CN206801876U - A kind of Roots vacuum pump packing structure - Google Patents
A kind of Roots vacuum pump packing structure Download PDFInfo
- Publication number
- CN206801876U CN206801876U CN201720119698.8U CN201720119698U CN206801876U CN 206801876 U CN206801876 U CN 206801876U CN 201720119698 U CN201720119698 U CN 201720119698U CN 206801876 U CN206801876 U CN 206801876U
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- Prior art keywords
- main shaft
- cap
- vacuum pump
- end cap
- oil
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Abstract
A kind of Roots vacuum pump packing structure of the utility model, main shaft（2）Upper insertion end cap（3）Endoporus part on be set with spiral sleeve（4）, the spiral sleeve（4）On be set with seal cartridge（5）, the seal cartridge（5）Towards fuel tank cap（10）One end outer ring face on be provided with annular groove（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）, above-mentioned annular groove（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 annular groove（5.1）, the other end is communicated to fuel tank cap（10）Cavity in.A kind of Roots vacuum pump packing structure of the utility model is simple, reliable, durable, cost is low, small power consumption.
Description
Technical field
A kind of sealing structure is the utility model is related to, more particularly, to a kind of sealing knot applied on Roots vaccum pump
Structure.
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 with raising of the people to vavuum pump reliability requirement, find it is a kind of it is simple, reliable,
Practical sealing structure is vavuum pump manufacturing enterprise always in the direction of exploration.
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 in the late 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 the main shaft seal of nowadays conventional Roots vaccum pump generally uses single sealing structure, therefore in severe ring
Border using when oil leak and the contaminated defect of lubricating oil can all occur；Roots vacuum pump seal is from piston ring packing, lip oil sealing
Sealing, mechanical seal, labyrinth compound seal through the whole journey, can not thoroughly solve vavuum pump sealed reliable sex chromosome mosaicism all the time；
Concretely, piston ring packing, lip oil sealing sealing, mechanical seal, labyrinth compound seal all have to rely on fluid
The cooling of liquid and lubrication maintain the normal use of seal, therefore can not realize dry seal.And rubbed between seal
To wipe, easy to wear, easy heating, power consumption are big, and most critical is can not to realize two way seal, once taken out in medium containing dust, liquid
After material Deng non-pneumatic property, above-mentioned several sealing structures can all fail in a short time, influence the normal of Roots vaccum pump
Use.
The content of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, there is provided one kind is simple, reliable, durable, cost is low, small power consumption
Roots vacuum pump packing structure.
What the purpose of this utility model was realized in：
A kind of Roots vacuum pump packing structure, the structure include the pump housing, worn on the end cap of the two sides of the pump housing
Main shaft is connected to, and fuel tank cap is fixed with end cap；Travelling gear is set with the end that above-mentioned main shaft is located in fuel tank cap；It is described
Inserted on main shaft on the part of the endoporus of end cap and be set with spiral sleeve, seal cartridge is set with the spiral sleeve, it is described
For seal cartridge towards being provided with annular groove on the outer ring face of one end of fuel tank cap, one is set in oil baffle disc on main shaft towards sealing
Caulking groove is provided with the one side of bushing, the cell wall of above-mentioned annular groove is in caulking groove；On the hole wall of the endoporus of the end cap
Oil-recovery tank is provided with, and one end of oil-recovery tank is communicated to annular groove, the other end is communicated in the cavity of fuel tank cap.
A kind of Roots vacuum pump packing structure of the utility model, the external diameter of the oil baffle disc do not contact simultaneously with the endoporus of end cap
Keep certain interval.
A kind of Roots vacuum pump packing structure of the utility model, does not contact and protects between the seal cartridge and spiral sleeve
Hold certain interval.
A kind of Roots vacuum pump packing structure of the utility model, is set with bearing on the main shaft, and bearing and end cap
Inner hole wall is in contact, and the bearing gland being set with the main shaft is pressed together on end cap.
Compared with prior art, the beneficial effects of the utility model are：
The utility model use helixseal is simple in construction, practicality is high, and general numerically controlled processing equipment can meet
Its requirement on machining accuracy, and it is to determine the key of its sealing effectiveness to control the fit clearance between each part, therefore can be very
Good meets sealing effectiveness；Meanwhile screw dry sealing has that manufacturing cost is low, simple installation, good reliability, it is pollution-free, make
The advantages that with long lifespan；After Roots vaccum pump uses helixseal, vacuum pump body can be entered with completely isolated lubricating oil, from
And lubricating oil is avoided to being evacuated the oily pollution of body, while dirt of the pumped gas to Roots vacuum pump lubricating oilses can also be avoided
Dye；In addition, helixseal is not almost generated heat without friction, great role is also had to extending Roots vaccum pump service life；
At work, when lubricating oil enters the position of oil baffle disc, being rotated by the high speed of oil baffle disc will for the utility model
Lubricating oil throw away on end cap inner hole wall and the annular groove of seal cartridge in, into annular groove lubricating oil utilize from gravity again under
Fall in the oil-recovery tank of end cap endoporus bottom and finally backflow into fuel tank, can so block lubricating oil to enter in the pump housing completely,
Avoid pollution of the lubricating 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, the spiral of high speed rotation when high speed rotates
Axle sleeve 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 is situated between
Matter enters grease-box and produces destruction to lubricating oil；Compared with traditional labyrinth seal, mechanical seal, lip packing, this
Kind Bidirectional seal structure has many advantages, such as simple in construction, good reliability, manufacture is inexpensive, using the long-life.
Brief description of the drawings
Fig. 1 is a kind of structural representation of Roots vacuum pump packing structure of the utility model.
Fig. 2 is a kind of partial enlarged drawing of Roots vacuum pump packing structure of the utility model.
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, driving cog
Wheel 9, fuel tank cap 10；
Oil-recovery tank 3.1；
Annular groove 5.1；
Caulking groove 6.1.
Embodiment
Referring to Fig. 1 and Fig. 2, a kind of Roots vacuum pump packing structure that the utility model is related to, the structure includes pump
Body 1, wear on the end cap 3 of the two sides of the pump housing 1 and be connected to main shaft 2, and fuel tank cap 10 is fixed with end cap 3；Above-mentioned 2, main shaft
In being set with travelling gear 9 on the end in fuel tank cap 10；
Inserted on the main shaft 2 on the part of the endoporus of end cap 3 and be set with spiral sleeve 4（Spiral sleeve 4 is axle sleeve outer ring
The axle sleeve structure of the spiral line of rabbet joint is provided with face）, seal cartridge 5, the court of seal cartridge 5 are set with the spiral sleeve 4
It is provided with annular groove 5.1 on to the outer ring face of one end of fuel tank cap 10, one is set in oil baffle disc 6 on main shaft 2 towards sealing lining
Caulking groove 6.1 is provided with the one side of set 5, the cell wall of above-mentioned annular groove 5.1 is in caulking groove 6.1；The external diameter of oil baffle disc 6 with
The endoporus of end cap 3 does not contact and keeps certain interval, consequently, it is possible to seal cartridge 5 is fastened in the end cap 3 of vavuum pump, it is close
One end outer ring of envelope bushing 5 is provided with annular groove 5.1, and is mutually twisted with oil baffle disc 6 with certain interval and forms a kind of three-dimensional fan
Palace sealing 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 annular groove
5.1, the other end is communicated in the cavity of fuel tank cap 10；Bearing 7, and the endoporus of bearing 7 and end cap 3 are set with the main shaft 2
Wall is in contact, and the bearing gland 8 being set with the main shaft 2 is pressed together on end cap 3；
In use, the band synchronous rotary of nutating gear 9 when main shaft 2 rotates, the lubricating oil in fuel tank cap 10 are transmitted tooth
Wheel 9, which splashes, to be entered on the bearing 7 in end cap 3, and oil baffle disc 6 gets rid of the lubricating oil entered in bearing 7 the endoporus and cloth to end cap 3
In the oil-recovery tank 3.1 for putting one end of seal cartridge 5 in end cap 3, lubricating oil finally flow back into fuel tank cap 10 by oil-recovery tank 3.1
It is interior, it can so prevent the lubricating oil in fuel tank cap 10 from entering in the pump housing 1；Meanwhile spiral sleeve 4 can produce one when rotated
Towards 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 be with
Prevent the mutual pollution of lubricating oil and pumped gas from interfering, have very well to being taken out medium and service life to vavuum pump
Effect；
In addition：It should be noted that above-mentioned embodiment is only a prioritization scheme of this patent, the skill of this area
Any change or improvement that art personnel are 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 include 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 annular groove
（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 annular groove（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 annular groove（5.1）, the other end is communicated to fuel tank cap（10）Cavity in.
A kind of 2. Roots vacuum pump packing structure as claimed in claim 1, it is characterised in that：The oil baffle disc（6）External diameter with
End cap（3）Endoporus do not contact and maintain gap.
A kind of 3. Roots vacuum pump packing structure as claimed in claim 1, it is characterised in that：The seal cartridge（5）With spiral
Axle sleeve（4）Between do not contact and maintain gap.
A kind of 4. Roots vacuum pump packing structure as claimed in claim 1, 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 be in 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 |
|---|---|---|---|
| CN201720119698.8U CN206801876U (en) | 2017-02-09 | 2017-02-09 | A kind of Roots vacuum pump packing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720119698.8U CN206801876U (en) | 2017-02-09 | 2017-02-09 | A kind of Roots vacuum pump packing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206801876U true CN206801876U (en) | 2017-12-26 |
Family
ID=60729584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720119698.8U Active CN206801876U (en) | 2017-02-09 | 2017-02-09 | A kind of Roots vacuum pump packing structure |
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|---|---|
| CN (1) | CN206801876U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640654A (en) * | 2017-02-09 | 2017-05-10 | 江阴华西节能技术有限公司 | Roots vacuum pump sealing structure |
-
2017
- 2017-02-09 CN CN201720119698.8U patent/CN206801876U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640654A (en) * | 2017-02-09 | 2017-05-10 | 江阴华西节能技术有限公司 | Roots vacuum pump sealing structure |
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| GR01 | Patent grant |