CN203796555U - Single-screw pump capable of balancing axial force and radial force - Google Patents
Single-screw pump capable of balancing axial force and radial force Download PDFInfo
- Publication number
- CN203796555U CN203796555U CN201420006041.7U CN201420006041U CN203796555U CN 203796555 U CN203796555 U CN 203796555U CN 201420006041 U CN201420006041 U CN 201420006041U CN 203796555 U CN203796555 U CN 203796555U
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- rotor
- planetary gear
- screw pump
- motion
- stator
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- Expired - Fee Related
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Abstract
The utility model discloses a single-screw pump capable of balancing axial force and radial force. The single-screw pump comprises a universal shaft, an upper transmission shaft, a stator, a rotor, a lower transmission shaft and planetary gear trains, wherein the planetary gear trains are arranged on the upper end and the lower end of the rotor, the upper end of the rotor is fixedly connected with a planetary gear of the upper planetary gear train through the upper transmission shaft, the lower end of the rotor is fixedly connected with the planetary gear of the lower planetary gear train through the lower transmission shaft, and the upper end of the upper transmission shaft is connected with the universal shaft. The motion input to the rotor is planetary motion which is consistent with the motion rule of the rotor. The planetary gears balance the radial force and capsizing moment caused by the rotor, the universal shaft balances the axial force, so that the stress of the rotor and the stator in the screw pump can be greatly improved, and the service life of the single-screw pump is greatly prolonged. The motion input to the rotor is planetary motion which is consistent with the motion rule of the rotor, so that the self locking phenomenon generated due to overlarge frictional angle between the rotor and the stator can be eliminated, the value range of design parameters of the single-screw pump is large, and short lead and large eccentric distance can be obtained.
Description
Technical field
The utility model relates to a kind of helical rotor pump.
Background technique
The motion of helical rotor pump rotor is planetary motion, i.e. rotation is revolved round the sun again.At present helical rotor pump is all by be connected the to come rotation of rotor driven of cardan shaft or flexible axle and rotor, and rotor engages with stator to be realized not only rotation but also revolves round the sun.This kind of drive has only been inputted the speed of autorotation of rotor, a cardan shaft balance axial force of rotor.In helical rotor pump, stator is subject to due to power such as tilting moment that rotor planetary motion produces, extruding force, frictional force.Rubber bushing in rubber bushing helical rotor pump is easily crowded flat distortion, weares and teares, comes unstuck, thereby causes helical rotor pump miss serious or lost efficacy, and greatly reduces the working life of rubber bushing helical rotor pump; Thereby the metal stator in all-metal screw pump and metallic rotator push each other, collide, wear and tear and cause helical rotor pump leakage seriously or lost efficacy, and greatly reduce the working life of full-metal single screw pump.Owing to only having inputted the speed of autorotation of rotor, in the time that the parameter designing of screw pump is unreasonable, the friction angle of rotor and stator will produce self-locking when excessive, causes screw pump not work.
Summary of the invention
The defect existing for above-mentioned background technology, proposed a kind of can balancing axial thrust and the helical rotor pump of radial force.
Below concrete technological scheme is described in detail.Can balancing axial thrust and the helical rotor pump of radial force, comprise that cardan shaft 1 uploads moving axis 4 stator 5 rotor 6 lower drive shaft 7 planetary gear train 8, described rotor is equipped with planetary gear train 8 in two ends Shang Xia 6, rotor 6 upper ends are connected with the shape star-wheel 2 of upper planet train 8 by uploading moving axis 4, lower end is connected by lower drive shaft 7 and the shape star-wheel 2 of lower planet train 8, uploads moving axis 4 upper ends and is connected with cardan shaft 1.
Further, in described planetary gear train 8, planet wheel 2 and the number of teeth ratio of sun gear 3 equal the ratio of 6 numbers of rotor and 5 numbers of stator.The characteristics of motion of planet wheel 2 is the same with the characteristics of motion of rotor 6, and planet wheel 2 rotor drivens 6 are realized not only rotation but also revolved round the sun.Simultaneously can balancing rotor 6 to rotate the centrifugal force producing be radial force to planet wheel 2, and cardan shaft 1 can balancing axial thrust.
Further, described can balancing axial thrust and the helical rotor pump of radial force also can be used for single screw motor.
Can balancing axial thrust and the helical rotor pump of radial force, the motion of its input is that planetary motion is the same with the characteristics of motion of rotor.Planet wheel balance the rotor radial force and the tilting moment that cause, cardan shaft balance axial force, the stressed of screw pump rotor and stator is greatly improved, be greatly enhanced working life.Because the motion of input is the same with rotor motion rule, therefore eliminate the locking phenomenon producing because the friction angle between rotor and stator is excessive, make the design parameter span of helical rotor pump become large, can get shorter helical pitch, larger throw of eccentric.Therefore can make the discharge capacity of helical rotor pump larger, length shortens.The rotor of screw pump is supported by two planet wheels, for all-metal screw pump, can make metallic rotator and metal stator circular gap more even, and flow is more stable; For rubber bushing screw pump, can make rubber bushing radial deformation stressed more even, the life-span is longer.
Brief description of the drawings
Accompanying drawing is can balancing axial thrust and the helical rotor pump structural drawing of radial force
Number in the figure: 1-cardan shaft; 2-planet wheel; 3-sun gear; 4-uploads moving axis; 5-stator; 6-rotor; 7-lower drive shaft; 8-planetary gear train.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is described in further detail.
Figure is can balancing axial thrust and the helical rotor pump structural drawing of radial force, comprise that cardan shaft 1 uploads moving axis 4 stator 5 rotor 6 lower drive shaft 7 planetary gear train 8, described rotor is equipped with planetary gear train 8 in two ends Shang Xia 6, rotor 6 upper ends are connected with the shape star-wheel 2 of upper planet train 8 by uploading moving axis 4, lower end is connected by lower drive shaft 7 and the shape star-wheel 2 of lower planet train 8, uploads moving axis 4 upper ends and is connected with cardan shaft 1.In planetary gear train 8, the number of teeth ratio of planet wheel 2 and sun gear 3 equals the ratio of 6 numbers of rotor and 5 numbers of stator.The characteristics of motion of planet wheel 2 is the same with the characteristics of motion of rotor 6, and planet wheel 2 rotor drivens 6 are realized not only rotation but also revolved round the sun.Simultaneously can balancing rotor 6 to rotate the centrifugal force producing be radial force to planet wheel 2, and cardan shaft 1 can balancing axial thrust.Transmission process: cardan shaft 1 rotates and drives upper planet wheel 2 to do planetary motion, and planet wheel 2 drives rotor 6 to do planetary motion by uploading moving axis 4.Upper and lower two planet wheels support and drive rotor 6 to do planetary motion.
Can balancing axial thrust and the helical rotor pump structure of radial force also can be used in single screw motor, highly pressurised liquid flows into from lower inlet, upper outlet is discharged, liquid can be converted to rotor kinetic energy, under the engagement of rotor 6 and stator 5 and under the effect of planetary gear train 8, rotor 6 is done planetary motion, and rotor 6 drives cardan shaft 1 to rotate, by cardan shaft 1 output kinetic energy.
Claims (2)
1. can balancing axial thrust and the helical rotor pump of radial force, comprise that cardan shaft (1) uploads moving axis (4) stator (5) rotor (6) lower drive shaft (7) planetary gear train (8), it is characterized in that: planetary gear train (8) is equipped with at the upper and lower two ends of described rotor (6), rotor (6) upper end is connected with the shape star-wheel (2) of upper planet train (8) by uploading moving axis (4), lower end is connected by lower drive shaft (7) and the shape star-wheel (2) of lower planet train (8), uploading moving axis (4) upper end is connected with cardan shaft (1).
2. according to claim 1 can balancing axial thrust and the helical rotor pump of radial force, it is characterized in that: in planetary gear train (8), planet wheel (2) and the number of teeth ratio of sun gear (3) equal the ratio of rotor (6) number and stator (5) number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420006041.7U CN203796555U (en) | 2014-01-06 | 2014-01-06 | Single-screw pump capable of balancing axial force and radial force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420006041.7U CN203796555U (en) | 2014-01-06 | 2014-01-06 | Single-screw pump capable of balancing axial force and radial force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203796555U true CN203796555U (en) | 2014-08-27 |
Family
ID=51378772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420006041.7U Expired - Fee Related CN203796555U (en) | 2014-01-06 | 2014-01-06 | Single-screw pump capable of balancing axial force and radial force |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203796555U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109707621A (en) * | 2018-12-18 | 2019-05-03 | 江阴爱尔姆真空设备有限公司 | A kind of single-screw (single screw) pump that stator is swung |
-
2014
- 2014-01-06 CN CN201420006041.7U patent/CN203796555U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109707621A (en) * | 2018-12-18 | 2019-05-03 | 江阴爱尔姆真空设备有限公司 | A kind of single-screw (single screw) pump that stator is swung |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140827 Termination date: 20150106 |
|
| EXPY | Termination of patent right or utility model |