CN100516521C

CN100516521C - Dual-shaft variable-velocity rotary pump

Info

Publication number: CN100516521C
Application number: CNB2007101336024A
Authority: CN
Inventors: 赵祖良
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-09-24
Filing date: 2007-09-24
Publication date: 2009-07-22
Anticipated expiration: 2027-09-24
Also published as: CN101131156A

Abstract

The present invention relates to one kind of two-shaft speed variable rotation pump mainly for compressing air, liquid and other medium. The two-shaft speed variable rotation pump includes one pump shell, one gear box, one inner shaft inside the gear box and the pump shell, one hollow external shaft outside the inner shaft, one driving shaft inside the gear box, two driving eccentric gears on the driving shaft, two driven eccentric gear mounted separately on the inner shaft and the external shaft, and one fan-shaped block fixed onto the inner shaft. The two-shaft speed variable rotation pump can rotate continuously for long time, and has low noise, no need of oil lubricating, high efficiency and low manufacture cost.

Description

Dual-shaft variable-velocity rotary pump

Technical field

The present invention relates to a kind of pump, be specifically related to a kind of dual-shaft variable-velocity rotary pump.Be mainly used in air, liquid and other medium are compressed.

Background technique

Be used for the pump to air, liquid, require the pressure height, low noise can turn round continuously, long service life, and the efficient height, special occasions does not have wet goods.That the general pump that uses of existing industrial and mining enterprise has is reciprocating type, piston type, centrifugal, compression type, axial flow, mixed-flow and screw type etc.The need that these pumps have often keep in repair, and need to adopt oil lubrication; The efficient that has is low; The manufacture cost height that has.

Summary of the invention

The objective of the invention is to overcome above-mentioned deficiency, providing a kind of can long-time continuous turn round, and low noise need not oil lubrication, efficient height, the dual-shaft variable-velocity rotary pump of low cost of manufacture.

The object of the present invention is achieved like this: a kind of dual-shaft variable-velocity rotary pump, it is characterized in that it comprises pump case, gear case body, interior axle, outer shaft, driving shaft, active eccentricity gear, driven eccentricity gear and sector unit II,

Described pump case is fixedly connected on the gear case body rear side,

Axle is installed in gear case body and the pump case in described,

Described outer shaft is a hollow shaft, and outside the axle, the outer shaft front end placed in the gear case body in outer shaft placed by bearing housing,

Described driving shaft is installed in the gear case body,

Described active eccentricity gear has two, the front and back flat raft is fixedly mounted on the driving shaft, two eccentricity gears 180 ° of layouts that on driving shaft, misplace initiatively, described driven eccentricity gear also has two, be installed in respectively on the interior axle and outer shaft in the gear case body, two driven eccentricity gears are 180 ° of layouts of dislocation on interior axle and outer shaft, two active eccentricity gears respectively with the transmission of two driven eccentricity gear conjugation

Radially offer one on the outer shaft in the described pump case greater than 180 ° scalloped recess, make and leave next sector unit I less than 180 ° on the outer shaft, interior axle goes up and the scalloped recess corresponding position is fixed with a sector unit II, sector unit II on the interior axle is identical with the sector unit I on the outer shaft, leaves vacancy between sector unit II in so just making on the axle and the scalloped recess on the outer shaft to form a cavity for the medium filling.

Two two active eccentricity gears that are 180 ° of arranged in dislocation on the driving shaft carry out the conjugation rotation to two driven eccentricity gears on axle and the outer shaft in being installed in, when driving shaft Rotate 180 ° by gear rotate force in axle and outer shaft one a fast slow-speed move, axle and outer shaft every other one fast rotate in forcing during Rotate 180 ° again, and two sector units have the secondary clutch to finish secondary compression in driving shaft revolves when turning around spool and on the outer shaft like this.But to gas, all superchargings of hydraulic pressure.

The present invention can long-time continuous running, can noise-decreasing, realize need not the oil lubrication compression, simple in structure, fewly safeguard efficient height, low cost of manufacture.Can be used for the supercharging of liquid, gas.

Description of drawings

Fig. 1 is the end-face structure schematic representation of the utility model dual-shaft variable-velocity rotary pump.

Fig. 2 is the C-C cut-away view of Fig. 1.

Fig. 3 is two pairs of gear conjugation schematic representation.

Fig. 4 is an outer shaft structural representation of the present invention.

Fig. 5 is the left side view of Fig. 4.

Fig. 6 is the D-D cut-away view of Fig. 2.

Fig. 7 is motion state one schematic representation of Fig. 6.

Fig. 8 is motion state two schematic representation of Fig. 6.

Among the figure: active eccentricity gear 1, driven eccentricity gear 2, interior axle 3, outer shaft 4, gear case body 5, pump case 6, bonnet 7, gland 8, equilibrium block 9, end cap 10, driving shaft 11, replenishment valve I 12, replenishment valve II 13, sector unit II 14.

Embodiment

Referring to Fig. 1-2, the present invention relates to a kind of dual-shaft variable-velocity rotary pump, mainly form by pump case 6, gear case body 5, interior axle 3, outer shaft 4, driving shaft 11, active eccentricity gear 1, driven eccentricity gear 2 and sector unit II 14.

Described pump case 6 is fixedly connected on gear case body 5 rear sides,

Described in the axle 3 front ends by Bearing Installation on gear case body 5 front wall, the rear end by Bearing Installation in the axis hole of the bonnet 7 of pump case 6,

Described outer shaft 4 is a hollow shaft, and outside the axle 3, outer shaft 4 front ends placed in the gear case body 5 in outer shaft 4 placed by bearing housing, and outer shaft 4 rear ends are loaded on the front end of bonnet 7 by bearing housing,

Described gland 8 is embedded between the axis hole of interior axle 3 rear end periphery walls and bonnet 7,

In gear case body 5, driving shaft 11 is arranged in parallel in gear case body 5 with interior axle 3 described driving shaft 11 by bearing means, and end cap 10 lids place driving shaft 11 rear ends.

Described active eccentricity gear 1 has two, the front and back flat raft is fixedly mounted on the driving shaft 11, two eccentricity gears 1 180 ° of layouts that on driving shaft 11, misplace initiatively, promptly two initiatively overlapping behind relative another part Rotate 180 in the eccentricity gear 1 °, described driven eccentricity gear 2 also has two, be installed in respectively on the interior axle 3 and outer shaft 4 in the gear case body 5, two driven eccentricity gears 2,180 ° of layouts of dislocation on interior axle 3 and outer shaft 4, promptly overlapping behind relative another part Rotate 180 in two driven eccentricity gears 2 °, two initiatively eccentricity gear 1 respectively with two driven eccentricity gear 2 conjugation transmissions, as Fig. 3.

Referring to Fig. 2,4,5, place and radially offer one on the outer shaft 4 in the pump case 6 greater than 180 ° scalloped recess 4.1, make and leave next sector unit I 4.2 less than 180 ° on the outer shaft 4, be fixed with a sector unit II 14 with scalloped recess 4.1 corresponding positions on the interior axle 3, described sector unit II 14 is identical with sector unit I 4.2 on the described outer shaft 4, leaves vacancy to form a cavity for the medium filling between the sector unit II 14 in so just making on the axle and the scalloped recess 4.1 on the outer shaft.Corresponding to the scalloped recess of offering on the outer shaft 4 4.1, dislocation cuts a deweighting block G on the outer shaft 4 on scalloped recess 4.1 opposites, so that its when rotation dynamic balancing, corresponding to the sector unit II 14 on the axle 3 in this, be connected with an equilibrium block 9 at interior axle 3 rear end projections, equilibrium block 9 places outside the gland 8, to 14 balanced actions of sector unit II.

Referring to Fig. 6-8, sector unit 14 sidewalls on the sector unit I 4.2 of described outer shaft 4 and the interior axle 3 respectively are provided with on two fitting surfaces that 12, two replenishment valve I 12 of a replenishment valve I are arranged at two sector units respectively; Described pump case 6 shell walls be provided with a replenishment valve II 13 (for gas can).Sector unit I 4.2 quick rotation of outer shaft 4 wherein, sector unit II 14 slow rotation on the interior axle 3, the B face of sector unit II 14 on a face of the sector unit I 4.2 of outer shaft 4 and the interior axle 3 produces vacuum effect, replenishment valve I 12 plays supplementary function to it, the C point is the sector unit II 14 compression terminal points on the interior axle 3 on the pump case 6, when a face of the sector unit I 4.2 of outer shaft 4 (A piece) is on the C point, begin quick rotation, sector unit II 14 (B piece) B face on the interior axle 3 is on the C point, and the sector unit II 14 on the interior axle 3 begins slow rotation.

The center angle of two sector units is decided by two pairs of conjugation eccentricity gears, as Fig. 6,360 ° of center angle sums that deduct two sector units are exactly the angle that sector unit will compress work done, just two pairs of conjugation eccentricity gears, one fast one slow sector unit in 180 ° is offset the angle of additions, eccentricity gear is that coefficient of excentralization by eccentricity gear decides to the angular dependence of two sector units skews, if the number of teeth on one side of eccentricity gear is E, another side is F, and E＞F, during then a pair of eccentricity gear conjugation, the number of degrees that active eccentricity gear 1 turns over driven eccentricity gear when rotating 180 ° are E/F*180 °, another then has F/E*180 ° to eccentricity gear, first pair of conjugation eccentricity gear changeed E/F*180 °-180 ° than main shaft more, second pair of conjugation eccentricity gear lacks than main shaft has changeed F/E*180 °-180 °, like this additions of having changeed that changeed and few are exactly the angle that sector unit is wanted work done more, the fan-shaped angle of sector unit just has 360 ° to deduct the work done angle except that 2 (actual angle should be slightly less than this angle, in order to avoid collide).

Can reach following purpose by the way:

1, two pairs of eccentric conjugate gearss are 180 ° of layouts mutually, and the inertial force that is produced in rotation process is cancelled out each other, the gear operation balance.

2, can get on to weigh to outer shaft according to setting rotating speed, the method that adds equilibrium block on the interior axle reaches the dynamic balancing of sector unit, makes pump housing rotary balance.

3, the sealing to medium is with endoporus and cylindrical in compression process, the plane seals the mode of plane with face seal, both can be slit seal, also can be contact seal in filled back, its inner hole outer circularity plane just can reach its needed quality of fit with general general purpose machine tool.

4, this product belongs to positive displacement compressor, and pressure rises and is not subjected to the influence of rotating speed, as long as rotate once enclosing the compression ratio that can reach predetermined.

5, working surface need not oil lubrication, can carry to require the not occasion of lubricated oil pollution of medium.

6, according to pump to the difference of the medium that compressed, flow, pressure and to the warp-wise axial dimension choose reasonable of the fan-shaped angle of sector unit, interior outer shaft, the efficient of pump is improved, the warp-wise size of outer shaft under the condition of stressed permission, reducing as much as possible, the moment of sector unit work done is reduced, reach the labour-saving purpose.

Claims

1, a kind of dual-shaft variable-velocity rotary pump is characterized in that it comprises pump case (6), gear case body (5), interior axle (3), outer shaft (4), driving shaft (11), active eccentricity gear (1), driven eccentricity gear (2) and sector unit II (14),

Described pump case (6) is fixedly connected on gear case body (5) rear side,

Axle (3) is installed in gear case body (5) and the pump case (6) in described,

Described outer shaft (4) is a hollow shaft, and outer shaft (4) places outside the interior axle (3) by bearing housing, and outer shaft (4) front end places in the gear case body (5),

Described driving shaft (11) is installed in the gear case body (5),

Described active eccentricity gear (1) has two, the front and back flat raft is fixedly mounted on the driving shaft (11), two active eccentricity gears (1) are gone up 180 ° of layouts of dislocation at driving shaft (11), described driven eccentricity gear (2) also has two, be installed in respectively on the interior axle (3) and outer shaft (4) in the gear case body (5), two driven eccentricity gears (2) are gone up 180 ° of layouts of dislocation at interior axle (3) and outer shaft (4), two active eccentricity gears (1) respectively with two driven eccentricity gears (2) conjugation transmission

Radially offer one on the outer shaft (4) in the described pump case (6) greater than 180 ° scalloped recess (4.1), make and leave next sector unit I (4.2) less than 180 ° on the outer shaft (4), interior axle (3) is gone up and scalloped recess (4.1) corresponding position is fixed with a sector unit II (14), and the sector unit II (14) on the interior axle (3) is identical with the sector unit I (4.2) on the outer shaft (4).

2, a kind of dual-shaft variable-velocity rotary pump according to claim 1, it is characterized in that the sector unit I (4.2) of described outer shaft (4) and sector unit II (14) sidewall on the interior axle (3) respectively are provided with a replenishment valve I (12), two replenishment valve I (12) are arranged at respectively on two fitting surfaces of two sector unit I and sector unit II.

3, a kind of dual-shaft variable-velocity rotary pump according to claim 2 is characterized in that described pump case (6) shell wall is provided with a replenishment valve II (13).

4, a kind of dual-shaft variable-velocity rotary pump according to claim 1 and 2 is characterized in that corresponding to the scalloped recess of offering on the outer shaft (4) (4.1), goes up dislocation at the outer shaft (4) on scalloped recess (4.1) opposite and cuts a deweighting block.

5, a kind of dual-shaft variable-velocity rotary pump according to claim 1 and 2 is characterized in that corresponding to the sector unit II (14) on the axle (3) in this, and projection is connected with an equilibrium block (9) in interior axle (3) rear end.