CN114320854A - Throwable electromagnetic peristaltic pump - Google Patents
Throwable electromagnetic peristaltic pump Download PDFInfo
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- CN114320854A CN114320854A CN202111567472.1A CN202111567472A CN114320854A CN 114320854 A CN114320854 A CN 114320854A CN 202111567472 A CN202111567472 A CN 202111567472A CN 114320854 A CN114320854 A CN 114320854A
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Abstract
The invention discloses a throwable electromagnetic peristaltic pump, which belongs to the field of micropumps and comprises a driving motor, a multi-stage annular magnet and a pump body, wherein a tray is arranged between the driving motor and the multi-stage annular magnet, a cover plate and an elastic film are arranged between the multi-stage annular magnet and the pump body, the cover plate is positioned above the elastic film, a plurality of magnet holes are formed in the cover plate, a cylindrical magnet is arranged on the inner side of the cover plate through the magnet holes, two guide pipes are arranged in the pump body, two bolt nuts are arranged at the bottom of the pump body, a D-shaped groove is formed in the center of the tray, and an end face is arranged on the outer side of the tray. The disposable electromagnetic peristaltic pump can drive the whole device to operate only by rotating the driving motor, has relatively low energy consumption, solves the problem that the traditional electromagnetic pump is limited by the electrifying frequency of an electromagnetic coil and has low frequency, and can finish the exchange of the inlet and the outlet of the pump by changing the rotating direction of the driving motor.
Description
Technical Field
The invention relates to the field of micropumps, in particular to a throwable electromagnetic peristaltic pump.
Background
Microfluidic systems have been shown to have the ability to monitor cell culture, lyse cells, separate protein/DNA, mix DNA/reagents, amplify DNA, etc. biological samples, and appropriate micropump and microvalve devices are important ways to control fluid delivery in the system;
electrohydrodynamic and magnetohydrodynamic micropumps have been developed, and micropumps based on reciprocating and non-periodic displacement of the membrane have also been widely explored. In these micropumps, deflection of the membrane causes a change in the volume of the chamber, driving the fluid flow. Peristaltic pumps can typically withstand high back pressures through such peristaltic movement. Existing membrane actuation methods include piezoelectric materials, electrostatic, thermopneumatic, electromagnetic and compressed air actuation. Among the above driving modes, compared with other driving modes, the electromagnetic driving has the advantages of low driving voltage, simple control, low manufacturing cost and the like;
however, the existing disposable electromagnetic peristaltic pump has certain defects to be improved when in use, most of the existing electromagnetic pumps are armature electromagnetic pumps, mechanical springs are adopted as restoring mechanisms, the springs are compressed when coils are excited, and the springs are reset when the coils are demagnetized. Mechanical springs have two main drawbacks, one of which is that they inevitably fail as the number of uses increases, and the other of which is that the energy consumption is large. The coil is excited to compress the spring, so that the pump has long service life and obvious energy consumption in many occasions, and the driving frequency of the electromagnetic pump depends on the on-off frequency of the electromagnetic coil, and the self-inductance coefficient of the multi-turn coil is large, so that the frequency is greatly limited.
Disclosure of Invention
The invention aims to provide a throwable electromagnetic peristaltic pump which can solve the existing problems.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides a can throw formula electromagnetism peristaltic pump, includes driving motor, multistage annular magnet and the pump body, install the tray between driving motor and the multistage annular magnet, install apron and elastic film between the multistage annular magnet and the pump body, the apron is located elastic film's top, a plurality of magnet holes have been seted up to the inside of apron, cylindrical magnet is installed through the magnet hole in the inboard of apron, the internally mounted of the pump body has two pipes, two bolt and nut are installed to the bottom of the pump body.
As a further technical scheme of the invention, a D-shaped groove is formed in the center of the tray, and an end face is arranged on the outer side of the tray.
As a further technical scheme of the invention, the lower end of the tray is inserted into a middle hole of the multistage annular magnet to be connected with the middle hole, and the upper part of the tray is connected with the driving motor through a D-shaped groove.
As a further technical scheme of the invention, the pump body is internally provided with a through hole A, the pump body is internally provided with a plurality of cylindrical cavities and annular grooves which are positioned on the outer side of the through hole A, the cover plate is internally provided with a through hole B, a bolt and a nut penetrate through the through hole A and the through hole B to be connected with the cover plate and the elastic film, the pump body is connected with the elastic film and the cover plate through the bolt and the nut, and the elastic film is positioned between the pump body and the cover plate.
As a further technical scheme of the invention, the plurality of cylindrical cavities are circularly arranged, the annular groove is communicated with the cylindrical cavities, and the guide pipe is the same as the annular groove.
As a further technical scheme of the invention, the guide pipe comprises an inlet pipe and an outlet pipe, the inlet pipe and the outlet pipe are both arranged in the pump body, and the inlet pipe is positioned on one side of the outlet pipe.
As a further technical scheme of the invention, the cylindrical magnet penetrates through the magnet hole, and the bottom of the cylindrical magnet is fixedly connected with the upper end of the elastic film.
In a further aspect of the present invention, the cylindrical magnet includes a magnet a, a magnet B, a magnet C, a magnet D, a magnet E, and a magnet F, the magnet a, the magnet B, the magnet C, the magnet D, the magnet E, and the magnet F are respectively installed in a plurality of magnet holes, and the plurality of magnet holes are arranged in a circular shape.
The invention has the beneficial effects that:
the pump body is separated from the driving part, so that the volume of the pump body can be small and is not limited by the driving part, meanwhile, the pump body is separated from the driving part, and the pump body can be thrown and the driving part can be recycled in the use occasions where some fluids can be polluted due to the separation of the pump body and the driving part, and the whole device can be driven to operate only by the rotation of the driving motor when the device is used, the energy consumption is relatively low, in addition, the working frequency of the pump depends on the frequency of the driving motor driving the multistage annular magnet to rotate, the problem that the traditional electromagnetic pump is limited by the electrifying frequency of the electromagnetic coil and has low frequency is solved, finally, because the electromagnetic pump is of a completely symmetrical structure, any one of two pipelines of the pump body can be connected with the inflow pipe, the other pipeline can be connected with the outflow pipe, namely the electromagnetic pump is bidirectional, and the exchange of the inlet and the outlet of the pump can be finished by changing the rotating direction of the driving motor.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic view of the overall structure of a disposable electromagnetic peristaltic pump of the present invention;
FIG. 2 is a disassembled view of a disposable electromagnetic peristaltic pump of the present invention;
FIG. 3 is a three-pole structure view of a multi-stage ring magnet of a disposable electromagnetic peristaltic pump of the present invention;
FIG. 4 is a block diagram of a pump body of a disposable electromagnetic peristaltic pump of the present invention;
FIG. 5 is a cutaway view of the pump body of a disposable electromagnetic peristaltic pump of the present invention;
FIG. 6 is a block diagram of a tray of a disposable electromagnetic peristaltic pump of the present invention;
FIG. 7 is a cutaway view of a tray of a disposable electromagnetic peristaltic pump of the present invention;
FIG. 8 is a block diagram of a cover plate of a disposable electromagnetic peristaltic pump of the present invention;
FIG. 9 is a diagram of a fluid intake process for a disposable electromagnetic peristaltic pump of the present invention;
FIG. 10 is a diagram of a fluid pumping process for a disposable electromagnetic peristaltic pump of the present invention;
fig. 11 is a flow chart of the operation of the cylindrical magnet of a disposable electromagnetic peristaltic pump of the present invention.
In the figure: 1. a drive motor; 2. a multi-stage ring magnet; 3. a pump body; 4. a tray; 5. a cylindrical magnet; 6. a cover plate; 7. an elastic film; 8. a conduit; 9. a bolt and a nut; 81. an inlet pipe; 82. a discharge pipe; 31. an annular groove; 32. a cylindrical cavity; 33. a through hole A; 41. a D-shaped groove; 42. an end face; 61. a magnet hole; 62. a through hole B; 51. a magnet A; 52. a magnet B; 53. a magnet C; 54. a magnet D; 55. a magnet E; 56. and a magnet F.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.
As shown in fig. 1-11, a throwable electromagnetic peristaltic pump comprises a driving motor 1, a multistage annular magnet 2 and a pump body 3, wherein a tray 4 is installed between the driving motor 1 and the multistage annular magnet 2, a cover plate 6 and an elastic film 7 are installed between the multistage annular magnet 2 and the pump body 3, the cover plate 6 is located above the elastic film 7, a plurality of magnet holes 61 are formed in the cover plate 6, a cylindrical magnet 5 is installed on the inner side of the cover plate 6 through the magnet holes 61, two guide pipes 8 are installed inside the pump body 3, and two bolt nuts 9 are installed at the bottom of the pump body 3.
The central position of tray 4 has seted up D type groove 41, and the outside of tray 4 is equipped with terminal surface 42.
The lower end of the tray 4 is inserted into the middle hole of the multistage annular magnet 2 and connected with the intermediate hole, and the upper part of the tray 4 is connected with the driving motor 1 through the D-shaped groove 41, so that the multistage annular magnet 2 can rotate along with the driving motor 1.
Through-hole A33 has been seted up to the inside of the pump body 3, a plurality of cylinder chambeies 32 and ring channel 31 have been seted up to the inside of the pump body 3 outside that is located through-hole A33, through-hole B62 has been seted up to the inside of apron 6, bolt and nut 9 passes through-hole A33 and through-hole B62 and is connected with apron 6 and elastic film 7, the pump body 3 is connected with elastic film 7 and apron 6 through bolt and nut 9, elastic film 7 is located the centre of the pump body 3 with apron 6.
The cylindrical cavities 32 are circularly arranged, the annular groove 31 is communicated with the cylindrical cavities 32, the guide pipe 8 is identical to the annular groove 31, the diameter of the cylindrical cavity 32 is larger than that of the cylindrical magnet 5 and the thickness of the elastic film 7 is twice, and therefore the cylindrical magnet 5 and the elastic film 7 can be pressed into the cylindrical cavities 32 together under the action of magnetic force.
The guide tube 8 comprises an inlet tube 81 and an outlet tube 82, the inlet tube 81 and the outlet tube 82 are both arranged in the pump body 3, the inlet tube 81 is positioned at one side of the outlet tube 82, and the inlet tube 81 and the outlet tube 82 can be mutually converted at one end of the pump body 3 along with the actual fluid flow direction.
The cylindrical magnet 5 passes through the magnet hole 61, and the bottom of the cylindrical magnet 5 is fixedly connected with the upper end of the elastic film 7.
The cylindrical magnet 5 comprises a magnet A51, a magnet B52, a magnet C53, a magnet D54, a magnet E55 and a magnet F56, wherein the magnet A51, the magnet B52, the magnet C53, the magnet D54, the magnet E55 and the magnet F56 are respectively installed in the magnet holes 61, the magnet holes 61 are circularly arranged, and the number of the cylindrical magnets 5 is equal to the number of the magnetic pole pairs of the multistage ring-shaped magnet 2 multiplied by two.
When the throwable electromagnetic peristaltic pump is used, all the cylindrical magnets 5 are arranged with N levels at the upper part and S levels at the lower part, the magnets are respectively numbered from the inflow pipe 81 to the magnet A51 to the magnet F56 counterclockwise from the top view, when the pump is in a non-working state and is not acted by magnetic force, all the cylindrical magnets 5 only droop under the action of gravity, the pump is not started, when the pump is acted by repulsive force of the multistage annular magnet 2, the magnet A51, the magnet C53 and the magnet E55 are firstly pressed down with the elastic film 7, the cavity volume is reduced, the magnet A51, the magnet C53 and the magnet E55 are attracted by the attractive force as the driving motor 1 drives the multistage annular magnet 2 to rotate, the cavity volume is increased to form negative pressure, fluid is sucked in, the magnet A51, the magnet C53 and the magnet E55 are pressed down by the repulsive force as the multistage magnets rotate, and the magnet B52, the magnet D54 and the magnet F56 are attracted by the attractive force, therefore, the fluid in the cavities corresponding to the magnets A51, C53 and E55 can enter the cavities corresponding to the magnets B52, D54 and F56, and the liquid pumping process is completed.
Referring to fig. 11, which shows a working flow of the electromagnetic peristaltic pump, fig. 8 shows a process of pumping a fluid into the cylindrical cavity 32 corresponding to the magnet a51 and a process of pumping a fluid from the cylindrical cavity 32 corresponding to the magnet a51 into the cavity corresponding to the magnet B52, and the remaining processes can be obtained in the same way, the fluid will flow from the inlet pipe 81 to the outlet pipe 82 like "peristaltic", and when the positions of the inlet pipe 81 and the outlet pipe 82 are changed, the working principle of the peristaltic pump is the same as above, except that the fluid flows from the inlet pipe 81 to the cylindrical cavity 32 corresponding to the magnet F56, sequentially passes through the remaining cavities, passes through the cylindrical cavity 32 corresponding to the magnet a51, and then flows out from the outlet pipe 82.
Through the arrangement of the driving motor 1, the multistage annular magnet 2, the pump body 3, the cylindrical magnet 5, the cover plate 6, the elastic film 7 and the guide pipe 8, the throwable pump body 3 with the cylindrical magnet 5, the multistage annular magnet 2 and the driving motor 1 are adopted, the cylindrical magnet 5 is arranged in the elastic film 7 in the inner cavity of the pump body 3, when the driving motor 1 drives the multistage annular magnet 2 to rotate and approach the pump body 3, the cylindrical magnet 5 moves up and down due to the action of magnetic force, so that the elastic film 7 is driven to vibrate to change the volume of the cavity, the suction and pumping of fluid are realized, the pump body 3 is separated from the driving part, the volume of the pump body 3 can be small and is not limited by the driving part, meanwhile, because the pump body 3 is separated from the driving part, under the use occasion that some fluids can be polluted, the pump body 3 can throw and the driving part can be recovered, in addition, the invention only needs the driving motor 1 to rotate to drive the whole device to operate when in use, the energy consumption is relatively low, in addition, the working frequency of the pump depends on the frequency that the driving motor 1 drives the multistage annular magnet 2 to rotate, the problem that the frequency is not high because the traditional electromagnetic pump is limited by the electrifying frequency of the electromagnetic coil is solved, finally, because the invention is a completely symmetrical structure, any one of two pipelines of the pump body 3 can be connected with the inflow pipe 81, and the other pipeline is connected with the outflow pipe 82, namely the electromagnetic pump is bidirectional, and the rotation direction of the driving motor 1 is changed, so that the exchange of the inlet and the outlet of the pump can be completed.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. A throwable electromagnetic peristaltic pump, characterized in that: including driving motor (1), multistage annular magnet (2) and the pump body (3), install tray (4) between driving motor (1) and multistage annular magnet (2), install apron (6) and elastic film (7) between multistage annular magnet (2) and the pump body (3), apron (6) are located the top of elastic film (7), a plurality of magnet holes (61) have been seted up to the inside of apron (6), cylinder magnet (5) are installed through magnet hole (61) to the inboard of apron (6), the internally mounted of the pump body (3) has two pipe (8), two bolt and nut (9) are installed to the bottom of the pump body (3).
2. A disposable electromagnetic peristaltic pump as set forth in claim 1, wherein: d type groove (41) have been seted up to the central point of tray (4), the outside of tray (4) is equipped with terminal surface (42).
3. A disposable electromagnetic peristaltic pump as set forth in claim 2, wherein: the lower end of the tray (4) is inserted into the middle hole of the multistage annular magnet (2) and connected with the middle hole, and the upper part of the tray (4) is connected with the driving motor (1) through a D-shaped groove (41).
4. A disposable electromagnetic peristaltic pump as set forth in claim 1, wherein: the pump is characterized in that a through hole A (33) is formed in the pump body (3), a plurality of cylindrical cavities (32) and annular grooves (31) are formed in the outer side, located in the through hole A (33), of the pump body (3), a through hole B (62) is formed in the cover plate (6), a bolt nut (9) penetrates through the through hole A (33) and the through hole B (62) to be connected with the cover plate (6) and an elastic film (7), the pump body (3) is connected with the elastic film (7) and the cover plate (6) through the bolt nut (9), and the elastic film (7) is located between the pump body (3) and the cover plate (6).
5. A disposable electromagnetic peristaltic pump as set forth in claim 4, wherein: the cylindrical cavities (32) are arranged in a circular shape, the annular groove (31) is communicated with the cylindrical cavities (32), and the guide pipe (8) is identical to the annular groove (31).
6. A disposable electromagnetic peristaltic pump as set forth in claim 1, wherein: the guide pipe (8) comprises an inlet pipe (81) and an outlet pipe (82), the inlet pipe (81) and the outlet pipe (82) are both installed in the pump body (3), and the inlet pipe (81) is located on one side of the outlet pipe (82).
7. A disposable electromagnetic peristaltic pump as set forth in claim 1, wherein: the cylindrical magnet (5) penetrates through the magnet hole (61), and the bottom of the cylindrical magnet (5) is fixedly connected with the upper end of the elastic film (7).
8. A disposable electromagnetic peristaltic pump as set forth in claim 1, wherein: the cylindrical magnet (5) comprises a magnet A (51), a magnet B (52), a magnet C (53), a magnet D (54), a magnet E (55) and a magnet F (56), wherein the magnet A (51), the magnet B (52), the magnet C (53), the magnet D (54), the magnet E (55) and the magnet F (56) are respectively arranged in a plurality of magnet holes (61), and the magnet holes (61) are circularly arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111567472.1A CN114320854B (en) | 2021-12-21 | 2021-12-21 | Throwable electromagnetic peristaltic pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111567472.1A CN114320854B (en) | 2021-12-21 | 2021-12-21 | Throwable electromagnetic peristaltic pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114320854A true CN114320854A (en) | 2022-04-12 |
| CN114320854B CN114320854B (en) | 2023-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111567472.1A Active CN114320854B (en) | 2021-12-21 | 2021-12-21 | Throwable electromagnetic peristaltic pump |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101749219A (en) * | 2008-12-11 | 2010-06-23 | 清华大学 | Miniature peristaltic pump |
| JP2014177893A (en) * | 2013-03-14 | 2014-09-25 | Aquatech Co Ltd | Electromagnetic rotating mechanism and tube pump with the same |
| CN203925955U (en) * | 2014-07-10 | 2014-11-05 | 大连海事大学 | A kind of electromagnetism Micropump based on micro-fluidic chip |
| CN106964007A (en) * | 2017-04-14 | 2017-07-21 | 福州大学 | The magnetic suspension nutating heart pump and its application method of a kind of electromagnetic drive |
| JP2019190335A (en) * | 2018-04-23 | 2019-10-31 | 住友ゴム工業株式会社 | Peristaltic pump |
| WO2021052865A1 (en) * | 2019-09-17 | 2021-03-25 | Institut Polytechnique De Grenoble | Pumping system in the lab-on-a-chip field |
| CN112915310A (en) * | 2021-01-26 | 2021-06-08 | 浙江清华柔性电子技术研究院 | In-vivo implantable peristaltic pump, peristaltic pump controller and body fluid transfer system |
-
2021
- 2021-12-21 CN CN202111567472.1A patent/CN114320854B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101749219A (en) * | 2008-12-11 | 2010-06-23 | 清华大学 | Miniature peristaltic pump |
| JP2014177893A (en) * | 2013-03-14 | 2014-09-25 | Aquatech Co Ltd | Electromagnetic rotating mechanism and tube pump with the same |
| CN203925955U (en) * | 2014-07-10 | 2014-11-05 | 大连海事大学 | A kind of electromagnetism Micropump based on micro-fluidic chip |
| CN106964007A (en) * | 2017-04-14 | 2017-07-21 | 福州大学 | The magnetic suspension nutating heart pump and its application method of a kind of electromagnetic drive |
| JP2019190335A (en) * | 2018-04-23 | 2019-10-31 | 住友ゴム工業株式会社 | Peristaltic pump |
| WO2021052865A1 (en) * | 2019-09-17 | 2021-03-25 | Institut Polytechnique De Grenoble | Pumping system in the lab-on-a-chip field |
| CN112915310A (en) * | 2021-01-26 | 2021-06-08 | 浙江清华柔性电子技术研究院 | In-vivo implantable peristaltic pump, peristaltic pump controller and body fluid transfer system |
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| Publication number | Publication date |
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| CN114320854B (en) | 2023-06-20 |
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