CN102678553A - Vacuum pump with special-shaped cavity - Google Patents
Vacuum pump with special-shaped cavity Download PDFInfo
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- CN102678553A CN102678553A CN2012101747516A CN201210174751A CN102678553A CN 102678553 A CN102678553 A CN 102678553A CN 2012101747516 A CN2012101747516 A CN 2012101747516A CN 201210174751 A CN201210174751 A CN 201210174751A CN 102678553 A CN102678553 A CN 102678553A
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Abstract
The invention discloses a vacuum pump with a special-shaped cavity; the vacuum pump comprises a stator and a rotor; wherein the stator is a cylinder body provided with a special-shaped cylindrical-surface inner cavity, an inlet and an outlet; the special-shaped cylindrical-surface inner cavity is formed by two arc surfaces and two non-arc surfaces; the rotor is formed by a rotor body and two pairs of combination slide plates; the rotor body is a circular cylinder body provided with a transmission shaft, a centering shaft and a crossed guide groove; the two pairs of combination slide plates are vertically arranged in the guide groove; a cover plate is a flat plate provided with a bearing hole; the two end faces of the stator are matched with the cover plate to form into a sealing cavity; the rotor is matched with the bearing hole on the cover plate by the transmission shaft and the centering shaft; the external drive couple drives the rotor to rotate by the transmission shaft. When the rotor rotates, the combined arc surface of the special-shaped cylindrical-surface inner cavity matches with the rotor to control the two pairs of combination slide plates to slide alternatively to intake air through the inlet and press air out through the outlet, thereby forming negative pressure in the inlet area.
Description
Technical field
The present invention relates to special-shaped chamber vacuum pump, belong to fluid machinery and vacuum technique field.
Background technique
Vacuum pump is to make the device that produces and keep the rarefied gas state that is lower than environment atmospheric pressure in the enclosed space, has a wide range of applications in fields such as chemical industry, oil, pharmacy, food, metallurgy, machinery, papermaking, electronics, plastics, potteries.Divide by working principle, vacuum pump has gas transfer pump and two kinds of fundamental types of gas capture pump.The actual vacuum pump great majority that use are gas transfer pump, comprise Roots pump, rotary-vane vaccum pump, stator formula vacuum pump, pendular ring (water ring) vacuum pump, dry vacuum pump, reciprocating vacuum pump, slide-valve vacuum pump, molecular pump, water injection vacuum pump, gas jetpump, diffusion pump etc.
Development along with modern industrial technology; The working efficiency of vacuum pump, degree of vacuum, pressure range, vibration and noise, reliability, operating life, energy consumption, medium adaptability, performance requirement such as corrosion-resistant, high temperature resistant and Economy are required increasingly high, yet existing vacuum pump still can not satisfy these demands fully.With regard to gas delivery type vacuum pump; Because this type pump performance depends primarily on its mechanical realization; Therefore need new pump body structure design; Particularly need to greatest extent simplified structure, reduced volume, reduction weight, raise the efficiency, make the basic structural elements functional diversities of pump simultaneously, thereby create conditions for complex art level and the Economy that improves pump.
Summary of the invention
The purpose of this invention is to provide a kind of simple structure, efficient height, good reliability and have the vane rotor type vacuum pump-special-shaped chamber vacuum pump of shutting down the automatic blocking function.
The special-shaped chamber of special-shaped chamber of the present invention vacuum pump vacuum pump comprises by the stator that has irregular cylinder inner chamber, import, outlet, first compensating groove, second compensating groove and relief groove and the upper cover plate and the lower cover plate that are installed on the stator both ends of the surface and constitutes Seal cage, and rotor is installed in Seal cage;
The irregular cylinder inner chamber of stator is connected successively by quadrant cambered surface AB, transition cambered surface BC, quadrant cambered surface CD, turnover plane DE and spacing curved surface EA and constitutes; Quadrant cambered surface AB and quadrant cambered surface CD are coaxial; The centre of curvature that transition cambered surface BC goes up B end and C end is positioned on the common axis O of quadrant cambered surface AB and quadrant cambered surface CD; The utmost point footpath ρ of transition cambered surface BC and radius of curvature R ' hold the C end to reduce continuously by B, utmost point footpath ρ and radius of curvature R ' maximum and equal, i.e. ρ at B end place
Max=R '
Max=a, utmost point footpath ρ and radius of curvature R ' minimum and equal, i.e. ρ at C end place
Min=R '
Min=b;
The maximum curvature radius a equal in length of the radius R of quadrant cambered surface AB and transition cambered surface BC, i.e. R=a; The minimum profile curvature radius b equal in length of the radius r of quadrant cambered surface CD and transition cambered surface BC, i.e. r=b; Transition cambered surface BC and quadrant cambered surface AB are tangent at the B end, form smooth transition; Transition cambered surface BC and quadrant cambered surface CD are tangent at the C end, form smooth transition; Spacing curved surface EA and quadrant cambered surface AB are tangent at the A end, form smooth transition; Turnover plane DE and quadrant cambered surface CD intersect at the D end, intersect at the E end with spacing curved surface EA, form by the ladder transition of quadrant cambered surface CD to spacing curved surface EA; Spacing curved surface EA meets the following conditions:
Cross the common axis O of quadrant cambered surface AB and quadrant cambered surface CD and perpendicular to the length L of limited curved surface EA of the arbitrary line of O and the transversal section ce of transition cambered surface BC institute
Ce, more than or equal to the radius sum of quadrant cambered surface AB and quadrant cambered surface CD, promptly
L
ce≧R+r=a+b；
Import on the stator is opened in the zone of spacing curved surface EA, and outlet is opened in the zone of transition cambered surface BC; First compensating groove and second compensating groove all are opened in the zone of transition cambered surface BC; One end of first compensating groove arises from the C end of transition cambered surface BC, the other end and outlet UNICOM; One end of second compensating groove arises from the B end of transition cambered surface BC, the other end and outlet UNICOM; Relief groove is opened in the zone of spacing curved surface EA, and an end arises from the E end of spacing curved surface EA, the other end and import UNICOM; The upper-end surface and the lower end surface of stator are smooth flat, and the two is parallel to each other, and perpendicular to the bus of each cambered surface of irregular cylinder inner chamber;
Upper cover plate and lower cover plate are flat board, utilize screw to fix with the upper-end surface and the lower end surface of stator respectively, form Seal cage; The center of upper cover plate is processed with the clutch shaft bearing hole, and the center of lower cover plate is processed with second bearing hole, and the clutch shaft bearing hole is a through hole, and second bearing hole is a blind hole;
Rotor is made up of rotor body, first Combined gliding plate and second Combined gliding plate; Rotor body is the cylindrical body that the middle part is processed with the criss-crossing guiding groove, the coaxial transmission shaft that is processed with in cylindrical upper end, the coaxial centration axis that is processed with in cylindrical lower end; The radius R of rotor body
1Equate with the radius r of quadrant cambered surface CD, i.e. R
1=r; The height h of rotor body equates with the height H of stator, i.e. h=H; Criss-crossing guiding groove on the rotor body is made up of first guiding groove and second guiding groove, and the guide surface of these two guiding grooves all is parallel to the axes O of rotor body; First guiding groove and second guiding groove are the center symmetry, and all along the radially incision rotor body certain depth of rotor body, the incision section connects along the axial direction of rotor body the both wings of each guiding groove simultaneously; The middle part of first guiding groove is processed with a rectangle or manhole, and this through hole makes the radially perforation of first guiding groove along rotor body; Second guiding groove respectively is processed with a rectangle or manhole in the upper-end surface of rotor body and place, lower end surface, respectively along the radially perforation of rotor body; The cylindrical body middle part of rotor body is processed with an axes O and a middle pod apertures parallel with second guiding groove perpendicular to rotor body, and the part that second guiding groove is positioned at the axes O both sides is interconnected; The cylindrical body of rotor body respectively is being processed with one perpendicular to the axes O of rotor body and the flank pod apertures parallel with first guiding groove near the transmission shaft root with near the centration axis root, and the part that first guiding groove is positioned at the axes O both sides is interconnected;
First Combined gliding plate is combined by two block-shaped and the identical T-shape ski boards of size and one first elastic element; The top of T-shape ski board is an arc surface, and cambered surface radius is less than or equal to the radius R of rotor body
1Be processed with one first pod apertures at the place of keeping to the side, bottom of T-shape ski board, the location that is processed with first elastic element at bottom end face holds the hole; The bottom of two T-shape ski boards each other over against, first elastic element makes two T-shape ski boards produce mutual thrust between two T-shape ski boards; Second Combined gliding plate is combined by two block-shaped and the identical flute profile slide plates of size and two second elastic elements; The shape at flute profile slide plate top is identical with the shape at T-shape ski board top, respectively is processed with one second pod apertures at the place of keeping to the side, bottom of two groove legs of flute profile slide plate, respectively is processed with the appearance hole, location of second elastic element at the bottom end face of two groove legs; The groove leg of two flute profile slide plates each other over against, two second elastic elements lay respectively between two pairs of groove legs, make two flute profile slide plates produce mutual thrust; The thickness of T-shape ski board equates that with the width of first guiding groove thickness of flute profile slide plate equates with the width of second guiding groove; The height h of T-shape ski board
1Height h with the flute profile slide plate
2Be equal to the height h of rotor body, i.e. h
1=h
2=h; First Combined gliding plate is installed in sliding matching mode in first guiding groove of rotor body, and second Combined gliding plate is installed in second guiding groove of rotor body with sliding matching mode; The length L of T-shape ski board
1, the flute profile slide plate length L
2Satisfy relation: 2L with the radius R of quadrant cambered surface AB and the radius r of quadrant cambered surface CD
1≦ R+r, 2L
2≦ R+r;
Rotor cooperates with the clutch shaft bearing hole of upper cover plate and second bearing hole rotation of lower cover plate respectively through transmission shaft on the rotor body and centration axis; Simultaneously; The quadrant cambered surface AB of being slidingly matched of the lower end surface of being slidingly matched of the upper-end surface of being slidingly matched of the quadrant cambered surface CD of cylndrical surface and the irregular cylinder inner chamber of rotor through rotor body, rotor body and upper cover plate, rotor body and lower cover plate, first Combined gliding plate and second Combined gliding plate and irregular cylinder inner chamber is slidingly matched; And being slidingly matched of first Combined gliding plate and first guiding groove and being slidingly matched of second Combined gliding plate and second guiding groove, constitute and let out the motive sealing system in preventing;
In the time of in the two ends of first Combined gliding plate are in quadrant cambered surface AB zone respectively and in the quadrant cambered surface CD zone; Be in first pod apertures of the T-shape ski board in the quadrant cambered surface CD zone and the middle pod apertures of rotor body and be in coaxial position; The both sides of second guiding groove are communicated with; At this moment; Second Combined gliding plate is in flute profile slide plate in the spacing curved surface EA zone under the thrust and flute profile slide plate self action of centrifugal force of second elastic element, and its top and spacing curved surface EA keep in touch; In the time of in the two ends of second Combined gliding plate are in quadrant cambered surface AB zone respectively and in the quadrant cambered surface CD zone; Be in second pod apertures of the flute profile slide plate in the quadrant cambered surface CD zone and the flank pod apertures of rotor body and be in coaxial position; The both sides of first guiding groove are communicated with; At this moment; First Combined gliding plate is in T-shape ski board in the spacing curved surface EA zone under the thrust and T-shape ski board self action of centrifugal force of first elastic element, and its top and spacing curved surface EA keep in touch.
The working method of special-shaped chamber vacuum pump is that import is connected with the seal container that need vacuumize, and through transmission shaft rotor is rotated by the external rotating couple by A → B → C → D direction.During rotor rotation, gas is sucked from import, extrude by outlet.
In the rotor rotation process; When the first half of first Combined gliding plate by the A end of quadrant cambered surface AB when the B end rotates; Then the second Combined gliding plate first half is rotated to the C end by the B end of transition cambered surface BC; Because the interval internal rotor of AB is the zero clearance in theory with each kinematic pair of cavity and cooperates, so the left side of first Combined gliding plate sucks cavity with gas from import because of continuous change of the volume of cavity forms negative pressure greatly.Meanwhile, the volume of the first Combined gliding plate right side cavity reduces continuously, and gas is extruded from outlet.When first Combined gliding plate forwards a BD position to and second Combined gliding plate when forwarding a some AC position to, the two exchanges the role, and repeats above process.Rotor rotates continuously, and the alternating movement of first Combined gliding plate and second Combined gliding plate is also carried out continuously, the gas pressure in the seal container is constantly descended, until the degree of vacuum that reaches capacity.
In the rotor rotation process; Two Combined gliding plates rotate in company with rotor body; And on rotor body, intersect to slide, when first Combined gliding plate forwarded the BD position to by the AC position, it kept in touch with the 1/4 arc surface AB and the 1/4 arc surface CD of bore of stator respectively at two ends up and down; And length is constant, and keeps static with respect to rotor body.Simultaneously, the right-hand member of second Combined gliding plate is rotated to the C end by the B end along transition cambered surface BC, and its left end is then rotated to the A end by the E end in spacing curved surface EA zone, and the thrust of second elastic element increases the length of second Combined gliding plate, and its left end contacts with spacing curved surface EA.Along with the right-hand member of second Combined gliding plate forwards the C end along transition cambered surface BC to by the B end, the utmost point footpath of transition cambered surface BC reduces continuously, promotes the slippage left in second guiding groove of second Combined gliding plate.When first Combined gliding plate forwards the BD position to and second Combined gliding plate when forwarding the AC position to, two Combined gliding plate switching motions repeat the rotary course of 90 ° of fronts.Afterwards, first Combined gliding plate and second Combined gliding plate periodically repeat above action.
In the rotor rotation process, whenever a slice slide plate is held along spacing curved surface EA from E when import is slided, the volume of this slide plate rear portion cavity increases continuously, produces negative pressure, makes rotor receive a resisting moment effect.Relief groove on the stator is communicated with the cavity of import with this slide plate rear portion, rises and eliminates action of negative pressure.
In the rotor rotation process, when a slice slide plate was held to the outlet slip along transition cambered surface BC from B, the volume of this slide plate rear portion cavity reduced continuously, and gas pressure increases in the cavity, makes rotor receive a resisting moment effect; At this moment, second compensating groove that is positioned at the outlet top on the stator will export with the cavity at this slide plate rear portion and be communicated with, and play release pressure.Similarly, whenever a slice slide plate along transition cambered surface BC from outlet when C end slides, the volume of the anterior cavity of this slide plate reduces continuously, gas pressure increases in the cavity, makes rotor receive a resisting moment effect; At this moment, first compensating groove that is positioned at the outlet below on the stator will export with the anterior cavity of this slide plate and be communicated with, and play release pressure.
In the rotor rotation process; When first Combined gliding plate forwards the BD position to by the AC position and second Combined gliding plate when forwarding the AC position to by the BD position; First Combined gliding plate keeps static with respect to rotor body, and second Combined gliding plate then slides in second guiding groove of rotor body to the left.In this stage, first pod apertures and the middle pod apertures on the rotor body that are positioned on the T-shape ski board of the first Combined gliding plate bottom are in coaxial position, and two chambers about between two flute profile slide plates of second Combined gliding plate are communicated with.When second Combined gliding plate slides left; The volume of its left chamber increases the formation negative pressure continuously, and the volume of its right chamber reduces to form malleation continuously, so the gas in the right chamber flows into left chamber through the middle pod apertures and first pod apertures; Therefore vapour lock can not take place, influence rotor rotation.Simultaneously, the middle pod apertures and first pod apertures produce certain damping to the slip of second Combined gliding plate, and second Combined gliding plate is weakened the impact force of stator.When second Combined gliding plate forwards the BD position to by the AC position and first Combined gliding plate when forwarding the AC position to by the BD position, second Combined gliding plate keeps static with respect to rotor body, and first Combined gliding plate then slides in first guiding groove of rotor body to the left.In this stage, second pod apertures and the flank pod apertures on the rotor body that are positioned on the flute profile slide plate of the second Combined gliding plate bottom are in coaxial position, and two chambers about between two T-shape ski boards of first Combined gliding plate are communicated with.When first Combined gliding plate slides left; The volume of its left chamber increases the formation negative pressure continuously, and the volume of right chamber reduces to form malleation continuously, so the gas in the right chamber flows into left chamber through the flank pod apertures and second pod apertures; Therefore vapour lock can not take place, influence rotor rotation.Simultaneously, the flank pod apertures and second pod apertures produce certain damping to the slip of first Combined gliding plate, and first Combined gliding plate is weakened the impact force of stator.
The gas pressure that special-shaped chamber vacuum pump is in non-operating condition and outlet side is during greater than the gas pressure of suction side, and turnover plane DE plays the jam effect to T-shape ski board or the flute profile slide plate that is positioned at spacing curved surface EA zone, and rotor can not be reversed.
The main feature of special-shaped chamber of the present invention vacuum pump is:
(1) simple structure, compactness, number of spare parts is few.
(2) stator and rotor are the active sealing configuration, so volumetric efficiency is high; The cavity actual volume is big, and in the rotor rotation process, air-breathing and exhaust is carried out and free of discontinuities simultaneously, so vacuum pumping rate is fast.
(3) at gas through in the process of cavity, when in the chamber that it is in import is communicated with, pressure descends continuously; In the time of in it is in the chamber that is communicated with outlet, pressure rises continuously.But, do not exist the chamber between adjacent T-shape ski board and the flute profile slide plate to isolate and compressed state with import and outlet simultaneously, promptly inside cavity does not have compression.Therefore, gas temperature changes very little, near isothermal process.
(4) owing to air-breathing and exhaust process all are continuously, so pump drainage is more even, and pulsation is slight, and noise is low, stable working.
(5) therefore Combined gliding plate variable-length under the effect of elastic element tension force has the wear automatic-compensation ability, and the volumetric efficiency of pump is stable.
(6) since rotor have and can not reverse characteristic; Rotor has static selfsealings ability with making cavity cooperating of stator and cover plate simultaneously; Therefore stator-the rotor mechanism of pump has the function of automatic check valve, makes pump automatic blocking when shutting down, and avoids taking place the suck-back phenomenon and takes place.
(7) variable-length of Combined gliding plate, therefore insensitive to the impurity such as particle dust in the gas.
(8) owing to have dynamic and static selfsealings characteristic; Therefore both can adopt common oil sealing mode to improve the lubricated and clearance seal of each kinematic pair in stator-rotor mechanism; Also can make dry pump through selecting to have self-lubricating property and intensity and the corrosion-resistant also satisfactory materials processing Pump Body Parts of other performance that waits.
(9) installation position does not influence the service behaviour of pump.
(10) can not use retarder, directly connect, therefore can make vacuum system obtain bigger rate of air sucked in required with less space hold and power loss with motor.
(11) can the double as water pump use, be suitable for therefore that some need be taken out in advance, the application of draining or steam, and can make whole vacuum system obtain simplifying.
Description of drawings
Fig. 1 is special-shaped chamber vacuum pump structure and working principle schematic representation, and wherein figure (a) is in the schematic representation of any pivotal position for rotor, and figure (b) is the schematic representation that the slide plate end just is in four curved surface cohesive positions of irregular cylinder inner chamber respectively;
Fig. 2 is the longitudinal sectional drawing of special-shaped chamber vacuum pump;
Fig. 3 is the structural representation of stator, and wherein figure (a) is the plan view of stator, and figure (b) is the right elevation of stator, and figure (c) is the left view of stator;
Fig. 4 is the structural representation of rotor body, and wherein figure (a) is the plan view of rotor body, and figure (b) is the left view of rotor body, and figure (c) is the plan view of rotor body;
Fig. 5 is the schematic representation of first Combined gliding plate that is made up of two T-shape ski boards and elastic element;
Fig. 6 is the schematic representation of second Combined gliding plate that is made up of two flute profile slide plates and elastic element.
Fig. 7 is the schematic representation of minimum spacing curved surface.
Among the figure: 1. stator, 2. import, 3. outlet, 4. first compensating groove, 5. rotor body, 6. first Combined gliding plate; 7. second Combined gliding plate, 8. first elastic element, 9. transmission shaft, 10. centration axis, 11. second elastic elements, 12. upper cover plates; 13. the clutch shaft bearing hole, 14. second bearing holes, 15. first pod apertures, 16. second pod apertures, 17. middle pod apertures, 18. flank pod apertures; 19. first guiding groove, 20. second guiding grooves, the location of 21. first elastic elements holds hole, 22. lower cover plates, 23. upper-end surfaces, 24. lower end surfaces; 25.T the top of shape slide plate, 26. second compensating grooves, the upper-end surface of 27. stators, the lower end surface of 28. stators, the top of 29. flute profile slide plates; 30. the cylndrical surface of rotor body, 31. relief grooves, 32.T shape slide plate, 33. flute profile slide plates, the location of 34. second elastic elements holds the hole.
Embodiment
Referring to figs. 1 through Fig. 7.Special-shaped chamber of the present invention vacuum pump comprises by the stator 1 that has irregular cylinder inner chamber, import 2, outlet 3, first compensating groove 4, second compensating groove 26 and relief groove 31 and constitutes Seal cage with the upper cover plate 12 and the lower cover plate 22 that are installed on stator 1 both ends of the surface, and rotor is installed in Seal cage.
The irregular cylinder inner chamber of stator 1 is connected successively by quadrant cambered surface AB, transition cambered surface BC, quadrant cambered surface CD, turnover plane DE and spacing curved surface EA and constitutes; Quadrant cambered surface AB and quadrant cambered surface CD are coaxial, and common axis is O (seeing Fig. 2, Fig. 3); The centre of curvature that transition cambered surface BC goes up B end and C end is positioned on the common axis O of quadrant cambered surface AB and quadrant cambered surface CD; The utmost point footpath ρ of transition cambered surface BC and radius of curvature R ' hold the C end to reduce continuously by B, utmost point footpath ρ and radius of curvature R ' maximum and equal, i.e. ρ at B end place
Max=R '
Max=a, utmost point footpath ρ and radius of curvature R ' minimum and equal, i.e. ρ at C end place
Min=R '
Min=b.
The maximum curvature radius a equal in length of the radius R of quadrant cambered surface AB and transition cambered surface BC, i.e. R=a.The minimum profile curvature radius b equal in length of the radius r of quadrant cambered surface CD and transition cambered surface BC, i.e. r=b.Transition cambered surface BC and quadrant cambered surface AB are tangent at the B end, form smooth transition.Transition cambered surface BC and quadrant cambered surface CD are tangent at the C end, form smooth transition.Spacing curved surface EA and quadrant cambered surface AB are tangent at the A end, form smooth transition.Turnover plane DE and quadrant cambered surface CD intersect at the D end, intersect at the E end with spacing curved surface EA, form by the ladder transition of quadrant cambered surface CD to spacing curved surface EA.The function of turnover plane DE is to prevent the rotor reversing, and its length is unsuitable excessive, as long as can play the effect of jam slide plate reliably.If need not prevent the rotor reversing, can cancel turnover plane DE, a D is overlapped with some E, be equivalent to the length of turnover plane DE is taken as zero.No matter whether turnover plane DE is set, spacing curved surface EA should design by following condition:
Cross common axis O and perpendicular to the length L of limited curved surface EA of the arbitrary line of O and the transversal section ce of transition cambered surface BC institute
Ce, more than or equal to the radius sum of quadrant cambered surface AB and quadrant cambered surface CD, i.e. L
Ce≧ R+r=a+b.
The profilogram of transition cambered surface BC is called transition curve, and the linear vibration characteristics and the energy loss characteristic to pump of this curve has very big influence, needs to combine the leaf summit curve structure of slide plate, is optimized design.When the leaf summit curve of first, second two Combined gliding plates was dashed forward circular curve for just prominent triangle is perhaps symmetrical, transition curve satisfied polar equation formula (1):
ρ representes the utmost point footpath of transition curve in the formula; R>=ρ>=r; θ representes the polar angle of transition curve,
The profilogram of spacing curved surface EA is called spacing curve, should design according to transition curve, satisfies equation (2) with the corresponding spacing curve of transition curve that equation (1) provides:
R>r′≥r
In formula (2), if get r '=r, the shape and size of then spacing curve and transition curve are identical.At this moment, the E of spacing curved surface EA end overlaps with the D end of quadrant cambered surface CD, and turnover plane DE disappears, and the profilogram of irregular cylinder inner chamber is shape axisymmetricly, and spacing curved surface EA can represent with DA, referring to Fig. 7.
Special-shaped chamber vacuum pump adopts the cavity body structure of this shape symmetry, can realize two-way working.
Import 2 on the stator 1 is opened in the zone of spacing curved surface EA, and outlet 3 is opened in the zone of transition cambered surface BC, and generally speaking, the two is coaxial.First compensating groove 4 and second compensating groove 26 all are opened in the zone of transition cambered surface BC.One end of first compensating groove 4 arises from the C end of transition cambered surface BC, the other end and outlet 3 UNICOMs.The function of first compensating groove 4 is to eliminate air-resistance phenomenon, and gas can all be discharged from exporting 3 smoothly.One end of second compensating groove 26 arises from the B end of transition cambered surface BC, the other end and outlet 3 UNICOMs.The function of second compensating groove 26 is near when outlet its back side chamber of balance and the pressure of outlet side at slide plate.Relief groove 31 is opened in the zone of spacing curved surface EA, and an end arises from the E end of spacing curved surface EA, the other end and import 2 UNICOMs.The function of relief groove 31 is in the rotor rotation process, makes the negative pressuren zone that forms between front portion and the turnover transitional surface DE of T-shape ski board 6 or flute profile slide plate 7 release pressure in time.Import 2 can be processed linkage structure, for example pipeline thread as required with outlet 3.The upper-end surface and the lower end surface of stator 1 are smooth flat, and the two is parallel to each other and perpendicular to the bus of each cambered surface of irregular cylinder inner chamber.Should there be higher planeness the upper-end surface 27 and the lower end surface 28 of stator 1.Make the material of stator 1, should select according to technical requirementss such as structural strength, tolerance corrosion, for example cast iron, cast steel, stainless steel, plastics etc.
Rotor is made up of rotor body 5, first Combined gliding plate 6 and second Combined gliding plate 7.Rotor body 5 is for being processed with the cylindrical body of criss-crossing guiding groove, the coaxial transmission shaft 9 that is processed with in cylindrical upper end, the coaxial centration axis 10 that is processed with in cylindrical lower end.The radius R of rotor body 5
1Equate with the radius r of quadrant cambered surface CD, i.e. R
1=r.The height h of rotor body 5 equates with the height H of stator 1, i.e. h=H.Criss-crossing guiding groove on the rotor body 5 is made up of first guiding groove 19 and second guiding groove 20, and the guide surface of these two guiding grooves all is parallel to the axes O of rotor body 5.First guiding groove 19 and second guiding groove 20 are the center symmetry, and all along radially incision rotor body 5 certain depths of rotor body 5, the incision section connects along the axial direction of rotor body 5 both wings of each guiding groove simultaneously.The middle part of first guiding groove 19 is processed with a rectangle or manhole, and this through hole makes the radially perforation of first guiding groove 19 along rotor body 5.20 of second guiding grooves respectively are processed with a rectangle or manhole in the upper-end surfaces 23 of rotor body 5 with 24 places, lower end surface, respectively along the radially perforation of rotor body.The cylindrical body of rotor body 5 middle part is processed with one perpendicular to the axes O of rotor body 5 and the middle pod apertures 17 parallel with second guiding groove 20, and middle pod apertures 17 is interconnected the part that second guiding groove 20 is positioned at the axes O both sides.The cylindrical body of rotor body 5 respectively is being processed with one perpendicular to the axes O of rotor body 5 and the flank pod apertures 18 parallel with first guiding groove 19 near transmission shaft 9 roots with near centration axis 10 roots, and flank pod apertures 18 is interconnected the part that first guiding groove 19 is positioned at the axes O both sides.Make the material of rotor 5, should confirm, for example use stainless steel, Cuprum alloy, plastic or other material according to character, duty parameter and the other factors of working medium.
First Combined gliding plate 6 is combined by two block-shaped and the identical T-shape ski boards 32 of size and one first elastic element 8.The top 25 of T-shape ski board 32 is that radius is less than R
1Arc surface (also can be designed to other shape), be processed with one first pod apertures 15 at the place of keeping to the side, bottom.For first elastic element 8 is installed, can processes a spring at T-shape ski board 32 bottom margin places and hold hole 21.The bottom of two T-shape ski boards each other over against, first elastic element 8 makes two T-shape ski boards produce mutual thrust between the bottom of two T-shape ski boards.Second Combined gliding plate 7 is combined by two block-shaped and the identical flute profile slide plates 33 of size and two second elastic elements 11.The shape at the top 29 of flute profile slide plate 33 is identical with the top of T-shape ski board 32, respectively is processed with one second pod apertures 16 at the place of keeping to the side, bottom of two groove legs.For second elastic element 11 is installed, can respectively processes a spring at the bottom margin place of 33 two groove legs of flute profile slide plate and hold hole 34.The groove leg of two flute profile slide plates each other over against, two second elastic elements 11 lay respectively between two pairs of groove legs, make two flute profile slide plates produce mutual thrust.The thickness of T-shape ski board 32 should equate that the thickness of flute profile slide plate 33 should equate with the width of second guiding groove 20 with the width of first guiding groove 19.The height h of T-shape ski board 32
1Height h with flute profile slide plate 33
2All should equal the height h of rotor body 5, i.e. h
1=h
2=h.First Combined gliding plate is installed in sliding matching mode in first guiding groove 19 of rotor body 5, and second Combined gliding plate is installed in second guiding groove 20 of rotor body 5 with sliding matching mode.The length L of T-shape ski board 32
1, flute profile slide plate 33 length L
2And should satisfy following relation between the radius r of the radius R of quadrant cambered surface AB and quadrant cambered surface CD:
2L
1≦R+r，
2L
2≦R+r。
Make the material of T-shape ski board 32 and flute profile slide plate 33, should consider, for example use stainless steel, Cuprum alloy, plastic or other material with rotor body 5 and stator 1 unification.Make the material of first elastic element 8 and second elastic element 11, factors such as main character according to working medium, duty parameter, operating life are confirmed, can use materials such as stainless steel, Cuprum alloy, elastomeric plastics.
Rotor cooperates with the clutch shaft bearing hole 13 of upper cover plate 12 and second bearing hole, 14 rotations of lower cover plate 22 respectively through transmission shaft on the rotor body 59 and centration axis 10, can in Seal cage, rotate.Simultaneously; The quadrant cambered surface AB of being slidingly matched of the lower end surface 24 of being slidingly matched of the upper-end surface 23 of being slidingly matched of the quadrant cambered surface CD of the cylndrical surface 30 of rotor through rotor body 5 and Special-Shaped Surface inner chamber, rotor body 5 and upper cover plate 12, rotor body 5 and lower cover plate 22, first Combined gliding plate 6 and second Combined gliding plate 7 and Special-Shaped Surface inner chamber is slidingly matched; And being slidingly matched of first Combined gliding plate 6 and first guiding groove 19 and being slidingly matched of second Combined gliding plate 7 and second guiding groove 20, constitute and let out the motive sealing system in preventing.
In the time of in the two ends of first Combined gliding plate 6 are in quadrant cambered surface AB zone respectively and in the quadrant cambered surface CD zone; First pod apertures 15 that is in the T-shape ski board 32 in the quadrant cambered surface CD zone should just be in coaxial position with the middle pod apertures 17 of rotor body 5, with the both sides connection of second guiding groove 19; At this moment, second Combined gliding plate 7 is in flute profile slide plate 33 in the spacing curved surface EA zone under the thrust of second elastic element 11 and flute profile slide plate 33 self action of centrifugal force, and keep in touch with spacing curved surface EA on its top 29.In the time of in the two ends of second Combined gliding plate 7 are in quadrant cambered surface AB zone respectively and in the quadrant cambered surface CD zone; Second pod apertures 16 that is in the flute profile slide plate 33 in the quadrant cambered surface CD zone should just be in coaxial position with the flank pod apertures 18 of rotor body 5, with the both sides connection of first guiding groove 19; At this moment, first Combined gliding plate 6 is in T-shape ski board 32 in the spacing curved surface EA zone under the thrust of first elastic element 8 and T-shape ski board 32 self action of centrifugal force, and keep in touch with spacing curved surface EA on its top 25.
Assembly program:
One, 32 pairs of two T-shape ski boards is inserted in first guiding groove 19.Before inserting, first elastic element 8 of between two T-shape ski boards 32, packing into earlier.Two T-shape ski boards 32 and first elastic element 8 fit together, and constitute first Combined gliding plate 6.Then, 33 pairs on two flute profile slide plates are inserted in second guiding groove 20, before inserting, second elastic element 11 of between two flute profile slide plates 33, packing into earlier.The two flute profile slide plates 33 and second elastic element 11 fit together, and constitute second Combined gliding plate 7.The assemblying body of first Combined gliding plate 6 and second Combined gliding plate 7 and rotor body 5 constitutes rotor.
Two, rotor is inserted the inner chamber of stator 1; The cylndrical surface of rotor body 5 is cooperated with the quadrant cambered surface CD of Special-Shaped Surface inner chamber; Transmission shaft 9 on the rotor body 5 is cooperated with the clutch shaft bearing hole 13 of upper cover plate 12 and second bearing hole 14 of lower cover plate 22 respectively with centration axis 10; Be separately fixed at upper cover plate 12 and lower cover plate 22 on the upper-end surface 27 and lower end surface 28 of stator 1 with screw, form seal chamber.
Action request:
When special-shaped chamber vacuum pump is in the running working state, through transmission shaft 9 rotor is rotated by A → B → C → D direction by the external rotating couple.During rotor rotation, the transition cambered surface BC of Special-Shaped Surface inner chamber promotes first Combined gliding plate and second group of Combined gliding plate intersection slided, and gas is sucked from import 2, is extruded by outlet 3.
The gas pressure that special-shaped chamber vacuum pump is in non-running working state and outlet side is during greater than the gas pressure of suction side; Turnover plane DE can not reverse rotor to being in the spacing curved surface EA zone and playing the jam effect with T-shape ski board 32 or flute profile slide plate 33 that spacing curved surface EA keeps in touch.
Lubricate and sealing:
In practical application, should be special-shaped chamber vacuum pump design oil sealing system.For example, adopt rotary-vane vaccum pump lubricating system commonly used to improve the lubricated and clearance seal of each kinematic pair in stator-rotor mechanism, can reach optimum Working with the assurance pump.Also can have self-lubricating property through selection, and intensity and the corrosion-resistant also satisfactory material of other performance that waits, design Pump Body Parts, developing dry pump.
Working principle:
One, vacuumizes
Import 2 is connected with the seal container that need vacuumize; When couple effect drive rotor rotates by A → B → C → D direction outside transmission shaft 9 receives; If the first half of one of two secondary Combined gliding plates (being made as second Combined gliding plate 7) is rotated to the B end by the A end of quadrant cambered surface AB, then the first half of another Combined gliding plate (first Combined gliding plate 6) is rotated to the C end by the B end of transition cambered surface BC.In this process, because being the zero clearance in theory with each relative movement pair of cavity, the interval internal rotor of AB cooperates, so becoming because of the volume of cavity is continuous, the left side of second Combined gliding plate 7 forms negative pressure greatly, gas is sucked cavity from import 2; Meanwhile, the volume of second Combined gliding plate, 7 right side cavitys reduces continuously, and gas is extruded from exporting 3.When second Combined gliding plate 7 forwards the BD position to and first Combined gliding plate 6 when forwarding the AC position to, the two exchanges the role, and repeats above process.Rotor rotates continuously, and the alternating movement of first Combined gliding plate 6 and second Combined gliding plate 7 is also carried out continuously, the gas pressure in the seal container is constantly descended, until the degree of vacuum that reaches capacity.
Two, the motion control of Combined gliding plate
If the initial position of first Combined gliding plate 6 is BD, the initial position of second Combined gliding plate 7 is AC.At this moment, the right-hand member of first Combined gliding plate 6 (upper end) is positioned at the intersection of 1/4 arc surface AB and transition cambered surface BC, and left end (lower end) is positioned at the intersection of 1/4 arc surface CD and turnover plane DE; The left end of second Combined gliding plate 7 (upper end) is positioned at the intersection of 1/4 arc surface AB and spacing curved surface EA, and right-hand member (lower end) is positioned at the intersection of transition cambered surface BC and 1/4 arc surface CD, shown in Fig. 1 (b).When rotor was pressed A → B → C → D direction and rotated, two Combined gliding plates together rotated with rotor body 5, and intersection slip on rotor body 5.Second Combined gliding plate 7 is being forwarded to by the AC position in the process of BD position, and it up and down keeps Elastic Contact with the 1/4 arc surface AB and the 1/4 arc surface CD of inner chamber respectively in two ends, and therefore the length of second Combined gliding plate 7 is constant, and keeps static with respect to rotor body 5.Simultaneously, the right-hand member of first Combined gliding plate 6 is rotated to the C end by the B end along transition cambered surface BC, and its left end is then rotated to the A end by the E end in spacing curved surface EA zone; After the left end of first Combined gliding plate 6 got into spacing curved surface EA zone, the thrust of first elastic element 8 increased the length of first Combined gliding plate 6, and its left end contacts with spacing curved surface EA; Along with the right-hand member of first Combined gliding plate 6 forwards the C end along transition cambered surface BC to by the B end; The utmost point footpath of transition cambered surface BC reduces continuously; Promote 19 slippages left in first guiding groove of first Combined gliding plate 6; The left end of first Combined gliding plate 6 slides along spacing curved surface EA simultaneously, and until arriving the A end, the right-hand member of first Combined gliding plate 6 arrives the C end of transition cambered surface BC at this moment.When first Combined gliding plate 6 forwards the AC position to and second Combined gliding plate 7 when forwarding the BD position to, two Combined gliding plate switching motions repeat the rotary course of 90 ° of fronts.Afterwards, periodically repeat above action when first Combined gliding plate 6 and second Combined gliding plate 7.
Three, the effect of relief groove
Special-shaped chamber vacuum pump is in operation process, and when a slice slide plate was held to import 2 slips along spacing curved surface EA from E, the volume of this slide plate rear portion cavity increased continuously, produces negative pressure, makes rotor receive a resisting moment effect.After being processed with relief groove 31 on the stator, import 2 and slide plate rear portion cavity be in connected state constantly, so this negative pressure is eliminated.
Four, the effect of compensating groove
Special-shaped chamber vacuum pump is in operation process, and when a slice slide plate was held to outlet 3 slips along transition cambered surface BC from B, the volume of this slide plate rear portion cavity reduced continuously, and gas pressure increases in the cavity, makes rotor receive a resisting moment effect; At this moment, second compensating groove 26 on the stator 1 will export 3 and be communicated with the cavity at this slide plate rear portion, play release pressure.Similarly, whenever a slice slide plate along transition cambered surface BC from exporting 3 when C end slides, the volume of the anterior cavity of this slide plate reduces continuously, pressure increases, and makes rotor receive a resisting moment effect; At this moment, first compensating groove 4 on the stator 1 will export 3 with the anterior cavity of slide plate is communicated with, make this pressure obtain release.
Second compensating groove 26 can be cancelled.If do not establish second compensating groove 26, slide plate is in that end is to the process that outlet 3 is slided along transition cambered surface BC from B, and the gas in its rear portion cavity is compressed, therefore when this part cavity with export 3 together with the time, can alleviate the effect that outlet side gas recoils in cavity.
Five, the effect of pod apertures
When first Combined gliding plate 6 forwards the BD position to by the AC position and second Combined gliding plate 7 when forwarding the AC position to by the BD position; First Combined gliding plate 6 keeps static with respect to rotor body 5, and 7 of second Combined gliding plates slide in second guiding groove 20 of rotor body 5 to the left.In this process, first pod apertures 15 that is positioned on the T-shape ski board 32 of first Combined gliding plate, 6 bottoms is in coaxial position with middle pod apertures 17 on the rotor body 5, with two chambers connections about between two flute profile slide plates 33 of second Combined gliding plate 7.Because second Combined gliding plate 7 slides left; The volume of left chamber increases the formation negative pressure continuously; And the volume of right chamber reduces to form malleation continuously; Therefore the gas in the right chamber flows into left chamber through the middle pod apertures 17 and first pod apertures 15, vapour lock can not take place, and rotor can be rotated smoothly.Simultaneously, pod apertures also has certain damping function to the slip of second Combined gliding plate 7, can weaken the impact force of 7 pairs of stators of second Combined gliding plate.
Similarly; When second Combined gliding plate 7 forwards the BD position to by the AC position and first Combined gliding plate 6 when forwarding the AC position to by the BD position; Second Combined gliding plate 7 keeps static with respect to rotor body 5, and 6 of first Combined gliding plates slide in first guiding groove 19 of rotor body 5 to the left.In this process, second pod apertures 16 that is positioned on the flute profile slide plate 33 of second Combined gliding plate, 7 bottoms is in coaxial position with flank pod apertures 18 on the rotor body, and two chambers about between two T-shape ski boards 32 of first Combined gliding plate 6 are communicated with.Because first Combined gliding plate 6 slides left; The volume of left chamber increases continuously and forms negative pressure and the volume of right chamber reduces to form malleation continuously; Therefore the gas in the right chamber flows into left chamber through the flank pod apertures 18 and second pod apertures 16; Vapour lock can not take place, rotor can be rotated smoothly.Simultaneously, pod apertures also has certain damping function to the slip of first Combined gliding plate 6, can weaken the impact force of 6 pairs of stators of first Combined gliding plate.
Claims (2)
1. special-shaped chamber vacuum pump; It is characterized in that comprising by the stator (1) that has irregular cylinder inner chamber, import (2), outlet (3), first compensating groove (4), second compensating groove (26) and relief groove (31) and the upper cover plate (12) and the lower cover plate (22) that are installed on stator (1) both ends of the surface constituting Seal cage, rotor is installed in Seal cage;
The irregular cylinder inner chamber of stator (1) is connected successively by quadrant cambered surface AB, transition cambered surface BC, quadrant cambered surface CD, turnover plane DE and spacing curved surface EA and constitutes; Quadrant cambered surface AB and quadrant cambered surface CD are coaxial; The centre of curvature that transition cambered surface BC goes up B end and C end is positioned on the common axis O of quadrant cambered surface AB and quadrant cambered surface CD; The utmost point footpath ρ of transition cambered surface BC and radius of curvature R ' hold the C end to reduce continuously by B, utmost point footpath ρ and radius of curvature R ' maximum and equal, i.e. ρ at B end place
Max=R '
Max=a, utmost point footpath ρ and radius of curvature R ' minimum and equal, i.e. ρ at C end place
Min=R '
Min=b;
The maximum curvature radius a equal in length of the radius R of quadrant cambered surface AB and transition cambered surface BC, i.e. R=a; The minimum profile curvature radius b equal in length of the radius r of quadrant cambered surface CD and transition cambered surface BC, i.e. r=b; Transition cambered surface BC and quadrant cambered surface AB are tangent at the B end, form smooth transition; Transition cambered surface BC and quadrant cambered surface CD are tangent at the C end, form smooth transition; Spacing curved surface EA and quadrant cambered surface AB are tangent at the A end, form smooth transition; Turnover plane DE and quadrant cambered surface CD intersect at the D end, intersect at the E end with spacing curved surface EA, form by the ladder transition of quadrant cambered surface CD to spacing curved surface EA; Spacing curved surface EA meets the following conditions:
Cross the common axis O of quadrant cambered surface AB and quadrant cambered surface CD and perpendicular to the length L of limited curved surface EA of the arbitrary line of O and the transversal section ce of transition cambered surface BC institute
Ce, more than or equal to the radius sum of quadrant cambered surface AB and quadrant cambered surface CD, promptly
L
ce≧R+r=a+b；
Import (2) on the stator (1) is opened in the zone of spacing curved surface EA, and outlet (3) is opened in the zone of transition cambered surface BC; First compensating groove (4) and second compensating groove (26) all are opened in the zone of transition cambered surface BC; One end of first compensating groove (4) arises from the C end of transition cambered surface BC, the other end and outlet (3) UNICOM; One end of second compensating groove (26) arises from the B end of transition cambered surface BC, the other end and outlet (3) UNICOM; Relief groove (31) is opened in the zone of spacing curved surface EA, and an end arises from the E end of spacing curved surface EA, the other end and import (2) UNICOM; Upper-end surface (27) and lower end surface (28) of stator (1) are smooth flat, and the two is parallel to each other, and perpendicular to the bus of each cambered surface of irregular cylinder inner chamber;
Upper cover plate (12) and lower cover plate (22) are flat board, utilize screw to fix with the upper-end surface (27) and the lower end surface of stator (1) respectively, form Seal cage; The center of upper cover plate (12) is processed with clutch shaft bearing hole (13), and the center of lower cover plate (22) is processed with second bearing hole (14), and clutch shaft bearing hole (13) are through hole, and second bearing hole (14) is a blind hole;
Rotor is made up of rotor body (5), first Combined gliding plate (6) and second Combined gliding plate (7); Rotor body (5) is processed with the cylindrical body of criss-crossing guiding groove, the coaxial transmission shaft (9) that is processed with in cylindrical upper end, the coaxial centration axis (10) that is processed with in cylindrical lower end for the middle part; The radius R of rotor body (5)
1Equate with the radius r of quadrant cambered surface CD, i.e. R
1=r; The height h of rotor body (5) equates with the height H of stator (1), i.e. h=H; Criss-crossing guiding groove on the rotor body (5) is made up of first guiding groove (19) and second guiding groove (20), and the guide surface of these two guiding grooves all is parallel to the axes O of rotor body (5); First guiding groove (19) and second guiding groove (20) are the center symmetry, and all along radially incision rotor body (5) certain depth of rotor body (5), the incision section connects along the axial direction of rotor body (5) both wings of each guiding groove simultaneously; The middle part of first guiding groove (19) is processed with a rectangle or manhole, and this through hole makes the radially perforation of first guiding groove (19) along rotor body (5); Second guiding groove (20) locates respectively to be processed with a rectangle or manhole in upper-end surface (23) and lower end surface (24) of rotor body (5), respectively along the radially perforation of rotor body (5); The cylindrical body middle part of rotor body (5) is processed with one perpendicular to the axes O of rotor body (5) and the middle pod apertures (17) parallel with second guiding groove (20), and the part that second guiding groove (20) is positioned at the axes O both sides is interconnected; The cylindrical body of rotor body (5) respectively is being processed with one perpendicular to the axes O of rotor body (5) and the flank pod apertures (18) parallel with first guiding groove (19) near transmission shaft (9) root with near centration axis (10) root, and the part that first guiding groove (19) is positioned at the axes O both sides is interconnected;
First Combined gliding plate (6) is combined by two block-shaped and identical T-shape ski boards of size (32) and one first elastic element (8); The top (25) of T-shape ski board (32) is an arc surface, and cambered surface radius is less than or equal to the radius R of rotor body (5)
1Be processed with one first pod apertures (15) at the place of keeping to the side, bottom of T-shape ski board (32), the location that is processed with first elastic element (8) at bottom end face holds hole (21); The bottom of two T-shape ski boards (32) each other over against, first elastic element (8) is positioned between two T-shape ski boards (32), makes two T-shape ski boards (32) produce mutual thrust; Second Combined gliding plate (7) is combined by two block-shaped and identical flute profile slide plates of size (33) and two second elastic elements (11); The shape at flute profile slide plate (33) top (29) is identical with the shape at T-shape ski board (32) top; Respectively be processed with one second pod apertures (16) at the place of keeping to the side, bottom of (33) two groove legs of flute profile slide plate, respectively be processed with the appearance hole (34), location of second elastic element (11) at the bottom end face of two groove legs; The groove leg of two flute profile slide plates each other over against, two second elastic elements (11) lay respectively between two pairs of groove legs, make two flute profile slide plates (33) produce mutual thrust; The thickness of T-shape ski board (32) equates that with the width of first guiding groove (19) thickness of flute profile slide plate (33) equates with the width of second guiding groove (20); The height h of T-shape ski board (32)
1Height h with flute profile slide plate (33)
2Be equal to the height h of rotor body (5), i.e. h
1=h
2=h; First Combined gliding plate (6) is installed in sliding matching mode in first guiding groove (19) of rotor body (5), and second Combined gliding plate (7) is installed in second guiding groove (20) of rotor body (5) with sliding matching mode; The length L of T-shape ski board (32)
1, flute profile slide plate (33) length L
2Satisfy relation: 2L with the radius R of quadrant cambered surface AB and the radius r of quadrant cambered surface CD
1≦ R+r, 2L
2≦ R+r;
Rotor cooperates with the clutch shaft bearing hole (13) of upper cover plate (12) and second bearing hole (14) rotation of lower cover plate (22) respectively through transmission shaft (9) on the rotor body (5) and centration axis (10); Simultaneously; The quadrant cambered surface AB of being slidingly matched of the lower end surface (24) of being slidingly matched of the upper-end surface (23) of being slidingly matched of the quadrant cambered surface CD of the cylndrical surface (30) of rotor through rotor body (5) and irregular cylinder inner chamber, rotor body (5) and upper cover plate (12), rotor body (5) and lower cover plate (22), first Combined gliding plate (6) and second Combined gliding plate (7) and irregular cylinder inner chamber is slidingly matched; And being slidingly matched of first Combined gliding plate (6) and first guiding groove (19) and being slidingly matched of second Combined gliding plate (7) and second guiding groove (20), constitute and let out the motive sealing system in anti-;
In the time of in the two ends of first Combined gliding plate (6) are in quadrant cambered surface AB zone respectively and in the quadrant cambered surface CD zone; Be in first pod apertures (15) of the T-shape ski board (32) in the quadrant cambered surface CD zone and the middle pod apertures (17) of rotor body (5) and be in coaxial position; The both sides of second guiding groove (19) are communicated with; At this moment; Second Combined gliding plate (7) is in flute profile slide plate (33) in the spacing curved surface EA zone under the thrust and flute profile slide plate (33) self action of centrifugal force of second elastic element (11), and keep in touch with spacing curved surface EA its top (29); In the time of in the two ends of second Combined gliding plate (7) are in quadrant cambered surface AB zone respectively and in the quadrant cambered surface CD zone; Be in second pod apertures (16) of the flute profile slide plate (33) in the quadrant cambered surface CD zone and the flank pod apertures (18) of rotor body (5) and be in coaxial position; The both sides of first guiding groove (19) are communicated with; At this moment; First Combined gliding plate (6) is in T-shape ski board (32) in the spacing curved surface EA zone under the thrust and T-shape ski board (32) self action of centrifugal force of first elastic element (8), and keep in touch with spacing curved surface EA its top (25).
2. special-shaped chamber according to claim 1 vacuum pump; The profilogram that it is characterized in that bore of stator transition cambered surface BC; It is transition curve; When the prominent circular curve of the just prominent triangle of the Ye Dingwei of first, second two secondary Combined gliding plate (6,7) or symmetry, transition curve satisfies polar equation formula (1):
ρ representes the utmost point footpath of transition curve in the formula; R>=ρ>=r; θ representes the polar angle of transition curve,
the spacing curve corresponding with this transition curve satisfy equation (2):
In the formula, R>r ' >=r.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101747516A CN102678553A (en) | 2012-05-28 | 2012-05-28 | Vacuum pump with special-shaped cavity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101747516A CN102678553A (en) | 2012-05-28 | 2012-05-28 | Vacuum pump with special-shaped cavity |
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Family
ID=46810959
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| CN2012101747516A Pending CN102678553A (en) | 2012-05-28 | 2012-05-28 | Vacuum pump with special-shaped cavity |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105090726A (en) * | 2015-07-21 | 2015-11-25 | 哈尔滨东安发动机（集团）有限公司 | Rotating plate type lubricating oil pump |
| CN105179913A (en) * | 2015-09-29 | 2015-12-23 | 哈尔滨东安发动机（集团）有限公司 | Two-stage rotary plate type displacement pump |
| CN113153748A (en) * | 2020-12-25 | 2021-07-23 | 南京工业职业技术大学 | Through-shaft traveling scraper type compressor and using method thereof |
| CN113738567A (en) * | 2020-09-18 | 2021-12-03 | 宁波弗德消防科技有限公司 | Fluid driven device and fluid driven proportioner system and method thereof |
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| CN113738567A (en) * | 2020-09-18 | 2021-12-03 | 宁波弗德消防科技有限公司 | Fluid driven device and fluid driven proportioner system and method thereof |
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Application publication date: 20120919 |