CN112237950A

CN112237950A - Test tube cover

Info

Publication number: CN112237950A
Application number: CN201910656508.XA
Authority: CN
Inventors: 何艳玲; 王杰伟; 吴艳辉; 孙万东; 李瑾
Original assignee: Beijing Luqiao Technology Co ltd
Current assignee: Beijing Luqiao Technology Co ltd
Priority date: 2019-07-19
Filing date: 2019-07-19
Publication date: 2021-01-19

Abstract

The invention provides a test tube cover. This test tube lid includes: the first cover body is provided with a ventilation channel, the second cover body is provided with a first position for opening the ventilation channel completely, the second cover body is provided with a second position for opening the ventilation channel partially, the second cover body is provided with a third position for closing the ventilation channel, and the second cover body is operated to be selectively positioned at one of the first position, the second position and the third position. Can set up the second lid in the second position with the cultivation to aerobic microorganism, strengthen the permeability of test tube under the prerequisite that does not cause the pollution, and still can set up the second lid in first position and third position according to the use needs of test tube.

Description

Test tube cover

Technical Field

The invention relates to the technical field of experimental equipment, in particular to a test tube cover.

Background

The test tube is the most common test carrier in the food detection field, and the design form of the test tube has important influence on test results, particularly test results related to microorganism culture. The microorganisms related to the field of food detection are mostly aerobic microorganisms, a culture system needs to contain a certain amount of oxygen in the culture process, but the structural design of a test tube cover body on the market at present is too simple, and only has two states of closing and completely opening, the inside of a test tube is isolated from the external environment in the closing state, the test tube can be in a relative oxygen state after the oxygen in the test tube is exhausted along with the prolonging of the culture time, and certain influence is certainly caused on the growth and the physicochemical property of the microorganisms, so that the condition of missed detection and wrong judgment is caused; the culture system is inevitably polluted by the external environment in the completely opened state, so that the detection result is invalid. The problem generally exists in the field of whole food detection, an ideal solution is not provided, and a novel test tube which has two functions of oxygen permeation and pollution isolation in the microbial culture process is urgently needed in the industry.

Disclosure of Invention

The invention mainly aims to provide a test tube cover to solve the problem that aerobic microorganisms cultured through a test tube are difficult in the prior art.

In order to achieve the above object, according to one aspect of the present invention, there is provided a test tube cap including: the first cover body is used for being connected with the test tube, and is provided with a ventilation channel which is communicated with the accommodating cavity of the test tube; the second cover body is movably connected with the first cover body and is provided with a first position for opening the ventilation channel completely, the second cover body is provided with a second position for partially opening the ventilation channel, the second cover body is provided with a third position for closing the ventilation channel, and the second cover body is operated to be selectively positioned at one of the first position, the second position and the third position.

Furthermore, a ventilation channel is formed in the middle of the first cover body, a first limiting part is arranged on the inner wall of the ventilation channel, a second limiting part and a third limiting part are arranged on the second cover body at intervals, and when the first cover body is separated from the second cover body, the second cover body is located at the first position; when the second limiting part is matched and connected with the first limiting part, the second cover body is positioned at a second position; when the third limiting part is matched and connected with the first limiting part, the second cover body is located at a third position.

Furthermore, a first annular boss is arranged on the inner wall of the ventilation channel of the first cover body, and the first annular boss forms a first limiting part.

Further, the second cover body includes: the second cover body is movably connected with the first cover body; the second limiting part is matched and connected with the first limiting part so as to shield part of the ventilation channel by the plug positioned in the ventilation channel; when the second cover body is located at the third position, the third limiting part is connected with the first limiting part in a matched mode, and the third limiting part is located in the ventilation channel through the plug so as to completely block the ventilation channel.

Further, the plug includes: the plug body is connected with the second cover body, a second annular boss, a third annular boss and a fourth annular boss are arranged on the outer peripheral surface of the plug body at intervals, a first accommodating groove formed by enclosing the second annular boss, the third annular boss and the outer peripheral surface of the plug body is a second limiting part, when the second limiting part is connected with the first limiting part in a matched mode, at least part of the first annular boss is located in the first accommodating groove, and a gap is formed between the groove wall of the first accommodating groove and the first annular boss; the outer peripheral face of third annular boss, fourth annular boss, end cap body encloses the second holding tank of establishing formation and is the spacing portion of third, and when the spacing portion of second was connected with the cooperation of first spacing portion, whole first annular boss was located the second holding tank to fourth annular boss and first annular boss or with ventilation channel's inner wall sealing connection.

Furthermore, the fourth annular boss is detachably connected with the plug body, and the fourth annular boss is a sealing ring.

Furthermore, the second cover body is a shell, the shell is provided with a cavity, the plug is connected with the bottom wall of the cavity, an annular avoiding space is formed between the plug and the inner wall of the cavity, a fifth annular boss is arranged at the end part of the first cover body, when the second cover body is positioned at the second position, part of the fifth annular boss is positioned in the annular avoiding space, a gap is formed between the end face of the opening end of the second cover body and the end face of the first cover body, when the second cover body is positioned at the third position, all the fifth annular bosses are positioned in the annular avoiding space, and the end face of the opening end of the second cover body is connected with the end face of the first cover body in a sealing mode.

Furthermore, a protrusion is arranged on the outer peripheral surface of the fifth annular boss, the outer diameter of the fifth annular boss is D, the diameter of the profile of the cross section of the inner wall of the cavity is D, D is smaller than D, the distance from one side of the protrusion, which is far away from the fifth annular boss, to the circle center of the fifth annular boss is s, and the radius R of the profile of the cross section of the inner wall of the cavity is larger than R.

Further, the one end that first lid is close to the test tube is provided with the ring channel, and the test tube mouth of test tube and the cell wall looks joint of ring channel.

Furthermore, a connecting belt is arranged between the first cover body and the second cover body, and the connecting belt is a flexible body.

By applying the technical scheme of the invention, the first cover body is provided with the ventilation channel, the second cover body is provided with the first position for completely opening the ventilation channel, the second cover body is provided with the second position for partially opening the ventilation channel, the second cover body is provided with the third position for closing the ventilation channel, and the second cover body is operated to be selectively positioned at one of the first position, the second position and the third position. Can set up the second lid in the second position with the cultivation to aerobic microorganism, strengthen the permeability of test tube under the prerequisite that does not cause the pollution, and still can set up the second lid in first position and third position according to the use needs of test tube.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 shows a schematic structural view of a first embodiment of a cuvette lid according to the invention;

fig. 2 shows a schematic structural view of a second embodiment of the cuvette lid according to the invention.

Wherein the figures include the following reference numerals:

10. a first cover body; 11. a ventilation channel; 12. a first annular boss; 13. a fifth annular boss; 14. a protrusion; 15. an annular groove;

20. a second cover body; 21. a second cover body; 22. a plug; 221. a plug body; 222. a second annular boss; 223. a third annular boss; 224. a fourth annular boss;

30. and a connecting belt.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, in the drawings, it is possible to enlarge the thicknesses of layers and regions for clarity, and the same devices are denoted by the same reference numerals, and thus the description thereof will be omitted.

Referring to fig. 1 to 2, according to an embodiment of the present invention, there is provided a test tube cap.

Specifically, as shown in fig. 1, the test tube cap includes: the test tube cap comprises a first cap body 10 and a second cap body 20, wherein the first cap body 10 is used for being connected with a test tube, the first cap body 10 is provided with a ventilation channel 11, the ventilation channel 11 is communicated with an accommodating cavity of the test tube, the second cap body 20 is movably connected with the first cap body 10, the second cap body 20 is provided with a first position for completely opening the ventilation channel 11, the second cap body 20 is provided with a second position for partially opening the ventilation channel 11, the second cap body 20 is provided with a third position for closing the ventilation channel 11, and the second cap body 20 is operated so that the second cap body 20 can be selectively located at one of the first position, the second position and the third position.

In this embodiment, the first cover body is provided with a ventilation channel, the second cover body is provided with a first position at which the ventilation channel is completely opened, the second cover body is provided with a second position at which the ventilation channel is partially opened, the second cover body is provided with a third position at which the ventilation channel is closed, and the second cover body is operated to be selectively located at one of the first position, the second position and the third position. Can set up the second lid in the second position with the cultivation to aerobic microorganism, strengthen the permeability of test tube under the prerequisite that does not cause the pollution, and still can set up the second lid in first position and third position according to the use needs of test tube.

In this embodiment, the middle portion of the first cover 10 is provided with a ventilation channel 11, the inner wall of the ventilation channel 11 is provided with a first limiting portion, the second cover 20 is provided with a second limiting portion and a third limiting portion, the second limiting portion and the third limiting portion are arranged at intervals, and when the first cover 10 is separated from the second cover 20, the second cover 20 is located at a first position; when the second position-limiting part is connected with the first position-limiting part in a matching manner, the second cover body 20 is located at a second position; when the third position-limiting portion is connected to the first position-limiting portion, the second cover 20 is located at the third position. According to the user's needs, through with the spacing portion of second on the second lid 20 or the spacing portion cooperation of third with first spacing portion respectively to reach half-open or close ventilation channel 11, with the realization under the condition of half-open, strengthen the permeability of test tube under the prerequisite that does not cause the pollution, with the cultivation that is suitable for aerobic microorganism. Specifically, a first annular boss 12 is disposed on an inner wall of the ventilation channel 11 of the first cover 10, and the first annular boss 12 forms a first limiting portion.

Further, the second cover 20 includes: the second cover body 21 is movably connected with the first cover body 10, the plug 22 is connected with the second cover body 21, a second limiting portion and a third limiting portion are arranged on the plug 22 at intervals, when the second cover body 20 is located at a first position, the plug 22 is far away from the ventilation channel 11 to open the ventilation channel 11, and when the second cover body 20 is located at a second position, the second limiting portion is connected with the first limiting portion in a matched mode to shield part of the ventilation channel 11 when the plug 22 is located in the ventilation channel 11; when the second cover 20 is located at the third position, the third position-limiting portion is connected to the first position-limiting portion in a matching manner, so that the plug 22 is located in the ventilation channel 11 to completely block the ventilation channel 11. Can make end cap 22 go deep into in the ventilation channel 11 through setting up end cap 22 to the spacing portion of second and the spacing portion of third through end cap 22 are connected with the first spacing portion that sets up on ventilation channel 11's the inner wall selectively, so that ventilation channel 11 when adjusting as required with external permeability, guaranteed the isolation with the external world in the test tube.

As shown in fig. 1, the plug 22 includes: the plug body 221, the plug body 221 is connected with the second cover body 21, the second annular boss 222, the third annular boss 223 and the fourth annular boss 224 are arranged on the outer peripheral surface of the plug body 221 at intervals, the first accommodating groove formed by surrounding the outer peripheral surfaces of the second annular boss 222, the third annular boss 223 and the plug body 221 is a second limiting part, when the second limiting part is connected with the first limiting part in a matching manner, at least part of the first annular boss 12 is positioned in the first accommodating groove, and a gap is formed between the groove wall of the first accommodating groove and the first annular boss 12; set up like this and make end cap body 221 be connected under the fixed circumstances by the spacing portion of second and the cooperation of first spacing portion in the position, and partial air accessible clearance gets into the test tube and keeps the environment of aerobic, and has guaranteed to a certain extent in the test tube with external isolation, has prevented to be contaminated in the test tube. The second accommodating groove formed by surrounding the outer peripheral surfaces of the third annular boss 223, the fourth annular boss 224 and the plug body 221 is a third limiting part, when the second limiting part is matched and connected with the first limiting part, all the first annular bosses 12 are located in the second accommodating groove, the fourth annular boss 224 is hermetically connected with the inner walls of the first annular boss 12 or the ventilation channel 11, and of course, the fourth annular boss 224 can also be hermetically connected with the inner walls of the first annular boss 12 and the ventilation channel 11. The arrangement is such that the plug body 221 can completely block the air-permeable channel 11, so as to provide a user with a desired use environment, such as a sealed environment.

Preferably, the fourth annular projection 224 is detachably connected to the plug body 221, and the fourth annular projection 224 is a sealing ring. Set up like this and further improved second lid 20 when being located the third position, ventilation channel's sealing performance for test tube inner chamber is isolated with external.

In this embodiment, the second cover body 21 is a casing, the casing has a cavity, the plug 22 is connected to a bottom wall of the cavity, an annular avoiding space is formed between the plug 22 and an inner wall of the cavity, a fifth annular boss 13 is disposed at an end portion of the first cover body 10, when the second cover body 20 is located at the second position, a part of the fifth annular boss 13 is located in the annular avoiding space, a gap is formed between an end surface of an open end of the second cover body 21 and an end surface of the first cover body 10, when the second cover body 20 is located at the third position, all the fifth annular bosses 13 are located in the annular avoiding space, and the end surface of the open end of the second cover body 21 is connected to the end surface of the first cover body 10 in a sealing manner. This arrangement further improves the sealing performance of the ventilation passage when the second cover 20 is located at the third position.

In this embodiment, a protrusion 14 is disposed on the outer peripheral surface of the fifth annular boss 13, the outer diameter of the fifth annular boss 13 is D, the diameter of the profile of the cross section of the inner wall of the cavity is D, D is less than D, the distance from the side of the protrusion 14 away from the fifth annular boss 13 to the center of the fifth annular boss 13 is s, and the radius R of the profile of the cross section of the inner wall of the cavity is greater than R. The arrangement ensures that the fifth annular boss 13 is located in the cavity of the second cover body 21 and extrudes the inner wall of the cavity through the fifth annular boss 13 to form interference fit when the second cover body 20 is located at the third position, so as to improve the connection stability when the second cover body 20 is located at the third position.

As shown in fig. 2, an annular groove 15 is formed at one end of the first cap 10 close to the test tube, and the test tube opening of the test tube is clamped with the wall of the annular groove 15. This arrangement facilitates connection to the test tube port via annular groove 15.

In the present embodiment, a connecting band 30 is provided between the first cover 10 and the second cover 20, and the connecting band 30 is a flexible body. The arrangement enables a user to operate with one hand, so that the second cover body 20 can be selectively located at different positions, and the second cover body 20 is provided with grains for increasing friction and preventing slipping when the upper cover body is pushed.

In addition to the foregoing, it should be noted that reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described generally throughout this application. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the scope of the invention to effect such feature, structure, or characteristic in connection with other embodiments.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A test tube cap, comprising:

the first cover body (10), the first cover body (10) is used for being connected with a test tube, the first cover body (10) is provided with a ventilation channel (11), and the ventilation channel (11) is communicated with an accommodating cavity of the test tube;

a second cover body (20), the second cover body (20) being movably connected with the first cover body (10), the second cover body (20) having a first position in which the ventilation channel (11) is fully opened, the second cover body (20) having a second position in which the ventilation channel (11) is partially opened, the second cover body (20) having a third position in which the ventilation channel (11) is closed, the second cover body (20) being operated so that the second cover body (20) is selectively located at one of the first position, the second position, and the third position.

2. The test tube cover according to claim 1, wherein the middle of the first cover body (10) is provided with the ventilation channel (11), the inner wall of the ventilation channel (11) is provided with a first limiting part, the second cover body (20) is provided with a second limiting part and a third limiting part, the second limiting part and the third limiting part are arranged at intervals, and when the first cover body (10) is separated from the second cover body (20), the second cover body (20) is located at the first position; when the second limiting part is matched and connected with the first limiting part, the second cover body (20) is located at the second position; when the third limiting part is matched and connected with the first limiting part, the second cover body (20) is located at the third position.

3. Test tube cover according to claim 2, characterized in that a first annular boss (12) is provided on the inner wall of the venting channel (11) of the first cover (10), the first annular boss (12) forming the first stop.

4. The cuvette lid according to claim 3, wherein the second lid body (20) comprises:

a second cover body (21), the second cover body (21) being movably connected with the first cover body (10);

the plug (22), the plug (22) is connected with the second cover body (21), the second limiting portion and the third limiting portion are arranged on the plug (22) at intervals, when the second cover body (20) is located at the first position, the plug (22) is far away from the ventilation channel (11) to open the ventilation channel (11), and when the second cover body (20) is located at the second position, the second limiting portion is connected with the first limiting portion in a matched mode, so that part of the ventilation channel (11) is shielded by the plug (22) located in the ventilation channel (11); when the second cover body (20) is located at the third position, the third limiting part is connected with the first limiting part in a matched mode, so that the air vent channel (11) is completely blocked by the plug (22) located in the air vent channel (11).

5. The cuvette lid according to claim 4, wherein the stopper (22) comprises:

the plug body (221), the plug body (221) is connected to the second cover body (21), a second annular boss (222), a third annular boss (223) and a fourth annular boss (224) are arranged on the outer peripheral surface of the plug body (221) at intervals, a first accommodating groove formed by surrounding the outer peripheral surfaces of the second annular boss (222), the third annular boss (223) and the plug body (221) serves as the second limiting portion, when the second limiting portion is connected with the first limiting portion in a matched mode, at least part of the first annular boss (12) is located in the first accommodating groove, and a gap is formed between the groove wall of the first accommodating groove and the first annular boss (12); the third annular boss (223), the fourth annular boss (224), the second holding tank that the outer peripheral face of end cap body (221) encloses and establishes formation does the spacing portion of third, works as the spacing portion of second with when first spacing portion cooperation is connected, whole first annular boss (12) are located in the second holding tank, and fourth annular boss (224) with first annular boss (12) and/or fourth annular boss (224) with the inner wall sealing connection of ventilation channel (11).

6. The cuvette lid according to claim 5, wherein the fourth annular projection (224) is detachably connected to the stopper body (221), and the fourth annular projection (224) is a sealing ring.

7. The cuvette lid according to claim 4, wherein the second lid body (21) is a housing, the shell is provided with a cavity, the plug (22) is connected with the bottom wall of the cavity, an annular avoiding space is formed between the plug (22) and the inner wall of the cavity, a fifth annular boss (13) is arranged at the end part of the first cover body (10), when the second cover body (20) is located at the second position, part of the fifth annular boss (13) is located in the annular avoidance space, a gap is formed between the end surface of the opening end of the second cover body (21) and the end surface of the first cover body (10), when the second cover body (20) is located at the third position, all the fifth annular bosses (13) are located in the annular avoidance space, and the end face of the opening end of the second cover body (21) is connected with the end face of the first cover body (10) in a sealing mode.

8. The test tube cover according to claim 7, wherein a protrusion (14) is provided on the outer circumferential surface of the fifth annular boss (13), the outer diameter of the fifth annular boss (13) is D, the diameter of the cross-sectional profile of the inner wall of the cavity is D, D is less than D, the distance from the side of the protrusion (14) away from the fifth annular boss (13) to the center of the fifth annular boss (13) is s, and the radius of the cross-sectional profile of the inner wall of the cavity is R, and s is greater than R.

9. Test tube cover according to claim 1, characterized in that the end of the first cover (10) close to the test tube is provided with an annular groove (15), and the test tube mouth of the test tube is snapped into the groove wall of the annular groove (15).

10. Test tube cover according to claim 1, characterized in that a connecting band (30) is provided between the first cover (10) and the second cover (20), the connecting band (30) being a flexible body.