CN210119475U - Gas chromatography-mass spectrum interface seal compression ring pressing device - Google Patents
Gas chromatography-mass spectrum interface seal compression ring pressing device Download PDFInfo
- Publication number
- CN210119475U CN210119475U CN201920135986.1U CN201920135986U CN210119475U CN 210119475 U CN210119475 U CN 210119475U CN 201920135986 U CN201920135986 U CN 201920135986U CN 210119475 U CN210119475 U CN 210119475U
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- China
- Prior art keywords
- interface
- chromatographic column
- ejector rod
- sealing
- connecting body
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- Expired - Fee Related
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Abstract
The utility model relates to a gas chromatography-mass spectrum interface seal clamping ring closing device, including hookup body, ejector pin, amplitude limiting nut and packing ring, as the usefulness that capillary chromatographic column (for short chromatographic column, lower with) compressed tightly the seal clamping ring with the interface department of meeting in the gas chromatography-mass spectrum combined instrument to realize vacuum system and outside air in the sealed of kneck. The method is characterized in that: the connecting body is respectively connected with the interface and the ejector rod; the ejector rod is provided with a groove in the axial direction, one end of the ejector rod is provided with a boss, and the boss pushes the gasket and the sealing press ring to the interface to realize sealing; the limiting nut is screwed on the head part of the top rod and is used for limiting the swing amplitude of the chromatographic column. The device is effective in sealing and preventing metal weight such as screw cap from being scratched or even broken when the column is disassembled.
Description
Technical Field
The utility model relates to a gas chromatography-mass spectrum interface seal clamping ring closing device belongs to and detects laboratory instrument subassembly.
Background
In the gas chromatography-mass spectrometer, a chromatographic column extends into a vacuum cavity of a mass spectrometer, and a sealing pressure ring is used for sealing an interface so as to prevent air from leaking into the interface. And the sealing press ring is pressed tightly by using an interface nut. The method has the advantages that: simple structure and good pressing effect. However, when the chromatographic column needs to be detached from the interface, the sealing press ring is tightly held on the chromatographic column and is not easy to detach, and the interface nut sleeved on the chromatographic column cannot be detached as long as the sealing press ring is left on the chromatographic column. Therefore, when disassembling or only replacing the chromatographic column and determining to reuse the sealing press ring, the operator needs to be careful and skilled enough, otherwise the chromatographic column is easily damaged and even broken by the gravity of the interface nut.
Disclosure of Invention
The utility model discloses can partly keep and raise above-mentioned advantage and can overcome above-mentioned problem of existence, provide a convenient to use, compress tightly effectual gas chromatography-mass spectrum interface seal clamping ring closing device.
The technical solution of the utility model is as follows.
1. The two ends of the connecting body are provided with internal threads which can be respectively connected with the interface and the ejector rod; the middle part is provided with a sealing pressure ring restraint tube, and the inner diameter of the sealing pressure ring restraint tube is 0.5mm larger than the diameter of the sealing pressure ring so as to prevent the sealing pressure ring from generating transverse displacement when being pressed and at high temperature.
2. The gasket is a circular sheet with the diameter being the same as that of the sealing pressure ring, the thickness of the circular sheet is 1mm, and a circular hole with the diameter being 1mm is arranged in the middle of the circular sheet.
3. The larger end of the ejector rod is provided with a screw which can be screwed into the limiting nut; the small end is provided with a boss without threads, and the boss is used for pushing the gasket and sealing the compression ring; the screw rod is arranged behind the lug boss and can be screwed into the connecting body; the ejector rod is provided with an axial groove with the width of 0.7mm, and the chromatographic column can move in the axial groove; in order to facilitate the turning of the ejector rod, a turning groove is arranged in the middle of the screw rod.
4. The amplitude limiting nut is provided with a horn-shaped opening in the axial direction, the inner diameter of the minimum opening is larger than the diameter of the sealing press ring, and the gasket and the sealing press ring can easily pass through the opening; the limiting nut is used for limiting the swing amplitude of the chromatographic column and reducing the probability that the chromatographic column is scraped by the ejector rod groove.
5. When the column is installed, the connecting body is screwed on the interface; sequentially sleeving a gasket and a sealing pressure ring at one end of the chromatographic column connected with the interface, measuring the length of the chromatographic column to be inserted into the interface, and marking; sleeving a limiting nut from the end of the chromatographic column and passing over the sealing pressure ring and the gasket; carefully moving the end head of the chromatographic column together with the sealing press ring and the gasket into the connecting body, and continuously pushing the chromatographic column to be inserted into the interface; the method comprises the steps of moving a push rod to a chromatographic column and enabling the chromatographic column to enter a groove of the push rod, enabling one end with a boss to face a connecting body, then screwing an amplitude limiting nut on a screw rod of the push rod, screwing the other end of the screw rod into the connecting body, pushing a gasket and a sealing press ring into a constraint tube, screwing the limiting nut and the connecting body by hand until the limiting nut is tightened, pushing the chromatographic column to a set depth, and finally turning the push rod by a wrench until the sealing is good.
6. When the column is disassembled, the operation is reversed, the chromatographic column can be easily taken out and separated from the ejector rod and the limiting screw cap.
The connecting body, the ejector rod, the limiting nut and the washer are all made of brass or stainless steel.
The utility model discloses the same with prior art is: the pressing sealing ring is screwed in and pressed tightly through threads.
The utility model discloses the characteristic different with prior art is: when the chromatographic column needs to be detached from the interface, the ejector rod and the limiting screw cap can be moved out of the chromatographic column, so that metal heavy objects such as the screw cap and the like can be prevented from being scratched or even broken when being sleeved on the chromatographic column.
Drawings
Fig. 1 is a schematic view of the connection of the components of the present invention.
Fig. 2 is a sectional view of the coupling body.
Fig. 3 is a front view of the jack.
Fig. 4 is a plan view of the jack.
Fig. 5 is a left side view of the jack.
Fig. 6 is a cross-sectional view of the limiter nut.
In fig. 1 to 6, a coupling body (1), a carrier rod (2), a limiting nut (3), a gasket (4), a sealing press ring (5), an interface (6), a chromatographic column (7), a constraint tube (11), a boss (21), a groove (22), and a wrenching groove (23).
Detailed Description
Referring to the shapes and structures of fig. 1 to 6, the following steps are performed.
1. The coupling body 1: the shape is a hexagonal tubular body, internal threads are arranged at two ends of the hexagonal tubular body, and the hexagonal tubular body can be respectively connected with the interface 6 and the ejector rod 2; the middle part of the sealing press ring is processed into a restraint tube 11 with a smaller diameter for restraining the sealing press ring 5 so that the sealing press ring can not generate transverse displacement when being pressed and at high temperature, and the diameter of the restraint tube 11 is 0.5mm larger than that of the sealing press ring 5.
2. Gasket 4: the sealing press ring is a wafer with the diameter being the same as that of the sealing press ring 5, and the thickness of the wafer is 1mm, so that the wafer is ensured not to deform when being extruded; the washer 4 has a circular hole with a diameter of 1mm in the middle.
3. And (3) a mandril 2: the sealing device is a screw rod which is provided with a wrenching groove 23 and a groove 22 with the width of 0.7mm in the axial direction, one end of the screw rod is provided with a boss 21, and the boss is used for pushing the sealing press ring 5 through a gasket 4 so as to realize the sealing of the interface 6 and the outer wall surface of the chromatographic column 7; the chromatographic column 7 can move in the groove 22; one end of the mandril 2 with the lug boss 21 can be screwed into the connecting body 1 to be connected with the connecting body; the other end of the mandril 2 can be screwed into the limiting nut 3 to be connected with the same.
4. The amplitude limiting nut 3: the nut is provided with a horn-shaped opening, and the inner diameter of the minimum opening is larger than the diameter of the sealing press ring 5, so that the gasket 4 and the sealing press ring 5 can easily pass through the nut; the limiting nut 3 is used for limiting the swing amplitude of the chromatographic column 7 and reducing the probability that the chromatographic column 7 is scraped by the groove 22 of the mandril 2.
5. The utility model discloses an use: column assembling: screwing the connecting body 1 on the interface 6; sequentially sleeving a gasket 4 and a sealing press ring 5 on one end of a chromatographic column 7 connected with the interface 6, measuring the length of the chromatographic column 7 to be inserted into the interface 6, and marking; sleeving the limiting nut 3 into the end of the chromatographic column 7 and crossing the sealing pressure ring 5 and the gasket 4; carefully moving the head end of the chromatographic column 7 together with the sealing press ring 5 and the gasket 4 into the connecting body 1, and continuously pushing the chromatographic column 7 to be inserted into the interface 6; taking the ejector rod 2 to move towards the chromatographic column 7 and enabling the chromatographic column to enter the groove 22 of the ejector rod 2, and then screwing the amplitude limiting nut 3 on the ejector rod 2; one end of the mandril 2 with the lug boss 21 is screwed into the connecting body 1, the gasket 4 and the sealing press ring 5 are pushed into the restraint tube 11 and screwed tightly by hands; the chromatographic column 7 is pushed to a given depth, and finally the mandril 2 is wrenched by a wrench until the sealing is good. Disassembling the column: unscrewing the connecting body 1 anticlockwise for three circles; and the ejector rod 2 is wrenched clockwise by a spanner for two circles, so that the adhesion possibly existing between the sealing press ring 5 and the restraint tube 11 is eliminated. Unscrewing the limiting nut 3, unscrewing the ejector rod 2 and taking down; the chromatographic column 7 is held and slightly pulled out, and the limiting screw cap 3 is taken down. If the sealing press ring 5 is adhered to the interface 6, the connecting body 1 and the sealing press ring 5 can be separated only by screwing out the connecting body and slightly pulling the sealing press ring.
Claims (1)
1. The utility model provides a gas chromatography-mass spectrum interface seals clamping ring closing device, includes hookup body (1), ejector pin (2), amplitude limiting nut (3) and packing ring (4), its characterized in that: two ends of the connecting body (1) are provided with internal threads, one end of the connecting body is connected to the interface (6) and the other end of the connecting body is connected with the ejector rod (2); the middle part of the connecting body (1) is provided with a constraint tube (11), and the inner diameter of the constraint tube (11) is 0.5mm larger than the diameter of the sealing press ring (5); the ejector rod (2) is a screw rod with a wrenching groove (23) and a groove (22) with the width of 0.7mm, one end of the ejector rod with a boss (21) is connected with the connecting body (1), and the other end of the ejector rod is connected with the limiting screw cap (3); the outer diameter of the gasket (4) is the same as the diameter of the sealing press ring (5), the thickness of the gasket is 1mm, a round hole with the diameter of 1mm is arranged in the middle of the gasket, and the gasket is arranged between the boss (21) and the sealing press ring (5) during working; the amplitude limiting nut (3) is provided with a horn-shaped opening in the axial direction, and the inner diameter of the minimum position of the opening is larger than the diameter of the sealing press ring (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920135986.1U CN210119475U (en) | 2019-01-27 | 2019-01-27 | Gas chromatography-mass spectrum interface seal compression ring pressing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920135986.1U CN210119475U (en) | 2019-01-27 | 2019-01-27 | Gas chromatography-mass spectrum interface seal compression ring pressing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210119475U true CN210119475U (en) | 2020-02-28 |
Family
ID=69611359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920135986.1U Expired - Fee Related CN210119475U (en) | 2019-01-27 | 2019-01-27 | Gas chromatography-mass spectrum interface seal compression ring pressing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210119475U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109557217A (en) * | 2019-01-27 | 2019-04-02 | 广西科技大学鹿山学院 | A kind of gas-chromatography --- mass spectrometer interface seal joint pressing device |
-
2019
- 2019-01-27 CN CN201920135986.1U patent/CN210119475U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109557217A (en) * | 2019-01-27 | 2019-04-02 | 广西科技大学鹿山学院 | A kind of gas-chromatography --- mass spectrometer interface seal joint pressing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200228 Termination date: 20220127 |
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| CF01 | Termination of patent right due to non-payment of annual fee |