CN207920851U - A kind of nothing is stranded the lobe pump of liquid phenomenon - Google Patents
A kind of nothing is stranded the lobe pump of liquid phenomenon Download PDFInfo
- Publication number
- CN207920851U CN207920851U CN201820098434.3U CN201820098434U CN207920851U CN 207920851 U CN207920851 U CN 207920851U CN 201820098434 U CN201820098434 U CN 201820098434U CN 207920851 U CN207920851 U CN 207920851U
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- rotor
- circular arc
- pump
- cam pump
- molded line
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Abstract
The utility model discloses the lobe pumps that a kind of nothing is stranded liquid phenomenon, belong to cam pump technical field；The profile molded line of rotor of cam pump is smoothly connected successively by 6 sections of head and the tail in the utility model addendum circle arc AB, the first circular arc BC, the equidistant curve CD of the first cycloid, tooth root circular arc DE, the equidistant curve EF of the second cycloid, the second circular arc FA are formed；Left rotor of cam pump (1) is identical with right rotor of cam pump (2) in the utility model, and it forms a gap after drain and does not close working chamber for δ, as two rotors continue to synchronize incorgruous dual AC power movement, gap delta reduces with the reduction of working chamber, therefore, the lobe pump proposed does not generate tired liquid phenomenon during the motion；The lobe pump proposed also has the characteristics that all to be smoothly connected between each curve of rotor, this rotor improves intensity and the service life of itself, can be suitable for more high-revolving operating mode, and then improve the conevying efficiency of lobe pump.
Description
Technical field
The utility model is related to lobe pump, more particularly to a kind of nothing is stranded the lobe pump of liquid phenomenon.
Background technology
Lobe pump is a kind of rotary displacement pump, can be intermeshed by two or part meshing rotors synchronize it is incorgruous
Dual AC power moves, and realizes the sucking, supercharging and discharge of liquid；Since the medium of lobe pump transport is liquid, worked
Do not allow tired liquid phenomenon occur in journey；The profile molded line of rotor of cam pump utilizes the sealing performance, efficiency and volume of lobe pump
Rate influence is very big, therefore is very important to the rational design of its profile molded line.
The profile molded line of common rotor of cam pump is the profile molded line of the combination of circular arc and cycloid；But this combination
Profile molded line can cause liquid during pressure-increasing unit, there is the process of closing working chamber volume being gradually reduced, because of liquid
It is incompressible and generate pressure abruptly increase, i.e., tired liquid phenomenon；Meanwhile the area utilization of this rotor is not high, and there are cusps
With rough point, the problem of stress concentration, deformation are also easy to produce at these and is worn, these problems can all influence lobe pump
Operational efficiency.The United States Patent (USP) of Patent No. US6146121, using the profile molded line of bending instead of cycloid, but this type
Line can make two rotors cause a large amount of reflux of medium during the motion, so as to cause the substantially drop of lobe pump working efficiency
It is low.
Utility model content
In order to solve the problems, such as the tired liquid phenomenon of existing rotor of cam pump presence and its profile molded line, there are cusp, this practicalities
A kind of novel lobe pump for proposing nothing and being stranded liquid phenomenon, rotor profile molded line by 4 sections of circular arcs and 2 sections of cycloids equidistant curve group
At；According to the incorgruous dual AC power characteristics of motion of rotor of cam pump synchronizing during the work time, first according to the at a fully engaged feelings of rotor
Condition determines the position of the equidistant curve of circular arc and cycloid, since lobe pump is not allow closing work occur during the work time
Make the reduction process of chamber volume, thus further according to the factor of rotating speed, the viscosity of conveying medium and characteristic by circular arc and cycloid etc.
It rotates a rational angle counterclockwise away from curve, avoids liquid existing tired liquid phenomenon during pressure-increasing unit, obtain
A kind of nothing is stranded the lobe pump of liquid phenomenon.Simultaneously also solve existing rotor of cam pump there are caused by cusp stress concentration and
By washing away yielding problem；There is important meaning for the profile molded line for enriching rotor of cam pump and the development for promoting lobe pump
Justice.
To achieve the goals above, the utility model adopts the following technical solution：
A kind of nothing is stranded the lobe pump of liquid phenomenon, including left rotor of cam pump (1) and right rotor of cam pump (2)；Left lobe pump
Rough tie point is not present in the profile molded line of rotor (1)；The profile molded line of left rotor of cam pump (1) is by 6 sections of smooth companies of head and the tail
The curve composition connect, is followed successively by：Addendum circle arc AB, the first circular arc BC, the equidistant curve CD of the first cycloid, tooth root circular arc DE,
The equidistant curve EF of two cycloids, the second circular arc FA；The wheel of the profile molded line and right rotor of cam pump (2) of left rotor of cam pump (1)
Profile line is identical；Left rotor of cam pump (1) and right rotor of cam pump (2) synchronize under the drive of synchromesh gear
The movement of incorgruous dual AC power, addendum circle arc AB, tooth root circular arc DE in the profile molded line of left rotor of cam pump (1) respectively with right cam
Tooth root circular arc de, addendum circle arc ab in the profile molded line of pump rotor (2) realize correctly engagement；Left rotor of cam pump (1)
The equidistant curve CD of the first circular arc BC, the first cycloid, the equidistant curve EF of the second cycloid, the second circular arc FA in profile molded line with
The equidistant curve cd of first cycloid, the first circular arc bc, the second circular arc fa, the second pendulum in the profile molded line of right rotor of cam pump (1)
The equidistant curve ef of line does not constitute meshing relation；After drain, the first cycloid in left rotor of cam pump (1) profile molded line etc.
One is formed away from addendum circle arc ab, the first circular arc bc in curve CD, tooth root circular arc DE and right rotor of cam pump (2) profile molded line
There are the working chamber in gap, equidistant curve CD and the right lobe pump of the first cycloid in left rotor of cam pump (1) profile molded line turn
The first circular arc bc in sub (2) profile molded line forms a gap delta, as two rotors continue to synchronize incorgruous dual AC power movement,
The working chamber is gradually reduced, and gap delta is gradually reduced with the reduction of working chamber.
A kind of nothing is stranded the lobe pump of liquid phenomenon, and the equation of left rotor of cam pump (1) profile molded line is：
1. the equation of addendum circle arc AB is：
2. the equation of the first circular arc BC is：
In formula：
(x0,y0) be following two curves intersection point：
x2+y2=(R1-r1)2
Wherein：
3. the equation of the equidistant curve CD of the first cycloid is：
Wherein：
4. the equation of tooth root circular arc DE is：
5. the equation of the equidistant curve EF of the second cycloid is：
6. the equation of the second circular arc FA is：
More than：T-angle parameter, rad；R1- radius of addendum, mm；R2- pitch radius, mm；R3- root radius,
mm；r1- the first circular arc, the second arc radius, mm；α-rotation angle, rad；β-according to rotating speed, conveying medium viscosity and
The size of the transport particles angle to be adjusted, rad.
A kind of nothing is stranded the lobe pump of liquid phenomenon, including the identical double leaf rotor of cam pump of two profile molded line, double
The profile molded line of leaf rotor of cam pump is all symmetrical about x-axis and y-axis；Y-axis will be located in the profile molded line of left rotor of cam pump (1)
All curves on right side rotate counterclockwiseAll curves for only retaining first quartile, obtain the 1/4 of double leaf rotor of cam pump
Section profile molded line obtains the profile molded line of complete double leaf rotor of cam pump according to its symmetry.
A kind of nothing proposed is stranded the lobe pump tool following advantages of liquid phenomenon：
1. during the pressure-increasing unit of liquid, there is no the closing working chamber volumes being gradually reduced, and are not in tired liquid
Phenomenon.
2. increasing the area utilization of rotor, and then improve the operational efficiency of lobe pump.
3. being all smoothly connected between each curve, itself intensity and service life are improved, higher rotating speed can be suitable for
Operating mode.
Description of the drawings
Fig. 1 is the engagement figure of existing two rotor of cam pump for existing and being stranded liquid phenomenon.
Fig. 2 is left rotor of cam pump (1) figure of proposed lobe pump.
Fig. 3 is the engagement figure of two rotor of cam pump of the lobe pump that proposed nothing is stranded liquid phenomenon.
Fig. 4 is the engagement figure of proposed rotor of cam pump under different angle.
Fig. 5 is that a kind of nothing proposed is stranded the double leaf rotor of cam pump figure of liquid phenomenon.
Specific implementation mode
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1, the engagement figure between existing left rotor of cam pump and right rotor of cam pump, left rotor of cam pump
Profile molded line be made of 4 sections of curves, be followed successively by：Addendum circle arc AB, cycloid BC, tooth root circular arc CD and cycloid DA, addendum circle arc
The tie point B and addendum circle arc AB of AB and cycloid BC are cusp, left rotor of cam pump and right cam with the tie point A of cycloid DA
Pump rotor is identical.
As shown in Figure 1, the engaging there are cycloid and cusp due to 2 rotors, in the profile molded line of left rotor of cam pump
Cycloid BC, tooth root circular arc CD and addendum circle arc ab one volume of formation in the profile molded line of right rotor of cam pump are ever-reduced
Working chamber is closed, that is, produces tired liquid phenomenon.
As shown in Fig. 2, a kind of nothing to be proposed is stranded the lobe pump figure of liquid phenomenon, the wheel profile of left rotor of cam pump (1)
The curve that line is smoothly connected by 6 sections of head and the tail forms, and is followed successively by：The equidistant curve of addendum circle arc AB, the first circular arc BC, the first cycloid
CD, tooth root circular arc DE, the equidistant curve EF of the second cycloid, the second circular arc FA.
As shown in Fig. 2, a kind of nothing to be proposed is stranded the lobe pump figure of liquid phenomenon, the side of left rotor of cam pump (1) curve
Journey is as follows：
1. the equation of addendum circle arc AB is：
2. the equation of the first circular arc BC is：
In formula：
(x0,y0) be following two curves intersection point：
x2+y2=(R1-r1)2
Wherein：
3. the equation of the equidistant curve CD of the first cycloid is：
Wherein：
4. the equation of tooth root circular arc DE is：
5. the equation of the equidistant curve EF of the second cycloid is：
6. the equation of the second circular arc FA is：
More than：T-angle parameter, rad；R1- radius of addendum, mm；R2- pitch radius, mm；R3- root radius,
mm；r1- the first circular arc, the second arc radius, mm；α-rotation angle, rad；β-according to rotating speed, conveying medium viscosity and
The size of the transport particles angle to be adjusted, rad.
As shown in figure 3, the engagement figure between left rotor of cam pump (1) and right rotor of cam pump (2), left rotor of cam pump
(1) identical with right rotor of cam pump (2), left rotor of cam pump (1) is with right rotor of cam pump (2) in synchronous incorgruous dual AC power
It can realize that correct engagement, addendum circle arc AB, the tooth root circular arc DE in left rotor of cam pump (1) are convex with the right side respectively in motion process
Take turns the tooth root circular arc de in pump rotor (2), addendum circle arc ab realizes that correctly engagement, other profile molded line are not involved in engagement；
2 rotor of cam pump proposed will not form the closing working chamber that volume is gradually reduced, i.e., not will produce tired liquid phenomenon, but
Equidistant curve CD, tooth root circular arc DE by the first cycloid in the profile molded line of left rotor of cam pump (1) and right rotor of cam pump
(2) the addendum circle arc ab in profile molded line, the first circular arc bc form that a volume is ever-reduced not to close working chamber.
As shown in figure 4, being 2 rotor of cam pump being proposed in the engagement figure of different angle, each phase in (a)~(l) figures
The corresponding angle of eccentricity of neighbour's figure is staggered 10 °；I.e. (a) figure rotates clockwise 10 ° to the left rotor of cam pump of (b) figure (1), right cam
Pump rotor (2) 10 ° of rotation counterclockwise；(b) figure rotates clockwise 10 ° to the left rotor of cam pump of (c) figure (1), right rotor of cam pump
(2) 10 ° of rotation counterclockwise；And so on；Addendum circle arc AB, tooth root circular arc DE in left rotor of cam pump (1) is convex with the right side respectively
Tooth root circular arc de, addendum circle arc ab intermeshings in wheel pump rotor (2), other profile molded line are not involved in engagement.
As shown in figure 5, a kind of nothing to be proposed is stranded the double leaf rotor of cam pump of liquid phenomenon, left rotor of cam pump and the right side are convex
Wheel pump rotor is identical, and 1/4 curve being smoothly connected by 4 sections of head and the tail of the profile molded line of left rotor of cam pump forms, successively
For：Addendum circle arc AB, circular arc BC, the equidistant curve CD of cycloid, tooth root circular arc DE；It is closed according to the profile molded line of left rotor of cam pump
In x-axis, the symmetrical property of y-axis, the profile molded line of entire left rotor of cam pump is obtained.
It is above-mentioned although specific embodiments of the present invention are described with reference to the accompanying drawings, but not to this practicality newly
The limitation of type protection domain, those skilled in the art should understand that, based on the technical solution of the present invention, ability
Field technique personnel need not make the creative labor the various modifications or changes that can be made still in the protection model of the utility model
Within enclosing.
Claims (2)
1. a kind of nothing is stranded the lobe pump of liquid phenomenon, including left rotor of cam pump (1) and right rotor of cam pump (2)；It is characterized in that：It is left
Rough tie point is not present in the profile molded line of rotor of cam pump (1)；The profile molded line of left rotor of cam pump (1) is by 6 sections of head and the tail
The curve composition being smoothly connected, is followed successively by：Addendum circle arc AB, the first circular arc BC, the equidistant curve CD of the first cycloid, tooth root circular arc
DE, the equidistant curve EF of the second cycloid, the second circular arc FA；The profile molded line of left rotor of cam pump (1) and right rotor of cam pump (2)
Profile molded line it is identical；Left rotor of cam pump (1) under the drive of synchromesh gear, is made simultaneously with right rotor of cam pump (2)
Synchronize the movement of incorgruous dual AC power, addendum circle arc AB, the tooth root circular arc DE in the profile molded line of left rotor of cam pump (1) respectively with the right side
Tooth root circular arc de, addendum circle arc ab in the profile molded line of rotor of cam pump (2) realize correctly engagement；Left rotor of cam pump
(1) the equidistant curve CD of the first circular arc BC, the first cycloid in profile molded line, the equidistant curve EF of the second cycloid, the second circle
The equidistant curve cd of first cycloid in the profile molded line of arc FA and right rotor of cam pump (2), the first circular arc bc, the second circular arc fa,
The equidistant curve ef of second cycloid does not constitute meshing relation；After drain, the first pendulum in left rotor of cam pump (1) profile molded line
Equidistant curve CD, the tooth root circular arc DE of line and the addendum circle arc ab in right rotor of cam pump (2) profile molded line, the first circular arc bc shapes
At one there are the working chamber in gap, the equidistant curve CD of the first cycloid in left rotor of cam pump (1) profile molded line and the right side are convex
The the first circular arc bc taken turns in pump rotor (2) profile molded line forms a gap delta, as two rotors continue to synchronize incorgruous dual AC power
Movement, the working chamber are gradually reduced, and gap delta is gradually reduced with the reduction of working chamber.
2. the lobe pump of liquid phenomenon is stranded according to a kind of nothing described in claim 1, it is characterized in that：Left rotor of cam pump (1) wheel
The equation of profile line is：
1. the equation of addendum circle arc AB is：
2. the equation of the first circular arc BC is：
In formula：
(x0,y0) be following two curves intersection point：
x2+y2=(R1-r1)2
Wherein：
3. the equation of the equidistant curve CD of the first cycloid is：
Wherein：
4. the equation of tooth root circular arc DE is：
5. the equation of the equidistant curve EF of the second cycloid is：
6. the equation of the second circular arc FA is：
More than：T-angle parameter, rad；R1- radius of addendum, mm；R2- pitch radius, mm；R3- root radius, mm；
r1- the first circular arc, the second arc radius, mm；α-rotation angle, rad；β-is according to rotating speed, the viscosity of conveying medium and transport
The size of the particle angle to be adjusted, rad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820098434.3U CN207920851U (en) | 2018-01-22 | 2018-01-22 | A kind of nothing is stranded the lobe pump of liquid phenomenon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820098434.3U CN207920851U (en) | 2018-01-22 | 2018-01-22 | A kind of nothing is stranded the lobe pump of liquid phenomenon |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207920851U true CN207920851U (en) | 2018-09-28 |
Family
ID=63604551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820098434.3U Expired - Fee Related CN207920851U (en) | 2018-01-22 | 2018-01-22 | A kind of nothing is stranded the lobe pump of liquid phenomenon |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207920851U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108050059A (en) * | 2018-01-22 | 2018-05-18 | 中国石油大学(华东) | A kind of nothing is stranded the lobe pump of liquid phenomenon |
| CN109268258A (en) * | 2018-10-09 | 2019-01-25 | 宿迁学院 | A kind of ∥ shape compensating groove of external gear rotary pump |
-
2018
- 2018-01-22 CN CN201820098434.3U patent/CN207920851U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108050059A (en) * | 2018-01-22 | 2018-05-18 | 中国石油大学(华东) | A kind of nothing is stranded the lobe pump of liquid phenomenon |
| CN109268258A (en) * | 2018-10-09 | 2019-01-25 | 宿迁学院 | A kind of ∥ shape compensating groove of external gear rotary pump |
| CN109268258B (en) * | 2018-10-09 | 2023-07-07 | 宿迁学院 | // shape unloading groove of external gear pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180928 Termination date: 20220122 |