CN115807769A - Cylindrical cam vane pump - Google Patents
Cylindrical cam vane pump Download PDFInfo
- Publication number
- CN115807769A CN115807769A CN202211588189.1A CN202211588189A CN115807769A CN 115807769 A CN115807769 A CN 115807769A CN 202211588189 A CN202211588189 A CN 202211588189A CN 115807769 A CN115807769 A CN 115807769A
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- cylindrical cam
- rotor
- pump
- curved surface
- vane pump
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Abstract
An object of the present invention is to provide a vane pump in which a rotor and a cylindrical cam concentrically operate, so that the pump operates more stably, and the vanes move according to a curved surface of a spring and the cylindrical cam, thereby reducing noise and vibration during operation.
Description
Technical Field
The invention discloses a cylindrical cam vane pump, which is a fluid machine and belongs to a positive displacement vane pump.
Background
The invention has compact structure, small volume, stable operation, uniform output flow, low noise and long service life. The rotor is used as a rotating part, the cylindrical cam is a core part of the invention, a structure that the rotor rotates concentrically but is not eccentric is adopted for more effectively reducing noise and vibration during the operation process of the pump, and the noise transmitted by the pump is lower than that of an eccentric vane pump during the operation.
Disclosure of Invention
An object of the present invention is to provide a vane pump in which a rotor and a cylindrical cam concentrically operate, so that the pump operates more stably, and the vanes move according to a curved surface of a spring and the cylindrical cam, thereby reducing noise and vibration during operation.
The invention consists of a plurality of components, mainly cylindrical cams, concentric stators, rotors, springs, blades, all of which are placed in a housing. The operating principle of the device is that the rotor is driven by external force (motor, engine, crank, belt, etc.) to rotate. When the rotor rotates, the blades rotate integrally with the rotor, the blades in the rotor grooves move along the curved surface of the cylindrical cam under the action of the spring, the front ends of the blades contact the curved surface of the cylindrical cam to work while the blades rotate to form the change of the inner volume of the pump, and fluid is conveyed from the inlet of the pump to the outlet of the pump through the change of the volume.
The vane pump of the present invention can operate at lower rotational speeds because of the use of spring force to drive the vanes rather than relying on centrifugal force. And due to the structure of concentric rotation, the rotor of the invention can change the inlet and the outlet by positive and negative rotation at will.
In order to solve the structure of concentric rotation, the technical scheme of the invention about the cylindrical cam is as follows: the processing of the curved surface of the cylindrical cam is similar to a sine wave, so that the blades can stably slide on the curved surface, and the concentric stator fixes the position of the rotor. The hole of spring is placed to the blade groove area of rotor, and the during operation lets the spring exert force on the blade to keep blade front end contact cylindrical cam curved surface all the time, and at rotatory in-process, because cylindrical cam's curved surface changes and the force that the spring exerted, thereby it forms the change of pump inner volume with cylindrical cam to let the blade can slide at rotatory in-process and in the rotor inslot.
Drawings
FIG. 1 is an overall three-dimensional structural view of a cylindrical cam vane pump;
FIG. 2 is an internal structural view of a cylindrical cam vane pump;
FIG. 3 is a side view of a cylindrical cam vane pump rotor blade and a cylindrical cam;
fig. 4 is a sectional view of the rotor 5 of the pressure ring 2 and the cylindrical cam 7 of the pump housing 6;
FIG. 5 is another processing method of the cylindrical cam (making guide grooves on both sides of the cam);
description of the reference numerals
Fig. 1 is an overall three-dimensional structural view of a cylindrical cam vane pump according to an embodiment of the present application:
the rotor comprises a cover plate 1, a pressing ring 2, a spring 3, a blade 4, a rotor 5, a pump shell 6, a cylindrical cam 7 and a concentric stator 8.
Throughout the drawings, reference is not made to the fasteners and seals that are actually required.
Detailed Description
In order to make the technical scheme of the invention clearer, the invention is further explained by combining the attached drawings, and the invention is specifically realized according to the following steps:
the pump shell 6 is provided with a through hole type inner cavity structure, and the outer wall of the inner cavity structure of the pump shell 6 is provided with an inlet and an outlet which are communicated.
The cylindrical cam 7 is fixedly arranged in the inner cavity of the pump shell 6, and the concentric stator 8 is fixedly arranged at a central through hole of the cylindrical cam 7, as shown in fig. 4.
The outer circle of the rotor 5 and the pump shell 6 and the inner circle of the rotor and the concentric stator 8 are concentrically assembled, and the center line of the rotor is equally divided into a blade 4 groove and a spring 3 hole.
The middle of the rear end of the blade 4 is provided with a groove of the spring 3, when the blade is arranged in the groove of the rotor 5, the front end of the blade 4 is kept in contact with the curved surface of the cylindrical cam 7 by the force of the spring 3, the spring 3 is kept by the pressing ring 2, and the pressing ring 2 is fixed on the rotor 5, as shown in figure 3.
As shown in fig. 1 and 3, when the cylindrical cam vane pump works, the rotor 5 rotates to drive the vanes 4 in the grooves to rotate simultaneously, and the springs apply force when the vanes 4 rotate to enable the front ends of the vanes 4 to contact the curved surface of the cylindrical cam 7 to work to form volume change, so that the suction and discharge effects are achieved. And when the rotor 5 rotates, the excircle is kept concentric by the inner chamber of the pump shell 6, the inner circle is kept concentric with the excircle of the concentric stator 8, vibration is reduced during operation, and noise of the cylindrical cam vane pump at a working chamber is effectively reduced.
As shown in fig. 5, the cylindrical cam 7 may be machined with a step instead of a diversion trench on each side of the inlet and outlet, so that the fluid may be discharged to the outlet through the step (default is that there is a diversion trench at the pump case).
Claims (3)
1. A cylindrical cam vane pump is provided with:
a pump housing 6, a cover plate 1;
a cylindrical cam 7 fixed to the inside of the pump housing 6;
the concentric stator 8 is fixed with the cylindrical cam 7 and is higher than the curved surface of the cylindrical cam 7 so as to assemble the rotor and fix the inner concentricity;
a rotor 5 disposed in the pump housing 6 and having a plurality of grooves formed therein; and a plurality of blades 4 which are respectively arranged in the plurality of grooves, and the blades 4 are propped by the springs 3;
the rear end part of the blade 4 is provided with a slot for placing a spring 3;
the rotor groove is internally provided with a blind hole for placing a spring 3, and a pressing ring 2 is fixed after the spring 3 is placed in the blind hole.
2. The cylindrical cam 7 is a main component and is mainly characterized in that:
firstly, in order to work under the concentric condition, a cylindrical cam 7 is used for replacing the deviation structure of the traditional vane pump, so that the noise and vibration during the work are reduced;
secondly, after the curved surface of the cylindrical cam 7 is processed, the front end of the blade 4 can be ensured to be contacted with the curved surface no matter at any angle;
thirdly, the flow of the cylindrical cam vane pump can be achieved by replacing the cylindrical cam 7 under the condition of not changing the rotating speed and the whole size, and the curved surface of the cylindrical cam 7 is similar to a sine wave, so that the larger the fluctuation is, the larger the flow is, and the smaller the flow is otherwise;
fourthly, the cylindrical cam 7 can be respectively processed with a step on the two sides of the inlet and the outlet to replace the diversion trench at the inlet and the outlet of the inner cavity of the pump shell 6.
3. Besides the concentric stator 8 for positioning the inner concentricity of the rotor 5, other concentric stators 8 may have a shaft hole at the center thereof for power input, or a side opening for an inlet/outlet of a pump or an overflow valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211588189.1A CN115807769A (en) | 2022-12-12 | 2022-12-12 | Cylindrical cam vane pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211588189.1A CN115807769A (en) | 2022-12-12 | 2022-12-12 | Cylindrical cam vane pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115807769A true CN115807769A (en) | 2023-03-17 |
Family
ID=85485754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211588189.1A Pending CN115807769A (en) | 2022-12-12 | 2022-12-12 | Cylindrical cam vane pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115807769A (en) |
-
2022
- 2022-12-12 CN CN202211588189.1A patent/CN115807769A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |