CN100520068C - Rotor pump and method for producing same - Google Patents
Rotor pump and method for producing same Download PDFInfo
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- CN100520068C CN100520068C CNB2006101140584A CN200610114058A CN100520068C CN 100520068 C CN100520068 C CN 100520068C CN B2006101140584 A CNB2006101140584 A CN B2006101140584A CN 200610114058 A CN200610114058 A CN 200610114058A CN 100520068 C CN100520068 C CN 100520068C
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Abstract
The invention discloses a novel rotor pump and the manufacturing method, and belongs to the mechanical rotor pump. The pump includes a pump body 7, a drive rotor, a driven rotor, a driving gear 3 and a driven gear 4. The driving gear 3 and the driving rotor operate coaxially, and the driven gear 4 and the driven rotor operate coaxially. The outline of the driven rotor is processed by a cutter made according to the outline of the driving rotor by a complete generating method, or is processed by a cutter made according to the outline of the driven rotor by the complete generating method. The rotor has the manufacturing method that the outline of the rotor is designed into a required curve, a cutter is produced according to the outline for completely generating the outline of another rotor, and the outline of the other rotor is the envelope of the original curve. Since the process of the rotor adopts the complete generating method, the invention can process a high-performance rotor pump on a common machine tool. The invention has the advantages that the processing is convenient, the manufacturing cost is low, and the application range is wide.
Description
Technical field
The present invention relates to a kind of novel rotor pump and manufacture method thereof, belong to the mechanical rotor pump.
Technical background
For anufacturability and the service behaviour of improving rotor pump, now for the research of rotor pump mainly aspect three, the one, change the number of blade of two rotors simultaneously, the number of blade is 1 ~ 5, but two rotors all adopt the identical number of blade; The 2nd, the die cavity of the change pump housing; The 3rd, change the rotor profile, but because design principle always makes two rotor shapes the same, so the profile part of each rotor is to adopt method of loci processing, another part is to adopt generating method processing; Perhaps process because of processing difficulties all adopts wire cutting method, or adopt numerical control machine tool processing, manufacture cost is higher, and is difficult for guaranteeing machining accuracy, influences pump performance characteristic.
Summary of the invention
The objective of the invention is to provide a kind of novel rotor pump and manufacture method, this pump should be convenient to processing.
In order to reach purpose of the present invention, the technological scheme that is adopted comprises the pump housing 7, be positioned at power rotor and driven rotor that the pump housing 7 cooperatively interacts, be positioned at intermeshing driving gear 3 and driven gear 4 outside the pump housing 7, driving gear 3 is connected with power rotor by driving shaft 5, and coaxial running, driven gear 4 is connected with driven rotor by driven shaft 6, and coaxial running, driving shaft 5 is parallel with driven shaft 6, the profile of driven rotor is to process by complete generating method by the cutter that the power rotor profile is made, and promptly the profile of driven rotor is the envelope of power rotor profile, and two profiles are strict conjugation when work; Perhaps the profile of power rotor is to process by complete generating method by the cutter that the driven rotor profile is made, and the profile of power rotor is the envelope of driven rotor profile.
In the above-mentioned rotor pump, the number of blade of driven rotor is the positive integer more than or equal to 1.
In the above-mentioned rotor pump, the velocity ratio of driving gear 3 and driven gear 4, i.e. number of teeth inverse ratio, the velocity ratio that equals power rotor 1 and driven rotor is the inverse ratio of the number of blade.
In the above-mentioned rotor pump, power rotor and driven rotor all obtain with generating method.
In the above-mentioned rotor pump, the profile of power rotor is oval, and the number of blade of power rotor is 2, and the number of blade of driven rotor is the positive integer more than or equal to 2.
In the above-mentioned rotor pump, the profile of power rotor is the combination profile of circular arc and straight line, and the number of blade of driven rotor is the positive integer more than or equal to 2.
A kind of method of making above-mentioned rotor pump, the manufacture method of its rotor is such: the The outline design of a rotor is become needed curve, be that given profile is linear, make the profile that cutter removes complete another rotor of generate by this profile, this profile is the envelope of given profile.Two rotors described herein are power rotor of the present invention and driven rotor.
In the above-mentioned rotor pump manufacture method, when generate went out the profile of a rotor fully, the velocity ratio that the velocity ratio of cutter and this rotor equals original rotor and this rotor was the inverse ratio of the number of blade.
In the above-mentioned rotor pump manufacture method, when generate went out the profile of a rotor fully, cutter and this centre of rotor were apart from equaling original rotor and this centre of rotor distance.
In the above-mentioned rotor pump manufacture method, the profile of the rotor that will obtain by generating method is that original rotor profile is made cutter, and the rotor of generate and this profile conjugation again is composed of rotor pump with the rotor of these two generates.
Because the present invention has adopted complete generating method to the processing of rotor, makes the present invention can process high performance rotor pump on machine tool.Therefore the present invention has advantages such as easy to process, low cost of manufacture, applied range.
Description of drawings
Fig. 1 is a novel rotor pump structure schematic diagram;
Fig. 2 is that 2 o'clock generates obtain the profile of driven rotor 2 and the fundamental diagram of pump for the profile of power rotor for the number of blade of oval, power rotor 1 and driven rotor 2.Wherein Fig. 2 a) show power rotor 1 profile for oval, its number of blade is 2; Fig. 2 b) shows that its number of blade is 2 with the profile of the driven rotor 2 of the profile generate of power rotor 1; Fig. 2 c) shows the working state figure of power rotor 1 and 2 liang of profiles of driven rotor;
Fig. 3 for the profile of power rotor 1 for the number of blade of oval, power rotor 1 and driven rotor 2 be respectively 2 and 3 o'clock generates obtain the profile of driven rotor 2 and the fundamental diagram of pump.Wherein Fig. 3 a) show power rotor 1 profile for oval, its number of blade is 2; Fig. 3 b) shows that its number of blade is 3 with the profile of the driven rotor 2 of the profile generate of power rotor 1; Fig. 3 c) shows the working state figure of power rotor 1 and 2 liang of profiles of driven rotor;
Fig. 4 for the profile of power rotor 1 for the number of blade of oval, power rotor 1 and driven rotor 2 be respectively 2 and 4 o'clock generates obtain the profile of driven rotor 2 and the fundamental diagram of pump.Wherein Fig. 4 a) show power rotor 1 profile for oval, its number of blade is 2; Fig. 4 b) shows that its number of blade is 4 with the profile of the driven rotor 2 of the profile generate of power rotor 1; Fig. 4 c) shows the working state figure of power rotor 1 and 2 liang of profiles of driven rotor;
Fig. 5 is the combination profile of circular arc, straight line and circular arc for the profile of power rotor 1, and the number of blade of power rotor 1 and driven rotor 2 all is the profile that 2 o'clock generates obtain driven rotor 2, and the fundamental diagram of pump.Wherein Fig. 5 profile of a) showing power rotor 1 is the combination profile of circular arc, straight line and circular arc, and its number of blade is 2; Fig. 5 b) shows that its number of blade is 2 with the profile of the driven rotor 2 of the profile generate of power rotor 1; Fig. 5 c) shows the working state figure of power rotor 1 and 2 liang of profiles of driven rotor;
Fig. 6 is the combination profile of straight line, circular arc and circular arc for the profile of power rotor 1, and the number of blade of power rotor 1 and driven rotor 2 all is the profile that 2 o'clock generates obtain driven rotor 2, and the fundamental diagram of pump.Wherein Fig. 6 profile of a) showing power rotor 1 is the combination profile of straight line, circular arc and circular arc, and its number of blade is 2; Fig. 6 b) shows that its number of blade is 2 with the profile of the driven rotor 2 of the profile generate of power rotor 1; Fig. 6 c) shows the working state figure of power rotor 1 and 2 liang of profiles of driven rotor;
Fig. 7 is the combination profile of circular arc, straight line and circular arc for the profile of power rotor 1, and the number of blade of power rotor 1 and driven rotor 2 all is the profile that 1 o'clock generate obtains driven rotor 2, and the fundamental diagram of pump.Wherein Fig. 7 profile of a) showing power rotor 1 is the combination profile of circular arc, straight line and circular arc, and its number of blade is 1; Fig. 7 b) shows that its number of blade is 1 with the profile of the driven rotor 2 of the profile generate of power rotor 1; Fig. 7 c) shows the working state figure of power rotor 1 and 2 liang of profiles of driven rotor.
Specific embodiments
With reference to the accompanying drawings embodiments of the invention are described below.
The present invention is that the The outline design with power rotor becomes needed curve, and promptly given profile is linear, makes the profile that cutter removes complete generate driven rotor by this profile, and this profile is the envelope of virgin curve, and two profiles that obtain like this are strict conjugation when work.The shape of two rotors that the present invention obtains generally is different, and two operating rotors can have the identical number of blade, also can have the different numbers of blade.We can be called original rotor to power rotor, and driven rotor is called the generate rotor.Certainly, the present invention also can become the The outline design of driven rotor needed curve, and promptly given profile is linear, makes the profile that cutter removes complete generate power rotor by this profile, this profile is the envelope of virgin curve, and two profiles that obtain like this are strict conjugation when work.At this moment, we can be called original rotor to driven rotor, and power rotor is called the generate rotor.
For example, the profile of power rotor 1 can design and process on demand, and the profile of driven rotor 2 is to make cutter by the profile of power rotor 1 to process by complete generating method.If radius vector and the method vector put on power rotor 1 profile are respectively r
1, n
1, the radius vector and the method vector of conjugate point are respectively r on the corresponding driven rotor 2
2, n
2, O
21Be the gyration center of driven rotor 2 radius vector, v to the gyration center of power rotor 1
12Be the relative velocity vector of conjugate point place two rotors, two profile conjugate conditions must satisfy so
The profile of power rotor 1 can design according to actual needs, for example: make the good airproof performance between rotor and the pump chamber, between the rotor, just need to give the minimum profile curvature radius of rotor profile and generate rotor profile greater than allowable value.In addition, consider cutter factor easy to make, given rotor profile is usually by combinations such as simple curve such as circular arc, straight lines.
As shown in Figure 1,1 is original rotor, and 2 is the generate rotor, and 3 is driving gear, and 4 is driven gear, and 5 is driving shaft, and 6 is driven shaft, and 7 is the pump housing.The parallel axes of original rotor 1 and generate rotor 2; The profile of original rotor 1 can design on demand, the profile of generate rotor 2 is to make cutter by the profile of original rotor 1 to process by complete generating method, fully the centre distance during generate equals the centre distance of original rotor 1 and generate rotor 2, and velocity ratio equals the velocity ratio of original rotor 1 and generate rotor 2; Original rotor 1 and driving gear 3 connect firmly in coaxial rotation on the driving shaft 5 and on the pump housing 7, and generate rotor 2 and driven gear 4 connect firmly in coaxial rotation on the driven shaft 6 and on the pump housing 7; Driving gear 3 and driven gear 4 are meshing with each other, and drive original rotor 1 and generate rotor 2 and rotate by stable drive ratio.
As shown in Figure 2,1 is original rotor, and 2 is the generate rotor.The The outline design of original rotor 1 is become an ellipse, and it has two blades, as Fig. 2 a) shown in.The profile of generate rotor 2 is to make cutter by the profile of original rotor 1 to process by complete generating method, and it has two blades, as Fig. 2 b) shown in; During generate, the velocity ratio of cutter and generate rotor 2 is 2:2, and the centre distance of center cutter and generate rotor 2 equals the centre distance of original rotor 1 and generate rotor 2.When original rotor 1 and generate rotor 2 were installed in the pump housing, rotating ratio was 2:2, and the velocity ratio that also equals original rotor 1 and generate rotor 2 is the inverse ratio 2:2 of the number of blade, and the working state of original rotor 1 and generate rotor 2 is as Fig. 2 c) shown in.
As shown in Figure 3,1 is original rotor, and 2 is the generate rotor.The The outline design of original rotor 1 is become an ellipse, and it has two blades, as Fig. 3 a) shown in.The profile of generate rotor 2 is to make cutter by the profile of original rotor 1 to process by complete generating method, and it has three blades, as Fig. 3 b) shown in; During generate, the velocity ratio of cutter and generate rotor 2 is 3:2, and the centre distance of center cutter and generate rotor 2 equals the centre distance of original rotor 1 and generate rotor 2.When original rotor 1 and generate rotor 2 were installed in the pump housing, rotating ratio was 3:2, and the velocity ratio that equals original rotor 1 and generate rotor 2 is the inverse ratio 3:2 of the number of blade, and the working state of original rotor 1 and generate rotor 2 is as Fig. 3 c) shown in.
As shown in Figure 4,1 is original rotor, and 2 is the generate rotor.The The outline design of original rotor 1 is become an ellipse, and it has two blades, as Fig. 4 a) shown in.The profile of generate rotor 2 is to make cutter by the profile of original rotor 1 to process by complete generating method, and it has four blades, as Fig. 4 b) shown in; During generate, the velocity ratio of cutter and generate rotor 2 is 4:2, and the centre distance of center cutter and generate rotor 2 equals the centre distance of original rotor 1 and generate rotor 2.When original rotor 1 and generate rotor 2 were installed in the pump housing, rotating ratio was 4:2, and the velocity ratio that equals original rotor 1 and generate rotor 2 is the inverse ratio 4:2 of the number of blade, and the working state of original rotor 1 and generate rotor 2 is as Fig. 4 c) shown in.
As shown in Figure 5,1 is original rotor, and 2 is the generate rotor.The The outline design of original rotor 1 is become the combination profile of a circular arc, straight line and circular arc, and it has two blades, as Fig. 5 a) shown in.The profile of generate rotor 2 is to make cutter by the profile of original rotor 1 to process by complete generating method, and it has two blades, as Fig. 5 b) shown in; During generate, the velocity ratio of cutter and generate rotor 2 is 2:2, and the centre distance of center cutter and generate rotor 2 equals the centre distance of original rotor 1 and generate rotor 2.When original rotor 1 and generate rotor 2 were installed in the pump housing, rotating ratio was 2:2, and the velocity ratio that also equals original rotor 1 and generate rotor 2 is the inverse ratio 2:2 of the number of blade, and the working state of original rotor 1 and generate rotor 2 is as Fig. 5 c) shown in.
As shown in Figure 6,1 is original rotor, and 2 is the generate rotor.With the The outline design of original rotor 1 in line, the combination profile of circular arc and circular arc, it has two blades, as Fig. 6 a) shown in.The profile of generate rotor 2 is to make cutter by the profile of original rotor 1 to process by complete generating method, and it has two blades, as Fig. 6 b) shown in; During generate, the velocity ratio of cutter and generate rotor 2 is 2:2, and the centre distance of center cutter and generate rotor 2 equals the centre distance of original rotor 1 and generate rotor 2.When original rotor 1 and generate rotor 2 were installed in the pump housing, rotating ratio was 2:2, and the velocity ratio that also equals original rotor 1 and generate rotor 2 is the inverse ratio 2:2 of the number of blade, and the working state of original rotor 1 and generate rotor 2 is as Fig. 6 c) shown in.
As shown in Figure 7,1 is original rotor, and 2 is the generate rotor.The The outline design of original rotor 1 is become the combination profile of a circular arc, straight line and circular arc, and it has a blade, as Fig. 7 a) shown in.The profile of generate rotor 2 is to make cutter by the profile of original rotor 1 to process by complete generating method, and it also has a blade, as Fig. 7 b) shown in; During generate, the velocity ratio of cutter and generate rotor 2 is 1:1, and the centre distance of center cutter and generate rotor 2 equals the centre distance of original rotor 1 and generate rotor 2.When original rotor 1 and generate rotor 2 were installed in the pump housing, rotating ratio was 1:1, and the velocity ratio that also equals original rotor 1 and generate rotor 2 is the inverse ratio 1:1 of the number of blade, and the working state of original rotor 1 and generate rotor 2 is as Fig. 7 c) shown in.
The processing method of generate rotor 2 profiles, can on common process lathes such as gear shaping machine, gear hobbing machine, process by generate, can also on some numerical control machine tool, carry out roughing, fine finishing or grinding according to the vector equation r2 of profile, to improve the service behaviour of machining accuracy and then assurance rotor pump.
By accompanying drawing as seen, the profile of power rotor 1 can be given arbitrarily, inverse ratio by the number of blade of power rotor 1 and driven rotor 2 is determined the generate velocity ratio, and then the profile of the driven rotor 2 of generate and its conjugation, by the partner rotor profile of rotor pump of conjugation of the profile of power rotor 1 and driven rotor 2.In like manner, can be the profile of the driven rotor 2 of generate as the curve of giving rotor, the curve of the rotor 1 ' of secondary generate and its conjugation is made of the rotor profile of the rotor pump of conjugation curve 2 and 1 '.
Fully during generate, cutter equals original rotor and generate centre of rotor distance with generate centre of rotor distance; By adjusting the velocity ratio of cutter and generate rotor, and obtain the number of blade of different generate rotors 2, the velocity ratio of driving gear and driven gear is identical with the generate velocity ratio, can guarantee the proper functioning of two rotor profiles of two curves formation rotor pump.。
It should be noted last that, above embodiment is only unrestricted in order to technological scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technological scheme of the present invention, and not breaking away from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (10)
1. rotor pump, comprise the pump housing (7), be positioned at power rotor and driven rotor that the pump housing (7) cooperatively interacts, be positioned at the pump housing (7) outer intermeshing driving gear (3) and driven gear (4), driving gear (3) is connected with power rotor by driving shaft (5), and coaxial running, driven gear (4) is connected with driven rotor by driven shaft (6), and coaxial running, driving shaft (5) is parallel with driven shaft (6), it is characterized in that, the profile of driven rotor is to process by complete generating method by the cutter that the power rotor profile is made, the profile that is driven rotor is the envelope of power rotor profile, and two profiles are strict conjugation when work; Perhaps the profile of power rotor is to process by complete generating method by the cutter that the driven rotor profile is made, and the profile of power rotor is the envelope of driven rotor profile.
2. rotor pump according to claim 1 is characterized in that, the number of blade of driven rotor is the positive integer more than or equal to 1.
3. rotor pump according to claim 1 and 2 is characterized in that, the velocity ratio of driving gear (3) and driven gear (4), i.e. and the inverse ratio of the number of teeth, the velocity ratio that equals power rotor and driven rotor is the inverse ratio of the number of blade.
4. rotor pump according to claim 1 and 2 is characterized in that power rotor and driven rotor all obtain with complete generating method.
5. rotor pump according to claim 1 is characterized in that, the profile of power rotor is oval, and the number of blade of power rotor is 2, and the number of blade of driven rotor is the positive integer more than or equal to 2.
6. rotor pump according to claim 1 is characterized in that, the profile of power rotor is the combination profile of circular arc and straight line, and the number of blade of power rotor and driven rotor is the positive integer more than or equal to 2.
7. method of making the described rotor pump of claim 1, it is characterized in that, the manufacture method of its rotor is such: the The outline design of a rotor is become needed curve, be that given profile is linear, make the profile that cutter removes complete another rotor of generate by this profile, this profile is the envelope of given profile.
8. the manufacture method of rotor pump according to claim 7 is characterized in that, when generate went out the profile of a rotor fully, the velocity ratio that the velocity ratio of cutter and this rotor equals original rotor and this rotor was the inverse ratio of the number of blade.
9. the manufacture method of rotor pump according to claim 7 is characterized in that, when generate went out the profile of a rotor fully, cutter and this centre of rotor were apart from equaling original rotor and this centre of rotor distance.
10. the manufacture method of rotor pump according to claim 7 is characterized in that, the profile of the rotor that will obtain by generating method is that original rotor profile is made cutter, and the rotor of generate and this profile conjugation again is composed of rotor pump with the rotor of these two generates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101140584A CN100520068C (en) | 2006-10-26 | 2006-10-26 | Rotor pump and method for producing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101140584A CN100520068C (en) | 2006-10-26 | 2006-10-26 | Rotor pump and method for producing same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101169115A CN101169115A (en) | 2008-04-30 |
| CN100520068C true CN100520068C (en) | 2009-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101140584A Expired - Fee Related CN100520068C (en) | 2006-10-26 | 2006-10-26 | Rotor pump and method for producing same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100520068C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203362516U (en) * | 2013-03-18 | 2013-12-25 | 杜良俊 | Rotary compression device |
| CN104454512B (en) * | 2014-11-04 | 2016-08-24 | 中国农业大学 | A kind of multi-joint lobe pump |
| CN106678038A (en) * | 2017-02-15 | 2017-05-17 | 王映辉 | Double-triangular rotor pump |
| CN108591050B (en) * | 2018-04-08 | 2020-04-10 | 奥戈恩（广州）泵业有限公司 | Rotor pump |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2162546Y (en) * | 1993-08-28 | 1994-04-20 | 天津纺织工学院膜天膜技术工程公司 | Sanitary rotor pump |
| US5762484A (en) * | 1994-07-02 | 1998-06-09 | T&N Technology Limited | Gerotor type pump having its outer rotor shape derived from the inner rotor trochoid |
| CN1373297A (en) * | 2002-04-08 | 2002-10-09 | 华中科技大学 | Rotor of rotary piston type pump |
-
2006
- 2006-10-26 CN CNB2006101140584A patent/CN100520068C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2162546Y (en) * | 1993-08-28 | 1994-04-20 | 天津纺织工学院膜天膜技术工程公司 | Sanitary rotor pump |
| US5762484A (en) * | 1994-07-02 | 1998-06-09 | T&N Technology Limited | Gerotor type pump having its outer rotor shape derived from the inner rotor trochoid |
| CN1373297A (en) * | 2002-04-08 | 2002-10-09 | 华中科技大学 | Rotor of rotary piston type pump |
Non-Patent Citations (4)
| Title |
|---|
| 摆线转子齿形的成型磨削. 庄仪方.工艺与装备. 1983 |
| 摆线转子齿形的成型磨削. 庄仪方.工艺与装备. 1983 * |
| 罗茨泵‘8’字形转子渐开线曲面加工的探讨. 赵竹青，周毓明.西安联合大学学报，第6卷第4期. 2003 |
| 罗茨泵‘8’字形转子渐开线曲面加工的探讨. 赵竹青，周毓明.西安联合大学学报，第6卷第4期. 2003 * |
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| CN101169115A (en) | 2008-04-30 |
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