CN2210386Y - Flow meter with kidney shaped teeth gear - Google Patents
Flow meter with kidney shaped teeth gear Download PDFInfo
- Publication number
- CN2210386Y CN2210386Y CN 94220184 CN94220184U CN2210386Y CN 2210386 Y CN2210386 Y CN 2210386Y CN 94220184 CN94220184 CN 94220184 CN 94220184 U CN94220184 U CN 94220184U CN 2210386 Y CN2210386 Y CN 2210386Y
- Authority
- CN
- China
- Prior art keywords
- waist
- utility
- model
- gear
- flowmeter
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Measuring Volume Flow (AREA)
Abstract
The utility model relates to a flow meter with kidney-shaped teeth gears, which belongs to a volumetric liquid flow meter. The utility model is composed of a metering box and a pair of kidney-shaped teeth gears which are mutually engaged and are arranged in the metering box. Because the teeth gears adopts a kidney-shaped structure, the stressed area of the teeth gears is enlarged and the acting force arm of the teeth gears is also enlarged, which enhances the sensitivity and the metering accuracy of the utility model. The utility model can show superiority in the processes of small pressuredifference and small flow metering. In the meantime, the volume and the weight of the utility model is smaller and lighter than that of a fine round flow meter with teeth meters. The utility model is suitable for oiling machines and other flow metering devices.
Description
The waist generating gear flowmeter that the utility model is alleged belongs to the positive displacement liquid flow-meter.
The positive displacement liquid flowmeter that uses mainly contains oval gear flowmeter and Roots type flowmeter at present, oval gear flowmeter is that a pair of intermeshing elliptic gear is housed in batch meter, liquid is by the inlet input, under the effect of inlet outlet pressure differential, the promotion elliptic gear rotates, make liquid from outlet output,, can determine the numerical value of fluid flow by measuring the revolution of elliptic gear.Oval gear flowmeter is simple in structure, price is lower, is used widely.Its shortcoming is that measuring accuracy is low, accumulated error big (being ± 0.5%), and sensitivity is low when the metering low discharge.Roots type flowmeter is a pair of Roots to be housed take turns rotor in batch meter, and two Roots's wheel surfaces are smooth, and are in contact with one another, and principle of work is identical with oval gear flowmeter.Because the Roots type flowmeter rotor surface is smooth, must measure rotating speed and flow by meshed gears.The Roots type flowmeter complex structure, highly sensitive, volume is big, but measuring accuracy is low.
It is low that the alleged waist generating gear flowmeter of the utility model is to overcome above-mentioned two kinds of volumeter precision, especially overcomes the low shortcoming of measuring accuracy when the small pressure difference low discharge.
The waist type gear meter that the utility model is alleged is made up of with the non-circular gear of a pair of relative engagement in being installed in batch meter batch meter.This is a pair of waist generating gear to non-circular gear.The utmost point of the long axis direction of waist generating gear directly is a convex curve, and the utmost point of short-axis direction (waist) directly is a concave curve.The polar coordinates equation in the waist generating gear utmost point footpath of waist generating gear flowmeter is:
ρ＝ (a(1-e
2))/(1+ecos20)
ρ in the formula-utmost point footpath, 2a-two-wheeled centre distance, θ-polar angle, the span of e-calculating parameter e is 0.3＜e≤0.5.E is value in this scope, both can guarantee that the gear waist is a concave curve, guarantees that again the gear number of teeth is the integer tooth.
The profile of tooth of waist generating gear is the involute urve straight-tooth, and machine-shaping on numerically-controlled machine.
The material of waist generating gear is metal, wear-resisting, anti-corrosion nonmetallic materials and macromolecular material.
The waist generating gear flowmeter that the utility model is alleged, owing to adopt the waist generating gear, waist is a spill, the area of gear liquid body acting force increases, owing to adopt the waist generating gear, the resultant direction of liquid effects on gear changes, the arm of force that gear is rotated increases, so just make flowmeter under the very little situation of inlet outlet pressure differential, gear is rotated, improved flowmeter sensitivity and measuring accuracy.Adopt the waist generating gear, the volume of flowmeter batch meter is increased, under the situation of same metered flow, can make the volume of flowmeter reduce weight saving, this waist generating gear flow uses in fuel charger, highly sensitive, the precision height is so it can be used to not have electricity and the frequent area that has a power failure, this flowmeter can promote the rotation of waist generating gear and measure when liquid level difference 0.02Mpa.
The turnover bore value of waist generating gear flowmeter is 20,25,40,50,80(mm), flow range is 0.15～60m
3/ h, minimum working pressure power is 0.02Mpa, through 1000 waist generating gear flowmeters are detected, once shows measuring accuracy, accumulated error is ± 0.1～0.2%.
Description of drawings:
Accompanying drawing is a waist generating gear flowmeter structure sketch.
Among the figure: the 1-batch meter; 2-waist generating gear;
ρ-utmost point footpath; 2a-two-wheeled centre distance (0102 length along path); θ-polar angle.
Embodiment:
This enforcement is novel to be that bore is the waist generating gear flowmeter of 20mm.Waist generating gear facewidth 50mm, modulus 0.6mm, the number of teeth 54, major axis pitch diameter 42.35mm, minor axis pitch diameter 18.13mm, centre distance 2a=30.24mm, e=0.4,20 ° of pressure angles adopt the alloy aluminum material, surfaceness
Flow range is 0.15～6m
3/ h, accumulated error is ± 0.1～0.2%, the waist generating gear flowmeter of bore 20mm is that the volume of the essence circle flowmeter of 20mm reduces 30%, weight saving 20% than bore.
Claims (2)
1, waist generating gear flowmeter, it is made up of batch meter and a pair of intermeshing non-circular gear that is installed in the batch meter, it is characterized in that said intermeshing non-circular gear is the waist generating gear.
2, by the said waist generating gear of claim 1 flowmeter, it is characterized in that said waist generating gear, the utmost point of its long axis direction directly is a convex curve, and the utmost point of its short-axis direction (waist) directly is a concave curve, and the calculating parameter e value scope in waist generating gear utmost point footpath is: 0.3＜e≤0.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94220184 CN2210386Y (en) | 1994-08-18 | 1994-08-18 | Flow meter with kidney shaped teeth gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94220184 CN2210386Y (en) | 1994-08-18 | 1994-08-18 | Flow meter with kidney shaped teeth gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2210386Y true CN2210386Y (en) | 1995-10-18 |
Family
ID=33834844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94220184 Expired - Fee Related CN2210386Y (en) | 1994-08-18 | 1994-08-18 | Flow meter with kidney shaped teeth gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2210386Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1324307C (en) * | 2003-06-24 | 2007-07-04 | 株式会社奥巴尔 | Non round gear and volumetric flowmeter using same |
| CN111750949A (en) * | 2020-07-07 | 2020-10-09 | 河南航天液压气动技术有限公司 | Two-dimensional bidirectional flowmeter |
-
1994
- 1994-08-18 CN CN 94220184 patent/CN2210386Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1324307C (en) * | 2003-06-24 | 2007-07-04 | 株式会社奥巴尔 | Non round gear and volumetric flowmeter using same |
| CN111750949A (en) * | 2020-07-07 | 2020-10-09 | 河南航天液压气动技术有限公司 | Two-dimensional bidirectional flowmeter |
| CN111750949B (en) * | 2020-07-07 | 2022-03-08 | 河南航天液压气动技术有限公司 | Two-dimensional bidirectional flowmeter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8312785B2 (en) | Involute gear teeth for fluid metering device | |
| CN2210386Y (en) | Flow meter with kidney shaped teeth gear | |
| US20030175141A1 (en) | Wave tooth gears using identical non-circular conjugating pitch curves | |
| CN113654608B (en) | Working method of anti-vibration double-helix Roots wheel gas Roots flowmeter with temperature and pressure compensation | |
| CN201163203Y (en) | Light elliptic gear flowmeter | |
| JP3827655B2 (en) | Volumetric flow meter using non-circular gear and non-circular gear | |
| CN101042301A (en) | 3-teeth double-rotor flowmeter | |
| CN102589621A (en) | Impeller of high-precision rotor type flow transducer and working method of impeller | |
| CN101672668B (en) | Dual-rotor mechanical flow sensor and operating method thereof | |
| CN212320797U (en) | Torque flow meter | |
| CN112325951B (en) | Three-rotor pulsation-free positive displacement flowmeter | |
| CN201034641Y (en) | Direct type impeller gage table | |
| CN111486905A (en) | Torque flow meter | |
| CN101033994A (en) | Double circular arcs rotor flowmeter | |
| JP3620997B2 (en) | Improvement of non-circular gear and non-circular gear type flow meter using the same | |
| CN210893277U (en) | Triangular rotor flowmeter | |
| CN2886510Y (en) | Three-tooth dual-rotor gas flowmeter | |
| CN104568021A (en) | Three-screw-rod flow meter | |
| CN2747551Y (en) | Eccentrical single rotor type measuring mechanism for flow meter | |
| CN2522831Y (en) | High-sensitivity cold-water meter | |
| CN2226278Y (en) | Bidirectional pour plug type micro-flow meter | |
| CN1153903A (en) | Positive displacement flowmeter | |
| CN219624821U (en) | Torque flowmeter | |
| CN216815621U (en) | Forward and reverse rotation metering water meter | |
| CN208795308U (en) | A kind of inner casing of Roots type flowmeter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |