A quick-assembly and disassembly assembly for an online solid-phase extraction column loading tray

Abstract

This invention provides a quick-assembly and disassembly assembly for an online solid-phase extraction column loading tray, comprising: a loading frame, a sliding locking assembly, hooks, spring plates, and a loading tray. The loading frame has an installation port for mounting the loading tray. The sliding locking assembly and the spring plates are respectively installed on both sides of the installation port. Hooks are respectively installed on both sides of the front end of the loading frame. The hooks are slidably connected to the sliding locking assembly. Moving the hooks causes the sliding locking assembly to slide on the loading frame. Each hook is provided with a clamping head, and the clamping head has a boss that fixes the loading tray and restricts its movement. The spring plates are used to press the loading tray firmly. The technical solution of this invention solves the problems of existing technologies, such as the inability to transport the extraction column as a whole, low working efficiency, and high use and maintenance costs.

Description

Technical Field

[0001] This invention relates to the field of analytical instrument technology, and more particularly to a quick-assembly and disassembly assembly for an online solid-phase extraction column loading tray. Background Technology

[0002] Solid-phase extraction (SPE) utilizes the separation principles of selective adsorption and selective elution in liquid chromatography, primarily for sample separation, purification, and concentration. Compared to traditional liquid-liquid extraction, SPE can improve analyte recovery, more effectively separate analytes from interfering components, and reduce the amount of organic solvents used.

[0003] With the continuous development of technology, to improve sample analysis efficiency, there is a need for fully automated, high-throughput SPE processes and online coupling with liquid chromatography. The Dutch company SPARK has launched a multi-channel automated solid-phase extraction (SPE) system that enables fully automated online coupling of SPE and chromatography, improving sample transfer rates. This product uses an automated robotic arm to remove SPE columns from their loading tray and place them into a horizontally placed semi-circular open compartment (low-pressure zone) for low-pressure sealing, solvent equilibration, sample loading, and elution. The robotic arm then removes the SPE column and transfers it to another horizontally placed semi-circular open compartment (high-pressure zone) for high-pressure sealing and elution injection. After completion, the robotic arm removes it and returns it to the loading tray for later use. However, this method suffers from the problem of non-repeated solid-phase extraction column gripping and positioning, resulting in variations in the deformation position of the sealing blade each time. This reduces the number of times the solid-phase extraction column can be reused and increases costs.

[0004] The Dalian Institute of Chemical Physics, Chinese Academy of Sciences, has developed a fully automated array solid-phase extraction device (patent number: CN106872612A). Its extraction column is mounted on an array disk, and the rotation of the array disk moves the solid-phase extraction column to the corresponding clamp for sample loading, elution, and regeneration. However, both of these instruments require the solid-phase extraction columns to be transported one by one sequentially, rather than as a whole, resulting in low efficiency, high usage and maintenance costs, and limiting their market application. Summary of the Invention

[0005] To address the aforementioned technical problems of inability to transport extraction columns as a whole, low work efficiency, and high usage and maintenance costs, this invention provides a quick-assembly and disassembly assembly for an online solid-phase extraction column loading tray. This invention primarily utilizes sliding locking components and hooks located on both sides of the loading frame, allowing the loading tray to be detachably mounted on the frame. This enables the entire loading tray to be transported, facilitating the simultaneous transport and automated processing of multiple extraction columns, effectively improving work efficiency. Furthermore, it is simple to operate, structurally reliable, offers high component interchangeability, and is low in cost.

[0006] The technical means employed in this invention are as follows:

[0007] A quick-release assembly for loading trays of an online solid-phase extraction column includes: a loading rack, a sliding locking assembly, a hook, a spring plate, and a loading tray;

[0008] The loading rack has an installation port for mounting the loading tray. The sliding locking assembly and the spring plate are respectively installed on both sides of the installation port. The hooks are respectively installed on both sides of the front end of the loading rack. The hooks are slidably connected to the sliding locking assembly. Moving the hooks causes the sliding locking assembly to slide on the loading rack, thereby locking the loading tray.

[0009] The hook is provided with a clamping head, and the clamping head is provided with a boss, which fixes the loading tray and restricts the movement of the loading tray.

[0010] The spring sheet is used to press the loading disc.

[0011] Furthermore, it also includes a limiting block. Grooves I, II, and a straight slot I are respectively provided on both sides of the mounting opening. The limiting block is installed in groove I to limit the insertion position of the loading tray. The spring sheet is installed in groove II. A straight slot II corresponding to the position of straight slot I is provided on the lower surface of the loading frame. A straight slot III is opened in straight slot I to connect straight slot I and straight slot II. The sliding locking assembly is installed in straight slot I and straight slot II through straight slot III. Grooves III are provided on both sides of the front end of the loading frame, and the hook is rotatably installed in groove III.

[0012] Furthermore, the sliding locking assembly includes: a clamping plate, a cylindrical pin I, a cylindrical pin II, a tension spring, and a pin shaft. The clamping plate is disposed within the straight slot I and the straight slot II. The two ends of the upper and lower clamping plates are fixedly connected by the cylindrical pin I and the cylindrical pin II. One end of the tension spring is fixedly installed on the cylindrical pin II, and the other end is fixedly installed on the pin shaft. The pin shaft is fixedly installed on the loading frame.

[0013] Furthermore, the bottom of the hook is provided with a switch handle, the hook is provided with a heart-shaped groove, the hook is located between the two clamping plates, and the cylindrical pin I passes through the heart-shaped groove to make the hook slidably connected to the sliding locking assembly.

[0014] Furthermore, the loading disc has several circular holes arrayed on it for placing the extraction column. The two ends of the loading disc are respectively provided with boss II, the inner side of the mounting port is provided with boss I, and the limiting block is provided with boss III. The loading disc is inserted and installed on the boss I, and the boss II is close to the boss III.

[0015] Furthermore, both spring plate I and spring plate II are 7-shaped plates. The front end of the long side of the 7-shaped plate is provided with a recessed structure I, and the inner side of the short side of the 7-shaped plate is provided with a small tongue plate. The recessed structure I can be in close contact with the upper surface of the boss II. The small tongue plate is inserted into the straight groove I. The recessed structure I and the small tongue plate can make the spring plate press against the loading plate.

[0016] A rectangular plate perpendicular to the long side is provided on the outer side of the long side of the spring plate I. The front end of the rectangular plate has a recessed structure II. The recessed structure II achieves the pressing and fixing of the spring plate I on the side of the loading disk by making close contact with the side surface of the loading disk.

[0017] Furthermore, the cylindrical pin I has three cylindrical surfaces, the two ends of the cylindrical pin I have the same diameter, and the diameter of the two ends of the cylindrical pin I is less than the diameter of the middle cylindrical surface of the cylindrical pin I.

[0018] The cylindrical pin II is divided into five cylindrical surfaces from top to bottom. The diameter of the first cylindrical surface is the same as that of the fifth cylindrical surface, the diameter of the second cylindrical surface is the same as that of the fourth cylindrical surface, the diameter of the first cylindrical surface is less than that of the second cylindrical surface, and the diameter of the second cylindrical surface is greater than that of the third cylindrical surface.

[0019] Furthermore, the clamping plate, the straight groove III, and the straight groove I are all elongated structures with semi-cylindrical ends. The clamping plate has cylindrical holes III at both ends for placing the cylindrical pins I and II. The semi-cylindrical ends of the clamping plate are concentric with the cylindrical holes III, and the diameter of the cylindrical holes III is D. 夹 The center distance between the two semi-cylindrical surfaces is L. 夹 The width of the clamping plate is W. 夹 ;

[0020] The diameter of the cylindrical surfaces at both ends of the cylindrical pin I is D. A The outermost cylindrical diameter D at both ends of the cylindrical pin II B D 夹 <D A =D B <D 夹 +0.1mm;

[0021] The free length of the tension spring is H, and its outer diameter is D. 簧 The distance between the two bosses II on both sides of the loading disk is W. 盘 The center-to-center distance between the two semi-cylindrical surfaces of the straight groove I is L. A The width of the straight slot I is W AThe distance between the centers of the two semi-cylindrical surfaces at the two ends of the straight groove III is L. C The width of the straight slot III is W. C L A =L C >L 夹 +H, W 夹 <W A <W 夹 +0.1mm, W A >W C >D 簧 ≥2mm, the width of the mounting opening is W 架 , 0 < W 架 <W 盘 +0.1mm.

[0022] Furthermore, a cylindrical hole I is provided above the groove III, and a threaded hole corresponding to the cylindrical hole I is provided below it. A cylindrical hole II is provided on the hook. A threaded pin passes through the cylindrical hole I, the cylindrical hole II and the threaded hole in sequence to rotate and install the hook in the groove III.

[0023] The diameter of the threaded pin is d, and the diameter of the cylindrical hole II is D. 钩 d < D 钩 <d+0.1mm, the diameter of the cylindrical hole I is D 孔 The major diameter of the threaded hole is M, and d < M ≤ D. 孔 <d+0.1mm.

[0024] Furthermore, the loading frame, the hook, the limiting block, the threaded pin, the loading disc, the clamping plate, the cylindrical pin I, the cylindrical pin II, and the pin shaft are made of stainless steel, aluminum alloy, or titanium alloy, and the spring sheet and the tension spring are made of stainless steel or spring steel.

[0025] Compared with the prior art, the present invention has the following advantages:

[0026] 1. The present invention provides an online solid phase extraction column loading tray quick disassembly and assembly assembly. Through the sliding locking components and hooks set on both sides of the loading frame, the loading tray can be detachably installed on the loading frame. The loading tray can be transported as a whole, realizing the simultaneous transport and automated processing of multiple extraction columns, which effectively improves work efficiency. Moreover, it is simple to operate, has a reliable structure, high interchangeability of parts, and low cost.

[0027] In summary, the technical solution of this invention, through the sliding locking components and hooks located on both sides of the loading frame, allows the loading tray to be detachably mounted on the loading frame, enabling the entire loading tray to be transported as a whole. This achieves simultaneous transport and automated processing of multiple extraction columns, effectively improving work efficiency. Furthermore, it is simple to operate and low in cost. Therefore, the technical solution of this invention solves the problems of existing technologies, such as the inability to transport extraction columns as a whole, low work efficiency, and high usage and maintenance costs.

[0028] Based on the above reasons, this invention can be widely promoted in fields such as analytical instruments. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the structure of the online solid phase extraction column loading tray quick disassembly assembly described in this invention.

[0031] Figure 2 This is a schematic diagram of the loading frame structure described in this invention.

[0032] Figure 3 This is a schematic diagram of the sliding locking assembly structure described in this invention.

[0033] Figure 4 This is a schematic diagram of the hook structure described in this invention.

[0034] Figure 5 This is a schematic diagram of the spring sheet I structure described in this invention.

[0035] Figure 6 This is a schematic diagram of the spring sheet II structure described in this invention.

[0036] Figure 7 This is a schematic diagram of the loading disk structure described in this invention.

[0037] In the diagram: 1. Loading frame; 11. Boss I; 12. Groove I; 13. Groove II; 14. Straight groove I; 15. Circular groove II; 16. Groove III; 17. Cylindrical hole I; 18. Threaded hole; 2. Sliding locking assembly; 21. Clamping plate; 22. Cylindrical pin I; 23. Cylindrical pin II; 24. Tension spring; 25. Pin shaft; 3. Hook; 31. Rectangular plate; 32. Switch handle; 33. Pressing head; 311. Heart-shaped groove; 322. Cylindrical hole II; 4. Limiting block; 5. Spring plate I; 51. Small tongue plate; 52. Recessed structure I; 53. Recessed structure II; 54. Rectangular plate; 6. Spring plate II; 7. Threaded pin; 8. Loading tray. Detailed Implementation

[0038] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0041] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0042] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0043] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0044] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0045] Example 1

[0046] like Figures 1-7 As shown, the present invention provides a quick assembly and disassembly assembly for an online solid phase extraction column loading tray, comprising: a loading rack 1, a sliding locking assembly 2, a hook 3, a limiting block 4, a spring plate I 5, a spring plate II 6, and a loading tray 8;

[0047] The loading frame 1 has an installation opening for mounting the loading tray 8. On both sides of the installation opening, grooves I12, II13, and straight slots I14 are respectively provided. The limiting block 4 is installed in the groove I12. The spring plate I5 is fixedly installed in one side of the groove II13, and the spring plate II6 is installed in the other side of the groove II13. The lower surface of the loading frame 1 is provided with a straight slot II corresponding to the position of the straight slot I14. A straight slot III is provided in the straight slot I14 to connect the straight slot I14 and the straight slot II. The width of the straight slot III is smaller than the width of the straight slot I14.

[0048] The sliding locking assembly 2 includes: a clamping plate 21, a cylindrical pin I 22, a cylindrical pin II 23, a tension spring 24, and a pin 25. The clamping plate 21 is respectively provided in the straight slot I14 and the straight slot II. Cylindrical holes III are respectively provided at both ends of the clamping plate 21. The upper and lower clamping plates 21 are fixedly connected by inserting the cylindrical pin I 22 and the cylindrical pin II 23 into the cylindrical holes III at both ends. One end of the tension spring 24 is installed on the cylindrical pin II 23, and the other end is installed on the pin 25. A circular groove II 15 is opened in the straight slot I14. The circular groove II 15 is close to the groove II 13. The pin 25 is fixedly installed in the circular groove II 15.

[0049] The hook 3 includes a rectangular plate 31, a switch handle 32, and a clamping head 33. The switch handle 32 is located at the bottom of the rectangular plate 31, and the clamping head 33 is located on one side of the rectangular plate 31. The rectangular plate 31 is provided with a heart-shaped groove 311 and a cylindrical hole II 322. The front end of the loading frame 1 is provided with grooves III 16 on both sides. A cylindrical hole I17 is provided above the groove III 16, and a threaded hole 18 corresponding to the cylindrical hole I17 is provided below it. A threaded pin 7 passes through the cylindrical hole I17, the cylindrical hole II 322, and the threaded hole 18 in sequence to rotate and install the hook 3 in the groove III 16. The hook 3 is located between the two clamping plates 21, and the cylindrical pin I 22 passes through the heart-shaped groove 31 to make the hook 3 slidably connected to the sliding locking assembly 2.

[0050] Furthermore, one end of the limiting block 4 is provided with a boss III, which is used to limit the position of the loading disk 8 and prevent the loading disk 8 from being inserted too deeply when inserted into the mounting port.

[0051] Furthermore, both spring sheet I 5 and spring sheet II 6 are 7-shaped plates. The front end of the long side of the 7-shaped plate is provided with a recessed structure I 52, and the inner side of the short side of the 7-shaped plate is provided with a small tongue plate 51. The recessed structure I 52 can be in close contact with the upper surface of the boss II. The small tongue plate 51 is inserted into the straight slot I 14. The recessed structure I 52 and the small tongue plate 51 can make the spring sheet press against the loading plate.

[0052] A rectangular plate 54 perpendicular to the long side is provided on the outer side of the long side of the spring plate I 5. The front end of the rectangular plate 54 has a recessed structure II 53. The recessed structure II 53 achieves the pressing and fixing of the spring plate I 5 to the side of the loading disk 8 by making close contact with the side surface of the loading disk 8.

[0053] Furthermore, a boss I11 is provided on the inner side of the mounting port, and the loading plate 8 is inserted and installed on the boss I11. Several round holes are arranged in an array on the loading plate 8 for placing the extraction column. Bosses II are provided at both ends of the loading plate 8. During installation, the bosses II are close to the bosses III of the limiting block 4.

[0054] Furthermore, the clamping head 33 is pentagonal, with its interior angles consisting of three right angles, a 135° obtuse angle, and a 45° acute angle. A boss is provided at one end of the clamping head 33 away from the rectangular plate 31. The boss is cylindrical and faces upwards, and is used to lock the loading disc 8.

[0055] Furthermore, the cylindrical pin 22 has three cylindrical surfaces. The diameters of the cylindrical surfaces at both ends of the cylindrical pin 22 are the same, and the diameters of the cylindrical surfaces at both ends of the cylindrical pin 22 are smaller than the diameter of the cylindrical surface in the middle of the cylindrical pin 22. This is mainly used to limit the upper and lower clamping plates 21 to prevent them from jamming.

[0056] Furthermore, the cylindrical pin 23 is divided into five cylindrical surfaces from top to bottom. The diameter of the first cylindrical surface is the same as that of the fifth cylindrical surface, the diameter of the second cylindrical surface is the same as that of the fourth cylindrical surface, the diameter of the first cylindrical surface is smaller than that of the second cylindrical surface, and the diameter of the second cylindrical surface is larger than that of the third cylindrical surface. It is mainly used to limit the position of the upper and lower clamping plates and the tension spring.

[0057] Furthermore, the loading frame 1, the hook 3, the limiting block 4, the threaded pin 7, the loading disc 8, the clamping plate 21, the cylindrical pin I 22, the cylindrical pin II 23 and the pin shaft 25 are made of stainless steel, aluminum alloy or titanium alloy, and the spring plate I 5, the spring plate II 6 and the tension spring 24 are made of stainless steel or spring steel.

[0058] Furthermore, the tension spring 24 is used to tighten the cylindrical pin II 23 and the pin shaft 25. When locked, there will be a locking force to tighten the clamping plate 21, thereby tightening the hook 3 and locking the loading tray 8.

[0059] Furthermore, the straight groove I14 is a long strip structure with semi-cylindrical surfaces at both ends. A notch is provided on the semi-cylindrical surface near the groove II for placing the small tongue plate.

[0060] Furthermore, the clamping plate 21 has a long strip structure with semi-cylindrical ends corresponding to the straight slot I14. The semi-cylindrical ends of the clamping plate 21 are concentric with the cylindrical hole III, and the diameter of the cylindrical hole III is D. 夹 The center distance between the two semi-cylindrical surfaces is L. 夹 The width of the clamping plate 21 is W. 夹 ;

[0061] The diameter of the cylindrical surfaces at both ends of the cylindrical pin I 22 is D. A The outermost cylindrical diameter D at both ends of the cylindrical pin II 23 B D 夹 <D A =D B <D 夹 +0.1mm;

[0062] The free length of the tension spring 24 is H, and its outer diameter is D. 簧 The distance between the two bosses II on both sides of the loading disk 8 is W. 盘 The center distance between the two semi-cylindrical surfaces of the straight slot I14 is L. A The width of the straight slot I14 is W. A The distance between the centers of the two semi-cylindrical surfaces at the two ends of the straight groove III is L. C The width of the straight slot III is W. C L A =L C >L 夹 +H, W 夹 <W A <W 夹 +0.1mm, W A >W C >D簧 ≥2mm, the width of the mounting opening is W 架 , 0 < W 架 <W 盘 +0.1mm;

[0063] The diameter of the threaded pin 7 is d, and the diameter of the cylindrical hole II 322 is D. 钩 d < D 钩 <d+0.1mm, the diameter of the cylindrical hole 17 is D 孔 The major diameter of the thread in the threaded hole 18 is M, where d < M ≤ D. 孔 <d+0.1mm;

[0064] By setting the fit tolerances between the various components, the loading tray 8 can be precisely positioned and locked, so that the loading tray 8 is fixedly locked in the mounting port. If the dimensions are inaccurate, the entire device will not be able to be used normally or the positioning of the loading tray 8 will be inaccurate.

[0065] The method of using the online solid phase extraction column loading tray quick-release assembly is as follows: Turn the switch handle 33, and the cylindrical pin I 22 will slide in the heart-shaped groove 31, thereby driving the entire sliding locking assembly 2 to slide on the loading frame 1. The cylindrical pin I 22 slides from the inner end to the outer end of the heart-shaped groove 31, and the tension spring 24 rebounds and tightens, causing the hook 3 to open. The loading tray 8 can be detachably installed on the loading frame 1. When installing the loading tray 8, the boss II is pressed against the limiting block 4. After installation, the spring plate I 5 and the spring plate II 6 are respectively placed into the grooves II 13 on both sides to press the loading tray 8. Then, the hook 3 is turned back, and the tension spring 24 rebounds and tightens again, causing the hook 3 to press against the boss II of the loading tray 8, further locking the loading tray 8. The hook 3 can be repeatedly turned to replace the loading tray 8.

[0066] Furthermore, the center distance between the two semi-cylindrical surfaces of the clamping plate 21 is 20mm, the width of the clamping plate 21 is 6mm, the diameter of the cylindrical hole III is 1.5mm, the diameter of the cylindrical surfaces at both ends of the cylindrical pin I 22 and the diameter of the cylindrical surfaces at both ends of the cylindrical pin II 23 are 1.55mm, the free length of the tension spring 24 is 10mm, and the outer diameter is 2mm, the distance between the outermost sides of the two bosses II on the loading disc 8 is 130mm, the center distance between the two semi-cylindrical surfaces of the straight groove I14 is 35mm, and the width is 6.05mm, the center distance between the two semi-cylindrical surfaces of the straight groove III is 35mm, and the width is 2.5mm, the width of the mounting opening is 130.05mm, the diameter of the threaded pin 7 is 2.95mm, the major diameter of the thread of the threaded hole 18 is 3mm, the diameter of the cylindrical hole II 32 is 3mm, and the diameter of the cylindrical hole I17 is 3mm.

[0067] Furthermore, the loading rack 1, the hook 3, the limiting block 4, the threaded pin 7, the clamping plate 21, the spring plate I 5, the spring plate II 6, and the tension spring 24 are made of stainless steel, and the loading plate 8 is made of aluminum alloy.

[0068] Example 2

[0069] The difference between the online solid-phase extraction column loading tray quick-assembly assembly provided in Example 2 and Example 1 is as follows: the diameter of the cylindrical hole III is 2mm, the center distance between the two semi-cylindrical surfaces of the clamping plate 21 is 16mm, the width of the clamping plate 21 is 5mm, the diameter of the two cylindrical surfaces of the cylindrical pin I 22 and the diameter of the two cylindrical surfaces of the cylindrical pin II 23 are 2.08mm, the free length of the tension spring 24 is 8mm, the outer diameter is 2mm, the distance between the outermost sides of the two bosses II on the loading tray 8 is 140mm, the center distance between the two semi-cylindrical surfaces of the straight groove I 14 is 30mm, the width is 5.03mm, the center distance between the two semi-cylindrical surfaces of the straight groove III is 30mm, the width is 3mm, the width of the mounting port is 140.06mm, the diameter of the threaded pin 7 is 4.05mm, and the major diameter of the thread of the threaded hole 18 is 3mm.

[0070] The loading frame 1, the hook 3, the limiting block 4, the threaded pin 7, the loading disc 8, and the clamping plate 21 are made of titanium alloy, while the spring sheet I 5, the spring sheet II 6, and the tension spring 24 are made of spring steel.

[0071] Example 3

[0072] The difference between the online solid-phase extraction column loading tray quick-assembly assembly provided in Example 3 and Example 1 is as follows: the diameter of the cylindrical hole III is 3mm, the center distance between the two semi-cylindrical surfaces of the clamping plate 21 is 30mm, the width of the clamping plate 21 is 8mm, the diameter of the two cylindrical surfaces of the cylindrical pin I 22 and the diameter of the two cylindrical surfaces of the cylindrical pin II 23 are 3.03mm, the free length of the tension spring 24 is 15mm, the outer diameter is 3mm, the distance between the outermost sides of the two bosses II on the loading tray 8 is 120mm, the center distance between the two semi-cylindrical surfaces of the straight groove I 14 is 60mm, the width is 8.06mm, the center distance between the two semi-cylindrical surfaces of the straight groove III is 60mm, the width is 4mm, the width of the mounting opening is 120.03mm, and the materials of the limiting block 4, the loading tray 8, the clamping plate 21, the cylindrical pin 22, the cylindrical pin 23, and the pin shaft 25 are aluminum alloy.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A quick-assembly and disassembly assembly for an online solid-phase extraction column loading tray, characterized in that, include: Loading rack, sliding locking assembly, hooks, spring plates, and loading tray; The loading rack has an installation port for mounting the loading tray. The sliding locking assembly and the spring plate are respectively installed on both sides of the installation port. The hooks are respectively installed on both sides of the front end of the loading rack. The hooks are slidably connected to the sliding locking assembly. Moving the hooks causes the sliding locking assembly to slide on the loading rack, thereby locking the loading tray. The hook is provided with a clamping head, and the clamping head is provided with a boss, which fixes the loading tray and restricts the movement of the loading tray. The spring plate is used to press the loading disc; The mounting opening is provided with straight slots I on both sides, and straight slots II corresponding to the positions of straight slots I are provided on the lower surface of the loading frame. A straight slot III is opened in the straight slot I to connect the straight slots I and the straight slots II. The sliding locking assembly is installed on the straight slots I and the straight slots II through the straight slot III. Grooves III are provided on both sides of the front end of the loading frame, and the hook is rotatably installed in the grooves III. The sliding locking assembly includes: a clamping plate, a cylindrical pin I, a cylindrical pin II, a tension spring, and a pin shaft. The clamping plate is disposed within the straight slot I and the straight slot II. The two clamping plates are fixedly connected at both ends by the cylindrical pin I and the cylindrical pin II. One end of the tension spring is fixedly installed on the cylindrical pin II, and the other end is fixedly installed on the pin shaft. The pin shaft is fixedly installed on the loading frame. The bottom of the hook is provided with a switch handle, the hook is provided with a heart-shaped groove, the hook is located between the two clamping plates, and the cylindrical pin I passes through the heart-shaped groove to make the hook slidably connected to the sliding locking assembly. When the switch handle is turned, the cylindrical pin I slides from the inner end to the outer end of the heart-shaped groove, and the tension spring rebounds and tightens, thus opening the hook; after installation, the hook is turned back, and the tension spring rebounds and tightens again, locking the loading tray.

2. The quick-assembly and disassembly assembly for the online solid-phase extraction column loading tray according to claim 1, characterized in that, It also includes a limiting block, with grooves I and II provided on both sides of the mounting port. The limiting block is installed in the groove I to limit the insertion position of the loading plate, and the spring sheet is installed in the groove II.

3. The quick-assembly and disassembly assembly for the online solid-phase extraction column loading tray according to claim 2, characterized in that, The loading plate has several circular holes arranged in an array for placing extraction columns. Both ends of the loading plate are provided with bosses II, the inner side of the mounting port is provided with boss I, and the limiting block is provided with boss III. The loading plate is inserted and installed on the boss I, and the boss II is close to the boss III.

4. The quick-assembly and disassembly assembly for the online solid-phase extraction column loading tray according to claim 3, characterized in that, Both spring plate I and spring plate II are 7-shaped plates. The long side of the 7-shaped plate has a recessed structure I at the front end, and the short side of the 7-shaped plate has a small tongue plate on the inner side. The recessed structure I can be in close contact with the upper surface of the boss II. The small tongue plate is inserted into the straight groove I. The recessed structure I and the small tongue plate can make the spring plate press against the loading plate. A rectangular plate perpendicular to the long side is provided on the outer side of the long side of the spring plate I. The front end of the rectangular plate has a recessed structure II. The recessed structure II achieves the pressing and fixing of the spring plate I on the side of the loading disk by making close contact with the side surface of the loading disk.

5. The quick-assembly and disassembly assembly for the online solid-phase extraction column loading tray according to claim 1, characterized in that, The cylindrical pin I has three cylindrical surfaces. The diameters of the two cylindrical surfaces at both ends of the cylindrical pin I are the same, and the diameters of the two cylindrical surfaces at both ends of the cylindrical pin I are less than the diameter of the middle cylindrical surface of the cylindrical pin I. The cylindrical pin II is divided into five cylindrical surfaces from top to bottom. The diameter of the first cylindrical surface is the same as that of the fifth cylindrical surface, the diameter of the second cylindrical surface is the same as that of the fourth cylindrical surface, the diameter of the first cylindrical surface is less than that of the second cylindrical surface, and the diameter of the second cylindrical surface is greater than that of the third cylindrical surface.

6. The quick-assembly and disassembly assembly for the online solid-phase extraction column loading tray according to claim 5, characterized in that, The clamping plate, the straight slot III, and the straight slot I are all elongated structures with semi-cylindrical ends. The clamping plate has cylindrical holes III at both ends for placing the cylindrical pin I and the cylindrical pin II. The semi-cylindrical ends of the clamping plate are concentric with the cylindrical holes III, and the diameter of the cylindrical holes III is D. 夹 The center distance between the two semi-cylindrical surfaces is L. 夹 The width of the clamping plate is W. 夹 ; The diameter of the cylindrical surfaces at both ends of the cylindrical pin I is D. A The outermost cylindrical diameter D at both ends of the cylindrical pin II B D 夹 <D A =D B <D 夹 +0.1 mm; The free length of the tension spring is H, and its outer diameter is D. 簧 The distance between the two bosses II on both sides of the loading disk is W. 盘 The center-to-center distance between the two semi-cylindrical surfaces of the straight groove I is L. A The width of the straight slot I is W A The distance between the centers of the two semi-cylindrical surfaces at the two ends of the straight groove III is L. C The width of the straight slot III is W. C L A =L C >L 夹 +H, W 夹 <W A <W 夹 +0.1mm, W A >W C >D 簧 ≥2 mm, the width of the mounting opening is W 架 , 0 < W 架 <W 盘 +0.1 mm.

7. The quick-assembly and disassembly assembly for the online solid-phase extraction column loading tray according to claim 1, characterized in that, A cylindrical hole I is provided above the groove III, and a threaded hole corresponding to the cylindrical hole I is provided below it. A cylindrical hole II is provided on the hook. A threaded pin passes through the cylindrical hole I, the cylindrical hole II and the threaded hole in sequence to rotate and install the hook in the groove III. The diameter of the threaded pin is d, and the diameter of the cylindrical hole II is D. 钩 d < D 钩 <d+0.1 mm, the diameter of the cylindrical hole I is D 孔 The major diameter of the threaded hole is M, and d < M ≤ D. 孔 <d+0.1 mm.

8. The quick-assembly and disassembly assembly for the online solid-phase extraction column loading tray according to claim 7, characterized in that, The loading frame, the hook, the limiting block, the threaded pin, the loading disc, the clamping plate, the cylindrical pin I, the cylindrical pin II, and the pin shaft are made of stainless steel, aluminum alloy, or titanium alloy, and the spring sheet and the tension spring are made of stainless steel or spring steel.

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