CN114994222A - Portable detection device based on gas chromatography-mass spectrometry analysis principle - Google Patents
Portable detection device based on gas chromatography-mass spectrometry analysis principle Download PDFInfo
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- CN114994222A CN114994222A CN202210607502.5A CN202210607502A CN114994222A CN 114994222 A CN114994222 A CN 114994222A CN 202210607502 A CN202210607502 A CN 202210607502A CN 114994222 A CN114994222 A CN 114994222A
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- frame
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- sliding
- fixedly connected
- wheel
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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
- G01N30/18—Injection using a septum or microsyringe
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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
- G01N30/62—Detectors specially adapted therefor
- G01N30/72—Mass spectrometers
- G01N30/7206—Mass spectrometers interfaced to gas chromatograph
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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
- G01N30/18—Injection using a septum or microsyringe
- G01N2030/185—Injection using a septum or microsyringe specially adapted to seal the inlet
Abstract
The invention discloses a portable detection device based on a gas chromatography-mass spectrometry analysis principle in the technical field of gas chromatography, which comprises a main body frame, wherein a guide cylinder is fixedly connected to the side wall of the main body frame, a fixed plate is arranged at the bottom of the main body frame, when an injector is vertically fixed, the injector starts to operate through a driving motor, and then a sliding block is driven by a swinging rod to move rightwards, the rightward movement of the sliding block drives a back pressing block to move rightwards through a transverse back pressing spring, at the moment, the back pressing block drives a connecting frame to move rightwards, and further, the pressure block is driven to move rightwards to clamp a needle head of the injector with a pressure block at a symmetrical end, at the moment, the pressure block moves downwards along with the needle head, when the pressure block is attached to the top surface of a rubber plug, the needle head is inserted into the rubber plug, the pressure block and the needle head are kept in a sliding state in the process of inserting the rubber plug, so that the local strength of the needle head at the position is increased, the function of preventing the needle from deforming caused by the local overlarge stress of the needle in the inserting process.
Description
Technical Field
The invention relates to the technical field of gas chromatography, in particular to a portable detection device based on a gas chromatography-mass spectrometry analysis principle.
Background
At present, in the detection and analysis development of elements existing in mixed gas, the use of a gas chromatography-mass spectrometry technology has important significance, and the boiling points of the gases in the mixed gas are different, so that the mixed gas is driven by carrier gas flow to move in a chromatographic column, the time for the elements of the gases to reach a detector is different, different wave crests are displayed on an imager, and the function of automatically detecting the gas components is achieved.
And use gas chromatograph to examine time measuring at present, when examining time measuring in the mist, need use the syringe to inhale the mist, the gas after inhaling detects in injecting to the chromatograph through the plug, and the in-process of injecting is carried out in the manual work, because the inside heat of chromatograph makes the plug inflation, lead to the uneven phenomenon of bending that appears in atress when inserting of syringe needle, the manual work is also uneven to the insertion dynamics direction of syringe simultaneously, lead to the syringe needle to easily appear crooked damage phenomenon, influence gaseous injection detection, the automatic injector on the existing market only is used for carrying out the automatic sampling injection to liquid and solid matter.
Based on the above, the invention designs a portable detection device based on the gas chromatography-mass spectrometry analysis principle to solve the above problems.
Disclosure of Invention
The invention aims to provide a portable detection device based on a gas chromatography-mass spectrometry analysis principle, which starts to operate by a driving motor, further drives a sliding block to move rightwards by a swinging rod, the rightwards movement of the sliding block drives a return pressing block to move rightwards by a transverse return pressure spring, the return pressing block drives a connecting frame to move rightwards at the moment, further drives a pressure block to move rightwards and clamp a syringe needle by a pressure block at a symmetrical end, the pressure block moves downwards along with the needle at the moment, when the pressure block is attached to the top surface of a rubber plug, the needle is pricked into the rubber plug at the moment, and the pressure block and the needle keep a sliding state in the process of pricking the needle into the rubber plug, so that the local strength of the needle at the rubber plug is increased, and the function of preventing the needle from being deformed due to overlarge local stress in the process of inserting the needle is prevented.
In order to achieve the purpose, the invention provides the following technical scheme: a portable detection device based on a gas chromatography-mass spectrometry analysis principle comprises a main body frame, wherein a guide cylinder is fixedly connected to the side wall of the main body frame, a fixing plate is arranged at the bottom of the main body frame, a pressure cylinder frame is connected to the circumferential inner wall of the guide cylinder in a sliding manner, three clamping mechanisms are arranged on the circumferential array of the pressure cylinder frame, the bottoms of the clamping mechanisms are meshed with inclined groove teeth on an inclined meshing groove, the meshing groove is obliquely arranged inside the cylindrical frame, a swinging rod is rotatably connected to the bottom of the cylindrical frame, a conical cylindrical wheel is meshed with the circumferential direction of the cylindrical frame through threads, the conical cylindrical wheel is rotatably connected with the main body frame, a bevel gear is meshed with the circumferential direction of the conical cylindrical wheel, a driving motor is arranged on the main body frame, a bevel gear is arranged at the output end of the driving motor, a sliding rod is connected to the inside of the cylindrical frame in a sliding manner, the sliding rod is arranged at the top of the fixing plate, the center fixedly connected with plug of fixed plate, the swinging arms is kept away from cylinder frame one end and is rotated and be connected with the sliding block, the surface of sliding block with set up the chute board sliding connection on the slide bar lateral wall, the lateral wall fixedly connected with of sliding block transversely returns the pressure spring, the one end fixedly connected with who keeps away from the sliding block of transversely returning the pressure spring returns the briquetting, it passes through the circumference stand pipe and the sliding block sliding connection of sliding block to return the briquetting, the one end fixedly connected with link of transversely returning the pressure spring is kept away from to the back briquetting, the first reset spring of inner wall fixedly connected with of link, the one end fixedly connected with that the link was kept away from to first reset spring erects the piece with link sliding connection's removal, the bottom of removing the erects piece is provided with the pressure piece.
As a further scheme of the invention, the clamping mechanism comprises a rotating wheel, the rotating wheel is rotationally connected with the inner wall of the pressure cylinder frame, the circumferential top of the rotating wheel is fixedly connected with a long sliding rod provided with a through long groove, the long sliding rod is rotationally connected with the circumferential direction of a sliding column through the through long groove, the sliding column is slidably connected with the inner wall of a guide frame through a group of sliding chutes arranged on the inner wall of the guide frame, the circumferential direction of the sliding column is provided with a concave connecting block, one side of the through groove of the long sliding rod penetrates between the sliding column and the connecting block, the inside of the connecting block is fixedly connected with a counter pressure spring, one end of the counter pressure spring far away from the connecting block is fixedly connected with an extrusion block, the extrusion block is slidably connected with the inside of the connecting block, the circumferential bottom of the rotating wheel is fixedly connected with a fixed L frame, one end of the fixed L frame far away from the rotating wheel is slidably connected with a group of tooth wheels through a hollow cylinder, and the tooth wheels are meshed with meshing wheels through teeth, and the circumferential direction of the meshing wheel is meshed with the inclined groove teeth on the meshing groove through the meshing teeth.
As a further scheme of the invention, a reset motor is fixedly connected to the fixed L-shaped frame, a rotating gear is fixedly connected to the output end of the reset motor, a group of meshing racks is meshed in the circumferential direction of the rotating gear, one end, far away from the rotating gear, of each meshing rack is in contact with a circumferential groove formed in the circumferential direction of each gear wheel, a contraction spring is arranged between the gear wheels, and one end, far away from the contraction spring, of each gear wheel is T-shaped and is in sliding connection with a T-shaped groove formed in the inside of each meshing wheel.
As a further scheme of the invention, the bottom end of the pressure cylindrical frame is provided with a plurality of reset springs, one end of each reset spring, which is far away from the pressure cylindrical frame, is fixedly connected with the cylindrical frame, the slotting width of the cylindrical frame is larger than the maximum length of the distance between one group of meshing racks and the end, which is far away from the rotating gear, of each meshing rack, and the radius of the cylindrical frame is smaller than that of the guide cylinder.
As a further scheme of the invention, the length of the head part of the T-shaped groove in the meshing wheel is larger than the length of the ratchet teeth of the tooth cone.
As a further scheme of the invention, a rubber block is arranged on one side of the pressure block, which is far away from the connecting frame, and a rubber block is arranged on one side of the extrusion block, which is far away from the counter pressure spring.
As a further scheme of the invention, the radius of the through hole formed at the bottom of the pressure cylindrical frame is larger than the radius of the needle head and smaller than the radius of the needle tube, and the radius of the guide column in the pressure cylindrical frame is larger than the radius of the needle tube.
As a further scheme of the invention, the distance from the extrusion block to the wall of the needle tube is less than the length of the engagement groove, and the distance from the cylindrical frame to the end connected with the chute plate is greater than the distance from the tip of the needle to the rubber plug.
Compared with the prior art, the invention has the beneficial effects that:
1. in the invention, after the vertical fixation of the syringe is finished, the driving motor starts to operate so as to drive the pressure block to move rightwards and the pressure block at the symmetrical end to clamp the syringe needle, at the moment, the pressure block moves downwards along with the needle, when the pressure block is attached to the top surface of the rubber plug, the needle is pricked into the rubber plug, in the process of puncturing the rubber plug by the needle head, the pressure block and the needle head are kept in a sliding state, so that the local strength of the needle head at the rubber plug is increased, the device is convenient to disassemble and carry, meanwhile, due to the flexibility of fixing the extrusion block and the pressure block, the device is suitable for syringes with barrels with different radiuses and needles with different radiuses, thereby greatly increased the commonality that the syringe used, increased the stability of injection simultaneously, ensured that the syringe is in vertical direction atress all the time, avoided the artifical condition that the atress is uneven when carrying out the injection and lead to the syringe needle to warp.
2. According to the invention, the pressure cylinder frame is extruded to move downwards through the outer pipe wall of the injector, so that the rotating wheels of three circumferential arrays are driven to move downwards, the downward movement of the rotating wheels drives the fixed L-shaped frame to move downwards, the downward movement of the fixed L-shaped frame drives the meshing wheel to move obliquely downwards along the meshing groove, the oblique downward movement of the meshing wheel reversely drives the rotating wheel to rotate clockwise through the fixed L-shaped frame, so that the long sliding rod is driven to rotate clockwise, the clockwise rotation of the long sliding rod drives the sliding column to slide rightwards in the transverse groove formed in the guide frame through the penetrating groove formed in the long sliding rod, the sliding column drives the connecting block to move rightwards, and then the anti-compression spring drives the extrusion block to extrude the pipe wall of the injector to quickly fix the injector in the vertical direction.
3. The reset motor starts to operate to drive the rotating gear to rotate anticlockwise, the rotating gear drives the meshed racks to move towards the axis of the rotating gear in opposite directions, the meshed racks move to drive the toothed gear wheels to move towards the symmetrical center through the circumferential groove to compress the contraction spring, the movement of the toothed gear wheels enables the ratchet structure between the toothed gear wheels and the back pressure spring to be disengaged, the reset spring resets at the moment, the reset process is slowed down due to the meshing effect of the meshed gear wheels and the meshed groove, and the phenomenon that the injector is popped up due to large impact when resetting is avoided, so that the injector is stably reset, and the needle deformation is prevented.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic cross-sectional view of FIG. 1 according to the present invention;
FIG. 3 is an enlarged view of the structure at A of FIG. 2 according to the present invention;
FIG. 4 is an enlarged view of the structure at B of FIG. 2 according to the present invention;
FIG. 5 is an enlarged view of the structure of FIG. 2 at C according to the present invention;
FIG. 6 is a schematic view of a fixing plate according to the present invention;
FIG. 7 is an enlarged view of FIG. 6 at D according to the present invention;
FIG. 8 is a schematic view of a pressure cylinder frame according to the present invention;
FIG. 9 is an enlarged view of the structure at E of FIG. 8 according to the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a main body frame; 2. a guide cylinder; 3. a fixing plate; 4. a rubber plug; 5. a pressure cylinder frame; 6. a rotating wheel; 7. fixing an L-shaped frame; 8. a conical cylindrical wheel; 9. a second reset spring; 10. an engaging wheel; 11. an engagement groove; 12. engaging teeth; 13. skewed slot teeth; 14. a long slide bar; 15. a sliding post; 16. a guide frame; 17. connecting blocks; 18. extruding the block; 19. a counter pressure spring; 20. a cylindrical frame; 21. a slide bar; 22. a swing lever; 23. a slider; 24. a chute plate; 25. a transverse return pressure spring; 26. pressing the block back; 27. a connecting frame; 28. a first return spring; 29. moving the vertical block; 30. a pressure block; 31. a tooth cone; 32. contracting the spring; 33. resetting the motor; 34. a rotating gear; 35. meshing the racks; 36. a circumferential groove; 37. a drive motor; 38. a bevel gear.
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. 1-9, the present invention provides a technical solution: a portable detection device based on a gas chromatography-mass spectrometry principle comprises a main body frame 1, a guide cylinder 2 is fixedly connected to the side wall of the main body frame 1, a fixing plate 3 is arranged at the bottom of the main body frame 1, a pressure cylinder frame 5 is connected to the inner wall of the circumference of the guide cylinder 2 in a sliding manner, three clamping mechanisms are arranged on the circumferential circumference array of the pressure cylinder frame 5, the bottoms of the clamping mechanisms are meshed with inclined groove teeth 13 on an inclined meshing groove 11, the meshing groove 11 is obliquely arranged inside a cylinder frame 20, a swinging rod 22 is rotatably connected to the bottom of the cylinder frame 20, a conical cylinder wheel 8 is meshed with the circumferential direction of the cylinder frame 20 through threads, the conical cylinder wheel 8 is rotatably connected with the main body frame 1, a bevel gear 38 is meshed with the circumferential direction of the conical cylinder wheel 8, a driving motor 37 is arranged on the main body frame 1, and a bevel gear 38 is arranged at the output end of the driving motor 37, a sliding rod 21 is slidably connected inside the cylindrical frame 20, the sliding rod 21 is arranged at the top of the fixing plate 3, a rubber plug 4 is fixedly connected at the center of the fixing plate 3, one end of a swinging rod 22, which is far away from the cylindrical frame 20, is rotatably connected with a sliding block 23, the surface of the sliding block 23 is slidably connected with a sliding groove plate 24 arranged on the side wall of the sliding rod 21, the side wall of the sliding block 23 is fixedly connected with a transverse return pressure spring 25, one end, which is far away from the sliding block 23, of the transverse return pressure spring 25 is fixedly connected with a return pressure block 26, the return pressure block 26 is slidably connected with the sliding block 23 through a circumferential guide pipe of the sliding block 23, one end, which is far away from the transverse return pressure spring 25, of the return pressure block 26 is fixedly connected with a connecting frame 27, a first return spring 28 is fixedly connected with the inner wall of the connecting frame 27, one end, which is far away from the connecting frame 27, of the first return spring 28 is fixedly connected with a moving vertical block 29, and a pressure block 30 is arranged at the bottom of the moving vertical block 29;
when the vertical fixing of the syringe is completed, the driving motor 37 starts to operate, and the output end drives the bevel gear 38 to rotate, the rotation of the bevel gear 38 drives the conical cylindrical wheel 8 to rotate through the meshing action, the rotation of the conical cylindrical wheel 8 drives the cylindrical frame 20 to move vertically downward through the internal threads (as shown in fig. 2, the rotation speed is reduced by the meshing of the bevel gear 38 and the conical cylindrical wheel 8 when viewed from the front view direction of fig. 2, so that the vertical transmission speed generated by the meshing of the conical cylindrical wheel 8 and the internal threads of the cylindrical frame 20 is reduced, the stability of inserting the needle into the interior is increased, the cylindrical frame 20 can only move vertically through the limiting action of the sliding rod 21 without rotating), the vertical downward movement of the cylindrical frame 20 drives the syringe to move vertically downward to approach the rubber plug 4, and at this time, the vertical downward movement of the cylindrical frame 20 drives the sliding block 23 to move rightward through the swinging rod 22 (as shown in fig. 5, seen from the front view direction of fig. 5), the rightward movement of the sliding block 23 drives the back-pressing block 26 to move rightward through the transverse back-pressing spring 25 (when the needle is clamped, since the cylindrical frame 20 still continues to move downward, the back-pressing block 26 compresses the transverse back-pressing spring 25 leftward under the reaction force of the needle, so as to prevent the needle from being extruded and deformed), at this time, the back-pressing block 26 drives the connecting frame 27 to move rightward (the first back-pressing spring 28 is located between the connecting frame 27 and the moving vertical block 29, and is used for performing the later-stage resetting action on the pressure block 30), so as to drive the pressure block 30 to move rightward and clamp the needle of the injector with the pressure block 30 at the symmetrical end, at this time, the pressure block 30 moves downward along with the needle, when the pressure block 30 is attached to the top surface of the rubber plug 4, at this time, the needle is inserted into the rubber plug 4, the pressure block 30 and the needle keep sliding state, thereby increase the local intensity of syringe needle in plug department (above-mentioned device sets up directly over the chromatograph plug, convenient to dismantle and carry, simultaneously because the flexibility that extrusion block 18 and pressure block 30 are fixed, make the device be applicable to the syringe of different radius bobbin and different radius syringe needles, thereby greatly increased the commonality that the syringe used, the stability of injection has been increased simultaneously, ensure that the syringe is in vertical direction atress all the time, the condition that the atress inequality leads to the syringe needle to warp when having avoided artifical to inject, prevent the syringe needle should the too big function that leads to the syringe needle to warp of local atress in the inserting process.
As a further scheme of the invention, the clamping mechanism comprises a rotating wheel 6, the rotating wheel 6 is rotatably connected with the inner wall of the pressure cylinder frame 5, the circumferential top of the rotating wheel 6 is fixedly connected with a long slide rod 14 provided with a through long groove, the long slide rod 14 is rotatably connected with the circumferential direction of a slide column 15 through the through long groove, the slide column 15 is slidably connected with the inner wall of a guide frame 16 through a sliding groove arranged on the inner wall of a group of guide frames 16, the circumferential direction of the slide column 15 is provided with a connecting block 17 which is arranged in a concave shape, one side of the through groove of the long slide rod 14 passes through the position between the slide column 15 and the connecting block 17, the inside of the connecting block 17 is fixedly connected with a counter pressure spring 19, one end of the counter pressure spring 19 far away from the connecting block 17 is fixedly connected with a squeezing block 18, the squeezing block 18 is slidably connected with the inside of the connecting block 17, the circumferential bottom of the rotating wheel 6 is fixedly connected with a fixed L frame 7, one end of the fixed L frame 7 far away from the rotating wheel 6 is slidably connected with a group of gear teeth 31 through a hollow cylinder, the tooth cone 31 is engaged with the meshing wheel 10 through the ratchet teeth, and the circumference of the meshing wheel 10 is engaged with the inclined groove teeth 13 on the meshing groove 11 through the meshing teeth 12;
after the mixed gas is sucked by the manual injector, the outer wall of the injector is pressed onto the inner wall of the pressure cylinder frame 5 (as shown in fig. 2, the inside of the pressure cylinder frame 5 is in a cylindrical opening shape when viewed from the front view direction of fig. 2, the opened port is used for the needle of the injector to pass through, meanwhile, the cylindrical arrangement has a guiding function for the outer wall of the injector to prevent the injector from inclining, the guiding cylinder 2 plays a role of guiding the pressure cylinder frame 5 in the vertical direction, the bottom of the pressure cylinder frame 5 is fixedly connected with the cylinder frame 20 for later-stage resetting use), the pressure cylinder frame 5 is pressed by the outer wall of the injector to move downwards, so that the rotating wheels 6 of the three circumferential arrays are driven to move downwards, the downwards movement of the rotating wheels 6 drives the fixed L frame 7 to move downwards (as shown in fig. 3 and viewed from the front view direction of fig. 3), the fixed L-shaped frame 7 moves downwards to drive the meshing wheel 10 to move downwards along the meshing groove 11 in an inclined mode (as shown in figure 4 and seen from the front view direction of figure 4), the meshing wheel 10 moves downwards in an inclined mode and reversely drives the rotating wheel 6 to rotate clockwise through the fixed L-shaped frame 7, so as to drive the long sliding rod 14 to rotate clockwise, the long sliding rod 14 rotates clockwise through the through groove formed in the long sliding rod to drive the sliding column 15 to slide rightwards in the transverse groove formed in the guide frame 16 (as shown in figure 3 and seen from the front view direction of figure 3, the straight long groove formed in the long sliding rod 14 avoids driving the sliding column 15 to move in a twisting direction in the sliding groove formed in the guide frame 16, meanwhile, in the moving process, the distance from the sliding column 15 to the center of the rotating wheel 6 is continuously shortened, so that the rightward movement of the sliding column 15 is accelerated, the clamping of the wall of the syringe is accelerated, the sliding column 15 is arranged to be cylindrical, so that the contact area is reduced, and the friction force is reduced, and the sliding column 15 is restricted from rotating by the sliding slot of the guide frame 16), the sliding column 15 drives the connecting block 17 to move rightwards, and then the extrusion block 18 is driven by the counter-pressure spring 19 to extrude the pipe wall of the injector to fix the injector in the vertical direction (when the pressing force on the pipe wall is large enough, the extrusion block 18 compresses the counter-pressure spring 19 under the action of the reaction force of the pipe wall, thereby achieving the effect of buffering pressure and avoiding the surface of the injector from being crushed by the overlarge pressure), since the engaging teeth 12 formed on the side wall of the engaging wheel 10 are engaged with the inclined groove teeth 13 formed on the side edge of the engaging groove 11, the engaging wheel 10 is driven to rotate, since the meshing wheel 10 is meshed with the tooth cone 31 through the ratchets, the meshing wheel 10 can only rotate clockwise, and therefore the phenomenon of reversion is avoided.
As a further scheme of the invention, a reset motor 33 is fixedly connected to the fixed L-shaped frame 7, a rotating gear 34 is fixedly connected to the output end of the reset motor 33, a group of meshing racks 35 are meshed with the circumferential direction of the rotating gear 34, one end, far away from the rotating gear 34, of each meshing rack 35 is in contact with a circumferential groove 36 formed in the circumferential direction of each gear wheel 31, a retraction spring 32 is arranged between the gear wheels 31, and one end, far away from the retraction spring 32, of each gear wheel 31 is T-shaped and is in sliding connection with a T-shaped groove formed in the inside of the meshing wheel 10.
As a further scheme of the invention, a plurality of second return springs 9 are arranged at the bottom end of the pressure cylindrical frame 5, one ends of the second return springs 9 far away from the pressure cylindrical frame 5 are fixedly connected with a cylindrical frame 20, the width of a slot of the cylindrical frame 20 is larger than the maximum length of a distance between a group of meshing racks 35 and a rotating gear 34, and the radius of the cylindrical frame 20 is smaller than that of the guide cylinder 2.
As a further aspect of the present invention, the length of the T-shaped groove head inside the engaging wheel 10 is greater than the length of the ratchet teeth of the tooth cone 31.
As a further scheme of the invention, a rubber block is arranged on one side of the pressure block 30, which is far away from the connecting frame 27, so as to avoid the phenomenon that the needle head is extruded and deformed, and a rubber block is arranged on one side of the extrusion block 18, which is far away from the counter compression spring 19, so as to prevent the phenomenon that the tube wall of the injector is extruded and damaged.
As a further scheme of the invention, the radius of a through hole formed at the bottom of the pressure cylindrical frame 5 is larger than the radius of a needle head and smaller than the radius of a needle tube, and the radius of a guide column in the pressure cylindrical frame 5 is larger than the radius of the needle tube.
As a further aspect of the invention, the distance from the extrusion block 18 to the wall of the needle tube is less than the length of the engagement groove 11, and the distance from the cylindrical frame 20 to the end connected with the chute plate 24 is greater than the distance from the tip of the needle to the rubber plug 4.
After the rubber plug 4 is pricked, the gas injection operation is manually completed, after the gas injection is completed, the driving motor 37 drives the bevel gear 38 to rotate reversely to drive the injector to rotate reversely, when the injector rotates reversely to the initial position, the injector is extruded and fixed by the extrusion block 18, at this time, the reset motor 33 starts to operate to drive the rotating gear 34 to rotate anticlockwise (as shown in fig. 7, when looking from the top to the bottom of fig. 7, teeth are arranged on the rotating gear 34 in the circumferential direction), the rotating gear 34 rotates to drive the set of meshing racks 35 to move towards the axis of the rotating gear 34 in opposite directions, at this time, the movement of the meshing racks 35 drives the set of gear wheels 31 to move towards the symmetrical center through the circumferential groove 36 to compress the retraction spring 32 (as shown in fig. 9, when looking from the front of fig. 9 in the opposite direction, the meshing racks 35 are in contact with the circumferential groove formed on the gear wheels 31 in the circumferential direction, simultaneously, the meshing rack 35 can limit the gear wheel 31, one end of the gear wheel 31, which is far away from the retraction spring 32, is provided with a T-shaped head in sliding connection with the inside of the meshing wheel 10, at the moment, the movement of the gear wheel 31 enables the ratchet structure between the gear wheel 31 and the back pressure spring 19 to be disengaged, at the moment, the second reset spring 9 resets under the action (as shown in figure 2, seen from the front view direction of figure 2), and due to the meshing action of the meshing wheel 10 and the meshing groove 11, the resetting process is slowed down, large impact pop-up when the syringe resets is avoided, so that the syringe resets stably, and the needle deformation prevention function is realized.
Claims (8)
1. A portable detection device based on gas chromatography-mass spectrometry analysis principle, includes main part frame (1), its characterized in that: the side wall of the main body frame (1) is fixedly connected with a guide cylinder (2), the bottom of the main body frame (1) is provided with a fixing plate (3), the inner wall of the circumference of the guide cylinder (2) is connected with a pressure cylinder frame (5) in a sliding manner, the circumference of the pressure cylinder frame (5) is arrayed with three clamping mechanisms, the bottoms of the clamping mechanisms are meshed with inclined groove teeth (13) on an inclined meshing groove (11), the meshing groove (11) is obliquely arranged in the cylindrical frame (20), the bottom of the cylindrical frame (20) is rotatably connected with a swinging rod (22), the circumference of the cylindrical frame (20) is meshed with a conical cylindrical wheel (8) through threads, the conical cylindrical wheel (8) is rotatably connected with the main body frame (1), the circumference of the conical cylindrical wheel (8) is meshed with a bevel gear (38), a driving motor (37) is arranged on the main body frame (1), and the output end of the driving motor (37) is provided with a bevel gear (38), the inner part of the cylindrical frame (20) is connected with a sliding rod (21) in a sliding manner, the sliding rod (21) is arranged at the top of the fixing plate (3), the center of the fixing plate (3) is fixedly connected with a rubber plug (4), one end of the swinging rod (22) far away from the cylindrical frame (20) is connected with a sliding block (23) in a rotating manner, the surface of the sliding block (23) is connected with a sliding chute plate (24) arranged on the side wall of the sliding rod (21) in a sliding manner, the side wall of the sliding block (23) is fixedly connected with a transverse return pressure spring (25), one end of the transverse return pressure spring (25) far away from the sliding block (23) is fixedly connected with a return block (26), the return block (26) is connected with the sliding block (23) in a sliding manner through a circumferential guide pipe of the sliding block (23), one end of the return block (26) far away from the transverse return pressure spring (25) is fixedly connected with a connecting frame (27), and the inner wall of the connecting frame (27) is fixedly connected with a first return spring (28), one end of the first return spring (28) far away from the connecting frame (27) is fixedly connected with a movable vertical block (29) which is connected with the connecting frame (27) in a sliding mode, and the bottom of the movable vertical block (29) is provided with a pressure block (30).
2. The portable detection device based on the gas chromatography-mass spectrometry analysis principle of claim 1, wherein: the clamping mechanism comprises a rotating wheel (6), the rotating wheel (6) is rotatably connected with the inner wall of a pressure cylinder frame (5), the circumferential top of the rotating wheel (6) is fixedly connected with a long slide rod (14) provided with a through long groove, the long slide rod (14) is rotatably connected with the circumferential direction of a slide column (15) through the through long groove, the slide column (15) is slidably connected with the inner wall of a guide frame (16) through a slide groove formed in the inner wall of a group of guide frames (16), a concave connecting block (17) is arranged in the circumferential direction of the slide column (15), one side of the through groove of the long slide rod (14) penetrates between the slide column (15) and the connecting block (17), a counter pressure spring (19) is fixedly connected inside the connecting block (17), one end, far away from the connecting block (17), of the counter pressure spring (19) is fixedly connected with an extrusion block (18), and the extrusion block (18) is slidably connected with the inside of the connecting block (17), the fixed L frame (7) is fixedly connected to the bottom of the circumferential direction of the rotating wheel (6), one end, far away from the rotating wheel (6), of the fixed L frame (7) is connected with a group of tooth wheels (31) through a hollow cylinder in a sliding mode, the tooth wheels (31) are meshed with the meshing wheel (10) through the ratchet teeth, and the circumferential direction of the meshing wheel (10) is meshed with the inclined groove teeth (13) on the meshing groove (11) through the meshing teeth (12).
3. The portable detection device based on the gas chromatography-mass spectrometry analysis principle of claim 2, wherein: fixedly connected with reset motor (33) on fixed L frame (7), the output fixedly connected with rotating gear (34) of reset motor (33), the circumference meshing of rotating gear (34) has a set of meshing rack (35), the one end that meshing rack (35) kept away from rotating gear (34) contacts with circumferential groove (36) that tooth wheel (31) circumference was seted up, be provided with between tooth wheel (31) and contract spring (32), the one end that tooth wheel (31) kept away from contract spring (32) sets up to the T font, and with the T-slot sliding connection that the inside of meshing wheel (10) was seted up.
4. A portable testing device based on gas chromatography-mass spectrometry principle according to claim 3, characterized in that: the bottom of pressure cylinder frame (5) is provided with a plurality of first reset springs (9), and the one end fixedly connected with cylinder frame (20) of pressure cylinder frame (5) is kept away from in first reset spring (9), and the fluting width of cylinder frame (20) is greater than the maximum length that a set of meshing rack (35) kept away from rotating gear (34) end distance, and the radius of cylinder frame (20) is less than the radius of direction cylinder (2).
5. A portable testing device based on gas chromatography-mass spectrometry principle according to claim 3, characterized in that: the length of the T-shaped groove head part in the meshing wheel (10) is larger than the length of the ratchet of the tooth cone (31).
6. The portable detection device based on the gas chromatography-mass spectrometry analysis principle of claim 2, wherein: one side of the pressure block (30) far away from the connecting frame (27) is provided with a rubber block, and one side of the extrusion block (18) far away from the counter-pressure spring (19) is provided with a rubber block.
7. The portable detection device based on the gas chromatography-mass spectrometry analysis principle of claim 4, wherein: the radius of a through hole formed in the bottom of the pressure cylindrical frame (5) is larger than the radius of the needle head and smaller than the radius of the needle tube, and the radius of a guide column in the pressure cylindrical frame (5) is larger than the radius of the needle tube.
8. The portable detection device based on the gas chromatography-mass spectrometry analysis principle of claim 6, wherein: the distance from the extrusion block (18) to the wall of the needle tube is less than the length of the engagement groove (11), and the distance from the cylindrical frame (20) to the end connected with the sliding groove plate (24) is greater than the distance from the tip of the needle to the rubber plug (4).
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4621534A (en) * | 1983-09-14 | 1986-11-11 | Carlo Erba Strumentazione S.P.A. | Automatic sample apparatus, valve and sampling method |
| CN108747886A (en) * | 2018-05-23 | 2018-11-06 | 张汀仁 | A kind of medical treatment detection device for injector for medical purpose |
| CN209055511U (en) * | 2018-10-25 | 2019-07-02 | 杭州职业技术学院 | A kind of gas chromatograph convenient for sample introduction |
| CN212904710U (en) * | 2020-07-13 | 2021-04-06 | 河南华检检测技术服务有限公司 | Sample introduction structure of gas chromatograph |
| CN113173321A (en) * | 2021-04-09 | 2021-07-27 | 贵州嘉睿科技服务有限公司 | Sample injector clamp for sample inlet of gas chromatograph |
| CN113419012A (en) * | 2021-08-02 | 2021-09-21 | 崔然 | Gas chromatograph for detecting organic pollutants |
-
2022
- 2022-05-31 CN CN202210607502.5A patent/CN114994222B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4621534A (en) * | 1983-09-14 | 1986-11-11 | Carlo Erba Strumentazione S.P.A. | Automatic sample apparatus, valve and sampling method |
| CN108747886A (en) * | 2018-05-23 | 2018-11-06 | 张汀仁 | A kind of medical treatment detection device for injector for medical purpose |
| CN209055511U (en) * | 2018-10-25 | 2019-07-02 | 杭州职业技术学院 | A kind of gas chromatograph convenient for sample introduction |
| CN212904710U (en) * | 2020-07-13 | 2021-04-06 | 河南华检检测技术服务有限公司 | Sample introduction structure of gas chromatograph |
| CN113173321A (en) * | 2021-04-09 | 2021-07-27 | 贵州嘉睿科技服务有限公司 | Sample injector clamp for sample inlet of gas chromatograph |
| CN113419012A (en) * | 2021-08-02 | 2021-09-21 | 崔然 | Gas chromatograph for detecting organic pollutants |
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| CN114994222B (en) | 2023-03-24 |
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