CN203730301U - Elliptic non-circular gear-driven eight-blade differential pump - Google Patents
Elliptic non-circular gear-driven eight-blade differential pump Download PDFInfo
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- CN203730301U CN203730301U CN201420053280.8U CN201420053280U CN203730301U CN 203730301 U CN203730301 U CN 203730301U CN 201420053280 U CN201420053280 U CN 201420053280U CN 203730301 U CN203730301 U CN 203730301U
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- noncircular gear
- oval noncircular
- liquid
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- conjugation
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- 239000007788 liquid Substances 0.000 claims abstract description 82
- 230000021615 conjugation Effects 0.000 claims description 40
- 230000006837 decompression Effects 0.000 claims description 14
- 238000009434 installation Methods 0.000 claims description 8
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 238000010030 laminating Methods 0.000 claims description 3
- 230000010349 pulsation Effects 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 description 4
- 238000005457 optimization Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005213 imbibition Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
- Rotary Pumps (AREA)
Abstract
The utility model discloses an elliptic non-circular gear-driven eight-blade differential pump. The existing differential pump has the problems of difficulty in optimizing pressure pulsation, liquid trapping and the like. A first elliptic non-circular gear and a second elliptic non-circular gear are respectively fixedly installed on an input shaft, and a first conjugate elliptic non-circular gear meshes with the first elliptic non-circular gear; the first conjugate elliptic non-circular gear and a first impeller are respectively fixedly installed on the output shaft; a second conjugate elliptic non-circular gear and a second impeller are respectively fixed to a shaft sleeve, and the shaft sleeve is flexibly sheathed on the output shaft; a pump casing is sequentially provided with a first liquid discharge port, a first liquid suction port, a second liquid discharge port, a second liquid suction port, a third liquid discharge port, a third liquid suction port, a fourth liquid discharge port and a fourth liquid suction port in the circumferential direction; the first impeller and second impeller are respectively provided with four blades; and the inside of each blade is provided with a one-way relief valve. The differential pump has the advantages of large discharge capacity, stable flow rate and adjustable non-uniform velocity rules, and effectively solves the problem of liquid trapping.
Description
Technical field
The utility model belongs to displacement pump technical field, relates to blade differential pump, is specifically related to eight blade differential pumps that a kind of oval noncircular gear drives.
Background technique
The liquid pump that universal machine is conventional has reciprocating pump, plunger pump, diaphragm pump, roller pump and centrifugal pump, wherein: (post) plug pump of living has higher outlet pressure, but requires the sealing between piston and cylinder barrel reliable, and pressure surge is large; Diaphragm pump can produce a liquid stream more stably in the time of multi-cylinder, but complex structure; Roller pump delivery is uniformly in the time of stabilization of speed, and along with the raising of pressure, leakage rate increases, and the lifting rate of pump and efficiency are corresponding to be reduced; Centrifugal pump structure is simple, easily manufacture, but its discharge capacity is large, and pressure is low, for the less demanding occasion of working pressure.There is defect separately in these pumps, can't meet well the constant flow rate of part special mechanical requirement, the demand of high pressure.
Existing differential pump mainly contains following several according to the difference of driving mechanism:
Rotating guide-bar-gear type blade differential pump, its drive system is born alternate load, produces gear tooth noise, and each pair clearance also can cause impact noise when larger.
Universal-joint gear wheel mechanism drive vane differential pump, the input shaft of its universal joint mechanism and the angle of output shaft are key parameters that affects pump performance.This angle is larger, and pump delivery is also larger, and still, along with the increase at this angle, the flow pulsation aggravation of pump and the transmission efficiency of universal joint reduce.
Distortion eccentric circle noncircular gear drive vane differential pump, it is mainly eccentricity and deformation coefficient that its eccentric circle non-circular gear pitch curve is adjusted parameter, adjustment amount is limited, adjust precision not high, cause velocity ratio optimization, adjust inconvenience, design dumbly, be unfavorable for further optimal design, be difficult to optimize the problem such as pressure pulsation, tired liquid.
Summary of the invention
The purpose of this utility model is for the deficiencies in the prior art, eight blade differential pumps that provide a kind of oval noncircular gear to drive, and this blade differential pump displacement is large, pressure is high, stability of flow, compact structure; Oval non-circular gear pitch curve has six to adjust parameter, and the variable speed rule of its driving mechanism is easily adjusted, convenient function optimization; By unidirectional Decompression valves is installed in blade, when pressure limit, get through contiguous enclosed cavity, effectively solve the tired liquid problem of existing differential pump.
The utility model comprises driver part and differential pump parts.
Described driver part comprises driving gearbox, input shaft, output shaft, the first oval noncircular gear, the second oval noncircular gear, the oval noncircular gear of the first conjugation, the oval noncircular gear of the second conjugation and axle sleeve.Motor is connected with input shaft by coupling, and input shaft is the two side at driving gearbox by two bearings; Described the first oval noncircular gear and the second oval noncircular gear are all fixedly mounted on input shaft; The two ends of output shaft respectively by bearings on the tank wall of driving gearbox and pump case, the oval noncircular gear of the first conjugation is arranged on output shaft, and engages with the first oval noncircular gear; The oval noncircular gear of the second conjugation and the second impeller are all cemented on axle sleeve, and axle sleeve kink is on output shaft, and the oval noncircular gear of the second conjugation engages with the second oval noncircular gear.
Described differential pump parts comprise pump case, the first impeller, the second impeller and unidirectional Decompression valves.Described pump case along the circumferential direction offers the first liquid port, the first liquid sucting port, the second liquid port, the second liquid sucting port, the 3rd liquid port, the 3rd liquid sucting port, the 4th liquid port and the 4th liquid sucting port successively; The first liquid port, the second liquid port, the 3rd liquid port and the 4th liquid port are uniformly distributed along the circumference, and the first liquid sucting port, the second liquid sucting port, the 3rd liquid sucting port and the 4th liquid sucting port are uniformly distributed along the circumference; The first impeller is fixed on output shaft; The first described impeller and the second impeller are along the circumferential direction evenly equipped with four blades, the outer arced surface of every blade and the laminating of the inwall of pump case; Along the circumferential direction, the alternate setting of blade of the blade of the first impeller and the second impeller; All blade interior are all installed a unidirectional Decompression valves, and unidirectional Decompression valves direction is consistent with wheel rotation direction.
The first described oval noncircular gear and parameter and the structure of the second oval noncircular gear are in full accord, parameter and the structure of the oval noncircular gear of the first conjugation and the oval noncircular gear of the second conjugation are in full accord, and the first oval noncircular gear, the second oval noncircular gear, the oval noncircular gear of the first conjugation and the oval noncircular gear of the second conjugation are quadravalence noncircular gear; The initial installation phase difference of the initial installation phase difference of the first oval noncircular gear and the second oval noncircular gear, the oval noncircular gear of the first conjugation and the oval noncircular gear of the second conjugation is 45 °.
The beneficial effect the utlity model has is:
The utility model adopts oval non-circular gear mechanism, oval non-circular gear pitch curve has six to adjust parameter, compare existing distortion eccentric circle noncircular gear adjustable parameter many, therefore oval noncircular gear variable speed transmission rule is easily adjusted, and easily realizes the optimization of the performances such as differential pump delivery, pressure, flow.By unidirectional Decompression valves is installed in blade, when pressure limit, get through contiguous enclosed cavity, effectively solve the tired liquid problem of existing differential pump.The differential pump liquid sucting port and the liquid port that drive due to oval non-circular gear mechanism are uniformly distributed along the circumference, and radial equilibrium is good, and non-constant speed transmission is for rotatablely moving, and therefore operate steadily reliably, radially work loads balance, the controllability of pulsing are good; Blade is many, discharge capacity is large, and internal surface and the blade shape of pump case are simple, and volumetric efficiency is high.
Core institution of the present utility model is two pairs of different oval noncircular gears that phase place is installed, and parts are few, compact structure.
Brief description of the drawings
Fig. 1 is kinematic sketch of mechanism of the present utility model;
Fig. 2 is the overall structure sectional view of differential pump parts in the utility model;
Fig. 3 is the meshing relation schematic diagram of oval non-circular gear pitch curve in the time of initial mounting point in the utility model.
In figure: 1, driving gearbox, 2, input shaft, 3, output shaft, 4, the first oval noncircular gear, 5, the second oval noncircular gear, 6, the oval noncircular gear of the first conjugation, 7, the oval noncircular gear of the second conjugation, 8, axle sleeve, 9, coupling, 10, motor, 11-1, the first liquid port, 11-2, the first liquid sucting port, 11-3, the second liquid port, 11-4, the second liquid sucting port, 11-5, the 3rd liquid port, 11-6, the 3rd liquid sucting port, 11-7, the 4th liquid port, 11-8, the 4th liquid sucting port, 12, the first impeller, 13, the second impeller, 14, unidirectional Decompression valves.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
As illustrated in fig. 1 and 2, eight blade differential pumps that oval noncircular gear drives comprise driver part and differential pump parts.
Driver part comprises driving gearbox 1, input shaft 2, output shaft 3, the first oval noncircular gear 4, the second oval noncircular gear 5, the oval noncircular gear 6 of the first conjugation, the oval noncircular gear 7 of the second conjugation and axle sleeve 8.Input shaft 2 and output shaft 3 are separately positioned on the two ends of gear-box 1; Input shaft 2 is by two bearings in the two side of driving gearbox 1, and motor 10, by coupling 9, power is passed to the oval noncircular gear 4 of input shaft 2, the first and the second oval noncircular gear 5 is all fixedly mounted on input shaft 2; The two ends of output shaft 3 respectively by bearings on the tank wall of driving gearbox 1 and pump case 11, the oval noncircular gear 6 of the first conjugation is fixedly mounted on output shaft 3, and engages with the first oval noncircular gear 4; The oval noncircular gear 7 of the second conjugation and the second impeller 13 are all cemented on axle sleeve 8, and axle sleeve 8 kinks are on output shaft 3, and the oval noncircular gear 7 of the second conjugation engages with the second oval noncircular gear 5.
Differential pump parts comprise pump case 11, the first impeller 12, the second impeller 13 and unidirectional Decompression valves 14.On pump case 11, along the circumferential direction offer successively the first liquid port 11-1, the first liquid sucting port 11-2, the second liquid port 11-3, the second liquid sucting port 11-4, the 3rd liquid port 11-5, the 3rd liquid sucting port 11-6, the 4th liquid port 11-7 and the 4th liquid sucting port 11-8; The first liquid port 11-1, the second liquid port 11-3, the 3rd liquid port 11-5 and the 4th liquid port 11-7 are uniformly distributed along the circumference, and the first liquid sucting port 11-2, the second liquid sucting port 11-4, the 3rd liquid sucting port 11-6 and the 4th liquid sucting port 11-8 are uniformly distributed along the circumference; The first impeller 12 is fixed on output shaft 3; The first impeller 12 and the second impeller 13 are along the circumferential direction evenly equipped with four blades, the inwall laminating of the outer arced surface of every blade and pump case 11; Along the circumferential direction, the alternate setting of blade of the blade of the first impeller 12 and the second impeller 13, all forms an enclosed cavity between every adjacent two blades; All blades are all provided with a unidirectional Decompression valves 14, and two of unidirectional Decompression valves 14 is communicated with the enclosed cavity of these blade both sides respectively; The pressure release direction of all unidirectional Decompression valvess 14 is consistent with wheel rotation direction.
As shown in Figure 3, the structure of the first oval noncircular gear 4 and the second oval noncircular gear 5 is in full accord, the structure of the oval noncircular gear 6 of the first conjugation and the oval noncircular gear 7 of the second conjugation is in full accord, and the first oval noncircular gear 4, the second oval noncircular gear 5, the oval noncircular gear 6 of the first conjugation and the oval noncircular gear 7 of the second conjugation are quadravalence noncircular gear; The initial installation phase angle of the first oval noncircular gear 4 is
, the initial installation phase angle of the second oval noncircular gear 5 is
; The initial installation phase difference of the first oval noncircular gear 4 and the second oval noncircular gear 5, the oval noncircular gear 6 of the first conjugation and the oval noncircular gear 7 of the second conjugation is
-
its value is 45 °, the differential of realizing the first impeller 12 and the second impeller 13 rotates, make the volume cyclically-varying of differential pump enclosed cavity, produce discharge opeing at the first liquid port 11-1, the second liquid port 11-3, the 3rd liquid port 11-5 and the 4th liquid port 11-7, produce imbibition at the first liquid sucting port 11-2, the second liquid sucting port 11-4, the 3rd liquid sucting port 11-6 and the 4th liquid sucting port 11-8.Because the non-at the uniform velocity transmission of oval noncircular gear is continuous, at enclosed cavity, in complete when airtight, blade still has differential to rotate, and this will make enclosed cavity pressure exceed limit value, and vicinity enclosed cavity is got through pressure release by unidirectional Decompression valves 14, prevents from being stranded liquid.
The working principle of eight blade differential pumps that this ellipse noncircular gear drives:
Motor 10 is passed to the first oval noncircular gear 4 and the second oval noncircular gear 5 by coupling 9 and input shaft 2 by power.The first oval noncircular gear 4 engages with the oval noncircular gear 6 of the first conjugation, the second oval noncircular gear 5 engages with the oval noncircular gear 7 of the second conjugation, the oval noncircular gear 6 of the first conjugation is passed to the first impeller 12 by power by output shaft 3, the oval noncircular gear 7 of the second conjugation is passed to the second impeller 13 by power by axle sleeve 8, axle sleeve 8 with the second conjugation ellipse noncircular gear 7 fixed and kink on output shaft 3.The installation phase place difference of two pairs of oval noncircular gear pairs, the differential of realizing the first impeller 12 and the second impeller 13 rotates, thereby realizes imbibition and discharge opeing.
Claims (1)
1. eight blade differential pumps that oval noncircular gear drives, comprise driver part and differential pump parts, it is characterized in that:
Described driver part comprises driving gearbox, input shaft, output shaft, the first oval noncircular gear, the second oval noncircular gear, the oval noncircular gear of the first conjugation, the oval noncircular gear of the second conjugation and axle sleeve; Motor is connected with input shaft by coupling, and input shaft is the two side at driving gearbox by two bearings; Described the first oval noncircular gear and the second oval noncircular gear are all fixedly mounted on input shaft; The two ends of output shaft respectively by bearings on the tank wall of driving gearbox and pump case, the oval noncircular gear of the first conjugation is arranged on output shaft, and engages with the first oval noncircular gear; The oval noncircular gear of the second conjugation and the second impeller are all cemented on axle sleeve, and axle sleeve kink is on output shaft, and the oval noncircular gear of the second conjugation engages with the second oval noncircular gear;
Described differential pump parts comprise pump case, the first impeller, the second impeller and unidirectional Decompression valves; Described pump case along the circumferential direction offers the first liquid port, the first liquid sucting port, the second liquid port, the second liquid sucting port, the 3rd liquid port, the 3rd liquid sucting port, the 4th liquid port and the 4th liquid sucting port successively; The first liquid port, the second liquid port, the 3rd liquid port and the 4th liquid port are uniformly distributed along the circumference, and the first liquid sucting port, the second liquid sucting port, the 3rd liquid sucting port and the 4th liquid sucting port are uniformly distributed along the circumference; The first impeller is fixed on output shaft; The first described impeller and the second impeller are along the circumferential direction evenly equipped with four blades, the outer arced surface of every blade and the laminating of the inwall of pump case; Along the circumferential direction, the alternate setting of blade of the blade of the first impeller and the second impeller; All blade interior are all installed a unidirectional Decompression valves, and unidirectional Decompression valves direction is consistent with wheel rotation direction;
The first described oval noncircular gear and parameter and the structure of the second oval noncircular gear are in full accord, parameter and the structure of the oval noncircular gear of the first conjugation and the oval noncircular gear of the second conjugation are in full accord, and the first oval noncircular gear, the second oval noncircular gear, the oval noncircular gear of the first conjugation and the oval noncircular gear of the second conjugation are quadravalence noncircular gear; The initial installation phase difference of the initial installation phase difference of the first oval noncircular gear and the second oval noncircular gear, the oval noncircular gear of the first conjugation and the oval noncircular gear of the second conjugation is 45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420053280.8U CN203730301U (en) | 2014-01-27 | 2014-01-27 | Elliptic non-circular gear-driven eight-blade differential pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420053280.8U CN203730301U (en) | 2014-01-27 | 2014-01-27 | Elliptic non-circular gear-driven eight-blade differential pump |
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| Publication Number | Publication Date |
|---|---|
| CN203730301U true CN203730301U (en) | 2014-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420053280.8U Expired - Lifetime CN203730301U (en) | 2014-01-27 | 2014-01-27 | Elliptic non-circular gear-driven eight-blade differential pump |
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| CN (1) | CN203730301U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742405A (en) * | 2014-01-27 | 2014-04-23 | 浙江理工大学 | Eight-blade differential pump driven by elliptic non-circular gears |
-
2014
- 2014-01-27 CN CN201420053280.8U patent/CN203730301U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742405A (en) * | 2014-01-27 | 2014-04-23 | 浙江理工大学 | Eight-blade differential pump driven by elliptic non-circular gears |
| CN103742405B (en) * | 2014-01-27 | 2016-04-06 | 浙江理工大学 | Eight blade differential pumps that a kind of oval noncircular gear drives |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140723 Effective date of abandoning: 20160406 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140723 Effective date of abandoning: 20160406 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |