Movable protection column sealing structure

Abstract

The utility model provides a movable protection column sealing structure, which relates to the technical field of filters, and comprises a connecting piece and a diversion trench arranged on the side surface of the connecting piece, a quick connection assembly is arranged on the side surface of the connecting piece, the quick connection assembly comprises a column core shell arranged on one side of the connecting piece, and a sealing piece is arranged on one side of the column core shell close to the connecting piece. A clamping groove is formed in the side face of the sealing piece, a groove is formed in the end, close to the connecting piece, of the column core shell, by arranging the connecting piece, the sample injector and the analysis column can be connected, flow guiding can be conducted on a sample through cooperation of the flow guiding groove and the groove, and rubber sleeves are arranged on the outer surface of the lower shell and the outer surface of the upper shell correspondingly. The lower shell is manually twisted, so that the column core shell can be driven to rotate through the support, the column core shell is matched with the clamping groove, so that the column core shell and the inner cavity of the clamping groove can be clamped, the effect of quick connection can be achieved, and the problem of damage caused by too large torque of a wrench in the connecting process is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of filters, in particular to a movable protective column sealing structure. Background Art

[0002] The mobile guard column of liquid chromatography is often used in liquid chromatographs and is usually located between the injector and the analytical column. Its main function is to intercept impurities and particulate matter in the sample, prevent them from entering the analytical column, avoid contamination and blockage of the analytical column, extend the service life of the analytical column, and at the same time perform preliminary separation of the sample to a certain extent.

[0003] In actual work, the existing mobile guard column can meet the basic requirements of the analytical column by connecting the pipeline and using suitable fillers, but it still has the following problems:

[0004] The mobile protective column of liquid chromatography is usually tightened using a wrench, but since the torque of the wrench is relatively large and difficult to control accurately, it will inevitably cause cracks or damage to the column body of the protective column. At the same time, when over-tightened, it will also cause excessive squeezing of the seal, causing the seal to deform and rupture. For this reason, the present application provides a mobile protective column sealing structure to meet the needs. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and provide a movable protective column sealing structure.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a movable protective column sealing structure, comprising a connecting piece and a guide groove provided on the side of the connecting piece;

[0007] A quick-connect assembly is placed on the side of the connector. The quick-connect assembly includes a column core shell arranged on one side of the connector. A sealing member is provided on the side of the column core shell close to the connector. A clamping groove is provided on the side of the sealing member. A groove is provided on the end of the column core shell close to the connector.

[0008] The protective component is placed at one end of the quick-connect component close to the connector and is used to protect the snap-in groove. The protective component includes a lower shell installed on the side of the connector close to the column core shell, and an upper shell is provided at the end of the lower shell away from the connector.

[0009] As a preferred embodiment, a bracket is provided at one end of the cylindrical core shell away from the connecting piece.

[0010] The technical effect of adopting the above technical solution is that the column core shell can be supported by providing a bracket.

[0011] As a preferred embodiment, sieve plates are provided at both ends of the bracket.

[0012] The technical effect of adopting the above technical solution is that the sample can be filtered by setting the sieve plate.

[0013] As a preferred embodiment, one end of the column core shell extends to the inner cavity of the clamping groove, and one end of the column core shell is slidably connected to the inner cavity of the clamping groove. The clamping groove can be a straight groove, an oblique groove, or an arc groove.

[0014] The technical effect of adopting the above technical solution is that the position of the column core shell can be fixed by providing the clamping groove.

[0015] Compared with the prior art, the advantages and positive effects of the present invention are:

[0016] By setting a connecting piece, the sample injector and the analytical column can be connected, and the flow of the sample can be guided by the cooperation of the guide groove and the groove. The outer surfaces of the lower shell and the upper shell are provided with rubber sleeves. When in use, the lower shell is manually twisted, so that the column core shell can be driven to rotate through the bracket. The column core shell and the clamping groove are cooperated to enable the column core shell to be clamped with the inner cavity of the clamping groove, thereby achieving a quick connection effect, avoiding the problem of damage caused by excessive wrench torque during the connection process, and providing a sealing member to avoid leakage of the sample during the flow process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the three-dimensional structure of a movable protective column sealing structure provided by the utility model;

[0018] Figure 2 This is a schematic diagram of the internal cross-sectional structure of a movable protective column sealing structure provided by the utility model;

[0019] Figure 3 This is a schematic cross-sectional view of a quick-connect assembly of a movable protective column sealing structure provided by the present invention;

[0020] Figure 4 This is a schematic cross-sectional view of a protective assembly of a movable protective column sealing structure provided by the present invention.

[0021] Legend:

[0022] 1. Connector; 11. Guide groove;

[0023] 2. Quick-connect assembly; 21. Column core shell; 22. Seal; 23. Screen plate; 24. Connecting groove; 25. Groove; 26. Snap-fit ​​groove; 27. Bracket;

[0024] 3. Protective assembly; 31. Lower shell; 32. Upper shell; 33. Snap ring; 34. Elastic part. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] like Figure 1 - Figure 4 As shown, this embodiment provides a technical solution: a movable protective column sealing structure, a connecting member 1 and a guide groove 11 opened on the side of the connecting member 1;

[0027] A quick-connect assembly 2 is placed on the side of the connector 1. The quick-connect assembly 2 includes a column core shell 21 disposed on one side of the connector 1. A sealing member 22 is disposed on the side of the column core shell 21 close to the connector 1. A snap-fit ​​groove 26 is provided on the side of the sealing member 22. A groove 25 is provided on the end of the column core shell 21 close to the connector 1.

[0028] The protective component 3 is placed on the end of the quick-connect component 2 close to the connector 1 and is used to protect the snap-in groove 26. The protective component 3 includes a lower shell 31 installed on the side of the connector 1 close to the column core shell 21. The end of the lower shell 31 away from the connector 1 is provided with an upper shell 32, and the end of the column core shell 21 away from the connector 1 is provided with a bracket 27. Both ends of the bracket 27 are provided with a sieve plate 23. The inner cavity of the column core shell 21 is provided with a connecting groove 24. By providing the connector 1, the injector and the analytical column can be connected. The guide groove 11 and the groove 25 cooperate to guide the flow of the sample. The outer surfaces of the lower shell 31 and the upper shell 32 are provided with rubber sleeves. When in use, the lower shell 31 can be manually twisted to pass through The bracket 27 drives the column core shell 21 to rotate. When the column core shell 21 moves to a certain position, one end of the column core shell 21 enters the inner cavity of the clamping groove 26, thereby prompting the column core shell 21 to be clamped with the inner cavity of the clamping groove 26, thereby achieving a quick connection effect, avoiding the problem of damage caused by excessive wrench torque during the connection process, and arranging the seal 22 to avoid leakage of the sample during the flow process. By arranging the bracket 27, the column core shell 21 can be supported. By arranging the connection groove 24, the position of the bracket 27 can be fixed, avoiding the position of the bracket 27 from shifting during the tightening process, causing damage, and by arranging the sieve plate 23, the sample can be filtered.

[0029] A step further, such as Figure 3 As shown: the top of the lower shell 31 away from the connecting member 1 is fixedly connected to the elastic member 34, and the bottom of the upper shell 32 away from the column core shell 21 is fixedly connected to the clamping ring 33. Through the cooperation of the clamping ring 33 and the elastic member 34, the lower shell 31 and the upper shell 32 can be spliced ​​together, thereby achieving the effect of protecting the connection between the column core shell 21 and the clamping groove 26. At the same time, it can effectively improve the sealing performance of the seal 22 and protect the seal 22.

[0030] When manually tightening the core shell 21, it is inevitable that the seal 22 will be squeezed to a certain extent. Figure 4 As shown: In the present embodiment, one end of the column core shell 21 extends to the inner cavity of the snap-fit ​​groove 26, and one end of the column core shell 21 is slidably connected to the inner cavity of the snap-fit ​​groove 26. The snap-fit ​​groove 26 can be a straight groove, an inclined groove, or an arc groove. The edge of the inner wall of the snap-fit ​​groove 26 is provided with flexible silicone. When tightening, one end of the column core shell 21 first contacts the outer surface of the flexible silicone, thereby causing the silicone to deform, thereby achieving the effect of increasing the application space of the seal 22 and avoiding excessive extrusion.

[0031] Working principle:

[0032] like Figure 1-4 As shown:

[0033] During use: first push one end of the lower shell 31 into the inner cavity of the upper shell 32, and through the cooperation of the clamping ring 33 and the elastic member 34, the lower shell 31 can be clamped with the upper shell 32. At this time, manually twist the lower shell 31, so that the column core shell 21 can be driven to rotate through the bracket 27, and the column core shell 21 and the clamping groove 26 can cooperate to enable the column core shell 21 to be clamped with the inner cavity of the clamping groove 26, thereby achieving a quick connection effect. When tightening, one end of the column core shell 21 first contacts the flexible silicone provided on the edge of the inner cavity of the clamping groove 26, thereby causing the silicone to deform, thereby achieving the effect of protecting the seal 22.

[0034] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A movable protective column sealing structure, characterized in that: include: A connecting piece (1) and a guide groove (11) provided on a side of the connecting piece (1); A quick-connect assembly (2) is placed on the side of the connecting piece (1). The quick-connect assembly (2) includes a column core shell (21) arranged on one side of the connecting piece (1). A sealing piece (22) is provided on the side of the column core shell (21) close to the connecting piece (1). A clamping groove (26) is provided on the side of the sealing piece (22). A groove (25) is provided on one end of the column core shell (21) close to the connecting piece (1). A protective assembly (3) is disposed at one end of the quick-connect assembly (2) close to the connector (1) and is used to protect the clamping groove (26). The protective assembly (3) comprises a lower shell (31) mounted on a side of the connector (1) close to the column core shell (21), and an upper shell (32) is disposed at one end of the lower shell (31) away from the connector (1).

2. A movable protective column sealing structure according to claim 1, characterized in that: A bracket (27) is provided at one end of the cylindrical core shell (21) away from the connecting piece (1).

3. The movable protective column sealing structure according to claim 2, characterized in that: Both ends of the bracket (27) are provided with sieve plates (23).

4. The movable protective column sealing structure according to claim 1, characterized in that: The inner cavity of the column core shell (21) is provided with a connecting groove (24).

5. The movable protection column sealing structure according to claim 1, characterized in that: One end of the column core shell (21) extends to the inner cavity of the clamping groove (26), and one end of the column core shell (21) is slidably connected to the inner cavity of the clamping groove (26). The clamping groove (26) can be a straight groove, an oblique groove, or an arc groove.

6. The movable protection column sealing structure according to claim 1, characterized in that: An elastic member (34) is fixedly connected to the top of the lower shell (31) at one end away from the connecting member (1).

7. The movable protection column sealing structure according to claim 1, characterized in that: A clamping ring (33) is fixedly connected to the bottom of one end of the upper shell (32) away from the cylindrical core shell (21).

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