CN109520581A - A kind of the mini elliptic gear flowmeter and processing method of no machine driven system - Google Patents
A kind of the mini elliptic gear flowmeter and processing method of no machine driven system Download PDFInfo
- Publication number
- CN109520581A CN109520581A CN201910002540.6A CN201910002540A CN109520581A CN 109520581 A CN109520581 A CN 109520581A CN 201910002540 A CN201910002540 A CN 201910002540A CN 109520581 A CN109520581 A CN 109520581A
- Authority
- CN
- China
- Prior art keywords
- elliptic gear
- installation axle
- ontology
- mini
- sensor
- 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.)
- Pending
Links
- 238000003672 processing method Methods 0.000 title claims abstract description 9
- 238000009434 installation Methods 0.000 claims abstract description 56
- 238000007789 sealing Methods 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 11
- 238000012545 processing Methods 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 229910002804 graphite Inorganic materials 0.000 claims description 7
- 239000010439 graphite Substances 0.000 claims description 7
- 238000003780 insertion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 239000003317 industrial substance Substances 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 14
- 230000008569 process Effects 0.000 description 10
- 238000003801 milling Methods 0.000 description 6
- 238000005495 investment casting Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 238000003754 machining Methods 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 241001014327 Anodontia Species 0.000 description 1
- 206010002583 anodontia Diseases 0.000 description 1
- 230000005212 anodontia Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000010862 gear shaping Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000010903 husk Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000011326 mechanical measurement Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F11/00—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it
- G01F11/28—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with stationary measuring chambers having constant volume during measurement
- G01F11/42—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with stationary measuring chambers having constant volume during measurement with supply or discharge valves of the rotary or oscillatory type
- G01F11/44—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with stationary measuring chambers having constant volume during measurement with supply or discharge valves of the rotary or oscillatory type for liquid or semiliquid
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention discloses a kind of mini elliptic gear flowmeter of no machine driven system and processing methods, 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.Beneficial effects of the present invention: 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 present invention relates to a kind of oval gear flowmeter and its processing method more particularly to a kind of no mechanical drive trains
The mini elliptic gear flowmeter and processing method of system.
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%.
Summary of the invention
Technical problem to be solved by the present invention lies in provide a kind of to solve existing flowmeter in above-mentioned background technique
Generally it is not suitable with the mini elliptic gear flowmeter and its processing method of small bore and low precision.
The present invention is to solve above-mentioned technical problem by the following technical programs: a kind of no machine driven system of the present invention
Mini elliptic gear flowmeter, including ontology, front cover, the first elliptic gear, the first installation axle, the second elliptic gear, the second peace
Dress axis, two or more transmit magnet, sensor, rear cover, electronic counter；The ontology is built-in cavity, open at one end
Structure, two sides are equipped with the pipeline that communicates with cavity, and the first elliptic gear, the second elliptic gear are placed in the cavity of ontology
It is interior, and it is rotatably connected on the first installation axle respectively, in the second installation axle, the first installation axle, the second installation axle are fixed on the body,
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 is connected to this
Body front end, rear cover are 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 embedded in electronics
Formula counter, sensor connect electronic counter, transmit magnet and are circumferentially uniformly embedded in the first elliptic gear or second ellipse
On the end face of Knucle-gear, sensor is corresponding with the position that one of them transmits magnet, and adjacent to transmit magnet corresponding with sensor
Hold magnetic pole 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.
Invention additionally discloses a kind of processing methods for processing the mini elliptic gear flowmeter without machine driven system, specifically
Steps are as follows:
(1) front cover, rear cover, ontology, the first elliptic gear, the second elliptic gear, the first installation axle, the second peace are processed respectively
Fill axis；
(2) each part is assembled, it is the first installation axle, the second installation axle is fixed on the body then oval by first
Gear, the second elliptic gear are socketed in the first installation axle respectively, are placed in the cavity of ontology in the second installation axle, will transmit magnetic
Iron is mounted to the first elliptic gear or the second elliptic gear end, by front cover, rear cover respectively be fixed on the front end of ontology with after
End.
The present invention has the advantage that its structure of the invention is simple compared with prior art, and size is small, light-weight, shape is new
Grain husk, measuring accuracy is high, and range of flow is wide, can be DN6-DN10 to pipe diameter, and range of flow is 0.01~0.3m3/ h's is various
Bore and flow are measured, measuring accuracy up to 0.2 grade (error ± 0.2%), can be widely applied to industrial chemicals proportion,
The various industries having higher requirements to measuring accuracy such as food filling, mobile gas station, very good solution tiny flow quantity
This not high industry problems of measuring accuracy.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the mini elliptic gear flowmeter of no machine driven system of the embodiment of the present invention.
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 embodiment of the present invention, the present embodiment carries out under the premise of the technical scheme of the present invention
Implement, the detailed implementation method and specific operation process are given, but protection scope of the present invention is not limited to following implementation
Example.
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 invention 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.
Invention additionally discloses a kind of processing methods for processing the mini elliptic gear flowmeter without machine driven system, specifically
Steps are 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 foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (9)
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.
9. a kind of processing method of the mini elliptic gear flowmeter without machine driven system described in processing claim 1, special
Sign is, the specific steps are as follows:
(1) front cover, rear cover, ontology, the first elliptic gear, the second elliptic gear, the first installation axle, the second installation are processed respectively
Axis；
(2) each part is assembled, the first installation axle, the second installation axle is fixed on the body, then by the first elliptic gear,
Second elliptic gear is socketed in the first installation axle respectively, is placed in the cavity of ontology in the second installation axle, will transmit magnet edge
Be embedded into the first elliptic gear or the second elliptic gear end, by front cover, rear cover respectively with the front and rear end that is fixed on ontology.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910002540.6A CN109520581A (en) | 2019-01-02 | 2019-01-02 | A kind of the mini elliptic gear flowmeter and processing method of no machine driven system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910002540.6A CN109520581A (en) | 2019-01-02 | 2019-01-02 | A kind of the mini elliptic gear flowmeter and processing method of no machine driven system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109520581A true CN109520581A (en) | 2019-03-26 |
Family
ID=65798425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910002540.6A Pending CN109520581A (en) | 2019-01-02 | 2019-01-02 | A kind of the mini elliptic gear flowmeter and processing method of no machine driven system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109520581A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080202255A1 (en) * | 2005-06-08 | 2008-08-28 | Ecolab Inc. | Oval Gear Meter |
| CN201163203Y (en) * | 2007-10-10 | 2008-12-10 | 合肥精大仪表股份有限公司 | Light elliptic gear flowmeter |
| CN202382789U (en) * | 2011-12-13 | 2012-08-15 | 合肥精大仪表股份有限公司 | Oval gear flowmeter |
| CN204479107U (en) * | 2015-03-24 | 2015-07-15 | 东台市仪表厂 | Long-life elliptic rotor flowmeter |
| CN209181851U (en) * | 2019-01-02 | 2019-07-30 | 安徽天维仪表有限公司 | A kind of mini elliptic gear flowmeter of no machine driven system |
-
2019
- 2019-01-02 CN CN201910002540.6A patent/CN109520581A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080202255A1 (en) * | 2005-06-08 | 2008-08-28 | Ecolab Inc. | Oval Gear Meter |
| CN201163203Y (en) * | 2007-10-10 | 2008-12-10 | 合肥精大仪表股份有限公司 | Light elliptic gear flowmeter |
| CN202382789U (en) * | 2011-12-13 | 2012-08-15 | 合肥精大仪表股份有限公司 | Oval gear flowmeter |
| CN204479107U (en) * | 2015-03-24 | 2015-07-15 | 东台市仪表厂 | Long-life elliptic rotor flowmeter |
| CN209181851U (en) * | 2019-01-02 | 2019-07-30 | 安徽天维仪表有限公司 | A kind of mini elliptic gear flowmeter of no machine driven system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS61113441A (en) | Apparatus and method for finishing dental repairing materialadapted to indivisual patient as usable molded body | |
| CN209181851U (en) | A kind of mini elliptic gear flowmeter of no machine driven system | |
| CN209181850U (en) | A kind of small-sized oval gear flowmeter of no machine driven system | |
| CN109520581A (en) | A kind of the mini elliptic gear flowmeter and processing method of no machine driven system | |
| CN201376094Y (en) | Machining-center main-shaft side edge high-pressure water output structure | |
| CN109520580A (en) | A kind of small-sized oval gear flowmeter and processing method of no machine driven system | |
| CN104373405B (en) | Servo valve body and machining method of servo valve body | |
| CN101920362B (en) | Method for machining normal straight profile cylindrical worm by using horizontal lathe | |
| CN102589621A (en) | Impeller of high-precision rotor type flow transducer and working method of impeller | |
| CN206839672U (en) | The special machine tool that a kind of crystallizer copper pipe embedded SMA actuators use | |
| CN213932660U (en) | Small-metering explosion-proof flowmeter | |
| CN112757048B (en) | Positioning device for central axis of impeller of steam turbine rotor | |
| CN110480045A (en) | A kind of mold through-hole aperture expansion processing method | |
| CN220018622U (en) | Double-screw flowmeter | |
| CN217786266U (en) | Oval gear measuring, shaping and metering device for lubrication metering | |
| CN207362067U (en) | A kind of practical High-speed Computer number control glass-cutting head | |
| CN207578022U (en) | A kind of wheel hub milling punch | |
| CN209621615U (en) | A kind of composite rotors and the injection mold for producing the rotor | |
| CN202382789U (en) | Oval gear flowmeter | |
| CN102151845A (en) | Method for forming hydraulic valve | |
| CN219842008U (en) | High-precision water flow metering device | |
| CN109115239B (en) | Odometer sensor gear ring and manufacturing method thereof | |
| CN201795153U (en) | Hydraulic butterfly valve online monitor | |
| CN101249624B (en) | Curved face type sliding tackle plate | |
| CN207540599U (en) | A kind of gas Roots flow meter with wireless transmitting system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |