CN203867830U - Novel closed cycle vacuum unit - Google Patents
Novel closed cycle vacuum unit Download PDFInfo
- Publication number
- CN203867830U CN203867830U CN201420241146.0U CN201420241146U CN203867830U CN 203867830 U CN203867830 U CN 203867830U CN 201420241146 U CN201420241146 U CN 201420241146U CN 203867830 U CN203867830 U CN 203867830U
- Authority
- CN
- China
- Prior art keywords
- pump
- water ring
- roots
- ring pump
- roots pump
- Prior art date
- 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.)
- Expired - Lifetime
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 50
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 1
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- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The utility model discloses a novel closed cycle vacuum unit. The novel closed cycle vacuum unit comprises a roots pump package and a two-stage water ring pump which are connected through a pipeline, and a valve and a check valve are arranged on the pipeline between the roots pump package and the two-stage water ring pump. The novel closed cycle vacuum unit has the benefits that the vacuum unit is compact in structure, large in discharge capacity, stable in performance and long in service life; generally, the final vacuum of a single-stage water ring pump is not high, so that the two-stage water ring pump is adopted to improve the final vacuum of the vacuum unit; the final vacuum of one roots pump is relatively low, particularly when the roots pump is combined with a water ring pump for operation, the application range is restricted, and the final vacuum of the whole unit is probably lower, so that two roots pumps are connected in series for use and then combined with the water ring pump, and accordingly, the final vacuum of the vacuum unit is greatly improved.
Description
Technical field
The utility model relates to vacuum unit, relates in particular to novel closed-circuit vacuum unit.
Background technique
Can not discharging directly into atmosphere for the Roots pump mechanical booster pump of high vacuum, as discharging directly into atmosphere can cause Roots pump intakeport and relief opening pressure reduction too large, thereby make Roots pump overload, as simple increasing Roots pump power of motor can cause again micro-gap between the overheated so that Roots vacuum pump rotor of Roots pump very soon because thermal expansion is stuck.For ensureing that Roots pump can reach high vacuum and must ensure the gap between Roots vacuum pump rotor.So Roots pump must be provided with fore pump while use, restarts Roots pump while system internal pressure being evacuated in certain limit with fore pump, so can avoid Roots pump overload.Fore pump can be selected the vacuum pump that water ring vaccum pump, rotary-vane vaccum pump, slide-valve vacuum pump, reciprocating vacuum pump etc. can discharging directly into atmosphere.Roots pump and preevacuation pump are combined into vacuum unit, and at present, also there is the shortcomings such as ultimate vacuum is low in the vacuum unit on market, therefore, needs a kind of new technological scheme to address the above problem.
Model utility content
The utility model provides the novel closed-circuit vacuum unit that a kind of ultimate vacuum is high.
The beneficial effects of the utility model: novel closed-circuit vacuum unit comprises Roots pump group and twin-stage water ring pump, and Roots pump group is connected by pipeline with twin-stage water ring pump, and the pipeline between Roots pump group and twin-stage water ring pump is provided with valve and safety check.Roots pump group is in series by Roots pump I and Roots pump II, and Roots pump I is provided with total suction port; Twin-stage water ring pump is formed by connecting by water ring pump I and water ring pump II, and water ring pump II is provided with total air outlet.
Roots pump I and Roots pump II include rotor, suction port and air outlet, and rotor is a pair of, in the middle of rotor, are provided with axle, and rotor intermeshes, and the top of Roots pump I and Roots pump II has suction port, and bottom has air outlet.
Water ring pump I and water ring pump II include rotating shaft, impeller and pendular ring, and the bottom of water ring pump I and water ring pump II is equipped with base, in rotating shaft, be fixed with impeller, impeller outside is provided with intakeport and relief opening, and relief opening inside is provided with ball, and intakeport and relief opening outside are provided with pendular ring.
The beneficial effects of the utility model: vacuum unit compact structure of the present utility model, discharge capacity is large, stable performance, long service life; In general, single-stage water ring pump ultimate vacuum is not high, adopts twin-stage water ring pump, has improved the ultimate vacuum of vacuum unit; The ultimate vacuum of a Roots pump is lower, particularly, in the time of it and water ring pump combined running, using scope is restricted, and makes the ultimate vacuum of whole unit may be lower, use two Roots pump series connection to combine with water ring pump again, greatly improved the ultimate vacuum of vacuum unit.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Wherein, 1, total suction port, 2, Roots pump I, 3, Roots pump II, 4, axle, 5, rotor, 6, pipeline, 7, suction port, 8, air outlet, 9, valve, 10, safety check, 11, water ring pump I, 12, water ring pump II, 13, intakeport, 14, relief opening, 15, rotating shaft, 16, impeller, 17, pendular ring, 18, ball, 19, base, 20, total air outlet.
Embodiment
As shown in Figure 1, novel closed-circuit vacuum unit comprises Roots pump group and twin-stage water ring pump, and Roots pump group is connected by pipeline 6 with twin-stage water ring pump, and the pipeline 6 between Roots pump group and twin-stage water ring pump is provided with valve 9 and safety check 10.Roots pump group is in series by Roots pump I 2 and Roots pump II 3, and Roots pump I 2 is provided with total suction port 1; Twin-stage water ring pump is formed by connecting by water ring pump I 11 and water ring pump II 12, and water ring pump II 12 is provided with total air outlet 20.
Roots pump I 2 and Roots pump II 3 include rotor 5, suction port 7 and air outlet 8, and rotor 5 is a pair of, in the middle of rotor 5, are provided with axle 4, and rotor 5 intermeshes, and the top of Roots pump I 2 and Roots pump II 3 has suction port 7, and bottom has air outlet 8.
Water ring pump I 11 and water ring pump II 12 include rotating shaft 15, impeller 16 and pendular ring 17, the bottom of water ring pump I 11 and water ring pump II 12 is equipped with base 19, in rotating shaft 15, be fixed with impeller 16, impeller 16 outsides are provided with intakeport 13 and relief opening 14, relief opening 14 inside are provided with ball 18, and intakeport 13 and relief opening 14 outsides are provided with pendular ring 17.
Beneficial effect: vacuum unit compact structure of the present utility model, discharge capacity is large, stable performance, long service life; In general, single-stage water ring pump ultimate vacuum is not high, adopts twin-stage water ring pump, has improved the ultimate vacuum of vacuum unit; The ultimate vacuum of a Roots pump is lower, particularly, in the time of it and water ring pump combined running, using scope is restricted, and makes the ultimate vacuum of whole unit may be lower, use two Roots pump series connection to combine with water ring pump again, greatly improved the ultimate vacuum of vacuum unit.
Claims (3)
1. novel closed-circuit vacuum unit, is characterized in that: this unit comprises Roots pump group and twin-stage water ring pump, described Roots pump group is connected by pipeline with twin-stage water ring pump, and the pipeline between described Roots pump group and twin-stage water ring pump is provided with valve and safety check,
Described Roots pump group is in series by Roots pump I and Roots pump II, and described Roots pump I is provided with total suction port,
Described twin-stage water ring pump is formed by connecting by water ring pump I and water ring pump II, and described water ring pump II is provided with total air outlet.
2. novel closed-circuit vacuum unit according to claim 1, it is characterized in that: described Roots pump I and Roots pump II include rotor, suction port and air outlet, described rotor is a pair of, in the middle of described rotor, be provided with axle, described rotor intermeshes, the top of described Roots pump I and Roots pump II has suction port, and bottom has air outlet.
3. novel closed-circuit vacuum unit according to claim 1, it is characterized in that: described water ring pump I and water ring pump II include rotating shaft, impeller and pendular ring, the bottom of described water ring pump I and water ring pump II is equipped with base, in described rotating shaft, be fixed with impeller, described impeller outside is provided with intakeport and relief opening, and described relief opening inside is provided with ball, and described intakeport and relief opening outside are provided with pendular ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420241146.0U CN203867830U (en) | 2014-05-13 | 2014-05-13 | Novel closed cycle vacuum unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420241146.0U CN203867830U (en) | 2014-05-13 | 2014-05-13 | Novel closed cycle vacuum unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203867830U true CN203867830U (en) | 2014-10-08 |
Family
ID=51648791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420241146.0U Expired - Lifetime CN203867830U (en) | 2014-05-13 | 2014-05-13 | Novel closed cycle vacuum unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203867830U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108344221A (en) * | 2017-12-22 | 2018-07-31 | 佛山精迅能冷链科技有限公司 | A kind of vacuum precooling machine of adjustable governor pressure |
| FR3089261A1 (en) * | 2018-12-03 | 2020-06-05 | Pfeiffer Vacuum | Pumping group |
| CN115434902A (en) * | 2022-11-07 | 2022-12-06 | 中国空气动力研究与发展中心超高速空气动力研究所 | High-flow high-vacuum air pumping system and design method thereof |
-
2014
- 2014-05-13 CN CN201420241146.0U patent/CN203867830U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108344221A (en) * | 2017-12-22 | 2018-07-31 | 佛山精迅能冷链科技有限公司 | A kind of vacuum precooling machine of adjustable governor pressure |
| CN108344221B (en) * | 2017-12-22 | 2024-05-28 | 佛山精迅能冷链科技有限公司 | Vacuum precooler capable of regulating pressure |
| FR3089261A1 (en) * | 2018-12-03 | 2020-06-05 | Pfeiffer Vacuum | Pumping group |
| WO2020114754A1 (en) * | 2018-12-03 | 2020-06-11 | Pfeiffer Vacuum | Pumping unit |
| US11493042B2 (en) | 2018-12-03 | 2022-11-08 | Pfeiffer Vacuum | Pumping unit including a rough vacuum pump and a roots vacuum pump |
| CN115434902A (en) * | 2022-11-07 | 2022-12-06 | 中国空气动力研究与发展中心超高速空气动力研究所 | High-flow high-vacuum air pumping system and design method thereof |
| CN115434902B (en) * | 2022-11-07 | 2022-12-30 | 中国空气动力研究与发展中心超高速空气动力研究所 | Design method of high-flow high-vacuum air pumping system |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141008 |