Adjustable universal liquid chromatographic column connecting piece

Abstract

The utility model discloses an adjustable universal liquid chromatographic column connecting piece which comprises an upper connecting seat and a lower connecting seat, guide rods are symmetrically mounted on two sides of the bottom of the upper connecting seat, and the lower connecting seat is connected to the surfaces of the two guide rods in a sliding manner along the axial direction; the upper connecting base and the lower connecting base are symmetrically arranged and connected through a distance adjusting assembly. The bottom of the upper connecting seat is fixedly connected with first connecting sleeves which are communicated with each other at the position corresponding to the internal branch channel, and the top of the lower connecting seat is fixedly connected with connecting assemblies which are communicated with each other at the position corresponding to the internal branch channel. The adjustable universal liquid chromatographic column connecting piece is reasonable in structural design and convenient to use, can be quickly adjusted according to the length of a liquid chromatographic column, has higher adaptability, does not need to manufacture a matched connecting piece, reduces the use cost, is more convenient to operate when being connected with the chromatographic column, can be quickly operated by a user, and is very convenient to use. And the use requirements can be comprehensively met.

Description

Technical Field

[0001] The utility model relates to the technical field of chromatographic columns, in particular to an adjustable universal liquid chromatographic column connector. Background Art

[0002] Chromatography is a separation and analysis method with separation as the core. Therefore, the chromatographic column responsible for separation is the heart of the chromatographic system. The requirements for the chromatographic column are high column efficiency, good selectivity, and fast analysis speed.

[0003] Most of the liquid chromatography connection devices in the prior art cannot be adjusted during use. Since the lengths of the chromatographic columns are different, it is necessary to make matching connectors, which increases the cost of use. In addition, the traditional connectors are often inconvenient to operate when connected to the chromatographic columns. For this reason, we propose an adjustable universal liquid chromatography column connector to solve the problems raised in the above background technology. Utility Model Content

[0004] The utility model aims to provide an adjustable universal liquid chromatography column connector 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: an adjustable universal liquid chromatography column connector, comprising an upper connector and a lower connector, guide rods are symmetrically installed on both sides of the bottom of the upper connector, and the lower connector is axially slidably connected to the surfaces of the two guide rods, and the upper connector and the lower connector are symmetrically arranged and connected by a spacing adjustment component;

[0006] The bottom of the upper connecting seat is fixedly connected with a first connecting sleeve that is interconnected corresponding to the position of its internal branch channel, and the top of the lower connecting seat is fixedly connected with a connecting component that is interconnected corresponding to the position of its internal branch channel, and a chromatographic column body is installed between the first connecting sleeve and the connecting component.

[0007] Furthermore, the spacing adjustment assembly includes a screw barrel, which is fixedly connected at the center position of the bottom of the upper connecting seat, a stud is connected to the inner thread of the screw barrel, the bottom end of the stud passes through the outside of the screw barrel and is fixedly connected to a rotating block, the outer side of the rotating block is movably connected to a covering sleeve, and the covering sleeve is fixedly connected to the top of the lower connecting seat.

[0008] Furthermore, the connecting assembly includes a liquid through pipe, which is fixedly connected to the top of the lower connecting seat and is interconnected with the branch channel inside the liquid through pipe. An annular rotating plate is rotatably connected in the groove of the inner wall of the liquid through pipe, and the inner side of the annular rotating plate is fixedly connected to a liquid outlet pipe. The top end of the liquid outlet pipe passes through the outside of the liquid through pipe and is fixedly connected to a bellows interconnected with the outside of the liquid through pipe, and the top end of the bellows is fixedly connected to a second connecting sleeve interconnected with the bellows.

[0009] Furthermore, a sealing ring is fixedly connected to the top of the liquid passage tube at a position corresponding to the liquid outlet tube, and a liquid guide block is fixedly connected to the inner wall of the liquid passage tube at a position close to the bottom end thereof.

[0010] Furthermore, the side walls of the first connecting sleeve and the second connecting sleeve are both provided with internal threads, and the outer surfaces of the two column cap connecting ends of the chromatographic column body are both provided with external threads that match the internal threads.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] The utility model discloses a kind of adjustable universal liquid chromatography column connector, and the ... BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural cross-sectional view of the utility model;

[0014] Figure 2 This is a structural cross-sectional view of the spacing adjustment component of the utility model;

[0015] Figure 3 It is a structural cross-sectional view of the connection component of the utility model.

[0016] In the figure: 1 upper connecting seat, 2 lower connecting seat, 3 guide rod, 4 spacing adjustment assembly, 41 screw barrel, 42 stud, 43 rotating block, 44 covering sleeve, 5 first connecting sleeve, 6 connecting assembly, 61 liquid pipe, 62 annular rotating plate, 63 liquid outlet pipe, 64 bellows, 65 second connecting sleeve, 66 sealing ring, 67 liquid guide block, 7 chromatographic column body. DETAILED DESCRIPTION

[0017] 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.

[0018] See also Figure 1-3 , an adjustable universal liquid chromatography column connector, comprising an upper connecting seat 1 and a lower connecting seat 2, each of which has a main liquid channel and a plurality of branch channels interconnected therewith, guide rods 3 are symmetrically installed on both sides of the bottom of the upper connecting seat 1, the lower connecting seat 2 is axially slidably connected to the surfaces of the two guide rods 3, the bottom end of the guide rod 3 is fixedly connected with a baffle plate for blocking and limiting the lower connecting seat 2 to prevent it from falling off the guide rod 3, the upper connecting seat 1 and the lower connecting seat 2 are symmetrically arranged and connected by a spacing adjustment component 4.

[0019] A first connecting sleeve 5 is fixedly connected to the bottom of the upper connecting seat 1 corresponding to the position of its internal branch channel, and a connecting component 6 is fixedly connected to the top of the lower connecting seat 2 corresponding to the position of its internal branch channel. A chromatographic column body 7 is installed between the first connecting sleeve 5 and the connecting component 6.

[0020] Specifically, the spacing adjustment component 4 includes a screw barrel 41, which is fixedly connected to the center position of the bottom of the upper connecting seat 1, and a stud 42 is connected to the inner thread of the screw barrel 41. The bottom end of the stud 42 passes through the outside of the screw barrel 41 and is fixedly connected to a rotating block 43. The outer side of the rotating block 43 is movably connected to a covering sleeve 44, and the covering sleeve 44 is fixedly connected to the top of the lower connecting seat 2. A cushion is provided on the surface of the stud 42 and above the covering sleeve 44 to facilitate the user to rotate it, thereby improving the convenience and comfort of operation.

[0021] Specifically, the connecting component 6 includes a liquid through pipe 61, which is fixedly connected to the top of the lower connecting seat 2 and is interconnected with the branch channel inside the liquid through pipe 61. An annular rotating plate 62 is rotatably connected in the groove on the inner wall of the liquid through pipe 61. The inner side of the annular rotating plate 62 is fixedly connected to a liquid outlet pipe 63. The annular rotating plate 62 serves to limit the liquid outlet pipe 63 to prevent it from moving in the vertical direction and falling out of the liquid through pipe 61. The top end of the liquid outlet pipe 63 passes through the outside of the liquid through pipe 61 and is fixedly connected to a bellows 64 interconnected with it. The top end of the bellows 64 is fixedly connected to a second connecting sleeve 65 interconnected with it.

[0022] Specifically, a sealing ring 66 is fixedly connected to the position of the top of the liquid through tube 61 corresponding to the liquid outlet tube 63, and a liquid guide block 67 is fixedly connected to the inner wall of the liquid through tube 61 and near its bottom end. The sealing ring 66 can prevent external dust and debris from penetrating through the gap between the liquid through tube 61 and the liquid outlet tube 63 and affecting use. The liquid guide block 67 can guide the seeped liquid to the liquid channel inside the lower connecting seat 2.

[0023] Specifically, the side walls of the first connecting sleeve 5 and the second connecting sleeve 65 are both provided with internal threads, and the outer surfaces of the two column cap connecting ends of the chromatographic column body 7 are both provided with external threads that are compatible with the internal threads, and the connection between the first connecting sleeve 5 and the second connecting sleeve 65 and the chromatographic column body 7 is achieved by using threads.

[0024] The adjustable universal liquid chromatography column connector has a reasonable structural design and is easy to use. It can be quickly adjusted according to the length of the liquid chromatography column and has high adaptability. There is no need to make compatible connectors, which reduces the cost of use. It is also convenient to operate when connected to the chromatography column, and the user can operate it quickly, which can fully meet the use requirements.

[0025] When in use, the stud 42 can be rotated according to the length of the chromatographic column body 7 to make it extend and retract inside the screw barrel 41. While driving the rotating block 43 to rotate, the limiting effect of the two guide rods 3 can be used to make the covering sleeve 44 drive the lower connecting seat 2 to move in the vertical direction, thereby adjusting the spacing between the first connecting sleeve 5 and the second connecting sleeve 65. After one end of the chromatographic column body 7 is threadedly connected to the first connecting sleeve 5, the second connecting sleeve 65 is moved upward under the connection of the bellows 64. Through the connection of the annular rotating plate 62, the second connecting sleeve 65 can be rotated and tightened to the other end of the chromatographic column body 7 for connection, thereby forming an integral and interconnected liquid channel.

[0026] 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. An adjustable universal liquid chromatography column connector, comprising an upper connector (1) and a lower connector (2), characterized in that: Guide rods (3) are symmetrically mounted on both sides of the bottom of the upper connecting seat (1); the lower connecting seat (2) is axially slidably connected to the surfaces of the two guide rods (3); the upper connecting seat (1) and the lower connecting seat (2) are symmetrically arranged and connected via a spacing adjustment component (4); A first connecting sleeve (5) which is interconnected is fixedly connected to the bottom of the upper connecting seat (1) at a position corresponding to the internal branch channel thereof, and a connecting assembly (6) which is interconnected is fixedly connected to the top of the lower connecting seat (2) at a position corresponding to the internal branch channel thereof, and a chromatographic column body (7) is installed between the first connecting sleeve (5) and the connecting assembly (6) opposite to each other.

2. The adjustable universal liquid chromatography column connector according to claim 1, characterized in that: The spacing adjustment assembly (4) comprises a screw barrel (41), wherein the screw barrel (41) is fixedly connected to the center position of the bottom of the upper connecting seat (1), the screw barrel (41) is internally threadedly connected to a stud (42), the bottom end of the stud (42) passes through the outside of the screw barrel (41) and is fixedly connected to a rotating block (43), the outer side of the rotating block (43) is movably connected to a covering sleeve (44), and the covering sleeve (44) is fixedly connected to the top of the lower connecting seat (2).

3. The adjustable universal liquid chromatography column connector according to claim 2, characterized in that: The connecting assembly (6) comprises a liquid passing pipe (61), the liquid passing pipe (61) being fixedly connected to the top of the lower connecting seat (2) and being interconnected with the branch channel inside the lower connecting seat (2), an annular rotating plate (62) being rotatably connected in the groove on the inner wall of the liquid passing pipe (61), a liquid outlet pipe (63) being fixedly connected to the inner side of the annular rotating plate (62), the top end of the liquid outlet pipe (63) passing through the outside of the liquid passing pipe (61) being fixedly connected with a bellows (64) being interconnected with the bellows, and the top end of the bellows (64) being fixedly connected with a second connecting sleeve (65) being interconnected with the bellows.

4. The adjustable universal liquid chromatography column connector according to claim 3, characterized in that: A sealing ring (66) is fixedly connected to the top of the liquid passage tube (61) at a position corresponding to the liquid outlet tube (63), and a liquid guide block (67) is fixedly connected to the inner wall of the liquid passage tube (61) at a position close to the bottom end thereof.

5. The adjustable universal liquid chromatography column connector according to claim 4, characterized in that: The side walls of the first connecting sleeve (5) and the second connecting sleeve (65) are both provided with internal threads, and the outer surfaces of the two column cap connecting ends of the chromatographic column body (7) are both provided with external threads that match the internal threads.

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