CN114018352A - Impeller capable of limiting play range - Google Patents
Impeller capable of limiting play range Download PDFInfo
- Publication number
- CN114018352A CN114018352A CN202010771411.6A CN202010771411A CN114018352A CN 114018352 A CN114018352 A CN 114018352A CN 202010771411 A CN202010771411 A CN 202010771411A CN 114018352 A CN114018352 A CN 114018352A
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- impeller
- hole
- slider
- limiting
- elastic
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 10
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 5
- 238000010009 beating Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 230000009191 jumping Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Classifications
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- 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
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention discloses an impeller capable of limiting the range of play, which comprises: the impeller comprises an impeller body, wherein blades and a magnetic component are arranged on the impeller body; the impeller comprises an impeller body, wherein a first end of the impeller shaft is provided with a first elastic component, the first elastic component comprises a first telescopic part, the first telescopic part extends out of the first end of the impeller shaft and can elastically move relative to the first end of the impeller shaft, a second end of the impeller shaft is provided with a second elastic component, the second elastic component comprises a second telescopic part, and the second telescopic part extends out of the second end of the impeller shaft and can elastically move relative to the second end of the impeller shaft. The invention can improve the performance of the water meter.
Description
Technical Field
The invention relates to the technical field of water meter impellers, in particular to an impeller capable of limiting a play range.
Background
At present conventional water gauge impeller is fixed top basically, and the impeller must have certain drunkenness volume in measuring the sensor part under the normal condition, and the drunkenness takes place to demagnetize greatly easily, and the drunkenness undersize has the dead risk of impeller card, and the impeller is conventional mostly pom material (this material is the state of sinking in aqueous), under the condition of great flow, receives rivers impact impeller to be in the come-up state, and the magnet steel face of impeller and counter central gear's magnet steel face distance is nearest this moment. Under the condition of small flow, the impeller is in a sinking state, and the distance between the magnetic steel surface of the impeller and the magnetic steel surface of the central gear of the counter is farthest.
The impeller has larger play clearance, so that the impeller in a sinking and floating state causes the distance between the magnetic steel surface of the impeller and the magnetic steel surface of the central gear of the counter to be changed under the impact of incomplete perpendicularity of the impeller shaft and different flow rates, the performance of the water meter is greatly influenced, and the possibility that the magnetic steel is completely coupled under larger flow rate but the magnetic steel distance is increased under small flow rate to demagnetize or stop rotating can be caused.
Disclosure of Invention
The invention provides an impeller capable of limiting the movement range so as to improve the performance of a water meter.
In order to solve the above technical problem, the present invention provides an impeller capable of limiting a play range, including:
the impeller comprises an impeller body, wherein blades and a magnetic component are arranged on the impeller body;
the impeller comprises an impeller body, wherein a first end of the impeller shaft is provided with a first elastic component, the first elastic component comprises a first telescopic part, the first telescopic part extends out of the first end of the impeller shaft and can elastically move relative to the first end of the impeller shaft, a second end of the impeller shaft is provided with a second elastic component, the second elastic component comprises a second telescopic part, and the second telescopic part extends out of the second end of the impeller shaft and can elastically move relative to the second end of the impeller shaft.
Preferably, in the above technical solution, a first end of the impeller shaft is provided with a first accommodating hole, a second end of the impeller shaft is provided with a second accommodating hole, the first elastic component is disposed in the first accommodating hole, the first telescopic member extends out of the first accommodating hole, the second elastic component is disposed in the second accommodating hole, and the second telescopic member extends out of the second accommodating hole.
Preferably, as for the above technical solution, a first end of the impeller shaft is provided with a first limiting structure so that the first telescopic member can be positioned opposite to the first accommodating hole in the extended state, and a second end of the impeller shaft is provided with a second limiting structure so that the second telescopic member can be positioned opposite to the second accommodating hole in the extended state.
Preferably, in the above aspect, the first and second extensible members are spherical bodies.
Preferably, in the above technical solution, the first elastic assembly further comprises a first elastic member, the first elastic member is a first ball, the first containing hole has a bore diameter larger than the diameter of the first ball so that the first ball can enter the first containing hole, the aperture of the opening of the first containing hole is smaller than the diameter of the first ball body to form a first limiting structure, the first elastic component is arranged in the first accommodating hole and is elastically connected with the first telescopic component, the second elastic component also comprises a second elastic part which is a second sphere, the aperture of the second containing hole is larger than the diameter of the second ball so that the second ball can enter the second containing hole, the aperture of the opening of the second containing hole is smaller than the diameter of the second ball body so as to form a second limiting structure.
Preferably, in the above technical solution, the first elastic assembly further includes a first slider movably disposed in the first accommodating hole, a first end of the first slider is connected to the first telescopic member, a second end of the first slider is connected to the first elastic member, the second elastic assembly further includes a second slider movably disposed in the second accommodating hole, a first end of the second slider is connected to the second telescopic member, and a second end of the second slider is connected to the second elastic member.
As a preferred aspect of the above technical solution, a first tapered hole is disposed at an opening of the second accommodating hole, a second tapered hole is disposed at an opening of the second accommodating hole, the first slider and the second slider are tapered components, the first slider is matched with the first tapered hole so that the first slider can be positioned in the first accommodating hole, and the second slider is matched with the second tapered hole so that the second slider can be positioned in the second accommodating hole.
Preferably, the impeller body is provided with a weight port.
Preferably, in the above aspect, the impeller shaft is an integrally formed long shaft.
Preferably, in the above technical solution, the magnetic member is a ring body, an upper end surface of the ring body is a magnetic surface, and the impeller shaft and the magnetic member are concentrically arranged.
The invention provides an impeller capable of limiting the range of play, wherein a first elastic component and a second elastic component are respectively arranged at two ends of an impeller shaft, the impeller floats upwards integrally under the impact of large flow, because a first telescopic component of the first elastic component can elastically stretch, the distance between a magnetic component and a magnetic surface of a central gear of a conventional impeller distance counter is larger, the first elastic component can limit the upwards floating play at large flow, under the condition that a small-flow impeller sinks, a second telescopic component of the second elastic component can elastically stretch, under the action of the second telescopic component, the distance between the magnetic component and the magnetic component of the central gear of the conventional impeller distance counter is smaller, the downwards play at a sinking state can be limited, and the axial play can be reduced, the overall performance of the water meter can be improved.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
FIG. 1 is a schematic perspective view of an impeller according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of an impeller in an embodiment of the present invention;
FIG. 3 is an enlarged view of a portion a of FIG. 2;
fig. 4 is an enlarged schematic view of b in fig. 2.
Description of reference numerals: 1. a first elastic member; 2. a blade; 3. a magnetic member; 4. a magnetic surface; 5. an impeller body; 6. a weight port; 7. an impeller shaft; 8. a second elastic member; 11. a first telescopic member; 12. a first slider; 13. a first elastic member; 71. a first housing hole; 72. a second housing hole; 81. a second telescoping member; 82. a second slider; 83. a second elastic member.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 3, an embodiment of the present invention provides an impeller capable of limiting a play range, including:
the impeller comprises an impeller body 5, wherein blades 2 and a magnetic component 3 are arranged on the impeller body 5;
In this embodiment, the first elastic assembly 1 and the second elastic assembly 8 are respectively disposed at two ends of the impeller shaft 7, the impeller integrally floats up under the impact of a large flow, because the first telescopic member 11 of the first elastic assembly 1 can elastically expand and contract, when the impeller floats up, the impeller contacts with a member located above to generate a downward elastic acting force, and can limit the upward movement of the impeller under the elastic acting force, so that the distance between the magnetic member and a central gear of a conventional impeller distance counter is larger, the first elastic assembly can limit the upward movement at the large flow, when the impeller sinks at a small flow, the second telescopic member 81 of the second elastic assembly 8 can elastically expand and contract, when the impeller sinks, the second telescopic member 81 and other members located below generate an upward elastic acting force, and when the impeller sinks, the impeller can limit the downward movement, under the action of the second telescopic part 81, the distance between the magnetic part and the central gear of the counter is smaller than that of the conventional impeller, and the downward movement in a sinking state can be limited, so that the axial movement of the impeller can be reduced, and the overall performance of the water meter is improved
In a further alternative embodiment of this embodiment, the first end of the impeller shaft 7 is provided with a first receiving hole 71, the second end of the impeller shaft 7 is provided with a second receiving hole 72, the first elastic member 1 is disposed in the first receiving hole 71, the first telescopic member 11 extends out of the first receiving hole 71, the second elastic member 8 is disposed in the second receiving hole 72, and the second telescopic member 81 extends out of the second receiving hole 72.
In this embodiment, the first elastic component 1 and the second elastic component 8 are respectively disposed in the first accommodating hole 71 and the second accommodating hole 72, which can protect the first elastic component 1 and the second elastic component 8, and prevent the first elastic component 1 and the second elastic component 8 from colliding during the shifting process, in addition, the structure can be made more compact, the assembly space is saved, in addition, the first elastic component 1 and the second elastic component 8 can be disposed near the center of the impeller shaft 7, the specific gravity of the whole impeller can be balanced, and the increase of the impeller jumping caused by the weight of the first elastic component 1 and the second elastic component 8 can be prevented.
In this embodiment, the first accommodating hole 71 and the second accommodating hole 72 are disposed along the length direction of the impeller shaft 7, the first accommodating hole 71 and the second accommodating hole 72 are circular holes, the impeller shaft 7 is a circular shaft, the centers of the first accommodating hole 71 and the second accommodating hole 72 are located on the same axis and are disposed coaxially with the impeller shaft 7, the first accommodating hole 71 and the second accommodating hole 72 are disposed along the length direction and are disposed coaxially with the impeller shaft 7, so that the influence of the opening on the specific gravity of the impeller can be reduced, the increase of the runout caused by the opening can be reduced, and in addition, the first elastic component 1 and the second elastic component 8 are disposed along the length direction of the first accommodating hole 71 and the second accommodating hole 72, respectively, and the runout can also be reduced.
In a further alternative embodiment of this embodiment, the first end of the impeller shaft 7 is provided with a first stop structure to enable the first telescopic member 11 to be positioned opposite the first receiving hole 71 in the extended state, and the second end of the impeller shaft 7 is provided with a second stop structure to enable the second telescopic member 81 to be positioned opposite the second receiving hole 72 in the extended state.
The first limiting mechanism in this embodiment mainly prevents the first telescopic member 11 from being separated from the first accommodating hole 71 when elastically extending, and the second limiting mechanism prevents the second telescopic member 81 from being separated from the second accommodating hole 72 when extending, which makes the operation of the first elastic assembly 1 and the second elastic assembly 8 more stable.
In a further embodiment of this embodiment, the first and second telescopic members 11, 81 are spheres.
First extensible member 11 and second extensible member 81 in this embodiment adopt the spheroid can make first extensible member 11 and second extensible member 81 reduce area of contact when the drunkenness contacts, and the stress point can be more accurate when the contact, and the direction of its elastic force can be controlled, can promote the effect of restriction drunkenness.
In a further implementation manner of the embodiment, the first elastic assembly 1 further includes a first elastic component 13, the first telescopic component 11 is a first sphere, a diameter of the first accommodating hole 71 is larger than a diameter of the first sphere so that the first sphere can enter the first accommodating hole 71, a diameter of an opening of the first accommodating hole 71 is smaller than the diameter of the first sphere so as to form a first limiting structure, the first elastic component 13 is disposed in the first accommodating hole 71 and elastically connected to the first telescopic component 11, the second elastic component 8 further includes a second elastic component 83, the second telescopic component 81 is a second sphere, a diameter of the second accommodating hole 72 is larger than the diameter of the second sphere so that the second sphere can enter the second accommodating hole 72, and a diameter of the opening of the second accommodating hole 72 is smaller than the diameter of the second sphere so as to form a second limiting structure.
In this embodiment, the aperture of the opening of the first containing hole 71 is smaller than the diameter of the first ball, so that the first ball is clamped at the opening of the first containing hole 71 under the elastic action, part of the structure of the first ball protrudes out of the opening of the first containing hole 71, and the aperture of the opening of the second containing hole 72 is smaller than the diameter of the second ball, so that the second ball is clamped at the opening of the second containing hole 72 under the elastic action, and part of the structure of the second ball protrudes out of the opening of the second containing hole 72, in this embodiment, the aperture of the opening of the first containing hole 71 is set to form a first limiting structure for limiting the first telescopic part 11, and the aperture of the opening of the second containing hole 72 is set to form a second limiting structure for limiting the second telescopic part 81, which does not need to add an additional structure for limiting, which not only can save the installation and processing costs, but also, the added structure may damage the overall specific gravity of the impeller to increase the bounce, and the increase of beating then can strengthen the drunkenness and perhaps even lead to the impeller card to die, and this embodiment adopts above-mentioned limit structure then can reduce to beat, also can effectively prevent to lead to the impeller card to die because the increase of beating.
In this embodiment, the first elastic member 13 and the second elastic member 83 are straight springs, the first ball and the second ball are stainless steel balls, the first ball adopts the stainless steel balls to reduce the friction when the first ball contacts with the opening of the first accommodating hole 71, the second ball adopts the stainless steel balls to reduce the friction when the second ball contacts with the opening of the second accommodating hole 72, and the first elastic member 13 and the second elastic member 83 adopt the straight springs to respectively cooperate with the first accommodating hole 71 and the second accommodating hole 72 to facilitate installation and save energy.
In a further practical implementation manner of this embodiment, the first elastic assembly 1 further includes a first sliding block 12, the first sliding block 12 is movably disposed in the first accommodating hole 71, a first end of the first sliding block 12 is connected to the first telescopic member 11, a second end of the first sliding block 12 is connected to the first elastic member 13, the second elastic assembly 8 further includes a second sliding block 82, the second sliding block 82 is movably disposed in the second accommodating hole 72, a first end of the second sliding block 82 is connected to the second telescopic member 81, and a second end of the second sliding block 82 is connected to the second elastic member 83.
The first sliding block 12 in this embodiment can move in the first containing hole 71 along the length direction thereof, and the second sliding block 82 can move in the second containing hole 72 along the length direction thereof, because the first telescopic member 11 and the second telescopic member 81 are spheres, if the telescopic members are directly connected with the elastic member, the contact surface is small, the operation is unstable, and the sliding blocks can increase the contact area of the telescopic members with the elastic member, so that the operation is more stable.
In a further implementation manner of the present embodiment, a first tapered hole is provided at the opening of the second containing hole 72, a second tapered hole is provided at the opening of the second containing hole 72, the first slider 12 and the second slider 82 are tapered components, the first slider 12 cooperates with the first tapered hole to enable the first slider 12 to be positioned in the first containing hole 71, and the second slider 82 cooperates with the second tapered hole to enable the second slider 82 to be positioned in the second containing hole.
The shape of first bell mouth in this embodiment corresponds with the shape of first slider 12, and second slider 82 corresponds with the shape in second bell mouth, and first slider 12 and second slider 82 also are the toper part, and the slider can effectively control the scope that the slider is beated about during operation with the bell mouth cooperation, can improve the stability of elastic component work, also can further reduce simultaneously because the slider beats and lead to the beating of impeller.
In a further embodiment of the present embodiment, the impeller body 5 is provided with a weight port 6.
In this embodiment, the counterweight can be compared through the counterweight port 6 according to different performance grade requirements, materials with different densities are added into the counterweight port 6, and the vertical movement range of the impeller can be adjusted without changing the elastic coefficient of the elastic component.
In addition, the weight ports 6 in this embodiment are through holes distributed on the impeller body 5 in an annular array.
In a further embodiment of this embodiment, the impeller shaft 7 is an integrally formed long shaft.
In this embodiment, the impeller shaft 7 is an integrally formed long shaft, so that the concentricity of the parts after assembly is better controlled, and the performance of the water meter can be further improved.
In a further embodiment of this embodiment, the magnetic part 3 is a ring, the upper end surface of the ring is the magnetic surface 4, and the impeller shaft 7 is concentrically arranged with the magnetic part 3.
The magnetic surface 4 is used for being matched with a sensor for use, such as a counter and the like, and is used for obtaining the number of turns of the rotation of the impeller, and the impeller shaft 7 and the magnetic part 3 are concentrically arranged, so that the jumping of the impeller can be reduced, and the performance of the water meter can be further improved.
When this embodiment work, under the impeller of water gauge is in large-traffic condition, the impeller can be in the come-up state, and magnetic surface 4 can come up relatively, and magnetic surface 4 of impeller is nearest with the sun gear magnetic surface distance in the counter, and the elastic compression of first elastomeric element 13 back can react to the impeller for magnetic surface 4 has a certain degree downwards than conventional impeller. When the flow is small, the impeller can sink, the distance of the magnetic surface is pulled, the second elastic component can support the impeller, and the magnetic surface is closer to the magnetic surface of the counter compared with the magnetic surface of a conventional impeller in the state.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. An impeller capable of limiting the range of play, comprising:
the impeller comprises an impeller body, wherein blades and a magnetic component are arranged on the impeller body;
the impeller comprises an impeller body, wherein a first end of the impeller shaft is provided with a first elastic component, the first elastic component comprises a first telescopic part, the first telescopic part extends out of the first end of the impeller shaft and can elastically move relative to the first end of the impeller shaft, a second end of the impeller shaft is provided with a second elastic component, the second elastic component comprises a second telescopic part, and the second telescopic part extends out of the second end of the impeller shaft and can elastically move relative to the second end of the impeller shaft.
2. The impeller capable of limiting the range of play of claim 1, wherein a first end of the impeller shaft is provided with a first receiving hole, a second end of the impeller shaft is provided with a second receiving hole, the first resilient member is disposed in the first receiving hole, the first resilient member extends out of the first receiving hole, the second resilient member is disposed in the second receiving hole, and the second resilient member extends out of the second receiving hole.
3. The impeller capable of limiting the range of play of claim 2, wherein a first end of the impeller shaft is provided with a first stop structure to enable the first telescopic member to be positioned opposite the first receiving hole in an extended state, and a second end of the impeller shaft is provided with a second stop structure to enable the second telescopic member to be positioned opposite the second receiving hole in an extended state.
4. The impeller capable of limiting the range of play as claimed in any one of claims 1 to 3, wherein said first and second telescopic members are spheres.
5. The impeller capable of limiting the range of play of claim 3, wherein said first elastic assembly further comprises a first elastic member, the first telescopic component is a first ball body, the aperture of the first containing hole is larger than the diameter of the first ball body so that the first ball body can enter the first containing hole, the aperture of the opening of the first containing hole is smaller than the diameter of the first ball body to form a first limiting structure, the first elastic component is arranged in the first accommodating hole and is elastically connected with the first telescopic component, the second elastic component also comprises a second elastic part which is a second sphere, the aperture of the second containing hole is larger than the diameter of the second ball so that the second ball can enter the second containing hole, the aperture of the opening of the second containing hole is smaller than the diameter of the second ball body so as to form a second limiting structure.
6. The impeller capable of limiting the play range as claimed in claim 5, wherein the first elastic assembly further comprises a first slider movably disposed in the first accommodating hole, a first end of the first slider is connected to the first telescopic member, a second end of the first slider is connected to the first elastic member, the second elastic assembly further comprises a second slider movably disposed in the second accommodating hole, a first end of the second slider is connected to the second telescopic member, and a second end of the second slider is connected to the second elastic member.
7. The impeller capable of limiting the play range according to claim 6, wherein a first tapered hole is provided at an opening of the second containing hole, a second tapered hole is provided at an opening of the second containing hole, the first slider and the second slider are tapered members, the first slider cooperates with the first tapered hole to enable the first slider to be positioned in the first containing hole, and the second slider cooperates with the second tapered hole to enable the second slider to be positioned in the second containing hole.
8. The impeller capable of limiting the range of play as claimed in claim 1, wherein the impeller body is provided with weight ports.
9. The impeller capable of limiting the range of play of claim 1, wherein said impeller shaft is an integrally formed long shaft.
10. The impeller capable of limiting the range of motion as claimed in claim 1, wherein the magnetic member is a ring body, the upper end surface of the ring body is a magnetic surface, and the impeller shaft and the magnetic member are concentrically arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010771411.6A CN114018352A (en) | 2020-08-04 | 2020-08-04 | Impeller capable of limiting play range |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010771411.6A CN114018352A (en) | 2020-08-04 | 2020-08-04 | Impeller capable of limiting play range |
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| CN114018352A true CN114018352A (en) | 2022-02-08 |
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| CN202010771411.6A Pending CN114018352A (en) | 2020-08-04 | 2020-08-04 | Impeller capable of limiting play range |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002266785A (en) * | 2001-03-13 | 2002-09-18 | Calsonic Kansei Corp | Impeller for pump and its molding method |
| CN102500475A (en) * | 2011-10-28 | 2012-06-20 | 中国农业科学院农田灌溉研究所 | Pulse type micro-sprinkling irrigation spray head |
| CN204043720U (en) * | 2014-09-16 | 2014-12-24 | 宁波鼎洲仪表工贸有限公司 | The water meter of long service life |
| CN206177376U (en) * | 2016-11-17 | 2017-05-17 | 青岛海威茨仪表有限公司 | Vane -wheel type flowmeter does not have magnetism signal pickup assembly |
| CN107167192A (en) * | 2017-07-06 | 2017-09-15 | 福州金泽科技有限公司 | The more accurate water meter of metering |
| CN208973907U (en) * | 2018-06-28 | 2019-06-14 | 刘瑞英 | A kind of coupling agent daubing device |
| CN109945946A (en) * | 2019-03-12 | 2019-06-28 | 宁波水表股份有限公司 | Rotor water gauge measures drive mechanism |
| CN212340352U (en) * | 2020-08-04 | 2021-01-12 | 宁波水表(集团)股份有限公司 | Impeller capable of limiting play range |
-
2020
- 2020-08-04 CN CN202010771411.6A patent/CN114018352A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002266785A (en) * | 2001-03-13 | 2002-09-18 | Calsonic Kansei Corp | Impeller for pump and its molding method |
| CN102500475A (en) * | 2011-10-28 | 2012-06-20 | 中国农业科学院农田灌溉研究所 | Pulse type micro-sprinkling irrigation spray head |
| CN204043720U (en) * | 2014-09-16 | 2014-12-24 | 宁波鼎洲仪表工贸有限公司 | The water meter of long service life |
| CN206177376U (en) * | 2016-11-17 | 2017-05-17 | 青岛海威茨仪表有限公司 | Vane -wheel type flowmeter does not have magnetism signal pickup assembly |
| CN107167192A (en) * | 2017-07-06 | 2017-09-15 | 福州金泽科技有限公司 | The more accurate water meter of metering |
| CN208973907U (en) * | 2018-06-28 | 2019-06-14 | 刘瑞英 | A kind of coupling agent daubing device |
| CN109945946A (en) * | 2019-03-12 | 2019-06-28 | 宁波水表股份有限公司 | Rotor water gauge measures drive mechanism |
| CN212340352U (en) * | 2020-08-04 | 2021-01-12 | 宁波水表(集团)股份有限公司 | Impeller capable of limiting play range |
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