High-strength double-layer anti-explosion centrifugal tube

Abstract

The invention relates to the technical field of centrifugal tubes, in particular to a high-strength double-layer anti-explosion centrifugal tube which comprises an outer shell, an inner shell is arranged in the outer shell, a screw joint tube head is integrally formed at the top of the outer shell, the top of the screw joint tube head is sleeved with a sealing sleeve in a screw joint mode, and a positioning sleeve is fixed to the bottom face of a top plate of the sealing sleeve; the high-strength double-layer anti-explosion centrifugal tube has the beneficial effects that the double-layer structure of the outer shell and the inner shell greatly enhances the anti-pressure ability and the anti-explosion performance of the centrifugal tube, the structure can be kept complete even under high-pressure and high-speed centrifugal conditions, and sample leakage and potential safety hazards caused by breakage are effectively prevented.

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] In many fields such as biochemistry, molecular biology, medical diagnosis and materials science, centrifuge tubes are indispensable experimental tools and are widely used in sample separation, purification, extraction and reaction processes. Traditional centrifuge tubes usually adopt a single-layer structure, and are mostly made of plastic materials such as polypropylene (PP) and polycarbonate (PC). However, these single-layer centrifuge tubes often show the following shortcomings when facing complex experimental conditions such as high speed, high pressure and extreme temperature:

[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 usually rely on a simple cap structure for sealing. This sealing method is easy to loosen during high-speed rotation, resulting in sample leakage or gas exchange, affecting the experimental results. Especially in experiments that require strict control of the gas atmosphere or prevention of sample volatilization, the sealing problem is particularly prominent.

[0005] Inconvenient labeling: During the experiment, centrifuge tubes are often loaded with different types of samples. In order to distinguish these samples, labels are usually attached to the centrifuge tubes. However, the label attachment positions of traditional centrifuge tubes are limited, and they are easily removed or blurred due to friction during the centrifugation process, which brings inconvenience to the experimenters.

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

[0007] The purpose 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 purpose, 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 arranged 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 sleeve 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, the first card slot is a spherical slot, and the first card slot 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 diameter of the slot of the first card slot.

[0010] Preferably, a gasket is fixed to the inner ring mouth of the screw pipe joint, and a lap ring is fixedly mounted 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 slot. The second card slot is an annular groove. A rubber ring is fixedly mounted on the bottom end of the lap ring. The rubber ring is a ring plate structure with a circular cross-section, and the rubber ring is inserted into the second card slot.

[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 ring plate, and the bottom end of the sealing gasket is inserted into the pipe opening of the inner shell.

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

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

[0015] Preferably, a notch is provided on the top surface of the sealing sleeve, the notch 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 an outer shell and an inner shell, which greatly enhances the pressure resistance and explosion-proof performance of the centrifuge tube. Even under high-pressure and high-speed centrifugation conditions, the structure can remain intact, effectively preventing sample leakage and safety hazards caused by rupture.

[0020] The inner shell is installed in the outer shell in a detachable form. This design allows users to flexibly choose the material and specifications of the inner shell according to experimental requirements, which improves the versatility and flexibility of the centrifuge tube. At the same time, after the inner shell is removed, the outer shell and the inner shell can be used separately, which increases the flexibility of use.

[0021] Through the coordinated use of sealing gaskets, rubber clamps, rubber rings and other components, high sealing is achieved between the inner shell and the outer shell, and between the screw pipe head and the sealing sleeve, which effectively prevents leakage of samples during centrifugation and ensures the accuracy of the experimental results.

[0022] The sealing sleeve is provided with a notch and a transparent sheet for storing and displaying identification labels, so that users can easily identify the sample information in the centrifuge tube, 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 It is 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 enlargement in the middle;

[0028] Figure 5 for Figure 3 A magnified schematic diagram of the structure at 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 diagram of the sealing sleeve structure of the present invention;

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

[0032] Fig. 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, slot 1 4, support rod 5, rubber clip 6, lap ring 7, gasket 8, slot 2 9, rubber sleeve 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 make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail 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, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] For example, see 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 arranged 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 threadedly connected to 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] Embodiment 2, refer to the attached Figures 4 to 5 As shown, on the basis of the first embodiment, 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, and 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 notch diameter of the card slot 4; the inner ring of the screw pipe connector 2 is fixed There is a gasket 8, 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 in the second card groove 9. The second card 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 in the second card groove 9; a pick-out groove 11 is provided at the top of the screw pipe connector 2, and the pick-out groove 11 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, so that 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] Embodiment 3, refer to the attached Figure 8 As shown, on the basis of Example 2, in order to improve the sealing performance of the sealing sleeve 13 after being connected to the screw pipe fitting 2, a sealing gasket 12 is fixed to the top of the outer shell 1, and the sealing gasket 12 is a "T"-shaped annular plate, and the bottom end of the sealing gasket 12 is inserted into the pipe mouth of the inner shell 3; a sealing sheet is integrally formed on the bottom surface of the sealing gasket 12, and the sealing sheet is an annular plate structure, and the sealing sheet is inserted between the screw pipe fitting 2 and the inner shell 3; the sealing sleeve 13 is a "T"-shaped cylinder, and a finger groove 14 is opened on the top plate of the sealing sleeve 13, and the finger groove 14 is a circular arc groove, and 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 connector 2, and then screw the sealing sleeve 13 to screw and lock 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 screwing and locking the sealing sleeve 13 and the screw pipe connector 2 to prevent the sealing sleeve 13 and the screw pipe connector 2 from loosening.

[0039] Embodiment 4, refer to the attached Figure 7 As shown, on the basis of the third embodiment, in order to store the identification label in the sealing sleeve 13, a notch 17 is opened on the top surface of the sealing sleeve 13, and 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] The label containing the material information inside the inner shell 3 is inserted 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.

[0041] Embodiment 5, on the basis of embodiment 4, in order to realize that the sealing sleeve 13 assists 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 removed from the top of the screw pipe connector 2 by screwing, the sealing sleeve 13 is inverted on the table with the positioning sleeve 15 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] Embodiment 6, based on embodiment 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 the 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 6 is squeezed into the clamping groove 1 4, and the rubber sleeve 10 is squeezed into the clamping groove 2 9, so that 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 finger is pinched in the extraction groove 11, and the inner shell 3 is pulled upward to 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 screw and lock 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 screwing and locking 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, and 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 removed from the top of the screw pipe connector 2 by screwing, the sealing sleeve 13 is inverted 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] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present 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: An inner shell (3) is provided inside the outer shell (1), and a screw pipe joint (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 joint (2), and a positioning sleeve (15) is fixed to the bottom surface of the top plate of the sealing sleeve (13).

2. The high-strength double-layer explosion-proof centrifuge tube according to claim 1, characterized in that: A support rod (5) is fixed on the top surface of the bottom plate of the outer shell (1), and the top end of the support rod (5) is inserted into a card slot (4). The card slot (4) is a spherical slot and is arranged on the bottom surface of the inner shell (3). A rubber clamp (6) is sleeved and fixed on the top end of the support rod (5). The rubber clamp (6) is spherical and has a diameter larger than the notch 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 opening of the screw pipe joint (2); a lap ring (7) is sleeved and 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 into the second clamping groove (9); the second clamping groove (9) is an annular groove; a rubber sleeve ring (10) is sleeved and fixed to the bottom end of the lap ring (7); the rubber sleeve ring (10) is a ring plate structure with a circular cross section; the rubber sleeve ring (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: The top end of the screw pipe connector (2) is provided with a pick-out groove (11), which 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 end of the outer shell (1), 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 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 sheet, which is in the form of an annular plate structure 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 groove. There are two finger grooves (14) which 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) is coplanar with the top surface of the sealing sleeve (13), 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).

10. The high-strength double-layer explosion-proof centrifuge tube according to claim 1, characterized in that: 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).

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