Energy-saving and environment-friendly roots vacuum pump

Abstract

The utility model discloses an energy -conserving and environment -friendly roots vacuum pump belongs to vacuum pump technical field, including vacuum pump pump body, and the inside rotation of vacuum pump pump body and set up initiative shaft, and it is optimized to change short, and the end cap part adopts fluorine rubber O type ring seal, the output of permanent magnet motor with initiative shaft fixed coupling, the control box for controlling permanent magnet motor is fixedly arranged to the shell connecting end, and the shell connecting end fixedly arranged sealing disc, and the sealing disc is through fixed on the end cap. The utility model permanent magnet motor inside installation mode, solve the oil leakage problem caused by the long -term use wear of driving sealing assembly, make the workshop and surrounding environment more environmental protection and energy -conserving.

Description

Technical Field

[0001] This utility model relates to the field of vacuum pump technology, specifically an energy-saving and environmentally friendly Roots vacuum pump. Background Technology

[0002] Roots vacuum pumps are positive displacement vacuum pumps. Due to their advantages such as high pumping speed, fast start-up, and stable pumping speed over a wide pressure range, they are widely used in chemical, pharmaceutical, electronics, and food packaging industries.

[0003] Existing Roots vacuum pumps are driven by a motor, which is fixed to one end of the pump body by a flange. To ensure the stability of the motor, a support frame needs to be installed at one end of the pump body to support the motor. However, the installation and connection of the existing Roots vacuum pump motor to the pump body requires a bearing to pass through the pump body and connect to the drive shaft, which makes it easy for oil inside the pump body to leak out from the shaft gap and contaminate the working environment. Utility Model Content

[0004] The purpose of this invention is to provide an energy-saving and environmentally friendly Roots vacuum pump to at least partially solve the aforementioned technical problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution: It includes a vacuum pump body and a drive shaft that rotates inside the vacuum pump body. One end of the vacuum pump body is fixedly fitted with an end cap, and a housing is fixed to the outer end of the end cap. A permanent magnet motor is fixedly installed inside the housing, and the output end of the permanent magnet motor is fixedly connected to the drive shaft. A control box for controlling the permanent magnet motor is fixedly installed on the top of the housing. A sealing disc is fixedly installed at the connecting end of the housing, and the sealing disc is fixed to the outer end of the end cap by bolts.

[0006] Preferably, the vacuum pump body has a first rotor and a second rotor rotatably mounted inside. The first rotor is fixedly sleeved on the outer wall of the drive shaft. A first gear is fixedly mounted on the other end of the first rotor. Two second gears that mesh with the first gear are fixedly mounted on the other end of the second rotor. The teeth on the first gear and the second gears are inclined teeth.

[0007] Preferably, the end cap has multiple threaded holes that match the bolts at its connecting end, and the sealing disc has multiple through holes that are symmetrical to the threaded holes at its connecting end. One end of the bolt is threaded into the threaded hole through the through hole.

[0008] Preferably, the vacuum pump body has support bearings at both ends for supporting the first rotor and the second rotor, respectively.

[0009] Preferably, a matching fluororubber O-ring is provided at the connection between the end cap and the sealing disc, and a power socket is fixedly provided on the outer wall of the control box.

[0010] Preferably, the permanent magnet motor connection end is fitted to the inner wall of the housing, and one end of the housing is connected to the interior of the vacuum pump body.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. In use, the permanent magnet motor is encased inside the housing. The sealing plate at the connection end of the housing is connected to the end cover of the vacuum pump body for installation and fixed with bolts. Compared with the previous external drive motor method, this solves the problem of oil leakage caused by long-term wear of the drive sealing component, making the application workshop and surrounding environment more environmentally friendly and energy-saving. At the same time, it reduces the installation of the drive motor support frame and reduces the overall area occupied by the vacuum pump body compared with the previous external method.

[0012] 2. When this utility model is used, the first and second gears are inclined gears. When the three gears mesh, the force gradually increases and then decreases, resulting in lower operating noise of the vacuum pump body and improved working environment. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this embodiment; Figure 2 This is a schematic diagram of the separate casing structure in this embodiment; Figure 3 This is a schematic diagram of the connection structure of the permanent magnet motor inside the casing in this embodiment; Figure 4 This is a schematic diagram of the internal structure of the vacuum pump body in this embodiment.

[0015] The attached diagram lists the components represented by each number as follows: 1. Vacuum pump body; 11. Drive shaft; 12. First rotor; 13. First gear; 14. Second gear; 15. Second rotor; 2. End cover; 3. Housing; 31. Permanent magnet motor; 4. Sealing disc; 5. Control box; 6. Power socket; 7. Bolt; 8. Fluororubber O-ring. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-4 This utility model provides a technical solution: an energy-saving and environmentally friendly Roots vacuum pump, including a vacuum pump body 1 and a drive shaft 11 that rotates inside the vacuum pump body 1. An end cover 2 is fixedly installed at one end of the vacuum pump body 1, and a housing 3 is fixedly installed at the outer end of the end cover 2. A permanent magnet motor 31 is fixedly installed inside the housing 3. The output end of the permanent magnet motor 31 is fixedly connected to the drive shaft 11. A control box 5 for controlling the permanent magnet motor 31 is fixedly installed on the top of the housing 3. A sealing disc 4 is fixedly installed at the connecting end of the housing 3. The sealing disc 4 is fixed to the outer end of the end cover 2 by bolts 7. The permanent magnet motor 31 is enclosed inside the housing 3. The sealing plate 4 set at the connecting end of the housing 3 is connected to the end cover 2 of the vacuum pump body 1 for installation and fixed by bolts 7. Compared with the previous method of externally mounted drive motor, the permanent magnet motor 31 is installed in the vacuum pump body 1 and the oil inside will not be exposed. This solves the problem of oil leakage caused by long-term wear of the drive sealing components, making the application workshop and surrounding environment more environmentally friendly and energy-saving. At the same time, it reduces the installation of the support frame for supporting the drive motor and reduces the overall area occupied by the vacuum pump body 1 compared with the previous external mounting method.

[0018] More preferably, a first rotor 12 and a second rotor 15 are rotatably arranged inside the vacuum pump body 1. The first rotor 12 is fixedly sleeved on the outer wall of the drive shaft 11. A first gear 13 is fixedly arranged at the other end of the first rotor 12. Two second gears 14 that mesh with the first gear 13 are fixedly arranged at the other end of the second rotor 15. The teeth on the first gear 13 and the second gear 14 are helical gears, which reduce noise when they are running. The first gear 13 at one end of the first rotor 12 meshes with two second gears 14 at one end of the second rotor 15, so that the first rotor 12, which is actively rotating, drives the second rotor 15 to rotate, through the first gear 13 and the second gears 14.

[0019] More preferably, the connecting end of the end cap 2 is provided with multiple screw holes that match the bolt 7, and the connecting end of the sealing disc 4 is provided with multiple through holes that are symmetrical to the screw holes. One end of the bolt 7 is threaded into the screw hole through the through hole. The screw holes in the end cap 2 are used to thread one end of the bolt 7 onto the end cap 2. The through holes in the sealing disc 4 match the screw holes and are fitted onto multiple bolts 7. The sealing disc 4 is then fixed with nuts.

[0020] More preferably, the vacuum pump body 1 has support bearings at both ends for supporting the first rotor 12 and the second rotor 15, respectively.

[0021] In a further preferred embodiment, a matching fluororubber O-ring 8 is provided at the connection between the end cap 2 and the sealing plate 4, and a power socket 6 is fixedly provided on the outer wall of the control box 5; The fluororubber O-ring 8 provided at the connection between the end cover 2 and the sealing plate 4 is used to seal the connection between the end cover 2 and the sealing plate 4, and the control box 5 is used to control the permanent magnet motor 31.

[0022] In a further preferred embodiment, the connection end of the permanent magnet motor 31 is fitted to the inner wall of the housing 3, and one end of the housing 3 is connected to the interior of the vacuum pump body 1.

[0023] One specific application of this embodiment is as follows: the power socket 6 provided on the outside of the control box 5 is used to connect to the power supply. The permanent magnet motor 31 is installed inside the housing 3 and communicates with the vacuum pump body 1. The lubricating oil inside the vacuum pump body 1 can communicate with the bearing part of the permanent magnet motor 31 and share the effect of lubricating oil. The permanent magnet motor 31 is wrapped inside the housing 3. The sealing plate 4 provided at the connecting end of the housing 3 is connected to the end cover 2 of the vacuum pump body 1 for installation and fixed by bolts 7. Compared with the previous method of externally mounted drive motor, the oil inside the vacuum pump body 1 will not be exposed when the permanent magnet motor 31 is installed inside, thus improving the working environment.

[0024] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An energy-saving and environmentally friendly Roots vacuum pump, comprising a vacuum pump body (1) and a drive shaft (11) rotating inside the vacuum pump body (1), characterized in that: The vacuum pump body (1) has an end cap (2) fixedly installed at one end. The outer end of the end cap (2) is fixed with a housing (3). The housing (3) is fixedly installed with a permanent magnet motor (31). The output end of the permanent magnet motor (31) is fixedly connected to the drive shaft (11). The top of the housing (3) is fixedly installed with a control box (5) for controlling the permanent magnet motor (31). The connecting end of the housing (3) is fixedly installed with a sealing disc (4). The sealing disc (4) is fixed to the outer end of the end cap (2) by bolts (7).

2. The energy-saving and environmentally friendly Roots vacuum pump according to claim 1, characterized in that: The vacuum pump body (1) is rotatably equipped with a first rotor (12) and a second rotor (15). The first rotor (12) is fixedly sleeved on the outer wall of the drive shaft (11). A first gear (13) is fixedly installed at the other end of the first rotor (12). Two second gears (14) that mesh with the first gear (13) are fixedly installed at the other end of the second rotor (15). The teeth on the first gear (13) and the second gears (14) are inclined teeth.

3. The energy-saving and environmentally friendly Roots vacuum pump according to claim 1, characterized in that: The end cap (2) has multiple screw holes that match the bolt (7) at its connecting end, and the sealing disc (4) has multiple through holes that are symmetrical to the screw holes at its connecting end. One end of the bolt (7) is threaded into the screw hole through the through hole.

4. The energy-saving and environmentally friendly Roots vacuum pump according to claim 1, characterized in that: The vacuum pump body (1) has support bearings at both ends for supporting the first rotor (12) and the second rotor (15).

5. The energy-saving and environmentally friendly Roots vacuum pump according to claim 4, characterized in that: A matching fluororubber O-ring (8) is provided at the connection between the end cap (2) and the sealing plate (4), and a power socket (6) is fixedly provided on the outer wall of the control box (5).

6. The energy-saving and environmentally friendly Roots vacuum pump according to claim 1, characterized in that: The permanent magnet motor (31) connection end is attached to the inner wall of the housing (3), and one end of the housing (3) is connected to the inside of the vacuum pump body (1).

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