Three-rotary-vane structure rotor of rotary vane vacuum pump

Abstract

The utility model relates to the technical field of rotors, in particular to a three-rotary-vane structure rotor of a rotary vane vacuum pump, which comprises an input shaft, one end of the input shaft is fixedly connected with a rotor body, the surface of the rotor body is provided with three rotary vane grooves, and the surfaces of the three rotary vane grooves are connected with rotary vane bodies in a sliding manner. A limiting groove is formed in the side face of the rotary vane body, three grooves are formed in the surface of the rotor body, arc-shaped limiting blocks are slidably connected to the surfaces of the three grooves, the arc-shaped limiting blocks are slidably connected to the surfaces of the limiting grooves, and the sides, away from the grooves, of the arc-shaped limiting blocks are arc surfaces. The surfaces of the three grooves are fixedly connected with fixing plates, and the inner walls of the fixing plates are slidably connected with sliding rods. According to the technical scheme of the utility model, the problem that the installation of the rotor body is more complicated because the position of the rotary vane needs to be controlled by an operator when the rotor body is installed due to the fact that the rotary vane of the rotor body is slidably connected to the inner wall of the rotor body is solved.

Description

Technical Field

[0001] This utility model relates to the field of rotor technology, and in particular to a three-vane structure rotor for a vane vacuum pump. Background Technology

[0002] A rotary vane vacuum pump is an oil-sealed vacuum pump that achieves a pumping effect by having an offset rotor equipped with sliding vanes rotate within the pump chamber, causing the volume of the pump chamber, which is divided by the vanes, to change periodically. It can be used in metallurgy, machinery, electronics, and chemical industries.

[0003] Existing technologies often have the following drawbacks: During the installation of the three-bladed rotor structure, the blades are slidably connected to the inner wall of the rotor body, requiring operators to control the position of the blades, which makes the installation of the rotor body relatively complicated.

[0004] Therefore, this utility model provides a rotor with a three-vane structure for a rotary vane vacuum pump. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies where the rotor vanes are slidably connected to the inner wall of the rotor body, requiring operators to control the position of the vanes during rotor body installation, thus making the installation of the rotor body more complex. Therefore, this invention proposes a three-vane structure rotor for a vane vacuum pump.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a rotary vane vacuum pump rotor with a three-vane structure, including an input shaft, one end of which is fixedly connected to a rotor body, three vane grooves are formed on the surface of the rotor body, and vane bodies are slidably connected to the surfaces of the three vane grooves, a limiting groove is formed on the side of the vane body, and three grooves are formed on the surface of the rotor body, and arc-shaped limiting blocks are slidably connected to the surfaces of the three grooves, the arc-shaped limiting blocks are slidably connected to the surfaces of the limiting grooves, and the side of the arc-shaped limiting block away from the groove is an arc surface.

[0007] The effect achieved by the above components is that the arc-shaped limiting block slidably connected to the surface of the groove can move closer to or further away from the limiting groove on the rotor body, thereby restricting and releasing the position of the rotor body. The arc surface of the arc-shaped limiting block allows the rotor body to push the arc-shaped limiting block to move during installation.

[0008] Preferably, a fixing plate is fixedly connected to the surface of each of the three grooves, and a sliding rod is slidably connected to the inner wall of the fixing plate. The sliding rod is fixedly connected to the arc-shaped limiting block.

[0009] The effect achieved by the above components is that the sliding rod can be installed by the fixed plate, thereby restricting the position of the arc-shaped limit block while ensuring that it can move.

[0010] Preferably, the surface of the slide rod is fitted with a spring, and the two ends of the spring are fixedly connected to the fixing plate and the arc-shaped limiting block, respectively.

[0011] The effect achieved by the above components is as follows: the sliding rod can limit the position of the spring, and the spring can ensure a stable connection between the arc-shaped limit block and the fixed plate, while limiting the movement of the arc-shaped limit block.

[0012] Preferably, a bent rod is fixedly connected to the end of the slide rod away from the arc-shaped limiting block.

[0013] The effect achieved by the above components is that the movement of the slide bar can be controlled by the set curved rod, thereby realizing the adjustment of the position of the arc-shaped limit block.

[0014] Preferably, each of the three grooves has an adjusting arc-shaped block slidably connected to its surface. The side of the adjusting arc-shaped block away from the fixed plate is an arc surface, and the arc surface of the adjusting arc-shaped block abuts against the bent rod. A push rod is fixedly connected to the side of the adjusting arc-shaped block near the input shaft.

[0015] The effect achieved by the above components is that the position of the adjusting arc block can be moved by the push rod, thereby the adjusting arc block can push the bent rod to move.

[0016] Preferably, each of the three grooves has a sliding groove on its surface, and a slider is slidably connected to the surface of the sliding groove. The slider is fixedly connected to the adjusting arc block.

[0017] The effect achieved by the above components is that, through the set slide groove and slider, the adjustment arc block can be stably installed while ensuring that the position of the adjustment arc block can be moved.

[0018] Preferably, the rotor body has three positioning grooves on its surface, and each of the three positioning grooves is slidably connected to a positioning strip, which is fixedly connected to the rotor body.

[0019] The effect achieved by the above components is that the positioning strip, which is slidably connected to the surface of the positioning groove, can move. Through the positioning groove and the positioning strip, a positioning effect can be achieved when installing the rotary blade body.

[0020] In summary:

[0021] 1. In this utility model, the arc-shaped limiting block and limiting groove allow the position of the vane body to be restricted when it is installed into the rotor body, thereby facilitating the operator to install the rotor body into the vane vacuum pump and improving the efficiency of rotor body installation.

[0022] 2. In this utility model, by setting an adjusting arc-shaped block, push rod, bending rod, sliding rod and fixing plate, the position of the arc-shaped limiting block can be adjusted after the rotor body is installed in the installation position inside the rotary vane vacuum pump, so as to avoid affecting the use of the rotary vane body. By setting a positioning groove and positioning strip, the positioning effect can be achieved during the process of installing the rotary vane body into the rotor body. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0025] Figure 3 This utility model Figure 2 A partial structural diagram;

[0026] Figure 4 This utility model Figure 2 Enlarged view of point A;

[0027] Figure 5 This utility model Figure 1 Schematic diagram of a local structure

[0028] Figure 6 This utility model Figure 2 Enlarged view of point B.

[0029] Legend: 1. Input shaft; 2. Rotor body; 3. Vane body; 4. Vane groove; 5. Groove; 6. Limiting groove; 7. Slide groove; 8. Fixing plate; 9. Arc-shaped limiting block; 10. Slide rod; 11. Spring; 12. Bending rod; 13. Adjusting arc-shaped block; 14. Slider; 15. Push rod; 16. Positioning groove; 17. Positioning strip. Detailed Implementation

[0030] Reference Figures 1-4As shown, this utility model provides a technical solution: a three-vane structure rotor for a rotary vane vacuum pump, including an input shaft 1, one end of which is fixedly connected to a rotor body 2. Three vane grooves 4 are formed on the surface of the rotor body 2, and vane bodies 3 are slidably connected to the surfaces of the three vane grooves 4. Limiting grooves 6 are formed on the side of the vane body 3, and three recesses 5 are formed on the surface of the rotor body 2. Arc-shaped limiting blocks 9 are slidably connected to the surfaces of the three recesses 5, and the arc-shaped limiting blocks 9 are slidably connected to the surfaces of the limiting grooves 6. The side of the arc-shaped limiting block 9 away from the recesses 5 is an arc surface. The arc-shaped limiting blocks 9 slidably connected to the surface of the recesses 5 can move closer to or further away from the limiting grooves 6 on the vane bodies 3, thereby restricting and releasing the position of the vane bodies 3. The arc surface of the arc-shaped limiting blocks 9 allows the vane bodies 3 to push the arc-shaped limiting blocks 9 during installation.

[0031] The following is a detailed explanation of its overall setup and function.

[0032] Reference Figures 1-6 As shown in this embodiment: A fixing plate 8 is fixedly connected to the surface of each of the three grooves 5. A sliding rod 10 is slidably connected to the inner wall of the fixing plate 8, and the sliding rod 10 is fixedly connected to the arc-shaped limiting block 9. The fixing plate 8 allows the sliding rod 10 to be installed, thereby limiting the position of the arc-shaped limiting block 9 while ensuring its movement. A spring 11 is fitted onto the surface of the sliding rod 10, and both ends of the spring 11 are fixedly connected to the fixing plate 8 and the arc-shaped limiting block 9, respectively. The sliding rod 10 limits the position of the spring 11, ensuring a stable connection between the arc-shaped limiting block 9 and the fixing plate 8, while limiting the movement of the arc-shaped limiting block 9. A bent rod 12 is fixedly connected to the end of the sliding rod 10 away from the arc-shaped limiting block 9. The bent rod 12 controls the movement of the sliding rod 10, thereby adjusting the position of the arc-shaped limiting block 9.

[0033] Each of the three grooves 5 has an adjusting arc-shaped block 13 slidably connected to its surface. The side of the adjusting arc-shaped block 13 away from the fixed plate 8 is an arc surface, which abuts against the bent rod 12. A push rod 15 is fixedly connected to the side of the adjusting arc-shaped block 13 closest to the input shaft 1. The position of the adjusting arc-shaped block 13 can be moved by the push rod 15, thereby allowing the adjusting arc-shaped block 13 to push the bent rod 12 to move. Each of the three grooves 5 has a sliding groove 7, and a slider 14 is slidably connected to the surface of the sliding groove 7. The slider 14 is fixedly connected to the adjusting arc-shaped block 13. The sliding groove 7 and the slider 14 ensure that the adjusting arc-shaped block 13 is stably installed while allowing its position to move. The rotor body 2 has three positioning grooves 16, and positioning strips 17 are slidably connected to the surface of each of the three positioning grooves 16. The positioning strips 17 are fixedly connected to the vane body 3. The positioning strip 17, which is slidably connected to the surface of the positioning groove 16, can move. Through the positioning groove 16 and the positioning strip 17, the positioning effect can be achieved when installing the rotary blade body 3.

[0034] Working principle: When installing the rotor body 2, first move the vane body 3 so that the positioning strip 17 is close to the positioning groove 16. Then continue moving the vane body 3 so that it is engaged in the vane groove 4. During this process, when the vane body 3 contacts the arc surface of the arc-shaped limiting block 9, it pushes the arc-shaped limiting block 9, causing the slide rod 10 to slide on the inner wall of the fixing plate 8. The arc-shaped limiting block 9 moves closer to the fixing plate 8. When the limiting groove 6 on the vane body 3 approaches the arc-shaped limiting block 9, under the action of the spring force of the spring 11, the arc-shaped limiting block... The rotor body 2 is then moved into the limiting groove 6 to restrict the position of the vane body 3. The input shaft 1 is then moved into the vane vacuum pump. When the push rod 15 contacts the inner wall of the vane vacuum pump, it pushes the adjusting arc block 13 to move on the surface of the groove 5, thereby causing the slider 14 to slide on the surface of the slide groove 7. The adjusting arc block 13 pushes the bent rod 12 away from the fixed plate 8, thereby moving the arc limiting block 9 away from the vane body 3, releasing the restriction on the position of the vane body 3, and completing the installation of the rotor body 2. The arc-shaped limiting block 9 and limiting groove 6 restrict the position of the vane body 3 when it is installed into the rotor body 2, making it easier for operators to install the rotor body 2 into the vane vacuum pump and improving the efficiency of the installation. The arc-shaped adjusting block 13, push rod 15, bent rod 12, slide rod 10 and fixing plate 8 can adjust the position of the arc-shaped limiting block 9 after the rotor body 2 is installed into the vane vacuum pump, so as to avoid affecting the use of the vane body 3. The positioning groove 16 and positioning strip 17 can play a positioning role during the installation of the vane body 3 into the rotor body 2.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A rotary vane vacuum pump rotor with a three-vane structure, comprising an input shaft (1), one end of which is fixedly connected to a rotor body (2), the surface of which has three vane grooves (4), and vane bodies (3) slidably connected to the surfaces of the three vane grooves (4), characterized in that: The side of the vane body (3) is provided with a limiting groove (6), and the surface of the rotor body (2) is provided with three grooves (5). The surfaces of the three grooves (5) are slidably connected with arc-shaped limiting blocks (9). The arc-shaped limiting blocks (9) are slidably connected to the surface of the limiting groove (6), and the side of the arc-shaped limiting block (9) away from the groove (5) is an arc surface.

2. The rotor of a rotary vane vacuum pump with a three-vane structure according to claim 1, characterized in that: A fixing plate (8) is fixedly connected to the surface of each of the three grooves (5). A sliding rod (10) is slidably connected to the inner wall of the fixing plate (8). The sliding rod (10) is fixedly connected to the arc-shaped limiting block (9).

3. The rotor of a rotary vane vacuum pump with a three-vane structure according to claim 2, characterized in that: The surface of the slide rod (10) is fitted with a spring (11), and the two ends of the spring (11) are fixedly connected to the fixing plate (8) and the arc-shaped limiting block (9) respectively.

4. The rotor of a rotary vane vacuum pump with a three-vane structure according to claim 3, characterized in that: A bent rod (12) is fixedly connected to the end of the slide rod (10) away from the arc-shaped limiting block (9).

5. The rotor of a rotary vane vacuum pump with a three-vane structure according to claim 4, characterized in that: The surfaces of the three grooves (5) are slidably connected with an adjustment arc block (13). The side of the adjustment arc block (13) away from the fixed plate (8) is an arc surface. The arc surface of the adjustment arc block (13) abuts against the bent rod (12). The side of the adjustment arc block (13) near the input shaft (1) is fixedly connected with a push rod (15).

6. The rotor of a rotary vane vacuum pump with a three-vane structure according to claim 5, characterized in that: The surfaces of the three grooves (5) are provided with sliding grooves (7), and the surfaces of the sliding grooves (7) are slidably connected with sliders (14), and the sliders (14) are fixedly connected with the adjusting arc block (13).

7. The rotor of a rotary vane vacuum pump with a three-vane structure according to claim 1, characterized in that: The rotor body (2) has three positioning grooves (16) on its surface. Positioning strips (17) are slidably connected to the surfaces of the three positioning grooves (16). The positioning strips (17) are fixedly connected to the vane body (3).

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