CN217527539U - Leakage-proof extraction tube - Google Patents
Leakage-proof extraction tube Download PDFInfo
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- CN217527539U CN217527539U CN202221585849.6U CN202221585849U CN217527539U CN 217527539 U CN217527539 U CN 217527539U CN 202221585849 U CN202221585849 U CN 202221585849U CN 217527539 U CN217527539 U CN 217527539U
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- hole
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- extraction tube
- sample dripping
- sealing column
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Abstract
The utility model discloses a leakage-proof extraction tube, which comprises a tube body and a tube cap, wherein a sample dripping head is arranged on the tube body, and a sample dripping hole is arranged in the sample dripping head; the pipe cap is internally provided with a cover groove with an opening at one end and used for being matched with the sample dripping head, and the bottom of the cover groove is provided with a sealing column used for being matched with the sample dripping hole in a sealing mode. The utility model discloses extraction tube of prevention of liquid leakage through setting up the pipe cap, utilizes the cover groove can cover on the dripping appearance head, utilizes the sealed post and the airtight cooperation in dripping appearance hole that set up at the cover groove tank bottom simultaneously, can improve sealed effect, prevents the weeping.
Description
Technical Field
The utility model belongs to the technical field of medical instrument, specificly be a prevent extraction tube that liquid revealed.
Background
The extraction tube is a tool integrating sampling and sample adding, and is mainly used for in vitro diagnosis projects. Chinese patent publication No. CN216224457U discloses an extraction tube. This draw tube includes pipe shaft, tube cap and dripper all connect on the pipe shaft through an anticreep muscle, the tube cap is established the mouth end position at the pipe shaft including the lid with the range of motion of dripper under the anticreep muscle tractive, the mouth end of pipe shaft is equipped with annular catching groove, the tube cap inboard is provided with detains with annular catching groove assorted annular, annular is detained and can is detained annular catching groove. This extraction tube realizes sealedly through the mode that the mouth at the pipe shaft was equipped with annular catching groove and was detained at the tube cap inboard setting ring, though has certain sealed effect, but because the pipe shaft of extraction tube, tube cap etc. can extrude the pressure deformation, when receiving the extrusion, annular catching groove and annular are detained and can be collapsed and open, have the weeping risk.
Disclosure of Invention
In view of this, the utility model aims at providing a leak protection liquid's extraction tube can improve sealed effect, prevents the weeping.
In order to achieve the above purpose, the utility model provides a following technical scheme:
a leakage-proof extraction tube comprises a tube body and a tube cap, wherein a sample dripping head is arranged on the tube body, and a sample dripping hole is formed in the sample dripping head; the pipe cap is internally provided with a cover groove with an opening at one end and used for being matched with the sample dripping head, and the bottom of the cover groove is provided with a sealing column used for being matched with the sample dripping hole in a sealing mode.
Further, the sealing column is in interference fit with the sample dripping hole.
Further, the outer diameter of the sealing column gradually increases along the direction from the opening of the cover groove to the groove bottom.
Furthermore, the sample dripping hole comprises a hole inner end communicated with the pipe body and a hole outer end communicated with the external environment, and the inner diameter of the sample dripping hole is gradually reduced along the direction from the hole outer end to the hole inner end; or one end of the sample dropping hole close to the outer end of the hole is provided with a reducing section, and the inner diameter of the reducing section is gradually reduced along the direction of the outer end of the hole pointing to the inner end of the hole.
Further, the sealing column is a cone, the sample dripping hole or the reducing section is a conical hole, and the cone angle alpha of the sealing column is larger than the cone angle beta of the sample dripping hole or the reducing section.
Further, the taper angle α of the sealing post is: alpha is more than or equal to 5 degrees and less than or equal to 20 degrees.
Further, the taper angle β of the conical hole satisfies: the angle of alpha-beta is more than or equal to 1 degree and less than or equal to 5 degrees.
Further, the cover groove is in clearance fit with the sample dropping head.
The beneficial effects of the utility model reside in that:
the utility model discloses extraction tube of prevention of liquid leakage through setting up the pipe cap, utilizes the cover groove can cover on the dripping appearance head, utilizes the sealed post and the airtight cooperation in dripping appearance hole that set up at the cover groove tank bottom simultaneously, can improve sealed effect, even if receive under the circumstances such as extrusion, also can keep sealing performance, prevent the weeping.
In addition, the sealing performance can be improved by the interference fit between the sealing column and the sample dropping hole; meanwhile, the cover groove is in clearance fit with the sample dropping head, so that the cover can be conveniently covered on the sample dropping head or taken down from the sample dropping head.
Drawings
In order to make the purpose, technical scheme and beneficial effect of the utility model clearer, the utility model provides a following figure explains:
FIG. 1 is a schematic view of an embodiment of a leakage-proof extraction tube of the present invention, particularly a state diagram when a plug is inserted into a bottle body but a cap is not covered;
FIG. 2 is a schematic view of a connection structure between the bottle body and the plug;
FIG. 3 is a full sectional view of the extraction tube with the plug inserted into the mouth and the cap applied;
FIG. 4 is detail A of FIG. 3;
fig. 5 is detail B of fig. 4.
Description of reference numerals:
11-a pipe cap; 12-a sample dropping head; 13-a sample dropping hole; 13 a-the outer end of the bore; 13 b-Kong Naduan; 14-a bottle body; 15-pipe plug; 16-a connecting strap; 17-a lid slot; 18-sealing the column.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.
As shown in FIG. 1, the extraction tube for preventing liquid leakage of this embodiment comprises a tube body and a cap 11. The tube body is provided with a sample dripping head 12, and a sample dripping hole 13 is arranged in the sample dripping head 12. Specifically, as shown in fig. 2, the tube body of the present embodiment includes a bottle body 14 and a plug 15, the dropper 12 is disposed on the plug 15, a connecting band 16 is disposed between the bottle body 14 and the plug 15, and the connecting band 16 connects the bottle body 14 and the plug 15 into a whole. As shown in fig. 4-5, a cover groove 17 with an open end and used for cooperating with the sample dripping head 12 is provided in the cap 11, and a sealing post 18 for hermetically cooperating with the sample dripping hole 13 is provided at the bottom of the cover groove 17, so that the cover groove 17 is covered on the sample dripping head 12, and the sealing post 18 is inserted into the sample dripping hole 13, and the sealing effect can be improved, the sealing requirement can be met, and liquid leakage can be prevented by using the hermetically cooperating relationship between the sealing post 18 and the sample dripping hole 13. Specifically, in this embodiment, the cover slot 17 is in clearance fit with the sample dripping head 12, and the fit clearance is L 1 To reduce the resistance of the cap 11 to being covered on the pipette tip 12 or removed from the pipette tip 12, for easy handling.
Specifically, in order to meet the sealing requirement between the sealing column 18 and the sample dropping hole 13, the embodiment adopts interference fit between the sealing column 18 and the sample dropping hole 13, and the interference fit amount is L 2 As shown in fig. 4-5. In order to facilitate the insertion of the sealing column 18 into the sample dropping hole 13 or the extraction of the sealing column 18 from the sample dropping hole 13, the outer diameter of the sealing column 18 is gradually increased along the direction pointing to the bottom of the groove of the opening of the cover groove 17 in the present embodiment, so that the head of the sealing column 18 away from the cover groove 17 is in clearance fit with the sample dropping hole 13, and thus the sealing column can be conveniently inserted into the sample dropping hole 13, and along with the increase of the depth of the sealing column 18 inserted into the sample dropping hole 13, the outer diameter of the sealing column 18 is gradually increased, and finally, the effect of interference fit is achieved. Specifically, as shown in fig. 4 to 5, in the present embodiment, in order to further facilitate the insertion and extraction of the sealing column 18 into and from the dripping hole 13, the dripping hole 13 is further provided with an inner diameterA shape whose dimension gradually changes along the axial direction thereof. Specifically, the sample dropping hole 13 includes an inner end 13a (shown in fig. 2) communicating with the tube body and an outer end 13b (shown in fig. 2) communicating with the external environment, the inner diameter of the sample dropping hole 13 gradually decreases along the direction in which the outer end 13b of the hole points to Kong Naduan a, and the sealing column 18 is inserted into the sample dropping hole 13 from the outer end 13b of the sample dropping hole 13. Of course, in other embodiments, a tapered section may be further provided at an end of the sample dropping hole 13 close to the hole outer end 13a, an inner diameter of the tapered section gradually decreases along the hole outer end finger 13b toward the hole inner end 13a, and the tapered section is used to cooperate with the sealing column 18, at this time, the hole diameter of the sample dropping hole 13 at other positions except the tapered section may be kept constant. Meanwhile, in order to satisfy the requirement of the close fit, the outer diameter of the sealing column 18 at a certain position is required to be larger than the maximum value of the inner diameter of the dripping hole 13. Specifically, in the present embodiment, the sealing column 18 is a cone, the sample dropping hole 13 or the diameter-variable section is a cone hole, and the cone angle α of the sealing column 18 is greater than the cone angle β of the sample dropping hole 13 or the diameter-variable section, so that the outer diameter of the head of the sealing column 18 is smaller than the maximum inner diameter of the sample dropping hole 13 or the diameter-variable section, but after the sealing column 18 is inserted into the sample dropping hole 13 or the diameter-variable section to a certain depth, the outer diameter of the sealing column 18 gradually increases and is greater than the maximum inner diameter of the sample dropping hole 13 or the diameter-variable section, thereby achieving the interference fit. Specifically, in the present embodiment, the preferable range of the taper angle α of the seal post 18 is: alpha is more than or equal to 5 degrees and less than or equal to 20 degrees, and the cone angle beta of the conical hole meets the following requirements: the angle alpha-beta is more than or equal to 1 degree and less than or equal to 5 degrees, namely the cone angle beta of the dripping hole 13 or the diameter-variable section is 1 to 5 degrees smaller than the cone angle alpha of the sealing column 18.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.
Claims (8)
1. The utility model provides a warning liquid's extraction tube, includes body and pipe cap, its characterized in that: a sample dripping head is arranged on the pipe body, and a sample dripping hole is formed in the sample dripping head; the pipe cap is internally provided with a cover groove with an opening at one end and used for being matched with the sample dripping head, and the bottom of the cover groove is provided with a sealing column used for being matched with the sample dripping hole in a sealing mode.
2. The leakage-proof extraction tube of claim 1, wherein: the sealing column is in interference fit with the sample dripping hole.
3. The leakage-proof extraction tube of claim 1, wherein: the outer diameter of the sealing column is gradually increased along the direction from the opening of the cover groove to the groove bottom.
4. The liquid leakage preventing extraction tube of claim 3, wherein: the sample dripping hole comprises a hole inner end communicated with the pipe body and a hole outer end communicated with the external environment, and the inner diameter of the sample dripping hole is gradually reduced along the direction of the hole outer end to the hole inner end; or one end of the sample dropping hole close to the outer end of the hole is provided with a reducing section, and the inner diameter of the reducing section is gradually reduced along the direction of the outer end of the hole pointing to the inner end of the hole.
5. The liquid leakage preventing extraction tube of claim 4, wherein: the sealing column is a cone, the sample dripping hole or the reducing section is a conical hole, and the cone angle alpha of the sealing column is larger than the cone angle beta of the sample dripping hole or the reducing section.
6. The liquid leakage preventing extraction tube of claim 5, wherein: the cone angle alpha of the sealing column is as follows: alpha is more than or equal to 5 degrees and less than or equal to 20 degrees.
7. The leakage-proof extraction tube according to claim 5 or 6, wherein: the taper angle beta of the conical hole satisfies: the angle of alpha-beta is more than or equal to 1 degree and less than or equal to 5 degrees.
8. The leakage-proof extraction tube of claim 1, wherein: the cover groove is in clearance fit with the sample dripping head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221585849.6U CN217527539U (en) | 2022-06-23 | 2022-06-23 | Leakage-proof extraction tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221585849.6U CN217527539U (en) | 2022-06-23 | 2022-06-23 | Leakage-proof extraction tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217527539U true CN217527539U (en) | 2022-10-04 |
Family
ID=83419640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221585849.6U Active CN217527539U (en) | 2022-06-23 | 2022-06-23 | Leakage-proof extraction tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217527539U (en) |
-
2022
- 2022-06-23 CN CN202221585849.6U patent/CN217527539U/en active Active
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