CN2489116Y - Roots blower with double circular arc-shaped impellers - Google Patents
Roots blower with double circular arc-shaped impellers Download PDFInfo
- Publication number
- CN2489116Y CN2489116Y CN 01247158 CN01247158U CN2489116Y CN 2489116 Y CN2489116 Y CN 2489116Y CN 01247158 CN01247158 CN 01247158 CN 01247158 U CN01247158 U CN 01247158U CN 2489116 Y CN2489116 Y CN 2489116Y
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- CN
- China
- Prior art keywords
- impeller
- casing
- circular arc
- roots blower
- utility
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- Expired - Fee Related
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- 238000013016 damping Methods 0.000 claims abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 229920002978 Vinylon Polymers 0.000 abstract description 5
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 abstract description 4
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 abstract description 4
- 239000007789 gas Substances 0.000 abstract 3
- 238000007789 sealing Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000008093 supporting effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The utility model relates to a roots blower of two convex impellers. It is mainly used for equipment for conveying acetylene gas on a production line of a vinylon plant. The utility model discloses design into the tangent crest of bi-arc with the leaf shape of impeller, set up one section and the endocentric circular arc of impeller center pin at the impeller peak, set up like this, the minimum space of impeller and casing is a face, forms the slot damping, still set up two straight lines at the circular arc both ends, these two straight lines and the minimum space of casing and circular arc section equal, two straight lines are as supplementary seal line, its gas of leaking bumps a right angle plane, form the vortex air current and further seal, reduce the internal leakage of impeller and casing. The utility model discloses not only improve the area utilization coefficient, satisfied the strength requirement, the internal leakage volume that lets out that significantly reduces simultaneously to roots blower's export discharge capacity has been improved. The utility model discloses not only be applicable to vinylon factory production line, but also be applicable to the transport of other various gases.
Description
One, technical field
The utility model relates to Roots blower, particularly relates to being mainly used in the improvement that vinylon plant is carried the Roots blower of acetylene gas.
Two, background technique
Roots blower mainly is the equipment that is used for carrying on the vinylon plant production line acetylene gas.At present, the used equipment of China's vinylon plant all is the production line of introducing the Japan's design fifties.These production lines can not satisfy the requirement that output need improve in each factory, so must undergo technological transformation on old production line, could improve output.But the key equipment Roots blower of carrying acetylene gas on the production line has but become the obstacle of further raising output, because of the maximum force feed amount of M-6060G type Roots blower that original Japan produces has only per hour 4200 cubic metres.In order to be complementary, original production line output is further improved just Roots blower force feed amount must be brought up to production line.In addition, require Roots blower to improve the outlet discharge capacity, and its mounting point can not change (comprise basic structure and volume and with production line on supporting can not changing other pipelines, being connected of equipment).Therefore to satisfy aforementioned requirement, only in the design of Roots air blower shape, work hard,, or reduce internal leakage, improve gas force feed amount with the raising area utilization factor.
Originally each factory uses the M-6060G type roots blower that Japan produces, its impeller tooth peak is a circular arc, this impeller tooth peak and other leaf comparison, its area utilization factor is little, promptly under the condition of identical casing volume, circular arc impeller volume is big, and it is also big with the volume in the casing to stand, thereby the gas station is just little with the volume of casing, when the impeller gas that force feed comes out of whenever going around also little.Secondly, circular arc impeller tooth peak maximum and casing minimum aperture form straight line, and the sealability of impeller and casing is bad like this, causes the gas internal leakage big.Be characterized in the impeller intensity height.Impeller tooth peak shape also has involute shape and epicycloid shape.Involute shape impeller area utilization factor is big, but intensity is little, only is applicable to float amount Roots blower.Epicycloid shape impeller is bigger than circular arc impeller volume, and intensity is also higher.
Three, summary of the invention
The utility model proposes a kind of Roots blower of impeller tooth peak appearance uniqueness just at the deficiency of above-mentioned existing Roots blower, is intended to give simultaneously that its gas outlet discharge capacity is big, pressure reduction is big and volume is little and the favorable mechanical sealability.
The utility model mainly is made up of gear, impeller shaft, impeller, bearing, casing, wallboard etc.
The technical solution adopted in the utility model is: with the leaf tangent tooth peak of two circular arcs that is designed to uniqueness of Roots air blower; At the impeller peak one section one section circular arc concentric with impeller middle spindle is set again; The minimum aperture of impeller and casing is a face like this, forms the slot damping, straight line and casing also respectively is set at the circular arc two ends simultaneously keeps minimum aperture.And two straight lines equate with the minimum aperture and the arc section distance of casing, and as second line of seal, the gas that two straight lines leak is run into a right-angle plane, and gas forms swirling air stream and further seals, and can significantly reduce the internal leakage of impeller and casing like this.
The utility model is compared with existing M-6060G type Roots blower, and the identical situation of its volume and installation dimension has improved area utilization factor, satisfied requirement of strength, reduce internal leakage, improved the outlet discharge capacity effectively, thereby further improved original production line output.The utility model Roots blower gas is sent flow and is per hour 5000 cubic metres.Sending pressure is 8500 column.And vibration is little in running, and mechanical sealing performance is good.If the Roots blower height and the width are identical, and length increases, and it is bigger to send flow, and pressure is also bigger.
Four, description of drawings
Fig. 1 is a Roots blower structural profile schematic representation.
Fig. 2 is two tangent tooth peak structural representations of circular arc for Roots air blower.
Fig. 3 is a circle-arc tooth peak structural representation for existing M-6060G type Roots air blower.
1,3, gear sequence number implication among the figure:; 2, active impeller shaft; 4, driven impeller shaft; 5, stationary seat; 6,15,16,17 bearings; 7, axle sleeve; 8,13, wallboard; 9, mechanical sealing static ring; 10, mechanical sealing linkage ring; 11, impeller; 12, casing; 14, tooth coupling.
Five, embodiment
The utility model further specifies its structure, working principle and embodiment in conjunction with the accompanying drawings.
Among Fig. 1, fixing respectively left side wallboard 8 and right side wallboard 13 on casing 12 bi-side, stationary seat 5 is separately fixed at again in the left and right side wallboard hole.Impeller 11 bakings are contained on active impeller shaft 2 and the driven impeller shaft 4, and with flat strong fixing.Initiatively impeller shaft 2 is by bearing 16,17 supportings, and driven impeller shaft 4 is by bearing 6,15 supportings, and mechanical sealing linkage ring 10 is fixed on the axle sleeve 7, and axle sleeve 7 rotates with active impeller shaft, driven impeller shaft respectively again.Mechanical sealing static ring 9 is installed in stationary seat 5 holes, fits by spring and rotating ring 10 in the stationary ring plane, and casing 12 forms closed chamber like this.
This Roots blower working principle is to make the transmission shaft rotation by motor by the v belt transmission, transmission shaft connects with active impeller shaft 2 usefulness tooth couplings 14, drive initiatively impeller shaft rotation by tooth coupling 14 so again, initiatively impeller shaft 2, driven impeller shaft 4 are respectively adorned the gear 1,3 of an identical number of teeth, and being cogged by the active impeller shaft drives driven impeller shaft rotation again.The impeller at the two circular arc phase cutting peaks of the utility model is contained on active impeller shaft 2, the driven impeller shaft 4, and meshing and doing synchronous rotation in airtight casing, two impeller slynesses suck pressurized gas, when impeller rotates to the side moment of supplying gas, because the back-pressure effect of air under pressure, and gas is gone out by force feed, realize the purpose of supercharging conveying gas.
Among Fig. 2, being meshing with each other of Gothic impeller, the pitch circle that is equivalent to two same diameter is tangential on the P point, and makes pure rolling, and the center of circle of two pitch circles is respectively O
1And O
2, radius is r '.So-called two circular arc type impeller is meant impeller pitch circle tooth peak profile of tooth in addition
Circular arc and
Circular arc, two circular arcs are tangent, are meant that the impeller pitch circle is with interior tooth paddy profile of tooth, C
1D
1Curve is a tooth peak circular arc
Envelope, D
1E
1Curve is again a tooth peak circular arc
Envelope, during work, the concentric arc section of impeller middle spindle that is provided with at the impeller peak
With circular arc
Make pure rolling.With O
3Be center of circle R
2For radius is made circular arc
, again with O
4Be center of circle R
1For radius is made circular arc
, and make its two circular arc
With
Tangent, with O
1Be center of circle O
1F is that radius is made circular arc
, this circular arc
With with O
4Be center of circle R
1By radius is made circular arc
Intersection point be A
1Point, i.e. O
1A
1And O
1F two straight lines equate, circular arc
For with O
1Be center of circle O
1H is the circular arc that radius is done.Two impellers guarantee that the back lash of any point equates when doing rotation synchronously.
Because the utility model is provided with one section circular arc DF concentric with impeller middle spindle at the tangent impeller peak of two circular arcs, it is a face that such setting makes the minimum aperture of impeller and casing, forms the slot damping; Again because be provided with the two straight line B that keep minimum aperture with casing, C, gas passes through B, the gas that C two straight lines leak is respectively run into a right-angle plane, gas forms swirling air stream and further seals, significantly reduce the internal leakage of impeller and casing like this, improve the outlet discharge capacity of Roots blower, thereby improve productivity effect.
Claims (3)
1. the Roots blower of a Gothic impeller, mainly by gear (1) (3), initiatively the wallboard (8) of impeller shaft (2), driven impeller shaft (4), bearing (6) (15) (16) (17), impeller (11), casing (12) and casing both sides and (13) etc. are formed, it is characterized in that the leaf tangent tooth peak of two circular arcs that is designed to uniqueness with impeller (11), two impellers are slick and sly to be meshed, and maintains certain clearance with casing (12).
2. according to the said Roots blower of claim 1, it is characterized in that at impeller (11) peak one section circular arc concentric with impeller middle spindle (DF) being set, being provided with like this and making the impeller (11) and the minimum aperture of casing (12) is a face, forms the slot damping.
3. according to claim 1,2 said Roots blowers, it is characterized in that also at arc section (DF) two-end-point one straight line being set respectively, the minimum aperture of this two straight line (B, C) and casing and arc section (DF) distance equate, and as second line of seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01247158 CN2489116Y (en) | 2001-08-03 | 2001-08-03 | Roots blower with double circular arc-shaped impellers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01247158 CN2489116Y (en) | 2001-08-03 | 2001-08-03 | Roots blower with double circular arc-shaped impellers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2489116Y true CN2489116Y (en) | 2002-05-01 |
Family
ID=33658054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01247158 Expired - Fee Related CN2489116Y (en) | 2001-08-03 | 2001-08-03 | Roots blower with double circular arc-shaped impellers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2489116Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102152071A (en) * | 2011-02-18 | 2011-08-17 | 常州市风机制造有限公司 | Processing technique of Roots blower impeller component |
| CN105540708A (en) * | 2015-12-17 | 2016-05-04 | 王俊坤 | Distilled water preparation apparatus |
| CN111828316A (en) * | 2020-07-30 | 2020-10-27 | 山东章晃机械工业有限公司 | Fan impeller and fan |
| CN111927778A (en) * | 2019-12-31 | 2020-11-13 | 中科九微科技有限公司 | Roots rotor and profile design method thereof |
-
2001
- 2001-08-03 CN CN 01247158 patent/CN2489116Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102152071A (en) * | 2011-02-18 | 2011-08-17 | 常州市风机制造有限公司 | Processing technique of Roots blower impeller component |
| CN102152071B (en) * | 2011-02-18 | 2012-09-26 | 常州市风机制造有限公司 | Processing technique of Roots blower impeller component |
| CN105540708A (en) * | 2015-12-17 | 2016-05-04 | 王俊坤 | Distilled water preparation apparatus |
| CN111927778A (en) * | 2019-12-31 | 2020-11-13 | 中科九微科技有限公司 | Roots rotor and profile design method thereof |
| CN111828316A (en) * | 2020-07-30 | 2020-10-27 | 山东章晃机械工业有限公司 | Fan impeller and fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |