CN218543181U - High-pressure powder combined dynamic sealing structure - Google Patents
High-pressure powder combined dynamic sealing structure Download PDFInfo
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- CN218543181U CN218543181U CN202222927603.9U CN202222927603U CN218543181U CN 218543181 U CN218543181 U CN 218543181U CN 202222927603 U CN202222927603 U CN 202222927603U CN 218543181 U CN218543181 U CN 218543181U
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Abstract
The utility model relates to a pivot sealing member technical field discloses a high pressure powder combination moves seal structure, including seal chamber, pivot and multistage seal assembly, multistage seal assembly comprises multistage movable seal assembly and two sets of quiet seal assembly, the seal chamber rear end is connected with flange, seal chamber installs seal base through flange in the rear end, just pivot and seal base coaxial arrangement, seal base rear end middle part is provided with first group movable seal assembly, first group movable seal assembly rear end is provided with the second and organizes movable seal assembly, be provided with the third between second group movable seal assembly and end cover and organize movable seal assembly. The utility model discloses in, this structure is through adopting multistage seal structure to combined the sealed throttle of slot and decompressed, flexible sealing washer advantage that generates heat fewly, made the sealing member can bear great axial pressure, and can not increase more friction heat, can play better sealed effect.
Description
Technical Field
The utility model relates to a pivot sealing member technical field especially relates to a high pressure powder combination moves seal structure.
Background
The sealing element is widely applied to various parts of various equipment as a common part, and the quality of the sealing element installation directly determines the quality of the sealing performance of the product. With the rapid development of industrial automation and nonstandard automation, the requirement for motor shaft end sealing in some motor transmission fields is higher and higher. At present, the sealing form of common shaft parts is mostly that an annular sealing groove is formed in the cylindrical surface of the shaft part, and then elastic sealing elements such as O-shaped rings are arranged in the sealing groove for sealing.
At present, it is more difficult when carrying out action seal to high-pressure powder axle, because the rotation of pivot, adopt the tight fit to produce great frictional force easily between pivot sealing member and the seal receptacle, lead to the temperature rise, sealing reliability reduces, when adopting the cooperation of pine between pivot sealing member and seal receptacle, the powder that contains high-pressure gas takes place to reveal very easily, lead to environmental pollution, and the sealing member of high-pressure powder axle had not only to bear great axial pressure, play fine sealed effect again, and do not produce great sealing member friction and generate heat, single seal structure hardly satisfies the requirement.
Therefore, the technical personnel in the field provide a dynamic sealing structure of high-pressure powder combination to solve the problems in the background technology.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the shortcoming that exists among the prior art, and the high pressure powder combination that proposes moves seal structure, through adopting multistage seal structure to combined the sealed throttle of slot and decompressed, flexible sealing washer advantage less that generates heat, made the sealing member can bear great axial pressure, played fine sealed effect again, and can not increase more friction heat, can play better sealed effect.
In order to achieve the above purpose, the utility model provides a following technical scheme:
a high-pressure powder combined dynamic sealing structure comprises a sealing cavity, a rotating shaft and a multistage sealing assembly, wherein the multistage sealing assembly consists of a multistage dynamic sealing assembly and two groups of static sealing assemblies, the rear end of the sealing cavity is connected with a connecting flange, the rear end of the sealing cavity is provided with a sealing base through the connecting flange, the rotating shaft and the sealing base are coaxially arranged, the middle part of the rear end of the sealing base is provided with a first group of dynamic sealing assemblies, each first group of dynamic sealing assemblies comprises a first dynamic sealing filler and a first sealing seat, the first dynamic sealing filler is arranged on the first sealing seat, a plurality of second threaded holes are formed in the inner side of the sealing base, and the first sealing seat is fixedly connected with the sealing base through a plurality of second fastening bolts;
the rear end of the first group of dynamic seal assemblies is provided with a second group of dynamic seal assemblies, the second group of dynamic seal assemblies comprise a second dynamic seal filler and a second seal seat, the second dynamic seal filler is arranged at the upper end part of the second seal seat, and the second seal seat is in threaded connection with the outer circle of the rotating shaft;
a sealing end cover is arranged at the rear end of the second group of dynamic sealing components, the sealing end cover is fixedly connected with the sealing base through a plurality of third fastening bolts, and a dynamic sealing ring is arranged between the second sealing seat and the sealing end cover;
a sealing structure similar to a groove is formed between the first group of dynamic sealing components and the second group of dynamic sealing components, the outer ring of the rotating shaft and the inner ring of the sealing base are respectively sealed, and the sealing structure can be continuously expanded into a multi-stage sealing structure according to the dynamic sealing form;
according to the technical scheme, the first-stage dynamic seal of the structure adopts shaft inner ring seal, the first dynamic seal packing adopts wide and large flexible sealing rings, the first dynamic seal packing can bear certain powder pressure, can generate large deformation when powder is extruded, and can absorb part of extruded powder to reduce friction of a rotating shaft, the second-stage dynamic seal of the structure adopts an outer ring sealing structure between the rotating shaft and a sealing base, high-pressure powder is decompressed through the first-stage dynamic seal, leaked powder is impacted on a second-stage sealing wall and then is scattered and filled in a clearance groove between the first-stage seal and the second-stage seal, so that the axial pressure borne by a sealing part of the second-stage seal is very small, and the flexible sealing rings in the second-stage seal can further enable the powder entering the groove to gradually form flexible end face seal with the end face of the first-stage seal base, and the sealing effect is further improved.
Further, a first static sealing ring is arranged between the sealing base and a connecting flange at the rear end of the sealing cavity;
through above-mentioned technical scheme, the setting of first static sealing washer can be sealed between seal chamber and the seal base.
Furthermore, a plurality of first threaded holes are formed in the connecting flange, and the sealing base is fixedly connected with the connecting flange through a plurality of first fastening bolts;
through above-mentioned technical scheme, fix through first fastening bolt between sealing base and the flange, make assembly strength higher.
Furthermore, a sealing groove is formed in the outer side of the front end of the sealing base, and the first static sealing ring is arranged in the sealing groove;
through the technical scheme, the external sealing structure formed by the sealing groove and the first static sealing ring can effectively seal the rear end of the sealing cavity and the sealing base, and high-pressure powder is prevented from flying out of the sealing cavity.
Further, a second static sealing ring is arranged between the sealing end cover and the sealing base;
through above-mentioned technical scheme, the setting of second static sealing washer can be sealed between seal base and the end cover.
Furthermore, a clearance groove is formed between the end face of the second dynamic sealing packing and the first sealing seat;
through the technical scheme, the arrangement of the clearance groove can ensure that the high-pressure powder is decompressed through the first-stage dynamic seal, the leaked powder is stamped on the second-stage sealing wall and then is scattered and filled in the clearance groove between the first-stage sealing and the second-stage sealing, so that the axial pressure borne by the sealing part of the second-stage sealing becomes very small.
Furthermore, a front end of the sealing base is provided with a front end, and the sealing base is arranged on the sealing cavity in a centering manner through the front end;
through above-mentioned technical scheme, through the centering of seal receptacle front end tang to be connected, can play limiting displacement, make the assembly between seal receptacle and the seal receptacle more accurate.
Further, the first dynamic sealing packing and the second dynamic sealing packing are made of flexible felt rings;
through the technical scheme, the flexible felt ring has the characteristics of stable structural performance and difficulty in loosening, can play the roles of sealing, oil absorption, oil protection, heat insulation, sound insulation and the like, and can ensure that the sealing effect is better.
The utility model discloses following beneficial effect has:
1. the utility model provides a pair of high pressure powder combination moves seal structure, this structure is through adopting multistage combination seal structure, it comprises multistage movive seal and two sets of static seal, the sealing washer adopts 4 &10combination seal structure to combined groove seal throttle decompression, flexible sealing washer generate heat few advantage, make the sealing member can bear great axial pressure, play fine sealed effect again, and can not increase more friction heat, can play better sealed effect.
2. The utility model provides a high pressure powder combination moves seal structure, its multistage combination moves seal assembly's pivot and first order dynamic seal filler inner circle sealed, first order dynamic seal filler is fixed on sealing base rather than first seal receptacle, and be quiescent, sealing base's cavity is sealed with the outer lane of second seal filler, second seal filler is rather than second seal receptacle fixed mounting in pivot 2, rotate together with the pivot, O type dynamic seal circle outer lane is sealed with end cover inner circle, first order dynamic seal assembly fixes on seal receptacle, second level dynamic seal assembly and pivot fixed connection, rotate together with the pivot, the two-stage seal constitutes a set of interior outer lane dynamic seal form, and can increase multiunit seal structure according to this mode, it is more nimble to use.
3. The utility model provides a pair of high pressure powder combination moves seal structure, the second level dynamic seal of this structure adopts the outer lane seal structure between pivot and sealing base, high-pressure powder is through first level dynamic seal decompression, the powder punching press of revealing is on the second level seal wall, scatter again and fill in the clearance groove of first level and second level seal, the axial pressure that makes the sealed position of second level bear becomes very little, and the sealed inside flexible sealing washer of second level can also make to get into progressively form flexible end face seal between powder and the first level seal receptacle terminal surface of slot, because be flexible seal, the frictional force that the contact brought is very little, can not cause big friction to generate heat, slot form has played fine throttle decompression effect again simultaneously, prevent that the powder from revealing, further improve sealed effect.
4. The utility model provides a pair of high pressure powder combination moves seal structure carries out static seal through using the end cover to and use the movable seal circle to seal up with the second seal receptacle, can seal the dust of revealing in whole cavity, realize totally enclosed's effect.
Drawings
Fig. 1 is an axonometric view of a high-pressure powder combined dynamic sealing structure provided by the utility model;
fig. 2 is a front view of a high-pressure powder combined dynamic seal structure provided by the present invention;
fig. 3 is a cross-sectional view of a high-pressure powder combined dynamic sealing structure provided by the utility model;
fig. 4 is the utility model provides a high pressure powder combination moves seal structure's sealed base axonometric drawing.
Illustration of the drawings:
1. sealing the cavity; 2. a rotating shaft; 3. a sealing base; 4. a first static seal ring; 5. a first dynamic seal packing; 6. a first seal seat; 7. a second dynamic seal packing; 8. a second seal seat; 9. sealing the end cover; 10. a second static seal ring; 11. a movable sealing ring; 12. a first fastening bolt; 13. a second fastening bolt; 14. a third fastening bolt; 15. a first threaded hole; 16. a second threaded hole; 17. a sealing groove; 18. and connecting the flanges.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides an embodiment:
a high-pressure powder combined dynamic sealing structure comprises a sealing cavity 1, a rotating shaft 2 and a multi-stage sealing assembly, wherein the multi-stage sealing assembly comprises a multi-stage dynamic sealing assembly and two groups of static sealing assemblies, the rear end of the sealing cavity 1 is connected with a connecting flange 18, the rear end of the sealing cavity 1 is provided with a sealing base 3 through the connecting flange 18, the rotating shaft 2 and the sealing base 3 are coaxially installed, the middle part of the rear end of the sealing base 3 is provided with a first group of dynamic sealing assembly, the first group of dynamic sealing assembly comprises a first dynamic sealing filler 5 and a first sealing seat 6, the first dynamic sealing filler 5 is installed on the first sealing seat 6, the sealing base 3 is provided with a plurality of second threaded holes 16 close to the inner side, and the first sealing seat 6 is fixedly connected with the sealing base 3 through a plurality of second fastening bolts 13;
the rear end of the first group of dynamic seal assemblies is provided with a second group of dynamic seal assemblies, the second group of dynamic seal assemblies comprise a second dynamic seal packing 7 and a second seal seat 8, the second dynamic seal packing 7 is arranged at the upper end part of the second seal seat 8, and the second seal seat 8 is in threaded connection with the excircle of the rotating shaft 2;
a sealing end cover 9 is arranged at the rear end of the second group of dynamic sealing components, the sealing end cover 9 is fixedly connected with the sealing base 3 through a plurality of third fastening bolts 14, and a dynamic sealing ring 11 is arranged between the second sealing seat 8 and the sealing end cover 9;
a sealing structure similar to a groove is formed between the first group of dynamic sealing components and the second group of dynamic sealing components, the outer ring of the rotating shaft 2 and the inner ring of the sealing base 3 are respectively sealed, and the sealing structure can be continuously expanded into a multi-stage sealing structure according to the dynamic sealing form;
the first-stage dynamic seal of the structure adopts shaft inner ring seal, the first dynamic seal packing 5 is wide and large, the flexible seal ring can bear certain powder pressure, can generate large deformation when the powder is extruded, and can absorb part of the extruded powder to reduce the friction of the rotating shaft 2, the second-stage dynamic seal of the structure adopts an outer ring seal structure between the rotating shaft 2 and the seal base 3, high-pressure powder is decompressed through the first-stage dynamic seal, the leaked powder is impacted on the second-stage seal wall and then scattered and filled in a clearance groove between the first-stage seal and the second-stage seal, so that the axial pressure borne by the seal part of the second-stage seal becomes very small, and the flexible seal ring inside the second-stage seal can also enable the powder entering the groove to gradually form flexible end face seal with the end face of the first-stage seal base, and further improves the sealing effect.
A first static sealing ring 4 is arranged between the sealing base 3 and a connecting flange 18 at the rear end of the sealing cavity 1, the first static sealing ring 4 is arranged to seal between the sealing cavity 1 and the sealing base 3, a plurality of first threaded holes 15 are arranged on the connecting flange 18, the sealing base 3 is fixedly connected with the connecting flange 18 through a plurality of first fastening bolts 12, the sealing base 3 is fixed with the connecting flange 18 through the first fastening bolts 12, so that the assembly strength is higher, a sealing groove 17 is arranged on the outer side of the front end of the sealing base 3, the first static sealing ring 4 is arranged in the sealing groove 17, an external sealing structure is formed by the sealing groove 17 and the first static sealing ring 4, the effective sealing between the rear end of the sealing cavity 1 and the sealing base 3 can be realized, the high-pressure powder is prevented from flying out from the inside of the sealing cavity 1, a second static sealing ring 10 is arranged between the sealing end cover 9 and the sealing base 3, the second static sealing ring 10 can seal between the sealing base 3 and the sealing end cover 9, a clearance groove is formed between the end face of the second dynamic sealing packing 7 and the first sealing seat 6, high-pressure powder can be decompressed through the first-stage dynamic sealing by the clearance groove, the leaked powder is punched on the second-stage sealing wall and then is scattered and filled in the clearance groove between the first-stage sealing and the second-stage sealing, so that the axial pressure borne by the sealing part of the second-stage sealing is very small, a spigot is arranged in the middle of the front end of the sealing base 3, the sealing base 3 is centrally arranged on the sealing cavity 1 through the spigot at the front end, a limiting effect can be achieved by the centering connection of the spigot at the front end of the sealing base 3, the assembly between the sealing cavity 1 and the sealing base 3 is more accurate, and the first dynamic sealing packing 5 and the second dynamic sealing packing 7 are made of flexible felt rings, the flexible felt ring has the characteristics of stable structural performance and difficulty in loosening, can play roles in sealing, oil absorption, oil protection, heat insulation, sound insulation and the like, and can ensure a better sealing effect.
The working principle is as follows: when the high-pressure powder combined dynamic sealing structure is used, the first-stage dynamic sealing of the structure adopts shaft inner ring sealing, the first dynamic sealing packing 5 adopts a wide and large flexible sealing ring and can bear certain powder pressure, and can also generate larger deformation when the powder is squeezed in, and absorb part of squeezed powder to reduce friction of the rotating shaft 2, the second-stage dynamic sealing of the structure adopts an outer ring sealing structure between the rotating shaft 2 and the sealing base 3, the high-pressure powder is decompressed through the first-stage dynamic sealing, the leaked powder is stamped on the second-stage sealing wall and then scattered and filled in a clearance groove between the first-stage sealing and the second-stage sealing, so that the axial pressure borne by the sealing part of the second-stage sealing becomes very small, the flexible sealing ring in the second-stage sealing can further enable the powder entering the groove to gradually form flexible end face sealing with the end face of the first-stage sealing seat, the sealing effect is further improved, finally, the sealing is carried out by using the sealing end cover 9 for static sealing, the dynamic sealing ring 11 and the second-stage sealing seat 8 are used for sealing, dust leaked in the whole chamber can be sealed, the effect can be realized, the multi-stage sealing structure is combined with the throttling, the sealing ring can play a better throttling effect, and can not only play a better sealing effect, and can better sealing effect, and the advantage of the axial sealing effect can be better, and the sealing element can be better.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (8)
1. The utility model provides a high pressure powder combination moves seal structure, includes seal chamber (1), pivot (2) and multistage seal assembly, multistage seal assembly comprises multistage movable seal assembly and two sets of quiet seal assembly, its characterized in that: the rear end of the seal cavity (1) is connected with a connecting flange (18), the seal base (3) is installed at the rear end of the seal cavity (1) through the connecting flange (18), the rotating shaft (2) and the seal base (3) are coaxially installed, a first set of dynamic seal assembly is arranged in the middle of the rear end of the seal base (3), the first set of dynamic seal assembly comprises a first dynamic seal filler (5) and a first seal seat (6), the first dynamic seal filler (5) is installed on the first seal seat (6), a plurality of second threaded holes (16) are formed in the seal base (3) close to the inner side, and the first seal seat (6) is fixedly connected with the seal base (3) through a plurality of second fastening bolts (13);
a second group of dynamic seal assemblies are mounted at the rear ends of the first group of dynamic seal assemblies and comprise second dynamic seal packing (7) and a second seal seat (8), the second dynamic seal packing (7) is mounted at the upper end part of the second seal seat (8), and the second seal seat (8) is in threaded connection with the excircle of the rotating shaft (2);
a sealing end cover (9) is arranged at the rear end of the second group of dynamic sealing components, the sealing end cover (9) is fixedly connected with the sealing base (3) through a plurality of third fastening bolts (14), and a dynamic sealing ring (11) is arranged between the second sealing base (8) and the sealing end cover (9);
and a sealing structure similar to a groove is formed between the first group of dynamic sealing components and the second group of dynamic sealing components, the outer ring of the rotating shaft (2) and the inner ring of the sealing base (3) are respectively sealed, and the sealing structure can be continuously expanded into a multi-stage sealing structure according to the dynamic sealing form.
2. The high-pressure powder combined dynamic seal structure of claim 1, which is characterized in that: a first static sealing ring (4) is arranged between the sealing base (3) and a connecting flange (18) at the rear end of the sealing cavity (1).
3. The high-pressure powder combined dynamic seal structure of claim 1, characterized in that: a plurality of first threaded holes (15) are formed in the connecting flange (18), and the sealing base (3) is fixedly connected with the connecting flange (18) through a plurality of first fastening bolts (12).
4. The high-pressure powder combined dynamic seal structure of claim 2, characterized in that: seal groove (17) have been seted up in seal base (3) front end outside, first static seal circle (4) set up inside seal groove (17).
5. The high-pressure powder combined dynamic seal structure of claim 1, which is characterized in that: and a second static sealing ring (10) is arranged between the sealing end cover (9) and the sealing base (3).
6. The high-pressure powder combined dynamic seal structure of claim 1, characterized in that: and a clearance groove is formed between the end surface of the second dynamic sealing packing (7) and the first sealing seat (6).
7. The high-pressure powder combined dynamic seal structure of claim 1, characterized in that: the middle part of the front end of the sealing base (3) is provided with a spigot, and the sealing base (3) is arranged on the sealing cavity (1) through the front end spigot in a centering manner.
8. The high-pressure powder combined dynamic seal structure of claim 1, which is characterized in that: the first dynamic sealing packing (5) and the second dynamic sealing packing (7) are made of flexible felt rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222927603.9U CN218543181U (en) | 2022-11-02 | 2022-11-02 | High-pressure powder combined dynamic sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222927603.9U CN218543181U (en) | 2022-11-02 | 2022-11-02 | High-pressure powder combined dynamic sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218543181U true CN218543181U (en) | 2023-02-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222927603.9U Active CN218543181U (en) | 2022-11-02 | 2022-11-02 | High-pressure powder combined dynamic sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218543181U (en) |
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2022
- 2022-11-02 CN CN202222927603.9U patent/CN218543181U/en active Active
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