CN216894898U - Roots vacuum pump with composite rotor structure - Google Patents
Roots vacuum pump with composite rotor structure Download PDFInfo
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- CN216894898U CN216894898U CN202220403737.8U CN202220403737U CN216894898U CN 216894898 U CN216894898 U CN 216894898U CN 202220403737 U CN202220403737 U CN 202220403737U CN 216894898 U CN216894898 U CN 216894898U
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Abstract
The utility model discloses a Roots vacuum pump with a composite rotor structure, which is characterized by comprising the following components: the pump body is provided with a shell, a front end cover and a rear end plate which are positioned at two ends of the shell, and a gear box arranged on the front end cover; the rotor set is provided with a driven rotor and a driving rotor, the Roots blade of the driving rotor and the Roots blade of the driven rotor are positioned in the shell, and rotating shafts at two ends of the driving rotor and rotating shafts at two ends of the driven rotor are respectively arranged on the front end cover and the rear end plate; the gear set is positioned in the gear box, is arranged on the rotating shaft parts of the driving rotor and the driven rotor, and is linked with the driving rotor and the driven rotor to synchronously rotate; and the motor is assembled on the gear box, and the driving rotor is arranged towards the rotating shaft part of the motor in an extending manner, extends into the motor and is connected with the rotating part in the motor. The motor output shaft and the driving rotor are of an integrated structure, so that the transmission efficiency and the transmission stability can be improved.
Description
Technical Field
The utility model relates to the technical field of vacuum pumps, in particular to a roots vacuum pump with a composite rotor structure.
Background
The Roots vacuum pump is a variable displacement vacuum pump in which two blade-shaped rotors rotating synchronously in opposite directions are arranged in the pump, and small gaps are formed among the rotors and between the rotors and the inner wall of a pump shell so as not to be in contact with each other. The Roots vacuum pump is tested for long-term operation on devices such as petroleum, chemical engineering, plastics, pesticides, dynamic balance of a steam turbine rotor, aerospace space simulation and the like, so that the Roots vacuum pump is widely popularized and applied in China. And can be widely used in petroleum, chemical, metallurgy, textile and other industries.
The main structure of the Roots vacuum pump comprises a shell, a rotor set arranged in the shell, a gear box arranged at one end of the shell, a gear set arranged in the gear box and used for enabling the rotor set to synchronously rotate, and a motor which is arranged at the outer end of the gear box and connected with one of the rotors to drive the rotor set to rotate. In the prior art, an output shaft of a motor is connected with a rotating shaft part of a driving rotor in a rotor set through a coupler so as to drive the rotor set to rotate. The structure has the problems of complex structure, low transmission efficiency and easy shaft breakage, so that the improvement space exists.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model provides the Roots vacuum pump with the composite rotor structure, the motor output shaft and the driving rotor are of an integrated structure, and the transmission efficiency and the transmission stability can be improved.
In order to achieve the purpose, the utility model provides the following technical scheme:
a roots vacuum pump with a composite rotor structure, characterized by comprising:
the pump body is provided with a shell, a front end cover and a rear end plate which are positioned at two ends of the shell, and a gear box which is arranged on the front end cover;
the rotor set is provided with a driven rotor and a driving rotor, the Roots blade of the driving rotor and the Roots blade of the driven rotor are positioned in the shell, and rotating shafts at two ends of the driving rotor and rotating shafts at two ends of the driven rotor are respectively arranged on the front end cover and the rear end plate;
the gear set is positioned in the gear box, is arranged on the rotating shaft parts of the driving rotor and the driven rotor, and is linked with the driving rotor and the driven rotor to synchronously rotate;
and the motor is assembled on the gear box, and the driving rotor is arranged towards the rotating shaft part of the motor in an elongated manner, extends into the motor and is connected with the rotating part in the motor.
Preferably, the rear end plate is integrally formed on the rear end of the housing, and the rear end plate is provided with a rear mounting groove for the rotating shaft to be assembled.
Preferably, the front end cover is assembled at the front end of the shell, and the front end cover is provided with two front mounting grooves for the rotating shaft part to be assembled.
Preferably, a first sealing ring is arranged between the shell and the front end cover, a second sealing ring is arranged between the gear box and the front end cover, and a third sealing ring is arranged between the motor shell of the motor and the gear box.
Preferably, the rotating shaft portion is fitted with a plurality of oil slingers.
The utility model has the advantages that: the output shaft of the motor and the rotating shaft part of the driving rotor are of an integrated structure, so that the installation of the coupler is saved, the assembly structure can be simplified, and the transmission efficiency and the transmission stability between the motor and the rotor set can be improved.
Drawings
FIG. 1 is a schematic view of a Roots vacuum pump with a composite rotor structure provided in the present embodiment;
FIG. 2 is an exploded view of a Roots vacuum pump having a composite rotor structure according to the present embodiment;
FIG. 3 is a sectional view of a Roots vacuum pump having a composite rotor structure according to the present embodiment;
fig. 4 is a schematic view of the driving rotor provided in this embodiment.
Detailed Description
The roots vacuum pump having a composite rotor structure according to the present invention will be further described with reference to fig. 1 to 4.
A roots vacuum pump with a composite rotor structure, characterized by comprising: a pump body having a housing 4, a front end cover 3 and a rear end plate 41 at both ends of the housing 4, and a gear case 2 mounted on the front end cover 3; a rotor group having a driven rotor and a driving rotor 6, the driving rotor 6 and the driven rotor each including a roots blade 61 and a shaft portion 62 formed on both ends of the roots blade 61; the Roots blade 61 of the driving rotor 6 and the Roots blade of the driven rotor are positioned in the shell 4 and are matched with each other after rotation to achieve the air extraction effect; the two-end rotating shaft part 62 of the driving rotor 6 and the two-end rotating shaft part of the driven rotor are respectively arranged on the front end cover 3 and the rear end plate 41 through bearings 32 and 35; the gear set 7 is positioned in the gear box 2, is arranged on the rotating shaft part 62 of the driving rotor 6 and the driven rotor, and is linked with the driving rotor 6 and the driven rotor to synchronously rotate; and the motor 1, the motor 1 is assembled on the gear box 2, the driving rotor 6 is lengthened 63 towards the rotating shaft part 62 of the motor 1 and extends into the motor 1 to be connected with the rotating part 11 in the motor 1, and the rotating part 11 in the motor 1 is a component which is matched with the stator to rotate.
Specifically, as shown in fig. 2, the rear end plate 41 is integrally formed on the rear end of the housing 4, and the rear end plate 41 has a rear mounting groove 34 for mounting the rotating shaft 62. Namely, a rear groove wall 411 protruding from the rear end plate 41 is provided on a side of the rear end plate 41 facing away from the housing 4, the rear groove wall 411 encloses the two rear mounting grooves 34 on a side surface of the rear end plate 41, and a rear mounting hole 36 corresponding to the two rear mounting grooves 34 is provided on the rear end plate 41. During assembly, the piston ring sleeve 33 is assembled between the rotating shaft part 62 and the rear mounting hole 36 so as to achieve the sealing effect; a rear bearing sleeve is arranged in the rear mounting groove 34, and a bearing 35 is arranged between the rear bearing sleeve and the rotating shaft part 62; in order to hide the rear end of the pump body, a rear end cover 5 that hides the rear groove wall is assembled at the rear end of the pump body by bolts. A fourth seal ring is provided between the rear end cap 5 and the rear end plate 41.
The front cover 3 is assembled to the front end of the housing 4, and the front cover 3 has two front mounting grooves 31 for the rotation shaft 62 to be mounted. Similarly, the side of the front end cover 3 facing away from the housing 4 has a front groove wall protruding from the surface of the front end cover, the front groove wall encloses to form two front mounting grooves 31, and the front end plate 3 has front mounting holes corresponding to the two front mounting grooves 31. During assembly, a piston ring sleeve 33 is arranged between the rotating shaft part 62 and the front mounting hole 37, so that a sealing effect is achieved. A front bearing housing is fitted in the front mounting groove 31, and a bearing 32 is provided between the front bearing housing and the rotating shaft portion 62.
In order to ensure the sealing between the front end cap 3 and the housing 4, a first seal ring is provided between the front end cap 3 and the housing 4.
The gear box 2 is fixed on the side of the front end plate 3 opposite to the shell 4 through bolts, the rotating shaft part 62 of the driving rotor 6 and the driven rotor extends into the gear box 2, and the gear set 7 which is meshed with each other is installed, so that the driving rotor 6 and the driven rotor synchronously rotate.
The casing of motor 1 has been installed on the side of gear box 2 back to the front end housing, and the pivot portion 62 extension of initiative rotor passes gear box 2 back to the side of front end housing 3 and enters into motor 1 after setting up, links up with the inside commentaries on classics portion 11 of motor 1 to become the output shaft of motor 1 simultaneously, saved the setting of shaft coupling.
In order to improve the sealing performance of the present embodiment, a second sealing ring is disposed between the gear case 2 and the front end cover, and a third sealing ring is disposed between the motor casing and the gear case 2.
A plurality of oil slingers are fitted over the rotating shaft portion 62 to control the amount of oil.
When specifically using, the output shaft of motor 1 and the pivot portion 62 formula structure as an organic whole of initiative rotor 6 have saved the installation of shaft coupling, can simplify assembly structure, can improve transmission efficiency and transmission stability between motor 1 and the rotor group again.
Unless otherwise specified, in the present invention, if there is an orientation or positional relationship indicated by terms of "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the terms describing orientation or positional relationship in the present invention are for illustrative purposes only, and should not be construed as limiting the present patent, specific meanings of the above terms can be understood by those of ordinary skill in the art in light of the specific circumstances in conjunction with the accompanying drawings.
Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are used broadly and encompass, for example, being fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the utility model may occur to those skilled in the art without departing from the principle of the utility model, and are considered to be within the scope of the utility model.
Claims (5)
1. A roots vacuum pump with a composite rotor structure, characterized by comprising:
the pump body is provided with a shell, a front end cover and a rear end plate which are positioned at two ends of the shell, and a gear box which is arranged on the front end cover;
the rotor set is provided with a driven rotor and a driving rotor, the Roots blade of the driving rotor and the Roots blade of the driven rotor are positioned in the shell, and rotating shafts at two ends of the driving rotor and rotating shafts at two ends of the driven rotor are respectively arranged on the front end cover and the rear end plate;
the gear set is positioned in the gear box, is arranged on the rotating shaft parts of the driving rotor and the driven rotor, and is linked with the driving rotor and the driven rotor to synchronously rotate;
and the motor is assembled on the gear box, and the driving rotor is arranged towards the rotating shaft part of the motor in an elongated manner, extends into the motor and is connected with the rotating part in the motor.
2. A roots vacuum pump with composite rotor structure as claimed in claim 1, wherein: the rear end plate is integrally formed at the rear end of the shell, and a rear mounting groove for assembling the rotating shaft part is formed in the rear end plate.
3. A roots vacuum pump with composite rotor structure as claimed in claim 1, wherein: the front end cover is assembled at the front end of the shell, and two front mounting grooves for assembling the rotating shaft part are formed in the front end cover.
4. A roots vacuum pump with composite rotor structure as claimed in claim 1, wherein: a first sealing ring is arranged between the shell and the front end cover, a second sealing ring is arranged between the gear box and the front end cover, and a third sealing ring is arranged between a motor shell of the motor and the gear box.
5. A roots vacuum pump with composite rotor structure as claimed in claim 1, wherein: the rotating shaft part is sleeved with a plurality of oil slingers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220403737.8U CN216894898U (en) | 2022-02-25 | 2022-02-25 | Roots vacuum pump with composite rotor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220403737.8U CN216894898U (en) | 2022-02-25 | 2022-02-25 | Roots vacuum pump with composite rotor structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216894898U true CN216894898U (en) | 2022-07-05 |
Family
ID=82187525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220403737.8U Active CN216894898U (en) | 2022-02-25 | 2022-02-25 | Roots vacuum pump with composite rotor structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216894898U (en) |
-
2022
- 2022-02-25 CN CN202220403737.8U patent/CN216894898U/en active Active
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