CN213791706U - Liquid dropping device - Google Patents
Liquid dropping device Download PDFInfo
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- CN213791706U CN213791706U CN202022797558.0U CN202022797558U CN213791706U CN 213791706 U CN213791706 U CN 213791706U CN 202022797558 U CN202022797558 U CN 202022797558U CN 213791706 U CN213791706 U CN 213791706U
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Abstract
The utility model relates to a liquid dropping device, which comprises a pipe body and a cover body which are connected, wherein the top of the cover body is provided with a water dropper; the dripper comprises: the flow guide channel penetrates through the dripper; the sealing ring is arranged on the inner end ring surface and/or the outer end ring surface of the flow guide channel, the minimum width of the sealing ring is not less than 0.4mm, and the sealing ring is used for sealing the outer end ring surface of the inner end ring surface of the membrane. The drip bottle has the advantages that the sealing ring for sealing the film is arranged at least one end of the drip head, and the drip head can be sealed by using the sealing film on the sealing ring, so that the drip bottle with the solution pre-distributed has good sealing performance, and the solution in the drip bottle is not easy to flow out; in the using process, the sealing film arranged on the sealing ring is removed or damaged, so that the sealing ring can be used, and the operation is simple and convenient; the dropping bottle is designed in an integrated manner, so that the production cost is reduced.
Description
Technical Field
The utility model relates to a detection device technical field especially relates to a dropping liquid device.
Background
In biomedical diagnostics, dropper bottles are commonly used as drop or pipette tools. The dropping bottle can quantitatively add the solution which is subpackaged in advance in a dropping mode again, so that a user does not need to use a liquid transfer gun for liquid transfer operation.
In the related art, a screw cap is generally sleeved on a drip nozzle of a drip bottle, and the aim of sealing a solution outflow channel and preventing the solution in the drip bottle from leaking outwards is achieved through the matching of the screw cap and the drip nozzle. The drip nozzle is generally composed of three materials, namely a hard bottle cap, the drip nozzle and an outer cover, and each part is a mold of the outer cover (a screw cap) and the injection molding cost is relatively low, so that the aim of reducing the cost can be achieved by mass production.
However, with the development of diagnostic technology, many in vitro diagnostic reagents have been packaged in single-use mode, and the drip bottle needs to be pre-filled with solution manually, which results in a tedious use process of the drip bottle. In addition, the drip bottle for pre-dispensing the solution has poor sealing effect, and the solution is easy to flow out of the drip nozzle.
Therefore, there is a need for a pre-dispensing dropper that reduces the cost of manufacture and use, and avoids the outflow of pre-dispensed solution from the dropper nozzle, thereby meeting the need for disposable use of the dropper.
Disclosure of Invention
The utility model aims at providing a dropping device aiming at the defects in the prior art.
In order to achieve the purpose, the utility model adopts the technical proposal that:
a liquid dropping device comprises a pipe body and a cover body which are connected, wherein a water dropper is arranged at the top of the cover body;
the dripper comprises:
the flow guide channel penetrates through the inner space and the outer space of the cover body;
the inner end ring surface and the outer end ring surface of the flow guide channel are/is provided with a sealing ring, the sealing ring is arranged on the inner end ring surface and/or the outer end ring surface of the flow guide channel, and the minimum width of the sealing ring is not less than 0.4mm and is used for sealing a film.
In some of these embodiments, the tube is integrally formed with the cap, and the cap is inserted into the tube.
In some of these embodiments, further comprising:
a sealing membrane sealing the sealing ring arrangement.
In some of these embodiments, the cover comprises:
a first locking member provided at an outer wall of the cover body;
the body includes:
a second locking part disposed at an outer wall of the pipe body;
wherein the first locking member is locked to the second locking member when the cap is inserted into the tube.
In some embodiments, the connector further comprises a first end of the connector connected to the cover, a second end of the connector connected to the tube, and the tube, the connector and the cover are integrally formed.
In some of these embodiments, the linker comprises:
a third locking member disposed at one side of the connecting body and adjacent to the cover;
the fourth locking component is arranged on one side of the connecting body, is close to the pipe body and is positioned on the same side of the third locking component;
wherein, under the condition that the cover body is inserted into the pipe body, the connecting body is bent, and the third locking component is connected with the fourth locking component in a locking way.
In some of these embodiments, the cover comprises:
a sealing member provided on an outer wall of the lid body;
wherein, under the condition that the lid inserts the body, the sealing member is with the inner wall interference fit of body.
In some of these embodiments, the cover comprises:
a first fitting member provided on an outer wall of the lid body;
the body includes:
a second fitting member provided on an inner wall of the pipe body;
wherein the first fitting member is fitted and connected to the second fitting member when the lid body is inserted into the pipe body.
In some embodiments, the sealing membrane arranged on the annular surface of the outer end of the flow guide channel is an easily-torn sealing membrane; and/or
The sealing membrane arranged on the inner end ring surface of the flow guide channel is an easily torn sealing membrane or a sealing membrane which is not easy to tear.
In some of these embodiments, the sealing membrane comprises an aluminum foil membrane.
In some of these embodiments, one of the first and second fitting components is a groove and the other of the first and second fitting components is a male ring.
In some of these embodiments, the first locking member is a snap and the second locking member is a latch.
In some embodiments, the third locking member is a snap and the fourth locking member is a latch.
In some embodiments, the third locking member is a locking groove, and the fourth locking member is a locking block.
The utility model adopts the above technical scheme, compare with prior art, have following technological effect:
the utility model discloses a dropping device, at least one end of the dripper is provided with a sealing ring for sealing the film, and the dripper can be sealed by using the sealing film on the sealing ring, so that the sealing performance of a dripper bottle after pre-dispensing solution is good, and the solution in the dripper bottle is not easy to flow out; in the using process, the sealing film arranged on the sealing ring is removed or damaged, so that the sealing ring can be used, and the operation is simple and convenient; the dropping bottle is designed in an integrated manner, so that the production cost is reduced.
Drawings
Fig. 1 is a schematic view (one) of a dripper according to the present invention.
Fig. 2 is a schematic view (two) of the dripper according to the present invention.
Fig. 3 is a cross-sectional view (one) of the dripper according to the present invention.
Fig. 4 is a sectional view (two) of the dripper according to the present invention.
Fig. 5 is a sectional view (iii) of the dripper according to the present invention.
Fig. 6 is a sectional view (four) of the dripper according to the present invention.
Fig. 7 is a schematic view (one) of a dropping device according to the present invention.
Fig. 8 is a sectional view (one) of the dropping device according to the present invention.
Fig. 9 is a schematic view (two) of a dropping device according to the present invention.
Fig. 10 is a sectional view of the dropping device according to the present invention (ii).
Fig. 11 is a schematic view (three) of a dropping device according to the present invention.
Fig. 12 is a sectional view (iii) of the dropping device according to the present invention.
Fig. 13 is a schematic view (four) of a dropping device according to the present invention.
Fig. 14 is a sectional view (four) of the dropping device according to the present invention.
Wherein the reference numerals are: 100. a dripper; 101. a flow guide channel; 102. a seal ring;
200. a sealing film;
300. a cover body; 301. a first locking member; 302. a sealing member; 303. a first fitting member;
400. a pipe body; 401. a second locking member; 402. a second fitting member;
500. a linker; 501. a third locking member; 502. a fourth locking member.
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 of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be further described with reference to the accompanying drawings and specific embodiments, but the present invention is not limited thereto.
Example 1
An exemplary embodiment of the present invention, as shown in fig. 1-3, is a dropping device, including a dripper 100, the dripper 100 includes a guiding channel 101 and a sealing ring 102, the guiding channel 101 runs through the dripper 100, and the sealing ring 102 is disposed on the inner ring surface and/or the outer ring surface of the guiding channel 101.
Wherein, the minimum width of the sealing ring 102 is not less than 0.4mm, and the sealing ring is used for sealing films.
As shown in fig. 4 to 6, a sealing film 200 may be provided on the sealing ring 102.
Wherein the outer diameter of the sealing membrane 200 is larger than the inner diameter of the sealing ring 102.
As far as the sealing membrane 200 is concerned, it can be connected to the sealing ring 102 at any time, for example during production, during assembly. In some of these embodiments, the sealing film 200 is an aluminum foil film, a plastic film, or the like.
In some of these embodiments, the sealing membrane 200 is a tearable sealing membrane and/or a non-tearable sealing membrane.
Wherein the sealing membrane 200 can be removed by tearing or the sealing membrane 200 can be broken by puncturing.
In some of these embodiments, as shown in fig. 4, the sealing membrane 200 is only disposed on the sealing ring 102 at the outer end annulus of the flow guide channel 101, and in this case, the sealing membrane 200 is a tearable sealing membrane (e.g., an aluminum foil membrane with a tear).
In some embodiments, as shown in fig. 5, the sealing membrane 200 is only disposed on the sealing ring 102 at the inner end annular surface of the flow guide channel 101, and in this case, the sealing membrane 200 is an easily tearable sealing membrane (e.g., an aluminum foil membrane with a tear mark), and before use, the aluminum foil membrane is torn; alternatively, the sealing film 200 is a sealing film that is not easily torn, and the sealing film 200 may be pierced with an object having a sharp end (e.g., a sterilized needle, a cotton swab, or the like) before use.
In some embodiments, as shown in fig. 6, the sealing membrane 200 is disposed on the sealing ring 102 of the outer end annular surface and the sealing ring 102 of the inner end annular surface of the flow guide channel 101, in this case, the sealing membrane 200 disposed on the outer end annular surface is an easy-tearing sealing membrane, and the sealing membrane 200 disposed on the inner end annular surface is an easy-tearing sealing membrane or a non-easy-tearing sealing membrane.
The advantage of this embodiment lies in, sets up the sealing ring that is used for supplying to seal the membrane and uses at the inner anchor ring of the water conservancy diversion passageway of dripper and/or outer end anchor ring, can seal on this sealing ring and set up the seal membrane, when the user takes the dropper that has this dripper, need not carry out solution and divides the dress operation in advance, destroys the seal membrane and can carry out the dropping liquid operation, and is simple swift.
Example 2
The embodiment is an exemplary embodiment of the present invention, and a liquid dropping device, in addition to the dripper 100 described in embodiment 1, further includes a cover 300, a pipe 400, and a connector 500. The dripper 100 is disposed on the cover 300, the cover 300 and the pipe 400 are inserted and connected in an interference fit, and the connector 500 is connected to the cover 300 and the pipe 400 and integrally formed therewith.
Wherein the outer wall of the insertion type coupling finger cap 300 is in contact with the inner wall of the tube 400, that is, the cap 300 is inserted into the tube 400.
As shown in fig. 7 to 8, the dripper 100 is mounted on the cover 300, the central axis of the dripper 100 is coaxial with the central axis of the cover 300, and the flow guide channel 101 of the dripper 100 penetrates through the inner and outer spaces of the cover 300.
Wherein, the sealing film 200 is only arranged on the sealing ring 102 of the inner end ring surface of the flow guide channel 101.
The outer diameter of the outer wall of the cover body 300 is greater than the inner diameter of the inner wall of the tube body 400, so that the outer wall of the cover body 300 is in interference fit with the inner wall of the tube body 400.
The cover 300 includes a first locking part 301, a sealing part 302, and a first fitting part 303. Wherein, the first locking member 301 is provided on the outer wall of the cover 300, and is used for locking the cover 300 and the pipe 400 when the cover 300 and the pipe 400 are connected in an inserting manner; a sealing member 302 provided on the outer wall of the cover 300 and adapted to be in interference fit with the inner wall of the pipe 400 when the cover 300 is inserted into the pipe 400; the first fitting member 303 is provided on the outer wall of the cover 300, is located between the first locking member 301 and the sealing member 302, and is fitted to the inner wall of the pipe 400 when the cover 300 and the pipe 400 are inserted and connected.
First locking member 301 is a snap for engaging with the outer wall of tube 400 when lid 300 and tube 400 are connected by insertion.
The sealing member 302 is a convex ring having an outer diameter larger than an inner diameter of an inner wall of the pipe body 400, and is configured to press the inner wall of the pipe body 400 to interference fit the cover 300 with the pipe body 400 when the cover 300 is inserted into the pipe body 400.
The first fitting member 303 is a convex ring having an outer diameter larger than the inner diameter of the inner wall of the pipe body 400 but smaller than the outer diameter of the sealing member 302, and is adapted to be fitted to the inner wall of the pipe body 400 when the lid body 300 and the pipe body 400 are connected to each other in an insertion manner, thereby improving the sealing property between the lid body 300 and the pipe body 400.
The tube body 400 includes a second locking part 401 and a second fitting part 402. Wherein, the second locking member 401 is provided on the outer wall of the tube 400, and is used for locking connection with the first locking member 301 of the cover 300 when the cover 300 and the tube 400 are connected in an inserting manner; the second fitting member 402 is provided on the inner wall of the pipe body 400, and is fitted and connected to the first fitting member 303 of the cover body 300 when the cover body 300 and the pipe body 400 are inserted and connected.
The second locking member 401 is a latch, and engages with the first locking member 301, which is a latch, to improve the sealing firmness between the lid 300 and the tube 400.
The second fitting member 402 is a concave groove having an inner diameter equal to the outer diameter of the first fitting member 303, and is used for fitting and connecting with the first fitting member 303 of the lid 300 when the lid 300 and the pipe 400 are inserted and connected, so as to improve the sealing property between the lid 300 and the pipe 400.
The first end of the connector 500 is connected with the outer wall of the cover body 300, the second end of the connector 500 is connected with the outer wall of the tube body 400, and the cover body 300, the tube body 400 and the connector 500 are integrally injection-molded, so that the production cost is reduced.
Example 3
This embodiment is a modification of embodiment 2, and as shown in fig. 9 to 10, a dropping device includes a dropper 100, a sealing film 200, a cap 300, a tube 400, and a connector 500. The dripper 100 is disposed on the cover 300, the sealing film 200 is disposed on the inner end ring surface of the dripper 100, the cover 300 is inserted into the pipe 400 and is in interference fit with the pipe 400, and the connector 500 is connected to the cover 300 and the pipe 400 respectively and is integrally formed.
The structure and connection of the dripper 100, the sealing film 200, the cover 300 and the pipe 400 are substantially the same as those of embodiment 2, and are not described herein again.
The connector 500 includes a third locking member 501 and a fourth locking member 502. Wherein, the third locking member 501 is disposed at one side of the connecting body 500 and is disposed close to the cover 300; the fourth locking member 502 is disposed on one side of the connector 500 and on the same side of the third locking member 501, and is disposed close to the tube 400; when the cap 300 and the tube 400 are connected to each other in an insertion manner, the connector 500 is bent, the third locking member 501 moves upward along with the bending of the connector 500, and is positioned directly above the fourth locking member 502, and the third locking member 501 and the fourth locking member 502 are locked to each other, thereby locking the position of the connector 500.
The third locking member 501 is a snap, the fourth locking member 502 is a latch, and the third locking member 501 engages with the fourth locking member 502.
In this embodiment, the cover and the tube are engaged with each other, and the connector is engaged with each other, so that the sealing firmness between the cover and the tube is improved by the double engagement.
Example 4
This embodiment is a modification of embodiment 3, and as shown in fig. 11 to 12, a dropping device includes a dropper 100, a sealing film 200, a cap 300, a tube 400, and a connector 500. The dripper 100 is disposed on the cover 300, the sealing film 200 is disposed on the inner end ring surface of the dripper 100, the cover 300 is inserted into the pipe 400 and is in interference fit with the pipe 400, and the connector 500 is connected to the cover 300 and the pipe 400 respectively and is integrally formed.
The structure and connection of the dripper 100 and the sealing film 200 are substantially the same as those of embodiment 3, and are not described herein again.
The cover 300 includes a first locking part 301, a sealing part 302, and a first fitting part 303. Wherein, the first locking member 301 is provided on the outer wall of the cover 300, and is used for locking the cover 300 and the pipe 400 when the cover 300 and the pipe 400 are connected in an inserting manner; a sealing member 302 provided on the outer wall of the cover 300 and adapted to be in interference fit with the inner wall of the pipe 400 when the cover 300 is inserted into the pipe 400; the first fitting member 303 is provided on the outer wall of the cover 300, is located between the first locking member 301 and the sealing member 302, and is fitted to the inner wall of the pipe 400 when the cover 300 and the pipe 400 are inserted and connected.
The structure and connection relationship of the first locking member 301 and the sealing member 302 are substantially the same as those of embodiment 3, and are not described herein again.
First fitting member 303 is a concave groove having an outer diameter smaller than the inner diameter of the inner wall of tube 400, and is fitted to the inner wall of tube 400 when lid 300 and tube 400 are inserted and connected, thereby improving the sealing property between lid 300 and tube 400.
The tube body 400 includes a second locking part 401 and a second fitting part 402. Wherein, the second locking member 401 is provided on the outer wall of the tube 400, and is used for locking connection with the first locking member 301 of the cover 300 when the cover 300 and the tube 400 are connected in an inserting manner; the second fitting member 402 is provided on the inner wall of the pipe body 400, and is fitted and connected to the first fitting member 303 of the cover body 300 when the cover body 300 and the pipe body 400 are inserted and connected.
The structure and connection relationship of the second locking component 401 are substantially the same as those in embodiment 3, and are not described herein again.
The second fitting member 402 is a convex ring having an inner diameter equal to the outer diameter of the first fitting member 303, and is fitted to the first fitting member 303 of the lid 300 when the lid 300 and the pipe 400 are inserted into each other, so that the sealing performance between the lid 300 and the pipe 400 is improved.
The connector 500 includes a third locking member 501 and a fourth locking member 502. Wherein, the third locking member 501 is disposed at one side of the connecting body 500 and is disposed close to the cover 300; the fourth locking member 502 is disposed on one side of the connector 500 and on the same side of the third locking member 501, and is disposed close to the tube 400; when the cap 300 and the tube 400 are connected to each other in an insertion manner, the connector 500 is bent, the third locking member 501 moves upward along with the bending of the connector 500, and is positioned directly above the fourth locking member 502, and the third locking member 501 and the fourth locking member 502 are locked to each other, thereby locking the position of the connector 500.
The third locking member 501 is a card slot, the fourth locking member 502 is a card block, and the third locking member 501 and the fourth locking member 502 are engaged with each other.
The technical effect of this embodiment is substantially the same as that of embodiment 3, and is not described herein again.
Example 5
The embodiment is an exemplary embodiment of the present invention, and a liquid dropping device, in addition to the dripper 100 described in embodiment 1, further includes a cover 300, a pipe 400, and a connector 500. The dripper 100 is disposed on the cover 300, the cover 300 and the pipe 400 are inserted and connected in an interference fit, and the connector 500 is connected to the cover 300 and the pipe 400 and integrally formed therewith.
Wherein the outer wall of the insertion type coupling finger cap 300 is in contact with the inner wall of the tube 400, that is, the cap 300 is inserted into the tube 400.
As shown in fig. 13 to 14, the dripper 100 is mounted on the cover 300, the central axis of the dripper 100 is coaxial with the central axis of the cover 300, and the flow guide channel 101 of the dripper 100 penetrates through the inner and outer spaces of the cover 300.
The outer diameter of the outer wall of the cover body 300 is greater than the inner diameter of the inner wall of the tube body 400, so that the outer wall of the cover body 300 is in interference fit with the inner wall of the tube body 400.
The cover 300 includes a first locking member 301 and a sealing member 302. Wherein, the first locking member 301 is provided on the outer wall of the cover 300, and is used for locking the cover 300 and the pipe 400 when the cover 300 and the pipe 400 are connected in an inserting manner; the sealing member 302 is provided on the outer wall of the cover 300, and is used for interference fit with the inner wall of the pipe 400 when the cover 300 and the pipe 400 are inserted and connected.
First locking member 301 is a snap for engaging with the outer wall of tube 400 when lid 300 and tube 400 are connected by insertion.
The sealing member 302 is a convex ring having an outer diameter larger than an inner diameter of an inner wall of the pipe body 400, and is configured to press the inner wall of the pipe body 400 to interference fit the cover 300 with the pipe body 400 when the cover 300 is inserted into the pipe body 400.
The second locking member 401 is a latch, and engages with the first locking member 301, which is a latch, to improve the sealing firmness between the lid 300 and the tube 400.
The first end of the connector 500 is connected with the outer wall of the cover body 300, the second end of the connector 500 is connected with the outer wall of the tube body 400, and the cover body 300, the tube body 400 and the connector 500 are integrally injection-molded, so that the production cost is reduced.
The connector 500 includes a third locking member 501 and a fourth locking member 502. Wherein, the third locking member 501 is disposed at one side of the connecting body 500 and is disposed close to the cover 300; the fourth locking member 502 is disposed on one side of the connector 500 and on the same side of the third locking member 501, and is disposed close to the tube 400; when the cap 300 and the tube 400 are connected to each other in an insertion manner, the connector 500 is bent, the third locking member 501 moves upward along with the bending of the connector 500, and is positioned directly above the fourth locking member 502, and the third locking member 501 and the fourth locking member 502 are locked to each other, thereby locking the position of the connector 500.
The third locking member 501 is a card slot, the fourth locking member 502 is a card block, and the third locking member 501 and the fourth locking member 502 are engaged with each other.
The above description is only an example of the preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and those skilled in the art should be able to realize the equivalent alternatives and obvious variations of the present invention.
Claims (10)
1. A liquid dropping device is characterized by comprising a pipe body and a cover body which are connected, wherein a water dropper is arranged at the top of the cover body;
the dripper comprises:
the flow guide channel penetrates through the inner space and the outer space of the cover body;
the sealing ring is arranged on the inner end ring surface and/or the outer end ring surface of the flow guide channel, and the minimum width of the sealing ring is not less than 0.4mm and is used for sealing a film.
2. The dripping device as claimed in claim 1, characterized in that the tube is integrally formed with the cover, which is connected to the tube in an interposed manner.
3. The dripping device as claimed in claim 1, further comprising:
a sealing membrane sealing the sealing ring arrangement.
4. The dripping device as defined in claim 1, wherein the cover comprises:
a first locking member provided at an outer wall of the cover body;
the body includes:
a second locking part disposed at an outer wall of the pipe body;
wherein the first locking member is locked to the second locking member when the cap is inserted into the tube.
5. The dripping device as defined in claim 1, further comprising a connector body having a first end connected to the cover and a second end connected to the tube, wherein the tube, the connector body and the cover are integrally formed.
6. The dripping device as claimed in claim 5, characterized in that the connecting body comprises:
a third locking member disposed at one side of the connecting body and adjacent to the cover;
the fourth locking component is arranged on one side of the connecting body, is close to the pipe body and is positioned on the same side of the third locking component;
wherein, under the condition that the cover body is inserted into the pipe body, the connecting body is bent, and the third locking component is connected with the fourth locking component in a locking way.
7. The dripping device as defined in claim 1, wherein the cover comprises:
a sealing member provided on an outer wall of the lid body;
wherein, under the condition that the lid inserts the body, the sealing member is with the inner wall interference fit of body.
8. The dripping device as defined in claim 1, wherein the cover comprises:
a first fitting member provided on an outer wall of the lid body;
the body includes:
a second fitting member provided on an inner wall of the pipe body;
wherein the first fitting member is fitted and connected to the second fitting member when the lid body is inserted into the pipe body.
9. The dripping device according to claim 3, wherein the sealing membrane arranged on the outer end annular surface of the flow guide channel is an easily-torn sealing membrane; and/or
The sealing membrane arranged on the inner end ring surface of the flow guide channel is an easily torn sealing membrane or a sealing membrane which is not easy to tear.
10. A dropper device according to claim 3 wherein the sealing membrane comprises an aluminium foil membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022797558.0U CN213791706U (en) | 2020-11-27 | 2020-11-27 | Liquid dropping device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022797558.0U CN213791706U (en) | 2020-11-27 | 2020-11-27 | Liquid dropping device |
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| CN213791706U true CN213791706U (en) | 2021-07-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112354574A (en) * | 2020-11-27 | 2021-02-12 | 上海金标生物科技有限公司 | Liquid dropping device |
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2020
- 2020-11-27 CN CN202022797558.0U patent/CN213791706U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112354574A (en) * | 2020-11-27 | 2021-02-12 | 上海金标生物科技有限公司 | Liquid dropping device |
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