CN216847838U - Online cleaning sampling needle mechanism - Google Patents
Online cleaning sampling needle mechanism Download PDFInfo
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- CN216847838U CN216847838U CN202123187600.8U CN202123187600U CN216847838U CN 216847838 U CN216847838 U CN 216847838U CN 202123187600 U CN202123187600 U CN 202123187600U CN 216847838 U CN216847838 U CN 216847838U
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- 238000005070 sampling Methods 0.000 title claims abstract description 81
- 238000004140 cleaning Methods 0.000 title claims abstract description 71
- 238000005406 washing Methods 0.000 claims abstract description 47
- 239000007788 liquid Substances 0.000 claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 49
- 238000007789 sealing Methods 0.000 claims description 15
- 230000002572 peristaltic effect Effects 0.000 claims description 11
- 239000008213 purified water Substances 0.000 claims description 6
- 239000002351 wastewater Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 4
- 238000012545 processing Methods 0.000 abstract description 3
- 238000013461 design Methods 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 5
- 239000002699 waste material Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000011835 investigation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model relates to an online cleaning sampling needle mechanism, which comprises an installation seat, a sampling needle arranged on the installation seat, a needle washing component arranged at the bottom of the installation seat and a needle washing pipeline communicated with the needle washing component; the top of the sampling needle is communicated with a sample taking and placing pipeline, and a plunger pump is arranged on the sample taking and placing pipeline; the utility model discloses a wash needle subassembly simple structure, convenient processing to wash the sealed hole at chamber both ends and the external diameter fit design of sampling needle, prevent effectively that the washing liquid from flowing from the bottom, the effect is better.
Description
Technical Field
The utility model belongs to medical instrument's analytical equipment field, concretely relates to online cleaning sampling needle mechanism.
Background
The cleaning mode of sampling needle among the current medical detection analytical equipment has 2, and one kind is the washing subassembly of independent fixed position, and the sampling needle need move to wash sampling needle tip outer wall and inner wall washing liquid collection in this subassembly. The other type is coaxially fixed with the sampling needle, the sampling needle moves up and down, and cleaning liquid on the whole outer wall and inner wall of the sampling needle can be cleaned and collected. Compared with the cleaning assembly with the sampling needle coaxially fixed and the cleaning assembly with the fixed position, the cleaning assembly with the coaxial fixation has the advantages that the sampling needle can be cleaned without moving to the fixed position, the normal work of the sampling needle is not interfered during cleaning, the residual space is saved, and the operation time is saved. However, the existing sampling needle coaxial cleaning assembly has the following problems: 1. the internal structure is complex, and the processing is difficult; 2. the bottom aperture is large, and a small amount of cleaning solution leaks out in the use process.
As disclosed in patent application No. CN111167782A, a sampling needle cleaning device is disclosed, which comprises a swab and a rotor installed in an inner cavity, wherein the swab is provided with an inner cavity, and a liquid inlet and a liquid outlet are arranged on a side wall of the swab; the rotor is provided with a cleaning cavity capable of accommodating the insertion of the sampling needle, the outer side of the rotor is provided with at least one blade, the side wall of the rotor is provided with at least one liquid through port, and the liquid through port is communicated with the inner cavity and the cleaning cavity. The sampling needle is inserted into the cleaning cavity, cleaning liquid flows away through the liquid outlet after flowing into the inner cavity from the liquid inlet, the cleaning liquid flows in the inner cavity directionally and drives the rotor to rotate, the cleaning liquid in the inner cavity flows into the cleaning cavity through the liquid inlet, and the cleaning liquid in the cleaning cavity carries out all-dimensional washing on the sampling needle under the driving of the rotor.
As disclosed in patent application No. CN108246695A, a cleaning device for a sampling needle is disclosed, which comprises a cleaning tank, a tank cover arranged at one end of the cleaning tank, and a joint; the tank cover is provided with a through groove and a spraying hole communicated with the through groove; a first flow passage is arranged in the cleaning pool and is communicated with the through groove; the first flow channel is arranged in a slender column shape; the one end of keeping away from the pond lid in washing pond is equipped with the holding tank, connects demountable installation in the holding tank, is equipped with the second runner in the joint, and the second runner corresponds the intercommunication with first runner.
The above-mentioned problems are present in both of the solutions described in the above two patents.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that an online cleaning sampling needle mechanism is provided, online cleaning can be realized, and simple structure.
The utility model adopts the technical proposal that: an online cleaning sampling needle mechanism comprises a mounting seat, a sampling needle arranged on the mounting seat, a needle washing component arranged at the bottom of the mounting seat and a needle washing pipeline communicated with the needle washing component; the top of the sampling needle is communicated with a sample taking and placing pipeline, and a plunger pump is arranged on the sample taking and placing pipeline.
Furthermore, the needle washing assembly comprises a needle washing seat, a cleaning cavity arranged inside the needle washing seat, and a water inlet hole and a water suction hole communicated with the cleaning cavity, wherein the upper end and the lower end of the needle washing seat, which are positioned in the cleaning cavity, are respectively and correspondingly provided with a sealing hole, the sampling needle penetrates through the sealing hole at the upper end to enter the cleaning cavity, and the needle washing pipeline is communicated with the water inlet hole and the water suction hole.
Furthermore, an up-and-down moving arm is arranged on the mounting seat, and the upper end of the sampling needle is fixed on the up-and-down moving arm and moves up and down along with the up-and-down moving arm.
Furthermore, the syringe washing pipeline comprises a water suction pipeline communicated with the water suction hole and a water inlet pipeline communicated with the water inlet hole.
Furthermore, a liquid suction pump is arranged on the water suction pipeline, and a waste water barrel is arranged at the tail end of the water suction pipeline.
Furthermore, two paths of water inlet pipelines are connected in parallel, one path of water inlet pipelines is communicated with the cleaning liquid barrel and is provided with a first peristaltic pump, and the other path of water inlet pipelines is communicated with the purified water barrel and is provided with a second peristaltic pump.
Furthermore, an electromagnetic switching valve is arranged on the sample taking and placing pipeline, and one end of the water inlet pipeline is communicated with the electromagnetic switching valve.
Furthermore, the unilateral clearance between the sealing hole and the sampling needle is 0.01 mm.
The utility model discloses an actively the effect does: the utility model discloses a wash needle subassembly simple structure, convenient processing to wash the sealed hole at chamber both ends and the external diameter fit design of sampling needle, prevent effectively that the washing liquid from flowing from the bottom, the effect is better.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the sampling needle and the needle washing assembly of the present invention;
FIG. 3 is a schematic cross-sectional view of the needle-washing assembly of the present invention;
fig. 4 is a schematic diagram of the syringe cleaning circuit of the present invention.
Detailed Description
Example 1
As shown in fig. 1-4, the present embodiment provides an online cleaning sampling needle mechanism, which includes a mounting base 1, an up-down moving arm 21 disposed on the mounting base 1, a sampling needle 2 with one end fixed on the up-down moving arm 21, a sample taking and placing pipeline 15 connected to the top of the sampling needle 2, and a needle washing component 11 disposed at the bottom of the mounting base 1 and corresponding to the sampling needle 2, wherein the needle washing pipeline is connected to the needle washing component 11.
Preferably, the sample taking and placing line 15 is provided with an electromagnetic switching valve 3 and a plunger pump 4.
The washing needle assembly 11 comprises a washing needle seat 16, a cleaning cavity 17 arranged inside the washing needle seat 16, and a water inlet hole 18 and a water suction hole 19 which are arranged on the side wall of the washing needle seat 16 and communicated with the cleaning cavity 17, wherein the water inlet hole 18 is positioned above the water suction hole 19, sealing holes 20 are respectively arranged at the upper end and the lower end of the washing needle seat 16, the positions of the sealing holes 20 correspond to the positions of the cleaning cavity 17, the cleaning cavity 17 is a vertically arranged long groove, and the sampling needle 2 can be inserted into the cleaning cavity 17 from the sealing hole 20 at the top of the washing needle seat 16 and then penetrates out of the sealing hole 20 at the bottom.
The size of the sealing hole 20 corresponds to the size of the sampling needle 2, and after the sampling needle 2 passes through the washing needle assembly 11, the washing cavity 17 is in a sealing state, so that water in the washing cavity 17 can be discharged from the water suction hole 19.
The syringe washing pipeline comprises a water suction pipeline 14 communicated with a water suction hole 19 and a water inlet pipeline 13 communicated with a water inlet hole 18, and a liquid suction pump 10 and a waste water barrel 9 are arranged on the water suction pipeline 14. Two pipelines are connected in parallel on the water inlet pipeline 13, one of the pipelines is a cleaning liquid conveying pipeline, a first peristaltic pump 8 and a cleaning liquid barrel 6 are arranged on the pipeline, the other pipeline is a purified water conveying pipeline, a second peristaltic pump 7 and a purified water barrel 5 are arranged on the pipeline, and one end of the water inlet pipeline 13 is communicated with the electromagnetic switching valve 3.
The sampling and cleaning process of the sampling needle is that the sampling needle 2 moves to the upper part of the test tube 12 and moves downwards to the lower part of the liquid level of the sample in the test tube, the electromagnetic switching valve 3 is communicated with the sampling needle 2 and the plunger pump 4, and the plunger pump 4 starts to suck a quantitative sample and then stops. The sampling needle 2 starts to move upwards to finish sampling. After the sampling needle 2 moves to the top, the mounting seat 1 moves to the upper part of a reaction cup for placing a sample, the sampling needle 2 starts to move downwards to the inner part of the reaction cup, the plunger pump 4 is started, the sample in the sampling needle 2 is pushed into the reaction cup, and the sampling needle 2 starts to move upwards. Meanwhile, the liquid suction pump 10 and the first peristaltic pump 8 are started, the cleaning liquid is extracted from the cleaning liquid barrel 6 and is sent to the needle washing assembly 11, the outer wall of the sampling needle 2 is washed, and the waste liquid flows into the waste liquid barrel 9 through the liquid suction pump 10. After the sampling needle 2 moves to the top, the bottom of the sampling needle 2 is still in the cleaning cavity at the moment, and the electromagnetic switching valve 3 is switched to disconnect the connection with the plunger pump 4. The sampling needle 2 is connected with a second peristaltic pump 8, and the cleaning solution washes the inner wall of the sampling needle 2, flows out from the end hole of the needle, passes through a liquid suction pump 10, and flows into a waste liquid barrel 9. After cleaning is finished, the first peristaltic pump 8 is closed, the second peristaltic pump 7 is opened, the cleaning liquid is changed into pure water for cleaning, and cleaning of the inner wall of the sampling needle 2 is finished. When the inner wall is cleaned, one part of cleaning liquid and purified water enters the cleaning cavity through the water inlet pipeline 13 to clean the outer wall, but the normal cleaning of the inner wall is not influenced.
When the sampling needle moves downwards next time, the liquid suction pump 10 and the second peristaltic pump 7 are started, and the outer wall of the sampling needle 2 is cleaned by the purified water.
The cleaning of the outer wall and the inner wall of the sampling needle 2 in the technical scheme of the embodiment is finished in the sampling and pipetting process of the sampling needle 2, so that an independent cleaning step is not needed, and the running time of the device is saved.
Example 2
In this embodiment, the washing needle assembly 11 of the present embodiment is provided at the bottom of the mounting base 1, and the vertical movement arm 21 is provided on the mounting base 1, thereby moving the sampling needle 2 up and down. The structure of the up-down moving arm 21 is not limited as long as it can move the sampling needle 2 up and down, and is widely known to those skilled in the art, and will not be described herein.
Example 3
The present embodiment is further limited to the needle washing assembly of embodiment 1, as shown in fig. 2 and 3, in the present embodiment, the needle washing base 16 includes a base body and a cover mounted on the top of the base body through bolts, a washing cavity 17 is formed in the base body, and an upper sealing hole 20 is formed on the cover. The unilateral clearance of two sealed holes and sampling needle 2 is 0.01mm, and upper cover, pedestal and sampling needle 2 constitute and seal the inner chamber relatively, and when the hole 19 that absorbs water absorbed, form the negative pressure environment, had effectively prevented that the waste liquid from passing two sealed holes about sampling needle 2 from flowing.
When the end part and the inner wall of the sampling needle are cleaned, when the water suction hole 19 sucks water, the lower sealing hole 20 receives atmospheric pressure to enter a large amount of gas to prevent water from flowing out of the lower sealing hole due to the negative pressure effect in the cleaning cavity 17.
At present, the technical scheme of the utility model is that a pilot test is carried out, namely a small-scale test of products before large-scale mass production; after the pilot test is finished, the investigation for the use of the user is carried out in a small range, and the investigation result shows that the satisfaction degree of the user is higher; the preparation of products for formal production for industrialization (including intellectual property risk early warning research) has been started.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.
Claims (8)
1. An online cleaning sampling needle mechanism is characterized by comprising a mounting seat (1), a sampling needle (2) arranged on the mounting seat (1), a needle washing component (11) arranged at the bottom of the mounting seat (1) and a needle washing pipeline communicated with the needle washing component (11); the top of the sampling needle (2) is communicated with a sampling and lofting pipeline (15), and a plunger pump (4) is arranged on the sampling and lofting pipeline (15).
2. The online cleaning sampling needle mechanism of claim 1, characterized in that the needle washing assembly (11) comprises a needle washing seat (16), a cleaning cavity (17) arranged inside the needle washing seat (16), and a water inlet hole (18) and a water suction hole (19) communicated with the cleaning cavity (17), sealing holes (20) are respectively and correspondingly arranged on the upper end and the lower end of the needle washing seat (16) and positioned in the cleaning cavity (17), the sampling needle (2) penetrates through the sealing hole (20) at the upper end to enter the cleaning cavity (17), and the needle washing pipeline is communicated with the water inlet hole (18) and the water suction hole (19).
3. An on-line cleaning sampling needle mechanism according to claim 1, characterized in that an up-and-down moving arm (21) is provided on the mounting base (1), and the upper end of the sampling needle (2) is fixed on the up-and-down moving arm (21) and moves up and down with it.
4. An on-line cleaning sampling needle mechanism according to claim 2, wherein the needle washing tube circuit comprises a suction circuit (14) communicating with the suction hole (19) and a water inlet circuit (13) communicating with the water inlet hole (18).
5. An on-line cleaning sampling needle mechanism according to claim 4, characterized in that a liquid suction pump (10) is arranged on the water suction pipeline (14), and a waste water barrel (9) is arranged at the tail end of the water suction pipeline (14).
6. An on-line cleaning sampling needle mechanism according to claim 4, characterized in that two paths are connected in parallel on the water inlet pipeline (13), one path is communicated with the cleaning liquid barrel (6) and is provided with a first peristaltic pump (8), and the other path is communicated with the purified water barrel (5) and is provided with a second peristaltic pump (7).
7. The mechanism for cleaning the sampling needle on line as claimed in claim 4 or 6, wherein the sampling and lofting pipeline (15) is provided with an electromagnetic switching valve (3), and one end of the water inlet pipeline (13) is communicated with the electromagnetic switching valve (3).
8. An on-line cleaning sampling needle mechanism according to claim 2, characterized in that the unilateral clearance between the sealing hole (20) and the sampling needle (2) is 0.01 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123187600.8U CN216847838U (en) | 2021-12-17 | 2021-12-17 | Online cleaning sampling needle mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123187600.8U CN216847838U (en) | 2021-12-17 | 2021-12-17 | Online cleaning sampling needle mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216847838U true CN216847838U (en) | 2022-06-28 |
Family
ID=82108624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123187600.8U Active CN216847838U (en) | 2021-12-17 | 2021-12-17 | Online cleaning sampling needle mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216847838U (en) |
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2021
- 2021-12-17 CN CN202123187600.8U patent/CN216847838U/en active Active
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