CN209979568U - Sample introduction device for gas chromatography - Google Patents
Sample introduction device for gas chromatography Download PDFInfo
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- CN209979568U CN209979568U CN201920269244.8U CN201920269244U CN209979568U CN 209979568 U CN209979568 U CN 209979568U CN 201920269244 U CN201920269244 U CN 201920269244U CN 209979568 U CN209979568 U CN 209979568U
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Abstract
The utility model discloses a sampling device for gas chromatography, including gas chromatograph, gas chromatograph's top is provided with the introduction port, the internal surface of spout rotates through the bearing and is connected with the lead screw, the top fixedly connected with motor of first bracing piece, the first arc of right-hand member fixedly connected with of connecting rod, the bottom of first arc is seted up flutedly, the internal surface fixedly connected with spring of telescopic cylinder, the internal surface sliding connection of telescopic cylinder has the connecting block, the left end fixedly connected with second arc of connecting block is provided with the sample injector between the internal surface of first arc and second arc. The utility model discloses a set up first arc and second arc and utilize spring force with the injector rigidity, reached the effect of the fixed injector of being convenient for, detain the outage that the wage motor is just reversing through the setting, reach the effect that the control sampling needle of being convenient for got into introduction port length.
Description
Technical Field
The utility model relates to the technical field, specifically be a sampling device for gas chromatography.
Background
Gas chromatography is the detection and analysis of gaseous substances or substances that can be converted to gases at a certain temperature. The distribution coefficients of each component in the sample between gas phase and fixed liquid phase are different due to different physical properties of the substances, when the vaporized sample is carried into a chromatographic column by carrier gas to operate, the components are repeatedly distributed between the two phases, although the carrier gas flow rate is the same, the operation speed of each component in the chromatographic column is different due to different adsorption or dissolution capacities of the fixed phase relative to each component, after a certain period of flow, the components are separated from each other and leave the chromatographic column in sequence to enter a detector, and the generated signals are amplified and then the chromatographic peaks of the components are depicted on a recorder. According to the peak position, confirm the name of component, according to peak area determination concentration size, this is exactly the theory of operation of gas chromatograph, when utilizing gas chromatograph to detect the sample, mainly rely on the staff to carry out manual introduction, and manual introduction just need utilize the microsyringe, but current microsyringe injection needle is generally all longer, when using, need the length that the laboratory staff range estimation injection needle got into the introduction port, the length that leads to the injection needle to get into the introduction port is difficult to keep unanimous, make the instantaneous gasification degree of sample differ, thereby lead to the reproducibility of experiment poor, simultaneously the sampling device that current gas chromatograph used is more poor in the effect of position fixing on gas chromatograph, thereby be difficult to guarantee the stability when advancing the appearance, consequently, need to improve.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a sampling device for gas chromatography has possessed the control sample injection needle of being convenient for and has got into introduction port length and fixed effectual advantage, has solved the length that is not convenient for among the prior art control sample injection needle gets into the introduction port and the problem of being not convenient for fix.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a sampling device for gas chromatography, includes gas chromatograph, gas chromatograph's top is provided with the introduction port, gas chromatograph's top is provided with the support frame, be close to the first bracing piece of top fixedly connected with of right-hand member on the support frame.
The surface of the first supporting rod is provided with a sliding groove, the inner surface of the sliding groove is rotatably connected with a screw rod through a bearing, the top of the first supporting rod is fixedly connected with a motor, an output shaft of the motor is fixedly connected with the top of the screw rod through a coupler, the surface of the screw rod is in threaded connection with a connecting rod, the surface of the connecting rod is in sliding connection with the inner surface of the sliding groove, the right end of the connecting rod is fixedly connected with a first arc plate, the bottom of the first arc plate is provided with a groove, the top of the supporting frame close to the right end is fixedly connected with a second supporting rod, the surface of the second supporting rod is provided with a sliding rail, the inner surface of the sliding rail is in sliding connection with a telescopic cylinder, the inner surface of the telescopic cylinder is fixedly connected with a spring, the inner, the left end fixedly connected with second arc of connecting block, the bottom of second arc is seted up flutedly, be provided with the sample injector between the internal surface of first arc and second arc, the through-hole has been seted up on the surface that is close to its top on the support frame.
Preferably, the surface of the first arc-shaped plate is provided with a clamping groove, the surface of the second arc-shaped plate is provided with a clamping block, and the inner surface of the clamping groove is clamped with the surface of the clamping block.
Preferably, the surface of the first support rod is fixedly connected with a control switch, and the control switch is electrically connected with the motor.
Preferably, the inner surfaces of the first arc-shaped plate and the second arc-shaped plate are fixedly connected with gaskets.
Preferably, the aperture of the through hole is larger than that of the needle tube on the sample injector.
Compared with the prior art, the beneficial effects of the utility model are as follows:
the utility model discloses a set up between first arc and the second arc through fixture block and draw-in groove joint, drive second arc synchronous motion when making first arc reciprocate, and it is more firm to make first arc and second arc with the sample injector rigidity, through the internal surface ancient spindle connection gasket at first arc and second arc, reached and prevented that first arc and second arc from causing the damage to the sample injector, aperture through setting up the through-hole is greater than the aperture of sample injector, reached the effect that the needle tubing on the sample injector of being convenient for passed the through-hole.
Secondly, the utility model discloses a setting up the pulling second arc, make the second arc remove right, the second arc extrudees the spring through the connecting block, the spring warp produces elasticity, then put the sample injector between first arc and second arc, the second arc of unclamping, at this moment the spring releases elasticity, and make the second arc remove left through the connecting block, and make the fixture block and draw-in groove joint, fix the sample injector between first arc and second arc, thereby reach the effect convenient to fix the sample injector, then make the motor rotate through control switch, the motor rotates and drives the lead screw to rotate, because lead screw and connecting rod threaded connection, and the internal surface of spout restricts the connecting rod rotation, thereby make the connecting rod move down on the surface of lead screw, the connecting rod drives first arc and moves down, because pass through fixture block and draw-in groove joint between first arc and the second arc, thereby make first arc and second arc synchronous motion to make first arc and second arc drive the sampler downstream, remove and close the motor through control switch after the suitable position, thereby reach the effect of being convenient for control sample injection needle entering injection port length.
Drawings
Fig. 1 is a cross-sectional view of a front view of the present invention;
fig. 2 is a cross-sectional view of a top view of the first arc plate and the second arc plate of the present invention.
In the figure: the device comprises a gas chromatograph 1, a sample inlet 2, a support frame 3, a first support rod 4, a sliding chute 5, a bearing 6, a screw rod 7, a motor 8, a connecting rod 9, a first arc-shaped plate 10, a groove 11, a second support rod 12, a sliding rail 13, a telescopic cylinder 14, a spring 15, a connecting block 16, a second arc-shaped plate 17, a sample injector 18, a through hole 19, a clamping groove 20, a clamping block 21, a control switch 22 and a gasket 23.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 2, the present invention provides a technical solution: the utility model provides a sampling device for gas chromatography, includes gas chromatograph 1, and gas chromatograph 1's top is provided with introduction port 2, and the inside gaseous inside of waiting of injector 18 is waited to detect and is admitted gas chromatograph 1 through introduction port 2 row, and gas chromatograph 1's top is provided with support frame 3, and support frame 3 is in the utility model discloses in play the effect of supporting this sampling device for gas chromatography, be close to the first bracing piece 4 of top fixedly connected with of right-hand member on the support frame 3, the fixed surface of first bracing piece 4 is connected with control switch 22, control switch 22 and 8 electric connection of motor.
Referring to fig. 1 to 2, a sliding groove 5 is formed on the surface of a first supporting rod 4, the inner surface of the sliding groove 5 is slidably connected with the surface of a connecting rod 9 and prevents the connecting rod 9 from rotating, a lead screw 7 is rotatably connected to the inner surface of the sliding groove 5 through a bearing 6, when a motor 8 rotates, the motor 8 rotates to drive the lead screw 7 to rotate, the lead screw 7 is in threaded connection with the connecting rod 9, and the inner surface of the sliding groove 5 limits the connecting rod 9 to rotate, so that the connecting rod 9 moves up and down on the surface of the lead screw 7, the connecting rod 9 drives a first arc-shaped plate 10 to move up and down, as the first arc-shaped plate 10 and a second arc-shaped plate 17 are clamped through a clamping block 21 and a clamping groove 20, the first arc-shaped plate 10 and the second arc-shaped plate 17 synchronously move, so that the first arc-shaped plate 10 and the second arc-shaped plate, the motor 8 is electrically connected with the control switch 22 and is powered by an external power supply, which provides power for the utility model, the output shaft of the motor 8 is fixedly connected with the top of the screw 7 through a shaft coupling, the surface thread of the screw 7 is connected with the connecting rod 9, when the screw 7 rotates, the connecting rod 9 moves up and down along the screw 7 direction and drives the first arc-shaped plate 10 to move up and down, the surface of the connecting rod 9 is connected on the inner surface of the chute 5 in a sliding way, the right end of the connecting rod 9 is fixedly connected with the first arc-shaped plate 10, the first arc-shaped plate 10 and the second arc-shaped plate 17 fix the position of the sample injector 18 through the clamping groove 20 and the clamping block 21, the clamping groove 20 is arranged on the surface of the first arc-shaped plate 10, the clamping block 21 is arranged on the surface of the second arc-shaped plate 17, the clamping groove 20 is clamped with the surface of the clamping, the device comprises a first arc-shaped plate 10, a second arc-shaped plate 17, a gasket 23, a groove 11, a sample injector 18, a support frame 3, a second support rod 12, a slide rail 13, a telescopic cylinder 14, a slide rail 13, a slide rail 12, a slide rail 13, a slide rail 14, a telescopic cylinder 14, a slide rail 14, the inner surface of the telescopic cylinder 14 is fixedly connected with a spring 15, the spring 15 provides an elastic force moving leftwards for the second arc-shaped plate 17, so that the second arc-shaped plate 17 and the first arc-shaped plate 10 fix the position of the sample injector 18, the inner surface of the telescopic cylinder 14 is slidably connected with a connecting block 16, the right end of the connecting block 16 is fixedly connected with the left end of the spring 15, the left end of the connecting block 16 is fixedly connected with the second arc-shaped plate 17, when the sample injector 18 is fixed, the second arc-shaped plate 17 is pulled to move rightwards, the second arc-shaped plate 17 extrudes the spring 15 through the connecting block 16, the spring 15 deforms to generate an elastic force, then the sample injector 18 is placed between the first arc-shaped plate 10 and the second arc-shaped plate 17, the second arc-shaped plate 17 is loosened, the spring 15 releases the elastic force, the second arc-shaped plate 17 moves leftwards through the connecting block 16, the clamping block 21 is clamped with the clamping groove 20, and the sample injector, recess 11 has been seted up to the bottom of second arc 17, be provided with injector 18 between the internal surface of first arc 10 and second arc 17, injector 18 is this technical field uses microsyringe, be used for the inside of gaseous row of awaiting measuring into gas chromatograph 1, through-hole 19 has been seted up on the surface that is close to its top on the support frame 3, through-hole 19 gets into the inside of introduction port 2 is passed through to injector 18's bottom, the aperture of through-hole 19 is greater than the aperture of needle tubing on injector 18, the aperture through setting up through-hole 19 is greater than the aperture of injector 18, the effect that the needle tubing on the injector 18 of being convenient for passed through-hole 19 has been reached.
The working principle is as follows: when the sample injection device for the gas chromatography is used, the second arc-shaped plate 17 is pulled to enable the second arc-shaped plate 17 to move rightwards, the second arc-shaped plate 17 extrudes the spring 15 through the connecting block 16, the spring 15 deforms to generate elastic force, then the sample injector 18 is placed between the first arc-shaped plate 10 and the second arc-shaped plate 17, the loosened second arc-shaped plate 17 is loosened, the spring 15 releases the elastic force, the second arc-shaped plate 17 moves leftwards through the connecting block 16, the clamping block 21 is clamped with the clamping groove 20, the sample injector 19 is fixed between the first arc-shaped plate 10 and the second arc-shaped plate 17, then the motor 8 rotates through the control switch 22, the lead screw 7 is driven to rotate by the rotation of the motor 8, the lead screw 7 is in threaded connection with the connecting rod 9, the inner surface of the sliding groove 5 limits the rotation of the connecting rod 9, so that the connecting rod 9 moves downwards on the surface of the lead screw 7, because connect through fixture block 21 and draw-in groove 20 joint between first arc 10 and the second arc 17, thereby make first arc 10 and second arc 17 synchronous motion, thereby make first arc 10 and second arc 17 drive sampler 18 downstream, remove and close motor 8 through control switch 22 after the suitable position, then will wait to detect gaseous inside of passing through introduction port 2 row inlet image chromatograph 1 through injector 18, when taking out injector 18, make motor 8 antiport through control switch 22, cooperation through between the above-mentioned structure, make injector 18 rebound, then take out injector 18.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that 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 (5)
1. The utility model provides a sampling device for gas chromatography, includes gas chromatograph (1), the top of gas chromatograph (1) is provided with introduction port (2), the top of gas chromatograph (1) is provided with support frame (3), its characterized in that: the top of the support frame (3) close to the right end is fixedly connected with a first support rod (4);
the surface of the first supporting rod (4) is provided with a sliding groove (5), the inner surface of the sliding groove (5) is rotatably connected with a screw rod (7) through a bearing (6), the top of the first supporting rod (4) is fixedly connected with a motor (8), an output shaft of the motor (8) is fixedly connected with the top of the screw rod (7) through a coupler, the surface of the screw rod (7) is in threaded connection with a connecting rod (9), the surface of the connecting rod (9) is connected onto the inner surface of the sliding groove (5) in a sliding manner, the right end of the connecting rod (9) is fixedly connected with a first arc-shaped plate (10), the bottom of the first arc-shaped plate (10) is provided with a groove (11), the top of the supporting frame (3) close to the right end is fixedly connected with a second supporting rod (12), the surface of the second supporting rod (12) is provided with a sliding rail (13), the inner, the internal surface fixed connection of a telescopic cylinder (14) has spring (15), the internal surface sliding connection of a telescopic cylinder (14) has connecting block (16), the right-hand member of connecting block (16) and the left end fixed connection of spring (15), the left end fixed connection of connecting block (16) has second arc (17), recess (11) are seted up to the bottom of second arc (17), be provided with sample injector (18) between the internal surface of first arc (10) and second arc (17), through-hole (19) have been seted up on support frame (3) near the surface at its top.
2. The sample introduction device for gas chromatography according to claim 1, characterized in that: the clamping groove (20) is formed in the surface of the first arc-shaped plate (10), the clamping block (21) is formed in the surface of the second arc-shaped plate (17), and the inner surface of the clamping groove (20) is clamped with the surface of the clamping block (21).
3. The sample introduction device for gas chromatography according to claim 1, characterized in that: the surface of the first supporting rod (4) is fixedly connected with a control switch (22), and the control switch (22) is electrically connected with the motor (8).
4. The sample introduction device for gas chromatography according to claim 1, characterized in that: the inner surfaces of the first arc-shaped plate (10) and the second arc-shaped plate (17) are fixedly connected with gaskets (23).
5. The sample introduction device for gas chromatography according to claim 1, characterized in that: the aperture of the through hole (19) is larger than that of the needle tube on the sample injector (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920269244.8U CN209979568U (en) | 2019-03-04 | 2019-03-04 | Sample introduction device for gas chromatography |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920269244.8U CN209979568U (en) | 2019-03-04 | 2019-03-04 | Sample introduction device for gas chromatography |
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| Publication Number | Publication Date |
|---|---|
| CN209979568U true CN209979568U (en) | 2020-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920269244.8U Active CN209979568U (en) | 2019-03-04 | 2019-03-04 | Sample introduction device for gas chromatography |
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| CN (1) | CN209979568U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112147245A (en) * | 2020-09-07 | 2020-12-29 | 浙江安联检测技术服务有限公司 | Gas chromatography device |
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2019
- 2019-03-04 CN CN201920269244.8U patent/CN209979568U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112147245A (en) * | 2020-09-07 | 2020-12-29 | 浙江安联检测技术服务有限公司 | Gas chromatography device |
| CN112147245B (en) * | 2020-09-07 | 2022-08-02 | 浙江安联检测技术服务有限公司 | Gas chromatography device |
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