CN220444052U - Sealing structure of coal mill of thermal power station - Google Patents
Sealing structure of coal mill of thermal power station Download PDFInfo
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- CN220444052U CN220444052U CN202321929137.6U CN202321929137U CN220444052U CN 220444052 U CN220444052 U CN 220444052U CN 202321929137 U CN202321929137 U CN 202321929137U CN 220444052 U CN220444052 U CN 220444052U
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- sealing
- fixedly connected
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- door frame
- power station
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- 238000007789 sealing Methods 0.000 title claims abstract description 136
- 239000003245 coal Substances 0.000 title claims abstract description 25
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000007246 mechanism Effects 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 3
- 238000002955 isolation Methods 0.000 description 11
- 238000004891 communication Methods 0.000 description 3
- 239000004071 soot Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000192 social effect Effects 0.000 description 1
Abstract
The utility model belongs to the field of sealing mechanisms, in particular to a sealing structure of a coal mill of a thermal power station, which aims at the problems that the sealing effect of a device is poor and the use requirement cannot be well met due to the fact that the sealing structure can only be sealed once in the prior art; according to the utility model, the electric push rod is started, the rectangular block drives the annular sealing gasket and the rectangular plate to transversely move, the annular sealing gasket pushes the sealing plate to transversely move, the sealing plate is extruded on one side of the door frame, the sealing performance of the device is ensured, the piston rod of the electric push rod continues to extend, the sealing strip abuts against the inner wall of the door frame, and the sealing performance of the device is improved again, so that the sealing performance is good.
Description
Technical Field
The utility model relates to the technical field of sealing mechanisms, in particular to a sealing structure of a coal mill of a thermal power station.
Background
Coal mill isolation doors are important in systems as the primary isolation equipment for coal mills and boiler systems. The isolation door must be reliably opened when the mill is in operation, must be safely isolated when the mill is in standby or service, and has certain time requirements for opening and closing the isolation door. The isolation door has high working temperature (about 350 ℃), large air duct section, large stress and high closing tightness and reliability requirements, so that the isolation door used by the domestic power station does not reach ideal working conditions, and the isolation door is a great potential safety hazard for the operation and maintenance of the coal mill of the power station.
The utility model with the bulletin number of CN202731649U discloses a hot air isolation door of a coal mill of a thermal power station, which comprises an air passage door body, a door frame, a door plate and a driving mechanism; a buffer device is arranged on the driving mechanism; the door frame and the door plate are provided with sealing devices; and a soot blowing mechanism is arranged on the inner side of the bottom edge of the door frame. The hot air isolation door of the coal mill of the thermal power station skillfully combines the soot blowing mechanism, the four-bar linkage mechanism, the buffer device and the omega-shaped hard sealing technology together, well solves the problems of untight internal leakage caused by local deformation and soot accumulation of the hot air isolation door and loose external leakage caused by door closing, and eliminates the potential safety hazard. The intelligent control device has the advantages of simple structure, convenience in operation, safety, reliability, high intelligent degree, easiness in installation, convenience in maintenance, long service life and the like. Meanwhile, the method has the characteristics of high reliability, good safety, strong practicability and the like, and can generate good economic benefit and social effect.
When the isolation door is used, the following defects still exist: only once sealing can be carried out, so that the sealing effect of the device is poor, and the use requirement cannot be well met.
Aiming at the problems, the utility model provides a sealing structure of a coal mill of a thermal power station.
Disclosure of Invention
The utility model provides a sealing structure of a coal mill of a thermal power station, which solves the defects that in the prior art, only one sealing is carried out, so that the sealing effect of a device is poor and the use requirement cannot be well met.
The utility model provides the following technical scheme:
the sealing structure of the coal mill of the thermal power station comprises an air duct door body, wherein an air inlet and an air outlet are respectively formed in two sides of the air duct door body, a door frame is fixedly connected to the inner wall of the air outlet, a sealing plate is rotatably connected to the inner wall of the top of the air duct door body, the sealing plate is positioned on one side of the door frame and matched with the door frame for use, and a first sealing assembly for sealing is arranged on one side, close to the door frame, of the sealing plate;
the other side of the sealing plate is provided with a second sealing component for sealing;
the top inner wall of the air flue door body is provided with a driving component for driving the sealing plate to rotate.
In one possible design, the first sealing component comprises two fixing strips fixedly connected to one side of the sealing plate and symmetrically arranged, a transverse strip penetrates through the fixing strips in a sliding mode, one end of the transverse strip is fixedly connected with a sealing strip, the sealing strip is matched with the door frame for use, a vertical plate is fixedly connected to the top of the transverse strip, and the same first spring is fixedly connected between the vertical plate and the fixing strip.
In one possible design, the second sealing component comprises a round rod which penetrates through the sealing plate in a sliding mode, the other end of the round rod is fixedly connected with a rectangular plate, one side of the rectangular plate is fixedly connected with an annular sealing pad, one side of the rectangular plate and one side of the sealing plate are fixedly connected with one second spring, and the second spring is sleeved on the round rod.
In one possible design, one end of the round bar is fixedly connected with an arc-shaped head, and the arc-shaped head is matched with the cross bar for use.
In one possible design, the driving assembly comprises a mounting seat fixedly connected to the bottom of the air duct door body, one side of the mounting seat is rotationally connected with an electric push rod, one side of the rectangular plate is fixedly connected with two rectangular blocks symmetrically arranged, the two rectangular blocks are rotationally connected with the same rotating shaft, a cylinder is fixedly sleeved on the outer wall of the rotating shaft, and a piston rod of the electric push rod is fixedly connected with the outer wall of the cylinder.
In one possible design, a triangular block is fixedly connected to the inner wall of the bottom of the air channel door body, and the triangular block is located on one side of the door frame.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the utility model as claimed.
When the device is used, the electric push rod is started, the piston rod of the electric push rod drives the cylinder to transversely move, the cylinder drives the rotating shaft to transversely move, the rotating shaft drives the rectangular block to transversely move, the rectangular block drives the annular sealing gasket and the rectangular plate to transversely move, the annular sealing gasket drives the sealing plate to transversely move, and at the moment, the sealing plate is extruded on one side of the door frame, so that the sealing performance of the device is ensured;
according to the utility model, at the moment, the piston rod of the electric push rod continues to extend to push the rectangular plate to move transversely, the rectangular plate extrudes the annular sealing gasket to improve the sealing performance of the device again, meanwhile, the rectangular plate drives the round rod to move transversely and extrude the second spring, the round rod drives the arc-shaped head to move transversely, the arc-shaped head pushes the two cross bars to move away from each other, the two cross bars drive the two sealing strips to move away from each other, the sealing strips abut against the inner wall of the door frame, the sealing performance of the device is improved again, the sealing performance is good, and the use is convenient;
according to the utility model, the electric push rod is started, the rectangular block drives the annular sealing gasket and the rectangular plate to transversely move, the annular sealing gasket pushes the sealing plate to transversely move, the sealing plate is extruded on one side of the door frame at the moment, the sealing performance of the device is guaranteed, the piston rod of the electric push rod continues to extend, the arc-shaped head pushes the two cross bars to be away from each other, the two cross bars drive the two sealing strips to be away from each other, the sealing strips abut against the inner wall of the door frame, the sealing performance of the device is improved again, the sealing performance is good, and the use is convenient.
Drawings
FIG. 1 is a schematic three-dimensional structure of a sealing structure of a coal pulverizer in a thermal power station according to an embodiment of the present utility model;
fig. 2 is a schematic diagram of a front cross-sectional structure of a sealing structure of a coal mill in a thermal power station according to an embodiment of the present utility model;
fig. 3 is a schematic three-dimensional structure diagram of a cylinder and a rotating shaft in a sealing structure of a coal mill in a thermal power station according to an embodiment of the present utility model;
fig. 4 is a schematic structural view of a cross bar in a sealing structure of a coal mill in a thermal power station according to an embodiment of the present utility model;
fig. 5 is an exploded schematic view of a rectangular plate and a sealing plate in a sealing structure of a coal mill in a thermal power station according to an embodiment of the present utility model.
Reference numerals:
1. an air channel door body; 2. a door frame; 3. a sealing plate; 4. a cross bar; 5. a sealing strip; 6. an air inlet; 7. a mounting base; 8. an electric push rod; 9. an annular gasket; 10. a rectangular plate; 11. triangular blocks; 12. rectangular blocks; 13. a cylinder; 14. a rotating shaft; 15. a fixing strip; 16. a riser; 17. a first spring; 18. a second spring; 19. a round bar; 20. an arc-shaped head; 21. and an air outlet.
Detailed Description
Embodiments of the present utility model will be described below with reference to the accompanying drawings in the embodiments of the present utility model.
In describing embodiments of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled" and "mounted" should be interpreted broadly, and for example, "coupled" may or may not be detachably coupled; may be directly connected or indirectly connected through an intermediate medium. In addition, "communication" may be direct communication or may be indirect communication through an intermediary. Wherein, "fixed" means that the relative positional relationship is not changed after being connected to each other. References to orientation terms, such as "inner", "outer", "top", "bottom", etc., in the embodiments of the present utility model are merely to refer to the orientation of the drawings and, therefore, the use of orientation terms is intended to better and more clearly illustrate and understand the embodiments of the present utility model, rather than to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the embodiments of the present utility model.
Example 1
Referring to fig. 1-5, a sealing structure comprises an air channel door body 1, wherein an air inlet 6 and an air outlet 21 are respectively formed in two sides of the air channel door body 1, a door frame 2 is fixedly connected to the inner wall of the air outlet 21, a sealing plate 3 is rotatably connected to the inner wall of the top of the air channel door body 1, the sealing plate 3 is positioned on one side of the door frame 2 and matched with the door frame 2 for use, and a first sealing component for sealing is arranged on one side, close to the door frame 2, of the sealing plate 3;
the other side of the sealing plate 3 is provided with a second sealing component for sealing;
the top inner wall of the air channel door body 1 is provided with a driving component for driving the sealing plate 3 to rotate.
The application can be used for the coal pulverizer of thermal power station, also can be used for being applicable to other fields of this application.
Example 2
Referring to fig. 1-5, a sealing structure of a coal mill in a thermal power station comprises an air duct door body 1, wherein an air inlet 6 and an air outlet 21 are respectively formed in two sides of the air duct door body 1, the inner wall of the air outlet 21 is fixedly connected with a door frame 2, the bottom inner wall of the air duct door body 1 is fixedly connected with a triangular block 11, the triangular block 11 is positioned on one side of the door frame 2, the top inner wall of the air duct door body 1 is rotationally connected with a sealing plate 3, the sealing plate 3 is positioned on one side of the door frame 2 and matched with the door frame 2, one side of the sealing plate 3, close to the door frame 2, is provided with a first sealing assembly for sealing, the first sealing assembly comprises two symmetrically arranged fixing strips 15 fixedly connected on one side of the sealing plate 3, a transverse strip 4 penetrates through the inner part of the fixing strips 15 in a sliding manner, one end of the transverse strip 4 is fixedly connected with a sealing strip 5, the sealing strip 5 is matched with the door frame 2 for use, the top of the transverse strip 4 is fixedly connected with a vertical plate 16, the same first spring 17 is fixedly connected between the vertical plate 16 and the fixing strips 15, the two transverse strips 4 are pushed away from each other, the two transverse strips 4 drive the two sealing strips 5 to be mutually far away from each other, the inner wall 5 is mutually far away from each other, and tightly abuts against the inner wall of the door frame 2, and sealing strip 2 is convenient to use;
the other side of the sealing plate 3 is provided with a second sealing component for sealing, the second sealing component comprises a round rod 19 which penetrates through the sealing plate 3 in a sliding manner, the other end of the round rod 19 is fixedly connected with a rectangular plate 10, one side of the rectangular plate 10 is fixedly connected with an annular sealing gasket 9, one side of the rectangular plate 10 and one side of the sealing plate 3 are fixedly connected with the same second spring 18, the second spring 18 is sleeved on the round rod 19, one end of the round rod 19 is fixedly connected with an arc-shaped head 20, the arc-shaped head 20 is matched with the transverse bar 4 for use, at the moment, a piston rod of the electric push rod 8 continues to stretch out to push the rectangular plate 10 to move transversely, the rectangular plate 10 extrudes the annular sealing gasket 9 to improve the sealing performance of the device again, meanwhile, the rectangular plate 10 drives the round rod 19 to move transversely and extrudes the second spring 18, and the round rod 19 drives the arc-shaped head 20 to move transversely;
the inner wall at the top of the air flue door body 1 is provided with a driving component for driving the sealing plate 3 to rotate, the driving component comprises a mounting seat 7 fixedly connected to the bottom of the air flue door body 1, one side of the mounting seat 7 is rotationally connected with an electric push rod 8, one side of a rectangular plate 10 is fixedly connected with two rectangular blocks 12 symmetrically arranged, the same rotating shaft 14 is rotationally connected between the two rectangular blocks 12, a cylinder 13 is fixedly sleeved on the outer wall of the rotating shaft 14, a piston rod of the electric push rod 8 is fixedly connected with the outer wall of the cylinder 13, the electric push rod 8 is started, the piston rod of the electric push rod 8 drives the cylinder 13 to transversely move, the cylinder 13 pushes the rotating shaft 14 to transversely move, the rotating shaft 14 drives the rectangular blocks 12 to transversely move, the rectangular blocks 12 drive an annular sealing pad 9 and the rectangular plate 10 to transversely move, the annular sealing pad 9 pushes the sealing plate 3 to transversely move, the sealing plate 3 is extruded on one side of the door frame 2, and sealing performance of the device is guaranteed.
However, as well known to those skilled in the art, the working principle and the wiring method of the electric putter 8 are common, and they are all conventional means or common knowledge, and are not described herein in detail, and any choice can be made by those skilled in the art according to their needs or convenience.
The working principle and the using flow of the technical scheme are as follows:
when the device is used, the electric push rod 8 is started, a piston rod of the electric push rod 8 drives the cylinder 13 to transversely move, the cylinder 13 drives the rotating shaft 14 to transversely move, the rotating shaft 14 drives the rectangular block 12 to transversely move, the rectangular block 12 drives the annular sealing gasket 9 and the rectangular plate 10 to transversely move, the annular sealing gasket 9 drives the sealing plate 3 to transversely move, and at the moment, the sealing plate 3 is extruded on one side of the door frame 2, so that the sealing performance of the device is ensured;
at this moment, the piston rod of the electric push rod 8 continues to stretch out to push the rectangular plate 10 to move transversely, the rectangular plate 10 extrudes the annular sealing gasket 9 to improve the sealing performance of the device again, meanwhile, the rectangular plate 10 drives the round rod 19 to move transversely and extrudes the second spring 18, the round rod 19 drives the arc-shaped head 20 to move transversely, the arc-shaped head 20 pushes the two transverse strips 4 to move away from each other, the two transverse strips 4 drive the two sealing strips 5 to move away from each other, the sealing strips 5 abut against the inner wall of the door frame 2, the sealing performance of the device is improved again, the sealing performance is good, and the use is convenient.
The present utility model is not limited to the above embodiments, and any person skilled in the art can easily think about the changes or substitutions within the technical scope of the present utility model, and the changes or substitutions are intended to be covered by the scope of the present utility model; embodiments of the utility model and features of the embodiments may be combined with each other without conflict. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.
Claims (6)
1. Sealing structure of coal pulverizer of thermal power station, its characterized in that includes:
the air channel door body (1), air inlet (6) and air outlet (21) have been seted up respectively to the both sides of air channel door body (1), the inner wall fixedly connected with door frame (2) of air outlet (21), the top inner wall of air channel door body (1) rotates and is connected with closing plate (3), closing plate (3) are located one side of door frame (2) and cooperate with door frame (2) and use, one side that closing plate (3) are close to door frame (2) is provided with the first seal assembly that is used for carrying out the seal;
a second sealing component for sealing is arranged on the other side of the sealing plate (3);
the inner wall of the top of the air channel door body (1) is provided with a driving component for driving the sealing plate (3) to rotate.
2. The sealing structure of a coal mill in a thermal power station according to claim 1, wherein the first sealing assembly comprises two fixing strips (15) fixedly connected to one side of the sealing plate (3) and symmetrically arranged, a cross strip (4) is penetrated through the fixing strips (15) in a sliding manner, one end of each cross strip (4) is fixedly connected with a sealing strip (5), the sealing strips (5) are matched with the door frame (2), a vertical plate (16) is fixedly connected to the top of each cross strip (4), and the same first spring (17) is fixedly connected between the vertical plate (16) and the fixing strip (15).
3. The sealing structure of the coal mill of the thermal power station according to claim 1, characterized in that the second sealing assembly comprises a round rod (19) penetrating through the sealing plate (3) in a sliding mode, the other end of the round rod (19) is fixedly connected with a rectangular plate (10), one side of the rectangular plate (10) is fixedly connected with an annular sealing pad (9), one side of the rectangular plate (10) and one side of the sealing plate (3) are fixedly connected with the same second spring (18), and the second spring (18) is sleeved on the round rod (19).
4. A sealing structure of a coal mill for a thermal power station according to claim 3, wherein one end of the round rod (19) is fixedly connected with an arc head (20), and the arc head (20) is matched with the cross bar (4).
5. A sealing structure of a coal mill in a thermal power station according to claim 3, characterized in that the driving assembly comprises a mounting seat (7) fixedly connected to the bottom of the air channel door body (1), one side of the mounting seat (7) is rotationally connected with an electric push rod (8), one side of the rectangular plate (10) is fixedly connected with two rectangular blocks (12) symmetrically arranged, two rectangular blocks (12) are rotationally connected with the same rotating shaft (14), a cylinder (13) is fixedly sleeved on the outer wall of the rotating shaft (14), and a piston rod of the electric push rod (8) is fixedly connected with the outer wall of the cylinder (13).
6. The sealing structure of the coal mill of the thermal power station according to claim 1, wherein a triangular block (11) is fixedly connected to the inner wall of the bottom of the air channel door body (1), and the triangular block (11) is located on one side of the door frame (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321929137.6U CN220444052U (en) | 2023-07-21 | 2023-07-21 | Sealing structure of coal mill of thermal power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321929137.6U CN220444052U (en) | 2023-07-21 | 2023-07-21 | Sealing structure of coal mill of thermal power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220444052U true CN220444052U (en) | 2024-02-06 |
Family
ID=89724150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321929137.6U Active CN220444052U (en) | 2023-07-21 | 2023-07-21 | Sealing structure of coal mill of thermal power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220444052U (en) |
-
2023
- 2023-07-21 CN CN202321929137.6U patent/CN220444052U/en active Active
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