CN117628189A - Labyrinth sealing device - Google Patents
Labyrinth sealing device Download PDFInfo
- Publication number
- CN117628189A CN117628189A CN202311484603.9A CN202311484603A CN117628189A CN 117628189 A CN117628189 A CN 117628189A CN 202311484603 A CN202311484603 A CN 202311484603A CN 117628189 A CN117628189 A CN 117628189A
- Authority
- CN
- China
- Prior art keywords
- labyrinth
- frame
- flange
- dropping pipe
- coal
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 47
- 239000003245 coal Substances 0.000 claims abstract description 104
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 238000012423 maintenance Methods 0.000 abstract description 15
- 238000003466 welding Methods 0.000 abstract description 7
- 230000003068 static effect Effects 0.000 description 10
- 239000000843 powder Substances 0.000 description 6
- 238000009434 installation Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
-
- 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
- F16J15/44—Free-space packings
- F16J15/447—Labyrinth packings
-
- 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
- F16J15/44—Free-space packings
- F16J15/447—Labyrinth packings
- F16J15/4476—Labyrinth packings with radial path
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Food Science & Technology (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The invention discloses a labyrinth sealing device, which comprises: an upper coal dropping pipe, a coal dropping pipe supporting frame, a labyrinth frame and a lower coal dropping pipe; the end parts of the labyrinth frame, which are close to the large belt wheel, are provided with comb-shaped structures which are mutually inserted to form a labyrinth sealing structure; the coal dropping pipe is detachably connected with one end of the large belt wheel, which is close to the coal dropping pipe; the outer wall of the bearing seat is convexly provided with a first flange; a plurality of first connecting bolts are circumferentially arranged on one side, facing the coal dropping pipe support frame, of the first flange, and the coal dropping pipe support frame is detachably connected with the first flange through the first connecting bolts; a plurality of second connecting bolts are circumferentially arranged on one side, facing the labyrinth frame, of the first flange, and the labyrinth frame is detachably connected with the first flange through the second connecting bolts. Compared with the traditional welding mode, the detachable connection between the coal dropping pipe and the labyrinth frame not only reduces the operation and maintenance workload of clients and shortens the engineering shutdown maintenance time, but also effectively improves the equipment operation rate.
Description
Technical Field
The invention relates to the technical field of dynamic and static equipment sealing, in particular to a labyrinth sealing device.
Background
The coal mill is a machine for crushing and grinding coal blocks into coal powder, and is an important auxiliary device of a coal powder furnace. The dynamic separator powder selecting device matched with the HP series medium-speed coal mill adopts a sealing mode that a mechanical labyrinth and sealing wind (compressed air) are combined in a sealing structure between dynamic equipment and static equipment; the labyrinth seal has the greatest advantages that: after the sealing structure is adjusted in place once, no vulnerable part is replaced.
In the prior art, static equipment of a powder selecting device of a dynamic separator of a coal mill is provided with a labyrinth groove, the labyrinth groove is also used for supporting a coal dropping pipe below, the coal dropping pipe below is directly welded with the static equipment, meanwhile, the static equipment is connected with the coal dropping pipe above by adopting a fastening piece, the coal dropping pipe is arranged in a central arrangement manner, and the movable equipment comprises a driving belt. The labyrinth gap between the static equipment and the dynamic equipment is in the millimeter level, and the labyrinth gap is usually controlled within 1 millimeter to achieve the sealing effect.
In the above scheme, because the coal dropping pipe is connected with the static equipment in a welding way, the following problems exist in the practical application process: when the transmission belt is replaced in later operation and maintenance, joints at the coal dropping pipe and the static equipment are required to be cut, the secondary welding is required after the replacement is finished, and the operation and maintenance can be greatly inconvenient due to repeated cutting and welding.
Disclosure of Invention
The labyrinth sealing device provided by the invention reduces the workload of operation and maintenance of clients, shortens the engineering shutdown maintenance time, and effectively improves the equipment operation rate.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the present invention provides a labyrinth seal device, comprising:
an upper coal dropping pipe, a coal dropping pipe supporting frame, a labyrinth frame and a lower coal dropping pipe which are coaxially communicated in sequence;
the outside of the coal dropping pipe is coaxially sleeved with a large belt wheel and a bearing seat, the large belt wheel is positioned between the bearing seat and the labyrinth frame, and the large belt wheel is fixedly connected with the end part of the bearing seat;
the end parts of the labyrinth frame, which are close to the large belt wheel, are provided with comb-shaped structures which are mutually inserted to form a labyrinth sealing structure;
the coal dropping pipe is detachably connected with one end of the large belt wheel, which is close to the coal dropping pipe;
the outer wall of the bearing seat is convexly provided with a first flange;
a plurality of first connecting bolts are circumferentially arranged on one side, facing the coal dropping pipe support frame, of the first flange, and the coal dropping pipe support frame is detachably connected with the first flange through the first connecting bolts;
the first flange is provided with a plurality of second connecting bolts towards one side circumference of the labyrinth frame, and the labyrinth frame is detachably connected with the first flange through the second connecting bolts.
In one possible implementation manner, the first connecting bolts are three connecting bolts which are circumferentially and uniformly arranged on the first flange;
the second connecting bolts are circumferentially and uniformly arranged on the first flange.
In one possible implementation, the first connection bolts and the second connection bolts are uniformly staggered.
In one possible implementation manner, the first connecting bolt and the second connecting stud each include a positioning step cylindrical section and a threaded section, one end of the positioning step cylindrical section is connected with the first flange, and the other end is connected with the threaded section.
In one possible implementation manner, a first mounting hole matched with the first connecting bolt is circumferentially formed in the coal drop pipe supporting frame, and a first nut is arranged at one end of the first connecting bolt penetrating out of the first mounting hole;
the labyrinth frame is circumferentially provided with a second mounting hole matched with the second connecting bolt, and one end of the second connecting bolt penetrating out of the second mounting hole is provided with a second nut.
In one possible implementation, a sealing ring is arranged between the coal drop pipe support frame and the labyrinth frame.
In one possible implementation manner, a sealing groove is formed in one side, close to the coal dropping pipe supporting frame, of the labyrinth frame, and the sealing ring is arranged in the sealing groove.
In one possible implementation, the labyrinth frame side wall is provided with a plurality of air ports in the circumferential direction.
When the labyrinth sealing device provided by the embodiment of the invention is actually installed, firstly, one end of an upper coal dropping pipe, which is close to a lower coal dropping pipe, is detachably connected with a coal dropping pipe supporting frame; secondly, detachably connecting one end of a coal dropping pipe close to the upper coal dropping pipe with one end of a large belt wheel close to the upper coal dropping pipe; then, a labyrinth frame is arranged between the coal drop pipe supporting frame and the large belt wheel, so that the end parts of the labyrinth frame, which are close to each other, of the large belt wheel are mutually inserted to form a labyrinth structure; finally, the coal drop pipe support frame is detachably connected with the first flange of the outer wall of the bearing seat through a first connecting bolt, and the labyrinth frame is detachably connected with the first flange of the outer wall of the bearing seat through a second connecting bolt, so that labyrinth sealing connection of the upper coal drop pipe and the lower coal drop pipe is realized; the invention has simple structure and convenient installation.
According to the labyrinth sealing device provided by the embodiment of the invention, before the bearing is required to be maintained, the connection between the coal dropping pipe support frame and the first flange of the bearing seat is disconnected through the first connecting bolt, the connection between the labyrinth frame and the first flange of the bearing seat is disconnected through the second connecting bolt, and the connection between the coal dropping pipe and the large belt wheel is realized, so that the coal dropping pipe can be loosened, and the labyrinth sealing device is convenient to detach and install, thereby not only reducing the workload of operation and maintenance of customers, shortening the engineering shutdown maintenance time, but also effectively improving the equipment operation rate.
Drawings
FIG. 1 is a cross-sectional view of an overall construction of a labyrinth seal provided in an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of the structure of FIG. 1;
fig. 3 is an exploded view of a labyrinth seal according to an embodiment of the present invention.
Reference numerals and description:
11. a coal dropping pipe is arranged on the upper part; 12. a coal dropping pipe supporting frame; 121. a first mounting hole; 13. a labyrinth frame; 131. a second mounting hole; 132. sealing grooves; 133. an air port; 14. a coal dropping pipe; 15. a large belt wheel; 16. a bearing seat; 17. a first flange; 18. a first connecting bolt; 19. a second connecting bolt; 20. a first nut; 21. a second nut; 23. a seal ring; 24. a motor; 25. a belt.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. 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.
The terms "first" and "second" are used below for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present disclosure, unless otherwise indicated, the meaning of "a plurality" is two or more. In addition, the use of "based on" or "according to" is intended to be open and inclusive in that a process, step, calculation, or other action "based on" or "according to" one or more of the stated conditions or values may in practice be based on additional conditions or beyond the stated values.
In the prior art, a driving motor drives a large belt wheel to rotate through a driving belt wheel, the bottom of the large belt wheel is connected with a driving system of powder selecting equipment, a labyrinth groove is formed in the top of the large belt wheel, namely the large belt wheel is dynamic equipment, and a supporting frame matched with the large belt wheel is static equipment. The support frame circumference evenly distributed has 12 double-screw bolts, realizes being connected between support frame and the bearing frame through the double-screw bolt, and adjusting nut highly in order to adjust the maze clearance on the bearing frame, welds whereabouts coal pipe and support frame inner wall together at last, and the whereabouts coal pipe passes through the mounting and can dismantle with the support frame top and be connected, and whereabouts coal pipe bottom evenly welds has three bracing piece, and the other end of bracing piece welds with the barrel inner wall of the dynamic separator selection powder device of coal pulverizer. In this scheme, once the welding is accomplished to the coal breakage pipe, the clearance of labyrinth department just can't be adjusted any more, and in case the welding appears stress deformation or go up the coal breakage pipe and receive external force to force centering correction, then arouse very easily that labyrinth department clearance is disordered, leads to moving equipment and quiet equipment labyrinth department to appear mechanical metal face and scratch or transmission equipment directly to be blocked, and the clearance of labyrinth department can't be adjusted again this moment.
In addition, the engineering site needs to be overhauled and maintained, in the prior art, the sealing structure needs to be disassembled firstly, then the gaps at the labyrinth are readjusted and welded, so that great inconvenience is brought to operation and maintenance due to repeated cutting and welding, and great challenges are brought to operators due to limited operation space.
As shown in figures 1-3, in order to reduce the workload of customer operation and maintenance, shorten the engineering shutdown and maintenance time and effectively improve the equipment operation rate, the embodiment of the invention provides a labyrinth sealing device.
The labyrinth sealing device provided by the embodiment of the invention comprises an upper coal dropping pipe 11, a coal dropping pipe supporting frame 12, a labyrinth frame 13 and a lower coal dropping pipe 14 which are coaxially communicated in sequence.
Wherein, the upper coal drop pipe 11 is detachably connected with the coal drop pipe supporting frame 12 through bolts.
In this embodiment, the bottom of the upper coal drop pipe 11 is provided with a connecting flange, the connecting flange is circumferentially and uniformly provided with a first connecting hole, a second connecting hole is provided on the coal drop pipe support frame 12 in matching with the first connecting hole, and the first connecting hole and the second connecting hole are opposite to each other, so that the detachable connection of the upper coal drop pipe 11 and the coal drop pipe support frame 12 is realized through bolts.
The outside of the coal dropping pipe 14 is coaxially sleeved with a large belt pulley 15 and a bearing seat 16, the large belt pulley 15 is positioned between the bearing seat 16 and the labyrinth frame 13, and the large belt pulley 15 is fixedly connected with the end part of the bearing seat 16.
In this embodiment, the large pulley 15 and the bearing seat 16 are only sleeved outside the coal drop pipe 14, and the coal drop pipe 14 can still slide up and down.
The large pulley 15 is a large pulley.
In this embodiment, the motor 24 is a variable frequency motor, a speed reducer is provided on an output shaft of the motor 24, a small belt pulley is coaxially provided on an output shaft of the speed reducer, and the large belt pulley 15 is connected with the small belt pulley through a belt 25, so that the large belt pulley 15 is driven to rotate by the motor 24.
The end of the labyrinth frame 13, which is close to the large belt wheel 15, is provided with comb-shaped structures which are inserted into each other to form a labyrinth seal structure.
The coal dropping pipe 14 is detachably connected with one end of the large belt wheel 15, which is close to the coal dropping pipe 11.
Specifically, the gap size at the labyrinth seal can be adjusted by adjusting the distance between the labyrinth frame 13 and the large pulley 15.
In this embodiment, the top of the coal drop pipe 14 is provided with a second flange, a plurality of first fixing holes are uniformly arranged on the second flange in the axial direction, a plurality of second fixing holes are arranged on the top of the large belt wheel 15 in a matching manner with the first fixing holes, and the first fixing holes and the second fixing holes are opposite to each other, so that the coal drop pipe 14 and the large belt wheel 15 can be detachably connected through screws or bolts. In particular, the screws or bolts are assembled from top to bottom.
The outer wall of the bearing seat 16 is convexly provided with a first flange 17.
In this embodiment, the first flange 17 and the bearing seat 16 may be integrally formed, or may be welded or bolted.
A plurality of first connecting bolts 18 are circumferentially arranged on one side, facing the coal chute support frame 12, of the first flange 17, and the coal chute support frame 12 and the first flange 17 are detachably connected through the first connecting bolts 18;
a plurality of second connecting bolts 19 are circumferentially arranged on one side of the first flange 17 facing the labyrinth frame 13, and the labyrinth frame 13 is detachably connected with the first flange 17 through the second connecting bolts 19.
When the labyrinth sealing device provided by the embodiment of the invention is actually installed, firstly, one end of the upper coal dropping pipe 11, which is close to the lower coal dropping pipe 14, is detachably connected with the coal dropping pipe supporting frame 12; secondly, one end of the coal dropping pipe 14 close to the coal dropping pipe 11 is detachably connected with one end of the large belt wheel 15 close to the coal dropping pipe 11; then, a labyrinth frame 13 is arranged between the coal drop pipe supporting frame 12 and the large belt wheel 15, and the end parts of the labyrinth frame 13, which are close to each other, and the large belt wheel 15 are mutually inserted to form a labyrinth structure; finally, the coal drop pipe support frame 12 is detachably connected with the first flange 17 on the outer wall of the bearing seat 16 through a first connecting bolt 18, and the labyrinth frame 13 is detachably connected with the first flange 17 on the outer wall of the bearing seat 16 through a second connecting bolt 19, so that labyrinth sealing connection between the upper coal drop pipe 11 and the lower coal drop pipe 14 is realized; the invention has simple structure and convenient installation.
Before the bearing 16 is required to be maintained, the labyrinth sealing device provided by the embodiment of the invention only needs to disconnect the connection between the coal drop pipe support frame 12 and the first flange 17 of the bearing seat 16 through the first connecting bolt 18, disconnect the connection between the labyrinth frame 13 and the first flange 17 of the bearing seat 16 and the connection between the coal drop pipe 14 and the large belt wheel 15 through the second connecting bolt 19, so that the coal drop pipe 14 can be loosened, the disassembly and the installation are convenient, the operation and maintenance workload of a customer is reduced, the engineering shutdown maintenance time is shortened, and the equipment operation rate is effectively improved.
Further, the first connecting bolts 18 are three of the first flanges 17 uniformly circumferentially arranged;
the second connecting bolts 19 are three of the first flanges 17 uniformly circumferentially arranged.
Further, the first connecting bolts 18 and the second connecting bolts 19 are uniformly staggered. Thereby reducing the number of applications of bolts while ensuring connection stability.
Further, the first connecting bolt 18 and the second connecting stud 19 each include a positioning step cylindrical section and a threaded section, one end of the positioning step cylindrical section is connected to the first flange 17, and the other end is connected to the threaded section.
Specifically, the positioning step cylindrical section and the threaded section may form a positioning pin, and the connection position of the first connecting bolt 18 and the coal pipe supporting frame 12, and the connection position of the second connecting stud 19 and the labyrinth frame 13 may be fixed by the height of the positioning step cylindrical section. In the case of fixed position determination, the distance between the labyrinth frame 13 and the large pulley 15 can be adjusted, and the size of the gap at the labyrinth seal is also determined, thereby facilitating quick positioning by the user.
Further, a first mounting hole 121 that mates with the first connecting bolt 18 is circumferentially provided on the coal pipe supporting frame 12, and a first nut 20 is provided at one end of the first connecting bolt 18 that passes through the first mounting hole 121.
The labyrinth frame 13 is circumferentially provided with a second mounting hole 131 matched with the second connecting bolt 19, and one end of the second connecting bolt 19 penetrating out of the second mounting hole 131 is provided with a second nut 21.
Further, a sealing ring 23 is arranged between the coal drop pipe supporting frame 12 and the labyrinth frame 13.
Further, a sealing groove 132 is formed in a side, close to the coal drop pipe supporting frame 12, of the labyrinth frame 13, and the sealing ring 20 is disposed in the sealing groove 132.
Specifically, the sealing ring 23 is an O-shaped sealing ring, and is assembled in the O-shaped sealing groove to seal a gap between the labyrinth frame 13 and the coal drop pipe supporting frame 12.
Further, a plurality of air ports 133 are circumferentially formed in the side wall of the labyrinth frame 13, so that the compressed air ports can conveniently enter from the side edge of the labyrinth frame 13.
When the labyrinth sealing device is manufactured, the size of the labyrinth gap can be determined by setting the height of the cylindrical section of the positioning step, so that the labyrinth sealing device is convenient to install and position subsequently.
According to the invention, the static equipment and the coal dropping pipe are welded in a mode of being replaced by bolts in a detachable mode, so that a user does not need to cut the coal dropping pipe when replacing a belt, the gap at the labyrinth seal is reset and is not limited by an external connecting piece, the supporting function of the upper and lower coal dropping pipes and the external connecting piece is realized through the coal dropping pipe supporting frame 12, and the supporting, positioning and resetting functions of the labyrinth structure are realized through the labyrinth frame.
Furthermore, the invention has simple structure, and is easy to improve the prior art to realize the technology of the invention, thereby optimizing, upgrading and reforming the prior engineering with low cost, solving the trouble that the labyrinth is easy to scratch in the prior art, greatly reducing the operation and maintenance workload of clients, shortening the shutdown and maintenance time of the engineering and greatly improving the operation rate.
The foregoing is merely illustrative of specific embodiments of the present invention, and the scope of the present invention is not limited thereto, but any changes or substitutions within the technical scope of the present invention should be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. The labyrinth sealing device is characterized by comprising an upper coal dropping pipe (11), a coal dropping pipe supporting frame (12), a labyrinth frame (13) and a coal dropping pipe (14) which are coaxially communicated in sequence;
the outside of the coal dropping pipe (14) is coaxially sleeved with a large belt wheel (15) and a bearing seat (16), the large belt wheel (15) is positioned between the bearing seat (16) and the labyrinth frame (13), and the large belt wheel (15) is fixedly connected with the end part of the bearing seat (16);
the end parts of the labyrinth frame (13) and the big belt wheel (15) which are close to each other are provided with comb-shaped structures which are mutually inserted to form a labyrinth sealing structure;
the coal dropping pipe (14) is detachably connected with one end of the large belt wheel (15) close to the coal dropping pipe (11);
the outer wall of the bearing seat (16) is convexly provided with a first flange (17);
a plurality of first connecting bolts (18) are circumferentially arranged on one side, facing the coal dropping pipe support frame (12), of the first flange (17), and the coal dropping pipe support frame (12) and the first flange (17) are detachably connected through the first connecting bolts (18);
a plurality of second connecting bolts (19) are circumferentially arranged on one side, facing the labyrinth frame (13), of the first flange (17), and the labyrinth frame (13) is detachably connected with the first flange (17) through the second connecting bolts (19).
2. Labyrinth sealing device as in claim 1, characterized in that said first connecting bolts (18) are three circumferentially uniformly arranged on said first flange (17);
the second connecting bolts (19) are circumferentially and uniformly arranged on the first flange (17).
3. Labyrinth seal as claimed in claim 2, characterized in that the first connecting bolts (18) and the second connecting bolts (19) are uniformly staggered.
4. A labyrinth seal as claimed in any one of claims 1 to 3, characterized in that the first connecting bolt (18) and the second connecting stud (19) each comprise a positioning step cylindrical section and a threaded section, one end of the positioning step cylindrical section being connected to the first flange (17) and the other end being connected to the threaded section.
5. Labyrinth seal as claimed in any one of claims 1 to 4, characterized in that a first mounting hole (121) is circumferentially arranged on the coal chute support frame (12) and is matched with the first connecting bolt (18), and a first nut (20) is arranged at one end of the first connecting bolt (18) penetrating out of the first mounting hole (121);
the labyrinth frame (13) is circumferentially provided with a second mounting hole (131) matched with the second connecting bolt (19), and one end of the second connecting bolt (19) penetrating out of the second mounting hole (131) is provided with a second nut (21).
6. Labyrinth sealing device as claimed in any one of claims 1 to 5, characterized in that a sealing ring (23) is arranged between the coal chute support (12) and the labyrinth frame (13).
7. The labyrinth sealing device as claimed in claim 6, characterized in that a sealing groove (132) is provided on a side of the labyrinth frame (13) close to the coal drop tube support frame (12), and the sealing ring (20) is provided in the sealing groove (132).
8. Labyrinth sealing as in claim 1, characterized in that the side walls of the labyrinth frame (13) are circumferentially open with a plurality of air ports (133).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311484603.9A CN117628189A (en) | 2023-11-08 | 2023-11-08 | Labyrinth sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311484603.9A CN117628189A (en) | 2023-11-08 | 2023-11-08 | Labyrinth sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117628189A true CN117628189A (en) | 2024-03-01 |
Family
ID=90020758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311484603.9A Pending CN117628189A (en) | 2023-11-08 | 2023-11-08 | Labyrinth sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117628189A (en) |
-
2023
- 2023-11-08 CN CN202311484603.9A patent/CN117628189A/en active Pending
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