CN204479533U - A kind of sample introduction attachment device of gas chromatograph - Google Patents
A kind of sample introduction attachment device of gas chromatograph Download PDFInfo
- Publication number
- CN204479533U CN204479533U CN201520121660.5U CN201520121660U CN204479533U CN 204479533 U CN204479533 U CN 204479533U CN 201520121660 U CN201520121660 U CN 201520121660U CN 204479533 U CN204479533 U CN 204479533U
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- CN
- China
- Prior art keywords
- rubber cushion
- base
- gland
- sample introduction
- gas chromatograph
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses a kind of sample introduction attachment device of gas chromatograph, comprise base, rubber cushion, gland; Sample holes is respectively equipped with in the middle part of base and gland; Base is connected by threaded fastener with gland; Rubber cushion is rectangular-shaped, offers the strip groove of a transverse direction in the middle part of base top surface, rubber cushion and strip groove fit; The one end open of strip groove, threaded hole is offered by the wall of the other end, is bolted with threaded rod in threaded hole, and one end of threaded rod is articulated on an end face of rubber cushion.When rubber cushion is because of repeatedly sample introduction after local failure, as long as unscrew gland, operator's rotating threaded rod, the displacement that threaded rod drives rubber cushion mobile certain in strip groove, then screw gland, so, rubber cushion just can continuation use as new.By technique scheme, rubber cushion can be fully used; And operator departs from base without the need to making gland, and simple, convenient, rubber cushion is not vulnerable to extraneous pollution.
Description
Technical field
The utility model relates to one and is sealed into sampling device, in particular to a kind of sample introduction attachment device of gas chromatograph.
Background technology
Gas chromatography, gas chromatography and mass spectromentry instrument are one of key instruments carrying out chemical compositions and content analysis qualification, have apply extremely widely in fields such as petrochemical complex, food, medicine, environmental protection.At present, the injection port of traditional gas chromatography, gas chromatography and mass spectromentry instrument, generally by sample introduction pedestal 10, the gland 20 be screwed onto on sample introduction pedestal 10, the rubber blanket 30 be arranged between sample introduction pedestal 10 and gland forms, and be provided with sample holes 40 at the middle part of gland 20, consult shown in Fig. 1, when carrying out the sample introduction of liquid or gas, first use syringe pipette samples, then syringe needle is inserted along sample holes 40, prick the rubber blanket 30 pierced between sample pedestal 10 and gland, sample is injected instrument; The effect that the passage that the existing sampling of rubber blanket 30 enters instrument has again the carrier gas preventing instrument to overflow simultaneously, require high temperature resistant, pollution-free, thus cost is higher; Position due to sample holes 40 is positioned at the center of rubber blanket 30, and every block rubber blanket 30 generally maximum use just needs for about 10 times to change, and causes the use cost of instrument high.
Utility model content
The technical matters that the utility model solves: traditional gas chromatography, the position due to sample holes is positioned at the center of rubber blanket, and every block rubber blanket generally maximum use just needs for about 10 times to change, and causes the use cost of instrument high.
The utility model provides following technical scheme: a kind of sample introduction attachment device of gas chromatograph, comprises base, rubber cushion, gland; The sample holes of coaxial inner conductor is respectively equipped with in the middle part of described base and gland; The connecting screw hole matched with the sample introduction pedestal of gas chromatograph is provided with in the bottom of base; Base is connected by threaded fastener with gland, and described rubber cushion is arranged between base and gland, and described rubber cushion is rectangular-shaped, offers the strip groove of a transverse direction in the middle part of described base top surface, described rubber cushion and strip groove fit; The one end open of described strip groove, threaded hole is offered by the wall of the other end, is bolted with threaded rod in threaded hole, and one end of threaded rod is articulated on an end face of rubber cushion.
By technique scheme, be spun on by base on sample introduction pedestal, rubber cushion is arranged in strip groove, and threaded rod screws in threaded hole, and one end of threaded rod is articulated in one end of rubber cushion; Be fixedly connected on base finally by threaded fastener by gland, rubber cushion is glanded and is pressed in strip groove, and namely usable syringes injects sample by sample holes in instrument.Wherein, the leading section of rubber cushion is passed by the hole heart line of sample holes, i.e. the leading section sealing sample holes of rubber cushion, the rear end of rubber cushion and threaded rod pivot joint.When rubber cushion is because of repeatedly sample introduction and after local failure, as long as unscrew gland (gland does not depart from base), rubber cushion is loosened, operator's rotating threaded rod, the displacement that threaded rod drives rubber cushion mobile certain in strip groove, afterwards, then screws gland, so, rubber cushion just can use as new in continuation.
By technique scheme, constantly change the contact position of rubber cushion and sample holes, so, rubber cushion can be fully used.And operator departs from base without the need to making gland, and simple, convenient, rubber cushion is not vulnerable to extraneous pollution.
Illustrate as one of the present utility model, the end face of described base is offered a pair screw, described a pair screw is positioned at the both sides of strip groove; Base is linked together with coordinating of screw by screw with gland.
Further illustrate as of the present utility model, the degree of depth of described strip groove is less than the thickness of rubber cushion.The degree of depth of strip groove is less than the thickness of rubber cushion, and rubber cushion, under the compressing of gland and base, elastic deformation occurs, and so, rubber cushion can play good sealing function.
Further illustrate as of the present utility model, the profile of described base can be rectangular-shaped, also can be in the form of annular discs.If when the profile of base is in the form of annular discs, described base side wall is provided with a kerf, and this otch comprises vertical plane and horizontal bottom, and described threaded hole is through the vertical plane of otch.Design like this, makes strip groove be provided with the wall of one end of threaded hole thinning, and then increases threaded rod and drive the shift length of rubber cushion in strip groove.
Further illustrate as of the present utility model, one end of threaded rod is articulated on an end face of rubber cushion in the following way: an end face of described rubber cushion offers solid of revolution groove, the longitudinal section of described solid of revolution groove is T-shaped, the end of described threaded rod is bolted with dish type projecting block, and described dish type projecting block is fastened in solid of revolution groove.Rubber cushion has certain retractility, and described dish type projecting block can utilize the retractility of rubber cushion to snap in solid of revolution groove, and afterwards, threaded rod and dish type projecting block are spirally connected.
Further illustrate as of the present utility model, between described base and pedestal, be provided with rubber blanket.Namely original rubber blanket still can retain use.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described further:
Fig. 1 is the structural representation of injection port device of traditional gas chromatography, gas chromatography and mass spectromentry instrument;
Fig. 2 is the structural representation of the sample introduction attachment device of a kind of gas chromatograph of the utility model;
Fig. 3 is the vertical view of Fig. 2;
Fig. 4 is the structural representation of base in Fig. 2;
Fig. 5 is the vertical view of Fig. 4.
Embodiment
Composition graphs 2, Fig. 3, a kind of sample introduction attachment device of gas chromatograph, comprises base 50, rubber cushion 60, gland 20.The sample holes 40 of coaxial inner conductor is respectively equipped with in the middle part of described base 50 and gland 20; Be provided with the connecting screw hole matched with the sample introduction pedestal 10 of gas chromatograph in the bottom of base 50, between described base 50 and sample introduction pedestal 10, be provided with rubber blanket 30; Base 50 is connected by threaded fastener with gland 20, and described rubber cushion 60 is arranged between base 50 and gland 20, and described rubber cushion 60 is in rectangular-shaped.
Composition graphs 4, Fig. 5, the profile of described base 50 is in the form of annular discs, offers the strip groove 500 of a transverse direction, a pair screw 51 in the middle part of described base 50 end face.Described rubber cushion 60 coordinates with strip groove 500, and the degree of depth of described strip groove 500 is less than the thickness of rubber cushion 60; The one end open of described strip groove 500, the wall of the other end is offered threaded hole 501, is bolted with threaded rod 70 in threaded hole 501, and one end of threaded rod 70 is articulated on an end face of rubber cushion 60.Described a pair screw 51 is positioned at the both sides of strip groove 500; Composition graphs 2, Fig. 3, base 50 is linked together with coordinating of screw 51 by screw 80 with gland 20.Composition graphs 4, Fig. 5, described base 50 sidewall is provided with a kerf 52, and this otch 52 comprises vertical plane 521 and horizontal bottom 522, and described threaded hole 501 is through the vertical plane 521 of otch.
One end of above-mentioned threaded rod 70 is articulated on an end face of rubber cushion 60 in the following way: an end face of described rubber cushion 60 offers solid of revolution groove 600, the longitudinal section of described solid of revolution groove 600 is T-shaped, the end of described threaded rod 70 is bolted with dish type projecting block 71, and described dish type projecting block 71 is fastened in solid of revolution groove 600.
In practical operation, be spun on by base 50 on sample introduction pedestal 10, rubber cushion 60 is arranged in strip groove 500, and threaded rod 70 screws in threaded hole 501, and one end of threaded rod 70 is articulated in one end of rubber cushion 60; Be fixedly connected with on base 50 finally by screw 80 by gland 20, rubber cushion 60 is glanded 20 and is pressed in strip groove 500, and namely usable syringes injects sample by sample holes 40 in instrument.Wherein, the leading section of rubber cushion 60 is passed by the hole heart line of sample holes 40, i.e. the leading section sealing sample holes 40 of rubber cushion 60, the rear end of rubber cushion 60 and threaded rod 70 pivot joint.When rubber cushion 60 is because of repeatedly sample introduction and after local failure, as long as unscrew gland 20 (gland 20 does not depart from base 50), rubber cushion 60 is loosened, operator's rotating threaded rod 70, the displacement that threaded rod 70 drives rubber cushion 60 mobile certain in strip groove 500, afterwards, then screws gland 20, so, rubber cushion 60 just can use as new in continuation.
Above content is only better embodiment of the present utility model, for those of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, this description should not be construed as restriction of the present utility model.
Claims (7)
1. a sample introduction attachment device for gas chromatograph, comprises base (50), rubber cushion (60), gland (20); Described base (50) and gland (20) middle part are respectively equipped with the sample holes (40) of coaxial inner conductor; The connecting screw hole matched with the sample introduction pedestal (10) of gas chromatograph is provided with in the bottom of base (50); Base (50) is connected by threaded fastener with gland (20), described rubber cushion (60) is arranged between base (50) and gland (20), it is characterized in that: described rubber cushion (60) is in rectangular-shaped, offer the strip groove (500) of a transverse direction in the middle part of described base (50) end face, described rubber cushion (60) coordinates with strip groove (500); The one end open of described strip groove (500), the wall of the other end is offered threaded hole (501), be bolted with threaded rod (70) in threaded hole (501), one end of threaded rod (70) is articulated on an end face of rubber cushion (60).
2. the sample introduction attachment device of a kind of gas chromatograph as claimed in claim 1, it is characterized in that: the end face of described base (50) is offered a pair screw (51), described a pair screw (51) is positioned at the both sides of strip groove (500); Base (50) is linked together with coordinating of screw (51) by screw (80) with gland (20).
3. the sample introduction attachment device of a kind of gas chromatograph as claimed in claim 1, is characterized in that: the degree of depth of described strip groove (500) is less than the thickness of rubber cushion (60).
4. the sample introduction attachment device of a kind of gas chromatograph as claimed in claim 1, is characterized in that: the profile of described base (50) is rectangular-shaped.
5. the sample introduction attachment device of a kind of gas chromatograph as claimed in claim 1, it is characterized in that: the profile of described base (50) is in the form of annular discs, described base (50) sidewall is provided with a kerf (52), this otch (52) comprises vertical plane (521) and horizontal bottom (522), and described threaded hole (501) is through the vertical plane (521) of otch.
6. the sample introduction attachment device of a kind of gas chromatograph as claimed in claim 1, it is characterized in that: an end face of described rubber cushion (60) is offered solid of revolution groove (600), the longitudinal section of described solid of revolution groove (600) is T-shaped, the end of described threaded rod (70) is bolted with dish type projecting block (71), and described dish type projecting block (71) is fastened in solid of revolution groove (600).
7. the sample introduction attachment device of a kind of gas chromatograph as claimed in claim 1, is characterized in that: be provided with rubber blanket (30) between described base (50) and sample introduction pedestal (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520121660.5U CN204479533U (en) | 2015-03-02 | 2015-03-02 | A kind of sample introduction attachment device of gas chromatograph |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520121660.5U CN204479533U (en) | 2015-03-02 | 2015-03-02 | A kind of sample introduction attachment device of gas chromatograph |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204479533U true CN204479533U (en) | 2015-07-15 |
Family
ID=53635320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520121660.5U Expired - Fee Related CN204479533U (en) | 2015-03-02 | 2015-03-02 | A kind of sample introduction attachment device of gas chromatograph |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204479533U (en) |
-
2015
- 2015-03-02 CN CN201520121660.5U patent/CN204479533U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150715 Termination date: 20170302 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |