CN108980349B - Composite seal for centrifugal fan - Google Patents
Composite seal for centrifugal fan Download PDFInfo
- Publication number
- CN108980349B CN108980349B CN201811120866.0A CN201811120866A CN108980349B CN 108980349 B CN108980349 B CN 108980349B CN 201811120866 A CN201811120866 A CN 201811120866A CN 108980349 B CN108980349 B CN 108980349B
- Authority
- CN
- China
- Prior art keywords
- hole
- comb teeth
- main shaft
- asbestos packing
- shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000002131 composite material Substances 0.000 title claims abstract description 24
- 239000010425 asbestos Substances 0.000 claims abstract description 61
- 229910052895 riebeckite Inorganic materials 0.000 claims abstract description 61
- 238000012856 packing Methods 0.000 claims abstract description 55
- 238000007789 sealing Methods 0.000 claims abstract description 38
- 241000886569 Cyprogenia stegaria Species 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 15
- 230000008878 coupling Effects 0.000 description 10
- 238000010168 coupling process Methods 0.000 description 10
- 238000005859 coupling reaction Methods 0.000 description 10
- 239000000945 filler Substances 0.000 description 6
- 244000126211 Hericium coralloides Species 0.000 description 3
- 230000006872 improvement Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
-
- 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
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/26—Sealings between relatively-moving surfaces with stuffing-boxes for rigid sealing rings
- F16J15/30—Sealings between relatively-moving surfaces with stuffing-boxes for rigid sealing rings with sealing rings made of carbon
-
- 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
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/40—Sealings between relatively-moving surfaces by means of fluid
- F16J15/42—Sealings between relatively-moving surfaces by means of fluid kept in sealing position by centrifugal force
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a composite seal for a centrifugal fan, which belongs to the field of engineering machinery and comprises a sealing seat, a machine shell, a main shaft and an asbestos packing, wherein the main shaft is arranged in the machine shell, one end of the main shaft extends out of the machine shell, the sealing seat is connected with the machine shell, the sealing seat is provided with a through hole, one end of the main shaft extending out of the machine shell is positioned in the through hole, the sealing seat is also provided with comb teeth, the comb teeth are positioned in the through hole, the asbestos packing is annular, the asbestos packing is arranged in the through hole, the comb teeth are positioned between the machine shell and the asbestos packing, and the asbestos packing is sleeved on the main shaft. The composite sealing comb teeth for the centrifugal fan provided by the invention have smaller gaps with the main shaft, the eddy current and accumulated resistance generated by the plurality of comb teeth are utilized to effectively reduce leakage of gas and other media in the fan shell into the atmosphere or reduce the entry of the atmosphere into the fan shell, and the asbestos packing tightly attached to the main shaft is arranged at the extreme end of the comb teeth in the sealing seat, so that the double and composite sealing effect is achieved.
Description
Technical Field
The invention relates to the field of engineering machinery, in particular to a composite seal for a centrifugal fan.
Background
The centrifugal ventilator is an industrial device for conveying gas media, but some special fans convey corrosive, toxic, pollution or inert gases, and the sealing performance requirement on shaft end sealing of the fans is high because of pressure difference between the interior of the shell and the atmosphere so as to prevent the media in the shell from leaking into the atmosphere or the atmosphere from entering the interior of the shell. In general, the sealing device of the fan usually uses asbestos filler as a seal, and when the fan runs for a period of time, the asbestos filler rubs with the main shaft, so that the asbestos filler is worn, a certain gap exists between the main shaft and the asbestos filler, and a gas medium in the shell can diffuse outwards through the gap or enter the shell through the atmosphere. Thus, the safety of a working system is influenced, and the running efficiency of a fan is also influenced.
Disclosure of Invention
The invention aims to provide a composite seal for a centrifugal fan, so as to solve the problems that after the conventional fan is operated for a period of time, asbestos filler is abraded due to friction with a main shaft, a certain gap exists between the main shaft and the asbestos filler, the safety of a working system is affected, and the operation efficiency of the fan is also affected.
The invention is realized in the following way:
based on the above object, the invention provides a composite seal for a centrifugal fan, which comprises a sealing seat, a casing, a main shaft and an asbestos packing, wherein the main shaft is installed in the casing, one end of the main shaft extends out of the casing, the sealing seat is connected with the casing, the sealing seat is provided with a through hole, one end of the main shaft extending out of the casing is positioned in the through hole, the sealing seat is also provided with comb teeth, the comb teeth are positioned in the through hole, the asbestos packing is annular, the asbestos packing is installed in the through hole, the comb teeth are positioned between the casing and the asbestos packing, and the asbestos packing is sleeved on the main shaft.
The composite seal for the centrifugal fan is provided with the double seal on the seal seat, the first heavy is the asbestos packing, the second heavy is the comb teeth, the gap between the comb teeth and the main shaft is smaller, the eddy current and the accumulated resistance generated by the plurality of comb teeth are utilized to effectively reduce leakage of gas and other mediums in the fan shell into the atmosphere or reduce the entry of the atmosphere into the fan shell, and the asbestos packing tightly attached to the main shaft is arranged at the extreme end of the comb teeth in the seal seat, so that the double and composite seal effect is achieved, and the medium in the shell is more effectively prevented from leaking or entering the inside of the shell.
In one implementation of the present embodiment: the comb teeth comprise a first working surface and a second working surface, the first working surface and the axial lead of the through hole are obliquely arranged, the first working surface is inwards inclined along the direction that the through hole is far away from the shell, and the second working surface and the axial lead of the through hole are vertically arranged.
The first working face that the slope set up can be better let wind form the vortex between the broach to increase windage.
In one implementation of the present embodiment: the comb teeth are arranged in a plurality, the comb teeth are sequentially distributed around the axial lead of the through hole, and the comb teeth are arranged at intervals along the axial lead of the through hole.
In order to prevent the medium in the shell from leaking along the axial direction of the main shaft, a certain number of comb teeth matched with the pressure difference are designed according to the pressure difference between the inner side and the outer side of the shell by the existing sealing seat, the gaps between the comb teeth of the sealing seat and the main shaft are as small as possible, and the number of comb teeth form enough resistance to the air flow leaking along the main shaft, so that the air flow leakage from the axial direction of the main shaft is effectively reduced; the plurality of broachs can be to form a plurality of broach rings, and broach rings are coaxial with the through-hole, and every broach ring includes a plurality of solitary broachs, and a plurality of broach rings set up along the axial lead interval of through-hole, include a plurality of clearances in every broach ring, and two adjacent broach rings can be staggered the setting, and the clearance of preceding broach ring can be to align with the broach on the later broach ring promptly to conveniently form the vortex.
In one implementation of the present embodiment: the comb teeth are sequentially connected on the same circumference of the through hole, so that a plurality of annular shapes are formed in the through hole along the axial lead of the through hole at intervals.
After the plurality of comb teeth positioned on the same circumference of the through hole are sequentially connected to form a ring shape, namely, gaps on the comb teeth rings are closed, gas in the shell can only pass through the gaps between the comb teeth and the main shaft, meanwhile, the wind resistance can be increased due to the influence of vortex between the adjacent comb teeth rings, and the leakage of gas and other mediums in the fan shell into the atmosphere or the entry of the atmosphere into the fan shell can be effectively reduced.
In one implementation of the present embodiment: the distance between two adjacent comb teeth along the axial lead direction of the through hole is larger than the maximum width of the comb teeth.
In one implementation of the present embodiment: the comb teeth are spiral around the axial lead of the through hole.
The spiral comb teeth can also form vortex.
In one implementation of the present embodiment: the sealing seat is provided with a mounting groove, the mounting groove is annular along the axial lead of the through hole, the mounting groove is recessed outwards along the radial direction of the through hole, the mounting groove is communicated with the through hole, and the asbestos packing is mounted in the mounting groove.
The mounting groove can locate and fix the asbestos packing.
In one implementation of the present embodiment: the composite seal for the centrifugal fan further comprises an annular spring, the spring is sleeved on the asbestos packing, and the spring is located in the mounting groove.
The spring is sleeved outside the asbestos packing, so that the asbestos packing can be contacted with the main shaft more uniformly, and meanwhile, the asbestos packing can still be tightly attached to the main shaft after the asbestos packing is worn.
In one implementation of the present embodiment: the second working surface of the comb teeth farthest from the shell is overlapped with the side wall of the mounting groove.
Based on the above object, the invention further provides a composite seal for a centrifugal fan, which comprises a seal seat, a casing, a seal backing plate, a main shaft and an asbestos packing, wherein the main shaft is installed in the casing, one end of the main shaft extends out of the casing, a flange plate is fixedly connected to the casing, the seal seat is connected with the casing through the flange plate, the seal backing plate is installed between the flange plate and the seal seat, the seal seat is provided with a through hole, one end of the main shaft extending out of the casing is located in the through hole, the seal seat is also provided with comb teeth, the comb teeth are located in the through hole, the asbestos packing is annular, the asbestos packing is installed in the through hole, the comb teeth are located between the casing and the asbestos packing, and the asbestos packing is sleeved on the main shaft.
Firstly, a relatively large gap is needed between the main shaft and the shell due to installation and operation, and medium can leak into and out of the shell through the gap. Because the plate thickness of the shell body is thinner, a thick plate coupling flange is required to be welded on the shell body, a certain number of bolt holes (threaded holes) are drilled on the coupling flange, then a sealing seat is connected with the coupling flange through bolts, and in order to prevent gas in the shell from leaking through a gap between the sealing seat and the coupling flange, a sealing base plate is added between the sealing seat and the coupling flange, and gas medium cannot leak from the sealing base plate under the fastening force of the bolts.
Compared with the prior art, the invention has the beneficial effects that:
the composite seal for the centrifugal fan is provided with the double seal on the seal seat, the first heavy is the asbestos packing, the second heavy is the comb teeth, the gap between the comb teeth and the main shaft is smaller, the eddy current and the accumulated resistance generated by the plurality of comb teeth are utilized to effectively reduce leakage of gas and other mediums in the fan shell into the atmosphere or reduce the entry of the atmosphere into the fan shell, and the asbestos packing tightly attached to the main shaft is arranged at the extreme end of the comb teeth in the seal seat, so that the double and composite seal effect is achieved, and the medium in the shell is more effectively prevented from leaking or entering the inside of the shell.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will briefly explain the practical drawings required in the embodiments or the prior art, and it is obvious that the drawings described below are some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 shows a schematic view of a composite seal for a centrifugal fan provided in embodiment 1 of the present invention;
fig. 2 shows a schematic connection diagram of a seal seat and a casing provided in embodiment 1 of the present invention;
FIG. 3 is a schematic view of a seal holder according to embodiment 1 of the present invention;
fig. 4 shows a partial schematic view of a seal holder according to embodiment 1 of the present invention.
In the figure: 101-a main shaft; 102-a housing; 103-a sealing seat; 104-a flange plate; 105-a sealing gasket; 106-a bolt; 107-asbestos packing; 108-through holes; 109-comb teeth; 110-a first working surface; 111-a second working surface; 112-mounting slots; 113-spring.
Detailed Description
The invention will now be described in further detail by way of specific examples of embodiments in connection with the accompanying drawings.
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention are clearly and completely described above in conjunction with the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Accordingly, the above detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be understood that the terms "orientation" or "positional relationship" are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and to simplify the description, rather than to indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.
In the present invention, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected or integral; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature may include first and second features directly contacting each other, either above or below a second feature, or through additional features contacting each other, rather than directly contacting each other. Moreover, the first feature being above, over, and on the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being below, beneath, and beneath the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is less level than the second feature.
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
Example 1
Referring to fig. 1 to 4, the present embodiment provides a composite seal for a centrifugal fan, including a seal base 103, a housing 102, a main shaft 101 and an asbestos packing 107, the main shaft 101 is installed in the housing 102, and one end of the main shaft 101 extends out of the housing 102, the seal base 103 is connected with the housing 102, the seal base 103 is provided with a through hole 108, one end of the main shaft 101 extending out of the housing 102 is located in the through hole 108, the seal base 103 is also provided with a comb tooth 109, the comb tooth 109 is located in the through hole 108, the asbestos packing 107 is annular, the asbestos packing 107 is installed in the through hole 108, and the comb tooth 109 is located between the housing 102 and the asbestos packing 107, and the asbestos packing 107 is sleeved on the main shaft 101.
The composite seal for the centrifugal fan provided by the embodiment is provided with double seal on the seal seat 103, the first heavy asbestos packing 107, the second heavy asbestos packing 109, the gap between the comb teeth 109 and the main shaft 101 is smaller, the eddy current and the accumulated resistance generated by the plurality of comb teeth 109 are utilized to effectively reduce leakage of gas and other mediums in the shell 102 into the atmosphere or reduce the air from entering the shell 102, and the asbestos packing 107 tightly attached to the main shaft 101 is arranged at the extreme end of the comb teeth 109 in the seal seat 103, so that the double and composite seal effect is achieved, and medium leakage in the shell 102 or the air entering the shell 102 is more effectively prevented.
The comb teeth 109 include a first working surface 110 and a second working surface 111, the first working surface 110 is inclined with the axis of the through hole 108, the first working surface 110 is inclined inward along the direction of the through hole 108 away from the casing 102, and the second working surface 111 is arranged perpendicular to the axis of the through hole 108. The inclined first working surface 110 can better enable wind to form vortex between the comb teeth 109, so that wind resistance is increased.
The comb teeth 109 are arranged in a plurality, the plurality of comb teeth 109 are sequentially arranged around the axial line of the through hole 108, and the plurality of comb teeth 109 are arranged at intervals along the axial line of the through hole 108. In order to prevent the medium in the shell 102 from leaking along the axial direction of the main shaft 101, a certain number of comb teeth 109 matched with the pressure difference are designed by the sealing seat 103 according to the pressure difference between the inner and outer sides of the shell 102, the clearance between the comb teeth 109 of the sealing seat 103 and the main shaft 101 is as small as possible, and the number of comb teeth 109 form enough resistance to the air flow leaking along the main shaft 101, so that the air flow leakage from the axial direction of the main shaft 101 is effectively reduced; the plurality of comb teeth 109 may be formed into a plurality of comb teeth rings, the comb teeth rings are coaxial with the through holes 108, each comb teeth ring includes a plurality of individual comb teeth 109, the plurality of comb teeth rings are arranged along the axial lead of the through holes 108 at intervals, each comb teeth ring includes a plurality of gaps, two adjacent comb teeth rings may be arranged in a staggered manner, that is, the gaps of the former comb teeth ring may be aligned with the comb teeth 109 on the latter comb teeth ring, thereby facilitating formation of eddy currents.
The plurality of comb teeth 109 located on the same circumference of the through hole 108 are sequentially connected, so that a plurality of annular shapes are formed in the through hole 108 and are arranged at intervals along the axis of the through hole 108. After the plurality of comb teeth 109 positioned on the same circumference of the through hole 108 are sequentially connected to form a ring shape, namely, gaps on the comb teeth rings are closed, gas in the shell can only pass through the gaps between the comb teeth 109 and the main shaft 101, and meanwhile, the wind resistance can be increased due to the influence of vortex between the adjacent comb teeth rings, so that the leakage of gas and other mediums in the shell 102 into the atmosphere or the entry of the atmosphere into the shell 102 can be effectively reduced.
In the present embodiment, the distance between two adjacent comb teeth 109 in the axial line direction of the through hole 108 can be made larger than the maximum width of the comb teeth 109.
The seal seat 103 is provided with a mounting groove 112, the mounting groove 112 is annular along the axial line of the through hole 108, the mounting groove 112 is recessed outwards along the radial direction of the through hole 108, the mounting groove 112 is communicated with the through hole 108, and the asbestos packing 107 is mounted in the mounting groove 112. The mounting groove 112 may provide a location and securement for the asbestos packing 107.
The composite seal for the centrifugal fan further comprises an annular spring 113, the spring 113 is sleeved on the asbestos packing 107, and the spring 113 is located in the mounting groove. The spring 113 is sleeved outside the asbestos packing 107, so that the asbestos packing 107 can be contacted with the main shaft 101 more uniformly, and meanwhile, the asbestos packing 107 can still be tightly attached to the main shaft 101 after the asbestos packing 107 is worn.
As a preferred implementation of this embodiment, the second working surface 111 of the comb teeth 109 farthest from the casing 102 may be overlapped with the side wall of the mounting groove 112.
Example 2
The present embodiment also provides a composite seal for a centrifugal fan, which is a further improvement on the basis of the technical solution of embodiment 1, and the technical solution described in embodiment 1 is also applicable to the present embodiment, and the disclosed technical solution of embodiment 1 is not repeated.
Specifically, the difference between the present embodiment and embodiment 1 is that the composite sealed comb teeth 109 for a centrifugal fan provided in the present embodiment are spiral around the axis of the through hole 108.
The spiral comb teeth 109 can also form vortex, and when gas flows along the channels formed by the comb teeth 109, the resistance of the comb teeth 109 along the axial line direction of the through holes 108 is large, so that leakage of gas and other mediums in the casing 102 into the atmosphere or entry of the atmosphere into the casing 102 can be effectively reduced.
Example 3
The embodiment provides a compound seal for centrifugal fan, including seal holder 103, casing 102, sealing backing plate 105, main shaft 101 and asbestos packing 107, main shaft 101 installs in casing 102, and the one end of main shaft 101 stretches out casing 102, fixedly connected with ring flange 104 on the casing 102, seal holder 103 passes through ring flange 104 with casing 102 and is connected, sealing backing plate 105 installs between ring flange 104 and seal holder 103, seal holder 103 is provided with through-hole 108, the one end that main shaft 101 stretches out casing 102 is located through-hole 108, seal holder 103 still is provided with broach 109, broach 109 is located through-hole 108, asbestos packing 107 is the annular, asbestos packing 107 installs in through-hole 108, and broach 109 is located between casing 102 and asbestos packing 107, main shaft 101 is located to asbestos packing 107 cover.
First, a relatively large gap is required between the spindle 101 and the casing 102 for installation and operation, and medium can leak into and out of the casing through the gap. Because the plate thickness of the casing 102 is thin, a thick plate coupling flange needs to be welded on the casing 102, a certain number of bolt 106 holes (threaded holes) are drilled on the coupling flange, then the sealing seat 103 and the coupling flange are connected by the bolts 106, in order to prevent gas in the casing from leaking through a gap between the sealing seat 103 and the coupling flange, a sealing base plate 105 is added between the sealing seat 103 and the coupling flange, and gas medium cannot leak from the sealing base plate under the fastening force of the bolts 106.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. The composite seal for the centrifugal fan is characterized by comprising a sealing seat, a shell, a main shaft and an asbestos packing, wherein the main shaft is arranged in the shell, one end of the main shaft extends out of the shell, the sealing seat is connected with the shell, the sealing seat is provided with a through hole, one end of the main shaft, which extends out of the shell, is positioned in the through hole, the sealing seat is also provided with comb teeth, the comb teeth are positioned in the through hole, the asbestos packing is annular, the asbestos packing is arranged in the through hole, the comb teeth are positioned between the shell and the asbestos packing, and the asbestos packing is sleeved on the main shaft; the comb teeth comprise a first working surface and a second working surface, the first working surface and the axial lead of the through hole are obliquely arranged, the first working surface is obliquely inwards arranged along the direction of the through hole away from the shell, and the second working surface and the axial lead of the through hole are vertically arranged; the comb teeth are arranged in a plurality, the comb teeth are sequentially arranged around the axial lead of the through hole, and the comb teeth are arranged at intervals along the axial lead of the through hole; the comb teeth positioned on the same circumference of the through hole are sequentially connected, so that a plurality of annular shapes which are arranged at intervals along the axial lead of the through hole are formed in the through hole; the distance between two adjacent comb teeth along the axial line direction of the through hole is larger than the maximum width of the comb teeth; the comb teeth are spiral around the axial lead of the through hole; the sealing seat is provided with a mounting groove, the mounting groove is annular along the axial lead of the through hole, the mounting groove is recessed outwards along the radial direction of the through hole, the mounting groove is communicated with the through hole, and the asbestos packing is mounted in the mounting groove.
2. The composite seal for a centrifugal fan according to claim 1, further comprising a ring-shaped spring, wherein the spring is sleeved on the asbestos packing, and the spring is positioned in the mounting groove.
3. The composite seal for a centrifugal fan of claim 2 wherein said second working surface of said comb teeth furthest from said housing coincides with a side wall of said mounting groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811120866.0A CN108980349B (en) | 2018-09-20 | 2018-09-20 | Composite seal for centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811120866.0A CN108980349B (en) | 2018-09-20 | 2018-09-20 | Composite seal for centrifugal fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108980349A CN108980349A (en) | 2018-12-11 |
| CN108980349B true CN108980349B (en) | 2024-02-06 |
Family
ID=64543931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811120866.0A Active CN108980349B (en) | 2018-09-20 | 2018-09-20 | Composite seal for centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108980349B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59106763A (en) * | 1982-12-08 | 1984-06-20 | Nichias Corp | Gland packing |
| CN201874723U (en) * | 2010-11-12 | 2011-06-22 | 邵阳恒远资江水电设备有限公司 | Main shaft-sealing structure for hydroturbines |
| CN102536884A (en) * | 2012-02-28 | 2012-07-04 | 苏州麦德尔机械有限公司 | Bearing pedestal seal device of draught fan |
| CN102619776A (en) * | 2012-04-01 | 2012-08-01 | 张家港市东丰特种风机有限公司 | Air sealing device for main shaft in fan |
| CN202691041U (en) * | 2012-06-29 | 2013-01-23 | 东芝水电设备（杭州）有限公司 | Bulb through-flow turbine non-forcing water supply spindle seal |
| CN203214391U (en) * | 2013-02-27 | 2013-09-25 | 重庆通用工业(集团)有限责任公司 | Centrifugal fan sealing structure |
| CN104019238A (en) * | 2014-06-20 | 2014-09-03 | 济南风机厂有限责任公司 | Comb tooth shaped elasticity self-adaptive sealing structure |
| CN105604963A (en) * | 2015-12-24 | 2016-05-25 | 江苏金通灵流体机械科技股份有限公司 | Coal gas pressurizing machine |
| CN106438448A (en) * | 2016-08-30 | 2017-02-22 | 四川三维鼓风机有限公司 | Denitration high-temperature boosting fan for fuel coal power plant |
| CN208885970U (en) * | 2018-09-20 | 2019-05-21 | 重庆通用工业(集团)有限责任公司 | A kind of centrifugal blower compound seal |
-
2018
- 2018-09-20 CN CN201811120866.0A patent/CN108980349B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59106763A (en) * | 1982-12-08 | 1984-06-20 | Nichias Corp | Gland packing |
| CN201874723U (en) * | 2010-11-12 | 2011-06-22 | 邵阳恒远资江水电设备有限公司 | Main shaft-sealing structure for hydroturbines |
| CN102536884A (en) * | 2012-02-28 | 2012-07-04 | 苏州麦德尔机械有限公司 | Bearing pedestal seal device of draught fan |
| CN102619776A (en) * | 2012-04-01 | 2012-08-01 | 张家港市东丰特种风机有限公司 | Air sealing device for main shaft in fan |
| CN202691041U (en) * | 2012-06-29 | 2013-01-23 | 东芝水电设备（杭州）有限公司 | Bulb through-flow turbine non-forcing water supply spindle seal |
| CN203214391U (en) * | 2013-02-27 | 2013-09-25 | 重庆通用工业(集团)有限责任公司 | Centrifugal fan sealing structure |
| CN104019238A (en) * | 2014-06-20 | 2014-09-03 | 济南风机厂有限责任公司 | Comb tooth shaped elasticity self-adaptive sealing structure |
| CN105604963A (en) * | 2015-12-24 | 2016-05-25 | 江苏金通灵流体机械科技股份有限公司 | Coal gas pressurizing machine |
| CN106438448A (en) * | 2016-08-30 | 2017-02-22 | 四川三维鼓风机有限公司 | Denitration high-temperature boosting fan for fuel coal power plant |
| CN208885970U (en) * | 2018-09-20 | 2019-05-21 | 重庆通用工业(集团)有限责任公司 | A kind of centrifugal blower compound seal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108980349A (en) | 2018-12-11 |
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