Combined chromatographic column

Abstract

The utility model belongs to the technical field of chromatographic columns, and particularly relates to a combined chromatographic column which comprises a first column tube and a second column tube which are sequentially in butt joint in the axial direction, and a lengthened column tube for lengthening the length is arranged between the first column tube and the second column tube. Connecting mechanisms are installed at the ends, close to the lengthened column pipe, of the first column pipe and the second column pipe correspondingly, the two connecting mechanisms are used for detachably installing the lengthened column pipe on the first column pipe and the second column pipe correspondingly, and each connecting mechanism comprises a connector and a plurality of connecting rods; one end of each connecting rod is distributed on one side of the corresponding connector in an annular array mode, the two connectors are installed on the opposite sides of the first column pipe and the second column pipe respectively, the lengthened column pipe and the two connecting mechanisms are additionally arranged, and the lengthened column pipe can be detachably installed between the first column pipe and the second column pipe through the connecting mechanisms; the equipment can be combined for use according to the use environment.

Description

Technical Field

[0001] The utility model belongs to the technical field of chromatographic columns, and in particular relates to a combined chromatographic column. Background Art

[0002] The chromatographic column consists of a column tube, a pressure cap, a ferrule (sealing ring), a sieve plate (filter), a joint, screws, etc.

[0003] The existing chromatographic column is an integrated structure, and the length cannot be switched according to the use environment during use. It is necessary to equip chromatographic columns of various lengths for backup, and to replace chromatographic columns of different lengths in different use environments, which greatly reduces the practicality of the equipment. Utility Model Content

[0004] The purpose of the utility model is to provide a combined chromatographic column to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a combined chromatographic column, comprising: a first column tube and a second column tube are connected in sequence along the axial direction, an extended column tube for extending the length is provided between the first column tube and the second column tube, and a connecting mechanism is installed at one end of the first column tube and the second column tube close to the extended column tube, and the two connecting mechanisms are respectively used to detachably install the extended column tube on the first column tube and the second column tube.

[0006] Preferably, the connecting mechanism includes a joint and a plurality of connecting rods, one ends of the plurality of connecting rods are distributed in a circular array on one side of the joint, two of the joints are respectively installed on opposite sides of the first column tube and the second column tube, two ends of the extended column tube are respectively inserted into the two joints, both ends of the extended column tube are installed with mounting rings, and one ends of the plurality of connecting rods can be detachably installed on the corresponding mounting rings.

[0007] Preferably, a plurality of slots are provided in a circular array at the edge of the mounting ring, one end of each of the plurality of connecting rods is engaged in the corresponding slots, and an adjusting member rotatably connected to the connecting rod is provided on the side of the mounting ring facing away from the joint, so that the mounting ring is pressed toward one side of the joint when the adjusting member is rotated.

[0008] Preferably, the adjusting member includes an elliptical pressure block and a lever installed on one side of the elliptical pressure block, a rotating shaft is installed at the vertex of the elliptical pressure block, one end of the connecting rod is rotatably installed on the rotating shaft, and the elliptical pressure block includes a long end and a short end, and both the long end and the short end can abut against the mounting ring.

[0009] Preferably, a screw rod for length adjustment is installed between the connecting rod and the rotating shaft, one end of the screw rod is rotatably installed on the rotating shaft, and a threaded hole for accommodating the screw rod is opened on the connecting rod.

[0010] Preferably, flanges are installed at both ends of the extended column tube, the two flanges are respectively inserted into the corresponding joints, and a sealing gasket is installed between the joints and the flanges.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] (1) The utility model adds an extended column tube and two connecting mechanisms, through which the extended column tube can be detachably installed between the first column tube and the second column tube, so that the equipment can be used in combination according to the use environment.

[0013] (2) The utility model adds a joint, a mounting ring and a plurality of connecting rods. When one end of the extended column tube is inserted into the joint, the joint and the mounting ring are connected by the plurality of connecting rods, thereby facilitating docking and connection of the extended column tube with the first column tube and the second column tube.

[0014] (3) The utility model adds a slot and an adjusting member, and the slot facilitates setting the adjusting member on the side of the mounting ring away from the joint. When the adjusting member is rotated, the mounting ring is pressed toward one side of the joint, thereby pressing the extended column tube to dock with the first column tube or the second column tube, thereby facilitating locking and mounting the extended column tube on the first column tube or the second column tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view of the utility model;

[0016] Figure 2 It is a schematic diagram of the cooperation of the first column tube, the extended column tube and the connecting mechanism of the utility model;

[0017] Figure 3 It is a three-dimensional diagram of the lengthened column tube of the utility model;

[0018] Figure 4 It is a front view of the mounting ring of the utility model;

[0019] In the figure: 1, first column tube; 2, extended column tube; 3, second column tube; 4, mounting ring; 5, adjusting member; 6, screw rod; 7, connecting rod; 8, joint; 9, sealing gasket; 10, lever; 11, flange; 12, threaded hole; 13, slot; 14, rotating shaft; 15, elliptical pressure block. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] refer to Figure 1 As shown, the utility model provides a combined chromatographic column, comprising: a first column tube 1 and a second column tube 3 are connected in sequence along the axial direction, an extended column tube 2 for extending the length is provided between the first column tube 1 and the second column tube 3, and connecting mechanisms are installed at one end of the first column tube 1 and the second column tube 3 close to the extended column tube 2, and the two connecting mechanisms are respectively used to detachably install the extended column tube 2 on the first column tube 1 and the second column tube 3.

[0022] As described above, when using the first column tube 1, the second column tube 3, the extended column tube 2 and the two connecting mechanisms provided by the utility model, the extended column tube 2 can be detachably installed between the first column tube 1 and the second column tube 3 through the two connecting mechanisms, thereby realizing the combined installation of the equipment. At the same time, there are multiple extended column tubes 2, and the lengths of the multiple extended column tubes 2 are different.

[0023] In the present utility model, combined with Figure 2 As shown, the connection mechanism of this embodiment includes a joint 8 and a plurality of connecting rods 7, one ends of the plurality of connecting rods 7 are distributed in a ring array on one side of the joint 8, two joints 8 are respectively installed on the opposite sides of the first column tube 1 and the second column tube 3, the two ends of the extended column tube 2 are respectively inserted into the two joints 8, both ends of the extended column tube 2 are installed with mounting rings 4, and one ends of the plurality of connecting rods 7 can be detachably installed on the corresponding mounting rings 4.

[0024] Combination Figure 3-4 As shown, a plurality of slots 13 are provided in a circular array at the edge of the mounting ring 4, one end of each of the plurality of connecting rods 7 is engaged in the corresponding slots 13, and an adjusting member 5 rotatably connected to the connecting rod 7 is provided on the side of the mounting ring 4 facing away from the joint 8, and is used to press the mounting ring 4 toward one side of the joint 8 when the adjusting member 5 is rotated.

[0025] As described above, when using the connection mechanism provided by the utility model, the joint 8 in the connection mechanism provides a plug-in position for the extended column tube 2 on the first column tube 1 and the second column tube 3. After the extended column tube 2 is plugged into the joint 8, the connecting rod 7 is flipped toward one side of the mounting ring 4 so that the connecting rod 7 is in the slot 13. At the same time, the adjusting member 5 is on the side of the mounting ring 4 away from the joint 8. The adjusting member 5 is rotated to drive the mounting ring 4 to press toward one side of the joint 8, thereby facilitating the stable plugging of the extended column tube 2 into the joint 8.

[0026] Further, in order to allow the adjusting member 5 to detachably mount the connecting rod 7 on the mounting ring 4, refer to Figure 2 As shown, the adjusting member 5 includes an elliptical pressing block 15 and a lever 10 installed on one side of the elliptical pressing block 15. A rotating shaft 14 is installed at the vertex of the elliptical pressing block 15. One end of the connecting rod 7 is rotatably installed on the rotating shaft 14. The elliptical pressing block 15 includes a long end and a short end, and both the long end and the short end can abut against the mounting ring 4. After one end of the extended column tube 2 is inserted into the joint 8, the connecting rod 7 is moved closer to one side of the mounting ring 4 so that the connecting rod 7 is in the slot 13. At this time, the short end of the elliptical pressing block 15 abuts against the side of the mounting ring 4 away from the joint 8. The lever 10 can drive the elliptical pressing block 15 to rotate on the rotating shaft 14, so that the long end of the elliptical pressing block 15 abuts against the mounting ring 4. In this process, the mounting ring 4 is moved closer to the joint 8, so that the extended column tube 2 is forced to be inserted into the joint 8 to avoid leakage at the position of the joint 8.

[0027] Further, in order to adjust the degree of clamping between the extended column tube 2 and the first column tube 1 or the second column tube 3, refer to Figure 2 As shown, a screw rod 6 for length adjustment is also installed between the connecting rod 7 and the rotating shaft 14, one end of the screw rod 6 is rotatably installed on the rotating shaft 14, and a threaded hole 12 for accommodating the screw rod 6 is opened on the connecting rod 7. By allowing the screw rod 6 to rotate in the threaded hole 12, the overall length of the connecting rod 7 and the screw rod 6 can be adjusted. After the adjusting member 5 rotates and adjusts the screw rod 6, the mounting ring 4 can be driven to approach the joint 8, thereby adjusting the pressing force between the extended column tube 2 and the first column tube 1 or the second column tube 3 to prevent the extended column tube 2 and the first column tube 1 or the second column tube 3 from loosening.

[0028] Further, in order to avoid leakage between the extended column tube 2 and the first column tube 1 and the second column tube 3, refer to Figure 2 As shown, flanges 11 are installed at both ends of the extended column tube 2, and the two flanges 11 are respectively inserted into the corresponding joints 8, and a sealing gasket 9 is installed between the joint 8 and the flanges 11. The sealing gasket 9 is placed in the joint 8, and the flange 11 at one end of the extended column tube 2 is inserted into the joint 8. When the extended column tube 2 is locked and installed on the first column tube 1 and the second column tube 3 through the connecting mechanism, the sealing gasket 9 is pressed and filled between the extended column tube 2 and the first column tube 1 and the second column tube 3, thereby sealing the gap therebetween.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A combined chromatographic column, characterized in that: include: A first column tube (1) and a second column tube (3) are connected in sequence along the axial direction; an extended column tube (2) for extending the length is provided between the first column tube (1) and the second column tube (3); a connecting mechanism is installed at one end of the first column tube (1) and the second column tube (3) close to the extended column tube (2); the two connecting mechanisms are used to detachably install the extended column tube (2) on the first column tube (1) and the second column tube (3), respectively.

2. A combined chromatographic column according to claim 1, characterized in that: The connection mechanism comprises a joint (8) and a plurality of connection rods (7), one end of the plurality of connection rods (7) being distributed in a ring array on one side of the joint (8), two of the joints (8) being respectively installed on opposite sides of the first column tube (1) and the second column tube (3), two ends of the extended column tube (2) being respectively inserted into the two joints (8), both ends of the extended column tube (2) being installed with mounting rings (4), and one end of the plurality of connection rods (7) being detachably installed on the corresponding mounting rings (4).

3. A combined chromatographic column according to claim 2, characterized in that: The edge of the mounting ring (4) is provided with a plurality of slots (13) in a circular array, one end of each of the plurality of connecting rods (7) is engaged in the corresponding slot (13), and an adjusting member (5) rotatably connected to the connecting rod (7) is provided on the side of the mounting ring (4) facing away from the joint (8), and when the adjusting member (5) is rotated, the mounting ring (4) is pressed toward one side of the joint (8).

4. A combined chromatographic column according to claim 3, characterized in that: The adjusting member (5) comprises an elliptical pressing block (15) and a lever (10) mounted on one side of the elliptical pressing block (15); a rotating shaft (14) is mounted at the vertex of the elliptical pressing block (15); one end of the connecting rod (7) is rotatably mounted on the rotating shaft (14); the elliptical pressing block (15) comprises a long end and a short end, and both the long end and the short end can abut against the mounting ring (4).

5. A combined chromatographic column according to claim 4, characterized in that: A screw rod (6) for adjusting the length is also installed between the connecting rod (7) and the rotating shaft (14). One end of the screw rod (6) is rotatably installed on the rotating shaft (14). A threaded hole (12) for accommodating the screw rod (6) is provided on the connecting rod (7).

6. A combined chromatographic column according to claim 2, characterized in that: Flanges (11) are installed at both ends of the extended column tube (2), and the two flanges (11) are respectively inserted into the corresponding joints (8), and a sealing gasket (9) is installed between the joint (8) and the flanges (11).

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