CN209943511U - Novel coal pulverizer developments combination formula packing structure - Google Patents
Novel coal pulverizer developments combination formula packing structure Download PDFInfo
- Publication number
- CN209943511U CN209943511U CN201920480595.3U CN201920480595U CN209943511U CN 209943511 U CN209943511 U CN 209943511U CN 201920480595 U CN201920480595 U CN 201920480595U CN 209943511 U CN209943511 U CN 209943511U
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- China
- Prior art keywords
- sealing
- packing
- box
- sealing box
- tooth seal
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- Expired - Fee Related
Links
- 238000012856 packing Methods 0.000 title claims abstract description 77
- 239000003245 coal Substances 0.000 title claims abstract description 21
- 238000011161 development Methods 0.000 title claims description 4
- 230000018109 developmental process Effects 0.000 title claims description 4
- 238000007789 sealing Methods 0.000 claims abstract description 104
- 210000004907 gland Anatomy 0.000 claims abstract description 20
- 239000000945 filler Substances 0.000 claims abstract description 6
- 230000004323 axial length Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000006837 decompression Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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- Sealing Devices (AREA)
Abstract
The utility model discloses a novel dynamic combined packing sealing structure of a coal mill, which comprises a large shaft, wherein the surface of the large shaft is rotationally connected with the sealing structure, and the sealing structure comprises a packing sealing box, a labyrinth tooth seal structure, a sealing packing, a packing pressure and a sealing flange; the inner wall of the packing sealing box is provided with a groove matched with the labyrinth tooth seal structure, and the labyrinth tooth seal structure is embedded on the inner wall of the packing sealing box; the packing gland is matched with the packing sealing box and movably inserted at one side of the packing sealing box; the sealing filler is positioned at the pressure-benefit matching position of the filler sealing box and the filler and is rotationally connected with the large shaft; the surface of the packing sealing box is in threaded connection with a sealing flange. The structure can effectively eliminate the original gap sealing, furthest reduce the leakage of sealing wind, is convenient to use, has simple maintenance procedures, is installed in place, does not need to dismantle the sealing stuffing box device for later maintenance, and only needs to replace the sealing stuffing.
Description
Technical Field
The utility model relates to a coal pulverizer specifically is a novel coal pulverizer developments combination formula packing structure.
Background
In the existing coal mill (mainly referred to as a Shanghai heavy machinery plant HP1063 type coal mill), the sealing of a main shaft of an original speed reducer and the transmission of the coal mill is in clearance fit sealing, namely, the sealing effect is achieved by adjusting the clearance between a sealing plate and a transmission shaft through three layers of sealing plates.
However, due to the unreasonable design of the original structure for achieving sealing by clearance fit, a large leakage gap is bound to exist, so that a large amount of sealing wind of about 10Kpa leaks to the outside through the large fit gap, the sealing wind effect is poor, the noise is very harsh (up to 106 decibels are detected by a sound level meter), and peripheral equipment is polluted.
SUMMERY OF THE UTILITY MODEL
From the above, it can be seen that the equipment (mainly referred to as the coal mill model HP1063 of the shanghai heavy machinery plant) has the following disadvantages:
1. the leakage problem of a large amount of sealing air is solved at a large shaft for driving a speed reducer of the coal mill and the coal mill.
2. After the sealing air leaks, the sealing air pressure is reduced, and the service life of equipment needing sealing air protection is shortened.
3. The problem of pollution of the surrounding environment, namely the problem of much dust deposition nearby.
4. The most important thing is to solve the problem of high decibel noise which is very harsh on site, and the value of the environmental noise is up to 106 decibels through site detection.
5. The original sealing plate adjusting process for multiple times is complicated, the labor force is large, and the sealing plate can be adjusted by 5 persons.
In order to solve the above problems, the technical scheme provided by the utility model is as follows: a novel dynamic combined packing sealing structure of a coal mill comprises a large shaft, wherein the surface of the large shaft is rotationally connected with the sealing structure, and the sealing structure comprises a packing sealing box, a labyrinth tooth seal structure, sealing packing, a packing gland and a sealing flange;
the inner wall of the packing sealing box is provided with a groove matched with the labyrinth tooth seal structure, and the labyrinth tooth seal structure is embedded on the inner wall of the packing sealing box;
the packing gland is matched with the packing sealing box and movably inserted at one side of the packing sealing box;
the sealing packing is positioned at the matching position of the packing sealing box and the packing gland and is rotationally connected with the large shaft;
the surface of the packing sealing box is in threaded connection with a sealing flange.
As an improvement, the labyrinth tooth seal structure has at least one layer.
As an improvement, the axial length of the sealing packing is limited by matching a packing sealing box and a packing gland mutually, and the packing sealing box and the packing gland are fixed in relative positions through bolts.
As an improvement, the sealing filler has at least one layer.
The technical advantages provided by the utility model are as follows:
1. effectively eliminates the original clearance sealing and reduces the leakage of sealing wind to the maximum extent.
2. The sealing wind pressure is increased by 1.0-3.0Kpa, and the service life of the sealing spare parts of the coal mill is greatly prolonged.
3. The noise value of the site environment is reduced from 106dB (A) to 80dB (A), the working environment of site inspection and overhaul personnel is greatly improved, and the human-oriented enterprise concept is embodied.
4. The sealing wind does not leak, the environmental sanitation around the equipment is controlled, and the sanitation level is greatly improved.
5. The novel sealing stuffing box is simple in structure, convenient to use and simple in maintenance process, after the sealing stuffing box is installed in place, the sealing stuffing box device does not need to be detached for later maintenance, and the work can be completed by 2-3 people only by replacing the sealing stuffing, so that the maintenance cost of manpower and spare parts is greatly reduced.
Drawings
FIG. 1 is a schematic view of the structure principle of the present invention;
as shown in the figure: 1. stuffing a sealing box; 3. sealing the flange; 4. a bolt; 6. a packing gland; 8. sealing and filling; 10. a labyrinth tooth seal structure; 11. large shaft
Detailed Description
The present invention will be further illustrated with reference to the accompanying drawings.
The novel dynamic combined packing sealing structure of the coal mill comprises a large shaft 11, wherein the surface of the large shaft 11 is rotatably connected with the sealing structure, and the sealing structure comprises a packing sealing box 1, a labyrinth tooth seal structure 10, a sealing packing 8, a packing gland 6 and a sealing flange 3;
the inner wall of the packing sealing box 1 is provided with a groove matched with the labyrinth tooth seal structure 10, and the labyrinth tooth seal structure 10 is embedded on the inner wall of the packing sealing box 1;
the packing gland 6 is matched with the packing sealing box 1 and movably inserted at one side of the packing sealing box 1;
the sealing packing 8 is positioned at the matching position of the packing sealing box 1 and the packing gland 6 and is rotationally connected with the large shaft 11;
the surface of the stuffing sealing box 1 is connected with a sealing flange 3 in a threaded manner.
As a modification, the labyrinth seal structure 10 has three layers.
As a modification, the axial length of the seal packing 8 is limited by matching the packing gland 6 with the packing gland 1, and the relative positions of the packing gland 6 and the packing gland 1 are fixed by bolts.
As a refinement, the sealing filler 8 has three layers.
The explanation is made here, the original structure of the gap seal between the original speed reducer and the coal mill transmission main shaft 11 is changed, the novel dynamic combined packing sealing structure of the coal mill is redesigned, the fixing bolt holes of the dynamic sealing plate are designed by using the original structure, and the combined packing sealing box 1 is fixed at the lower part of the coal mill, namely the sealing position of the main shaft 11.
The dynamic combined type packing sealing box 1 is of a four-section combined structure, and each section of packing sealing box 1 is connected through a pair of sealing flanges 3 and two sets of bolts 4 to form a set of complete structure. Inside the stuffing seal box 1, the upper portion that is close to with the main shaft 11 is designed with fixed three-layer labyrinth tooth seal structure 10, reaches the decompression effect step by step, designs multilayer seal packing 8 and paints high temperature resistant lubricating grease in stuffing seal box 1 one side, and these seal packing 8 are through the effect of compressing tightly of four sections gland 6, with multilayer seal packing 8 and the direct in close contact with of pivoted main shaft 11, play totally enclosed effect.
The present invention and the embodiments thereof have been described above, but the description is not limited thereto, and the embodiment shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should understand that they can devise similar structural modes and embodiments without departing from the spirit of the present invention, and shall fall within the scope of the present invention.
Claims (4)
1. The utility model provides a novel coal pulverizer developments combination formula packing structure, includes the macroaxis, its characterized in that: the surface of the large shaft is rotatably connected with a sealing structure, and the sealing structure comprises a packing sealing box, a labyrinth tooth seal structure, sealing packing, a packing gland and a sealing flange;
the inner wall of the packing sealing box is provided with a groove matched with the labyrinth tooth seal structure, and the labyrinth tooth seal structure is embedded on the inner wall of the packing sealing box;
the packing gland is matched with the packing sealing box and movably inserted at one side of the packing sealing box;
the sealing packing is positioned at the matching position of the packing sealing box and the packing gland and is rotationally connected with the large shaft;
the surface of the packing sealing box is in threaded connection with a sealing flange.
2. The novel dynamic combined packing sealing structure of the coal mill as claimed in claim 1, wherein: the labyrinth tooth seal structure comprises at least one layer.
3. The novel dynamic combined packing sealing structure of the coal mill as claimed in claim 1, wherein: the axial length of the sealing packing is limited by the mutual matching of a packing sealing box and a packing gland, and the relative positions of the packing sealing box and the packing gland are fixed through bolts.
4. The novel dynamic combined packing sealing structure of the coal mill as claimed in claim 1, wherein: the sealing filler comprises at least one layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920480595.3U CN209943511U (en) | 2019-04-04 | 2019-04-04 | Novel coal pulverizer developments combination formula packing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920480595.3U CN209943511U (en) | 2019-04-04 | 2019-04-04 | Novel coal pulverizer developments combination formula packing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209943511U true CN209943511U (en) | 2020-01-14 |
Family
ID=69127289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920480595.3U Expired - Fee Related CN209943511U (en) | 2019-04-04 | 2019-04-04 | Novel coal pulverizer developments combination formula packing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209943511U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109944944A (en) * | 2019-04-04 | 2019-06-28 | 华能国际电力股份有限公司营口电厂 | A kind of box-like packing seal structure of novel coal mill dynamic group |
-
2019
- 2019-04-04 CN CN201920480595.3U patent/CN209943511U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109944944A (en) * | 2019-04-04 | 2019-06-28 | 华能国际电力股份有限公司营口电厂 | A kind of box-like packing seal structure of novel coal mill dynamic group |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200114 |
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| CF01 | Termination of patent right due to non-payment of annual fee |