CN208060459U - A kind of singlehanded mechanical sample introduction mechanism of chromatograph - Google Patents

Abstract

The utility model is related to a kind of singlehanded mechanical sample introduction mechanisms of chromatograph, including sample introduction cylinder, sample introduction piston, push rod, needle tubing, sample cavity is equipped in sample introduction cylinder, mounting plate is equipped at the top of sample introduction cylinder, mounting plate side has been pivotally connected shaft, shaft is equipped with pawl disk, it is cased with ratchet outside pawl disk, ratchet periphery is equipped with driving gear, mounting plate is equipped with transmission gear, push rod is equipped with rack, shaft is cased with reduction torsion spring, reduction torsion spring one end connects pawl disk, the reduction torsion spring other end is connect with mounting plate, pawl disk is equipped with handle, pawl disk is equipped with pawl body, handle is in contraction state, pawl body pushes pawl disk rotation.The grip of hand is converted to the centripetal force of sample introduction piston using the handle of rotation by the utility model, convenient for singlehanded sample introduction, pawl body, ratchet, transmission gear and rack, convenient for the oscillatory forces of handle to be converted into the thrust of push rod, it is simple in structure, it transmits precisely, sample size is easily controllable.

Description

A kind of singlehanded mechanical sample introduction mechanism of chromatograph

Technical field

The utility model is related to more particularly to a kind of singlehanded mechanical sample introduction mechanisms of chromatograph.

Background technology

Gas chromatograph is very wide in oil, chemical industry, biochemistry, medical and health, food industry, environmental protection etc. application. It is in addition to for qualitatively and quantitatively analyzing, moreover it is possible to distribution coefficient, activity coefficient, molecular weight and ratio of the determination sample in stationary phase The physicochemical constants such as surface area.A kind of instrument carrying out analysis detection to each component in mixed gas.Sample introduction mechanism conduct The sample introduction testing tool of gas chromatograph, plays a key role whole measurement process.It uses at present most common into model machine Structure is syringe micro-sampling mechanism.However traditional syringe micro-sampling mechanism needs both hands control mostly, therefore using inadequate Flexibly.Simultaneously by both hands sample introduction in the way of so that operator is easy tired, and needle tubing gos deep into the bad control of length.

Utility model content

In view of the deficiencies of the prior art, the purpose of this utility model is to provide a kind of singlehanded mechanical sample introduction mechanism of chromatograph.

Technical solution adopted by the utility model to solve its technical problems is：A kind of chromatograph is singlehanded mechanical into model machine Structure, including sample introduction cylinder, be arranged in the sample introduction cylinder sample introduction piston, connect with the sample introduction piston push rod, be arranged in institute The needle tubing of sample introduction cylinder bottom is stated, open-topped cylindric sample cavity is equipped in the sample introduction cylinder, the sample introduction piston setting exists In the sample cavity, the needle tubing is connected to the sample cavity bottom, and the sample introduction cylinder, the sample introduction are stretched out at the top of the push rod Cylinder extends along the sample cavity axis direction, mounting plate is equipped at the top of the sample introduction cylinder, the mounting plate side has been pivotally connected Shaft, the shaft axis is horizontal, and the shaft is equipped with pawl disk, and ratchet, the ratchet periphery are cased with outside the pawl disk Equipped with driving gear, the mounting plate is equipped with the transmission gear engaged with the driving gear, and the push rod is equipped with along institute The rack of push rod length direction extension is stated, the rack is engaged with the transmission gear, and reduction torsion spring, institute are cased in the shaft Reduction torsion spring one end connection pawl disk is stated, the reduction torsion spring other end is connect with the mounting plate, and the pawl disk is equipped with Handle, the reduction torsion spring are applied with the handle elastic force of flip-over, and the pawl disk is equipped with matches with the ratchet The pawl body of conjunction, the handle are in contraction state, and the pawl body pushes the pawl disk rotation.

The grip of hand is converted to in above-mentioned design using the handle of rotation the centripetal force of sample introduction piston, convenient for it is singlehanded into Sample, pawl body, ratchet, transmission gear and rack, convenient for the oscillatory forces of handle to be converted into the thrust of push rod, structure letter It is single, it transmits precisely, sample size is easily controllable.

As being further improved for the design, the sample introduction cylinder top open part is equipped with guide sleeve, and the guide sleeve is equipped with Pilot hole, the pilot hole side wall is coordinated to be equipped with the recessing groove for accommodating the rack with the push rod, guide sleeve is conducive to push rod Guiding, convenient for engaging for rack and transmission gear.

As being further improved for the design, the resigning well width is more than or equal to two rack width, i.e., described Rack is located at the recessing groove side, and the rack is detached with the transmission gear, convenient for detaching rack with transmission gear, just In directly moving push rod sample introduction by hand push.

As being further improved for the design, it is equipped with the retaining ring buckled into convenient for finger at the top of the push rod, is pushed away convenient for finger Dynamic push rod sample introduction.

As being further improved for the design, sample introduction cylinder bottom is equipped with adjusting seat, and the adjusting seat periphery, which is equipped with, adjusts Whole external screw thread is cased with stop collar in the adjusting seat, be equipped in the stop collar in the adjustment of the adjustment external screw thread cooperation Screw thread, the needle tubing are stretched out from the stop collar bottom.Convenient for quickly adjusting needle tubing insertion, ensure each needle tubing insertion not Become, improves accuracy of detection.

As being further improved for the design, the root part of handle is the curved bar to arch upward outward, is sample introduction cylinder convenient for handle It steps down, lifting handle stroke.

The utility model has the beneficial effects that：The grip of hand is converted to sample introduction using the handle of rotation and lived by the utility model The centripetal force of plug, convenient for singlehanded sample introduction, pawl body, ratchet, transmission gear and rack, convenient for converting the oscillatory forces of handle It is simple in structure at the thrust of push rod, it transmits precisely, sample size is easily controllable.

Description of the drawings

The utility model is further illustrated with reference to the accompanying drawings and examples.

Fig. 1 is the whole diagrammatic cross-section of the utility model.

Fig. 2 is the pawl disk and ratchet cooperation schematic diagram of the utility model.

Fig. 3 is the guide sleeve and push rod cooperation schematic diagram of the utility model.

The 1. sample introduction cylinder in figure, 2. guide sleeves, 3. sample cavitys, 4. sample introduction pistons, 5. racks, 6. handles, 7. mounting plates, 8. Transmission gear, 9. driving gears, 10. ratchets, 11. retaining rings, 12. pawl disks, 13. pawl bodies, 14. reduction torsion springs, 15. push away Bar, 16. needle tubings, 17. stop collars, 18. adjusting seats, 19. shafts, 20. recessing grooves, 21. pilot holes.

Specific implementation mode

Be described in detail the utility model below in conjunction with attached drawing and specific embodiment, illustrative examples therein with And explanation is only used for explaining the utility model, but be not intended to limit the scope of the present invention.

Embodiment：A kind of singlehanded mechanical sample introduction mechanism of chromatograph, including sample introduction cylinder 1, be arranged in the sample introduction cylinder 1 into Needle tubing 16 in 1 bottom of sample introduction cylinder, the sample introduction cylinder 1 is arranged in sample piston 4, the push rod 15 being connect with the sample introduction piston 4 Interior to be equipped with open-topped cylindric sample cavity 3, the sample introduction piston 4 is arranged in the sample cavity 3, the needle tubing 16 and institute The connection of 3 bottom of sample cavity is stated, the sample introduction cylinder 1 is stretched out at 15 top of the push rod, and the sample introduction cylinder 1 is along 3 axis of the sample cavity Direction extends, and 1 top of the sample introduction cylinder is equipped with mounting plate 7, and 7 side of the mounting plate has been pivotally connected shaft 19, the shaft 19 axis horizontals, the shaft 19 are equipped with pawl disk 12, are cased with ratchet 10 outside the pawl disk 12,10 periphery of the ratchet is set There are driving gear 9, the mounting plate 7 to be equipped with the transmission gear 8 engaged with the driving gear 9, the push rod 15 is equipped with The rack 5 extended along 15 length direction of the push rod, the rack 5 are engaged with the transmission gear 8, are cased in the shaft 19 Reduction torsion spring 14,14 one end of the reduction torsion spring connect pawl disk 12, and 14 other end of the reduction torsion spring connects with the mounting plate 7 It connects, the pawl disk 12 is equipped with handle 6, and the reduction torsion spring 14 is applied with the handle 6 elastic force of flip-over, described Pawl disk 12 is equipped with the pawl body 13 coordinated with the ratchet 10, and the handle 6 is in contraction state, the pawl body 13 push the pawl disk 12 to rotate.

The grip of hand is converted to in above-mentioned design using the handle of rotation 6 centripetal force of sample introduction piston 4, convenient for it is singlehanded into Sample, pawl body 13, ratchet 10, transmission gear 8 and rack 5, convenient for the oscillatory forces of handle 6 are converted into pushing away for push rod 15 Power, it is simple in structure, it transmits precisely, sample size is easily controllable.

As being further improved for the design, 1 top open part of sample introduction cylinder is equipped with guide sleeve 2, and the guide sleeve 2 is set Have and coordinates pilot hole 21,21 side wall of the pilot hole to be equipped with the recessing groove 20 for accommodating the rack 5, guide sleeve with the push rod 15 2 are conducive to the guiding of push rod 15, convenient for engaging for rack 5 and transmission gear 8.

As being further improved for the design, 20 width of the recessing groove is more than or equal to two 5 width of the rack, i.e. institute It states rack 5 and is located at 20 side of the recessing groove, the rack 5 is detached with the transmission gear 8, is convenient for rack 5 and driving cog 8 separation of wheel, convenient for directly moving 15 sample introduction of push rod by hand push.

As being further improved for the design, 15 top of the push rod is equipped with the retaining ring 11 buckled into convenient for finger, is convenient for hand Refer to and pushes 15 sample introduction of push rod.

As being further improved for the design, 1 bottom of sample introduction cylinder is equipped with adjusting seat 18, and 18 periphery of the adjusting seat is set There is adjustment external screw thread, stop collar 17 is cased in the adjusting seat 18, is equipped in the stop collar 17 and matches with the adjustment external screw thread The adjustment internal thread of conjunction, the needle tubing 16 are stretched out from 17 bottom of the stop collar.Convenient for quickly adjusting 16 insertion of needle tubing, ensure 16 insertion of each needle tubing is constant, improves accuracy of detection.

As being further improved for the design, 6 root of the handle is the curved bar to arch upward outward, is sample introduction convenient for handle 6 Cylinder 1 is stepped down, 6 stroke of lifting handle.

The above description is only the embodiments of the present invention, and it does not limit the scope of the patent of the present invention, every Equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, is applied directly or indirectly in Other related technical areas are equally included in the patent within the scope of the utility model.

Claims (6)

1. a kind of singlehanded mechanical sample introduction mechanism of chromatograph, including sample introduction cylinder, the sample introduction piston that is arranged in the sample introduction cylinder and institute It states the push rod of sample introduction piston connection, the needle tubing in sample introduction cylinder bottom is set, which is characterized in that be equipped with top in the sample introduction cylinder The cylindric sample cavity of portion's opening, the sample introduction piston are arranged in the sample cavity, the needle tubing and the sample cavity bottom The sample introduction cylinder is stretched out at connection, the push rod top, and the sample introduction cylinder extends along the sample cavity axis direction, the sample introduction cylinder Top is equipped with mounting plate, and the mounting plate side has been pivotally connected shaft, and the shaft axis is horizontal, and the shaft is equipped with spine Pawl disk, the pawl disk are cased with ratchet outside, and the ratchet periphery is equipped with driving gear, and the mounting plate is equipped with and the active The transmission gear of gear engagement, the push rod are equipped with the rack that extends along the push rod length direction, the rack with it is described Transmission gear engages, and reduction torsion spring is cased in the shaft, and described reduction torsion spring one end connects pawl disk, and the reduction torsion spring is another One end is connect with the mounting plate, and the pawl disk is equipped with handle, and the reduction torsion spring is applied with the handle turned-out The elastic force turned, the pawl disk are equipped with the pawl body coordinated with the ratchet, and the handle is in contraction state, the spine Pawl ontology pushes the pawl disk rotation.

2. the singlehanded mechanical sample introduction mechanism of a kind of chromatograph according to claim 1, characterized in that opened at the top of the sample introduction cylinder Guide sleeve is equipped at mouth, the guide sleeve is equipped with coordinates pilot hole, the pilot hole side wall to be equipped with described in receiving with the push rod The recessing groove of rack.

3. the singlehanded mechanical sample introduction mechanism of a kind of chromatograph according to claim 2, characterized in that the resigning well width is big In equal to the two rack width, i.e., the described rack is located at the recessing groove side, the rack and the transmission gear point From.

4. the singlehanded mechanical sample introduction mechanism of a kind of chromatograph according to claim 3, characterized in that be equipped at the top of the push rod The retaining ring buckled into convenient for finger.

5. the singlehanded mechanical sample introduction mechanism of a kind of chromatograph according to claim 1, characterized in that sample introduction cylinder bottom is set There are adjusting seat, the adjusting seat periphery to be equipped with adjustment external screw thread, be cased with stop collar in the adjusting seat, be equipped in the stop collar With the adjustment internal thread of the adjustment external screw thread cooperation, the needle tubing is stretched out from the stop collar bottom.

6. the singlehanded mechanical sample introduction mechanism of a kind of chromatograph described in claim 1, characterized in that the root part of handle is to bowed out The curved bar risen.