CN108955795A - A kind of twin-screw rotor molded line and the double-screw type flowmeter based on the molded line - Google Patents
A kind of twin-screw rotor molded line and the double-screw type flowmeter based on the molded line Download PDFInfo
- Publication number
- CN108955795A CN108955795A CN201810909165.9A CN201810909165A CN108955795A CN 108955795 A CN108955795 A CN 108955795A CN 201810909165 A CN201810909165 A CN 201810909165A CN 108955795 A CN108955795 A CN 108955795A
- Authority
- CN
- China
- Prior art keywords
- screw
- rotor
- molded line
- twin
- subordinate
- 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.)
- Granted
Links
- 125000002619 bicyclic group Chemical group 0.000 claims abstract description 9
- 239000012530 fluid Substances 0.000 claims description 7
- 230000004323 axial length Effects 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 210000003781 tooth socket Anatomy 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
- 238000012360 testing method Methods 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
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention discloses a kind of twin-screw rotor molded line, including intermeshing driving screw molded lines of rotor, from screw rotor molded line, its main feature is that: the end face of the driving screw molded lines of rotor is the two flute profile end faces symmetrical along 180 degree, described from the end face of screw rotor molded line is the 120 degree of equally distributed three flute profile end faces in interval, and the driving screw flute profile line is matched with from the tooth valley line between adjacent two tooth of screw rod；A kind of double-screw type flowmeter based on a kind of twin-screw rotor molded line described in claim 1 is also disclosed, including a pair of intermeshing principal and subordinate's screw rotor, the bearing for being separately mounted to principal and subordinate's two ends of rotor, ladder-like bicyclic bearing pressure ring, cylindrical housings, the sensor module being embedded among shell and the flange end cap at cylindrical housings both ends being set in principal and subordinate's screw rotor bearings at both ends.Screw flowmeter structure of the present invention is simple and compact, few easy workout part, precision height (± 0.1%), easy to process, and area utilization factor is big, dynamic balancing effect is good.
Description
Technical field
It is double the invention belongs to measuring instrument technical field more particularly to a kind of twin-screw rotor molded line and based on the molded line
Screw flowmeter.
Background technique
Metering is industrial eyes.Flow measurement is one of the component part of measuring science technology, it and its people pass through
Ji, national defense construction, scientific research have close relationship.High performance flowmeter, to guarantee product quality, improve production efficiency,
The development for the technology that advances science all plays an important role, especially energy crisis, industrial production automation degree more and more
High current era, status of the flowmeter in national economy and effect are more obvious.
As fluid machinery equipment is extended towards broader application field, the physical property and fluid machinery of fluid media (medium)
Operating condition also become increasingly complex, for example range of viscosities is more and more wider, and operating pressure is higher and higher, and the requirement to flowmeter is also more next
It is higher.The fluid viscosity ranges that traditional spinner flowmeter is capable of measuring are limited, and when viscosity is excessively high, it is normal to be unable to drive rotor
Work.
Summary of the invention
In view of the problems of the existing technology the present invention, proposes a kind of twin-screw rotor molded line and double spiral shells based on the molded line
Rod-type flowmeter, it is therefore intended that can be realized the flow rate test of larger range of viscosities fluid.
A kind of twin-screw rotor molded line, including intermeshing driving screw molded lines of rotor, from screw rotor molded line, feature
Be: the end face of the driving screw molded lines of rotor is the two flute profile end faces symmetrical along 180 degree, described from screw rotor molded line
End face is the 120 degree of equally distributed three flute profile end faces in interval, the driving screw flute profile line with from the tooth between adjacent two tooth of screw rod
Valley line matches.
The flute profile line of 180 symmetrical two teeth is connected by the circular arc on tip circle with the circular arc both ends respectively on the driving screw
The cycloid composition of concentric root circle.
120 degree of equally distributed three teeth from screw rod, the tooth valley line between adjacent two tooth is by symmetrical
Circular arc composition among straight line repairing type line segment, symmetrical cycloid and two cycloids, the circular arc are the circular arc on root circle, root
Round and tip circle is concentric circles.
It is described from screw rod cycloid section equation are as follows:
A kind of double-screw type flowmeter of twin-screw rotor molded line, its main feature is that: turn including a pair of intermeshing principal and subordinate's screw rod
Son, be separately mounted to principal and subordinate's two ends of rotor bearing, be set in it is ladder-like bicyclic in principal and subordinate's screw rotor bearings at both ends
Bearing pressure ring, cylindrical housings, the sensor module in the radial hole that is embedded among shell corresponding to driven screw rotor,
And the flange end cap at cylindrical housings both ends.
The flange end cap at the cylindrical housings both ends is respectively provided with a hole, as the entrance and exit of flowmeter, fluid
Into after the flowmeter entrance, master and slave screw rotor intermeshing rotation, periodical landform are pushed by peripheral force and axial force
At enclosed volume chamber, the discharge capacity of every turn of discharge is constant.
The axial length for being smaller than driving screw rotor from the axial length of screw rotor, to realize principal and subordinate's screw rod two
The bearing at end axially arranged in dislocation, the center of principal and subordinate's screw rod is away from center when being equal to the engagement of principal and subordinate's screw rod after arranged in dislocation
Radial stacking away from, the bearing at principal and subordinate's screw rod both ends, the depth that radial stacking depth is engaged with principal and subordinate's screw gear matches.
The ladder-like bicyclic bearing pressure ring connected in the same plane by relatively thick pressure ring and relatively thin pressure ring and
At relatively thick pressure ring is set on the relatively short bearing from rotor, and relatively thin pressure ring is sleeved on relatively long master
On the bearing of rotor, the sensor module is hall sensor component, measures screw rod by hall sensor component and turns
The revolution of son, so that it may the accurate flow output for obtaining screw rod flowmeter.
Advantages of the present invention effect
1, screw flowmeter structure of the present invention is simple and compact, few easy workout part, precision height (± 0.1%), easy to process, area benefit
With coefficient is big, dynamic balancing effect is good, it is still able to maintain preferable working performance in high pressure and high dielectric viscosity, can be widely applied
In the high-end equipment field such as petrochemical industry, aerospace, engineering machinery.
2, screw flowmeter is hardly viscosity-limited, and can be worked normally in great range of viscosities, and glue
Degree is higher, and measuring accuracy is higher.Screw flowmeter is not limited by flow field velocity, as long as inlet and outlet have certain pressure difference, i.e.,
Keep flowing velocity very low, can also lead-screw rotor rotation, to realize flow measurement.
Detailed description of the invention
Fig. 1 is the axial section of screw flowmeter of the present invention；
Fig. 2 is the master and slave screw rotor molded line of screw rod flowmeter of the present invention；
Fig. 3 is that the master and slave screw rotor of screw rod flowmeter of the present invention engages perspective view；
Fig. 4 is screw rotor bearing pressure ring structure chart of the present invention；
Fig. 5 is inventive flow flowmeter sensor installation diagram.
Fig. 6 is the cycloid schematic diagram one of disclosed K1 to K72.
Fig. 7 is disclosed bidentate double flute cycloid schematic diagram two.
In figure, 1- hexagon socket cap head screw；2-O type rubber seal；3- shell；4- sensor base；Hexagonal in 5-
Fillister head screw；6- sensor module；The O-shaped rubber seal of 7-；8- driven screw rotor；9- deep groove ball bearing；10- elasticity
Retaining ring；11- flange end cap；12- driving screw rod rotor；13- deep groove ball bearing；14- circlip；The ladder-like bicyclic bearing of 15-
Pressure ring.
Specific embodiment
Design principle of the present invention
The number of teeth of principal and subordinate's bar 2,3 matches, and is mainly based upon considered below:
1. gullet depth is suitable for, facilitate processing.Cycloid equation determines: the line number of teeth is more, and tooth socket is more shallow, otherwise the number of teeth is fewer, then
Tooth socket is deeper, as shown in fig. 6,8 cycloid figures altogether, schemes from first figure to last one, the number of teeth from K=1 to K=72, in figure
Cusp be tooth socket, the cusp distance center point of first figure is nearest, and the cusp distance center point of the last one figure is farthest,
According to this principle of cycloid, from the tooth socket of bar cannot very little can not be too many, then tooth socket deep processing is inconvenient very little, too much then tooth
It is unstable when slot shallowly engages.Therefore, the depth requirements of tooth socket are suitable for the number of teeth proportion for being set as principal and subordinate's bar 2:3.
2. the number of teeth as configures for cycloidal tooth profile, principal and subordinate's bar can be designed to have the same diameter, make to tie
Structure has good equilibrium response.This point is also to be determined by the principle of cycloid.Find out from a figure of Fig. 7, when the tooth of mobile jib
It is certain different with the diameter of mobile jib from the diameter of bar when counting, is equal from the slot number of bar, it is less than mobile jib diameter from shank diameter, due to
Diameter is different, wants poor when stability diameter group is identical when principal and subordinate's bar engages, and therefore, guarantees in order to which the diameter of principal and subordinate's bar is identical good
Balance, the number of teeth and slot number of principal and subordinate's bar cannot be equal, thus using principal and subordinate's bar 2:3 the number of teeth match.
Based on principles above, the present invention devises a kind of twin-screw rotor molded line.
A kind of twin-screw rotor molded line is as shown in Figure 2 and Figure 3, including intermeshing driving screw molded lines of rotor, from screw rod turn
Subtype line, its main feature is that: the end face of the driving screw molded lines of rotor be the two flute profile end faces symmetrical along 180 degree, it is described from
The end face of screw rotor molded line is the 120 degree of equally distributed three flute profile end faces in interval, the driving screw flute profile line with from screw rod phase
Tooth valley line between adjacent two teeth matches.
The flute profile line of 180 symmetrical two teeth is connected by the circular arc on tip circle with the circular arc both ends respectively on the driving screw
The cycloid ab composition of concentric root circle.
120 degree of equally distributed three teeth from screw rod, the tooth valley line between adjacent two tooth is by symmetrical
Circular arc cd composition among straight line repairing type line segment ef, symmetrical cycloid de and two cycloids, circular arc cd are on root circle
Circular arc, root is round and tip circle is concentric circles.
It is described from screw rod cycloid section equation are as follows:
A kind of double-screw type flowmeter of twin-screw rotor molded line as shown in Figure 1, its main feature is that: including a pair of intermeshing master
Screw rotor 12, from screw rotor 8, be separately mounted to the bearing 13 at main rotor both ends and the bearing 9 from two ends of rotor, cover respectively
Ladder-like bicyclic bearing pressure ring in principal and subordinate's screw rotor bearings at both ends, is embedded in driven screw rotor at cylindrical housings 3
The flange end cap 11 of sensor module 6 and cylindrical housings both ends in radial hole among corresponding shell.
Supplementary explanation:
As shown in Figure 1, the both ends of inventive shell are sealed by flange end cap respectively, with 8 between each flange end cap and shell
Hexagon socket cap head screw 1 connects, and is sealed by O-shaped rubber seal 2.The both ends of every screw rotor are configured with a depth
Ditch ball bearing (9,13).
The flange end cap 11 at the cylindrical housings both ends is respectively provided with a hole, as the entrance and exit of flowmeter, stream
After body enters the flowmeter entrance, master and slave screw rotor intermeshing rotation is pushed by peripheral force and axial force, periodically
Enclosed volume chamber is formed, the discharge capacity of every turn of discharge is constant.
As shown in Figure 1, Figure 3, the axial length from screw rotor 8 is smaller than the axial length of driving screw rotor 12,
To realize the bearing at principal and subordinate's screw rod both ends axially arranged in dislocation, the center of principal and subordinate's screw rod is away from being equal to principal and subordinate after arranged in dislocation
Center when screw rod engages is radial stacking away from, the bearing at principal and subordinate's screw rod both ends, and radial stacking depth is nibbled with principal and subordinate's screw gear
The depth of conjunction matches.
Supplementary explanation:
It is smaller than the length of driving screw bearing from the length of screw rod, the reason is that: center when due to the engagement of principal and subordinate's screw rod is away from wanting
Center when tangent less than principal and subordinate's screw-bearing is away from when principal and subordinate's spiro rod length is consistent, the bearing at both ends is necessarily tangent, bearing
The center of principal and subordinate's screw rod is away from being opened when tangent, becomes non-engagement from gear engagement, and solution is will be from the length of screw rod
It is designed as the length of shorter than driving screw, is allowed from the bearing and driving screw of screw rod axially arranged in dislocation, to avoid two bearings
Tangent situation, with guarantee the center of the center of principal and subordinate's screw rod away from for engagement when away from.When bearing arranged in dislocation bearing, two bearings half
Along radial direction, some is superposition to diameter, and the depth of superposition is matched with the depth engaged.
The ladder-like bicyclic bearing pressure ring is as shown in figure 4, by relatively thick pressure ring and relatively thin pressure ring same flat
It is formed by connecting in face, relatively thick pressure ring is set on the relatively short bearing from rotor, and relatively thin pressure ring is sleeved on phase
To on the bearing of long main rotor；The sensor module is hall sensor component, is measured by hall sensor component
The revolution of screw rotor out, so that it may the accurate flow output for obtaining screw rod flowmeter.
Supplementary explanation:
It is arranged in the both ends of rotor using a pair of ladder-like bicyclic bearing pressure ring (as shown in Figure 4), realizes that master and slave screw rod turns
The space axial direction interlaced arrangement of the adjacent bearing of son, is fastened between bearing pressure ring and bearing using circlip.
It is emphasized that embodiment of the present invention is illustrative and not restrictive, therefore the present invention includes
It is not limited to embodiment described in specific embodiment.
Claims (10)
1. a kind of twin-screw rotor molded line, including intermeshing driving screw molded lines of rotor, from screw rotor molded line, feature exists
In: the end face of the driving screw molded lines of rotor be the two flute profile end faces symmetrical along 180 degree, it is described from screw rotor molded line
End face is the 120 degree of equally distributed three flute profile end faces in interval, the driving screw flute profile line with from the tooth between adjacent two tooth of screw rod
Valley line matches.
2. a kind of twin-screw rotor molded line according to claim 1, it is characterised in that: 180 is symmetrical on the driving screw
The cycloid that the flute profile line of two teeth is connected concentric root circle by the circular arc on tip circle with the circular arc both ends respectively forms.
3. a kind of twin-screw rotor molded line according to claim 1, it is characterised in that: it is described from screw rod 120 degree uniformly
Three teeth of distribution, tooth valley line between adjacent two tooth by symmetrical straight line repairing type line segment, symmetrical cycloid, with
And the two circular arc compositions among cycloid, the circular arc are the circular arc on root circle, round root with tip circle is concentric circles.
4. a kind of twin-screw rotor molded line according to claim 3, it is characterised in that: described from screw rod cycloid section equation
Are as follows:
。
5. a kind of twin-screw rotor molded line according to claim 3, it is characterised in that: the straight line repairing type line from screw rod
Section are as follows:
。
6. a kind of twin-screw rotor molded line according to claim 2, it is characterised in that: the driving screw cycloid section equation
Are as follows:
。
7. a kind of double-screw type flowmeter based on a kind of twin-screw rotor molded line described in claim 1, it is characterised in that: including
A pair of intermeshing principal and subordinate's screw rotor, is set in principal and subordinate's screw rod turn at the bearing for being separately mounted to principal and subordinate's two ends of rotor
Ladder-like bicyclic bearing pressure ring in sub- bearings at both ends, is embedded in shell corresponding to driven screw rotor cylindrical housings
Between radial hole in sensor module and cylindrical housings both ends flange end cap.
8. a kind of double-screw type flowmeter of twin-screw rotor molded line according to claim 7, it is characterised in that: the cylinder
The flange end cap at shape shell both ends is respectively provided with a hole, and as the entrance and exit of flowmeter, fluid enters the flowmeter entrance
Afterwards, master and slave screw rotor intermeshing rotation is pushed by peripheral force and axial force, periodically forms enclosed volume chamber, often
The discharge capacity for turning discharge is constant.
9. a kind of double-screw type flowmeter of twin-screw rotor molded line according to claim 7, it is characterised in that: described from spiral shell
The axial length of bar rotor is smaller than the axial length of driving screw rotor, to realize the bearing at principal and subordinate's screw rod both ends axially
Arranged in dislocation, the center of principal and subordinate's screw rod is away from center when being equal to the engagement of principal and subordinate's screw rod away from, principal and subordinate's screw rod both ends after arranged in dislocation
Bearing is radial stacking, and the depth that radial stacking depth is engaged with principal and subordinate's screw gear matches.
10. a kind of double-screw type flowmeter of twin-screw rotor molded line according to claim 7, it is characterised in that: the rank
The bicyclic bearing pressure ring of scalariform is formed by connecting in the same plane by relatively thick pressure ring and relatively thin pressure ring, relatively thick pressure
Ring set fills on the relatively short bearing from rotor, and relatively thin pressure ring is sleeved on the bearing of relatively long main rotor, institute
The sensor module stated is hall sensor component, and the revolution of screw rotor is measured by hall sensor component, so that it may
The accurate flow output for obtaining screw rod flowmeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810909165.9A CN108955795B (en) | 2018-08-10 | 2018-08-10 | Double-screw rotor molded line and double-screw flowmeter based on molded line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810909165.9A CN108955795B (en) | 2018-08-10 | 2018-08-10 | Double-screw rotor molded line and double-screw flowmeter based on molded line |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108955795A true CN108955795A (en) | 2018-12-07 |
| CN108955795B CN108955795B (en) | 2024-01-26 |
Family
ID=64469270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810909165.9A Active CN108955795B (en) | 2018-08-10 | 2018-08-10 | Double-screw rotor molded line and double-screw flowmeter based on molded line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108955795B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112729423A (en) * | 2020-12-22 | 2021-04-30 | 金迈思液压设备（天津）有限公司 | Double-screw rotor flow meter |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5415041A (en) * | 1994-01-24 | 1995-05-16 | Flowdata, Inc. | Double helical flowmeter |
| CN2404105Y (en) * | 2000-01-27 | 2000-11-01 | 上海一诺仪表有限公司 | Double-rotor flowmeter |
| CN101042301A (en) * | 2006-03-23 | 2007-09-26 | 上海一诺仪表有限公司 | 3-teeth double-rotor flowmeter |
| CN104048717A (en) * | 2014-07-01 | 2014-09-17 | 重庆耐德工业股份有限公司 | Duplex rotor meter |
| CN104395609A (en) * | 2012-05-08 | 2015-03-04 | 拉尔夫·斯蒂芬斯 | Spindle compressor |
| CN204788531U (en) * | 2015-07-27 | 2015-11-18 | 东莞市吉鑫高分子科技有限公司 | Screw flowmeter of polyurethane processing host computer |
| CN208968605U (en) * | 2018-08-10 | 2019-06-11 | 金迈思液压设备（天津）有限公司 | A kind of twin-screw rotor molded line and the double-screw type flowmeter based on the molded line |
-
2018
- 2018-08-10 CN CN201810909165.9A patent/CN108955795B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5415041A (en) * | 1994-01-24 | 1995-05-16 | Flowdata, Inc. | Double helical flowmeter |
| CN2404105Y (en) * | 2000-01-27 | 2000-11-01 | 上海一诺仪表有限公司 | Double-rotor flowmeter |
| CN101042301A (en) * | 2006-03-23 | 2007-09-26 | 上海一诺仪表有限公司 | 3-teeth double-rotor flowmeter |
| CN104395609A (en) * | 2012-05-08 | 2015-03-04 | 拉尔夫·斯蒂芬斯 | Spindle compressor |
| CN104048717A (en) * | 2014-07-01 | 2014-09-17 | 重庆耐德工业股份有限公司 | Duplex rotor meter |
| CN204788531U (en) * | 2015-07-27 | 2015-11-18 | 东莞市吉鑫高分子科技有限公司 | Screw flowmeter of polyurethane processing host computer |
| CN208968605U (en) * | 2018-08-10 | 2019-06-11 | 金迈思液压设备（天津）有限公司 | A kind of twin-screw rotor molded line and the double-screw type flowmeter based on the molded line |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112729423A (en) * | 2020-12-22 | 2021-04-30 | 金迈思液压设备（天津）有限公司 | Double-screw rotor flow meter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108955795B (en) | 2024-01-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208968605U (en) | A kind of twin-screw rotor molded line and the double-screw type flowmeter based on the molded line | |
| CN108955795A (en) | A kind of twin-screw rotor molded line and the double-screw type flowmeter based on the molded line | |
| US9470228B2 (en) | Multiple segment lobe pump | |
| CN105546042B (en) | Parallel connection subtracts speed change integration end face oscillating tooth mechanism | |
| CN106640627B (en) | A kind of Conic thread rod-bushing pair of equal area of passages | |
| CN104400409A (en) | Automatic rotary indexing mechanism of tightening machine | |
| CN204805206U (en) | High accuracy rotary cylinder | |
| CN103883865A (en) | Quantified liquid supply device | |
| WO2015089899A1 (en) | Rotation-type flowmeter | |
| Shi et al. | Development of a micropump composed of three gears with Logix tooth profiles fabricated by micromilling technology | |
| CN102748283A (en) | Screw cone compression mechanism | |
| CN202382789U (en) | Oval gear flowmeter | |
| CN109373167B (en) | Oil pump with double oil outlet channel structure | |
| CN205089524U (en) | Irrotationality is apart from all -metal positive displacement well drilling motor | |
| CN102562802B (en) | Assembly type dynamic and static pressure bearing with radiating fin and finely-adjustable clearance | |
| Sang et al. | Performance optimization of an oil ellipse gerotor pump for automotive engine | |
| CN113833655A (en) | Screw vacuum pump rotor and screw vacuum pump | |
| CN207393440U (en) | A kind of peristaltic pump | |
| CN107838694B (en) | A kind of quiet dynamic pressure directly turns platform | |
| CN110202392A (en) | A kind of turntable hydrostatic slideway etc. oil masses oil supply mechanism and its method | |
| CN109033527B (en) | Mathematical model for describing external characteristics of centrifugal pump | |
| CN214660820U (en) | Process fluid gear flow dividing device | |
| CN210654912U (en) | Cylindrical cam divider | |
| CN204371658U (en) | A kind of stator bimorph transducer pump structure | |
| CN210196400U (en) | Speed reducer gear shaft integrated structure |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 301899 No. 1, Tianxing Road, energy conservation and environmental protection industrial zone, Baodi District, Tianjin Patentee after: Hailink hydraulic technology (Tianjin) Co.,Ltd. Country or region after: China Address before: 301899 No. 1, Tianxing Road, energy conservation and environmental protection industrial zone, Baodi District, Tianjin Patentee before: JINMAISI HYDRAULIC EQUIPMENT (TIANJIN) CO.,LTD. Country or region before: China |
|
| CP03 | Change of name, title or address |