CN216936089U - Interchangeable sampling kit - Google Patents
Interchangeable sampling kit Download PDFInfo
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- CN216936089U CN216936089U CN202220257298.4U CN202220257298U CN216936089U CN 216936089 U CN216936089 U CN 216936089U CN 202220257298 U CN202220257298 U CN 202220257298U CN 216936089 U CN216936089 U CN 216936089U
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- gun head
- sample
- sample injection
- sample introduction
- pipe fitting
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Abstract
The utility model discloses an interchangeable sample injection kit, which comprises a sample injection gun head base rod and a sample injection gun head connecting pipe fitting, wherein the sample injection gun head base rod is provided with a plurality of sample injection nozzles; the bottom of the sample injection gun head base rod is inwards sunken to form a connector for the sample injection gun head to be connected with a pipe fitting or a sample injection needle to be inserted, a penetrating channel is arranged in the sample injection gun head base rod and is communicated with the connector; the middle part of the sampling gun head connecting pipe fitting is provided with a channel in a penetrating way, the upper part of the sampling gun head connecting pipe fitting is detachably inserted in the interface, the channel is communicated with the penetrating channel, and the outer wall of the lower part of the sampling gun head connecting pipe fitting forms a joint for sleeving a large-volume sampling tube or a sampling gun head. The utility model has the characteristics of simple structure, convenient operation and high compatibility, and can manually switch three modes of the sampling gun head, the sampling needle and the large-volume sampling tube without tools.
Description
Technical Field
The utility model relates to the technical field of experimental instruments, in particular to an interchangeable sample feeding kit.
Background
The existing sample injection kit is characterized in that a plunger head is added on a common sample injection needle, and an inner O-shaped ring and an outer O-shaped ring for preventing liquid leakage are sleeved on the plunger head, so that the problem exists in the mode that the liquid for sample injection is soaked to the outer O-shaped ring when the sample is injected in large volume, and the sealing effect is reduced due to the corrosion of the O-shaped ring; and the gun head mode cannot be compatible, so that inconvenience exists in actual use.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an interchangeable sample introduction kit which has the characteristics of simple structure, convenience in operation and high compatibility, and can manually switch three modes of a sample introduction gun head, a sample introduction needle and a large-volume sample introduction pipe without tools, and even can be matched with needles in other modes so as to realize more functions.
In order to achieve the above purpose, the solution of the utility model is: an interchangeable sample injection kit comprises a sample injection gun head base rod and a sample injection gun head connecting pipe fitting;
the bottom of the sample injection gun head base rod is inwards sunken to form a connector for the sample injection gun head to be connected with a pipe fitting or a sample injection needle to be inserted, a penetrating channel is arranged in the sample injection gun head base rod and is communicated with the connector;
the middle part of the sampling gun head connecting pipe fitting is provided with a channel in a penetrating way, the upper part of the sampling gun head connecting pipe fitting is detachably inserted in the interface, the channel is communicated with the penetrating channel, and the outer wall of the lower part of the sampling gun head connecting pipe fitting forms a joint for sleeving a large-volume sampling tube or a sampling gun head.
Furthermore, the outer wall of the lower part of the sample injection gun head connecting pipe fitting protrudes outwards to form a joint, and the diameter of the joint is larger than the sample injection gun head interface or the large-volume sample injection port.
Furthermore, a flanging pipeline is arranged in the channel of the sample injection gun head connecting pipe fitting, the upper end of the flanging pipeline is flanged outwards to form a flange, the flange is positioned above the gun head connecting pipe fitting, the lower end of the flanging pipeline is exposed out of the sample injection gun head connecting pipe fitting and is used for sealing the sample injection gun head interface or the large-volume sample injection port, and a sample injection channel is arranged in the flanging pipeline.
Furthermore, the top end of the sample injection gun head connecting pipe fitting is provided with threads, internal threads matched with the threads are formed in the connector, and the threads are matched with the internal threads to compress the flange to form sealing.
Furthermore, a plug is arranged at the top end of the sample injection needle, and after the sample injection gun head connecting pipe fitting is detached from the interface at the bottom of the sample injection gun head base rod, the plug is inserted in the interface in a sealing manner.
Further, the plug is provided with threads with the same specification as the top end of the sampling gun head connecting pipe fitting, and the plug and the interface are matched through threads to form sealing.
Furthermore, a sample injection gun head interface is arranged at the top end of the sample injection gun head and is hermetically sealed on a joint at the bottom end of the sample injection gun head connecting pipe fitting.
Furthermore, the top end of the large-volume sample inlet pipe is provided with a large-volume sample inlet, and the large-volume sample inlet is hermetically sleeved on a joint at the bottom end of the sample injection gun head connecting pipe fitting.
Furthermore, a plunger is inserted into the top of the base rod of the sampling gun head, a through hole is formed in the plunger, and the through hole is communicated with the interface through the through channel.
After the scheme is adopted, the gain effect of the utility model is as follows:
compared with the traditional sample injection needle, the utility model has substantial difference, the traditional integrated sample injection needle is difficult to carry other needle heads, and the utility model uses the section sample injection needle, particularly designs the base rod of the sample injection gun head and the connecting pipe fitting of the sample injection gun head, the outer wall of the lower part of the connecting pipe fitting of the sample injection gun head protrudes outwards to form a joint, the inner wall and the outer wall of the joint are smooth, and the cleaning is easier; the utility model can carry different needle heads, can be compatible with a sample injection gun head, a sample injection needle and a large-volume sample injection tube, realizes a one-needle three-mode and can greatly save the cost. No matter which mode the utility model adopts, the O-shaped ring is not arranged, the condition of aging and corrosion of the O-shaped ring is avoided, and the maintenance cost is not needed.
Drawings
FIG. 1 is an exploded view of the present invention;
FIG. 2 is an enlarged schematic view at A in FIG. 1;
FIG. 3 is an enlarged schematic view at B of FIG. 1;
FIG. 4 is a schematic structural diagram of a sample injection needle according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of another sample injection needle according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a sample injection lance head according to an embodiment of the utility model;
FIG. 7 is a schematic structural diagram of a large-volume sampling tube according to an embodiment of the present invention;
FIG. 8 is a schematic structural diagram of a connection sample injection lance head according to the present invention;
FIG. 9 is an enlarged schematic view at A of FIG. 8;
FIG. 10 is a schematic view of the present invention showing the structure of the connection of a large volume sample introduction tube;
FIG. 11 is an enlarged schematic view at A of FIG. 10;
FIG. 12 is a schematic view of the structure of the connection needle of the present invention.
Description of reference numerals: a sample injection gun head base rod 1; an interface 11; a through channel 12; a plunger 13; a through hole 131; the sampling gun head is connected with the pipe fitting 2; a channel 21; a flanged pipe 211; a joint 22; a sample injection gun head 3; a sample injection gun head interface 31; a large volume sample inlet tube 4; a bulk sample inlet 41; a sample injection needle 5; a plug 51.
Detailed Description
The utility model is described in detail below with reference to the accompanying drawings and specific embodiments.
The utility model provides an interchangeable sample introduction kit, which comprises a sample introduction gun head base rod 1, a plunger 13, a sample introduction gun head connecting pipe fitting 2, a flanging pipeline 211, a sample introduction gun head 3, a large-volume sample introduction pipe 4 and a sample introduction needle 5.
As shown in fig. 1, the bottom of the sample injection lance head base rod 1 is recessed inwards to form an interface 11 for the sample injection lance head to connect with the pipe fitting 2 or the sample injection needle 5, a through channel 12 is arranged in the sample injection lance head base rod 1, a plunger 13 is inserted into the top of the sample injection lance head base rod 1, the plunger 13 is provided with a through hole 131, and the through channel 12 communicates the through hole 131 with the interface 11;
a channel 21 penetrates through the middle of the sampling gun head connecting pipe fitting 2, the upper part of the sampling gun head connecting pipe fitting 2 is detachably inserted into the interface 11, the channel 21 is communicated with the through channel 12, the outer wall of the lower part of the sampling gun head connecting pipe fitting 2 protrudes outwards to form a connector 22 for sleeving a large-volume sampling pipe 4 or a sampling gun head 3, and the diameter of the connector 22 is larger than the sampling gun head interface 31 or the large-volume sampling port 41.
Specifically, a flanging pipeline 211 is arranged in a channel 21 of the sampling gun head connecting pipe fitting 2, the flanging pipeline 211 is long, the sampling channel 21 is arranged inside the flanging pipeline 211, the upper end of the flanging pipeline 211 is flanged outwards to form a flange, the flange is located above the sampling gun head connecting pipe fitting 2, and the lower end of the flanging pipeline 211 is exposed out of the sampling gun head connecting pipe fitting 2 and is used for sealing the sampling gun head interface 31 or the large-volume sampling port 41.
As shown in fig. 1, the top end of the sample injection gun head connecting pipe fitting 2 is provided with threads, internal threads matched with the threads are formed in the port 11, and the flange is compressed through the matching of the threads and the internal threads to form sealing.
Referring to fig. 4, a plug 51 is arranged at the top end of the sample injection needle 5, the plug 51 is provided with threads having the same specification as the top end of the sample injection gun head connecting pipe 2, and after the sample injection gun head connecting pipe 2 is detached from the interface 11 at the bottom of the sample injection gun head base rod 1, the plug 51 and the interface 11 are hermetically inserted into the interface 11 through thread matching. As shown in fig. 4 and 5, the sampling needle 5 and the plug 51 can be integrally formed or separately formed, wherein the separate forming is more cost-effective.
Referring to fig. 6, a sample injection lance head interface 31 is arranged at the top end of the sample injection lance head 3, and the sample injection lance head interface 31 is hermetically sleeved on the joint 22 at the bottom end of the sample injection lance head connecting pipe fitting 2.
Referring to fig. 7, a large volume sample inlet 41 is formed at the top end of the large volume sample inlet tube 4, and the large volume sample inlet 41 is hermetically sealed and connected to the joint 22 at the bottom end of the sample gun head connecting tube 2.
The first application mode of the utility model is as follows: a sample injection gun head 3 mode; the sample injection gun head is composed of a sample injection gun head base rod 1, a flanging pipeline 211, a sample injection gun head connecting pipe fitting 2 and a sample injection gun head 3, as shown in figure 8, the upper end of the sample injection gun head connecting pipe fitting 2 is fixed on the sample injection gun head base rod 1 through a screw tooth, the flanging pipeline 211 is tightly pressed and fixed on the sample injection gun head base rod 1 through the screw tooth under the condition of the mode, so that the sample injection gun head base rod 1, the flanging pipeline 211 and the sample injection gun head connecting pipe fitting 2 form sealing, only the sample injection gun head base rod 1 is communicated with a sample injection channel 21 of the flanging pipeline 211, a connector 22 at the lower end of the sample injection gun head connecting pipe fitting 2 is inserted into a sample injection gun head connector 31 and forms sealing with the inner wall of the sample injection gun head 3, as shown in figure 9; when extracting the sample, the inside negative pressure that forms of sample feeding rifle head 3 has realized like this that sample feeding rifle head 3 absorbs the effect of advancing a kind, and this mode can stretch into small volume container, like the test tube.
The second application mode of the utility model: a large volume sample introduction mode; the sample injection gun head is composed of a sample injection gun head base rod 1, a flanging pipeline 211, a sample injection gun head connecting pipe fitting 2 and a large-volume sample injection pipe 4, as shown in figure 10, the upper end of the sample injection gun head connecting pipe fitting 2 is fixed on the sample injection gun head base rod 1 through threads, the threads tightly press and fix the flanging pipeline 211 on the sample injection gun head base rod 1 under the mode, so that the sample injection gun head base rod 1, the flanging pipeline 211 and the sample injection gun head connecting pipe fitting 2 form sealing, only the sample injection gun head base rod 1 is communicated with a sample injection channel 21 of the flanging pipeline 211, a connector 22 at the lower end of the sample injection gun head connecting pipe fitting 2 is inserted into the large-volume sample injection port 41 and forms sealing with the inner wall of the large-volume sample injection pipe 4, and at the moment, the flanging pipeline 211 exposed at the lower end of the sample injection gun head connecting pipe fitting 2 is inserted at a central hole recess of the large-volume sample injection port 41, as shown in figure 11; when a sample is extracted, negative pressure is formed inside the large-volume sample injection tube 4, a solvent enters the notch of the large-volume sample injection port 41 through a pipeline and enters the sample injection gun head connecting pipe fitting 2 through the flanging pipeline 211 to reach the corresponding position of the system, so that large-volume sample injection is realized, and the mode is suitable for connecting large-volume containers.
The utility model has the third application mode: a sample injection needle 5 mode, which consists of a sample injection gun head base rod 1 and a sample injection needle 5, as shown in fig. 12, in the mode, only the sample injection gun head connecting pipe fitting 2 needs to be detached from the sample injection gun head base rod 1, the sample injection needle 5 is inserted into a connector 11, and the sample injection needle 5 is fixed on the sample injection gun head base rod 1 through a thread on a plug 51, so that the sample injection needle 5 is communicated with a through channel 12 of the sample injection gun head base rod 1; when extracting the sample, the solvent can enter the through channel 12 of the base rod 1 of the sampling gun head through the sampling needle 5 to reach the corresponding position, so that the sampling of the sampling needle 5 is realized, and the mode can extend into a small-volume container, such as a test tube.
In conclusion, the utility model uses the section sample injection needle 5 to carry different needle heads, and the application switching does not need tools, only needs manual switching, and is convenient to operate; a one-needle three-mode is realized, the sample injection gun head 3, the sample injection needle 5 and the large-volume sample injection tube 4 can be compatible, and the cost can be greatly saved; compared with the traditional sample injection needle 5, the outer wall of the lower part of the sample injection gun head connecting pipe fitting 2 protrudes outwards to form a joint 22, and the inner wall and the outer wall of the joint 22 are smooth and easy to clean. No matter which mode the utility model adopts, the O-shaped ring is not arranged, the condition of aging and corrosion of the O-shaped ring is avoided, and the maintenance cost is not needed.
The utility model can also connect a column inserted bar at the lower end of the sample injection gun head base rod 1, thus finishing the column inserting bar to pass the SPE column.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the design of the present invention, and all equivalent changes made in the design key point of the present invention fall within the protection scope of the present invention.
Claims (9)
1. An interchangeable sample injection kit is characterized by comprising a sample injection gun head base rod and a sample injection gun head connecting pipe fitting;
the bottom of the sample injection gun head base rod is inwards sunken to form a connector for the sample injection gun head to be connected with a pipe fitting or a sample injection needle to be inserted, a penetrating channel is arranged in the sample injection gun head base rod and is communicated with the connector;
the middle part of the sampling gun head connecting pipe fitting is provided with a channel in a penetrating way, the upper part of the sampling gun head connecting pipe fitting is detachably inserted in the interface, the channel is communicated with the penetrating channel, and the outer wall of the lower part of the sampling gun head connecting pipe fitting forms a joint for sleeving a large-volume sampling tube or a sampling gun head.
2. The interchangeable sample kit according to claim 1, wherein the outer wall of the lower part of the connection tube of the sample lance head protrudes outwards to form a joint, and the diameter of the joint is larger than the port of the sample lance head or the sample inlet of the large volume sample tube.
3. The interchangeable sample introduction kit according to claim 2, wherein a flanged pipeline is disposed inside the channel of the sample introduction gun head connection pipe, an upper end of the flanged pipeline is flanged outward to form a flange, the flange is located above the gun head connection pipe, a lower end of the flanged pipeline is exposed out of the sample introduction gun head connection pipe to seal a port of the sample introduction gun head or a sample introduction port of the large-volume sample introduction pipe, and a sample introduction channel is disposed inside the flanged pipeline.
4. The interchangeable sample introduction kit according to claim 3, wherein the top end of the sample introduction gun head connection pipe is provided with a screw thread, an internal thread matching with the screw thread is formed in the interface, and a seal is formed by matching the screw thread and the internal thread and pressing the flange.
5. The interchangeable sample introduction kit according to claim 1, wherein a plug is disposed at a top end of the sample introduction needle, and the plug is sealingly plugged into the interface after the sample introduction tip connection pipe is detached from the interface at the bottom of the sample introduction tip base rod.
6. The interchangeable sample introduction kit according to claim 5, wherein the plug is provided with threads having the same size as the top end of the connecting pipe of the sample introduction gun head, and the plug and the port form a seal by screw-thread fit.
7. The interchangeable sample introduction kit according to claim 1, wherein a sample introduction tip port is provided at a top end of the sample introduction tip, and the sample introduction tip port is sealed and coupled to a connector at a bottom end of the sample introduction tip connection pipe fitting.
8. The interchangeable sample kit as claimed in claim 1, wherein the top end of the high volume sample inlet tube is provided with a high volume sample inlet, and the high volume sample inlet is sealingly sleeved on a connector at the bottom end of the connection tube of the sample injection gun head.
9. The interchangeable sample introduction kit according to claim 1, wherein a plunger is inserted into a top portion of the base rod of the sample introduction gun head, the plunger defines a through hole, and the through hole communicates with the port through the through channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220257298.4U CN216936089U (en) | 2022-02-08 | 2022-02-08 | Interchangeable sampling kit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220257298.4U CN216936089U (en) | 2022-02-08 | 2022-02-08 | Interchangeable sampling kit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216936089U true CN216936089U (en) | 2022-07-12 |
Family
ID=82318647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220257298.4U Active CN216936089U (en) | 2022-02-08 | 2022-02-08 | Interchangeable sampling kit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216936089U (en) |
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2022
- 2022-02-08 CN CN202220257298.4U patent/CN216936089U/en active Active
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