CN109026680B - Balanced type flexible combined blade and rotor pump - Google Patents
Balanced type flexible combined blade and rotor pump Download PDFInfo
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- CN109026680B CN109026680B CN201811009344.3A CN201811009344A CN109026680B CN 109026680 B CN109026680 B CN 109026680B CN 201811009344 A CN201811009344 A CN 201811009344A CN 109026680 B CN109026680 B CN 109026680B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
- F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
- F04C2/3446—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along more than one line or surface
- F04C2/3447—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along more than one line or surface the vanes having the form of rollers, slippers or the like
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0042—Systems for the equilibration of forces acting on the machines or pump
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A balanced flexible combined vane and a rotor pump, wherein the vane comprises a vane body and a rolling support sleeve group, the vane body comprises a divergent arc section at the upper end, a rectangular section at the middle part and a divergent elliptical section at the lower end, and the diameter of the divergent arc section is smaller than the length of the major axis of the divergent elliptical section; the rolling support sleeve group comprises a support frame and a roller; the rotor pump comprises a pump body, a main shaft, a flexible rotor and balanced flexible combined blades, wherein a fluid inlet is formed in the side face of the pump body, and a fluid outlet is formed in the top of the pump body; the inner end of the main shaft extends into the cylindrical inner cavity, and the outer end of the main shaft is connected with external driving equipment; the flexible rotor is coaxially sleeved at the inner end part of the main shaft; the flexible rotor is provided with a plurality of blade grooves which are used for installing balanced flexible combined blades and have consistent rotation directions along the circumferential direction. The beneficial effects of the invention are as follows: the problems of instability of the blades under the complex operation conditions and the action of fluid media or loads and serious friction and abrasion between the blades and the pump body are solved, so that the service lives and the working efficiency of the blades and the rotor pump are greatly prolonged.
Description
Technical Field
The invention relates to a balanced flexible combined vane and a rotor pump.
Background
The rotor pump is a typical positive displacement pump, has the characteristics of small volume, large flow, high pressure resistance, no leakage and the like, and is suitable for long-distance and high-resistance quantitative conveying. The traditional rotor pump comprises a pump body, a rotor, an end cover and other structures.
In contrast to conventional rotor pumps, flexible rotor pumps are typically provided with flexible blades made of rubber on the rotor. Along with the rotation of the rotor, the flexible blades are continuously deformed, adapt to different rotation speeds, fluid viscosity and pressure through self-adjusting expansion or bending modes, and are always in contact with the inner wall of the pump body, so that variable volume elements are formed between two adjacent flexible blades and the pump body, and continuous suction and discharge of fluid are realized.
As a core element of the flexible rotor pump, the flexible vane is required to bear high-frequency deflection and long-time sliding friction with the pump body in the running process of the rotor pump. Particularly, when high rotational speeds, variable loads or complex media containing gas liquids, foam liquids and the like are transported, the flexible blades are susceptible to large deflection instability with significant frictional heating. Therefore, the flexible blade is thermally hardened, the wear rate and leakage loss are increased, the conveying medium is vaporized, the pump efficiency is reduced, the vibration of the eccentric rotor is increased, and even the blade is directly damaged under the combined action of larger medium pressure and inner wall friction force.
The problems greatly limit the conveying efficiency and the service life of the flexible rotor pump, so that a novel efficient and stable flexible blade and rotor pump are very necessary to design, and the problems of short service life, high frictional heat generation and the like of the flexible blade under complex working conditions are solved.
Disclosure of Invention
In order to solve the problems, the invention provides a balanced flexible combined vane and a rotor pump which can solve the problems of instability of the vane under the complex operation condition, fluid medium or load and serious friction and abrasion between the vane and a pump body so as to greatly improve the service life and the working efficiency.
The invention relates to a balanced flexible combined blade, which is characterized in that: the blade body comprises a divergent arc section at the upper end, a rectangular section at the middle part and a divergent elliptical section at the lower end, and the diameter of the divergent arc section is smaller than the length of the major axis of the divergent elliptical section; the bottom of the blade body is axially provided with a plurality of grooves for installing the rolling support sleeve, and the upper end surface of each groove is an arc surface which is recessed downwards;
the rolling support sleeve comprises a support frame and rollers, the support frame is clamped into the groove and then hinged with the bottom of the blade body, and a gap is reserved between the highest point of the upper end of the support frame and the lowest point of the arc-shaped surface; the bottom of the support frame is provided with a roller which is used for being pressed on the inner circular surface of the inner cavity of the pump body and rolling along the inner circular surface.
The support frame is non-isosceles triangle-like structure, and wherein the top contained angle of support frame is the obtuse angle, and the top of support frame is equipped with the shaft hole that supplies the support axle to run through, and the bottom installation can be followed the rolling gyro wheel of pump body inner circle face.
The bottom contained angle department of support frame respectively is equipped with a gyro wheel groove that is used for installing the gyro wheel to be equipped with the gyro wheel of installing on the support frame through the riveting mode in the gyro wheel groove, and gyro wheel and the interior round surface of pump body inner chamber tangent contact all the time, and guarantee to leave the clearance between support frame bottom and the face of cylinder.
The axial front end and the axial rear end of the bottom of the blade body are respectively provided with a groove for installing a rolling support sleeve, a through hole for a bracket shaft to penetrate is arranged between the outer side end surface of the groove and the blade body end surface on the same side, and a blind hole coaxial with the through hole on the same side is arranged on the inner side end surface of the groove; the inner end of the bracket shaft sequentially penetrates through the through hole and the shaft hole and then is inserted into the blind hole, so that the hinge joint of the bracket shaft and the blade body is realized; the support shaft is connected with the blade body through a locating pin and used for realizing the axial locating of the support shaft.
The invention relates to a rotor pump constructed by using a balanced flexible combined blade, which is characterized in that: the device comprises a pump body, a main shaft, a flexible rotor and balanced flexible combined blades, wherein a fluid inlet is arranged on the side surface of the pump body, a fluid outlet is arranged on the top of the pump body, and the fluid inlet and the fluid outlet are communicated with a cylindrical inner cavity of the pump body; the inner end of the main shaft extends into the cylindrical inner cavity from the eccentric hole of the pump body, and the outer end of the main shaft falls outside the pump body and is connected with external driving equipment; the flexible rotor is coaxially sleeved at the inner end part of the main shaft, and the flexible rotor and the main shaft are connected through keys; the flexible rotor is provided with a plurality of blade grooves which are used for installing balanced flexible combined blades and have the same rotation direction along the circumferential direction; the blade groove is joggled with the upper part of the blade body of the balance type flexible combined blade inserted into the blade groove; the support frame of the rolling support sleeve group is arranged in a mode that the front part is long and the rear part is short along the rotation direction, the roller is in contact with the inner circular surface of the inner cavity of the pump body and rolls along the circumferential direction of the inner circular surface all the time, gaps are reserved between the outer contour of the gradually-expanding elliptical section of the blade body and the bottom end of the support frame of the rolling support sleeve group and the inner circular surface all the time, one side of the support frame, which pushes the fluid medium to rotate towards the direction of the fluid outlet, is defined as the front part, and one side opposite to the front part of the support frame is defined as the rear part.
The main shaft is axially arranged along the inner cavity of the pump body, and the main shaft is offset to the direction of the fluid outlet above the pump body, namely, the main shaft central shaft and the central shaft of the inner cavity of the pump body are arranged right above the central shaft of the cylindrical inner cavity of the pump body while the central shaft of the main shaft and the central shaft of the inner cavity of the pump body are in a coplanar plane.
The axial length of the balance type flexible combined blade is consistent with that of the cylindrical inner cavity.
The flexible rotor is uniformly provided with 4-8 blade grooves along the circumferential direction, the notch direction of the blade grooves is consistent with the rotation direction of the flexible rotor, the radial included angle of the blade grooves is 20-40 degrees, and the radial included angle of the blade grooves is defined as the included angle between the longitudinal symmetry axis of the blade grooves and the radius of the flexible rotor intersecting with the longitudinal symmetry axis.
A transition fillet is arranged on the outer side of the front groove side of the blade groove.
The profile of the blade groove is consistent with the upper outer profile of the blade body.
The beneficial effects of the invention are mainly shown in the following steps:
the balanced flexible combined blades adopt the assembly form of the blade body and the rolling support sleeve group, and the combined blades have good geometric and mechanical stability by utilizing the elasticity of the blade body and the special triangular support and the double-roller design of the rolling support sleeve group, namely, each combined blade can be kept in a front-back multipoint rolling contact balanced state with the wall surface of the inner cavity of the pump body at any rotating position in the working process of the flexible rotor pump, so that the instability or turnover problem of the flexible blades under the complex operation working condition is effectively avoided, the friction between the blade body and the pump body is weakened, the service life of the flexible blades is greatly prolonged, and the efficient and reliable operation of the rotor pump is ensured.
Compared with the traditional vertical slotting or rotor blade integration mode, the pre-bending and abrasion loss of the blade body can be reduced as much as possible, the large-deflection bending of the blade body at the maximum eccentric position is effectively avoided, and the problems of sudden change of the root stress of the blade at the outer side of the rotor and even breakage of the blade are solved.
The rotor pump main body is simple and portable in structure, the flexible rotor and the balanced flexible combined blades are connected in a joggled mode, so that the connection strength of the flexible rotor and the combined blades can be ensured, and the assembly efficiency of the flexible rotor pump can be improved; the flexible combined blade adopts a detachable form, so that the maintenance and the replacement are convenient, and the maintenance cost is reduced.
Drawings
FIG. 1 is a front view of a balanced flexible composite vane.
FIG. 2 is an axial view of a balanced flexible composite vane.
FIG. 3 is a longitudinal cross-sectional view taken along line A-A of FIG. 2.
Fig. 4 is an axial view of the blade body in the balanced flexible composite blade.
FIG. 5 is a schematic diagram of a rotor pump with balanced flexible composite vane according to an embodiment of the present invention.
Fig. 6 is a cross-sectional view of a flexible rotor of the rotor pump of fig. 5.
Detailed Description
The invention is further described below with reference to the drawings.
Referring to the drawings:
embodiment 1 the balanced type flexible combined blade 8 of the invention comprises a blade body 1 and a rolling support sleeve group 2, wherein the blade body 1 comprises a divergent arc section 11 at the upper end, a rectangular section 12 in the middle and a divergent elliptical section 13 at the lower end, and the diameter of the divergent arc section 11 is smaller than the length of the long axis of the divergent elliptical section 13; the bottom of the blade body 1 is axially provided with two grooves (14 a, 14 b) for mounting the rolling support sleeve group 2, and the upper end surfaces of the grooves (14 a, 14 b) are arc surfaces 141 recessed downwards;
a set of rolling support sleeve sets 2 are correspondingly arranged in each groove, each rolling support sleeve set 2 comprises a support frame 21 and two rollers (24 a, 24 b), the support frames 21 are clamped into the grooves and then hinged with the bottoms of the blade bodies 1, and a gap is reserved between the highest point of the upper ends of the support frames 21 and the lowest point of the arc-shaped surfaces 141; the bottom of the supporting frame 21 is provided with rollers (24 a, 24 b) which are used for pressing on the inner circular surface 3 of the inner cavity of the pump body and rolling along the inner circular surface 3.
The support frame 21 is of a non-isosceles triangle-like structure, wherein the top included angle of the support frame is an obtuse angle, the top of the support frame 21 is provided with a shaft hole for the support shaft 22 to penetrate, and rollers (24 a, 24 b) capable of rolling along the inner circular surface 3 of the inner cavity of the pump body are arranged at the bottom of the support frame.
The bottom included angle of the supporting frame 21 is respectively provided with a roller groove for installing rollers, rollers (24 a, 24 b) installed on the supporting frame 21 in a riveting mode are arranged in the roller grooves, the rollers (24 a, 24 b) are always in tangential contact with the inner circular surface 3 of the inner cavity of the pump body, and a gap is reserved between the bottom end of the supporting frame 21 and the inner circular surface 3.
The axial front and rear ends of the bottom of the blade body 1 are respectively provided with a groove (14 a, 14 b) for installing the rolling support sleeve group 2, wherein a through hole (15 a, 15 b) for a bracket shaft 22 to penetrate is arranged between the outer side end surface of the grooves (14 a, 14 b) and the front end surface or the rear end surface of the blade body 1 at the same side, and blind holes (16 a, 16 b) coaxial with the through holes at the same side are arranged on the inner side end surfaces of the grooves (14 a, 14 b); the inner end of the bracket shaft 22 sequentially penetrates through the through holes (15 a, 15 b) and the shaft holes and then is inserted into the blind holes (16 a, 16 b) to realize the hinge joint of the bracket shaft 22 and the blade body 1; the support shaft 22 is connected with the blade body 1 through a locating pin 23, and is used for realizing the axial positioning of the support shaft 22.
Embodiment 2 a rotor pump constructed by using the balanced type flexible combined vane according to the present invention includes a pump body 4, a main shaft 6, a flexible rotor 7 and a balanced type flexible combined vane 8, wherein a fluid inlet 41 is provided on a side surface of the pump body 4, a fluid outlet 42 is provided on a top portion of the pump body, and the fluid inlet 41 and the fluid outlet 42 are both communicated with a cylindrical inner cavity 5 of the pump body 4; the inner end of the main shaft 6 extends into the inner cavity 5 from the eccentric hole of the pump body 4, and the outer end of the main shaft falls out of the pump body 3 and is connected with external driving equipment; the flexible rotor 7 is coaxially sleeved at the inner end part of the main shaft 6, and the flexible rotor and the main shaft are connected through keys; the flexible rotor 7 is provided with a plurality of blade grooves 72 along the circumferential direction, wherein the blade grooves are used for installing balanced flexible combined blades and have consistent rotation directions; the blade groove 72 is joggled with the upper part of the blade body 1 of the balance type flexible combined blade 8 inserted therein; the support frames 21 of the rolling support sleeve group 2 are arranged in a mode of being long in front and short in back along the rotation direction, the rollers (24 a, 24 b) are in contact with the inner circular surface 3 of the inner cavity of the pump body and roll along the circumferential direction of the inner circular surface 3 all the time, gaps are reserved between the outer contour of the gradually-expanding elliptical section 13 of the blade body 1 and the bottom end of the support frame 21 of the rolling support sleeve group and the inner circular surface 3 all the time, one side of the support frame, which pushes a fluid medium to rotate towards the fluid outlet direction, is defined as the front part, and one side opposite to the front part of the support frame is defined as the rear part.
The main shaft 6 is axially arranged along the inner cavity 5 of the pump body 4, and the main shaft 6 is offset towards the direction of a fluid outlet above the pump body 4, namely, the main shaft central shaft is positioned right above the central shaft of the cylindrical inner cavity of the pump body when the main shaft central shaft and the central shaft of the inner cavity of the pump body are in a coplanar plane.
The axial length of the balanced flexible combination vane 8 is consistent with the axial length of the inner cavity 5.
The flexible rotor 7 is uniformly provided with 4-8 blade grooves 72 along the circumferential direction, the notch direction of the blade grooves 72 is consistent with the rotation direction of the flexible rotor 7, the radial included angle alpha of the blade grooves 72 is 20-40 degrees, and the radial included angle alpha of the blade grooves 72 is defined as the included angle between the longitudinal symmetry axis of the blade grooves and the radius of the flexible rotor intersecting with the longitudinal symmetry axis.
The front slot side outer side of the vane slot 72 is provided with a transition fillet 73.
The contour of the blade groove 72 corresponds to the upper outer contour of the blade body 1.
Embodiment 3 the invention relates to a balanced flexible combined blade, which comprises a blade body 1 and a rolling support sleeve group 2, wherein the upper end of the blade body 1 is provided with a divergent arc section 11, the middle main body is provided with a rectangular section 12, the lower end is provided with a divergent elliptical section 13, and the length of the long axis of the divergent elliptical section 13 is larger than the diameter of the divergent arc section 11; the lower end of the blade body 1 is axially provided with a front groove and a rear groove (14 a, 14 b), and the grooves (14 a, 14 b) are respectively positioned near the front end surface and the rear end surface of the blade body and are used for respectively placing a set of rolling support sleeve sets 2; the upper end surfaces of the grooves (14 a, 14 b) are concave to form an arc-shaped surface 141, and a tiny gap is reserved between the lower top point of the arc-shaped surface and the upper top point of the matched rolling support sleeve group 2; the blade body 1 is provided with two through holes (15 a, 15 b) on the axial outer end face close to the grooves (14 a, 14 b), and two blind holes (16 a, 16 b) on the axial inner end face; the lower vertex of the diverging elliptical section 13 of the blade body 1 is slightly higher than the lower vertex of the inner circular surface 3 of the pump body, i.e. a tiny gap exists between the bottom of the blade body 1 and the inner circular surface 3 of the pump.
The rolling support sleeve group 2 comprises a support frame 21 and rollers (24 a, 24 b), wherein the main body of the support frame 21 is in an irregular triangular shape, the top included angle is set to be a fixed obtuse angle, and the rolling support sleeve group is arranged in a mode of being long in front and short in back along the rotation direction; the upper part of the supporting frame 21 is provided with a shaft hole, the inner diameter of the shaft hole is equal to that of the through holes (15 a, 15 b), the supporting frame shaft 22 passes through the through holes (15 a, 15 b) and the shaft hole to be installed on the blind holes (16 a, 16 b), the diameter of the blind holes (16 a, 16 b) is slightly smaller than the diameter of the inner end of the supporting frame shaft 22, so that the supporting frame shaft 22 is elastically supported and fixed by the blade body, and the supporting frame shaft 22 is fixed in grooves at two ends of the blade body 1 in the through holes (15 a, 15 b) through corresponding positioning pins 23. The left and right sides below the supporting frame 21 are respectively provided with a roller groove, rollers (24 a, 24 b) which are installed on the supporting frame 21 in a riveting mode are arranged in the roller grooves, the rollers (24 a, 24 b) are in tangential contact with the pump inner circular surface 3, the rollers (24 a, 24 b) are ensured to roll along the pump inner circular surface 3, and a tiny gap exists between the bottom of the supporting frame 21 and the pump inner circular surface 3.
Example 4 with reference to fig. 5, a rotor pump according to the present invention provided with the aforementioned balanced flexible combination vane is shown, in which: a fluid inlet 41 is formed in one side of the pump body, a fluid outlet 42 is formed in the upper side of the opposite side of the pump body, a cylindrical inner cavity 5 is formed in the pump body, a flexible rotor 7 is arranged after the inner end of a main shaft 6 is inserted into the inner cavity 5, the outer end of the main shaft 6 extends out of the inner cavity 5, and a driving device motor is externally connected; the main shaft 6 is axially arranged along the inner cavity 5 of the pump body 4, and the main shaft 6 is offset towards the direction of a fluid outlet above the pump body 4, namely, the main shaft central shaft is positioned right above the central shaft of the cylindrical inner cavity of the pump body when the main shaft central shaft and the central shaft of the inner cavity of the pump body are in a coplanar plane.
The main shaft 6 is provided with a flexible rotor 7 which can synchronously and circumferentially rotate along with the main shaft, the flexible rotor 7 is eccentrically arranged, and a key groove 71 matched with a key on the main shaft is formed in the flexible rotor 7 and used for circumferentially positioning the flexible rotor on the main shaft 6, so that the flexible rotor 7 can synchronously rotate along with the main shaft 6. The flexible rotor 7 is provided with 6 vane grooves 72, the vane grooves 72 are uniformly arranged along the circumferential direction, the notches of the vane grooves are consistent along the rotation direction of the flexible rotor 7, the radial included angle of the notches is 20 degrees, and a fillet transition 73 is arranged outside the front groove edge of the vane groove 72.
The blade groove 72 is internally joggled with a balanced flexible combined blade 8, the axial length of the blade body 1 at the upper part of the balanced flexible combined blade 8 is equal to that of the inner cavity 5, and a tiny gap is reserved between the blade body 1 and the inner circular surface 3 of the pump all the time when the blade body is in different rotation positions so as to prevent the blade body 1 from directly contacting with the inner circular surface of the pump; the 2 sets of rolling support sleeve sets 2 at the lower part of the balanced flexible combined blade 8 are connected to the two ends of the blade body 1 through corresponding support shafts 22, and rollers (24 a, 24 b) at the lower part of the rolling support sleeve sets 2 are in direct contact with the pump body 4, namely, each balanced flexible combined blade 8 is provided with front and rear 2 pairs of rollers to do rolling motion along the inner circular surface 3 of the pump.
The working principle of the invention is as follows:
in the rotor pump, a flexible rotor 7 is eccentrically arranged, balanced flexible combined blades 8 are arranged in blade grooves 72 on the flexible rotor 7, a blade body 1 at the upper end of the balanced flexible combined blades is in a completely straightened state at the lower vertex of an inner cavity 5, the upper vertex of the inner cavity 5 is in a maximum curvature state, a 2-set rolling support sleeve group 2 at the lower end is in direct contact with an inner circular surface 3 of the pump under the elastic action of the blade body 1, and a small gap exists between the bottoms of the blade body 1 and a support frame 21 and a pump body 4. The balanced flexible combined blade 8 can be deformed in a rotation manner in a predetermined direction by presetting an inclined mounting state and a joggle joint manner, and the pre-bending and abrasion amount of the blade body 1 can be reduced as much as possible.
When the rotor pump works, the flexible rotor 7 rotates under the drive of the main shaft 6, the balance type flexible combined blade 7 rotates along with the rotation, the pump body 4, the flexible rotor 7 and the balance type flexible combined blade 8 form a plurality of unit working cavities in the inner cavity 5, and the balance type flexible combined blade 8 directly acts energy on a fluid medium in a static pressure mode. When the balanced flexible combination vane 8 rotates to be close to the fluid inlet 41, the volume of the unit working chamber is increased, a low-pressure area is generated in the pump, medium enters the pump through the fluid inlet 41 and moves circumferentially under the drive of the flexible rotor 7 and the balanced flexible combination vane 8, the volume of the unit working chamber is gradually reduced under the influence of the upward eccentric arrangement of the flexible rotor 7, the pressure of the fluid medium is increased, and the fluid medium is extruded and discharged when reaching the fluid outlet 42. With the continuous rotation of the flexible rotor 7, the suction and discharge processes are alternately implemented by the plurality of unit working chambers, and the fluid medium is continuously conveyed.
In the process that the balance type flexible combined blade 8 rotates along with the flexible rotor 7, the blade body 1 generates periodic deflection along with the change of unit working volume, and the divergent sections at the upper end and the lower end strengthen the bending toughness of the blade body 1, ensure the joggle strength between the blade body 1 and the rotor pump and the circumferential and radial position relationship, and reduce leakage loss. The rolling support sleeve group 2 is always contacted with the inner wall of the pump body 4 under the reaction force of the pressed blade body 1 and keeps stable, on one hand, the balancing antifriction sleeve group 2 adopts a triangular support structure with long front and short back, and is arranged in front and back along the axial direction, so that the balancing flexible combined blade 8 has better geometric and mechanical stability, the contact pressure of the blade body 1 to the pump body 4 is effectively dispersed and reduced, the balancing flexible combined blade 8 can keep a stable balanced state supported by the pump body 4 at any position at multiple points, the instability and even damage of the blade body 1 under the conditions of high rotating speed, high medium pressure, multiphase conveying medium or other complex working conditions are avoided, on the other hand, the lower part of the rolling support sleeve group 2 adopts a double-roller design, rollers (24 a and 24 b) always perform pure rolling motion along the inner circular surface 3 of the pump, and are self-adjusted along with the rotating process, the blade body 1 and the pump body 4 are not in direct contact, namely the state of rolling contact between the balancing flexible combined blade 8 and the inner circular surface 3 of the pump body 4 is always kept, the friction abrasion between the blade body 1 and the pump body 4 is greatly reduced, and the running stability of the balancing flexible combined blade and the rotor pump is improved, and the service life of the rotor pump is prolonged.
The embodiments described in the present specification are merely examples of implementation forms of the inventive concept, and the scope of protection of the present invention should not be construed as being limited to the specific forms set forth in the embodiments, but also equivalent technical means that can be conceived by those skilled in the art according to the inventive concept.
Claims (10)
1. A balanced flexible composite vane, characterized in that: the blade body comprises a divergent arc section at the upper end, a rectangular section at the middle part and a divergent elliptical section at the lower end, and the diameter of the divergent arc section is smaller than the length of the major axis of the divergent elliptical section; the bottom of the blade body is axially provided with a plurality of grooves for installing the rolling support sleeve, and the upper end surface of each groove is an arc surface which is recessed downwards;
the rolling support sleeve comprises a support frame and rollers, the support frame is clamped into the groove and then hinged with the bottom of the blade body, and a gap is reserved between the highest point of the upper end of the support frame and the lowest point of the arc-shaped surface; the bottom of the support frame is provided with a roller which is used for being pressed on the inner circular surface of the inner cavity of the pump body and rolling along the inner circular surface.
2. A balanced flexible composite vane according to claim 1 wherein: the support frame is non-isosceles triangle-like structure, and wherein the top contained angle of support frame is the obtuse angle, and the top of support frame is equipped with the shaft hole that supplies the support axle to run through, and the bottom installation can be followed the rolling gyro wheel of pump body inner circle face.
3. A balanced flexible composite vane according to claim 2 wherein: the bottom contained angle department of support frame respectively is equipped with a gyro wheel groove that is used for installing the gyro wheel to be equipped with the gyro wheel of installing on the support frame through the riveting mode in the gyro wheel groove, and gyro wheel and the interior round surface of pump body inner chamber tangent contact all the time, and guarantee to leave the clearance between support frame bottom and the face of cylinder.
4. A balanced flexible composite vane according to claim 3 wherein: the axial front end and the axial rear end of the bottom of the blade body are respectively provided with a groove for installing a rolling support sleeve, a through hole for a bracket shaft to penetrate is arranged between the outer side end surface of the groove and the blade body end surface on the same side, and a blind hole coaxial with the through hole on the same side is arranged on the inner side end surface of the groove; the inner end of the bracket shaft sequentially penetrates through the through hole and the shaft hole and then is inserted into the blind hole, so that the hinge joint of the bracket shaft and the blade body is realized; the support shaft is connected with the blade body through a locating pin and used for realizing the axial locating of the support shaft.
5. A rotor pump constructed using the balanced flexible composite vane according to any one of claims 1 to 4 wherein: the device comprises a pump body, a main shaft, a flexible rotor and balanced flexible combined blades, wherein a fluid inlet is arranged on the side surface of the pump body, a fluid outlet is arranged on the top of the pump body, and the fluid inlet and the fluid outlet are communicated with a cylindrical inner cavity of the pump body; the inner end of the main shaft extends into the cylindrical inner cavity from the eccentric hole of the pump body, and the outer end of the main shaft falls outside the pump body and is connected with external driving equipment; the flexible rotor is coaxially sleeved at the inner end part of the main shaft, and the flexible rotor and the main shaft are connected through keys; the flexible rotor is provided with a plurality of blade grooves which are used for installing balanced flexible combined blades and have the same rotation direction along the circumferential direction; the blade groove is joggled with the upper part of the blade body of the balance type flexible combined blade inserted into the blade groove; the support frame of the rolling support sleeve group is arranged in a mode that the front part is long and the rear part is short along the rotation direction, the roller is in contact with the inner circular surface of the inner cavity of the pump body and rolls along the circumferential direction of the inner circular surface all the time, gaps are reserved between the outer contour of the gradually-expanding elliptical section of the blade body and the bottom end of the support frame of the rolling support sleeve group and the inner circular surface all the time, one side of the support frame, which pushes the fluid medium to rotate towards the direction of the fluid outlet, is defined as the front part, and one side opposite to the front part of the support frame is defined as the rear part.
6. The rotor pump as set forth in claim 5, wherein: the main shaft is axially arranged along the inner cavity of the pump body, and the main shaft is offset to the direction of the fluid outlet above the pump body, namely, the main shaft central shaft and the central shaft of the inner cavity of the pump body are arranged right above the central shaft of the cylindrical inner cavity of the pump body while the central shaft of the main shaft and the central shaft of the inner cavity of the pump body are in a coplanar plane.
7. The rotor pump as set forth in claim 6, wherein: the axial length of the balance type flexible combined blade is consistent with that of the cylindrical inner cavity.
8. The rotor pump as set forth in claim 7, wherein: the flexible rotor is uniformly provided with 4-8 blade grooves along the circumferential direction, the notch direction of the blade grooves is consistent with the rotation direction of the flexible rotor, the radial included angle of the blade grooves is 20-40 degrees, and the radial included angle of the blade grooves is defined as the included angle between the longitudinal symmetry axis of the blade grooves and the radius of the flexible rotor intersecting with the longitudinal symmetry axis.
9. The rotor pump as set forth in claim 8, wherein: a transition fillet is arranged on the outer side of the front groove side of the blade groove.
10. The rotor pump as set forth in claim 9, wherein: the profile of the blade groove is consistent with the upper outer profile of the blade body.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811009344.3A CN109026680B (en) | 2018-08-31 | 2018-08-31 | Balanced type flexible combined blade and rotor pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811009344.3A CN109026680B (en) | 2018-08-31 | 2018-08-31 | Balanced type flexible combined blade and rotor pump |
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| Publication Number | Publication Date |
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| CN109026680A CN109026680A (en) | 2018-12-18 |
| CN109026680B true CN109026680B (en) | 2023-10-20 |
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| CN201811009344.3A Active CN109026680B (en) | 2018-08-31 | 2018-08-31 | Balanced type flexible combined blade and rotor pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR102342747B1 (en) * | 2020-01-08 | 2021-12-28 | 동진아이엠테크(주) | Vacuum pump |
| CN112325951B (en) * | 2020-10-21 | 2023-09-01 | 南京深度系统工程有限公司 | Three-rotor pulsation-free positive displacement flowmeter |
| CN113107847A (en) * | 2020-12-25 | 2021-07-13 | 南京工业职业技术大学 | Rotary pendulum driving scraper type compressor and using method thereof |
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| DE875983C (en) * | 1948-12-24 | 1953-05-07 | Hugues Schellenberg | Rotary compressor with swiveling blades |
| FR1128055A (en) * | 1955-06-21 | 1957-01-02 | Creusot Forges Ateliers | Improvements to rotary vane compressors |
| JPS63159687A (en) * | 1986-12-22 | 1988-07-02 | Anretsuto:Kk | Flexible blower pump |
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|---|---|
| CN109026680A (en) | 2018-12-18 |
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