CN221257123U - Totally-enclosed Roots blower - Google Patents
Totally-enclosed Roots blower Download PDFInfo
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- CN221257123U CN221257123U CN202323255726.3U CN202323255726U CN221257123U CN 221257123 U CN221257123 U CN 221257123U CN 202323255726 U CN202323255726 U CN 202323255726U CN 221257123 U CN221257123 U CN 221257123U
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- wallboard
- driving
- oil tank
- shaft
- roots blower
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- 238000007789 sealing Methods 0.000 claims description 37
- 238000009434 installation Methods 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000002828 fuel tank Substances 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The utility model provides a totally-enclosed Roots blower, comprising: a housing; the front wallboard and the rear wallboard are respectively arranged at two ends of the shell; the gear box and the auxiliary oil tank are correspondingly arranged on the front wallboard and the rear wallboard; the utility model discloses a driving rotor, which comprises a driving shaft, wherein the driving shaft is arranged on a front wallboard and a rear wallboard, the driving shaft comprises a first end close to the rear wallboard, the first end is positioned in an auxiliary oil tank, and the first end is used for magnetically driving a main shaft connected with a driving machine.
Description
Technical Field
The utility model relates to a Roots blower, in particular to a totally-enclosed Roots blower.
Background
Roots blower is a positive displacement blower which relies on two rotors with parallel axes to each other to rotate to form a change in working chamber volume to deliver gas.
As shown in fig. 1, a conventional Roots blower (hereinafter referred to as a blower) is provided with four shaft end seals a at a driving rotor and a driven rotor, and a shaft extension end seal B is provided at one end of the driving rotor. Under the conventional condition, the shaft end seal and the shaft extension end seal adopt a labyrinth, a piston ring and a framework oil seal, and the fan still has a certain degree of leakage. Therefore, when certain special media are conveyed, the mechanical seal and the dry gas seal are adopted, and the zero-leakage conveying can be realized by matching with an additional seal auxiliary system. The sealing auxiliary system is introduced, so that the cost is increased, and the sealing auxiliary system is difficult to realize and has low reliability under the working condition of high-pressure conveying (more than 1 MPa).
Therefore, the application provides a novel Roots blower, which solves the defects of high sealing cost, poor sealing effect and the like of the conventional blower in the high-pressure conveying of special media.
Disclosure of utility model
The utility model provides a totally-enclosed Roots blower, which aims to solve the problem that the blower is easy to leak out of the blower from a shaft end when conveying high-pressure medium.
In order to achieve the above object, an embodiment of the present utility model provides a totally enclosed Roots blower, comprising:
a housing;
The front wallboard and the rear wallboard are respectively arranged at two ends of the shell;
The gear box and the auxiliary oil tank are correspondingly arranged on the front wallboard and the rear wallboard;
The driving rotor comprises a driving shaft, the driving shaft is arranged on the front wallboard and the rear wallboard, the driving shaft comprises a first end close to the rear wallboard, the first end is positioned in the auxiliary oil tank, and the first end is used for being magnetically transmitted and connected with a main shaft of a driving machine.
Preferably, the first end penetrates out of the auxiliary oil tank, and a sealing cover is arranged on the auxiliary oil tank and covers the first end.
Preferably, the front wallboard and the rear wallboard have the same structure, the front wallboard is a board body, a working area protruding along the thickness direction of the board body is formed at one side of the board body, an installation area is formed outside the working area, the driving rotor is arranged in the working area, and the driven rotor is also arranged in the working area;
the auxiliary oil tank and the gear box are arranged in the installation areas of the front wallboard and the rear wallboard.
Preferably, first bearings are arranged at two ends of the driving shaft, and first bearing mounting holes are arranged on working areas of the front wallboard and the rear wallboard;
The driven rotor comprises a driven shaft, second bearings are arranged at two ends of the driven shaft, and second bearing mounting holes are arranged on working areas of the front wallboard and the rear wallboard.
Preferably, first sealing elements are arranged at two ends of the driving shaft, the two first sealing elements are positioned between the two first bearings, and first sealing element mounting holes are arranged in working areas of the front wallboard and the rear wallboard;
The two ends of the driven shaft are provided with second sealing elements, two second sealing elements are positioned between two second bearings, and second sealing element mounting holes are formed in working areas of the front wallboard and the rear wallboard.
Preferably, the sealing cover and the auxiliary oil tank are sealed.
The scheme of the utility model has the following beneficial effects:
According to the application, the two ends of the driving shaft are provided with the auxiliary oil tank and the gear box, so that the shell, the gear box and the auxiliary oil tank form a sealed cavity, the driving shaft is magnetically connected with the main shaft of the driving machine to replace the existing shaft extension end seal, the dynamic seal of the driving shaft and the auxiliary oil tank is changed into the static seal with better sealing effect, and the leakage of special media is effectively prevented.
Additional features and advantages of the utility model will be set forth in the detailed description which follows.
Drawings
FIG. 1 is a schematic diagram of a prior art blower;
FIG. 2 is a schematic illustration of the present utility model;
FIG. 3 is an enlarged view of the portion X in FIG. 2;
FIG. 4 is a schematic view of a prior art back wall panel;
Fig. 5 is a schematic view of a back wall panel of the present utility model.
[ Reference numerals description ]
1-Casing, 2-front wall board, 3-rear wall board, 31-working area, 32-installation area, 4-gear box,
The device comprises a 5-auxiliary oil tank, a 6-driving rotor, a 61-driving shaft, a 62-first bearing, a 63-first sealing element, a 64-first gear, a 7-sealing cover, an 8-driven rotor, an 81-driven shaft, an 82-second bearing, an 83-second sealing element, an 84-second gear, a 01-reinforcing plate, a 02-large end face and a 03-small end face;
a-shaft end sealing, B-shaft extending end sealing and a main shaft of a C-driving machine.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
As shown in fig. 2, 3 and 5, the embodiment of the utility model provides a totally enclosed Roots blower, which comprises a casing 1, wherein the casing 1 is a cylinder, one end of the casing 1 is provided with a front wall plate 2, the other end is provided with a rear wall plate 3, a gear box 4 is arranged on the front wall plate 2, the gear box 4 is arranged on one side of the front wall plate 2 far away from the casing 1, a secondary oil tank 5 is arranged on the rear wall plate 3, and the secondary oil tank 5 is arranged on one side of the rear wall plate 3 far away from the casing 1.
A driving rotor 6 is further arranged in the casing 1, the driving rotor 6 comprises a driving shaft 61, and the driving shaft 61 is rotatably arranged on the front wallboard 2 and the rear wallboard 3. The driving shaft 61 comprises a first end near the rear wall plate 3 and a second end near the front wall plate 2, wherein the second end extends into the gear box 4 through the front wall plate 2, and is provided with a first gear 64 at the second end, the first end extends into the auxiliary oil tank 5 after passing through the rear wall plate 3, but does not extend out of the auxiliary oil tank 5, and the first end is used for magnetically driving and connecting the main shaft C of the driving machine.
A permanent magnet is arranged on the first end and/or the main shaft C of the driving machine for magnetic transmission connection.
In the application, as the first end of the driving shaft 61 does not penetrate out of the auxiliary oil tank 5, the shaft extending end seal is cancelled between the main shaft and the auxiliary oil tank 5, the machine shell 1 and the gear box 4 form an integral cavity, special media cannot overflow in the cavity, and meanwhile, the first end of the main shaft is connected with the main shaft C of the driving machine through magnetic force, so that the power of the driving machine can be transmitted to the driving shaft 61, the integral tightness of the cavity can be maintained, and the dissipation of the special media is effectively avoided.
In some embodiments of the present application, the first end of the drive shaft 61 extends out of the secondary fuel tank 5, and a seal cover 7 is provided on the secondary fuel tank 5, the seal cover 7 covering the first end within the seal cover 7.
In the present embodiment, the purpose of the drive shaft 61 passing out of the auxiliary tank 5 is to better magnetically drive the main shaft C of the drive machine. Referring to fig. 3, the end of the main shaft C of the driving machine may be provided with a concave structure, which may be a permanent magnet, or a substance that generates magnetic force with the permanent magnet, such as iron, an alloy containing iron, or the like, so that the first end located in the sealing cover 7 is located in the concave structure, thereby effectively performing magnetic force transmission.
Preferably, the sealing cover 7 is made of a material that does not interfere with the magnetic field, such as rubber or the like.
Preferably, the sealing process is performed between the seal cover 7 and the auxiliary fuel tank 5.
In the embodiment, the dynamic seal of the shaft extension end is converted into the static seal of the seal cover 7 and the auxiliary oil tank 5, and the seal has good tightness under the working conditions of normal pressure and high pressure.
In some embodiments of the application, the front wall panel 2, the rear wall panel 3 are also modified. The front wallboard 2 and the rear wallboard 3 have the same structure, the front wallboard 2 is taken as an example, the front wallboard 2 is taken as a board body, a working area 31 is formed on one surface of the front wallboard 2 far away from the shell 1, the working area 31 is positioned at the center of the front wallboard 2 and protrudes towards one surface far away from the shell 1, the periphery of the working area 31 is a mounting area 32, and the mounting area 32 is the board surface of the front wallboard 2.
When the gear box 4 is installed, the gear box 4 is buckled in the installation area 32, and the working area 31 is arranged in the gear box 4, and because the working area 31 is convex, the gear box can be used for installing the driving rotor 6 and the driven rotor 8, and cannot influence the installation structure of the existing driving rotor 6 and the driven rotor 8, and the gear box 4 is directly installed in the installation area 32, so that the influence caused by pressure difference can be effectively avoided.
Referring to the conventional rear wall panel 3 shown in fig. 1 and 4, the conventional rear wall panel 3 includes a plate body in which a reinforcing plate 01 is provided in a thickness direction, another plate body is provided on the reinforcing plate 01, and the conventional rear wall panel 3 is respectively constituted by the foregoing two plate bodies into a large end face 02 and a small end face 03, wherein the large end face 02 is used for mounting the casing 1, and the small end face 03 is used for mounting the gear case 4. When the fan works, as the dynamic seal is arranged between the driving rotor 6, the driven rotor 8 and the rear wall plate 3, a high-pressure medium in the casing 1 enters the gear box 4 through a gap of the dynamic seal, so that the pressure P 2 in the gear box 4 is gradually the same as the pressure P 1 in the casing 1, the pressure P 2 is used for generating pressure on the inner side of the reinforcing plate 01, and meanwhile, the other side of the reinforcing plate 01 is subjected to the action of the atmospheric pressure P 0, that is, when the supercharging effect of the fan is stronger, the pressure difference of the reinforcing plate 01 is larger (the pressure difference P 2-P0), is easier to lead the reinforcing plate 01 to bend and deform, so that a large end face 02 connected with the reinforcing plate 01 deforms, and the installation gap of the dynamic seal is enlarged, thereby accelerating the deformation speed of the reinforcing plate 01.
The rear wall panel 3 provided in this embodiment eliminates the small end face 03 and the reinforcing plate 01, and retains the large end face 02, and the large end face 02 is not affected by the atmospheric pressure P 0. Even if a gap exists between the gear box 4 and the casing 1, the pressure P 2 in the gear box 4 is equal to the pressure P 1 in the casing 1 along with the stable operation of the fan, so that the pressure difference of the rear wall plate 3 can not be generated, and the structural stability of the rear wall plate 3 can be effectively maintained. Therefore, the rear wall plate 3 provided by the application is not used as a bearing component any more and mainly plays a role in supporting the driving rotor 6 and the driven rotor 8.
The two ends of the driving shaft 61 are provided with first bearings 62, and the working areas 31 of the front wall plate 2 and the rear wall plate 3 are provided with first bearing mounting holes. The driven rotor 8 comprises a driven shaft 81, two ends of the driven shaft 81 are provided with second bearings 82, and the working areas 31 of the front wallboard 2 and the rear wallboard 3 are provided with second bearing mounting holes.
In the present embodiment, the first bearing 62 is provided in the first bearing mounting hole, and the second bearing 82 is provided in the second bearing mounting hole so that the driving rotor 6 and the driven rotor 8 can rotate in the casing 1.
Further, the two ends of the driving shaft 61 are further provided with first sealing elements 63, the two first sealing elements 63 are located between the two first bearings 62, and first sealing element mounting holes are formed in the working areas 31 of the front wall plate 2 and the rear wall plate 3. The two ends of the driven shaft 81 are provided with second sealing elements 83, the second sealing elements 83 are positioned between the two second bearings 82, and second sealing element mounting holes are arranged in the working areas 31 of the front wall plate 2 and the rear wall plate 3.
The driven shaft 81 is also provided with a second gear 84 at one end thereof located in the gear box 4, and the first gear 64 and the second gear 84 are meshed for transmission in the gear box 4.
It should be understood that the driving rotor 6 and the driven rotor 8 should further include a driving impeller provided on the driving shaft 61 and a driven impeller provided on the driven shaft 81.
It should be understood that the casing 1 is further provided with an air inlet and an air outlet.
While the foregoing is directed to the preferred embodiments of the present utility model, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present utility model, and such modifications and adaptations are intended to be comprehended within the scope of the present utility model.
Claims (6)
1. A totally enclosed roots blower comprising:
A housing (1);
The front wallboard (2) and the rear wallboard (3) are respectively arranged at two ends of the shell (1);
The gear box (4) and the auxiliary oil tank (5) are correspondingly arranged on the front wallboard (2) and the rear wallboard (3);
Initiative rotor (6), including driving shaft (61), driving shaft (61) set up on preceding wallboard (2) and back wallboard (3), its characterized in that, driving shaft (61) are including being close to the first end of back wallboard (3), first end is located in bellytank (5), first end is used for magnetic transmission to connect main shaft (C) of driving machine.
2. The totally enclosed Roots blower according to claim 1, wherein: the first end penetrates out of the auxiliary oil tank (5), a sealing cover (7) is arranged on the auxiliary oil tank (5), and the sealing cover (7) is covered outside the first end.
3. The totally enclosed Roots blower according to claim 1, wherein: the front wallboard (2) and the rear wallboard (3) have the same structure, the front wallboard (2) is a board body, a working area (31) protruding in the thickness direction of the board body is formed on one side of the board body, a mounting area (32) is formed outside the working area (31), the driving rotor (6) is arranged in the working area (31), and a driven rotor (8) is further arranged in the working area (31);
The auxiliary oil tank (5) and the gear box (4) are correspondingly arranged in the installation areas (32) of the front wallboard (2) and the rear wallboard (3).
4. A totally enclosed Roots blower according to claim 3, wherein: the two ends of the driving shaft (61) are provided with first bearings (62), and the working areas (31) of the front wallboard (2) and the rear wallboard (3) are provided with first bearing mounting holes;
the driven rotor (8) comprises a driven shaft (81), second bearings (82) are arranged at two ends of the driven shaft (81), and second bearing mounting holes are formed in the working areas (31) of the front wall plate (2) and the rear wall plate (3).
5. The totally enclosed Roots blower according to claim 4, wherein: the two ends of the driving shaft (61) are provided with first sealing elements (63), the two first sealing elements (63) are positioned between the two first bearings (62), and first sealing element mounting holes are formed in the working areas (31) of the front wallboard (2) and the rear wallboard (3);
Two ends of the driven shaft (81) are provided with second sealing elements (83), two second sealing elements (83) are positioned between two second bearings (82), and second sealing element mounting holes are formed in the working areas (31) of the front wallboard (2) and the rear wallboard (3).
6. The totally enclosed Roots blower according to claim 2, wherein: and sealing treatment is carried out between the sealing cover (7) and the auxiliary oil tank (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323255726.3U CN221257123U (en) | 2023-11-30 | 2023-11-30 | Totally-enclosed Roots blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323255726.3U CN221257123U (en) | 2023-11-30 | 2023-11-30 | Totally-enclosed Roots blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221257123U true CN221257123U (en) | 2024-07-02 |
Family
ID=91657445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323255726.3U Active CN221257123U (en) | 2023-11-30 | 2023-11-30 | Totally-enclosed Roots blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221257123U (en) |
-
2023
- 2023-11-30 CN CN202323255726.3U patent/CN221257123U/en active Active
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