CN2229554Y

CN2229554Y - Rotary fluid pump

Info

Publication number: CN2229554Y
Application number: CN 95224029
Authority: CN
Inventors: 张善仿; 查睿梵
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-10-19
Filing date: 1995-10-19
Publication date: 1996-06-19
Anticipated expiration: 2005-10-19

Abstract

The utility model relates to a rotary fluid pump, which comprises an integral annular cylinder (3) which is composed of a fixed casing (1) which is provided with a cylindrical internal surface, and annular end covers (2) which are fixedly arranged on the both ends of the integral annular cylinder, wherein, the casing is supported by a power input shaft (8) which is provided with a driving mechanism which is composed of a planetary gear set and a four-connection symmetrical four-connecting rod set; the driving mechanism can achieve the complete balance both in static force and dynamic force. The inner circular opening of the closed annular cylinder which is connected with three-circle rings (6, 7) which are provided with a plurality of sets of fan-shaped partition boards can rotate and swing relatively to suck and discharge fluid; the proper position on the cylinder of the casing is provided with a fluid inlet and a fluid outlet. The fluid pump is used as a compressor for compressed air, is used as an air pump for vacuum pumping, and is used as a liquid pump when used for liquid. The utility model has the advantages of small size, light weight, high efficiency and smaller vibration.

Description

A kind of rotary fluid pump

The utility model relates to a kind of fluid variable capacity machinery, particularly relates to the variable displacement pump of a kind of rotary-piston or oscillating-piston.

Reciprocating type, centrifugal and axial flow three classes that fluid pump is divided into reciprocating typely are applicable to the high pressure difference and than small flow; Centrifugal because of being subjected to the restriction of centrifugal force, be applicable to medium pressure difference and intermediate flow; Axial flow is applicable to less pressure difference and especially big flow.When centrifugal and axial flow was used for liquid, rotating speed was subjected to the cavitation erosion restriction can not be too high, and will reach elevated pressures and must adopt multistagely, and structure is complicated more, and manufacture cost heightens.Shuttle piston-crankshaft structure can not dynamical balancing, and noise is especially big, and is and with the centrifugal of flow and axial-flow fluid pump relatively, bulky, very heavy.

The objective of the invention is in order to overcome the shortcoming of above-mentioned reciprocating pump, reduce the power imbalance of the acceleration and the piston-crankshaft structure of piston, design a kind of rotary fluid pump, suffered static(al), power and the fluid of its motion affacts the equal complete equilibrium at any time of pressure on the parts, noise is less, volume is also less, vibrates very little and the efficient height.

The purpose of this utility model realizes by following technological scheme, the rotary fluid pump comprise a fixing housing (1) be fixed on ring-type cylinder (3) on the housing and one rotatable be bearing on the housing and with the main shaft (8) of ring-type cylinder concentric, also comprise three annulus (6), (7), array dividing plate (4), (5), be contained in the transmission device that drives rotation of three annulus and relative swing on the main shaft, the appropriate position on the ring-type cylinder has the import (10) and the outlet (11) of fluid.

Said ring-type cylinder has the transverse section of Jiong shape, middle ring (6) and two side rings (7) seal the interior round mouth that opens wide of the transverse section of its Jiong shape, three annulus (6), array fan shape dividing plate (4) evenly is housed on the excircle (7), (5), preceding dividing plate (4) in every group is fixed on two side rings (7), they strike up partnership and rotate around the axle center synchronously, rear bulkhead in every group (5) is packed on the middle ring (6), also strike up partnership and rotate around the axle center synchronously, so ring-type cylinder (3), three annulus (6), (7) and dividing plate define the free space of variable volume, when the distance between the current rear bulkhead changes, cooperate fluid to advance, row of openings can be finished fluid and advance, row's process.

Said transmission device is to be made of planetary gear set and tetrad symmetry four connection rod set.Four connection rod set comprise with main shaft with spline be connected long-armed, rotatable fork on main shaft, the outer end of each fork links to each other with two side rings (7) with middle ring (6) respectively, arc bent axle (20) is supported with bearing in long-armed outer end, the outer end of bent axle all installs planetary pinion (18), planetary pinion (18) is meshed with sun gear (19) on being fixed on housing, and each connecting rod connects bent axle (20) and each fork respectively.The gear of sun gear in the planetary gear set (19) and planetary pinion (18) is than the ratio of integers that is necessary for greater than 1, and the sun gear in the present embodiment (19) is preferably 4: 1 with the gear ratio of planetary pinion (18).

Be equipped with on said three annulus (6), (7) and the sallop screen of planetary gear set gear than the group number that equates, preceding dividing plate (4) in every group must can cover fluid entry port (10), rear bulkhead in every group must can cover fluid discharge outlet (11), and each exhaust port is equipped with one-way valve outward.

When main shaft is driven the constant speed rotation, planetary pinion drives bent axle revolution and rotation, and by ring in the quadratic crank mechanism drive and side ring rotation, and ring produces relative swing with side ring in making, also do relative swing when therefore dividing plate being rotated in the ring-type cylinder, and the volume between the dividing plate before and after changing plays sucking and the effect of discharging like this.

Below in conjunction with drawings and Examples, rotary fluid pump of the present utility model is explained in detail:

Number of teeth wheel 4: 1, eight free space A, A ', B, B ', C, C ', D, D '.

Facing and cross-sectional schematic of Fig. 1 and Fig. 2 the utility model rotary fluid pump structure, free space A, B, C, D are in minimum volume, and A ', B ', C ', D ' are in maximum volume, and wherein number and mark and counterpart title are as follows:

(1) Gu Ding housing, (2) ring end cap, (3) whole ring-type cylinder, (4) preceding dividing plate, (5) rear bulkhead, annulus in the middle of (6), (7) both sides annulus, (8) power input shaft is a main shaft.(9) be fixed on bearing on the housing, (10) fluid inlet, (11) fluid output, (17) aiding support, (18) planetary pinion, the sun gear that (19) are fixing; Long-armed A ₁OA ₂, A ₁' OA ₂', two bent axle B ₁A ₁B ₂B ₂' A ₁' B ₂' and B ₃A ₂B ₄' B ₃' A ₂' B ₄', fork C ₁OC ₃, C ₂OC ₄, monolithic linkage B ₁C ₁, B ₁' C ₁', B ₂C ₂, B ₂' C ₂', B ₃C ₃, B ₃' C ₃', B ₄C ₄, B ₄' C ₄'.

The motion of Fig. 3 the utility model rotary fluid pump is made machine power and is resolved, and must use the projection drawing on main shaft OO vertical plane, and wherein number and mark are as follows with corresponding parts title:

(6) annulus in the middle of, (7) both sides annulus, (8) power input shaft is a main shaft, (9) are fixed on the bearing on the housing, (18) planetary pinion, (19) sun gear; Long-armed A ₁OA ₂, dress suite axle B ₁A ₁B ₂And B ₃A ₂B ₄, fork C ₁OC ₃And C ₂OC ₄, monolithic linkage B ₁C ₁, B ₂C ₂, B ₃C ₃, B ₄C ₄

The schematic representation of Fig. 4 and the used dress suite of Fig. 5 the utility model rotary fluid pump axle, wherein number is as follows with corresponding parts title:

(12) main shaft of bent axle, (13) center crank pivot, (14) both sides crank pivot, (15) both sides crank counterpoise disk, (16) center crank counterpoise disk.

The planetary pinion (18) of Fig. 6 the utility model rotary fluid pump rolls into 180 °, long-armed A ₁OA ₂Change and advance 45 °, with Fig. 1 contrast, fork C ₁OC ₃And C ₂OC ₄, connecting rod B ₁C ₁, B ₂C ₂, B ₃C ₃, B ₄C ₄And free space A, A ', B, B ', C, C ', the relative position of D, D ' and the schematic representation of volume-variation.Its medium size masurium and counterpart title and Fig. 1's is identical.

The working principle of rotary fluid pump of the present utility model is as follows:

1, motion

Among Fig. 3, A ₁And A ₂, B ₁And B ₃, B ₂And B ₄, C ₁And C ₃, C ₂And C ₄All be symmetric points, know: A by symmetrical definitions about axes O ₁OA ₂, B ₁OB ₃, B ₂OB ₄, C ₁OC ₃, C ₂OC ₄All be straight line, and OA ₁=OA ₂, OB ₁=OB ₃, OB ₂=OB ₄, OC ₁=OC ₃, OC ₂=OC ₄Use the congruent triangles theorem, and establish A ₁B ₁=A ₁B ₂, B ₁C ₁=B ₂C ₂, OC ₁=OC ₂, very easily prove A ₁B ₁=A ₁B ₂=A ₂B ₃=A ₂B ₄, B ₁C ₁=B ₂C ₂=B ₃C ₃=B ₄C ₄, OC ₁=OC ₂=OC ₃=OC ₄, with A ₂B ₃Be parallel to A ₁B ₁And leading 180 °.Straight line A ₁OA ₂It is long-armed to be that a single piece is called, and has spline to be contained on the main shaft (8) in its intermediate hole, and its axis is OO, straight line C ₁OC ₃And C ₂OC ₄Respectively be a single piece, its intermediate hole all is contained on the main shaft with bearing, all is called fork; A ₁B ₁, A ₁B ₂, A ₂B ₃, A ₂B ₄For crank constitutes the identical B of shape ₁A ₁B ₂And B ₃A ₂B ₄Two arc bent axles, shown in Fig. 2,4, its main shaft (12) is contained in long-armed ends A with bearing respectively ₁And A ₂, can complete equilibrium the ground rotation.B ₁C ₁, B ₂C ₂, B ₃C ₃, B ₄C ₄Be four connecting rods, be contained in two bent axle B with bearing respectively ₁A ₁B ₂, B ₃A ₂B ₄With two fork C ₁OC ₃, C ₂OC ₄Pivot on, then form four four connection rod set (comprising arm, crank, connecting rod and fork four members), four connection rod set OA ₁B ₁C ₁With OA ₁B ₂C ₂Shared long-armed OA ₁The section arm, and with four connection rod set OA ₂B ₃C ₃Shared long-armed A ₁OA ₂With fork C ₁OC ₃And symmetrically in axes O; Four connection rod set OA ₂B ₄C ₄With four connection rod set OA ₂B ₃C ₃Shared long-armed OA ₂The section, and with four connection rod set OA ₁B ₂C ₂Shared long-armed A ₁OA ₂With fork C ₂OC ₄, and symmetrical in axes O, be symmetrical in axes O and inter-related four groups of connection rod set so in pairs, can be described as four-bar linkage symmetry four connection rod set.Certainly, all parts of this four connecting rod symmetry four connection rod set are not in same plane, and shown in Figure 3 is projection on arbitrary vertical plane of main-shaft axis O, in fact long-armed A ₁OA ₂Account for a plane; Crank A ₁B ₁, A ₂B ₃, connecting rod B ₁C ₁, B ₂C ₃With fork C ₁OC ₃Account for a plane; Crank A ₁B ₂, A ₂B ₄, connecting rod B ₂C ₂, B ₄C ₄With fork C ₂OC ₄Account for another plane.Two bent axles can not only support end running, must be in another tetrad symmetry four connection rod set of main shaft left end device, about two groups of middle vertical plane YY that must be symmetrical in power input shaft, as shown in Figure 2.The main shaft of two bent axle left ends is by the long folds in a garment A of left end ₁' OA ₂' supporting; Center crank pivot (13) length of two bent axles is two times of both sides crank pivot (14) length; The middle vertical plane of center crank pivot (AA) is in the middle vertical plane YY of power input shaft axes O O, so the tetrad at two ends, left and right sides symmetry four connection rod set are symmetrical about middle vertical plane YY.Each bent axle is that two main shafts (12), two side pivots (14), a central pivot (13) and two side crank counterpoise disks (15) and two central pivot counterpoise disks (16) all form with the spline close fit, can be described as dress suite axle, as shown in Figure 4.Two also are contained on the power input shaft with spline to long-armed similar aiding support (17), and support two center crank counterpoise disks (16) with bearing, in case the stressed bending of bent axle.In order to be symmetrical in middle vertical plane YY, the fork C that shape is all identical ₁OC ₃And C ₁' OC ₃' must face toward the center crank pivot of bent axle, and be contained in the middle part of main shaft with bearing; Fork C ₂OC ₄And C ₂' OC ₄' respectively facing to two side crank pivot of bent axle, also all be contained on the main shaft with bearing.About have eight connecting rods, all be the identical single piece of shape.The connecting rod B on middle vertical plane YY right side ₁C ₁And B ₃C ₃Be contained in the last and fork C of center crank pivot (13) of two bent axles respectively with bearing ₁OC ₃C ₁And C ₃On two pivots; Connecting rod B ₂C ₂And B ₄C ₄Be contained in the last and fork C of outside crank pivot (14) of bent axle respectively with bearing ₂OC ₄C ₂And C ₄On two pivots; Also there is same device in the mechanism in middle vertical plane YY left side.So left and right sides tetrad symmetry four connection rod set are combined into one, are symmetrical in the axes O O and the middle vertical plane YY of main shaft.As fixing long-armed, only see earlier four connection rod set OA ₁B ₁C ₁Known have an one degree of freedom, in conjunction with four connection rod set OA ₁B ₂C ₂Do not influence number of degrees of freedom, increase by two four connection rod set in addition that are symmetrical in main-shaft axis OO again, being still only has one degree of freedom; About two tetrads symmetry, four connection rod set because of being the symmetrical junction integrator, so one degree of freedom is only arranged; Remove fixing long-armed constraint, increase the constraint of planetary gear set (comprising arm, planetary pinion, sun gear or ring gear three members), number of degrees of freedom is constant, promptly four of two bent axles outer ends respectively install identical two planetary pinions (18) of the shape flywheel (in figure do not paint) identical with shape additional with spline, two planetary pinions on middle vertical plane YY right side all mesh with the sun gear (19) (or ring gear) that is fixed on the frame, the i.e. shared sun gear of two planetary pinions (or ring gear), and two planetary gear set because of with the shared long-armed A of tetrad symmetry four connection rod set ₁OA ₂Be combined into one; Also there is same device in the mechanism in middle vertical plane left side.Though total movement mechanism increases by four planetary gear set, still be symmetrical in the axes O O and the middle vertical plane YY of main shaft, and one degree of freedom is only arranged, can transmission power and moment.Drive main spindle is rotated, about two long-armedly together rotate, make four planetary pinions about together lift-over on two fixing sun gears (or ring gear), two bent axles also together rotate with planetary pinion, drive fork C through connecting rod ₁OC ₃And C ₁' OC ₃' (the two is synchronous), C ₂OC ₄And C ₂' ₂OC ₄' (the two is synchronous) all rotated and relative swing arranged, and promptly the planet gear train makes whole driving mechanism rotations; Four connection rod set make fork C ₁OC ₃And C ₂OC ₄Swing relatively, this swing is the same with the to-and-fro motion of crank piston, can make fluid pump.The gear ratio of planetary gear set is necessary for integer, and modern for the pressure that makes fluid affact each parts also is symmetrical in axes O O and middle vertical plane YY, selecting gear ratio for use is 4: 1.Dividing plate group number must equal gear than number, as shown in Figure 1.Total movement mechanism is like very complicated.As comparing with 16 cylinder piston fluid pump, simplified manyly in fact, and motion flocks together, it is that volume is less that institute takes up space less; During with any angular velocity and angular acceleration rotation, arbitrary particle on arbitrary parts of motion all has its symmetrical particle, the centrifugal force of two particles and inertial force is opposite sign but equal magnitude all at any time, transmitting last phase through parts offsets, and the masterpiece that does not have vertical axis OO is used on the power input shaft, so static(al) and power is complete equilibrium at any time all, causes vibration extremely slight.

2, the running of fluid pump

Before illustrated that the ring-type cylinder seals its internal diameter opening by three annulus of adorning array fan shape dividing plate, connect the fork of tetrad symmetry four connection rod set in three annulus, be with fork C during actual the manufacturing ₁OC ₃And C ₁' OC ₃ ^-1, be molded into one as spoke and middle ring; Fork C ₂OC ₄Be molded into one with side ring, two side ring shapes are identical, make two and get final product.The gear ratio of planetary gear set has been chosen to be 4: 1, and dividing plate must have four groups, every group have before and after two fan shape dividing plates, four rear bulkheads encircle to strike up partnership in 90 ° are contained in dovetail joint and are synchronized with the movement; Four preceding dividing plates also are contained in to strike up partnership on two side rings with dovetail joint every 90 ° and are synchronized with the movement.Each fan shape dividing plate is all made hollow, to reduce its quality and rotary inertia.Required relative pivot angle (is maximum ∠ C ₁OC ₄With minimum ∠ C ₁OC ₄Poor) selected after, the long ratio of the bar that promptly available analytic method is tried to achieve four connection rod set, also provable crank A ₁B ₁Perpendicular to long-armed A ₁OA ₂, and pivot B ₁And C ₁When long-armed homonymy, ∠ C ₁OC ₄For minimum, ∠ C ₁OC ₂For greatly; When both sides, ∠ C ₁OC ₄For greatly, ∠ C ₁OC ₂For minimum, and long with bar than irrelevant.Modern for ease of explanation, special with long-armed A ₁OA ₂Be drawn on the Y-axis crank A ₁B ₁Perpendicular to long-armed, pivot B ₁And C ₁At long-armed homonymy, volume A, the B of four groups of dividing plates, C, D are minimum, are drawn on the XY axle; The front of dividing plate is a very big free space A ' before the back of A group fan shape rear bulkhead and the B group fan shape, and its split is divided the I quadrant equally, promptly with x axle angle at 45; Analogize in regular turn, greatly the split of free space B ', C ', D ' is all divided shared quadrant equally, as shown in Figure 1.Diagram is with being the situation of liquid, i.e. liquid pump, and each is organized dividing plate before the fan shape and is just covering liquid-inlet (10) on the ring-type pot cylinder; Each is organized the fan shape rear bulkhead and is just covering liquid outlet (11), and import and outlet separate.Minimum volume A between the fan shape dividing plate, B, C, D should reduce as far as possible, and maximum volume A ', B ', C ', D ' should increase as far as possible, but can not make import and export too little, in order to avoid have a strong impact on the outflow that flows to of liquid.Planetary pinion (18) has counter-clockwise lift-over slightly on sun gear (19), the just open liquid-inlet (10) of the rear edge of the preceding dividing plate of each group, and the open liquid outlet (11) of the rear edge of rear bulkhead, volume A, B, C, D are all cumulative big, and liquid flows into through import; Volume A ', B ', C ', D ' are all decrescence little, and wherein liquid is stressed and flow to predetermined altitude through outlet and one-way valve.Planetary pinion 180 ° of lift-over on sun gear, long-armed, three annulus and respectively organize dividing plate and all change into 45 ° (=180 °/4), crank A ₁B ₁Perpendicular to long-armed, pivot B1 and C are in long-armed both sides, and volume A, B, C, D all increase to greatly, and change 45 ° to volume D ', A ', B ', C ' are former occupies, and wherein are full of low pressure liquid; It is minimum that volume A ', B ', C ', D ' all reduce to, also change 45 ° to volume A, B, C, D are former occupies, wherein liquid is subjected to the motoring motion to reach the pressure that the fan shape dividing plate produces, and all rises to the predetermined altitude outflow as shown in Figure 5 through outflow opening and one-way valve.Because of liquid can not expand, and liquid outlet has the one-way valve liquid of need not worrying to flow backwards outward.

With being gas compressor, volume A ', B ', the interior gas of C ', D ' need be compressed to greater than predetermined compression ratio, each gas outlet must be shortened to counterclockwise direction as fluid pump; When gas enters, remain in pressurized gas in volume A, B, C, the D and must be expanded to and be lower than suction pressure, so each gas inlet must be shortened to counterclockwise direction, with liquid pump this difference only, other part-structures are all identical, and it is also like this to be used for air exhauster.

Claims

1, the present invention is a kind of rotary fluid pump, and it comprises that three annulus that are fixed on whole ring-type cylinder on the housing, the array dividing plate is housed, one are bearing on the housing with bearing and is that import and the outlet that the transmission device that drives rotation of three annulus and relative swing, appropriate location on the ring-type cylinder have fluid is housed on main shaft, the main shaft with the power input shaft of ring-type cylinder and three annulus coaxial lines; It is characterized in that also having:

(1) whole ring-type cylinder is to be made of with two end caps that are packed in the cylinder two ends the cylinder inner surface that is fixed on the housing, and its transverse section is a  shape; Interior round mouth with three annulus closed circular cylinders of ring-type cylinder coaxial line, array fan shape dividing plate evenly is housed on the excircle of three annulus, dividing plate is packed in to strike up partnership on two side rings and is synchronized with the movement before each of every group, and striking up partnership on the ring during each rear bulkhead is packed in is synchronized with the movement; Whole ring-type cylinder, three annulus and respectively organize dividing plate and limit free space A, B, C, D and A ', B ', C ', D ' etc., its volume has minimax to change, can inspiration and discharge fluid;

(2) transmission device is to be made of planetary gear set and tetrad symmetry four connection rod set, is contained on the main shaft, will drive the fan shape dividing plate group that torsion is passed to three annulus; Four groups of four identical connection rod set shared one long-armed and two be contained in fork on the main shaft with bearing, each connection rod set is formed tetrad symmetry four connection rod set that are symmetrical in main-shaft axis, totally two groups, be packed in two ends, the main shaft left and right sides respectively and strike up partnership, and be symmetrical in the middle vertical plane of main shaft; Each supports an arc bent axle with bearing two long-armed outer ends, four identical connecting rods are housed on each bent axle, a flywheel and a planetary pinion are all respectively adorned with spline in four outer ends of two bent axles, divide about middle vertical plane, each side two planetary pinion meshes with the left and right sides sun gear that is fixed on the frame housing respectively.Two shared long-armed planetary gear set and tetrad symmetry four connection rod set are bonded together;

Dividing plate with planetary gear set gear ratio equal sets number is housed on (3) three annulus, the import that dividing plate must can cover fluid before each of every group, the outlet that each rear bulkhead must can cover fluid, each outflow opening is equipped with one-way valve outward.

2, as the said rotary fluid pump of claim 1, it is characterized in that said sun gear and planetary gear than the integral multiple that is necessary for greater than 1, said dividing plate group number is identical with it.