Chromatographic column clamping device

Abstract

The utility model provides a chromatographic column clamping device, which comprises: a transverse plate, which is provided with a pair of connecting holes, a screw rod is rotatably connected in each connecting hole, a pair of symmetrically arranged clamping sheets are arranged between the pair of screw rods, the pair of clamping sheets are arranged at an interval in the length direction of the screw rods, and one of the clamping sheets is fixed on the transverse plate and is used for clamping a chromatographic column; the push plate is arranged on the side, away from the transverse plate, of the other clamping piece at intervals, a plurality of springs are arranged between the push plate and the other clamping piece, a plurality of containing holes corresponding to the springs in position are formed in the push plate, guide columns are arranged in the containing holes in a penetrating mode and penetrate through the springs to be connected with the other clamping piece, and one end of each screw penetrates out of the transverse plate to be in threaded connection with the push plate. The chromatographic columns with various sizes are clamped by screwing the screw rod, and the spring between the clamping sheet and the push plate can play a buffering role, so that the chromatographic columns are effectively prevented from being crushed.

Description

Technical Field

[0001] The utility model belongs to the technical field of experimental instruments, in particular to a chromatography column clamping device. Background Art

[0002] The chromatography column is the main body in gel chromatography technology, usually made of glass tube or plexiglass tube. The chromatography column needs to be fixed when in use. In the laboratory, the chromatography column is usually clamped and fixed with a clamp, and the clamp is divided into elastic clamp and non-elastic clamp. The elastic clamp clamps the chromatography column through the elastic force of the spring, which is only suitable for chromatography columns of a single diameter. The non-elastic clamp clamps and loosens the chromatography column by twisting the screw to control the distance between a pair of clamping claws. It can adapt to chromatography columns of multiple sizes, but it is not easy to control the tightening degree when tightening the screw. The rigid clamping can easily crush the chromatography column, so it is necessary to improve it. Utility Model Content

[0003] In order to solve the above-mentioned defects of the prior art, the present application provides a chromatography column clamping device, which clamps chromatography columns of various sizes by twisting a screw, and the spring between the clamping piece and the push plate can play a buffering role, effectively avoiding crushing the chromatography column.

[0004] In order to achieve the above purpose, the utility model adopts the following technologies:

[0005] A chromatography column clamping device, comprising:

[0006] A horizontal plate is provided with a pair of connecting holes, each of which is rotatably connected to a screw rod, a pair of symmetrically arranged clamping plates are provided between the pair of screw rods, the pair of clamping plates are arranged at intervals in the length direction of the screw rods, and one of the clamping plates is fixed to the horizontal plate for clamping the chromatography column;

[0007] A push plate is arranged at a distance from another clamping plate on one side of the horizontal plate. A plurality of springs are arranged between the push plate and the other clamping plate. A plurality of accommodating holes corresponding to the positions of the springs are opened on the push plate. Guide columns are passed through the accommodating holes. The guide columns pass through the springs and are connected to the other clamping plate. One end of the screw rod passes through the horizontal plate and is threadedly connected to the push plate.

[0008] Furthermore, a proximity sensor is provided between the push plate and the other clamping piece, an alarm is provided on the outside of the push plate, and the proximity sensor is connected to the alarm. When the distance between the push plate and the other clamping piece reaches a preset value, the proximity sensor controls the alarm to sound an alarm.

[0009] Furthermore, the clamping piece and the push plate are both V-shaped, and the concave side of a clamping piece connected to the horizontal plate is arranged toward the other clamping piece, and the concave sides of the other clamping piece and the push plate are both arranged toward the clamping piece connected to the horizontal plate.

[0010] Furthermore, the other ends of the two screw rods pass through the horizontal plate and are connected to a gear, and the two gears are meshed and connected in a transmission belt.

[0011] Furthermore, the other end of a screw rod is connected to a rocker.

[0012] Furthermore, a clamp is provided on the top and the bottom of the cross plate.

[0013] The beneficial effects of the utility model are:

[0014] 1. The chromatography columns of various sizes can be clamped by twisting the screw, and the spring between the clamping piece and the push plate can play a buffering role, effectively avoiding the crushing of the chromatography column.

[0015] 2. The gears and transmission belts work together, so you only need to rotate one screw to drive the other screw to rotate synchronously.

[0016] 3. The proximity sensor and the alarm can work together to sound an alarm when the spring is compressed to a certain extent, reminding the operator to stop turning the screw to prevent the clamping piece from clamping the chromatography column too hard. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the overall structure of the device according to the embodiment of the present application.

[0018] Figure 2 This is a stereoscopic diagram of the overall structure of the device according to an embodiment of the present application from another perspective.

[0019] Figure 3 It is a top view of the device according to an embodiment of the present application.

[0020] Figure numerals: horizontal plate-1, screw rod-2, clamping plate-3, push plate-4, spring-401, guide column-402, proximity sensor-5, alarm-6, gear-7, transmission belt-8, rocker-9, clamp-10. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings, but the embodiments described in the utility model are only part of the embodiments of the utility model, rather than all the embodiments.

[0022] The present application embodiment provides a chromatography column clamping device, such as Figure 1-Figure 3 As shown, it includes a horizontal plate 1, a push plate 4, a clamping plate 3, etc.

[0023] Specifically, a pair of connecting holes are opened on the horizontal plate 1, and a screw 2 is rotatably connected in each of the connecting holes. There is a pair of clamping plates 3, which are arranged between the pair of screws 2. The pair of clamping plates 3 are symmetrically arranged in the length direction of the screw 2, and one of the clamping plates 3 is fixed to the horizontal plate 1 for clamping the chromatography column; the push plate 4 is arranged at intervals on the side of the other clamping plate 3 away from the horizontal plate 1, and a plurality of springs 401 are arranged between the push plate 4 and the other clamping plate 3. The push plate 4 is opened with a plurality of accommodating holes corresponding to the positions of the springs 401, and guide columns 402 are penetrated in the accommodating holes, and the guide columns 402 pass through the springs 401 and are connected to the other clamping plate 3, and one end of the screw 2 passes through the horizontal plate 1 and is threadedly connected to the push plate 4.

[0024] During actual use, the device is fixed on a supporting rod, and then the two screws 2 are turned to control a pair of clamping pieces 3 to open, and then the chromatography column is placed between the pair of clamping pieces 3, and then the two screws 2 are turned in the opposite direction to control the pair of clamping pieces 3 to close together. When the two clamping pieces 3 are in contact with the chromatography column, the clamping piece 3 close to the push plate 4 is pushed by the chromatography column and squeezes the spring 401, moving toward the push plate 4. When the spring 401 is compressed to a certain extent, stop turning the screw 2 to complete the fixation of the chromatography column, which can avoid the clamping piece 3 from directly clamping the chromatography column rigidly, which can easily crush the chromatography column.

[0025] For details, see Figure 1 A clamp 10 is provided at the top and bottom of the horizontal plate 1, and the device can be quickly fixed to the support rod through the clamp 10. For more details, refer to Figure 1 , Figure 2 The clamping piece 3 and the push plate 4 are both V-shaped, and the inwardly concave side of one clamping piece 3 connected to the horizontal plate 1 is arranged toward the other clamping piece 3, and the inwardly concave sides of the other clamping piece 3 and the push plate 4 are both arranged toward the clamping piece 3 connected to the horizontal plate 1. Compared with the arc-shaped clamping piece 3, the V-shaped clamping piece 3 has more contact positions with the surface of the chromatography column when clamping chromatography columns of different diameters, and the clamping effect is better.

[0026] Preferably, see Figure 1 A proximity sensor 5 is provided between the push plate 4 and the other clamping piece 3, and an alarm 6 is provided on the outside of the push plate 4. The proximity sensor 5 is connected to the alarm 6. When the distance between the push plate 4 and the other clamping piece 3 reaches a preset value, the proximity sensor 5 controls the alarm 6 to alarm. The proximity sensor 5 cooperates with the alarm 6 to sound an alarm when the spring 401 is compressed to a certain extent, that is, when the distance between the push plate 4 and the other clamping piece 3 reaches a preset value, an alarm is sounded to remind the operator to stop rotating the screw 2 to prevent the clamping piece 3 from clamping the chromatography column too much.

[0027] Preferably, see Figure 1 , Figure 3The other ends of the two screw rods 2 pass through the horizontal plate 1 and are connected to a gear 7, and the two gears 7 are meshed and connected in a transmission belt 8. The gear 7 and the transmission belt 8 cooperate, and only one screw rod 2 needs to be rotated to drive the other screw rod 2 to rotate synchronously. Specifically, the other end of one screw rod 2 is connected to a rocker 9 to facilitate the rotation of the screw rod 2.

[0028] The above are only some of the embodiments listed in this application and are not intended to limit this application.

Claims

1. A chromatography column clamping device, characterized in that: include: A transverse plate (1) is provided with a pair of connection holes, each of which is rotatably connected to a screw rod (2), a pair of symmetrically arranged clamping plates (3) are provided between the pair of screw rods (2), the pair of clamping plates (3) are arranged at intervals in the length direction of the screw rods (2), and one of the clamping plates (3) is fixed to the transverse plate (1) for clamping the chromatography column; A push plate (4) is arranged at a distance from another clamping plate (3) on a side away from the horizontal plate (1), and a plurality of springs (401) are arranged between the push plate (4) and the other clamping plate (3). The push plate (4) is provided with a plurality of accommodating holes corresponding to the positions of the springs (401), and guide columns (402) are passed through the accommodating holes. The guide columns (402) pass through the springs (401) and are connected to the other clamping plate (3). One end of the screw rod (2) passes through the horizontal plate (1) and is threadedly connected to the push plate (4).

2. A chromatography column clamping device according to claim 1, characterized in that: A proximity sensor (5) is provided between the push plate (4) and the other clamping plate (3), an alarm (6) is provided on the outer side of the push plate (4), and the proximity sensor (5) is connected to the alarm (6). When the distance between the push plate (4) and the other clamping plate (3) reaches a preset value, the proximity sensor (5) controls the alarm (6) to sound an alarm.

3. A chromatography column clamping device according to claim 1, characterized in that: The clamping piece (3) and the push plate (4) are both V-shaped, and the inwardly concave side of one clamping piece (3) connected to the transverse plate (1) is arranged toward the other clamping piece (3), and the inwardly concave sides of the other clamping piece (3) and the push plate (4) are both arranged toward the one clamping piece (3) connected to the transverse plate (1).

4. A chromatography column clamping device according to claim 1, characterized in that: The other ends of the two screw rods (2) pass through the horizontal plate (1) and are connected to a gear (7), and the two gears (7) are meshed and connected in a transmission belt (8).

5. A chromatography column clamping device according to claim 4, characterized in that: The other end of a screw rod (2) is connected to a rocker (9).

6. A chromatography column clamping device according to claim 1, characterized in that: A clamp (10) is provided at the top and bottom of the transverse plate (1).

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