CN206571983U - A kind of gas sealing mechanism - Google Patents
A kind of gas sealing mechanism Download PDFInfo
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- CN206571983U CN206571983U CN201720117465.4U CN201720117465U CN206571983U CN 206571983 U CN206571983 U CN 206571983U CN 201720117465 U CN201720117465 U CN 201720117465U CN 206571983 U CN206571983 U CN 206571983U
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- sealing mechanism
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Abstract
The utility model is related to dry gas mechanically-sealing apparatus, specifically a kind of gas sealing mechanism, the hollow columnar body on the outside of fixing body can be set in including inner chamber, supporter is outward extended with the upside of the body, lower support is outward extended with the downside of body, upper supporter and/or lower support can be fixed on body, and the annular gas receiving space of indent is formed between upper and lower supporter, and the receiving space is connected by the several through holes being opened on body with chamber body.The utility model can be passed through gas in receiving space, gas enters chamber body after several through holes, as chamber body is arranged on fixing body, the gap discharge that then gas can be between chamber body and fixing body, powder etc. can be avoided to enter gap, so as to reach sealed effect, it is ensured that equipment operation is unobstructed.
Description
Technical field
The utility model is related to mechanically-sealing apparatus technical field, specifically a kind of gas sealing mechanism.
Background technology
Dry gas seals are " dry operating air seal "（Dry Running gas seals）It is to be used for fluting Sealing Technology
A kind of novel shaft end sealing of air seal, belongs to non-contact seals.Dry type gas sealing mechanism be annular seal space and rotary shaft it
Between, a series of well-regulated throttle clearances and expansion cavity are formed by one group of sealing gear piece, by the viscous friction of medium and
The conversion of energy produces throttle effect step by step, so as to realize sealing.For grinding technique field, the feed cavity of equipment and go out
The sealing property of material chamber has considerable influence, especially dry-type pulverizing equipment to the quality of product, and sealing property not only influences product
Performance, can also cause machinery equipment failure.Because dry-type pulverizing machine is by powder conveying to feed cavity, grinding under gas effect
Chamber, discharging chamber etc., such as sealing property of these cavitys not enough, are then likely to result in the seam that powder enters between mechanical rotation portion
Gap, powder appears in the position in gap, it is possible to cause rotary body stuck phenomenon, influences the operation of equipment.In order to international city
Field integrates with, it would be desirable to be designed according to international standard, the gas sealing mechanism of micronizer just becomes necessary.
Utility model content
For above-mentioned technical problem, the purpose of this utility model be to provide a kind of sealing effectiveness preferably, abrasion subtracts significantly
Gas sealing mechanism small, that main frame whole service life can be extended.
The utility model solve the technical scheme that is used of above-mentioned technical problem for：A kind of gas sealing mechanism, including inner chamber
It can be set on the upside of the hollow columnar body on the outside of fixing body, the body and be outward extended with epitaxial lateral overgrowth under supporter, body
Stretching has lower support, and upper supporter and/or lower support can be fixed on body, and the ring of indent is formed between upper and lower supporter
Shape gas held space, the receiving space is connected by the several through holes being opened on body with chamber body.
Preferably, chamber body side wall forms annular groove, the one end open of each through hole is arranged on the receiving
On the bottom wall in space, another end opening of each through hole is arranged on the bottom land of the annular groove.
Preferably, the feed cavity of the lower support and body formation material.
Preferably, the discharging chamber of the upper supporter and body formation material.
Preferably, it is the conical surface that the upper supporter, which is located at discharging chamber side,.
Preferably, the supporting surface of the upper and lower supporter has been respectively formed on annular groove.
Preferably, the inclination angle of bolt can be pushed against by being provided with the downside of the upper supporter and/or lower support.
As can be known from the above technical solutions, the utility model can be passed through gas in receiving space, and gas is after several through holes
Into chamber body, such as chamber body is arranged on fixing body, then the gap row that gas can be between chamber body and fixing body
Go out, powder etc. can be avoided to enter gap, so as to reach sealed effect, it is ensured that equipment operation is unobstructed.
Brief description of the drawings
Fig. 1 is a kind of structural representation of preferred embodiment of the utility model.
Fig. 2 is gas sealing mechanism scheme of installation of the present utility model.
Embodiment
The utility model is discussed in detail with reference to Fig. 1, Fig. 2：
A kind of gas sealing mechanism, including inner chamber can be set in the hollow columnar body 1 in the outside of fixing body 10, and fixing body can be
It is outward extended with the downside of supporter 2, body and stretches out on the upside of the rotary body of Gas grinding machine, such as axle sleeve, axle, the body
There is lower support 3, upper supporter and/or lower support can be fixed on body 12, body such as grinder body etc. is supported up and down
On the one hand the design of body can conveniently install gas sealing mechanism, and the ring-type of indent on the other hand can be formed between upper and lower supporter
Gas held space 4, is conveniently passed through gas, and the receiving space is connected by the several through holes 5 being opened on body with chamber body
It is logical.In implementation process, the gas in receiving space can enter inner chamber in pressure effect from through hole, to reach sealed purpose.
The sealing effectiveness of device of the present utility model preferably, can non-fully be contacted with rotary body, therefore frictional force is smaller, and dismounting it is simple,
Principle is simple, abrasion is greatly reduced, with longer service life.
In implementation process, chamber body side wall forms annular groove 6, and the one end open of each through hole is arranged on described
On the bottom wall of receiving space, another end opening of each through hole is arranged on the bottom land of the annular groove.The design of annular groove, can make to lead to
The gas in hole enters annular groove, it is to avoid the fixing body for being arranged on chamber body blocks through hole, further improves sealing property.
In the utility model, the feed cavity 7 of the lower support and the body formation material, due to lower support with
Gap is there may be between body, by setting sealing ring then to be sealed to the gap between body and lower support,
So as to realize the hermetic seal of feed cavity；The discharging chamber 8 of the upper supporter and body formation material, due to upper supporter and body
Between there may be gap, equally can between body and upper supporter by setting sealing ring to seal the gap, from
And realize the hermetic seal of discharging chamber.
Preferably, it is the conical surface that the upper supporter, which is located at discharging chamber side, to facilitate discharging；The upper and lower supporter
Supporting surface be respectively formed in annular groove 9, annular groove can be set sealing ring, so as to seal between receiving space and body
Gap, prevent gas from leaking；The inclination angle 11 of bolt can be pushed against by being provided with the downside of the upper supporter and/or lower support, be led to
Crossing bolt abutting inclination angle can be firmly mounted to gas sealing mechanism on fixing body.
Gas check of the present utility model is dry gas sealing device, and it designs the content for being related to subjects.Wherein rub
It is dry gas seals design with lubrication, hydrodynamics, thermodynamics, aerodynamics, Engineering Materials, mechanical oscillation, control theory
The need for the core content that is related to.The geometric parameter of dry gas seals（Size and groove profile）And working condition（Seal pressure, rotating speed,
Gas temperature and viscosity）There is material impact to its performance parameter.In general, the limit of mechanical lapping is 300 mesh（50 is micro-
Rice）, and Gas grinding machine is then likely to be breached 1500 mesh（10 microns）Below.When material rotates at a high speed in grinding chamber, material grain
Phase mutual friction between son, particle can be less and less.When centrifugal force is less than the power that center discharging opening air-flow is produced, material will be with
Air-flow takes discharging opening out of.The performance parameter of dry gas seals is related to sealing surface pressure distribution, opening force, leakage rate, rigidity, unlatching
The parameters such as power/leakage rate ratio, rigidity/leakage rate ratio., can be by solving gas lubrication for the analysis of these parameters
Reynolds equations are obtained, and this is the fundamental equation that dry gas seals calculate analysis.According to the difference of problem analysis, it is considered to which gas is slided
Dynamic and end face the surface roughness of advection, Reynolds equations can obtain different embodying form.
Above-mentioned embodiment is only for illustration of the utility model, and is not the relevant skill to limitation of the present utility model
The those of ordinary skill in art field, can be so that various changes can be made in the case where not departing from the utility model spirit and scope
And modification, therefore all equivalent technical schemes should also belong to category of the present utility model.
Claims (7)
1. a kind of gas sealing mechanism, it is characterised in that：The hollow columnar body on the outside of fixing body can be set in including inner chamber, this
It is outward extended with the upside of body on the downside of supporter, body and is outward extended with lower support, upper supporter and/or lower support can be consolidated
It is scheduled on body, the annular gas receiving space of indent is formed between upper and lower supporter, the receiving space is by being opened in body
On several through holes connected with chamber body.
2. gas sealing mechanism according to claim 1, it is characterised in that：Chamber body side wall forms annular groove, each
The one end open of through hole is arranged on the bottom wall of the receiving space, and another end opening of each through hole is arranged on the annular groove
On bottom land.
3. gas sealing mechanism according to claim 1 or claim 2, it is characterised in that：The lower support and the body formation
The feed cavity of material.
4. gas sealing mechanism according to claim 1 or claim 2, it is characterised in that：The upper supporter and the body formation
The discharging chamber of material.
5. gas sealing mechanism according to claim 4, it is characterised in that：It is cone that the upper supporter, which is located at discharging chamber side,
Face.
6. gas sealing mechanism according to claim 1 or claim 2, it is characterised in that：Equal shape on the supporting surface of the upper and lower supporter
Into there is annular groove.
7. gas sealing mechanism according to claim 1 or claim 2, it is characterised in that：On the downside of the upper supporter and/or lower support
The inclination angle of bolt can be pushed against by being provided with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720117465.4U CN206571983U (en) | 2017-02-10 | 2017-02-10 | A kind of gas sealing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720117465.4U CN206571983U (en) | 2017-02-10 | 2017-02-10 | A kind of gas sealing mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206571983U true CN206571983U (en) | 2017-10-20 |
Family
ID=60058773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720117465.4U Active CN206571983U (en) | 2017-02-10 | 2017-02-10 | A kind of gas sealing mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206571983U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112747118A (en) * | 2020-12-30 | 2021-05-04 | 中南大学 | Shaft end sealing device of powder material mixing equipment and mounting method thereof |
-
2017
- 2017-02-10 CN CN201720117465.4U patent/CN206571983U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112747118A (en) * | 2020-12-30 | 2021-05-04 | 中南大学 | Shaft end sealing device of powder material mixing equipment and mounting method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220402 Address after: 511496 No. 1, Chuangyuan Road, Zhongcun street, Panyu District, Guangzhou City, Guangdong Province Patentee after: PUHLER (GUANGDONG) SMART NANO TECHNOLOGY Co.,Ltd. Patentee after: Hunan paile Intelligent Equipment Group Co.,Ltd. Patentee after: Hunan Jinling Machine Tool Technology Group Co.,Ltd. Address before: 510000 self compiled 01 by workshop 1, No. 10, Hanqi Avenue, Dalong street, Panyu District, Guangzhou, Guangdong Province Patentee before: CHNZO (GUANGZHOU) SMART EQUIPMENT CO.,LTD. |