CN110360112A - A kind of multi-stage roots pump vacuum energy-saving system - Google Patents
A kind of multi-stage roots pump vacuum energy-saving system Download PDFInfo
- Publication number
- CN110360112A CN110360112A CN201910453517.9A CN201910453517A CN110360112A CN 110360112 A CN110360112 A CN 110360112A CN 201910453517 A CN201910453517 A CN 201910453517A CN 110360112 A CN110360112 A CN 110360112A
- Authority
- CN
- China
- Prior art keywords
- pump
- roots
- stage
- saving system
- roots vaccum
- 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.)
- Pending
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 239000013618 particulate matter Substances 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 7
- 238000005086 pumping Methods 0.000 abstract description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 5
- 229910052602 gypsum Inorganic materials 0.000 description 5
- 239000010440 gypsum Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 229910052717 sulfur Inorganic materials 0.000 description 5
- 239000011593 sulfur Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 230000018044 dehydration Effects 0.000 description 4
- 238000006297 dehydration reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000004577 thatch Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C18/126—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with radially from the rotor body extending elements, not necessarily co-operating with corresponding recesses in the other rotor, e.g. lobes, Roots type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/001—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of similar working principle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/02—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C25/00—Adaptations of pumps for special use of pumps for elastic fluids
- F04C25/02—Adaptations of pumps for special use of pumps for elastic fluids for producing high vacuum
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/28—Safety arrangements; Monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/0092—Removing solid or liquid contaminants from the gas under pumping, e.g. by filtering or deposition; Purging; Scrubbing; Cleaning
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/04—Heating; Cooling; Heat insulation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2270/00—Control; Monitoring or safety arrangements
- F04C2270/18—Pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2270/00—Control; Monitoring or safety arrangements
- F04C2270/19—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2270/00—Control; Monitoring or safety arrangements
- F04C2270/86—Detection
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention discloses a kind of multi-stage roots to pump vacuum energy-saving system, belongs to vacuum pumping technology field.It include: vacuum tank, several Roots vaccum pumps, several motors and rack, several Roots vaccum pumps are mounted on the rack, and each motor is drivingly connected with a wherein Roots vaccum pump, and several Roots vaccum pumps are connected to by pipeline with vacuum tank.A kind of multi-stage roots pump vacuum energy-saving system provided by the invention utilizes the high-efficient feature of Roots vaccum pump; pressure difference is shared using multi-stage roots vacuum pump jointly; the energy, reduction discharge can be further saved on the basis of guaranteeing reliability service to realize, so that realizing reduces cost, protection environment.
Description
Technical field
The present invention relates to vacuum pumping technology fields, are specifically related to a kind of multi-stage roots pump vacuum energy-saving system.
Background technique
In the application of generation current factory sulfur removal technology, it is common to use liquid ring vacuum pumping system.Though the system is able to satisfy current
Vacuum level requirements in the application of power plant sulfur removal technology, but in power plant sulfur removal technology operating condition, separate unit liquid ring vacuum pumping system
Power consumption is big, water consumption is big, take up a large area, noise is big, maintenance cost is high.
Summary of the invention
For the above-mentioned problems in the prior art, it is desirable to provide a kind of multi-stage roots pump vacuum energy-saving system, mainly
In the process vacuumized applied to power plant sulfur removal technology gypsum dehydration machine, energy consumption can reduce, furthermore the system is dry type
System thus can accomplish water-saving, in addition can promote the stability and reliability of pumped vacuum systems.
Specific technical solution is as follows:
A kind of multi-stage roots pump vacuum energy-saving system, comprising: vacuum tank, several Roots vaccum pumps, several motors, Yi Jiji
Frame, several Roots vaccum pumps are mounted on the rack, and each motor is drivingly connected with a wherein Roots vaccum pump, several Roots vacuums
Pump is connected to by pipeline with vacuum tank.
In a kind of above-mentioned multi-stage roots pump vacuum energy-saving system, also have the feature that, if several lobe pumps are divided into
Dry grade, and adjacent two-stage Roots vaccum pump is serially connected, and is interconnected between adjacent Roots vaccum pump by pipeline, and head end is located at
The air entry of Roots vaccum pump be connected to vacuum tank by pipeline.
In a kind of above-mentioned multi-stage roots pump vacuum energy-saving system, also have the feature that, every level-one Roots vaccum pump
It can be separate unit Roots vaccum pump or more Roots vaccum pump parallel connections, and mutually be interconnected between adjacent Roots vaccum pump by pipeline
It is logical.
In a kind of above-mentioned multi-stage roots pump vacuum energy-saving system, also have the feature that, vacuum tank is internally provided with
Fill particulate matter arrester.
In a kind of above-mentioned multi-stage roots pump vacuum energy-saving system, also has the feature that, further includes several heat exchangers,
Heat exchanger is provided between adjacent two-stage Roots vaccum pump.
In a kind of above-mentioned multi-stage roots pump vacuum energy-saving system, also have the feature that, rack is fashioned iron weldment.
It in a kind of above-mentioned multi-stage roots pump vacuum energy-saving system, also has the feature that, several motors and a control
System communication connection.
In a kind of above-mentioned multi-stage roots pump vacuum energy-saving system, also have the feature that, each Roots vaccum pump
Outside is respectively connected with a motor.
In a kind of above-mentioned multi-stage roots pump vacuum energy-saving system, also have the feature that, Roots vaccum pump can be
Any type of Roots vaccum pump includes but are not limited to common double leaf lobe pump, air cooling lobe pump etc..
In a kind of above-mentioned multi-stage roots pump vacuum energy-saving system, also has the feature that, further include pressure and temp instrument
Table, pressure and temp instrument are connected in each pipeline for Monitor Equipment operating status.
The good effect of above-mentioned technical proposal is:
A kind of multi-stage roots provided by the invention pump vacuum energy-saving system, in power plant desulfurized gypsum dewatering process, benefit
With the high-efficient feature of Roots vaccum pump, pressure difference is shared using multi-stage roots vacuum pump jointly, so that realizing can protect
The energy is further saved on the basis of card reliability service, reduces discharge, so that realizing reduces cost, protection environment.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the embodiment that a kind of multi-stage roots of the invention pump vacuum energy-saving system.
In attached drawing: 1, Roots vaccum pump one；2, Roots vaccum pump two；3, motor；4, pipeline；5, vacuum tank.
Specific embodiment
It is real below in order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention
Example combination attached drawing 1 is applied to be specifically addressed a kind of multi-stage roots pump vacuum energy-saving system provided by the invention.
Fig. 1 is the structural schematic diagram for the embodiment that a kind of multi-stage roots of the invention pump vacuum energy-saving system；In this implementation
Example in, the multi-stage roots pump vacuum energy-saving system mainly include Roots vaccum pump 1, Roots vaccum pump 22, motor 3, pipeline 4,
Vacuum tank 5.
In a kind of multi-stage roots pump vacuum energy-saving system, which is mainly used in power plant sulfur removal technology gypsum dehydration machine
In the technique vacuumized, Roots vaccum pump 1 and Roots vaccum pump 22 are mounted on the rack, and two motors 3 are true with Roots respectively
Sky pump 1, Roots vaccum pump 22 are drivingly connected, and drive the rotor in Roots vaccum pump to be rotated by motor, Roots vacuum
One 1, Roots vaccum pump 22 is pumped to be connected to by pipeline 4 with vacuum tank 5.
In a preferred embodiment, as shown in Figure 1, several Roots vaccum pumps are divided into two-stage, including Roots
Vacuum pump 1 and Roots vaccum pump 22, wherein Roots vaccum pump 1 and Roots vaccum pump 22 are serially connected, two groups of pump housings it
Between be interconnected by pipeline 4, the air entry positioned at the Roots vaccum pump 1 of head end is connected to by pipeline 4 with vacuum tank 5, position
It is connected to by pipeline with vacuum tank 5 in the air entry of the Roots vaccum pump 1 of head end.
In a preferred embodiment, Roots vaccum pump 1 or Roots vaccum pump 22 can be separate unit Roots vacuum
Pump or more Roots vaccum pumps are formed in parallel, and are interconnected between the adjacent Roots vaccum pump in every level-one by pipeline.
In a preferred embodiment, as shown in Figure 1, the general vacuum tank 5 is gypsum dehydration machine vacuum tank, very
Slack tank 5 is internally provided with dress particulate matter arrester, prevents foreign matter from entering inside Roots vaccum pump, avoids influencing Roots
The operation of vacuum pump.
In a preferred embodiment, as shown in Figure 1, further including several heat exchangers, adjacent two-stage Roots vaccum pump
It is provided with heat exchanger between (1,2), the heat in connecting pipe is shed into air, to avoid the heat in Roots vaccum pump
Concentrations are to influence its normal work.
In a preferred embodiment, as shown in Figure 1, rack is fashioned iron weldment.
In a preferred embodiment, as shown in Figure 1, two motors 3 and a control system (not shown) are logical
News connection, control system can be uniformly controlled the opening and closing of two motors 3.
In a preferred embodiment, as shown in Figure 1, being respectively connected with one on the outside of each Roots vaccum pump (1,2)
Motor 3.
In a preferred embodiment, as shown in Figure 1, Roots vaccum pump can be any type of Roots vacuum
Pump, Roots vaccum pump is air-cooled Roots vacuum pump；Or Roots vaccum pump is water-cooled Roots vaccum pump；Or Roots vaccum pump is
Internal rotor cooled Roots vaccum pump；Or Roots vaccum pump is rotor oil film cooled Roots vaccum pump, preferably uses gas
Cold type Roots vaccum pump.Intensive cooling fin is set in the exhaust ports of Roots vaccum pump, cooling fin is cooled down with cold water pipe,
Or it is mounted directly cooling water pipe in the exhaust ports of pump, the gas of such exhaust ports will cool down, and this cooling means can have
Shed to effect roots pump rotor generated amount of holding in compressed gas.
In a preferred embodiment, as shown in Figure 1, further including pressure and temp instrument, the series connection of pressure and temp instrument
Operating status in each pipeline, for each equipment of monitoring system.
Hereinafter, being illustrated with a kind of specific embodiment, it should be pointed out that described in following implementation it
Structure, technique, selection are only to illustrate the feasibility of embodiment, the intention of there is no restriction the scope of the present invention.
The multi-stage roots pump vacuum energy-saving system, are arranged in series using the two poles of the earth Roots vaccum pump, Roots vaccum pump one and sieve
Thatch vacuum pump two is respectively by a motor driven, and wherein Roots vaccum pump one, Roots vaccum pump two and two motors are mounted on rack
On, and the air entry of Roots vaccum pump one is connect with the vacuum system (i.e. vacuum tank) of gypsum dehydration machine, Roots vaccum pump one
Exhaust outlet is connected to the air entry of Roots vaccum pump two by pipeline, furthermore the exhaust of Roots vaccum pump one and Roots vaccum pump two
Mouth is provided with heat exchanger, for dispersing the heat in Roots vaccum pump, using the high-efficient feature of Roots vaccum pump, using two
Grade Roots vaccum pump share pressure difference jointly, thus realize can be further saved on the basis of guaranteeing reliability service the energy,
Discharge is reduced, so that realizing reduces cost, protection environment.
The above is only preferred embodiments of the present invention, are not intended to limit the implementation manners and the protection scope of the present invention, right
For those skilled in the art, it should can appreciate that and all replace with being equal made by description of the invention and diagramatic content
It changes and obviously changes obtained scheme, should all be included within the scope of the present invention.
Claims (10)
1. a kind of multi-stage roots pump vacuum energy-saving system characterized by comprising vacuum tank, several Roots vaccum pumps, Ruo Gan electricity
Machine and rack, several Roots vaccum pumps are mounted on the rack, and each motor and wherein one Roots are true
Sky pump is drivingly connected, and several Roots vaccum pumps are connected to by pipeline with the vacuum tank.
2. a kind of multi-stage roots according to claim 1 pump vacuum energy-saving system, which is characterized in that several lobe pumps
It is divided into several grades, and Roots vaccum pump described in adjacent two-stage is serially connected, passes through pipeline phase between the adjacent Roots vaccum pump
Intercommunicated, the air entry positioned at the Roots vaccum pump of head end is connected to by pipeline with the vacuum tank.
3. a kind of multi-stage roots according to claim 2 pump vacuum energy-saving system, which is characterized in that Roots described in every level-one
Vacuum pump can be in parallel for Roots vaccum pump described in separate unit or the more Roots vaccum pumps, and the adjacent Roots vaccum pump it
Between by pipeline be interconnected.
4. a kind of multi-stage roots according to claim 1 pump vacuum energy-saving system, which is characterized in that inside the vacuum tank
It is provided with dress particulate matter arrester.
5. a kind of multi-stage roots according to claim 1 pump vacuum energy-saving system, which is characterized in that further include several heat exchange
Device is provided with the heat exchanger between Roots vaccum pump described in adjacent two-stage.
6. a kind of multi-stage roots according to claim 1 pump vacuum energy-saving system, which is characterized in that the rack is fashioned iron
Weldment.
7. a kind of multi-stage roots according to claim 1 pump vacuum energy-saving system, which is characterized in that several motors with
One control system communication connection.
8. a kind of multi-stage roots according to claim 1 pump vacuum energy-saving system, which is characterized in that each Roots is true
The outside of sky pump is respectively connected with a motor.
9. a kind of multi-stage roots according to claim 1 pump vacuum energy-saving system, which is characterized in that the Roots vaccum pump
It can be any type of Roots vaccum pump.
10. a kind of multi-stage roots according to claim 1 pump vacuum energy-saving system, which is characterized in that further include pressure temperature
Instrument is spent, the pressure and temp instrument is connected in each pipeline for Monitor Equipment operating status.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910453517.9A CN110360112A (en) | 2019-05-28 | 2019-05-28 | A kind of multi-stage roots pump vacuum energy-saving system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910453517.9A CN110360112A (en) | 2019-05-28 | 2019-05-28 | A kind of multi-stage roots pump vacuum energy-saving system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110360112A true CN110360112A (en) | 2019-10-22 |
Family
ID=68214940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910453517.9A Pending CN110360112A (en) | 2019-05-28 | 2019-05-28 | A kind of multi-stage roots pump vacuum energy-saving system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110360112A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0674106A1 (en) * | 1994-03-16 | 1995-09-27 | Chemitec Co., Ltd. | A multistage vacuum pump |
| CN201565448U (en) * | 2009-11-23 | 2010-09-01 | 天津市谊诚包装制品有限责任公司 | Device for cleaning residues inside bucket |
| CN202523491U (en) * | 2012-04-01 | 2012-11-07 | 广州岭南电缆股份有限公司 | Novel high-efficiency evacuator for extruder |
| CN204196211U (en) * | 2014-10-20 | 2015-03-11 | 宁波海雨新材料科技有限公司 | A kind of head of plastic extruder vacuum extractor |
| CN205779711U (en) * | 2016-06-24 | 2016-12-07 | 杭州新安江工业泵有限公司 | The complete vacuum pump set of Roots's pendular ring |
| CN205871135U (en) * | 2016-08-06 | 2017-01-11 | 广东美塑塑料科技有限公司 | Extruder evacuating device |
| CN206377025U (en) * | 2016-09-14 | 2017-08-04 | 江阴爱尔姆真空设备有限公司 | A kind of full air cooling Roots unit |
| CN108180144A (en) * | 2018-01-03 | 2018-06-19 | 上海宽量节能投资有限公司 | A kind of mechanical pump group composing method and its mechanical pump system for liquid steel degassing is united |
| CN109237959A (en) * | 2018-09-07 | 2019-01-18 | 华电电力科学研究院有限公司 | A kind of multi-stage dry Roots vaccum pump double pressure condenser pumped vacuum systems and method |
| CN211202302U (en) * | 2019-05-28 | 2020-08-07 | 上海伊莱茨真空技术有限公司 | Multistage roots pump vacuum economizer system |
-
2019
- 2019-05-28 CN CN201910453517.9A patent/CN110360112A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0674106A1 (en) * | 1994-03-16 | 1995-09-27 | Chemitec Co., Ltd. | A multistage vacuum pump |
| CN201565448U (en) * | 2009-11-23 | 2010-09-01 | 天津市谊诚包装制品有限责任公司 | Device for cleaning residues inside bucket |
| CN202523491U (en) * | 2012-04-01 | 2012-11-07 | 广州岭南电缆股份有限公司 | Novel high-efficiency evacuator for extruder |
| CN204196211U (en) * | 2014-10-20 | 2015-03-11 | 宁波海雨新材料科技有限公司 | A kind of head of plastic extruder vacuum extractor |
| CN205779711U (en) * | 2016-06-24 | 2016-12-07 | 杭州新安江工业泵有限公司 | The complete vacuum pump set of Roots's pendular ring |
| CN205871135U (en) * | 2016-08-06 | 2017-01-11 | 广东美塑塑料科技有限公司 | Extruder evacuating device |
| CN206377025U (en) * | 2016-09-14 | 2017-08-04 | 江阴爱尔姆真空设备有限公司 | A kind of full air cooling Roots unit |
| CN108180144A (en) * | 2018-01-03 | 2018-06-19 | 上海宽量节能投资有限公司 | A kind of mechanical pump group composing method and its mechanical pump system for liquid steel degassing is united |
| CN109237959A (en) * | 2018-09-07 | 2019-01-18 | 华电电力科学研究院有限公司 | A kind of multi-stage dry Roots vaccum pump double pressure condenser pumped vacuum systems and method |
| CN211202302U (en) * | 2019-05-28 | 2020-08-07 | 上海伊莱茨真空技术有限公司 | Multistage roots pump vacuum economizer system |
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