A high-strength double-layer explosion-proof centrifuge tube

Abstract

The present invention relates to the technical field of centrifuge tubes, and specifically to a high-strength double-layer explosion-proof centrifuge tube, comprising an outer shell, an inner shell being arranged inside the outer shell, and a screw pipe joint being integrally formed on the top of the outer shell, a sealing sleeve being screwed on the top of the screw pipe joint, and a positioning sleeve being fixed to the bottom surface of the top plate of the sealing sleeve; the beneficial effect is as follows: the high-strength double-layer explosion-proof centrifuge tube proposed by the present invention, the double-layer structure of the outer shell and the inner shell greatly enhances the pressure resistance and explosion-proof performance of the centrifuge tube, and can maintain structural integrity even under high-pressure and high-speed centrifugation conditions, effectively preventing sample leakage and safety hazards caused by rupture.

Description

Technical Field

[0001] The invention relates to the field of centrifuge tubes, in particular to a high-strength double-layer explosion-proof centrifuge tube. Background Art

[0002] Centrifuge tubes are indispensable experimental tools in numerous fields, including biochemistry, molecular biology, medical diagnostics, and materials science, and are widely used in sample separation, purification, extraction, and reaction processes. Traditional centrifuge tubes typically utilize a single-layer structure, often made of plastic materials such as polypropylene (PP) and polycarbonate (PC). However, these single-layer centrifuge tubes often exhibit the following deficiencies when faced with complex experimental conditions such as high rotation speeds, high pressures, and extreme temperatures:

[0003] Insufficient strength: The single-layer structure makes the centrifuge tube prone to deformation or even rupture when subjected to high-speed rotation. Especially during high-speed centrifugation operations, the risk of rupture increases significantly, which may cause sample leakage, affect the accuracy of experimental results, and even cause damage to operators and experimental equipment.

[0004] Poor sealing: Traditional centrifuge tubes typically rely on a simple cap structure for sealing. This seal can easily loosen during high-speed rotation, leading to sample leakage or gas exchange, affecting experimental results. This sealing issue is particularly prominent in experiments that require strict control of the gas atmosphere or prevention of sample volatilization.

[0005] Inconvenient labeling: During experiments, centrifuge tubes are often loaded with different types of samples. To distinguish these samples, labels are usually affixed to the tubes. However, traditional centrifuge tubes have limited label placement and are easily removed or blurred due to friction during centrifugation, causing inconvenience to experimenters.

[0006] Single function: Traditional centrifuge tubes often only have a single separation function and lack additional auxiliary functions such as support and fixation. This requires additional auxiliary tools during the experimental operation, increasing the complexity and cost of the experiment. Summary of the Invention

[0007] The object of the present invention is to provide a high-strength double-layer explosion-proof centrifuge tube to solve the problems raised in the above background technology.

[0008] To achieve the above-mentioned objectives, the present invention provides the following technical solution: a high-strength double-layer explosion-proof centrifuge tube, comprising an outer shell, an inner shell is provided inside the outer shell, and a screw pipe head is integrally formed on the top of the outer shell, a sealing sleeve is threaded on the top of the screw pipe head, and a positioning sleeve is fixed to the bottom surface of the top plate of the sealing sleeve.

[0009] Preferably, a support rod is fixed to the top surface of the bottom plate of the outer shell, and the top end of the support rod is inserted into the first card slot, which is a spherical slot and is opened on the bottom surface of the inner shell. A rubber clamp is fixed to the top end of the support rod, and the rubber clamp is spherical, and the diameter of the rubber clamp is larger than the slot diameter of the first card slot.

[0010] Preferably, a gasket is fixed to the inner ring of the screw pipe joint, and a lap ring is fixed on the tube body of the inner shell. The lap ring is an inverted "convex" shaped circular ring plate. The bottom end of the lap ring is inserted into the second card groove. The second card groove is an annular groove. A rubber ring is fixed to the bottom end of the lap ring. The rubber ring is a ring plate structure with a circular cross-section. The rubber ring is inserted into the second card groove.

[0011] Preferably, a pick-out groove is provided at the top end of the screw pipe joint, and the pick-out groove is an annular groove.

[0012] Preferably, a sealing gasket is fixed to the top of the outer shell, the sealing gasket is a T-shaped circular plate, and the bottom end of the sealing gasket is inserted into the pipe opening of the inner shell.

[0013] Preferably, a sealing piece is integrally formed on the bottom surface of the sealing gasket, and the sealing piece is an annular plate structure, and the sealing piece is inserted between the screw pipe head and the inner shell.

[0014] Preferably, the sealing sleeve is a T-shaped cylinder, and a finger groove is provided on the top plate of the sealing sleeve. The finger groove is an arc-shaped groove, and there are two finger grooves, which are symmetrically distributed about the sealing sleeve.

[0015] Preferably, the top surface of the sealing sleeve is provided with a notch, which is a square groove. A transparent sheet is fixed between two parallel side walls of the notch. The top surface of the transparent sheet is coplanar with the top surface of the sealing sleeve, and a note is stored between the transparent sheet and the notch.

[0016] Preferably, a plurality of rubber protrusions are fixed on the bottom surface of the notch and the bottom surface of the transparent sheet.

[0017] Preferably, the positioning sleeve is a truncated cone-shaped tube, and a rubber ring is fixed to the inner ring opening of the positioning sleeve.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The high-strength double-layer explosion-proof centrifuge tube proposed in the present invention has a double-layer structure of the outer shell and the inner shell, which greatly enhances the pressure resistance and explosion-proof performance of the centrifuge tube. It can maintain structural integrity even under high-pressure and high-speed centrifugation conditions, effectively preventing sample leakage and safety hazards caused by rupture.

[0020] The inner shell is removably mounted within the outer shell. This design allows users to flexibly select the inner shell's material and specifications based on experimental needs, enhancing the versatility and flexibility of the centrifuge tube. Furthermore, once the inner shell is removed, both the outer shell and the inner shell can be used independently, increasing flexibility.

[0021] By using sealing gaskets, rubber clamps, rubber rings and other components in conjunction with each other, high sealing performance is achieved between the inner shell and the outer shell, and between the screw joint and the sealing sleeve, effectively preventing leakage of samples during centrifugation and ensuring the accuracy of experimental results.

[0022] The sealing sleeve is provided with a notch and a transparent sheet for easy storage and display of identification labels, allowing users to easily identify sample information in the centrifuge tube, thereby improving the convenience and efficiency of experimental operations.

[0023] The positioning sleeve design on the sealing sleeve allows the centrifuge tube to stand steadily on the table after leaving the centrifuge, avoiding sample contamination or damage caused by tipping, and further improving the safety of the centrifuge tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the present invention;

[0025] Figure 2 A top view of the structure of the present invention;

[0026] Figure 3 for Figure 2 Structural cross-section view at AA in the middle;

[0027] Figure 4 for Figure 3 A schematic diagram of the structure at center A;

[0028] Figure 5 for Figure 3 A magnified schematic diagram of the structure at point B in the middle;

[0029] Figure 6 This is a schematic diagram of the connection structure between the sealing sleeve and the positioning sleeve of the present invention;

[0030] Figure 7 This is a schematic structural diagram of the sealing sleeve of the present invention;

[0031] Figure 8 This is a schematic diagram of the sealing gasket structure of the present invention;

[0032] Figure 9 It is a schematic diagram of the inner shell structure of the present invention.

[0033] In the figure: outer shell 1, screw pipe connector 2, inner shell 3, card slot 1 4, support rod 5, rubber card slot 6, lap ring 7, gasket 8, card slot 2 9, rubber collar 10, pick-up groove 11, sealing gasket 12, sealing sleeve 13, finger groove 14, positioning sleeve 15, rubber ring 16, missing groove 17, transparent sheet 18, rubber protrusion 19. DETAILED DESCRIPTION

[0034] In order to clearly and completely describe the objectives and technical solutions of the present invention and make the advantages more clearly understood, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention, not to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] For example 1, please refer to Figure 1-Figure 3 The present invention provides a technical solution: a high-strength double-layer explosion-proof centrifuge tube, comprising an outer shell 1, an inner shell 3 is provided inside the outer shell 1, and a screw pipe head 2 is integrally formed on the top of the outer shell 1, a sealing sleeve 13 is threaded on the top of the screw pipe head 2, and a positioning sleeve 15 is fixed to the bottom surface of the top plate of the sealing sleeve 13.

[0036] Example 2, refer to the attached Figures 4 and 5 As shown, on the basis of embodiment 1, in order to realize the detachable installation of the inner shell 3 in the outer shell 1, a support rod 5 is fixed to the top surface of the bottom plate of the outer shell 1, and the top end of the support rod 5 is inserted into the card slot 4. The card slot 4 is a spherical slot. The card slot 4 is opened on the bottom surface of the inner shell 3. The top end of the support rod 5 is sleeved and fixed with a rubber clamp 6. The rubber clamp 6 is spherical. The diameter of the rubber clamp 6 is larger than the diameter of the slot 4. The inner ring of the screw pipe connector 2 is fixed There is a gasket 8, and a lap ring 7 is fixed on the tube body of the inner shell 3. The lap ring 7 is an inverted "convex" shaped circular ring plate. The bottom end of the lap ring 7 is inserted in the card groove 2 9, and the card groove 2 9 is an annular groove. The bottom end of the lap ring 7 is fixed with a rubber ring 10, and the rubber ring 10 is a ring plate structure with a circular cross section. The rubber ring 10 is inserted in the card groove 2 9; the top of the screw pipe head 2 is provided with a pick-up groove 11, which is an annular groove.

[0037] The reason why the inner shell 3 is installed in the outer shell 1 in a detachable form is to facilitate the user to select and install the inner shell 3 according to needs, and after the inner shell 3 is removed from the outer shell 1, the inner shell 3 and the outer shell 1 can be used separately; when it is necessary to install the inner shell 3 in the outer shell 1, the inner shell 3 is inserted into the outer shell 1, and the inner shell 3 is pushed down. The rubber clamp head 6 is squeezed into the clamping groove 1 4, and the rubber ring 10 is squeezed into the clamping groove 2 9. In this way, the inner shell 3 is limited, and the inner shell 3 will not be bumped in the outer shell 1. When it is necessary to remove the inner shell 3 from the outer shell 1, the fingers are pinched in the picking groove 11, and the inner shell 3 is pulled upward to pull the inner shell 3 out of the outer shell 1.

[0038] Example 3, refer to the attached Figure 8 As shown, on the basis of Example 2, in order to improve the sealing performance after the sealing sleeve 13 is connected to the screw pipe head 2, a sealing gasket 12 is fixed to the top of the outer shell 1, and the sealing gasket 12 is a "T"-shaped circular ring plate, and the bottom end of the sealing gasket 12 is inserted into the pipe mouth of the inner shell 3; the bottom surface of the sealing gasket 12 is integrally formed with a sealing piece, which is an annular plate structure, and is inserted between the screw pipe head 2 and the inner shell 3; the sealing sleeve 13 is a "T"-shaped cylinder, and a finger groove 14 is provided on the top plate of the sealing sleeve 13, and the finger groove 14 is a circular arc groove. There are two finger grooves 14, and the two finger grooves 14 are symmetrically distributed about the sealing sleeve 13. Pinch the two finger grooves 14 with two fingers respectively, put the sealing sleeve 13 on the top of the screw pipe head 2, and then screw the sealing sleeve 13 to lock it on the screw pipe head 2. After the sealing sleeve 13 is locked, the sealing gasket 12 is clamped between the sealing sleeve 13 and the screw pipe head 2, which not only plays a sealing role, but also serves as an elastic gasket for the screw connection and locking of the sealing sleeve 13 and the screw pipe head 2 to prevent the sealing sleeve 13 and the screw pipe head 2 from loosening.

[0039] Example 4, refer to the attached Figure 7 As shown, on the basis of Example 3, in order to store identification labels in the sealing sleeve 13, a notch 17 is provided on the top surface of the sealing sleeve 13. The notch 17 is a square groove. A transparent sheet 18 is fixed between two parallel side walls of the notch 17. The top surface of the transparent sheet 18 is coplanar with the top surface of the sealing sleeve 13, and notes are stored between the transparent sheet 18 and the notch 17; a plurality of rubber protrusions 19 are fixed on the bottom surface of the notch 17 and the bottom surface of the transparent sheet 18.

[0040] Insert the label containing the material information inside the inner shell 3 into the notch between the notch 17 and the transparent sheet 18. The rubber protrusion 19 increases the friction between the label and the notch to prevent the label from falling off from the notch.

[0041] Embodiment 5, based on embodiment 4, in order to enable the sealing sleeve 13 to assist the outer shell 1 in supporting, the positioning sleeve 15 is a truncated cone-shaped tube, and a rubber ring 16 is fixed to the inner ring opening of the positioning sleeve 15 .

[0042] The reason for installing a positioning sleeve 15 on the top plate of the sealing sleeve 13 is that after the sealing sleeve 13 is unscrewed and removed from the top of the screw joint 2, the sealing sleeve 13 is turned upside down on the table. At this time, the positioning sleeve 15 is facing upward, and the bottom end of the outer shell 1 is inserted into the positioning sleeve 15, so that the outer shell 1 can stand stably on the table.

[0043] Example 6, based on Example 5, proposes a method for using a high-strength double-layer explosion-proof centrifuge tube, comprising the following steps:

[0044] Step 1: Install the inner shell 3 in the outer shell 1 in a detachable form. In order to facilitate the user to select and install the inner shell 3 according to needs, and after the inner shell 3 is removed from the outer shell 1, the inner shell 3 and the outer shell 1 can be used separately; when it is necessary to install the inner shell 3 in the outer shell 1, insert the inner shell 3 into the outer shell 1, push the inner shell 3 down, the rubber clamp 6 is squeezed into the clamping groove 1 4, and the rubber ring 10 is squeezed into the clamping groove 2 9, so that the inner shell 3 is limited and the inner shell 3 does not shake in the outer shell 1. When it is necessary to remove the inner shell 3 from the outer shell 1, put your fingers in the clamping groove 11, pull the inner shell 3 upward, and pull the inner shell 3 out of the outer shell 1;

[0045] Step 2: Pinch the two finger grooves 14 with two fingers respectively, put the sealing sleeve 13 on the top of the screw pipe connector 2, and then screw the sealing sleeve 13 to tighten it on the screw pipe connector 2. After the sealing sleeve 13 is locked, the sealing gasket 12 is clamped between the sealing sleeve 13 and the screw pipe connector 2, which not only plays a sealing role, but also serves as an elastic gasket for the screw connection and locking of the sealing sleeve 13 and the screw pipe connector 2 to prevent the sealing sleeve 13 and the screw pipe connector 2 from loosening;

[0046] Step 3: Insert the label containing the material information inside the inner shell 3 into the notch between the notch 17 and the transparent sheet 18. The rubber protrusion 19 increases the friction between the label and the notch to prevent the label from falling out of the notch.

[0047] Step 4: A positioning sleeve 15 is installed on the top plate of the sealing sleeve 13 so that after the sealing sleeve 13 is unscrewed and removed from the top of the screw joint 2, the sealing sleeve 13 is turned upside down on the table with the positioning sleeve 15 facing upward. The bottom end of the outer shell 1 is inserted into the positioning sleeve 15 to ensure that the outer shell 1 stands stably on the table.

[0048] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A high-strength double-layer explosion-proof centrifuge tube, comprising an outer shell (1), characterized in that: The outer shell (1) is provided with an inner shell (3) inside, and a screw pipe head (2) is integrally formed on the top of the outer shell (1), a sealing sleeve (13) is screwed on the top of the screw pipe head (2), and a positioning sleeve (15) is fixed to the bottom surface of the top plate of the sealing sleeve (13); the positioning sleeve (15) is a truncated cone-shaped tube, and a rubber ring (16) is fixed to the inner ring of the positioning sleeve (15); the bottom of the outer shell (1) and the positioning sleeve (15) match, and when the sealing sleeve (13) is screwed and removed from the top of the screw pipe head (2), the sealing sleeve (13) is inverted on the table, at this time the positioning sleeve (15) faces upward, and the bottom end of the outer shell (1) is inserted into the positioning sleeve (15), and the outer shell (1) stands steadily on the table.

2. The high-strength double-layer explosion-proof centrifuge tube according to claim 1, characterized in that: A support rod (5) is fixed to the top surface of the bottom plate of the outer shell (1), and the top end of the support rod (5) is inserted into the card slot (4). The card slot (4) is a spherical slot. The card slot (4) is opened on the bottom surface of the inner shell (3). The top end of the support rod (5) is sleeved and fixed with a rubber clamp (6). The rubber clamp (6) is spherical, and the diameter of the rubber clamp (6) is larger than the slot diameter of the card slot (4).

3. The high-strength double-layer explosion-proof centrifuge tube according to claim 1, characterized in that: A gasket (8) is fixed to the inner ring of the screw pipe head (2), and a lap ring (7) is fixedly mounted on the tube body of the inner shell (3). The lap ring (7) is an inverted "convex" shaped circular ring plate. The bottom end of the lap ring (7) is inserted into the second clamping groove (9). The second clamping groove (9) is an annular groove. A rubber sleeve (10) is fixedly mounted on the bottom end of the lap ring (7). The rubber sleeve (10) is a ring plate structure with a circular cross section. The rubber sleeve (10) is inserted into the second clamping groove (9).

4. The high-strength double-layer explosion-proof centrifuge tube according to claim 1, characterized in that: A pick-out groove (11) is provided at the top end of the screw-type pipe joint (2), and the pick-out groove (11) is an annular groove.

5. The high-strength double-layer explosion-proof centrifuge tube according to claim 1, characterized in that: A sealing gasket (12) is fixed to the top of the outer shell (1), and the sealing gasket (12) is a T-shaped circular ring plate. The bottom end of the sealing gasket (12) is inserted into the pipe opening of the inner shell (3).

6. The high-strength double-layer explosion-proof centrifuge tube according to claim 5, characterized in that: The bottom surface of the sealing gasket (12) is integrally formed with a sealing piece, which is in the form of an annular plate and is inserted between the screw pipe head (2) and the inner shell (3).

7. The high-strength double-layer explosion-proof centrifuge tube according to claim 1, characterized in that: The sealing sleeve (13) is in the form of a T-shaped cylinder. A finger groove (14) is provided on the top plate of the sealing sleeve (13). The finger groove (14) is in the form of an arc-shaped groove. There are two finger grooves (14), and the two finger grooves (14) are symmetrically distributed about the sealing sleeve (13).

8. The high-strength double-layer explosion-proof centrifuge tube according to claim 1, characterized in that: The top surface of the sealing sleeve (13) is provided with a notch (17), which is a square groove. A transparent sheet (18) is fixed between two parallel side walls of the notch (17). The top surface of the transparent sheet (18) and the top surface of the sealing sleeve (13) are coplanar, and a note is stored between the transparent sheet (18) and the notch (17).

9. The high-strength double-layer explosion-proof centrifuge tube according to claim 8, characterized in that: A plurality of rubber protrusions (19) are fixed on the bottom surface of the notch (17) and the bottom surface of the transparent sheet (18).

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