CN104100524A - Roots blower with combined sealing structure - Google Patents

Roots blower with combined sealing structure Download PDF

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Publication number
CN104100524A
CN104100524A CN201410370317.4A CN201410370317A CN104100524A CN 104100524 A CN104100524 A CN 104100524A CN 201410370317 A CN201410370317 A CN 201410370317A CN 104100524 A CN104100524 A CN 104100524A
Authority
CN
China
Prior art keywords
wallboard
casing
driven
driving shaft
right wallboard
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
Application number
CN201410370317.4A
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Chinese (zh)
Inventor
刘士华
高爱珍
胡延凤
侯涛
杜纪明
张学飞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shandong Zhangqiu Blower Co Ltd
Original Assignee
Shandong Zhangqiu Blower Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shandong Zhangqiu Blower Co Ltd filed Critical Shandong Zhangqiu Blower Co Ltd
Priority to CN201410370317.4A priority Critical patent/CN104100524A/en
Publication of CN104100524A publication Critical patent/CN104100524A/en
Pending legal-status Critical Current

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  • Rotary Pumps (AREA)

Abstract

A roots blower with a combined sealing structure comprises a casing, a driving impeller and a driven impeller, wherein the driving impeller and the driven impeller are mounted on a driving shaft and a driven shaft respectively; a left wallboard and a right wallboard are mounted at the two ends of the casing; casing internal side plates are arranged on the inner sides of the left wallboard and the right wallboard respectively; the driving shaft and the driven shaft are arranged on support bearing pedestals arranged on the left wallboard and the right wallboard in a supporting manner; combined sealing pieces are arranged at the combination parts of the driven shaft and the driving shaft with the left wallboard and the right wallboard as well as the casing internal side plates; a driving gear and a driven gear which are mutually meshed are arranged at one ends of the same sides of the driving shaft and the driven shaft, and are arranged inside a main oil tank at the end part of the right wallboard; positioning bearing pedestals are further arranged at the end part of the main oil tank; an auxiliary oil tank is arranged at the end part of the left wallboard; the power input end of the driving shaft extends out of the auxiliary oil tank. The roots blower is excellent in the sealing effect, can effectively avoid the dielectric leakage of conveyed gas, and meets the use requirements of users.

Description

A kind of Roots blower with combined sealing structure
Technical field
The present invention relates to a kind of Roots blower, particularly a kind of Roots blower with combined sealing structure.
Background technique
Roots blower purposes is more and more extensive at present, be generally used for carrying clean air, clean coal gas, sulfur dioxide and some other inert gases, also can be used for carrying other inflammable, explosive, easy erosion, poisonous and special gas, thereby be widely applied to the numerous areas such as petrochemical industry, smelting, chemical fertilizer, mine, light textile, papermaking, aquaculture and sewage treatment.
The Roots blower shaft end seal technology now adopting, is generally labyrinth seal, piston ring sealing, outside framework oil seal filler, polytetrafluoro shaping filler and double mechanical seal etc.Adopt above-mentioned sealing configuration form to carry out shaft end seal, except labyrinth seal and double mechanical seal, all the other sealing configurations all belong to contact seal, contact seal mode is large for the wearing and tearing of Sealing when work, sealed member is shorter working life, need to regularly change, so not only can affect the normal use of equipment, and be unfavorable for the rational and efficient use of resource.In addition, if the medium that user will carry is not for allowing to leak into toxic and harmful in atmosphere, can adopt the shaft end seal mode of double mechanical seal, but in the gas medium of carrying, have molecule, adopt above-mentioned seal form all cannot well solve the problem of above-mentioned existence.
Therefore, for addressing the above problem, be necessary to provide a kind of good sealing effect, the Roots blower that can effectively avoid institute's conveying gas body medium to leak, to meet user's usage requirement.
Summary of the invention
The invention provides a kind of Roots blower with combined sealing structure, it has good sealing effect, wear extent is little, without the frequent sealed member of changing, can effectively avoid carried gas medium to enter in air, avoid the generation of the Leakage Gas problem that gas causes because sealing effect is poor in course of conveying.
In order to address the above problem, the technical solution adopted in the present invention is: a kind of Roots blower with combined sealing structure, the active impeller and the driven impeller that comprise casing and be arranged at casing inside, described active impeller and driven impeller be corresponding being arranged on the inner driving shaft and driven shaft arranging of casing respectively; It is characterized in that, the two end part of described casing are provided with left wallboard and right wallboard, and described left wallboard and right wallboard are bolted on respectively the left and right sides of casing end; The inner side of described left wallboard and right wallboard respectively correspondence is provided with the inner side plate of casing, and the inner side plate of described casing stretches into casing inside;
The outboard end of described left wallboard and right wallboard is corresponding being provided with for supporting the supporting bearing base of driving shaft and driven shaft respectively, the inside of described supporting bearing base is provided with rolling bearing, and described driving shaft and driven shaft are arranged in the active chamber of left wallboard and right wallboard and casing formation by being arranged on rolling bearing and the supporting bearing base at left and right wallboard two end part respectively;
The position combining between the inner side plate of casing that described driven shaft and driving shaft and left wallboard and right wallboard and left wallboard and right wallboard inner side arrange is also respectively arranged with combination seal, on one end of described driving shaft and driven shaft homonymy, correspondence is provided with driving gear and driven gear respectively, described driving gear and driven gear are meshed and form synchronous gear wheel set, described synchronous gear wheel set is arranged in the main fuel tank of right wallboard end, and described main fuel tank is fixed on right wallboard by connecting bolt; End at described main fuel tank is also provided with positioning bearing seat, described positioning bearing seat is arranged on main fuel tank, in described positioning bearing seat, positioning bearing is installed, the right-hand member end of described driving shaft and driven shaft is stretched into respectively in the inner ring that positioning bearing is set in positioning bearing seat; In described left wallboard end, be provided with drop tank, described drop tank is bolted on left wallboard, and the power intake of described driving shaft stretches out the outside of drop tank.
Described left wallboard and right wallboard are open architecture wallboard.
Described combination seal comprises preposition Sealing and primary seal.
The outboard end setting of described left wallboard and right wallboard for supporting in the supporting bearing base of driving shaft and driven shaft, bearing isolator is installed respectively, described bearing isolator is arranged between the inner rolling bearing and bearing support block inwall of installing of supporting bearing base.
Between the inner side plate of described casing and left wallboard and right wallboard, be connected by screw.
The position that described driven gear combines with driven shaft is provided with gear hub, and described gear hub is bolted on driven gear.
The invention has the beneficial effects as follows:
1. the invention solves the poor problem of shaft end seal device sealing effect of current existing Roots blower, at axle head, easily combination seal is set the position of gas leakage, realized the zero leakage of institute's fed sheet of a media gas, it has good sealing effect, the feature of long service life, stable and reliable operation.
2. the contactless combination seal that this invention adopts is compared with other noncontact seal, and sealing gas leakage rate is little, can effectively avoid institute's fed sheet of a media to leak the impact for external environment, has met client's different requirements.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention;
Fig. 2 is the A-A sectional view of Fig. 1;
In figure: 1-casing, 2-be impeller, the driven impeller of 3-, 4-driving shaft, 41-power intake, 5-driven shaft, the left wallboard of 6-, the right wallboard of 7-, the inner side plate of 8-casing, 9-supporting bearing base, 10-rolling bearing, 11-combination seal, 111-primary seal, the preposition Sealing of 112-, 12-driving gear, 13-driven gear, 14-main fuel tank, 15-positioning bearing seat, 16-positioning bearing, 17-drop tank, 18-bearing isolator, 19-gear hub initiatively.
Embodiment
For clearly demonstrating the technical characterstic of this programme, below by an embodiment, and in conjunction with its accompanying drawing, this programme is set forth.
As shown in Figure 1-2, a kind of Roots blower with combined sealing structure of the present invention, active impeller 2 and driven impeller 3 that it comprises casing 1 and is arranged at casing 1 inside, described active impeller 2 and driven impeller 3 be corresponding being arranged on the inner driving shaft 4 and driven shaft 5 arranging of casing 1 respectively, the power intake 41 of described driving shaft 4 stretches out the outside of drop tank, be used for connecting power motor, for Roots blower provides external impetus.The two end part of described casing 1 are provided with left wallboard 6 and right wallboard 7, and described left wallboard 6 and right wallboard 7 are open architecture wallboard.Described left wallboard 6 and right wallboard 7 are bolted on respectively the left and right sides of casing 1 end.The inner side of described left wallboard 6 and right wallboard 7 respectively correspondence is provided with the inner side plate 8 of casing, the inner side plate 8 of described casing stretches into casing 1 inside, between the inner side plate 8 of casing and left wallboard 6 and right wallboard 7, be connected by screw the inner side plate 8 of the casing that so conveniently carry out demolition and replacement.
The left and right wallboard with open architecture described above coordinates with the inner side plate of casing, can realize active impeller and the precise positioning of driven impeller in casing of Roots blower on the one hand, thereby assurance is arranged on the installation precision of the rolling bearing at left and right wallboard two end part; Also met on the other hand the demand of combination seal installing space in Roots blower.In addition, open architecture wallboard can also guarantee that sealing technology gas directly enters atmosphere, and can not enter in main fuel tank and drop tank.
The outboard end of described left wallboard 6 and right wallboard 7 is corresponding being provided with for supporting the supporting bearing base 9 of driving shaft 4 and driven shaft 5 respectively, the inside of described supporting bearing base 9 is provided with rolling bearing 10, and described driving shaft 4 and driven shaft 5 are arranged in the active chamber of left wallboard 6 and right wallboard 7 and casing 1 formation by being arranged on rolling bearing 10 and the supporting bearing base 9 at left and right wallboard two end part respectively; The position combining between the inner side plate 8 of casing that described driven shaft 5 and driving shaft 4 and left wallboard 6 and right wallboard 7 and left wallboard 6 and right wallboard 7 inner sides arrange is respectively arranged with combination seal 11, and described combination seal 11 comprises primary seal 111 and preposition Sealing 112.
Described primary seal 111 is a kind of novel noncontact seal parts, what it adopted is dry running gas seal, its working principle is to offer seal groove on the rotating ring of sealing or the sealing surface of stationary ring (generally on rotating ring), during dry running gas seal rotating ring rotation, sealing gas is inhaled in dynamic pressure groove, enters the gas of sealing surface after compression, gas pressure raises, under this pressure-acting, two seal faces are open, can reach like this effect of non-contact sealing.What in addition, described preposition Sealing 112 adopted is carbon ring seal part or Comb Labyrinth Seals part; Carbon ring seal part belongs to contact seal, and Comb Labyrinth Seals belongs to noncontact seal.
Preposition Sealing 111 described above and primary seal 112 are combined to the combination seal 11 that composition is new, this combination seal is good sealing effect not only, but also can effectively reduce in working procedure the wearing and tearing for sealed member, can greatly extend the working life of Sealing, effectively save production cost, improved the working efficiency of equipment.
For realizing passing into of sealing medium, on primary seal and preposition Sealing, correspondence is provided with primary seal sealing medium and passes into hole and preposition sealing ventilation hole respectively.
During work, to preposition Sealing 111 is interior, first pass into preposition high pressure sealing gas, thereby molecule enters sealing position below in prevention fed sheet of a media, then pass into blanket gas in primary seal 112, can guarantee like this Roots blower fed sheet of a media gas realization " zero leakage ".
In order to guarantee the synchronous rotary of active impeller 2 and driven impeller 3, on one end of described driving shaft 4 and driven shaft 5 homonymies, correspondence is provided with driving gear 12 and driven gear 13 respectively, described driving gear 12 and driven gear 13 are meshed and form synchronous gear wheel set, and synchronous gear wheel set has realized initiatively impeller and the counterrotating of driven impeller constant speed.Synchronous gear wheel set described above is arranged in the main fuel tank 14 of right wallboard 6 ends, described main fuel tank 14 is fixed on right wallboard 6 by connecting bolt, main fuel tank 14 mainly plays the synchronous lubricated effect of this wheel set, can effectively reduce in working procedure because of the excessive wearing and tearing that synchronous gear wheel set is caused of frictional force.
In addition, end at described main fuel tank 14 is also provided with positioning bearing seat 15, described positioning bearing seat 15 is arranged on main fuel tank 14, in described positioning bearing seat 15, positioning bearing 16 is installed, the right-hand member end of described driving shaft 4 and driven shaft 5 is stretched into respectively in the interior inner ring that positioning bearing 16 is set of positioning bearing seat 15, the further precise positioning of realizing for driving shaft 4 and driven shaft 5 by positioning bearing 16, thus the stationarity that active impeller 2 and driven impeller 3 turn round when work guaranteed.
In described left wallboard 6 ends, be also provided with drop tank 17, described drop tank 17 is bolted on left wallboard 6, drop tank is set in described left wallboard end and is mainly used in the spring bearing in supporting bearing base on the left of being arranged to be lubricated, thereby guarantee the stationarity that driving shaft and driven shaft turn round.
The outboard end setting of described left wallboard 6 and right wallboard 7 for supporting in the supporting bearing base 9 of driving shaft 4 and driven shaft 5, bearing isolator 18 is installed respectively, described bearing isolator 18 is arranged between the inner rolling bearing 10 and bearing support block 9 inwalls of installing of supporting bearing base 18, when supporting bearing base 18 occurs that mist of oil leaks, can not impact dry running gas seal so yet.
The position that described driven gear 12 combines with driven shaft 5 is provided with gear hub 19, and described gear hub 19 is bolted on driven gear 12, more convenient to install like this and dismounting driven gear.
The present invention has adopted combined type non-contact sealing, has realized the zero leakage of Roots blower fed sheet of a media gas, and it is little that it has wearing and tearing, and leakage rate is little, long service life, the feature of economic environmental protection.
The above is the preferred embodiment of the present invention, for those skilled in the art, under the premise without departing from the principles of the invention, can also make some improvements and modifications, and these improvements and modifications are also regarded as protection scope of the present invention.

Claims (6)

1. a Roots blower with combined sealing structure, the active impeller and the driven impeller that comprise casing and be arranged at casing inside, described active impeller and driven impeller be corresponding being arranged on the inner driving shaft and driven shaft arranging of casing respectively; It is characterized in that, the two end part of described casing are provided with left wallboard and right wallboard, and described left wallboard and right wallboard are bolted on respectively the left and right sides of casing end; The inner side of described left wallboard and right wallboard respectively correspondence is provided with the inner side plate of casing, and the inner side plate of described casing stretches into casing inside;
The outboard end of described left wallboard and right wallboard is corresponding being provided with for supporting the supporting bearing base of driving shaft and driven shaft respectively, the inside of described supporting bearing base is provided with rolling bearing, and described driving shaft and driven shaft are arranged in the active chamber of left wallboard and right wallboard and casing formation by being arranged on rolling bearing and the supporting bearing base at left and right wallboard two end part respectively;
The position combining between the inner side plate of casing that described driven shaft and driving shaft and left wallboard and right wallboard and left wallboard and right wallboard inner side arrange is also respectively arranged with combination seal, on one end of described driving shaft and driven shaft homonymy, correspondence is provided with driving gear and driven gear respectively, described driving gear and driven gear are meshed and form synchronous gear wheel set, described synchronous gear wheel set is arranged in the main fuel tank of right wallboard end, and described main fuel tank is fixed on right wallboard by connecting bolt;
End at described main fuel tank is also provided with positioning bearing seat, described positioning bearing seat is arranged on main fuel tank, in described positioning bearing seat, positioning bearing is installed, the right-hand member end of described driving shaft and driven shaft is stretched into respectively in the inner ring that positioning bearing is set in positioning bearing seat; In described left wallboard end, be provided with drop tank, described drop tank is bolted on left wallboard, and the power intake of described driving shaft stretches out the outside of drop tank.
2. a kind of Roots blower with combined sealing structure as claimed in claim 1, is characterized in that, described left wallboard and right wallboard are open architecture wallboard.
3. a kind of Roots blower with combined sealing structure as claimed in claim 1, is characterized in that, described combination seal comprises preposition Sealing and primary seal.
4. a kind of Roots blower with combined sealing structure as claimed in claim 1, it is characterized in that, the outboard end setting of described left wallboard and right wallboard for supporting in the supporting bearing base of driving shaft and driven shaft, bearing isolator is installed respectively, described bearing isolator is arranged between the inner rolling bearing and bearing support block inwall of installing of supporting bearing base.
5. a kind of Roots blower with combined sealing structure as claimed in claim 1, is characterized in that, between the inner side plate of described casing and left wallboard and right wallboard, is connected by screw.
6. a kind of Roots blower with combined sealing structure as claimed in claim 1, is characterized in that, the position that described driven gear combines with driven shaft is provided with gear hub, and described gear hub is bolted on driven gear.
?
CN201410370317.4A 2014-07-31 2014-07-31 Roots blower with combined sealing structure Pending CN104100524A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410370317.4A CN104100524A (en) 2014-07-31 2014-07-31 Roots blower with combined sealing structure

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Application Number Priority Date Filing Date Title
CN201410370317.4A CN104100524A (en) 2014-07-31 2014-07-31 Roots blower with combined sealing structure

Publications (1)

Publication Number Publication Date
CN104100524A true CN104100524A (en) 2014-10-15

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104405621A (en) * 2014-11-29 2015-03-11 山东明天机械有限公司 Wallboard for steam compressor
CN104976116A (en) * 2015-06-25 2015-10-14 山东省章丘鼓风机股份有限公司 Roots blower for conveying steam medium
CN108317080A (en) * 2018-04-17 2018-07-24 山东省章丘鼓风机股份有限公司 A kind of explosion-proof Roots blower
CN109915214A (en) * 2019-03-31 2019-06-21 丹东隆强科技有限责任公司 Steam-water helical screw power machine with axial thrust balancing devices
CN118128756A (en) * 2024-05-08 2024-06-04 德耐尔节能科技(上海)股份有限公司 Screw air compressor with axial balancing device
CN118128756B (en) * 2024-05-08 2024-07-02 德耐尔节能科技(上海)股份有限公司 Screw air compressor with axial balancing device

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2116634A (en) * 1982-03-10 1983-09-28 Fiat Auto Spa Rotary positive-displacement fluid-machines
JPH07111186B2 (en) * 1992-09-21 1995-11-29 株式会社アンレット Roots blower seal configuration
CN2830714Y (en) * 2005-07-19 2006-10-25 长沙鼓风机厂有限责任公司 Large Roots blower
CN201858150U (en) * 2010-11-23 2011-06-08 山东章晃机械工业有限公司 Overlapping seal type Roots fan
CN202273856U (en) * 2011-10-26 2012-06-13 长沙鼓风机厂有限责任公司 Dry gas sealed roots blower
CN202273859U (en) * 2011-10-26 2012-06-13 长沙鼓风机厂有限责任公司 Combined sealing roots blower
CN202391750U (en) * 2011-12-20 2012-08-22 攀钢集团有限公司 Sulphur dioxide fan
CN204003450U (en) * 2014-07-31 2014-12-10 山东省章丘鼓风机股份有限公司 A kind of Roots blower with combined sealing structure

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2116634A (en) * 1982-03-10 1983-09-28 Fiat Auto Spa Rotary positive-displacement fluid-machines
JPH07111186B2 (en) * 1992-09-21 1995-11-29 株式会社アンレット Roots blower seal configuration
CN2830714Y (en) * 2005-07-19 2006-10-25 长沙鼓风机厂有限责任公司 Large Roots blower
CN201858150U (en) * 2010-11-23 2011-06-08 山东章晃机械工业有限公司 Overlapping seal type Roots fan
CN202273856U (en) * 2011-10-26 2012-06-13 长沙鼓风机厂有限责任公司 Dry gas sealed roots blower
CN202273859U (en) * 2011-10-26 2012-06-13 长沙鼓风机厂有限责任公司 Combined sealing roots blower
CN202391750U (en) * 2011-12-20 2012-08-22 攀钢集团有限公司 Sulphur dioxide fan
CN204003450U (en) * 2014-07-31 2014-12-10 山东省章丘鼓风机股份有限公司 A kind of Roots blower with combined sealing structure

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104405621A (en) * 2014-11-29 2015-03-11 山东明天机械有限公司 Wallboard for steam compressor
CN104976116A (en) * 2015-06-25 2015-10-14 山东省章丘鼓风机股份有限公司 Roots blower for conveying steam medium
CN108317080A (en) * 2018-04-17 2018-07-24 山东省章丘鼓风机股份有限公司 A kind of explosion-proof Roots blower
CN108317080B (en) * 2018-04-17 2024-03-01 山东省章丘鼓风机股份有限公司 Explosion-proof roots blower
CN109915214A (en) * 2019-03-31 2019-06-21 丹东隆强科技有限责任公司 Steam-water helical screw power machine with axial thrust balancing devices
CN118128756A (en) * 2024-05-08 2024-06-04 德耐尔节能科技(上海)股份有限公司 Screw air compressor with axial balancing device
CN118128756B (en) * 2024-05-08 2024-07-02 德耐尔节能科技(上海)股份有限公司 Screw air compressor with axial balancing device

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Application publication date: 20141015