Chromatographic column mounting device of chromatographic instrument

Abstract

The utility model provides a chromatographic column mounting device of a chromatographic instrument, which belongs to the technical field of chromatographic column supports and is characterized in that a transverse plate is fixedly mounted on a support frame, a support shaft extending forwards is fixedly mounted on the transverse plate, and a cylindrical sleeve in sliding connection with the support shaft is sleeved on the peripheral surface of the support shaft; three adjusting plates A are fixedly installed on the peripheral face of the cylindrical sleeve at equal intervals, the inner ends of connecting rods are hinged to the front end and the rear end of one adjusting plate A, the outer ends of the connecting rods are hinged to the front end and the rear end of an adjusting plate B, and the adjusting plate B is fixedly connected to the outer arc plate through a connecting block. A sliding plate is fixedly installed on the supporting frame and corresponds to the adjusting plate A, a sliding block is slidably connected into the sliding plate, one end of the sliding block is fixedly connected with the connecting block, and a limiting block A is fixedly installed at the other end of the sliding block; the utility model can effectively solve the technical problem that the applicable chromatographic columns have fewer specifications as the chromatographic columns are inconvenient to adjust according to the sizes of the chromatographic columns.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of chromatographic column support, specifically, relate to a chromatographic column mounting device of chromatograph. BACKGROUND

[0002] Chromatography is a separation and analysis method, and separation is the core. Therefore, the chromatographic column responsible for separation is the heart of the chromatographic system. The chromatographic column needs to be placed in a specific support during use and storage.

[0003] Application No.: CN202222405247.4 (Authorized Announcement No.: CN219201486U) The utility model discloses a chromatographic column of meteorological chromatograph, including fixed ring, and four installation mechanisms are equipped on the outside of the fixed ring, and the top of the installation mechanism is installed with support frame near the side of the center of circle, and four support frames are internally equipped with same chromatographic column, and the support frame includes two fixed blocks, and the inside of the fixed block is installed with telescopic column, and the inside of the telescopic column is equipped with telescopic strip.

[0004] The above-mentioned patent is not convenient for adjusting the overall ring diameter of the chromatographic column according to the size of the chromatographic column, resulting in fewer applicable chromatographic column specifications. UTILITY MODEL CONTENT

[0005] The main purpose of the utility model is to provide a chromatographic column mounting device of chromatograph, which can effectively solve the technical problems of inconvenient adjustment according to the size of the chromatographic column, resulting in fewer applicable chromatographic column specifications.

[0006] The utility model is implemented as follows:

[0007] The utility model provides a chromatographic column mounting device of chromatograph, has support frame, wherein, fixed mounting has the transverse board on the support frame, fixed mounting has the support shaft that extends to the front on the transverse board, the outer circumferential surface of support shaft is equipped with the cylindrical sleeve that is connected with sliding, the outer circumferential surface of cylindrical sleeve is equidistant fixed mounting has three adjusting plate A, the inner end of connecting rod is hinged on the front and rear two ends of one adjusting plate A, the outer end of connecting rod is hinged on the front and rear two ends of adjusting plate B, adjusting plate B is fixedly connected on outer arc plate through connecting block.

[0008] Fixed mounting has a sliding plate on the support frame in the corresponding position of adjusting plate A, slidingly connected with sliding block in the sliding plate, one end of sliding block is fixedly connected with connecting block, the other end of sliding block is fixedly installed with limiting block A.

[0009] On the basis of the above technical scheme, the chromatographic column mounting device of the utility model can also be improved as follows:

[0010] Further, a rotating sleeve is sleeved on the support shaft, and the support shaft and the rotating sleeve are fixedly connected through a thrust ball bearing.

[0011] Further, an inner thread is formed on an inner circumferential surface of the rotating sleeve, and an outer thread is formed on a front end of the support shaft, and the rotating sleeve is threadedly connected with the front end of the support shaft.

[0012] Further, a rotating groove is formed on the connecting block at the upper end, a screw rod is rotatably connected in the rotating groove, a threaded block is threadedly connected to the screw rod, and an outer wall of the threaded block is close to an inner wall of the rotating groove.

[0013] Further, a moving groove that is in communication with the rotating groove is formed on the outer arc plate at the upper end, a limiting block B is slidably connected in the moving groove, and the limiting block B is fixedly connected with the threaded block.

[0014] Compared with the prior art, the chromatographic column mounting device for the chromatograph has the beneficial effects that: the device can mount chromatographic columns of various diameters, the outer arc surface of the outer arc plate abuts against the chromatographic column, and the chromatographic column is prevented from shaking during storage or use; and the forward and backward movement of the chromatographic column is avoided through the limiting block B that is slidably connected. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope, and other related drawings can also be obtained by those skilled in the art without any creative effort on the premise of not paying creative effort.

[0016] Figure 1 It is a side view of the overall structure of the chromatographic column mounting device for the chromatograph.

[0017] Figure 2 It is a front view of the outer arc plate and other structures of the chromatographic column mounting device for the chromatograph.

[0018] Figure 3 It is a front view of the support frame of the chromatographic column mounting device for the chromatograph.

[0019] Figure 4 It is a first angle axonometric view of Figure 2

[0020] Figure 5 It is a second angle axonometric view of Figure 2

[0021] In the drawings, the components represented by the numbers are listed as follows: ​​

[0022] 1, support frame; 10, cross plate; 11, sliding plate; 12, sliding block; 13, limiting block A; 14, positioning screw hole; 2, support shaft; 20, external thread; 21, cylindrical sleeve; 22, adjusting plate A; 23, connecting rod; 24, adjusting plate B; 25, outer arc plate; 26, connecting block; 3, rotating sleeve; 30, internal thread; 31, thrust ball bearing; 32, rotating rod; 41, rotating groove; 42, screw rod; 43, threaded block; 44, moving groove; 45, limiting block B; 46, rotating block. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0024] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0025] It should be noted that: similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0026] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0027] In addition, the terms "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" are only used for descriptive purpose and cannot be understood as indicating or implying relative importance or implying the number of the technical features indicated. Therefore, the features defined with "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise explicitly specified.

[0028] Embodiment 1

[0029] As Figures 1-5 shown, the utility model provides a chromatographic column mounting device of chromatograph, has support frame 1, wherein support frame 1 is fixedly installed with horizontal plate 10, horizontal plate 10 is fixedly installed with the support shaft 2 of forward extension, the outer circumferential surface of support shaft 2 is sleeved with the cylindrical sleeve 21 of sliding connection, three adjusting plates A22 are fixedly installed on the outer circumferential surface of cylindrical sleeve 21 at equal intervals, the front and rear two ends of an adjusting plate A22 are both hinged with the inner end of connecting rod 23, the outer end of connecting rod 23 is hinged on the front and rear two ends of adjusting plate B24, and adjusting plate B24 is fixedly connected on outer arc plate 25 through connecting block 26;

[0030] Support frame 1 is fixedly installed with one sliding plate 11 at the position corresponding to adjusting plate A22, sliding plate 11 is slidably connected with sliding block 12, one end of sliding block 12 is fixedly connected with connecting block 26, and the other end of sliding block 12 is fixedly installed with limiting block A13.

[0031] Optionally, in the above technical solution, the support shaft 2 is also sleeved with a rotating sleeve 3, and the support shaft 2 and the rotating sleeve 3 are fixedly connected through a thrust ball bearing 31.

[0032] Optionally, in the above technical solution, an inner thread 30 is formed on the inner circumferential surface of the rotating sleeve 3, and an outer thread 20 is formed on the front end of the support shaft 2, and the rotating sleeve 3 is threadedly connected with the front end of the support shaft 2.

[0033] Optionally, in the above technical solution, a rotating groove 41 is formed on the connecting block 26 at the upper end, a screw rod 42 is rotatably connected in the rotating groove 41, a threaded block 43 is threadedly connected to the screw rod 42, and the outer wall of the threaded block 43 is close to the inner wall of the rotating groove 41.

[0034] Optionally, in the above technical solution, a moving groove 44 is formed on the outer arc plate 25 at the upper end and is in communication with the rotating groove 41, a limiting block B45 is slidably connected in the moving groove 44, and the limiting block B45 is fixedly connected with the threaded block 43.

[0035] Further, the two connecting blocks 26 and the outer arc plate 25 at the lower end can be provided with the same slidingly connected limiting block B45 as the connecting block 26 and the outer arc plate 25 at the upper end.

[0036] Wherein, the outer end of the screw rod 42 is fixedly installed with a rotating block 46, facilitating rotation of the screw rod 42;

[0037] Wherein, the outer circumferential surface of the rotating sleeve 3 is fixedly installed with a rotating rod 32, facilitating rotation of the rotating sleeve 3.

[0038] Wherein, one end of the thrust ball bearing 31 is connected with the cylindrical sleeve 21, and the other end is connected with the rotating sleeve 3, and the structure of the thrust ball bearing 31 can make the rotation of the rotating sleeve 3 not affect the cylindrical sleeve 21, and the movement of the rotating sleeve 3 can drive the cylindrical sleeve 21 to move.

[0039] Wherein, a circular groove is formed in the side wall of the moving groove 44 which is rotationally connected with the screw rod 42, and the end of the screw rod 42 is rotationally connected with the circular groove through a rolling bearing, the inner circumferential surface of the rolling bearing is connected with the outer circumferential surface of the screw rod 42, and the outer circumferential surface of the rolling bearing is connected with the circular groove.

[0040] Wherein, when the adjusting plate B 24 is closest to the adjusting plate A 22 (i.e. the rotating sleeve 3 is located at the front end of the stroke), the diameter of the circle formed by the three outer arc plates 25 is the smallest, and at this time it can be fitted with the smallest diameter chromatographic column; when the adjusting plate B 24 is farthest from the adjusting plate A 22 (i.e. the rotating sleeve 3 is located at the last end of the stroke), the diameter of the circle formed by the three outer arc plates 25 is the largest, and at this time it can be fitted with the largest diameter chromatographic column; that is, the range of the chromatographic column diameter suitable for the device is limited by the position of the outer arc plate 25.

[0041] Wherein, the four corners of the support frame 1 are provided with through-positioning screw holes 14, and the support frame 1 is installed in the chromatograph by passing the positioning screw holes 14 with bolts, and after the support frame 1 is fixed, the chromatographic column is installed.

[0042] Working principle:

[0043] In the initial state, the rotating sleeve 3 is located at the front end of the stroke, the adjusting plate B 24 is fitted with the adjusting plate A 22, and the moving groove 44 and the limiting block B 45 are also located at the front end of the stroke;

[0044] When in use, the chromatographic column is sleeved on the outer arc plate 25, and the rotating sleeve 3 is rotated clockwise to make it move backward along the support shaft 2 through the external thread 20 and the internal thread 30, and the rotating movement of the rotating sleeve 3 drives the cylindrical sleeve 21 to move backward through the thrust ball bearing 31, and the backward movement of the cylindrical sleeve 21 drives the inner end of the connecting rod 23 to move backward, and under the action of the hinge, the outer end of the connecting rod 23 moves outward, and the adjusting plate B 24 drives the outer arc plate 25 to move outward, so that the diameter of the outer arc plate 25 becomes larger, and until the outer arc surfaces of the three outer arc plates 25 are in contact with the chromatographic column, avoiding the chromatographic column from shaking;

[0045] Then the rotating block 46 is twisted clockwise to drive the screw rod 42 to rotate in place in the rotating groove 41, the rotation of the screw rod 42 makes the threaded block 43 move linearly in the rotating groove 41, thereby driving the limiting block B 45 to move along the moving groove 44 until the limiting block B 45 abuts against the side surface of the chromatographic column, preventing the chromatographic column from sliding forward and backward.

[0046] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A chromatographic column mounting device for a chromatograph having a support frame (1), characterized in that, The support frame (1) is fixedly installed with a horizontal plate (10), the horizontal plate (10) is fixedly installed with a support shaft (2) extending forward, the outer circumferential surface of the support shaft (2) is sleeved with a cylindrical sleeve (21) in sliding connection therewith, the outer circumferential surface of the cylindrical sleeve (21) is fixedly installed with three adjusting plates A (22) at equal intervals, the front and rear ends of an adjusting plate A (22) are both hingedly connected with the inner ends of connecting rods (23), the outer ends of the connecting rods (23) are both hingedly connected with the front and rear ends of an adjusting plate B (24), the adjusting plate B (24) is fixedly connected with an outer arc plate (25) through a connecting block (26); The support frame (1) is fixedly installed with a slide plate (11) at a position corresponding to the adjusting plate A (22), the slide plate (11) is slidably connected with a sliding block (12), one end of the sliding block (12) is fixedly connected with the connecting block (26), the other end of the sliding block (12) is fixedly installed with a limiting block A (13).

2. A chromatographic column mounting device for a chromatographic apparatus according to claim 1, wherein, The support shaft (2) is also sleeved with a rotating sleeve (3), the support shaft (2) and the rotating sleeve (3) are fixedly connected through a thrust ball bearing (31).

3. A chromatographic column mounting device for a chromatographic apparatus according to claim 2, wherein, The inner circumferential surface of the rotating sleeve (3) is provided with an internal thread (30), the front end of the support shaft (2) is provided with an external thread (20), the rotating sleeve (3) is threadedly connected with the front end of the support shaft (2).

4. A chromatographic column mounting device for a chromatographic apparatus according to claim 1, wherein, The connecting block (26) at the upper end is provided with a rotating groove (41), the rotating groove (41) is rotatably connected with a screw rod (42), the screw rod (42) is threadedly connected with a threaded block (43), the outer wall of the threaded block (43) is close to the inner wall of the rotating groove (41).

5. A chromatographic column mounting device for a chromatographic apparatus according to claim 4, wherein, The outer arc plate (25) at the upper end is provided with a moving groove (44) in communication with the rotating groove (41), the moving groove (44) is slidably connected with a limiting block B (45), the limiting block B (45) is fixedly connected with the threaded block (43).

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