A centrifuge tube having a double-layer cover

Abstract

The utility model discloses a centrifugal tube with double -deck lid. Including outer tube and being located outer tube top's double -deck lid, double -deck lid includes: the flap in the upper portion of outer tube, the ladder ring with axial step -like outer wall, the large diameter section of ladder ring is set in the top opening portion of outer tube, and the upper end of large diameter section is connected with the flap, and the small diameter section is inserted into the outer tube, the cross valve of adopting flexible material is made, including the spherical cap shape main part of concave and annular installation groove, the cross cut of the spherical cap shape main part is set up and is passed through, and the outer edge is equipped with annular installation groove, and annular installation groove and the lower end of small diameter section of ladder ring are embedded and cooperate, so that cross valve sets up in the lower end opening portion of small diameter section. The centrifugal tube provided by the utility model can effectively prevent the liquid leakage in the centrifugal tube.

Description

Technical Field

[0001] This utility model relates to the field of laboratory consumables, and in particular to a centrifuge tube with a double-layered cap. Background Technology

[0002] Existing centrifuge tubes consist of a tube body and a cap. The appropriate reagent or sample is placed in the tube body, the cap is closed, and centrifugation is performed to separate liquids or solids into layers. The centrifuge tube is then removed for further processing. However, because these centrifuge tubes are directly connected to the outside, operator error can cause the sample or reagent inside to be accidentally dropped, resulting in spillage. If the sample or reagent inside the centrifuge tube is valuable or toxic, this can lead to experimental failure or threaten the health of the experimenter. Utility Model Content

[0003] To address the problems existing in the background art, this utility model provides a centrifuge tube with a double-layered cap. This centrifuge tube can effectively prevent liquid leakage inside the centrifuge tube.

[0004] The technical solution adopted in this utility model is: The double-layer cover includes: A flip cover located above the outer tube; A stepped ring with an axial stepped outer wall has a large-diameter section fitted onto the top opening of the outer tube and connected to the flap at the top, while the small-diameter section extends into the outer tube. The cross valve, made of flexible material, includes a concave spherical crown-shaped body and an annular mounting groove. A cross-shaped slit is opened through the spherical crown-shaped body, and an annular mounting groove is provided on the outer edge. The annular mounting groove is fitted into the lower end of the small diameter section of the stepped ring, so that the cross valve is sleeved at the lower opening of the small diameter section.

[0005] The semi-apex angle of the spherical crown is 8~12°, that is, on the axial cross-section of the main body of the spherical crown, the angle between the tangent at the edge point of the crown and the tangent at the center point is 8~12°.

[0006] The ratio of the length of the cross-shaped slit to the radial diameter of the cross-shaped valve body is in the range of 0.85 to 0.75.

[0007] The diameters of the stepped ring small diameter section and the cross valve are both smaller than the inner diameter of the outer pipe.

[0008] The flexible material is rubber or silicone.

[0009] The double-layer cover also includes a connecting piece; one end of the connecting piece is integrally connected to the flip cover, and the other end is integrally connected to one side of the upper end of the large-diameter section of the stepped ring.

[0010] The flip cover, stepped ring, connecting piece, and outer tube are all made of plastic.

[0011] The inner outer edge of the flip cover is provided with an interlocking structure with the upper outer edge of the large diameter section of the stepped ring.

[0012] The large-diameter section of the stepped ring and the outer tube are connected by threads to achieve a detachable sealed connection.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This invention incorporates a cross valve that prevents liquid from automatically flowing out, ensuring that reagents or samples will not spill from the centrifuge tubes due to operational errors during experiments. This safeguards the smooth progress of the experiment and the health of the experimenters. Normal experimental equipment allows for the aspiration of reagents or samples via the cross valve, and experimenters can also directly separate the outer tube and double cap to manipulate reagents or samples. Attached Figure Description

[0014] Figure 1 This is the overall right view of the present invention; Figure 2 This is an overall front view of the present invention; Figure 3 This is a right view of the double-layer cover of this utility model; Figure 4 This is a perspective view of the cross valve of this utility model.

[0015] In the diagram: 1. Double cover, 11. Flip cover, 12. Cross valve, 121. Annular mounting groove, 122. Cross notch, 13. Stepped ring, 131. Large diameter section, 132. Small diameter section, 2. Outer pipe. Detailed Implementation

[0016] 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.

[0017] Reference Figures 1-4 This utility model provides a centrifuge tube with a double-layer cover, including an outer tube 2 and a double-layer cover 1 disposed on the top of the outer tube 2.

[0018] like Figure 2 As shown, the double-layer cover 1 includes: Flip cover 11 is located above outer tube 2; The stepped ring 13 has an axial stepped outer wall. The large-diameter section 131 is fitted at the top opening of the outer tube 2. The upper end of the large-diameter section 131 is connected to the flap 11, and the small-diameter section 132 extends downward into the outer tube 2. The cross valve 12 is made of flexible material, such as... Figure 3 As shown, it includes a concave spherical crown-shaped body and an annular mounting groove 121. A cross-shaped slit 122 is provided through the spherical crown-shaped body. An annular mounting groove 121 is provided on the outer edge of the spherical crown-shaped body. The annular mounting groove 121 is fitted and sealed with the lower end of the small diameter section 132 of the stepped ring 13, so that the cross valve 12 is sleeved at the lower opening of the small diameter section 132.

[0019] Specifically, on the axial section of the spherical crown body, the angle between the tangent at the edge of the crown and the tangent at the center point (apex) is 8~12°, preferably 10°.

[0020] Preferably, such as Figure 4 As shown, the ratio of the length of the cross-shaped slit 122 to the radial diameter of the spherical body of the cross valve 12 is in the range of 0.85 to 0.75.

[0021] Specifically, the diameters of the small-diameter section 132 of the stepped ring 13 and the cross valve 12 are both smaller than the inner diameter of the outer pipe 2.

[0022] Preferably, the flexible material is rubber or silicone.

[0023] Furthermore, the double cover 1 also includes a connecting piece; one end of the connecting piece is integrally connected to the flip cover 11, and the other end is integrally connected to the upper side of the large diameter section 131 of the stepped ring 13.

[0024] Preferably, the flip cover 11, the stepped ring 13, the connecting piece and the outer tube 2 are all made of plastic.

[0025] Furthermore, an interlocking structure is provided between the inner outer edge of the flip cover 11 and the upper outer edge of the large diameter section 131 of the stepped ring 13.

[0026] During use, the flip cover 11 can be lifted outward or snapped inward via the connecting piece. When the flip cover 11 is snapped inward, the interlocking structure located on the inner side of the flip cover 11 and the large diameter section 131 of the stepped ring 13 locks together, so that the flip cover 11 and the double cover 1 are sealed together.

[0027] Preferably, the double-layer cover 1 and the outer tube 2 are designed separately. The large-diameter section 131 of the stepped ring 13 in the double-layer cover 1 is threaded into the outer tube 2, thereby making the double-layer cover 1 and the outer tube 2 detachably connected.

[0028] The working principle of the centrifuge tube provided by this utility model is as follows: When using this type of centrifuge tube, first assemble the double-layered cap 1 and the outer tube 2, then open the flip cap 11. When adding or aspirating samples or reagents into or from the outer tube 2, experimental equipment such as a pipette can be used. Insert the pipette into the cross-shaped notch 122 of the cross valve 12 into the outer tube 2 to perform the addition or aspiration operation. Because the cross valve 12 is made of silicone, it will deform in the direction of the applied force when subjected to external force, creating an opening for experimental equipment to enter. When the experimental equipment is removed from the cross valve 12, the cross valve 12 will automatically deform back to its original shape, and the opening will close.

[0029] If the centrifuge tube falls due to the operator's carelessness or operational error, the cross valve 12, which is bent and protruded 10° downwards into the outer tube 2, is not easily opened by liquid and can effectively prevent the sample or reagent in the outer tube 2 from flowing out or being poured out of the cross valve 12, provided that the double cover 1 is fixedly connected to the outer tube 2.

[0030] In addition, when it is necessary to add solid samples or solid reagents to the centrifuge tube, the double cap 1 can be separated from the outer tube 2, the solid sample or solid reagent can be added to the outer tube 2, and then the double cap 1 can be put back on, and then the aforementioned operation can be performed.

[0031] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A centrifuge tube with a double-layered cap, comprising an outer tube (2) and a double-layered cap (1) at the top, characterized in that: The double-layer cover (1) includes: The flip cover (11) is located above the outer tube (2); A stepped ring (13) with an axial stepped outer wall has a large diameter section (131) fitted at the top opening of the outer tube (2) and connected to the flip cover (11) at the top end, and a small diameter section (132) extending into the outer tube (2). The cross valve (12) made of flexible material includes a concave spherical crown-shaped body and an annular mounting groove (121). A cross-shaped slit (122) is opened through the spherical crown-shaped body, and an annular mounting groove (121) is provided on the outer edge. The annular mounting groove (121) is fitted into the lower end of the small diameter section (132) of the stepped ring (13), so that the cross valve (12) is sleeved at the lower opening of the small diameter section (132).

2. The centrifuge tube with a double-layered cap according to claim 1, characterized in that: The semi-apex angle of the spherical crown is 8~12°.

3. The centrifuge tube with a double-layered cap according to claim 1, characterized in that: The ratio of the length of the cross-shaped slit (122) to the radial diameter of the spherical body of the cross valve (12) is in the range of 0.85 to 0.

75.

4. The centrifuge tube with a double-layered cap according to claim 1, characterized in that: The diameters of the small diameter section (132) of the stepped ring (13) and the cross valve (12) are both smaller than the inner diameter of the outer tube (2).

5. The centrifuge tube with a double-layered cap according to claim 1, characterized in that: The flexible material is rubber or silicone.

6. The centrifuge tube with a double-layered cap according to claim 1, characterized in that: The double-layer cover (1) also includes a connecting piece; one end of the connecting piece is integrally connected to the flip cover (11), and the other end is integrally connected to the upper side of the large diameter section (131) of the stepped ring (13).

7. The centrifuge tube with a double-layered cap according to claim 6, characterized in that: The flip cover (11), stepped ring (13), connecting piece and outer tube (2) are all made of plastic.

8. The centrifuge tube with a double-layered cap according to claim 1, characterized in that: An interlocking structure is provided between the inner outer edge of the flip cover (11) and the upper outer edge of the large diameter section (131) of the stepped ring (13).

9. The centrifuge tube with a double-layered cap according to claim 1, characterized in that: The large-diameter section (131) of the stepped ring (13) and the outer tube (2) are connected by a threaded fit to achieve a detachable sealed connection.

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