CN114320854B - Throwable electromagnetic peristaltic pump - Google Patents
Throwable electromagnetic peristaltic pump Download PDFInfo
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- CN114320854B CN114320854B CN202111567472.1A CN202111567472A CN114320854B CN 114320854 B CN114320854 B CN 114320854B CN 202111567472 A CN202111567472 A CN 202111567472A CN 114320854 B CN114320854 B CN 114320854B
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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 multistage ring magnet and a pump body, wherein a tray is arranged between the driving motor and the multistage ring magnet, a cover plate and an elastic film are arranged between the multistage ring 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 bolts and nuts are arranged at the bottom of the pump body, a D-shaped groove is formed in the center position 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 the 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 disposable electromagnetic peristaltic pump.
Background
Microfluidic systems have proven to be capable of cell culture monitoring, cell lysis, protein/DNA separation, DNA/reagent mixing, and DNA amplification of biological samples, while appropriate micropump and microvalve devices are important ways of controlling fluid transport in the system;
electro-hydrodynamic and magnetohydrodynamic micropumps have been developed and micropumps based on membrane reciprocation and non-periodic displacement have been widely explored. In these micropumps, deflection of the membrane changes the chamber volume, thereby driving fluid flow. With this peristaltic movement, peristaltic pumps can generally withstand higher back pressures. Existing membrane driving methods include piezoelectric materials, electrostatic, thermal pneumatic, electromagnetic and compressed air driving. Among the above driving methods, electromagnetic driving has advantages of low driving voltage, simple control, low manufacturing cost, etc., compared with other driving methods;
however, the conventional disposable electromagnetic peristaltic pump has certain defects to be improved when in use, and most of the conventional electromagnetic pumps are armature type electromagnetic pumps, a mechanical spring is adopted as a recovery mechanism, and the spring is compressed when the coil is excited and is reset when the coil is demagnetized. The mechanical spring brings about two main defects, namely, one is that the mechanical spring inevitably fails along with the increase of the using times, and the other is high in energy consumption. The coil compresses the spring when exciting, in many occasions, the live time of pump is longer, and the shortcoming of energy consumption is more showing, and thirdly, is difficult to realize high frequency, because the driving frequency of this kind of electromagnetic pump depends on electromagnetic coil's break-make electrical frequency, and the multiturn coil is from inductance great, and its frequency is consequently received great restriction.
Disclosure of Invention
The invention aims to provide a disposable electromagnetic peristaltic pump which can solve the existing problems.
The aim of the invention can be achieved by the following technical scheme:
the utility model provides a can throw formula electromagnetism peristaltic pump, includes driving motor, multistage ring magnet and the pump body, install the tray between driving motor and the multistage ring magnet, install apron and elastic membrane between multistage ring magnet and the pump body, the apron is located the top of elastic membrane, a plurality of magnet holes have been seted up to the inside of apron, cylindrical magnet is installed through the magnet hole to the inboard of apron, two pipes are installed to the internally mounted of the pump body, 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 the middle hole of the multistage ring magnet to be connected with the multistage ring magnet, and the upper part of the tray is connected with the driving motor through the D-shaped groove.
As a further technical scheme of the invention, a through hole A is formed in the pump body, a plurality of cylindrical cavities and annular grooves are formed in the pump body, the inner side of the through hole A is 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 in the middle of 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 identical to the annular groove.
As a further technical scheme of the invention, the guide pipe comprises a flow inlet pipe and a flow outlet pipe, wherein the flow inlet pipe and the flow outlet pipe are arranged in the pump body, and the flow inlet pipe is positioned at one side of the flow 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.
As a further technical scheme of the invention, the cylindrical magnet comprises a magnet a, a magnet B, a magnet C, a magnet D, a magnet E and a magnet F, wherein the magnet a, the magnet B, the magnet C, the magnet D, the magnet E and the magnet F are respectively arranged in a plurality of magnet holes, and the plurality of magnet holes are circularly arranged.
The invention has the beneficial effects that:
the invention adopts a throwable pump body with a cylindrical magnet, a multistage annular magnet and a driving motor, wherein the cylindrical magnet is arranged in the elastic film in the inner cavity of the pump body, when the driving motor drives the multistage annular magnet to rotate and approaches the pump body, the cylindrical magnet moves up and down due to the magnetic force action, so that the elastic film is driven to vibrate to change the volume of the cavity, thereby realizing the suction and pumping of fluid, the pump body and the driving part are separated, so that the volume of the pump body can be small and is not limited by the driving part, meanwhile, the pump body can be thrown and the driving part can be recovered under the use condition that some fluid can generate pollution.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic diagram 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 configuration diagram of a multistage ring magnet of a disposable electromagnetic peristaltic pump of the present invention;
FIG. 4 is a block diagram of the pump body of a disposable electromagnetic peristaltic pump of the present invention;
FIG. 5 is a schematic diagram 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 pictorial 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 fluid intake process diagram of a disposable electromagnetic peristaltic pump of the present invention;
FIG. 10 is a fluid pumping process diagram of a disposable electromagnetic peristaltic pump of the present invention;
fig. 11 is a flow chart of the operation of a cylindrical magnet of a disposable electromagnetic peristaltic pump of the present invention.
In the figure: 1. a driving motor; 2. a multistage 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. a flow inlet pipe; 82. a outflow 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
In order to further describe the technical means and effects adopted by the present invention for achieving the intended purpose, the following detailed description will refer to the specific implementation, structure, characteristics and effects according to the present invention with reference to the accompanying drawings and preferred embodiments.
As shown in fig. 1-11, a disposable electromagnetic peristaltic pump comprises a driving motor 1, a multistage ring magnet 2 and a pump body 3, wherein a tray 4 is arranged between the driving motor 1 and the multistage ring magnet 2, a cover plate 6 and an elastic film 7 are arranged between the multistage ring magnet 2 and the pump body 3, the cover plate 6 is positioned above the elastic film 7, a plurality of magnet holes 61 are formed in the cover plate 6, a cylindrical magnet 5 is arranged on the inner side of the cover plate 6 through the magnet holes 61, two guide pipes 8 are arranged in the pump body 3, and two bolts and nuts 9 are arranged at the bottom of the pump body 3.
A D-shaped groove 41 is formed in the center of the tray 4, and an end face 42 is formed on the outer side of the tray 4.
The lower end of the tray 4 is inserted into the middle hole of the multistage ring magnet 2 and connected with the same, 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 ring 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, and a plurality of cylinder chambeies 32 and ring channel 31 have been seted up to the inside of the pump body 3 that is located the outside of through hole A33, and through hole B62 has been seted up to the inside of apron 6, and bolt nut 9 passes through hole A33 and through hole B62 and apron 6 and elastic membrane 7 are connected, and the pump body 3 is connected with elastic membrane 7 and apron 6 through bolt nut 9, and elastic membrane 7 is located the centre of pump body 3 and apron 6.
The plurality of cylindrical cavities 32 are arranged circularly, the annular groove 31 is communicated with the cylindrical cavities 32, the guide pipe 8 is the same as the annular groove 31, and the diameter of the cylindrical cavities 32 is larger than the diameter of the cylindrical magnet 5 plus twice the thickness of the elastic film 7, so that 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 conduit 8 comprises an inflow pipe 81 and an outflow pipe 82, the inflow pipe 81 and the outflow pipe 82 are arranged in the pump body 3, the inflow pipe 81 is positioned on one side of the outflow pipe 82, and the inflow pipe 81 and the outflow pipe 82 are arranged at one end of the pump body 3 in a mutually convertible manner along with the actual fluid flowing.
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 includes 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 a plurality of magnet holes 61, the plurality of magnet holes 61 are arranged in a circular shape, and the number of the cylindrical magnets 5 is equal to the number of the pole pairs of the multistage ring magnet 2 multiplied by two.
When the disposable electromagnetic peristaltic pump is used, all cylindrical magnets 5 are arranged at the upper and lower stages, the magnets are respectively numbered the magnets A51-F56 from the inflow pipe 81 anticlockwise from the top view, when the pump is in a non-working state and is not acted by magnetic force, all cylindrical magnets 5 are only sagged under the action of gravity, the pump is not started, when the repulsive force of the multistage annular magnets 2 is acted, the magnets A51, C53 and E55 are firstly pressed down with the elastic film 7, the cavity volume is reduced, the multistage annular magnets 2 are driven to rotate by the driving motor 1, the magnets A51, C53 and E55 are attracted by the attractive force, the cavity volume is increased to form negative pressure, so that the fluid is sucked in, the magnets A51, C53 and E55 are pressed down by the repulsive force again along with the rotation of the multistage magnets, and the magnets B52, the magnets D54 and F56 are attracted by the repulsive force, so that the fluid in the corresponding cavities of the magnets A51, C53 and E55 can enter the corresponding cavities of the magnets B52, C54 and F56, and the pump process is completed.
As shown in fig. 11, a working flow of the electromagnetic peristaltic pump is completed, fig. 8 shows a process of pumping fluid into the cylindrical cavity 32 corresponding to the magnet a51, and a process of pumping fluid out of the cylindrical cavity 32 corresponding to the magnet a51 to the cylindrical cavity corresponding to the magnet B52, and the rest processes are the same, so that the fluid can flow from the inflow tube 81 to the outflow tube 82 like "peristaltic motion", when the positions of the inflow tube 81 and the outflow tube 82 are changed, the working principle of the peristaltic pump is the same as that described above, except that the flowing direction is from the inflow tube 81 to the cylindrical cavity 32 corresponding to the magnet F56, and then flows out from the outflow tube 82 after passing through the remaining cylindrical cavity 32 corresponding to the magnet a 51.
Through the driving motor 1, the multistage ring magnet 2, the pump body 3, the cylindrical magnet 5, the cover plate 6, the elastic film 7 and the guide pipe 8 which are arranged, the disposable pump body 3 with the cylindrical magnet 5, the multistage ring 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 ring magnet 2 to rotate and approaches the pump body 3, the cylindrical magnet 5 is caused to move up and down due to the action of magnetic force, so that the elastic film 7 is driven to vibrate, the cavity is enabled to change in volume, the suction and the pumping of fluid are realized, the pump body 3 and the driving part are separated, the self volume of the pump body 3 can be small and is not limited by the driving part, meanwhile, the pump body 3 can be thrown and the driving part can be recycled under the use condition that some fluid can pollute the environment, and when the driving motor 1 is used, the whole device can be driven to operate, the energy consumption is relatively low, the working frequency of the pump depends on the frequency of the driving motor 1 to drive the multistage ring magnet 2 to rotate, the electromagnetic coil is driven by the driving motor 1 to rotate, the electromagnetic tube is completely connected with the electromagnetic tube 82, and the two electromagnetic tube is completely connected with the electromagnetic tube 1, and the electromagnetic tube is completely connected with the electromagnetic tube is completely and the electromagnetic tube 1 with the inlet tube is completely and the electromagnetic tube.
The present invention is not limited to the above embodiments, but is capable of modification and variation in detail, and other modifications and variations can be made by those skilled in the art without departing from the scope of the present invention.
Claims (1)
1. A disposable electromagnetic peristaltic pump, characterized by: including driving motor (1), multistage ring magnet (2) and pump body (3), install tray (4) between driving motor (1) and the multistage ring magnet (2), install apron (6) and elastic membrane (7) between multistage ring magnet (2) and the pump body (3), apron (6) are located the top of elastic membrane (7), a plurality of magnet holes (61) have been seted up to the inside of apron (6), cylindrical magnet (5) are installed through magnet hole (61) in the inboard of apron (6), the internally mounted of pump body (3) has two pipes (8), two bolt and nut (9) are installed to the bottom of pump body (3), 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), the lower extreme of tray (4) inserts in the intermediate hole of multistage ring magnet (2) rather than linking to each other, and the top of tray (4) is passed through D type groove (41) and is continuous with driving motor (1), the inside of pump body (3) is seted up two pipe (8), the inside of pump body (3) is equipped with cylinder (33) and is located the inside of pump body (33) and is equipped with cylinder (33), the inside of apron (6) has seted up through-hole B (62), and bolt nut (9) pass through-hole A (33) and through-hole B (62) and apron (6) and elastic membrane (7) are connected, and pump body (3) are connected with elastic membrane (7) and apron (6) through bolt nut (9), and elastic membrane (7) are located the centre of pump body (3) and apron (6), a plurality of cylinder chamber (32) are circular arrangement, and ring channel (31) and cylinder chamber (32) through connection, pipe (8) are the same with ring channel (31), pipe (8) are including intake pipe (81) and outlet pipe (82), inflow pipe (81) and outflow pipe (82) are all installed in pump body (3), inflow pipe (81) is located one side of outflow pipe (82), magnet hole (61) is passed in cylindrical magnet (5), bottom and the upper end fixed connection of elastic membrane (7) of cylindrical magnet (5), cylindrical magnet (5) are including magnet A (51), magnet B (52), magnet C (53), magnet D (54), magnet E (55) and magnet F (56), magnet A (51), magnet B (52), magnet C (53), magnet, the magnets D (54), E (55) and F (56) are respectively installed in a plurality of magnet holes (61), and the plurality of 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 CN114320854A (en) | 2022-04-12 |
| CN114320854B true CN114320854B (en) | 2023-06-20 |
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Family Applications (1)
| 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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| Country | Link |
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| CN (1) | CN114320854B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101749219B (en) * | 2008-12-11 | 2012-06-20 | 清华大学 | Miniature peristaltic pump |
| JP5916231B2 (en) * | 2013-03-14 | 2016-05-11 | 株式会社アクアテック | Electromagnetic rotation mechanism and tube pump provided 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 |
| CN106964007B (en) * | 2017-04-14 | 2023-07-18 | 福州大学 | Electromagnetic driven magnetic suspension nutation heart pump and use method thereof |
| JP2019190335A (en) * | 2018-04-23 | 2019-10-31 | 住友ゴム工業株式会社 | Peristaltic pump |
| FR3100846B1 (en) * | 2019-09-17 | 2022-11-11 | Inst Polytechnique Grenoble | Pumping system in the field of labs on a chip |
| 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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2021
- 2021-12-21 CN CN202111567472.1A patent/CN114320854B/en active Active
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| CN114320854A (en) | 2022-04-12 |
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