CN218011579U - Sample introduction and filtration device of laboratory analysis instrument - Google Patents
Sample introduction and filtration device of laboratory analysis instrument Download PDFInfo
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- CN218011579U CN218011579U CN202222337553.9U CN202222337553U CN218011579U CN 218011579 U CN218011579 U CN 218011579U CN 202222337553 U CN202222337553 U CN 202222337553U CN 218011579 U CN218011579 U CN 218011579U
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- cartridge filter
- filter
- pull board
- cartridge
- chromatograph body
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Abstract
The utility model belongs to the technical field of sample analysis and filtration, in particular to a sample injection and filtration device of a laboratory analysis instrument, which comprises a chromatograph body, wherein the upper end of the chromatograph body is provided with a sample injection needle tube, and one side of the sample injection needle tube is inserted with a filtration mechanism; inserting a sample injection needle tube into the sample injection hole of the first filter cylinder, pushing the sample injection needle tube to enable the internal liquid phase to flow into the first filter cylinder, enabling the liquid to flow out of the middle part of the first drawing plate and enter the second filter cylinder after primary filtration through a coarse screen, enabling the liquid after primary filtration to finish secondary filtration after impurity adsorption of a fine screen, and enabling the liquid to flow into the chromatograph body through the second filter cylinder to finish chromatographic analysis; through the buffering characteristic of spring for compression spring can last to support arc and joint in the outside of second cartridge filter, prevents to advance the appearance needle tubing and cause filtering mechanism's shake when extruding inside liquid, makes this device more stable.
Description
Technical Field
The utility model belongs to the technical field of the sample analysis filters, concretely relates to sample introduction and filtration device of laboratory analytical instrument.
Background
Current laboratory liquid chromatography analytical instrument need use to advance the appearance needle tubing and press analytic liquid to the chromatograph inside in the use, because contain a quantitative impurity in the analytic liquid, and current analytical instrument is not equipped with filter equipment mostly for can lead to impurity to block up to advance the appearance pipeline in the long-term use, cause and advance the appearance failure, influence experimental analysis, serious can pollute the chromatographic column, and then influence the life of chromatograph.
Therefore, the sample introduction filtering device of the laboratory analysis instrument is designed to solve the problems.
SUMMERY OF THE UTILITY MODEL
To solve the problems set forth in the background art described above. The utility model provides a laboratory analytical instrument's advance a kind filter equipment, can insert the appearance porefilling inside of first cartridge filter with the syringe of advancing, promote the syringe of advancing, make inside liquid phase flow advance first cartridge filter, liquid carries out once filtering back through the coarse screen cloth, flow out and enter into the second cartridge filter from the middle part of pull board one, after through once filtered liquid after the impurity adsorption of fine screen cloth, accomplish the secondary filter, and flow out from pull board two, liquid passes the inside of second cartridge filter and inflow chromatograph body, accomplish the chromatographic analysis. And in the filtering mechanism use, the screwed pipe spiro union of first cartridge filter is inside the screw hole of stop collar, can accomplish the fixed with the second cartridge filter, and mention pull board one and pull board two, and change the coarse screen cloth and the fine screen cloth of inside separately, make this device dismouting simple and convenient, on the other hand, the compression spring of centre gripping subassembly can follow the inside compression of support frame, buffer characteristic through the spring, make compression spring can continuously support arc and joint in the outside of second cartridge filter, prevent to advance the appearance needle tubing and cause filtering mechanism's shake when extruding inside liquid, make this device more stable.
In order to achieve the above object, the utility model provides a following technical scheme: a sample injection filtering device of a laboratory analytical instrument comprises a chromatograph body, wherein a sample injection needle tube is arranged at the upper end of the chromatograph body, and a filtering mechanism is inserted into one side of the sample injection needle tube;
the filtering mechanism comprises a first filter cartridge, a second filter cartridge, a limiting sleeve, a threaded pipe and a clamping assembly, the top of the first filter cartridge is connected with a needle hole end of a sample injection needle tube in an inserting mode, one side of the threaded pipe is fixedly connected with the middle of the first filter cartridge, the limiting sleeve is sleeved on the outside of the threaded pipe in a threaded mode through threads, the bottom of the second filter cartridge is connected with a sample injection end of a chromatograph body in an inserting mode, and the surface of the clamping assembly is connected with the outer wall surface of the second filter cartridge in a clamping mode.
As the utility model relates to a laboratory analysis appearance advance kind filter equipment preferred, the middle part activity of first cartridge filter has cup jointed pull board one and coarse screen, and the outer wall of pull board one slides and cup joints inside the middle-end of first cartridge filter, and the inboard of bolt threaded connection at pull board one is passed through to the both sides of coarse screen.
As the utility model relates to a laboratory analysis appearance advance a kind filter equipment preferred, the middle part activity of second cartridge filter has cup jointed pull board two and smart screen cloth, and the outer wall of pull board two slides and cup joints inside the middle-end of second cartridge filter, and bolt threaded connection is passed through in the inboard of pull board two in the both sides of smart screen cloth.
As the utility model relates to a laboratory analytical instrument advances a kind filter equipment preferred, the screw hole with screwed pipe size looks adaptation is seted up to the inside of stop collar.
As the utility model relates to a laboratory analytical instrument advance kind filter equipment preferred, the centre gripping subassembly includes support frame, compression spring and arc, and the bottom of support frame is connected with the fixed surface of chromatograph body, and compression spring sets up in the inside of support frame, and one side middle part of arc is connected with compression spring's fixed surface.
As the utility model relates to a laboratory analysis instrument's advance a kind filter equipment preferred, the outside of first cartridge filter still is provided with the inlet hole with the pinhole looks adaptation of syringe.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses in, can insert the appearance porefilling inside of first cartridge filter with the syringe, promote the syringe for inside liquid phase flows into first cartridge filter, and liquid once filters the back through coarse screen cloth, flows out and enters into the second cartridge filter from the middle part of pull board one, and after the impurity absorption back of fine screen cloth of liquid through once filtering, accomplish the secondary filter, and flow out from pull board two, liquid passes the inside of second cartridge filter and inflow chromatograph body, accomplishes the chromatographic analysis.
2. The utility model discloses in, but the screwed pipe spiro union of first cartridge filter is inside the screw hole of stop collar, can accomplish the fixed with the second cartridge filter, and mention pull board one and pull board two, and change the coarse screen cloth and the fine screen cloth of inside separately, make this device dismouting simple and convenient, on the other hand, the compression spring of centre gripping subassembly can follow the inside compression of support frame, through the buffer characteristic of spring, make compression spring can continuously support arc and joint in the outside of second cartridge filter, prevent to advance the syringe and cause the shake of filter mechanism when extruding inside liquid, make this device more stable.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of the present invention;
fig. 2 is a schematic structural view of the inner parts of a first drawing plate and a second drawing plate of the present invention;
fig. 3 is a schematic structural diagram of the junction between the first filter cartridge and the second filter cartridge in the present invention;
FIG. 4 is a schematic structural view of the clamping assembly of the present invention;
in the figure:
1. a chromatograph body; 2. a sample injection needle tube;
3. a filtering mechanism; 31. a first filter cartridge; 32. a second filter cartridge; 33. a limiting sleeve; 34. a threaded pipe; 35. a clamping assembly; 351. a support frame; 352. a compression spring; 353. an arc-shaped plate; 4. drawing the first plate; 5. coarse screening; 6. a second drawing plate; 7. fine screening; 8. a threaded hole; 9. and (4) sampling holes.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.
As shown in fig. 1:
the utility model provides a laboratory analytical instrument's appearance filter equipment that advances, including chromatograph body 1, chromatograph body 1's upper end is provided with into syringe 2, need use into syringe 2 and press analytic liquid to chromatograph body 1 inside, because contain a certain amount of impurity in the analytic liquid, and current chromatograph body 1 is not equipped with filter equipment mostly, make and to lead to impurity to block up the appearance pipeline of advancing in the long-term use, cause and advance the appearance failure, influence experimental analysis, serious meeting pollutes the chromatographic column, and then influence chromatograph body 1's life, on this basis, filtering mechanism 3 has been added, filtering mechanism 3 can carry out secondary filter and change easy dismounting to analytic liquid.
As shown in fig. 1, 2 and 3:
in an alternative embodiment: the filter mechanism 3 comprises a first filter cartridge 31, a second filter cartridge 32, a limit sleeve 33, a threaded pipe 34 and a clamping assembly 35, the top of the first filter cartridge 31 is connected with the pinhole end of the sampling needle tube 2 in an inserting manner, one side of the threaded pipe 34 is fixedly connected with the middle part of the first filter cartridge 31, the limit sleeve 33 is sleeved on the outside of the threaded pipe 34 in a threaded manner, the bottom of the second filter cartridge 32 is connected with the sampling end of the chromatograph body 1 in an inserting manner, the surface of the clamping assembly 35 is connected with the outer wall surface of the second filter cartridge 32 in a clamping manner, the outside of the first filter cartridge 31 is also provided with a sampling hole 9 matched with the pinhole end of the sampling needle tube 2, and the inside of the limit sleeve 33 is provided with a threaded hole 8 matched with the size of the threaded pipe 34.
In this embodiment: can insert into the inlet hole 9 inside of first cartridge filter 31 with syringe 2, promote syringe 2, make inside liquid phase flow advance first cartridge filter 31, liquid carries out once through coarse screen 5 and filters the back, flow out and enter into second cartridge filter 32 from the middle part of pull board 4, after the impurity of fine screen cloth adsorbs the back through once filterable liquid, accomplish the secondary filter, and flow out from pull board two 6, liquid passes second cartridge filter 32 and flows into the inside of chromatograph body 1, accomplish the chromatographic analysis.
It should be noted that: the interior of the threaded pipe 34 is hollow, so that the inner analysis liquid can smoothly flow into the second filter cylinder 32, and blockage is avoided.
Further, the method comprises the following steps:
as shown in fig. 1, 2 and 4:
in an alternative embodiment: first 4 and coarse screen 5 of pull board have been cup jointed in the middle part activity of first cartridge filter 31, the outer wall of pull board 4 slides and cup joints inside the middle-end of first cartridge filter 31, bolt threaded connection is passed through to coarse screen 5's both sides in the inboard of pull board 4, pull board two 6 and fine screen cloth 7 have been cup jointed in the middle part activity of second cartridge filter 32, the outer wall of pull board two 6 slides and cup joints inside the middle-end of second cartridge filter 32, bolt threaded connection is passed through to fine screen cloth 7's both sides in the inboard of pull board two 6, centre gripping subassembly 35 includes support frame 351, compression spring 352 and arc 353, the bottom of support frame 351 is connected with chromatograph body 1's fixed surface, compression spring 352 sets up the inside at support frame 351, one side middle part of arc 353 is connected with compression spring 352's fixed surface.
In this embodiment: but the screwed pipe 34 spiro union of first cartridge filter 31 is inside the screw hole 8 of stop collar 33, can accomplish the fixed with second cartridge filter 32, and mention first 4 and the pull board two 6 of pull board, and change inside coarse screen 5 and fine screen 7 separately, make this device dismouting simple and convenient, on the other hand, the compression spring 352 of centre gripping subassembly 35 can follow the inside compression of support frame 351, through the buffer characteristic of spring, make compression spring 352 can continuously support arc 353 and the joint is in the outside of second cartridge filter 32, prevent to advance the shake that the appearance needle tubing 2 caused filter mechanism 3 when extruding inside liquid, make this device more stable.
It should be noted that: the compression spring 352 is always compressed inside the support frame 351, so that the compression spring can continuously apply pressure to the arc-shaped plate 353 and abut against the second filter cylinder 32, and the clamping and fixing are completed through the two sets of clamping assemblies 35.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a laboratory analytical instrument's appearance filter equipment that advances, includes chromatograph body (1), the upper end of chromatograph body (1) is provided with advances a kind needle tubing (2), its characterized in that: a filtering mechanism (3) is inserted into one side of the sample injection needle tube (2);
filtering mechanism (3) include first cartridge filter (31), second cartridge filter (32), stop collar (33), screwed pipe (34) and centre gripping subassembly (35), the top of first cartridge filter (31) with the pinhole end of advancing kind needle tubing (2) is pegged graft mutually, one side of screwed pipe (34) with the middle part fixed connection of first cartridge filter (31), stop collar (33) screw thread cup joints the outside of screwed pipe (34), the bottom of second cartridge filter (32) with the appearance end grafting of chromatograph body (1) is fixed, the surface of centre gripping subassembly (35) with the outer wall looks joint of second cartridge filter (32).
2. The sample introduction filter device of the laboratory analysis instrument according to claim 1, wherein: the middle part activity of first cartridge filter (31) has cup jointed pull board (4) and coarse screen cloth (5), the outer wall slip cup joint of pull board (4) is in inside the middle-end of first cartridge filter (31), the both sides of coarse screen cloth (5) are passed through bolt threaded connection and are in the inboard of pull board (4).
3. The sample introduction filter device of the laboratory analysis instrument according to claim 1, wherein: the middle part activity of second cartridge filter (32) has cup jointed pull board two (6) and fine screen cloth (7), the outer wall of pull board two (6) slides and cup joints inside the middle-end of second cartridge filter (32), the both sides of fine screen cloth (7) are passed through bolt threaded connection and are in the inboard of pull board two (6).
4. The sample introduction filter device for laboratory analysis equipment according to claim 1, wherein: the limiting sleeve (33) is internally provided with a threaded hole (8) matched with the threaded pipe (34) in size.
5. The sample introduction filter device of the laboratory analysis instrument according to claim 1, wherein: the clamping assembly (35) comprises a support frame (351), a compression spring (352) and an arc-shaped plate (353), the bottom of the support frame (351) is fixedly connected with the surface of the chromatograph body (1), the compression spring (352) is arranged inside the support frame (351), and the middle of one side of the arc-shaped plate (353) is fixedly connected with the surface of the compression spring (352).
6. The sample introduction filter device of the laboratory analysis instrument according to claim 2, wherein: the outside of first cartridge filter (31) still be provided with advance kind hole (9) of pinhole end looks adaptation of advance kind needle tubing (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222337553.9U CN218011579U (en) | 2022-09-02 | 2022-09-02 | Sample introduction and filtration device of laboratory analysis instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222337553.9U CN218011579U (en) | 2022-09-02 | 2022-09-02 | Sample introduction and filtration device of laboratory analysis instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218011579U true CN218011579U (en) | 2022-12-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222337553.9U Active CN218011579U (en) | 2022-09-02 | 2022-09-02 | Sample introduction and filtration device of laboratory analysis instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218011579U (en) |
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2022
- 2022-09-02 CN CN202222337553.9U patent/CN218011579U/en active Active
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