CN109973663A - Elastic gas sealing mechanism - Google Patents
Elastic gas sealing mechanism Download PDFInfo
- Publication number
- CN109973663A CN109973663A CN201910317596.0A CN201910317596A CN109973663A CN 109973663 A CN109973663 A CN 109973663A CN 201910317596 A CN201910317596 A CN 201910317596A CN 109973663 A CN109973663 A CN 109973663A
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- China
- Prior art keywords
- seal
- sealing ring
- sealing mechanism
- mounting base
- gland
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/46—Sealings with packing ring expanded or pressed into place by fluid pressure, e.g. inflatable packings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Architecture (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Sealing Devices (AREA)
Abstract
The invention discloses a kind of elastic gas sealing mechanism, the elasticity gas sealing mechanism includes: gland component, and the gland component is covered for being sealedly attached to equipment end, and the gland component has accommodating cavity towards the side of main shaft；Seal assembly, the seal assembly are embedded in the accommodating cavity for being set in the main shaft, the seal assembly and are formed with air cavity between the gland component；The gland component is equipped with the venthole connecting with external compressed air source unit, and the venthole is connected with the air cavity.The present invention uses pressurized seal structure, so that seal assembly is held tightly main shaft by the effect of air pressure, can effectively prevent leakage of the various bulk material media in mixed process；The elasticity gas sealing mechanism has many advantages, such as that simple structure, long service life, maintenance is convenient, sealing effect is good.
Description
Technical field
The present invention relates to technical field of sealing technology, in particular to a kind of elastic gas sealing mechanism.
Background technique
As mixing apparatus is using increasingly extensive and every profession and trade dielectric property diversification, for sealing structure
It is required that also higher and higher.The mixing of material drives agitating device mainly by main shaft, outside main shaft needs and mixing apparatus
Driving device connection, in order to avoid material is by the leakage of junction between main shaft and mixing apparatus, need main shaft with mix
The equipment end of equipment link position, which covers, adds a sealing device.Traditional sealing device usually by filler (being also packing) or
Mechanical type is constituted, and filler is industrially to be formed using a kind of earliest sealing device by fibrages such as cotton, fiber crops, friction system
Number is small, heating conduction is poor, especially the minimum medium of grain fineness, is more easier to leak, after filler abrasion, when replacement is safeguarded
Inconvenient for operation, service life is short；Mechanical seal relies primarily on the end face of smooth and straight rotating ring and stationary ring, leans on elastic component
So that it is mutually fitted and is performed relative motion with the pressure of sealing medium, maintains one layer of very thin liquid film close to realize between end face
Envelope, although sealing effect is good, installation is complicated, and components are more, and service life is short, have centainly for regularly maintenance
Operation difficulty.
Summary of the invention
The technical problem to be solved by the present invention is in order to overcome in the prior art sealing device components it is more, service life is short
The defects of, a kind of elastic gas sealing mechanism is provided.
The present invention is to solve above-mentioned technical problem by following technical proposals:
A kind of elasticity gas sealing mechanism, it is characterized in that, comprising:
Gland component, the gland component are covered for being sealedly attached to equipment end, and the gland component is towards main shaft
Side has accommodating cavity；
Seal assembly, for the seal assembly for being set in the main shaft, the seal assembly is embedded at the accommodating
It is intracavitary and be formed with air cavity between the gland component；
The gland component is equipped with the venthole connecting with external compressed air source unit, the venthole and the air cavity phase
Connection.
In the present solution, form, seal assembly are mounted in the accommodating cavity of gland component and are accommodating using the above structure
Intracavitary to be formed with air cavity, main shaft passes through seal assembly, applies air pressure, sealing group by the air cavity of external compressed air source unit internally
Part is in close contact under the action of external pressure with main shaft, can effectively prevent various bulk material medium letting out in mixed process
Leakage, the elasticity gas sealing mechanism have many advantages, such as that structure is simple, maintenance is convenient, sealing effect is good.
Preferably, the gland component includes mounting base, gas-tight gland, the mounting base is sealedly attached to the equipment end
It covers, the gas-tight gland includes interconnecting piece and compressed part, and one end of the interconnecting piece is fixedly connected with the compressed part, described
The other end of interconnecting piece and the mounting base are tightly connected, and the interconnecting piece, the compressed part and the mounting base are enclosed jointly
If forming the accommodating cavity, the compressed part is used to the seal assembly being pressed in the mounting base.
In the present solution, form using the above structure, between mounting base and equipment end cap and mounting base and gas-tight gland
Between be tightly connected, gap leakage of the mixed material between mounting base and equipment end cap, Er Qieke can be effectively prevented
The good air cavity of air-tightness can be formed with the accommodating cavity guaranteed between mounting base and gas-tight gland, strengthens sealing effect.
Preferably, the seal assembly includes sealing ring and two seal receptacles, the sealing ring is pressed on described two close
It seals between seat, and there are gap between two seal receptacles, two seal receptacles are set to the compressed part and the mounting base
Between.
In the present solution, form using the above structure, can form an air-tightness between seal assembly and gland component
Good air cavity, the air pressure of external air source device can act on the sealing ring between two seal receptacles, give one court of sealing ring
To the power of major axes orientation, make sealing ring tight abutment on main shaft.
Preferably, the outer peripheral surface of the sealing ring is equipped with the projecting ring section of outwardly convex, the projecting ring section is located at described in two
Between seal receptacle.
In the present solution, form, the projecting ring section of the outer peripheral surface of sealing ring not only can increase and seal using the above structure
Contact surface between seat increases sealing effect, can also separate two seal receptacles, make gas pressure on sealing ring.
Preferably, the seal receptacle is resisted against on the outer peripheral surface of the sealing ring, for preventing the sealing ring opposite
It is rotated in the circumferential in the seal receptacle.
Preferably, the side of the seal receptacle is equipped with the concave station matched with the outer ring of the sealing ring, the concave station is supported
It is against the outer peripheral surface of the sealing ring.
In the present solution, form using the above structure, the outer ring of sealing ring is mounted in concave station, sealing ring can be increased
Contact surface between seal receptacle, not only increases frictional force between the two, prevent sealing ring relative to seal receptacle in the circumferential
Rotation, can also increase air-tightness.
Preferably, the bearing surface of the sealing ring and the concave station is equipped with several convex closures, the seal receptacle be equipped with
The groove of the convex closure cooperation.
In the present solution, form, the mutual cooperation of convex closure and groove can not only prevent sealing ring phase using the above structure
Seal receptacle is rotated in the circumferential, the contact surface of sealing ring and seal receptacle can also be increased, further increases the gas of air cavity
Close property, can achieve better seal effect.
Preferably, one end of the sealing ring is provided with card slot, the other end of the sealing ring is equipped with to be cooperated with the card slot
Fixture block, the fixture block is connected to the card slot, so that the shape of the sealing ring is annular in shape.
In the present solution, form using the above structure, sealing ring using it is preceding be a strip, by sealing ring when use
Fixture block and card slot be clamped, formed cyclic annular.The sealing ring of this spline structure is easily worked, and installation and replacement are convenient.
Preferably, the mounting base, the gas-tight gland, the seal receptacle are split type structure.
In the present solution, form using the above structure, makes mounting base, gas-tight gland, seal receptacle can be other zero in equipment
Part is installed after the assembly is completed, and maintenance disassembly and replacement are convenient.
The positive effect of the present invention is that: elastic gas sealing mechanism of the invention uses pressurized seal structure, passes through
The air cavity that air pressure enters generates pressure, and seal assembly is made to be held tightly main shaft by the effect of air pressure, can effectively prevent various powder
Leakage of the plastochondria medium in mixed process；The elasticity gas sealing mechanism simple, long service life, maintenance side with structure
Just, the advantages that sealing effect is good.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the elastic gas sealing mechanism of present pre-ferred embodiments.
Fig. 2 is the structural schematic diagram of mounting base in the elastic gas sealing mechanism of present pre-ferred embodiments.
Fig. 3 is the structural schematic diagram of mounting base in the elastic gas sealing mechanism of present pre-ferred embodiments.
Fig. 4 is the structural schematic diagram of gas-tight gland in the elastic gas sealing mechanism of present pre-ferred embodiments.
Fig. 5 is the structural schematic diagram of gas-tight gland in the elastic gas sealing mechanism of present pre-ferred embodiments.
Fig. 6 is the structural schematic diagram of sealing ring in the elastic gas sealing mechanism of present pre-ferred embodiments.
Fig. 7 is the structural schematic diagram of seal receptacle in the elastic gas sealing mechanism of present pre-ferred embodiments.
Description of symbols:
Main shaft 100
Equipment end cap 200
Mounting base 1
First annular slot 11
Second annular groove 12
First mounting screw 13
First positioning pin 14
Gas-tight gland 2
Interconnecting piece 21
Compressed part 22
Second mounting screw 23
Second positioning pin 24
Sealing ring 3
Projecting ring section 31
Convex closure 32
Fixture block 33
Seal receptacle 4
Concave station 41
Groove 42
Third mounting screw 43
Air cavity 5
Venthole 6
First sealing ring 7
Second sealing ring 8
Fixing screws 9
Specific embodiment
The embodiment for further illustrating the present invention below by the mode of embodiment, but therefore not limiting the present invention to
Among range.
As shown in Figures 1 to 7, the elastic gas sealing mechanism of the embodiment of the present invention includes gland component and seal assembly, pressure
Cap assemblies have accommodating cavity towards the side of main shaft 100 for being sealedly attached to equipment end cap 200, gland component；Sealing group
Part is embedded in accommodating cavity for being set in main shaft 100, seal assembly and is formed with air cavity 5 between gland component；Gland
Component is equipped with the venthole 6 connecting with external compressed air source unit, and venthole 6 is connected with air cavity 5.
Seal assembly is mounted in the accommodating cavity of gland component and is formed with air cavity 5 in accommodating cavity, and main shaft 100 passes through close
Sealing assembly applies air pressure by the air cavity 5 of external compressed air source unit internally, seal assembly under the influence of air pressure with main shaft
100 are in close contact, and can effectively prevent leakage of the various bulk material media in mixed process, which has knot
The advantages that structure is simple, maintenance is convenient, sealing effect is good.
Gland component includes mounting base 1, gas-tight gland 2, in the upper and lower end faces of mounting base 1 with gas-tight gland 2 and equipment
The contact surface of end cap 200 is provided with first annular slot 11 and the second annular groove 12 around main shaft 100, first annular slot 11 and second
The first sealing ring 7 and the second sealing ring 8 are separately installed in annular groove 12, by the second sealing ring 8 by mounting base 1 and equipment end
Lid 200 is tightly connected, and material is effectively prevent to reveal between mounting base 1 and equipment end cap 200；Gas-tight gland 2 includes interconnecting piece
21 and compressed part 22, one end of interconnecting piece 21 be fixedly connected with compressed part 22, the contact surface of interconnecting piece 21 and mounting base 1 passes through the
One sealing ring 7 is tightly connected, and can be prevented air cavity 5 from occurring pressure leakages when being passed through gas, be influenced the airtight effect of air cavity 5；
Interconnecting piece 21, compressed part 22 and mounting base 1 are enclosed jointly to be set to form accommodating cavity, and compressed part 22 is used to seal assembly being pressed in accommodating
In intracavitary mounting base 1.
Seal assembly includes sealing ring 3 and two seal receptacles 4, and sealing ring 3 is pressed between two seal receptacles 4, and two
There are gap between seal receptacle 4, two seal receptacles 4 are set between compressed part 22 and mounting base 1.In the present embodiment, it seals
The silica gel material that ring 3 selects flexible deformation preferable and wear-resisting, seal receptacle 4 select polytetrafluoroethylene material, during installation, by solid
Determine screw 9 gas-tight gland 2 and mounting base 1 are fixed on equipment end cap 200, two seal receptacles 4 being located in this way in accommodating cavity
Sealing ring 3 is squeezed in the case where external pressure must act on and is combined closely between the compressed part of gas-tight gland 2 22 and mounting base 1,
To form the good air cavity 5 of an air-tightness.
In the present embodiment, seal assembly is one, but in order to reach better seal effect, seal assembly be can choose
Two or more.
The outer peripheral surface of sealing ring 3 is equipped with the projecting ring section 31 of outwardly convex, and projecting ring section 31 is located between two seal receptacles 4.It is convex
Ring portion 31 and two seal receptacles 4, mounting base 1 and gas-tight gland 2 collectively constitute air cavity 5, and the air pressure in air cavity 5 acts predominantly on
On projecting ring section 31, so that sealing ring 3 and main shaft 100 are in close contact, reach more preferable sealing effect.
Seal receptacle 4 is resisted against on the outer peripheral surface of sealing ring 3, with for prevent sealing ring 3 relative to seal receptacle 4 in the circumferential
Rotation.In the present embodiment, the side of two seal receptacles 4 is equipped with the concave station 41 matched with the outer ring of sealing ring 3, and concave station 41 supports
It is against the outer peripheral surface of sealing ring 3.The outer ring of sealing ring 3 is mounted in concave station 41, can be increased between sealing ring 3 and seal receptacle 4
Contact surface, not only increase frictional force between the two, sealing ring 3 prevented to rotate in the circumferential relative to seal receptacle 4, can be with
Increase air-tightness.
The outer peripheral surface that sealing ring 3 is abutted with concave station 41 is equipped with several arc convex closures 32, is equipped on seal receptacle 4 and arc
The arc groove 42 that convex closure 32 cooperates.The setting of convex closure 32 and groove 42 not only can prevent sealing ring 3 from existing relative to seal receptacle 4
It is rotated in circumferential direction, the contact surface of sealing ring 3 Yu seal receptacle 4 can also be increased, further increase the air-tightness of air cavity 5, it can be with
Reach better seal effect.
As shown in fig. 6, one end of sealing ring 3 is provided with card slot (not marking in figure), the other end of sealing ring 3 is equipped with matches with card slot
The fixture block 33 of conjunction, fixture block 33 are connected to card slot, so that the shape of sealing ring 3 is annular in shape.Sealing ring 3 is being a strip before
Fixture block 33 and card slot are clamped when use by shape, are formed cyclic annular.The sealing ring 3 of this spline structure is easily worked, installation and replacement side
Just.
Mounting base 1 is split type structure, is formed for multiple component combinations, as shown in Figures 2 and 3, in the present embodiment, peace
Dress seat 1 is made of two semi-circular components, is respectively provided with the dowel hole of installation positioning two semiorbicular junctions
With for installing fixed mounting screw threaded hole, when installation, two semi-circular components are determined by the first positioning pin 14
Then two semi-circular components are formed a complete mounting base 1 by the first mounting screw 13 by position.In mounting base 1 also
There is fixing screws threaded hole corresponding with 200 upper screwed hole of equipment end cap, is fixed on equipment end cap 200 by fixing screws 9
On.
As shown in Figure 4 and Figure 5, gas-tight gland 2 is also made of two semi-circular components, in the connection of two semi-circular components
The interconnecting piece 21 that place is located at gas-tight gland 2 is equipped with for installing the dowel hole positioned and for installing fixed mounting screw
Threaded hole when installation, is positioned two semi-circular components by the second positioning pin 24, and the second mounting screw 23 is then passed through
Two semi-circular components are formed into a complete gas-tight gland 2.On gas-tight gland 2 there are also with fixing screws in mounting base 1
The corresponding fixing screws threaded hole of threaded hole, is fixed in mounting base 1 by fixing screws 9.
As shown in fig. 7, seal receptacle 4 is also made of two semi-circular components, by third mounting screw 43 by two semi-rings
Shape component forms a complete seal receptacle 4.
Above-mentioned mounting base 1, gas-tight gland 2, seal receptacle 4 are adopted a split structure and are installed, in maintenance when side
Just, easy for removal and installation.
Although specific embodiments of the present invention have been described above, it will be appreciated by those of skill in the art that this is only
For example, protection scope of the present invention is to be defined by the appended claims.Those skilled in the art without departing substantially from
Under the premise of the principle and substance of the present invention, many changes and modifications may be made, but these change and
Modification each falls within protection scope of the present invention.
Claims (9)
1. a kind of elasticity gas sealing mechanism characterized by comprising
Gland component, the gland component are covered for being sealedly attached to equipment end, and the gland component is towards the side of main shaft
With accommodating cavity；
Seal assembly, for being set in the main shaft, the seal assembly is embedded in the accommodating cavity seal assembly
And air cavity is formed between the gland component；
The gland component is equipped with the venthole connecting with external compressed air source unit, and the venthole is connected with the air cavity
It is logical.
2. elasticity gas sealing mechanism as described in claim 1, which is characterized in that the gland component includes mounting base, airtight
Gland, the mounting base are sealedly attached to the equipment end and cover, and the gas-tight gland includes interconnecting piece and compressed part, the company
One end of socket part is fixedly connected with the compressed part, and the other end of the interconnecting piece and the mounting base are tightly connected, the company
Socket part, the compressed part and the mounting base are enclosed jointly to be set to form the accommodating cavity, and the compressed part is used for the sealing
Component is pressed in the mounting base.
3. elasticity gas sealing mechanism as claimed in claim 2, which is characterized in that the seal assembly includes sealing ring and two
Seal receptacle, the sealing ring are pressed between described two seal receptacles, and there are gap between two seal receptacles, two described close
Envelope seat is set between the compressed part and the mounting base.
4. elasticity gas sealing mechanism as claimed in claim 3, which is characterized in that the outer peripheral surface of the sealing ring is equipped with convex
The projecting ring section risen, the projecting ring section are located between two seal receptacles.
5. elasticity gas sealing mechanism as claimed in claim 3, which is characterized in that the seal receptacle is resisted against the sealing ring
On outer peripheral surface, for preventing the sealing ring from rotating in the circumferential relative to the seal receptacle.
6. elasticity gas sealing mechanism as claimed in claim 5, which is characterized in that the side of the seal receptacle be equipped with it is described close
The concave station that the outer ring of seal ring matches, the concave station are resisted against the outer peripheral surface of the sealing ring.
7. elasticity gas sealing mechanism as claimed in claim 6, which is characterized in that the bearing surface of the sealing ring and the concave station
Equipped with several convex closures, the seal receptacle is equipped with the groove cooperated with the convex closure.
8. elasticity gas sealing mechanism as claimed in claim 3, which is characterized in that one end of the sealing ring is provided with card slot, institute
The other end for stating sealing ring is equipped with the fixture block cooperated with the card slot, and the fixture block is connected to the card slot, so that the sealing
The shape of ring is annular in shape.
9. elasticity gas sealing mechanism as claimed in claim 8, which is characterized in that the mounting base, the gas-tight gland, described
Seal receptacle is split type structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910317596.0A CN109973663A (en) | 2019-04-19 | 2019-04-19 | Elastic gas sealing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910317596.0A CN109973663A (en) | 2019-04-19 | 2019-04-19 | Elastic gas sealing mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109973663A true CN109973663A (en) | 2019-07-05 |
Family
ID=67085336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910317596.0A Withdrawn CN109973663A (en) | 2019-04-19 | 2019-04-19 | Elastic gas sealing mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109973663A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111536241A (en) * | 2020-03-24 | 2020-08-14 | 合肥通用机械研究院有限公司 | Semi-open type wear-resistant ring combined sealing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4541638A (en) * | 1983-11-09 | 1985-09-17 | Nipon Pillar Packing Co.. Ltd. | Emergency shaft seal device by deformation of packing ring |
| CN203730772U (en) * | 2014-03-03 | 2014-07-23 | 浙江长城减速机有限公司 | Fluid-pressure rotating shaft packing seal device |
| CN204327988U (en) * | 2014-11-06 | 2015-05-13 | 马钢(集团)控股有限公司 | A kind of seal arrangement for RH refining furnace roof rifle |
| CN106321855A (en) * | 2016-10-19 | 2017-01-11 | 无锡市宏源弹性器材有限公司 | Stern shaft sealing device |
| CN207437774U (en) * | 2017-08-24 | 2018-06-01 | 南京轴承有限公司 | Hydraulic pressure separating bearing seal structure |
| CN207470777U (en) * | 2017-10-18 | 2018-06-08 | 江苏飞跃机泵集团有限公司 | A kind of stuffing seal for being used to seal the strong volatility toxic liquid of deep-etching |
| CN207648137U (en) * | 2017-11-20 | 2018-07-24 | 东方电气集团东方电机有限公司 | Water wheels machine overhauling sealing device |
| CN209909167U (en) * | 2019-04-19 | 2020-01-07 | 双龙集团有限公司 | Elastic air sealing device |
-
2019
- 2019-04-19 CN CN201910317596.0A patent/CN109973663A/en not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4541638A (en) * | 1983-11-09 | 1985-09-17 | Nipon Pillar Packing Co.. Ltd. | Emergency shaft seal device by deformation of packing ring |
| CN203730772U (en) * | 2014-03-03 | 2014-07-23 | 浙江长城减速机有限公司 | Fluid-pressure rotating shaft packing seal device |
| CN204327988U (en) * | 2014-11-06 | 2015-05-13 | 马钢(集团)控股有限公司 | A kind of seal arrangement for RH refining furnace roof rifle |
| CN106321855A (en) * | 2016-10-19 | 2017-01-11 | 无锡市宏源弹性器材有限公司 | Stern shaft sealing device |
| CN207437774U (en) * | 2017-08-24 | 2018-06-01 | 南京轴承有限公司 | Hydraulic pressure separating bearing seal structure |
| CN207470777U (en) * | 2017-10-18 | 2018-06-08 | 江苏飞跃机泵集团有限公司 | A kind of stuffing seal for being used to seal the strong volatility toxic liquid of deep-etching |
| CN207648137U (en) * | 2017-11-20 | 2018-07-24 | 东方电气集团东方电机有限公司 | Water wheels machine overhauling sealing device |
| CN209909167U (en) * | 2019-04-19 | 2020-01-07 | 双龙集团有限公司 | Elastic air sealing device |
Non-Patent Citations (1)
| Title |
|---|
| 翟志鸿;: "一种新型粉体旋转轴密封的结构及应用", 食品工业, no. 05 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111536241A (en) * | 2020-03-24 | 2020-08-14 | 合肥通用机械研究院有限公司 | Semi-open type wear-resistant ring combined sealing device |
| CN111536241B (en) * | 2020-03-24 | 2022-07-19 | 合肥通用机械研究院有限公司 | Semi-open type wear-resisting ring combined sealing device |
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Application publication date: 20190705 |
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