CN113915123A

CN113915123A - Sliding vane pump

Info

Publication number: CN113915123A
Application number: CN202111238012.4A
Authority: CN
Inventors: 吴俊辰; 谢国华; 高江平
Original assignee: Weilong Pump Co ltd
Current assignee: Weilong Pump Co ltd
Priority date: 2021-10-25
Filing date: 2021-10-25
Publication date: 2022-01-11
Anticipated expiration: 2041-10-25
Also published as: CN113915123B

Abstract

The invention relates to the technical field of mechanical equipment, in particular to a sliding vane pump which comprises a rotor, a stator and a sliding vane group, wherein the rotor is eccentrically and rotatably arranged in the stator which is fixedly arranged; the groups of the sliding vane groups are equidistantly arranged on the circumference of the rotor, the sliding vane groups are all arranged in the stator, and when the sliding vane groups rotate along with the rotor, the end parts of the sliding vane groups, which are positioned outside the rotor, are always in contact with the inner cavity arm of the stator; the rotor is provided with a movable cavity for accommodating the movable arrangement of the slide vane group; the end part of the sliding plate group, which is positioned in the movable cavity, is provided with a piston part which is arranged in an extending and contracting way, when the sliding plate group rotates along with the rotor, the piston part is unfolded and combined with the movable cavity to form a piston mechanism, so that the sliding plate group obtains the centrifugal force and the air pressure supporting force of the piston mechanism in the rotating process of the rotor, and the technical problem that the sealing between the sliding plate group and the stator is incomplete only depending on the centrifugal force is solved.

Description

Sliding vane pump

Technical Field

The invention relates to the technical field of mechanical equipment, in particular to a sliding vane pump.

Background

The sliding vane pump is also called vane pump, scraping vane pump and scraping vane pump, and is composed of pump body, inner rotor, stator, pump cover and sliding vane. The working principle is that the sliding vanes cling to the eccentric stator by means of centrifugal force, so that mutually isolated volume cavities are formed between every two adjacent sliding vanes, the rotor and the pump body, the volume of the volume cavity at an inlet is increased, and liquid suction is performed; the volume of the volume cavity at the outlet is reduced, and liquid drainage is carried out. The sliding vane pump has the advantages of strong self-absorption capacity, high efficiency, good sealing performance and the like.

However, the gleitbretter of current gleitbretter pump is under long-time work, and wearing and tearing can appear in the gleitbretter, lead to the life decline of gleitbretter, and in addition, the gleitbretter only relies on centrifugal force to hug closely with eccentric stator and contradicts, can lead to the sealed incomplete between gleitbretter and the eccentric stator, the incomplete condition of flowing back appears.

Chinese patent application No. CN201910959166.9 discloses a sliding vane pump with circular arc sliding vane structure. The sliding vane pump with the arc-shaped sliding vane structure comprises a front end cover, a rear end cover, a front bearing, a rear bearing, a pump body, an eccentric stator cylinder sleeve, a rotor stepped shaft and first to fourth arc-shaped sliding vanes.

However, in the above-mentioned technical solutions, the sliding vane still has the problem of wear after long-time operation and the problem of incomplete sealing with the eccentric stator.

Disclosure of Invention

In order to solve the problems, the invention provides a sliding vane pump, wherein a movable cavity is arranged on a rotor and is matched with a piston part arranged at the bottom of a sliding vane group to form a piston mechanism, so that the sliding vane group obtains centrifugal force and air pressure supporting force of the piston mechanism in the rotating process of the rotor, and the technical problem that the sealing between the sliding vane group and a stator is incomplete only by the centrifugal force is solved.

In order to achieve the purpose, the invention provides the following technical scheme:

a sliding vane pump comprises a rotor, a stator and a sliding vane group, wherein the rotor is eccentrically and rotatably arranged in the stator which is fixedly arranged;

the plurality of groups of the slide sheet groups are equidistantly arranged on the circumference of the rotor, the slide sheet groups are all arranged in the stator, and when the slide sheet groups rotate along with the rotor, the end parts of the slide sheet groups, which are positioned outside the rotor, are always in contact with the inner cavity arm of the stator;

the rotor is provided with a movable cavity for accommodating the movable arrangement of the slide plate group;

the end part of the sliding plate group, which is positioned in the movable cavity, is provided with a piston part which is arranged in an extending and contracting way, and when the sliding plate group rotates along with the rotor, the piston part is unfolded and combined with the movable cavity to form a piston mechanism to support the sliding plate group in rotation.

As an improvement, the rotor is inserted with lubricant storage tubes which are communicated with the movable cavities in a one-to-one correspondence manner, and when the piston mechanism works, the lubricant in the lubricant storage tubes is sucked out and flows into the movable cavities to lubricate the side walls of the sliding plate groups.

As an improvement, the movable cavity comprises a piston chamber arranged close to the central axis of the rotor and a lubricating chamber arranged far away from the central axis of the rotor, the piston part is positioned in the piston chamber, and the lubricating chamber is communicated with the lubricant storage pipe.

As the improvement, the lubricant storage tube comprises a hollow tube body, lubricant is stored in the tube body, a liquid outlet is formed in the circumferential side wall, facing the movable cavity, of one side of the tube body, sponge is arranged at the position of the liquid outlet, and a liquid feeding hole is formed in one axial end of the tube body.

As an improvement, the bottoms of the movable cavities close to the central axis of the rotor are communicated with each other through communication holes.

As an improvement, the piston part comprises piston sheets which are symmetrically arranged;

and an elastic part for driving the piston plates to contract is arranged between the piston plates.

As an improvement, the slide sheet group comprises side plates symmetrically arranged at two sides and slide sheets positioned between the side plates;

the two groups of side plates are integrally linked through a threaded piece;

the slip sheet is movably arranged between the side plates, a waist hole for the threaded piece to pass through is formed in the slip sheet, and the slip sheet and the side plates form dislocation displacement through the waist hole.

As an improvement, when the sliding vane group is abutted against the inner wall of the stator along with the rotation of the rotor, the threaded part is compressed, the sliding vane is contracted towards the central axis of the rotor, and the piston sheet is extruded to extend and open towards two sides.

As an improvement, the piston plates are hung on the corresponding side plates through screws, and waist-shaped grooves for the screws to penetrate are formed in the piston plates;

the piston sheet is provided with a bottom plate opposite to the other side of the side plate, and an arc-shaped groove for accommodating the sliding sheet is formed in the bottom plate.

As an improvement, the method further comprises the following steps:

an electric drive assembly 4 and a manual drive assembly 5 for driving the rotor to rotate, respectively.

The invention has the beneficial effects that:

(1) according to the invention, the movable cavity is arranged on the rotor and matched with the piston part arranged at the bottom of the slide plate group to form the piston mechanism, so that the slide plate group obtains centrifugal force and also has air pressure supporting force of the manual piston mechanism in the rotating process of the rotor, and the technical problem that the sealing between the slide plate group and the stator is incomplete only depending on the centrifugal force is solved;

(2) according to the invention, the lubricant storage tube is arranged on the rotor, in the process of rotating the rotor, the piston mechanism sucks the lubricant in the lubricant storage tube out of the movable cavity, and the lubricant is diffused on the side wall of the slide plate group in the movable cavity, so that the side wall of the slide plate group is lubricated;

(3) according to the invention, the movable cavity is provided with the piston chamber and the lubricating chamber, so that even if the movable mechanism retracts air pressure into the lubricant storage pipe, part of the space is still filled with lubricant liquid drops, the side wall of the slide plate group can be lubricated, the abrasion of the slide plate group is reduced, and the service life is prolonged;

(4) according to the invention, the sliding sheet group is provided with the side plate and the sliding sheet, so that when the sliding sheet is abutted against the stator under the action of centrifugal force, the sliding sheet is pressed down at a certain distance, the piston sheet of the piston group is extended to form a piston mechanism, and when the sliding sheet group cloth rotates, the sliding sheet group cloth can automatically contract, and cannot be in a gas compression state all the time, so that the service life is longer.

In conclusion, the sliding vane pump has the advantages of good sealing performance, strong self-suction capability, long service life and the like, and is particularly suitable for the technical field of sliding vane pump structures.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a first schematic view of a front view structure of the present invention;

FIG. 3 is a second schematic front view of the present invention;

FIG. 4 is a schematic view of the front view structure of the rotor of the present invention

FIG. 5 is a schematic view of the structure at A in FIG. 4;

FIG. 6 is a perspective view of a lubricant storage tube according to the present invention;

FIG. 7 is a schematic cross-sectional view of a lubricant storage tube according to the present invention;

FIG. 8 is a schematic perspective view of a slide plate set according to the present invention;

FIG. 9 is a first schematic sectional view of a slide plate set according to the present invention;

FIG. 10 is a schematic cross-sectional view of a slide plate set according to the present invention;

FIG. 11 is a partial schematic view of a piston plate according to the present invention;

FIG. 12 is a schematic perspective view of a vane pump according to the present invention;

FIG. 13 is a schematic cross-sectional view of a sliding vane pump according to the present invention;

FIG. 14 is a schematic view of a partial structure of a sliding vane pump according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Example one

As shown in fig. 1 to 14, a sliding vane pump includes a rotor 1, a stator 2 and a sliding vane set 3, wherein the rotor 1 is eccentrically and rotatably installed in the stator 2;

the plurality of groups of the slide plate groups 3 are equidistantly arranged on the circumference of the rotor 1, the slide plate groups 3 are all arranged in the stator 2, and when the slide plate groups 3 rotate along with the rotor 1, the end parts of the slide plate groups 3 positioned outside the rotor 1 are always abutted against the inner cavity arm of the stator 2;

the rotor 1 is provided with a movable cavity 11 for accommodating the movable arrangement of the slide plate group 3;

the end part of the sliding plate group 3 located in the movable cavity 11 is provided with a piston part 31 which is extended and contracted, when the sliding plate group 3 rotates along with the rotor 1, the piston part 31 is unfolded and combined with the movable cavity 11 to form a piston mechanism 10, and the sliding plate group 3 in rotation is supported.

Furthermore, a lubricant storage tube 12 communicated with the movable cavity 11 in a one-to-one correspondence manner is inserted into the rotor 1, and when the piston mechanism 10 works, the lubricant in the lubricant storage tube 12 is sucked out and flows into the movable cavity 11 to lubricate the side wall of the slide sheet group 3.

Furthermore, the movable cavity 11 includes a piston chamber 111 disposed near the central axis of the rotor 1 and a lubrication chamber 112 disposed far from the central axis of the rotor 1, the piston portion 31 is located in the piston chamber 111, and the lubrication chamber 112 is communicated with the lubricant storage tube 12.

In addition, the lubricant storage tube 12 includes a hollow tube 121, lubricant is stored in the tube 121, a liquid outlet 122 is formed in a circumferential side wall of one side of the tube 121 facing the movable cavity 11, a sponge 123 is disposed at the liquid outlet 122, and a liquid adding hole 124 is formed at one axial end of the tube 121.

Wherein, preferably, the bottoms of the active cavities 11 near the central axis of the rotor 1 are communicated with each other through a communication hole 113.

It should be noted that, in the process that the rotor 1 rotates in the stator 2, the slide plate group 3 rotates along with the rotor 1, and is abutted and sealed with the inner cavity wall of the stator 2 by the action of centrifugal force, and in the process that the slide plate group 3 rotates, and in the process that the slide plate group 3 is movably adjusted along the arc-shaped curve of the inner cavity wall of the stator 2, the piston part 31 installed on the slide plate group 3 is unfolded to cooperate with the movable cavity 11 on the rotor 1 to form the piston mechanism 10, and in the process that the slide plate group 3 is movably adjusted, the piston mechanism 10 generates supporting force on the slide plate group 3 along with the movement of the slide plate group 3, and packs the abutting and sealing of the slide plate group 3 and the inner cavity wall of the stator 2.

Specifically, during the rotation of the rotor 1, the sliding plate sets 3 collide with the inner wall of the stator 2 under the view of centrifugal force, and at the same time, the piston portions 31 of the sliding plate sets 3 expand, because all the sliding plate sets 3 are in collision sealing with the inner cavity wall of the stator at this time, the piston mechanisms 10 formed by the expanded piston portions 31 just support the sliding plate sets 3, and the movable cavities 11 in the piston mechanisms 10 are just communicated with each other through the communication holes 113, so that the air pressure between the piston mechanisms 10 is in a communicated and conserved state, the communication means that the air between the piston mechanisms 10 is communicated and flows, and the conservation means that the sliding plate sets 3 in one group bulge outwards during the movement of the sliding plate sets 3, and the sliding plate sets 3 in the other group contract inwards, so that the air pressure at the piston mechanisms 10 is in a conserved state, and just supports the sliding plate sets 3, once the sliding sheet group 3 has the possibility of being separated from the interference seal with the inner cavity wall of the stator 2, the air pressure at the position of the piston mechanism 10 is strongly supported, and the sealing performance is ensured.

It should be further noted that, the sliding plate set 3 moves on the rotor 1, that is, there is a certain gap between the sliding plate set 3 and the rotor 1, so that when the sliding plate set 3 protrudes outward, the piston portion 31 moves outward smoothly, and under the condition that the sliding plate set 3 is always in contact with the inner wall of the stator 2, the piston mechanisms 10 are communicated with each other, so that when the sliding plate set 3 contracts inward, the piston portion 31 can also contract inward smoothly, and no unnecessary support occurs due to the piston mechanisms 10.

In addition, even if there is a movable gap between the slide group 3 and the rotor during the process that the piston portion 31 of the slide group 3 moves with the slide group 3, when the piston portion 31 contracts inward, the lubricant in the lubricant storage tube 12 is sucked out by the instantaneous pressure difference and spreads in the movable cavity 11 to lubricate the side wall of the slide group 3.

It is further described that a sponge 123 is disposed at the liquid outlet 122 of the lubricant storage tube 12, and a large amount of lubricant is absorbed by the sponge 123, and then when the piston portion 31 is contracted inward, the lubricant is sucked out and flows into the movable chamber 11.

Preferably, the piston portion 31 includes symmetrically arranged piston plates 311;

an elastic member 312 for driving the piston plate 311 to contract is disposed between the piston plates 311.

In addition, the slide sheet group 3 comprises side plates 32 symmetrically arranged at two sides and slide sheets 33 positioned between the side plates 32;

the two groups of side plates 32 are integrally linked through a screw 321;

the sliding piece 33 is movably arranged between the side plates 32, a waist hole 331 for the threaded piece 321 to pass through is arranged on the sliding piece 33, and the waist hole 331 is used for the sliding piece 33 and the side plates 32 to form a dislocation displacement.

Further, when the sliding vane group 3 rotates along with the rotor 1 and collides with the inner wall of the stator 2, the screw member 321 is compressed, the sliding vane 33 contracts towards the central axis of the rotor 1, and the piston sheet 311 is extruded to extend and open towards two sides.

Furthermore, the piston sheet 311 is hung on the corresponding side plate 32 through a screw 313, and a waist-shaped groove 322 for the screw 313 to pass through is formed on the piston sheet 311;

the other side of the piston sheet 311 facing the side plate 32 is provided with a bottom plate 323, and the bottom plate 323 is provided with an arc-shaped groove 324 for accommodating the sliding sheet 33.

It should be noted that, in the process that the sliding vane set 3 rotates along with the rotor 1, the sliding vane 33 first abuts against the inner wall of the stator 2, so that the sliding vane 33 and the side plate 32 are dislocated, the sliding vane 33 is inserted between the piston pieces 311, and the piston pieces 311 are extended and opened towards both sides, so that the piston pieces 311 form the piston portion 31, and when the sliding vane set 3 abuts against and seals against the inner wall of the stator 2, the piston portion 31 is also extended to form the piston mechanism 10 with the movable cavity 11, and the actions are tightly connected and do not interfere with each other.

In addition, current sliding vane pump, stator 2 eccentric settings, when stator 2 eccentric distance changes, sliding vane group 3 and stator 2's conflict sealed leakproofness can change along with stator 2's eccentric change, the sealed condition that weakens appears takes place, but the sliding vane pump of this application, when stator 2's eccentric changes, sliding vane group 3 still can be through piston mechanism 10's setting, keeps sliding vane group and stator 2's conflict sealing characteristic.

Further, an electric drive unit 4 and a manual drive unit 5 are provided for driving the rotor 1 to rotate, respectively.

It should be noted that the electric driving assembly 4 for driving the rotor 1 to rotate is preferably an explosion-proof motor, and the manual driving assembly 5 can drive the rotor 1 to rotate in a manual driving manner when the explosion-proof motor fails or is in a state of being unable to be powered on.

Further illustrated, the manual drive assembly 5 comprises the following components: the manual driving assembly 5 is started, the clutch 53 connects the gear box 52 and the rotor 1, and when the manual driving assembly 5 is not started, the clutch 53 is disconnected from the connection between the gear box 52 and the rotor 1.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a sliding vane pump, includes rotor (1), stator (2) and sliding vane group (3), its characterized in that:

the rotor (1) is eccentrically and rotatably arranged in the stator (2) which is fixedly arranged;

the groups of the sliding vane groups (3) are equidistantly arranged on the circumference of the rotor (1), the sliding vane groups (3) are all arranged in the stator (2), and when the sliding vane groups (3) rotate along with the rotor (1), the end parts of the sliding vane groups (3) outside the rotor (1) are always in abutting joint with the inner cavity arm of the stator (2);

the rotor (1) is provided with a movable cavity (11) which contains the sliding vane group (3) and is movably arranged;

the sliding plate group (3) is located the end of the movable cavity (11) is provided with a piston part (31) which is extended and contracted, the sliding plate group (3) follows the rotor (1) to rotate, the piston part (31) is unfolded and combined with the movable cavity (11) to form a piston mechanism (10), and the sliding plate group (3) is supported in the rotation.

2. A sliding vane pump as claimed in claim 1, wherein:

the lubricant storage pipes (12) which are communicated with the movable cavities (11) in a one-to-one correspondence mode are inserted into the rotor (1), and when the piston mechanism (10) works, the lubricant in the lubricant storage pipes (12) is sucked out and flows into the movable cavities (11) to lubricate the side walls of the sliding plate groups (3).

3. A sliding vane pump as claimed in claim 2, wherein:

the movable cavity (11) comprises a piston chamber (111) close to the central axis of the rotor (1) and a lubricating chamber (112) far away from the central axis of the rotor (1), the piston part (31) is located in the piston chamber (111), and the lubricating chamber (112) is communicated with the lubricant storage pipe (12).

4. A sliding vane pump as claimed in claim 2, wherein:

the lubricant storage tube (12) comprises a hollow tube body (121), lubricant is stored in the tube body (121), a liquid outlet (122) is formed in the circumferential side wall, facing the movable cavity (11), of one side of the tube body (121), sponge (123) is arranged at the position of the liquid outlet (122), and a liquid adding hole (124) is formed in one axial end of the tube body (121).

5. A sliding vane pump as claimed in claim 1, wherein:

the bottoms of the movable cavities (11) close to the central axis of the rotor (1) are communicated with each other through communicating holes (113).

6. A sliding vane pump as claimed in claim 1, wherein:

the piston part (31) comprises piston sheets (311) which are symmetrically arranged;

an elastic piece (312) for driving the piston piece (311) to contract is arranged between the piston pieces (311).

7. A sliding vane pump according to claim 6, characterized in that:

the slide sheet group (3) comprises side plates (32) symmetrically arranged at two sides and slide sheets (33) positioned between the side plates (32);

the two groups of side plates (32) are integrally linked through a screw (321);

the sliding sheet (33) is movably arranged between the side plates (32), a waist hole (331) for the threaded piece (321) to pass through is formed in the sliding sheet (33), and the sliding sheet (33) and the side plates (32) form dislocation displacement through the waist hole (331).

8. A sliding vane pump as claimed in claim 7, wherein:

the sliding vane group (3) is connected with the rotor (1) in a rotating mode and is abutted against the inner wall of the stator (2), the threaded piece (321) is compressed, the sliding vane (33) faces to the central axis of the rotor (1) to be contracted, and the piston sheet (311) is extruded to be opened by extending towards two sides.

9. A sliding vane pump as claimed in claim 7, wherein:

the piston sheet (311) is hung on the corresponding side plate (32) through a screw (313), and a waist-shaped groove (322) for the screw (313) to pass through is formed in the piston sheet (311);

the other side of the piston sheet (311) opposite to the side plate (32) is provided with a bottom plate (323), and the bottom plate (323) is provided with an arc-shaped groove (324) for accommodating the sliding sheet (33).

10. A sliding vane pump as claimed in claim 1, further comprising:

an electric drive assembly (4) and a manual drive assembly (5) for driving the rotor (1) to rotate, respectively.