Water-cooled sealed motor roots vacuum pump

Abstract

The utility model relates to the technical field of vacuum pump, concretely is a water -cooling sealed motor roots vacuum pump, including integrated shell, one end of integrated shell is connected with sealed baffle and installs on double wall board another end, makes the contact surface between integrated shell and double wall board form static seal surface, the isobaric sealed chamber is formed in integrated shell inside, integrated core shaft, induction motor rotor and split type induction motor stator set up in isobaric sealed chamber. The utility model discloses through changing the external motor to built -in water -cooling sealed motor, improves the use performance of vacuum pump and prolongs the service life of vacuum pump, the structure is relatively simple, cancels the shaft coupling of traditional structure, and transmission is more stable, and transmission efficiency is higher, the sealing performance of precision seal lifting pump is improved by changing the dynamic seal in traditional structure, and integrated internal water cooling can provide better cooling environment compared with traditional air -cooled motor structure.

Description

Technical Field

[0001] This utility model relates to the field of vacuum pump technology, and in particular to a water-cooled sealed motor Roots vacuum pump. Background Technology

[0002] With the continuous upgrading of the manufacturing industry, the domestic demand for vacuum pumps is showing a sustained growth trend. Currently, vacuum pump power input typically uses an external motor and coupling. This has several drawbacks:

[0003] From the perspective of equipment operational stability, vacuum pumps exhibit specific circumferential periodic characteristics during operation. As their rotor rotates circumferentially, periodic vibrations are inevitable. The coupling, as the component connecting the external motor and the vacuum pump rotor, is inherently unable to effectively suppress this vibration; in fact, it can exacerbate its generation and transmission to some extent. This excessive vibration leads to overall instability in the vacuum pump's operation, subjecting critical internal components, such as gears, to additional alternating stress. This accelerates gear wear, shortens their lifespan, increases maintenance costs and downtime, and impacts production continuity and efficiency.

[0004] In terms of energy efficiency, couplings are not ideal energy transmission elements during power transmission. Due to limitations in their mechanical structure and manufacturing precision, couplings inevitably consume some energy when transmitting power. This energy loss not only wastes energy and increases production costs for enterprises, but also hinders their efforts to achieve energy conservation and emission reduction goals.

[0005] Sealing performance is one of the key indicators for the normal operation of a vacuum pump. In existing technologies, because the motor is externally mounted, a dynamic seal must be established between the rotor shaft and the housing to transmit power from the motor to the rotor while ensuring the vacuum environment inside the pump. However, dynamic sealing technology itself has certain limitations, and its seal life is relatively limited. In actual use, as the equipment operates for a longer period, the dynamic seal components will gradually lose their sealing effect due to wear, aging, and other factors, leading to seal failure in the vacuum pump. Once the seal fails, outside air will enter the vacuum pump, disrupting its vacuum environment and severely affecting its performance, preventing it from achieving the expected vacuuming effect and reducing product quality.

[0006] In summary, existing vacuum pump power input technologies suffer from numerous inconveniences and defects in practical use, such as unstable operation, energy waste, and difficulty in ensuring sealing performance. These issues severely restrict further improvements in vacuum pump performance and the efficient and stable operation of industrial production. Therefore, improving and innovating existing vacuum pump power input technologies is of significant practical importance and urgency. Utility Model Content

[0007] To address the aforementioned shortcomings, the purpose of this invention is to provide a water-cooled sealed motor Roots vacuum pump, which solves the technical problems of weak sealing effect, low motor efficiency, and vibration transmission in existing vacuum pumps.

[0008] To achieve the above objectives, this utility model provides a water-cooled sealed motor Roots vacuum pump, comprising an integrated mandrel, an induction motor rotor, and a split induction motor stator. The induction motor rotor is disposed on the outer side of the integrated mandrel, and the split induction motor stator is disposed on the outer side of the induction motor rotor. It also includes an integrated housing, one end of which is connected to a sealing baffle and the other end is mounted on a double-wall plate, so that the contact surface between the integrated housing and the double-wall plate forms a static sealing surface. An isobaric sealed chamber is formed inside the integrated housing, and the integrated mandrel, induction motor rotor, and split induction motor stator are disposed within the isobaric sealed chamber.

[0009] As a preferred technical solution, the integrated housing has an internal water inlet guide hole and an internal water return guide hole, which are connected by several annular water cooling channels.

[0010] As a preferred technical solution, several annular water-cooling channels are arranged at equal intervals.

[0011] As a preferred technical solution, the inlet water through-hole is located on the upper part of the integrated housing, and the return water through-hole is located on the lower part of the integrated housing.

[0012] As a preferred technical solution, the water inlet internal guide hole is connected to a cooling water inlet hole, and the water return internal guide hole is connected to a cooling water return hole.

[0013] As a preferred technical solution, the cooling water inlet is located at the top of the integrated housing, and the cooling water return hole is located at the bottom of the integrated housing.

[0014] As a preferred technical solution, an explosion-proof junction box is also provided on the outside of the integrated housing.

[0015] This utility model provides a water-cooled sealed motor Roots vacuum pump. By replacing the external motor with an internal water-cooled sealed motor, the performance of the vacuum pump is improved and its service life is extended. The structure is relatively simple, eliminating the coupling of the traditional structure, resulting in smoother transmission and higher transmission efficiency. The dynamic seal in the traditional structure is replaced with a precision seal to improve the sealing performance of the pump. The integrated internal water cooling provides a better cooling environment compared to the traditional air-cooled motor structure. Attached Figure Description

[0016] Figure 1This is a cross-sectional view of the water-cooled sealed motor Roots vacuum pump of this utility model;

[0017] Figure 2 A schematic diagram of the integrated housing structure;

[0018] Figure 3 Another structural diagram of the unibody shell;

[0019] Figure 4 This is a cross-sectional view of the annular water-cooling channel;

[0020] Figure 5 This is a schematic diagram of the annular water-cooling channel.

[0021] In the picture:

[0022] 1-Induction motor rotor, 2-Split induction motor stator, 3-Annular water-cooling channel, 4-Integrated spindle, 5-Static sealing surface, 6-Integrated housing, 7-Double wall plate, 8-Sealing baffle, 9-Isobaric sealing chamber, 10-Explosion-proof junction box, 11-Cooling water inlet hole, 12-Cooling water return hole, 13-Return water internal guide hole, 14-Inlet water internal guide hole. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.

[0024] Example 1:

[0025] See Figure 1 This utility model provides a water-cooled sealed motor Roots vacuum pump, including an integrated housing 6. One end of the integrated housing 6 is connected to a sealing baffle 8 and the other end is installed on a double wall plate 7, so that the contact surface between the integrated housing 6 and the double wall plate 7 forms a static sealing surface 5, thereby forming an isobaric sealed chamber 9 inside the integrated housing 6, effectively improving the sealing performance of the vacuum pump.

[0026] The isobaric sealed chamber 9 is provided with an integrated mandrel 4, an induction motor rotor 1, and a split induction motor stator 2. The induction motor rotor 1 is provided on the outside of the integrated mandrel 4, and the split induction motor stator 2 is provided on the outside of the induction motor rotor 1.

[0027] The split-type induction motor stator 2 is used to convert electrical energy into a rotating magnetic field. The induction motor rotor 1, through electromagnetic induction with the split-type induction motor stator 2, ultimately converts the rotating magnetic field into an induced electromotive force, thereby driving the integrated spindle 4 to rotate. At the same time, the power is transmitted to the split-type induction motor stator 2 without loss, thus achieving the purpose of smooth and efficient operation.

[0028] The integrated housing 6 is a water-cooled sealed motor housing and a gear oil housing, used to enclose the motor and provide storage space for bearing and gear lubricating oil. By replacing the external motor with an internal water-cooled sealed motor, the performance of the vacuum pump is improved and its service life is extended; the structure is relatively simple, eliminating the traditional coupling, resulting in smoother and more efficient transmission; the dynamic seal in the traditional structure is replaced with a precision seal to improve the pump's sealing performance, and the integrated internal water cooling provides a better cooling environment compared to the traditional air-cooled motor structure.

[0029] See Figures 2 to 5 The integrated housing 6 has an internal water inlet guide hole 14 and an internal water return guide hole 13. The internal water inlet guide hole 14 is located at the upper part of the integrated housing 6, and the internal water return guide hole 13 is located at the lower part of the integrated housing 6. The internal water inlet guide hole 14 and the internal water return guide hole 13 are connected by several annular water-cooling channels 3. The several annular water-cooling channels 3 are arranged at equal intervals. The main function of the annular water-cooling channels 3 is to transfer the heat generated by the motor to the cooling water through heat exchange, thereby achieving the function of cooling the motor.

[0030] The water inlet through-hole 14 is connected to the cooling water inlet hole 11, which is located at the top of the integrated housing 6; the water return through-hole 13 is connected to the cooling water return hole 12, which is located at the bottom of the integrated housing 6.

[0031] During operation, cold water enters the inlet water passage 14 through the cooling water inlet hole 11, then flows into each annular water-cooling channel 3, and finally flows back to the return water passage 13, and is discharged through the cooling water return hole 12. This achieves heat exchange, and the integrated internal water cooling on the one-piece housing 6 provides a better cooling environment compared to the traditional air-cooled motor structure.

[0032] An explosion-proof junction box 10 is also provided on the outside of the integrated housing 6.

[0033] This utility model provides a water-cooled sealed motor Roots vacuum pump. By replacing the external motor with an internal water-cooled sealed motor, the performance of the vacuum pump is improved and its service life is extended. The structure is relatively simple, eliminating the coupling of the traditional structure, resulting in smoother transmission and higher transmission efficiency. The dynamic seal in the traditional structure is replaced with a precision seal to improve the sealing performance of the pump. The integrated internal water cooling provides a better cooling environment compared to the traditional air-cooled motor structure.

[0034] Of course, there may be other embodiments of this utility model. Without departing from the spirit and essence of this utility model, those skilled in the art can make various corresponding changes and modifications based on this utility model, but these corresponding changes and modifications should all fall within the protection scope of the appended claims of this utility model.

Claims

1. A water-cooled sealed motor Roots vacuum pump, comprising an integrated mandrel (4), an induction motor rotor (1), and a separate induction motor stator (2), wherein the induction motor rotor (1) is disposed on the outer side of the integrated mandrel (4), and the separate induction motor stator (2) is disposed on the outer side of the induction motor rotor (1), characterized in that, It also includes an integrated housing (6), one end of which is connected to a sealing baffle (8) and the other end is mounted on a double wall plate (7), so that the contact surface between the integrated housing (6) and the double wall plate (7) forms a static sealing surface (5). An equal pressure sealed chamber (9) is formed inside the integrated housing (6), and the integrated spindle (4), the induction motor rotor (1) and the split induction motor stator (2) are disposed in the equal pressure sealed chamber (9).

2. The water-cooled sealed motor Roots vacuum pump according to claim 1, characterized in that, The integrated housing (6) has an internal water inlet guide hole (14) and an internal water return guide hole (13) inside, and the internal water inlet guide hole (14) and the internal water return guide hole (13) are connected by several annular water cooling channels (3).

3. The water-cooled sealed motor Roots vacuum pump according to claim 2, characterized in that, Several annular water-cooling channels (3) are arranged at equal intervals.

4. The water-cooled sealed motor Roots vacuum pump according to claim 2, characterized in that, The water inlet internal guide hole (14) is located on the upper part of the integrated housing (6), and the water return internal guide hole (13) is located on the lower part of the integrated housing (6).

5. The water-cooled sealed motor Roots vacuum pump according to claim 4, characterized in that, The water inlet through hole (14) is connected to the cooling water inlet hole (11), and the water return through hole (13) is connected to the cooling water return hole (12).

6. The water-cooled sealed motor Roots vacuum pump according to claim 5, characterized in that, The cooling water inlet (11) is located at the top of the integrated housing (6), and the cooling water return hole (12) is located at the bottom of the integrated housing (6).

7. The water-cooled sealed motor Roots vacuum pump according to claim 1, characterized in that, An explosion-proof junction box (10) is also provided on the outside of the integrated housing (6).

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