CN201382792Y - Water flow sensor impeller assembly and water flow sensor employing same - Google Patents
Water flow sensor impeller assembly and water flow sensor employing same Download PDFInfo
- Publication number
- CN201382792Y CN201382792Y CN200920050341U CN200920050341U CN201382792Y CN 201382792 Y CN201382792 Y CN 201382792Y CN 200920050341 U CN200920050341 U CN 200920050341U CN 200920050341 U CN200920050341 U CN 200920050341U CN 201382792 Y CN201382792 Y CN 201382792Y
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- impeller
- flow sensor
- water flow
- impeller assembly
- rotating shaft
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Abstract
The utility model relates to a water flow sensor impeller assembly. The assembly comprises an impeller sleeved on a rotation shaft, as well as magnets, wherein the magnets are fixedly arranged on the impeller; the impeller is provided with at least three spiral blades; and small through holes are formed on the blades in corresponding positions to prevent backflow and reversion. The utility model also discloses a water flow sensor employing the impeller assembly. The impeller is designed in the structure of the spiral blades with the long flow holes to effectively overcome the rotational inertia of the impeller when a water supply is cut off, so that the impeller assembly in high-speed rotation can be rapidly halted, and pulse signals can be terminated. The utility model has the advantages of reasonable design, compact structure, high safety and reliability, wide detection range, long service life, simple structure, good commonality, low starting hydraulic pressure, reversion prevention and abrasion resistance. The utility model accords with the needs of the national conditions of our country, and can improve the product properties in all aspects.
Description
Technical field
The utility model relates to the valve technology field in the mechanical engineering, particularly the operating means of being braked by electric or magnetic.
Background technology
After the development of China's gas industry, particularly China joined WTO, emphasize that safe and reliable, energy savings is the top priority of combustion gas tool industry.There are the following problems for tangential vane type water flow sensor in the market:
1, the straight shape blade shape design of the impeller assembly of selecting for use employing rice word can not be prevented reversing, and the water backflow also can produce output pulse signal and cause combustion gas tool misoperation generation security incident when closing water.
2, to be enclosed within the rotating shaft directly be plastics and metal friction to impeller assembly, is easy to cause wearing and tearing.Be easy to wearing and tearing when particularly being used in the combustion gas tool of long-term work, make the impeller assembly axial motion gap performance that has a strong impact on bigger than normal.
The utility model content
The purpose of this utility model is to provide a kind of water flow sensor impeller assembly that can effectively prevent the backflow reversing, guarantee safety.
Another purpose of the present utility model is to provide a kind of water flow sensor of using above-mentioned impeller assembly.
In order to reach the foregoing invention purpose, the utility model has adopted following technical scheme: the water flow sensor impeller assembly, comprise the impeller and the magnetic patch that are socketed in the rotating shaft, magnetic patch is fixedly arranged on impeller, described impeller has the helical blade more than three or three, and symmetry offers the little perforation of anti-backflow reversing on the blade.
Further, above-mentioned impeller assembly also comprises the limited post that high-abrasive material is made, and installs between described impeller and described rotating shaft, to reduce the wearing and tearing to impeller assembly, increases the service life, and reduces production costs.
Above-mentioned impeller assembly also comprises stainless shot, installs between described rotating shaft and impeller housing, to avoid the direct friction of rotating shaft to impeller housing.
Water flow sensor comprises the valve body with entery and delivery port end, installs impeller assembly, rotating shaft and Hall element in valve body, and impeller assembly is socketed on rotating shaft, and described impeller assembly adopts above-mentioned water flow sensor impeller assembly.
Above-mentioned rotating shaft is perpendicular to the water (flow) direction of entery and delivery port end.
The utility model in impeller setting-in stainless steel ball, effectively reduce wear, improve serviceable life and stability greatly; Adopt helical blade structural design impeller and long discharge orifice is set in the above, effectively overcome wheel rotation inertia when cutting off the water, the impeller assembly of high speed rotating is stopped fast, the stopping pulse signal.Controller does not receive pulse signal, and immediate instruction gas ratio valve assembly closes valve, cuts off source of the gas, effectively reduces and cuts off the water temperature rise and guarantee safety.Reasonable in design, the compact conformation of the utility model, core component as flow sensor, have characteristics such as safe reliability height, sensing range are wide, long service life, have advantages such as simple in structure, that versatility good, startup hydraulic pressure low (hydraulic pressure 0.01MPa can start) is prevented reversing, wear-resisting simultaneously, the needs that tally with the national condition, can be widely used on the tangential vane type water flow sensor, improve the performance of product comprehensively.
Description of drawings
Fig. 1 is the utility model outside drawing.
Fig. 2 is the utility model structure principle chart.
Fig. 3 is that the A of Fig. 2 is to view.
Embodiment
The gordian technique of water flow sensor impeller assembly is gordian technique integrated uses such as magnetic effect principle, fluid mechanics.How to handle flow and the particular importance that concerns of exporting pulse characteristic, discharge stability characteristic (quality) well.
As the core component of water flow sensor, the concrete structure principle of work of impeller assembly is as follows: impeller assembly mainly is made up of plastic impeller 31, limited post 32, stainless shot 33, locking plate 34, magnetic patch 35.Plastic impeller 31 is coupling in rotating shaft 2, and limited post is installed between rotating shaft 2 and impeller 31, plays rolling bearing.Limited post directly contacts with rotating shaft 2 with the high-abrasive material manufacturing, contacts with the direct of rotating shaft to have avoided impeller, so the comparatively cheap made of impeller available rates, thereby reduced production cost.Magnetic patch 35 is fixed on the impeller 31, and with locking plate 34 fastenings, follows wheel rotation and rotates.Impeller 31 includes at least three blades, is the helical blade structure, and symmetry offers little perforation---the long discharge orifice 36 of anti-backflow reversing on the blade, and effectively anti-backflow reversing guarantees safety.Between impeller housing and rotating shaft 2, be installed on stainless shot 33, avoid the direct friction of rotating shaft impeller housing.
The utility model adopts the separate assembling design, makes things convenient for the client to prepare flexibly, is suitable for the requirement of different capabilities different types of machines, improves the versatility of product greatly.The scope of application is wide, and discharge 1～30L/min all can reliable output signal.
As shown in Fig. 1～3, water flow sensor comprises the valve body 1 with entery and delivery port end, installs impeller assembly 3, rotating shaft 2 and Hall element 4 in valve body, impeller assembly is socketed on rotating shaft 2, and described impeller assembly 3 adopts aforesaid water flow sensor impeller assembly.Hall element 4 is installed outside inlet pipeline.Rotating shaft 2 is perpendicular to the water (flow) direction of water-in and water-out square end.
When current pass through valve body 1, because there are offset distance 8mm in valve inleting water center and rotating shaft 2 centers, impeller assembly 3 is enclosed within the rotating shaft 2, when current by the time promote impeller assembly 3 and rotate, magnetic patch 35 also rotates thereupon, and rotating speed produces the rotating magnetic field of different magnetic poles along with the size of flow forms linear change, and cutting magnetic induction is answered line.Hall element 4 (Hall element sampling) is exported corresponding pulse signal, feed back to controller, regulate and control the size of current of gas ratio valve by the size of controller judgement discharge, avoid gas heater cool phenomenon of warm winter in summer in use to occur, thereby reach the purpose of auto-control water temperature, maintenance effluent temperature constancy.
The concrete enforcement of the technical essential of tangential vane type water flow sensor and critical process is as follows:
1, adopts small size (diameter only the is 10mm) magnetic patch of four pairs of magnetic poles, the influence that effectively solves impurity in the too much planar water.
2, adopt split type configuration design, each parts all can conveniently be replaced, and makes things convenient for the client to prepare flexibly, improves the versatility of product greatly.
3, the scope of application is wide, and discharge 1～30L/min all can reliably rotate output signal, is suitable for the requirement of different capabilities different types of machines.
4, magnetic patch adopts the moulding of import complex ferrite material monolithic high temperature sintering, anticorrosive, anti-incrustation scale superior performance.
5, impeller and limited post adopt import heat resistant and wear resistant material injection mo(u)lding and embed stainless steel ball and guarantee wear-resistingly, and long service life, movement response are reliable rapidly.
6, impeller shape adopts the helical blade structural design and the effectively anti-backflow reversing of long discharge orifice is set and guarantees safety, fundamentally solves in the past water flow sensor and starts hydraulic pressure height, the easy shortcoming of misoperation.
The utility model is simple in structure, reliability is high, sensing range is wide, gordian techniquies such as integrated use magnetic effect principle, fluid mechanics, and flow pulse characteristic and stabilized current characteristic are more stable.
Claims (5)
1, water flow sensor impeller assembly comprises the impeller and the magnetic patch that are socketed in the rotating shaft, and magnetic patch is fixedly arranged on impeller, it is characterized in that: described impeller has the helical blade more than three or three, and symmetry offers the little perforation of anti-backflow reversing on the blade.
2, water flow sensor impeller assembly according to claim 1 is characterized in that: also comprise the limited post that high-abrasive material is made, install between described impeller and described rotating shaft.
3, water flow sensor impeller assembly according to claim 1 is characterized in that: also comprise stainless shot, install between the housing of described rotating shaft and impeller.
4, water flow sensor, comprise valve body with entery and delivery port end, install impeller assembly, rotating shaft and Hall element in valve body, impeller assembly is socketed on rotating shaft, it is characterized in that: described impeller assembly adopts claim 1 or 2 or 3 described water flow sensor impeller assemblies.
5, water flow sensor according to claim 4 is characterized in that: described rotating shaft is perpendicular to the water (flow) direction of entery and delivery port end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920050341U CN201382792Y (en) | 2009-01-19 | 2009-01-19 | Water flow sensor impeller assembly and water flow sensor employing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920050341U CN201382792Y (en) | 2009-01-19 | 2009-01-19 | Water flow sensor impeller assembly and water flow sensor employing same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201382792Y true CN201382792Y (en) | 2010-01-13 |
Family
ID=41526264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920050341U Expired - Lifetime CN201382792Y (en) | 2009-01-19 | 2009-01-19 | Water flow sensor impeller assembly and water flow sensor employing same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201382792Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102589621A (en) * | 2012-03-09 | 2012-07-18 | 陈沛 | Impeller of high-precision rotor type flow transducer and working method of impeller |
| CN102840357A (en) * | 2012-08-23 | 2012-12-26 | 杭州云谷科技有限公司 | Flow measurement and control integrated device |
| CN103364035A (en) * | 2013-06-03 | 2013-10-23 | 广东芬尼克兹节能设备有限公司 | Pulse flowmeter |
| CN106052768A (en) * | 2016-08-04 | 2016-10-26 | 东莞市倍益清环保科技有限公司 | Flow meter for metering flow of water purifier |
| CN107519556A (en) * | 2017-09-27 | 2017-12-29 | 王彦 | The controllable externally connected portable formula infusion device of novel remote |
-
2009
- 2009-01-19 CN CN200920050341U patent/CN201382792Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102589621A (en) * | 2012-03-09 | 2012-07-18 | 陈沛 | Impeller of high-precision rotor type flow transducer and working method of impeller |
| CN102840357A (en) * | 2012-08-23 | 2012-12-26 | 杭州云谷科技有限公司 | Flow measurement and control integrated device |
| CN103364035A (en) * | 2013-06-03 | 2013-10-23 | 广东芬尼克兹节能设备有限公司 | Pulse flowmeter |
| CN106052768A (en) * | 2016-08-04 | 2016-10-26 | 东莞市倍益清环保科技有限公司 | Flow meter for metering flow of water purifier |
| CN107519556A (en) * | 2017-09-27 | 2017-12-29 | 王彦 | The controllable externally connected portable formula infusion device of novel remote |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100113 |
|
| CX01 | Expiry of patent term |