CN210221588U - Sampling device capable of preventing backflow - Google Patents
Sampling device capable of preventing backflow Download PDFInfo
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- CN210221588U CN210221588U CN201920951398.5U CN201920951398U CN210221588U CN 210221588 U CN210221588 U CN 210221588U CN 201920951398 U CN201920951398 U CN 201920951398U CN 210221588 U CN210221588 U CN 210221588U
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- sampling tube
- ring
- suction nozzle
- sampling
- nut
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Abstract
The utility model relates to the technical field of sampling devices, in particular to a sampling device capable of preventing backflow, which comprises a sampling tube, wherein the sampling tube is of a cylindrical structure which is communicated from top to bottom, the bottom of the sampling tube is provided with a lower magnetic suction ring, the bottom of the lower magnetic suction ring is provided with a sealing groove, the bottom of the lower magnetic suction ring is provided with a suction nozzle, the suction nozzle is of a conical structure which is communicated from top to bottom, the inside of the suction nozzle is provided with a sealing sheet, the top of the sealing sheet is provided with a spring, the top of the suction nozzle is provided with an upper magnetic suction ring, and; the top of sampling tube is equipped with the spacing ring, and the cylinder outer wall of sampling tube is equipped with the screw thread, and sampling tube cylinder outer wall is equipped with the nut, and the top of spacing ring is equipped with the rubber cap, the utility model discloses a gasket effectively avoids the interior liquid of sampling device to take place the backward flow, simultaneously, inhales the cooperation between the ring through last magnetism and inhale down between ring between suction nozzle and the sampling tube, realizes connecting, and convenient the dismantlement has improved the convenience, has simplified the operation.
Description
Technical Field
The utility model relates to a sampling device technical field specifically is a sampling device that can prevent backward flow.
Background
In medical work, some liquid samples are often collected for detection and analysis, and the existing sampling tool is complex to operate and easy to generate backflow.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a can prevent sampling device of backward flow to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a sampling device capable of preventing backflow comprises a sampling tube, wherein the sampling tube is of a cylindrical structure which is communicated up and down, a lower magnetic suction ring is arranged at the bottom of the sampling tube, a sealing groove is formed in the bottom of the lower magnetic suction ring, a suction nozzle is arranged at the bottom of the lower magnetic suction ring, the suction nozzle is of a conical structure which is communicated up and down, a sealing sheet is arranged inside the suction nozzle, an upper magnetic suction ring is arranged at the top of the suction nozzle, and a sealing gasket is arranged at the top of the upper magnetic suction ring; the top of sampling tube is equipped with the spacing ring, the cylinder outer wall of sampling tube is equipped with the screw thread, sampling tube cylinder outer wall is equipped with the nut, the top of spacing ring is equipped with the rubber cap.
Preferably, the sampling tube, the suction nozzle and the rubber cap are communicated with each other.
Preferably, the bottom of the sampling tube and the top of the lower magnetic suction ring are fixedly bonded through glue, the bottom of the upper magnetic suction ring and the top of the suction nozzle are fixedly bonded through glue, and the upper magnetic suction ring and the sealing gasket are of an integrally formed structure.
Preferably, the lower magnetic attraction ring is magnetically connected with the upper magnetic attraction ring, and the sealing gasket is in plug-in fit with the sealing groove.
Preferably, the diameter of sealing piece is unanimous with the top internal diameter of suction nozzle, just the sealing piece contacts with the inner wall of suction nozzle, the spring bottom contacts with the sealing piece top, just the top of spring side and the inner wall welded fastening of suction nozzle.
Preferably, the sampling tube with the spacing ring is the integrated into one piece structure, the sampling tube runs through the nut, nut and screw thread looks adaptation, the external diameter of nut is unanimous with the external diameter of spacing ring, just the top of nut is equipped with the rubber pad.
Preferably, the diameter of the bottom of the rubber cap is consistent with the outer diameter of the sampling tube, and the bottom of the rubber cap is in sleeve joint with the sampling tube.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses a gasket effectively avoids the liquid in the sampling device to take place the backward flow, simultaneously, inhales the ring through last magnetism between suction nozzle and the sampling tube and inhale the cooperation between the ring down, realizes being connected, when guaranteeing to seal, convenient dismantlement, the medical staff of being convenient for remove the liquid that awaits measuring in the device, has improved the convenience, has simplified the operation.
2. The utility model discloses set up the screw thread on the sampling tube to cooperate through nut and screw thread, when the rubber cap inserts the sampling tube, because the existence of spacing ring, the rubber cap is located the part arch of spacing ring, screw up the nut, the top of nut then will be located the rubber cap of gag lever post department closely fixed, effectively avoided droing of rubber cap, the reliability of device has been improved, and simultaneously, the rubber cap is as the part that easily ages, more makes things convenient for the change of rubber cap through this structure, the life of device has been improved.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is an exploded schematic view of the present invention;
FIG. 3 is a schematic cross-sectional view of the nozzle of the present invention;
fig. 4 is a schematic cross-sectional view of the lower magnetic attraction ring of the present invention.
In the figure: 1. sampling tube, 11, lower magnetic ring, 111, sealing groove, 12, limit ring, 13, screw thread, 14, nut, 141, rubber pad, 2, suction nozzle, 21, upper magnetic ring, 211, sealing pad, 22, sealing piece 23, spring, 3, rubber cap.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Referring to fig. 1-4, the present invention provides a technical solution:
a sampling device capable of preventing backflow comprises a sampling tube 1, wherein the sampling tube 1 is of a vertically through cylindrical structure, a lower magnetic attraction ring 11 is arranged at the bottom of the sampling tube 1, a sealing groove 111 is formed in the bottom of the lower magnetic attraction ring 11, a suction nozzle 2 is arranged at the bottom of the lower magnetic attraction ring 11, the suction nozzle 2 is of a vertically through conical structure, a sealing sheet 22 is arranged inside the suction nozzle 2, an upper magnetic attraction ring 21 is arranged at the top of the suction nozzle 2, and a sealing gasket 211 is arranged at the top of the upper magnetic attraction ring 21; the top of sampling tube 1 is equipped with spacing ring 12, and the cylinder outer wall of sampling tube 1 is equipped with screw thread 13, and 1 cylinder outer wall of sampling tube is equipped with nut 14, and the top of spacing ring 12 is equipped with rubber cap 3.
In this embodiment, the sampling tube 1, the suction nozzle 2 and the rubber cap 3 are communicated with each other, so as to ensure the normal use of the device.
In this embodiment, the bottom of the sampling tube 1 is fixed to the top of the lower magnetic attraction ring 11 through glue bonding, so that the lower magnetic attraction ring 11 is prevented from falling off, the bottom of the upper magnetic attraction ring 21 is fixed to the top of the suction nozzle 2 through glue bonding, the upper magnetic attraction ring 21 is prevented from falling off, and the upper magnetic attraction ring 21 and the sealing gasket 211 are of an integrally formed structure, so that the durability of the sampling tube is improved.
In this embodiment, lower magnetism is inhaled ring 11 and is inhaled ring 21 magnetism with last magnetism and be connected, conveniently pulls down suction nozzle 2, takes out the liquid that awaits measuring in the sampling tube 1, simultaneously, is favorable to changing each part of equipment, and the sealed pad 211 cooperates with the grafting of seal groove 111, guarantees the leakproofness between suction nozzle 2 and sampling tube 1.
In this embodiment, the diameter of gasket 22 is unanimous with the top internal diameter of suction nozzle 2, and the gasket 22 contacts with the inner wall of suction nozzle 2, spring 23 bottom contacts with gasket 22 top, and the top of spring 23 side and the inner wall welded fastening of suction nozzle 2, the liquid that awaits measuring flows to the sampling tube 1 inside through gasket 22, because the effect of pressure, gasket 22 compression spring 23 upwards takes place to deflect, the liquid that awaits measuring this moment flows into the sampling tube 1 inside, when the liquid that awaits measuring wants to flow out through suction nozzle 2 from the sampling tube 1 inside, under the common effect of gravity of liquid in spring 23 and the sampling tube 1, gasket 22 and 2 inner wall in close contact with of suction nozzle, the inside liquid that awaits measuring of sampling tube 1 has been prevented flows out, realize the effect that prevents the backward.
Get sample tube 1 and spacing ring 12 and be integrated into one piece structure in this embodiment, improve its durability, sample tube 1 runs through nut 14, and nut 14 can slide on sample tube 1, and nut 14 and screw 13 looks adaptation, the external diameter of nut 14 is unanimous with the external diameter of spacing ring 12, and nut 14 can effectively be fixed with the rubber cap 3 that is located gag lever post 12 department, and the top of nut 14 is equipped with rubber pad 141, avoids the top of nut 14 to cause wearing and tearing to rubber cap 3.
In this embodiment, 3 bottom diameters of rubber cap are unanimous with 1 external diameter of sampling tube, conveniently overlap rubber cap 3 on sampling tube 1, and the bottom of rubber cap 3 cup joints the cooperation with sampling tube 1.
The sampling device of this embodiment that can prevent backward flow is when using, press rubber cap 3, under the effect of inside and outside pressure difference, wait to examine during liquid is inhaled sampling tube 1, spring 23 is compressed this moment, gasket 22 bottom and suction nozzle 2 contactless, when waiting to examine during liquid wants to flow out sampling tube 1, under the gravity of the liquid that awaits measuring and the spring action of spring 23, gasket 22 bottom and 2 inner wall in close contact with of suction nozzle, effectively avoid the emergence of backward flow, when needing to take out the liquid that awaits measuring, only need hard with suction nozzle 2 and sampling tube 1 separation can, when needing to be changed the rubber cap, screw down nut 14, can take off rubber cap 3, the device simple structure, high durability and convenient use, and convenient cleaning and dismantling.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A sampling device capable of preventing backflow comprises a sampling tube (1), and is characterized in that: the sampling tube (1) is of a vertically-through cylindrical structure, a lower magnetic suction ring (11) is arranged at the bottom of the sampling tube (1), a sealing groove (111) is formed in the bottom of the lower magnetic suction ring (11), a suction nozzle (2) is arranged at the bottom of the lower magnetic suction ring (11), the suction nozzle (2) is of a vertically-through conical structure, a sealing sheet (22) is arranged inside the suction nozzle (2), a spring (23) is arranged at the top of the sealing sheet (22), an upper magnetic suction ring (21) is arranged at the top of the suction nozzle (2), and a sealing gasket (211) is arranged at the top of the upper magnetic suction ring (21); the top of sampling tube (1) is equipped with spacing ring (12), the cylinder outer wall of sampling tube (1) is equipped with screw thread (13), sampling tube (1) cylinder outer wall is equipped with nut (14), the top of spacing ring (12) is equipped with rubber cap (3).
2. The backflow prevention sampling device of claim 1, wherein: the sampling tube (1), the suction nozzle (2) and the rubber cap (3) are communicated with each other.
3. The backflow prevention sampling device of claim 1, wherein: the magnetic suction device is characterized in that the bottom of the sampling tube (1) is fixedly bonded with the top of the lower magnetic suction ring (11) through glue, the bottom of the upper magnetic suction ring (21) is fixedly bonded with the top of the suction nozzle (2) through glue, and the upper magnetic suction ring (21) and the sealing gasket (211) are of an integrally formed structure.
4. The backflow prevention sampling device of claim 1, wherein: the lower magnetic attraction ring (11) is magnetically connected with the upper magnetic attraction ring (21), and the sealing gasket (211) is in plug-in fit with the sealing groove (111).
5. The backflow prevention sampling device of claim 1, wherein: the diameter of gasket (22) is unanimous with the top internal diameter of suction nozzle (2), just gasket (22) contacts with the inner wall of suction nozzle (2), spring (23) bottom contacts with gasket (22) top, just the top of spring (23) side and the inner wall welded fastening of suction nozzle (2).
6. The backflow prevention sampling device of claim 1, wherein: sampling tube (1) with spacing ring (12) are the integrated into one piece structure, sampling tube (1) runs through nut (14), nut (14) and screw thread (13) looks adaptation, the external diameter of nut (14) is unanimous with the external diameter of spacing ring (12), just the top of nut (14) is equipped with rubber pad (141).
7. The backflow prevention sampling device of claim 1, wherein: the diameter of the bottom of the rubber cap (3) is consistent with the outer diameter of the sampling tube (1), and the bottom of the rubber cap (3) is in sleeve joint with the sampling tube (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920951398.5U CN210221588U (en) | 2019-06-24 | 2019-06-24 | Sampling device capable of preventing backflow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920951398.5U CN210221588U (en) | 2019-06-24 | 2019-06-24 | Sampling device capable of preventing backflow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210221588U true CN210221588U (en) | 2020-03-31 |
Family
ID=69933627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920951398.5U Active CN210221588U (en) | 2019-06-24 | 2019-06-24 | Sampling device capable of preventing backflow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210221588U (en) |
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2019
- 2019-06-24 CN CN201920951398.5U patent/CN210221588U/en active Active
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