Three-way design connecting piece of chromatographic column

Abstract

The utility model discloses a three-way design connecting piece of a chromatographic column, and relates to the technical field of pipeline connecting pieces, the three-way design connecting piece of the chromatographic column comprises a main body and connecting pipes arranged on the top surface and two sides of the main body, and further comprises a fixed rod arranged in the connecting pipes, four groups of rotating bolts are sleeved on the surface of the fixed rod, wherein one sides of the two sets of rotating bolts are fixedly connected with a movable plate, the surface of the movable plate is fixedly connected with two sets of supporting assemblies, each supporting assembly comprises a fixing block, a side pressing spring and a fixing ring, a rotating rod is sleeved with the fixing ring, and the surface of the rotating rod is sleeved with a supporting frame; one end of the support frame is fixedly connected with a support sheet; the fixing lantern ring is arranged at one end of the connecting pipe, and a sealing assembly is connected into the fixing lantern ring in a sleeved mode. Through the arrangement of the supporting assembly, pollution caused by backflow of different detection samples is prevented, and the safety of the three-way design connecting piece of the chromatographic column is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline connectors, in particular to a tee design connector for a chromatographic column. Background Technique

[0002] Chromatographic columns can be divided into two categories: packed columns and open tubular columns. Most are made of metal or glass. The separation effect of a chromatographic column depends on the selected stationary phase, as well as the preparation and operating conditions of the chromatographic column. A chromatographic column is a key component in chromatographic analysis, used to separate and analyze compounds in a sample. The tee design connector of a chromatographic column is usually used for the connection part in a liquid chromatography system, which can connect three chromatographic columns and enter different detectors to achieve the function of separating multiple verified compounds at one time.

[0003] The utility model patent with the publication number of CN206725514U discloses a connection device between a metal chromatographic column and a carrier gas accessory of a gas chromatograph. The connector includes a body, a first fixing nut located at the upper part of the body and used for connecting with the carrier gas accessory, and a second fixing nut located at the lower part of the body and used for fixing the chromatographic column. The longitudinal center line of the body is circular and hollow. A step is arranged inside the body, below the first fixing nut and above the second fixing nut. An L-shaped annular gasket for making the chromatographic column located on the longitudinal center line of the liner is arranged below the step. The inner diameter of the gasket is slightly larger than the outer diameter of the chromatographic column. A first O-ring is arranged inside the first fixing nut. The utility model arranges a connector between the carrier gas accessory and the chromatographic column, greatly improving the airtightness between the chromatographic column and the carrier gas accessory, improving the precision of the instrument, and increasing the accuracy of separation and analysis of the gas chromatograph.

[0004] However, the existing tee design connectors for chromatographic columns are not convenient for connecting three chromatographic columns during use to separate multiple verified compounds at one time. Content of the Utility Model

[0005] The utility model provides a tee design connector for a chromatographic column, which has the advantage of being convenient for connecting three chromatographic columns during use to separate multiple verified compounds at one time, so as to solve the problem that the existing ones are not convenient for connecting three chromatographic columns during use to separate multiple verified compounds at one time.

[0006] In order to achieve the purpose of connecting three chromatographic columns together during use to separate multiple verification compounds at one time, the present utility model provides the following technical solutions: A tee design connecting piece for a chromatographic column, including a main body and connecting pipes arranged on the top surface and both sides of the main body, further including: A fixing rod arranged inside the connecting pipe, on the surface of the fixing rod are sleeved four groups of rotating bolts, on one side of two of the rotating bolts are fixedly connected with movable plates, on the surface of the movable plates are fixedly connected two groups of support components, the support components include fixing blocks, side pressure springs and fixing rings, inside the fixing rings are sleeved rotating rods, on the surface of the rotating rods are sleeved support frames, and one end of the support frames is fixedly connected with support pieces; A fixing sleeve ring arranged at one end of the connecting pipe, inside the fixing sleeve ring is sleeved a sealing component, the sealing component includes a sealing steel ring and a rubber ring; An upper clamping block arranged on the surface of the fixing sleeve ring, one end of the upper clamping block is rotatably connected with a lower clamping block, on one side of the lower clamping block is rotatably connected a limiting component, the limiting component includes a connecting rod, a threaded rod and a fixing nut.

[0007] As a preferred technical solution of the present utility model, the support component includes a fixing block fixedly connected to the surface of the movable plate, inside the fixing block is sleeved a side pressure spring, and one end of the side pressure spring is fixedly connected with a fixing ring.

[0008] As a preferred technical solution of the present utility model, the sealing component includes a sealing steel ring sleeved inside the fixing sleeve ring, and rubber rings are sleeved on both sides of the sealing steel ring.

[0009] As a preferred technical solution of the present utility model, the limiting component includes a connecting rod rotatably connected to one side of the lower clamping block, on the surface of the connecting rod is sleeved a threaded rod, and at the top of the threaded rod is threadedly connected a fixing nut.

[0010] As a preferred technical solution of the present utility model, an observation window is opened on the front surface of the main body, and an external connecting pipe is clamped inside the upper clamping block.

[0011] As a preferred technical solution of the present utility model, on one side of the other two rotating bolts are fixedly connected with baffles, and one end of the rotating rod is fixedly connected with a knob.

[0012] As a preferred technical solution of the present utility model, on both sides of the sealing steel ring are opened card slots adapted to the rubber rings, and on the surface of the connecting pipe is opened a threaded hole adapted to the rotating rod.

[0013] As a preferred technical solution of the present utility model, on one side of the movable plate is fixedly connected with a protection plate adapted to the support piece, and on one end of the lower clamping block is opened a rotating hole adapted to the connecting rod.

[0014] Compared with the prior art, the utility model provides a tee design connecting piece for a chromatographic column, which has the following beneficial effects:

[0015] 1. For the tee design connecting piece of the chromatographic column, through the setting of the support component, it prevents the backflow of different detection samples from causing pollution and improves the safety of the tee design connecting piece of the chromatographic column.

[0016] 2. For the tee design connecting piece of the chromatographic column, through the setting of the sealing component and the limiting component, it achieves the effects of convenient installation of the chromatographic column and enhanced sealing, and improves the convenience of the tee design connecting piece of the chromatographic column.

[0017] 3. For the tee design connecting piece of the chromatographic column, through the setting of the rotating rod, the support frame and the support piece, it achieves the effect of closing the connecting pipe and improves the flexibility of the tee design connecting piece of the chromatographic column. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 is a schematic diagram of the disassembled structure of the utility model;

[0020] Figure 3 is a schematic diagram of the support component structure of the utility model;

[0021] Figure 4 is a schematic diagram of the sealing component and the limiting component structure of the utility model.

[0022] In the figure: 1, main body; 2, connecting pipe; 3, fixed rod; 4, rotating bolt; 5, movable plate; 6, support component; 601, fixed block; 602, side compression spring; 603, fixed ring; 7, rotating rod; 8, support frame; 9, support piece; 10, fixed collar; 11, sealing component; 1101, sealing steel ring; 1102, rubber ring; 12, upper clamping block; 13, lower clamping block; 14, limiting component; 1401, connecting rod; 1402, threaded rod; 1403, fixed nut; 15, observation window; 16, external connecting pipe; 17, baffle; 18, knob; 19, protective plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figures 1-4, the utility model discloses a tee design connecting piece for a chromatographic column, which includes a main body 1 and connecting pipes 2 arranged on the top surface and both sides of the main body 1, and further includes: a fixing rod 3 arranged inside the connecting pipe 2, and four groups of rotating bolts 4 are sleeved on the surface of the fixing rod 3. One side of two of the rotating bolts 4 is fixedly connected with a movable plate 5, and two groups of supporting components 6 are fixedly connected to the surface of the movable plate 5. The supporting component 6 includes a fixing block 601, a side compression spring 602 and a fixing ring 603. A rotating rod 7 is sleeved inside the fixing ring 603, a supporting frame 8 is sleeved on the surface of the rotating rod 7, and one end of the supporting frame 8 is fixedly connected with a supporting piece 9; a fixing collar 10 is arranged at one end of the connecting pipe 2, and a sealing component 11 is sleeved inside the fixing collar 10. The sealing component 11 includes a sealing steel ring 1101 and a rubber ring 1102; an upper clamping block 12 is arranged on the surface of the fixing collar 10, one end of the upper clamping block 12 is rotatably connected with a lower clamping block 13, and a limiting component 14 is rotatably connected to one side of the lower clamping block 13. The limiting component 14 includes a connecting rod 1401, a threaded rod 1402 and a fixing nut 1403.

[0025] Specifically, the supporting component 6 includes a fixing block 601 fixedly connected to the surface of the movable plate 5. A side compression spring 602 is sleeved inside the fixing block 601, and one end of the side compression spring 602 is fixedly connected with a fixing ring 603.

[0026] In this implementation scheme, when injecting the detection sample, the detection sample is pressurized to push the movable plate 5 to rotate on the fixing rod 3. Then, the side compression spring 602 is deformed by force to generate elastic force. When the injection stops, the side compression spring 602 pushes the movable plate 5 to close in time.

[0027] Specifically, the sealing component 11 includes a sealing steel ring 1101 sleeved inside the fixing collar 10, and rubber rings 1102 are sleeved on both sides of the sealing steel ring 1101.

[0028] In this implementation scheme, the rubber ring 1102 is stuck in the card slot on the sealing steel ring 1101, and the installed sealing steel ring 1101 is snapped into the fixing collar 10.

[0029] Specifically, the limiting component 14 includes a connecting rod 1401 rotatably connected to one side of the lower clamping block 13. A threaded rod 1402 is sleeved on the surface of the connecting rod 1401, and a fixing nut 1403 is threadedly connected to the top of the threaded rod 1402.

[0030] In this implementation scheme, the outer connecting pipe 16 and the fixing collar 10 are clamped and fixed by using the upper clamping block 12 and the lower clamping block 13. The threaded rod 1402 is pulled and stuck in the groove on one side of the upper clamping block 12, and the fixing nut 1403 is twisted so that the fixing nut 1403 presses the surface of the upper clamping block 12.

[0031] Specifically, an observation window 15 is opened on the front surface of the main body 1, and an outer connecting pipe 16 is clamped inside the upper clamping block 12.

[0032] In this embodiment, the observation window 15 facilitates the observation of the internal situation for convenient maintenance, and the external connecting pipe 16 facilitates the connection of the chromatographic column and is also suitable for disassembly and assembly.

[0033] Specifically, one side of the other two sets of rotating bolts 4 is fixedly connected with a baffle 17, and one end of the rotating rod 7 is fixedly connected with a knob 18.

[0034] In this embodiment, the baffle 17 facilitates the support of the rotating bolt 4, and the knob 18 facilitates the rotation of the rotating rod 7.

[0035] Specifically, both sides of the sealing steel ring 1101 are provided with card slots adapted to the rubber ring 1102, and the surface of the connecting pipe 2 is provided with threaded holes adapted to the rotating rod 7.

[0036] In this embodiment, the card slots facilitate the clamping and fixing of the rubber ring 1102, and the threaded holes facilitate the rotation of the rotating rod 7.

[0037] Specifically, one side of the movable plate 5 is fixedly connected with a protective plate 19 adapted to the support piece 9, and one end of the lower clamping block 13 is provided with a rotating hole adapted to the connecting rod 1401.

[0038] In this embodiment, the protective plate 19 facilitates the protection of the movable plate 5, and the rotating hole facilitates the rotation of the connecting rod 1401.

[0039] The working principle and usage process of the present utility model: When in use, three chromatographic columns are connected by a tee structure and enter different detectors. When injecting a test sample, the test sample is pressurized to push the movable plate 5 to rotate on the fixed rod 3, and then the side pressure spring 602 is deformed by force to generate elastic force. When the injection stops, the side pressure spring 602 pushes the movable plate 5 to close in time. When in use, the chromatographic column is connected to the external connecting pipe 16, and then the rubber ring 1102 is stuck in the card slot on the sealing steel ring 1101. The installed sealing steel ring 1101 is stuck into the fixed collar 10, and the external connecting pipe 16 and the fixed collar 10 are clamped and fixed by the upper clamping block 12 and the lower clamping block 13. Pull the threaded rod 1402 and insert it into the groove on one side of the upper clamping block 12, and twist the fixing nut 1403 to make the fixing nut 1403 press the surface of the upper clamping block 12. When it is necessary to stop injecting the sample in one group, twist the knob 18 to make the rotating rod 7 rotate inside, and then drive the support frame 8 to push the support piece 9 to press the movable plate 5.

[0040] In summary, for the tee design connector of the chromatographic column, through the setting of the support assembly 6, the effect of separating multiple verification compounds at one time is achieved, while preventing the backflow of different detection samples from causing contamination, improving the safety of the tee design connector of the chromatographic column. Through the setting of the sealing assembly 11 and the limiting assembly 14, the effects of convenient installation of the chromatographic column and enhanced sealing are achieved, improving the convenience of the tee design connector of the chromatographic column. Through the setting of the rotating rod 7, the support frame 8 and the support piece 9, the effect of closing the connecting pipe 2 is achieved, improving the flexibility of the tee design connector of the chromatographic column.

[0041] It should be noted that in this text, terms such as "including", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0042] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A three-way design connecting piece for a chromatographic column, comprising a main body (1) and connecting pipes (2) arranged on the top surface and both sides of the main body (1), characterized in that, Also includes: A fixed rod (3) is arranged inside the connecting tube (2), and four groups of rotating bolts (4) are sleeved on the surface of the fixed rod (3), wherein one side of two groups of rotating bolts (4) are fixedly connected to a movable plate (5), and the surface of the movable plate (5) is fixedly connected to two groups of supporting components (6), and the supporting components (6) include a fixed block (601), a side pressure spring (602) and a fixed ring (603), and the interior of the fixed ring (603) is sleeved with a rotating rod (7), and the surface of the rotating rod (7) is sleeved with a support frame (8), and one end of the support frame (8) is fixedly connected to a support sheet (9); A fixed collar (10) is provided at one end of the connecting pipe (2), wherein a sealing assembly (11) is sleeved inside the fixed collar (10), and the sealing assembly (11) comprises a sealing steel ring (1101) and a rubber ring (1102); An upper clamping block (12) is provided on the surface of the fixed collar (10), one end of the upper clamping block (12) is rotatably connected to a lower clamping block (13), one side of the lower clamping block (13) is rotatably connected to a limiting assembly (14), and the limiting assembly (14) comprises a connecting rod (1401), a threaded rod (1402) and a fixing nut (1403).

2. The tee design connecting piece of a chromatographic column according to claim 1, characterized in that: The support assembly (6) comprises a fixed block (601) fixedly connected to the surface of the movable plate (5), a side pressure spring (602) is sleeved inside the fixed block (601), and one end of the side pressure spring (602) is fixedly connected to a fixing ring (603).

3. The tee design connector of a chromatographic column according to claim 1, characterized in that: The sealing assembly (11) comprises a sealing steel ring (1101) sleeved inside the fixed collar (10), and rubber rings (1102) are sleeved on both sides of the sealing steel ring (1101).

4. The three-way design connecting piece of a chromatographic column according to claim 1, characterized in that: The limiting assembly (14) comprises a connecting rod (1401) rotatably connected to one side of the lower clamping block (13), a threaded rod (1402) being sleeved on the surface of the connecting rod (1401), and a fixing nut (1403) being threadedly connected to the top of the threaded rod (1402).

5. The tee design connecting piece of a chromatographic column according to claim 1, characterized in that: An observation window (15) is provided on the front of the main body (1), and an external pipe (16) is clamped inside the upper clamping block (12).

6. The tee design connecting piece of a chromatographic column according to claim 1, characterized in that: One side of the other two groups of rotating bolts (4) is fixedly connected to a baffle (17), and one end of the rotating rod (7) is fixedly connected to a knob (18).

7. The three-way connector for a chromatography column according to claim 3, characterized in that: Both sides of the sealing steel ring (1101) are provided with slots adapted to the rubber ring (1102), and the surface of the connecting pipe (2) is provided with a threaded hole adapted to the rotating rod (7).

8. The tee design connecting piece of a chromatographic column according to claim 4, characterized in that: A protective plate (19) adapted to the support plate (9) is fixedly connected to one side of the movable plate (5), and a rotating hole adapted to the connecting rod (1401) is provided at one end of the lower clamping block (13).

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