CN220551284U - Shaft seal device for isolating heat radiation influence of shell - Google Patents
Shaft seal device for isolating heat radiation influence of shell Download PDFInfo
- Publication number
- CN220551284U CN220551284U CN202322292873.1U CN202322292873U CN220551284U CN 220551284 U CN220551284 U CN 220551284U CN 202322292873 U CN202322292873 U CN 202322292873U CN 220551284 U CN220551284 U CN 220551284U
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- China
- Prior art keywords
- shaft seal
- bottom plate
- shaft
- centrifugal fan
- main
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- 230000005855 radiation Effects 0.000 title claims abstract description 20
- 230000000694 effects Effects 0.000 claims abstract description 9
- 238000002955 isolation Methods 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 53
- 238000009413 insulation Methods 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000011490 mineral wool Substances 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000000191 radiation effect Effects 0.000 claims 2
- 230000003044 adaptive effect Effects 0.000 claims 1
- 238000001816 cooling Methods 0.000 description 7
- 238000009423 ventilation Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The application discloses a shaft seal device for isolating casing thermal radiation influences, it includes shaft seal bottom plate, shaft seal apron and heat insulating board, the shaft seal apron with the shaft seal bottom plate is connected, the heat insulating board set up in the shaft seal bottom plate is kept away from the one side of shaft seal apron, the heat insulating board with the shaft seal bottom plate is connected with a plurality of connecting pieces, the week side of shaft seal bottom plate is used for being connected with centrifugal fan's curb plate, the main shaft hole has been seted up to the shaft seal bottom plate, the auxiliary shaft hole has been seted up to the shaft seal apron, the main shaft hole with the coaxial setting of auxiliary shaft hole forms and places the chamber, place the chamber and be used for supplying centrifugal fan's main shaft to pass, place the intracavity be provided with be used for making centrifugal fan inside and external isolation's seal assembly, the shaft seal bottom plate with shaft seal apron all protruding being equipped with the restriction in opposite one side seal assembly removes spacing portion. The centrifugal fan has the effect of saving the operation cost of the centrifugal fan.
Description
Technical Field
The application relates to the field of sealing devices, in particular to a shaft seal device for isolating the influence of heat radiation of a shell.
Background
Centrifugal ventilators are widely used for ventilation, dust removal and cooling of industries, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and induced draft of boilers and industrial kilns; cooling and ventilation in air-conditioning devices and household appliances; drying and selecting grains; inflation and propulsion of wind tunnel wind source and air cushion ship, etc. With the development of modern industry, shaft seal technology for fans has also changed significantly.
The centrifugal fan has the advantages that when the centrifugal fan works, the heat of the fan body is transmitted to the bearing through heat radiation, so that the working temperature of the bearing of the centrifugal fan is increased, a method of preparing a thin oil station and passing cooling water is generally needed to keep the heat balance of the bearing for reducing the temperature, namely, oil consumption and water consumption are needed when the bearing is cooled, and when the temperature of the bearing of the centrifugal fan is increased too fast, a large amount of cooling water and cooling lubricating oil are needed, so that the operation cost of the centrifugal fan is increased, and improvement is needed.
Disclosure of Invention
In order to save the operation cost of the centrifugal fan, the application provides a shaft seal device for isolating the influence of heat radiation of a casing.
The application provides a shaft seal device for isolating casing thermal radiation influences adopts following technical scheme:
the utility model provides a shaft seal device for isolating casing thermal radiation influences, includes shaft seal bottom plate, shaft seal apron and heat insulating board, the shaft seal apron with the shaft seal bottom plate is connected, the heat insulating board set up in the shaft seal bottom plate keep away from the one side of shaft seal apron, the heat insulating board with the shaft seal bottom plate is connected with a plurality of connecting pieces, in this embodiment, the quantity of connecting piece is ten; the periphery of shaft seal bottom plate is used for being connected with centrifugal fan's curb plate, the main shaft hole has been seted up to the shaft seal bottom plate, the vice shaft hole has been seted up to the shaft seal apron, the main shaft hole with the coaxial setting in vice shaft hole forms places the chamber, place the chamber and be used for supplying centrifugal fan's main shaft to pass, place the intracavity and be provided with the seal assembly that is used for making centrifugal fan inside and external isolation, the shaft seal bottom plate with the shaft seal apron is all protruding to be equipped with the restriction in opposite sides seal assembly removes spacing portion.
Through adopting above-mentioned technical scheme, bearing seal bottom plate, bearing seal apron and seal assembly combined action make centrifugal fan inside and external isolation, play sealed effect in order to form the bearing seal, and the heat in the heat insulating board messenger casing is difficult to pass through the heat radiation mode and transmit to centrifugal fan's bearing to reduce the rate of heating up of bearing, reduce the bearing cooling demand to centrifugal fan promptly, thereby save centrifugal fan's running cost.
Preferably, the periphery of the shaft seal bottom plate is connected with an annular shaft seal piece, and one side surface of the annular shaft seal piece, which is close to the side plate of the centrifugal fan, is used for being connected with the side plate of the centrifugal fan.
Through adopting above-mentioned technical scheme, annular shaft seal spare sets up between shaft seal bottom plate and centrifugal fan's curb plate, improves sealed effect.
Preferably, the seal assembly comprises a main seal ring and a clamp ring arranged on two sides of the main seal ring, wherein the inner diameter of the main seal ring is mutually matched with the outer diameter of a main shaft of the centrifugal fan, the inner diameter of the clamp ring is larger than that of the main seal ring, and the main seal ring and the clamp ring are connected through a detachable part.
Through adopting above-mentioned technical scheme, the internal diameter of main sealing ring and centrifugal fan's main shaft external diameter looks adaptation each other, improves sealed effect.
Preferably, one side or two sides of the main sealing ring are provided with secondary sealing rings, the inner diameter of each secondary sealing ring is mutually matched with the outer diameter of the main shaft of the centrifugal fan, and the main sealing ring, the secondary sealing ring and the compression ring are connected through a detachable part.
Through adopting above-mentioned technical scheme, connect through detachable parts between main sealing ring, secondary sealing ring and the clamp ring, improve seal assembly's joint strength.
Preferably, the shaft seal bottom plate is provided with a plurality of threaded holes, one surface of the heat insulation plate, which is close to the shaft seal bottom plate, is provided with a plurality of threaded grooves, the positions and the number of the threaded holes are matched with those of the threaded grooves, the connecting piece is an inner hexagon screw, the connecting piece penetrates through the threaded holes and penetrates through the threaded grooves, and the connecting piece is in threaded connection with the heat insulation plate and the shaft seal bottom plate.
Through adopting above-mentioned technical scheme, hexagon socket head cap screw connects heat insulating board and bearing seal bottom plate, improves holistic joint strength.
Preferably, a washer is arranged between the nut of the inner hexagon screw and the shaft seal bottom plate.
Through adopting above-mentioned technical scheme, for the nut and the heat insulating board of socket head cap screw provide the buffering, make the heat insulating board be difficult for receiving the nut extrusion of socket head cap screw and warp.
Preferably, the shaft seal bottom plate and the shaft seal cover plate are connected through a bolt assembly.
Through adopting above-mentioned technical scheme, the bolt assembly is convenient for relieve the connection between bearing seal bottom plate and the bearing seal apron, convenient operation is high-efficient.
Preferably, the main sealing ring is a mineral wool board, and the secondary sealing ring is a copper board.
By adopting the technical scheme, the material is convenient to obtain, the cost is lower, and the operation cost of the centrifugal ventilator is further saved.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the shaft seal bottom plate, the shaft seal cover plate and the sealing assembly jointly act to isolate the inside of the centrifugal ventilator from the outside, so that a shaft seal is formed, heat in the shell is not easy to transfer to a bearing of the centrifugal ventilator in a heat radiation mode by the heat insulation plate, so that the temperature rising rate of the bearing is reduced, namely the cooling requirement on the bearing of the centrifugal ventilator is reduced, and the running cost of the centrifugal ventilator is saved;
2. the annular shaft seal piece is arranged between the shaft seal bottom plate and the side plate of the centrifugal ventilator, so that the sealing effect is improved;
3. the bolt component is convenient for relieving the connection between the shaft seal bottom plate and the shaft seal cover plate, and is convenient and efficient to operate.
Drawings
Fig. 1 is a schematic view of an embodiment of the present application in which a shaft seal device is mounted to a centrifugal fan.
Fig. 2 is a schematic overall structure of an embodiment of the present application.
Fig. 3 is a schematic front view of the overall structure of an embodiment of the present application.
Fig. 4 is a schematic rear view of the overall structure of an embodiment of the present application.
Fig. 5 is a schematic cross-sectional view of a part of the structure of an embodiment of the present application.
Reference numerals illustrate:
1. a shaft seal bottom plate; 2. a shaft seal cover plate; 3. a heat insulating plate; 4. an annular shaft seal; 5. a bolt assembly; 6. a connecting piece; 7. a gasket; 8. a detachable member; 9. a groove; 10. a seal assembly; 101. a primary seal ring; 102. a secondary seal ring; 103. a clamp ring; 11. a limit part; 12. a placement cavity; 13. a centrifugal ventilator; 131. a main shaft; 132. and a side plate.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-5.
The embodiment of the application discloses a shaft seal device for isolating heat radiation influence of a shell. Referring to fig. 1 to 4, a shaft seal device for isolating casing thermal radiation influence, including shaft seal bottom plate 1, shaft seal apron 2 and heat insulating board 3, in this embodiment, heat insulating board 3 adopts asbestos panel, shaft seal bottom plate 1 with shaft seal apron 2 passes through bolt assembly 5 and connects, and heat insulating board 3 sets up in shaft seal bottom plate 1 keeps away from shaft seal apron 2's one side, and heat insulating board 3 is connected with a plurality of connecting pieces 6 with shaft seal bottom plate 1, in this embodiment, a plurality of screw holes have been seted up to shaft seal bottom plate 1, heat insulating board 3 is close to shaft seal bottom plate 1's one side has seted up a plurality of screw grooves, the screw hole with the position and the quantity adaptation of screw groove, specifically, the screw groove is evenly distributed along the circumference of heat insulating board 3, screw hole is evenly spaced along shaft seal bottom plate 1's circumference, connecting piece 6 is hexagon socket head cap screw, connecting piece 6 run through the screw hole wear to the screw groove, connecting piece 6 with heat insulating board 3 with shaft seal bottom plate 1 threaded connection nut with be provided with seal 7 between the bottom plate 1.
Referring to fig. 1 to 4, the outer diameter of the heat insulating plate 3 is the same as the outer diameter of the shaft seal bottom plate 1, an annular shaft seal 4 is connected to the peripheral side of the shaft seal bottom plate 1, one side of the annular shaft seal 4 close to the side plate 132 of the centrifugal fan 13 is used for being connected with the side plate 132 of the centrifugal fan 13, in this embodiment, the annular shaft seal 4 is connected with the side plate 132 of the centrifugal fan 13 by electric welding,
referring to fig. 2 to 5, the shaft seal bottom plate 1 is provided with a main shaft 131 hole, the shaft seal cover plate 2 is provided with a secondary shaft hole, the main shaft 131 hole and the secondary shaft hole are coaxially arranged and form a placing cavity 12, the placing cavity 12 is used for allowing the main shaft 131 of the centrifugal ventilator 13 to pass through, a sealing assembly 10 for isolating the inside of the centrifugal ventilator 13 from the outside is arranged in the placing cavity 12, and a limiting part 11 for limiting the movement of the sealing assembly 10 is convexly arranged on the opposite sides of the shaft seal bottom plate 1 and the shaft seal cover plate 2.
Referring to fig. 1 to 5, a through shaft hole which is mutually matched with the outer diameter of the main shaft 131 of the centrifugal fan 13 is formed in the middle of the sealing assembly 10, the sealing assembly 10 is arranged in the placing cavity 12, gaps (axial gaps are not shown in the drawing) are reserved between the sealing assembly 10 and the placing cavity 12 in the axial and radial directions, the sealing assembly 10 is provided with a certain deformation space when the main shaft 131 of the centrifugal fan 13 is expanded by heating, and the shaft seal bottom plate 1 and the shaft seal cover plate 2 are provided with limiting parts 11 which limit the rotation of the sealing assembly 10. In this embodiment, the seal assembly 10 includes a main seal ring 101 and clamp rings 103 disposed on two sides of the main seal ring 101, wherein an inner diameter of the main seal ring 101 is matched with an outer diameter of a main shaft 131 of the centrifugal fan 13, an inner diameter of the clamp ring 103 is larger than an inner diameter of the main seal ring 101, and the main seal ring 101 and the clamp ring 103 are connected by a detachable member 8. In order to prolong the service life of the main sealing ring 101, reduce the burr that main sealing ring 101 produced in the friction with the main shaft 131 of centrifugal fan 13, one side or both sides of main sealing ring 101 are provided with secondary sealing ring 102, and secondary sealing ring 102's internal diameter and centrifugal fan 13's main shaft 131 external diameter mutually adapt, in this application embodiment, main sealing ring 101 is the mineral wool board, secondary sealing ring 102 is the copper, connects through detachable part 8 between main sealing ring 101, secondary sealing ring 102 and the clamp ring 103, and in this application embodiment, detachable part 8 is bolt and packing ring 7, and packing ring 7 sets up between bolt and shaft seal apron 2, and shaft seal apron 2 concave is equipped with a plurality of recesses 9 and supplies the bolt embedding, and a plurality of recesses 9 are along the circumference even interval setting of shaft seal apron 2.
Referring to fig. 1 to 5, in the embodiment of the present application, the shaft seal cover plate 3 and the seal assembly 10 are equally divided into an upper portion and a lower portion to form a split structure, the upper portion and the lower portion of the shaft seal cover plate 3 are both convexly provided with a mounting portion, the upper portion and the lower portion of the shaft seal cover plate 3 are connected through bolts, when the seal assembly 10 needs to be replaced, the upper portion and the lower portion of the shaft seal cover plate 3 are released from the bolt connection, and then the seal assembly 10 can be replaced by splitting the upper portion and the lower portion of the seal assembly 10, so that the shaft withdrawal operation is not required, and the replacement operation of the seal assembly 10 is convenient and efficient.
The implementation principle of the shaft seal device for isolating the influence of heat radiation of the shell is as follows: referring to fig. 1, during assembly, the shaft seal bottom plate 1 is welded on the casing side plate 132 of the centrifugal ventilator 13 through the annular shaft seal piece 4, the shaft seal cover plate 2 and the shaft seal bottom plate 1 are connected to form a whole through the bolt assembly 5, the seal assembly 10 is correspondingly matched with the main shaft 131 of the centrifugal ventilator 13, the seal assembly 10 is arranged in the placing cavity 12, and the bolts of the detachable component 8 are embedded in the grooves 9. When the high-temperature fan just starts to operate, the sealing assembly 10 rotates along with the main shaft 131 of the centrifugal fan 13, when the head of the bolt rotating to the detachable part 8 is tightly propped against the inner wall of the groove 9, the main shaft 131 of the centrifugal fan 13 continues to rotate, the sealing assembly 10 stops rotating, and the inner wall of the sealing assembly 10 is in friction sealing with the outer surface of the main shaft 131 of the centrifugal fan 13. When the shell is heated and expanded, the spindle 131 of the centrifugal ventilator 13 drives the shaft seal cover plate 2 to rotate together with the shaft seal bottom plate 1, the sealing assembly 10 is static relative to the shaft seal bottom plate 1, the matching between the sealing assembly 10 and the spindle 131 of the centrifugal ventilator 13 is unchanged, and the sealing purpose is achieved.
The shaft seal bottom plate 1, the shaft seal cover plate 2 and the sealing assembly 10 jointly act to isolate the inside of the centrifugal ventilator 13 from the outside, the sealing effect is achieved to form a shaft seal, and the heat insulation plate 3 enables heat in the shell not to be easily transferred to the bearing of the centrifugal ventilator 13 in a heat radiation mode, so that the temperature rising rate of the bearing is reduced, namely the cooling requirement on the bearing of the centrifugal ventilator 13 is reduced, and the operation cost of the centrifugal ventilator 13 is saved.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (8)
1. A shaft seal device for isolating casing thermal radiation influences, characterized by, including shaft seal bottom plate (1), shaft seal apron (2) and heat insulating board (3), shaft seal apron (2) with shaft seal bottom plate (1) are connected, heat insulating board (3) set up in shaft seal bottom plate (1) keep away from one side of shaft seal apron (2), heat insulating board (3) with shaft seal bottom plate (1) are connected with a plurality of connecting pieces (6), the week side of shaft seal bottom plate (1) is used for being connected with curb plate (132) of centrifugal fan (13), shaft seal bottom plate (1) has seted up main shaft (131) hole, shaft seal apron (2) has seted up the auxiliary shaft hole, main shaft (131) hole with auxiliary shaft hole coaxial setting forms places chamber (12), place chamber (12) and be used for supplying centrifugal fan (13) main shaft (131) to pass, place and be provided with in chamber (12) and be used for making centrifugal fan (13) inside and external isolation seal assembly (10), bottom plate (1) with shaft seal apron (2) are equipped with opposite to one side and are equipped with seal assembly (11) and are all restricted portion that removes.
2. The shaft seal device for isolating the influence of heat radiation of a casing according to claim 1, characterized in that an annular shaft seal piece (4) is connected to the peripheral side of the shaft seal bottom plate (1), and one surface of the annular shaft seal piece (4) away from the shaft seal bottom plate (1) is used for being connected with a side plate (132) of a centrifugal fan (13).
3. Shaft seal device for insulating against heat radiation effects of a machine casing according to claim 1, characterized in that the sealing assembly (10) comprises a main sealing ring (101) and clamping rings (103) arranged on both sides of the main sealing ring (101), the inner diameter of the main sealing ring (101) is mutually adapted to the outer diameter of a main shaft (131) of a centrifugal fan (13), the inner diameter of the clamping rings (103) is larger than the inner diameter of the main sealing ring (101), and the main sealing ring (101) and the clamping rings (103) are connected by a detachable part (8).
4. A shaft seal device for insulating against heat radiation effects of a machine casing according to claim 3, characterized in that one or both sides of the primary sealing ring (101) are provided with secondary sealing rings (102), the inner diameter of the secondary sealing rings (102) is mutually adapted to the outer diameter of the main shaft (131) of the centrifugal fan (13), and the primary sealing rings (101), the secondary sealing rings (102) and the compression rings (103) are connected by means of detachable parts (8).
5. The shaft seal device for isolating the heat radiation influence of the shell according to claim 1, wherein a plurality of threaded holes are formed in the shaft seal bottom plate (1), a plurality of threaded grooves are formed in one surface, close to the shaft seal bottom plate (1), of the heat insulation plate (3), the positions and the number of the threaded holes are adaptive, the connecting piece (6) is an inner hexagon screw, the connecting piece (6) penetrates through the threaded holes and penetrates through the threaded grooves, and the connecting piece (6) is in threaded connection with the heat insulation plate (3) and the shaft seal bottom plate (1).
6. Shaft sealing device for isolating the influence of heat radiation of a machine casing according to claim 5, characterized in that a washer (7) is arranged between the nut of the socket head cap screw and the shaft sealing bottom plate (1).
7. Shaft seal arrangement for insulating the effects of heat radiation of a machine housing according to claim 1, characterized in that the shaft seal bottom plate (1) and the shaft seal cover plate (2) are connected by means of a bolt assembly (5).
8. Shaft seal arrangement for insulating the effect of heat radiation of a machine casing according to claim 4, characterized in that the primary sealing ring (101) is a mineral wool plate and the secondary sealing ring (102) is a copper plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322292873.1U CN220551284U (en) | 2023-08-24 | 2023-08-24 | Shaft seal device for isolating heat radiation influence of shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322292873.1U CN220551284U (en) | 2023-08-24 | 2023-08-24 | Shaft seal device for isolating heat radiation influence of shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220551284U true CN220551284U (en) | 2024-03-01 |
Family
ID=90003374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322292873.1U Active CN220551284U (en) | 2023-08-24 | 2023-08-24 | Shaft seal device for isolating heat radiation influence of shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220551284U (en) |
-
2023
- 2023-08-24 CN CN202322292873.1U patent/CN220551284U/en active Active
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