CN204582610U - A kind of chromatographic column with maintenance mechanism - Google Patents

Abstract

The utility model discloses a chromatographic column with a maintenance mechanism. In the chromatographic column, the telescopic rod used for receiving the column tube is arranged in a double-segment telescopic structure, and the column tube is connected to the interrupted rod body. A hook with a variable position, when the hook is connected to the top of the column head, it can hook down the upper end piece of the column tube to prevent the column head from moving downward relative to the upper end piece of the column tube; when the hook is connected to the top of the upper end piece of the column tube by screws , which can hook the column head downwards to prevent the column head from moving upward relative to the upper end piece of the column tube. The chromatographic column of the utility model can easily separate the column tube from the base, so as to maintain it conveniently and quickly.

Description

A chromatographic column with a maintenance mechanism

technical field

The utility model relates to a chromatographic column, in particular to a chromatographic column with a maintenance mechanism.

Background technique

Patent Application No. 200580037990.5 discloses a chromatographic column structure. However, if the column diameter of the chromatographic column of this structure is greater than or equal to 450mm, it is difficult to allow forklifts or There is an air vehicle, so it is urgent to set up a corresponding maintenance mechanism on the chromatographic column to realize the easy and fast separation of the column tube from the upper end piece and the base of the column tube.

Utility model content

The purpose of the utility model is: to solve the above problems, provide a chromatographic column with a maintenance mechanism, which can easily separate the column tube from the base, so as to maintain it conveniently and quickly.

The technical solution of the utility model is: a chromatographic column with a maintenance mechanism, comprising:

base,

Two telescopic rods vertically arranged on the base,

a column tube supported on the base, connected to one of the telescopic rods, and able to rotate horizontally around the telescopic rod,

an upper end piece of the column tube fixedly connected to the top of the column tube,

The cross arm fixedly connected between the top ends of the two telescopic rods,

a number of lifting connecting rods vertically passed through the cross arm and capable of moving up and down,

The connecting frame that fixedly connects the upper ends of these lifting links together,

The column heads that connect the upper ends of these lifting links together,

a threaded rod that is vertically passed through the cross arm and whose upper end is rotatably connected to the connecting frame; and

a motor fixedly installed on the cross arm and connected to the screw rod to drive the screw rod to move up and down;

The telescopic rod is a two-stage pull-out telescopic structure composed of an upper rod and a lower rod, wherein the lower rod is fixed on the base, the upper rod is fixed on the cross arm, and the column tube is connected with the The lower rods are connected, and the connecting piece can not only move up and down relative to the lower rods, but also can rotate horizontally around the lower rods. The upper rods and the lower rods are provided with corresponding first positioning pins for fixing the relative position between the two. hole, the lower rod is provided with a second positioning pin hole for preventing the connecting piece from moving downward;

It also includes at least three hooks, the bottom and top of the upper end piece of the column tube are provided with screw holes for connecting the hooks, and the top of the column head is also provided with screw holes for connecting the hooks; when the hooks When it is connected to the top of the column head by screws, it can hook the upper end piece of the column tube downward to prevent the column head from moving downward relative to the upper end piece of the column tube; when the hook is connected to the top of the upper end piece of the column tube by screws, it can The column head is hooked down to prevent the column head from moving upward relative to the upper end piece of the column tube.

On the basis of the above-mentioned technical solutions, the utility model also includes the following preferred solutions:

A detachable limiting link is connected between the cross arm and the upper end piece of the column tube.

The bottom of the base is provided with four walking casters in a rectangular four-point distribution.

The walking casters are universal wheels.

There are three elevating connecting rods, and the three elevating connecting rods are distributed symmetrically at three points in an equilateral triangle, and the screw rod is arranged in the center of the three elevating connecting rods.

There are two hooks.

The utility model has the advantages that: the chromatographic column of the utility model can easily separate the column tube (with the upper end piece of the column tube) from the base, so as to maintain it conveniently and quickly.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments. The accompanying drawings in the following description are only some embodiments of the utility model. Those of ordinary skill in the art can also obtain other drawings based on these drawings without any creative effort.

Fig. 1 is the schematic diagram of the three-dimensional structure of the chromatographic column in the normal working state in the embodiment of the utility model;

Fig. 2 is the front view of the chromatographic column in the normal working state in the embodiment of the utility model;

3 to 7 are demonstration diagrams of the maintenance process of the chromatographic column in the embodiment of the present invention;

Fig. 8 is a schematic structural diagram of the hook in the embodiment of the present invention;

Among them: 1-base, 2-telescopic rod, 2a-upper rod, 2b-lower rod, 3-column tube, 4-column tube upper end piece, 5-cross arm, 6-lifting link, 7-connecting frame, 8 -column head, 9-screw mandrel, 10-motor, 11-hook, 12-limiting connecting rod, 13-traveling caster, 14-connector.

Detailed ways

The above solution will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are used to illustrate the utility model and not limit the scope of the utility model. The implementation conditions used in the examples can be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not indicated are usually the conditions in routine experiments.

Figures 1 to 8 show a specific embodiment of the chromatographic column with a maintenance mechanism of the present invention. Similar to the structure of the traditional chromatographic column, the chromatographic column also includes:

a base 1,

Two telescopic rods 2 vertically arranged on the base,

a column tube 3 supported on the base and connected to one of the telescopic rods and capable of rotating horizontally around the telescopic rod,

The upper end piece 4 of the column tube fixedly connected to the top of the column tube,

The cross arm 5 fixedly connected between the top ends of the two telescopic rods,

A plurality of lifting links 6 vertically passed through the cross arm and capable of moving up and down,

The connecting frame 7 fixedly connecting the upper ends of these lifting links together,

The column head 8 that the upper ends of these lifting links are fixedly connected together,

a threaded rod 9 that is vertically passed through the cross arm and whose upper end is rotatably connected with the connecting frame; and

A motor 10 that is fixedly installed on the cross arm and is connected with the screw rod to drive the screw rod to rotate so as to move the screw rod up and down.

The key improvement of this embodiment is that the telescopic rod 2 is a two-stage pull-out telescopic structure composed of an upper rod 2a and a lower rod 2b, wherein the lower rod 2b is fixed on the base 1, and the upper rod 2a is fixed on On the cross arm 5, the column tube 3 is connected with the lower rod 2b through a connecting piece 14, the connecting piece 14 can not only move up and down relative to the lower rod 2b, but also can rotate horizontally around the lower rod 2b, and the upper rod 2a and The lower rod 2b is provided with a corresponding first positioning pin hole for fixing the relative position between the two, and the lower rod 2b is provided with a second positioning pin hole for preventing the connecting member 14 from moving downward. It also includes at least three hooks 11 (in this example, specifically four, for the convenience of drawing, only two are shown in the figure), and the bottom and top of the upper end piece 4 of the column tube are provided with holes for connecting the hooks 11. screw holes, the top of the column head 8 is also provided with a screw hole for connecting the hook 11 . When the hook 11 is connected to the top of the column head 8 by screws, it can hook down the upper end piece 4 of the column tube to prevent the column head from moving downward relative to the upper end piece 4 of the column tube; When the upper end piece 4 of the column tube is on the top, it can hook down the column head 8 to prevent the column head 8 from moving upward relative to the upper end piece 4 of the column tube.

A detachable limiting link 12 is connected between the cross arm 5 and the upper end piece 4 of the column tube.

Referring again to Figures 1 to 7, the maintenance process of this chromatographic column in this embodiment is introduced as follows:

a. Under normal circumstances, the chromatographic column is in the state shown in Figure 1 and Figure 2, and the limit connecting rod 12 is connected between the cross arm 5 and the upper end piece 4 of the column tube to avoid fixing the vertical position of the cross arm 5 , to prevent it from moving up or down, the two hooks 11 are connected to the bottom of the column tube upper end piece 4 with screws. The telescopic rod 2 shrinks in length under the action of gravity of the components, and the column tube 3 moves down to be made on the base 1 . In this example, the column tube 3 is a transparent structure, so the hook 11 in FIG. 1 is visible.

b. When the chromatographic column needs to be maintained, first remove the limit link 12 connected between the cross arm 5 and the upper end piece 4 of the column tube, then remove the hook 11 from the bottom of the upper end piece 4 of the column tube, and place The removed hook 11 is fixed on the top of the column head 8 with screws, and the hook 11 is hung on the upper end piece 4 of the column tube downwards, so as to stop the column head 8 from moving downward. At this point the chromatographic column is in the state shown in Figure 3.

c. Turn on the motor 10. Driven by the motor 10, the screw 9 rotates in the forward direction, so that the screw moves downward relative to the cross arm 5, because the hook 11 hangs downward on the upper end piece 4 of the column tube to prevent the column head 8 moves downward relative to the upper end piece 4 of the column tube, and the lifting connecting rod 6 cannot move down. In this way, the cross arm 5 will move upward relative to the lead screw 9, thereby drawing the upper rod 2a upwards for a certain distance (the telescopic rod becomes longer), and then insert the latch into the first positioning pin of the upper rod 2a and the lower rod 2b hole, so as to fix the relative position of the two up and down. At this point the chromatographic column is in the state shown in Figure 4.

d. Then remove the hook 11 from the top of the column head 8, and fix the removed hook 11 on the top of the upper end piece 4 of the column tube with screws, and make the hook 11 hang down on the column head 8, so as to prevent the column head 8 from moving upward . At this point the chromatographic column is in the state shown in Figure 5.

e. Turn on the motor 10, and under the drive of the motor 10, the screw rod 9 makes a reverse rotation (opposite to the above-mentioned "forward direction", the two rotations are opposite to each other) and rotates, so that the screw rod 9 moves upward relative to the cross arm 5 , the lead screw 9 further drives the column head 8 to move upward through the connecting frame 7 and the lifting connecting rod 6, and the column head 8 then drives the column tube upper end piece 4 and the column tube 3 to move upward, and the connecting piece 14 moves upward for a certain distance relative to the lower rod 2b, and then Another set of latches is inserted into the second positioning pin hole of the lower rod 2b, thereby preventing the connecting piece 14 from moving downward, and also preventing the column tube 3 from moving downward, so that the column tube 3 stays at a position away from the base 1 . At this time, the bottom of the column tube 3 is separated from the base 1 and no downward pressure is applied to the base 1 , and the chromatographic column is in the state shown in FIG. 6 .

e. Remove the hook 11 on the top of the upper end piece 4 of the column tube, and rotate the column tube 3 horizontally so as to turn it out from between the two telescopic rods, so that the maintenance of the chromatographic column can be performed very conveniently. At this point the chromatographic column is in the state shown in Figure 7.

In order to be able to move the position of the chromatographic column very conveniently, four walking casters 13 in a rectangular four-point distribution are arranged on the bottom of the base 1 in this example, and the walking casters 13 adopt universal wheels.

In this example, there are three elevating connecting rods 6 , and the three elevating connecting rods 6 are distributed symmetrically at three points in an equilateral triangle, and the screw rod 9 is arranged at the center of the three elevating connecting rods 6 .

Certainly, the above-mentioned embodiments are only for illustrating the technical conception and characteristics of the present utility model, and its purpose is to allow people to understand the content of the utility model and implement it accordingly, and not to limit the protection scope of the utility model. All equivalent transformations or modifications made according to the spirit of the main technical solutions of the utility model shall fall within the protection scope of the utility model.

Claims (6)

1. A chromatographic column with a maintenance mechanism, comprising: base(1), Two telescopic rods (2) vertically arranged on the base, a column tube (3) supported on the base, connected to one of the telescopic rods, and able to rotate horizontally around the telescopic rod, The upper end piece (4) of the column tube fixedly connected to the top of the column tube, The cross arm (5) fixedly connected between the top ends of the two telescopic rods (2), Several lifting links (6) vertically passed through the cross arm and capable of moving up and down, The connecting frame (7) that the upper ends of these lifting links are fixedly connected together, The column head (8) that the upper ends of these lifting links are fixedly connected together, a threaded rod (9) that is vertically passed through the cross arm and whose upper end is rotatably connected with the connecting frame; and a motor (10) fixedly installed on the cross arm and connected to the screw rod to drive the screw rod to rotate up and down, It is characterized by: The telescopic rod (2) is a two-stage pull-out telescopic structure consisting of an upper rod (2a) and a lower rod (2b), wherein the lower rod (2b) is fixed on the base (1), and the upper rod ( 2a) fixed on the cross arm (5), the column tube (3) is connected with the lower rod (2b) through the connecting piece (14), and the connecting piece (14) can be connected with the lower rod (2b) Move up and down, and can rotate horizontally around the lower rod (2b). The upper rod (2a) and the lower rod (2b) are provided with corresponding first positioning pin holes for fixing the relative position between the two. The lower rod ( 2b) there is a second positioning pin hole for preventing the connecting piece (14) from moving downward; It also includes at least three hooks (11), the bottom and top of the column tube upper end piece (4) are provided with screw holes for connecting the hooks (11), and the top of the column head (8) is also provided with holes for Connect the screw hole of the hook (11); when the hook (11) is connected to the top of the column head (8) by screws, it can hook down the upper end piece (4) of the column tube to prevent the column head from The upper end piece of the tube moves downward; when the hook (11) is connected to the top of the upper end piece (4) of the column tube by screws, it can hook down the column head (8) to prevent the column head (8) from moving relative to the column. The upper end piece of the tube moves upward. 2. The chromatographic column with a maintenance mechanism according to claim 1, characterized in that: a detachable limit connecting rod (12) is connected between the cross arm (5) and the upper end piece (4) of the column tube. 3. The chromatographic column with a maintenance mechanism according to claim 1, characterized in that: the bottom of the base (1) is provided with four walking casters (13) distributed in a rectangular shape at four points. 4. The chromatographic column with a maintenance mechanism according to claim 3, characterized in that: the walking casters (13) are universal wheels. 5. The chromatographic column with a maintenance mechanism according to claim 1, characterized in that: there are three lifting links (6), and these three lifting links (6) are symmetrically distributed in an equilateral triangle at three points, so Said screw mandrel (9) is arranged in the very center of these three elevating connecting rods (6). 6. The chromatographic column with a maintenance mechanism according to claim 1, characterized in that there are four hooks (11) in total.