CN202382789U - Oval gear flowmeter - Google Patents
Oval gear flowmeter Download PDFInfo
- Publication number
- CN202382789U CN202382789U CN2011205163261U CN201120516326U CN202382789U CN 202382789 U CN202382789 U CN 202382789U CN 2011205163261 U CN2011205163261 U CN 2011205163261U CN 201120516326 U CN201120516326 U CN 201120516326U CN 202382789 U CN202382789 U CN 202382789U
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- China
- Prior art keywords
- gear
- sender unit
- magnetic steel
- radially
- flowmeter
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Abstract
The utility model discloses an oval gear flowmeter, which comprises a casing, wherein a lower side metering cavity and an upper side measuring cavity are formed by a partition plate in a segmented mode in the casing, a liquid inlet and a liquid outlet arranged on two sides of the casing respectively are communicated with the metering cavity, a pair of radial elliptic gears which can mutually roll and rotate is arranged in the metering cavity, transmission gears are fixed at the upper ends of the radial elliptic gears and are engaged with lower magnetic steels, and the upper ends of the lower magnetic steels are attached to the partition plate; upper magnetic steels which are directly facing the lower magnetic steels are rotated by the partition plate, a collaboration data objects for NTS (CDONTS) which is integrated with the upper magnetic steels rotates synchronously, a sender unit signal is cut, a pulse signal which is proportional to a rotational speed can be obtained by a sender unit, and a pulse signal which is proportional to flow is output by the sender unit through a connecting terminal. According to the oval gear flowmeter, the radial gear distribution elliptic gears are utilized, and a subtle change of the flow can lead to the rotation of the radial gears, thereby a measuring accuracy and sensitivity of the flowmeter are remarkably improved.
Description
Technical field:
The utility model relates to the flowmeter processing technique field, relates in particular to a kind of oval gear flowmeter.
Background technology:
Oval gear flowmeter is a kind of of volumeter; The measuring sensor of its core is a pair of intermeshing elliptic gear rotor; Utilize a pair of like this elliptic rotor continuously to be divided into single known volume part to the fluid in the measuring room, one by one, repeatedly be full of and the number of times that discharges this volume segment fluid flow is measured the flow volume total amount according to measuring room.Therefore, elliptic gear is as the critical component of oval gear flowmeter, and its design and level of processing are the gordian techniquies in the oval gear flowmeter.
The elliptic gear that traditional oval gear flowmeter uses is to arrange the gear teeth along the direction of pitch curve normal, is called normal direction cloth tooth elliptic gear.This gear drive is comparatively stable, but in the generate process, because shape is special, the cumulative errors of lathe, cutter etc.; Cause tooth-formation of gear error to occur; Thereby cause the gear meshing gap to be strengthened, tooth surface abrasion is very fast, has influenced the serviceable life of flowmeter; Flowmeter is for the variation of little or tiny flow quantity simultaneously, and reaction is sensitive inadequately.
Traditional low discharge oval gear flowmeter adopts the mechanical drive counter mostly, on-the-spot indication integrated flux.But because the friction between the mechanical transmissioning piece is bigger, make transmission efficiency reduce, counter indication flow and actual flow error are bigger, are difficult to guarantee satisfy the flow range of the broad of accuracy requirement.And the mechanical transmissioning piece wearing and tearing are very fast, also influenced the serviceable life of flowmeter.
The utility model content:
For avoiding above-mentioned existing in prior technology weak point, the purpose of the utility model provides a kind of oval gear flowmeter, is equipped with the teletransmission sender unit simultaneously, with serviceable life of improving flowmeter, can obtain higher precision for the measurement of tiny flow quantity.
The technical scheme of the utility model is following:
Oval gear flowmeter comprises housing that has measuring room and the assembly of posting a letter that is installed on the housing top, and the housing left and right sides has inlet and the liquid outlet that is connected with measuring room; It is characterized in that: be provided with the radially elliptic gear of a pair of mutual rolling rotation in the described measuring room, the gear teeth of described radially elliptic gear are for radially being provided with, and said radially setting is on the radial line direction of the gear teeth pitch curve node and the center of rotation line that are arranged in elliptic gear; Described ellipse radially is equipped with cover plate in the gear top; The described assembly of posting a letter comprises shell, is provided with integrated dividing plate in the shell, and the dividing plate below is rotatablely equipped with lower magnetic steel; Lower magnetic steel is through passing through the driving gear pair driven rotary between dividing plate and the cover plate; Rotate the dividing plate top has the upper magnetic steel over against lower magnetic steel, and the upper magnetic steel top is equipped with sender unit, and the turning axle of sender unit is installed in the center pit of upper magnetic steel; The sender unit upper end is equipped with connection terminal, and connection terminal is electrically connected with the binding post of outer shell outer wall.
Described oval gear flowmeter is characterized in that: on the turning axle outer wall of described sender unit the dish of posting a letter is installed.
Compared with present technology, the beneficial effect of the utility model is embodied in:
1, the radially cloth tooth elliptic gear that adopts of the utility model can both cause the radially rotation of gear to the subtle change of flow, has improved the measuring accuracy and the sensitivity of flowmeter thus greatly.
Registration when 2, gear is meshing with each other with a pair of radially in the utility model is littler than normal direction gear, has reduced the stuck probability of moving component, the security that has improved flowmeter.
3, the utility model has stronger adaptive faculty to temperature variation in the flowmeter, has avoided the latch phenomenon that temperature raises and causes because gear works long hours.
4, the utility model adopts direct teletransmission sender unit, to not requiring the occasion of on-the-spot indication, has significantly reduced the friction of mechanical transmissioning piece, and transmission accuracy is higher, has improved the precision of flowmeter.
Description of drawings:
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the radially elliptic gear structural representation of the utility model.
Embodiment:
Referring to Fig. 1, Fig. 2:
Oval gear flowmeter comprises housing 2 that has measuring room 1 and the assembly of posting a letter that is installed on housing 2 tops, and housing 2 left and right sides have the inlet 3 and liquid outlet 4 that is connected with measuring room 1; Be provided with the radially elliptic gear 5 of a pair of mutual rolling rotation in the measuring room 1; Radially the gear teeth 5-1 of elliptic gear 5 is radially to be provided with, radially be provided be the gear teeth 5-1 pitch curve 5-2 node that is arranged in elliptic gear with the radial line 5-3 direction of center of rotation line on, ellipse radially gear 5 and transmission gear 10 is integral; Its top is equipped with cover plate 6; The assembly of posting a letter comprises shell 7, is provided with integrated dividing plate 8 in the shell 7, and dividing plate 8 belows are rotatablely equipped with lower magnetic steel 9 (lower magnetic steel has another name called wet type magnet steel assembly); Lower magnetic steel 9 is by transmission gear 10 driven rotary; Rotate dividing plate 8 tops has the upper magnetic steel 11 (having another name called dry type magnet steel assembly) over against lower magnetic steel 9 to rotate simultaneously, and turning axle 13 is installed on the center pit of upper magnetic steel 11, and the dish 16 of posting a letter is installed in also rotation synchronously on the turning axle 13; Dish 16 cutoff signals of posting a letter that sender unit 12 is rotated; Obtain and the proportional pulse signal of rotational speed, sender unit 12 upper ends are equipped with connection terminal 14, and connection terminal 14 is electrically connected with the binding post 15 of outer shell outer wall.
Radially elliptic gear 5 is a principle with the gear teeth of revising pitch curve 5-2 radius-of-curvature ρ≤mZ/2, by tooth correction transverse tooth thickness, and the mutual interference of the gear teeth of avoiding being meshed; Simultaneously, the tooth curve in 1/4th quadrants is non-by the coordinate axis symmetry, but former relatively point symmetry, promptly first quartile is identical with the curve of third quadrant, second quadrant is identical with four-quadrant curve.
Claims (2)
1. an oval gear flowmeter comprises housing that has measuring room and the assembly of posting a letter that is installed on the housing top, and the housing left and right sides has inlet and the liquid outlet that is connected with measuring room; It is characterized in that: be provided with the radially elliptic gear of a pair of mutual rolling rotation in the described measuring room, the gear teeth of described radially elliptic gear are for radially being provided with, and said radially setting is on the radial line direction of the gear teeth pitch curve node and the center of rotation line that are arranged in elliptic gear; Described ellipse radially is equipped with cover plate in the gear top; The described assembly of posting a letter comprises shell, is provided with integrated dividing plate in the shell, and the dividing plate below is rotatablely equipped with lower magnetic steel; Lower magnetic steel is through passing through the driving gear pair driven rotary between dividing plate and the cover plate; Rotate the dividing plate top has the upper magnetic steel over against lower magnetic steel, and the upper magnetic steel top is equipped with sender unit, and the turning axle of sender unit is installed in the center pit of upper magnetic steel; The sender unit upper end is equipped with connection terminal, and connection terminal is electrically connected with the binding post of outer shell outer wall.
2. oval gear flowmeter according to claim 1 is characterized in that: on the turning axle outer wall of described sender unit the dish of posting a letter is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205163261U CN202382789U (en) | 2011-12-13 | 2011-12-13 | Oval gear flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205163261U CN202382789U (en) | 2011-12-13 | 2011-12-13 | Oval gear flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202382789U true CN202382789U (en) | 2012-08-15 |
Family
ID=46631285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205163261U Expired - Fee Related CN202382789U (en) | 2011-12-13 | 2011-12-13 | Oval gear flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202382789U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106415214A (en) * | 2014-07-21 | 2017-02-15 | 艺康美国股份有限公司 | Oval gear meter |
| CN109520581A (en) * | 2019-01-02 | 2019-03-26 | 安徽天维仪表有限公司 | A kind of the mini elliptic gear flowmeter and processing method of no machine driven system |
-
2011
- 2011-12-13 CN CN2011205163261U patent/CN202382789U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106415214A (en) * | 2014-07-21 | 2017-02-15 | 艺康美国股份有限公司 | Oval gear meter |
| CN106415214B (en) * | 2014-07-21 | 2019-05-28 | 艺康美国股份有限公司 | Oval gear flowmeter |
| CN109520581A (en) * | 2019-01-02 | 2019-03-26 | 安徽天维仪表有限公司 | A kind of the mini elliptic gear flowmeter and processing method of no machine driven system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120815 Termination date: 20191213 |