CN213512075U - Oil seal structure of air preheater guide bearing - Google Patents
Oil seal structure of air preheater guide bearing Download PDFInfo
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- CN213512075U CN213512075U CN202022156969.1U CN202022156969U CN213512075U CN 213512075 U CN213512075 U CN 213512075U CN 202022156969 U CN202022156969 U CN 202022156969U CN 213512075 U CN213512075 U CN 213512075U
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Abstract
The utility model discloses an air heater direction bearing's oil blanket structure, air heater with direction bearing interference fit, air heater with be equipped with the packing bed of material between the direction bearing, just air heater's tip is equipped with felt layer and polytetrafluoroethylene layer, just the felt layer with the polytetrafluoroethylene layer with the sealed cooperation of periphery of direction bearing, the felt layer and/or the polytetrafluoroethylene layer with be equipped with interior big envelope between the direction bearing, interior big envelope with the sealed cooperation of periphery of direction bearing. Use the utility model discloses an air heater guide bearing sets up multistage sealed, reduces or avoids the dust to get into the bearing box, guarantees the cleanliness factor of grease, has reduced the bearing wearing and tearing, and the leakproofness is strong to extension guide bearing's life.
Description
Technical Field
The utility model relates to an oil blanket field especially relates to an air heater guide bearing's oil blanket structure.
Background
Each furnace of the unit is provided with two three-bin heating surface rotary air preheaters, the guide bearing of each air preheater mainly has the function of providing guide and support for the air preheaters, the guide bearing is generally lubricated by lubricating grease, the oil seal of the guide bearing is embedded filler seal, a gap is formed between the oil seal and a shaft in the operation process, in addition, the guide bearing has poor operation environment, high temperature and large dust, ash particles are easily caused to enter a bearing box from the gap between the oil seal and the shaft and are mixed with the lubricating grease to intensify bearing abrasion, meanwhile, the single embedded filler seal structure has poor sealing performance and short service life of the guide bearing.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an air heater direction bearing's oil blanket structure to solve air heater direction bearing's wearing and tearing and the poor problem of leakproofness.
In order to solve the above problem, the utility model adopts the following technical scheme:
the utility model provides an air heater direction bearing's oil blanket structure, air heater with direction bearing interference fit, air heater with be equipped with the packing bed of material between the direction bearing, just air heater's tip is equipped with felt layer and polytetrafluoroethylene layer, just the felt layer with the polytetrafluoroethylene layer with the sealed cooperation of periphery of direction bearing, felt layer and/or the polytetrafluoroethylene layer with be equipped with interior big envelope between the direction bearing, interior big envelope with the sealed cooperation of periphery of direction bearing.
The inner sealing sleeve comprises a plurality of inner sealing main bodies which are distributed in the circumferential direction, and an inner filling material is arranged between the inner sealing main bodies and the periphery of the guide bearing.
The inner filling material is in an arc plate shape.
And an inner sealing groove is formed between the adjacent inner sealing main bodies, a sealing plate is arranged in the inner sealing groove, the sealing plate is connected with the inner sealing sleeve through an elastic piece, and the sealing plate is in sealing fit with the periphery of the guide bearing.
The sealing plate is an arc-shaped plate, and the inner side surface of the arc-shaped plate is in sealing fit with the periphery of the guide bearing.
The sealing plate is characterized in that a positioning groove extending along the axial direction is arranged in the sealing plate, a positioning plate is arranged in the positioning groove, and the positioning plate is in sliding fit with the positioning groove.
The air preheater is internally provided with a first groove, the packing material layer is arranged in the first groove, and the packing material layer is in sealing fit with the periphery of the guide bearing.
And a second groove is formed in the felt layer and/or the polytetrafluoroethylene layer, and the inner sealing sleeve is arranged in the second groove.
The inner envelope is in sealing connection with the second groove.
The felt layer and the polytetrafluoroethylene layer are fixedly connected with the air preheater through threaded fasteners.
The utility model discloses a technical scheme can reach following beneficial effect: use the utility model discloses an air heater guide bearing sets up multistage sealed, reduces or avoids the dust to get into the bearing box, guarantees the cleanliness factor of grease, has reduced the bearing wearing and tearing, and the leakproofness is strong to extension guide bearing's life.
Drawings
The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:
FIG. 1 is a cross-sectional view of an oil seal structure of a guide bearing of an air preheater according to the present invention;
FIG. 2 is a schematic structural view of the middle guide bearing of the present invention before connecting with the inner sleeve;
fig. 3 is a schematic view of the structure of the middle guide bearing and the inner envelope after being connected.
Description of reference numerals:
1 air preheater
2 guide bearing
3 layer of sealing compound
4 felt layer
5 layer of polytetrafluoroethylene
6 threaded hole
7 threaded fastener
8 inner sealing sleeve
81 internal sealing body
9 inner seal groove
10 spring
11 sealing plate
12 locating slot
13 positioning plate
14 inner packing material
15 first groove
16 second groove
Detailed Description
To make the purpose, technical solution and advantages of the present invention clearer, the following will combine the embodiments of the present invention and the corresponding drawings to clearly and completely describe the technical solution of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The technical solutions disclosed in the embodiments of the present invention are described in detail below with reference to the accompanying drawings.
As shown in fig. 1-3, the utility model provides an air heater direction bearing's oil blanket structure, air heater 1 and direction bearing 2 interference fit, be equipped with the packing bed of material 3 between air heater 1 and the direction bearing 2, and air heater 1's tip is equipped with felt layer 4 and polytetrafluoroethylene layer 5, and felt layer 4 and polytetrafluoroethylene layer 5 and direction bearing 2's periphery seal cooperation, be equipped with interior big envelope 8 between felt layer 4 and/or polytetrafluoroethylene layer 5 and the direction bearing 2, interior big envelope 8 and direction bearing 2's periphery seal cooperation. The material filling layer 3 forms preliminary sealing between the air preheater 1 and the guide bearing 2, the felt layer 4 and the polytetrafluoroethylene layer 5 form secondary sealing, the inner envelope 8 forms sealing again between the felt layer 4 and the polytetrafluoroethylene layer 5 and the guide bearing 2, multistage sealing is arranged, dust is reduced or avoided entering a bearing box, the cleanliness of grease is guaranteed, bearing abrasion is reduced, the sealing performance is strong, and therefore the service life of the guide bearing is prolonged.
In an embodiment of the present invention, the inner sealing sleeve 8 includes a plurality of inner sealing bodies 81 distributed circumferentially, and an inner packing 14 is disposed between the inner sealing bodies 81 and the outer periphery of the guide bearing 2. The sealing between the inner sealing body 81 and the guide bearing 2 is realized by the inner sealing material 14, and preferably, the inner sealing material 14 is in an arc-shaped plate shape, so that the fit sealing between the inner sealing body 81 and the guide bearing 2 is better realized.
In this embodiment, an inner seal groove 9 is formed between adjacent inner seal bodies 81, a seal plate 11 is disposed in the inner seal groove 9, the seal plate 11 is connected to the inner seal 8 by an elastic member 10, and the seal plate 11 is in sealing engagement with the outer periphery of the guide bearing 2. Because then connect through elastic component 10, the bottom that the closing plate 11 can be to inner seal groove 9 extrudees to the lateral wall that is close to inner seal cover 8, then install inner seal cover 8, after the installation, loosen closing plate 11, spring part 10 resets and extrudes closing plate 11 to laminating guiding bearing 2 formation sealedly, set up the installation of the inner seal cover 8 of elastic component 10 structure being convenient for, elastic component 10 can be the spring, the other end is fixed on mounting panel 11 on inner wall of inner seal cover 8 is fixed to the spring one end, can pass through welded connection.
Preferably, the closing plate 11 is the arc, and the inboard surface of arc and direction bearing 2's periphery are sealed to be cooperated, and the laminating that the realization closing plate 11 that the arc can be better and between the direction bearing 2 is sealed.
In this embodiment, be equipped with the constant head tank 12 along axial extension in the closing plate 11, set up locating plate 13 in the constant head tank 12, but locating plate 13 and constant head tank 12 sliding fit, sliding positioning plate 13, when locating plate 13 and constant head tank 12 cooperate, fix a position closing plate 11 in the position that is close to interior big envelope 8, sliding positioning plate 13, locating plate 13 loosens constant head tank 12, elastic component 10 resets, closing plate 11 seals with the laminating of guide bearing 2, before the installation locating plate 13 and constant head tank 12 cooperate, fix a position closing plate 11 in the position that is close to the inner wall of interior big envelope 8, restriction closing plate 11 moves to the inboard, be convenient for install interior big envelope 8.
In another embodiment of the present invention, a first groove 15 is provided in the air preheater 1, the sealing material layer 3 is provided in the first groove 15, and the sealing material layer 3 is in sealing engagement with the periphery of the guide bearing 2.
In another embodiment of the present invention, a second groove 16 is provided in the felt layer 4 and/or the ptfe layer 5, the inner envelope 8 is disposed in the second groove 16, and the inner envelope 8 is hermetically connected to the second groove 16, in this embodiment, the inner envelope 8 may be disposed only in the felt layer 4, the second groove 16 is provided in the felt layer 4, and the inner envelope 8 is disposed in the second groove 16; or the inner envelope 8 may be arranged only in the polytetrafluoroethylene layer 5, a second groove 16 is arranged in the polytetrafluoroethylene layer 5, and the inner envelope 8 is arranged in the second groove 16; or the inner envelope 8 can be arranged in the felt layer 4 and the polytetrafluoroethylene layer 5 at the same time, the felt layer 4 and the polytetrafluoroethylene layer 5 can be respectively provided with a second groove 16, the inner envelope 8 is arranged in the second groove 16, or the felt layer 4 and the polytetrafluoroethylene layer 5 can be respectively provided with a groove, the two grooves form a second groove 16, and the inner envelope 8 is arranged in the second groove 16.
In the utility model discloses a further embodiment, felt layer 4 and polytetrafluoroethylene layer 5 pass through threaded fastener 7 and air heater 1 fixed connection, all are equipped with screw hole 6 on felt layer 4, polytetrafluoroethylene layer 5 and the air heater 1, and accessible fastening bolt connects the three.
In the utility model, the sealing material layer 3 is embedded on the outer surface of the guide bearing 2, the guide bearing 2 is primarily protected by the sealing material layer 3, the felt layer 4 is screwed on the upper surface of the air preheater 1 and is embedded on the outer surface of the guide bearing 2, the fit clearance between the felt layer 4 and the guide bearing 2 is-6 mm, the guide bearing 2 is protected by sealing again, dust is prevented from entering the bearing box, abrasion of the guide bearing 2 is reduced, the polytetrafluoroethylene layer 5 is arranged on the upper surface of the felt layer 4 and is embedded on the outer surface of the guide bearing 2, the fit clearance between the polytetrafluoroethylene layer 5 and the guide bearing 2 is 0mm, the guide bearing 2 is protected by sealing again through the polytetrafluoroethylene layer 5, the service life of the guide bearing 2 is ensured, further, the reliability of the whole device is ensured, the inner sealing sleeve 8 is arranged inside the second groove and is embedded on the surface of the guide bearing 2, the inner envelope 8 forms a seal with the guide bearing 2 again, ensuring the use quality of the guide bearing 2.
When the oil seal structure of the air preheater guide bearing of the utility model is installed, the packing material layer 3 is arranged in the first groove of the air preheater 1, the packing material layer 3 and the surface of the guide bearing 2 form primary seal, then the polytetrafluoroethylene layer 5 is attached on the surface of the felt layer 4, the felt layer 4 and the polytetrafluoroethylene layer 5 are arranged at the end part of the air preheater 1, the fastening bolt is screwed inside the threaded hole 6 on the air preheater 1 through the threaded holes 6 on the felt layer 4 and the polytetrafluoroethylene layer 5, the polytetrafluoroethylene layer 5 and the felt layer 4 are attached together, the felt layer 4 and the polytetrafluoroethylene layer 5 and the surface of the guide bearing 2 form secondary seal, the fit clearance between the felt layer 4 and the guide bearing 2 is-6 mm, the guide bearing 2 is sealed and protected, dust is prevented from entering the bearing box, and the abrasion of the guide bearing 2 is reduced, polytetrafluoroethylene layer 5 is 0mm with guide bearing 2's fit clearance, carry out sealed protection to guide bearing 2 through polytetrafluoroethylene layer 5 again, guarantee guide bearing 2's life, and then guarantee whole equipment's reliability, accomplish felt layer 4 and polytetrafluoroethylene layer 5's installation back, set up interior big envelope 8 in the second recess and seal, and inlay the surface at guide bearing 2, fill interior packing 14 at guide bearing 2's surface and the inner wall of interior cover 8, then take off locating plate 13, spacing spring 10 resets this moment and makes the inner wall extrusion of closing plate 11 on guide bearing 2's surface, further avoid the dust to get into the bearing box in, guarantee guide bearing 2's quality of use, the equipment reliability is improved, guide bearing 2's life has been increased.
The utility model discloses what the key description in the above embodiment is different between each embodiment, and different optimization characteristics are as long as not contradictory between each embodiment, all can make up and form more preferred embodiment, consider that the literary composition is succinct, then no longer describe here.
The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (10)
1. The utility model provides an air heater direction bearing's oil blanket structure, air heater (1) with direction bearing (2) interference fit, a serial communication port, air heater (1) with be equipped with the packing material layer between direction bearing (2), just the tip of air heater (1) is equipped with felt layer (4) and polytetrafluoroethylene layer (5), just felt layer (4) with polytetrafluoroethylene layer (5) with the periphery sealing fit of direction bearing (2), felt layer (4) and/or polytetrafluoroethylene layer (5) with be equipped with interior envelope (8) between direction bearing (2), interior envelope (8) with the periphery sealing fit of direction bearing (2).
2. The oil seal structure of the air preheater guide bearing according to claim 1, wherein the inner seal cover (8) comprises a plurality of inner seal bodies (81) distributed circumferentially, and an inner filler (14) is arranged between the inner seal bodies (81) and the outer periphery of the guide bearing (2).
3. The oil seal structure of an air preheater guide bearing according to claim 2, wherein the inner packing (14) has an arc-shaped plate shape.
4. The oil seal structure of the air preheater guide bearing according to claim 2, wherein an inner seal groove (9) is formed between adjacent inner seal bodies (81), a sealing plate (11) is arranged in the inner seal groove (9), the sealing plate (11) is connected with the inner seal sleeve (8) through an elastic member (10), and the sealing plate (11) is in sealing fit with the periphery of the guide bearing (2).
5. The oil seal structure of the guide bearing of the air preheater according to claim 4, wherein the sealing plate (11) is an arc-shaped plate, and the inner side surface of the arc-shaped plate is in sealing fit with the periphery of the guide bearing (2).
6. An oil seal structure of a guide bearing of an air preheater according to claim 4, wherein the sealing plate (11) is provided with a positioning groove (12) extending along the axial direction, the positioning groove (12) is provided with a positioning plate (13), and the positioning plate (13) and the positioning groove (12) are in sliding fit.
7. The oil seal structure of the air preheater guide bearing according to claim 1, wherein a first groove (15) is formed in the air preheater (1), the packing material layer (3) is arranged in the first groove (15), and the packing material layer (3) is in sealing fit with the periphery of the guide bearing (2).
8. Oil seal structure of an air preheater guide bearing according to claim 1, characterized in that a second groove (16) is provided in the felt layer (4) and/or the polytetrafluoroethylene layer (5), and the inner envelope (8) is provided in the second groove (16).
9. The oil seal structure of an air preheater guide bearing according to claim 8, wherein the inner jacket (8) is in sealing connection with the second groove (16).
10. The oil seal structure of the air preheater guide bearing according to claim 1, wherein the felt layer (4) and the polytetrafluoroethylene layer (5) are fixedly connected with the air preheater (1) through a threaded fastener (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022156969.1U CN213512075U (en) | 2020-09-27 | 2020-09-27 | Oil seal structure of air preheater guide bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022156969.1U CN213512075U (en) | 2020-09-27 | 2020-09-27 | Oil seal structure of air preheater guide bearing |
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| Publication Number | Publication Date |
|---|---|
| CN213512075U true CN213512075U (en) | 2021-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022156969.1U Active CN213512075U (en) | 2020-09-27 | 2020-09-27 | Oil seal structure of air preheater guide bearing |
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| CN (1) | CN213512075U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114110644A (en) * | 2021-11-25 | 2022-03-01 | 淄博金通电力科技有限公司 | Heating surface rotary air preheater and sealing assembly and preparation method thereof |
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2020
- 2020-09-27 CN CN202022156969.1U patent/CN213512075U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114110644A (en) * | 2021-11-25 | 2022-03-01 | 淄博金通电力科技有限公司 | Heating surface rotary air preheater and sealing assembly and preparation method thereof |
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