CN212389526U

CN212389526U - High-performance rotary-vane vacuum pump

Info

Publication number: CN212389526U
Application number: CN202020999063.3U
Authority: CN
Inventors: 宋振宇
Original assignee: Changzhou Kangrun Auto Parts Co ltd
Current assignee: Changzhou Kangrun Auto Parts Co ltd
Priority date: 2020-06-03
Filing date: 2020-06-03
Publication date: 2021-01-22
Anticipated expiration: 2030-06-03

Abstract

The utility model provides a high-performance rotary-vane vacuum pump, which comprises a stator and a rotor, wherein one end of the rotor is provided with a belt pulley, the stator is provided with an air suction opening and an air outlet, the rotor is clamped with two rotary vanes which are movably connected with the stator and are arranged oppositely, the rotary vanes are connected with a second spring through a first spring, and the first spring is sleeved outside the second spring; one end of the rotary sheet connected with the stator is clamped with a freely rotating roller, and a plurality of pits are arranged on the arc-shaped wall of the roller. The belt pulley is driven by a power mechanism in the automobile; the rotary pieces are connected through the first spring and the second spring, so that the elasticity between the rotary pieces is increased, and the performance of the spring is not easily reduced even if the compression amount of the spring is large; the arrangement of the roller enables sliding friction between the rotary vane and the stator to be converted into rolling friction, and the friction force between the rotary vane and the stator is reduced; the arrangement of the concave pits enables the roller to adsorb more lubricating oil, so that the rotary vane is sealed with the stator, and the rotary vane rotates more smoothly.

Description

High-performance rotary-vane vacuum pump

Technical Field

The utility model relates to a vacuum pump field specifically is a high performance rotary-vane vacuum pump.

Background

The vacuum pump refers to a device or equipment for evacuating a container to be evacuated by mechanical, physical, chemical or physicochemical methods to achieve vacuum.

The vacuum pump of the automobile is used for generating negative pressure, so that the braking force is increased. For diesel engine powered vehicles, it is necessary to install a vacuum pump that provides a source of vacuum since the engine employs compression ignition CI, which does not provide the same level of vacuum pressure at the intake manifold. For a GDI designed to meet higher emission environmental requirements, the same level of vacuum pressure cannot be provided at the intake manifold to meet the requirements of a vacuum brake boosting system, and therefore a vacuum pump is also required to provide a vacuum source.

The traditional automobile vacuum pump comprises a pump body, a rotor, rotary vanes, an end cover, a spring and the like, wherein the rotor is eccentrically arranged in an inner cavity of the pump body, the excircle of the rotor is tangent to the wall of the inner cavity of the pump body, and the two rotary vanes with the spring are arranged on the rotor. When the rotary vane is rotated, the top end of the rotary vane is kept in contact with the inner cavity wall of the pump body by virtue of centrifugal force and the tension of the spring, and the rotor rotates to drive the rotary vane to slide along the inner cavity wall of the pump body, so that the volume of a cavity separated by the rotary vane is changed to finish the processes of air suction and air exhaust.

However, the rotating pieces in the inner cavity of the pump body of the traditional vacuum pump are expanded tightly through the spring, the two rotating pieces are close to each other or are separated from each other along a longer path, the compression amount of the rotating piece compression spring is larger, the performance of the spring can be reduced after long-term use, the rotating pieces and the stator are connected in a sliding friction mode, and the rotating pieces and the stator are easily abraded, so that the vacuum pump is damaged.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the technical problems that the performance of a spring of a traditional rotary-vane vacuum pump is easy to reduce, and a rotary vane and a stator are easy to wear to cause the damage of the vacuum pump are solved.

The utility model provides a high performance rotary-vane vacuum pump, including stator and rotor, rotor one end is equipped with the belt pulley, the stator is equipped with inlet scoop and air outlet, rotor joint have with stator swing joint and be the back of the body the arrangement's of the body spiral-vane, the spiral-vane is through first spring and second spring connection, first spring cup joints in the second spring outside; one end of the rotary piece connected with the stator is clamped with a freely rotating roller, and a plurality of pits are arranged on the arc-shaped wall of the roller.

The belt pulley is driven by a power mechanism in the automobile; the rotary pieces are connected through the first spring and the second spring, so that the elasticity between the rotary pieces is increased, and the performance of the spring is not easily reduced even if the compression amount of the spring is large; the arrangement of the roller enables sliding friction between the rotary vane and the stator to be converted into rolling friction, and the friction force between the rotary vane and the stator is reduced; the arrangement of the concave pits enables the roller to adsorb more lubricating oil, thereby not only improving the sealing performance between the rotary vane and the stator, but also enabling the rotary vane to rotate more smoothly.

Furthermore, an annular groove is formed in the end part, adjacent to the rotary piece, of the rotary piece, and the groove is used for clamping the first spring; the groove forms a cylindrical bulge, the bulge is provided with a boss, and the boss is used for clamping the second spring. The groove is used for installing and fixing the first spring, the boss is used for installing and fixing the second spring, and the structure is simple.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view of the stator and internal structure;

FIG. 3 is a schematic view of a rotor plate connection;

FIG. 4 is a cross-sectional view of FIG. 3;

FIG. 5 is an enlarged view at A in FIG. 4;

FIG. 6 is a schematic view of the structure of the rotor plate;

FIG. 7 is a cross-sectional view of a rotor plate;

FIG. 8 is a schematic view of the structure of the roller;

in the figure: 1. a belt pulley; 2. a stator; 3. a rotor; 4. rotating the sheet; 5. a first spring; 6. a second spring; 7. a roller; 21. an air suction opening; 22. an air outlet; 41. a groove; 42. a protrusion; 43. a boss; 71. and (4) pits.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

As shown in fig. 1 and 2, the utility model relates to a high performance rotary-vane vacuum pump, including stator 2 and rotor 3, one end of rotor 3 is equipped with belt pulley 1, stator 2 is equipped with inlet scoop 21 and air outlet 22, rotor 3 joint has two rotary vanes 4 that are movably connected with stator 2 and are back to back of the body and arrange, as shown in fig. 6 and 7, the adjacent tip of rotary vane 4 is equipped with annular groove 41, groove 41 constitutes cylindrical protrusion 42, protrusion 42 is equipped with boss 43; as shown in fig. 3, 4 and 5, the rotary plate 4 is connected with the second spring 6 through the first spring 5, the first spring 5 is sleeved outside the second spring 6, the first spring 5 is clamped in the groove 41, and the second spring 6 is clamped on the boss 43; one end of the rotary vane 4 connected with the stator 2 is clamped with a roller 7 which rotates freely, and as shown in fig. 8, a plurality of concave pits 71 are arranged on the arc-shaped wall of the roller 7;

the belt pulley 1 is driven by a power mechanism in the automobile; the rotary plate 4 is connected with the second spring 6 through the first spring 5, so that the elasticity between the rotary plates 4 is increased, and the performance of the spring is not easily reduced even if the compression amount of the spring is large; the arrangement of the roller 7 converts the sliding friction between the rotor plate 4 and the stator 2 into rolling friction, and reduces the friction force between the rotor plate 4 and the stator 2; the arrangement of the concave pits 71 enables the roller 7 to absorb more lubricating oil, thereby not only improving the sealing performance between the rotary vane 4 and the stator 2, but also enabling the rotary vane 4 to rotate more smoothly.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a high performance rotary-vane vacuum pump, includes stator (2) and rotor (3), rotor (3) one end is equipped with belt pulley (1), stator (2) are equipped with inlet scoop (21) and air outlet (22), rotor (3) joint have two with stator (2) swing joint and be back of the body the rotary-vane (4) of arranging, its characterized in that of carrying on the back mutually: the rotary plate (4) is connected with a second spring (6) through a first spring (5), and the first spring (5) is sleeved on the outer side of the second spring (6); one end of the rotary piece (4) connected with the stator (2) is clamped with a roller (7) which rotates freely, and a plurality of pits (71) are arranged on the arc-shaped wall of the roller (7).

2. A high performance rotary vane vacuum pump as claimed in claim 1 wherein: the adjacent end part of the rotary piece (4) is provided with an annular groove (41), and the groove (41) is used for clamping the first spring (5); recess (41) constitute cylindrical arch (42), arch (42) are equipped with boss (43), boss (43) are used for the joint second spring (6).