CN218121493U - Vacuum jacket sampling device - Google Patents
Vacuum jacket sampling device Download PDFInfo
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- CN218121493U CN218121493U CN202221796212.1U CN202221796212U CN218121493U CN 218121493 U CN218121493 U CN 218121493U CN 202221796212 U CN202221796212 U CN 202221796212U CN 218121493 U CN218121493 U CN 218121493U
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- sampling device
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- 238000005070 sampling Methods 0.000 title claims abstract description 56
- 230000001360 synchronised effect Effects 0.000 claims abstract description 41
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000004587 chromatography analysis Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a vacuum jacket sampling device, include: the device comprises a negative pressure synchronous component, a needle type sampler and a drawing component; the negative pressure synchronization component is provided with a synchronization negative pressure cavity and is suitable for being connected with the negative pressure rectification system so as to enable the synchronization negative pressure cavity to synchronize the vacuum degree environment of the negative pressure rectification system; the needle type sampler comprises a sampling needle and a push rod, the needle type sampler is contained in the synchronous negative pressure cavity, and at least part of the sampling needle is arranged outside the synchronous negative pressure cavity; the drawing part extends into the synchronous negative pressure cavity to be connected with the push rod, part of the drawing part is arranged outside the synchronous negative pressure cavity, and the push rod is driven to move through the drawing part; the liquid sampling device can realize liquid sampling in a negative pressure rectification system, and is convenient to use.
Description
Technical Field
The utility model relates to a vacuum jacket sampling device for liquid sample to in the negative pressure rectification system.
Background
At present, three operation systems are used for experimental rectification, namely a normal-pressure rectification system, a pressurized rectification system and a negative-pressure rectification system. In the normal pressure rectification system and the pressurization rectification system, an injector (a needle type sampler) can be directly used for sampling analysis, but in the negative pressure rectification system, the direct use of the injector cannot realize sampling under the negative pressure condition, because the negative pressure of the system is far greater than the negative pressure caused by the sampling of the injector. For example, chinese patent No. CN211652222U discloses an atmospheric distillation sampling device, which can only realize sampling in atmospheric and pressurized distillation systems by using an injector, and has limited operation under negative pressure.
Disclosure of Invention
The utility model aims to solve the technical problem that overcome prior art's defect, provide a vacuum jacket sampling device, it can realize the liquid sample to in the negative pressure rectification system, convenient to use.
In order to solve the technical problem, the technical scheme of the utility model is that: a vacuum jacket sampling device for sampling liquid in a negative pressure rectification system, comprising:
the negative pressure synchronization component is provided with a synchronization negative pressure cavity and is suitable for being connected with the negative pressure rectification system so that the synchronization negative pressure cavity synchronizes the vacuum environment of the negative pressure rectification system;
the needle sampler comprises a sampling needle and a push rod, the needle sampler is contained in the synchronous negative pressure cavity, and at least part of the sampling needle is arranged outside the synchronous negative pressure cavity;
the drawing component extends into the synchronous negative pressure cavity and is connected with the push rod, part of the drawing component is arranged outside the synchronous negative pressure cavity, and the drawing component is drawn to drive the push rod to move.
Further, there is provided a specific structure of a negative pressure synchronizing member, the negative pressure synchronizing member including:
the tube, the both ends of pipe are stoppered respectively and are filled in with stopper and lower stopper, intraductal formation synchronous negative pressure chamber, the sample needle of needle type sampler passes arrange in behind the lower stopper outside the synchronous negative pressure chamber, the part of pull part passes arrange in behind the upper stopper outside the synchronous negative pressure chamber.
Further, in order to guide the drawing direction of the drawing member well, a sliding guide piece is arranged in the tube in a sliding manner along the drawing direction of the drawing member, and the sliding guide piece is connected with the drawing member.
Furthermore, in order to avoid the influence of the sliding guide piece on the vacuum degree environment in the synchronous negative pressure cavity, the sliding guide piece is provided with an overflowing hole.
Further, in order to prevent the upper plug and the lower plug from being separated from the pipe, the upper plug and the lower plug are fastened on the pipe through a fastening assembly.
Further, there is provided a concrete structure of a fastening assembly, including:
and the two fastening plates are respectively arranged outside the upper side surface of the upper plug and outside the lower side surface of the lower plug and are connected through at least one screw and nut component.
Furthermore, in order to support the needle type sampler, the needle type sampler also comprises a needle cylinder, and at least one needle cylinder positioning piece is arranged between the needle cylinder and the inner wall of the tube.
Furthermore, in order to avoid the influence of the syringe positioning sheet on the vacuum degree environment in the synchronous negative pressure cavity, the syringe positioning sheet is provided with a hole.
Further, there is provided a concrete structure of a drawing member, the drawing member including:
a pull rod;
the upper end of the push rod is connected with the connecting cap, and the lower end of the pull rod is connected with the connecting cap.
Furthermore, the drawing component also comprises a drawing cap, the drawing cap is connected with the upper end of the pull rod, and the drawing cap is arranged outside the synchronous negative pressure cavity.
Further, in order to enable the negative pressure synchronization component to be well connected with the negative pressure rectification system, a negative pressure interface is arranged on the negative pressure synchronization component and is connected with a vacuum main valve of the negative pressure rectification system through a connecting pipeline; wherein,
the connecting pipeline comprises a pipeline and a vacuum valve connected in the pipeline.
Further, the negative pressure synchronous component also comprises an emptying valve communicated with the synchronous negative pressure cavity.
After the technical scheme is adopted, through connection, the vacuum environment of the synchronous negative pressure cavity synchronous negative pressure rectification system is enabled, the sampling needle is inserted into a sampling port of the negative pressure rectification system, the sampling needle is inserted into the material tank, the pulling cap is pulled to drive the pull rod to move, the pull rod drives the push rod to move through the connecting cap, a sample in the material tank enters the needle cylinder, the pulling cap is slightly pulled to clean the sampling needle for two to three times in order to ensure the sampling precision, then the sample with the required volume is extracted into the needle cylinder, after the extraction is finished, the sampling needle is pulled out, the vacuum valve is closed, the vent valve is opened, a pipeline connected to the negative pressure interface is taken down, and the taken sample can be taken out for analysis.
Drawings
Fig. 1 is a schematic structural view of the vacuum jacket sampling device of the present invention;
FIG. 2 is a schematic view of the connection between the vacuum jacket sampling device and the negative pressure rectification system of the present invention;
FIG. 3 is a schematic structural view of the slide vane;
FIG. 4 is a schematic view of the syringe positioning plate;
fig. 5 is a top view of fig. 1.
Detailed Description
In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings.
As shown in fig. 1 to 4, in the present embodiment, a vacuum jacket sampling device includes:
the negative pressure synchronization component is provided with a synchronization negative pressure cavity 1 and is suitable for being connected with the negative pressure rectification system 100 so as to enable the synchronization negative pressure cavity 1 to synchronize the vacuum environment of the negative pressure rectification system 100;
the needle type sampler comprises a sampling needle 2 and a push rod 3, the needle type sampler is contained in the synchronous negative pressure cavity 1, and at least part of the sampling needle 2 is arranged outside the synchronous negative pressure cavity 1;
the drawing component extends into the synchronous negative pressure cavity 1 and is connected with the push rod 3, and the part of the drawing component is arranged outside the synchronous negative pressure cavity 1 and drives the push rod 3 to move through the drawing component.
In this embodiment, the needle sampler is embodied as a syringe, and a micro-syringe may be used.
As shown in fig. 1, in the present embodiment, the negative pressure synchronizing member may have the following structure: the method comprises the following steps:
an upper plug 51 and a lower plug 52 are plugged at two ends of a tube 5 and the tube 5 respectively, a synchronous negative pressure cavity 1 is formed in the tube, a sampling needle 2 of the needle type sampler is arranged outside the synchronous negative pressure cavity 1 after penetrating through the lower plug 52, and part of a drawing part is arranged outside the synchronous negative pressure cavity 1 after penetrating through the upper plug 51.
As shown in fig. 1 and 3, in the present embodiment, a sliding guide piece 6 is slidably provided in the tube 5 in the drawing direction of the drawing member, the sliding guide piece 6 is connected to the drawing member, and the sliding guide piece 6 can guide the drawing direction of the drawing member well.
As shown in fig. 1 and 3, in the present embodiment, the sliding guide piece 6 is provided with four overflowing holes 61, and the number of overflowing holes 61 is not limited to this, so that the sliding guide piece 6 can be prevented from affecting the vacuum degree environment in the synchronous negative pressure chamber 1.
As shown in fig. 1 and 4, in this embodiment, in order to support the needle sampler, the needle sampler further comprises a needle cylinder 4, and a needle cylinder positioning piece 7 is arranged between the needle cylinder 4 and the inner wall of the tube 5.
As shown in fig. 1 and 4, in the present embodiment, the syringe positioning plate is provided with four holes 71, and the number of the holes 71 is not limited to this, and is consistent with the overflowing hole 61 of the sliding guide plate 6, so as to avoid affecting the vacuum environment in the synchronous negative pressure chamber 1.
As shown in fig. 1, in order to prevent the upper and lower plugs 51 and 52 from being separated from the pipe, the upper and lower plugs 51 and 52 are fastened to the pipe 5 by a fastening assembly therebetween.
As shown in fig. 1, the fastening assembly may specifically be a structure including:
and two fastening plates 19 respectively arranged outside the upper side surface of the upper plug 51 and the lower side surface of the lower plug 52, wherein the two fastening plates 19 are connected through at least one screw-nut assembly.
In the present embodiment, the screw-nut assembly includes a stud 20 and two nuts 21, the stud 20 passes through the two fastening plates 19, and the upper nut 21 is screwed on the stud 20 outside the fastening plate 19 to abut against the two fastening plates 19, thereby preventing the upper plug 51 and the lower plug 52 from being separated from the pipe 5 during the drawing process.
As shown in fig. 1, in the present embodiment, the drawing member has the following structure including:
a pull rod 8;
the upper end of the push rod 3 is connected with the connecting cap 9, and the lower end of the pull rod 8 is connected with the connecting cap 9.
Specifically, the slide guide piece 6 of the present embodiment may be fitted over the outside of the connection cap 9.
As shown in fig. 1, in this embodiment, the drawing member may further include a drawing cap 10 connected to the upper end of the draw bar 8, and the drawing cap 10 is disposed outside the synchronous negative pressure chamber 1.
As shown in fig. 1 and 2, in the present embodiment, a negative pressure port 11 is provided on the negative pressure synchronizing component, and the negative pressure port 11 is connected to a vacuum main valve 12 of the negative pressure rectification system 100 through a connecting pipeline; wherein,
the connecting line comprises a pipe 13 and a vacuum valve 14 connected in the pipe.
As shown in fig. 1, in the present embodiment, the negative pressure synchronizing section further includes a blow valve 15 communicating with the synchronizing negative pressure chamber 1.
In this embodiment, the negative pressure rectification system 100 is an existing device, and a specific structure of the negative pressure rectification system 100 may be as shown in fig. 2, where the negative pressure rectification system 100 in fig. 2 includes a sampling system and a vacuum valve 14, the sampling system is provided with a sampling port 18, the specific structure of the sampling system may be a rectification pin type spacer sampling device disclosed in CN210375828U, and details of the negative pressure rectification system 100 and the specific structure of the sampling system are not repeated in this embodiment.
In this embodiment, during specific operation, a three-way element 16 is additionally connected between a main vacuum valve 12 of the negative pressure rectification system 100 and an external vacuum pump 18, the other end of the three-way element 16 is connected with a pipeline 13 and is connected in series with a vacuum valve 14 to a negative pressure interface 11 on the negative pressure synchronization component, the vacuum valve 14 is opened, so that the synchronous negative pressure cavity 1 synchronizes the vacuum environment of the negative pressure rectification system, that is, the sampling needle 2 can be inserted into a sampling port 18 of the negative pressure rectification system, the sampling needle 2 is inserted into the material pool, the pulling cap 10 is pulled to drive the pull rod 8 to move, the pull rod 8 drives the push rod 3 to move through the connecting cap 9, so that the sample in the material pool enters the needle cylinder 4, in order to ensure the sampling precision, the pulling cap 10 is slightly pulled to clean the sampling needle 2 two to three times, then the sample with the required volume is extracted into the needle cylinder 4, the sampling needle 2 is pulled out, the vacuum valve 14 is closed, the vent valve 15 is opened, the pipeline 13 connected to the negative pressure interface 11 is taken down, and the extracted sample can be taken out for chromatographic analysis.
The above-mentioned embodiments further explain in detail the technical problems, technical solutions and advantages solved by the present invention, and it should be understood that the above only is a specific embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (11)
1. A vacuum-jacketed sampling device for sampling liquid in a negative pressure rectification system (100), comprising:
the negative pressure synchronization component is provided with a synchronization negative pressure cavity (1), and the negative pressure synchronization component is suitable for being connected with the negative pressure rectification system (100) so that the synchronization negative pressure cavity (1) synchronizes the vacuum degree environment of the negative pressure rectification system (100);
the needle sampler comprises a sampling needle (2) and a push rod (3), the needle sampler is contained in the synchronous negative pressure cavity (1), and at least part of the sampling needle (2) is arranged outside the synchronous negative pressure cavity (1);
the drawing component extends into the synchronous negative pressure cavity (1) and is connected with the push rod (3), the part of the drawing component is arranged outside the synchronous negative pressure cavity (1), and the drawing component drives the push rod (3) to move through drawing.
2. The vacuum jacketed sampling device of claim 1,
the negative pressure synchronizing member includes:
pipe (5), the both ends of pipe (5) are stoppered respectively and are filled in (51) and lower stopper (52), intraductal formation synchronous negative pressure chamber (1), sample needle (2) of needle type sampler pass arrange in behind lower stopper (52) outside synchronous negative pressure chamber (1), the part of pull part passes arrange in behind last stopper (51) outside synchronous negative pressure chamber (1).
3. The vacuum jacketed sampling device of claim 2,
the pipe (5) is internally provided with a sliding guide sheet (6) along the drawing direction of the drawing part in a sliding manner, and the sliding guide sheet (6) is connected with the drawing part.
4. The vacuum jacketed sampling device of claim 3,
and the sliding guide piece (6) is provided with an overflowing hole (61).
5. The vacuum jacketed sampling device of claim 2,
the upper plug (51) and the lower plug (52) are fastened on the pipe (5) through a fastening assembly.
6. The vacuum jacketed sampling device of claim 5,
the fastening assembly includes:
and the two fastening plates (19) are respectively arranged outside the upper side surface of the upper plug (51) and outside the lower side surface of the lower plug (52), and the two fastening plates (19) are connected through at least one screw-nut assembly.
7. The vacuum jacketed sampling device of claim 2,
the needle type sampler further comprises a needle cylinder (4), at least one needle cylinder positioning sheet (7) is arranged between the needle cylinder (4) and the inner wall of the tube (5), and a hole (71) is formed in the needle cylinder positioning sheet.
8. The vacuum jacketed sampling device of claim 1,
the drawing member includes:
a pull rod (8);
the upper end of the push rod (3) is connected with the connecting cap (9), and the lower end of the pull rod (8) is connected with the connecting cap (9).
9. The vacuum jacketed sampling device of claim 8,
the drawing component further comprises a drawing cap (10), the drawing cap is connected with the upper end of the pull rod (8), and the drawing cap (10) is arranged outside the synchronous negative pressure cavity (1).
10. The vacuum jacketed sampling device of claim 1,
the negative pressure synchronous component is provided with a negative pressure interface (11), and the negative pressure interface (11) is connected with a vacuum main valve (12) of the negative pressure rectification system (100) through a connecting pipeline; wherein,
the connecting line comprises a pipe (13) and a vacuum valve (14) connected in the pipe (13).
11. The vacuum jacketed sampling device of claim 1,
the negative pressure synchronous component also comprises an emptying valve (15) communicated with the synchronous negative pressure cavity (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221796212.1U CN218121493U (en) | 2022-07-11 | 2022-07-11 | Vacuum jacket sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221796212.1U CN218121493U (en) | 2022-07-11 | 2022-07-11 | Vacuum jacket sampling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218121493U true CN218121493U (en) | 2022-12-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221796212.1U Active CN218121493U (en) | 2022-07-11 | 2022-07-11 | Vacuum jacket sampling device |
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| Country | Link |
|---|---|
| CN (1) | CN218121493U (en) |
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2022
- 2022-07-11 CN CN202221796212.1U patent/CN218121493U/en active Active
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