Single-stage rotary vane vacuum pump with replaceable motor

Abstract

The utility model relates to the technical field of vacuum pumps, in particular to a replaceable motor type single-stage rotary vane vacuum pump which comprises a base, a cylinder body is fixedly connected to the upper surface of the base, a rotor input shaft is rotatably connected to the inner wall of the cylinder body, and a fixed box is fixedly connected to the side, close to the cylinder body, of the base. A horizontal motor is installed on the upper surface of the base, a first rotating rod is fixedly connected to the output end of the horizontal motor, a driving belt wheel is fixedly connected to the other end of the first rotating rod, and a first driven belt wheel is fixedly connected to the end, away from the cylinder body, of a rotor input shaft; the side, close to the driving belt wheel, of the fixing box is rotationally connected with a second rotating rod, and the other end of the second rotating rod is fixedly connected with a second driven belt wheel. According to the utility model, the problem that the vacuum pump is relatively high in use cost due to the fact that the vacuum pump is relatively poor in adaptability and difficult to adapt to the use requirements of different pumping speeds and the vacuum pump with adaptive requirements needs to be used under the different pumping speed requirements is solved.

Description

Technical Field

[0001] This utility model relates to the field of vacuum pump technology, and in particular to a replaceable motor type single-stage rotary vane vacuum pump. Background Technology

[0002] A vacuum pump is a device that extracts gas through mechanical, physical, or chemical methods to create a pressure environment below atmospheric pressure in a closed space. Rotary vane vacuum pumps, in particular, achieve gas transfer by dynamically changing the sealed volume and are commonly used in industrial, scientific research, and environmental protection fields.

[0003] Existing technologies often have the following drawbacks: the pumping speed of vacuum pumps in existing technologies is usually relatively fixed or only supports small-scale adjustments, resulting in poor adaptability of vacuum pumps and difficulty in adapting to different pumping speed requirements. Therefore, vacuum pumps that are adapted to different pumping speed requirements need to be used, which leads to higher operating costs for vacuum pumps.

[0004] Therefore, this utility model provides a replaceable motor type single-stage rotary vane vacuum pump. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing vacuum pumps, such as poor adaptability and difficulty in meeting the needs of different pumping speeds. As a result, different vacuum pumps are required for different pumping speeds, leading to high operating costs. Therefore, this invention proposes a replaceable motor type single-stage rotary vane vacuum pump.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a replaceable motor type single-stage rotary vane vacuum pump, including a base, a cylinder fixedly connected to the upper surface of the base, a rotor input shaft rotatably connected to the inner wall of the cylinder, a fixed box fixedly connected to the side of the base near the cylinder, a horizontal motor mounted on the upper surface of the base, a first rotating rod fixedly connected to the output end of the horizontal motor, a driving pulley fixedly connected to the other end of the first rotating rod, and a first driven pulley fixedly connected to the end of the rotor input shaft away from the cylinder.

[0007] The effect achieved by the above components is that the rotational speed of the rotor input shaft can be controlled and adjusted by means of the horizontal motor, the first rotating rod, the driving pulley and the first driven pulley.

[0008] Preferably, a second rotating rod is rotatably connected to the side of the fixed box near the driving pulley, and a second driven pulley is fixedly connected to the other end of the second rotating rod. Four transmission belts are fitted on the surfaces of the driving pulley, the first driven pulley, and the second driven pulley.

[0009] The effect achieved by the above components is that, through the transmission belt, the rotation of the driving pulley can control the synchronous rotation of the first driven pulley and the second driven pulley, and the transmission efficiency can be improved through the second driven pulley.

[0010] Preferably, the base has a sliding groove on the side near the horizontal motor, a slide bar is slidably connected to the surface of the sliding groove on the base, and a mounting block is fixedly connected to the side of the slide bar near the horizontal motor. The mounting block is fixedly connected to the horizontal motor.

[0011] The aforementioned components achieve the following effects: the horizontal motor and the base can be connected through the mounting block and slide bar, and the position of the horizontal motor can be adjusted through the slide bar.

[0012] Preferably, a slider is slidably connected to the surface of the groove on the base, a movable plate is fixedly connected to the side of the slider near the horizontal motor, two connecting rods are fixedly connected to the side of the movable plate near the mounting block, the other ends of the two connecting rods are fixedly connected to the mounting block, a fixed plate is fixedly connected to the upper surface of the base, and an adjusting screw is threaded into the inner wall of the fixed plate, the adjusting screw being rotatably connected to the movable plate.

[0013] The aforementioned components achieve the following effects: the position of the horizontal motor can be adjusted by using the fixed plate, adjusting screw, moving plate, and connecting rod; and the stability of the horizontal motor during movement can be improved by using the moving plate and two connecting rods.

[0014] Preferably, a lower housing is fixedly connected to the side of the base near the transmission belt, and an upper housing is detachably installed on the upper surface of the lower housing. Both the lower housing and the upper housing are sleeved on the surface of the transmission belt.

[0015] The effect achieved by the above components is that the upper and lower housings can seal the transmission belt, thereby slowing down the aging of the transmission belt and maximizing its service life.

[0016] Preferably, two positioning plates are fixedly connected to the surface of the lower housing, and two connecting plates are fixedly connected to the side of the upper housing near the positioning plates. A positioning rod is fixedly connected to the side of each connecting plate near the positioning plate, and the positioning rod is slidably connected to the inner wall of the positioning plate.

[0017] The aforementioned components achieve the following effect: by using the connecting plate, positioning rod, and positioning plate, they can provide a positioning effect when connecting the upper and lower housings, while also improving the stability of the connection between the two.

[0018] Preferably, a limiting plate is fixedly connected to the side of the lower housing, and an mounting plate is fixedly connected to the side of the upper housing near the limiting plate. A connecting screw is threaded into the inner wall of the mounting plate, and the external thread of the connecting screw matches the internal thread of the limiting plate.

[0019] The effect achieved by the above components is that the upper and lower housings can be connected through the mounting plate, connecting screws, and limiting plate.

[0020] In summary:

[0021] 1. In this utility model, by setting up a horizontal motor, a driving pulley, a first driven pulley, and a transmission belt, the rotational speed of the rotor input shaft can be adjusted when different vacuum pumping speeds are required, thereby improving the adaptability of the vacuum pump and reducing the operating cost of the vacuum pump.

[0022] 2. In this utility model, the upper and lower housings can shield the driving pulley, the first driven pulley, the second driven pulley, and the transmission belt during the use of the vacuum pump, thereby improving safety, reducing noise pollution, and slowing down the aging of the transmission belt. 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 1 Enlarged view of point A;

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

[0027] Figure 5 This utility model Figure 2 A partial structural diagram.

[0028] Legend: 1. Base; 2. Cylinder; 3. Rotor input shaft; 4. Fixing box; 5. Mounting block; 6. Horizontal motor; 7. First driven pulley; 8. Slide bar; 9. Connecting rod; 10. Moving plate; 11. Slider; 12. Fixing plate; 13. Adjusting screw; 14. First rotating rod; 15. Second rotating rod; 16. Driving pulley; 17. Second driven pulley; 18. Transmission belt; 19. Lower housing; 20. Upper housing; 21. Positioning plate; 22. Connecting plate; 23. Positioning rod; 24. Limiting plate; 25. Mounting plate; 26. Connecting screw. Detailed Implementation

[0029] Reference Figure 1 and Figure 2 as well as Figure 4 As shown, this utility model provides a technical solution: a replaceable motor type single-stage rotary vane vacuum pump, including a base 1, a cylinder 2 fixedly connected to the upper surface of the base 1, a rotor input shaft 3 rotatably connected to the inner wall of the cylinder 2, a fixed housing 4 fixedly connected to the side of the base 1 near the cylinder 2, a horizontal motor 6 mounted on the upper surface of the base 1, a first rotating rod 14 fixedly connected to the output end of the horizontal motor 6, a driving pulley 16 fixedly connected to the other end of the first rotating rod 14, and a first driven pulley 7 fixedly connected to the end of the rotor input shaft 3 away from the cylinder 2. Through the horizontal motor 6, the first rotating rod 14, the driving pulley 16, and the first driven pulley 7, the rotation speed of the rotor input shaft 3 can be controlled and adjusted.

[0030] The following is a detailed explanation of its overall setup and function.

[0031] Reference Figures 1-5 As shown in this embodiment: a second rotating rod 15 is rotatably connected to the side of the fixed box 4 near the driving pulley 16, and a second driven pulley 17 is fixedly connected to the other end of the second rotating rod 15. Four transmission belts 18 are fitted on the surfaces of the driving pulley 16, the first driven pulley 7, and the second driven pulley 17. The transmission belts 18 allow the rotation of the driving pulley 16 to control the synchronous rotation of the first driven pulley 7 and the second driven pulley 17. The second driven pulley 17 improves transmission efficiency. A groove is provided on the side of the base 1 near the horizontal motor 6. A sliding strip 8 is slidably connected to the surface of the groove on the base 1. A mounting block 5 is fixedly connected to the side of the sliding strip 8 near the horizontal motor 6, and the mounting block 5 is fixedly connected to the horizontal motor 6. The mounting block 5 and the sliding strip 8 connect the horizontal motor 6 and the base 1, and the sliding strip 8 ensures that the position of the horizontal motor 6 can be adjusted. A slider 11 is slidably connected to the surface of the sliding groove on the base 1. A movable plate 10 is fixedly connected to the side of the slider 11 near the horizontal motor 6. Two connecting rods 9 are fixedly connected to the side of the movable plate 10 near the mounting block 5. The other ends of the two connecting rods 9 are fixedly connected to the mounting block 5. A fixed plate 12 is fixedly connected to the upper surface of the base 1. An adjusting screw 13 is threaded into the inner wall of the fixed plate 12. The adjusting screw 13 is rotatably connected to the movable plate 10. Through the fixed plate 12, adjusting screw 13, movable plate 10, and connecting rods 9, the position of the horizontal motor 6 can be adjusted. The movable plate 10 and the two connecting rods 9 can improve the stability of the horizontal motor 6 when it moves.

[0032] A lower housing 19 is fixedly connected to the base 1 near the transmission belt 18. An upper housing 20 is detachably mounted on the upper surface of the lower housing 19. Both the lower housing 19 and the upper housing 20 are fitted onto the surface of the transmission belt 18. The upper housing 20 and lower housing 19 provide a sealing effect for the transmission belt 18, thereby slowing down its aging and maximizing its service life. Two positioning plates 21 are fixedly connected to the surface of the lower housing 19. Two connecting plates 22 are fixedly connected to the side of the upper housing 20 near the positioning plates 21. Positioning rods 23 are fixedly connected to the sides of the connecting plates 22 near the positioning plates 21, and the positioning rods 23 are slidably connected to the inner wall of the positioning plates 21. The connecting plates 22, positioning rods 23, and positioning plates 21 provide a positioning effect when connecting the upper housing 20 and the lower housing 19, while also improving the stability of the connection. A limiting plate 24 is fixedly connected to the side of the lower housing 19, and a mounting plate 25 is fixedly connected to the side of the upper housing 20 near the limiting plate 24. A connecting screw 26 is threaded into the inner wall of the mounting plate 25, and the external thread of the connecting screw 26 matches the internal thread of the limiting plate 24. Through the mounting plate 25, the connecting screw 26, and the limiting plate 24, the connection between the upper housing 20 and the lower housing 19 can be achieved.

[0033] Working principle: When the vacuum pump is needed, it is first moved to the desired position via the base 1. Then, the horizontal motor 6 is started, driving the first rotating rod 14 and the driving pulley 16 to rotate. This, in turn, drives the first driven pulley 7 and the second driven pulley 17 to rotate via the transmission belt 18. At this time, the second rotating rod 15 rotates on the surface of the fixed box 4, and the rotor input shaft 3, driven by the first driven pulley 7, drives the rotor to rotate inside the cylinder 2, thus making the vacuum pump work. When the transmission belt 18 needs to be replaced, the adjusting screw 13 is rotated to adjust it. The inner wall of the fixed plate 12 and the surface of the movable plate 10 rotate. The movement of the movable plate 10 causes the slider 11 to slide on the surface of the groove on the base 1. At the same time, the connecting rod 9 pushes the mounting block 5 to move. The movement of the mounting block 5 causes the slide bar 8 to slide on the surface of the groove on the base 1, thereby adjusting the position of the horizontal motor 6. Then, the transmission belt 18 is replaced. After replacement, the adjusting screw 13 is rotated again to make the transmission belt 18 tightly fit against the surfaces of the driving pulley 16, the first driven pulley 7, and the second driven pulley 17. By using the horizontal motor 6, the driving pulley 16, the first driven pulley 7, and the transmission belt 18, the rotational speed of the rotor input shaft 3 can be adjusted when different vacuum pumping speeds are required, thereby improving the adaptability of the vacuum pump and reducing the operating cost of the vacuum pump.

[0034] When the vacuum pump is needed, first move the upper housing 20 closer to the lower housing 19 so that the positioning rod 23 on the connecting plate 22 engages with the positioning plate 21. Then, rotate the connecting screw 26 to connect the mounting plate 25 and the limiting plate 24, thus connecting the upper housing 20 and the lower housing 19 and shielding the drive belt 18. By using the upper housing 20 and the lower housing 19, the driving pulley 16, the first driven pulley 7, the second driven pulley 17, and the drive belt 18 can be shielded during vacuum pump operation, thereby improving safety, reducing noise pollution, and slowing down the aging of the drive belt 18.

[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 replaceable motor type single-stage rotary vane vacuum pump, comprising a base (1), characterized in that: A cylinder (2) is fixedly connected to the upper surface of the base (1). A rotor input shaft (3) is rotatably connected to the inner wall of the cylinder (2). A fixed box (4) is fixedly connected to the side of the base (1) near the cylinder (2). A horizontal motor (6) is installed on the upper surface of the base (1). A first rotating rod (14) is fixedly connected to the output end of the horizontal motor (6). A drive pulley (16) is fixedly connected to the other end of the first rotating rod (14). A first driven pulley (7) is fixedly connected to the end of the rotor input shaft (3) away from the cylinder (2).

2. The replaceable motor type single-stage rotary vane vacuum pump according to claim 1, characterized in that: The fixed box (4) is rotatably connected to a second rotating rod (15) on the side near the driving pulley (16), and the other end of the second rotating rod (15) is fixedly connected to a second driven pulley (17). Four transmission belts (18) are fitted on the surfaces of the driving pulley (16), the first driven pulley (7) and the second driven pulley (17).

3. The replaceable motor type single-stage rotary vane vacuum pump according to claim 1, characterized in that: The base (1) has a sliding groove on the side near the horizontal motor (6). A slide bar (8) is slidably connected to the surface of the sliding groove on the base (1). An mounting block (5) is fixedly connected to the side of the slide bar (8) near the horizontal motor (6). The mounting block (5) is fixedly connected to the horizontal motor (6).

4. A replaceable motor type single-stage rotary vane vacuum pump according to claim 3, characterized in that: A slider (11) is slidably connected to the surface of the groove on the base (1). A movable plate (10) is fixedly connected to the side of the slider (11) near the horizontal motor (6). Two connecting rods (9) are fixedly connected to the side of the movable plate (10) near the mounting block (5). The other ends of the two connecting rods (9) are fixedly connected to the mounting block (5). A fixed plate (12) is fixedly connected to the upper surface of the base (1). An adjusting screw (13) is threaded into the inner wall of the fixed plate (12). The adjusting screw (13) is rotatably connected to the movable plate (10).

5. A replaceable motor type single-stage rotary vane vacuum pump according to claim 1, characterized in that: The base (1) is fixedly connected to a lower housing (19) on the side near the transmission belt (18). An upper housing (20) is detachably installed on the upper surface of the lower housing (19). Both the lower housing (19) and the upper housing (20) are sleeved on the surface of the transmission belt (18).

6. A replaceable motor type single-stage rotary vane vacuum pump according to claim 5, characterized in that: Two positioning plates (21) are fixedly connected to the surface of the lower housing (19). Two connecting plates (22) are fixedly connected to the side of the upper housing (20) near the positioning plates (21). Positioning rods (23) are fixedly connected to the side of the two connecting plates (22) near the positioning plates (21). The positioning rods (23) are slidably connected to the inner wall of the positioning plates (21).

7. A replaceable motor type single-stage rotary vane vacuum pump according to claim 5, characterized in that: A limiting plate (24) is fixedly connected to the side of the lower housing (19), and an mounting plate (25) is fixedly connected to the side of the upper housing (20) near the limiting plate (24). A connecting screw (26) is threaded into the inner wall of the mounting plate (25), and the external thread of the connecting screw (26) matches the internal thread of the limiting plate (24).

Images