CN111765077A

CN111765077A - Vane pump

Info

Publication number: CN111765077A
Application number: CN202010701280.4A
Authority: CN
Inventors: 陈太文; 陆伟良; 杜帅; 夏志远; 王振宇; 曾富根
Original assignee: Hainan Energy Storing Power Generating Co ltd
Current assignee: Hainan Energy Storing Power Generating Co ltd
Priority date: 2020-07-20
Filing date: 2020-07-20
Publication date: 2020-10-13

Abstract

The invention discloses a vane pump, which comprises a shell, a rotor and vanes; the shell is provided with a medium inlet, a medium outlet and a guide groove, and the guide groove is arranged between the medium inlet and the medium outlet; the rotor is rotatably arranged in the shell and provided with a protruding part which can slide along the inner wall of the shell; the blades can be slidably arranged in the guide grooves and extend into the shell; the rotor and the inner wall of the shell form an inlet volume cavity and an outlet volume cavity on two sides of the blade respectively. The vane of the vane pump does not need to rely on the centrifugal force generated by the rotation of the rotor to generate sealing pressure, and does not generate increased friction force due to the medium pressure caused by the friction force between the vane and the sliding groove of the rotor, and simultaneously, the problem of large vane resistance caused by poor lubricating conditions of the vane pump in the prior art is solved. The vane pump has the characteristics of simple structure, stable operation, small vane friction resistance and the like.

Description

Vane pump

Technical Field

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

Background

The blades of the existing rotor blade pump are all arranged on a rotor, the operation is stable due to the fact that the number of the blades is large, and the double-acting rotor blade pump is stressed uniformly due to symmetrical stress. Because the blade of the vane pump needs to generate sealing pressure by the centrifugal force generated by the rotation of the rotor, and the friction force between the blade and the sliding groove of the rotor is increased by the pressure of a medium, when the vane pump is used as a water pump, the resistance of the blade is large due to poor lubricating conditions.

Disclosure of Invention

Based on this, the invention aims to provide a vane pump which has the characteristics of simple structure, stable operation and small vane friction resistance.

The vane pump comprises a shell, a rotor and vanes;

the shell is provided with a medium inlet, a medium outlet and a guide groove, and the guide groove is arranged between the medium inlet and the medium outlet;

the rotor is rotatably arranged in the shell and provided with a protruding part which can slide along the inner wall of the shell;

the blades can be slidably arranged in the guide grooves and extend into the shell;

the rotor and the inner wall of the shell form an inlet volume cavity and an outlet volume cavity on two sides of the blade respectively.

According to the vane pump, the shell, the rotor and the vanes are arranged, the medium inlet, the medium outlet and the guide groove are formed in the shell, the rotor and the inner wall of the shell are utilized to form the inlet volume cavity and the outlet volume cavity on two sides of the vanes in decibels, when the rotor rotates, the vanes move in the radial direction along the guide groove under the pushing of the rotor, the outlet volume cavity is gradually reduced along with the rotation of the rotor, and the medium is discharged from the medium outlet; similarly, at the medium inlet, the volume of the inlet volume cavity is gradually increased along with the rotation of the rotor, and the medium is sucked into the inlet volume cavity; when the convex part of the rotor rotates to the vane position, the medium inlet and the medium outlet are closed by the rotor; when the convex part of the rotor rotates past the position of the vane, the sucked medium is communicated with the medium outlet, the rotor rotates to discharge the medium from the medium outlet, and the rotor rotates to repeat the process, so that the medium is continuously discharged. The vane of the vane pump does not need to rely on the centrifugal force generated by the rotation of the rotor to generate sealing pressure, and does not generate increased friction force due to the medium pressure caused by the friction force between the vane and the sliding groove of the rotor, and simultaneously, the problem of large vane resistance caused by poor lubricating conditions of the vane pump in the prior art is solved.

In one embodiment of the above technical solution, the cross section of the rotor is a circular triangle, and three corners of the rotor are the protrusions respectively. So set up for rotor stable in structure, it is steady during the rotation, and its three angles form the bulge can play bulldoze the blade motion and make the effect of import volume chamber, export volume chamber volume change.

In one embodiment of the above technical solution, the number of the vanes, the guide grooves, the medium inlets, and the medium outlets is three; the three guide grooves are uniformly distributed on the shell, each blade is arranged in one guide groove in a sliding mode, and the two sides of each guide groove are respectively provided with one medium inlet and one medium outlet. The number of the blades, the number of the guide grooves, the number of the medium inlets and the number of the medium outlets are three, so that medium inlet and outlet channels are increased, and the efficiency of the pump is improved.

In one embodiment, the cross section of the rotor is elliptical, and the protruding parts are located at two ends of the rotor. So set up for rotor stable in structure, it is steady during the rotation, and its both ends form the bulge can play bulldoze the blade motion and make the effect of import volume chamber, export volume chamber volume change.

In one embodiment of the above technical solution, the number of the vanes, the guide groove, the medium inlet, and the medium outlet is two; the two guide grooves are symmetrically arranged on the shell, each blade is slidably arranged in one guide groove, and the two sides of each guide groove are respectively provided with one medium inlet and one medium outlet. The number of the blades, the guide groove, the medium inlet and the medium outlet is two, so that medium inlet and outlet channels are increased, and the efficiency of the pump is improved.

In one embodiment of the above technical solution, the cross section of the rotor is circular, and the protrusion is any arc surface thereof;

the number of the vane, the guide groove, the medium inlet, and the medium outlet is one.

The circular rotor has simple structure and stable rotation, and the bulge formed on any arc surface of the rotor can push the blades to move and change the volumes of the inlet volume cavity and the outlet volume cavity.

In one embodiment of the above technical solution, the vane pump further includes a linear bearing, the linear bearing is disposed outside the guide groove, and the vane is slidably disposed on the linear bearing. The linear bearing may guide the linear movement of the blade and reduce the frictional resistance of the blade.

In one embodiment, the vane pump further includes a sealing member disposed in the guide groove, and the vane passes through the sealing member. The sealing element can seal the blade when the blade moves, and the medium is prevented from flowing out of a gap between the blade and the guide groove.

In an embodiment of the above technical solution, the vane pump further includes a rotating shaft, the rotating shaft is pivoted through a bearing, and the vane is connected to the rotating shaft. Because the rotating shaft is supported by the bearing, the friction resistance is small, and the blade is only subjected to the resistance of the sealing element.

In one embodiment of the above technical solution, the vane pump further includes a connecting rod, one end of the connecting rod is connected to the vane, and the other end of the connecting rod is pivoted to the rotating shaft. So set up, when the rotor rotates, the blade makes the connecting rod can rotate around the pivot under the promotion of rotor.

Compared with the prior art, the vane pump is provided with the shell, the rotor and the vanes, the shell is provided with the medium inlet, the medium outlet and the guide groove, the rotor and the inner wall of the shell are utilized to form the inlet volume cavity and the outlet volume cavity on two sides of the vanes in decibels, when the rotor rotates, the vanes move along the guide groove in the radial direction under the pushing of the rotor, the outlet volume cavity is gradually reduced along with the rotation of the rotor, and the medium is discharged from the medium outlet; similarly, at the medium inlet, the volume of the inlet volume cavity is gradually increased along with the rotation of the rotor, and the medium is sucked into the inlet volume cavity; when the convex part of the rotor rotates to the vane position, the medium inlet and the medium outlet are closed by the rotor; when the convex part of the rotor rotates past the position of the vane, the sucked medium is communicated with the medium outlet, the rotor rotates to discharge the medium from the medium outlet, and the rotor rotates to repeat the process, so that the medium is continuously discharged. The vane of the vane pump does not need to rely on the centrifugal force generated by the rotation of the rotor to generate sealing pressure, and does not generate increased friction force due to the medium pressure caused by the friction force between the vane and the sliding groove of the rotor, and simultaneously, the problem of large vane resistance caused by poor lubricating conditions of the vane pump in the prior art is solved. The vane pump has the characteristics of simple structure, stable operation, small vane friction resistance and the like.

For a better understanding and practice, the invention is described in detail below with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic structural view of a preferred structure of a vane pump according to the first embodiment.

Fig. 2 is a schematic structural view of a preferred structure of the vane pump of the second embodiment.

Fig. 3 is a schematic structural view of a preferred structure of a vane pump according to a third embodiment.

FIG. 4 is a schematic structural view of a preferred structure of a vane pump according to the fourth embodiment.

Detailed Description

The terms of orientation of up, down, left, right, front, back, top, bottom, and the like, referred to or may be referred to in this specification, are defined relative to their configuration, and are relative concepts. Therefore, it may be changed according to different positions and different use states. Therefore, these and other directional terms should not be construed as limiting terms.

The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

Example one

Referring to fig. 1, fig. 1 is a schematic structural diagram of a preferred structure of a vane pump according to a first embodiment.

The vane pump of the present embodiment includes a casing 1, a rotor 2, and vanes 3.

The housing 1 is provided with a medium inlet 11, a medium outlet 12 and a guide groove 13, wherein the guide groove 13 is arranged between the medium inlet 11 and the medium outlet 12.

The rotor 2 is rotatably arranged in the housing 1, the rotor 2 is provided with a convex part 21, and the convex part 21 can slide along the inner wall of the housing 1.

The vanes 3 are slidably disposed in the guide grooves 13 and extend into the housing 1.

The rotor 2 and the inner wall of the shell 1 form an inlet volume cavity and an outlet volume cavity on two sides of the blade 3 respectively.

By arranging the shell 1, the rotor 2 and the blades 3, arranging the medium inlet 11, the medium outlet 12 and the guide groove 13 on the shell 1, forming an inlet volume cavity and an outlet volume cavity on two sides of the blades 3 in decibels by utilizing the inner walls of the rotor 2 and the shell 1, when the rotor 2 rotates, the blades 3 move along the guide groove 13 in the radial direction under the pushing of the rotor 2, the outlet volume cavity is gradually reduced along with the rotation of the rotor 2, and the medium is discharged from the medium outlet 12; similarly, at the medium inlet 11, along with the gradual increase of the volume of the inlet volume cavity along with the rotation of the rotor 2, the medium is sucked into the inlet volume cavity; when the projections 21 of the rotor 2 are rotated to the vane 3 position, the medium inlet 11, the medium outlet 12 are closed by the rotor 2; when the convex part 21 of the rotor 2 rotates to pass through the position of the vane 3, the sucked medium is communicated with the medium outlet 12, the rotor 2 rotates to discharge the medium from the medium outlet 12, and the rotor 2 rotates to repeat the process, so that the medium is continuously discharged. The vane of the vane pump does not need to rely on the centrifugal force generated by the rotation of the rotor to generate sealing pressure, and does not generate increased friction force due to the medium pressure caused by the friction force between the vane and the sliding groove of the rotor, and simultaneously, the problem of large vane resistance caused by poor lubricating conditions of the vane pump in the prior art is solved.

Specifically, the cross section of the housing 1 of the present embodiment is circular. The cross section of the rotor 2 is an arc triangle, and three corners of the rotor are the convex parts 21 respectively. Each of the projections 21 is in contact with the inner wall of the housing 1 with a small clearance.

So set up for rotor 2 stable in structure, it is steady during the rotation, and its three angles form bulge 21 can play bulldoze the motion of blade 3 and make the effect of inlet volume chamber, outlet volume chamber volume change, thereby inhale or discharge medium.

Preferably, the number of the vane 3, the guide groove 13, the medium inlet 11, and the medium outlet 12 is three; the three guide grooves 13 are uniformly distributed on the housing 1, each blade 3 is slidably arranged in one guide groove 13, and the two sides of each guide groove 13 are respectively provided with one medium inlet 11 and one medium outlet 12. The three vanes 3, the three guide grooves 13, the three medium inlets 11 and the three medium outlets 12 are arranged, so that medium inlet and outlet passages are increased, and the efficiency of the pump is improved.

In addition, since the vane 3 is mounted on the housing 1, the movement of the vane 3 can be controlled, and the frictional resistance between the vane 3 and the guide groove 13 can be reduced.

Preferably, the vane pump further includes a linear bearing 4, the linear bearing 4 is disposed outside the guide groove 13, and the vane 3 is slidably disposed on the linear bearing 4. The linear bearing 4 can guide the linear movement of the vane 3 and reduce the frictional resistance of the vane 3.

Further, the vane pump further comprises a sealing member 5, the sealing member 5 is disposed in the guide groove 13, and the vane 3 passes through the sealing member 5. The sealing element 5 can seal the blade 3 when the blade 3 moves, and prevents the medium from flowing out from the gap between the blade 3 and the guide groove 13.

Example two

Referring to fig. 2, fig. 2 is a schematic structural diagram of a preferred structure of a vane pump according to a second embodiment.

The vane pump of this embodiment has substantially the same structure as the vane pump of the first embodiment, except that the vane pump of this embodiment further includes a rotating shaft 6, the rotating shaft 6 is pivoted through a bearing, and the vane 3 is connected to the rotating shaft 6. Since the rotating shaft 6 is supported by bearings, the frictional resistance is small, and the blade 3 is only subjected to the resistance of the seal 5.

Further, the vane pump further comprises a connecting rod 7, one end of the connecting rod 7 is connected with the vane 3, and the other end of the connecting rod is pivoted on the rotating shaft 6. The arrangement is such that when the rotor 2 rotates, the blade 3 can make the connecting rod 7 rotate around the rotating shaft 6 under the pushing of the rotor 2.

EXAMPLE III

Referring to fig. 3, fig. 3 is a schematic structural diagram of a preferred structure of a vane pump according to a third embodiment.

The vane pump of this embodiment has substantially the same structure as the vane pump of the second embodiment, except that the cross section of the rotor 2 of this embodiment is elliptical, and the projections 21 are located at both ends thereof. So set up for rotor 2 stable in structure, it is steady during the rotation, and its both ends form bulge 21 can play bulldoze 3 motion of blade and messenger the effect of import volume chamber, export volume chamber volume change.

In addition, the number of the vanes 3, the guide grooves 13, the medium inlets 11, and the medium outlets 12 is two; the two guide grooves 13 are symmetrically arranged on the housing 1, each blade 3 is slidably arranged in one guide groove 13, and the two sides of each guide groove 13 are respectively provided with one medium inlet 11 and one medium outlet 12. The number of the vanes 3, the guide grooves 13, the medium inlets 11 and the medium outlets 12 is two, so that medium inlet and outlet passages are increased, and the efficiency of the pump is improved.

Example four

Referring to fig. 4, fig. 4 is a schematic structural diagram of a preferred structure of a vane pump according to a fourth embodiment.

The vane pump of the present embodiment has substantially the same structure as the vane pump of the second embodiment, except that the cross section of the rotor 2 of the present embodiment is circular, and the convex portion 21 is any arc-shaped surface thereof.

The vane 3, the guide groove 13, the medium inlet 11 and the medium outlet 12 are all one.

The circular rotor 2 is simple in structure and stable in rotation, and the protruding portion 21 formed on any arc surface of the rotor can play a role in pushing and pressing the blade 3 to move and enabling the volume of the inlet volume cavity and the outlet volume cavity to change.

The vane pump of the invention can be widely applied as a medium pump with simple structure, and can be used as a water pump, an air pump, an oil pump and the like. In addition, the vane 3 of the vane pump of the present invention is mounted on the stator so as not to rotate, and it is easy to control the movement of the vane 3 in various ways.

Compared with the prior art, the vane pump is provided with the shell 1, the rotor 2 and the vanes 3, the shell 1 is provided with the medium inlet 11, the medium outlet 12 and the guide groove 13, the rotor 2 and the inner wall of the shell 1 are utilized to form the inlet volume cavity and the outlet volume cavity on two sides of the vanes 3 in decibels, when the rotor 2 rotates, the vanes 3 move along the guide groove 13 in the radial direction under the pushing of the rotor 2, the outlet volume cavity is gradually reduced along with the rotation of the rotor 2, and the medium is discharged from the medium outlet 12; similarly, at the medium inlet 11, along with the gradual increase of the volume of the inlet volume cavity along with the rotation of the rotor 2, the medium is sucked into the inlet volume cavity; when the projections 21 of the rotor 2 are rotated to the vane 3 position, the medium inlet 11, the medium outlet 12 are closed by the rotor 2; when the convex part 21 of the rotor 2 rotates to pass through the position of the vane 3, the sucked medium is communicated with the medium outlet 12, the rotor 2 rotates to discharge the medium from the medium outlet 12, and the rotor 2 rotates to repeat the process, so that the medium is continuously discharged. The vane 3 of the vane pump does not need to rely on the centrifugal force generated by the rotation of the rotor 2 to generate sealing pressure, and does not generate increased friction force due to the medium pressure caused by the friction force between the vane and the sliding groove of the rotor, and simultaneously, the problem of large vane resistance caused by poor lubricating conditions of the vane pump in the prior art is solved. The vane pump has the characteristics of simple structure, stable operation, small vane friction resistance and the like.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.

Claims

1. A vane pump characterized by: comprises a shell, a rotor and a blade;

2. The vane pump of claim 1 wherein: the cross section of the rotor is in the shape of an arc triangle, and three corners of the rotor are the protruding parts respectively.

3. The vane pump of claim 2 wherein: the number of the blades, the guide grooves, the medium inlets and the medium outlets are three; the three guide grooves are uniformly distributed on the shell, each blade is arranged in one guide groove in a sliding mode, and the two sides of each guide groove are respectively provided with one medium inlet and one medium outlet.

4. The vane pump of claim 1 wherein: the cross section of the rotor is oval, and the protruding parts are located at two ends of the rotor.

5. The vane pump of claim 4 wherein: the number of the vanes, the guide groove, the medium inlet and the medium outlet is two; the two guide grooves are symmetrically arranged on the shell, each blade is slidably arranged in one guide groove, and the two sides of each guide groove are respectively provided with one medium inlet and one medium outlet.

6. The vane pump of claim 1 wherein: the cross section of the rotor is circular, and the convex part is any arc surface of the rotor;

7. A vane pump as claimed in any one of claims 1 to 6 wherein: the vane pump further comprises a linear bearing, the linear bearing is arranged on the outer side of the guide groove, and the vanes are slidably arranged on the linear bearing.

8. A vane pump as claimed in any one of claims 1 to 6 wherein: the vane pump further includes a sealing member disposed in the guide groove, and the vane passes through the sealing member.

9. A vane pump as claimed in any one of claims 1 to 6 wherein: the vane pump further comprises a rotating shaft, the rotating shaft is pivoted through a bearing, and the vanes are connected with the rotating shaft.

10. The vane pump of claim 9 wherein: the vane pump also comprises a connecting rod, one end of the connecting rod is connected with the vane, and the other end of the connecting rod is pivoted on the rotating shaft.