An adjustable resin column rack for laboratory element separation

Abstract

The utility model belongs to the technical field of laboratory appliance, concretely is a kind of adjustable resin column frame for laboratory element separation, base, bottom disc, lower fixed disc, lower turntable, upper fixed disc, upper turntable are installed from below to above in turn, fixed shaft is fixed in base center, inner rotating shaft sleeve is located on fixed shaft, inner rotating shaft lower end is fixed in bottom disc center, lower turntable is fixed in inner rotating shaft middle part, and is reinforced by lower fixed disc, outer rotating shaft sleeve is located on inner rotating shaft, upper turntable is fixed on outer rotating shaft by upper fixed disc and clamping bolt.The upper turntable of the utility model can adjust the placement position to adapt to different types of resin column, and the utility model is also matched with different collection tube frame to adapt to different collection tube, reduces solution transfer frequency, can let experimental personnel more conveniently and quickly place resin column and collect solution.

Description

Technical Field

[0001] This utility model belongs to the field of laboratory equipment technology, specifically an adjustable resin column rack for laboratory element separation. Background Technology

[0002] Element separation technology plays a crucial role in modern scientific research and industrial production. Whether in chemical analysis, geological research, biomedicine, or semiconductor manufacturing, the precise separation and purification of specific elements in samples is essential to meet various needs in experimental analysis and product manufacturing. For example, in geological isotope analysis, specific elements need to be separated from complex rock samples to study the Earth's evolutionary history; in semiconductor manufacturing, to ensure the high quality and high performance of chips, it is impurity elements in ultrapure reagents must be effectively removed.

[0003] As ion exchange resin columns have become widely used as a key tool for elemental separation in the aforementioned scenarios, resin column holders have emerged. Early resin column holders were extremely simple in structure, mostly constructed of wood or metal, merely a perforated frame used to secure the resin column. These early resin column holders only provided basic support, requiring manual adjustment of the resin column and sample container during operation. This was not only inefficient but also prone to sample spillage and cross-contamination.

[0004] With the increasing demand for elemental separation experiments and technological advancements, resin column racks are developing towards greater specialization. A utility model patent, CN206853734U, published on January 9, 2018, discloses a "Laboratory Elemental Separation Resin Column Rack." This rack has a relatively simple structure and can be effectively rotated for ease of use by researchers. While the turntables can rotate freely, the distance between them cannot be freely adjusted, making it unsuitable for different resin columns. A utility model patent, CN215541065U, published on January 18, 2022, discloses an "Improved Laboratory Elemental Separation Resin Column Rack." This rack has only two discs, and the positioning of the discs is controlled by a positioning mechanism. However, the positioning mechanism has many structural components, increasing the complexity of manufacturing and maintenance. Although the waste liquid collection function is improved, the height of the collection hopper needs to be adjusted via a pull ring and spring mechanism, making operation inconvenient. The disc spacing is fixed and cannot be flexibly adjusted according to experimental needs. The utility model patent announced on September 27, 2022, with announcement number CN217490951U, discloses "an improved multi-layer rotatable resin column frame". It has multiple layers of shelves, and the position of the multiple layers of shelves can be freely set on the column using limiting members. The interval between the shelves can be flexibly adjusted according to the size of the resin column. Each shelf can rotate freely in the radial direction of the column above the limiting member. At the same time, the column and shelves above the waste liquid box can be rotated as a whole. However, the limiting member is only fixed by a single screw, which is not stable enough. Utility Model Content

[0005] To address the aforementioned problems with existing resin column racks, the present invention aims to provide an adjustable resin column rack for laboratory elemental separation. This adjustable resin column rack accommodates different types of resin columns by adjusting the upper turntable, and its stability is enhanced by clamping bolts and a fixing plate. Furthermore, it is equipped with different collection tube racks to accommodate different collection tubes, reducing the number of solution transfers and allowing researchers to place resin columns and collect solutions more conveniently and quickly.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] This utility model includes an outer rotating shaft, an upper fixed plate, clamping bolts, an upper turntable, a lower turntable, a fixed shaft, an inner rotating shaft, a base, and a base. The lower end of the fixed shaft is fixed to the base. The inner rotating shaft is a hollow shaft, with its lower end fixed to the base and its upper end closed. The fixed shaft passes through the base and is inserted into the inner rotating shaft. The base can rotate relative to the base. The lower turntable is fixed to the inner rotating shaft. The outer rotating shaft is a hollow shaft with an open lower end and a closed upper end. The outer rotating shaft covers the outer rotating shaft. Multiple bolts are axially arranged on the outer rotating shaft. The upper fixed plate and the upper turntable are both located above the lower turntable. The upper fixed plate is sleeved on the outer rotating shaft, and a clamping bolt is spirally connected to the upper fixed plate. The upper turntable is rotatably sleeved on the outer rotating shaft and supported by the upper fixed plate. The distance between the upper and lower turntables can be adjusted by inserting the clamping bolts on the upper fixed plate into bolt placement holes of different heights. After adjustment, the inner rotating shaft is clamped by the clamping bolts, thereby realizing the linkage between the upper and lower turntables. Placement holes for inserting resin columns are opened on both the upper and lower turntables.

[0008] Wherein: the chassis has a central opening, the lower end of the inner rotating shaft is fixed to the top surface of the chassis, and the central opening of the chassis is connected to the interior of the inner rotating shaft; the bottom surface of the chassis has multiple concentric sliding grooves, and each groove is equipped with a ball bearing for sliding contact with the top surface of the base.

[0009] Below the lower turntable is a lower fixing plate that serves as a reinforcement. The lower fixing plate, the inner rotating shaft, the lower turntable, and the chassis are integrally injection molded.

[0010] The upper and lower turntables are circular disks of the same size. The upper turntable has a central hole. Multiple placement holes are located near the edge of the upper turntable and are evenly spaced along the circumference. Multiple placement holes are also located near the edge of the lower turntable and are evenly spaced along the circumference. The number of upper and lower placement holes is the same, and they correspond one-to-one. The outer rotating shaft passes through the central hole of the upper turntable, and the central hole and the outer rotating shaft are interference-fitted.

[0011] The upper fixed plate has a central opening with a diameter larger than the outer diameter of the outer rotating shaft, through which the outer rotating shaft passes. The top of the upper fixed plate extends radially outward to form an extension for supporting the upper turntable. The side surface of the upper fixed plate has a threaded hole communicating with the central opening, and a clamping bolt is threaded into the threaded hole. There are two clamping bolts in a set, with their axial center lines collinear and perpendicular to the axial center line of the upper fixed plate. Correspondingly, the bolt placement holes on the outer rotating shaft are arranged in multiple rows, with two holes in each row. The axial center lines of the two bolt placement holes in each row are collinear and perpendicular to the axial center line of the outer rotating shaft. After the distance between the upper and lower turntables is adjusted, the two clamping bolts are inserted through the two bolt placement holes in the corresponding row and clamp the inner rotating shaft.

[0012] The chassis has a waste liquid box with an open top and a closed bottom. The waste liquid box is divided into two semicircles. Each semicircle has a groove in the middle of its straight edge. The grooves on the two semicircles clamp the inner rotating shaft in the middle.

[0013] A semi-circular collection tube rack is provided above the waste liquid box. A groove is opened in the middle of the straight edge of the collection tube rack. Multiple collection tube rack placement holes are evenly opened in the circumferential direction near the edge of the collection tube rack. Collection tubes are inserted into the collection tube rack placement holes. The top arc edge of the collection tube rack extends radially outward to form a retaining edge. The vertical edge of the retaining edge is embedded in the waste liquid box, and the horizontal edge of the retaining edge rests on the waste liquid box, thereby limiting the position of the collection tube rack.

[0014] A collection tube rack is placed on the chassis. The collection tube rack is divided into two semicircles, and a groove is opened in the middle of the straight edge of each semicircle. The grooves on the two semicircles clamp the inner rotating shaft in the middle. A number of collection tube rack placement holes are evenly opened along the circumference near the edge of the collection tube rack. The number of collection tube rack placement holes is the same as the number of placement holes on the upper turntable and the lower turntable, and they correspond one-to-one. Collection tubes are inserted into the collection tube rack placement holes.

[0015] The chassis is equipped with a waste liquid box and a collection tube rack. Both the waste liquid box and the collection tube rack are semi-circular. The waste liquid box is open at the top and closed at the bottom. The collection tube rack has multiple collection tube rack placement holes evenly distributed along the circumference near the edge. Collection tubes are inserted into the collection tube rack placement holes. The waste liquid box and the collection tube rack have grooves in the middle of their straight edges. The grooves on the two semi-circles clamp the inner rotating shaft in the middle.

[0016] The collection tube rack placement hole is a circular flat-bottomed hole, a circular conical-bottomed hole, or a circular U-shaped bottomed hole.

[0017] The advantages and positive effects of this utility model are as follows:

[0018] 1. In this utility model, the inner rotating shaft is sleeved on the fixed shaft, the outer rotating shaft is sleeved on the inner rotating shaft, and the upper turntable is fixed by the upper fixed plate and clamping bolts. By rotating the upper turntable, the lower turntable can be driven to move in conjunction.

[0019] 2. This utility model adapts to different types of resin columns by adjusting the position of the upper turntable.

[0020] 3. The upper turntable of this utility model shares the load through the upper fixed plate and is fixed with symmetrical clamping bolts, which increases its safety during use.

[0021] 4. This utility model is equipped with different collection tube racks to accommodate different collection tubes, reducing the number of solution transfers and allowing researchers to place resin columns and collect solutions more conveniently and quickly.

[0022] 5. This utility model can be equipped with a waste liquid box on the chassis for collecting waste liquid.

[0023] 6. This utility model can be repeatedly autoclaved or acid-soaked to avoid cross-contamination. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0025] Figure 2 This is a structural schematic diagram of the fixed shaft and base of this utility model;

[0026] Figure 3 This is a structural diagram of the inner rotating shaft, lower turntable, lower fixed plate and chassis of this utility model;

[0027] Figure 4 This is a bottom view of the chassis structure of this utility model;

[0028] Figure 5 This is a schematic diagram of the structure of the outer rotating shaft and the upper turntable of this utility model;

[0029] Figure 6 This is a schematic diagram of the upper fixing plate and clamping bolts of this utility model;

[0030] Figure 7 This is a top view of the upper turntable structure of this utility model;

[0031] Figure 8A This is one of the structural schematic diagrams of the waste liquid box of this utility model;

[0032] Figure 8B This is the second structural schematic diagram of the waste liquid box of this utility model;

[0033] Figure 9A This is one of the structural schematic diagrams of the collection tube rack of this utility model (the collection tube rack placement hole is a circular flat-bottomed hole);

[0034] Figure 9B This is the second structural schematic diagram of the collection tube rack of this utility model (the collection tube rack placement hole is a circular conical bottom hole).

[0035] Figure 9C This is the third structural schematic diagram of the collection tube rack of this utility model (the collection tube rack placement hole is a circular U-shaped bottom hole).

[0036] Figure 9D This is the fourth schematic diagram of the structure of the collection tube rack of this utility model;

[0037] Figure 10A This is one of the structural schematic diagrams of the present invention in use;

[0038] Figure 10B This is the second structural schematic diagram of the present invention in use;

[0039] Figure 11A This is one of the structural schematic diagrams of the adjusting upper turntable and collection tube rack of this utility model;

[0040] Figure 11B This is the second schematic diagram of the structure of the adjustable upper turntable and collection tube rack of this utility model;

[0041] Figure 11C This is the third schematic diagram of the structure of the adjustable upper turntable and collection tube rack of this utility model;

[0042] Figure 11D This is the fourth schematic diagram of the structure of the adjustable upper turntable and collection tube rack of this utility model;

[0043] Wherein: 1 is the outer rotating shaft, 2 is the bolt placement hole, 3 is the upper fixed plate, 4 is the clamping bolt, 5 is the lower fixed plate, 6 is the upper placement hole, 7 is the upper turntable, 8 is the lower placement hole, 9 is the lower turntable, 10 is the fixed shaft, 11 is the inner rotating shaft, 12 is the ball bearing, 13 is the base, 14 is the base, 15 is the resin column, 16 is the waste liquid box, 17 is the chute, 18 is the collection tube, 19 is the collection tube rack, 20 is the collection tube rack placement hole, 21 is the groove, 22 is the retaining edge, and 23 is the center hole. Detailed Implementation

[0044] The present invention will now be described in further detail with reference to the accompanying drawings.

[0045] like Figure 1As shown, this utility model includes an outer rotating shaft 1, an upper fixed plate 3, clamping bolts 4, an upper turntable 7, a lower turntable 9, a fixed shaft 10, an inner rotating shaft 11, a base 13, and a base 14. The lower end of the fixed shaft 10 is fixed to the base 14. The inner rotating shaft 11 is a hollow shaft, with its lower end fixed to the base 13 and its upper end closed. The fixed shaft 10 passes through the base 13 and is inserted into the inner rotating shaft 11. The base 13 can rotate relative to the base 14. The lower turntable 9 is fixed to the inner rotating shaft 11. The outer rotating shaft 1 is a hollow shaft with an open lower end and a closed upper end. The outer rotating shaft 1 covers the outside of the inner rotating shaft 11. Along the axis of the outer rotating shaft 1... Multiple bolt placement holes 2 are provided; the upper fixed plate 3 and the upper turntable 7 are both located above the lower turntable 9. The upper fixed plate 3 is sleeved on the outer rotating shaft 1, and a clamping bolt 4 is spirally connected to the upper fixed plate 3. The upper turntable 7 is rotatably sleeved on the outer rotating shaft 1 and supported by the upper fixed plate 3. The distance between the upper turntable 7 and the lower turntable 9 can be adjusted by inserting the clamping bolt 4 on the upper fixed plate 3 into the bolt placement holes 2 at different heights. After adjustment, the inner rotating shaft 11 is clamped by the clamping bolt 4, thereby realizing the linkage between the upper turntable 7 and the lower turntable 9. Placement holes for inserting resin columns 15 are provided on both the upper turntable 7 and the lower turntable 9.

[0046] In this embodiment, the resin column frame is injection molded from acrylic glass (PMMA). Acrylic glass is lightweight, durable, easy to process and design, and possesses excellent weather resistance and chemical stability, ensuring high safety. Figure 1 , Figure 2 As shown, the base 14 in this embodiment is a flat disc shape, and the fixing shaft 10 is a solid cylinder. The lower end of the fixing shaft 10 is fixed at the center of the top surface of the base 14.

[0047] like Figure 1 , Figures 3-7 As shown, the chassis 13 in this embodiment is a flat disc shape with a diameter smaller than that of the base 14. The chassis 13 has a central opening, and the lower end of the inner rotating shaft 11 is fixed at the center of the top surface of the chassis 13. The central opening of the chassis 13 communicates with the interior of the inner rotating shaft 11. The bottom surface of the chassis 13 has multiple concentric grooves 17 (three in this embodiment), and each groove 17 contains a ball bearing 12 for sliding contact with the top surface of the base 14.

[0048] In this embodiment, the lower turntable 9 is a disc, and the placement holes on the lower turntable 9 are called lower placement holes 8. There are multiple lower placement holes 8, which are evenly distributed along the circumference near the edge of the lower turntable 9. The lower turntable 9 is located in the middle of the inner rotating shaft 11. Below the lower turntable 9, there is a lower fixing plate 5 for reinforcement. The lower fixing plate 5 is a disc with a diameter smaller than that of the lower turntable 9. In this embodiment, the lower fixing plate 5, the inner rotating shaft 11, the base plate 13, and the lower turntable 9 are integrally injection molded.

[0049] In this embodiment, the upper turntable 7 is a disc with the same dimensions as the lower turntable 9. A central hole 23 is formed in the center of the upper turntable 7. Multiple placement holes 6 are located near the edge of the upper turntable 7 and are evenly spaced along the circumference. The number of upper placement holes 6 corresponds to the number of lower placement holes 8. The outer rotating shaft 1 passes through the central hole 23 on the upper turntable 7. The central hole 23 on the upper turntable 7 and the outer rotating shaft 1 are interference-fitted, thereby enabling the upper turntable 7 and the outer rotating shaft 1 to move together.

[0050] In this embodiment, the inner rotating shaft 11 is a hollow cylinder, and the inner diameter of the inner rotating shaft 11 is larger than the outer diameter of the fixed shaft 10; the outer rotating shaft 1 is a hollow cylinder, and the inner diameter of the outer rotating shaft 1 is larger than the outer diameter of the inner rotating shaft 11; the inner rotating shaft 11 is fitted onto the fixed shaft 10, and the top surface of the inner rotating shaft 11 is higher than the top surface of the fixed shaft 10; the outer rotating shaft 1 is fitted onto the inner rotating shaft 11, and the top surface of the outer rotating shaft 1 is higher than the top surface of the inner rotating shaft 11.

[0051] In this embodiment, the central opening of the upper fixed plate 3 has a diameter larger than the outer diameter of the outer rotating shaft 1, through which the outer rotating shaft 1 passes. The top of the upper fixed plate 3 extends radially outward to form an extension for supporting the upper turntable 7. The side surface of the upper fixed plate 3 has a threaded hole communicating with the central opening, and a clamping bolt 4 is threaded into the threaded hole. In this embodiment, there are two clamping bolts 4 in a set, with their axial center lines collinear and perpendicular to the axial center line of the upper fixed plate 3. Correspondingly, the bolt placement holes 2 on the outer rotating shaft 1 are arranged in multiple rows, with two in each row. The axial center lines of the two bolt placement holes 2 in each row are collinear and perpendicular to the axial center line of the outer rotating shaft 1. After the distance between the upper turntable 7 and the lower turntable 9 is adjusted, the two clamping bolts 4 are inserted through the two bolt placement holes 2 in the corresponding row and clamp the inner rotating shaft 11.

[0052] During installation, the base 13, inner rotating shaft 11, lower rotating disk 9, and lower fixed disk 5 are fitted onto the fixed shaft 10 from the top down until the ball bearings 12 on the bottom surface of the base 13 contact the top surface of the base 14, and the top of the inner rotating shaft 11 contacts the top of the fixed shaft 10. Then, the upper rotating disk 7 is installed on the outer rotating shaft 1, and the upper fixed disk 3 is fitted onto the lower end of the outer rotating shaft 1. The outer rotating shaft 1 is then fitted onto the inner rotating shaft 11 from the top down until the top of the outer rotating shaft 1 contacts the top of the inner rotating shaft 11. The distance between the upper rotating disk 7 and the lower rotating disk 9 is adjusted to the set distance. After adjustment, the two clamping bolts 4 on the upper fixed disk 3 are inserted into the corresponding bolt holes 2 on the outer rotating shaft 1, and the inner rotating shaft 11 is clamped. Finally, resin columns 15 are inserted into the corresponding set of upper placement holes 6 and lower placement holes 8.

[0053] like Figure 1 , Figure 8A , Figure 8B , Figures 9A-9D , Figure 10A , Figure 10B As shown in Figures 11-11D, a waste liquid box 16 with an open top and closed bottom can be placed on the chassis 13 of this embodiment for collecting waste liquid. The waste liquid box 16 is divided into two semicircles and is injection molded from polytetrafluoroethylene (PTFE). It has super chemical resistance and is almost unaffected by all strong acids (such as sulfuric acid and hydrochloric acid), strong alkalis (such as sodium hydroxide), organic solvents and oxidants. It has extremely strong chemical stability. A groove 21 is provided in the middle of the straight edge of each semicircle. The diameter of the circle formed by the grooves 21 on the two semicircles is larger than the outer diameter of the inner rotating shaft 11. The grooves 21 on the two semicircles clamp the inner rotating shaft 11 in the middle. Then, a semi-circular collection tube rack 19 can be placed above the waste liquid box 16. A groove 21 is opened in the middle of the straight edge of the collection tube rack 19. Multiple collection tube rack placement holes 20 are evenly opened in the circumferential direction near the edge of the collection tube rack 19. A collection tube 18 is inserted into the collection tube rack placement hole 20. The lower end of the resin column 15 can be inserted into the collection tube 18. The top arc edge of the collection tube rack 19 extends radially outward to form a retaining edge 22. The vertical edge of the retaining edge 22 is embedded in the waste liquid box 16, and the horizontal edge of the retaining edge 22 falls on the waste liquid box 16, thereby limiting the position of the collection tube rack 19.

[0054] In this embodiment, a collection tube rack 19 can also be placed separately on the chassis 13. The collection tube rack 19 is divided into two semicircles and is injection molded from acrylic glass (PMMA). A groove 21 is opened in the middle of the straight edge of each semicircle. The diameter of the circle formed by the grooves 21 on the two semicircles is larger than the outer diameter of the inner rotating shaft 11. The grooves 21 on the two semicircles clamp the inner rotating shaft 11 in the middle. A plurality of collection tube rack placement holes 20 are evenly opened along the circumferential direction near the edge of the collection tube rack 19. The number of collection tube rack placement holes 20 is the same as the number of upper placement holes 6 and lower placement holes 8, and they correspond one-to-one. A collection tube 18 is inserted into the collection tube rack placement hole 20, and the lower end of the resin column 15 can be inserted into the collection tube 18. In this embodiment, the shape of the collection tube rack placement hole 20 can be a circular flat-bottomed hole (e.g., Figure 9A (As shown), used to hold flat-bottomed centrifuge tubes, flat-bottomed PFA digestion cups, or flat-bottomed TFM high-efficiency corrosion-resistant sample dissolution vessels; or can have a circular conical bottom hole (such as...). Figure 9B (As shown), used to hold conical-bottom centrifuge tubes; or it can be a circular U-shaped bottom hole (as shown). Figure 9C As shown, it is used to place U-shaped bottom centrifuge tubes. By setting collection tube rack placement holes 20 with different openings, it can meet the needs of collection tubes 18 of different specifications, reducing the number of solution transfers.

[0055] In this embodiment, a waste liquid box 16 and a collection tube rack 19 can also be placed on the chassis 3. Both the waste liquid box 16 and the collection tube rack 19 are semi-circular. The waste liquid box 16 is open at the top and closed at the bottom. The collection tube rack 19 has a plurality of collection tube rack placement holes 20 evenly opened along the circumferential direction near the edge. A collection tube 18 is inserted into the collection tube rack placement hole 20. The lower end of the resin column 15 can be inserted into the collection tube 18. A groove 21 is opened in the middle of the straight edge of the waste liquid box 16 and the collection tube rack 19. The groove 21 on the two semi-circles clamps the inner rotating shaft 11 in the middle.

Claims

1. An adjustable resin column holder for laboratory element separation, characterized by: The system includes an outer rotating shaft (1), an upper fixed plate (3), clamping bolts (4), an upper turntable (7), a lower turntable (9), a fixed shaft (10), an inner rotating shaft (11), a base (13), and a base (14). The lower end of the fixed shaft (10) is fixed to the base (14). The inner rotating shaft (11) is a hollow shaft, and its lower end is fixed to the base (13). The upper end of the inner rotating shaft (11) is closed. The fixed shaft (10) passes through the base (13) and is inserted into the inner rotating shaft (11). The base (13) can rotate relative to the base (14). The lower turntable (9) is fixed on the inner rotating shaft (11). The outer rotating shaft (1) is a hollow shaft with an open lower end and a closed upper end. The outer rotating shaft (1) covers the outside of the inner rotating shaft (11). The outer rotating shaft (1) is mounted along the shaft. Multiple bolt placement holes (2) are provided; the upper fixed plate (3) and the upper turntable (7) are both located above the lower turntable (9). The upper fixed plate (3) is sleeved on the outer rotating shaft (1). The upper fixed plate (3) is spirally connected with clamping bolts (4). The upper turntable (7) can be rotatably sleeved on the outer rotating shaft (1) and supported by the upper fixed plate (3). The clamping bolts (4) on the upper fixed plate (3) extend into the bolt placement holes (2) at different heights to adjust the distance between the upper turntable (7) and the lower turntable (9). After adjustment, the clamping bolts (4) clamp the inner rotating shaft (11) to achieve linkage between the upper turntable (7) and the lower turntable (9). Placement holes for inserting resin columns (15) are provided on both the upper turntable (7) and the lower turntable (9).

2. The adjustable resin column holder for laboratory element separation according to claim 1, characterized in that: The chassis (13) has a central opening, and the lower end of the inner rotating shaft (11) is fixed to the top surface of the chassis (13). The central opening of the chassis (13) is connected to the interior of the inner rotating shaft (11). The bottom surface of the chassis (13) has multiple concentric grooves (17), and each groove (17) is equipped with a ball (12) for sliding contact with the top surface of the base (14).

3. The adjustable resin column holder for laboratory element separation according to claim 1, characterized in that: The lower turntable (9) is provided with a lower fixing plate (5) for reinforcement. The lower fixing plate (5), the inner rotating shaft (11), the lower turntable (9) and the chassis (13) are integrally injection molded.

4. The adjustable resin column holder for laboratory element separation of claim 1, wherein: The upper turntable (7) and the lower turntable (9) are discs of the same size. The upper turntable has a central hole (23) in the center. The placement holes on the upper turntable (7) are upper placement holes (6). There are multiple upper placement holes (6), which are evenly distributed along the circumference near the edge of the upper turntable (7). The placement holes on the lower turntable (9) are lower placement holes (8). There are multiple lower placement holes (8), which are evenly distributed along the circumference near the edge of the lower turntable (9). The number of upper placement holes (6) and lower placement holes (8) are the same and correspond one-to-one. The outer rotating shaft (1) passes through the central hole (23) on the upper turntable (7). The central hole (23) on the upper turntable (7) and the outer rotating shaft (1) are interference fit.

5. The adjustable resin column holder for laboratory element separation of claim 1, wherein: The upper fixed plate (3) has a central opening with a diameter larger than the outer diameter of the outer rotating shaft (1), through which the outer rotating shaft (1) passes. The top of the upper fixed plate (3) extends radially outward to form an extension for supporting the upper turntable (7). The side surface of the upper fixed plate (3) has a threaded hole communicating with the central opening, and a clamping bolt (4) is threaded into the threaded hole. The clamping bolt (4) is a set of two, and the two clamping bolts (4) are axially aligned. The center lines are collinear and intersect perpendicularly with the axial center line of the upper fixed plate (3); correspondingly, the bolt placement holes (2) on the outer rotating shaft (1) are in multiple rows, two in each row, and the axial center lines of the two bolt placement holes (2) in each row are collinear and intersect perpendicularly with the axial center line of the outer rotating shaft (1); after the distance between the upper rotating plate (7) and the lower rotating plate (9) is adjusted, the two clamping bolts (4) are inserted through the two bolt placement holes (2) in the corresponding row and clamp the inner rotating shaft (11).

6. The adjustable resin column holder for laboratory element separation of claim 1, wherein: The chassis (13) has a waste liquid box (16) with an open top and a closed bottom. The waste liquid box (16) is divided into two semicircles. Each semicircle has a groove (21) in the middle of its straight edge. The groove (21) on the two semicircles clamps the inner rotating shaft (11) in the middle.

7. The adjustable resin column holder for laboratory element separation according to claim 6, characterized in that: A semi-circular collection tube rack (19) is provided above the waste liquid box (16). A groove (21) is provided in the middle of the straight edge of the collection tube rack (19). Multiple collection tube rack placement holes (20) are evenly provided along the circumferential direction near the edge of the collection tube rack (19). A collection tube (18) is inserted into the collection tube rack placement hole (20). The top arc edge of the collection tube rack (19) extends radially outward to form a retaining edge (22). The vertical edge of the retaining edge (22) is embedded in the waste liquid box (16), and the horizontal edge of the retaining edge (22) falls on the waste liquid box (16), thereby limiting the position of the collection tube rack (19).

8. The adjustable resin column holder for laboratory element separation of claim 1, wherein: A collection tube rack (19) is placed on the chassis (13). The collection tube rack (19) is divided into two semicircles. A groove (21) is opened in the middle of the straight edge of each semicircle. The groove (21) on the two semicircles clamps the inner rotating shaft (11) in the middle. A number of collection tube rack placement holes (20) are evenly opened along the circumferential direction near the edge of the collection tube rack (19). The number of collection tube rack placement holes (20) is the same as the number of placement holes on the upper turntable (7) and the number of placement holes on the lower turntable (9), and they correspond one-to-one. A collection tube (18) is inserted into the collection tube rack placement hole (20).

9. The adjustable resin column holder for laboratory element separation of claim 1, wherein: Waste liquid box (16) and collection tube rack (19) are placed on the chassis (13). Both the waste liquid box (16) and the collection tube rack (19) are semi-circular. The waste liquid box (16) is open at the top and closed at the bottom. The collection tube rack (19) has multiple collection tube rack placement holes (20) evenly opened along the circumference near the edge. Collection tubes (18) are inserted into the collection tube rack placement holes (20). The waste liquid box (16) and the collection tube rack (19) have grooves (21) in the middle of their straight edges. The grooves (21) on the two semi-circles clamp the inner rotating shaft (11) in the middle.

10. An adjustable resin column holder for laboratory element separation according to claim 7, 8 or 9, characterized in that: The collection tube rack placement hole (20) is a circular flat-bottom hole, a circular conical-bottom hole, or a circular U-shaped bottom hole.

Images