CN208968605U - 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
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- CN208968605U CN208968605U CN201821295515.9U CN201821295515U CN208968605U CN 208968605 U CN208968605 U CN 208968605U CN 201821295515 U CN201821295515 U CN 201821295515U CN 208968605 U CN208968605 U CN 208968605U
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Abstract
The utility model 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 of twin-screw rotor molded line 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.The utility model screw flowmeter structure 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
The utility model belongs to measuring instrument technical field more particularly to a kind of twin-screw rotor molded line and based on the molded line
Double-screw type 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.
Utility model content
In view of the problems of the existing technology the utility model, proposes a kind of twin-screw rotor molded line and based on the molded line
Double-screw 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:
x21=acost-Rdcos(1+i12)t；
y21=asint-Rdsin(1+i12)t；
RdTip circle；RgRoot circle, center is away from a=Rd+Rg；
i121/ ω 2 of=n1/n2=ω；N1, n2 are the number of teeth, and ω 1, ω 2 are angular speed；T is angle variables.
The straight line repairing type line segment from screw rod are as follows:
Repairing type size are as follows: 0.05Rd；
Repairing type radius are as follows: Rd-0.05Rd；
Straight line and cycloid intersecting point coordinate: x2 2±y2 2=(0.95Rd) 2, intersecting point coordinate is (m, n)；
The angle of radial alignment and x-axis:
Radial alignment equation are as follows: x22=Rdcostcosa；y22=Rdcostsina。
The driving screw cycloid section equation are as follows:
x′11=acost-0.95Rdcos(1+i21)t；
y′11=asint-0.95Rdsin(1+i21)t；
RdTip circle；RgRoot circle, center is away from a=Rd+Rg；
i212/ ω 1 of=n2/n1=ω；N1, n2 are the number of teeth, and ω 1, ω 2 are angular speed；T is angle variables.
A kind of double-screw type flowmeter of twin-screw rotor molded line, its main feature is that: including a pair of intermeshing principal and subordinate's spiral shell
Bar rotor, the bearing for being separately mounted to principal and subordinate's two ends of rotor, be set in it is ladder-like in principal and subordinate's screw rotor bearings at both ends
Bicyclic bearing pressure ring, cylindrical housings, the sensor in the radial hole that is embedded among shell corresponding to driven screw rotor
The flange end cap at component and 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.
The utility model has the advantages of
1, the utility model screw flowmeter structure is simple and compact, few easy workout part, precision height (± 0.1%), processing side
Just, area utilization factor is big, dynamic balancing effect is good, is still able to maintain preferable working performance in high pressure and high dielectric viscosity, can
To be widely used 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 the utility model screw flowmeter；
Fig. 2 is the master and slave screw rotor molded line of the utility model screw rod flowmeter；
Fig. 3 is that the master and slave screw rotor of the utility model screw rod flowmeter engages perspective view；
Fig. 4 is the utility model screw rotor bearing pressure ring structure chart；
Fig. 5 is the utility model flowmeter sensor installation diagram；
Fig. 6 is the cycloid schematic diagram one of disclosed K1 to K72.
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；7-O type rubber seal；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
The utility model design principle
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 got over
Few, then tooth socket is deeper, as shown in fig. 6,8 cycloid figures altogether, scheme, the number of teeth is from K=1 to K=from first figure to last one
72, the cusp in figure is tooth socket, and the cusp distance center point of first figure is nearest, and the cusp distance center of the last one figure
Point 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 many then tooth socket is unstable when shallowly engaging.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, and this point is also to be determined by the principle of cycloid.The number of teeth when mobile jib, the slot number from bar are equal
When, it is certain different with the diameter of mobile jib from the diameter of bar, it is less than mobile jib diameter from shank diameter, due to diameter difference, principal and subordinate's bar is nibbled
It wants poor when stability diameter group is identical when conjunction, therefore, guarantees good balance in order to which the diameter of principal and subordinate's bar is identical, principal and subordinate's bar
The number of teeth and slot number cannot be equal, therefore are matched using the number of teeth of principal and subordinate's bar 2:3.
Based on principles above, the utility model 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:
x21=acost-Rdcos(1+i12)t；
y21=asint-Rdsin(1+i12)t；
RdTip circle；RgRoot circle, center is away from a=Rd+Rg；
i121/ ω 2 of=n1/n2=ω；N1, n2 are the number of teeth, and ω 1, ω 2 are angular speed；T is angle variables；
The straight line repairing type line segment ef from screw rod are as follows:
Repairing type size are as follows: 0.05Rd；
Repairing type radius are as follows: Rd-0.05Rd；
Straight line and cycloid intersecting point coordinate: x2 2±y2 2=(0.95Rd)2, intersecting point coordinate is (m, n)；
The angle of radial alignment and x-axis:
Radial alignment equation are as follows: x22=Rdcostcosa；y22=Rdcostsina；
The driving screw cycloid section ab equation are as follows:
x′11=acost-0.95Rdcos(1+i21)t；
y′11=asint-0.95Rdsin(1+i21)t；
RdTip circle；RgRoot circle, center is away from a=Rd+Rg；
i212/ ω 1 of=n2/n1=ω；N1, n2 are the number of teeth, and ω 1, ω 2 are angular speed；T is angle variables；
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 be intermeshed
Driving 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, point
The ladder-like bicyclic bearing pressure ring that is not sleeved in principal and subordinate's screw rotor bearings at both ends, is embedded in driven screw at cylindrical housings 3
The flange end cap 11 of sensor module 6 and cylindrical housings both ends in radial hole among shell corresponding to rotor.
Supplementary explanation:
As shown in Figure 1, the both ends of the utility model shell are sealed by flange end cap respectively, each flange end cap and shell it
Between connected with 8 hexagon socket cap head screws 1, and sealed by O-shaped rubber seal 2.The both ends of every screw rotor configure
There is a deep groove 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
Away from be less than principal and subordinate's screw-bearing it is tangent when center away from, when principal and subordinate's spiro rod length is consistent, the bearing at both ends is necessarily tangent,
The center of principal and subordinate's screw rod is away from being opened when bearing is tangent, becomes non-engagement from gear engagement, and solution is will be from screw rod
Design of length is 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
The tangent situation of bearing, 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 axis
Holding radius, some is superposition along radial direction, 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 master and slave spiral shell
The space axial direction interlaced arrangement of the adjacent bearing of bar rotor, is fastened between bearing pressure ring and bearing using circlip.
It is emphasized that embodiment described in the utility model is illustrative and not restrictive, therefore this is practical
Novel includes being 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:
x21=acost-Rdcos(1+i12)t；
y21=asint-Rdsin(1+i12)t；
RdTip circle；RgRoot circle, center is away from a=Rd+Rg；
i121/ ω 2 of=n1/n2=ω；N1, n2 are the number of teeth, and ω 1, ω 2 are angular speed；T is angle variables.
5. a kind of twin-screw rotor molded line according to claim 2 or 3, it is characterised in that: described to be repaired from the straight line of screw rod
Molded line section are as follows:
Repairing type size are as follows: 0.05Rd；
Repairing type radius are as follows: Rd-0.05Rd；
Straight line and cycloid intersecting point coordinate: x2 2±y2 2=(0.95Rd) 2, intersecting point coordinate is (m, n)；
The angle of radial alignment and x-axis:
Radial alignment equation are as follows: x22=Rdcostcosa；y22=Rdcostsina。
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:
x′11=acost-0.95Rdcos(1+i21)t；
y′11=asint-0.95Rdsin(1+i21)t；
RdTip circle；RgRoot circle, center is away from a=Rd+Rg；
i212/ ω 1 of=n2/n1=ω；N1, n2 are the number of teeth, and ω 1, ω 2 are angular speed；T is angle variables.
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 |
|---|---|---|---|
| CN201821295515.9U CN208968605U (en) | 2018-08-10 | 2018-08-10 | A kind of twin-screw rotor molded line and the double-screw type flowmeter based on the molded line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821295515.9U CN208968605U (en) | 2018-08-10 | 2018-08-10 | A kind of twin-screw rotor molded line and the double-screw type flowmeter based on the molded line |
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| Publication Number | Publication Date |
|---|---|
| CN208968605U true CN208968605U (en) | 2019-06-11 |
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| CN201821295515.9U Active CN208968605U (en) | 2018-08-10 | 2018-08-10 | A kind of twin-screw rotor molded line and the double-screw type flowmeter based on the molded line |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108955795A (en) * | 2018-08-10 | 2018-12-07 | 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 CN201821295515.9U patent/CN208968605U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108955795A (en) * | 2018-08-10 | 2018-12-07 | 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 |
| CN108955795B (en) * | 2018-08-10 | 2024-01-26 | 金迈思液压设备（天津）有限公司 | Double-screw rotor molded line and double-screw flowmeter based on molded line |
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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. 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. |