A chromatography column

Abstract

The present invention provides a chromatographic column, comprising: a chromatographic column tube, a filler and a baffle component, the chromatographic column tube comprises a cavity, the filler is filled in the cavity of the chromatographic column tube; a socket is provided on the side wall of the chromatographic column tube, and the baffle component can be inserted into the cavity or taken out from the cavity through the socket; the baffle component located in the cavity is used to block the filler in the axial direction of the chromatographic column tube, and the gas entering the chromatographic column tube can pass through the filler and the baffle component and flow out. Compared with the prior art, when replacing the sample to be tested, it is necessary to take out the glass wool from the openings at both ends of the chromatographic column, the operation process is cumbersome, and the chromatographic column tube will be damaged. The present invention adopts a method of providing a socket on the side of the chromatographic column tube and providing a detachable baffle component in the socket, which is convenient for replacing the baffle component and reduces the damage to the chromatographic column tube when replacing the baffle component.

Description

Technical Field

[0001] The invention relates to the field of preparation of chromatographic columns, in particular to a chromatographic column. Background Art

[0002] The application of chromatographic columns in chromatographic analysis is very common, and the preparation and use methods of chromatographic columns are relatively easy to master. There are a variety of fillers to choose from, which can meet the analysis requirements of general samples. However, if part of the sample is not completely vaporized or some impurities enter the chromatographic column, the service life of the chromatographic column will be shortened, and the analysis results will also be affected. Therefore, glass wool is stuffed into both ends of the existing chromatographic column tube to prevent the sample from vaporizing and backflowing, and to prevent some non-volatile impurities from reaching the chromatographic column. However, in actual use, the glass wool is not easy to replace when replacing the sample to be tested and cleaning the chromatographic column tube, which not only affects the work progress, but also increases the manpower and economic costs. In addition, the method of replacing glass wool in the prior art causes greater damage to the chromatographic column tube. In addition, in the prior art, the glass wool is easy to fall off when the air pressure in the column is too high. Summary of the invention

[0003] The invention provides a chromatographic column, which solves the problem in the prior art that glass wool is difficult to replace when replacing a sample to be tested or cleaning a chromatographic column tube.

[0004] In order to solve the above technical problems, the present invention provides a chromatographic column, comprising: a chromatographic column tube, a filler and a baffle component, the chromatographic column tube comprises a cavity, the filler is filled in the cavity of the chromatographic column tube; and, a socket is provided on the side wall of the chromatographic column tube, and the baffle component can be inserted into the cavity or taken out from the cavity through the socket; the baffle component located in the cavity is used to block the filler in the axial direction of the chromatographic column tube, and the gas passing through the chromatographic column tube can flow out through the filler and the baffle component.

[0005] Furthermore, the chromatographic column tube also includes two ports, at which blocking components are respectively arranged, and the blocking components located at the two ports of the chromatographic column tube are used to block the filler at the two ports to prevent the filler from flowing out of the chromatographic column tube.

[0006] Furthermore, in the axial direction of the chromatographic column tube, at least one barrier component is provided between the barrier components provided at the two ports, and the barrier component is used to separate the fillers located on both sides thereof.

[0007] Furthermore, the outer edge of the baffle component matches the sidewall profile of the cavity; the baffle component is inserted into the cavity through the socket along the axial direction of the chromatographic column tube, or the baffle component is inserted into the cavity through the socket along the radial direction of the chromatographic column tube.

[0008] Furthermore, the barrier component includes a foldable barrier component, which is in a folded state when inserted into the cavity through the socket; when in use, the foldable barrier component is in an unfolded state, and when the foldable barrier component is in the unfolded state, the outer edge of the foldable barrier component matches the side wall contour of the cavity.

[0009] Further, the foldable barrier component includes at least two barrier portions, and in the folded state, at least the two barrier portions partially overlap.

[0010] Furthermore, the barrier component is a sheet structure provided with through holes, or a screen box structure with a barrier built in.

[0011] Furthermore, the barrier component is a compressible foamed styrene board or a polyvinyl chloride board, which is in a compressed state when entering the cavity through the insertion port, and returns to its original state after entering the cavity.

[0012] Furthermore, the chromatographic column further comprises a fixing member. Specifically, the fixing member is used to fix the blocking member when the blocking member is located in the cavity.

[0013] Furthermore, a sealing member is provided at a position corresponding to the socket, and the sealing member is used to seal the chromatographic column tube when the baffle member is located in the cavity and / or when the baffle member is taken out of the cavity.

[0014] The beneficial effects of the present invention are:

[0015] The present invention provides a chromatographic column, comprising: a chromatographic column tube, a filler and a baffle component. More specifically, a socket is provided on the side of the chromatographic column tube, and the baffle component can be inserted into the cavity of the chromatographic column tube or taken out from the cavity of the chromatographic column tube through the socket. In the prior art, when replacing the sample to be tested or cleaning the chromatographic column tube, it is necessary to take out the glass wool from the openings at both ends of the chromatographic column. The operation process is cumbersome, and the chromatographic column tube will be damaged during the replacement process, affecting the service life of the chromatographic column. The chromatographic column provided by the present invention has an opening provided on the side of the chromatographic column, which is convenient for replacing the baffle component, and also reduces the damage to the chromatographic column tube caused by replacing the baffle component, thereby extending the service life of the chromatographic column.

[0016] Furthermore, the chromatographic column provided by the present invention also includes a fixing part. Compared with the method of filling glass wool through two ports of the chromatographic column in the prior art, this method is easy for the glass wool to loosen or even fall off when the air pressure in the chromatographic column tube is too high. As described above, the present invention adopts a socket provided on the side of the chromatographic column, inserts the baffle component into the cavity of the chromatographic column tube from the socket, and after the baffle component is inserted into the cavity of the chromatographic column tube, a fixing part is provided to fix the baffle component, thereby avoiding the problem that the baffle component is easy to fall off when the air pressure in the chromatographic column tube is too high. The fixing part can also prevent the vibration caused by the gap between the baffle component and the inner wall of the chromatographic column tube.

[0017] Furthermore, the chromatographic column provided by the present invention also includes a sealing member. When the baffle member is located in the cavity of the chromatographic column tube, and / or the baffle member is taken out of the cavity, the sealing member is used to seal the chromatographic column tube, thereby preventing the air pressure in the chromatographic column tube from changing significantly due to the insertion and / or removal of the baffle member, thereby affecting the analysis result.

[0018] Other features and corresponding beneficial effects of the chromatographic column provided by the present invention are described in the latter part of the specification, and it should be understood that at least part of the beneficial effects become obvious from the description in the specification of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic diagram of the three-dimensional structure of a first chromatographic column provided in an embodiment of the present invention;

[0021] Figure 2 A schematic diagram of the three-dimensional structure of a second chromatographic column provided in an embodiment of the present invention;

[0022] Figure 3 A schematic diagram of the three-dimensional structure of a third chromatographic column provided in an embodiment of the present invention;

[0023] Figure 4 A schematic diagram of the three-dimensional structure of a fourth chromatographic column provided in an embodiment of the present invention;

[0024] Figure 5 A partially enlarged schematic diagram of a baffle component of a sieve box structure provided in an embodiment of the present invention;

[0025] Figure 6A schematic diagram of the three-dimensional structure of a fifth chromatographic column provided in an embodiment of the present invention;

[0026] Figure 7 A partially enlarged schematic diagram of a stacked baffle component of a fifth chromatographic column provided in an embodiment of the present invention;

[0027] Figure 8 A partially enlarged schematic diagram of a scissor-type baffle component of a fifth chromatographic column provided in an embodiment of the present invention;

[0028] Fig. 9 A schematic diagram of the three-dimensional structure of a sixth chromatographic column provided in an embodiment of the present invention.

[0029] Figure markings: 1: chromatographic column tube; 12: cavity; 13: port; 2: filler; 3: barrier component; 301: barrier component; 302: barrier component; 303: barrier component; 304: barrier component; 305: barrier component; 306: barrier component; 307: barrier component; 308: barrier component; 32: sieve box; 321: barrier; 33: stacking barrier component; 331: movable push rod; 332: fixed push rod; 333: barrier part; 34: scissor-type barrier component; 341: handle; 342: barrier part; 4: socket; 51: small protrusion; 52: threaded member; 521: nut; 522: length extension end; 6: sealing member; 61: air bag; 62: sealing tape; 63: sealing ring. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the present embodiment clearer, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Generally, the components of the present embodiment described and shown in the drawings here can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0033] In the description of this embodiment, it should be noted that the orientation or position relationship indicated by the terms "upper", "inner", "bottom", etc. is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the invention is usually placed when used. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply 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 on the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0034] In the description of this embodiment, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connected", and "connected" should be understood in a broad sense, for example, it 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0035] The present invention will be further described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0036] In order to solve the problems in the prior art that the glass wool is not easy to replace when replacing the sample to be tested and cleaning the chromatographic column tube, and the glass wool is easy to fall off when the gas pressure in the chromatographic column is too high, this embodiment provides a chromatographic column. For details, please refer to Figure 1 The chromatographic column comprises: a chromatographic column tube 1, a filler 2 and a baffle 3. The chromatographic column tube 1 comprises a cavity 12. The filler 2 is filled in the cavity 12 of the chromatographic column tube 1 for separating gases to be analyzed and detected. In addition, a socket 4 is provided on the side wall of the chromatographic column tube 1. The baffle 3 can be inserted into the cavity 12 or taken out from the cavity 12 through the socket 4. More specifically, in a state of use, the baffle 3 located in the cavity 12 is used to block the filler 2 in the axial direction of the chromatographic column tube 1 to prevent the filler 2 from flowing out of the chromatographic column tube, and the gas passing through the chromatographic column tube 1 can flow out through the filler 2 and the baffle 3.

[0037] Furthermore, compared with the method of removing glass wool from both ends of the chromatographic column tube 1, the chromatographic column provided in this embodiment can fill the baffle component 3 into the cavity 12 of the chromatographic column tube 1 through the socket 4, or remove it from the cavity 12 of the chromatographic column tube 1. The setting of the socket 4 can facilitate the replacement of the baffle component 3, and requires fewer steps, is easier to operate, and also reduces the damage to the chromatographic column tube 1 caused by taking and placing the baffle component 3, thereby extending the service life of the chromatographic column tube 1.

[0038] For further information, see Figure 1, the chromatographic column tube 1 also includes two ports 13. Specifically, the chromatographic column tube 1 of the first chromatographic column provided in this embodiment is provided with a socket 4 at its two ports 13, and each socket 4 is correspondingly provided with a blocking component 301 and 302. It should be understood that the socket is provided on the side wall of the chromatographic column tube 1, and is an opening that passes through the cavity 12 and the side wall of the chromatographic column tube 1, and is used to take and place the blocking component 3. In the use state, the blocking components 301 and 302 located at the two ports 13 of the chromatographic column tube 1 are used to block the filler 2 at the two ports 13 to prevent the filler 2 from flowing out of the chromatographic column tube 1 from the upper and lower ports 13 of the chromatographic column tube 1.

[0039] It should be understood that the blocking component 3 can be set only at the upper port 13 of the chromatographic column tube 1. The blocking component 3 located at the upper port 13 of the chromatographic column tube 1 can prevent the filler 2 from flowing out from the upper end of the chromatographic column tube 1. At this time, the lower end of the chromatographic column tube 1 can be closed, and the filler 2 will not flow out from the lower end of the chromatographic column tube 1.

[0040] Also, see Figure 2 The second chromatographic column provided in this embodiment can also be provided with a baffle component 3 only at the lower end port 13 of the chromatographic column tube 1. The baffle component 3 located at the lower end port 13 of the chromatographic column tube 1 can prevent the filler 2 from flowing out from the lower end of the chromatographic column tube 1. At this time, the upper end of the chromatographic column tube 1 can be sealed, and the filler 2 will not flow out from the upper end of the chromatographic column tube. The setting mode of the baffle component 3 can be arbitrarily selected by those skilled in the art according to the actual situation, as long as it can satisfy that the gas can flow out through the filler 2 and the baffle component 3, and the filler 2 will not flow out from the ports 13 at both ends of the chromatographic column tube 1. The embodiment of the present invention will not explain this in detail.

[0041] For further information, see Figure 3 In the third chromatographic column provided in this embodiment, in the axial direction of the chromatographic column tube 1, at least one barrier component 304 is further provided between the barrier components 303 and 305 provided at the two ports 13 of the chromatographic column tube 1, and the barrier component 304 provided in the middle position is used to separate the fillers 2 located on both sides thereof. Because, if the filler 2 is composed of more than two substances, it is very likely that the substances will react with each other. Therefore, at least one barrier component 304 is provided to separate different fillers, so as to avoid the mutual reaction of more than two fillers 2 and thus affect the analysis results. Alternatively, when the same test object needs to be subjected to different analyses during analysis and detection, and the test object needs to react with different fillers, at least one barrier component 304 is provided between the barrier component 303 and the barrier component 304, so as to avoid the problem of multiple replacements of the filler 2 in actual use and cumbersome operation.

[0042] Furthermore, in order to prevent the gap between the baffle member 3 and the inner wall of the cavity 12 of the chromatographic column tube 1 from being too large, so that the filler 2 is exposed from the gap, the outer edge of the baffle member 3 is consistent with the side wall profile of the cavity 12. It should be noted that the side wall profile of the cavity 12 of the chromatographic column tube 1 can be circular, elliptical, polygonal or other arbitrary profiles, therefore, the outer edge of the baffle member 3 should be circular, elliptical, polygonal or other arbitrary profiles similar to the side wall profile of the cavity 12, and the shape or profile of the outer edge of the baffle member 3 can be selected according to the side wall profile of the cavity 12 of the chromatographic column tube 1, and this embodiment does not specifically limit this.

[0043] In addition, in this embodiment, the blocking component 3 can be inserted into the cavity 12 along the axial direction of the chromatographic column tube 1 through the socket 4, or the blocking component 3 can be inserted into the cavity 12 along the radial direction of the chromatographic column tube 1 through the socket 4. For details, please refer to Figure 4 In the fourth chromatographic column provided in this embodiment, the baffle component 3 can be inserted into the cavity 12 along the axial direction, radial direction or any direction of the chromatographic column tube through the socket, that is, the socket 4 on the side wall of the chromatographic column can be arranged in the axial direction, radial direction or any direction. If the baffle component 306 is inserted into the cavity 12 along the radial direction of the chromatographic column tube 1 through the socket 4, it is only necessary to insert the baffle component 306 along the socket 4; if the baffle component 307 is inserted into the cavity 12 along the axial direction of the chromatographic column tube 1 through the socket 4, the baffle component 307 should be rotated 90 degrees clockwise or counterclockwise to reach a position parallel to the radial direction of the cavity 12 of the chromatographic column tube 1; if the baffle component 308 is inserted into the cavity 12 through the socket 4 along a direction at a certain angle to the axial direction of the chromatographic column tube 1, the baffle component 308 should be rotated by a corresponding angle to reach a position parallel to the radial direction of the cavity 12 of the chromatographic column tube 1. Those skilled in the art can set the direction of the socket 4 arbitrarily, as long as the final state of the blocking component 3 inserted into the socket 4 is parallel to the radial direction of the cavity 12 of the chromatographic column tube 1 .

[0044] Furthermore, the barrier component in this embodiment may be a foldable barrier component. Figure 6 In the fifth chromatographic column provided in this embodiment, the barrier component 3 includes a foldable barrier component (not shown in the figure), and the foldable barrier component is in a folded state when inserted into the cavity 12 through the insertion port 4; more specifically, in the use state, the foldable barrier component is in an unfolded state, and when the foldable barrier component is in the unfolded state, the outer edge of the foldable barrier component is consistent with the side wall profile of the cavity 12. The specific structure of the foldable barrier component will be described later, so it is not marked in the figure.

[0045] It should be noted that when the foldable baffle component is in a folded state, it can enter the cavity 12 of the chromatographic column tube 1 through the socket 4 on the side wall of the chromatographic column tube 1; when in use, the baffle component 3 is unfolded, and the baffle component 3 when unfolded is consistent with the side wall contour of the cavity 12 of the chromatographic column tube 1. The side wall contour of the cavity 12 of the chromatographic column tube 1 can be circular, elliptical, polygonal or other arbitrary contours. Therefore, the outer edge of the baffle component 3 in the unfolded state should be a circular, elliptical, polygonal or other arbitrary contour that is similar to the side wall contour of the cavity 12. The setting of the baffle component 3 is selected according to the side wall contour of the cavity 12 of the chromatographic column tube 1, and this embodiment does not make any specific limitation on this.

[0046] Furthermore, the barrier component 3 includes at least two barrier portions, and in the folded state, at least the two barrier portions partially overlap.

[0047] Specifically, the foldable barrier component may be Figure 7 The stacking barrier component 33 shown. The stacking barrier component 33 includes two movable push rods 331, a fixed push rod 332 and at least two barrier parts 333. One end of the two movable push rods 331 is fixedly connected to the barrier part. When in use, the overlapping area of ​​each barrier part 333 can be reduced by pulling the two movable push rods 331. The other ends of the two movable push rods 331 are movably connected to the fixed push rod 332. One end of the fixed push rod 332 is fixedly connected to the barrier part, and the other end is movably connected to the two movable push rods 331. Every two barrier parts 333 are movably connected through a movable member. When the barrier component is in a folded state, one side of the barrier part is fixedly connected to the fixed push rod 332. Before use, the stacked baffle component 33 is adjusted to a folded state, and then the fixed push rod 332 drives the stacked baffle component 33 from the socket 4 on the side wall of the chromatographic column tube 1 into the cavity 12 of the chromatographic column tube 1. After the stacked baffle component 33 enters the cavity 12, the two movable push rods 332 are pulled to put the stacked baffle component 33 in an unfolded state. The outline of the unfolded baffle component matches the outline of the inner wall of the cavity of the chromatographic column tube 1, which can prevent the filling from flowing out of the chromatographic column tube.

[0048] For details, please see Figure 8 The foldable barrier component can also be a scissor-type barrier component 34. The force-applying end of the scissor-type barrier component 34 is a handle 341, and the force-receiving end is a barrier portion 342. Before use, the scissor-type barrier component 34 is adjusted to a folded state, and then enters the cavity 12 of the chromatographic column tube 1 from the socket 4 on the side wall of the chromatographic column tube 1. After entering, adjust the force-applying end handle 341, and the barrier portion 342 at the force-receiving end is unfolded. The outline of the unfolded scissor-type barrier component 34 is consistent with the inner wall outline of the cavity 12 of the chromatographic column tube 1, which can prevent the filler 2 from flowing out of the chromatographic column tube 1.

[0049] For further information, see Figure 1-4 , the barrier component 3 can be a sheet structure with through holes. Furthermore, the sheet structure with through holes can be a plastic sheet with through holes or an iron sheet with through holes. The sheet structure is simple and low in cost. Accordingly, by using the barrier component with a sheet structure, the gap of the socket 4 on the side wall of the chromatographic column tube 1 is small. During analysis and detection, the gas in the chromatographic column tube 1 will not leak out of the socket 4 in large quantities, which has little effect on the results of the analysis and detection.

[0050] For further information, see Figure 5 , the barrier component 3 can also be a box-type structure with a built-in barrier, which can be a sieve box 32 composed of two sieve plates and the side walls of the box body. The sieve plates can be plastic sheets or iron sheets, which are not specifically limited in this embodiment. Furthermore, the sieve box 32 has a built-in barrier 321, which can be glass wool, or other barrier 321 with a partitioning function and through which gas can pass, and the thickness of the box-type structure is 0.5 cm to 3 cm. Those skilled in the art can select and use the box-type barrier component 3 according to actual conditions without any creative work, which is not specifically limited in this embodiment. Since the sieve box 32 contains a barrier 321 inside, it has a good separation effect and is suitable for occasions of precision analysis.

[0051] For further information, see Fig. 9 In the sixth chromatographic column provided in this embodiment, the baffle component 3 can be a compressible foamed styrene plate or a polyvinyl chloride plate. The foamed styrene plate or the polyvinyl chloride plate is in a compressed state when entering the cavity 12 of the chromatographic column tube 1 through the socket 4. The foamed styrene plate or the polyvinyl chloride plate returns to its original state after entering the cavity 12 of the chromatographic column tube 1. The thickness of the restored foamed styrene plate or the polyvinyl chloride plate is greater than the axial height of the socket 4. Specifically, the foamed styrene plate or the polyvinyl chloride plate is compressible and can pass gas. The compressed volume can be folded, bent, or rolled up, which is not specifically limited in this embodiment. The foamed styrene plate or the polyvinyl chloride plate after the compressed volume can enter the cavity 12 through the socket 4. After fully entering, the foamed styrene plate or the polyvinyl chloride plate can quickly return to its original state due to the absence of external force, and fits tightly with the inner wall of the cavity 12 of the chromatographic column tube 1, and is clamped on the inner wall of the cavity 12.

[0052] It should be noted that the volume of the foamed styrene plate or polyvinyl chloride plate must be sufficient to be snapped onto the inner wall of the cavity of the chromatographic column tube 1 when in use. If the volume of the foamed styrene plate or polyvinyl chloride plate is too small when in use, it will slide down when entering the cavity of the chromatographic column tube 1 and will not play a blocking role. In order to prevent the foamed styrene plate or polyvinyl chloride plate from sliding down, a certain fixing liquid can be injected into the foamed styrene plate or polyvinyl chloride plate after the foamed styrene plate or polyvinyl chloride plate enters the chromatographic column tube 1, so that the foamed styrene plate or polyvinyl chloride plate is snapped into the cavity 12. The specific fixing method can be arbitrarily selected by those skilled in the art according to actual needs, and this embodiment does not make any specific limitation.

[0053] For further information, see Figure 1 and Figure 2 In the first and second chromatographic columns provided in this embodiment, a fixing piece is further provided at the corresponding position of the baffle member 3, and the fixing piece is used to fix the baffle member 3 when the baffle member 3 is inserted into the cavity 12 of the chromatographic column tube 1. The setting of the fixing piece avoids the problem of glass wool falling off due to excessive air pressure in the chromatographic column tube 1 in the prior art. The influence of the loose glass wool on the experimental results is minimized.

[0054] It is important to understand that see Figure 1 In the first chromatographic column provided in this embodiment, the fixing part can be a small protrusion 51 arranged on the side wall of the cavity 12. The small protrusion 51 and the socket 4 are located on the same cross section of the cavity 12 of the chromatographic column tube 1. When the baffle component 3 enters the cavity 12 of the chromatographic column tube 1 from the socket 4, the edge of the baffle component 3 is supported by the small protrusion 51 and will not loosen or slide off. The fixing part can also be two small protrusions 51 arranged on the side wall of the cavity of the chromatographic column tube 1. Specifically, the two small protrusions 51 are arranged in parallel along the axial direction of the cavity of the chromatographic column tube 1. The positions of the two small protrusions 51 are the same as the thickness of the baffle component 301. When the baffle component 301 enters the cavity 12 of the chromatographic column tube 1 through the socket 4, the edge is stuck between the two small protrusions 51, and the baffle component 301 is fixed and will not loosen or slide off.

[0055] Also, see Figure 2In the second type of chromatographic column provided in this embodiment, the fixing part can also be a threaded member 52, and the outer edge of the baffle part 3 is also provided with a length extension end 522, and the length extension end 522 is provided with a thread. After the baffle part 3 enters the cavity 12 of the chromatographic column tube 1 through the socket 4, the length extension end 522 with a thread extends out of the chromatographic column tube 1, and then the nut 521 is tightened on the length extension end to fix the baffle part 3. For the selection of the fixing part, those skilled in the art can select any of the above according to actual conditions. The setting of the fixing part can prevent the filler 2 or the object to be tested from flowing out of the gap when the setting of the socket width does not match the thickness of the baffle part 3, or when there is a gap between the baffle part 3 and the inner wall of the cavity 12 of the chromatographic column tube 1.

[0056] For further information, see Figure 3 In the third chromatographic column provided in this embodiment, a sealing member 6 is further provided at the position corresponding to the baffle member 3 and the socket 4. When the baffle member 3 is located in the cavity 12 of the chromatographic column tube 1, and / or the baffle member 3 is taken out from the cavity 12 of the chromatographic column tube 1, the sealing member 6 is used to seal the chromatographic column 1. Specifically, the baffle member 3 is inserted into the cavity 12 of the chromatographic column tube 1 through the socket 4 corresponding to its shape, and the sealing member 6 provided at the corresponding position of the socket 4 on the side of the chromatographic column tube 1 seals the chromatographic column tube 1. Based on the chromatographic column tube 1 being in a sealed state, the gas passing through the chromatographic column tube 1 will not overflow from the socket 4 during the process of passing through the baffle member 3 and the filler 2, so that the obtained processing and analysis results are more accurate; in addition, the sealing member 6 is provided at the position corresponding to the socket 4, which can also prevent the sudden change of air pressure in the cavity 12 of the chromatographic column tube when the baffle member 3 is taken out or inserted, thereby affecting the analysis results.

[0057] It is important to understand that Figure 3 In the third chromatographic column provided in this embodiment, the sealing member 6 can be an airbag 61 provided at the socket of the side wall of the chromatographic column tube. When the barrier component 3 is taken out, the airbag 61 is squeezed. After the barrier component 3 is taken out, the airbag 61 immediately returns to its original state, and the gas in the chromatographic column tube 1 will not leak out from the socket 4. The airbag 61 can be fixed at the socket 4 by bonding, or by other fixing methods, which is not specifically limited in this embodiment.

[0058] In addition, the sealing member 6 can also be an adhesive sealing tape 62, which is slightly larger than the size of the socket 4. After the barrier component 3 enters the cavity 12 and / or is taken out of the cavity 12 of the chromatographic column tube 1, the sealing tape 62 can be attached to the socket to prevent the gas in the chromatographic column tube 1 from leaking from the socket 4. When attaching the sealing tape 62, it should be noted that the sealing tape 62 should completely cover the socket 4, otherwise a small amount of gas will still leak, affecting the analysis results.

[0059] In addition, the sealing member 6 can also be a sealing ring 63 wrapped around the periphery of the barrier member 3, and the size of the sealing ring 63 is the same as the size of the socket 4. After the barrier member 3 enters the cavity 12, the sealing ring 63 fits with the socket 4 to seal the chromatographic column tube 1. The sealing ring 63 can be a rubber ring, a silicone ring or other sealing material, and those skilled in the art can choose any material according to actual conditions, and this embodiment does not make specific restrictions on this. The sealing ring 63 can be wrapped around the periphery of the barrier member 3 by gluing, or it can be in other ways, and this embodiment does not make specific restrictions on this.

[0060] In this embodiment, by providing a seal 6, after the barrier component 3 is inserted into the cavity 12 of the chromatographic column tube 1 from the socket 4, the seal 6 fits against the outer wall of the chromatographic column tube 1, so that the chromatographic column tube 1 is sealed and the gas in the chromatographic column tube 1 does not leak out from the socket 4.

[0061] The above contents are further detailed descriptions of the present invention in combination with specific implementation methods, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A chromatographic column, characterized in that include: A chromatographic column tube, a filler, a baffle component, and a fixing member, wherein the chromatographic column tube comprises a cavity, wherein the filler is filled in the cavity of the chromatographic column tube; a socket is arranged on the side wall of the chromatographic column tube, and the baffle component can be inserted into the cavity or taken out from the cavity through the socket; the baffle component located in the cavity is used to baffle the filler in the axial direction of the chromatographic column tube, and the gas introduced into the chromatographic column tube can flow out through the filler and the baffle component; The chromatographic column tube further comprises two ports, and the blocking components are respectively arranged at the two ports, and the blocking components located at the two ports of the chromatographic column tube are used to block the filler at the two ports to prevent the filler from flowing out of the chromatographic column tube; The fixing member is used to fix the blocking component when the blocking component is located in the cavity; A sealing member is also provided at a position corresponding to the socket; when the baffle member is located in the cavity and / or the baffle member is taken out of the cavity, the sealing member is used to seal the chromatographic column tube.

2. The chromatographic column according to claim 1, characterized in that In the axial direction of the chromatographic column tube, at least one barrier component is further arranged between the barrier components arranged at the two ports, and the barrier component is used to separate the fillers located on both sides thereof.

3. The chromatographic column according to claim 1, characterized in that The outer edge of the baffle component matches the side wall profile of the cavity; the baffle component is inserted into the cavity along the axial direction of the chromatographic column tube through the socket, or the baffle component is inserted into the cavity along the radial direction of the chromatographic column tube through the socket.

4. The chromatographic column according to claim 1, characterized in that The barrier component includes a foldable barrier component, which is in a folded state when inserted into the cavity through the insertion port; when in use, the foldable barrier component is in an unfolded state, and when the foldable barrier component is in the unfolded state, the outer edge of the foldable barrier component matches the side wall contour of the cavity.

5. The chromatographic column according to claim 4, characterized in that The foldable barrier component includes at least two barrier portions, and in a folded state, the at least two barrier portions partially overlap.

6. The chromatographic column according to any one of claims 1 to 5, characterized in that The barrier component is a sheet structure provided with through holes, or a screen box structure with a barrier built in.

7. The chromatographic column according to any one of claims 1 to 5, characterized in that The baffle component is a compressible foamed styrene board or a polyvinyl chloride board. The foamed styrene board or the polyvinyl chloride board is in a compressed state when entering the cavity through the insertion port, and the foamed styrene board or the polyvinyl chloride board returns to its original state after entering the cavity.

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