CN109946469B - Device for conveying liquid to disc center direction - Google Patents
Device for conveying liquid to disc center direction Download PDFInfo
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- CN109946469B CN109946469B CN201910289362.XA CN201910289362A CN109946469B CN 109946469 B CN109946469 B CN 109946469B CN 201910289362 A CN201910289362 A CN 201910289362A CN 109946469 B CN109946469 B CN 109946469B
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Abstract
The invention discloses a device for conveying liquid to the center direction of a disc, and relates to the technical field of detection equipment; the device comprises a first chamber (1), a second chamber (2), a first flow passage (3), a piston (4) and an elastic connecting piece (5), wherein the first chamber (1) is connected and communicated with the second chamber (2) through the first flow passage (3), the piston (4) is positioned in the second chamber (2) and is in sliding connection with the second chamber (2), and the elastic connecting piece (5) is connected between the second chamber (2) and the piston (4); the liquid to be detected is introduced into the second chamber from the first chamber through the first chamber, the second chamber, the first flow channel, the piston, the elastic connecting piece and the like, so that the efficiency is high and the effect is good.
Description
Technical Field
The invention relates to the technical field of detection equipment, in particular to a device for conveying liquid to the center direction of a disc.
Background
At present, in order to transfer liquid from the chamber A to the chamber B in the detection process, the rotation speed of a disc is generally increased, the liquid is centrifugally guided to a compression chamber, and the liquid entering the compression chamber compresses air in the compression chamber. The disc speed is then reduced and the compressed air forces the liquid entering the compression chamber into chamber B. The device and the method have the advantages of low realization efficiency and poor effect.
Rotation speed description of the rotation detection table:
the high rotation speed is >50Hz;
the medium rotating speed is 15 Hz-50 Hz;
the low rotation speed is <15Hz;
the unit Hz is circle/second.
When the expression "radial" is used, it means that the radial direction is relative to the axis of rotation about which the device or rotor can rotate. Thus, in the centrifugal field, the direction away from the rotation axis is defined as radially outward, and the direction toward the rotation axis is defined as radially inward. Similarly, the portion closer to the rotation axis is referred to as a radially inner portion, and the portion farther from the rotation axis is referred to as a radially outer portion.
Disclosure of Invention
The invention aims to solve the technical problem of providing a device for conveying liquid to the center direction of a disc, which is high in efficiency and good in effect by introducing liquid to be detected from a first chamber into a second chamber through the first chamber, the second chamber, a first runner, a piston, an elastic connecting piece and the like.
In order to solve the technical problems, the invention adopts the following technical scheme: the piston is positioned in the second chamber and is in sliding connection with the second chamber, and the elastic connecting piece is connected between the second chamber and the piston.
The further technical proposal is that: the elastic connecting piece, the piston and the first flow passage are sequentially distributed outwards along the radial direction of the rotating shaft.
The further technical proposal is that: the piston is connected with the sliding block through the first channel, and the connecting piece penetrates through the first channel to be connected between the piston and the sliding block.
The further technical proposal is that: the first channel, the connecting piece, the piston and the first flow channel are sequentially distributed outwards along the radial direction of the rotating shaft, and the elastic connecting piece is positioned on the other side of the connecting piece relative to the piston.
The further technical proposal is that: the second chamber is communicated with the outside through the second flow passage.
The further technical proposal is that: the second flow passage is a flow passage with a flow resistance greater than that of the first flow passage.
The beneficial effects of adopting above-mentioned technical scheme to produce lie in:
first, including first room, second room, first runner, piston and elastic connection spare, first room is connected the switch-on through first runner and second room, the piston is located the second room and with second room sliding connection, elastic connection spare is connected between second room and piston. According to the technical scheme, the liquid to be detected is introduced into the second chamber from the first chamber, so that the efficiency is high, and the effect is good.
And secondly, the elastic connecting piece, the piston and the first flow passage are sequentially distributed outwards along the radial direction of the rotating shaft. This technical scheme, the structure is more reasonable, and work efficiency is higher, and the effect is better.
And the sliding block is positioned in the third chamber, and the connecting piece passes through the first channel and is connected between the piston and the sliding block. This technical scheme, the structure is ingenious, and work efficiency is higher, and the effect is better.
Fourth, the first channel, the connecting piece, the piston and the first flow channel are sequentially distributed outwards along the radial direction of the rotating shaft, and the elastic connecting piece is positioned on the other side of the connecting piece relative to the piston. This technical scheme, the structure is more reasonable, and work efficiency is higher, and the effect is better.
Fifth, the second chamber is connected to the outside through the second flow passage. The technical scheme has better applicability.
Sixth, the second flow channel is a flow channel with a flow resistance greater than that of the first flow channel. This technical scheme, the structure is more reasonable, and work efficiency is higher, and the effect is better.
See the description of the detailed description section.
Drawings
FIG. 1 is a block diagram of embodiment 1 of the present invention;
FIG. 2 is a first state diagram of embodiment 1 of the present invention;
FIG. 3 is a second state diagram of embodiment 1 of the present invention;
FIG. 4 is a third state diagram of embodiment 1 of the present invention;
FIG. 5 is a block diagram of embodiment 2 of the present invention;
FIG. 6 is a first state diagram of embodiment 2 of the present invention;
fig. 7 is a second state diagram of embodiment 2 of the present invention.
Wherein: 1 first chamber, 2 second chamber, 3 first runner, 4 piston, 5 elastic connection, 6 second runner, 7 third chamber, 8 first passageway, 9 slider, 10 connecting piece.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present application is not limited to the specific embodiments disclosed below.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
In the description of the present application, it should be understood that, where azimuth terms such as "front, rear, upper, lower, left, right", "transverse, vertical, horizontal", and "top, bottom", etc., indicate azimuth or positional relationships generally based on those shown in the drawings, only for convenience of description and simplification of the description, these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present application; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In addition, the terms "first", "second", etc. are used to define the components, and are merely for convenience of distinguishing the corresponding components, and unless otherwise stated, the terms have no special meaning, and thus should not be construed as limiting the scope of the present application.
Example 1:
as shown in fig. 1-4, the invention discloses a device for conveying liquid to the center direction of a disc, which comprises a first chamber 1, a second chamber 2, a first flow channel 3, a piston 4, an elastic connecting piece 5 and a second flow channel 6, wherein the first chamber 1 is connected and communicated with the second chamber 2 through the first flow channel 3, the second chamber 2 is connected and communicated with the fourth chamber through the second flow channel 6, the piston 4 is positioned in the second chamber 2 and is in sliding connection with the second chamber 2, the elastic connecting piece 5 is connected between the second chamber 2 and the piston 4, and the elastic connecting piece 5, the piston 4 and the first flow channel 3 are sequentially distributed outwards along the radial direction of a rotating shaft.
Description of use:
when in use, the device is arranged on the rotary detection table.
As shown in fig. 2, in the first step, the liquid to be detected is located in the first chamber 1, the second chamber 2 is located closer to the rotation axis side than the first chamber 1, and the piston 4 is located on the radially inward side of the second chamber 2 along the rotation axis.
As shown in fig. 3, in the second step, in order to introduce the liquid to be detected from the first chamber 1 into the second chamber 2, the rotary detection stage is operated to rotate at a high speed. In the rotated state, the piston 4 itself generates a centrifugal force, and after overcoming the friction force of the piston 4 and the second chamber 2 and the tensile force of the elastic connection member 5, the piston 4 starts to slide outward in the radial direction of the rotation shaft, and the sliding piston 4 pushes the medium in the second chamber 2 to be slowly discharged from the second flow passage 6.
As shown in fig. 4, in the third step, the rotation detection table is operated to rotate at a low speed. The centrifugal force generated by the piston 4 itself is rapidly reduced and the elastic connection 5 pulls the piston 4 to slide back rapidly, so that a negative pressure is formed in the second chamber 2. Under the action of the negative pressure in the second chamber 2, the liquid to be detected is introduced from the first chamber 1 into the second chamber 2.
Inventive concept of example 1: the first chamber 1, the first flow channel 3 and the second chamber 2 which are sequentially connected and communicated, the piston 4 and the elastic connecting piece 5 which are positioned in the second chamber 2 are adopted, the piston 4 is in sliding connection with the second chamber 2, the piston 4 automatically slides outwards to discharge a medium in the second chamber 2 by utilizing the centrifugal force generated by the rotation of the piston 4, the rotating speed is rapidly reduced, the centrifugal force of the piston 4 is reduced, the piston 4 is rapidly pumped back, so that negative pressure is formed in the second chamber 2, the technical problem that liquid to be detected is introduced into the second chamber 2 from the first chamber 1 is solved, and the liquid to be detected is introduced into the second chamber 2 from the first chamber 1 under the action of the suction force formed by the piston 4.
The suction force formed by the piston 4 is large, so that the working efficiency is high and the effect is good. In the operation process, auxiliary equipment such as a pressing rod, a vacuum bag and the like are not needed, so that the operation is more convenient, the stability is better, and the cost is lower.
Example 2:
as shown in fig. 5 to 7, embodiment 2 is similar to embodiment 1, except that it further includes a third chamber 7, a first passage 8, a slider 9, and a connecting member 10, the second chamber 2 is connected to the third chamber 7 through the first passage 8, the slider 9 is located in the third chamber 7, and the connecting member 10 is connected between the piston 4 and the slider 9 through the first passage 8.
The first channel 8, the connecting piece 10, the piston 4 and the first flow channel 3 are sequentially distributed radially outwards along the rotation axis, and the elastic connecting piece 5 is positioned on the other side of the connecting piece 10 relative to the piston 4.
Description of use:
example 2 is similar to example 1, except that,
as shown in fig. 6, in the first step, the piston 4 is located in the middle of the second chamber 2 in a natural state.
As shown in fig. 7, in the second step, the rotation detection table is operated to rotate at a high speed. In the rotated state, the slider 9 itself generates a centrifugal force greater than the centrifugal force generated by the piston 4 itself and forms a resultant force, which overcomes the frictional force of the piston 4 with the second chamber 2 and the tensile force of the elastic connection member 5, and then the piston 4 rapidly slides inward in the radial direction of the rotation shaft, so that a negative pressure is formed in the second chamber 2. Under the action of the negative pressure in the second chamber 2, the liquid to be detected is introduced from the first chamber 1 into the second chamber 2.
Example 2 compared to example 1, the process of pushing the medium in the second chamber 2 to be slowly discharged from the second flow passage 6 was omitted. The working efficiency of example 2 is higher.
Next, the rotation detection table is operated to rotate at a low speed. In the same way, the centrifugal forces generated by the slider 9 and by the piston 4 itself are rapidly reduced, the elastic connection 5 pulling the piston 4 to slide rapidly back, so that a positive pressure is established in the second chamber 2. Under the effect of the positive pressure in the second chamber 2, the liquid to be detected is pushed from the second chamber 2 into the fourth chamber via the second flow channel 6. Compared with the prior art, the process of high-speed rotation again is omitted, and the working efficiency is further improved as a whole.
Inventive concept of example 2:
the method comprises the steps of sequentially connecting a first chamber 1, a first flow channel 3, a second chamber 2, a first channel 8 and a third chamber 7, a piston 4 and an elastic connecting piece 5 which are positioned in the second chamber 2, and a sliding block 9 which is positioned in the third chamber 7, wherein a connecting piece 10 is connected between the piston 4 and the sliding block 9 through the first channel 8, the piston 4 is in sliding connection with the second chamber 2, the change of control rotation speed is utilized to further control the piston 4 to rapidly slide back and forth in the second chamber 2, so that negative pressure and positive pressure are formed in the second chamber 2 in sequence, the technical problem that liquid to be detected is introduced into the second chamber 2 from the first chamber 1 and then is pushed into the fourth chamber 2 is solved, the liquid to be detected is introduced into the second chamber 2 from the first chamber 1 under the action of the negative pressure formed by the piston 4, and the liquid to be detected is pushed into the fourth chamber 2 from the second chamber 2 under the action of the positive pressure formed by the piston 4.
The suction force or the thrust force formed by the piston 4 is large, so that the working efficiency is high and the effect is good. In the operation process, the whole working efficiency is higher, the use is more convenient, the stability is better, and the cost is lower.
Example 3:
embodiment 3 is similar to embodiment 1 except that the second flow passage 6 is a flow passage having a flow resistance larger than that of the first flow passage 3.
The advantage is that during the formation of the negative pressure in the second chamber 2, the entry of external medium from the second flow channel 6 into the second chamber 2 is reduced, which is more advantageous for the formation of the negative pressure.
Example 4:
embodiment 4 is similar to embodiment 2 except that the second flow passage 6 is a flow passage having a flow resistance larger than that of the first flow passage 3.
The advantage is that during the formation of the negative pressure in the second chamber 2, the entry of external medium from the second flow channel 6 into the second chamber 2 is reduced, which is more advantageous for the formation of the negative pressure.
In the above embodiment, the elastic connection member 5 may be a spring or a rubber band.
In the above embodiment, the connector 10 may be a string or a wire rope.
Claims (6)
1. A device for delivering liquid in the direction of the center of a disc, comprising: including first room (1), second room (2), first runner (3), piston (4) and elastic connection spare (5), first room (1) are connected through first runner (3) and second room (2), piston (4) are located second room (2) and with second room (2) sliding connection, elastic connection spare (5) are connected between second room (2) and piston (4).
2. A device for delivering liquid in the center direction of a disc as claimed in claim 1, wherein: the elastic connecting piece (5), the piston (4) and the first flow passage (3) are sequentially distributed outwards along the radial direction of the rotating shaft.
3. A device for delivering liquid in the center direction of a disc as claimed in claim 1, wherein: the novel piston type hydraulic cylinder further comprises a third chamber (7), a first channel (8), a sliding block (9) and a connecting piece (10), wherein the second chamber (2) is connected and communicated with the third chamber (7) through the first channel (8), the sliding block (9) is located in the third chamber (7), and the connecting piece (10) penetrates through the first channel (8) and is connected between the piston (4) and the sliding block (9).
4. A device for delivering liquid in the center direction of a disc according to claim 3, wherein: the first channel (8), the connecting piece (10), the piston (4) and the first flow channel (3) are sequentially distributed outwards along the radial direction of the rotating shaft, and the elastic connecting piece (5) is positioned on the other side of the connecting piece (10) relative to the piston (4).
5. A device for delivering liquid to the center of a disc as claimed in any one of claims 1 to 4, wherein: the device also comprises a second flow passage (6), and the second chamber (2) is communicated with the outside through the second flow passage (6).
6. A device for delivering liquid to the center of a disc as defined in claim 5, wherein: the second flow passage (6) is a flow passage with a flow resistance larger than that of the first flow passage (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910289362.XA CN109946469B (en) | 2019-04-11 | 2019-04-11 | Device for conveying liquid to disc center direction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910289362.XA CN109946469B (en) | 2019-04-11 | 2019-04-11 | Device for conveying liquid to disc center direction |
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| CN109946469A CN109946469A (en) | 2019-06-28 |
| CN109946469B true CN109946469B (en) | 2024-03-26 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102012202775A1 (en) * | 2012-02-23 | 2013-08-29 | Hahn-Schickard-Gesellschaft für angewandte Forschung e.V. | FLUIDIKMODUL, DEVICE AND METHOD FOR PUMPING A LIQUID |
| DE102013203293A1 (en) * | 2013-02-27 | 2014-08-28 | Hahn-Schickard-Gesellschaft für angewandte Forschung e.V. | Fluidic device i.e. centrifugal disk, for e.g. automated bacteria-DNA-extraction from blood in laboratory, has outlet channels designed such that fluid is conducted via channel during expansion of compressed gas with expansion rate |
| DE102013215002B3 (en) * | 2013-07-31 | 2014-11-06 | Hahn-Schickard-Gesellschaft für angewandte Forschung e.V. | Apparatus and method for moving liquid in a centrifugal system using vacuum |
| CN210090479U (en) * | 2019-04-11 | 2020-02-18 | 石家庄禾柏生物技术股份有限公司 | Device for conveying liquid to center direction of disc |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013219929B4 (en) * | 2013-10-01 | 2015-07-30 | Albert-Ludwigs-Universität Freiburg | Fluidic module, apparatus and method for aliquoting a fluid |
| GB2554377A (en) * | 2016-09-23 | 2018-04-04 | Dnanudge Ltd | Method and apparatus for analysing a biological sample |
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2019
- 2019-04-11 CN CN201910289362.XA patent/CN109946469B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012202775A1 (en) * | 2012-02-23 | 2013-08-29 | Hahn-Schickard-Gesellschaft für angewandte Forschung e.V. | FLUIDIKMODUL, DEVICE AND METHOD FOR PUMPING A LIQUID |
| CN104169590A (en) * | 2012-02-23 | 2014-11-26 | 哈恩-席卡德应用研究学会 | Fluidics module, device and method for pumping a liquid |
| DE102013203293A1 (en) * | 2013-02-27 | 2014-08-28 | Hahn-Schickard-Gesellschaft für angewandte Forschung e.V. | Fluidic device i.e. centrifugal disk, for e.g. automated bacteria-DNA-extraction from blood in laboratory, has outlet channels designed such that fluid is conducted via channel during expansion of compressed gas with expansion rate |
| DE102013215002B3 (en) * | 2013-07-31 | 2014-11-06 | Hahn-Schickard-Gesellschaft für angewandte Forschung e.V. | Apparatus and method for moving liquid in a centrifugal system using vacuum |
| CN210090479U (en) * | 2019-04-11 | 2020-02-18 | 石家庄禾柏生物技术股份有限公司 | Device for conveying liquid to center direction of disc |
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