CN106640654A - Roots vacuum pump sealing structure - Google Patents
Roots vacuum pump sealing structure Download PDFInfo
- Publication number
- CN106640654A CN106640654A CN201710071122.3A CN201710071122A CN106640654A CN 106640654 A CN106640654 A CN 106640654A CN 201710071122 A CN201710071122 A CN 201710071122A CN 106640654 A CN106640654 A CN 106640654A
- Authority
- CN
- China
- Prior art keywords
- main shaft
- vacuum pump
- oil
- end cap
- cap
- 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
- F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
- F04C27/008—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids for other than working fluid, i.e. the sealing arrangements are not between working chambers of the machine
- F04C27/009—Shaft sealings specially adapted for pumps
Abstract
The invention relates to a roots vacuum pump sealing structure. The part, inserted into an inner hole of an end cover (3), of a main shaft (2) is sleeved with a spiral shaft sleeve (4). The spiral shaft sleeve (4) is sleeved with a sealing bush (5). An annular groove (5.1) is formed in the outer ring face of the end, facing an oil tank cover (10), of the sealing bush (5). An embedded groove (6.1) is formed in the side face, facing the sealing bush (5), of an oil baffle disc (6) mounted on the main shaft (2) in a sleeving manner. The groove wall of the annular groove (5.1) is embedded in the embedded groove (6.1). An oil return groove (3.1) is formed in the hole wall of the inner hole of the end cover (3), one end of the oil return groove (3.1) communicates with the annular groove (5.1), and the other end of the oil return groove (3.1) communicates with the interior of a cavity of the oil tank cover (10). The roots vacuum pump sealing structure is simple, reliable, durable, low in cost and low in power consumption.
Description
Technical field
The present invention relates to a kind of sealing structure, more particularly, to a kind of sealing structure being applied on Roots vaccum pump.
Background technology
At present, either Roots vaccum pump or other gearings, the leakage of its dynamic sealing and integrity problem are always
It is the problem of everybody primary study；And the raising with people to vavuum pump reliability requirement, a kind of simple, reliability of searching,
Practical sealing structure is the direction that vavuum pump manufacturing enterprise is being explored always.
And since being born from last century the forties, the application of Roots vaccum pump is more and more extensive, while everybody is to sieve
The dynamic sealing research of thatch vavuum pump never stops, particularly recent two decades, as Roots vaccum pump is in various special works
Application in skill, it is more and more harsher to the seal request of Roots vaccum pump.The gaseous species of Roots vaccum pump conveying are more and more,
The sealing of Roots vaccum pump must adapt to the needs of various special operation conditions；
But, nowadays the main shaft seal of conventional Roots vaccum pump generally adopts single sealing structure, therefore makes in adverse circumstances
Can all there is oil leak and the contaminated defect of lubricating oil in used time；Roots vacuum pump seal from piston ring packing, lip oil sealing sealing,
Mechanical seal, labyrinth compound seal can not thoroughly solve through the whole journey, all the time vavuum pump sealed reliable sex chromosome mosaicism；
Concretely, piston ring packing, lip oil sealing sealing, mechanical seal, labyrinth compound seal all has to rely on fluid liquid
Cooling and lubrication maintaining normally using for seal, therefore dry seal cannot be realized.And have friction between seal, easily
Abrasion, easily heating, power consumption are big, and most critical is cannot to realize two way seal, once being taken out medium is contained within the non-gas such as dust, liquid
After the material of volume property, above-mentioned several sealing structures all can fail at short notice, affect normally using for Roots vaccum pump.
The content of the invention
It is an object of the invention to overcome above-mentioned deficiency, there is provided a kind of simple, reliable, durable, low cost, sieve of small power consumption
Thatch sealing structure of vacuum pump.
The object of the present invention is achieved like this：
A kind of Roots vacuum pump packing structure, the structure includes the pump housing, wears on the end cap of the two sides of the pump housing and is connected to
Fuel tank cap is fixed with main shaft, and end cap；Above-mentioned main shaft is located on the end in fuel tank cap and is set with travelling gear；The main shaft
Spiral sleeve is set with the part of the endoporus of upper insertion end cap, seal cartridge, the sealing are set with the spiral sleeve
Bushing is provided with cannelure towards on the outer ring face of one end of fuel tank cap, and one is set in the oil baffle disc on main shaft towards seal cartridge
One side on be provided with caulking groove, the cell wall of above-mentioned cannelure is embedded in caulking groove；Arrange on the hole wall of the endoporus of the end cap
There is oil-recovery tank, and one end of oil-recovery tank is communicated to cannelure, the other end is communicated in the cavity of fuel tank cap.
A kind of Roots vacuum pump packing structure of the present invention, the external diameter of the oil baffle disc is not contacted and kept with the endoporus of end cap
Certain interval.
A kind of Roots vacuum pump packing structure of the present invention, does not contact and keeps one between the seal cartridge and spiral sleeve
Fixed gap.
A kind of Roots vacuum pump packing structure of the present invention, is set with bearing, and the endoporus of bearing and end cap on the main shaft
Wall contacts, and the bearing gland being set with the main shaft is pressed together on end cap.
Compared with prior art, the invention has the beneficial effects as follows：
Helixseal simple structure, practicality height that the present invention is adopted, and general numerically controlled processing equipment can meet its processing essence
Degree is required, and it is the key for determining its sealing effectiveness to control the fit clearance between each part, therefore, it is possible to satisfaction well
Sealing effectiveness；Meanwhile, screw dry sealing has low cost of manufacture, simple installation, good reliability, pollution-free, long service life
The advantages of；Roots vaccum pump can enter vacuum pump body, so as to avoid using after helixseal with completely isolated lubricating oil
Oily pollution of the lubricating oil to pumping body, while pollution of the pumped gas to Roots vacuum pump lubricating oilses can also be avoided；In addition, spiral shell
Rotation sealing is not almost generated heat without friction, and to extending Roots vaccum pump service life great role is also had；
The present invention operationally, when lubricating oil enters the position of oil baffle disc, is got rid of lubricating oil by the high speed rotation of oil baffle disc
From on end cap inner hole wall and in the cannelure of seal cartridge, the lubricating oil into cannelure using falling end cap down again from gravity
Finally backflow in the oil-recovery tank of endoporus bottom in fuel tank, so can completely block lubricating oil in the pump housing, it is to avoid lubricate
Pollution of the oil to pumped gas in the pump housing；
Meanwhile, the main shaft of vavuum pump drives the rotation of the superhigh speed of spiral sleeve one when high speed rotates, at a high speed the spiral sleeve of rotation
Can produce one it is counter push away cyclone, this is counter to push away the pernicious gas that cyclone can prevent in the pump housing either dust or liquid medium enters
Enter grease-box and destruction is produced to lubricating oil；Compare with traditional labyrinth seal, mechanical seal, lip packing, it is this double
To sealing structure have simple structure, good reliability, manufacture low cost, using the long-life many advantages, such as.
Description of the drawings
Fig. 1 is a kind of structural representation of Roots vacuum pump packing structure of the invention.
Fig. 2 is a kind of partial enlarged drawing of Roots vacuum pump packing structure of the invention.
Wherein：
The pump housing 1, main shaft 2, end cap 3, spiral sleeve 4, seal cartridge 5, oil baffle disc 6, bearing 7, bearing gland 8, travelling gear 9,
Fuel tank cap 10；
Oil-recovery tank 3.1；
Cannelure 5.1；
Caulking groove 6.1.
Specific embodiment
Referring to Fig. 1 and Fig. 2, a kind of Roots vacuum pump packing structure according to the present invention, the structure includes the pump housing 1,
Wear to be connected on main shaft 2, and end cap 3 on the end cap 3 of the two sides of the pump housing 1 and be fixed with fuel tank cap 10；Above-mentioned main shaft 2 is located at oil
Travelling gear 9 is set with end in case lid 10；
Spiral sleeve 4 is set with the part of the endoporus that end cap 3 is inserted on the main shaft 2（Spiral sleeve 4 is on the face of axle sleeve outer ring
It is provided with the axle sleeve structure of the spiral line of rabbet joint）, seal cartridge 5 is set with the spiral sleeve 4, the seal cartridge 5 is towards oil
Cannelure 5.1 is provided with the outer ring face of one end of case lid 10, one is set in the oil baffle disc 6 on main shaft 2 towards seal cartridge 5
Caulking groove 6.1 is provided with one side, the cell wall of above-mentioned cannelure 5.1 is embedded in caulking groove 6.1；The external diameter of oil baffle disc 6 and end cap 3
Endoporus do not contact and keep certain interval, consequently, it is possible to seal cartridge 5 is fastened in the end cap 3 of vavuum pump, seal cartridge
5 one end outer ring is provided with cannelure 5.1, and is mutually twisted and is formed a kind of stereo labyrinth sealing with certain interval with oil baffle disc 6
Structure；
Oil-recovery tank 3.1 is provided with the hole wall of the endoporus of the end cap 3, and one end of oil-recovery tank 3.1 is communicated to cannelure 5.1,
The other end is communicated in the cavity of fuel tank cap 10；It is set with bearing 7 on the main shaft 2, and the inner hole wall phase of bearing 7 and end cap 3
Contact, the bearing gland 8 being set with the main shaft 2 is pressed together on end cap 3；
When using, the band synchronous rotary of nutating gear 9 when main shaft 2 rotates, the lubricating oil in fuel tank cap 10 is transmitted gear 9 and flies
Splash on the bearing 7 in end cap 3, oil baffle disc 6 is by the endoporus got rid of into the lubricating oil in bearing 7 to end cap 3 and is arranged in
In the oil-recovery tank 3.1 of the one end of seal cartridge 5 in end cap 3, lubricating oil is finally flow back in fuel tank cap 10 by oil-recovery tank 3.1,
The lubricating oil in fuel tank cap 10 can be so prevented to enter in the pump housing 1；Meanwhile, spiral sleeve 4 can produce when rotated a face
To the propulsive thrust of the pump housing 1, this propulsive thrust can prevent the medium in the pump housing 1 from entering in fuel tank cap 10；Above-mentioned sealing can hinder
The only mutual pollution of lubricating oil and pumped gas is interfered, and the service life to being taken out medium and to vavuum pump has well
Effect；
In addition：It should be noted that above-mentioned specific embodiment is only a prioritization scheme of this patent, those skilled in the art
Any change or improvement that member is done according to above-mentioned design, within the protection domain of this patent.
Claims (4)
1. a kind of Roots vacuum pump packing structure, the structure includes the pump housing（1）, the pump housing（1）Two sides end cap
（3）On wear and be connected to main shaft（2）, and end cap（3）On be fixed with fuel tank cap（10）；Above-mentioned main shaft（2）Positioned at fuel tank cap（10）Interior
Travelling gear is set with end（9）；It is characterized in that：
The main shaft（2）Upper insertion end cap（3）Endoporus part on be set with spiral sleeve（4）, the spiral sleeve（4）On
It is set with seal cartridge（5）, the seal cartridge（5）Towards fuel tank cap（10）One end outer ring face on be provided with cannelure
（5.1）, one is set in main shaft（2）On oil baffle disc（6）Towards seal cartridge（5）One side on be provided with caulking groove（6.1）, on
State cannelure（5.1）Cell wall be embedded at caulking groove（6.1）It is interior；The end cap（3）Endoporus hole wall on be provided with oil-recovery tank
（3.1）, and oil-recovery tank（3.1）One end be communicated to cannelure（5.1）, the other end is communicated to fuel tank cap（10）Cavity in.
2. as claimed in claim 1 a kind of Roots vacuum pump packing structure, it is characterised in that：The oil baffle disc（6）External diameter with
End cap（3）Endoporus do not contact and keep certain interval.
3. as claimed in claim 1 a kind of Roots vacuum pump packing structure, it is characterised in that：The seal cartridge（5）With spiral
Axle sleeve（4）Between do not contact and keep certain interval.
4. as claimed in claim 1 a kind of Roots vacuum pump packing structure, it is characterised in that：The main shaft（2）On be set with axle
Hold（7）, and bearing（7）With end cap（3）Inner hole wall contact, the main shaft（2）The bearing gland of upper suit（8）It is pressed together on end
Lid（3）On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710071122.3A CN106640654A (en) | 2017-02-09 | 2017-02-09 | Roots vacuum pump sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710071122.3A CN106640654A (en) | 2017-02-09 | 2017-02-09 | Roots vacuum pump sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106640654A true CN106640654A (en) | 2017-05-10 |
Family
ID=58844656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710071122.3A Pending CN106640654A (en) | 2017-02-09 | 2017-02-09 | Roots vacuum pump sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106640654A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108204364A (en) * | 2017-12-29 | 2018-06-26 | 浙江创为真空设备股份有限公司 | A kind of Roots vaccum pump shaft seal structure |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6312897A (en) * | 1986-06-30 | 1988-01-20 | Anretsuto:Kk | Oilless shaft seal mechanism of vacuum roots blower |
| CN2616716Y (en) * | 2003-04-28 | 2004-05-19 | 浙江新和成股份有限公司 | Improved roots pump |
| CN202867220U (en) * | 2012-10-18 | 2013-04-10 | 江阴天田真空设备制造有限公司 | Mechanical seal structure of roots vacuum pump |
| CN202946387U (en) * | 2012-10-18 | 2013-05-22 | 江阴天田真空设备制造有限公司 | Sealing structure of air-cooling type roots vacuum pump |
| CN204140429U (en) * | 2014-08-09 | 2015-02-04 | 长沙华中一鼓风机有限公司 | Roots blower |
| CN206801876U (en) * | 2017-02-09 | 2017-12-26 | 江阴华西节能技术有限公司 | A kind of Roots vacuum pump packing structure |
-
2017
- 2017-02-09 CN CN201710071122.3A patent/CN106640654A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6312897A (en) * | 1986-06-30 | 1988-01-20 | Anretsuto:Kk | Oilless shaft seal mechanism of vacuum roots blower |
| CN2616716Y (en) * | 2003-04-28 | 2004-05-19 | 浙江新和成股份有限公司 | Improved roots pump |
| CN202867220U (en) * | 2012-10-18 | 2013-04-10 | 江阴天田真空设备制造有限公司 | Mechanical seal structure of roots vacuum pump |
| CN202946387U (en) * | 2012-10-18 | 2013-05-22 | 江阴天田真空设备制造有限公司 | Sealing structure of air-cooling type roots vacuum pump |
| CN204140429U (en) * | 2014-08-09 | 2015-02-04 | 长沙华中一鼓风机有限公司 | Roots blower |
| CN206801876U (en) * | 2017-02-09 | 2017-12-26 | 江阴华西节能技术有限公司 | A kind of Roots vacuum pump packing structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108204364A (en) * | 2017-12-29 | 2018-06-26 | 浙江创为真空设备股份有限公司 | A kind of Roots vaccum pump shaft seal structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102628338A (en) | Novel roller bit sealing ring | |
| CN112065860B (en) | Thin oil lubricating structure of rolling bearing | |
| CN100412398C (en) | Fluid bearing set | |
| CN201330705Y (en) | Mechanical seal structure of Roots vacuum pump | |
| CN108258835A (en) | Heavily loaded Self-aligning flame-proof type thin oil lubricant rolling bearing structure | |
| CN106640654A (en) | Roots vacuum pump sealing structure | |
| CN206874473U (en) | Inside engaged gear oil transfer pump | |
| CN205136017U (en) | A self -lubricating double seal structure for lobe pump drive end | |
| CN206801876U (en) | A kind of Roots vacuum pump packing structure | |
| CN102829183A (en) | Large-diameter high-pressure mechanical sealing device | |
| CN202249772U (en) | Novel roller bit sealing structure | |
| US2366729A (en) | Packing | |
| CN206221516U (en) | A kind of self-lubricating plain bearing seat | |
| CN202531431U (en) | Vertical claw type vacuum pump | |
| CN201065851Y (en) | Combined type shaft seal for slurry pump with self-circulated cooling device | |
| CN203978826U (en) | A kind of magnet fluid sealing Roots pump | |
| CN208997018U (en) | A kind of underwater excavating pump novel bearing component sealing structure | |
| CN102797678A (en) | Shaft sealing structure and rotary fluid machine | |
| CN208294958U (en) | A kind of deep groove ball bearing | |
| CN207001536U (en) | A kind of sealing structure of mine belt conveyor holdback | |
| CN215058230U (en) | Vertical centrifugal slurry pump | |
| CN205446430U (en) | Antifriction bearing structure and gear pump and crescent gear pump of gear pump | |
| EP1634001B1 (en) | Pressure resistant static and dynamic expeller shaft sealing | |
| CN201884245U (en) | Shaft seal structure for vacuum pump | |
| CN213808505U (en) | Oil storage type oil-retaining bearing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170510 |
|
| RJ01 | Rejection of invention patent application after publication |