CN202187918U - High negative-pressure Roots vacuum pump - Google Patents
High negative-pressure Roots vacuum pump Download PDFInfo
- Publication number
- CN202187918U CN202187918U CN2011202988027U CN201120298802U CN202187918U CN 202187918 U CN202187918 U CN 202187918U CN 2011202988027 U CN2011202988027 U CN 2011202988027U CN 201120298802 U CN201120298802 U CN 201120298802U CN 202187918 U CN202187918 U CN 202187918U
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- Prior art keywords
- vacuum pump
- high negative
- pump body
- roots vacuum
- gas
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- Expired - Fee Related
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Abstract
The utility model relates to the field of a Roots vacuum pump, in particular to a high negative-pressure Roots vacuum pump, comprising a vacuum pump body, air inlet passages communicated with the inside of the vacuum pump body through wall boards are connected on wall boards at two sides of the vacuum pump body respectively, the other ends of the two air inlet passages are respectively connected with a silencer, and valves are respectively arranged on the two air inlet passages. The high negative-pressure Roots vacuum pump is simple and reasonable in structure, is easy to manufacture, and has low cost, can ensure normal operation of the Roots vacuum pump in a high negative-pressure state and improves the heat suitability of the Roots vacuum pump.
Description
Technical field:
The utility model relates to the Roots pump field, especially a kind of high negative pressure Roots pump.
Background technique:
At present, the Roots pump of extensive use in industrial and mining enterprise, its working procedure is through rotor air to be sucked casing from intake grill, gets into exhaust duct from exhaust outlet then, is transferred out by exhaust duct again.There is following problem at work in traditional Roots pump: because air can produce heat in compression process; The heat that is particularly produced during High Pressure Difference is bigger, that is: compressed-air actuated pressure is proportional with the heat that is produced, so Roots pump is when higher temperature is worked; Its performance that not only causes equipment material easily changes; Influence the fiting effect of each mechanical part, cause shorten greatly its working life, its consequence has a strong impact on the normal operation of Roots pump.Therefore, how guaranteeing that Roots pump can run well under the high negative pressure state, is that present the sector has a difficult problem to be solved.
The model utility content:
The utility model provides a kind of high negative pressure Roots pump, and it is simple and reasonable, and is easy to manufacture; Cost is low; Can guarantee that Roots pump runs well under the high negative pressure state, improve the hot adaptability of Roots pump, solve the problem that exists in the existing technology.
The utility model is to solve the problems of the technologies described above the technological scheme that is adopted to be: it comprises the vacuum pump body; On the wallboard of the both sides of vacuum pump body, connect the gas-entered passageway that communicates with the vacuum pump body interior once wallboard respectively; The other end of two gas-entered passageways connects a baffler respectively, on two gas-entered passageways, is respectively equipped with a valve.
The utility model is simple and reasonable, is employed on the wallboard of vacuum pump body to connect gas-entered passageway, and the other end of gas-entered passageway connects baffler; One valve is set, when Roots pump is worked, when rotor forwards sealing station on gas-entered passageway; Under vacuum pump body interior action of negative pressure and atmospheric promotion, a large amount of cool airs gets in the wallboard through baffler, gas-entered passageway, gets in the vacuum pump body casing cavity through bearing outer ring then; Cooling vacuum pump body fundamentally reduces device temperature, along with the continuous running of vacuum pump; A large amount of continuous cooled gases are discharged vacuum pump with exhaust port after constantly getting into and accomplishing cooling in the body; Vacuum pump can be run well under the high negative pressure state continuously, improved the hot adaptability of Roots pump, improved the operating limit of Roots pump.
Description of drawings:
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the left TV structure schematic representation of Fig. 1.
Among the figure, 1, the vacuum pump body; 2, wallboard; 3, gas-entered passageway; 4, baffler; 5, valve.
Embodiment:
For clearly demonstrating the technical characterstic of this programme, below through embodiment, and combine its accompanying drawing, the utility model is set forth in detail.
Shown in Fig. 1～2; The utility model comprises vacuum pump body 1; On the both sides of vacuum pump body 1 wallboard 2, connect the gas-entered passageway 3 that communicates with vacuum pump body 1 inside once wallboard 2 respectively; The other end of two gas-entered passageways 3 connects a baffler 4 respectively, on two gas-entered passageways 3, is respectively equipped with a valve 5.
Adopt the utility model vacuum pump, vacuum pump is run well under the high negative pressure state continuously, improved the hot adaptability of Roots pump, improved the operating limit of Roots pump.
The utility model does not detail part, is those skilled in the art of the present technique's known technology.
Claims (1)
1. high negative pressure Roots pump; Comprise the vacuum pump body; It is characterized in that: on the wallboard of the both sides of vacuum pump body, connect the gas-entered passageway that communicates with the vacuum pump body interior once wallboard respectively; The other end of two gas-entered passageways connects a baffler respectively, on two gas-entered passageways, is respectively equipped with a valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202988027U CN202187918U (en) | 2011-08-17 | 2011-08-17 | High negative-pressure Roots vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202988027U CN202187918U (en) | 2011-08-17 | 2011-08-17 | High negative-pressure Roots vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202187918U true CN202187918U (en) | 2012-04-11 |
Family
ID=45919373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202988027U Expired - Fee Related CN202187918U (en) | 2011-08-17 | 2011-08-17 | High negative-pressure Roots vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202187918U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257540A (en) * | 2015-11-05 | 2016-01-20 | 山东三牛机械有限公司 | Double-pole high-pressure dry type roots vacuum pump unit |
| CN113090531A (en) * | 2021-04-27 | 2021-07-09 | 山东三牛机械集团股份有限公司 | Self-cooling Roots vacuum pump and self-cooling method thereof |
-
2011
- 2011-08-17 CN CN2011202988027U patent/CN202187918U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257540A (en) * | 2015-11-05 | 2016-01-20 | 山东三牛机械有限公司 | Double-pole high-pressure dry type roots vacuum pump unit |
| CN113090531A (en) * | 2021-04-27 | 2021-07-09 | 山东三牛机械集团股份有限公司 | Self-cooling Roots vacuum pump and self-cooling method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120411 Termination date: 20130817 |