Pressurizing device for chromatographic column
By introducing a long screw and pressure relief valve system driven by a servo motor into the column pressurization device, the slow and uniform pressurization and overpressure protection of the column are achieved, and the diffusion disorder caused by excessive pressure in the prior art is solved. , ensuring the successful completion of the experiment.
Patent Information
- Application Number
- CN202420670840.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-03
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-04-03
AI Technical Summary
The existing chromatographic column pressurization device lacks overpressure protection function, which leads to diffusion disorder when the applied pressure is too high, and the analysis substances cannot be effectively separated, resulting in the experiment failure.
A pressurization device for chromatographic columns including fixed plate, tube body structure and pressurized structure is designed. The long screw is driven to rotate through a servo motor, and the moving block moves on the surface of the long screw, pushing the block to move backwards, compressing air and Pressure through the catheter, a pressure relief valve is used to prevent excessive pressure and achieve slow and uniform pressure.
It effectively prevents excessive pressure inside the chromatographic column, ensures the accuracy of experimental results, avoids pressure instability caused by manual pressurization, and ensures effective separation of analytical substances.
Smart Images
Figure CN222189213U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of chromatography experimental equipment, in particular to a pressurizing device for a chromatography column. Background Art
[0002] Chromatographic columns play a core role in chromatographic analysis. The specific type of stationary phase filled in the chromatographic column can interact with different components in the sample, thereby separating them according to the affinity, chemical reaction or physical adsorption between these components and the stationary phase. Chromatographic columns can help scientists perform qualitative and quantitative analysis based on parameters such as retention value and peak area of each component in the sample. When doing chromatographic experiments, it is generally necessary to pressurize the chromatographic column, but the existing pressurizing device does not have the function of overpressure protection. When the pressure applied by the pressurizing device is too high, it causes diffusion disorder and cannot effectively separate the substances to be analyzed, which leads to the failure of the experiment. Therefore, those skilled in the art provide a pressurizing device for a chromatographic column to solve the problems raised in the above background technology. Utility Model Content
[0003] The utility model aims to provide a pressurizing device for a chromatographic column to solve the problems raised in the above background technology.
[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0005] A pressurizing device for a chromatographic column comprises a fixing plate, a fixing structure, a tubular structure and a pressurizing structure, wherein the front end of the fixing plate is provided with a fixing structure, the interior of the fixing structure is provided with a tubular structure, the front end of the fixing structure is provided with a pressurizing structure, the fixing structure comprises: a square through slot, a fixing plate, a square through slot and a support rod, a square through slot is provided through the middle of the front side surface of the fixing plate, a support rod is provided around the front side surface of the fixing plate, that is, the number of the support rods is four groups, the four groups of support rods are commonly provided with a fixing plate, a fixing plate, and a fixed plate symmetrically positioned with respect to the fixing plate, a square through slot is provided through the middle of the front side surface of the fixing plate, the square through slot is the same size as the square through slot and the positions of the two are symmetrical.
[0006] Preferably, the tube structure comprises: a fixed pressurized tube, a containing space, a pressurized tube, a conduit and a pressure relief valve, and the square through groove 2 and the square through groove 1 penetrate each other and are fixedly provided with the fixed pressurized tube.
[0007] Preferably, a receiving space is provided through the middle of the front surface of the fixed pressurized tube body, a pressurized tube is provided in the middle of the rear surface of the fixed pressurized tube body, and the pressurized tube is connected with the interior of the receiving space inside the fixed pressurized tube body.
[0008] Preferably, a conduit is provided at the front end of the left surface of the pressurized pipe, the interior of the conduit is connected with the interior of the pressurized pipe, and a pressure relief valve is fixedly installed on the surface of the conduit.
[0009] Preferably: the pressurizing structure includes: support rod 2, fixed plate 3, servo motor, long screw, limit plate, moving block, connecting rod 1, connecting rod 2, blocking block and close-fitting colloid, and support rod 2 is arranged around the front side surface of fixed plate 2, that is, the number of support rod 2 is four groups.
[0010] Preferably: the four groups of support rods 2 are commonly provided with a fixed plate 3 at one end away from the fixed plate 2, the fixed plate 3 is symmetrically positioned with the fixed plate 2, a servo motor is provided in the middle of the front surface of the fixed plate 3, and a long screw is provided at the output end of the servo motor.
[0011] Preferably, one end of the long screw rod away from the servo motor passes through the fixing plate 3 and is located in the middle of the accommodating space, and a limiting plate is fixedly mounted on the rear surface of the long screw rod.
[0012] Preferably: a moving block is provided on the surface of the long screw and at the front end located inside the accommodating space, a connecting rod 2 is provided at the left lower end on the rear surface of the moving block, and a connecting rod 1 is provided at the right upper end on the rear surface of the moving block, and the sizes of connecting rod 1 and connecting rod 2 are the same.
[0013] Preferably, a blocking block is provided at one end of the connecting rod 1 and the connecting rod 2 away from the moving block. The blocking block is symmetrical to the moving block and is located inside the accommodating space.
[0014] Preferably, the blocking block is located at the rear side of the limiting plate, and a close-contact colloid is provided on both upper and lower surfaces and left and right surfaces of the blocking block, and the side of the close-contact colloid away from the blocking block contacts the inner surface of the accommodating space.
[0015] Compared with the prior art, the beneficial effects of the utility model are as follows: the end of the pressurizing tube away from the fixed pressurizing tube body is connected to the chromatographic column that needs to be pressurized, and the long screw is driven to rotate by the servo motor. The rotation of the long screw causes the moving block on the surface of the long screw to move on the surface of the long screw under the limitation of the accommodating space, and the moving block moves backward on the surface of the long screw and pushes the blocking block to move backward through the connecting rod 1 and the connecting rod 2. The function of the limit plate is to prevent the moving block from falling off the surface of the long screw when it moves backward on the surface of the long screw, and the air inside the accommodating space is compressed to the level of the air inside the accommodating space by the backward movement of the blocking block inside the accommodating space. The inside of the conduit is then pressurized on the chromatographic column through the conduit. When the pressure relief valve detects that the pressure inside the conduit is too high, the pressure is relieved through the pressure relief valve to prevent the pressure inside the chromatographic column from being too high and affecting the experimental results. The movement of the moving block on the surface of the long screw can also achieve slow and uniform pressurization of the chromatographic column, avoiding manual pressurization resulting in unstable pressurization pressure, excessive force or too slow pressure, and solving the above-mentioned problem. However, the existing pressurizing device does not have an over-pressure protection function. When the pressure applied by the pressurizing device is too high, diffusion disorder occurs, and the analyzed substances cannot be effectively separated, which leads to the failure of the experiment. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 The figure is a schematic diagram of the overall structure of a pressurizing device for a chromatographic column.
[0017] Figure 2 The present invention is a schematic diagram of the structure of a fixed structure in a pressurizing device for a chromatographic column.
[0018] Figure 3 The present invention is a schematic diagram of the structure of a tube body in a pressurizing device for a chromatographic column.
[0019] Figure 4 The present invention is a structural schematic diagram of the connection between a fixed structure and a tube structure in a pressurizing device for a chromatographic column.
[0020] Figure 5 The present invention is a schematic diagram showing the partial disassembly of the structure of a pressurizing device for a chromatographic column.
[0021] Figure 6 The present invention is a schematic diagram of the structure of a partial disassembly of a pressurizing structure in a pressurizing device for a chromatographic column.
[0022] In the figure: 1-fixed plate 1, 101-square through groove 1, 2-fixed plate 2, 201-square through groove 2, 3-support rod 1, 4-fixed pressurized tube body, 401-accommodating space, 5-pressurized tube, 6-conduit, 601-pressure relief valve, 7-support rod 2, 8-fixed plate 3, 9-servo motor, 901-long screw, 902-limiting plate, 10-moving block, 1001-connecting rod 1, 1002-connecting rod 2, 11-blocking block, 1101-closed colloid. DETAILED DESCRIPTION
[0023] In order to make the technical means, creative features, purpose and efficacy of the utility model easy to understand, the utility model is further described below in conjunction with the specific implementation methods. In the description of the utility model, it should be noted that the orientation or position relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense, for example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be a connection between the two elements. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0024] See also Figures 1 to 6In an embodiment of the utility model, a pressurizing device for a chromatographic column comprises a fixing plate 1, a fixing structure, a tubular structure and a pressurizing structure. The front end of the fixing plate 1 is provided with a fixing structure, the interior of the fixing structure is provided with a tubular structure, the front end of the fixing structure is provided with a pressurizing structure, the fixing structure comprises: a square through groove 101, a fixing plate 22, a square through groove 201 and a support rod 3. A square through groove 101 is provided through the middle of the front side surface of the fixing plate 1, and support rods 3 are provided around the front side surface of the fixing plate 1, that is, the number of support rods 3 is four groups, and the four groups of support rods 3 are commonly provided with a fixing plate 22 at one end away from the fixing plate 1, and the fixing plate 22 is symmetrical with the fixing plate 1. 2 is provided with a square through groove 201 in the middle of the front side surface, the square through groove 201 is the same size as the square through groove 101 and the positions of the two are symmetrical, the tube structure includes: a fixed pressurized tube body 4, a receiving space 401, a pressurized tube 5, a conduit 6 and a pressure relief valve 601, the square through groove 201 and the inside of the square through groove 101 are penetrated together and the fixed pressurized tube body 4 is fixedly provided, the receiving space 401 is provided in the middle of the front side surface of the fixed pressurized tube body 4, the pressurized tube 5 is provided in the middle of the rear side surface of the fixed pressurized tube body 4, the pressurized tube 5 is connected with the inside of the receiving space 401 in the fixed pressurized tube body 4, the front end of the left side surface of the pressurized tube 5 is provided with a conduit 6, the inside of the conduit 6 is connected with the inside of the pressurized tube 5 The parts are connected, a pressure relief valve 601 is fixedly installed on the surface of the conduit 6, and the pressurizing structure includes: a support rod 2 7, a fixed plate 3 8, a servo motor 9, a long screw 901, a limit plate 902, a moving block 10, a connecting rod 1001, a connecting rod 2 1002, a blocking block 11 and a close-fitting colloid 1101. Support rods 2 7 are arranged around the front side surface of the fixed plate 2, that is, the number of support rods 2 7 is four groups, and the four groups of support rods 2 7 are commonly provided with a fixed plate 3 8 at one end away from the fixed plate 2, and the positions of the fixed plate 3 8 and the fixed plate 2 2 are relatively symmetrical. A servo motor 9 is arranged in the middle of the front side surface of the fixed plate 3 8, and a long screw 901 is arranged at the output end of the servo motor 9. The end of the long screw 901 away from the servo motor 9 penetrates The fixing plate three 8 is located in the middle of the interior of the accommodating space 401, and a limiting plate 902 is fixedly installed on the rear side surface of the long screw 901. A moving block 10 is arranged on the surface of the long screw 901 and at the front end located inside the accommodating space 401. A connecting rod 2 1002 is arranged at the lower left end on the rear side surface of the moving block 10, and a connecting rod 1 1001 is arranged at the upper right end on the rear side surface of the moving block 10. The connecting rod 1 1001 and the connecting rod 2 1002 have the same size. A blocking block 11 is arranged at one end of the connecting rod 1 1001 and the connecting rod 2 1002 away from the moving block 10. The blocking block 11 is symmetrical with the moving block 10 and is located inside the accommodating space 401. The blocking block 11 is located on the rear side of the limiting plate 902.The upper and lower surfaces and the left and right surfaces of the block 11 are both provided with a close contact colloid 1101, and the side of the close contact colloid 1101 away from the block 11 is in contact with the inner surface of the accommodation space 401.
[0025] The working principle of the utility model is:
[0026] The utility model relates to a pressurizing device for a chromatographic column. In a specific use process, first, one end of a pressurizing tube away from a fixed pressurizing tube body is connected to the chromatographic column to be pressurized, and a servo motor is used to drive a long screw to rotate. The rotation of the long screw causes a moving block on the surface of the long screw to move on the surface of the long screw under the limitation of an accommodating space, and the moving block moves backward on the surface of the long screw and pushes the blocking block to move backward through a connecting rod one and a connecting rod two. The function of the limit plate is to prevent the moving block from falling off the surface of the long screw when moving backward on the surface of the long screw. The blocking block moves backward inside the accommodating space, thereby compressing the air inside the accommodating space into the inside of a conduit, and then pressurizing the chromatographic column through the conduit. When the pressure relief valve detects that the pressure inside the conduit is too high, the pressure is relieved through the pressure relief valve to prevent the pressure inside the chromatographic column from being too high, which affects the experimental results. The movement of the moving block on the surface of the long screw can also achieve slow and uniform pressurization of the chromatographic column, thereby avoiding the situation where the pressurization pressure is unstable and too strong or too slow due to manual pressurization.
[0027] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.
[0028] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. A pressurizing device for a chromatographic column, comprising a fixing plate (1), a fixing structure, a tubular structure and a pressurizing structure, characterized in that: The front end of the fixing plate 1 (1) is provided with a fixing structure, the interior of the fixing structure is provided with a tube structure, the front end of the fixing structure is provided with a pressurizing structure, the fixing structure comprises: a square through slot 1 (101), a fixing plate 2 (2), a square through slot 2 (201) and a support rod 1 (3), a square through slot 1 (101) is provided through the middle of the front side surface of the fixing plate 1 (1), and support rods 1 (3) are provided around the front side surface of the fixing plate 1 (1), that is, the number of support rods 1 (3) is four groups, and the four groups of support rods 1 (3) are provided with a fixing plate 2 (2) at one end away from the fixing plate 1 (1), the positions of the fixing plate 2 (2) and the fixing plate 1 (1) are symmetrical, and a square through slot 2 (201) is provided through the middle of the front side surface of the fixing plate 2 (2), and the square through slot 2 (201) is the same size as the square through slot 1 (101) and the positions of the two are symmetrical.
2. A chromatographic column pressurizing device according to claim 1, characterized in that: The tube structure comprises: a fixed pressurized tube body (4), a containing space (401), a pressurized tube (5), a conduit (6) and a pressure relief valve (601); the interior of the second square through groove (201) and the first square through groove (101) are penetrated together and the fixed pressurized tube body (4) is fixedly arranged thereon.
3. A chromatographic column pressurizing device according to claim 2, characterized in that: A receiving space (401) is provided in the middle of the front surface of the fixed pressurized tube body (4), and a pressurized tube (5) is provided in the middle of the rear surface of the fixed pressurized tube body (4). The pressurized tube (5) is connected to the interior of the receiving space (401) inside the fixed pressurized tube body (4).
4. A chromatographic column pressurizing device according to claim 2, characterized in that: A conduit (6) is provided at the front end of the left surface of the pressurizing pipe (5), the interior of the conduit (6) is connected to the interior of the pressurizing pipe (5), and a pressure relief valve (601) is fixedly installed on the surface of the conduit (6).
5. A chromatographic column pressurizing device according to claim 1, characterized in that: The pressurizing structure comprises: a second support rod (7), a third fixing plate (8), a servo motor (9), a long screw (901), a limiting plate (902), a moving block (10), a first connecting rod (1001), a second connecting rod (1002), a blocking block (11) and a close-fitting colloid (1101). The second support rods (7) are arranged around the front side surface of the second fixing plate (2), that is, the number of the second support rods (7) is four groups.
6. A chromatographic column pressurizing device according to claim 5, characterized in that: The four groups of support rods 2 (7) are provided with a fixed plate 3 (8) at one end away from the fixed plate 2 (2), and the fixed plate 3 (8) is symmetrical with the fixed plate 2 (2). A servo motor (9) is provided in the middle of the front side surface of the fixed plate 3 (8), and a long screw (901) is provided at the output end of the servo motor (9).
7. A chromatographic column pressurizing device according to claim 5, characterized in that: The end of the long screw (901) away from the servo motor (9) passes through the fixing plate three (8) and is located in the middle of the accommodating space (401), and a limiting plate (902) is fixedly mounted on the rear surface of the long screw (901).
8. A chromatographic column pressurizing device according to claim 5, characterized in that: A moving block (10) is provided on the surface of the long screw rod (901) and at the front end located inside the accommodating space (401); a connecting rod 2 (1002) is provided at the lower left end on the rear surface of the moving block (10); and a connecting rod 1 (1001) is provided at the upper right end on the rear surface of the moving block (10); the connecting rod 1 (1001) and the connecting rod 2 (1002) have the same size.
9. A chromatographic column pressurizing device according to claim 5, characterized in that: The connecting rod 1 (1001) and the connecting rod 2 (1002) are both provided with a blocking block (11) at one end away from the moving block (10); the blocking block (11) is symmetrical to the moving block (10) and is located inside the accommodating space (401).
10. A chromatographic column pressurizing device according to claim 5, characterized in that: The blocking block (11) is located at the rear side of the limiting plate (902), and a close-contact colloid (1101) is provided on both the upper and lower surfaces and the left and right surfaces of the blocking block (11), and the side of the close-contact colloid (1101) away from the blocking block (11) is in contact with the inner surface of the accommodating space (401).