CN212532992U - Combined sealing test tube cover and sealing test tube - Google Patents
Combined sealing test tube cover and sealing test tube Download PDFInfo
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- CN212532992U CN212532992U CN202021694790.5U CN202021694790U CN212532992U CN 212532992 U CN212532992 U CN 212532992U CN 202021694790 U CN202021694790 U CN 202021694790U CN 212532992 U CN212532992 U CN 212532992U
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- upper cover
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- test tube
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Abstract
The utility model provides a combination seal test tube lid, including upper cover, lower cover and sealing member, the upper cover can the lock in the lower cover top, the lower cover be provided with the external screw thread matched with internal thread of test tube body opening part, through screw thread fixed mounting on the body, still include the sealing member, lower cover, upper cover and the coaxial setting of sealing member, sealing member fixed mounting are inboard at the lower cover, the inboard interference fit of lower extreme and the body of sealing member, the protruding interference fit of the annular at upper end and the upper cover middle part of sealing member. In the use of the combined sealing test tube cover and the sealing test tube, the single-hand operation and the easy application of force are realized, and the sealing element is arranged, so that the lower cover and the tube body, the upper cover and the lower cover are fully sealed, the possibility of air leakage and leakage is avoided, and the accuracy and precision of the experiment can be fully ensured.
Description
Technical Field
The utility model relates to a detection device especially relates to a sealed test tube lid of combination and sealed test tube.
Background
In the cultivation process of microorganism, need use the test tube, in order to the requirement to aseptic technique, need add the test tube lid to the test tube and keep apart external environment, also need add the test tube lid to holding the test tube that waits to detect the sample in medical science, food, medicine microorganism inspection usually, avoid transporting the circumstances such as the in-process sample is spilt or takes place cross contamination between the sample. However, in the aspect of sealing performance of the existing test tube, the test tube cover cannot achieve sufficient sealing conditions, liquid leakage is easy to occur, and the test result is influenced.
In addition, some of them are gas-generating, such as detection of coliform group bacteria, and in order to observe the gas generation during these culturing processes, containers such as test tubes with gas collecting devices are required. And the test tube cover with insufficient sealing performance is difficult to isolate the external air, so that the test result is influenced.
The existing test tube cover can be generally divided into an upper cover and a lower cover, wherein the upper cover is provided with an annular bulge, and two sealing treatment modes are usually adopted, namely firstly, the annular bulge of the upper cover directly blocks a test tube opening, but air leakage and liquid leakage are easy to occur; secondly, the lower cover blocks the mouth of the test tube, and the annular bulge of the upper cover directly blocks the lower cover, but the leakage is easy to occur.
Therefore, it is necessary to provide a test tube having good sealing properties, which solves the problem of sealing in the test tube during the culture of microorganisms.
SUMMERY OF THE UTILITY MODEL
The utility model provides a sealed test tube lid of combination and sealed test tube has solved the cultivation in-process of microorganism, the bad good problem of test tube leakproofness, its technical scheme as follows:
the utility model provides a combination seal test tube lid, includes upper cover, lower cover and sealing member, the upper cover can the lock in the lower cover top, the lower cover be provided with the external screw thread matched with internal thread of test tube body opening part, through screw thread fixed mounting on the body, still include the sealing member, lower cover, upper cover and the coaxial setting of sealing member, sealing member fixed mounting are inboard at the lower cover, the inboard interference fit of lower extreme and the body of sealing member, the protruding interference fit of annular at the upper end of sealing member and upper cover middle part.
The upper cover comprises an integrally formed upper cover body and an annular bulge at the middle part, the lower end of the upper cover body is an upper cover buckling part and is matched with a lower cover buckling part of the lower cover, the annular bulge protrudes outwards from the middle part of the upper cover buckling part, and the length of the annular bulge is greater than that of the upper cover body.
The upper cover body is conical, a concave part is arranged on the outer side of the upper cover body, and the concave part does not influence the cylindrical shape of the annular bulge.
The lower cover and the upper cover are fixedly connected through the connecting portion, the connecting portion is made of elastic or weak elastic materials, elastic or weak elastic connection of the lower cover and the upper cover is achieved, the upper cover can be pushed away from a buckling position of the upper cover and the lower cover along a rotating shaft, and the rotating shaft passes through the connecting portion and is perpendicular to the central axis of the lower cover.
The sealing element comprises an outer side injection molding body and an inner side injection molding body, and the inner side injection molding body is fixed at the upper end of the inner side of the outer side injection molding body; the outer side injection molding body comprises an upper plastic ring and a lower plastic ring, the diameter of the lower plastic ring is smaller than that of the upper plastic ring, an outer clamping part protrudes out of the joint of the upper plastic ring and the lower plastic ring, and an inner clamping part protrudes out of the inner side of the joint of the upper plastic ring and the lower plastic ring; a lower clamping groove is formed between the outer clamping part and the outer side of the lower plastic ring, an upper clamping groove is formed between the inner clamping part and the inner side of the upper plastic ring, and the lower end of the inner side injection molding body extends into the upper clamping groove; the lower plastic ring is also provided with a bulge which protrudes outwards, the outer diameter of the bulge is not more than that of the upper plastic ring, and the inner diameter of the inner side injection molding body is not more than that of the annular bulge.
An annular groove is formed in the inner side of the lower cover above the inner thread, the outer clamping portion extends into the annular groove of the lower cover, and the outer side of the upper plastic ring is tightly attached to the inner side of the buckling portion of the lower cover, so that a sealing element is fixedly mounted; and a lower cover buckling part is arranged above the annular groove.
The utility model provides a combined sealing test tube, utilizes the aforesaid test tube lid, still include the body, the body is cylindricly, the upper end of body is provided with the external screw thread, cooperatees with the internal thread that the lower cover inboard set up, the lower extreme of body is provided with semi-circular socle, and the bottom edge that the lower extreme of semi-circular socle is higher than the body.
The top of the upper cover is provided with an opening or a groove for installing the top cover with the logo.
The gas collecting support is installed in the pipe body and comprises a cylindrical support ring, a conical gas collecting chamber is arranged on one side of the support ring, the edge of the gas collecting chamber forms a concave part of the gas collecting chamber with an arc-shaped concave part towards the inside of the support ring, and a lower opening of the gas collecting support is formed between the lower part of the gas collecting chamber and the pipe body.
The sealing member is through the realization of double-colored double shot moulding, and wherein, the hardness of outside injection molding is greater than the inboard injection molding, the outside injection molding adopts the TPE material, the inboard injection molding adopts PE or TPU or tetrafluoro or silica gel material.
The combined sealing test tube cover and the sealing test tube realize one-hand operation and easy and convenient force application in the using process, the lower cover and the tube body, the upper cover and the lower cover are fully sealed through the arrangement of the sealing parts, the possibility of air leakage and liquid leakage is avoided, and the accuracy and precision of an experiment can be fully ensured; meanwhile, the shape of the gas collection support can meet the requirement of gas collection, the gas production condition in the gas collection chamber can be directly observed through the wall of the test tube, and the observation effect cannot be influenced even if the turbidity of a sample in the test tube is large.
Drawings
FIG. 1 is a schematic view of the structure of the sealed test tube;
FIG. 2 is a schematic view of the open configuration of the sealed cuvette;
FIG. 3 is an exploded view of the sealed tube;
FIG. 4 is a schematic view of the seal construction;
FIG. 5 is a schematic view of an exploded structure of the seal;
FIG. 6 is a schematic view of the open state of the composite sealing cuvette lid;
FIG. 7 is a schematic view of the closed state of the unitized sealed cuvette lid;
FIG. 8 is a schematic structural view of the gas collecting support;
the reference numbers in the figures:
1-a pipe body; 2-test tube cover; 3-a seal; 4-gas collection support; 11-external thread; 12-semicircular tube bottom; 20-a top cover; 21-lower cover; 22-upper cover; 23-a recess; 24-an annular projection; 25-upper cover fastening part; 26-internal threads; 27-lower cover fastening part; 28-annular groove; 29-a connecting portion; 30-upper card slot; 31-an outer injection molded body; 32-inner side injection molding; 33-upper plastic ring; 34-an external card portion; 35-a boss; 36-lower plastic ring; 37-an inner clip portion; 38-inside of the inner injection molded body; 39-inside the outside of the injection molded body; 40-lower card slot; 41-a scaffold ring; 42-plenum edge; 43-plenum chamber depression; 44-lower opening of gas collecting support; 45-air collection chamber.
Detailed Description
As shown in fig. 1 and 2, the sealed test tube comprises a tube body 1 and a test tube cover 2, wherein the test tube cover 2 is installed at the opening of the tube body 1 to seal the tube body 1.
As shown in fig. 3, the tube body 1 is cylindrical, the upper end of the tube body 1 is provided with an external thread 11, the lower end of the tube body is provided with a semicircular tube bottom 12, and the lowest part of the semicircular tube bottom 12 is higher than the bottom edge of the tube body 1.
The test tube cover 2 comprises a lower cover 21, an upper cover 22 and a sealing element 3, wherein the upper cover 22 can be buckled above the lower cover 21, and the sealing element 3 is fixedly arranged on the inner side of the lower cover 21 and is matched with the upper cover 22 to realize sealing. The lower cover 21, the upper cover 22 and the sealing element 3 are coaxially arranged, and the lower cover 21, the upper cover 22 and the sealing element 3 form a whole cover and are connected with the pipe body 1 through threads.
The inner side of the lower cover 21 is provided with an internal thread 26, and the internal thread 26 is matched with the external thread 11 of the pipe body 1. Above the internal thread 26, an annular groove 28 is provided for the fixed mounting of the seal 3. A lower cover fastening part 27 is provided on the top of the lower cover 21 to be engaged with the upper cover 21.
The upper cover 22 comprises an integrally formed upper cover body and an annular bulge 24 in the middle, the lower end of the upper cover body is an upper cover buckling part 25, and the upper cover 22 is buckled to the lower cover 21 through the matching of the upper cover buckling part 25 and the lower cover buckling part 27. The annular protrusion 24 protrudes outward from the middle of the upper cap locking portion 25, and has a length greater than that of the upper cap body.
The upper cover body is conical, and a concave part 23 is arranged on the outer side of the upper cover body and is used for pushing the upper cover 22 open when the lower cover 21 and the upper cover 22 are in a buckling state. And the recess 23 does not affect the cylindrical shape of the annular protrusion 24.
The top of upper cover body is provided with the trompil for installation top cap 20, top cap 20 through back-off and upper cover body assembly combination, can print the logo on the top cap.
The lower cover 21 and the upper cover 22 are fixedly connected through a connecting part 29, the connecting part 29 is arranged on the outer side edges of the lower cover 21 and the upper cover 22 and is far away from the recessed part 23, the connecting part 29 is made of elastic materials, the elastic connection of the lower cover 21 and the upper cover 22 is realized, when the upper cover 22 and the lower cover 21 are in a buckling position or are opened by no more than 90 degrees, the connecting part 29 is in an elastic stretching state, and when the upper cover 22 and the lower cover 21 are opened by more than 90 degrees, the connecting part 29 is in a loose state; the depressed part 23 is pushed by a front force, the upper cover 22 can be pushed away from the buckling position of the lower cover 21 along a rotating shaft which passes through the connecting part 29 and is vertical to the central axis of the lower cover 21, and the pushed-away upper cover 22 automatically pops open by more than 40 degrees under the action of the resilience force of the connecting part 29.
As shown in fig. 4 and 5, the sealing member 3 is a two-color two-shot injection molding product, and includes an outer injection molding 31 and an inner injection molding 32, the inner injection molding 32 is fixed on the upper end of the inner side of the outer injection molding 31, and the inner injection molding 38 and the inner injection molding 39 are respectively disposed on the inner side and the outer side.
The outside injection molding body 31 comprises an upper plastic ring 33 and a lower plastic ring 36, the diameter of the lower plastic ring 36 is smaller than that of the upper plastic ring 33, the lower plastic ring 36 is positioned below the upper plastic ring 33, the outer side of the joint of the upper plastic ring and the lower plastic ring is protruded with an outer clamping part 34 due to different diameters, and the inner side of the joint of the upper plastic ring and the lower plastic ring is protruded with an inner clamping part 37.
A lower clamping groove 40 is formed between the outer clamping part 34 and the outer side of the lower plastic ring 36, and an upper clamping groove 30 is formed between the inner clamping part 37 and the inner side of the upper plastic ring 33.
The lower plastic ring 36 is also provided with a convex part 35 which protrudes outwards, and the outer diameter of the convex part 35 does not exceed the outer diameter of the upper plastic ring 33.
The lower end of the inner injection molded body 32 extends into the upper clamping groove 30.
The outside injection molding 31 and the inboard injection molding 32 of sealing member 3 are made by different materials respectively, and the hardness of outside injection molding 31 is greater than inboard injection molding 32, the outside injection molding 31 can adopt the TPE material, inboard injection molding 32 can adopt PE or TPU or tetrafluoro or silica gel material, and both combine closely, realize through the secondary injection molding. The inner injection-molded body outer side 39 now fits tightly against the inner side of the upper plastic ring 33.
As shown in fig. 6, when the sealing member 3 is fixedly installed inside the lower cap 21, the outer locking portion 34 extends into the annular groove 28 of the lower cap 21, and the outer side of the upper plastic ring 33 is closely attached to the inner side of the lower cap engaging portion 27.
When installing lower cover 21 on body 11, realize through the cooperation of internal thread 26 and external screw thread 11, when the rotation is to the end, the top edge of body 11 stretches into lower draw-in groove 40 department, and the inboard of body 11 is pushed down to the bellying 35 of sealing member 3, makes sealing member 3 and body 11 form interference fit, reaches sealed effect.
As shown in fig. 7, when the upper cover 22 is fastened above the lower cover 21, the upper cover fastening portion 25 is fastened outside the lower cover fastening portion 27, and the annular protrusion 24 extends into the inner injection molded body 32 and is in interference fit with the inner side 38 of the inner injection molded body, thereby achieving a sealing effect.
Thus, for the edge sealing effect, (1) the inner side of the tube body 11 is in interference fit with the boss 35 of the sealing member 3, and sealing is achieved; (2) the upper edge of the pipe body 11 extends into the lower clamping groove 40 to realize sealing; (3) the lower cover 21 is matched with the thread of the tube body 11 to realize sealing. Further, for the middle sealing effect, (1) the annular protrusion 24 is in interference fit with the inner injection molded body 32 to realize sealing; (2) the gap between the annular bulge 24 and the upper cover buckling part 25 is tightly attached to the upper part of the inner side injection molding body 32 to realize sealing; (3) the upper cover fastening part 25 and the lower cover fastening part 27 are fastened to realize sealing.
It can be seen that the utility model provides a sealing member 3's structure, the sealed effect of improvement that can be very big prevents the weeping gas leakage.
As shown in fig. 8, for the requirement of gas collection, a gas collecting support can be fixedly placed at the lower end of the tube 11, the gas collecting support is installed inside the tube, and a gas cavity is formed inside the tube through the gas collecting support to serve as a gas collecting chamber 45 for collecting gas.
The gas collecting support comprises a cylindrical support ring 41, one side of the support ring 41 is inwards sunken to form a gas collecting chamber 45, the sunken distance is larger downwards, the sunken shape of the gas collecting chamber 45 is of a symmetrical structure, and further arc-shaped sunken parts are arranged on the edges 42 of the gas collecting chambers at two sides to form gas collecting chamber sunken parts 43. The upper part of the gas collection chamber 45 does not exceed the upper surface of the support ring 41, and a gas collection support lower opening 44 is formed between the lower part of the gas collection chamber 45 and the pipe body 11.
The combined sealing test tube cover and the sealing test tube realize one-hand operation and easy and convenient force application in the using process, the lower cover and the tube body, the upper cover and the lower cover are fully sealed through the arrangement of the sealing parts, the possibility of air leakage and liquid leakage is avoided, and the accuracy and precision of an experiment can be fully ensured; meanwhile, the shape of the gas collection support can meet the requirement of gas collection, the gas production condition in the gas collection chamber can be directly observed through the wall of the test tube, and the observation effect cannot be influenced even if the turbidity of a sample in the test tube is large.
Claims (10)
1. The utility model provides a combination seal test tube lid, includes upper cover, lower cover and sealing member, the upper cover can the lock in the lower cover top, the lower cover be provided with the external screw thread matched with internal thread of test tube body opening part, through screw thread fixed mounting on the body, its characterized in that: still include the sealing member, lower cover, upper cover and the coaxial setting of sealing member, sealing member fixed mounting are inboard at the lower cover, the lower extreme and the inboard interference fit of body of sealing member, the annular protruding interference fit in upper end and the upper cover middle part of sealing member.
2. The combination sealing cuvette lid according to claim 1, wherein: the upper cover comprises an integrally formed upper cover body and an annular bulge at the middle part, the lower end of the upper cover body is an upper cover buckling part and is matched with a lower cover buckling part of the lower cover, the annular bulge protrudes outwards from the middle part of the upper cover buckling part, and the length of the annular bulge is greater than that of the upper cover body.
3. The combination sealing cuvette lid according to claim 1, wherein: the upper cover body is conical, a concave part is arranged on the outer side of the upper cover body, and the concave part does not influence the cylindrical shape of the annular bulge.
4. The combination sealing cuvette lid according to claim 1, wherein: the lower cover and the upper cover are fixedly connected through the connecting portion, the connecting portion is made of elastic or weak elastic materials, elastic or weak elastic connection of the lower cover and the upper cover is achieved, the upper cover can be pushed away from a buckling position of the upper cover and the lower cover along a rotating shaft, and the rotating shaft passes through the connecting portion and is perpendicular to the central axis of the lower cover.
5. The combination sealing cuvette lid according to claim 1, wherein: the sealing element comprises an outer side injection molding body and an inner side injection molding body, and the inner side injection molding body is fixed at the upper end of the inner side of the outer side injection molding body; the outer side injection molding body comprises an upper plastic ring and a lower plastic ring, the diameter of the lower plastic ring is smaller than that of the upper plastic ring, an outer clamping part protrudes out of the joint of the upper plastic ring and the lower plastic ring, and an inner clamping part protrudes out of the inner side of the joint of the upper plastic ring and the lower plastic ring; a lower clamping groove is formed between the outer clamping part and the outer side of the lower plastic ring, an upper clamping groove is formed between the inner clamping part and the inner side of the upper plastic ring, and the lower end of the inner side injection molding body extends into the upper clamping groove; the lower plastic ring is also provided with a bulge which protrudes outwards, the outer diameter of the bulge is not more than that of the upper plastic ring, and the inner diameter of the inner side injection molding body is not more than that of the annular bulge.
6. The combination sealing cuvette lid according to claim 5, wherein: an annular groove is formed in the inner side of the lower cover above the inner thread, the outer clamping portion extends into the annular groove of the lower cover, and the outer side of the upper plastic ring is tightly attached to the inner side of the buckling portion of the lower cover, so that a sealing element is fixedly mounted; and a lower cover buckling part is arranged above the annular groove.
7. A unitized sealed test tube using the unitized sealed test tube cap of any one of claims 1-6, wherein: the pipe body is cylindrical, external threads are arranged at the upper end of the pipe body and matched with the internal threads arranged on the inner side of the lower cover, a semicircular pipe bottom is arranged at the lower end of the pipe body, and the lowest part of the semicircular pipe bottom is higher than the bottom edge of the pipe body.
8. The combination sealed cuvette of claim 7, wherein: the top of the upper cover is provided with an opening or a groove for installing the top cover with the logo.
9. The combination sealed cuvette of claim 7, wherein: the gas collecting support is installed in the pipe body and comprises a cylindrical support ring, a conical gas collecting chamber is arranged on one side of the support ring, the edge of the gas collecting chamber forms a concave part of the gas collecting chamber with an arc-shaped concave part towards the inside of the support ring, and a lower opening of the gas collecting support is formed between the lower part of the gas collecting chamber and the pipe body.
10. The combination sealed cuvette of claim 7, wherein: the sealing member is through the realization of double-colored double shot moulding, and wherein, the hardness of outside injection molding is greater than the inboard injection molding, the outside injection molding adopts the TPE material, the inboard injection molding adopts PE or TPU or tetrafluoro or silica gel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021694790.5U CN212532992U (en) | 2020-08-14 | 2020-08-14 | Combined sealing test tube cover and sealing test tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021694790.5U CN212532992U (en) | 2020-08-14 | 2020-08-14 | Combined sealing test tube cover and sealing test tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212532992U true CN212532992U (en) | 2021-02-12 |
Family
ID=74528828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021694790.5U Active CN212532992U (en) | 2020-08-14 | 2020-08-14 | Combined sealing test tube cover and sealing test tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212532992U (en) |
-
2020
- 2020-08-14 CN CN202021694790.5U patent/CN212532992U/en active Active
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