High-rotating-speed Roots vacuum pump synchronously driven by double motors

Abstract

The utility model relates to the field of Roots vacuum pumps, and discloses a high-rotating-speed Roots vacuum pump synchronously driven by double motors, which comprises a support and a Roots pump shell mounted on the support, a group of Roots pump rotors are arranged in a pump cavity, a sealing plate is detachably arranged on a clamping wall, a group of mounting holes are formed in the sealing plate, and the Roots pump shell is mounted on the support. A bearing piece is arranged on the bearing seat, the corresponding roots pump rotor is connected with the inner wall of the bearing piece, an outer sealing ring plate is arranged on the cover plate and is attached to the outer side of the roots pump shell, a group of driving motors are arranged on the cover plate on the right side, and the output end of the corresponding driving motor is connected with the roots pump rotor. The inlet connecting pipe is arranged above the roots pump shell, the cleaning and filtering assembly is arranged in the inlet connecting pipe, and the outlet connecting pipe is arranged below the roots pump shell, so that the sealing performance of installation of the roots pump shell can be improved, and impurities are prevented from entering the pump cavity, so that a rotor of the roots pump is prevented from being abraded, and the service life of the roots pump is not influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of Roots vacuum pumps, and particularly relates to a high-speed Roots vacuum pump driven by double motors in synchronization. Background Art

[0002] The Roots vacuum pump, abbreviated as the Roots pump, refers to a variable-volume vacuum pump in which two leaf-shaped rotors that rotate synchronously in opposite directions are installed in the pump. There are small gaps between the rotors and between the rotors and the inner wall of the pump housing without contacting each other. The high-speed Roots vacuum pump driven by double motors in synchronization has a large power, stable operation, and a wide range of applications.

[0003] When impurities enter the body of the Roots vacuum pump from the air inlet, it will cause wear of the rotors, resulting in a reduction in the service life of the Roots vacuum pump. Moreover, when the Roots vacuum pump is assembled, the sealing performance of the connection of the Roots vacuum pump housing needs to be improved, so as to improve the use effect of the Roots vacuum pump. Therefore, we propose a high-speed Roots vacuum pump driven by double motors in synchronization. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a high-speed Roots vacuum pump driven by double motors in synchronization, which solves the problems mentioned in the above background.

[0005] The utility model provides the following technical solutions: The utility model discloses a high-speed Roots vacuum pump driven by double motors in synchronization, which includes a bracket and a Roots pump housing installed on the bracket. A pump cavity is provided inside the Roots pump housing. A group of Roots pump rotors are arranged in the pump cavity. Clamping walls are respectively provided at the left and right ends of the Roots pump housing. Sealing plates are detachably arranged on the clamping walls. A group of mounting holes are provided on the sealing plates. Bearing seats are arranged on the inner walls of the mounting holes. Bearing parts are arranged on the bearing seats. The corresponding Roots pump rotors are connected to the inner walls of the bearing parts. Cover plates are respectively arranged on the left and right sides of the Roots pump housing. Outer sealing ring plates are arranged on the cover plates. The outer sealing ring plates are attached to the outer sides of the Roots pump housing. A group of drive motors are arranged on the right cover plate. The output ends of the corresponding drive motors are connected to the Roots pump rotors. An inlet connecting pipe is arranged above the Roots pump housing. A cleaning and filtering component is arranged in the inlet connecting pipe. An outlet connecting pipe is arranged below the Roots pump housing.

[0006] Furthermore, a sealing ring is arranged on the outer side of the sealing plate, and the sealing ring is attached to the side wall of the clamping wall. <>

[0007] Furthermore, the cleaning and filtering component includes a plurality of support plates uniformly arranged on the inner wall of the inlet connection pipe. Fixing holes are formed in the support plates. A cleaning and filtering cylinder is detachably arranged on the inlet connection pipe. A filter block is detachably arranged in the cleaning and filtering cylinder. A filter plate is detachably arranged on the upper inner side of the cleaning and filtering cylinder.

[0008] Furthermore, a plurality of filter holes are uniformly formed at the bottom of the cleaning and filtering cylinder, and the aperture of the filter holes is smaller than the aperture of the holes in the filter plate.

[0009] Furthermore, a plurality of through holes are uniformly formed in the filter block in the vertical direction.

[0010] Furthermore, a plurality of positioning holes are uniformly formed in the cleaning and filtering cylinder. The plurality of positioning holes are adapted to the fixing holes. A gasket is arranged on the outer side of the upper part of the cleaning and filtering cylinder, and the gasket is attached to the inner wall of the inlet connection pipe.

[0011] Compared with the prior art, the present utility model has the following beneficial effects:

[0012] In the present utility model, a group of Roots pump rotors are inserted into the pump chamber. Sealing plates are installed on the left and right clamping walls of the Roots pump housing, and the corresponding bearing parts on the sealing plates are installed with the Roots pump rotors. The sealing rings on the outer sides of the sealing plates are attached to the side walls of the clamping walls, improving the sealing performance of the connection between the sealing plates and the clamping walls. Cover plates are respectively installed on the left and right sides of the Roots pump housing, and the outer sealing ring plates on the cover plates are attached to the outer sides of the Roots pump housing, improving the sealing performance of the installation of the Roots pump housing.

[0013] Through the structural arrangement of the cleaning and filtering component, impurities are prevented from entering the interior of the pump chamber, so that the Roots pump rotors are worn, thereby affecting the service life of the Roots pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a three-dimensional structure diagram of the present utility model;

[0015] Figure 2 is a structural schematic diagram of the support, the Roots pump housing, and the Roots pump rotors;

[0016] Figure 3 is a structural schematic diagram of the sealing plate and the cover plate;

[0017] Figure 4 is a structural schematic diagram of the cleaning and filtering component.

[0018] In the figure: 1, support; 2, Roots pump housing; 3, pump chamber; 4, Roots pump rotors; 5, clamping wall; 6, sealing plate; 7, mounting hole; 8, bearing part; 9, cover plate; 10, outer sealing ring plate; 11, drive motor; 12, inlet connection pipe; 13, outlet connection pipe; 14, sealing ring; 15, support plate; 16, cleaning and filtering cylinder; 17, filter block; 18, filter plate; 19, gasket. Detailed implementation mode

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0020] Please refer to Figures 1-4 A high-speed Roots vacuum pump using dual-motor synchronous drive in this embodiment includes a bracket 1 and a Roots pump housing 2 installed on the bracket 1. The Roots pump housing 2 is made of fine steel, and an anti-corrosion coating is applied on the Roots pump housing 2. A pump chamber 3 is opened inside the Roots pump housing 2, and a group of Roots pump rotors 4 are arranged in the pump chamber 3. The Roots pump rotors 4 are made of galvanized fine steel, which improves the service life of the Roots pump rotors 4. Clamping walls 5 are respectively opened at the left and right ends of the Roots pump housing 2, and sealing plates 6 are detachably arranged on the clamping walls 5. A group of mounting holes 7 are opened on the sealing plates 6, bearing seats are arranged on the inner walls of the mounting holes 7, and bearing parts 8 are arranged on the bearing seats. The corresponding Roots pump rotors 4 are connected to the inner walls of the bearing parts 8. Cover plates 9 are respectively arranged on the left and right sides of the Roots pump housing 2, an outer sealing ring plate 10 is arranged on the cover plates 9, and the outer sealing ring plate 10 is attached to the outside of the Roots pump housing 2, which is convenient for users to assemble the Roots vacuum pump and can improve the sealing performance of the installation of the Roots pump housing. A group of drive motors 11 are arranged on the right cover plate 9. The drive motors II are synchronous motors, and the rotation directions of the motors are opposite. The output ends of the corresponding drive motors 11 are connected to the Roots pump rotors 4. An inlet connecting pipe 12 is arranged above the Roots pump housing 2, and a cleaning and filtering component is arranged in the inlet connecting pipe 12. An outlet connecting pipe 13 is arranged below the Roots pump housing 2, and mounting flanges are arranged on the outer ends of the inlet connecting pipe 12 and the outlet connecting pipe 13, which is convenient for connecting external pipe components.

[0021] As Figure 3 shown, a sealing ring 14 is arranged on the outer side of the sealing plate 6, and the sealing ring 14 is attached to the side wall of the clamping wall 5. The sealing ring 14 is made of nitrile rubber, so that the sealing ring 14 has good wear resistance and anti-aging performance, and the sealing performance of the connection between the sealing plate 6 and the clamping wall 5 is improved through the sealing ring 14.

[0022] As Figure 1 、 4As shown in the figure, the cleaning and filtering component includes a plurality of support plates 15 evenly arranged on the inner wall of the inlet connection pipe 12. Fixing holes are formed in the support plates 15. A cleaning and filtering cylinder 16 is detachably arranged on the inlet connection pipe 12. A filter block 17 is detachably arranged in the cleaning and filtering cylinder 16. A filter plate 18 is detachably arranged on the upper inner side of the cleaning and filtering cylinder 16. The cleaning and filtering cylinder 16 and the filter plate 18 are made of stainless steel material, and the filter block 17 is made of activated carbon. By externally connecting pipe fittings to the inlet connection pipe 12, impurities in the incoming air are filtered by the cleaning and filtering component, preventing the impurities from entering the interior of the pump chamber 3 and causing wear to the Roots pump rotor 4, thereby affecting the service life of the Roots pump.

[0023] As Figure 1 , 4 shown in the figure, a plurality of filter holes are evenly formed at the bottom of the cleaning and filtering cylinder 16. The aperture of the filter holes is smaller than the aperture of the holes in the filter plate 18, enabling the air entering the pump chamber 3 to be filtered in stages.

[0024] As Figure 1 shown in the figure, a plurality of through holes are evenly formed in the filter block 17 in the vertical direction, effectively filtering impurities in the air.

[0025] As Figure 1 , 4 shown in the figure, a plurality of positioning holes are evenly formed in the cleaning and filtering cylinder 16. The plurality of positioning holes are adapted to the fixing holes. A gasket 19 is arranged on the outer side of the upper part of the cleaning and filtering cylinder 16. The gasket 19 is in contact with the inner wall of the inlet connection pipe 12. The corresponding positioning holes and fixing holes are installed by screws, enabling the cleaning and filtering cylinder 16 to be stably installed in the inlet connection pipe 12. The gasket 19 is made of silica gel material. By the gasket 19 being in contact with the inner wall of the inlet connection pipe 12, it is prevented that air directly enters the pump chamber 3 through the gap between the cleaning and filtering cylinder 16 and the inlet connection pipe 12.

[0026] In the specific implementation of this embodiment, the user inserts a set of Roots pump rotors 4 into the pump chamber 3, installs sealing plates 6 on the left and right clamping walls 5 of the Roots pump housing 2, and installs the corresponding bearing parts 8 on the sealing plates 6 with the Roots pump rotors 4. The sealing rings 14 on the outer sides of the sealing plates 6 are attached to the side walls of the clamping walls 5 to improve the sealing performance of the connection between the sealing plates 6 and the clamping walls 5. Cover plates 9 are respectively installed on the left and right sides of the Roots pump housing 2, and the outer sealing ring plates 10 on the cover plates 9 are attached to the outside of the Roots pump housing 2 to improve the sealing performance of the installation of the Roots pump housing. Through the structural setting of the cleaning and filtering assembly, impurities are prevented from entering the inside of the pump chamber 3, which may cause wear of the Roots pump rotors 4 and thus affect the service life of the Roots pump. The corresponding positioning holes and fixing holes are installed by screws, so that the cleaning and filtering cylinder 16 can be stably installed in the inlet pipe 12. The washer 19 is attached to the inner wall of the inlet pipe 12 to prevent air from directly entering the pump chamber 3 through the gap between the cleaning and filtering cylinder 16 and the inlet pipe 12. A filter block 17 is detachably arranged in the cleaning and filtering cylinder 16, a filter plate 18 is detachably arranged on the upper part of the inner side of the cleaning and filtering cylinder 16, and a plurality of filter holes are formed at the bottom of the cleaning and filtering cylinder 16, so as to perform hierarchical filtration on the air entering the pump chamber 3.

[0027] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-speed Roots vacuum pump with dual-motor synchronous drive, comprising a bracket (1) and a Roots pump housing (2) mounted on the bracket (1), characterized in that: The interior of the Roots pump housing (2) is provided with a pump chamber (3). A set of Roots pump rotors (4) is arranged in the pump chamber (3). Clamping walls (5) are respectively arranged at the left and right ends of the Roots pump housing (2). A sealing plate (x) is detachably arranged on the clamping wall (5). A set of mounting holes (7) is arranged on the sealing plate (6). A bearing seat is arranged on the inner wall of the mounting hole (7). A bearing member (8) is arranged on the bearing seat. The corresponding Roots pump rotor (4) is connected to the inner wall of the bearing member (8). Cover plates (9) are respectively arranged on the left and right sides of the Roots pump housing (2). An outer sealing ring plate (10) is arranged on the cover plate (9). The outer sealing ring plate (10) is attached to the outer side of the Roots pump housing (2). A set of drive motors (11) is arranged on the right cover plate (9). The output end of the corresponding drive motor (11) is connected to the Roots pump rotor (4). An inlet connection pipe (12) is arranged above the Roots pump housing (2). A cleaning and filtering assembly is arranged in the inlet connection pipe (12). An outlet connection pipe (13) is arranged below the Roots pump housing (2).

2. The high-speed Roots vacuum pump with double-motor synchronous drive according to claim 1, characterized in that: A sealing ring (14) is arranged on the outer side of the sealing plate (6). The sealing ring (14) is attached to the side wall of the clamping wall (5).

3. The high-speed Roots vacuum pump with dual-motor synchronous drive according to claim 1, characterized in that: The cleaning and filtering assembly includes a plurality of support plates (15) uniformly arranged on the inner wall of the inlet connection pipe (12). Fixing holes are arranged on the support plates (15). A cleaning and filtering cylinder (16) is detachably arranged on the inlet connection pipe (12). A filter block (17) is detachably arranged in the cleaning and filtering cylinder (16). A filter plate (18) is detachably arranged on the upper part inside the cleaning and filtering cylinder (16).

4. A high-speed Roots vacuum pump with dual-motor synchronous drive according to claim 3, characterized in that: A plurality of filter holes are uniformly arranged at the bottom of the cleaning and filtering cylinder (16). The aperture of the filter holes is smaller than the aperture of the holes of the filter plate (18).

5. The high-speed Roots vacuum pump with dual-motor synchronous drive according to claim 4, wherein: A plurality of through holes are uniformly arranged in the vertical direction of the filter block (17).

6. The high-speed Roots vacuum pump with double-motor synchronous drive according to claim 5, characterized in that: A plurality of positioning holes are uniformly arranged on the cleaning and filtering cylinder (16). The plurality of positioning holes are adapted to the fixing holes. A washer (19) is arranged on the outer side of the upper part of the cleaning and filtering cylinder (16). The washer (19) is attached to the inner wall of the inlet connection pipe (12).

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