CN218542704U - Sealing and lubricating structure for blade disc bushing of moving blade of moving axial flow fan - Google Patents
Sealing and lubricating structure for blade disc bushing of moving blade of moving axial flow fan Download PDFInfo
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- CN218542704U CN218542704U CN202220682198.6U CN202220682198U CN218542704U CN 218542704 U CN218542704 U CN 218542704U CN 202220682198 U CN202220682198 U CN 202220682198U CN 218542704 U CN218542704 U CN 218542704U
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Abstract
The utility model discloses a move accent axial fan moving blade bladed disk bush sealing lubrication structure, including blade, wheel hub, petiole dish, first seal assembly, second seal assembly and pressure assembly, wherein: the hub is of a barrel-shaped structure; the blade is arranged on one side of the inner opening end of the hub, the blade handle disc is arranged below the blade, and the blade handle disc are in threaded connection through bolts penetrating through the blade countersunk head threaded holes and the blade handle disc threaded through holes; the first sealing assembly is arranged on the blade and matched with the blade; the second sealing component is arranged on a horizontal table-board of the L-shaped structure at the closed end of the bottom of the hub; the pressure assembly is arranged between the second assembly and the horizontal table top of the L-shaped structure. Through the utility model discloses a sealed and lubricating structure has solved petiole dish surface and has corroded, and corrode the cinder inflation that produces, causes petiole dish and the outside subassembly card of mutually supporting to die to and the blade angle takes place the skew and leads to the problem that the fan can not normal operating.
Description
Technical Field
The utility model belongs to the technical field of impeller machinery, concretely relates to move accent axial fan moving blade bladed disk bush sealing lubrication structure.
Background
Move and transfer axial draught fan among thermal power factory, because the operating condition is abominable, easily receive the flue gas corrosion, lead to petiole dish surface to be corroded, the cinder inflation that the corruption produced causes petiole dish and copper bush card to die, and then lead to the blade to adjust the inefficacy or lead to adjusting pole and petiole to press from both sides tight department and skid even petiole fracture, blade angular deflection makes the fan can not normal operating. Therefore, the sealing structure and the lubricating performance of the movable blade disc bushing of the dynamic adjusting axial flow fan are improved, and the sealing structure and the lubricating performance are very important for safe, stable, economical and efficient operation of the fan.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a device for solving the problems in the prior art;
in order to realize the technical scheme, the utility model provides a following technical scheme:
the utility model provides a move accent axial fan moving blade bladed disk bush sealed lubrication structure, includes blade, wheel hub, petiole dish, first seal assembly, second seal assembly and pressure components, wherein:
the hub is of a barrel-shaped structure and comprises a top opening end and a bottom closed end, and a through hole is formed in the end face of the closed end in a penetrating mode, so that the half-section cross section of the hub is of an L-shaped structure;
the blade is arranged on one side of the inner opening end of the hub, a plurality of countersunk threaded holes are formed in the top of the blade, the side wall of the blade is matched with the inner wall of the hub, and the top of the blade is flush with the end face of the opening in the top of the hub;
the blade handle disc is arranged below the blade, the top end face of the blade handle disc penetrates through a through hole at the bottom of the hub barrel-shaped structure to be contacted with the bottom of the blade, the side wall of the blade is contacted with the side wall of the through hole, a plurality of threaded through holes corresponding to the top of the blade are arranged on the top end face of the blade handle disc, and the blade handle disc are in threaded connection through bolts penetrating through the blade countersunk head threaded holes and the blade handle disc threaded through holes;
the first sealing assembly is arranged on the blade and matched with the blade;
the second sealing assembly is arranged on a horizontal table-board of the L-shaped structure at the closed end of the bottom of the hub;
the pressure assembly is disposed between the second assembly and the horizontal deck of the L-shaped structure.
Further, be provided with first rectangle annular and second rectangle annular on the radial periphery of blade, wherein:
the first rectangular ring groove is arranged at the upper part of the radial circumferential surface of the blade;
the second rectangular ring groove is arranged at the lower part of the radial circumferential surface of the blade.
Further, the first seal assembly includes a first seal ring and a third seal ring, wherein:
the first sealing ring is matched in the first rectangular ring groove;
the third sealing ring is matched in the second rectangular ring groove.
Further, the second seal assembly includes a shank disk liner and a second seal ring, wherein:
the petiole disc bushing is of an annular structure, integrally-formed bulges are respectively arranged at the top and the middle position of the outer annular surface of the annular structure, the annular surface of the inner ring of the petiole disc bushing is matched on the circumferential surface of the top of the petiole disc, the top bulges are contacted with the bottoms of the blades, and the annular surface of the bottom is contacted with the horizontal table surface of the L-shaped structure at the bottom of the hub;
the second sealing ring is matched in the two bulges on the outer ring surface of the petiole disc lining.
Further, the pressure component is a spring, the spring is arranged between a second bulge on the outer ring surface of the petiole disc bushing and the horizontal table surface of the L-shaped structure, one end of the spring is in contact with the bottom surface of the second bulge, and the other end of the spring is in contact with the upper surface of the horizontal table surface of the L-shaped structure.
Furthermore, a plurality of through holes are formed in the ring surface of the inner ring of the petiole disc bushing, and a plurality of graphite particles are correspondingly arranged on the through holes.
Furthermore, the through holes are formed in the middle of the inner annular surface of the petiole disc bushing and distributed along the inner annular surface of the petiole disc bushing at certain intervals in an array mode.
Further, the contact surface of the petiole disc bushing and the blade is a rough plane.
Further, the first sealing ring and the third sealing ring are O-shaped rings.
Further, the second seal ring is a laminated seal ring.
Compared with the prior art, the utility model has the advantages of:
1. the movable blade disc bushing sealing and lubricating structure of the movable axial flow fan, which consists of the first sealing assembly, the second sealing assembly, the pressure assembly, the blades, the hub and the blade handle disc, solves the problems that the surface of the blade handle disc is corroded, oxide skin generated by corrosion expands, the blade handle disc and an external assembly matched with the blade handle disc are clamped, and the fan cannot normally run due to the deviation of the blade angle;
2. through the mode that the first sealing ring and the third sealing ring in the first sealing structure are matched with the first rectangular ring groove and the second rectangular ring groove on the circumferential surface of the radial excircle of the blade, particles such as dust and the like in a blade disc lining of a moving blade of the stop and regulation axial flow fan and oxide skin and the like can be effectively prevented from falling into the root part of the blade;
3. through the structure of the petiole disc bushing and the second sealing ring in the second sealing structure, the situation that dust and other particles and oxide skin and the like in the moving blade disc bushing of the movable axial flow fan fall into the root of the blade is further avoided;
4. the pressure assembly is arranged to be of a spring structure, so that the blades and the petiole disc in the sealing structure are connected more tightly, and the overall sealing effect is better;
5. the inner ring surface of the petiole disc bushing is uniformly provided with the plurality of graphite particles, so that the softening effect between the petiole disc bushing and the petiole disc is enhanced, and the abrasion between the petiole disc bushing and the petiole disc is reduced;
6. the plane that contacts through with petiole dish bush and blade sets up to the roughness plane, has avoided taking place sliding friction between petiole dish and the blade, has further ensured sealed effect.
Drawings
The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
fig. 1 is a schematic view of the overall structure of a sealing and lubricating structure for a moving blade disc bushing of a dynamic axial flow fan according to the present invention;
FIG. 2 is a schematic structural view of a blade of a dynamic axial flow fan according to the present invention;
fig. 3 is a schematic structural view of a blade handle disk bushing of a sealing and lubricating structure of a moving blade disk bushing of a dynamic axial flow fan according to the present invention;
wherein: 1. the novel fan blade comprises a blade, 2 parts of a first sealing ring, 3 parts of a third sealing ring, 4 parts of a first rectangular ring groove, 5 parts of a second rectangular ring groove, 6 parts of a petiole disc lining, 7 parts of a hub, 8 parts of a petiole disc, 9 parts of a blade screw, 10 parts of a second sealing ring, 11 parts of a spring, 61 parts of graphite and 62 parts of a bulge.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
The following detailed description is exemplary in nature and is intended to provide further explanation of the invention as claimed. Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention.
The utility model discloses a move and transfer axial fan moving blade bladed disk bush sealing lubrication structure, as shown in FIG. 1, including blade 1, wheel hub 7, first seal assembly, second seal assembly, pressure components and petiole dish 8, through first seal assembly, second seal assembly and pressure components and blade 1, wheel hub 7 and petiole dish 8 matched with structure, solved petiole dish 8 surface and corroded, and corrode the scale inflation that produces, cause petiole dish 8 and the outside subassembly card of mutually supporting to die, and the skew takes place for 1 angle of blade to lead to the problem that the fan can not normal operating.
Specifically, the hub 7 is a barrel-shaped structure and comprises an opening end of a barrel opening and a closed end of a barrel bottom, wherein a circular through hole penetrating through the barrel bottom is formed in the closed end of the barrel bottom; specifically, the diameter of the circular through hole is the maximum size of the petiole disk 8 in the radial direction, so that the circular through hole in the barrel bottom of the barrel-shaped structure of the hub 7 can be matched with the outer circular surface corresponding to the maximum size of the petiole disk 8 in the radial direction.
More specifically, the end surface of the opening end of the barrel opening of the hub 7 in the barrel-shaped structure is flush with the upper surface of the blade 1, that is, the top of the fan blade of the blade 1 is flush with the end surface of the opening at the top of the hub 7; so set up for the surface of blade 1 can form a smooth inclined plane with wheel hub 7, has guaranteed the leakproofness of dynamic adjustment axial fan moving blade 1 with wheel hub 7, has avoided having the clearance between blade 1 and the wheel hub 7, makes the problem of overall structure's sealing performance harmlessness take place.
More specifically, as shown in fig. 2, a plurality of counter bores penetrating through the blade 1 are provided on the arc-shaped surface of the arc-shaped structure of the blade 1, and preferably, the plurality of counter bores are uniformly distributed on the arc-shaped surface of the arc-shaped structure of the blade 1. The holes on the arc-shaped surface of the blade 1 include but are not limited to countersunk holes, and the countersunk holes include but are not limited to uniformly distributed on the arc-shaped surface.
More specifically, the petiole disc 8 is arranged below the blade 1 and positioned in the hub 7, and the disc surface with the largest radial size of the petiole disc 8 penetrates through a circular through hole at the bottom of the barrel-shaped structure at the bottom of the hub 7; the bottom terminal surface of petiole dish 8 contacts with the bottom of blade 1, be provided with on the bottom terminal surface of petiole dish 8 with the corresponding screw hole in counter sink quantity and position on the arcwall face of blade 1 bottom, the screw hole runs through the bottom of petiole dish 8, blade 1 is connected through a plurality of screws with petiole dish 8, a plurality of screws pass counter sink on the blade 1 and the screw hole on the petiole dish 8, with blade 1 and 8 threaded connection of petiole dish, also through a plurality of blade screws 9 fixed connection of petiole dish 8 and blade 1.
Furthermore, a first annular groove with a rectangular cross section is further formed in the position, close to the top of the blade 1, on the outer circumference of the blade 1, and a second annular groove with a rectangular structure is further formed in the middle of the outer circumference of the blade 1. Preferably, the first sliding groove is square in cross section; the cross section of the second annular groove is of a rectangular structure.
More specifically, as shown in fig. 3, the blisk bush 6 is disposed on a step surface of a boss at the bottom of the blade 1 and a boss formed by a through hole at the bottom of the barrel structure of the hub 7 and a barrel wall of the barrel structure, wherein the blisk bush 6 is an annular structure, a protrusion 62 integrally formed with the body of the blisk bush 6 is respectively disposed at the top and the middle of an outer annular surface of the annular structure, the top of the blisk bush 6 contacts the boss at the bottom of the blade 1, an inner annular surface of the blisk bush 6 matches with an outer annular surface at the top of the blisk 8, and the bottom of the blisk bush 6 contacts with an L-shaped mesa of the barrel structure of the hub 7. Further, if the petiole disc bushing 6 is vertically cut along the radial direction, the cross section of the petiole disc 8 bushing is in an F-shaped structure, the topmost end of the F-shaped structure is in contact with a boss face at the bottom of the blade 1, the bottom of the vertical end of the F-shaped structure is in contact with a boss face at the barrel-shaped bottom, two horizontal paintings of the F-shaped structure and the inner side wall of the hub 7 form a first closed area, and the vertical ends of the F-shaped structure, a second horizontal paintings and the inner wall of the hub 7 form a second closed area; preferably, the two horizontal paintings of the F-shaped structure have the same length, and the width of the F-shaped vertical structure is larger than the two horizontal paintings of the F-shaped structure.
Further specifically, a circle of through holes are distributed in the middle of the inner annular surface of the petiole disc bushing 6 at intervals in an array mode and used for fixedly arranging the graphite blocks 61 in the circular through holes of the petiole disc bushing 6, and due to the fact that the graphite blocks 61 are evenly arranged on the inner annular surface of the petiole disc bushing 6, the softening effect between the petiole disc bushing 6 and the petiole disc 8 is enhanced, and abrasion between the petiole disc bushing 6 and the petiole disc 8 is reduced. Wherein, the through-hole on the inner ring face of petiole dish bush 6 includes but not limited to the round, and the distribution mode includes but not limited to evenly distributed's such as array, and the through-hole of fixed graphite butyl 61 is also not limited to the through-hole for alleviate the frictional force between petiole dish bush 6 and the petiole dish 8, increase lubricated structure also including but not limited to graphite butyl 61, all belong to with the structure that graphite butyl 61 function and nature are the same the utility model discloses a protection scope.
Further, the first sealing assembly comprises a first sealing ring 2 and a third sealing ring 3, and the first sealing assembly is arranged on the blade 1 and matched with the blade 1; the second sealing component is arranged on a horizontal table-board of the L-shaped structure at the closed end of the bottom of the hub 7; a first rectangular ring groove 4 and a second rectangular ring groove 5 are arranged on the radial circumference of the blade 1, specifically, the first rectangular ring groove is arranged on the upper part of the circumference of the blade 1, and the second rectangular ring groove 5 is arranged on the middle lower part of the circumference of the blade 1; the first sealing ring 2 is arranged in the third rectangular ring groove, and the second sealing ring 10 is arranged in the second rectangular ring groove.
Further specifically, the first sealing ring 2 is arranged in the first rectangular annular groove 4, so that the first sealing ring 2 and the first rectangular annular groove 4 are matched with each other, and a better sealing effect is achieved; the second sealing ring 10 is arranged in a second closed area formed by the number vertical end of the F-shaped structure, the second horizontal drawing and the inner wall of the hub 7, so that the second sealing ring 10 is matched with the second closed area formed by the number vertical end of the F-shaped structure, the second horizontal drawing and the inner wall of the hub 7, and a sealing effect is further achieved.
Preferably, the first and third sealing rings 3 are O-rings.
Preferably, the first rectangular ring groove 4 is of a square-shaped structure.
Preferably, the second rectangular ring groove has a rectangular structure.
Further, the third sealing ring 3 is disposed in the second rectangular ring groove 5 of the blade 1, so that the third sealing ring 3 and the second rectangular ring groove 5 of the blade 1 cooperate with each other to further achieve a sealing effect.
Preferably, the second seal ring 10 is a laminated seal ring made of teflon.
Preferably, the O-ring has a circular cross-section.
The O-shaped ring is preferably of a corrosion-resistant structure, and the structure is inflated inside, so that the sealing effect is better.
Preferably, the first sealing ring 2 is made of fluoroelastomer.
Preferably, the spring 11 of the pressure assembly is made of phosphor bronze, and the blade handle disk bushing 6 is attached to the root of the blade 1 through the elasticity of the spring 11, so that the sealing effect is further guaranteed.
Further, spring 11 sets up in the closed region of number vertical end of F shape structure and second horizontal drawing and wheel hub 7's inner wall formation second, so sets up, makes the utility model discloses a sealed and lubricated structure is compacter.
Further, the contact surface of the petiole disc bushing 6 and the blade 1 is a rough plane, and the roughness of the contact surface is not higher than Ra12.5, namely the surface roughness is Ra12.5 at most, namely the surface smoothness of the contact surface is Ra12.5 at most; the roughness of the contact surface can be set to be a rougher plane, so that sliding friction between the petiole disc and the blade is better avoided, and the sealing effect is further guaranteed. The roughness of the contact surface includes but is not limited to rough surfaces such as Ra25, ra50, ra100 and Ra200, or a value or a range between the above roughness is within the protection scope of the present invention.
The utility model discloses a move and transfer axial fan moving blade bladed disk bush sealing lubrication structure, through the sealed and lubricating structure of moving and transfer axial fan moving blade bladed disk bush that first seal assembly, second seal assembly and pressure components and blade, wheel hub and petiole dish are constituteed, solved petiole dish surface and corroded, and the cinder inflation that corrodes the production, cause petiole dish and the external component card of mutually supporting to die to and the blade angle takes place the skew and leads to the problem that the fan can not normal operating.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of the invention or which are equivalent to the scope of the invention are embraced by the invention.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents of the embodiments of the invention may be made without departing from the spirit and scope of the invention, which should be construed as falling within the scope of the claims of the invention.
Claims (10)
1. The utility model provides a move accent axial fan moving blade bladed disk bush seal lubrication structure which characterized in that, includes blade (1), wheel hub (7), petiole dish (8), first seal assembly, second seal assembly and pressure components, wherein:
the hub (7) is of a barrel-shaped structure and comprises a top opening end and a bottom closed end, and a through hole is formed in the end face of the closed end in a penetrating mode, so that the half-section cross section of the hub (7) is of an L-shaped structure;
the blade (1) is arranged on one side of an inner opening end of the hub (7), a plurality of countersunk threaded holes are formed in the top of the blade (1), the side wall of the blade (1) is matched with the inner wall of the hub (7), and the top of a blade of the blade (1) is flush with the end face of the opening in the top of the hub (7);
the petiole disc (8) is arranged below the blade (1), the top end face of the petiole disc (8) penetrates through a through hole in the bottom of the barrel-shaped structure of the hub (7) to be in contact with the bottom of the blade (1), the side wall of the petiole disc (8) is in contact with the side wall of the through hole, and the petiole disc (8) is fixedly connected with the blade (1) through a plurality of blade screws (9);
the first sealing assembly is arranged on the blade (1) and matched with the blade (1);
the second sealing assembly is arranged on a horizontal table top of the L-shaped structure at the closed end of the bottom of the hub (7);
the pressure assembly is disposed between the second seal assembly and the horizontal deck of the L-shaped structure.
2. The moving blade disc bushing seal lubrication structure of a dynamic axial flow fan according to claim 1, wherein the radial circumferential surface of the blade (1) is provided with a first rectangular ring groove (4) and a second rectangular ring groove (5), wherein:
the first rectangular ring groove (4) is arranged at the upper part of the radial circumferential surface of the blade (1);
the second rectangular ring groove (5) is formed in the lower portion of the radial circumferential surface of the blade (1).
3. The seal lubrication structure for the moving blade disc bushing of the dynamic axial flow fan according to claim 2, wherein the first seal assembly comprises a first seal ring (2) and a third seal ring (3), wherein:
the first sealing ring (2) is arranged in the first rectangular ring groove (4);
and the third sealing ring (3) is arranged in the second rectangular ring groove (5).
4. The dynamic axial fan moving blade disc bushing seal lubrication structure of claim 1, wherein the second seal assembly comprises a petiole disc bushing (6) and a second seal ring (10), wherein:
the petiole disc bushing (6) is of an annular structure, a protrusion (62) which is integrally formed with the petiole disc bushing (6) is arranged in the middle of the outer annular surface of the annular structure, the annular surface of the inner ring of the petiole disc bushing (6) is matched on the circumferential surface of the top of the petiole disc (8), the top of the inner ring is contacted with the bottom of the blade (1), and the annular surface of the bottom of the inner ring is contacted with the horizontal table surface of the L-shaped structure at the bottom of the hub (7);
the second sealing ring (10) is matched between the top of the outer ring surface of the petiole disc lining (6) and the protrusion (62).
5. The seal lubrication structure for the moving blade disc bushing of the axial flow fan, according to claim 4, wherein the pressure component is a spring (11), the spring (11) is disposed between the protrusion (62) on the outer annular surface of the petiole disc bushing (6) and the horizontal table surface of the L-shaped structure, one end of the spring (11) contacts with the bottom surface of the second protrusion, and the other end contacts with the upper surface of the horizontal table surface of the L-shaped structure.
6. The sealing and lubricating structure for the moving blade disc bushing of the dynamic axial flow fan according to claim 4, characterized in that a plurality of through holes are formed in the inner ring surface of the petiole disc bushing (6), and a plurality of graphite blocks (61) are correspondingly arranged on the plurality of through holes in the inner ring surface of the petiole disc bushing (6).
7. The seal and lubrication structure for the moving blade disc bushing of the dynamically adjusted axial flow fan as recited in claim 6, wherein a plurality of through holes of the inner annular surface of the petiole disc bushing (6) are arranged at the middle position of the inner annular surface of the petiole disc bushing (6) and are distributed along the inner annular surface of the petiole disc bushing (6) in an array at intervals.
8. The seal lubrication structure for the moving blade disc bushing of the dynamically adjusted axial flow fan according to claim 4, characterized in that the roughness of the contact surface of the petiole disc bushing (6) and the blade (1) is not higher than Ra12.5.
9. The seal lubrication structure for the moving blade disc bushing of the dynamic adjustment axial flow fan according to claim 3, characterized in that the first seal ring (2) and the second seal ring (10) are O-shaped rings.
10. The seal lubrication structure for the moving blade disc bushing of the dynamic axial flow fan according to claim 3, wherein the third seal ring (3) is a laminated seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220682198.6U CN218542704U (en) | 2022-03-25 | 2022-03-25 | Sealing and lubricating structure for blade disc bushing of moving blade of moving axial flow fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220682198.6U CN218542704U (en) | 2022-03-25 | 2022-03-25 | Sealing and lubricating structure for blade disc bushing of moving blade of moving axial flow fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218542704U true CN218542704U (en) | 2023-02-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220682198.6U Active CN218542704U (en) | 2022-03-25 | 2022-03-25 | Sealing and lubricating structure for blade disc bushing of moving blade of moving axial flow fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218542704U (en) |
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2022
- 2022-03-25 CN CN202220682198.6U patent/CN218542704U/en active Active
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