Adjustable chromatographic column convenient to clean

Abstract

The utility model discloses an adjustable chromatographic column convenient to clean, which relates to the technical field of chromatographic columns and comprises a column tube and a vertical rod, a first sealing cover and a connector are respectively mounted at the upper end and the lower end of the column tube, a second sealing cover is mounted at the lower end of the connector, a piston head is mounted in the column tube, and a piston rod is mounted in the piston head. A plurality of connecting rods are mounted at the upper end of the vertical rod; and a cleaning brush pad is installed on the outer side of the middle of the piston head, a pressing piece is installed in the piston head and used for driving the cleaning brush pad to be tightly pressed on the inner wall of the column pipe, a driving rod is fixed to the lower side of the middle of the piston head, and a connecting groove matched with the connecting rod is formed in the lower end of the driving rod. According to the adjustable chromatographic column convenient to clean, the cleaning brush pad can be tightly pressed on the inner wall of the column tube all the time through the arrangement of the pressing piece, the cleaning effect on the chromatographic column is improved, and meanwhile, the operation is simple, convenient and efficient under the cooperation of the vertical rod and the piston head.

Description

TECHNICAL FIELD

[0001] The utility model relates to chromatographic column technical field, concretely is a kind of adjustable chromatographic column of easy cleaning. BACKGROUND

[0002] Chromatographic column is composed of column tube, pressure cap, sleeve, sieve plate, joint, screw, etc., chromatographic column can be divided into packed column and open tube column two big categories, more metal or glass is made, there are straight pipe shape, coil pipe shape, U-shaped tube etc. shape. Liquid chromatography usually adopts packed column.

[0003] Chromatographic column is extremely easy to remain various impurities inside, thus needs to be cleaned, for example, in the patent application with the name of "a kind of adjustable chromatographic column of easy cleaning" with the authorization announcement number CN221788250U, the authorization announcement day is October 1, 2024, by rotating cleaning brush pad, the inner wall of column tube is cleaned in depth, better cleaning effect is achieved, and the packing residue under cleaning is moved to piston plate in groove a, and is moved upwards along with piston plate, and is discharged from the upper pipe opening of column tube, avoid packing residue to remain in the inner wall of column tube;However, in the above-mentioned device actual long time use process, the plane in contact with column tube is prone to wear condition, so that piston plate moves to column tube when cleaning, because not adhere to the inner wall of column tube, column tube inner wall is prone to have impurities, and cleaning effect is poor, thereby affecting the subsequent use of column tube.

[0004] Therefore, we propose a kind of adjustable chromatographic column of easy cleaning to solve the problems raised in the above. INVENTION CONTENTS

[0005] 1. The technical problem to be solved by the utility model:

[0006] The utility model aims at providing a kind of adjustable chromatographic column of easy cleaning to solve the problems in the above background art.

[0007] 2. Technical scheme:

[0008] To achieve the above object, the utility model provides the following technical scheme: a kind of adjustable chromatographic column of easy cleaning, including column tube and vertical rod, the upper and lower ends of the column tube are respectively installed with sealing cover one and connector, and the lower end of connector is installed with sealing cover two, and the inside of the column tube is installed with piston head, the upper end of the vertical rod is installed with several link rods;

[0009] The middle part outside of the piston head is installed with cleaning brush pad, and the inside of the piston head is installed with tight pressing piece, the tight pressing piece is used to drive cleaning brush pad to be tightly pressed in the inner wall of column tube, the middle part lower side of the piston head is fixed with drive rod, and the lower end of drive rod is provided with the link groove matched with link rod.

[0010] Further, the tight pressing piece comprises a rotating drum screw-mounted inside the lower end of the piston head, the upper end of the rotating drum is equiangularly provided with a plurality of ball rods, the ball rods are arranged one by one corresponding to the tight pressing rods, the tight pressing rods are movably arranged inside the piston head, a pressure spring is arranged between the tight pressing rods and the piston head, the ball rods extrude the tight pressing rods by rotating to drive the tight pressing rods to slide inside the piston head.

[0011] Through the above technical scheme, the tight pressing rods are restored to the original position under the action of the pressure spring when the tight pressing rods are not stressed.

[0012] Further, the side of the tight pressing rod close to the ball rod and the side of the tight pressing rod close to the cleaning brush pad are both designed in an arc structure.

[0013] Through the above technical scheme, the tight pressing rods are extruded by the ball rods after rotating.

[0014] Further, the connecting groove comprises a cavity and a groove, the cavity and the groove are in communication with each other, the connecting grooves are equiangularly distributed about the center of the driving rod, and the connecting grooves are one-to-one corresponding to the connecting rods.

[0015] Through the above technical scheme, the connecting rods are driven to extend into the connecting grooves from the cavity and then rotate to drive the protrusions to extend into the grooves.

[0016] Further, the connecting rod comprises a rod body and a protrusion, the rod body is fixed to the upper end of the vertical rod, the protrusion is fixed to one side of the upper end of the rod body, and the protrusion and the groove form a concave-convex matching structure.

[0017] Through the above technical scheme, the vertical rod drives the piston head to move up and down through the matching of the protrusion and the groove.

[0018] 3. Beneficial effects:

[0019] Compared with the prior art, the adjustable chromatographic column convenient to clean provided by the technical scheme has the advantages that the cleaning brush pad can be always tightly pressed against the inner wall of the column tube, the cleaning effect on the chromatographic column is improved, and the operation is simple, convenient and efficient under the cooperation of the vertical rod and the piston head, and the specific contents are as follows:

[0020] When the inside of the chromatographic column is cleaned, the sealing cover two is first removed, then the rotating drum at the bottom of the piston head is rotated, the rotating drum drives the ball rod to extrude the compression rod, the compression rod moves in the direction of the cleaning brush pad after being stressed, the cleaning brush pad is tightly attached to the inner wall of the column tube, so that the subsequent column tube inner wall is better cleaned, internal residual impurities are effectively removed, the accuracy and stability of subsequent use of the chromatographic column are ensured, then when the piston head needs to be operated to move, the connecting rod at the upper end of the vertical rod is inserted into the connecting groove of the driving rod, the connecting rod is rotated, the protruding block is caused to extend into the groove, through the concave-convex cooperation, the piston head can be driven to move up and down in the column tube by moving the vertical rod, and in the moving process, the cleaning brush pad tightly pressed against the inner wall of the column tube is used for cleaning operation on the inner wall of the column tube, and the piston head can be rotated by rotating the vertical rod, the cleaning effect on the inner wall is further improved, meanwhile, the piston head collects the filler residue in the inside of the column tube, avoids that the filler residue is left in the inside of the column tube, and is simple, efficient, time-saving and labor-saving. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a whole structure schematic view of the utility model;

[0022] Figure 2 It is a column tube inside structure schematic view of the utility model;

[0023] Figure 3 It is a piston head inside structure schematic view of the utility model;

[0024] Figure 4 It is a connecting groove elevation structure schematic view of the utility model;

[0025] Figure 5 It is a connecting rod side view structure schematic view of the utility model.

[0026] In the drawing: 1, column tube; 2, sealing cover one; 3, connecting head; 4, sealing cover two; 5, piston head; 6, driving rod; 7, cleaning brush pad; 8, compression part; 81, rotating drum; 82, ball rod; 83, compression rod; 84, pressure spring; 9, connecting groove; 91, cavity; 92, groove; 10, vertical rod; 11, connecting rod; 111, rod body; 112, protruding block. DETAILED DESCRIPTION

[0027] In order to facilitate the understanding of the utility model, the technical solutions in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0028] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0029] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0030] In the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing", "provided with" and the like should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium, or can be the communication inside two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances. Embodiment

[0031] Please refer to Figures 1-5 A kind of adjustable chromatographic column of easy cleaning, including column pipe 1 and vertical rod 10, the upper and lower ends of column pipe 1 are respectively installed with sealing cover one 2 and connecting head 3, and the lower end of connecting head 3 is installed with sealing cover two 4, and the inside of column pipe 1 is installed with piston head 5, the upper end of vertical rod 10 is installed with several link rods 11;Piston head 5's middle part outside is installed with cleaning brush pad 7, and the inside of piston head 5 is installed with tight pressing piece 8, and tight pressing piece 8 is used to drive cleaning brush pad 7 to be tightly pressed on the inner wall of column pipe 1, and the lower end of drive rod 6 is provided with the link groove 9 matched with link rod 11, which is fixed on the lower side of the middle part of piston head 5;Tight pressing piece 8 includes the rotating cylinder 81 of screwing in the inside of the lower end of piston head 5, the upper end of rotating cylinder 81 is installed with several ball rods 82 at equal angles, ball rod 82 is set one-to-one with tight pressing rod 83, and tight pressing rod 83 is movably installed in the inside of piston head 5, and pressure spring 84 is installed between tight pressing rod 83 and piston head 5, ball rod 82 is extruded to tight pressing rod 83 by rotating, and drives tight pressing rod 83 to slide in the inside of piston head 5;The side of tight pressing rod 83 close to ball rod 82 and the side of tight pressing rod 83 close to cleaning brush pad 7 are both arc-shaped structure design.

[0032] When the inside of the chromatographic column is cleaned, the sealing cover 4 is removed first, and then the rotating drum 81 at the bottom of the piston head 5 is rotated, the ball rod 82 is extruded to the compression rod 83, the compression rod 83 moves to the direction of the cleaning brush pad 7 after being stressed, and the cleaning brush pad 7 is tightly attached to the inner wall of the column tube 1, so that the subsequent inner wall of the column tube 1 can be better cleaned, the internal residual impurities can be effectively removed, and the accuracy and stability of the subsequent use of the chromatographic column are ensured.

[0033] The adapter groove 9 includes a cavity 91 and a groove 92, the cavity 91 and the groove 92 are communicated with each other, the adapter groove 9 is distributed at equal angles about the center of the driving rod 6, and the adapter groove 9 is one-to-one corresponding with the adapter rod 11; the adapter rod 11 includes a rod body 111 and a protrusion 112, the rod body 111 is fixed to the upper end of the vertical rod 10, the protrusion 112 is fixed to one side of the upper end of the rod body 111, and the protrusion 112 and the groove 92 form a concave-convex matching structure.

[0034] When the inner wall of the column tube 1 needs to be cleaned comprehensively, the adapter rod 11 at the upper end of the vertical rod 10 is inserted into the adapter groove 9 of the driving rod 6, and then the adapter rod 11 is rotated, so that the protrusion 112 extends into the groove 92, the cleaning effect of the inner wall is further improved through the concave-convex matching, the piston head 5 is driven to move up and down in the column tube 1 by moving the vertical rod 10, and the inner wall of the column tube 1 is cleaned by the cleaning brush pad 7 tightly pressed on the inner wall of the column tube 1 during the movement, and the piston head 5 collects the filler residue in the column tube 1, so that the filler residue is avoided to remain in the column tube 1, the operation is simple and efficient, time and labor are saved.

[0035] Working principle: when the adjustable chromatographic column convenient to clean is used, as shown in FIG. Figures 1-5 When cleaning is needed, the sealing cover 4 is removed first, and then the rotating drum 81 is rotated, so that the ball rod 82 is extruded to the compression rod 83, the compression rod 83 moves to the direction of the cleaning brush pad 7 after being stressed, and the cleaning brush pad 7 is tightly attached to the inner wall of the column tube 1, so that the internal residual impurities can be effectively removed, the accuracy and stability of the subsequent use of the chromatographic column are ensured, the adapter rod 11 at the upper end of the vertical rod 10 is inserted into the adapter groove 9 of the driving rod 6, and then the adapter rod 11 is rotated, so that the protrusion 112 extends into the groove 92, the piston head 5 is driven to move up and down in the column tube 1 and rotate through the concave-convex matching, and the inner wall of the column tube 1 is cleaned by the cleaning brush pad 7 during the movement of the piston head 5, so that the filler residue in the column tube 1 is better cleaned.

[0036] The contents not described in detail in the specification belong to the prior art known to those skilled in the art.

[0037] Although the utility model has been explained in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An adjustable chromatographic column that is easy to clean, characterized in that: It includes a column tube (1) and a vertical rod (10). The upper and lower ends of the column tube (1) are respectively equipped with a sealing cap (2) and a connector (3), and the lower end of the connector (3) is equipped with a sealing cap (4). The inside of the column tube (1) is equipped with a piston head (5), and the upper end of the vertical rod (10) is equipped with several connecting rods (11). A cleaning brush pad (7) is installed on the outer side of the middle part of the piston head (5), and a clamping member (8) is installed inside the piston head (5). The clamping member (8) is used to drive the cleaning brush pad (7) to press tightly against the inner wall of the column tube (1). A drive rod (6) is fixed on the lower side of the middle part of the piston head (5), and a connecting groove (9) that cooperates with the connecting rod (11) is opened at the lower end of the drive rod (6).

2. The adjustable chromatographic column for easy cleaning according to claim 1, characterized in that: The clamping component (8) includes a rotating cylinder (81) threaded inside the lower end of the piston head (5). Several ball rods (82) are installed at equal angles on the upper end of the rotating cylinder (81). The ball rods (82) are arranged in a one-to-one correspondence with the clamping rods (83). The clamping rods (83) are movably installed inside the piston head (5). A pressure spring (84) is installed between the clamping rods (83) and the piston head (5). The ball rods (82) squeeze the clamping rods (83) by rotating, causing the clamping rods (83) to slide inside the piston head (5).

3. The adjustable chromatographic column for easy cleaning according to claim 2, characterized in that: The side of the clamping rod (83) near the cue stick (82) and the side of the clamping rod (83) near the cleaning brush pad (7) are both designed with an arc shape.

4. The adjustable chromatographic column for easy cleaning according to claim 1, characterized in that: The connecting groove (9) includes a cavity (91) and a groove (92), the cavity (91) and the groove (92) are interconnected, the connecting groove (9) is distributed at equal angles about the center of the drive rod (6), and the connecting groove (9) corresponds to the connecting rod (11).

5. The adjustable chromatographic column for easy cleaning according to claim 1, characterized in that: The connecting rod (11) includes a rod body (111) and a protrusion (112). The rod body (111) is fixed to the upper end of the vertical rod (10), and the protrusion (112) is fixed to one side of the upper end of the rod body (111). The protrusion (112) and the groove (92) form a concave-convex mating structure.

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