Sealing gasket, sealing cover and centrifugal tube

Abstract

The utility model provides a sealing gasket, a sealing cover and a centrifugal tube, and belongs to the technical field of experimental equipment, the sealing gasket comprises wall bodies, the wall bodies are connected end to end to form a circumferential closed structure, and the top of the circumferential closed structure is open; the bottom of the circumferential sealing structure is sealed, and an opening seam capable of being opened and closed is formed in the bottom; bosses used for tightly closing the slot are arranged on the two sides of the slot and connected with the outer wall of the wall body. According to the sealing gasket, the liquid adding pipe is inserted into the slot when the sealing gasket is used, and the slot is closed when the sealing gasket is not used, so that extracted liquid can be added without opening a cover of the centrifugal tube after the oscillation or dispersion process of the centrifugal tube is completed, the experiment steps are reduced, and the sealing gasket is convenient to use.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of experimental apparatus, specifically relates to a sealing gasket, sealing cover and centrifugal tube. BACKGROUND

[0002] Laboratory carries out molecular biology and serology detection to blood or tissue sample etc., needs to carry out centrifugal processing to the sample to be detected first. In biological science, especially in biochemistry and molecular biology research field, has obtained very extensive application, and each biochemistry and molecular biology laboratory has to prepare multiple forms of centrifuge.

[0003] Centrifugal technology is mainly used in the separation and preparation of various biological samples. Specifically, the biological sample suspension is placed in a centrifugal tube rotating at high speed, and due to the action of a huge centrifugal force, the suspended small particles (such as organelles, biological macromolecular precipitates, etc.) are settled at a certain speed, so as to be separated from the solution. Centrifugation of the sample has become an indispensable part of molecular biology and serodiagnosis, and the use of the centrifugal tube has become one of the commonly used consumables in the experimental process. The existing centrifugal tube needs to open the centrifugal tube cover after the oscillation or dispersion process is completed, add the extraction liquid, and then cover the centrifugal tube cover and transfer to the centrifuge for centrifugal operation. The steps are relatively cumbersome. In order to improve the work efficiency, there are also machines in the prior art that can automatically operate this step, but the process of opening the cover and screwing on the cover has a high failure rate, which causes the sample to splash or the machine to stop, and the use effect is not good. UTILITY MODEL CONTENTS

[0004] In order to solve the problems existing in the prior art, a sealing gasket, a sealing cover and a centrifugal tube are proposed.

[0005] The technical solution for solving the technical problems of the utility model is:

[0006] Firstly, a sealing gasket is proposed, which comprises a wall body with elasticity, the wall body is connected at the head and tail to form a circumferential closed structure, the top of the circumferential closed structure is open, the bottom is closed, and a slotted opening capable of being opened and closed is formed in the bottom, at least one group of convex bosses for tightly closing the slotted opening is arranged on both sides of the slotted opening, and the convex bosses are connected with the outer wall of the wall body.

[0007] Preferably, a recessed accommodating cavity is formed in the wall body, the slotted opening is communicated with the accommodating cavity; the opening at the top of the wall body is circular, the wall body is inwardly tapered from the top to the bottom to form a structure with a large end at the top and a small end at the bottom; and a slope is formed on the wall body.

[0008] Preferably, the top of the wall body is connected to a fixed layer extending outward to wrap the wall body.

[0009] Preferably, the inner side of the boss is connected to the outer wall of the wall body, and the outer edge of the boss is spaced apart from the outer edge of the fixed layer.

[0010] Preferably, the boss is triangular in structure, the inclined edge of the boss is fixedly connected to the inclined surface of the wall body, and the bottom surface of the boss is flush with the bottom of the wall body.

[0011] Secondly, a sealing cover with a sealing gasket is also proposed, the sealing gasket is adaptively arranged in the sealing cover; a through hole is formed in the top of the sealing cover, the through hole is in communication with the accommodating cavity; an inserting space is formed between the outer edge of the boss and the inner wall of the sealing cover.

[0012] Preferably, the sealing cover comprises a cover plate portion and a connecting portion extending downward from the outer wall of the cover plate portion; a through hole is formed in the middle of the cover plate portion, and the fixed layer of the sealing gasket is connected to the bottom of the cover plate portion.

[0013] Preferably, the outer wall of the fixed layer of the sealing gasket is tightly pressed against the inner wall of the connecting portion.

[0014] Finally, a centrifugal tube with a sealing cover is proposed, the top of the centrifugal tube is provided with the sealing cover, the top of the centrifugal tube can be inserted into the inserting space, and the outer side wall of the boss can be tightly pressed against the inner wall of the centrifugal tube after the centrifugal tube is connected to the sealing cover.

[0015] Preferably, the top of the centrifugal tube is tightly pressed against the bottom of the fixed layer of the sealing gasket.

[0016] Compared with the prior art, the technical scheme has the following advantages or beneficial effects:

[0017] 1. The sealing gasket of the utility model, when using, inserts the liquid adding pipe into the slit, and when not using, closes the slit, so that after the centrifugal tube is completed in the process of oscillation or dispersion, the liquid adding pipe can be added without opening the centrifugal tube cover, the experimental steps are reduced, and the utility model is convenient to use.

[0018] 2. The utility model increases the boss which tightly closes the slit and the inserting space formed between the boss and the sealing cover on both sides of the slit, can not only guide and position the centrifugal tube, but also facilitate the cooperation of the centrifugal tube and the sealing cover; moreover, the boss is elastic, the liquid adding pipe can squeeze the slit when being inserted, and the boss is tightly pressed against the inner wall of the centrifugal tube when the slit is closed, so that the slit is tightly closed and does not leak liquid. BRIEF DESCRIPTION OF DRAWINGS

[0019] The drawings constituting a part of the utility model are used to provide further understanding of the utility model, and the schematic embodiment of the utility model and the description thereof are used to explain the utility model, and do not constitute improper limitation on the utility model.

[0020] Figure 1 is the bottom view of the sealing gasket.

[0021] Figure 2 is a top view of the sealing gasket.

[0022] Figure 3 is a schematic view of the sealing cover without the sealing gasket.

[0023] Figure 4 is a schematic view of the sealing cover with the sealing gasket.

[0024] Figure 5 is a schematic view of a centrifuge tube using the sealing cover.

[0025] Figure 6 is an exploded view of a centrifuge tube using the sealing cover.

[0026] Figure 7 is a schematic view of the sealing gasket in an open state.

[0027] Figure 8 is a schematic view of the sealing gasket in Example 2.

[0028] Figure 9 is a schematic view of the sealing gasket in Example 3.

[0029] BRIEF DESCRIPTION OF DRAWINGS

[0030] 1, sealing cover; 11, connecting portion; 12, cover plate portion; 13, through hole; 2, sealing gasket; 21, fixed layer; 22, boss; 23, accommodating cavity; 24, slit; 25, wall body; 3, centrifuge tube; 4, liquid addition tube. DETAILED DESCRIPTION

[0031] For the purpose of clarity, the technical features of the present application will be described in detail below with specific embodiments and in conjunction with the accompanying drawings. The following disclosure provides many different embodiments or examples for implementing the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. In addition, the present application can repeatedly refer to numbers and / or letters in different examples. Such repetition is for the purpose of simplification and clarity, and in itself does not indicate the relationship between the various embodiments and / or settings discussed. It should be noted that the components illustrated in the drawings are not necessarily drawn to scale. The present application omits the description of known components and processing techniques and processes to avoid unnecessary limitations on the present application. The terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be a fixed connection, or it can be 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, or the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] Embodiment one:

[0033] Please refer to Figure 1 、 Figure 2 and Figure 7The sealing gasket 2 is made of elastic material such as rubber, and comprises a wall body 25 connected at both ends to form a circumferential closed structure. The top of the circumferential closed structure is open, and a recessed accommodating cavity 23 is formed inside. The bottom of the circumferential closed structure is closed, and a slit 24 capable of being opened and closed is arranged on the bottom. The slit 24 is in communication with the accommodating cavity 23. The slit 24 can be opened when extruded by an external object, and automatically closed due to the elasticity of the material when not extruded, thereby cutting off the liquid on both sides of the wall body 25. A boss 22 for tightly closing the slit 24 is arranged on both sides of the slit 24. The boss 22 is connected to the outer wall of the wall body 25. When the boss 22 is in contact with the inner wall by installing the sealing gasket 2 on the bottle opening of a device, the relative extrusion force on both sides of the slit 24 can be further improved by the boss 22 when the slit 24 is closed, thereby further improving the sealing degree. When the slit 24 needs to be opened, the slit 24 can be pried open by inserting a device such as a 4 into the slit 24, so as to realize the communication between the upper and lower sides of the sealing gasket 2. In the embodiment, the top of the wall body 25 is circular, and the bottom of the wall body 25 is inwardly contracted to form the slit 24. The slit 24 is linear when closed, that is, the structure of the wall body 25 is circular at the top and linear at the bottom, and the structure formed between the circle and the line is shaped.

[0034] The inner side of the boss 22 is connected to the outer wall of the wall body 25, and there is a gap between the outer edge of the boss 22 and the fixed layer 21. In addition, the wall body 25, the boss 22 and the fixed layer 21 are integrally formed.

[0035] Embodiment Two:

[0036] Please refer to Figure 8 In the embodiment, a sealing gasket is provided, which comprises an elastic wall body 25 connected at both ends to form a circumferential closed structure. The circumferential closed structure is cylindrical, and a slit 24 capable of being opened and closed is arranged on the bottom. The slit 24 can be opened when extruded by an external object, and automatically closed due to the elasticity of the material when not extruded, thereby cutting off the liquid on both sides of the wall body 25. A group of bosses 22 for tightly closing the slit 24 are arranged on both sides of the slit 24. The bosses 22 are connected to the outer wall of the bottom of the wall body 25. The bosses 22 are triangular in shape, and there is a gap between the outer side of the boss 22 and the outer edge of the wall body 25.

[0037] Embodiment Three:

[0038] Please refer to Figure 9 In the embodiment, other parts are the same as in the embodiment, except that the bosses 22 are provided in two groups. Each group comprises two bosses 22 symmetrically arranged on both sides of the slit. The two groups of bosses 22 are arranged in parallel. The use of two groups of bosses 22 can make the slit 24 bear greater force, and the effect of tightly pressing is better.

[0039] Embodiment Four:

[0040] Please refer to Figures 3-4 , in order to facilitate the use of the sealing gasket 2, the present embodiment proposes a sealing cover 1 applied with the sealing gasket 2; the sealing cover 1 comprises a cover plate part 12 and a connecting part 11 extending downward from the outer wall of the cover plate part 12, a through hole 13 is formed in the middle of the cover plate part 12, and the through hole 13 is in communication with the accommodating cavity 23; the bottom of the cover plate part 12 is connected with the sealing gasket 2, and the fixing layer 21 of the sealing gasket 2 is tightly attached to the bottom of the cover plate part 12.

[0041] In order to more conveniently connect the sealing gasket 2 with the sealing cover 1, the fixing layer 21 of the sealing gasket 2 is connected to the top of the wall body 25 and wraps the wall body 25. The outer wall of the fixing layer 21 of the sealing gasket 2 is tightly attached to the inner wall of the connecting part 11. Compared with the sealing gasket 2 and the sealing cover 1 without fastening treatment, the sealing gasket 2 is clamped on the inner side of the sealing cover 1 through the fixing layer 21. When the sealing cover 1 is disassembled, the sealing gasket 2 can continue to be fixed on the sealing cover 1, which is convenient for the user to install and disassemble.

[0042] Embodiment five:

[0043] Please refer to Figures 5-6 , the present embodiment proposes a centrifugal tube 3 applied with the sealing cover 1, which can be connected with the internal thread of the sealing cover 1. After the centrifugal tube 3 is screwed with the sealing cover 1, the outer wall of the boss 22 can be tightly attached to the inner wall of the centrifugal tube 3, so that when the slit 24 is closed, the boss 22 is further tightly attached by being attached to the inner wall of the centrifugal tube 3, and when the liquid adding pipe 4 is inserted into the slit 24, the slit 24 can be opened by the elasticity of the boss 22. The connection between the centrifugal tube and the sealing cover includes but is not limited to threaded connection, that is, the outer wall of the top of the centrifugal tube 3 is provided with external threads, and the inner wall of the connecting part 11 is provided with internal threads.

[0044] The thickness of the centrifugal tube 3 is the same as the distance from the outer side of the fixing layer 21 of the sealing gasket 2 to the outer edge of the boss 22, so that when the sealing cover 1 is screwed with the centrifugal tube 3, the boss 22 can be in contact with the inner wall of the centrifugal tube 3.

[0045] In use, only the sealing gasket 2 is placed in the sealing cover 1, and then the sealing cover 1 is screwed to the open end of the centrifugal tube 3. After centrifugation, 4 is sequentially inserted through the through hole 13 and the accommodating cavity 23, and then inserted into the centrifugal tube 3 through the slit 24 for liquid adding operation. After liquid adding is completed, 4 is pulled out, and the slit 24 is re-closed to form a sealed space under the action of the elasticity of the boss 22, so that the centrifugal liquid in the centrifugal tube 3 cannot splash out.

[0046] The utility model has been described in combination with the drawings above, but is not limited to the protection scope of the utility model, and various modifications or changes made by those skilled in the art on the basis of the technical scheme of the utility model without creative labor are still within the protection scope of the utility model.

Claims

1. A gasket, characterized by: The sealing gasket comprises a wall body (25) with elasticity, the wall body (25) is connected at both ends to form a circumferential closed structure, the top of the circumferential closed structure is open, the bottom is closed, and a slit (24) capable of being opened and closed is arranged at the bottom, at least one group of bosses (22) for tightly closing the slit (24) are arranged on both sides of the slit (24), and the bosses (22) are connected to the outer wall of the wall body (25).

2. A gasket according to claim 1, wherein: The wall body (25) is internally formed with a recessed accommodating cavity (23), the slit (24) is communicated with the accommodating cavity (23), the top of the wall body (25) is circular, the wall body (25) is internally tapered from the top to the bottom to form a structure with a large end on the top and a small end on the bottom, and a slope is formed on the wall body (25).

3. A gasket according to claim 2, wherein: The top of the wall body (25) is connected to a fixed layer (21) extending outward to wrap the wall body (25).

4. The gasket of claim 3 wherein: The inner side of the boss (22) is connected to the outer wall of the wall body (25), and there is a spacing between the outer edge of the boss (22) and the outer edge of the fixed layer (21).

5. The gasket of claim 2 wherein: The boss (22) is in a triangular structure, the slope of the boss (22) is fixedly connected to the slope of the wall body (25), and the bottom surface of the boss (22) is arranged flush with the bottom of the wall body (25).

6. A closure, characterised in that: The sealing gasket (2) is arranged in the sealing cover (1), the top of the sealing cover (1) is provided with a through hole (13), the through hole (13) is communicated with the accommodating cavity (23), and the outer edge of the boss (22) and the inner wall of the sealing cover (1) form a space for insertion.

7. A closure as claimed in claim 6, wherein The sealing cover comprises a cover plate portion (12) and a connecting portion (11) extending downward from the outer wall of the cover plate portion (12), the through hole (13) is arranged in the middle of the cover plate portion (12), and the fixed layer (21) of the sealing gasket (2) is connected to the bottom of the cover plate portion (12).

8. A closure as claimed in claim 6, wherein: The outer wall of the fixed layer (21) of the sealing gasket (2) is tightly arranged on the inner wall of the connecting portion (11).

9. A centrifuge tube characterized by: The top of the centrifugal tube (3) is provided with the sealing cover according to any one of claims 6-8, the top of the centrifugal tube (3) can be inserted into the space for insertion, and the outer side wall of the boss (22) can be tightly arranged on the inner wall of the centrifugal tube (3) after the centrifugal tube (3) is connected to the sealing cover (1).

10. A centrifuge tube according to claim 9, wherein: The top of the centrifugal tube (3) is tightly arranged on the bottom of the fixed layer (21) of the sealing gasket (2) to form a seal.

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