CN106014995A - Multi-stage dry Roots vacuum pump - Google Patents
Multi-stage dry Roots vacuum pump Download PDFInfo
- Publication number
- CN106014995A CN106014995A CN201610534753.XA CN201610534753A CN106014995A CN 106014995 A CN106014995 A CN 106014995A CN 201610534753 A CN201610534753 A CN 201610534753A CN 106014995 A CN106014995 A CN 106014995A
- Authority
- CN
- China
- Prior art keywords
- pump
- rotor
- stage dry
- roots vaccum
- dry roots
- 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
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
- 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
- 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
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- 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
- 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
- F04C2220/00—Application
- F04C2220/10—Vacuum
Abstract
The invention discloses a multi-stage dry Roots vacuum pump. According to the multi-stage dry Roots vacuum pump, a pump body (1) comprises a cooling water spacer bush (1.1) wrapped an outer layer; an inner cavity of the pump body (1) is divided into a plurality of manually independent pump cavities along the axial direction thereof; each pump cavity comprises an inner cavity (1.2), and an outer cavity (1.3) located between the inner cavity (1.2) and the cooling water spacer bush (1.1); the inner cavities (1.2) and the outer cavities (1.3) of the front and rear adjacent pump cavities are communicated; a shaft (6) is connected in the pump body (1) in a penetrating manner; a plurality of pairs of rotors (5) are installed on the shaft (6) in a sleeving manner; one pair of rotors (5) is arranged in each pump cavity, and comprises a drive rotor (5.1) and a driven rotor (5.2) which are mutually engaged and located in the corresponding inner cavity (1.2); and each drive rotor (5.1) and the corresponding driven rotor (5.2) are installed on a drive shaft (6.1) and a driven shaft (6.2) in a sleeving manner respectively. The multi-stage dry Roots vacuum pump disclosed by the invention is simple in structure, convenient to use, low in fault rate and capable of achieving the requirement of a higher vacuum degree.
Description
Technical field
The present invention relates to a kind of vacuum pump, especially relate to the dry type Roots vaccum pump of a kind of multi-level form, its oil-free is polluted without waste gas, without discharging of waste liquid and more condition of high vacuum degree much higher level dry type Roots vaccum pump can be reached, and belongs to vacuum pump technology field.
Background technology
At present, exist the most in a large number in vacuum application and use high energy consumption, all kinds of vacuum pumps of high pollution discharge, as used the oil-sealed vacuum pump such as a large amount of oil consumption and the sliding vane rotary vacuum pump of waste gas discharge, sliding valve vacuum pump, and high energy consumption and there is a large amount of waste liquid, the liquid-ring vacuum pump of waste gas discharge, these vacuum pumps be not suitable with the at present national requirement to energy-conserving and environment-protective low emission；
Simultaneously, conventional Roots vaccum pump is single-stage Roots vaccum pump, the vacuum that single-stage Roots vaccum pump can reach is limited, in order to meet more condition of high vacuum degree requirement, conventional mode is to be cascaded by multiple single-stage Roots vaccum pumps by connection pipeline and external cooler, the multi-stage roots vacuum pump group of this form has multiple motor and overlaps cooling device more, there is the defect that structure is complicated, bulky in the multi-stage roots vacuum pump group of the composition made in this way, and it is higher to control complexity, fault rate.
Summary of the invention
It is an object of the invention to overcome above-mentioned deficiency, a kind of simple in construction is provided, easy to use, failure rate is low and the multi-stage dry Roots vaccum pump of more condition of high vacuum degree requirement can be reached, the rotor machining of multi-stage dry Roots vaccum pump of the present invention is simpler than the processing of the screw rod of dry screw vacuum pump, therefore the manufacturing cost of multi-stage dry Roots vaccum pump more advantage, and contrast with dry screw vacuum pump, it is low that multi-stage dry Roots vaccum pump has fault, easy to maintenance, use cost is lower waits many advantages, marketing can be more prone to, interior can the most extensively be applied multi-field；
Simultaneously, before and after the pumps at different levels of composition this patent multi-stage dry Roots vaccum pump, the volume of level distributes than according to a certain ratio, this proportioning can reduce the compression ratio between Roots vaccum pump at different levels, so can reduce temperature rise and the power consumption of Roots vaccum pump, not only economize on electricity, economize on water but also can make Roots vaccum pump well to run in alap temperature range.
The object of the present invention is achieved like this:
A kind of multi-stage dry Roots vaccum pump, described multi-stage dry Roots vaccum pump includes the pump housing, the described pump housing includes the cooling water spacer being wrapped in outer layer, the inner chamber of the described pump housing is axially spaced for multiple separate pump chambers along it, each pump chamber includes inner chamber and the exocoel between inner chamber and cooling water spacer, the inner chamber of the most adjacent pump chamber is connected with exocoel, and (inner chamber is suction muffler, exocoel is discharge chamber, and the discharge chamber of previous stage pump chamber is connected with the suction muffler of rear stage pump chamber)；
In the pump housing, cross-under has axle, multipair rotor it is set with on described axle, being provided with a pair rotor in each pump chamber, rotor includes and engages each other and be positioned at the power rotor in inner chamber and driven rotor, and power rotor and driven rotor are set with on driving shaft and driven shaft.
One multi-stage dry Roots vaccum pump of the present invention, the two ends of the described pump housing are provided with end cap, described power rotor and driven rotor are all erected between two end caps, it is separately installed with offside tank and offside tank on two end caps in left and right, in described offside tank, gear is installed, described gear is a pair intermeshing synchromesh gear, and these two synchromesh gears are set on driving shaft and driven shaft.
One multi-stage dry Roots vaccum pump of the present invention, the molded lines of rotor of rotor is trilobal cross involute structure.
One multi-stage dry Roots vaccum pump of the present invention, the gap between power rotor and driven rotor and between rotor and the pump housing is 0.2mm.
One multi-stage dry Roots vaccum pump of the present invention, the inner chamber of first order pump chamber is connected with air entry, and air entry with treat that vacuum-pumping container is connected；Exocoel is connected with air vent.
The operation principle of the present invention is:
Multi-stage rotor is fixed on axle, axle is supported on the end cap of pump housing both sides by bearing, a pair synchromesh gear in offside tank drives rotor to do constant speed counter rotational movement in the pump housing, mechanical seal in offside tank makes main shaft overhanging end vacuum pump and isolated from atmosphere, the shaft coupling on main shaft top are connected with the shaft of motor；The power of motor is delivered to main shaft by shaft coupling, then is transferred power on driven shaft by synchromesh gear；Air entry is connected with being evacuated container, and air vent is connected with air.
Compared with prior art, the invention has the beneficial effects as follows:
Multi-stage roots vacuum pump is arranged in the pump chambers at different levels in the same pump housing by the present invention, is coupled in series by multi-stage dry Roots vaccum pump by these separate pump chambers of pump body, i.e. the air entry of previous stage is connected with the air vent of rear stage；The cooling system of vacuum pump is directly arranged in the internal cooling water spacer of the pump housing equally, thus avoids loaded down with trivial details gas and cooling water pipeline connects and control system is easier；The compact conformation of multi-stage dry Roots vaccum pump, and directly cool down more preferable than external cooling effect, multi-stage dry Roots vaccum pump shares a motor and a set of chiller, and therefore multi-stage dry Roots vaccum pump has the advantage such as compact conformation, volume is little, energy consumption is low, installation.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention a kind of multi-stage dry Roots vaccum pump.
Fig. 2 is the cross sectional representation at the pump housing of the present invention a kind of multi-stage dry Roots vaccum pump.
Fig. 3 is the cross section view at the prime pump chamber of the present invention a kind of multi-stage dry Roots vaccum pump.
Fig. 4 is the cross section view at the rear class pump chamber of the present invention a kind of multi-stage dry Roots vaccum pump.
Wherein:
The pump housing 1, end cap 2, offside tank 3, gear 4, rotor 5, axle 6, offside tank 7, shaft coupling 8, motor 9, air entry 10, air vent 11, base 12；
Cooling water spacer 1.1, inner chamber 1.2, exocoel 1.3；
Power rotor 5.1, driven rotor 5.2；
Driving shaft 6.1, driven shaft 6.2.
Detailed description of the invention
See Fig. 1 ~ 4, a kind of multi-stage dry Roots vaccum pump that the present invention relates to, described multi-stage dry Roots vaccum pump includes the pump housing 1, the described pump housing 1 includes the cooling water spacer 1.1 being wrapped in outer layer, the inner chamber of the described pump housing 1 is axially spaced for multiple separate pump chambers along it, each pump chamber includes inner chamber 1.2, and be interconnected between exocoel 1.3(inner chamber 1.2 and the exocoel 1.3 between inner chamber 1.2 and cooling water spacer 1.1), the most adjacent pump chamber inner chamber 1.2 is connected with exocoel 1.3, and (inner chamber 1.2 is suction muffler, exocoel 1.3 is discharge chamber, as shown in Figure 4, the discharge chamber of previous stage pump chamber is connected with the suction muffler of rear stage pump chamber)；
In the pump housing 1, cross-under has axle 6, multipair rotor 5 it is set with on described axle 6, a pair rotor 5 it is provided with in each pump chamber, rotor 5 includes the power rotor 5.1 and driven rotor 5.2 engaging each other and being positioned in inner chamber 1.2, and power rotor 5.1 and driven rotor 5.2 are set with on driving shaft 6.1 and driven shaft 6.2；
Concretely, the two ends of the described pump housing 1 are provided with end cap 2, described power rotor 5.1 and driven rotor 5.2 are all erected between two end caps 2, it is separately installed with offside tank 3 and offside tank 7 on two end caps 2 in left and right, in described offside tank 3, gear 4 is installed, described gear 4 is a pair intermeshing synchromesh gear, these two synchromesh gears are set on driving shaft 6.1 and driven shaft 6.2, so that synchronous backward rotates on driving shaft 6.1 and driven shaft 6.2, described driving shaft 6.1 through after offside tank 7 through being connected with motor 9 by shaft coupling 8；
Preferably, the sealing of the pump housing 1 uses mechanical seal structure, in each pump chamber between each pair of rotor, rotor and pump housing inner chamber all keep certain interval, so need not lubrication during rotor operation, pump chamber is oil-free structure；Being full of cooling water in cooling water spacer in pump housing separate space, such pump operationally need not configure extra chiller.
Meanwhile, the molded lines of rotor of rotor 5 have employed trilobal cross involute structure, uses the Roots vaccum pump of SANYE involute rotor can decline about 30% than the temperature rise of two leaf rotor Roots vaccum pumps, and pumping efficiency can improve about 20%；
Further, the gap between power rotor 5.1 and driven rotor 5.2 and between rotor 5 and the pump housing 1 is 0.2mm；
During use, the inner chamber 1.2 of first order pump chamber is connected with air entry 10, and air entry 10 with treat that vacuum-pumping container is connected；Exocoel 1.3 is connected with air vent 11, directly puts idle discharge；
Additionally: it should be noted that above-mentioned detailed description of the invention is only a prioritization scheme of this patent, any change that those skilled in the art is done according to above-mentioned design or improvement, all within the protection domain of this patent.
Claims (5)
1. a multi-stage dry Roots vaccum pump, described multi-stage dry Roots vaccum pump includes the pump housing (1), it is characterized in that: the described pump housing (1) includes cooling water spacer (1.1) being wrapped in outer layer, the inner chamber of the described pump housing (1) is axially spaced for multiple separate pump chambers along it, each pump chamber includes inner chamber (1.2) and is positioned at the exocoel (1.3) between inner chamber (1.2) and cooling water spacer (1.1), and the inner chamber (1.2) of the most adjacent pump chamber is connected with exocoel (1.3)；
The pump housing (1) interior cross-under has axle (6), multipair rotor (5) it is set with on described axle (6), a pair rotor (5) it is provided with in each pump chamber, rotor (5) includes the power rotor (5.1) and driven rotor (5.2) engaging each other and being positioned in inner chamber (1.2), and power rotor (5.1) and driven rotor (5.2) are set with on driving shaft (6.1) and driven shaft (6.2).
2. a kind of multi-stage dry Roots vaccum pump, it is characterized in that: the two ends of the described pump housing (1) are provided with end cap (2), described power rotor (5.1) and driven rotor (5.2) are all erected between two end caps (2), it is separately installed with offside tank (3) and offside tank (7) on two end caps (2) in left and right, gear (4) is installed in described offside tank (3), described gear (4) is a pair intermeshing synchromesh gear, and these two synchromesh gears are set on driving shaft (6.1) and driven shaft (6.2).
3. a kind of multi-stage dry Roots vaccum pump, it is characterised in that: the molded lines of rotor of rotor (5) is trilobal cross involute structure.
4. a kind of multi-stage dry Roots vaccum pump, it is characterised in that: the gap between power rotor (5.1) and driven rotor (5.2) and between rotor (5) and the pump housing (1) is 0.2mm.
5. as claimed in claim 1 a kind of multi-stage dry Roots vaccum pump, it is characterised in that: the inner chamber (1.2) of first order pump chamber is connected with air entry (10), and air entry (10) with treat that vacuum-pumping container is connected；Exocoel (1.3) is connected with air vent (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610534753.XA CN106014995A (en) | 2016-07-08 | 2016-07-08 | Multi-stage dry Roots vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610534753.XA CN106014995A (en) | 2016-07-08 | 2016-07-08 | Multi-stage dry Roots vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106014995A true CN106014995A (en) | 2016-10-12 |
Family
ID=57108223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610534753.XA Pending CN106014995A (en) | 2016-07-08 | 2016-07-08 | Multi-stage dry Roots vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106014995A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107473296A (en) * | 2017-09-22 | 2017-12-15 | 陕西厚亿节能环保新材料科技有限公司 | A kind of middle-size and small-size both vapor compression distilling apparatus of water process |
| CN107559196A (en) * | 2017-09-22 | 2018-01-09 | 陕西厚亿节能环保新材料科技有限公司 | A kind of high airproof water-cooled type roots blower equipment |
| CN109854501A (en) * | 2019-03-21 | 2019-06-07 | 南通龙鹰真空科技有限公司 | A kind of multi-stage roots vacuum pump |
| CN113803255A (en) * | 2021-10-29 | 2021-12-17 | 上海樊容工业技术中心 | Pump cavity structure and pump body structure of doublestage roots pump |
| CN115388005A (en) * | 2022-08-16 | 2022-11-25 | 北京通嘉宏瑞科技有限公司 | Multistage Roots vacuum pump for reducing pressure pulsation and working method thereof |
| CN117514806A (en) * | 2023-12-18 | 2024-02-06 | 坚固工业设备(杭州)有限公司 | Rotor structure of vertical claw type dry vacuum pump, vertical vacuum pump and use method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05118291A (en) * | 1991-09-05 | 1993-05-14 | Ebara Corp | Rotor for multi-stage vacuum pump and manufacture thereof |
| CN2667203Y (en) * | 2003-11-06 | 2004-12-29 | 巴德纯 | Multi-stage Roots oil-free vacuum pump |
| CN201074591Y (en) * | 2007-09-07 | 2008-06-18 | 中国科学院沈阳科学仪器研制中心有限公司 | Multilevel Roots dry vacuum pump for straight discharging atmosphere |
| CN101985939A (en) * | 2010-11-30 | 2011-03-16 | 东北大学 | Dry vacuum pump with shaft end dynamic seal structure |
| CN205918594U (en) * | 2016-07-08 | 2017-02-01 | 江阴华西节能技术有限公司 | Multistage dry -type roots vacuum pump |
-
2016
- 2016-07-08 CN CN201610534753.XA patent/CN106014995A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05118291A (en) * | 1991-09-05 | 1993-05-14 | Ebara Corp | Rotor for multi-stage vacuum pump and manufacture thereof |
| CN2667203Y (en) * | 2003-11-06 | 2004-12-29 | 巴德纯 | Multi-stage Roots oil-free vacuum pump |
| CN201074591Y (en) * | 2007-09-07 | 2008-06-18 | 中国科学院沈阳科学仪器研制中心有限公司 | Multilevel Roots dry vacuum pump for straight discharging atmosphere |
| CN101985939A (en) * | 2010-11-30 | 2011-03-16 | 东北大学 | Dry vacuum pump with shaft end dynamic seal structure |
| CN205918594U (en) * | 2016-07-08 | 2017-02-01 | 江阴华西节能技术有限公司 | Multistage dry -type roots vacuum pump |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107473296A (en) * | 2017-09-22 | 2017-12-15 | 陕西厚亿节能环保新材料科技有限公司 | A kind of middle-size and small-size both vapor compression distilling apparatus of water process |
| CN107559196A (en) * | 2017-09-22 | 2018-01-09 | 陕西厚亿节能环保新材料科技有限公司 | A kind of high airproof water-cooled type roots blower equipment |
| CN107473296B (en) * | 2017-09-22 | 2018-07-03 | 陕西厚亿节能环保新材料科技有限公司 | A kind of middle-size and small-size both vapor compression distilling apparatus of water process |
| CN107559196B (en) * | 2017-09-22 | 2018-08-17 | 陕西厚亿节能环保新材料科技有限公司 | A kind of high airproof water-cooled type roots blower equipment |
| CN109854501A (en) * | 2019-03-21 | 2019-06-07 | 南通龙鹰真空科技有限公司 | A kind of multi-stage roots vacuum pump |
| CN113803255A (en) * | 2021-10-29 | 2021-12-17 | 上海樊容工业技术中心 | Pump cavity structure and pump body structure of doublestage roots pump |
| CN115388005A (en) * | 2022-08-16 | 2022-11-25 | 北京通嘉宏瑞科技有限公司 | Multistage Roots vacuum pump for reducing pressure pulsation and working method thereof |
| CN115388005B (en) * | 2022-08-16 | 2023-10-13 | 北京通嘉宏瑞科技有限公司 | Working method of multistage Roots vacuum pump capable of reducing pressure pulsation |
| CN117514806A (en) * | 2023-12-18 | 2024-02-06 | 坚固工业设备(杭州)有限公司 | Rotor structure of vertical claw type dry vacuum pump, vertical vacuum pump and use method |
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| PB01 | Publication | ||
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Application publication date: 20161012 |