CN203730302U - Fourier non-circular gear-driven eight-blade differential pump - Google Patents

Fourier non-circular gear-driven eight-blade differential pump Download PDF

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Publication number
CN203730302U
CN203730302U CN201420053348.2U CN201420053348U CN203730302U CN 203730302 U CN203730302 U CN 203730302U CN 201420053348 U CN201420053348 U CN 201420053348U CN 203730302 U CN203730302 U CN 203730302U
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China
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fourier
noncircular gear
impeller
liquid
port
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Withdrawn - After Issue
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CN201420053348.2U
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Chinese (zh)
Inventor
夏旭东
吴兴锋
徐高欢
陈建能
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Zhejiang University of Technology ZJUT
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Zhejiang University of Technology ZJUT
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Abstract

The utility model discloses a Fourier non-circular gear-driven eight-blade differential pump. Power is output by a motor and transmitted to the input shaft through a coupling; a first Fourier non-circular gear and a second Fourier non-circular gear are respectively fixed to the input shaft; a first conjugate Fourier non-circular gear is fixed to the output shaft and meshes with the first Fourier non-circular gear; a second conjugate Fourier non-circular gear and a second impeller are fixed through a shaft sleeve, and the shaft sleeve is flexibly sheathed on the output shaft; the second conjugate Fourier non-circular gear meshes with the second Fourier non-circular gear; a first impeller is fixed to the output shaft; 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 which has the same rotation direction as the blade. The differential pump has the advantages of large discharge capacity, stable flow rate and adjustable non-uniform velocity rules, and effectively solves the problems of pressure pulsation and liquid trapping in the traditional differential pump.

Description

Eight blade differential pumps that Fourier's noncircular gear drives
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 Fourier's 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 when multi-cylinder, but complex structure; Roller pump delivery is uniformly when 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 problems 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 Fourier's noncircular gear to drive, and this blade differential pump displacement is large, pressure is high, stability of flow, compact structure; Fourier's 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, during 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, first Fourier's noncircular gear, second Fourier's noncircular gear, the first conjugation Fourier noncircular gear, the second conjugation Fourier noncircular gear 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 first Fourier's noncircular gear and second Fourier's 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 first conjugation Fourier noncircular gear is fixedly mounted on output shaft, and with the first Fourier's noncircular gear engagement; The second conjugation Fourier noncircular gear and the second impeller are all cemented on axle sleeve, and axle sleeve kink is on output shaft; The second conjugation Fourier noncircular gear and the engagement of second Fourier's 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 all provided with four blades along circumferentially uniform; 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 blade rotation direction.
The structure of described first Fourier's noncircular gear and second Fourier's noncircular gear is in full accord, the structure of the first conjugation Fourier noncircular gear and the second conjugation Fourier noncircular gear is in full accord, and first Fourier's noncircular gear, second Fourier's noncircular gear, the first conjugation Fourier noncircular gear and the second conjugation Fourier noncircular gear are quadravalence noncircular gear; The initial installation phase difference of the initial installation phase difference of first Fourier's noncircular gear and second Fourier's noncircular gear, the first conjugation Fourier noncircular gear and the second conjugation Fourier noncircular gear is 45 °.
The beneficial effect the utlity model has is:
The utility model adopts Fourier's non-circular gear mechanism, Fourier's non-circular gear pitch curve has six to adjust parameter, compare existing distortion eccentric circle noncircular gear adjustable parameter many, therefore Fourier's 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, during 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 due to Fourier's non-circular gear mechanism, drive 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 Fourier's noncircular gears that phase place is installed, and parts are few, compact structure.
Accompanying drawing explanation
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 Fourier's non-circular gear pitch curve when initial mounting point in the utility model.
In figure: 1, driving gearbox, 2, input shaft, 3, output shaft, 4, first Fourier's noncircular gear, 5, second Fourier's noncircular gear, 6, the first conjugation Fourier noncircular gear, 7, the second conjugation Fourier noncircular gear, 8, axle sleeve, 9, coupling, 10, motor, 11, pump case, 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 Fourier's noncircular gear drives comprise driver part and differential pump parts.
Driver part comprises driving gearbox 1, input shaft 2, output shaft 3, first Fourier's noncircular gear 4, second Fourier's noncircular gear 5, the first conjugation Fourier noncircular gear 6, the second conjugation Fourier noncircular gear 7 and axle sleeve 8.Motor 10 is passed to input shaft 2 through coupling 9 by power, and input shaft 2 is the two side at driving gearbox 1 by two bearings; First Fourier's noncircular gear 4 and second Fourier's noncircular gear 5 are 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 first conjugation Fourier noncircular gear 6 is fixedly mounted on output shaft, and with first Fourier's noncircular gear 4 engagement; The second conjugation Fourier noncircular gear 7 and the second impeller 13 are all cemented on axle sleeve 8, and axle sleeve 8 kinks are on output shaft 3; The second conjugation Fourier noncircular gear 7 and second Fourier's noncircular gear 5 engagements;
Differential pump parts comprise pump case 11, the first impeller 12, the second impeller 13 and unidirectional Decompression valves 14; Pump case 11 along the circumferential direction offers 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 successively; 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 all provided with four blades along circumferentially uniform; Along the circumferential direction, the alternate setting of blade of the blade of the first impeller 12 and the second impeller 13; All blade interior are all installed a unidirectional Decompression valves 14, and unidirectional Decompression valves 14 directions are consistent with blade rotation direction.
As shown in Figure 3, the structure of first Fourier's noncircular gear 4 and second Fourier's noncircular gear 5 is in full accord, the structure of the first conjugation Fourier noncircular gear 6 and the second conjugation Fourier noncircular gear 7 is in full accord, and first Fourier's noncircular gear 4, second Fourier's noncircular gear 5, the first conjugation Fourier noncircular gear 6 and the second conjugation Fourier noncircular gear 7 are quadravalence noncircular gear; The initial installation phase angle of first Fourier's noncircular gear 4 is , the initial installation phase angle of second Fourier's noncircular gear 5 is ; The initial installation phase difference of first Fourier's noncircular gear 4 and second Fourier's noncircular gear 5, the first conjugation Fourier noncircular gear 6 and the second conjugation Fourier noncircular gear 7 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, 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 discharge opeing, 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, produce imbibition.Because the non-at the uniform velocity transmission of Fourier's noncircular gear is continuous, at enclosed cavity, in complete when airtight, blade still has differential to rotate, and this will make enclosed cavity pressure surpass limit value, and unidirectional Decompression valves 14 is got through pressure release by vicinity enclosed cavity, prevents from being stranded liquid.
The working principle of eight blade differential pumps that this Fourier's noncircular gear drives:
Motor 10 is passed to first Fourier's noncircular gear 4 and second Fourier's noncircular gear 5 by coupling 9 and input shaft 2 by power.First Fourier's noncircular gear 4 and the first conjugation Fourier noncircular gear 6 engagements, second Fourier's noncircular gear 5 and the second conjugation Fourier noncircular gear 7 engagements, the first conjugation Fourier noncircular gear 6 is passed to the first impeller 12 by power by output shaft 3, the second conjugation Fourier noncircular gear 7 is passed to the second impeller 12 by power by axle sleeve 8, and axle sleeve 8 and the second conjugation Fourier noncircular gear 7 kinks are on output shaft 3.The installation phase place of two pairs of Fourier's noncircular gear pairs is different, and 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 Fourier's 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, first Fourier's noncircular gear, second Fourier's noncircular gear, the first conjugation Fourier noncircular gear, the second conjugation Fourier noncircular gear 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 first Fourier's noncircular gear and second Fourier's 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 first conjugation Fourier noncircular gear is fixedly mounted on output shaft, and with the first Fourier's noncircular gear engagement; The second conjugation Fourier noncircular gear and the second impeller are all cemented on axle sleeve, and axle sleeve kink is on output shaft; The second conjugation Fourier noncircular gear and the engagement of second Fourier's noncircular gear;
Described differential pump parts comprise pump case, the first impeller, the second impeller and unidirectional Decompression valves; Described pump case counterclockwise 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 along circumference; 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 all provided with four blades along circumferentially uniform; 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 blade rotation direction;
The structure of described first Fourier's noncircular gear and second Fourier's noncircular gear is in full accord, the structure of the first conjugation Fourier noncircular gear and the second conjugation Fourier noncircular gear is in full accord, and first Fourier's noncircular gear, second Fourier's noncircular gear, the first conjugation Fourier noncircular gear and the second conjugation Fourier noncircular gear are quadravalence noncircular gear; The initial installation phase difference of the initial installation phase difference of first Fourier's noncircular gear and second Fourier's noncircular gear, the first conjugation Fourier noncircular gear and the second conjugation Fourier noncircular gear is 45 °.
CN201420053348.2U 2014-01-27 2014-01-27 Fourier non-circular gear-driven eight-blade differential pump Withdrawn - After Issue CN203730302U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103758757A (en) * 2014-01-27 2014-04-30 浙江理工大学 Eight-blade differential pump driven by Fourier noncircular gears
CN104455211A (en) * 2014-10-09 2015-03-25 浙江理工大学 Design method of high-order modified Fourier non-circular gear pair

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103758757A (en) * 2014-01-27 2014-04-30 浙江理工大学 Eight-blade differential pump driven by Fourier noncircular gears
CN104455211A (en) * 2014-10-09 2015-03-25 浙江理工大学 Design method of high-order modified Fourier non-circular gear pair
CN104455211B (en) * 2014-10-09 2017-01-25 浙江理工大学 Design method of high-order modified Fourier non-circular gear pair

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C14 Grant of patent or utility model
GR01 Patent grant
AV01 Patent right actively abandoned

Granted publication date: 20140723

Effective date of abandoning: 20160217

AV01 Patent right actively abandoned

Granted publication date: 20140723

Effective date of abandoning: 20160217

C25 Abandonment of patent right or utility model to avoid double patenting