A centrifuge tube kit

Abstract

This utility model discloses a centrifuge tube kit, including a centrifuge tube rack containing multiple centrifuge tubes. A storage cavity is located at the center of the upper end face of each centrifuge tube. An annular groove is located on the outer side of the storage cavity, outside the upper end face of the centrifuge tube. Above the annular groove is a centrifuge tube sleeve, which is threaded onto the outer surface of the top end of the centrifuge tube. An annular pusher plate, inserted into the annular groove, is fixed to the lower end face of the centrifuge tube sleeve. U-shaped push rods, slidably connected to the centrifuge tubes, are attached to both sides of the lower end face of the annular pusher plate. An adjustment head, located inside the storage cavity, is fixed between two of the U-shaped push rods. This utility model allows for adjustment of the storage cavity's capacity when storing liquid samples, ensuring that the loading volume inside the storage cavity does not exceed two-thirds of the total capacity. This technical solution improves the overall safety and reliability of the centrifuge tubes.

Description

Technical Field

[0001] This utility model relates to the field of centrifuge tube technology, specifically a centrifuge tube kit. Background Technology

[0002] Centrifuge tubes are laboratory instruments used for centrifugation operations and are widely used in fields such as biochemistry, molecular biology, medical testing, and chemical analysis. Centrifuge tubes are generally made of polypropylene and polycarbonate. Polypropylene centrifuge tubes have good chemical corrosion resistance and heat resistance, can be used in a wide temperature range, and are relatively inexpensive. Polycarbonate centrifuge tubes have high transparency, making it easy to observe samples, but are more expensive.

[0003] A centrifuge tube kit refers to a set of commonly used laboratory tools that includes centrifuge tubes, typically including centrifuge tubes, centrifuge tube racks, dropper tubes, and other components, which can help users better process samples and perform centrifugation.

[0004] However, when using centrifuge tubes, it is important to note that the loading volume should not exceed two-thirds of their capacity. If the loading volume exceeds two-thirds, the sample may overflow during centrifugation. However, when beginners use centrifuge tubes to collect liquid samples, they may exceed two-thirds of the capacity due to lack of operational experience. Therefore, this does not meet the existing needs, and we have proposed a centrifuge tube kit. Utility Model Content

[0005] The purpose of this invention is to provide a centrifuge tube kit to solve the problems mentioned in the background art, such as the need to ensure that the loading volume of centrifuge tubes does not exceed two-thirds of their capacity. If the loading volume exceeds two-thirds, the sample may overflow during centrifugation. However, when novices use this centrifuge tube to collect liquid samples, they may cause the loading volume to exceed two-thirds due to lack of operation skills.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a centrifuge tube kit, including a centrifuge tube rack, in which multiple centrifuge tubes are placed. A storage cavity is provided at the middle position of the upper end face of the centrifuge tubes. An annular groove is provided on the outer side of the storage cavity, located on the outer side of the upper end face of the centrifuge tubes. Above the annular groove, a centrifuge tube sleeve is provided, which is installed on the outer surface of the top end of the centrifuge tubes by a threaded structure. An annular push plate inserted into the annular groove is fixed on the lower end face of the centrifuge tube sleeve. A U-shaped push rod that is slidably connected to the centrifuge tubes is attached to both sides of the lower end face of the annular push plate. An adjustment head located inside the storage cavity is fixed between the two U-shaped push rods.

[0007] The adjusting head has a spring groove at its bottom, and the spring groove contains a spring. A metal sleeve is connected to the upper end of the spring, and a connecting rod is connected to the axis of the metal sleeve. The upper end of the connecting rod is fixed to the adjusting head.

[0008] Preferably, a fixed push rod is provided on the lower side of the front and rear end faces of the centrifuge tube and is slidably connected thereto. A connecting plate is fixedly connected to the side of the fixed push rod facing the spring, and a guide rod is laterally movable through the top and bottom ends of the connecting plate.

[0009] Preferably, both sides of the connecting plate facing the spring are fixed to a conical fixing head, and the conical fixing head is conical in shape.

[0010] Preferably, one side of the conical fixing head is provided with a fixing through hole located on the outer surface of the U-shaped push rod, and the position of the fixing push rod corresponds to the position of the fixing through hole.

[0011] Preferably, the outer surface of the adjusting head is in contact with the inner wall of the storage cavity, and the adjusting head and the storage cavity are slidably connected.

[0012] Preferably, the metal sleeve has an anti-detachment through hole located in the middle of the inner wall of the upper end of the spring groove, and the diameter of the metal sleeve is larger than the diameter of the inner wall of the anti-detachment through hole.

[0013] Preferably, the distance between the upper end face of the metal sleeve and the anti-detachment through hole is one-third of the distance between the upper end face of the adjusting head and the inlet of the storage cavity, and the outer surface of the metal sleeve is in contact with the inner wall of the spring groove.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention features an adjustment head located on the lower side of the storage chamber inside the centrifuge tube, which is fixed to the lower end face of the centrifuge tube sleeve. When the centrifuge tube sleeve is first removed to store a liquid sample in the storage chamber, the adjustment head located on the lower side of the storage chamber will be pushed upwards to one-third of the total height of the storage chamber by the spring force of a spring indirectly connected to it. This changes the capacity of the storage chamber when storing a liquid sample. This technical solution ensures that the loading amount inside the storage chamber will not exceed two-thirds of the total capacity, thereby improving the overall safety and reliability of the centrifuge tube. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of a single centrifuge tube in this utility model;

[0018] Figure 3 This utility model Figure 2 Enlarged view of the structure at point A in the middle;

[0019] Figure 4 This utility model Figure 3 Enlarged view of the structure at point B.

[0020] In the diagram: 1. Centrifuge tube; 2. Centrifuge tube sleeve; 3. Annular groove; 4. Annular push plate; 5. U-shaped push rod; 6. Adjusting head; 7. Spring groove; 8. Spring; 9. Metal sleeve; 10. Connecting rod; 11. Storage chamber; 12. Fixing through hole; 13. Connecting plate; 14. Conical fixing head; 15. Fixing push rod; 16. Centrifuge tube rack. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] The centrifuge tube 1 (model LXG), spring 8 (model JX110) and centrifuge tube rack 16 (model Kmf-02) mentioned in this utility model can be obtained from the market or through private customization.

[0023] Please see Figures 1 to 4 An embodiment of this utility model is provided: a centrifuge tube kit, including a centrifuge tube rack 16, in which a plurality of centrifuge tubes 1 are placed. A storage cavity 11 is provided at the middle position of the upper end face of the centrifuge tube 1. An annular groove 3 is provided on the outer side of the storage cavity 11, located on the outer side of the upper end face of the centrifuge tube 1. A centrifuge tube sleeve 2 is provided above the annular groove 3 and installed on the outer surface of the top end of the centrifuge tube 1 by a threaded structure. An annular push plate 4 inserted into the annular groove 3 is fixed on the lower end face of the centrifuge tube sleeve 2. A U-shaped push rod 5 that is slidably connected to the centrifuge tube 1 is attached to both sides of the lower end face of the annular push plate 4. An adjustment head 6 located inside the storage cavity 11 is fixed between the two U-shaped push rods 5.

[0024] A spring groove 7 is provided below the adjusting head 6, and a spring 8 is contained inside the spring groove 7. A metal sleeve 9 is connected to the upper end face of the spring 8, and a connecting rod 10 is connected to the axis of the metal sleeve 9. The upper end face of the connecting rod 10 is fixed to the adjusting head 6. An anti-detachment through hole is provided above the metal sleeve 9, located in the middle of the upper inner wall of the spring groove 7, and the diameter of the metal sleeve 9 is larger than the diameter of the inner wall of the anti-detachment through hole. The distance between the upper end face of the metal sleeve 9 and the anti-detachment through hole is one-third of the distance between the upper end face of the adjusting head 6 and the inlet of the storage chamber 11, and the outer surface of the metal sleeve 9 is in contact with the inner wall of the spring groove 7. An annular pusher fixed to the lower end face of the centrifuge tube sleeve 2 is provided on the lower side of the storage chamber 11 on the centrifuge tube 1 for collecting liquid. When the centrifuge tube sleeve 2 is first removed and the storage chamber 11 is used to store liquid samples, the adjusting head 6, which is located on the lower side inside the storage chamber 11, will be pushed upward by the spring force of the spring 8 connected to it through the connecting rod 10 and the metal sleeve 9. When the upper end face of the metal sleeve 9 is in contact with the upper inner wall of the spring groove 7 and the adjusting head 6 can no longer be pushed upward, the adjusting head 6 will move to one-third of the total height inside the storage chamber 11. This changes the capacity inside the storage chamber 11 when storing liquid samples. The above technical solution can ensure that the loading capacity inside the storage chamber 11 does not exceed two-thirds of the total capacity, thereby improving the overall safety and reliability of the centrifuge tube 1.

[0025] When the adjusting head 6 is pushed upward by the spring 8, the U-shaped push rod 5 fixed to it will move upward along with it.

[0026] After the liquid sample is collected, the annular push plate 4 fixed to the lower end face of the centrifuge tube sleeve 2 is aligned with the annular groove 3 located on the upper end face of the centrifuge tube 1 and inserted. As the annular push plate 4 goes deeper, it will come into contact with the U-shaped push rod 5 pushed upward by the spring 8. When the two come into contact, but the annular push plate 4 continues to go deeper, the U-shaped push rod 5 and the adjustment head 6 fixed thereto will be pushed downward together and squeeze the spring 8.

[0027] By pushing the adjustment head 6 downwards when installing the centrifuge tube sleeve 2, the capacity inside the storage chamber 11 can be changed back to its original size. This prevents liquid leakage inside the centrifuge tube 1 due to the small internal space of the storage chamber 11 when separating liquid samples located inside the centrifuge tube 1.

[0028] A fixed push rod 15 is slidably connected to the lower side of the front and rear ends of the centrifuge tube 1. A connecting plate 13 is fixedly connected to the face of the fixed push rod 15 facing the spring 8, and a guide rod is laterally inserted through the top and bottom ends of the connecting plate 13. A conical fixed head 14 is fixed to both sides of the face of the connecting plate 13 facing the spring 8, and the conical fixed head 14 is conical in shape. A fixed through hole 12 is provided on one side of the conical fixed head 14 on the outer surface of the U-shaped push rod 5, and the position of the fixed push rod 15 corresponds to the position of the fixed through hole 12. After the centrifugation of the liquid inside the centrifuge tube 1 is completed, the two fixed push rods 15 are pushed inward. As the fixed push rods 15 move, the conical fixed head 14 connected to them through the connecting plate 13 will be inserted into the fixed through hole 12 on the outer surface of the U-shaped push rod 5. By inserting the conical fixed head 14 into the fixed through hole 12, it is possible to prevent the adjusting head 6 from moving upward when the centrifuge tube 1 is opened again, thus preventing the separated liquid from being mixed again.

[0029] By setting the conical fixing head 14 to a conical shape, it is possible to prevent the centrifuge tube sleeve 2 from being not completely and tightly installed on the upper end face of the centrifuge tube 1, which would cause the fixing through hole 12 on the outer surface of the downward-pushing U-shaped push rod 5 to not be completely moved to a position parallel to the conical fixing head 14, ultimately resulting in the conical fixing head 14 being unable to be inserted into the fixing through hole 12.

[0030] The outer surface of the adjusting head 6 is in contact with the inner wall of the storage cavity 11, and the adjusting head 6 and the storage cavity 11 are slidably connected. This structure ensures the sealing between the adjusting head 6 and the storage cavity 11, thereby preventing liquid samples from leaking to the bottom of the adjusting head 6 when liquid is added into the storage cavity 11.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A centrifuge tube kit, comprising a centrifuge tube rack (16), characterized in that: The centrifuge tube rack (16) contains multiple centrifuge tubes (1). A storage cavity (11) is provided at the middle position of the upper end face of the centrifuge tube (1). An annular groove (3) is provided on the outer side of the storage cavity (11) and located on the outer side of the upper end face of the centrifuge tube (1). A centrifuge tube sleeve (2) is provided above the annular groove (3) and installed on the outer surface of the top end of the centrifuge tube (1) by a threaded structure. An annular push plate (4) is fixed on the lower end face of the centrifuge tube sleeve (2) and inserted into the annular groove (3). A U-shaped push rod (5) is attached to both sides of the lower end face of the annular push plate (4) and is slidably connected to the centrifuge tube (1). An adjustment head (6) located inside the storage cavity (11) is fixed between the two U-shaped push rods (5). The adjusting head (6) has a spring groove (7) below it, and the spring groove (7) contains a spring (8). The upper end face of the spring (8) is connected to a metal sleeve (9). The metal sleeve (9) is connected to a connecting rod (10) on its axis, and the upper end face of the connecting rod (10) is fixed to the adjusting head (6).

2. A centrifuge tube kit according to claim 1, characterized in that: The centrifuge tube (1) has a fixed push rod (15) slidably connected to the lower side of the front and rear end faces. The fixed push rod (15) is fixedly connected to a connecting plate (13) on the side facing the spring (8). The top and bottom ends of the connecting plate (13) are both laterally traversed by a guide rod.

3. A centrifuge tube kit according to claim 2, characterized in that: The connecting plate (13) is fixed to a conical fixing head (14) on both sides of the face facing the spring (8), and the conical fixing head (14) is conical in shape.

4. A centrifuge tube kit according to claim 3, characterized in that: The tapered fixing head (14) has a fixing through hole (12) on one side located on the outer surface of the U-shaped push rod (5), and the position of the fixing push rod (15) corresponds to the position of the fixing through hole (12).

5. A centrifuge tube kit according to claim 1, characterized in that: The outer surface of the adjustment head (6) is in contact with the inner wall of the storage cavity (11), and the adjustment head (6) and the storage cavity (11) are slidably connected.

6. A centrifuge tube kit according to claim 1, characterized in that: The metal sleeve (9) is provided with an anti-detachment through hole located in the middle of the inner wall of the upper end of the spring groove (7), and the diameter of the metal sleeve (9) is larger than the diameter of the inner wall of the anti-detachment through hole.

7. A centrifuge tube kit according to claim 6, characterized in that: The distance between the upper end face of the metal sleeve (9) and the anti-detachment through hole is one-third of the distance between the upper end face of the adjusting head (6) and the entrance of the storage cavity (11), and the outer surface of the metal sleeve (9) is in contact with the inner wall of the spring groove (7).

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