CN112254778A - Wireless remote water meter for measuring water - Google Patents
Wireless remote water meter for measuring water Download PDFInfo
- Publication number
- CN112254778A CN112254778A CN202010999465.8A CN202010999465A CN112254778A CN 112254778 A CN112254778 A CN 112254778A CN 202010999465 A CN202010999465 A CN 202010999465A CN 112254778 A CN112254778 A CN 112254778A
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- China
- Prior art keywords
- water
- steel shell
- ring
- wireless remote
- water inlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 124
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 48
- 239000010959 steel Substances 0.000 claims abstract description 48
- 238000009434 installation Methods 0.000 claims description 13
- 238000005259 measurement Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 5
- 238000004078 waterproofing Methods 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 241000425571 Trepanes Species 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/06—Indicating or recording devices
- G01F15/065—Indicating or recording devices with transmission devices, e.g. mechanical
- G01F15/066—Indicating or recording devices with transmission devices, e.g. mechanical involving magnetic transmission devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/001—Means for regulating or setting the meter for a predetermined quantity
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/14—Casings, e.g. of special material
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/18—Supports or connecting means for meters
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention discloses a wireless remote water meter for measuring water, which comprises a rotary impeller and a PCB structure; the rotary impeller is arranged inside the bottom end of the steel shell and is movably connected with the bottom end of the steel shell; the PCB structure is arranged on the top of the steel shell through a waterproof structure; the steel shell guides water flow to impact one side of the rotating impeller, and the rotating impeller rotates circumferentially; and a Hall sensor in the pcb structure senses the rotation of the magnet end of the rotary impeller. The invention provides a wireless remote water meter for metering water, which can effectively read the water metering effect of a plurality of remote water meters.
Description
Technical Field
The invention relates to the field of water meters, in particular to the field of wireless remote water meters for metering water.
Background
The water gauge is often used in daily life, especially between the water route pipeline, and general water gauge can only measure numerical value and show on the numerical value dish of water gauge, when needs read the water measurement like this, must arrive the position that the water gauge was installed and just can be read, this very big inconvenience of having brought because the pipeline tributary is many, does not have a branch like this and all must install the water gauge, this great increase read the time of measurement, increase cost.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides the wireless remote water meter for metering water, which can effectively read the water metering effect of a plurality of remote water meters.
The technical scheme is as follows: in order to achieve the purpose, the technical scheme of the invention is as follows:
a wireless remote water meter for measuring water comprises a rotary impeller and a PCB structure; the rotary impeller is arranged inside the bottom end of the steel shell and is movably connected with the bottom end of the steel shell; the PCB structure is arranged on the top of the steel shell through a waterproof structure; the steel shell guides water flow to impact one side of the rotating impeller, and the rotating impeller rotates circumferentially; a Hall sensor in the pcb structure senses the rotation of the magnet end of the rotary impeller; thereby measuring and calculating the water flow measurement.
Further, the steel shell is of a tubular structure with a closed bottom; a water inlet pipe and a water outlet pipe are respectively communicated with two sides of the steel shell; the water outlet end of the water inlet pipe and the water inlet end of the water outlet pipe are deviated from the center of the steel shell, and the water outlet end of the water inlet pipe and the water inlet end of the water outlet pipe are deviated towards the same side edge of the steel shell; the water outlet direction of the water inlet pipe and the water inlet direction of the water outlet pipe are in the same straight line, so that the rotary impeller is driven to rotate conveniently.
Furthermore, a plastic base is embedded at the bottom in the steel shell; a support shaft is fixedly arranged in the middle of the plastic base; an installation shaft is arranged at one end of the support shaft, which is far away from the plastic base; the rotating impeller is sleeved on the mounting shaft, so that resistance is reduced, and rotation of the rotating impeller is facilitated.
Further, the rotary impeller comprises an axle and fan blades; the fan blades are fixedly arranged at the bottom end of the wheel shaft in a surrounding manner to form an integral structure; the bottom end of the wheel shaft is provided with a sleeve hole; the rotating impeller is sleeved on the mounting shaft through a trepan boring and is movably connected with the mounting shaft; the fan blades rotate and periodically pass through a connecting line between the water outlet end of the water inlet pipe and the water inlet end of the water outlet pipe; the water flow impact is convenient to drive the fan blades to rotate, and the metering is better.
Furthermore, the top end of the wheel shaft is provided with a slotted hole; a rotary fan wheel is fixedly arranged in the slotted hole; a magnet ring is arranged at the notch of the slot hole, and the rotating fan wheel and the magnet ring are arranged at intervals and are of an integrated structure; the guide post extends upwards to the middle space of the magnet ring; the wheel shaft drives the rotating fan wheel, the guide pillar and the magnet ring to rotate circumferentially; therefore, when the magnet ring rotates, the magnetic field blade generated by the magnet ring also rotates, so that the Hall sensor can conveniently sense the magnetic field blade, and further the water outlet metering is measured and calculated.
Further, the waterproof structure comprises a waterproof board; a sleeve pipe is fixedly arranged at the bottom of the center of the waterproof plate; the waterproof plate is sleeved on the magnetic ring at the top end of the wheel shaft through a sleeve pipe; a water-proof ring is fixedly arranged at the bottom edge of the waterproof plate in the circumferential direction; steps are arranged in the steel shell in the circumferential direction; the waterproof plate is arranged on the upper pressing ring, and the waterproof plate is arranged on the lower portion of the waterproof plate; the side wall of the waterproof plate is attached to the inner wall of the top of the steel shell; a steel pressing plate is pressed on the edge of the surface of the waterproof plate in the circumferential direction; and protecting the PCB structure.
Further, the PCB board structure includes a chip carrier; the middle part of the bottom of the chip base is provided with an installation groove; the middle part of the surface of the waterproof plate is provided with a magnetic ring; the chip seat is embedded in the antimagnetic ring through the mounting groove, and the antimagnetic ring supports the chip seat; an installation supporting column is arranged in the installation groove; the Hall sensor is arranged on the mounting support column; the installation is convenient.
Furthermore, the top of the chip seat is arranged in an open manner, and the top of the chip seat is provided with a shielding cover through a support column; the transparent cover covers the chip seat; a second sealing ring is arranged between the side wall of the chip holder and the inner wall of the transparent cover; the outward extending edge of the side wall of the bottom of the transparent cover is connected with the outward extending edge of the top of the steel shell in a clamping mode through a clamping hoop.
Has the advantages that: the invention can accurately measure the flow of water flow in the water meter, can remotely transmit the measurement data and is convenient for reading the measurement of the water meter; including but not limited to the following benefits:
1) the Hall sensor is used for sensing the number of rotation turns of the magnet ring on the rotating impeller so as to measure and calculate the water flow passing between the rotating impellers, and then the metering data is remotely transmitted through the PCB structure, so that the reading is convenient;
2) be provided with waterproof construction between steel casing and PCB plate structure, can effectually prevent that rivers from overflowing to the PCB plate in the structure, cause the damage, stabilize whole water gauge structure together through the clamp simultaneously, be convenient for install the protection.
Drawings
FIG. 1 is a water meter configuration diagram;
FIG. 2 is a structural view of a steel shell;
FIG. 3 is a view of a rotary impeller structure;
FIG. 4 is a wheel axle construction view;
FIG. 5 is a semi-screenshot of a flashing;
fig. 6 is a diagram showing a structure of a PCB panel.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in figures 1-6: a wireless remote water meter for measuring water comprises a rotary impeller 1 and a PCB structure 2; the rotary impeller 1 is arranged inside the bottom end of the steel shell 3 and is movably connected with the bottom end; the PCB structure 2 is arranged at the top of the steel shell 3 through a waterproof structure 4; the steel shell 3 guides water flow to impact one side of the rotating impeller 1, and the rotating impeller 1 rotates circumferentially; and a Hall sensor in the pcb plate structure 2 induces the rotation of the magnet end of the rotary impeller 1. When water flow drives the rotary impeller 1 to rotate through the steel shell 3, the Hall sensor on the pcb plate structure 2 induces the number of turns of the magnet ring on the rotary impeller 1 rotating along with the rotary impeller 1, so that the water flow flowing through is measured and calculated, and then the Lorawan of the pcb plate structure 2 communicates with a server through a peripheral gateway to transmit metering data.
The steel shell 3 is of a tubular structure with a closed bottom; the two sides of the steel shell 3 are respectively communicated with a water inlet pipe 31 and a water outlet pipe 32; the water outlet end of the water inlet pipe 31 and the water inlet end of the water outlet pipe 32 are deviated from the center of the steel shell 3, and the water outlet end of the water inlet pipe 31 and the water inlet end of the water outlet pipe 32 are deviated towards the same side edge of the steel shell 3; the water outlet direction of the water inlet pipe 31 and the water inlet direction of the water outlet pipe 32 are in the same straight line. Design like this, when rivers flow through the steel casing, flow in from inlet tube 31 then flow out from outlet pipe 32, the central flow path of skew like this can the side direction impact rotatory impeller 1, and then drives rotatory impeller 1 rotatory, is convenient for measure discharge.
A plastic base 5 is embedded at the bottom in the steel shell 3; a support shaft 51 is fixedly arranged in the middle of the plastic base 5; a mounting shaft 52 is arranged at one end of the support shaft 51 far away from the plastic base 5; the rotating impeller 1 is sleeved on the mounting shaft 52. When the rotary impeller 1 is driven to rotate by water flow, the rotary impeller 1 rotates on the mounting shaft 52, so that the friction resistance is reduced, and the situation that the rotary impeller 1 cannot be driven to rotate when the water flow impact force is small is avoided, so that the water flow is not convenient to measure.
The rotary impeller 1 comprises a wheel shaft 11 and fan blades 12; the fan blades 12 are fixedly arranged at the bottom end of the wheel shaft 11 in a surrounding manner to form an integral structure; the bottom end of the wheel shaft 11 is provided with a sleeve hole 13; the rotating impeller 1 is sleeved on the mounting shaft 52 through the sleeve hole 13 and is movably connected with the mounting shaft; the fan blades 12 rotate periodically to pass through the connection line between the water outlet end of the water inlet pipe 31 and the water inlet end of the water outlet pipe 32. This impacts fan blade 12 laterally in one direction as the water flows through, which causes fan blade 12 to rotate hub 11 on mounting shaft 52, thereby metering the flow of water.
The top end of the wheel shaft 11 is provided with a slotted hole 111; a rotating fan wheel 112 is fixedly arranged in the slot hole 111; a magnet ring 113 is arranged at the notch of the slot 111, and the rotating impeller 112 and the magnet ring 113 are arranged at intervals and are of an integral structure; the guide post 114 extends upwards to the middle space of the magnet ring 113; the wheel shaft 11 drives the rotating fan wheel 112, the guide post 114 and the magnet ring 113 to rotate circumferentially. When the wheel shaft 11 rotates, the wheel shaft 11 can drive the rotating fan wheel 112 and the magnet ring 113 to rotate, a magnetic field is generated between the magnet ring 113 and the guide post 114, the position of the blade of the rotating fan wheel 112 in the magnetic field is blocked by magnetic induction lines, and a plurality of magnetic fields are formed; therefore, when the magnet ring 113 rotates, the magnetic fields are equivalent to the rotation of the plurality of magnetic fields, so that the Hall sensor can sense the number of rotating circles of the magnetic fields conveniently, and the measurement and calculation are convenient.
The waterproof structure 4 comprises a waterproof panel 41; a sleeve pipe 42 is fixedly arranged at the bottom of the center of the waterproof plate 41; the waterproof plate 41 is sleeved on the magnet ring 113 at the top end of the wheel shaft 11 through a sleeve joint pipe 42; a water-proof ring 43 is fixedly arranged at the bottom end edge of the waterproof plate 41 in the circumferential direction; a step 33 is annularly arranged inside the steel shell 3; the water-proof ring 43 corresponds to the step 33, an upper pressing ring 44 is arranged between the water-proof ring 43 and the step 33 to form a step, so that water flow is prevented from overflowing into the PCB structure 2, and a first sealing ring 45 is sleeved on the side wall of the water-proof ring 43 between the waterproof plate 41 and the upper pressing ring 44; the side wall of the waterproof plate 41 is attached to the inner wall of the top of the steel shell 3; a steel pressing plate 46 is arranged on the edge of the surface of the waterproof plate 41 in an annular pressing mode; the pressure is increased, and the water flow is prevented from seeping out. There is rivers to pass through in the water gauge lower half steel casing 3, and the water gauge upper half is PCB plate structure 2, so need carry out moisture isolation, carries out water proof to PCB plate structure 2.
The PCB board structure 2 comprises a chip holder 6; the middle part of the bottom of the chip seat 6 is provided with an installation groove 61; the middle part of the surface of the waterproof plate 41 is provided with a waterproof ring 47; the chip seat 6 is embedded in the magnetic-proof ring 47 through the installation groove 61, and the magnetic-proof ring 47 supports the chip seat 6; an installation supporting column 65 is arranged in the installation groove 61; the hall sensor is mounted on the mounting support post 65. When the wheel shaft 11 drives the magnet ring to rotate, the Hall sensor senses the number of turns of the rotation of the magnetic field formed by the magnet, and further the throughput of water flow between the fan blades 12 is measured; while the anti-magnetic ring 47 shields the interference of the magnetic field generated by the magnetic ring with the components in the PCB board structure 2.
The top of the chip seat 6 is arranged in an open manner, and the top of the chip seat 6 is provided with a shielding cover 62 through a support column, so that the influence of a magnetic field is prevented; the chip holder 6 is covered with a transparent cover 63, so that water flow metering on the water meter can be read conveniently; a second sealing ring 64 is arranged between the side wall of the chip holder 6 and the inner wall of the transparent cover 63; transparent cover 63 bottom lateral wall abduction edge is connected through clamp 7 chucking between 3 tops abduction edges of steel casing, enables like this that components such as chip carrier 6 and PCB plate structure 2 are more firm together, and hall sensor response measurement of being convenient for better is measured to water gauge structure as an organic whole.
The flux flowing through the steel shell in unit volume can rotate corresponding turns of the magnet ring in the meter body, and the PCB structure records and converts the flux flowing through the medium in the meter by sensing the number of the turns of the magnet ring through the Hall sensor; and then communicating with a server through a peripheral gateway through Lorawan in the PCB to transmit metering data.
The above description is of the preferred embodiment of the present invention and it will be apparent to those of ordinary skill in the art that several modifications and variations can be made without departing from the principles of the invention and these modifications and variations are also considered to be within the scope of the invention.
Claims (8)
1. The utility model provides a wireless teletransmission water gauge of measurement water which characterized in that: comprises a rotary impeller (1) and a PCB structure (2); the rotary impeller (1) is arranged inside the bottom end of the steel shell (3) and is movably connected with the bottom end of the steel shell; the PCB structure (2) is arranged at the top of the steel shell (3) through a waterproof structure (4); the steel shell (3) guides water flow to impact one side of the rotating impeller (1), and the rotating impeller (1) rotates in the circumferential direction; and a Hall sensor in the pcb plate structure (2) senses the rotation of the magnet end of the rotary impeller (1).
2. The wireless remote water meter for measuring water according to claim 1, wherein: the steel shell (3) is of a tubular structure with a closed bottom; a water inlet pipe (31) and a water outlet pipe (32) are respectively communicated with the two sides of the steel shell (3); the water outlet end of the water inlet pipe (31) and the water inlet end of the water outlet pipe (32) are deviated from the center of the steel shell (3), and the water outlet end of the water inlet pipe (31) and the water inlet end of the water outlet pipe (32) are deviated towards the same side edge of the steel shell (3); the water outlet direction of the water inlet pipe (31) and the water inlet direction of the water outlet pipe (32) are in the same straight line.
3. A wireless remote water meter according to claim 2, wherein: a plastic base (5) is embedded at the bottom in the steel shell (3); a support shaft (51) is fixedly arranged in the middle of the plastic base (5); a mounting shaft (52) is arranged at one end of the support shaft (51) far away from the plastic base (5); the rotating impeller (1) is sleeved on the mounting shaft (52).
4. The wireless remote water meter for measuring water according to claim 1, wherein: the rotary impeller (1) comprises an axle (11) and fan blades (12); the fan blades (12) are fixedly arranged at the bottom end of the wheel shaft (11) in a surrounding manner to form an integral structure; the bottom end of the wheel shaft (11) is provided with a sleeve hole (13); the rotary impeller (1) is sleeved on the mounting shaft (52) through a sleeve hole (13) and is movably connected with the mounting shaft; the fan blades (12) rotate and periodically pass through a connecting line of the water outlet end of the water inlet pipe (31) and the water inlet end of the water outlet pipe (32).
5. The wireless remote water meter according to claim 4, wherein: the top end of the wheel shaft (11) is provided with a slotted hole (111); a rotary fan wheel (112) is fixedly arranged in the slotted hole (111); a magnet ring (113) is arranged at the notch of the slotted hole (111), and the rotating fan wheel (112) and the magnet ring (113) are arranged at intervals; the top of the rotating fan wheel (112) is fixedly provided with a guide post (114) which is an integrated structure; the guide post (114) extends upwards to the middle space of the magnet ring (113); the wheel shaft (11) drives the rotating fan wheel (112), the guide post (114) and the magnet ring (113) to rotate in the circumferential direction.
6. The wireless remote water meter for measuring water according to claim 1, wherein: the waterproofing structure (4) comprises a waterproofing plate (41); a sleeve pipe (42) is fixedly arranged at the bottom of the center of the waterproof plate (41); the waterproof plate (41) is sleeved on the magnet ring (113) at the top end of the wheel shaft (11) through a sleeve pipe (42); a water-proof ring (43) is fixedly arranged at the bottom end edge of the waterproof plate (41) in the circumferential direction; steps (33) are arranged in the steel shell (3) in the circumferential direction; the water-proof ring (43) corresponds to the step (33), an upper pressing ring (44) is arranged between the water-proof ring (43) and the step (33), and a first sealing ring (45) is sleeved on the side wall of the water-proof plate (41) and the water-proof ring (43) between the upper pressing ring (44); the side wall of the waterproof plate (41) is attached to the inner wall of the top of the steel shell (3); and a steel pressing plate (46) is arranged on the surface edge of the waterproof plate (41) in an annular pressing mode.
7. The wireless remote water meter for measuring water according to claim 1, wherein: the PCB structure (2) comprises a chip seat (6); the middle part of the bottom of the chip seat (6) is provided with an installation groove (61); the middle part of the surface of the waterproof plate (41) is provided with a magnetic-proof ring (47); the chip seat (6) is embedded in the magnetic-proof ring (47) through the mounting groove (61), and the magnetic-proof ring (47) supports the chip seat (6); an installation supporting column (65) is arranged in the installation groove (61); the Hall sensor is installed on the installation supporting column (65).
8. The wireless remote water meter according to claim 7, wherein: the top of the chip seat (6) is arranged in an open mode, and the top of the chip seat (6) is provided with a shielding cover (62) through a supporting column; a transparent cover (63) covers the chip holder (6); a second sealing ring (64) is arranged between the side wall of the chip holder (6) and the inner wall of the transparent cover (63); the outward extending edge of the bottom side wall of the transparent cover (63) is tightly connected with the outward extending edge of the top of the steel shell (3) through a hoop (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010999465.8A CN112254778A (en) | 2020-09-22 | 2020-09-22 | Wireless remote water meter for measuring water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010999465.8A CN112254778A (en) | 2020-09-22 | 2020-09-22 | Wireless remote water meter for measuring water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112254778A true CN112254778A (en) | 2021-01-22 |
Family
ID=74232485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010999465.8A Pending CN112254778A (en) | 2020-09-22 | 2020-09-22 | Wireless remote water meter for measuring water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112254778A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06331402A (en) * | 1993-05-27 | 1994-12-02 | Osaka Kiko Co Ltd | Water meter |
| JP2013024770A (en) * | 2011-07-22 | 2013-02-04 | Toshin Corp | Tangential flow impeller type water meter |
| CN204228213U (en) * | 2014-12-10 | 2015-03-25 | 湖南常德牌水表制造有限公司 | A kind of novel high-frequency rate low-power consumption reversible Magnetic Sensor |
| CN205228572U (en) * | 2015-11-28 | 2016-05-11 | 怀化建南电子科技有限公司 | Seal structure of intelligence water gauge |
| JP2017116329A (en) * | 2015-12-22 | 2017-06-29 | 愛知時計電機株式会社 | Water meter, meter case and manufacturing method thereof |
| CN110274637A (en) * | 2019-08-07 | 2019-09-24 | 宁波市海曙强森仪表有限公司 | A kind of rotor water gauge |
| CN209910753U (en) * | 2019-05-10 | 2020-01-07 | 宁波水表股份有限公司 | Coaxial water meter |
| TWM590683U (en) * | 2019-07-15 | 2020-02-11 | 桓達科技股份有限公司 | Electronic type flow measuring device |
| CN111141351A (en) * | 2020-01-20 | 2020-05-12 | 福建上润精密仪器有限公司 | Drip metering high-precision Internet of things water meter machine and base meter thereof |
| CN210741585U (en) * | 2019-10-08 | 2020-06-12 | 宁波市海曙强森仪表有限公司 | Strong antimagnetic core |
-
2020
- 2020-09-22 CN CN202010999465.8A patent/CN112254778A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06331402A (en) * | 1993-05-27 | 1994-12-02 | Osaka Kiko Co Ltd | Water meter |
| JP2013024770A (en) * | 2011-07-22 | 2013-02-04 | Toshin Corp | Tangential flow impeller type water meter |
| CN204228213U (en) * | 2014-12-10 | 2015-03-25 | 湖南常德牌水表制造有限公司 | A kind of novel high-frequency rate low-power consumption reversible Magnetic Sensor |
| CN205228572U (en) * | 2015-11-28 | 2016-05-11 | 怀化建南电子科技有限公司 | Seal structure of intelligence water gauge |
| JP2017116329A (en) * | 2015-12-22 | 2017-06-29 | 愛知時計電機株式会社 | Water meter, meter case and manufacturing method thereof |
| CN209910753U (en) * | 2019-05-10 | 2020-01-07 | 宁波水表股份有限公司 | Coaxial water meter |
| TWM590683U (en) * | 2019-07-15 | 2020-02-11 | 桓達科技股份有限公司 | Electronic type flow measuring device |
| CN110274637A (en) * | 2019-08-07 | 2019-09-24 | 宁波市海曙强森仪表有限公司 | A kind of rotor water gauge |
| CN210741585U (en) * | 2019-10-08 | 2020-06-12 | 宁波市海曙强森仪表有限公司 | Strong antimagnetic core |
| CN111141351A (en) * | 2020-01-20 | 2020-05-12 | 福建上润精密仪器有限公司 | Drip metering high-precision Internet of things water meter machine and base meter thereof |
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| PB01 | Publication | ||
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Application publication date: 20210122 |