A balancing device for solution centrifugation
By designing a balancing device for solution centrifugation, and utilizing the principles of hydrostatics and a pan balance to correct errors, the problems of cumbersome operation and low precision in solution balancing in existing technologies have been solved. This achieves efficient and accurate solution balancing, and is suitable for solutions with significant weight differences after dispensing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TECON BIOPHARMACEUTICAL CO LTD
- Filing Date
- 2025-04-16
- Publication Date
- 2026-07-10
AI Technical Summary
Existing solution balancing devices are cumbersome to operate, lack precision, and cannot effectively balance solutions with significant weight differences after dispensing, affecting the accuracy of experimental results and the lifespan of the equipment.
A balancing device comprising a centrifuge bottle, a tray balance, and a concave structure was designed. It utilizes the principle of hydrostatics to achieve automatic balancing through a balancing U-shaped tube, and combines the tray balance to correct weight errors, ensuring efficient and accurate solution balancing.
It achieves simple and efficient solution balancing, shortens balancing time, improves balancing accuracy, reduces equipment wear and operating costs, and is suitable for balancing solutions with large weight differences.
Smart Images
Figure CN224475136U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of centrifugal balancing technology, specifically to a balancing device for solution centrifugation. Background Technology
[0002] When using a centrifuge in the laboratory, it is essential to ensure that the solution is balanced. If the solution is not properly balanced, the rotor will be unbalanced, potentially causing it to wobble. This rotor imbalance applies uneven forces to the rotor shaft, leading to wear on the rotor and shaft, and shortening the centrifuge's lifespan. Furthermore, an unbalanced solution can cause the rotor to become eccentric, potentially resulting in serious accidents. Therefore, operators must always ensure that the solution is balanced when operating a centrifuge to guarantee laboratory safety and the proper functioning of the equipment.
[0003] Existing solutions are balanced primarily through two methods: 1. Manually adding solution or weights to achieve equal weight on both sides and meet balancing requirements. However, manual balancing often suffers from low accuracy; it is also inefficient, requires repeated balancing, and is cumbersome. When adding small amounts of solution, repeated balancing using pipettes or other instruments increases the risk of sample contamination and prolongs balancing time, affecting sample homogeneity. Adding weights, while not affecting the sample, still requires repeated balancing, which is tedious and results in significant balancing errors. These methods severely impact the accuracy of experimental results and consume considerable experimental time. 2. Automated balancing using a centrifuge. While centrifuges can automatically balance, they are expensive, cannot automatically balance samples with significant weight differences, and each balancing operation causes significant wear and tear on the centrifuge.
[0004] Therefore, those skilled in the art need a new balancing device with the following advantages: 1. Simple operation and short balancing time. 2. Automatic balancing with high balancing accuracy. 3. Capable of balancing solutions with significant weight differences after dispensing. Utility Model Content
[0005] This utility model aims to provide a balancing device for solution centrifugation, solving the problem that existing balancing devices cannot simultaneously guarantee simple operation and high balancing accuracy while meeting the balancing requirements of solutions with significant weight differences after dispensing. Therefore, this utility model provides a balancing device for solution centrifugation, comprising:
[0006] The centrifuge bottle includes: a centrifuge bottle body, a sealing gasket, and a bottom sleeve disposed at the bottom of the centrifuge bottle body, wherein the bottom sleeve is detachably connected to the centrifuge bottle; a support structure is also disposed inside the bottom sleeve, and the support structure is connected to the sealing gasket.
[0007] A pallet balance, wherein a balancing U-shaped tube is provided on the pallet balance, and the pallet balance also has an opening that communicates with the balancing U-shaped tube;
[0008] The concave structure is located inside the bottom sleeve of the centrifuge bottle. The concave structure fits into the sealing gasket at the bottom of the centrifuge bottle to ensure the sealing of the centrifuge bottle. The concave structure is provided with a connecting hole for connecting the centrifuge bottle to the balancing U-tube.
[0009] Optionally, the support structure consists of multiple support rods extending from the bottom sleeve of the centrifuge bottle, and the support rods are cuboid structures with the outer periphery of the sealing gasket.
[0010] Optionally, the concave structure is a circular concave structure located at the center of the inside of the bottom sleeve of the centrifuge bottle, and a circular connecting hole is provided at the center of the circular concave structure.
[0011] Optionally, the inner diameter of the concave structure is the same as the inner diameter of the sealing gasket, so as to ensure that the concave structure fits into the bottom sealing gasket of the centrifuge bottle and ensures the sealing performance of the centrifuge bottle.
[0012] Optionally, a circular groove is provided at the bottom position of the outer side of the bottom sleeve of the centrifuge bottle; the circular groove is fitted and connected with the convex sealing ring at the position of the tray on the balance to achieve the connection and sealing of the centrifuge bottle and the balancing U-tube.
[0013] Optionally, a clamp is provided at the position where the annular groove and the convex sealing ring are fitted and connected to secure them together, so as to ensure sealing.
[0014] Optionally, the bottom sleeve of the centrifuge bottle is tightly connected to the centrifuge bottle body via a threaded structure; and / or,
[0015] The centrifuge bottle consists of two 500ml bottles. Each bottle is 160mm high and 68mm in inner diameter. A maximum liquid volume mark is marked 15mm from the bottle opening. A bottom sleeve is located 70mm from the bottom of each bottle. After removing the bottom sleeve, the supporting structure is visible 120mm from the bottle opening inside the centrifuge bottle. And / or,
[0016] The concave structure is a circular concave shape with an inner diameter of 28 mm, located at the center of the bottom sleeve of the centrifuge bottle, and the communicating hole is a circular hole with an inner diameter of 6 mm, located at the center of the concave structure; and / or,
[0017] The sealing gasket is a sealing gasket with an inner diameter of 28 mm and a thickness of 3 mm; the support structure consists of four support rods extending from the bottom sleeve of the centrifuge bottle, which divide the perimeter of the sealing gasket into four equal parts; each support rod is a cuboid structure with a length of 30 mm and a width of 10 mm, and the distance between the center of the connection point between the support rod and the inner wall of the centrifuge bottle is 53.38 mm, so as to divide the perimeter of the inner wall of the centrifuge bottle into four equal parts.
[0018] Optionally, the convex sealing ring is embedded in the tray of the balance, the convex sealing ring having a width of 2mm, an inner diameter of 56mm, and a convex dimension of 2mm; and / or,
[0019] The pan balance has a disc with an inner diameter of 68 mm, and a 6 mm circular hole at the center of the disc for connection with a U-shaped tube; the balancing U-shaped tube has an inner diameter of 6 mm, a total length of 353.9 mm, and a total volume of 10 ml.
[0020] A method for using a balancing device for solution centrifugation, comprising the following steps:
[0021] S1, loosen the bottom sleeves of the two centrifuge bottles; allow the liquid inside the centrifuge bottle to flow into the communicating hole of the bottom sleeve of the centrifuge bottle through the gap of the support structure at the bottom of the centrifuge bottle;
[0022] S2, place the two centrifuge bottles on the tray balance, and fit the annular groove at the bottom of the sleeve of the centrifuge bottle with the convex sealing ring at the tray position on the tray balance to achieve a connection and seal between the centrifuge bottle and the balancing U-tube; and fix the two together with a clamp.
[0023] S3, inject bacterial solution into one of the two centrifuge bottles until the bacterial solution is near the maximum liquid volume mark of the centrifuge bottle, then stop adding liquid. After stopping adding liquid, the balancing of the two centrifuge bottles is completed.
[0024] S4, tighten the bottom sleeves of the two centrifuge bottles; make the sealing gasket at the bottom of the centrifuge bottle completely fit into the concave structure of the bottom sleeve of the centrifuge bottle, thereby sealing the connecting hole at the bottom of the centrifuge bottle and the bottom of the bottom sleeve of the centrifuge bottle, so that the liquid in the centrifuge bottle cannot flow out or flow in.
[0025] S5, loosen the clamp and remove the centrifuge bottle, weigh the tare weight of the two centrifuge bottles after balancing and record it;
[0026] In the above steps, if the same liquid is used for continuous balancing, there is no need to clean the balancing U-tube. If the balancing solution is changed, the balancing U-tube must be cleaned with pure water first.
[0027] The technical solution of this utility model has the following advantages:
[0028] 1. The balancing device for solution centrifugation provided by this utility model includes:
[0029] The centrifuge bottle includes: a centrifuge bottle body, a sealing gasket, and a bottom sleeve disposed at the bottom of the centrifuge bottle body, wherein the bottom sleeve is detachably connected to the centrifuge bottle; a support structure is also disposed inside the bottom sleeve, and the support structure is connected to the sealing gasket.
[0030] A pallet balance, wherein a balancing U-shaped tube is provided on the pallet balance, and the pallet balance also has an opening that communicates with the balancing U-shaped tube;
[0031] The concave structure is located inside the bottom sleeve of the centrifuge bottle. The concave structure fits into the sealing gasket at the bottom of the centrifuge bottle to ensure the sealing of the centrifuge bottle. The concave structure is provided with a connecting hole for connecting the centrifuge bottle to the balancing U-tube.
[0032] In this invention, the aforementioned balancing device effectively replaces the manual balancing method and the automatic balancing method of centrifuges in the prior art. This invention utilizes the hydrostatic principle present in the balancing U-tube. When the liquid levels at both ends of the balancing U-tube are different, the pressure difference within the U-tube causes liquid level displacement, thus keeping the liquid levels at both ends of the U-tube horizontal. Simultaneously, the balance can compensate for errors caused by the weight of the centrifuge bottle itself. This solution combines these two structures to create a simple and efficient balancing device. Compared to existing technologies, this patent, by combining a balance with a U-tube, achieves automatic balancing without the need to add centrifuged material or counterweights, significantly shortening balancing time while maintaining high balancing accuracy. Moreover, this solution can still achieve automatic balancing for solutions with significant weight differences after dispensing. Furthermore, the balancing device suffers less wear and tear, effectively reducing operating costs compared to centrifuges.
[0033] 2. The balancing device for solution centrifugation provided by this utility model has the same inner diameter as the inner diameter of the concave structure as the sealing gasket, so as to ensure that the concave structure fits into the bottom sealing gasket of the centrifuge bottle and ensures the sealing performance of the centrifuge bottle.
[0034] The aforementioned concave structure can effectively fit and connect with the bottom sealing gasket at the bottom of the centrifuge bottle, thereby ensuring the sealing of the bottom of the centrifuge bottle.
[0035] 3. The balancing device for solution centrifugation provided by this utility model has an annular groove at the bottom position of the outer side of the bottom sleeve of the centrifuge bottle; the annular groove is fitted and connected to the convex sealing ring at the position of the tray on the pan balance to achieve the connection and sealing of the centrifuge bottle and the balancing U-tube.
[0036] The position where the annular groove and the convex sealing ring fit together is also provided with a clamp to fix the two together, so as to ensure the sealing performance.
[0037] In this invention, a circular groove is provided at the bottom outer side of the sleeve of the centrifuge bottle. This circular groove fits into the convex sealing ring on the tray of the balance, effectively ensuring the sealing performance of the connection between the centrifuge bottle and the balancing U-tube, and ensuring a stable and reliable connection between the solution inside the centrifuge bottle and the balancing U-tube. Furthermore, the aforementioned clamp further strengthens the connection between the centrifuge bottle and the balancing U-tube.
[0038] 4. The method of using the balancing device provided by this utility model uses the above-mentioned balancing device for solution centrifugation, and therefore has all the advantages of a balancing device. Attached Figure Description
[0039] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0040] Figure 1 A schematic diagram of the balancing device provided by this utility model;
[0041] Figure 2 A schematic diagram of a tray balance structure with a balancing U-shaped tube installed according to this utility model;
[0042] Figure 3 A top view of the tray structure on the tray balance provided by this utility model;
[0043] Figure 4 A schematic diagram of the connection structure between the centrifuge bottle and the bottom sleeve of the centrifuge bottle provided by this utility model;
[0044] Figure 5 A schematic diagram showing the position of the support structure and sealing gasket on the centrifuge bottle provided by this utility model;
[0045] Figure 6 A bottom view of the interior of a centrifuge bottle provided by this utility model;
[0046] Figure 7 A top view of the interior of the bottom sleeve of the centrifuge bottle provided by this utility model;
[0047] Figure 8 A bottom view of the centrifuge bottle bottom sleeve provided by this utility model;
[0048] Figure 9 A schematic diagram of the clamp structure provided by this utility model.
[0049] Explanation of reference numerals in the attached figures:
[0050] 1-Centrifuge bottle; 2-Centrifuge bottle bottom sleeve; 3-Support structure; 4-Sealing gasket; 5-Balancing U-tube; 6-Concave structure; 7-Connecting hole; 8-Pan balance; 9-Circular groove; 10-Clamp; 11-Maximum liquid volume mark; 12-Centrifuge bottle body. Detailed Implementation
[0051] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0052] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and 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 of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0053] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0054] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.
[0055] Example 1
[0056] See Figure 1 and Figure 2 , Figure 1 A schematic diagram of the balancing device structure in an embodiment of this utility model is shown. Figure 2 A schematic diagram of a tray balance structure with a balancing U-shaped tube installed in an embodiment of the present invention is shown.
[0057] A balancing device for solution centrifugation is described, comprising:
[0058] Centrifuge bottle 1, such as Figure 4 and Figure 5 The diagram shows a centrifuge bottle and a bottom sleeve structure. The centrifuge bottle 1 includes: a centrifuge bottle body 12, a sealing gasket 4, and a bottom sleeve 2 disposed at the bottom of the centrifuge bottle body 12. The bottom sleeve 2 is tightly connected to the centrifuge bottle body 12 via a threaded structure. A support structure 3 is also provided inside the bottom sleeve 2, and this support structure 3 is connected to the sealing gasket 4.
[0059] Pallet balance 8, such as Figure 2 As shown, the pallet balance 8 is provided with a balancing U-tube 5, and the pallet balance 8 also has an opening that communicates with the balancing U-tube 5;
[0060] Concave structure 6, such as Figure 7 As shown, the concave structure 6 is disposed inside the bottom sleeve 2 of the centrifuge bottle. The concave structure 6 fits into the sealing gasket 4 at the bottom of the centrifuge bottle 1 to ensure the sealing of the centrifuge bottle 1. The concave structure 6 is provided with a connecting hole 7 for connecting the centrifuge bottle 1 to the balancing U-tube 5.
[0061] In this embodiment, refer to Figure 5 and Figure 6 , Figure 5 A schematic diagram showing the support structure and sealing gasket position on the centrifuge bottle in an embodiment of this utility model is provided. Figure 6 The diagram shows a bottom view of the interior of a centrifuge bottle in an embodiment of the present invention. The support structure 3 consists of multiple support rods extending from the bottom sleeve 2 of the centrifuge bottle, and each support rod is a cuboid structure with the outer periphery of the sealing gasket 4.
[0062] In this embodiment, as Figure 7The image shows a top view of the interior of the bottom sleeve of the centrifuge bottle. The concave structure 6 is a circular recess located at the center of the interior of the bottom sleeve 2 of the centrifuge bottle, and a circular connecting hole 7 is provided at the center of the circular recess. The inner diameter of the concave structure 6 is the same as the inner diameter of the sealing gasket 4 to ensure that the concave structure 6 fits into the bottom sealing gasket 4 of the centrifuge bottle 1, thus ensuring the airtightness of the centrifuge bottle 1.
[0063] In this embodiment, as Figure 3 The diagram shows a top view of the tray structure on the balance. A circular groove 9 is also provided at the bottom outer side of the centrifuge bottle bottom sleeve 2; as shown... Figure 8 As shown, the annular groove 9 engages with the convex sealing ring on the tray of the balance 8 to achieve a sealed connection between the centrifuge bottle 1 and the balancing U-tube 5. Further, as... Figure 1 and Figure 9 As shown, at the position where the annular groove 9 and the convex sealing ring are fitted and connected, a clamp 10 is also provided to fix the two together to ensure sealing.
[0064] In this embodiment, experimental results of the balancing device are provided based on the following equipment parameters. The specific parameters of the balancing device are as follows: the centrifuge bottles 12 consist of two bottles, each with a capacity of 500ml. The height of each centrifuge bottle 12 is 160mm, and its inner diameter is 68mm. A maximum liquid volume graduation line is marked 15mm from the bottle opening. The bottom sleeve 2 of the centrifuge bottle is located 70mm from the bottom of the centrifuge bottle 12. After removing the bottom sleeve 2 from the bottom of the centrifuge bottle 12, the supporting structure is visible 120mm from the bottle opening inside the centrifuge bottle. Furthermore, the concave structure 6 is a circular concave structure with an inner diameter of 28mm located at the center of the bottom sleeve 2 of the centrifuge bottle, and the connecting hole 7 is a circular hole with an inner diameter of 6mm located at the center of the concave structure 6. Furthermore, the sealing gasket 4 is a sealing gasket with an inner diameter of 28 mm and a thickness of 3 mm; the support structure 3 consists of four support rods extending from the centrifuge bottle 1, which divide the perimeter of the sealing gasket 4 into four equal parts; each support rod is a cuboid structure with a length of 30 mm and a width of 10 mm, and the distance between the center of the connection point between the support rod and the inner wall of the centrifuge bottle 1 is 53.38 mm, thus dividing the perimeter of the inner wall of the centrifuge bottle 1 into four equal parts. Additionally, the convex sealing ring is embedded in the tray of the balance 8, and the convex sealing ring has a width of 2 mm, an inner diameter of 56 mm, and a convex dimension of 2 mm. The balance 8 has a disc with an inner diameter of 68 mm, and a 6 mm circular hole at the center of the disc for connection to a U-shaped tube; the balancing U-shaped tube 5 has an inner diameter of 6 mm, a total length of 353.9 mm, and a total volume of 10 ml.
[0065] Experimental results of the balancing device:
[0066]
[0067] Randomly selected weight balancing results:
[0068]
[0069] A method for using a balancing device for solution centrifugation, wherein the balancing device achieves solution balancing, includes the following steps:
[0070] S1, loosen the bottom sleeves 2 of the two centrifuge bottles 1; allow the liquid inside the centrifuge bottle body 12 to flow into the communicating hole 7 of the bottom sleeve 2 of the centrifuge bottle through the gap of the support structure 3 at the bottom of the centrifuge bottle 1.
[0071] S2, place the two centrifuge bottles 1 on the tray balance 8, and fit the annular groove 9 at the bottom of the bottom sleeve 2 of the centrifuge bottle with the convex sealing ring at the tray position on the tray balance 8 to achieve the connection and sealing of the centrifuge bottle 1 and the balancing U-tube 5; and fix the two together with the clamp 10.
[0072] S3, inject bacterial solution into one of the two centrifuge bottles 1 until the bacterial solution is near the maximum liquid volume mark 11 of the centrifuge bottle 1, then stop adding liquid. After stopping adding liquid, the balancing work of the two centrifuge bottles 1 is completed.
[0073] S4, tighten the centrifuge bottle bottom sleeves 2 on the two centrifuge bottles 1; make the sealing gasket 4 at the bottom of the centrifuge bottle 1 completely fit with the concave structure 6 of the centrifuge bottle bottom sleeve 2, thereby sealing the connecting hole 7 at the bottom of the centrifuge bottle 1 and the bottom of the centrifuge bottle bottom sleeve 2, so that the liquid in the centrifuge bottle 1 cannot flow out or flow in.
[0074] S5, loosen the clamp 10 and remove the centrifuge bottle 1, weigh the two centrifuge bottles 1 after tare after balancing and record the weight;
[0075] In the above steps, if the same liquid is used for continuous balancing, it is not necessary to clean the balancing U-tube 5. If the balancing solution is changed, the balancing U-tube 5 must be cleaned with pure water first.
[0076] Of course, in this embodiment, the specific structure of the support structure 3 is not specifically limited. In other embodiments, the support structure 3 may also be composed of a support column, a support plate or other support components.
[0077] Of course, in this embodiment, the specific shape of the concave structure 6 is not specifically limited. In other embodiments, the concave structure 6 is a square concave structure located at the center of the inside of the bottom sleeve 2 of the centrifuge bottle, or it can be a concave structure of other shapes. The connecting hole 7 can also be located at other positions other than the center of the concave structure 6 as needed.
[0078] Of course, in this embodiment, the connection method between the bottom sleeve 2 of the centrifuge bottle and the centrifuge bottle 1 is not specifically limited. In other embodiments, the bottom sleeve 2 of the centrifuge bottle and the centrifuge bottle 1 can also be connected by a snap-fit structure or a friction surface.
[0079] Of course, in this embodiment, the size parameters of the balancing device are not specifically limited. In other embodiments, the specific dimensions of the centrifuge bottle 1, the bottom sleeve 2 of the centrifuge bottle, the support structure, the sealing gasket 4, and the concave structure 6 can be adjusted as needed.
[0080] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.
Claims
1. A balancing device for solution centrifugation, characterized in that, include: Centrifuge bottle (1), the centrifuge bottle (1) includes: centrifuge bottle body (12), sealing gasket (4), and centrifuge bottle bottom sleeve (2) disposed at the bottom of the centrifuge bottle body (12), the centrifuge bottle bottom sleeve (2) is detachably connected to the centrifuge bottle (1); a support structure (3) is also provided inside the centrifuge bottle bottom sleeve (2), the support structure (3) is connected to the sealing gasket (4); A pallet balance (8) is provided with a balancing U-tube (5), and the pallet balance (8) also has an opening that communicates with the balancing U-tube (5); The concave structure (6) is located inside the bottom sleeve (2) of the centrifuge bottle. The concave structure (6) fits into the sealing gasket (4) at the bottom of the centrifuge bottle (1) to ensure the sealing of the centrifuge bottle (1). The concave structure (6) is provided with a connecting hole (7) for connecting the centrifuge bottle (1) to the balancing U-tube (5).
2. The balancing device for solution centrifugation according to claim 1, characterized in that, The support structure (3) consists of multiple support rods extending from the bottom sleeve (2) of the centrifuge bottle, and the support rods are cuboid structures with the outer periphery of the sealing gasket (4).
3. The balancing device for solution centrifugation according to claim 1, characterized in that, The concave structure (6) is a circular concave structure located at the center of the bottom sleeve (2) of the centrifuge bottle, and a circular connecting hole (7) is provided at the center of the circular concave structure.
4. The balancing device for solution centrifugation according to claim 3, characterized in that, The inner diameter of the concave structure (6) is the same as the inner diameter of the sealing gasket (4) to ensure that the concave structure (6) fits into the bottom sealing gasket (4) of the centrifuge bottle (1) and ensures the sealing of the centrifuge bottle (1).
5. The balancing device for solution centrifugation according to claim 1, characterized in that, A circular groove (9) is provided at the bottom of the outer side of the bottom sleeve (2) of the centrifuge bottle; the circular groove (9) is fitted and connected with the convex sealing ring at the tray position of the tray balance (8) to realize the connection and sealing of the centrifuge bottle (1) and the balancing U-tube (5).
6. The balancing device for solution centrifugation according to claim 5, characterized in that, The circular groove (9) and the external convex sealing ring are fitted together at the position where they are connected and fixed together, and a clamp (10) is provided to fix the two together to ensure sealing.
7. The balancing device for solution centrifugation according to claim 2, characterized in that, The bottom sleeve (2) of the centrifuge bottle is tightly connected to the centrifuge bottle body (12) by a threaded structure; and / or, The centrifuge bottle (12) consists of two bottles, each with a capacity of 500ml. The centrifuge bottle (12) has a height of 160mm and an inner diameter of 68mm. The maximum liquid volume mark is marked 15mm from the bottle opening. The bottom sleeve (2) of the centrifuge bottle (12) is located 70mm from the bottom of the centrifuge bottle (12). After removing the bottom sleeve (2) from the bottom of the centrifuge bottle (12), the supporting structure can be seen inside the centrifuge bottle 120mm from the bottle opening. And / or, The concave structure (6) is a circular concave structure with an inner diameter of 28 mm, located at the center of the bottom sleeve (2) of the centrifuge bottle, and the connecting hole (7) is a circular hole with an inner diameter of 6 mm, located at the center of the concave structure (6); and / or, The sealing gasket (4) is a sealing gasket with an inner diameter of 28 mm and a thickness of 3 mm; the support structure (3) consists of 4 support rods extending from the bottom sleeve (2) of the centrifuge bottle, and the 4 support rods divide the perimeter of the sealing gasket (4) into four equal parts; the support rod is a cuboid structure with a length of 30 mm and a width of 10 mm, and the distance between the center of the connection point between the support rod and the inner wall of the centrifuge bottle (1) is 53.38 mm, so as to divide the perimeter of the inner wall of the centrifuge bottle (1) into four equal parts.
8. The balancing device for solution centrifugation according to claim 5, characterized in that, The convex sealing ring is embedded in the upper tray of the balance (8). The convex sealing ring has a width of 2mm, an inner diameter of 56mm, and a convex dimension of 2mm; and / or, The pan balance (8) has a disc with an inner diameter of 68 mm, and a 6 mm circular hole at the center of the disc that is connected to a U-shaped tube; the balancing U-shaped tube (5) has an inner diameter of 6 mm, a total length of 353.9 mm, and a total volume of 10 ml.