CN1357682A

CN1357682A - Oscillating-blade hydraulic pump and motor

Info

Publication number: CN1357682A
Application number: CN01145525A
Authority: CN
Inventors: 彭利; 彭凌宇
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-12-28
Filing date: 2001-12-28
Publication date: 2002-07-10

Abstract

The rotary displacement hydraulic pump and motor consist of oscillating blades hinged to peripheral of rotating body, rotor with servo ring and stator with sliding bearing members. It may be a constant rate pump and motor with fixed eccentricity between the servo ring shaft and the rotor shaft or a variable displacement pump and motor with adjustable eccentricity between the servo ring shaft and the rotor shaft. This kind of hydraulic pump and motor have the same use as available plunger, gear and blade hydraulic pump and motor but simpler structure, low cost, higher displacement efficiency and longer service life.

Description

Oscillating-blade hydraulic pump and motor

One, technical field: the invention relates to a kind of rotary displacement oil hydraulic pump and motor.

Two, background technique: a few days ago, I am 00119358.9 in application number, name is called in the application for a patent for invention of " rotary displacement fluid press defeated and transmission device ", has proposed a kind of hinged oscillating vane of hollow solid of rotation by rotor as the rotary displacement oil hydraulic pump of transfiguration member and the technological scheme of motor.Oil hydraulic pump and motor according to this scheme structure are compared with the other types oil hydraulic pump and the motor of existing purposes of the same race, though it is simple in structure, advantage of low manufacturing cost is obvious, but, on the concrete solution that guarantees synthetic operation performances such as its volumetric efficiency and operating life, still be weak.

Three, summary of the invention: technical problem to be solved by this invention is, based on above-mentioned background technique, remedies its shortcoming, constructs that a kind of concrete structure more becomes rationally, volumetric efficiency is high, long working life, broad-spectrum oscillating-blade hydraulic pump and motor.The solution of this technical problem is realized by following scheme:

This oil hydraulic pump and motor are sealed rotor by stator and are constituted complete machine on the whole; Wherein: outer axial face is provided with the main body that constitutes rotor along the solid of rotation of Zhou Junbu free bearing, and its each free bearing is hinged with the oscillating vane butt respectively, simultaneously by the follow-up ring collar, constitutes rotor thus; This rotor is sealed by the stator that is made of the equipped follow-up ring sliding bearing of the inner chamber of periphery body member, rotor-end axle sliding bearing, rotor both sides end face packing component: in this kind structure, axle center with follow-up ring bearing is quantitative hydraulic pump and motor with respect to fixedly off-centre is provided with structure in rotor revolution axle center, and what the axle center with follow-up ring bearing turned round that the axle center can adjust the offset structure continuously with respect to rotor is volume adjustable hydraulic pump and motor.

Its structural feature is, in rotor, the outer circumferential face of solid of rotation, the circumferential uniform free bearing that is used for hinged oscillating vane in edge is in middle part vertically, the position, both sides that connects the free bearing layout area is provided with the identical support end axle of structure, this end axle stationary fit suit high hardness, fine finishing, anti-wear sleeve (available rolling bearing steel is done); In stator, constitute the main body of stator by periphery body, preceding end plate, back end plate and follow-up ring bearing components; Wherein, the outer circumferential face of periphery body, the linkage structure of front end setting and equipped machinery assembling, the relevant position at middle part or rear portion is provided with the advancing of working solution, drain line interface; Its bore, intermediate portion vertically is provided with the equipped structure of equipped follow-up ring bearing components, the position, both sides that connects this position is the cooperating structure with forward and backward end plate external diameter, outside two end part the equipped groove of snap ring that cross section is a wedge shape is set, perhaps an end is provided with the equipped groove of snap ring, and the other end is provided with the retaining edge; Before, the basic structure of back end plate is identical, generally select high-quality wear-resistant cast iron material integral manufacturing for use, its external diameter is the transition fit axial plane that cooperates vestibule with the periphery body, it is moving that endoporus setting cooperates with rotor solid of rotation two end axles axle sleeve, static pressure associating sliding bearing structure, mobile equilibrium profile shaft terminal tool sealing component in the dress in equipped, promptly, in bearing working face, with follow-up ring bearing eccentric direction line is that the axis of symmetry is symmetrical arranged two static pressure vallecular cavities, two vallecular cavities lead to the working solution flow groove of its side panel in the face of side respectively by guide groove, connect the annular groove of the arranged outside of this bearing working face to mechanical seal member back side overcurrent; The mechanical seal member is the stationary ring made with graphite impregnation epoxy resin machinery sealing material and constitutes with (having spring and sealing function concurrently) sealing elastic sleeve that nitrile butadiene rubber is made, is fitted to the bore ends (cooperating realization mechanical seal with the stationary ring side end face by rotor-end axle axle sleeve side end face) in this bearing working face outside; This end plate outboard end is provided with the outside thread that cooperates with the snap ring locking swivel nut; In the inboard card that cooperates with the rotor-side end face, with follow-up ring bearing eccentric direction line place diameter is that axis of symmetry setting is advanced, discharge opeing flow groove, simultaneously, with this axis of symmetry serves as that the footpath is provided with the twice angle amplitude fan-shaped water jacket suitable with rotor swing vane group spacing to the midline, connecing outer bottom land is provided with the angle amplitude between two parties and is equivalent to this groove 1/2, circumferentially cross section is trapezoidal fan-shaped inside groove, the circumferential supported spring of clamping in the middle of inside groove is equipped a pair of, by teflon filling graphite or graphite impregnation epoxy resin machinery sealing material make every the packing piece, water jacket equipped by silicon carbide or graphite impregnation epoxy resin machinery sealing material make circumferentially every the envelope piece (after the complete machine assembling,, under the support of circumferential supported spring, promote circumferentially to fit tightly in the rotor-side end face every the packing piece) every the envelope piece; The integral installation distribution structure is, the follow-up ring external diameter suit main body of rotor by wear-resistant cast iron material make, bearing working face is provided with static pressure vallecular cavity and guide groove, be coated with in case of necessity, the follow-up ring bearing components of plating or compound anti-attrition, wearing layer, two ends end axle sleeve is adorned forward and backward end plate, be fitted to the inner chamber of periphery body in the lump, insert segmented in the equipped groove of periphery intracoelomic cavity two end part snap ring and install snap ring, by snap ring locking swivel nut male cone (strobilus masculinus) at (back) end plate outside thread place before being threaded onto and cooperating of the segmented snap ring internal diameter conical surface, with periphery body and the fixing formation of its inner chamber member chucking complete machine; Under the working state, two static pressure sap cavities of rotor follow-up ring bearing are linked up through guide groove and rotor homonymy active chamber respectively, and the dynamic and static hydraulic coupling of formation makes the inside and outside footpath of follow-up ring force in radial tend to be balanced; Two static pressure sap cavities of rotor-end axle bearing are linked up through guide groove and rotor offside active chamber respectively, and the dynamic and static hydraulic coupling of formation makes whole rotor force in radial tend to be balanced; The vallecular cavity behind packing piece compression supported spring and in being somebody's turn to do of the fan-shaped inside groove of (back) end plate was linked up before the pressure working solution promoted via the flow groove, the static pressure that forms circumferentially keeps closely pasting mutually every envelope piece and rotor-side end face through promoting every the packing piece, and realization rotor-side end face advances, the effective packing between discharge opeing two operation intervals.

Adopt the beneficial effect of such scheme to be:

1, compare with at present general main products such as plunger, gear, blade hydraulic pump and motor, simple in structure, intensive, compact, volume is little, to process, assembly technology is simple relatively, cost of production significantly reduces.

2, rotor follow-up ring bearing and end axle bearing all adopt the body inner gateway, unite sliding bearing structure from feed flow, active and static pressure, and bearing working face is fully lubricated, and bearing capacity is passive, the fluid pressure partial offset; The rotor-side end face advances, the circumferential exclusion seal between drainage region adopts by working fluid pressure and keeps circumferentially sealing reliable and stable every envelope piece and rotor-side end face float applying and compensate for wear sealing configuration; These are enough to guarantee the low fault of its realization, long-life service behaviour.

3, all and oscillating vane sealed working face movingly all form theoretic gap-free sealed structure (only depositing lubricant film), even if general wearing and tearing take place, also can obviously not influence sealing effect, this is enough to guarantee that it has long period, stable high volume efficient.

4, installation, use, easy to maintenance, expense is low, and this is providing adequate condition for it progressively substitutes to have now with the similar purposes product of main flow.

Four, description of drawings: Fig. 1 is that facing of a quantitative hydraulic pump embodiment of the present invention and horizontal stroke (partly) cut open tectonic maps, and Fig. 2 is the vertical profile tectonic maps of this embodiment by position shown in Figure 1; Fig. 3 is this embodiment's a stator component, and the front view of preceding end plate, Fig. 4, Fig. 5 are respectively the sectional views by position shown in Figure 3; Fig. 6 is this embodiment's a stator component, and the front view of back end plate, Fig. 7, Fig. 8 are respectively that the sectional view by position shown in Figure 6: Fig. 9 is this embodiment's a stator component, and the front view of fixing eccentric follow-up ring bearing, Figure 10 are that it is overlooked and vertical (partly) sectional view; Figure 11 is an a volume adjustable hydraulic pump embodiment's of the present invention cross-sectional tectonic maps, and Figure 12 is the vertical profile tectonic maps of this embodiment by position shown in Figure 11; Figure 13 is this embodiment's a stator component, the front view of end plate (forward and backward two end plate structures are identical), Figure 14, Figure 15 are respectively that the sectional view by position shown in Figure 13: Figure 16 is the shared fittings of two embodiment's stators, and the front view of segmented snap ring, Figure 17 are its cross section view; Figure 18 can move axle center follow-up ring bearing, and Figure 19 is that it is overlooked and vertical (partly) sectional view.

Five, mode of execution: main mode of execution of the present invention is oil hydraulic pump and the motor engineering goods that are suitable for according to the technique scheme structure.

The exemplary embodiments structure of quantitative hydraulic pump and motor as shown in Figure 1 and Figure 2.The figure mark: 1 is solid of rotation, and 2 is oscillating vane, and 3 is follow-up ring, 4 are fixing eccentric follow-up ring bearing, and 5 is the periphery body, and 6 are the location flat key, 7 is the segmented snap ring, and 8 is the snap ring locking swivel nut, and 9 is preceding end plate, 10 are the rubber seal elastic sleeve, 11 is mechanical sealing static ring, and 12 are end axle axle sleeve, and 13 is positioning dowel, 14 is the back end plate, and 15 are (advance, discharge opeing) pipe joint.The concrete structure of mark 9 such as Fig. 3, Fig. 4, shown in Figure 5: in working solution flow annular groove a and b being set with rotor side fitting surface, be provided with inside and outside fan groove along follow-up ring bearing working face eccentric direction line place diameter, order is equipped every packing piece 901, u shape spring 902, circumferentially every envelope piece 903 in the groove, with the flow annular groove be divided into into, discharge opeing two flow groove a and b, the bearing working face of endoporus is provided with static pressure groove c and d, c and d through guide groove e and f stride across respectively inside groove and fan-shaped outside subslot logical, the stationary ring 11 of the equipped mechanical sealing element in the end of endoporus and sealing elastic sleeve 10; The concrete structure of mark 14 such as Fig. 6, Fig. 7, shown in Figure 8: in chamfered groove being set with rotor side fitting surface periphery, equipped flexible seal ring o in the groove, be symmetrical in that follow-up ring bearing working face eccentric direction line place diameter is provided with into, discharge opeing flow groove g and h, chute i and j and assembling back and the flowing hole k and the l that advance, the discharge opeing interface communicates were set in the two flow grooves; Inner hole structure and mark 9 are basic identical, and difference is, two static pressure grooves of bearing working face are logical in the face of side flow groove through guide groove m and n and its side panel respectively; The concrete structure of mark 4 such as Fig. 9, shown in Figure 10: in the follow-up ring bearing working face, be symmetry axis with its biased direction line place, axle center diameter, the guide groove q that is symmetrical arranged static pressure groove p and communicates with it, the concrete structure of mark 7 such as Figure 16, shown in Figure 17.

This embodiment's structural feature is, the anterior mounting flange that is connected with transmission device that is provided with of the outer circumferential face of its periphery body, the rear portion is provided with that working solution advances, comb road interface, and endoporus is band retaining edge, rear portion, and the front portion is provided with the isometrical cylindrical cavity that cross section is the equipped groove of snap ring of wedge shape; The outer end of preceding end plate is provided with the outside thread equipped with the snap ring locking swivel nut, and the card that cooperates with the rotor side is provided with shoulder, shoulder axial plane and follow-up ring brearing bore transition fit; The card that cooperates with the rotor side of back end plate is symmetrical in that follow-up ring bearing eccentric direction line place diameter symmetry is provided with into, discharge opeing two flow grooves, chute was set respectively in the two flow grooves links up with the flowing hole that radially is provided with; Assembly features is, rotor periphery suit follow-up ring bearing, and two ends end axle is equipped with forward and backward end plate member, the coaxial bore that is fitted to the periphery body; The snap ring locking swivel nut of end plate outside promotes to place snap ring in the equipped groove of snap ring that periphery body body inner member is compressed to install before being threaded onto; Wherein, circumferentially limit through equipped flat key therebetween between preceding end plate and follow-up ring bearing and the periphery body, back end plate circumferentially limits by positioning dowel equipped between its card and the follow-up ring bearing side; (for example retain an amount of matching gap between preceding end plate and rotor side fitting surface, 0.2 millimeter), in its fan-shaped water jacket circumferentially every the spring-supported applying that under the promotion of packing piece and working fluid pressure, remains with the rotor-side end face of envelope piece being subjected in inside groove, advance, arrange circumferentially effectively sealing of operation interval to realize it.

The exemplary embodiments structure of volume adjustable hydraulic pump such as Figure 11, shown in Figure 12, basic structure is identical with above-mentioned quantitative hydraulic pump and motor, and main difference is its follow-up ring bearing components and dependency structure thereof.Mark among the figure; 05 is the periphery body, and 04 is the follow-up ring bearing, and 41 is every strip of paper used for sealing, and 42 for adjusting screw rod, 43 for adjusting nut, and 44 is supported spring, and 45 is plug screw, O, P are respectively working solution suction, the comb road interface that is arranged at 05 outer circumferential face, and 09 is end plate (forward and backward end plate structure is identical), and 06 is positioning dowel; The concrete structure of mark 09 such as Figure 13, Figure 14, shown in Figure 15: basic identical with mark 9, difference is that the external diameter of its flow groove y and z need be suitable with the vestibule diameter at the equipped follow-up ring position of periphery body, the concrete structure of mark 04 such as Figure 18, shown in Figure 19; In bearing working face, be symmetrical in desaxe line of direction place diameter static pressure groove s and guide groove t are set, two cooperate with 04 dovetail groove through its dovetail every strip of paper used for sealing 41 and to be fitted to its periphery, rigging position is, the sealing bar overlaps with bearing working face desaxe line of direction place diameter towards the side plane of imbibition operation interval, two supporting plane x of 04 periphery setting are in same plane, and parallel with its desaxe line of direction.

This embodiment's structural feature is, is provided with in the periphery middle part of its periphery body that working solution advances, comb road interface, adjusts screw rod and nut mount inlet, supported spring and plug screw mount inlet; The axle center of its bore intermediate portion is along follow-up ring desaxe direction, the distance that is equivalent to follow-up ring bearing maximum eccentricity amount 1/2 with respect to rotor revolution axis deviation, the chamber wall is provided with the equipped groove every strip of paper used for sealing (41) that contains dress follow-up ring periphery, the chamfered groove that cooperates with supporting plane (x), but to be used for the follow-up ring bearing components of equipped axle center rectilinear translation; The both sides at this position are axle center and rotor revolution axle center vestibule coaxial, that cooperate with two end plate external diameters; Outside two end part be provided with the equipped groove of segmented snap ring; By be assemblied in follow-up ring bearing in the periphery body body and periphery thereof every strip of paper used for sealing, adjust screw rod and nut, supported spring and plug screw and match and constitute working solution discharge capacity regulating mechanism; Package assembly is, rotor periphery suit follow-up ring bearing components is loaded on the inner chamber of periphery body in the lump, identical two end plates of structure are set in two ends of rotor end axle, are fitted to the inner chamber of periphery body by both sides, snap ring is equipped with in the groove and inserts the segmented snap ring, is compressed through the segmented snap ring by the snap ring locking swivel nut to install; Wherein, follow-up ring bearing periphery two every strip of paper used for sealing equipped groove is divided into two semi-ring chambeies with the ring cavity between periphery intracoelomic cavity and follow-up ring bearing outer circumferential face by it, inhale with working solution respectively in two semi-ring chambeies, row's interface is linked up and inhale, arrange active chamber respectively with rotor by the flow groove of end plate card is communicated with; Adjustment screw rod and nut, supported spring and plug screw by the periphery body of being packed into by opposite direction limit the follow-up ring BEARING SHAFT by desired location, adjust screw rod by turn and adjust the offset amplitude of follow-up ring BEARING SHAFT continuously with respect to rotor revolution axle center, with finish its working solution discharge capacity 0 to adjusting continuously between the maximum value.

Be not difficult to find out, above-mentioned two embodiments' structure and performance with compare at plunger, gear, blade hydraulic pump and the motor product of usefulness at present, have clear superiority, possess the sufficient and necessary condition that progressively replaces, have the good prospect of the reality and potentiality of the exploitation implemented.

Claims

1, a kind of rotary displacement oil hydraulic pump and motor on overall structure, are sealed rotor by stator and are constituted complete machine; Wherein: outer axial face is provided with the main body that constitutes rotor along the solid of rotation of Zhou Junbu free bearing, and its each free bearing is hinged with the oscillating vane butt respectively, simultaneously by the follow-up ring collar, constitutes rotor thus; This rotor is fitted with the stator that follow-up ring sliding bearing, rotor-end axle sliding bearing and rotor both sides end face packing component constitute by the inner chamber by periphery body member and is sealed: in this kind structure, axle center with follow-up ring bearing is quantitative hydraulic pump and motor with respect to fixedly off-centre is provided with structure in rotor revolution axle center, and what the axle center with follow-up ring bearing turned round that the axle center can adjust the offset structure continuously with respect to rotor is volume adjustable hydraulic pump and motor;

It is characterized in that, in rotor, the outer circumferential face of solid of rotation, the free bearing that is used for hinged oscillating vane is arranged at middle part vertically, the position, both sides that connects the free bearing layout area is provided with the identical support end axle of structure, this end axle stationary fit suit high hardness, fine finishing, anti-wear sleeve (available rolling bearing steel is done); In stator, constitute the main body of stator by periphery body, preceding end plate, back end plate and follow-up ring bearing components; Wherein, the outer circumferential face of periphery body, the linkage structure of front end setting and equipped machinery assembling, the relevant position at middle part or rear portion is provided with that working solution advances, the drain line interface; Its bore, intermediate portion vertically is provided with the equipped structure of equipped follow-up ring bearing components, the position, both sides that connects this position is the cooperating structure with forward and backward end plate external diameter, outside two end part the equipped groove of snap ring that cross section is a wedge shape is set, perhaps an end is provided with the equipped groove of snap ring, and the other end is provided with the retaining edge; Before, the basic structure of back end plate is identical, generally select high-quality wear-resistant cast iron material integral manufacturing for use, its external diameter is the transition fit axial plane that cooperates vestibule with the periphery body, it is moving that endoporus setting cooperates with rotor solid of rotation two end axles axle sleeve, static pressure associating sliding bearing structure, mobile equilibrium profile shaft terminal tool sealing component in the dress in equipped, promptly, in bearing working face, with follow-up ring bearing eccentric direction line is that the axis of symmetry is symmetrical arranged two static pressure vallecular cavities, two vallecular cavities lead to the working solution flow groove of its side panel in the face of side respectively by guide groove, connect the annular groove of the arranged outside of this bearing working face to mechanical seal member back side overcurrent; The mechanical seal member is the stationary ring made with graphite impregnation epoxy resin machinery sealing material and constitutes with (having spring and sealing function concurrently) sealing elastic sleeve that nitrile butadiene rubber is made, is fitted to the bore ends (cooperating realization mechanical seal with the stationary ring side end face by rotor-end axle axle sleeve side end face) in this bearing working face outside; This end plate outboard end is provided with the outside thread that cooperates with the snap ring locking swivel nut; At the side panel face that cooperates with the rotor-side end face, with follow-up ring bearing eccentric direction line place diameter is that axis of symmetry setting is advanced, discharge opeing flow groove, simultaneously, with this axis of symmetry serves as that the footpath is provided with the twice angle amplitude fan-shaped water jacket suitable with rotor swing vane group spacing to the midline, connecing outer bottom land is provided with the angle amplitude between two parties and is equivalent to this groove 1/2, circumferentially cross section is trapezoidal fan-shaped inside groove, the circumferential supported spring of clamping in the middle of inside groove is equipped a pair of, by teflon filling graphite or graphite impregnation epoxy resin machinery sealing material make every the packing piece, water jacket equipped by silicon carbide or graphite impregnation epoxy resin machinery sealing material make circumferentially every the envelope piece (after the complete machine assembling,, under the support of circumferential supported spring, promote circumferentially to fit tightly in the rotor-side end face every the packing piece) every the envelope piece; The integral installation distribution structure is, the follow-up ring external diameter suit main body of rotor by wear-resistant cast iron material make, bearing working face is provided with static pressure vallecular cavity and guide groove, be coated with in case of necessity, the follow-up ring bearing components of plating or compound anti-attrition, wearing layer, two ends end axle sleeve is adorned forward and backward end plate, be fitted to the inner chamber of periphery body in the lump, insert segmented in the equipped groove of periphery intracoelomic cavity two end part snap ring and install snap ring, by snap ring locking swivel nut male cone (strobilus masculinus) at (back) end plate outside thread place before being threaded onto and cooperating of the segmented snap ring internal diameter conical surface, with periphery body and the fixing formation of its inner chamber member chucking complete machine; Under the working state, two static pressure sap cavities of rotor follow-up ring bearing are linked up through guide groove and rotor homonymy active chamber respectively, and the dynamic and static hydraulic coupling of formation makes the inside and outside footpath of follow-up ring force in radial tend to be balanced; Two static pressure sap cavities of rotor-end axle bearing are linked up through guide groove and rotor offside active chamber respectively, and the dynamic and static hydraulic coupling of formation makes whole rotor force in radial tend to be balanced; The vallecular cavity behind packing piece compression supported spring and in being somebody's turn to do of the fan-shaped inside groove of (back) end plate was linked up before the pressure working solution promoted via the flow groove, the static pressure that forms circumferentially keeps closely pasting mutually every envelope piece and rotor-side end face through promoting every the packing piece, and realization rotor-side end face advances, the effective packing between discharge opeing two operation intervals.

2, a kind of oil hydraulic pump as claimed in claim 1 and motor, it is characterized in that, the anterior mounting flange that is connected with transmission device that is provided with of the outer circumferential face of its periphery body, the rear portion is provided with that working solution advances, the drain line interface, bore is band retaining edge, rear portion, and the front portion is provided with the isometrical cylindrical cavity that cross section is the equipped groove of snap ring of wedge shape; The outer end of preceding end plate is provided with the outside thread equipped with the snap ring locking swivel nut, and the card that cooperates with the rotor side is provided with shoulder, and the shoulder axial plane cooperates with follow-up ring brearing bore coaxial transition; The card that cooperates with the rotor side of back end plate is symmetrical in that follow-up ring bearing eccentric direction line place diameter symmetry is provided with into, discharge opeing two flow grooves, and the chute of crossing that two flow grooves are provided with in groove is linked up with the flowing hole that radially is provided with respectively; Assembly features is, rotor periphery suit follow-up ring bearing, and two ends end axle is equipped with forward and backward end plate member, the coaxial bore that is fitted to the periphery body; The snap ring locking swivel nut of end plate outside promotes to place snap ring in the equipped groove of snap ring that periphery body body inner member is compressed to install before being threaded onto; Wherein, circumferentially limit through equipped flat key therebetween between preceding end plate and follow-up ring bearing and the periphery body, back end plate circumferentially limits by positioning dowel equipped between its card and the follow-up ring bearing side; (for example retain an amount of matching gap between preceding end plate and rotor side fitting surface, 0.2 millimeter), in its fan-shaped water jacket circumferentially every the spring-supported applying that under the promotion of packing piece and working fluid pressure, remains with the rotor-side end face of envelope piece being subjected in inside groove.

3, a kind of oil hydraulic pump as claimed in claim 1 and motor is characterized in that, are provided with in the periphery of its periphery body middle part that working solution advances, the drain line interface, adjust screw rod and nut mount inlet, supported spring and plug screw mount inlet; The axle center of its bore intermediate portion is along follow-up ring desaxe direction, turn round the distance that axis deviation is equivalent to follow-up ring bearing maximum eccentricity amount 1/2 with respect to rotor, the chamber wall is provided with and contains the equipped groove every strip of paper used for sealing (41) that is loaded on the follow-up ring periphery, the chamfered groove that cooperates with the supporting plane (x) of follow-up ring periphery; The both sides at this position are axle center and rotor revolution axle center vestibule coaxial, that cooperate with two end plate external diameters; Outside two end part be provided with the equipped groove of segmented snap ring; By be assemblied in follow-up ring bearing in the periphery body body and periphery thereof every strip of paper used for sealing, adjust screw rod and nut, supported spring and plug screw and match and constitute working solution discharge capacity regulating mechanism; Package assembly is, rotor periphery suit follow-up ring bearing components, be loaded on the inner chamber of periphery body in the lump, identical two end plates of structure are set in two ends of rotor end axle, are fitted to the inner chamber of periphery body by both sides, snap ring is equipped with in the groove and inserts the segmented snap ring, is compressed through the segmented snap ring by the snap ring locking swivel nut to install; Wherein, follow-up ring bearing periphery two every strip of paper used for sealing equipped groove is divided into two semi-ring chambeies with the ring cavity between periphery intracoelomic cavity and follow-up ring bearing outer circumferential face by it, inhale with working solution respectively in two semi-ring chambeies, row's interface is linked up and inhale, arrange active chamber respectively with rotor by the flow groove of end plate card is communicated with; Adjustment screw rod and nut, supported spring and plug screw by the periphery body of being packed into by opposite direction limit the follow-up ring BEARING SHAFT by desired location, adjust screw rod by turn and adjust the offset amplitude of follow-up ring BEARING SHAFT continuously with respect to rotor revolution axle center, with finish its working solution discharge capacity 0 to adjusting continuously between the maximum value.