CN107044872A - Fine liquid flowmeter - Google Patents
Fine liquid flowmeter Download PDFInfo
- Publication number
- CN107044872A CN107044872A CN201710341571.5A CN201710341571A CN107044872A CN 107044872 A CN107044872 A CN 107044872A CN 201710341571 A CN201710341571 A CN 201710341571A CN 107044872 A CN107044872 A CN 107044872A
- Authority
- CN
- China
- Prior art keywords
- fluid
- testing gears
- fine liquid
- cavity
- test
- 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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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/10—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects using rotating vanes with axial admission
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The present invention provides a kind of fine liquid flowmeter, existing fine liquid flowmeter is which solved in test, the rotation direction of testing gears can be very unstable, intermeshing testing gears can form the frequent rotation of positive and negative both direction, the rotation direction of testing gears can be very unstable, testing gears formation quiet rum needs a period of time, such impact can influence measuring accuracy, also the life-span of testing gears can be reduced, the technical problem in the life-span of gear shaft and bearing can be also influenceed simultaneously, it is provided with shell, enclosure is provided with fluid test cavity, fluid test cavity side is provided with fluid intake, fluid test cavity opposite side is provided with fluid issuing, fluid test inside cavity is provided with a pair of intermeshing testing gears, divided fluid stream entrance is provided between fluid intake and fluid test cavity.It the composite can be widely applied to the flow rate test of fine liquid.
Description
Technical field
The present invention relates to a kind of flowmeter, more particularly to a kind of fine liquid flowmeter.
Background technology
It is known that fine liquid flowmeter is provided with shell, enclosure is provided with fluid test cavity, fluid test cavity
Side is provided with fluid intake, and fluid test cavity opposite side is provided with fluid issuing, and fluid test inside cavity is mutual provided with a pair
Meshed gears, during this fine liquid flowmeter detection fine liquid flow, when fluid enters fluid test inside cavity, is pushed away
The pitch wheel of dynamic fluid test inside cavity is rotated, and linear sealing, tooth are formed between the gear teeth of pitch wheel
The gear teeth excircle of wheel also forms linear sealing with fluid test cavity inner wall, and fluid can be measured by the revolution of testing gears
Flow.
Existing fine liquid flowmeter is in test, as shown in figure 1, entering fluid test cavity 3 by fluid intake 6
Fluid can to test cavity 3 inside intermeshing testing gears 4 formation impact, fluid by the straight line of fluid intake 6 punching
Hit on testing gears 4, when impact moment, the impact force direction that testing gears 4 are subject to disperses, between two gear teeth in backlash
Fluid can to adjacent two gear teeth simultaneously act power, cause the rotation direction of testing gears 4 can be very unstable, be intermeshed
Testing gears 4 can form frequent impact and the rotation of positive and negative both direction, when the formation quiet rum of testing gears 4 needs one section
Between, such impact can influence measuring accuracy, can also reduce the life-span of testing gears 4, while can also influence testing gears main shaft 5
With the life-span of bearing.
The content of the invention
The present invention exactly in order to solve existing fine liquid flowmeter in test, is surveyed by fluid intake into fluid
Trying the fluid of cavity can impact to the intermeshing testing gears formation for testing inside cavity, and fluid passes through fluid intake straight line
Impact on testing gears, when impact moment, the impact force direction that testing gears are subject to disperses, the rotation direction meeting of testing gears
Very unstable, intermeshing testing gears can form the frequent rotation of positive and negative both direction, the rotation direction meeting of testing gears
Very unstable, testing gears formation quiet rum needs a period of time, and such impact can influence measuring accuracy, can also reduce survey
The life-span of gear is tried, there is provided a kind of fine liquid flowmeter while can also influence the technical problem in the life-span of gear shaft and bearing
In test, the intermeshing test that the fluid for entering fluid test cavity by fluid intake will not be to test inside cavity
Gear formation impact, fluid will not be directly impinging on testing gears by fluid intake straight line, the impact that testing gears are subject to
Force direction is stable, and the rotation direction of testing gears is stable, and intermeshing testing gears will not form the frequency of positive and negative both direction
Numerous to rotate, testing gears can form quiet rum at once, not interfere with measuring accuracy, will not reduce the testing gears life-span, together
When do not interfere with yet gear shaft and bearing life-span fine liquid flowmeter.
The present invention solve above-mentioned technical problem technical scheme be, a kind of fine liquid flowmeter, its be provided with shell, shell
Inside is provided with fluid test cavity, and fluid test cavity side is provided with fluid intake, and fluid test cavity opposite side is provided with fluid
Outlet, fluid test inside cavity is set provided with a pair of intermeshing testing gears between fluid intake and fluid test cavity
There is divided fluid stream entrance.
Preferably, the divided fluid stream entrance being provided between fluid intake and fluid test cavity is two-way, two-way fluid point
Inflow entrance is to be arranged symmetrically relative to fluid intake axis.
Preferably, testing gears use normal shift involute cylindrical gear.
Preferably, the normal shift coefficient of involute cylindrical gear is 0.05-0.15.
Preferably, the normal shift coefficient of involute cylindrical gear is 0.1.
Preferably, testing gears material is PEEK.
Present invention has the advantages that, due to a kind of fine liquid flowmeter, it is provided with shell, and enclosure is surveyed provided with fluid
Cavity is tried, fluid test cavity side is provided with fluid intake, and fluid test cavity opposite side is provided with fluid issuing, fluid test chamber
Internal portion is provided with divided fluid stream entrance, test provided with a pair of pitch wheels between fluid intake and fluid test cavity
When, by fluid intake enter fluid test cavity fluid will not to test inside cavity intermeshing testing gears shape
Into impact, fluid will not be directly impinging on testing gears by fluid intake straight line, the impact force direction that testing gears are subject to
Stable, the rotation direction of testing gears is stable, and intermeshing testing gears will not form the frequent rotation of positive and negative both direction,
Testing gears can form quiet rum at once, not interfere with measuring accuracy, will not reduce the life-span of testing gears, while also not
The life-span of gear shaft and bearing can be influenceed.
Brief description of the drawings
Fig. 1 is the structural representation of existing fine liquid flowmeter；
Fig. 2 is outline drawing of the embodiment of the present invention；
Fig. 3 is structural representation of the embodiment of the present invention.
Symbol description in figure：
1. fluid issuing；2. shell；3. fluid test cavity；4. testing gears；5. main gear shaft；6. fluid intake；7.
Divided fluid stream entrance.
Embodiment
The present invention is described further with reference to embodiment.
Fig. 2-3 is the embodiment of the present invention, and Fig. 2 is outline drawing of the embodiment of the present invention, the bottom of it can be seen from the figure that fluid intake 6
Portion is provided with two divided fluid stream entrances 7.
Fig. 3 is sectional view of the embodiment of the present invention, it can be seen from the figure that, a kind of fine liquid flowmeter, and it is provided with shell 2,
The inside of shell 2 is provided with fluid test cavity 3, and the side of fluid test cavity 3 is provided with fluid intake 6, the opposite side of fluid test cavity 3
Provided with fluid issuing 1, the inside of fluid test cavity 3 is surveyed provided with a pair of intermeshing testing gears 4, fluid intake 6 with fluid
Try to be provided with divided fluid stream entrance 7, the divided fluid stream entrance 7 being provided between fluid intake 6 and fluid test cavity 3 between cavity 3
For two-way, two-way divided fluid stream entrance 7 is to be arranged symmetrically relative to the axis of fluid intake 7.When test fluid passes through fluid intake 6
During into fluid test cavity 3, due to being provided with divided fluid stream entrance 7, fluid meeting between fluid intake 6 and fluid test cavity 3
Shunting is formed, is respectively enterd inside left and right divided fluid stream entrance 7, the fluid by shunting can drive testing gears 4 to rotate respectively,
Be not in the problem of impulsive force is disorderly, the testing gears 4 meshed together can smoothly start, and proceed by the stream of fluid
Examination is measured, this structure provided with divided fluid stream entrance 7 is particularly suitable for the flow rate test of fine liquid.Simultaneously because mutually nibbling
The impulsive force that the testing gears 4 of conjunction are subject to is steady, and the impulsive force of main gear shaft 5 and bearing is small, long lifespan.Flowed in the embodiment
The axis of body split entry 7 intersects with main gear shaft 5, so when fluid by divided fluid stream entrance 7 enters fluid test
When in cavity 3, the stress of testing gears 4 can be evenly steady.
Testing gears 4 in the embodiment use normal shift involute cylindrical gear, after normal shift coefficient, test tooth
The gear teeth tooth height of wheel 4 can increase, and be more beneficial for taking turns the linear engagement of between cog, and the linear range that it is intermeshed motion is longer, surveys
Examination is more accurate, and the flow rate test linearity for fine liquid is more preferable, by experimental analysis, the positive change of involute cylindrical gear 4
Potential coefficient is 0.05-0.15, can improve the precision of test, especially when normal shift coefficient selects 0.1, for carrying
The effect of high measuring accuracy is clearly.
The material selection PEEK of testing gears 4 of the embodiment, traditional handicraft is used as test using Stainless steel 316 L mostly
The material of gear 4,316L have good rotproofness to medium although cheap, but it has the disadvantage heavier-weight,
It is unfavorable for the rapid startup of flowmeter, is not particularly suitable for testing the flow of fine liquid, while stainless steel material hardness is high, is difficult
Processing, testing gears 4 material selection PEEK is lightweight, can start test during testing flow meter fluid at once, while PEEK materials
Material is also corrosion-resistant, easily realizes processing.
Only as described above, is only the specific embodiment of the present invention, when can not limit the model implemented of the present invention with this
Enclose, therefore the displacement of its equivalent assemblies, or the equivalent variations made according to scope of patent protection of the present invention and modification, it all should still belong to this hair
The category that bright claims are covered.
Claims (6)
1. a kind of fine liquid flowmeter, it is provided with shell, and the enclosure is provided with fluid test cavity, the fluid test
Cavity side is provided with fluid intake, and the fluid test cavity opposite side is provided with fluid issuing, the fluid test inside cavity
Provided with a pair of intermeshing testing gears, it is characterized in that being provided with divided fluid stream between the fluid intake and fluid test cavity
Entrance.
2. fine liquid flowmeter according to claim 1, it is characterised in that the fluid intake and fluid test cavity
Between the divided fluid stream entrance that is provided be two-way, the two-way divided fluid stream entrance is symmetrical cloth relative to fluid intake axis
Put.
3. fine liquid flowmeter according to claim 1, it is characterised in that the testing gears are gradually opened using normal shift
Line roller gear.
4. fine liquid flowmeter according to claim 3, it is characterised in that the normal shift of the involute cylindrical gear
Coefficient is 0.05-0.15.
5. fine liquid flowmeter according to claim 4, it is characterised in that the normal shift of the involute cylindrical gear
Coefficient is 0.1.
6. fine liquid flowmeter according to claim 3, it is characterised in that the testing gears material is PEEK.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710341571.5A CN107044872B (en) | 2017-05-16 | 2017-05-16 | Micro liquid flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710341571.5A CN107044872B (en) | 2017-05-16 | 2017-05-16 | Micro liquid flowmeter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107044872A true CN107044872A (en) | 2017-08-15 |
| CN107044872B CN107044872B (en) | 2023-09-05 |
Family
ID=59546054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710341571.5A Active CN107044872B (en) | 2017-05-16 | 2017-05-16 | Micro liquid flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107044872B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108591500A (en) * | 2018-07-18 | 2018-09-28 | 天津万枫仪表有限公司 | Special alloy regulating valve applied to high-pressure minimum flow working condition |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5992230A (en) * | 1997-11-15 | 1999-11-30 | Hoffer Flow Controls, Inc. | Dual rotor flow meter |
| JP2002250646A (en) * | 2001-02-23 | 2002-09-06 | Nippon Grease Nipple Kk | Gearing for flow measurement |
| US20020166586A1 (en) * | 2001-05-11 | 2002-11-14 | Flavelle William D. | Fluid metering device |
| US20090120507A1 (en) * | 2007-11-14 | 2009-05-14 | Roper Pump Company | Fluid metering and pumping device |
| CN102927002A (en) * | 2012-12-04 | 2013-02-13 | 泸州众大科技液压件有限公司 | High-pressure gear pump |
| CN205619982U (en) * | 2016-05-18 | 2016-10-05 | 其胜威纳(上海)润滑设备有限公司 | Online flow detection device of high accuracy |
| CN206862416U (en) * | 2017-05-16 | 2018-01-09 | 威海坤科流量仪表股份有限公司 | A kind of fine liquid flowmeter |
-
2017
- 2017-05-16 CN CN201710341571.5A patent/CN107044872B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5992230A (en) * | 1997-11-15 | 1999-11-30 | Hoffer Flow Controls, Inc. | Dual rotor flow meter |
| JP2002250646A (en) * | 2001-02-23 | 2002-09-06 | Nippon Grease Nipple Kk | Gearing for flow measurement |
| US20020166586A1 (en) * | 2001-05-11 | 2002-11-14 | Flavelle William D. | Fluid metering device |
| US20090120507A1 (en) * | 2007-11-14 | 2009-05-14 | Roper Pump Company | Fluid metering and pumping device |
| CN102927002A (en) * | 2012-12-04 | 2013-02-13 | 泸州众大科技液压件有限公司 | High-pressure gear pump |
| CN205619982U (en) * | 2016-05-18 | 2016-10-05 | 其胜威纳(上海)润滑设备有限公司 | Online flow detection device of high accuracy |
| CN206862416U (en) * | 2017-05-16 | 2018-01-09 | 威海坤科流量仪表股份有限公司 | A kind of fine liquid flowmeter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108591500A (en) * | 2018-07-18 | 2018-09-28 | 天津万枫仪表有限公司 | Special alloy regulating valve applied to high-pressure minimum flow working condition |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107044872B (en) | 2023-09-05 |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 264209 west one or two West of Weihai high tech District, Weihai, Shandong Province Applicant after: WEIHAI KUNKE FLOW METER CO.,LTD. Address before: No. 194, hi tech Development Zone, Weihai, Shandong Province Applicant before: WEIHAI KUNKE FLOW METER Co.,Ltd. |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |