CN202903242U - Water meter impeller - Google Patents
Water meter impeller Download PDFInfo
- Publication number
- CN202903242U CN202903242U CN 201220519410 CN201220519410U CN202903242U CN 202903242 U CN202903242 U CN 202903242U CN 201220519410 CN201220519410 CN 201220519410 CN 201220519410 U CN201220519410 U CN 201220519410U CN 202903242 U CN202903242 U CN 202903242U
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- CN
- China
- Prior art keywords
- impeller
- water
- water meter
- impeller shaft
- shaft
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- 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.)
- Expired - Lifetime
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Abstract
The utility model discloses a water meter impeller and belongs to the technical field of flow measurement equipment. The water meter impeller comprises an impeller shaft and blades, the blades are arranged on the impeller shaft, and a surface protruding outward is arranged on the outer lateral surface at the lower portion of the impeller shaft. In the process of use, water spreads upward from the bottom portion of the impeller gradually, when the water rises upward, the water flushes the bottom portion of the surface and the impeller is lifted upward, and the impeller is in a dangling state, and therefore friction force between the impeller and a centre becomes small, the water fast covers the upper portion of the surface, when the water covers the surface, the water downward produces pressure effect towards the surface, the problem that the impeller downward impacts the centre at the top portion is avoided, and frictional resistance is reduced.
Description
Technical field
The utility model relates to a kind of flow measurement, especially relates to a kind of water meter turbine.
Background technology
Water meter is a kind of common discharge metering instrument, and its principle of work is, when water enters impeller box by water meter housing, impacts impeller, makes impeller produce driving moment, and the driving moment of impeller is during greater than the moment of resistance of impeller, and impeller begins rotation.When flow one regularly, driving moment and moment of resistance balance, the impeller rotation that remains a constant speed.Measure flow and the integrated flux of aqueous fluid in the pipeline by the rotational speed of perception impeller in current.
Impeller comprises impeller shaft and blade, and blade is arranged on the impeller shaft, and the impeller shaft bottom is provided with blind hole, and the thimble on the impeller box props up the bottom of blind hole.Impeller is owing to the Action of Gravity Field of self, and meeting is so that produce stiction between thimble and the impeller shaft.Resistance when this part stiction becomes vane rotary, in the situation that low discharge, water meter can't accurate-metering discharge, therefore is necessary to improve.
Summary of the invention
The utility model provides a kind of water meter turbine for deficiency of the prior art, and the friction force between impeller and the thimble reduces greatly.
For solving the problems of the technologies described above, the utility model is solved by following technical proposals: water meter turbine, comprise impeller shaft and blade, and described blade is arranged on the impeller shaft, is provided with outwardly directed on the lateral surface of the bottom of described impeller shaft.During use, water is from the progressively past vertical spread of wheel bottom, and water is in the process that rises, and up lift impeller the bottom of wash surface, so that impeller is in vacant state, it is very little that the friction force between impeller and the push rod just becomes.Face top also can be awash fast, and when it was awash, water can produce pressure-acting downwards to it again, avoids impeller upwards to impact the top thimble, reduces mutual mechanical friction resistance.
In the technique scheme, preferred, described face is the bowl-shape of back-off.Such shape is conducive to collect the impulse force that water makes progress more, so that impeller is in vacant state sooner.
In the technique scheme, preferred, the top of impeller shaft is provided with thimble.Thimble inserts in the blind hole of dial plate bottom setting, plays the effect of restriction impeller shaft position.
In the technique scheme, preferred, the bottom of described thimble arranges gear.Gear in the gearcase above gear passes to for the rotation with impeller.Gear drives the integrated flow of corresponding pointer or character wheel display water-meter again.
In the technique scheme, preferred, the outer end of described blade is provided with chamfering.Resistance when chamfering is used for reducing vane rotary.
The beneficial effects of the utility model are: water is from the progressively past vertical spread of wheel bottom, water is in the process that rises, up lift impeller the bottom of wash surface, so that impeller is in vacant state, it is very little that friction force between impeller and the thimble just becomes, face top also can be awash fast, and when it was awash, water can produce pressure-acting downwards to it again, avoid impeller upwards to impact top, capable of reducing friction resistance.
Description of drawings
Fig. 1 is the angle schematic perspective view of the utility model embodiment.
Fig. 2 is another angle schematic perspective view of the utility model embodiment.
Fig. 3 is the schematic diagram that water meter inner core of the present utility model is installed.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail: referring to Fig. 1 to Fig. 2, water meter turbine 1 comprises impeller shaft 11 and blade 12, and described blade 12 is one-body molded with impeller shaft 11, and the top of impeller shaft 11 is provided with thimble 14.The bottom of thimble 14 arranges gear 13.The outer end of blade 12 forms chamfering 12a.The baffle plate 15 of moulding one ring shape on the lateral surface of the bottom of impeller shaft 11.The back side of baffle plate 15 links to each other with the bottom of blade 12.The front of baffle plate 15 is a bowl-shape face 15a who is back-off.The bottom of impeller shaft 11 is provided with a blind hole 11a, is fixed with a lining 16 in the blind hole 11a.
Referring to Fig. 3, a kind of water meter inner core comprises dial plate 2, gearcase 3, impeller box 4, impeller 1 and screen pack 5, and wherein the gear in the gearcase 3 and the pointer on the dial plate 2 be not shown in the view.The bottom of dial plate 2 forms a lug boss 21, forms blind hole 22 in the lug boss 21, and blind hole 22 matches with the thimble 14 of impeller 1 top moulding.Have a cavity 4a who holds impeller 1 in the impeller box 4, the bottom of cavity 41 is fixed with push rod 43, and push rod 43 matches with lining 16.Impeller box 4 bottoms have the water inlet 41 that communicates with cavity 4a, and the top of impeller box 4 forms the water delivering orifice 42 that communicates with described cavity 4a, and screen pack 5 is enclosed within outside the impeller box 4.When not having current to pass through, because the gravity of impeller, the top of push rod 43 props up the bottom surface of lining 16.
During use, water is through after the screen pack 5, enter in the cavity 4a by water inlet 41, then current begin to wash away the face 15a of baffle plate 15 bottoms, impeller 1 is up lifted under this acting force, this is just so that impeller 1 is in vacant state, and at this time the mechanical friction power between the bottom surface of push rod 43 and lining 16 reduces greatly.When current further increase, water logging in the cavity 4a there was not the back side of baffle plate 15, at this moment, water can produce pressure-acting downwards to baffle plate 15 again, offset the up impulse force of impulse face 15a of current, avoid impeller 1 to be subject to power upwards excessive, so that the increase of the pressure between push rod 43 and the blind hole 22, thereby also so that the friction force increase.
Claims (5)
1. water meter turbine comprises impeller shaft (11) and blade (12), and described blade (12) is arranged on the impeller shaft (11), it is characterized in that: be provided with on the lateral surface of the bottom of described impeller shaft (11) outwardly directed (15a).
2. water meter turbine according to claim 1, it is characterized in that: described (15a) is the bowl-shape of back-off.
3. water meter turbine according to claim 2, it is characterized in that: the top of described impeller shaft (11) is provided with thimble (14).
4. water meter turbine according to claim 3, it is characterized in that: the bottom of described thimble (14) arranges gear (13).
5. water meter turbine according to claim 3, it is characterized in that: the outer end of described blade (12) is provided with chamfering (12a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220519410 CN202903242U (en) | 2012-10-11 | 2012-10-11 | Water meter impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220519410 CN202903242U (en) | 2012-10-11 | 2012-10-11 | Water meter impeller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202903242U true CN202903242U (en) | 2013-04-24 |
Family
ID=48123901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220519410 Expired - Lifetime CN202903242U (en) | 2012-10-11 | 2012-10-11 | Water meter impeller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202903242U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105157760A (en) * | 2015-08-18 | 2015-12-16 | 杭州竞达电子有限公司 | Heavy caliber spiral wing water meter impeller gravity balance device and gravity balancing method |
| CN105387893A (en) * | 2015-12-11 | 2016-03-09 | 罗美特（上海）自动化仪表股份有限公司 | Impeller structure of turbine flow meter and turbine flow meter |
| CN109060058A (en) * | 2018-07-28 | 2018-12-21 | 厦门市龙腾实业有限公司 | A kind of water meter of preventing water burglary |
-
2012
- 2012-10-11 CN CN 201220519410 patent/CN202903242U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105157760A (en) * | 2015-08-18 | 2015-12-16 | 杭州竞达电子有限公司 | Heavy caliber spiral wing water meter impeller gravity balance device and gravity balancing method |
| CN105157760B (en) * | 2015-08-18 | 2018-04-20 | 杭州竞达电子有限公司 | The impeller gravity balance device and its gravitational equilibrium method of heavy caliber spiral shell wing water meter |
| CN105387893A (en) * | 2015-12-11 | 2016-03-09 | 罗美特（上海）自动化仪表股份有限公司 | Impeller structure of turbine flow meter and turbine flow meter |
| CN105387893B (en) * | 2015-12-11 | 2020-02-11 | 罗美特（上海）自动化仪表股份有限公司 | Impeller structure of turbine flowmeter and turbine flowmeter thereof |
| CN109060058A (en) * | 2018-07-28 | 2018-12-21 | 厦门市龙腾实业有限公司 | A kind of water meter of preventing water burglary |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 315032 No. 268, Lane 99, Beihai Road, Jiangbei District, Zhejiang, Ningbo Patentee after: Ningbo water meter (Group) Co.,Ltd. Address before: 315032 No. 268, Lane 99, Beihai Road, Jiangbei District, Zhejiang, Ningbo Patentee before: NINGBO WATER METER Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130424 |
|
| CX01 | Expiry of patent term |