Centrifugal tube

Abstract

The utility model provides a centrifuge tube which comprises a tube body and a cover body in threaded connection with an opening in the upper side of the tube body, a plurality of limiting through grooves with upward openings are evenly formed in the opening in the upper side of the tube body, a shielding piece is arranged in the tube body and in lap joint with the limiting through grooves in the tube body, and the lower end of the cover body tightly presses the upper side of the shielding piece. The utility model has the beneficial effects that the shielding sheet is lapped in the tube body, and the shielding sheet is pressed and fixed through the cover body, so that when the cover body is taken down, a sample in the tube body can be prevented from splashing out due to the arrangement of the shielding sheet; and the shielding sheet is arranged, so that when a sample is injected into the tube body, a suction tube and the like can directly penetrate through the shielding sheet and then the sample is released into the tube body, and the sample is effectively prevented from being splashed out due to careless operation.

Description

Technical Field

[0001] The utility model belongs to the field of centrifuge accessories, and particularly relates to a centrifuge tube. Background Art

[0002] A centrifugal separator is used for separating reagents and is a commonly used experimental instrument in the fields of biology, chemistry, etc. A centrifuge tube is used in conjunction with a centrifugal separator. Generally, a centrifuge tube includes a tube body and a cover body. The cover body is softly connected or screwed to the tube body, and the structure is relatively simple, and the sample in the tube body is easy to splash out. To solve this problem, a Chinese patent with the application number 202120822174.1 discloses a centrifuge tube with a valve baffle arranged at the mouth of the tube body. However, this structure is not convenient for taking out the sample in the tube and is prone to waste. Summary of the Utility Model

[0003] In view of this, the utility model aims to overcome the above-mentioned deficiencies in the prior art and proposes a centrifuge tube.

[0004] To achieve the above object, the technical solution of the utility model is realized as follows:

[0005] A centrifuge tube includes a tube body and a cover body screwed to the upper opening of the tube body. A plurality of upwardly opening limiting through grooves are uniformly arranged at the upper opening of the tube body. A shielding sheet is arranged in the tube body, and the shielding sheet is lapped in a plurality of limiting through grooves in the tube body, and the lower end of the cover body presses against the upper side of the shielding sheet.

[0006] Further, the shielding sheet includes a connecting ring. A valve structure is fixedly connected to the inner side wall of the connecting ring. Corresponding to each limiting through groove, a lapping block is horizontally and outwardly fixedly connected to the outer side wall of the connecting ring. The shielding sheet is lapped in the limiting through groove through the lapping block.

[0007] Further, the valve is recessed downward.

[0008] Further, the end of the lapping block extends out of the limiting through groove, and a sealing groove is downwardly arranged at the bottom of the lapping block corresponding to the bottom wall of the limiting through groove. The bottom wall of the limiting through groove is embedded in the sealing groove and abuts against the top of the sealing groove.

[0009] Further, a sealing gasket is adhesively bonded in the sealing groove.

[0010] Further, the outer side wall of the connecting ring is in contact with the inner wall of the tube body. A circular fixing edge is downwardly arranged at the bottom of the circumferential edge of the cover body. A circular abutting edge coaxial with the fixing edge is downwardly arranged inside the fixing edge at the bottom of the cover body. A connecting groove is arranged between the fixing edge and the abutting edge. The upper side edge of the tube body is inserted into the connecting groove. The fixing edge is screwed to the outside of the tube body, and the abutting edge abuts against the upper side of the connecting ring.

[0011] Further, a sealing ring is adhesively bonded to the bottom of the abutting edge.

[0012] Further, an annular auxiliary edge is provided upward on the circumferential edge of the cover body, and the outer side wall of the auxiliary edge is aligned with the outer side wall of the fixing edge, and a plurality of anti-slip protrusions are provided on the outer side walls of the auxiliary edge and the fixing edge together.

[0013] Compared with the prior art, the present utility model has the following advantages:

[0014] In the centrifuge tube of the present utility model, a shielding sheet is lapped in the tube body, and the shielding sheet is fixed by pressing with the cover body. When the cover body is removed, due to the arrangement of the shielding sheet, the sample in the tube body can be prevented from splashing out; and by arranging the shielding sheet, when injecting the sample into the tube body, the straw or the like can directly pass through the shielding sheet and then release the sample into the tube body, effectively avoiding the sample splashing caused by careless operation; at the same time, when it is necessary to completely take out the sample in the tube body, the cover body can be opened and the shielding sheet can be completely removed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings constituting a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0016] Figure 1 is a schematic structural diagram of the centrifuge tube according to the embodiment of the present utility model;

[0017] Figure 2 is a schematic structural diagram of the cover body according to the embodiment of the present utility model;

[0018] Figure 3 is a schematic structural diagram of the shielding sheet according to the embodiment of the present utility model;

[0019] Figure 4 is a cross-sectional view of the centrifuge tube according to the embodiment of the present utility model;

[0020] Figure 5 is a schematic structural diagram of the connection structure between the tube body and the shielding sheet according to the embodiment of the present utility model.

[0021] Description of the reference numerals:

[0022] 1, tube body; 11, limiting through groove; 2, cover body; 21, fixing edge; 22, abutting edge; 23, connection groove; 24, auxiliary edge; 25, anti-slip protrusion; 3, shielding sheet; 31, connection ring; 32, valve; 33, lapping block; 34, sealing groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0024] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation on the present utility model. In addition, terms such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0025] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific circumstances.

[0026] The present utility model will be described in detail below with reference to the drawings and in conjunction with embodiments.

[0027] As shown in the figure, a centrifuge tube includes a tube body 1 and a cover body 2 screwed to the upper opening of the tube body 1. A plurality of limiting through slots 11 with upward openings are evenly formed at the upper opening of the tube body 1. A shielding sheet 3 is provided inside the tube body 1, and the shielding sheet 3 is lapped in a plurality of limiting through slots 11 inside the tube body 1. The lower end of the cover body 2 presses against the upper side of the shielding sheet 3. In this embodiment, the shielding sheet 3 is lapped inside the tube body 1, and the shielding sheet 3 is fixed by pressing through the cover body 2. When the cover body 2 is removed, due to the setting of the shielding sheet 3, it can prevent the sample inside the tube body 1 from splashing out; and with the shielding sheet 3 provided, when injecting the sample into the tube body 1, the straw or the like can directly pass through the shielding sheet 3 and then release the sample into the tube body 1, effectively avoiding the sample splashing caused by careless operation.

[0028] The shielding sheet 3 includes a connecting ring 31. A valve 32 structure is fixedly connected to the inner side wall of the connecting ring 31. Corresponding to each limiting through slot 11, a lapping block 33 is horizontally and outwardly fixedly connected to the outer side wall of the connecting ring 31. The shielding sheet 3 is lapped in the limiting through slot 11 through the lapping block 33. In this embodiment, the number of the limiting through slots 11 is two, and they are symmetrically arranged on the tube body 1. Only two lapping blocks 33 are provided on the shielding sheet 3.

[0029] The valve 32 is recessed downward. In this embodiment, the valve 32 is composed of three movable semilunar valves butt-jointed end to end.

[0030] The end of the overlapping block 33 extends out of the limit through groove 11, and a sealing groove 34 is provided downward corresponding to the bottom wall of the limit through groove 11 at the bottom of the overlapping block 33. The bottom wall of the limit through groove 11 is embedded in the sealing groove 34 and abuts against the top of the sealing groove 34.

[0031] A sealing gasket (not shown in the figure) is bonded in the sealing groove 34 to further enhance the sealing performance between the bottom of the overlapping block 33 and the pipe body 1.

[0032] The outer side wall of the connecting ring 31 is in contact with the inner wall of the pipe body 1. The circumferential edge bottom of the cover body 2 is provided with a circular fixing edge 21 downward. At the bottom of the cover body 2 and inside the fixing edge 21, a circular abutting edge 22 coaxial with the fixing edge 21 is provided downward. And a connecting groove 23 is provided between the fixing edge 21 and the abutting edge 22. The upper side edge of the pipe body 1 is inserted into the connecting groove 23, the fixing edge 21 is screwed on the outside of the pipe body 1, and the abutting edge 22 abuts against the upper side of the connecting ring 31.

[0033] A sealing ring (not shown in the figure) is bonded to the bottom of the abutting edge 22 to enhance the sealing performance between the abutting edge 22 and the connecting ring 31.

[0034] The circumferential edge of the cover body 2 is provided with a circular auxiliary edge 24 upward, and the outer side wall of the auxiliary edge 24 is aligned with the outer side wall of the fixing edge 21. And a plurality of anti-slip protrusions 25 are provided on the outer side walls of the auxiliary edge 24 and the fixing edge 21 together, which is convenient for screwing the cover body 2, and the setting of the auxiliary edge 24 increases the force application surface of the finger when screwing, making it more convenient to screw the cover body 2.

[0035] In this embodiment, the cover body 2 and the fixing edge 21, the abutting edge 22 and the auxiliary edge 24 thereon are of an integrally formed structure.

[0036] In this embodiment, the pipe body 1 is made of polypropylene material.

[0037] The working process of this embodiment is as follows:

[0038] When starting or injecting a sample into the pipe body 1 midway, remove the cover body 2. The operator presses the overlapping block 33 with a finger to prevent the shielding piece 3 from detaching from the pipe body 1. Pass the pipette with the sample through the valve 32 structure of the shielding piece 3, inject the sample into the pipe body 1, and finally screw the cover body 2 tightly onto the pipe body 1.

[0039] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A centrifuge tube, characterized in that: It includes a tube body and a cover body screwed on the upper opening of the tube body, a plurality of limit slots opening upward are evenly opened on the upper opening of the tube body, a shielding piece is provided in the tube body, and the shielding piece is overlapped in the plurality of limit slots in the tube body, and the lower end of the cover body presses the upper side of the shielding piece.

2. A centrifuge tube according to claim 1, characterized in that: The shielding piece includes a connecting ring, a valve structure is fixed on the inner side wall of the connecting ring, and a lap block is fixed horizontally outwardly corresponding to each limiting groove on the outer side wall of the connecting ring, and the shielding piece is overlapped in the limiting groove through the lap block.

3. A centrifuge tube according to claim 2, characterized in that: The valve is concave downward.

4. A centrifuge tube according to claim 2, characterized in that: The end of the lap block extends out of the limiting groove, and a sealing groove is downwardly arranged at the bottom of the lap block corresponding to the bottom wall of the limiting groove, and the bottom wall of the limiting groove is embedded in the sealing groove and pressed against the top of the sealing groove.

5. A centrifuge tube according to claim 4, characterized in that: A sealing gasket is bonded in the sealing groove.

6. A centrifuge tube according to claim 2, characterized in that: The outer wall of the connecting ring is in contact with the inner wall of the tube body, and an annular fixed edge is provided downwardly at the bottom of the circumferential edge of the cover body, and an annular abutting edge coaxially arranged with the fixed edge is provided downwardly at the bottom of the cover body, located inside and outside the fixed edge, and a connecting groove is provided between the fixed edge and the abutting edge, the upper edge of the tube body is inserted into the connecting groove, the fixed edge is screwed on the outside of the tube body, and the abutting edge is tightly pressed against the upper side of the connecting ring.

7. A centrifuge tube according to claim 6, characterized in that: A sealing ring is bonded along the bottom of the abutment.

8. A centrifuge tube according to claim 6, characterized in that: An annular auxiliary edge is upwardly arranged on the peripheral edge of the cover body, and the outer side wall of the auxiliary edge is aligned with the outer side wall of the fixed edge, and a plurality of anti-slip protrusions are arranged on the outer side walls of the auxiliary edge and the fixed edge.

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