driving a rubber plug to be separated from the inside of the injection pipe, sucking a solution into the inner position of the sampling pipe under the action of negative pressure, completing sampling work, effectively preventing residual air in the sampling pipe from occupying sampling volume to cause inaccurate detection result by utilizing the rubber plug to plug the injection pipe, rotating the vertical rod after sampling is completed, enabling the rubber plug to rotate to a left side position, and then injecting the solution into a gasification chamber through an injection hole to perform gasification work;
the fourth step: when the connecting valve leaks, the air pressure in the arranging groove is increased, the elastic membrane expands towards the inside of the box body, the trigger switch is extruded, the prompt lamp is lightened, the gas-carrying tank in the arranging groove is prompted to leak, the user can conveniently and timely handle the leakage, and therefore the waste of a large amount of carrier gas leakage is avoided.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the first screw rod moves downwards to extrude the movable shaft through the operation block, so that the adjusting plate moves downwards to cover the front position of the perforation, and the perforation is reduced, thereby accelerating the air flow speed, realizing the flow speed adjustment, improving the impact force of carrier gas, preventing insufficient air pressure from reaching the expected effect, improving the accuracy of a detection result, ensuring that the carrier gas can be used as far as possible, and reducing the waste of the carrier gas;
2. according to the invention, the air pressure in the containing groove is increased due to the leakage of the connecting valve, so that the elastic membrane expands towards the interior of the box body, the trigger switch is extruded, the prompt lamp is lightened, external personnel can know the leakage condition for processing conveniently, and the waste of a large amount of carrier gas leakage is avoided;
3. according to the invention, the injection pipe is inserted into a sample liquid, then the movable rod is moved upwards to move the piston block to a sampling volume position, then the third screw rod drives the conical block to move downwards to cause the positioning block to extrude the inner side wall of the sampling pipe, so that the movable rod is fixed, and simultaneously vacuum is formed in the sampling pipe, then the limiting ring extrudes the spring to a compression state through the pressing block, and drives the rubber plug to be separated from the injection pipe, the solution is sucked into the inner position of the sampling pipe under the action of negative pressure to finish sampling work, the injection pipe is blocked by the rubber plug, the phenomenon that the sampling volume is occupied by residual air in the sampling pipe to cause inaccurate detection results is effectively prevented, the vertical rod is rotated after sampling is finished, the rubber plug is rotated to a left position, and then the solution can be injected into the gasification chamber through the injection hole to perform gasification work.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a chromatograph with adjustable carrier gas flow rate according to the present invention;
fig. 2 is a schematic view of the installation of a carrier gas tank in a chromatograph capable of adjusting the flow rate of a carrier gas according to the present invention;
FIG. 3 is a right side sectional view of a chromatograph body of an adjustable carrier gas flow rate chromatograph according to the present invention;
FIG. 4 is a schematic diagram of a sampling mechanism of a chromatograph with adjustable carrier gas flow rate according to the present invention;
FIG. 5 is a schematic view of a mounting plate for a chromatograph according to the present invention, with a carrier gas flow rate adjustable;
FIG. 6 is a schematic view of the structure A1 in FIG. 4 according to the present invention.
In the figure: 1. a chromatograph main body; 2. a pressure gauge; 3. a warning light; 4. a storage box; 5. a rectangular groove; 6. a control panel; 7. sealing plates; 8. an operation slot; 9. a base plate; 10. a wheel axle; 11. a motion wheel; 12. a second screw; 13. a rubber block; 14. a driving wheel; 15. a transmission belt; 16. rotating the block; 17. a placing groove; 18. a closing plate; 19. a screw hole; 20. a carrier gas tank; 21. a connecting valve; 22. a hollow block; 23. a fixing mechanism; 24. a rigid tube; 25. a hose; 26. a box body; 27. a trough body; 28. an elastic film; 29. a trigger switch; 30. a gasification chamber; 31. an injection hole; 32. a serpentine tube; 33. a detector; 34. a signal amplifier; 35. a first screw; 36. an operation block; 37. a movable shaft; 38. a cavity; 39. a rubber ring; 40. a fixing plate; 41. perforating; 42. an adjusting plate; 43. a sampling tube; 44. an injection pipe; 45. a piston block; 46. a movable rod; 47. a rectangular block; 48. a pressing block; 49. a vertical rod; 50. a limiting ring; 51. a spring; 52. an extension block; 53. a rubber plug; 54. a third screw; 55. a conical block; 56. a vertical slot; 57. positioning blocks; 58. sealing the rubber pad; 59. a protection mechanism; 60. a trigger mechanism; 61. a sampling mechanism; 62. a positioning mechanism.
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.
Referring to fig. 1-6, the present invention provides a technical solution: a chromatograph capable of adjusting carrier gas flow rate comprises a chromatograph main body 1, a carrier gas tank 20 and a gasification chamber 30, wherein a storage box 4 is fixedly arranged at the front end of the chromatograph main body 1, a sampling mechanism 61 is arranged at the internal position of the storage box 4, a prompt lamp 3 is fixedly arranged at the front end of the chromatograph main body 1, a control panel 6 is fixedly arranged at the right side position of the front end of the chromatograph main body 1 in an embedded manner, a protection mechanism 59 is arranged at the front end of the control panel 6, a fixing mechanism 23 is arranged at the lower end of the chromatograph main body 1, a placement groove 17 is formed at the left side position inside the chromatograph main body 1, a sealing plate 18 is movably arranged at the left side position of the chromatograph main body 1, the carrier gas tank 20 is arranged at the internal position of the placement groove 17, a trigger mechanism 60 is arranged at the lower end of the inside of the placement groove 17, and a connecting valve 21 is fixedly arranged at the upper end of the carrier gas tank 20, a hard tube 24 is fixedly arranged at the right side end of the connecting valve 21, a pressure gauge 2 is fixedly arranged at the right side end of the hard tube 24, the pressure gauge 2 is fixedly embedded at the front end of the chromatograph main body 1, a hose 25 is fixedly arranged at the upper end of the pressure gauge 2, a hollow block 22 is fixedly arranged at the center of the hard tube 24, a screw hole 19 is formed at the upper end of the chromatograph main body 1, a first screw rod 35 is inserted and arranged at the inner position of the screw hole 19 through threads, the first screw rod 35 moves up and down along the screw hole 19 through rotation, an operation block 36 is fixedly welded at the upper end of the first screw rod 35, the operation block 36 facilitates the rotation of the screw hole 19, anti-skid threads are arranged at the outer side end of the operation block 36 in a surrounding manner, and a movable shaft 37 is movably inserted and arranged at the lower end of the first screw rod 35, the movable shaft 37 rotates around a central shaft of the movable shaft 37, an adjusting plate 42 is fixedly welded at the lower end position of the movable shaft 37, a fixed plate 40 is fixedly installed inside the hollow block 22, a plurality of through holes 41 are formed in the front end position of the fixed plate 40, the adjusting plate 42 is located at the front end position of the fixed plate 40, a cavity 38 is formed in the upper end position of the hollow block 22, a rubber ring 39 is fixedly bonded and fixedly arranged inside the cavity 38, the adjusting plate 42 movably penetrates through the center position of the rubber ring 39 so as to seal the contact position of the adjusting plate 42 and the rubber ring 39, a vaporizing chamber 30 is fixedly installed inside the chromatograph main body 1, an injection hole 31 is formed in the upper end position of the vaporizing chamber 30, a coil tube 32 is fixedly and alternately arranged at the lower end position of the vaporizing chamber 30, a detector 33 is fixedly installed at the right end position of the coil tube 32, a signal amplifier 34 is fixedly installed at the right end position of the detector 33 and electrically connected with the control panel 6 so as to facilitate transmission of a detection signal to the inside of the control panel 6, when the internal air pressure inside the air tank 20 is insufficient, a user rotates the first screw 35 to drive the first screw 35 to move the movable shaft 37 downward, so as to increase the extrusion force, the air flow rate, the air pressure of the carrier gas is increased, and the air flow rate is reduced, thereby increasing the accuracy of the carrier gas flow rate of the carrier gas is increased, and the carrier gas is reduced, and the carrier gas flow rate is reduced.
Sampling mechanism 61 includes sampling tube 43, rectangular block 47, presses movable rod 48, movable rod 46, vertical pole 49, spacing ring 50, spring 51, extension block 52, piston block 45, injection pipe 44, rubber buffer 53 and positioning mechanism 62, it is provided with sampling tube 43 to store 4 internal position arrangements of box, sampling tube 43 lower extreme position fixed mounting is provided with injection pipe 44, sampling tube 43 left side end position level welded fastening is provided with extension block 52, extension block 52 central point position activity interlude is provided with vertical pole 49, vertical pole 49 upper end position fixed mounting is provided with presses movable rod 48, vertical pole 49 right side upper end position vertical fixed mounting is provided with rubber buffer 53, rubber buffer 53 is located injection pipe 44 internal position, vertical pole 49 outside end position encircles fixed mounting and is provided with spacing ring 50, position movable mounting is provided with spring 51 between spacing ring 50 lower extreme and the extension block 52 upper end, spring 51 encircles and sets up in vertical pole 49 outside end position, sampling tube 43 internal position movable block joint is provided with piston block 45, piston block 45 upper end position vertical pole 46 is provided with movable rod 46, and extends movable rod 46 the movable rod 46 on the movable rod 43 and extends the fixed mounting position and is provided with the outside the movable rod 46 the sampling tube 46.
The positioning mechanism 62 comprises a third screw rod 54, a conical block 55, a positioning block 57, a sealing rubber gasket 58 and a vertical groove 56, a vertical groove 56 is arranged in the inner position of the movable rod 46, a third screw 54 is arranged in the center of the movable rod 46 through threaded penetration, the upper end of the third screw rod 54 extends to the upper end position of the rectangular block 47, the lower end extends to the inner position of the vertical groove 56, positioning blocks 57 are horizontally and movably inserted at the two side ends of the vertical groove 56, a sealing rubber pad 58 is fixedly bonded at the contact position of the movable rod 46 and the positioning blocks 57, the lower end of the third screw 54 is fixedly provided with a conical block 55, the outer end of the conical block 55 is extruded at the inner end of the positioning block 57, the lower end injection tube 44 of the sampling tube 43 is extended to the interior of the sample liquid, the user then moves the movable rod 46 upwardly, causing the plunger block 45 to move upwardly, until the sample volume position, then the third screw rod 54 is rotated, so that the third screw rod 54 moves downwards to drive the conical block 55 to move downwards, the extrusion positioning block 57 moves outwards to extrude the inner side wall position of the sampling tube 43, so that the position of the movable rod 46 is fixed, and simultaneously, vacuum is formed in the sampling tube 43, the user then presses the vertical rod 49 downward by the pressing block 48, so that the retainer ring 50 presses the spring 51 to a compressed state, and drives the rubber stopper 53 out of the inside of the injection tube 44, the solution is sucked into the inner position of the sampling tube 43 under the action of negative pressure to finish the sampling work, the rubber plug 53 is utilized to block the injection tube 44 to effectively prevent the residual air in the sampling tube 43 from occupying the sampling volume to cause the inaccurate detection result, the vertical rod 49 is rotated after the sampling is finished to ensure that the rubber plug 53 is rotated to the left position, then, the solution is injected into the vaporizing chamber 30 through the injection hole 31 through the injection pipe 44 to perform a vaporizing operation.
The fixing mechanism 23 comprises a wheel shaft 10, a moving wheel 11, a bottom plate 9, a second screw 12, a rubber block 13, a transmission wheel 14, a transmission belt 15 and a rotating block 16, the bottom plate 9 is horizontally and fixedly welded to the lower end of the chromatograph body 1, the wheel shaft 10 is movably inserted and arranged at the two side end positions of the bottom plate 9, the moving wheel 11 is fixedly arranged at the outer side position of the front end of the wheel shaft 10 in a surrounding mode, the moving wheel 11 facilitates the movement of the whole chromatograph body 1, the second screw 12 is arranged at the two side end positions of the bottom plate 9 in a penetrating mode through threads, the rotating block 16 is fixedly welded to the upper end position of the second screw 12, anti-skid grains are arranged at the outer side end position of the rotating block 16 in a surrounding mode, the rubber block 13 is fixedly bonded to the lower end position of the second screw 12, the transmission belt 14 is fixedly arranged at the outer side end position of the second screw 12 in a surrounding mode, the transmission belt 15 is arranged between the transmission wheels 14 in a surrounding mode, and after the chromatograph body 1 moves to the target position, a user rotates the second screw 12 through the rotating block 16 to enable the second screw 12 to move downwards and simultaneously to be linked with the adjacent second screw 15 through the transmission wheel 14 until the rubber block 13 synchronously rotates to extrude the ground position of the chromatograph body 13, so that the chromatograph body 1 is conveniently used and the chromatograph body 1.
A use method of a chromatograph capable of adjusting carrier gas flow rate specifically comprises the following steps:
the first step is as follows: after the chromatograph main body 1 moves to a target position, a user rotates the second screw 12 through the rotating block 16 to enable the second screw 12 to move downwards, and simultaneously the second screw 12 is linked with the driving belt 15 through the driving wheel 14 to rotate synchronously until the rubber block 13 extrudes the ground position, so that the chromatograph main body 1 is fixed and the use of the chromatograph main body is facilitated, the sealing plate 7 is slid leftwards through the operation groove 8, so that the position of the control panel 6 is exposed and the use is facilitated, when the chromatograph main body is idle, the user can slide the sealing plate 7 rightwards through the operation groove 8 to enable the sealing plate 7 to be shielded at the front end position of the control panel 6, so that the control panel 6 is protected conveniently;
the second step is that: when the air pressure in the carrier gas tank 20 is insufficient during use, a user rotates the first screw rod 35 through the operation block 36 to drive the first screw rod 35 to move downwards to extrude the movable shaft 37 to move downwards, so that the adjusting plate 42 moves downwards until the adjusting plate 42 covers the front end of the perforation 41, the perforation 41 is reduced, the air flow speed is accelerated, the impact force of carrier gas is improved, the predicted effect cannot be achieved due to insufficient air pressure, the accuracy of a detection result is improved, meanwhile, the carrier gas can be used as far as possible, and the waste of the carrier gas is reduced;
the third step: extending the injection tube 44 at the lower end of the sampling tube 43 into the sample liquid, moving the movable rod 46 upwards by a user to move the piston block 45 upwards until reaching a sampling volume position, rotating the third screw 54 to move the third screw 54 downwards to drive the conical block 55 to move downwards, moving the extrusion positioning block 57 outwards to extrude the inner side wall position of the sampling tube 43, fixing the position of the movable rod 46, forming vacuum in the sampling tube 43, pressing the vertical rod 49 downwards by the user through the pressing block 48 to press the spring 51 to a compressed state by the limiting ring 50, driving the rubber plug 53 to be separated from the inside of the injection tube 44, sucking the solution into the position inside of the sampling tube 43 under the action of negative pressure to finish sampling work, and blocking the injection tube 44 by the rubber plug 53 to effectively prevent residual air in the sampling tube 43 from occupying the sampling volume to cause inaccurate detection result, rotating the vertical rod 49 after sampling is finished to rotate the rubber plug 53 to a left position, and injecting the solution into the gasification chamber 30 through the injection hole 31 through the injection tube 44 to gasify work;
the fourth step: when connecting valve 21 takes place to leak, the inside atmospheric pressure of resettlement groove 17 increases for elastic membrane 28 is to the inside inflation of box body 26, thereby extrudees trigger switch 29, makes warning light 3 lighted, thereby the suggestion user resettlement groove 17 inside year gas pitcher takes place to leak, and the person of facilitating the use in time handles, thereby avoids a large amount of leakages of carrier gas extravagant.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. Chromatograph with adjustable carrier gas flow rate, comprising a chromatograph body (1), a carrier gas tank (20) and a gasification chamber (30), characterized in that: the device is characterized in that a storage box (4) is fixedly arranged at the front end of a chromatograph main body (1), a sampling mechanism (61) is arranged at the inner position of the storage box (4), a prompt lamp (3) is fixedly arranged at the front end of the chromatograph main body (1), a control panel (6) is fixedly arranged at the right side of the front end of the chromatograph main body (1), a protection mechanism (59) is arranged at the front end of the control panel (6), a fixing mechanism (23) is arranged at the lower end of the chromatograph main body (1), a placement groove (17) is formed at the inner left side of the chromatograph main body (1), a sealing plate (18) is movably arranged at the left side end of the chromatograph main body (1), a gas carrying tank (20) is arranged at the inner position of the placement groove (17), a trigger mechanism (60) is arranged at the inner lower end of the placement groove (17), a connecting valve (21) is fixedly arranged at the upper end of the gas carrying tank (20), a hard pipe (24) is arranged at the right side of the connecting valve (21), a pressure gauge (2) is fixedly arranged at the right side of the hard pipe (24), a hard pipe (25) is arranged at the upper end of the pressure gauge (2), and a hollow pipe (22) is arranged at the center position of the center of the hard pipe (22), a first screw rod (35) is arranged in the screw hole (19) in an inserting mode, an operation block (36) is fixedly arranged at the upper end of the first screw rod (35), a movable shaft (37) is movably arranged at the lower end of the first screw rod (35) in an inserting mode, an adjusting plate (42) is fixedly arranged at the lower end of the movable shaft (37), a fixing plate (40) is fixedly arranged in the hollow block (22), a plurality of through holes (41) are formed in the front end of the fixing plate (40), the adjusting plate (42) is located at the front end of the fixing plate (40), a cavity (38) is formed in the upper end of the hollow block (22), a rubber ring (39) is fixedly arranged in the cavity (38), the adjusting plate (42) movably penetrates through the center of the rubber ring (39), a gasification chamber (30) is fixedly arranged in the inner position of the chromatograph main body (1), an injection hole (31) is formed in the upper end of the gasification chamber (30), a coiled pipe (32) is fixedly arranged at the lower end of the gasification chamber (30), a detector (33) is fixedly arranged at the right side, and a signal amplifier (34) is fixedly arranged in the right side of the detector (33); the trigger mechanism (60) comprises a box body (26), a groove body (27), an elastic membrane (28) and a trigger switch (29), the box body (26) is fixedly arranged at the lower end position in the placing groove (17), the trigger switch (29) is fixedly arranged at the lower end position in the box body (26), the trigger switch (29) is electrically connected with the prompting lamp (3), the groove body (27) is arranged at the upper end position of the box body (26), and the elastic membrane (28) is fixedly arranged at the inner position of the groove body (27); the sampling mechanism (61) comprises a sampling tube (43), a rectangular block (47), a pressing block (48), a movable rod (46), a vertical rod (49), a limiting ring (50), a spring (51), an extension block (52), a piston block (45), an injection tube (44), a rubber plug (53) and a positioning mechanism (62), the internal position of the storage box (4) is provided with the sampling tube (43), the lower end of the sampling tube (43) is fixedly provided with the injection tube (44), the left end of the sampling tube (43) is horizontally and fixedly provided with the extension block (52), the central position of the extension block (52) is movably inserted and provided with the vertical rod (49), the upper end of the vertical rod (49) is fixedly provided with the pressing block (48), the vertical end of the vertical rod (49) is vertically and fixedly provided with the rubber plug (53), the rubber plug (53) is arranged in the injection tube (44), the outer end of the vertical rod (49) is fixedly provided with the limiting ring (50) around the fixing installation, the spring (51) is movably arranged between the lower end of the limiting ring (50) and the upper end of the extension block (52), the vertical rod (43) is arranged around the movable rod (51), and the vertical rod (45) is arranged in the sampling tube, a movable rod (46) is vertically and fixedly arranged at the center of the upper end of the piston block (45), the upper end of the movable rod (46) extends to the outer side of the upper end of the sampling tube (43), a rectangular block (47) is fixedly arranged at the upper end of the movable rod (46), and a positioning mechanism (62) is arranged in the movable rod (46); positioning mechanism (62) include third screw rod (54), toper piece (55), locating piece (57), sealing rubber pad (58) and vertical groove (56), vertical groove (56) have been seted up to movable rod (46) internal position, movable rod (46) central point puts and alternates and is provided with third screw rod (54), third screw rod (54) upper end extends to rectangle piece (47) upper end position, and the lower extreme extends to vertical groove (56) internal position, vertical groove (56) both sides position horizontal activity alternates and is provided with locating piece (57), movable rod (46) and locating piece (57) contact position are fixed and are provided with sealing rubber pad (58), third screw rod (54) lower extreme position fixed mounting is provided with toper piece (55), the extrusion is in locating piece (57) inboard end position.
2. A chromatograph capable of adjusting a carrier gas flow rate according to claim 1, wherein: protection machanism (59) include rectangular channel (5), closing plate (7) and operation groove (8), rectangular channel (5) have been seted up to chromatograph main part (1) front position, the inside left side position activity joint of rectangular channel (5) is provided with closing plate (7), operation groove (8) have been seted up to closing plate (7) front position.
3. A chromatograph capable of adjusting a flow rate of a carrier gas according to claim 2, wherein: the fixing mechanism (23) comprises a wheel shaft (10), a moving wheel (11), a bottom plate (9), a second screw (12), a rubber block (13), a transmission wheel (14), a transmission belt (15) and a rotating block (16), the bottom plate (9) is horizontally and fixedly arranged at the lower end of the chromatograph main body (1), the wheel shaft (10) is movably and alternately arranged at the two side end positions of the bottom plate (9), the moving wheel (11) is fixedly arranged at the outer side position of the front end of the wheel shaft (10) in a surrounding mode, the second screw (12) is arranged at the two side end positions of the bottom plate (9) in a penetrating mode, the rotating block (16) is fixedly arranged at the upper end of the second screw (12) in a surrounding mode, anti-skidding threads are arranged at the outer side end position of the rotating block (16), the rubber block (13) is fixedly arranged at the lower end position of the second screw (12) in a surrounding mode, the transmission wheel (14) is fixedly arranged at the outer side end position of the second screw (12), and the transmission belt (15) is arranged in a surrounding mode.
4. A chromatograph with adjustable carrier gas flow rate according to claim 3, wherein: the pressure gauge (2) is fixedly arranged at the front end of the chromatograph main body (1).
5. The chromatograph of claim 4, wherein the carrier gas flow rate is adjustable by: the signal amplifier (34) is electrically connected with the control panel (6).
6. The use method of the chromatograph capable of adjusting the flow rate of the carrier gas according to claim 5, wherein: the method specifically comprises the following steps:
the first step is as follows: after the chromatograph main body (1) moves to a target position, a user rotates the second screw rod (12) through the rotating block (16), so that the second screw rod (12) moves downwards, and simultaneously, the transmission wheel (14) and the transmission belt (15) are linked to synchronously rotate the adjacent second screw rod (12) until the rubber block (13) extrudes the ground position, so that the chromatograph main body (1) is fixed and is convenient to use, the sealing plate (7) is slid leftwards through the operation groove (8), so that the position of the control panel (6) is exposed, the use is convenient, when the chromatograph main body is idle, the sealing plate (7) can be shielded at the front end position of the control panel (6) by sliding the sealing plate (7) rightwards through the operation groove (8), so that the control panel (6) is protected conveniently;
the second step is that: when the gas-carrying tank (20) is used, when the internal air pressure is insufficient, a user rotates the first screw (35) through the operation block (36), the first screw (35) is driven to move downwards to extrude the movable shaft (37) to move downwards, so that the adjusting plate (42) moves downwards until the adjusting plate (42) covers the front end of the perforation (41), the perforation (41) is reduced, the air flow speed is accelerated, the impact force of carrier gas is improved, the situation that the air pressure is insufficient and cannot reach the expected effect is prevented, the accuracy of a detection result is improved, the carrier gas can be used as far as possible, and the waste of the carrier gas is reduced;
the third step: extending an injection tube (44) at the lower end of a sampling tube (43) to the inside of a sample liquid, then moving a movable rod (46) upwards by a user to move a piston block (45) upwards until a sampling volume position, then rotating a third screw (54) to move the third screw (54) downwards to drive a conical block (55) to move downwards, extruding a positioning block (57) to move outwards to extrude the inner side wall position of the sampling tube (43) to fix the position of the movable rod (46), simultaneously forming vacuum inside the sampling tube (43), then pressing a vertical rod (49) downwards by a pressing block (48), enabling a limiting ring (50) to extrude a spring (51) to be in a compressed state, driving a rubber plug (53) to be separated from the inside of the injection tube (44), sucking a solution into the inside of the sampling tube (43) under the action of negative pressure to finish sampling work, and blocking the injection tube (44) by the rubber plug (53) to effectively prevent residual air inside the sampling tube (43) from occupying the sampling volume to cause inaccurate detection results, rotating the straight rod (49) after sampling is finished, rotating the rubber plug (53) to the left position, and then injecting the gasified solution into a working chamber through the injection hole (31);
the fourth step: when connecting valve (21) leak, the inside atmospheric pressure of resettlement groove (17) increases for elastic membrane (28) are to box body (26) inside inflation, thereby extrusion trigger switch (29), make warning light (3) lighted, thereby suggestion user resettlement groove (17) inside year gas pitcher takes place to leak, and the person of facilitating the use in time handles, thereby avoids a large amount of leakages of carrier gas extravagant.
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| CN114047276B (en) * | 2022-01-17 | 2022-04-15 | 华谱科仪(北京)科技有限公司 | Chromatograph control method and device |
| CN114493922B (en) * | 2022-01-24 | 2024-06-21 | 成都秦川物联网科技股份有限公司 | Centralized operation formula natural gas energy metering device and thing networking system |
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