CN203009245U - Large air exhaust capacity mechanical pump system for vacuum steelmaking - Google Patents
Large air exhaust capacity mechanical pump system for vacuum steelmaking Download PDFInfo
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- CN203009245U CN203009245U CN 201220711767 CN201220711767U CN203009245U CN 203009245 U CN203009245 U CN 203009245U CN 201220711767 CN201220711767 CN 201220711767 CN 201220711767 U CN201220711767 U CN 201220711767U CN 203009245 U CN203009245 U CN 203009245U
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- vacuum
- roots
- pump
- roots pump
- exhaust
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Abstract
The utility model relates to a large air exhaust capacity mechanical pump system for vacuum steelmaking. The large air exhaust capacity mechanical pump system for the vacuum steelmaking comprises at least a group of roots pump units and at least a water ring pump, wherein suction ends of the roots pump units are in parallel connection through an air suction header pipe; exhaust ends of the roots pump units are in parallel connection through an exhaust header pipe; the exhaust header pipe is communicated with suction inlets of the water ring pumps through an exhaust vacuum valve; air outlets of the water ring pumps are communicated with air after parallel connection; the roots pump units comprise roots pump vacuum valves and third-level roots pumps; the third-level roots pumps which are arranged on an engine seat are in series connection with each other; and the roots pump vacuum valves are connected with a suction inlet of a first-level roots pump. The large air exhaust capacity mechanical pump system for the vacuum steelmaking has the advantages of being powered by electricity, high in efficiency, small in equipment investment and capable of protecting roots pumps not to be destroyed by flue gases and dust.
Description
Technical field
The utility model relates to a kind of vacuum smelting equipment, relates in particular the large rate of air sucked in required mechanical pump system of a kind of vacuum steel-making use.
Background technique
At present, during metal smelting, remain under vacuum state in order to guarantee metallic solution under vacuum, normally used large rate of air sucked in required vacuum equipment is Steam Ejector System and dry-type mechanical pumping system always.
The major character of vapor pump is Laval nozzle, take steam as power, makes system obtain working vacuum.System maintenance is fairly simple, but needs to consume a large amount of steam, and vapor pump efficient is low, and energy consumption is high.The supporting facility of Steam Ejector System is more, builds boiler room, cold water pump house, hot water pump house, steam line, cooling water pipeline, high vacuum pump house etc. as needs.
The major character of dry vacuum pumping system is secondary Roots pump and the preposition screw pump of one-level, take electricity as power, high than Steam Ejector System efficient, but the fore pump of dry vacuum pump is screw pump, amount of dust there is strict demand, and in the flue gas of vacuum refining amount of dust and temperature all higher, so the dry vacuum pumping system has its deficiency.
The model utility content
Be to solve the deficiencies in the prior art, the purpose of this utility model is to provide the large rate of air sucked in required mechanical pump system of low, the stable vacuum steel-making use of a kind of reliable working performance, cost.
For achieving the above object, the utility model is to realize by following technological scheme: the large rate of air sucked in required mechanical pump system of a kind of vacuum steel-making use, comprise at least one group of Roots pump unit and at least one water ring pump, the suction end of described Roots pump unit is in parallel by air suction main, the exhaust end of described Roots pump unit is in parallel by exhaust manifold, described exhaust manifold is communicated with described water ring pump intake by the exhaust vacuum valve, communicates with atmosphere after the relief opening parallel connection of described water ring pump;
Described Roots pump unit comprises Roots pump vacuum valve and three grades of Roots pumps that are arranged on mutual series connection on support, and described Roots pump vacuum valve is connected with first order Roots pump intake.
The technological scheme that the utility model further limits is: described system also comprises bypass valve, and described exhaust manifold is communicated with described air suction main by described bypass valve.
Further, described system also comprises at least one group of bag-type dust collector that is communicated with described air suction main, and described bag-type dust collector comprises sack cleaner and two dedusting vacuum valves that are arranged at respectively described sack cleaner two ends.
Further, described Roots pump unit is 7 groups.
Further, described water ring pump is 3.
The beneficial effects of the utility model are: the large rate of air sucked in required mechanical pump system of the disclosed a kind of vacuum steel-making of the utility model use, take electricity as power, efficient is high, need not to build boiler room, water cooling pond, cooling tower, hot-tub, steam line, cooling water and advance water return pipeline, vacuum pump house angle is low, and equipment investment is few; The utility model system exhaust capacity is large, but Roots pump element number flexible combination, and water ring pump quantity is few, and is provided with the Roots pump short-circuiting means, and Roots pump is had the dust protection protective measure, extends the working life of Roots pump.
Description of drawings
Fig. 1 is the structural representation of the large rate of air sucked in required mechanical pump system of a kind of vacuum steel-making use described in the utility model.
In accompanying drawing, the main mark implication is as follows:
1, Roots pump; 2, support; 3, Roots pump vacuum valve; 4, air suction main; 5, exhaust manifold;
6, exhaust vacuum valve; 7, water ring pump; 8, bypass valve; 9, sack cleaner; 10, dedusting vacuum valve;
11, gas cooler.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is done concrete introduction.
Fig. 1 is the structural representation of the large rate of air sucked in required mechanical pump system of a kind of vacuum steel-making use described in the utility model.
As described in Figure 1, the large rate of air sucked in required mechanical pump system of a kind of vacuum steel-making use is connected in the outlet end of gas cooler 11, comprise at least one group of Roots pump unit and at least one water ring pump 7, in the present embodiment, the quantity of Roots pump unit is 7 groups, and the quantity of water ring pump 7 is 3.
The Roots pump unit comprises Roots pump vacuum valve 3 and three grades of Roots pumps 1 that are arranged on mutual series connection on support 2, and described Roots pump vacuum valve 3 is connected with first order Roots pump intake.
The suction end of Roots pump unit is by air suction main 4 parallel connections, and the exhaust end of Roots pump unit is by exhaust manifold 5 parallel connections, and exhaust manifold 5 is communicated with by the suction port of exhaust vacuum valve 6 with water ring pump 7, communicates with atmosphere after the relief opening parallel connection of water ring pump 7.Simultaneously, exhaust manifold 5 is communicated with air suction main 4 by a bypass valve 8, and short circuit Roots pump unit, make flue gas directly enter the strong water ring pump 7 of anti-grey ability where necessary, protection Roots pump 1.
In addition, native system also comprises two groups of bag-type dust collectors that are communicated with air suction main 4, and the flue gas that is used for entering the Roots pump unit carries out dedusting, further protects Roots pump.Described bag-type dust collector comprises that sack cleaner 9 and 10, two dedusting vacuum valves 10 of two dedusting vacuum valves are arranged at respectively the two ends of sack cleaner 9.
The electrode of above-mentioned Roots pump 1 and water ring pump 7 is the frequency control of motor speed electrode, and the system vacuum degree can steplessly be controlled.Above-mentioned Roots pump vacuum valve 3, exhaust vacuum valve 6, bypass valve 8 and dedusting vacuum valve 10 are the butterfly vacuum valve.
The large rate of air sucked in required mechanical pump system work process of a kind of vacuum steel-making use described in the utility model is:
When pressure is in 100kPa-8kPa, start water ring pump 7, open exhaust vacuum valve 6 and bypass valve 8, make the Roots pump unit be in short-circuit condition, flue gas directly enters the strong water ring pump 7 of anti-grey ability, protection Roots pump 1.
When pressure is in 8kPa-5kPa, close bypass valve 8, open Roots pump vacuum valve 3 and dedusting vacuum valve 10, start third level Roots pump; When pressure is in 5kPa-2kPa, start second level Roots pump; When pressure is in 2kPa-0kPa, start first order Roots pump.
Smelt when finishing, according to the order of first order Roots pump, second level Roots pump, third level Roots pump, water ring pump, termination of pumping step by step, and close Roots pump vacuum valve 3, exhaust vacuum valve 6 and dedusting vacuum valve 10.
Native system is in parallel by three grades of many groups Roots pump unit, forms large rate of air sucked in required mechanical pump system, reaches the requirement of vacuum refining molten steel, energy-conservation, high working efficiency, and anti-dust ability is strong.
Above-described embodiment does not limit the utility model in any form, and all employings are equal to replaces or technological scheme that the mode of equivalent transformation obtains, all drops in protection domain of the present utility model.
Claims (5)
1. the large rate of air sucked in required mechanical pump system of vacuum steel-making use, it is characterized in that, comprise at least one group of Roots pump unit and at least one water ring pump (7), the suction end of described Roots pump unit is by air suction main (4) parallel connection, the exhaust end of described Roots pump unit is by exhaust manifold (5) parallel connection, described exhaust manifold (5) is communicated with by the suction port of exhaust vacuum valve (6) with described water ring pump (7), communicates with atmosphere after the relief opening parallel connection of described water ring pump (7);
Described Roots pump unit comprises Roots pump vacuum valve (3) and is arranged on support (2) goes up three grades of Roots pumps (1) of series connection mutually, and described Roots pump vacuum valve (3) is connected with first order Roots pump intake.
2. the large rate of air sucked in required mechanical pump system of a kind of vacuum steel-making use according to claim 1, is characterized in that, described system also comprises bypass valve (8), and described exhaust manifold (5) is communicated with described air suction main (4) by described bypass valve (8).
3. the large rate of air sucked in required mechanical pump system of a kind of vacuum steel-making use according to claim 1, it is characterized in that, described system also comprises at least one group of bag-type dust collector that is communicated with described air suction main (4), and described bag-type dust collector comprises sack cleaner (9) and two dedusting vacuum valves (10) that are arranged at respectively described sack cleaner (9) two ends.
4. the large rate of air sucked in required mechanical pump system of a kind of vacuum steel-making use according to claim 1, is characterized in that, described Roots pump unit is 7 groups.
5. the large rate of air sucked in required mechanical pump system of a kind of vacuum steel-making use according to claim 1, is characterized in that, described water ring pump (7) is 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220711767 CN203009245U (en) | 2012-12-21 | 2012-12-21 | Large air exhaust capacity mechanical pump system for vacuum steelmaking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220711767 CN203009245U (en) | 2012-12-21 | 2012-12-21 | Large air exhaust capacity mechanical pump system for vacuum steelmaking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203009245U true CN203009245U (en) | 2013-06-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220711767 Expired - Fee Related CN203009245U (en) | 2012-12-21 | 2012-12-21 | Large air exhaust capacity mechanical pump system for vacuum steelmaking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203009245U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104358688A (en) * | 2014-10-28 | 2015-02-18 | 南通御丰塑钢包装有限公司 | Water ring vacuum pump unit |
| CN106399639A (en) * | 2016-01-19 | 2017-02-15 | 陈莉菲 | Dry type mechanical vacuum pump degassing system and method for liquid steel secondary refining |
| CN109202069A (en) * | 2018-10-16 | 2019-01-15 | 晋城鸿刃科技有限公司 | Hard alloy degreasing equipment and method |
| CN109402329A (en) * | 2018-11-01 | 2019-03-01 | 上海伊莱茨真空技术有限公司 | A kind of vacuum system applied in steel industry molten steel vacuum degassing process |
| CN111304409A (en) * | 2020-03-23 | 2020-06-19 | 中冶南方工程技术有限公司 | RH vacuum refining system and using method thereof |
-
2012
- 2012-12-21 CN CN 201220711767 patent/CN203009245U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104358688A (en) * | 2014-10-28 | 2015-02-18 | 南通御丰塑钢包装有限公司 | Water ring vacuum pump unit |
| CN106399639A (en) * | 2016-01-19 | 2017-02-15 | 陈莉菲 | Dry type mechanical vacuum pump degassing system and method for liquid steel secondary refining |
| CN106399639B (en) * | 2016-01-19 | 2018-05-08 | 陈莉菲 | Dry-type mechanical vacuum pump degassing system and degassing method for steel secondary refining |
| CN109202069A (en) * | 2018-10-16 | 2019-01-15 | 晋城鸿刃科技有限公司 | Hard alloy degreasing equipment and method |
| CN109402329A (en) * | 2018-11-01 | 2019-03-01 | 上海伊莱茨真空技术有限公司 | A kind of vacuum system applied in steel industry molten steel vacuum degassing process |
| CN111304409A (en) * | 2020-03-23 | 2020-06-19 | 中冶南方工程技术有限公司 | RH vacuum refining system and using method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130619 Termination date: 20151221 |
|
| EXPY | Termination of patent right or utility model |