CN213708200U - Connector for connecting syringe with pipette head - Google Patents
Connector for connecting syringe with pipette head Download PDFInfo
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- CN213708200U CN213708200U CN202021719356.8U CN202021719356U CN213708200U CN 213708200 U CN213708200 U CN 213708200U CN 202021719356 U CN202021719356 U CN 202021719356U CN 213708200 U CN213708200 U CN 213708200U
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- syringe
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Abstract
The utility model provides an interface for liquid-transfering gun head is connected to syringe, including connecting the body, connect the body to be the circular truncated cone form, be equipped with linking channel on connecting the body axis, linking channel is the circular truncated cone form, and linking channel and joint body are with the axle center, connect the big round end of body and be equipped with first connecting device for with linking channel and syringe intercommunication, connect body small circle end and be equipped with second connecting device, be used for with linking channel and liquid-transfering gun head connection. The utility model discloses a first connecting device communicates interface channel and syringe, is connected interface channel and pipette head through the second connecting device, has improved the seal that syringe and pipette head are connected, has solved syringe and pipette head junction gas leakage, and when using the syringe pressurization, pressure is not enough, and the problem of pipette head can't be crossed to liquid.
Description
Technical Field
The utility model belongs to the technical field of medical instrument, especially, relate to an interface for liquid-transfering gun head is connected to syringe.
Background
In proteomics, before mass spectrometric detection of polypeptides, desalting of polypeptides is usually required.
At present, desalting columns with various specifications are available in the market, generally, trace polypeptide desalting can be performed in a self-made C18 gun head, the cost is low, and the use is convenient. However, some peptide fragments requiring desalting may have some impurities to block the C18 membrane, so the injector is required to apply external force for pressurization.
The existing injector can not be well combined with a gun head in a sealing way, and the phenomenon of air leakage can occur, so that a connector needs to be designed to combine the head of the injector with the gun head in a sealing way, so that the injector can be conveniently pressurized, and liquid can flow through the gun head of C18.
SUMMERY OF THE UTILITY MODEL
The to-be-solved problem of the utility model is to provide a connect, especially simple structure, convenient operation is applicable to being connected between syringe and the liquid-transfering gun head specially, and the gas tightness is good, labour saving and time saving, multiple specification, wide interface for liquid-transfering gun head is connected to a syringe of range of application.
In order to solve the technical problem, the utility model discloses a technical scheme is: the connector comprises a connector body, wherein the connector body is in a cone frustum shape, a connecting channel is arranged on the central axis of the connector body and is in a cone frustum shape, the connecting channel and the connector body are coaxial, a first connecting device is arranged at the large circular end of the connector body and used for communicating the connecting channel with the syringe, and a second connecting device is arranged at the small circular end of the connector body and used for connecting the connecting channel with the pipette head.
Further, the first connecting device is in threaded connection, an external thread is arranged on the outer cylindrical surface of the syringe needle seat, an internal thread is arranged on the inner surface of the end part of the large circular surface of the connector body, and the external thread is matched with the internal thread.
Furthermore, the inner surface of the end part of the big circular surface of the joint body is provided with an annular rubber ring, and the internal thread is arranged on the inner surface of the rubber ring.
Furthermore, the second connecting device is in plug-in connection, and the end part of the small circular surface of the connector body is inserted into the inside of the large circular surface of the pipette head.
Furthermore, the outer surface of the end part of the small circular surface of the joint body is step-shaped, so that the joint body is suitable for pipette tips with different diameters.
Furthermore, sealing rings are arranged on all steps of the small circular surface end part of the joint body.
Furthermore, an annular boss is arranged in the middle of the sealing ring, an annular groove is formed in the inner surface of the large circular surface of the pipette head, and the annular boss is matched with the annular groove.
Furthermore, a first fastening ring is arranged at the first connecting device, and a second fastening ring is arranged at the second connecting device.
Furthermore, the first fastening ring comprises a fastening plate, a fastening screw and a fastening nut, the fastening plate is bent to be annular, two ends of the fastening plate are respectively provided with a connecting lug, the center of the connecting lug is provided with a connecting hole, the fastening screw is arranged in the connecting hole, and the end of the fastening screw is connected with the fastening nut.
Further, the second fastening ring structure is identical to the first fastening ring structure.
The utility model has the advantages and positive effects that:
1. the utility model discloses a first connecting device communicates interface channel and syringe, is connected interface channel and pipette head through the second connecting device, has improved the seal that syringe and pipette head are connected, has solved syringe and pipette head junction gas leakage, and when using the syringe pressurization, pressure is not enough, and the problem of pipette head can't be crossed to liquid.
2. The utility model discloses set up the second connecting device end into the step form, can be according to the in-service use demand, will connect the body and be connected with the liquid-transfering gun head of multiple diameter specification, satisfy the multiple use demand, avoid being equipped with the joint body of multiple bore simultaneously, practiced thrift manufacturing cost, simultaneously, the range of application is wide, and the practicality is strong.
3. The utility model discloses a threaded connection realizes being connected of syringe and joint body, and the two junction is equipped with the rubber circle, realizes that the syringe is sealed with the fastening that connects the body, and the two junction carries out the secondary fastening through first tighrening ring, and is sealed effectual. The joint of the pipette head and the joint body is sealed through the sealing ring, the sealing ring is provided with the annular boss, the annular boss is matched with the annular groove of the pipette head, the pipette head and the joint body are fastened and sealed, the joint of the pipette head and the joint body is fastened secondarily through the second fastening ring, the sealing effect is good, and the pressurizing pressure is sufficient.
Drawings
Fig. 1 is a schematic view of an assembly structure of an embodiment of the present invention and an injector and a pipette tip.
Fig. 2 is a schematic diagram of the overall structure of the embodiment of the present invention.
Fig. 3 is an exploded schematic view of an embodiment of the present invention and an injector and pipette tip.
Fig. 4 is a schematic view of a first fastening ring structure according to an embodiment of the present invention.
In the figure:
1. syringe 2, first connecting device 3, joint body
4. Second connecting device 5, pipette tip 6, connecting channel
7. External thread 8, internal thread 9, first fastening ring
10. Second fastening ring 11, connecting lug 12 and fastening plate
13. Nut 14, fastening screw 15, connecting hole
16. Annular boss 17, step face.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. 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.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The embodiments of the present invention will be further described with reference to the accompanying drawings:
as shown in fig. 1 and 2, the interface for connecting a syringe to a pipette tip according to this embodiment includes a connector body 3, the connector body 3 is in a truncated cone shape, a connection channel 6 is disposed on a central axis of the connector body 3, the connection channel 6 is in a truncated cone shape, and the connection channel 6 is coaxial with the connector body 3. The large circular end of the joint body 3 is provided with a first connecting device 2 for communicating the connecting channel 6 with the injector 1, and the small circular end of the joint body 3 is provided with a second connecting device 4 for connecting the connecting channel 6 with the pipette tip 5.
This embodiment is connected connecting channel 6 and syringe 1 intercommunication through first connecting device 2, is connected connecting channel 6 and pipette head 5 through second connecting device 4, has improved the leakproofness that syringe 1 and pipette head 5 are connected, has solved syringe 1 and pipette head 5 junction gas leakage, and when using syringe 1 pressurization, the pressure is not enough, and the problem of pipette head 5 can't be flowed through to liquid.
The first connecting device 2 is a device for connecting and fastening the connecting channel 6 and the syringe 1, and the first connecting device 2 can be of various structures as long as the above functions are realized. Specifically, as shown in fig. 3, the first connecting device 2 provided in this embodiment is a threaded connection, an external thread 7 is provided on the outer cylindrical surface of the needle seat of the syringe 1, an internal thread 8 is provided on the inner surface of the large-circular-surface end of the connector body 3, and the external thread 7 is engaged with the internal thread 8.
Preferably, the inner surface of the large-circular-surface end part of the joint body 3 is provided with an annular rubber ring, and the internal thread 8 is arranged on the inner surface of the rubber ring. This embodiment passes through threaded connection, realizes being connected of syringe 1 and joint body 3, and the two junction is equipped with the rubber circle, realizes that the fastening of syringe 1 and joint body 3 is sealed. Preferably, the first fastening ring 9 is arranged at the first connecting device 2, and the joint of the first fastening ring and the first fastening ring 9 is fastened for the second time, so that the sealing effect is good.
The first fastening ring 9 is a device for secondarily fastening the needle holder of the syringe 1 and the joint body 3, and the first fastening ring 9 may have various structures as long as the above-described functions are realized. Specifically, as shown in fig. 4, the first fastening ring 9 provided in this embodiment includes a fastening plate 12, a fastening screw 14, and a fastening nut 13, where the fastening plate 12 is bent into a ring shape, two end portions of the fastening plate 12 are respectively provided with a connecting lug 11, a central portion of the connecting lug 11 is provided with a connecting hole 15, the fastening screw 14 is disposed in the connecting hole 15, and an end portion of the fastening screw 14 is connected to the fastening nut 13. By turning the position of the nut 13, the diameter of the fastening plate 12 is adjusted, thereby fastening the needle holder of the syringe 1 and the joint body 3 together by an external force.
The second connecting device 4 is a device for communicating the connecting channel 6 and the pipette tip 5 to connect and fasten the two, and the second connecting device 4 can be in various structures as long as the above functions are realized. Specifically, as shown in fig. 4, the second connecting device 4 provided in this embodiment is a plug connection, and the end of the small circular surface of the connector body 3 is inserted into the inside of the large circular surface of the pipette tip 5.
Preferably, the outer surface of the end part of the small circular surface of the joint body 3 is step-shaped, so that the pipette tips 5 with different diameters and sizes are suitable, and sealing rings are arranged on all steps of the end part of the small circular surface of the joint body 3, so that the fastening force between the joint body 3 and the pipette tips 5 is increased. This embodiment sets up 4 ends of second connecting device into the step form, can be according to the in-service use demand, will connect body 3 and be connected with the liquid-transfering gun head 5 of multiple diameter specification, satisfies the multiple use demand, avoids being equipped with the joint body 3 of multiple bore simultaneously, has practiced thrift manufacturing cost, and simultaneously, the range of application is wide, and the practicality is strong.
Preferably, as shown in fig. 3, an annular boss 16 is provided at the middle of the sealing ring, an annular groove is provided on the inner surface of the large circular surface of the pipette tip 5, and the annular boss 16 is engaged with the annular groove. The pipette head 5 and the joint body 3 junction of this embodiment are sealed through the sealing washer, and are equipped with cyclic annular boss 16 on the sealing washer, and cyclic annular boss 16 cooperates with the annular groove of pipette head 5, realizes that pipette head 5 and the fastening that connects body 3 are sealed. Preferably, the joint of the two is fastened for the second time through the second fastening ring 10, the sealing effect is good, the pressurizing pressure is sufficient, and specifically, the structure of the second fastening ring 10 of the embodiment is the same as that of the first fastening ring 9.
The utility model discloses a theory of operation is:
the needle base of the injector 1 is connected with the large round end of the connector body 3 through threads, the fastening plate 12 is sleeved on the outer surface of the large round end of the connector body 3, the connecting holes 15 of the connecting lugs 11 at the two ends of the fastening plate 12 are aligned, the fastening screw 14 penetrates into the connecting holes 15, and the end part of the fastening screw 14 is connected with the fastening nut 13. By turning the position of the nut 13, the diameter of the fastening plate 12 is adjusted, thereby fastening the needle holder of the syringe 1 and the joint body 3 together by an external force.
The small circular end of the connector body 3 is inserted into the end part of the pipette tip 5, the pipette tip 5 is fixed on the corresponding step surface 17 according to the size of the pipette tip 5, the annular boss 16 is clamped into the annular groove, and the annular groove is fixed through the second fastening ring 10.
The utility model has the advantages and positive effects that:
1. the utility model discloses a first connecting device communicates interface channel and syringe, is connected interface channel and pipette head through the second connecting device, has improved the seal that syringe and pipette head are connected, has solved syringe and pipette head junction gas leakage, and when using the syringe pressurization, pressure is not enough, and the problem of pipette head can't be crossed to liquid.
2. The utility model discloses set up the second connecting device end into the step form, can be according to the in-service use demand, will connect the body and be connected with the liquid-transfering gun head of multiple diameter specification, satisfy the multiple use demand, avoid being equipped with the joint body of multiple bore simultaneously, practiced thrift manufacturing cost, simultaneously, the range of application is wide, and the practicality is strong.
3. The utility model discloses a threaded connection realizes being connected of syringe and joint body, and the two junction is equipped with the rubber circle, realizes that the syringe is sealed with the fastening that connects the body, and the two junction carries out the secondary fastening through first tighrening ring, and is sealed effectual. The joint of the pipette head and the joint body is sealed through the sealing ring, the sealing ring is provided with the annular boss, the annular boss is matched with the annular groove of the pipette head, the pipette head and the joint body are fastened and sealed, the joint of the pipette head and the joint body is fastened secondarily through the second fastening ring, the sealing effect is good, and the pressurizing pressure is sufficient.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention, and should not be considered as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.
Claims (10)
1. The utility model provides an interface for liquid-transfering gun head is connected to syringe which characterized in that: the connector comprises a connector body, wherein the connector body is in a cone frustum shape, a connecting channel is arranged on the central axis of the connector body and is in a cone frustum shape, the connecting channel and the connector body are coaxial, a first connecting device is arranged at the large circular end of the connector body and used for communicating the connecting channel with an injector, and a second connecting device is arranged at the small circular end of the connector body and used for connecting the connecting channel with a pipette head.
2. An interface for a syringe to connect to a pipette tip according to claim 1, wherein: the first connecting device is in threaded connection, an external thread is arranged on the outer cylindrical surface of the syringe needle seat, an internal thread is arranged on the inner surface of the end part of the large circular surface of the connector body, and the external thread is matched with the internal thread.
3. An interface for a syringe to connect to a pipette tip according to claim 2, wherein: the inner surface of the end part of the big circular surface of the joint body is provided with an annular rubber ring, and the internal thread is arranged on the inner surface of the rubber ring.
4. An interface according to any one of claims 1 to 3 for a syringe to be connected to a pipette tip, wherein: the second connecting device is in plug-in connection, and the end part of the small circular surface of the connector body is inserted into the inside of the large circular surface of the pipette head.
5. An interface for a syringe to connect to a pipette tip according to claim 4, wherein: the outer surface of the end part of the small circular surface of the joint body is step-shaped, so that the joint is suitable for pipette tips with different diameters.
6. An interface for a syringe to connect to a pipette tip according to claim 5, wherein: and sealing rings are arranged on all stages of the small round surface end part of the joint body.
7. An interface for a syringe to connect to a pipette tip according to claim 6, wherein: the middle part of the sealing ring is provided with an annular boss, the inner surface of the large circular surface of the pipette tip is provided with an annular groove, and the annular boss is matched with the annular groove.
8. An interface for a syringe to connect to a pipette tip according to any one of claims 1 to 3 or 5 to 7, wherein: the first connecting device is provided with a first fastening ring, and the second connecting device is provided with a second fastening ring.
9. An interface for a syringe to connect to a pipette tip according to claim 8, wherein: the first fastening ring comprises a fastening plate, fastening screws and fastening nuts, the fastening plate is bent to be annular, connecting lugs are arranged at two ends of the fastening plate respectively, connecting holes are formed in the center of the connecting lugs, the fastening screws are arranged in the connecting holes, and the end portions of the fastening screws are connected with the fastening nuts.
10. An interface for a syringe to connect to a pipette tip according to claim 9, wherein: the second fastener ring structure is identical to the first fastener ring structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021719356.8U CN213708200U (en) | 2020-08-18 | 2020-08-18 | Connector for connecting syringe with pipette head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021719356.8U CN213708200U (en) | 2020-08-18 | 2020-08-18 | Connector for connecting syringe with pipette head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213708200U true CN213708200U (en) | 2021-07-16 |
Family
ID=76791343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021719356.8U Active CN213708200U (en) | 2020-08-18 | 2020-08-18 | Connector for connecting syringe with pipette head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213708200U (en) |
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2020
- 2020-08-18 CN CN202021719356.8U patent/CN213708200U/en active Active
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