CN103758757B - Eight blade differential pumps that a kind of Fourier's noncircular gear drives - Google Patents

Eight blade differential pumps that a kind of Fourier's noncircular gear drives Download PDF

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Publication number
CN103758757B
CN103758757B CN201410039570.1A CN201410039570A CN103758757B CN 103758757 B CN103758757 B CN 103758757B CN 201410039570 A CN201410039570 A CN 201410039570A CN 103758757 B CN103758757 B CN 103758757B
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fourier
noncircular gear
impeller
conjugation
liquid
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CN103758757A (en
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徐高欢
陈建能
卢形
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Zhejiang Xing Xing New Energy Technology Co Ltd
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Zhejiang University of Technology ZJUT
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Abstract

The invention discloses eight blade differential pumps that a kind of Fourier's noncircular gear drives.Power of the present invention is exported by motor, passes to input shaft through coupling; First Fourier's noncircular gear and second Fourier's noncircular gear are all fixed on input shaft; First conjugation Fourier noncircular gear is fixed on output shaft, and engages with first Fourier's noncircular gear; Second conjugation Fourier noncircular gear and the second impeller are by axle sleeve consolidation, and axle sleeve kink is on output shaft; Second conjugation Fourier noncircular gear engages with second Fourier's noncircular gear; First impeller is fixed on output shaft; First impeller and the second impeller are provided with four blades, and all blade interior all install a unidirectional Decompression valves, and unidirectional Decompression valves direction is consistent with blade rotation direction.Discharge capacity of the present invention is large, stability of flow, and variable speed rule easily adjusts, and effectively solves traditional differential pump pressure pulsation and tired liquid problem.

Description

Eight blade differential pumps that a kind of Fourier's noncircular gear drives
Technical field
The invention belongs to displacement pump technical field, relate to blade differential pump, be 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: live (post) fills in pump higher outlet pressure, but require that the sealing between piston and cylinder barrel is reliable, and pressure surge is large; Diaphragm pump can produce a more stable liquid stream when multi-cylinder, but complex structure; Roller pump delivery is uniform when stabilization of speed, and along with the raising of pressure, leakage rate increases, the lifting rate of pump and the corresponding reduction of efficiency; Centrifugal pump structure is simple, easily manufactures, but its discharge capacity is large, and pressure is low, for the less demanding occasion of working pressure.There is respective defect in these pumps, can't meet the constant flow rate of part special mechanical requirement, the demand of high pressure well.
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 bears alternate load, produces gear tooth noise, and also can cause impact noise when each pair clearance is 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 the key parameters affecting pump performance.This angle is larger, and pump delivery is also larger, but 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, its eccentric circle non-circular gear pitch curve adjustment parameter mainly eccentricity and deformation coefficient, adjustment amount is limited, Adjustment precision is not high, cause velocity ratio optimization, adjustment inconvenience, design dumb, be unfavorable for further optimal design, be difficult to optimize the problem such as pressure pulsation, tired liquid.
Summary of the invention
The object of the invention is for the deficiencies in the prior art, eight blade differential pumps that a kind of Fourier's noncircular gear drives be provided, 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 easily adjusts, convenient function optimization; By installing unidirectional Decompression valves in blade, during pressure limit, getting through contiguous enclosed cavity, effectively solving existing differential pump and being stranded liquid problem.
The present invention includes 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 passes through two bearings in the two side of driving gearbox; First described Fourier's noncircular gear and second Fourier's noncircular gear are all fixedly mounted on input shaft; The two ends of output shaft are respectively by bearings on the tank wall of driving gearbox and pump case, and the first conjugation Fourier noncircular gear is fixedly mounted on output shaft, and engages with first Fourier's noncircular gear; Second conjugation Fourier noncircular gear and the second impeller are all cemented on axle sleeve, and axle sleeve kink is on output shaft; Second conjugation Fourier noncircular gear engages with 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; 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; First impeller is fixed on output shaft; The first described impeller and the second impeller are all circumferentially uniform is provided with four blades; Along the circumferential direction, the blade of the first impeller and the alternate setting of blade of the second impeller; All blade interior all install 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 completely the same, the structure of the first conjugation Fourier noncircular gear and the second conjugation Fourier noncircular gear is completely the same, 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 that the present invention has is:
The present invention 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 easily adjusts, and easily realizes the optimization of the performances such as differential pump delivery, pressure, flow.By installing unidirectional Decompression valves in blade, during pressure limit, getting through contiguous enclosed cavity, effectively solving existing differential pump and being stranded liquid problem.The differential pump liquid sucting port driven due to Fourier's non-circular gear mechanism and liquid port are uniformly distributed along the circumference, and radial equilibrium is good, and non-constant speed drive is rotary motion, and reliable, the radial work loads that therefore operates steadily balance, pulsation controllability are good; Blade is many, discharge capacity is large, and simply, volumetric efficiency is high for the internal surface of pump case and blade shape.
Core institution of the present invention is two install Fourier's noncircular gear of phase place to difference, and parts are few, compact structure.
Accompanying drawing explanation
Fig. 1 is kinematic sketch of mechanism of the present invention;
Fig. 2 is the overall structure sectional view of differential pump parts in the present invention;
Fig. 3 is the meshing relation schematic diagram of Fourier's non-circular gear pitch curve when initial makeup location in the present invention.
In figure: 1, driving gearbox, 2, input shaft, 3, output shaft, 4, first Fourier's noncircular gear, 5, second Fourier's noncircular gear, 6, first conjugation Fourier noncircular gear, 7, second conjugation Fourier noncircular gear, 8, axle sleeve, 9, coupling, 10, motor, 11, pump case, 11-1, first liquid port, 11-2, first liquid sucting port, 11-3, second liquid port, 11-4, second liquid sucting port, 11-5, 3rd liquid port, 11-6, 3rd liquid sucting port, 11-7, 4th liquid port, 11-8, 4th liquid sucting port, 12, first impeller, 13, second impeller, 14, unidirectional Decompression valves.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
As illustrated in fig. 1 and 2, eight blade differential pumps that a kind of 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, first conjugation Fourier noncircular gear 6, second conjugation Fourier noncircular gear 7 and axle sleeve 8.Power is passed to input shaft 2 through coupling 9 by motor 10, and input shaft 2 passes through two bearings in the two side of driving gearbox 1; 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 are respectively by bearings on the tank wall of driving gearbox 1 and pump case 11, and the first conjugation Fourier noncircular gear 6 is fixedly mounted on output shaft, and engages with first Fourier's noncircular gear 4; Second conjugation Fourier noncircular gear 7 and the second impeller 13 are all cemented on axle sleeve 8, and axle sleeve 8 kink is on output shaft 3; Second conjugation Fourier noncircular gear 7 engages with second Fourier's noncircular gear 5;
Differential pump parts comprise pump case 11, first impeller 12, 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; 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; First impeller 12 is fixed on output shaft 3; First impeller 12 and the second impeller 13 is all circumferentially uniform is provided with four blades; Along the circumferential direction, the blade of the first impeller 12 and the alternate setting of blade of the second impeller 13; All blade interior all install a unidirectional Decompression valves 14, and unidirectional Decompression valves 14 direction is 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 completely the same, the structure of the first conjugation Fourier noncircular gear 6 and the second conjugation Fourier noncircular gear 7 is completely the same, and first Fourier's noncircular gear 4, second Fourier's noncircular gear 5, 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, first conjugation Fourier noncircular gear 6 and the second conjugation Fourier noncircular gear 7 is - its value is 45 °, the differential 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 Fourier's noncircular gear is continuous print, enclosed cavity be in complete airtight time, 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 tired liquid.
The working principle of eight blade differential pumps that this Fourier's noncircular gear drives:
Power is passed to the first Fourier's noncircular gear 4 and second Fourier's noncircular gear 5 by coupling 9 and input shaft 2 by motor 10.First Fourier's noncircular gear 4 engages with the first conjugation Fourier noncircular gear 6, second Fourier's noncircular gear 5 engages with the second conjugation Fourier noncircular gear 7, power is passed to the first impeller 12 by output shaft 3 by the first conjugation Fourier noncircular gear 6, power is passed to the second impeller 12 by axle sleeve 8 by the second conjugation Fourier noncircular gear 7, and axle sleeve 8 and the second conjugation Fourier noncircular gear 7 kink are on output shaft 3.The installation phase place of two pairs of Fourier's noncircular gear pairs is different, and the differential realizing the first impeller 12 and the second impeller 13 rotates, thus realizes imbibition and discharge opeing.

Claims (1)

1. eight blade differential pumps of Fourier's noncircular gear driving, 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 passes through two bearings in the two side of driving gearbox; First described Fourier's noncircular gear and second Fourier's noncircular gear are all fixedly mounted on input shaft; The two ends of output shaft are respectively by bearings on the tank wall of driving gearbox and pump case, and the first conjugation Fourier noncircular gear is fixedly mounted on output shaft, and engages with first Fourier's noncircular gear; Second conjugation Fourier noncircular gear and the second impeller are all cemented on axle sleeve, and axle sleeve kink is on output shaft; Second conjugation Fourier noncircular gear engages with 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 circumferentially 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; 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; First impeller is fixed on output shaft; The first described impeller and the second impeller are all circumferentially uniform is provided with four blades; Along the circumferential direction, the blade of the first impeller and the alternate setting of blade of the second impeller; All blade interior all install 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 completely the same, the structure of the first conjugation Fourier noncircular gear and the second conjugation Fourier noncircular gear is completely the same, 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 °.
CN201410039570.1A 2014-01-27 2014-01-27 Eight blade differential pumps that a kind of Fourier's noncircular gear drives Active CN103758757B (en)

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CN104314807A (en) * 2014-09-30 2015-01-28 何家密 Application of rotor with bisecting rotation angle coaxial assembly of multiple cams or gears to achieve synchronous equilibrium

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JP3919934B2 (en) * 1998-04-24 2007-05-30 株式会社小松製作所 Gear pump
CN2555425Y (en) * 2002-05-19 2003-06-11 哈尔滨工业大学 8-blade differential pump
CN1782393A (en) * 2004-12-01 2006-06-07 哈尔滨工业大学 Rotary guide bar-gear mechanism ariven blade differential pump
KR100873043B1 (en) * 2007-03-30 2008-12-09 삼성테크윈 주식회사 Gear case assembly
CN102305180B (en) * 2011-08-31 2013-07-31 国电联合动力技术有限公司 Control method and system of differential gear box speed regulation type synchro wind generating set
CN103291607B (en) * 2013-06-17 2015-11-04 浙江理工大学 The blade differential pump that intermittent gearing mechanism drives
CN203730302U (en) * 2014-01-27 2014-07-23 浙江理工大学 Fourier non-circular gear-driven eight-blade differential pump

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Effective date of registration: 20190925

Address after: 266101 Shandong Province, Qingdao city Laoshan District, Keyuan Road No. 1 23 storey block B room 2319

Patentee after: Qingdao fruit science and technology service platform Co., Ltd.

Address before: Hangzhou City, Zhejiang province 310018 Xiasha Higher Education Park No. 2 Street No. 928

Patentee before: Zhejiang University of Technology

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Effective date of registration: 20191226

Address after: 314000 Room 308, building 2, Jiaxing Yongming Petrochemical Co., Ltd., west of Pinghai Road, Zhapu Development Zone, port area, Jiaxing City, Zhejiang Province

Patentee after: Zhejiang Xing Xing New Energy Technology Co., Ltd.

Address before: 266101 Shandong Province, Qingdao city Laoshan District, Keyuan Road No. 1 23 storey block B room 2319

Patentee before: Qingdao fruit science and technology service platform Co., Ltd.