CN202851357U - Roots vacuum pump - Google Patents
Roots vacuum pump Download PDFInfo
- Publication number
- CN202851357U CN202851357U CN 201220126073 CN201220126073U CN202851357U CN 202851357 U CN202851357 U CN 202851357U CN 201220126073 CN201220126073 CN 201220126073 CN 201220126073 U CN201220126073 U CN 201220126073U CN 202851357 U CN202851357 U CN 202851357U
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- China
- Prior art keywords
- pump
- gear
- housing
- driven
- shaft
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses a Roots vacuum pump and belongs to displacement pumps. The Roots vacuum pump is used for solving the problem that the existing Roots pump is not suitable for being mounted in an oiling machine. According to the Roots vacuum pump, a pump body and a gearbox body are assembled together in a side-by-side manner, a pump cover is assembled at one end of the pump body, a gearbox cover is assembled at one end of the gearbox body, a driving shaft and a driven shaft are assembled in the gearbox body through bearings and extend into the pump body, a driving gear and a driven gear are located in the gearbox body and respectively assembled on the driving shaft and the driven shaft, a driving rotor and a driven rotor are located in the pump body and respectively assembled on the driving shaft and the driven shaft, and a motor connecting disc is assembled on the gearbox cover. The Roots vacuum pump has the advantages that the structure is compact, and the volume is small, so that the Roots vacuum pump can be conveniently mounted in the oiling machine; the two rotors in the pump are intermeshed, but not in contact, and are in dry running, the inside of the pump does not need lubricating and cooling media, the situation that friction sparks can not be generated is guaranteed, and thus, the explosion-proof performance is good; and the rotors in the pump adopt three-blade structures, so that the vibration and noise can be effectively reduced.
Description
Technical field
The utility model belongs to displacement pump, and specifically gas station oil gas reclaims with three leaf Roots pumps.
Background technique
At present, domestic Investigation of Petroleum Vapor Recovery Technology is more and more paid attention to, and the gas station is the main place that Investigation of Petroleum Vapor Recovery Technology is used.Gas station oil gas reclaims with three leaf Roots pumps and reclaims the oil gas that volatilizes in the automotive oil tank for the automobile fuel filler process.Pump is installed in the oilling machine, cube little, and explosion-proof performance is good, and vibration and noise are little.
Roots pump is a kind of displacement pump, relies on interior two of pump to intermesh but the variation of discontiguous rotor generation volume, thereby pumps gasoline gas.But existing Roots pump volume is large, pump domestic demand lubrication cooling medium, explosion-proof performance are poor, vibration and noise are large, is unsuitable for being installed in the oilling machine.
The model utility content
The technical assignment of the technical problems to be solved in the utility model and proposition is to overcome existing Roots pump to be unsuitable for being installed in the interior defective of oilling machine, and a kind of Roots pump of being convenient to be installed in the oilling machine is provided.
For achieving the above object, the utility model comprises the pump housing, pump cover, the power rotor that matches and driven rotor, gear housing, gear box cover, the driving gear that is meshed and driven gear, driving shaft, driven shaft, the motor tie-plate, the described pump housing is provided with import and outlet, it is characterized in that: the described pump housing and described gear housing are assembled together side by side, described pump cover is assemblied in the pump housing one end, described gear box cover is assemblied in gear housing one end, described driving shaft, the driven shaft warp beam takes up and fits in the described gear housing and extend in the described pump housing, described driving gear, driven gear is positioned at described gear housing and is assemblied in respectively driving shaft, on the driven shaft, described power rotor and driven rotor are positioned at the described pump housing and are assemblied in respectively driving shaft, on the driven shaft, described motor tie-plate is assemblied on the gear box cover.
As the optimization technique means, be equipped with the shaft seal with described gear housing inner chamber and the isolation of pump housing inner chamber on described driving shaft, the driven shaft.
As the optimization technique means, described shaft seal is positioned on the described gear housing.
As the optimization technique means, described pump cover, the pump housing, gear housing, gear box cover are formed by the bolt serial connection.
As the optimization technique means, between described pump cover and the pump housing, between the pump housing and the gear housing, be equipped with seal ring between gear housing and the gear box cover.
As the optimization technique means, described power rotor and driven rotor are trilobed structure.
As the optimization technique means, described power rotor intermeshes with driven rotor but does not contact mutually.
As the optimization technique means, described bearing for assembling driving shaft, driven shaft lays respectively at the both sides of driving gear, driven gear.
The beneficial effects of the utility model are: compact structure, volume is small and exquisite, is easily installed in the oilling machine.Interior two rotors of pump intermesh but do not contact, and dry-running does not need lubrication cooling medium in the pump, guarantee can not produce friction spark, and explosion-proof performance is good.The pump internal rotor adopts trilobed structure, can effectively reduce vibration and noise.
Description of drawings
Fig. 1 is a kind of structural representation of the present utility model;
Fig. 2 is that A-A among Fig. 1 is to sectional view;
Number in the figure explanation: the 1-pump housing, 2-power rotor, 3-pump cover, the 4-driving shaft, 5-driven rotor, 6-driven shaft, 7A, 7B-shaft seal, 8A, 8B, 8C, 8D-bearing, 9-gear housing, the 10-driven gear, 11-gear box cover, 12-driving gear, 13-motor tie-plate, 14-motor, 15-import, the 16-outlet, 17A, 17B-bolt, 18A, 18B, 18C-seal ring.
Embodiment
Below in conjunction with Figure of description the utility model is described further.
Roots pump of the present utility model, such as Fig. 1, shown in 2, it comprises the pump housing 1, pump cover 3, the power rotor 2 that matches and driven rotor 5, gear housing 9, gear box cover 11, the driving gear 12 that is meshed and driven gear 10, driving shaft 4, driven shaft 6, motor tie-plate 13, the pump housing 1 is provided with import 15 and outlet 16, the pump housing 1 is assembled together side by side with gear housing 9, pump cover 3 is assemblied in the pump housing 1 one ends, gear box cover 11 is assemblied in gear housing 9 one ends, driving shaft 4, driven shaft 6 warp beams take up and fit in the gear housing 9 and extend in the pump housing 1, driving gear 12, driven gear 10 is positioned at gear housing 9 and is assemblied in respectively driving shaft 4, on the driven shaft 6, power rotor 2 and driven rotor 5 are positioned at the pump housing 1 and are assemblied in respectively driving shaft 4, on the driven shaft 6, motor tie-plate 13 is assemblied on the gear box cover 11.
The Roots pump of this structure, whole pump parts are suspended on the motor 14 by motor tie-plate 13, drive driving shaft 4 by motor shaft, drive the rotation of driven shaft 6 synchronous backwards by the synchronous driving gear that is meshed 12 and driven gear 10 during driving shaft 4 rotation, thereby guarantee the running of power rotor 2 and driven rotor 5 synchronous backwards, intermesh between two rotors but do not contact, form periodic volume-variation in import 15, the outlet 16 of the pump housing 1, finish the work of pump suction gasoline gas.
Further: be equipped with the shaft seal with gear housing 9 inner chambers and the isolation of the pump housing 1 inner chamber on driving shaft 4, the driven shaft 6, prevent that oil gas from leaking along axle, concrete, shaft seal is positioned on the gear housing 11.Pump cover 3, the pump housing 1, gear housing 9, gear box cover 11 are formed by the bolt serial connection.Between pump cover 3 and the pump housing 1, between the pump housing 1 and the gear housing 9, be equipped with seal ring between gear housing 9 and the gear box cover 11.Power rotor 2 and driven rotor 5 are trilobed structure.Power rotor 2 intermeshes with driven rotor 5 but does not contact mutually.The bearing that is used for assembling driving shaft, driven shaft lays respectively at the both sides of driving gear, driven gear.
Claims (8)
1. Roots pump, comprise the pump housing (1), pump cover (3), the power rotor that matches (2) and driven rotor (5), gear housing (9), gear box cover (11), the driving gear that is meshed (12) and driven gear (10), driving shaft (4), driven shaft (6), motor tie-plate (13), the described pump housing (1) is provided with import (15) and outlet (16), it is characterized in that: the described pump housing (1) is assembled together side by side with described gear housing (9), described pump cover (3) is assemblied in the pump housing (1) one end, described gear box cover (11) is assemblied in gear housing (9) one ends, described driving shaft (4), driven shaft (6) warp beam takes up and fits in the described gear housing (9) and extend in the described pump housing (1), described driving gear (12), driven gear (10) is positioned at described gear housing (9) and is assemblied in respectively driving shaft (4), on the driven shaft (6), described power rotor (2) and driven rotor (5) are positioned at the described pump housing (1) and are assemblied in respectively driving shaft (4), on the driven shaft (6), described motor tie-plate (13) is assemblied on the gear box cover (11).
2. Roots pump according to claim 1 is characterized in that: be equipped with the shaft seal with described gear housing (9) inner chamber and the isolation of the pump housing (1) inner chamber on described driving shaft (4), the driven shaft (6).
3. Roots pump according to claim 2, it is characterized in that: described shaft seal is positioned on the described gear housing (9).
4. Roots pump according to claim 1 is characterized in that: described pump cover (3), the pump housing (1), gear housing (9), gear box cover (11) are formed by bolt (17A, 17B) serial connection.
5. Roots pump according to claim 1 is characterized in that: between described pump cover (3) and the pump housing (1), between the pump housing (1) and the gear housing (9), be equipped with seal ring between gear housing (9) and the gear box cover (11).
6. Roots pump according to claim 1, it is characterized in that: described power rotor (2) and driven rotor (5) are trilobed structure.
7. Roots pump according to claim 1, it is characterized in that: described power rotor (2) intermeshes with driven rotor (5) but does not contact mutually.
8. Roots pump according to claim 1 is characterized in that: described bearing for assembling driving shaft, driven shaft lays respectively at the both sides of driving gear (12), driven gear (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220126073 CN202851357U (en) | 2012-03-29 | 2012-03-29 | Roots vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220126073 CN202851357U (en) | 2012-03-29 | 2012-03-29 | Roots vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202851357U true CN202851357U (en) | 2013-04-03 |
Family
ID=47982564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220126073 Expired - Lifetime CN202851357U (en) | 2012-03-29 | 2012-03-29 | Roots vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202851357U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107178495A (en) * | 2017-07-14 | 2017-09-19 | 姜庆华 | A kind of low vibration impeller pump |
| CN108252908A (en) * | 2018-03-28 | 2018-07-06 | 西安交通大学 | A kind of self-balancing wet type lobe pump |
| CN110319004A (en) * | 2019-07-15 | 2019-10-11 | 烟台菱辰能源有限公司 | A kind of claw hydrogen gas circulating pump |
| US11320036B2 (en) | 2019-09-23 | 2022-05-03 | Ovg Vacuum Technology (Shanghai) Co., Ltd | Transmission structure of motor connection of roots pump |
| US11339783B2 (en) | 2019-09-23 | 2022-05-24 | OVG Vacuum Technology (Shanghai) Co., Ltd. | Pump housing structure of three-axis multi-stage Roots pump |
| US11441564B2 (en) | 2019-09-23 | 2022-09-13 | OVG Vacuum Technology (Shanghai) Co., Ltd. | Driving structure of three-axis multi-stage roots pump |
| US11608829B2 (en) | 2019-10-10 | 2023-03-21 | OVG Vacuum Technology (Shanghai) Co., Ltd. | Structure of rotor connection of multi-axial multi-stage roots pump |
-
2012
- 2012-03-29 CN CN 201220126073 patent/CN202851357U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107178495A (en) * | 2017-07-14 | 2017-09-19 | 姜庆华 | A kind of low vibration impeller pump |
| CN108252908A (en) * | 2018-03-28 | 2018-07-06 | 西安交通大学 | A kind of self-balancing wet type lobe pump |
| CN108252908B (en) * | 2018-03-28 | 2024-03-29 | 西安交通大学 | Self-balancing wet Roots pump |
| CN110319004A (en) * | 2019-07-15 | 2019-10-11 | 烟台菱辰能源有限公司 | A kind of claw hydrogen gas circulating pump |
| US11320036B2 (en) | 2019-09-23 | 2022-05-03 | Ovg Vacuum Technology (Shanghai) Co., Ltd | Transmission structure of motor connection of roots pump |
| US11339783B2 (en) | 2019-09-23 | 2022-05-24 | OVG Vacuum Technology (Shanghai) Co., Ltd. | Pump housing structure of three-axis multi-stage Roots pump |
| US11441564B2 (en) | 2019-09-23 | 2022-09-13 | OVG Vacuum Technology (Shanghai) Co., Ltd. | Driving structure of three-axis multi-stage roots pump |
| US11608829B2 (en) | 2019-10-10 | 2023-03-21 | OVG Vacuum Technology (Shanghai) Co., Ltd. | Structure of rotor connection of multi-axial multi-stage roots pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130403 |
|
| CX01 | Expiry of patent term |