A kind of flat spring cylindrical spoke spring combined compensation double cavity vane pump
Technical field
The invention belongs to mechanical engineering field, International Classification of Patents is F04D non-varactor pump, relates to a kind of by mechanical energyThe power conversion rotary volume pump that is converted to fluid pressure energy, refers to a kind of flat spring cylindrical spoke spring combined compensation especiallyDouble cavity vane pump.
Background technology
Rotary volume pump has advantages of that efficiency is high, but after all there is long-term service wear, its efficiency obviously reduces, and makesBecome the main cause of above-mentioned defect to be that the end face activity isolation between high pressure chest and low-pressure cavity could not play effective sealing. End faceThe undersized easy heat expansion of fit tolerance is stuck firmly, the oversize effective sealing that could not play of end face fit tolerance, and long-termAfter service wear, sealing effectiveness is poorer, and the production line of having to stop is changed pumping unit, causes very large direct waste and indirectly damagesLose.
In all rotary volume pumps, vane pump is widely used in each work because of plurality of advantages such as its compact conformationsCommercial field. Perplexing its problem that always can not get effectively solving is: after long-term high-speed cruising, its end face must wear and tear noTo effective compensation. China's license notification number: CN1059019C pendulum rotary vane pump; China's license notification number:CN100374725C rotating vane pump; China's license notification number: the arc toothed mesohigh tooth of CN1316162C asymmetric doubleWheel pump; The sliding blade pump of China's license notification number: CN1081750C with plastic housing; China's license notification number:CN101120175B and China's license notification number: CN101403382B jet engine of microminiature turbine gearPump etc., has been showed no practicable effective compensation method and measure, solves rotary volume pump end wear simultaneously and mendsRepay sealing and gauge wear compensation sealing problem.
Summary of the invention
The object of this invention is to provide a kind of flat spring cylindrical spoke spring combined compensation double cavity vane pump, possess end simultaneouslyThe technology of surface wear compensation sealing and gauge wear compensation sealing, close in compensating all the time to realize between high pressure chest and low-pressure cavityEnvelope state, makes up the deficiencies in the prior art, fills up rotary volume pump and possesses end wear compensation sealing sealing and radially simultaneouslyThe technological gap of wear-compensating sealing.
To achieve these goals, the invention provides following technical scheme: a kind of flat spring cylindrical spoke spring combination is mendedRepay double cavity vane pump, comprise main shaft drum, flat spring, cylindrical spoke spring, end-face compensate dish, sliding blade, front end enclosing cover, end capScrew, the pump housing, rear end enclosing cover, the both ends of the surface of the described pump housing are mutually vertical with pump housing elliptical inner, and described end cap screw willDescribed rear end enclosing cover is fixed on the described pump housing one side end face, and described end cap screw is fixed on described front end enclosing coverOn described pump housing opposite side end face; The band seal groove bonnet with seal groove front cover hole and rear end enclosing cover of described front end enclosing coverHole and pump housing elliptical inner are on same central axis: described main shaft bulge draw together main shaft have key section, main shaft rotary drum section andMain shaft is without key section, and main shaft has key section and band seal groove front cover hole to be slidably matched, and main shaft slides without key section and band seal groove bonnet holeCoordinate, in main shaft rotary drum section, have two blade flutings at least, in every blade fluting, a slice sliding blade is housed, the sheet of flat springSpring perforate is fixed on the slide plate boss of sliding blade, and sheet spring limit pin is supported on the baseplane of blade fluting, and slide plate outer rim is pastedPump housing elliptical inner; Described main shaft rotary drum section is located on the pump between front end enclosing cover and rear end enclosing cover together with sliding blade oneIn body elliptical inner, as improvement: between described main shaft rotary drum section and front end enclosing cover, there is end-face compensate dish, and described end faceThe outer elliptic contour of compensating disc has slipper seal with pump housing elliptical inner and coordinates, and compensating disc centre bore and main shaft have key section to slideCoordinate, compensating disc back of the body scrobicular ring angle place is fixed with the outer toroid of cylindrical spoke spring, and press the radiation item termination of cylindrical spoke springAt the inboard face of front end enclosing cover.
External force is inputted by main shaft keyway, drives the rotation of whole main shaft drum, relatedly orders about each slip and is inserted in blade and opensSliding blade synchronous rotary in groove 15, relies on centrifugal force and the radially acting in conjunction of bounce of flat spring, makes sliding bladeSlide plate outer rim be close to all the time on pump housing elliptical inner, form radial compensation sealing state;
Sliding blade one sideslip sheet end face is pasting the inboard face of rear end enclosing cover, and opposite side slide plate end face is pasting end-face compensate dishHorizontal frontal plane, the cylindrical spoke spring of using compensating disc back of the body scrobicular ring angle place is pressed against the axially bounce-back of inboard face generation of front end enclosing coverPower, forms nose balance sealing;
Outside described rear end, be stamped the port that two suction tanks are being communicated with respectively suction passage, two suction passages anotherOne port is connected with suction inlet after merging again; There are two drain tanks being communicated with respectively a port of discharging runner, two dischargesThe another port of runner is connected with outlet after merging again.
Structural principle:
External force is inputted by main shaft keyway, drives the rotation of whole main shaft drum, relatedly orders about each slip and is inserted in blade and opensSliding blade synchronous rotary in groove, rely on centrifugal force and the radially acting in conjunction of bounce of flat spring, makes sliding bladeSlide plate outer rim is close on pump housing elliptical inner all the time, forms radial compensation sealing.
Sliding blade one sideslip sheet end face is pasting the inboard face of rear end enclosing cover, and opposite side slide plate end face is pasting end-face compensate dishHorizontal frontal plane, the cylindrical spoke spring of using compensating disc back of the body scrobicular ring angle place is pressed against the axial bounce-back of the inboard face generation of front end enclosing coverPower, guarantees that the both sides slide plate end face of each sliding blade is all in compensation sealing state, forms nose balance sealing.
The dynamic confined space forming with main shaft rotary drum section cylindrical and pump housing elliptical inner between each sliding bladeAll the time in combination wear-compensating sealing state.
The minor axis diameter of pump housing elliptical inner equals the outside diameter of main shaft rotary drum section, but slidably; The pump housing is with circle endoporusMajor diameter is greater than the outside diameter of main shaft rotary drum section and has certain space length. The space of both sides is isolated shape by sliding bladeBecome two-chamber to work simultaneously, on each working chamber, can lead to respectively suction tank and drain tank. Suction tank on same working chamber withBetween drain tank, there is sliding blade isolation.
Each dynamic confined space progressively diminishes while being rotated in each drain tank one side, from the pump housing to outside exudate bodyMedium: while being rotated in each suction tank one side, progressively become large, from outside inhalant liquid body medium to the pump housing. Go round and begin again, realizeContinuously by two suction tanks through suction passage merge after from suction inlet inhalant liquid body medium, after supercharging by drain tank through rowGo out runner merge after from outlet exudate body medium.
The invention has the beneficial effects as follows: rely on the radially bounce of flat spring and the axial bounce connection of cylindrical spoke springCooperation use, has realized the technology that simultaneously possesses end wear compensation sealing and gauge wear compensation sealing, guarantees each slip leafBetween sheet, forming each moving state confined space with main shaft rotary drum section cylindrical and pump housing elliptical inner mends in combination all the timeRepay sealing state.
Brief description of the drawings
Fig. 1 is that entirety of the present invention is by the profile of main shaft.
Fig. 2 is the profile in P-P cross section in Fig. 1.
Fig. 3 be main shaft rotary drum section 18 in Fig. 2 together with sliding blade 50 profile to turn clockwise after 15 degree.
Fig. 4 be main shaft rotary drum section 18 in Fig. 2 together with sliding blade 50 profile to turn clockwise after 30 degree.
Fig. 5 is the stereogram of sliding blade 50 and flat spring 20 position relationships.
Fig. 6 is the stereogram of main shaft drum 10.
Fig. 7 is the stereogram of end-face compensate dish 40.
Fig. 8 is the top view of cylindrical spoke spring 30.
Detailed description of the invention
In conjunction with the accompanying drawings and embodiments, further structure of the present invention and operation principle are elaborated.
A kind of flat spring cylindrical spoke spring combined compensation double cavity vane pump, comprises main shaft drum 10, flat spring 20, cylindrical spokeBar spring 30, end-face compensate dish 40, sliding blade 50, front end enclosing cover 60, end cap screw 70, the pump housing 80, rear end enclosing cover 90, described inBoth ends of the surface and the pump housing elliptical inner 85 of the pump housing 80 mutually vertical, described end cap screw 70 is consolidated described rear end enclosing cover 90Fix on the described pump housing 80 1 side end faces, described front end enclosing cover 60 is fixed on the described pump housing by described end cap screw 70On 80 opposite side end faces; The band seal groove bonnet hole with rear end enclosing cover 90 with seal groove front cover hole 61 of described front end enclosing cover 6091 and pump housing elliptical inner 85 on same central axis; Described main shaft drum 10 comprises that main shaft has key section 11, main shaft to turnDrum section 18 and main shaft are without key section 13, and main shaft has key section 11 and band seal groove front cover hole 61 to be slidably matched, and main shaft is without key section 13 and bandSeal groove bonnet hole 91 is slidably matched, and has two blade grooves 15 in main shaft rotary drum section 18 at least, and every blade is slotted 15 li and is equipped withA slice sliding blade 50, the sheet spring perforate 25 of flat spring 20 is fixed on the slide plate boss 55 of sliding blade 50, sheet spring limit pin 21Be supported on the baseplane of blade fluting 15, slide plate outer rim 58 is being pasted pump housing elliptical inner 85; Described main shaft rotary drum section 18 connectsBe located in the pump housing elliptical inner 85 between front end enclosing cover 60 and rear end enclosing cover 90 with sliding blade 50 1, as improvement: instituteBetween the main shaft rotary drum section 18 of stating and front end enclosing cover 60, there is end-face compensate dish 40, and the outer elliptic wheel of described end-face compensate dish 40Wide 48 have slipper seal with pump housing elliptical inner 85 coordinates, and compensating disc centre bore 41 has 11 slips of key section to join platform with main shaft, mendsRepay the dish back of the body 44 places, scrobicular ring angle and be fixed with the outer toroid 36 of cylindrical spoke spring 30, press the radiation item termination 34 of cylindrical spoke spring 30Lean against the inboard face of front end enclosing cover 60.
As further improvement: described rear end enclosing cover 90 has two suction tanks 56 being communicated with respectively one of suction passage 96Port, the another port of two suction passages 96 is connected with suction inlet 86 after merging again; There are two drain tanks 54 to be communicated with respectivelyA port of discharging runner 94, after the another port of two discharge runners 94 merges, be connected with outlet 84 again.
Embodiment installation steps and the course of work are as follows.
Installation steps:
In Fig. 1, Fig. 2, embodiment selects every sliding blade 50 to have a slide plate boss 55; Each side of the pump housing 80End cap screw 87 numbers are 4; There is compensating disc back of the body scrobicular ring angle 44 at end-face compensate dish 40 back sides; In main shaft rotary drum section 18, there are 6 blades to openGroove 15.
Between rear end enclosing cover 90 and the end face of the pump housing 80 1 sides, pad is put gasket seal 98, after inciting somebody to action with 4 end cap screws 70End enclosing cover 90 is fixed on the pump housing 80 1 side end faces. Pack successively a slice sliding blade 50, flat spring into 15 li of 6 blade flutings20 sheet spring perforate 25 is fixed on the slide plate boss 55 of sliding blade 50, and it is flat that sheet spring limit pin 21 is supported on the end of blade fluting 15On face. Main shaft drum 10 and sliding blade 50 are together placed in pump housing elliptical inner 85, wherein main shaft penetrates without key section 13 againBand is slidably matched in seal groove bonnet hole 91.
Slide plate end face 51 by end-face compensate dish 40 horizontal frontal planes towards sliding blade 50, allows compensating disc centre bore 41 slip capsEnter main shaft and have key section 11. The outer elliptic contour 48 of end-face compensate dish 40 has slipper seal with pump housing elliptical inner 85 and coordinates, because ofAnd end-face compensate dish 40 has key section 11 can only make axial slip with respect to main shaft. At the compensating disc back of the body, 44 places, scrobicular ring angle fix cylindricalThe outer toroid 36 of spoke spring 30, on the opposite side end face of the pump housing 80, pad is put gasket seal 68, covers the rear use 4 of front end enclosing cover 60End cap screw 70 is fixed on front end enclosing cover 60 on the pump housing 80 opposite side end faces, makes the cylindrical at the compensating disc back of the body 44 places, scrobicular ring angleSpoke spring 30 is pressed against the inboard face of front end enclosing cover 60.
There is front sealing ring 16 at band seal groove front cover hole 61 places, and there is rear sealing ring 19 at band 91 places, seal groove bonnet hole.
When work operation:
External force is inputted by main shaft keyway 12, drives whole main shaft drum 10 to rotate, and relatedly orders about each slip and is inserted in leafSliding blade 50 synchronous rotaries in sheet fluting 15, rely on centrifugal force and the radially acting in conjunction of bounce of flat spring 20, makeThe slide plate outer rim 58 of sliding blade 50 is close on pump housing elliptical inner 85 all the time, forms radial compensation sealing state.
Sliding blade 50 1 sideslip sheet end faces 51 are pasting the inboard face of rear end enclosing cover, and opposite side slide plate end face 51 is pasting end faceCompensating disc 40 horizontal frontal planes, the cylindrical spoke spring 30 of using the compensating disc back of the body 44 places, scrobicular ring angle is pressed against the inboard face of front end enclosing cover 60Produce axial bounce, form nose balance sealing. Guarantee that the both sides slide plate end face 51 of each sliding blade 50 is all in compensationSealing state.
The minor axis diameter of pump housing elliptical inner 85 equals the outside diameter of main shaft rotary drum section 18, but slidably; Pump housing ellipseEndoporus 85 major diameter are greater than the outside diameter of main shaft rotary drum section 18 and have certain space length. Two spaces of surveying are by the leaf that slidesSheet 50 isolation form two-chamber and work simultaneously, can lead to respectively suction tank 56 and drain tank 54 on each working chamber.
Six of forming of six sliding blades 50 and main shaft rotary drum section 18 cylindricals and pump housing elliptical inner 85 are dynamic airtightSpace is all the time in wear-compensating sealing state. Between suction tank 56 on same working chamber and drain tank 54, there is slip leafSheet 50 is kept apart them in turn.
Each dynamic confined space progressively diminishes while being rotated in each drain tank 54 1 side, and in the pump housing, liquid medium is by dischargingGroove 54 is through discharging runner 94 from outlet 84 to outside exudate body medium;
Each dynamic confined space progressively becomes while being rotated in each suction tank 56 1 side greatly, by suction tank 56 through suction passage96 suck outside liquid medium in the pump housing from suction inlet 86. Go round and begin again, realize continuously by two suction tanks 56After suction passage 96 merges, suck outside liquid medium in the pump housing from suction inlet 86, the liquid medium after supercharging is by dischargingGroove 54 after discharging runner 94 and merging from outlet 84 to outside exudate body medium.