CN115199539A

CN115199539A - Double-rotor vacuum pump

Info

Publication number: CN115199539A
Application number: CN202210967990.0A
Authority: CN
Inventors: 张修良; 韦念华
Original assignee: Guilin Huabiao Information Technology Co ltd
Current assignee: Guilin Huabiao Information Technology Co ltd
Priority date: 2022-08-12
Filing date: 2022-08-12
Publication date: 2022-10-18

Abstract

The invention discloses a double-rotor vacuum pump, which comprises a pump body, wherein a heat dissipation plate is fixedly connected to the outer surface of the pump body, an air suction port is formed in the wall of the left side of the pump body, and a suction cavity is formed in the right side of the air suction port.

Description

Double-rotor vacuum pump

Technical Field

The invention relates to the technical field of vacuum pumps, in particular to a double-rotor vacuum pump.

Background

The vacuum pump refers to a device or apparatus for obtaining vacuum by evacuating a container to be evacuated by using a mechanical, physical, chemical or physicochemical method. In general, a vacuum pump is a device for improving, generating and maintaining a vacuum in a certain closed space by various methods.

In the prior art, as Chinese patent numbers are: CN104564683A vacuum pump rotor, which comprises a cylindrical rotor body, the top surface and the bottom surface of the rotor body are recessed inwards to form a recessed part; the middle part of the rotor body is provided with a shaft hole; four rotor grooves are formed in the rotor body at equal intervals, and the central axes of the adjacent rotor grooves are perpendicular to each other; the rotor groove comprises a strip-shaped groove and an arc-shaped groove, wherein the strip-shaped groove is formed by penetrating and extending from the top surface to the bottom surface and the side surface, and the arc-shaped groove is penetrated through with the strip-shaped groove. The two end faces of the rotor body are inwards sunken and smoothly transited, so that the mechanical lubrication performance is good, and the other four mutually perpendicular rotor grooves ensure that the stress of the rotor is uniform in the operation process.

However, in the prior art, the conventional carbon piece vacuum pump has the defects of high noise, high power consumption, low vacuum efficiency, easy fragmentation of the carbon piece, short service life, high repair rate, easy contamination of products caused by carbon powder at an air outlet, air pollution caused by the carbon powder dust, high failure rate of an electronic circuit board near the carbon piece vacuum pump, low efficiency and high energy consumption of the conventional vacuum pump.

Disclosure of Invention

Aiming at the defects of the prior art, the technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a birotor vacuum pump, includes the pump body, the outer fixed surface of the pump body is connected with the heating panel, set up the induction port in the left wall of the pump body, the right side of induction port is provided with the suction chamber, the inside in suction chamber is provided with the A axle, can design into about the bimotor structure, also can design into about the bimotor structure. The working principle of the vacuum pump is analyzed by a double-rotor up-and-down structure, and a rotor A and a rotor B are arranged at the lower rotor of the double-rotor up-and-down structure according to the figure. The outer surface of the shaft A is fixedly connected with a rotor A, the bottom of the rotor A is provided with a shaft B, and the outer surface of the shaft B is fixedly connected with a rotor B;

the left side of the rotor A is provided with an AB air suction area, the top of the AB air suction area is provided with an A air sweeping area, the bottom of the A air sweeping area is provided with a B air sweeping area, the right side of the B air sweeping area is provided with a B air exhaust area, the left rotor and the right rotor in a left-right structure are a rotor A, the right rotor is a rotor B, and a shell cavity pump body; no matter the structure about the birotor, still control the structure, A rotor clockwise rotation, B rotor anticlockwise rotation, two round rubber pad points are C air inlet position in the middle of the die cavity left side font, and the induction port promptly, the right side is the C point, sets for the initial operating point of vacuum pump at the C point, is called zero point the top in B exhaust area is provided with the gas vent, the top of gas vent is provided with A exhaust area.

Preferably, the heat dissipation plates are annularly arranged along the outer surface of the pump body, the rotor A rotates clockwise, and the rotor A rotates clockwise towards the rotor C (zero point direction). The rotor B rotates anticlockwise, the space of the air exhaust area A and the space of the air exhaust area B become smaller gradually, air is extruded out of the air exhaust port, meanwhile, the space of the air suction area C becomes larger gradually, the suction cavity is formed in the wall of the pump body, and the air exhaust port is fixedly installed on the back face of the pump body.

Preferably, the right end of the air suction port is communicated with the inside of the suction cavity, air is sucked from the air suction port, in order to prevent air from flowing back and flowing back to the air suction area during air exhaust, the gap between the point AB of the rotor A and the point AB of the rotor B is zero, the contact point of the two rotors is an air suction and exhaust isolation point, the air exhaust port is communicated with the inside of the suction cavity, and the inside of the pump body is sealed with the outside through the rotor A and the rotor B.

Preferably, the inner surface of the pump body is rotationally connected with the outer surface of the a-axis, and the suction and exhaust isolation point changes with the rotation of the rotor, so the design of the vacuum pump must be drawn by a differential design drawing, and the inner surface of the pump body is rotationally connected with the outer surface of the B-axis.

Preferably, the outer surface of the rotor A is rotatably connected with the inner surface of the pump body through a suction cavity, the space where the two rotors rotate is the suction cavity, and the inner surface of the pump body is rotatably connected with the outer surface of the rotor B.

Preferably, the AB air suction area is located on the left side of the a rotor and the B rotor, the a scavenging area is located outside the a rotor, the a exhaust area is located on the right side of the a rotor, the B scavenging area is located outside the B rotor, the B exhaust area is located outside the B rotor, and the air suction and exhaust isolation point is a contact point of the a rotor and the B rotor.

The invention has the following beneficial effects:

by arranging the pump body 1, the traditional carbon piece vacuum pump has the advantages of high noise, high power consumption, low vacuum efficiency, easy cracking of the carbon piece, short service life, high repair rate, easy product contamination caused by carbon powder at the air outlet, air pollution caused by the carbon powder dust and high failure rate of an electronic circuit board near the carbon piece vacuum pump. The double-rotor vacuum pump has the advantages that the rotors are light in weight, one pair of rotors rotate for a circle, a single rotor does work twice, the double rotors do work for four times, the three pairs of rotors are coaxially manufactured into three independent spaces, the working efficiency of air suction together is improved by 50% compared with that of a traditional carbon sheet pump, the power consumption is reduced by 40% to 50%, and the problems that the traditional carbon sheet vacuum pump is low in efficiency and high in power consumption are solved.

Drawings

FIG. 1 is a diagram of the zero-start operating state of the present invention;

FIG. 2 is a 52 degree operating condition of the present invention;

FIG. 3 is a 99 degree operating state diagram of the present invention;

FIG. 4 is a 108 degree operating state diagram of the present invention;

FIG. 5 is a diagram of the 158 degree operating state of the present invention;

fig. 6 is a 180 degree operating state diagram of the present invention.

In the figure: 1. a pump body; 2. a heat dissipation plate; 3. an air suction port; 4. a suction lumen; 5. an A axis; 6. a, a rotor; 7. a B axis; 8. a rotor B; 9. an AB air suction area; 10. a, a gas sweeping area; 11. b, a gas sweeping area; 12. b, an exhaust area; 13. an exhaust port; 14. a, an exhaust area; 15. and an air suction and exhaust isolation point.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

The first embodiment is as follows:

referring to fig. 1-6, the present invention provides a technical solution: a double-rotor vacuum pump comprises a pump body 1, wherein a heat dissipation plate 2 is fixedly connected to the outer surface of the pump body 1, an air suction port 3 is formed in the wall of the left side of the pump body 1, a suction cavity 4 is formed in the right side of the air suction port 3, an A shaft 5 is arranged inside the suction cavity 4, an A rotor 6 is fixedly connected to the outer surface of the A shaft 5, a B shaft 7 is arranged at the bottom of the A rotor 6, and a B rotor 8 is fixedly connected to the outer surface of the B shaft 7; an AB air suction area 9 is arranged on the left side of the A rotor 6, an A scavenging area 10 is arranged at the top of the AB air suction area 9, a B scavenging area 11 is arranged at the bottom of the A scavenging area 10, a B exhaust area 12 is arranged on the right side of the B scavenging area 11, an exhaust port 13 is arranged at the top of the B exhaust area 12, and an A exhaust area 14 is arranged at the top of the exhaust port 13.

The heat-dissipating plates 2 are arranged annularly along the outer surface of the pump body 1, the suction chamber 4 is opened in the wall of the pump body 1, and the exhaust port 13 is fixedly installed on the back surface of the pump body 1. The right end of the air inlet 3 is communicated with the inside of the suction cavity 4, the exhaust port 13 is communicated with the inside of the suction cavity 4, and the inside of the pump body 1 is sealed with the outside through the rotor A6 and the rotor B8. The inner surface of the pump body 1 is rotationally connected with the outer surface of the A shaft 5, and the inner surface of the pump body 1 is rotationally connected with the outer surface of the B shaft 7.

The outer surface of the rotor A6 is rotationally connected with the inner surface of the pump body 1 through the suction cavity 4, and the inner surface of the pump body 1 is rotationally connected with the outer surface of the rotor B8. The AB air suction area 9 is positioned on the left side of the A rotor 6 and the B rotor 8, the A scavenging area 10 is positioned outside the A rotor 6, the A air exhaust area 14 is positioned on the right side of the A rotor 6, the B scavenging area 11 is positioned outside the B rotor 8, the B air exhaust area 12 is positioned outside the B rotor 8, and the air suction and exhaust isolation point 15 is a contact point of the A rotor 6 and the B rotor 8.

When in use, the structure can be designed into a double-rotor up-and-down structure, and also can be designed into a double-rotor left-and-right structure. The working principle of the vacuum pump is analyzed by a double-rotor up-down structure, and according to the figure, the rotor arrangement position on the double-rotor up-down structure is that the rotor 6 is arranged at the lower rotor arrangement position, and the rotor 8 is arranged at the B rotor. The 8-shaped cavity for the two rotors to rotate is a suction cavity 4 which is the space for the two rotors to rotate. The left rotor and the right rotor are respectively an A rotor 6 and a B rotor 8, and the pump body 1 is a shell cavity; no matter the upper and lower structure of birotor, or left and right structure, rotor 6 clockwise rotation of A, rotor 8 anticlockwise rotation of B, two round rubber pad points in the middle of the 8 font in die cavity left side are C2 air inlet position, and induction port 3 promptly, the right side is the C1 point, sets for the originated operating point of vacuum pump at C1 point, is called zero point position.

The a rotor 6 rotates clockwise, the A2 of the a rotor 6 rotates clockwise (in the zero point direction) to the C1, and the A1 rotates clockwise to the C2. The rotor 8B rotates anticlockwise, the spaces of the exhaust area A14 and the exhaust area B12 become smaller gradually, air is extruded from the exhaust port 13, meanwhile, the space of the suction area C2 becomes larger gradually, air is sucked from the suction port 3, in order to prevent the air flow during exhaust from flowing back to the suction area, the gap between the rotor A6 and the rotor B8 at the point AB is zero, the contact point of the two rotors is the suction and exhaust isolation point 15, and the suction and exhaust isolation point 15 changes along with the rotation of the rotors, so the vacuum pump is designed to be drawn by a differential method design, and the working principle of the vacuum pump is described below:

the two rotors rotate by 52 degrees, the AB joint transfer position of the compression area is isolated, the air suction area and the compression area are isolated, and the air flow in the compression area is prevented from flowing back to the air suction area.

And the rotation is continued to 55 degrees (the rotor A6 rotates clockwise, the rotor B8 rotates anticlockwise) from the zero point to 107 degrees, at this time, the rotor A6A 1 closes the air suction port, a sealed space is formed from the rotor A1 to the rotor A2 clockwise, the space is called a scavenging area, and the air suction of the rotor A2 is completed and is converted into the air suction of the rotor A1. The rotor 8B rotates anticlockwise and is in an exhaust and air suction state, the two rotors A and B continue to rotate to a state of 108 degrees from a zero point, and the rotor 8B 1B rotates anticlockwise to the rotor B2 to form a closed area B scavenging area 11;

at the moment, the rotor A6 and the rotor B8 continue to rotate, the rotor A1 and the rotor B1 are in a suction working state at the same time, the rotor A2 and the rotor B2 simultaneously perform exhaust work, when the rotors continue to rotate to 158 degrees from zero, the rotor A2 opens the exhaust port 13, the airflow in the scavenging area A10 is exhausted from the exhaust port 13, the rotor B1 continues to scavenge anticlockwise, the rotor B continues to suck air, the rotors continue to rotate 22 degrees and just complete 180-degree work, the rotor A2 and the rotor B2 are in the zero-point position of the initial working point, the rotor A2 and the rotor B2 repeat the working states of the rotor A1 and the rotor B1, the rotor A2 continue to rotate 5 degrees, the rotor B2 opens the exhaust port 13 in the zero-point position (note: the rotor A1 and the rotor B2 are both at 185 degrees or the position of 5 degrees and open the exhaust port 13. The double-rotor vacuum pump rotates 180 degrees and completes two working cycles);

at this time, the two rotors a and B are in the air exhaust and air suction working state at the same time, and continue to rotate 55 degrees (the rotor a 6 rotates clockwise, the rotor B8 rotates counterclockwise) to 107 degrees from the zero point, at this time, the rotor a 6 closes the air suction port 3, and a sealed space is formed from the rotor A1 clockwise to the rotor A2, which is called a scavenging area. The A2 inspiration is completed and is switched to A1 inspiration. The rotor B8 rotates anticlockwise and is in an air exhaust and suction state, the rotors A and B continue to rotate to a state of 108 degrees from the zero point, the rotor B8 rotates anticlockwise to the rotor B2 to form a closed area B air sweeping area 11, and the rotor A6 and the rotor B8 continue to rotate. A1 and B1 are in the air suction and exhaust working state at the same time, and A2 and B2 of the two rotors perform the exhaust working at the same time. When the two rotors continue to rotate to 158 degrees from the zero point, A2 opens the exhaust port 13, the air flow in the A scavenging area 10 is exhausted from the exhaust port 13, and B1 continues to scavenge counterclockwise. And continues to inhale simultaneously. The two rotors continue to rotate for 22 degrees to complete 180-degree work, and A2 and B2 are positioned at zero positions of initial working points. A2 And B2 repeats the working states of A1 and B1. Both rotors continue to rotate 5 degrees and B2 opens exhaust port 13 in the zero position (note: B1, B2, both at 185 degrees, or referred to as the 5 degree position, opens exhaust port 13 because the twin rotor vacuum pump rotates 180 degrees to complete one duty cycle, and rotation 360 completes two duty cycles).

It should be apparent that the described embodiments are only some of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by one of ordinary skill in the art and related arts based on the embodiments of the present invention without any creative effort, shall fall within the protection scope of the present invention. Structures, devices, and methods of operation not specifically described or illustrated herein are not shown or described, but are instead taught or suggested as being conventional in the art.

Claims

1. A birotor vacuum pump, includes pump body (1), its characterized in that: the heat pump comprises a pump body (1), a heat dissipation plate (2) and a rotor A, wherein the heat dissipation plate (2) is fixedly connected to the outer surface of the pump body (1), an air suction port (3) is formed in the wall of the left side of the pump body (1), a suction cavity (4) is formed in the right side of the air suction port (3), an shaft A (5) is arranged inside the suction cavity (4), the rotor A (6) is fixedly connected to the outer surface of the shaft A (5), the rotor B (7) is arranged at the bottom of the rotor A (6), and the rotor B (8) is fixedly connected to the outer surface of the shaft B (7);

the left side of A rotor (6) is provided with AB suction area (9), the top of AB suction area (9) is provided with A scavenging area (10), the bottom of A scavenging area (10) is provided with B scavenging area (11), the right side of B scavenging area (11) is provided with B exhaust area (12), the top of B exhaust area (12) is provided with gas vent (13), the top of gas vent (13) is provided with A exhaust area (14).

2. A twin rotor vacuum pump as defined in claim 1, wherein: the heat dissipation plate (2) is annularly arranged along the outer surface of the pump body (1), the suction cavity (4) is formed in the wall of the pump body (1), and the exhaust port (13) is fixedly installed on the back face of the pump body (1).

3. A dual rotor vacuum pump as claimed in claim 1, wherein: the right end of the air suction port (3) is communicated with the inside of the suction cavity (4), the exhaust port (13) is communicated with the inside of the suction cavity (4), and the inside of the pump body (1) is sealed with the outside through the rotor A (6) and the rotor B (8).

4. A twin rotor vacuum pump as defined in claim 1, wherein: the inner surface of the pump body (1) is rotationally connected with the outer surface of the shaft A (5), and the inner surface of the pump body (1) is rotationally connected with the outer surface of the shaft B (7).

5. A twin rotor vacuum pump as defined in claim 1, wherein: the outer surface of the rotor A (6) is rotationally connected with the inner surface of the pump body (1) through the suction cavity (4), and the inner surface of the pump body (1) is rotationally connected with the outer surface of the rotor B (8).

6. A dual rotor vacuum pump as claimed in claim 1, wherein: the AB air suction area (9) is positioned on the left sides of the rotor A (6) and the rotor B (8), the A air sweeping area (10) is positioned outside the rotor A (6), and the A air exhaust area (14) is positioned on the right side of the rotor A (6).

7. A twin rotor vacuum pump as defined in claim 1, wherein: the B scavenging area (11) is positioned outside the B rotor (8), the B exhaust area (12) is positioned outside the B rotor (8), and the air suction and exhaust isolation point (15) is a contact point of the A rotor (6) and the B rotor (8).