Chromatographic column positioning seat

Abstract

The utility model discloses a chromatographic column positioning seat which comprises a base, a connecting body, a fixing ring, a gear, a rotating knob, a movable strip and a clamping assembly, the fixing ring is arranged above the base, the fixing ring is connected with the base through the connecting body, the fixing ring is in a circular ring shape, at least three through grooves are formed in the fixing ring, and the rotating knob is arranged in the through grooves. Through grooves are formed in the inner side wall and the outer side wall of the fixing ring, each through groove corresponds to a long-straight-strip-shaped movable strip, the movable strips penetrate through the corresponding through grooves and point to the circle center of the fixing ring, clamping assemblies are arranged at the ends, close to the circle center of the fixing ring, of the movable strips, and the interior of a ring body of the fixing ring is hollow. The hollow area in the ring body of the fixing ring is communicated with the through groove; according to the utility model, the gear, the rotating knob, the movable strip and the clamping component are matched, so that the clamping component can synchronously move and clamp the chromatographic column, and the positioning seat is simple in structure and relatively convenient to operate.

Description

Technical Field

[0001] This utility model relates to the technical field of chromatographic column positioning seats, and in particular to the technical field of chromatographic column positioning seats. Background Technology

[0002] A chromatographic column consists of a column tube, pressure cap, ferrule (sealing ring), sieve plate (filter), connector, screws, etc.; it can be divided into two main categories: packed columns and open tubular columns; they are mostly made of metal or glass; and come in shapes such as straight tube, coil, and U-tube; liquid chromatography usually uses packed columns.

[0003] Existing patent CN 212989267 U discloses a positioning fixture for chromatographic column packing, including a main body and a handle. A dryer is installed in the middle of the inner side of the bottom end of the main body, and a storage drawer is installed on the side of the main body near the central axis. An installation column is installed at the upper front end of the main body, and a sliding sleeve is provided on the outer wall of the installation column. A first clamp is fixed on the side of the sliding sleeve away from the main body and away from the central axis, and a retaining sleeve is provided on the outer wall of the first clamp. A fixing screw is provided inside the retaining sleeve. This device uses a second clamp to fix the chromatographic column and adjusts the position of the second clamp according to the difference in chromatographic column models. However, the structure of this device is complex, and the types of chromatographic columns that can be positioned and fixed are still limited. Summary of the Invention

[0004] The purpose of this invention is to solve the problems in the prior art by proposing a chromatographic column positioning seat, which allows for convenient positioning of the chromatographic column and has a simple structure and is easy to use.

[0005] To achieve the above objectives, this utility model proposes a chromatographic column positioning seat, including a base, a connecting body, a fixing ring, gears, a rotating knob, movable bars, and a clamping assembly. A fixing ring is located above the base, and the fixing ring is connected to the base via a connecting body. The fixing ring is circular and has at least three through slots, each open on both the inner and outer walls of the fixing ring. Each through slot corresponds to a long, straight movable bar that passes through the corresponding through slot and points towards the center of the fixing ring. A clamping assembly is located at the end of the movable bar near the center of the fixing ring. The interior of the fixing ring is hollow, and the hollow area inside the fixing ring is connected to the through slots. Two meshing gears are located between two adjacent movable bars, installed inside the fixing ring. Each gear is close to one movable bar. The sidewall of the movable bar includes a rack that meshes with the adjacent gear. A rotating knob is installed on one end face of the fixing ring, and the rotating knob is connected to one of the gears inside the fixing ring. The rotating knob and the connected gear are on the same axis.

[0006] Preferably, the connecting body is a vertically arranged telescopic rod.

[0007] Preferably, the base is provided with a storage box and a dryer.

[0008] Preferably, the through grooves are evenly distributed on the fixing ring.

[0009] Preferably, the through groove has guide grooves on its two opposite sidewalls, the guide grooves are parallel to the length direction of the movable strip, and the movable strip has guide strips that correspond one-to-one with the guide grooves, the guide strips being embedded in the guide grooves.

[0010] Preferably, the clamping assembly consists of a mounting frame and rollers. There are two mounting frames, which are fixed to the end of the movable strip near the center of the fixed ring. Rollers are mounted on the mounting frames, and the rollers are parallel to the central axis of the fixed ring. The distance between the two rollers and the central axis of the fixed ring is equal.

[0011] The beneficial effects of this utility model are as follows: By coordinating gears, rotating knobs, movable bars, and clamping components, this utility model enables the clamping components to move synchronously and clamp the chromatographic column. The positioning seat has a simple structure and is easy to operate. The rollers allow the clamping components to better clamp the chromatographic column, ensuring reliable clamping and preventing failure.

[0012] The features and advantages of this utility model will be described in detail through embodiments and accompanying drawings. Attached Figure Description

[0013] Figure 1 This is a front view of the chromatographic column positioning seat of this utility model;

[0014] Figure 2 This is a partial schematic diagram of the fixing ring of the chromatographic column positioning seat of this utility model.

[0015] In the diagram: 1-base, 2-fixed ring, 3-moving strip, 10-connector, 11-storage box, 12-dryer, 20-through groove, 21-guide groove, 25-gear, 26-rotation knob, 31-guide strip, 35-mounting bracket, 36-roller. Detailed Implementation

[0016] Example 1:

[0017] See Figure 1 , Figure 2 The present invention relates to a chromatographic column positioning seat, comprising a base 1, a connecting body 10, a fixing ring 2, a gear 25, a rotating knob 26, a movable bar 3, and a clamping assembly. A fixing ring 2 is provided on the top of the base 1, and the fixing ring 2 is connected to the base 1 by a connecting body 10.

[0018] The fixing ring 2 is circular and has at least three through slots 20. The through slots 20 are open on both the inner and outer walls of the fixing ring 2. Each through slot 20 corresponds to a long, straight movable strip 3. The movable strip 3 passes through the corresponding through slot 20 and points towards the center of the fixing ring 2. A clamping component is provided at the end of the movable strip 3 near the center of the fixing ring 2. The inside of the ring body of the fixing ring 2 is hollow and the hollow area inside the ring body of the fixing ring 2 is connected to the through slots 20. Two meshing gears 25 are provided between two adjacent movable strips 3. The gears 25 are installed inside the ring body of the fixing ring 2. The two gears 25 are close to one movable strip 3 respectively. The side wall of the movable strip 3 includes a rack that meshes with the adjacent gear 25. A rotating knob 26 is installed on one end face of the fixing ring 2. The rotating knob 26 is connected to one of the gears 25 inside the fixing ring 2. The rotating knob 26 and the connected gear 25 are located on the same axis.

[0019] To make the height of the fixing ring 2 adjustable, the connecting body 10 is a vertically arranged telescopic rod.

[0020] The base 1 is equipped with a storage box 11 and a dryer 12.

[0021] The through grooves 20 are evenly distributed on the fixing ring 2, and the number of through grooves 20 is preferably 4.

[0022] Example 2:

[0023] To ensure that the movable strip 3 does not deviate during movement, guide grooves 21 are provided on two opposite side walls of the through groove 20. The guide grooves 21 are parallel to the length direction of the movable strip 3. The movable strip 3 is provided with guide strips 31 that correspond one-to-one with the guide grooves 21. The guide strips 31 are embedded in the guide grooves 21.

[0024] Example 3:

[0025] To ensure the stability of the column clamping and the versatility of the positioning seat, the clamping assembly consists of a mounting frame 35 and rollers 36. There are two mounting frames 35, which are fixed to the end of the movable strip 3 near the center of the fixed ring 2. The rollers 36 are mounted on the mounting frames 35. The rollers 36 are parallel to the central axis of the fixed ring 2, and the distance between the two rollers 36 and the central axis of the fixed ring 2 is equal.

[0026] The working process of this utility model:

[0027] In operation, the chromatographic column positioning seat of this utility model places the chromatographic column into the fixing ring 2, and then rotates the rotating knob 26. Rotating the knob 26 drives the gear 25 connected to it to rotate. The gear 25 drives other gears 25 and the movable bar 3 to move through the meshing relationship between various components. The clamping component on the movable bar 3 clamps the chromatographic column.

[0028] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the protection scope of the present invention.

Claims

1. A chromatographic column positioning seat, characterized in that: The assembly includes a base (1), a connector (10), a fixing ring (2), a gear (25), a rotating knob (26), a movable bar (3), and a clamping assembly. The base (1) is provided with a fixing ring (2) on top. The fixing ring (2) is connected to the base (1) by a connector (10). The fixing ring (2) is circular and has at least three through slots (20). The through slots (20) are open on both the inner and outer walls of the fixing ring (2). Each through slot (20) corresponds to a long, straight movable bar (3). The movable bar (3) passes through the corresponding through slot (20) and points towards the center of the fixing ring (2). The end of the movable bar (3) closest to the center of the fixing ring (2) is... A clamping assembly is provided. The ring body of the fixed ring (2) is hollow inside. The hollow area inside the ring body of the fixed ring (2) is connected to the through groove (20). Two meshing gears (25) are provided between two adjacent movable bars (3). The gears (25) are installed inside the ring body of the fixed ring (2). The two gears (25) are close to one movable bar (3) respectively. The side wall of the movable bar (3) includes a rack that meshes with the adjacent gear (25). A rotating knob (26) is installed on one end face of the fixed ring (2). The rotating knob (26) is connected to one of the gears (25) inside the fixed ring (2). The rotating knob (26) and the connected gear (25) are located on the same axis.

2. The chromatographic column positioning holder as described in claim 1, characterized in that: The connecting body (10) is a vertically installed telescopic rod.

3. The chromatographic column positioning holder as described in claim 1, characterized in that: The base (1) is provided with a storage box (11) and a dryer (12).

4. The chromatographic column positioning holder as described in claim 1, characterized in that: The through grooves (20) are evenly distributed on the fixing ring (2).

5. The chromatographic column positioning holder as described in claim 1, characterized in that: The through groove (20) has guide grooves (21) on its two opposite side walls. The guide grooves (21) are parallel to the length direction of the movable strip (3). The movable strip (3) has guide strips (31) that correspond one-to-one with the guide grooves (21). The guide strips (31) are embedded in the guide grooves (21).

6. The chromatographic column positioning holder as described in claim 1, characterized in that: The clamping assembly consists of a mounting frame (35) and rollers (36). There are two mounting frames (35). The mounting frame (35) is fixed at the end of the movable strip (3) near the center of the fixed ring (2). The rollers (36) are mounted on the mounting frame (35). The rollers (36) are parallel to the central axis of the fixed ring (2). The distance between the two rollers (36) and the central axis of the fixed ring (2) is equal.

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