CN209181851U - A kind of mini elliptic gear flowmeter of no machine driven system - Google Patents
A kind of mini elliptic gear flowmeter of no machine driven system Download PDFInfo
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- CN209181851U CN209181851U CN201920025354.XU CN201920025354U CN209181851U CN 209181851 U CN209181851 U CN 209181851U CN 201920025354 U CN201920025354 U CN 201920025354U CN 209181851 U CN209181851 U CN 209181851U
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- elliptic gear
- ontology
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Abstract
The utility model discloses a kind of mini elliptic gear flowmeters of no machine driven system, including ontology, front cover, the first elliptic gear, the first installation axle, the second elliptic gear, the second installation axle, two or more to transmit magnet, sensor, rear cover, electronic counter；First elliptic gear, the engagement of the second elliptic gear are placed in the cavity of ontology, and sensor is fixedly mounted on front cover, and the other end is embedded in electronic counter, and sensor connects electronic counter, and sensor is corresponding with the position that one of them transmits magnet.The utility model has the beneficial effects that structure is simple, size is small, light-weight, novel in appearance, measuring accuracy is high, range of flow is wide, being adapted to can be small to pipe diameter, the small occasion of range of flow, measuring accuracy can be widely applied to the various industries having higher requirements to measuring accuracy such as industrial chemicals proportion, food filling, mobile gas station up to 0.2 grade (error ± 0.2%).
Description
Technical field
The utility model relates to the miniature of a kind of oval gear flowmeter more particularly to a kind of no machine driven system
Oval gear flowmeter.
Background technique
Oval gear flowmeter (also known as discharge capacity flowmeter, gear meter) belongs to volumetric flowmeter one kind, in flow
It is the higher one kind of precision in instrument.It is continuously divided into fluid single known volume using mechanical measurement element
Part gradually, is repeatedly full of according to measuring room and discharges the number of the volume fractiion fluid come measuring flow volume total amount.
Traditional stainless steel oval gear flowmeter majority is passed using the mode that multistage Cylinder Gear train encrypts envelope shaft coupling
Pass flow information.Such flow transfer mode uses mechanical counter more, and structure is complicated, and movable member is more, and difficulty of processing is big,
It is not easy to later period maintenance.The resistance of motion of elliptic gear will increase after driving multi-stage gear and shaft coupling rotation, make flowmeter
It can not operate normally in the case where flow is smaller and the lower situation of pressure, to make the range of flow of flowmeter and accuracy class can not
(range of flow is 1:10 when precision is 0.5 grade, and range of flow is 1:5 when precision is 0.2 grade) is further increased, flowmeter is influenced
Performance.
In addition, the liquid conveying that traditional industrial flowmeter is directed to larger caliber (being greater than DN10) pipeline mostly is counted
Amount, never precision is higher and all lesser volumetric flow of structure and weight in terms of micro- small-bore pipeline liquid metering
Meter.The metering of most of micrometeor mostly uses liquid turbine flowmeter in market, and structure is relatively simple, but measuring accuracy is poor,
Error is generally ± 1%~± 1.5%.
Utility model content
Existing stream in above-mentioned background technique is solved the technical problem to be solved by the utility model is to provide a kind of
Meter is generally not suitable with the mini elliptic gear flowmeter of small bore and low precision.
The utility model is to solve above-mentioned technical problem by the following technical programs: the utility model is a kind of to be passed without machinery
The mini elliptic gear flowmeter of dynamic system, including ontology, front cover, the first elliptic gear, the first installation axle, the second oval tooth
Wheel, the second installation axle, two or more transmit magnet, sensor, rear cover, electronic counter；The ontology be built-in cavity,
Structure open at one end, two sides are equipped with the pipeline communicated with cavity, and the first elliptic gear, the second elliptic gear are placed in ontology
Cavity in, and be rotatably connected on the first installation axle respectively, in the second installation axle, the first installation axle, the second installation axle are fixed on
On ontology, the first elliptic gear, the second elliptic gear are able to respond the fluid in the pipeline of ontology two sides and rotate, and front cover connects
It connects in ontology front end, rear cover is connected to ontology rear end, and sensor is fixedly mounted in the one end connecting on front cover with ontology, and the other end is embedding
Enter electronic counter, sensor connects electronic counter, transmit magnet be circumferentially uniformly embedded in the first elliptic gear or
On the end face of second elliptic gear, sensor is corresponding with the position that one of them transmits magnet, adjacent to transmit magnet and sensor
Corresponding end magnetic pole is opposite.
Preferably, the ontology is cube structure, inside has waist type cavity, the pipeline of two sides is respectively liquid inlet
And liquid outlet.
Preferably, front cover is the structure equipped with stepped groove, and electronic counter, middle part installation are equipped in groove
There is sensor.
It preferably, further include two sealing elements, ontology both ends are equipped with seal channel, and sealing element is placed in seal channel, preceding
Lid is connected to ontology front end by bolt seal, and rear cover is connected to ontology rear end by bolt seal.
Preferably, further include graphite cover board, be socketed in the first installation axle, in the second installation axle, be clipped in the first elliptic gear,
Between second elliptic gear and body bottom portion.
Preferably, further include two axle sleeves, be socketed in the first installation axle, the second installation axle respectively.
Preferably, the axle sleeve is graphite bushing.
Preferably, the magnet that transmits is two, is spaced being mounted on the end face of the first elliptic gear for 180 degree.
The utility model has the advantage that its structure of the utility model is simple compared with prior art, and size is small, weight
Gently, novel in appearance, measuring accuracy are high, and range of flow is wide, can be DN6-DN10 to pipe diameter, and range of flow is 0.01~
0.3m3The various bores and flow of/h are measured, and measuring accuracy can be widely applied to up to 0.2 grade (error ± 0.2%)
The various industries having higher requirements to measuring accuracy such as industrial chemicals proportion, food filling, mobile gas station solve well
This not high industry problems of tiny flow quantity measuring accuracy of having determined.
Detailed description of the invention
Fig. 1 is a kind of structural representation of the mini elliptic gear flowmeter of no machine driven system of the utility model embodiment
Figure.
Figure label: ontology 1, sealing element 11, graphite cover board 12, front cover 2, the first elliptic gear 3, the first installation axle 31,
Second elliptic gear 4, transmits magnet 32, sensor 5, rear cover 6, electronic counter 7, axle sleeve 8 at second installation axle 41.
Specific embodiment
It elaborates below to the embodiments of the present invention, the present embodiment before being with technical solutions of the utility model
It puts and is implemented, the detailed implementation method and specific operation process are given, but the protection scope of the utility model is unlimited
In following embodiments.
As shown in Figure 1, a kind of mini elliptic gear flowmeter of no machine driven system of the present embodiment, including it is ontology 1, preceding
Lid 2, the first elliptic gear 3, the first installation axle 31, the second elliptic gear 4, the second installation axle 41, two or more transmit magnet
32, sensor 5, rear cover 6, electronic counter 7；The ontology 1 is built-in cavity, structure open at one end, and two sides are set
There is the pipeline communicated with cavity, the first elliptic gear 3, the second elliptic gear 4 are placed in the cavity of ontology 1, the first elliptic gear 3
It is engaged with the second elliptic gear 4, and is rotatably connected on the first installation axle 31 respectively, in the second installation axle 41, the first installation axle 31,
Second installation axle 41 is fixed on ontology 1, and the first elliptic gear 3, the second elliptic gear 4 are able to respond in 1 two sides of ontology
The fluid of pipeline and rotate, what front cover 2 can be dismantled be connected to 1 front end of ontology, rear cover 6 is connected to 1 rear end of ontology, on front cover 2
Sensor 5 is fixedly mounted in the one end connecting with ontology 1, and the other end is embedded in electronic counter 7, and sensor 5 is electrically connected electronics
The signal received can be sent to electronic counter 7 by formula counter 7, sensor 5, transmitted magnet 32 and circumferentially uniformly inlayed
On the end face of the first elliptic gear 3 or the second elliptic gear 4, in the present embodiment, the setting of magnet 32 is transmitted in the first ellipse
On gear 3, that is, it is in the elliptic gear of top, sensor 5 is corresponding with the position that one of them transmits magnet 32, the present embodiment
In, sensor 5 be below to transmit magnet 32 corresponding, it is adjacent that transmit magnet 32 opposite with the corresponding end magnetic pole of sensor 5.
In the present embodiment, the ontology 1 is cube structure, inside has waist type cavity, the pipeline of two sides is respectively liquid
Body entrance and liquid outlet, end face are equipped with the threaded hole connecting with front cover 2.
Front cover 2 is the structure equipped with stepped groove, and electronic counter 7 is equipped in groove, and middle part is equipped with biography
Sensor 5 offers bolt hole on the end face of its ladder, for corresponding with the threaded hole on ontology 1.
It further include two sealing elements 11 in the present embodiment, ontology both ends are equipped with seal channel, and sealing element 11 is placed in sealing element
In slot, front cover is connected to ontology front end by bolt seal, and rear cover is connected to ontology rear end by bolt seal, and sealing element 11 can
Select sealing ring in the prior art.
Further include graphite cover board 12 in the present embodiment, is socketed in the first installation axle 31, in the second installation axle 41, is clipped in
Between 1 bottom of one elliptic gear 3, the second elliptic gear 4 and ontology, lubricating action can be played.
Further include two axle sleeves 8 in the present embodiment, the first installation axle 31, the second installation axle 41 is socketed in respectively, with first
Installation axle 31,41 clearance fit of the second installation axle are interference fitted, the axle sleeve 8 with the first elliptic gear 3, the second elliptic gear 4
For graphite bushing.
In the present embodiment, the magnet 32 that transmits is two, is spaced the end face for being mounted on the first elliptic gear 3 of 180 degree
On, elliptic gear can produce two flow signals for each revolution, and the sensor 5 in the present embodiment can also use hall sensing
Device.
The course of work of the utility model is as follows:
Inlay that there are two magnetic opposite to transmit magnet 32 in the end face two sides of the first elliptic gear 3, when there is liquid in pipeline
When body flows, the first elliptic gear 3 and the rotation of the second elliptic gear 4 will push, to transmit magnet 32 successively by front cover 2
The lower section of sensor 5, to generate flow signal, the present embodiment only has resistance when a pair of of elliptic gear itself rotates, anodontia
Resistance when train transmission system and shaft coupling rotate, to make flowmeter under minimum flow and extremely low pressure condition
It can run well, which greatly enhances the range of flow of flowmeter and measuring accuracies.
And the shape of the present embodiment be it is rectangular, length, width and height only have 60mm, 60mm, 65mm, and weight 0.5Kg uses micro energy lose
Electronic counter, counter are directly mounted inside front cover 2, integrated signal sensor in counter, and No. 5 batteries can be used certainly
Powering mode, display is instantaneous and integrated flux, battery are 2 years, and flowmeter integrally uses modularized design,
Part installation, replacement are convenient.
A kind of processing method for processing the mini elliptic gear flowmeter without machine driven system is also disclosed in the utility model,
Specific step is as follows:
(1) front cover 2, rear cover 6, ontology 1, the first elliptic gear 3, the second elliptic gear 4, the first installation axle are processed respectively
31, the second installation axle 41；
The processing of front cover 2, rear cover 6, ontology 1: carrying out three-dimensional modeling by Three-dimensional CAD Software first, recycles CAM technology,
Mold processing program is automatically generated by three-dimensional software, processing investment casting mold by CNC numerical control machining center, (model casting is again
Claim lost-wax casting, including presses wax, repair wax, group tree, be stained with the processes such as slurry, dewaxing, casting metals liquid and post-processing；Lost-wax casting is to use
The waxed wax-pattern for making the part cast, is then coated with mud on wax-pattern, here it is mud moulds；After mud mould is dried, it is put into hot water
Internal wax-pattern is melted；The mud mould for having melted wax-pattern taking-up is fired into Tao Mo again；It has been left with sprue gate when general mud mould processed,
Molten metal is poured into from sprue gate again, after cooling, required part is made, the part blank surface cast out using the method
Quality is preferable, accurate size), it reuses investment casting and casts out blank.
After the completion of casting, front cover 2, rear cover 6, ontology 1 are finished respectively by CNC machining center.
The finishing of front cover 2: milling pin is carried out to plane with face milling cutters by machining center first, processes sealing surface and benchmark
Plane；Secondary clamping is carried out after the completion of plane machining, with helical bevel cutter counter mounting groove, sensor location hole and front cover
Bolt hole；After the removal of piece surface burr, complete the process.
The finishing of ontology 1: milling pin is carried out to plane with face milling cutters by machining center first, processes sealing surface and benchmark
Plane；After the completion of plane machining, elliptic gear mounting hole bottom surface and side wall are finished with boring cutter；With centre drill to axis hole
Axis hole is finished with boring cutter again after carrying out roughing；With helical bevel cutter seal groove；With fluted drill thread mill drilling；Use screw tap
Process internal screw thread.Overlap, the burr in process are removed, is completed the process.
The finishing of rear cover 6: carrying out milling pin to plane with face milling cutters by machining center, processes sealing surface and benchmark is flat
Face；Secondary clamping is carried out after the completion of plane machining, goes out connecting hole with helical bevel cutter.
The processing of first elliptic gear 3, the second elliptic gear 4: this part first casts out blank with investment casting；By counting
Control machining center right boring goes out center positioning hole；By the calculating to elliptic gear, the distribution angle of the elliptic gear gear teeth is calculated,
Digital control gear shaper is imported after recycling Numerical Control Programming Software to compile processing program, by the gear shaping machining gear teeth；Gear teeth processing
After the completion, elliptic gear outer circle and plane are finished by numerically controlled lathe；After the burr for removing surface, complete the process.
The processing of first installation axle 31, the second installation axle 41: pole is first cut into length and the identical stick of part length
Material；Roughing outer circle is carried out to pole by numerically controlled lathe, reserves mill pin surplus；Carry out mill pin finishing to foreign round by grinding machine.
(2) each part is assembled, the first installation axle 31, the second installation axle 41 is fixed on the body, then by first
The cavity that elliptic gear 3, the second elliptic gear 4 are socketed in the first installation axle 31 respectively, are placed in ontology 1 in the second installation axle 41
It is interior, magnet 32 will be transmitted and be mounted to 4 end of the first elliptic gear 3 or the second elliptic gear, by front cover 2, rear cover 6 respectively with fixation
In the front and rear end of ontology 1.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (8)
1. a kind of mini elliptic gear flowmeter of no machine driven system, which is characterized in that including ontology, front cover, first ellipse
Knucle-gear, the first installation axle, the second elliptic gear, the second installation axle, two or more transmit magnet, sensor, rear cover, electronics
Formula counter；The ontology is built-in cavity, structure open at one end, and two sides are equipped with the pipeline that communicates with cavity, first
Elliptic gear, the second elliptic gear are placed in the cavity of ontology, and are rotatably connected on the first installation axle, the second installation axle respectively
On, the first installation axle, the second installation axle are fixed, and the first elliptic gear is engaged with the second elliptic gear on the body, front cover connection
In ontology front end, rear cover is connected to ontology rear end, and sensor, other end insertion is fixedly mounted in the one end connecting on front cover with ontology
Electronic counter, sensor connect electronic counter, transmit magnet and are circumferentially uniformly embedded in the first elliptic gear or the
On the end face of two elliptic gears, sensor is corresponding with the position that one of them transmits magnet, adjacent to transmit magnet and sensor pair
The end magnetic pole answered is opposite.
2. a kind of mini elliptic gear flowmeter of no machine driven system according to claim 1, which is characterized in that institute
Stating ontology is cube structure, inside has waist type cavity, the pipeline of two sides is respectively liquid inlet and liquid outlet.
3. a kind of mini elliptic gear flowmeter of no machine driven system according to claim 1, which is characterized in that preceding
Lid is the structure equipped with stepped groove, and electronic counter is equipped in groove, and middle part is equipped with sensor.
4. a kind of mini elliptic gear flowmeter of no machine driven system according to claim 1, which is characterized in that also
Including two sealing elements, ontology both ends are equipped with seal channel, and sealing element is placed in seal channel, and front cover is connected by bolt seal
In ontology front end, rear cover is connected to ontology rear end by bolt seal.
5. a kind of mini elliptic gear flowmeter of no machine driven system according to claim 1, which is characterized in that also
Including graphite cover board, be socketed in the first installation axle, in the second installation axle, be clipped in the first elliptic gear, the second elliptic gear and this
Between body bottom.
6. a kind of mini elliptic gear flowmeter of no machine driven system according to claim 1, which is characterized in that also
Including two axle sleeves, it is socketed in the first installation axle, the second installation axle respectively.
7. a kind of mini elliptic gear flowmeter of no machine driven system according to claim 6, which is characterized in that institute
Stating axle sleeve is graphite bushing.
8. a kind of mini elliptic gear flowmeter of no machine driven system according to claim 1, which is characterized in that institute
Stating and transmitting magnet is two, is spaced being mounted on the end face of the first elliptic gear for 180 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920025354.XU CN209181851U (en) | 2019-01-02 | 2019-01-02 | A kind of mini elliptic gear flowmeter of no machine driven system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920025354.XU CN209181851U (en) | 2019-01-02 | 2019-01-02 | A kind of mini elliptic gear flowmeter of no machine driven system |
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| CN209181851U true CN209181851U (en) | 2019-07-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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- 2019-01-02 CN CN201920025354.XU patent/CN209181851U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A micro elliptical gear flowmeter without mechanical transmission system Effective date of registration: 20200927 Granted publication date: 20190730 Pledgee: Feihe road sub branch of Hefei Science and Technology Rural Commercial Bank Co., Ltd Pledgor: ANHUI TIANWEI INSTRUMENT Co.,Ltd. Registration number: Y2020980006490 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |