CN216407730U - Coal pulverizer pull rod seal structure - Google Patents
Coal pulverizer pull rod seal structure Download PDFInfo
- Publication number
- CN216407730U CN216407730U CN202123396106.2U CN202123396106U CN216407730U CN 216407730 U CN216407730 U CN 216407730U CN 202123396106 U CN202123396106 U CN 202123396106U CN 216407730 U CN216407730 U CN 216407730U
- Authority
- CN
- China
- Prior art keywords
- sealing
- pull rod
- upper shell
- wall
- mounting
- 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.)
- Active
Links
Images
Abstract
The utility model discloses a coal mill pull rod sealing structure which comprises an upper shell, wherein a lifting groove is formed in the bottom end of the upper shell, which is close to a through hole, a return spring is fixedly connected to the inner wall of the top of the lifting groove, a lifting block is fixedly connected to the bottom end of the return spring, and two convex rings at the bottom of the lifting block are respectively positioned in a sealing pad. According to the utility model, the two convex rings at the bottom of the lifting block are arranged in the rubber pad, the upper shell and the lower shell are fixed by the aid of the mounting bolts matched with the mounting nuts, the lifting block is used for extruding the sealing gasket in the rubber pad under the action of the reset spring, so that a sealing effect is achieved, the sealing performance of the upper shell and the lower shell during connection is further improved by the aid of the sealing ring, and the rubber plug is inserted into the mounting hole after connection, so that the mounting bolts are prevented from being located outside for a long time, rusting is prevented, subsequent disassembly is influenced, and the lifting device is convenient for an operator to disassemble.
Description
Technical Field
The utility model relates to the technical field of pulverized coal processing equipment, in particular to a pull rod sealing structure of a coal mill.
Background
The coal pulverizer is the machinery that breaks the coal cinder and grinds into the buggy, it is the important auxiliary assembly of coal pulverizer, the pull rod of coal pulverizer not only will the up-and-down motion still the level rock, it is sealed comparatively difficult, seal structure is unreasonable to make the pull rod seriously wear, the diameter diminishes, the intensity step-down causes pull rod department to leak out the wind and leak the powder, thereby cause the unit operation unstable, the vibration increases, cause the damage of other parts even, in order to solve the problem that appears above, then need use a coal pulverizer pull rod composite seal device.
Traditional coal pulverizer is when sealing up the pull rod, and seal structure is comparatively simple to lead to sealed effect not good, and then influence subsequent processing and use, when connecting, lack the protection to the part of connecting simultaneously, thereby lead to subsequent dismantlement to have certain inconvenience.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the defects in the prior art, and provides a pull rod sealing structure of a coal mill.
In order to achieve the purpose, the utility model adopts the following technical scheme: a coal mill pull rod sealing structure comprises an upper shell, wherein a lifting groove is arranged at the bottom end of the upper shell close to a through hole, a reset spring is fixedly connected to the inner wall of the top of the lifting groove, a lifting block is fixedly connected to the bottom end of the reset spring, two convex rings at the bottom of the lifting block are respectively positioned in a sealing gasket, the sealing gasket is arranged in a limiting groove, the limiting groove is arranged at the top end of a lower shell close to the through hole, mounting holes are respectively formed in the lower shell and the upper shell far away from the through hole in the middle, mounting bolts are arranged in the mounting holes, mounting nuts are connected to the bottom ends of the outer walls of the mounting bolts in a threaded manner, the outer walls of the mounting nuts are fixedly connected to the interiors of nut sleeves, a second sealing groove is formed in the inner wall of the middle lower portion of the upper shell, and a second sealing sleeve is arranged in the second sealing groove, the inner part of the second sealing sleeve is provided with a first steel ring, a first sealing groove is formed in the inner wall of the middle part of the upper shell, a first sealing sleeve is arranged in the first sealing groove, a second steel ring is arranged in the first sealing sleeve, a sealing piece is arranged on the inner wall of the upper part of the middle part of the upper shell, the bottom end of the sealing piece is close to the inner part of the slot at the position of the outer diameter, a fixing bolt is arranged at the middle part of one section of the sealing piece in the slot, the fixing bolt is located in the inner part of the connecting hole, the connecting hole is formed in the top end of the outer wall of the upper shell, and sealing rings are arranged below the inner walls of the two sides of the slot.
As a further description of the above technical solution:
the through hole in the middle of the lower shell is arranged below the outer wall of the pull rod body.
As a further description of the above technical solution:
the through holes in the middle of the upper shell and the sealing element are arranged above the outer wall of the pull rod body.
As a further description of the above technical solution:
the lifting groove is characterized in that annular grooves are formed in two sides of the middle of the lifting groove, and sealing rings are arranged inside the annular grooves.
As a further description of the above technical solution:
the top end of the nut sleeve is fixedly connected to the bottom of the lower shell.
As a further description of the above technical solution:
and a rubber plug is arranged in the mounting hole at the top end of the upper shell.
As a further description of the above technical solution:
the first sealing sleeve and the second sealing sleeve are concave.
As a further description of the above technical solution:
and a lug is arranged at the bottom end of the outer wall of the sealing element in the upper shell.
The utility model has the following beneficial effects:
1. according to the utility model, firstly, the two convex rings at the bottom of the lifting block and the rubber pad are inserted into the mounting hole from top to bottom and rotated, the upper shell and the lower shell are fixed by matching with the mounting nut, and meanwhile, the lifting block extrudes the sealing gasket in the rubber pad under the action of the reset spring, so that the sealing effect is achieved, the sealing performance of the upper shell and the lower shell in connection is further improved by matching with the sealing ring, and the rubber plug is inserted into the mounting hole after connection, so that the mounting bolt is prevented from being located outside for a long time, rusting is prevented, and subsequent disassembly is influenced, and the disassembly is convenient for an operator.
2. According to the utility model, the sealing element and the upper shell can be fixed under the action of the fixing bolt, the sealing element can play a role in sealing the pull rod body under the action of the projection, the service lives of the first sealing sleeve and the second sealing sleeve can be effectively prolonged under the action of the second steel ring and the first steel ring, and the continuous processing and use are convenient.
Drawings
FIG. 1 is an internal schematic view of a coal pulverizer pull rod seal structure in accordance with the present invention;
FIG. 2 is a schematic connection diagram of a return spring in a coal mill pull rod sealing structure according to the present invention;
fig. 3 is a schematic view of the interior of an upper housing in a coal mill pull rod sealing structure according to the present invention.
Illustration of the drawings:
1. a pull rod body; 2. a seal member; 3. a first steel ring; 4. a rubber plug; 5. mounting holes; 6. a lifting block; 7. mounting a nut; 8. a nut sleeve; 9. a lower housing; 10. installing a bolt; 11. a lifting groove; 12. an upper housing; 13. a second steel ring; 14. fixing the bolt; 15. a return spring; 16. a seal ring; 17. a gasket; 18. an annular groove; 19. a limiting groove; 20. a first sealing sleeve; 21. a second sealing sleeve; 22. a second sealing groove; 23. a first sealing groove; 24. a bump; 25. connecting holes; 26. a slot; 27. and (4) a sealing ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-3, one embodiment of the present invention is provided: a coal mill pull rod sealing structure comprises an upper shell 12, wherein a lifting groove 11 is arranged at the bottom end of the upper shell 12 close to a through hole, a reset spring 15 is fixedly connected to the inner wall of the top of the lifting groove 11, a lifting block 6 is fixedly connected to the bottom end of the reset spring 15, two convex rings at the bottom of the lifting block 6 are respectively positioned inside a sealing gasket 17, the sealing gasket 17 is arranged inside a limiting groove 19, the limiting groove 19 is arranged at the top end of a lower shell 9 close to the through hole, the two convex rings at the bottom of the lifting block 6 and a rubber gasket 19 are inserted into an installation hole 5 from top to bottom and rotate, the upper shell 12 and the lower shell 9 are fixed by matching with an installation nut 7, the lifting block 6 is enabled to extrude the sealing gasket 17 in the rubber gasket 19 under the action of the reset spring 15, a sealing effect is achieved, the lower shell 9 and the upper shell 12 are respectively provided with installation holes 5 far away from the inner parts of the middle through hole, the mounting hole 5 is internally provided with a mounting bolt 10, the bottom end of the outer wall of the mounting bolt 10 is in threaded connection with a mounting nut 7, the outer wall of the mounting nut 7 is fixedly connected with the inside of a nut sleeve 8, the inner wall of the lower middle part of the upper shell 12 is provided with a sealing groove two 22, the inside of the sealing groove two 22 is provided with a sealing sleeve two 21, the inside of the sealing sleeve two 21 is provided with a steel ring one 3, the inner wall of the middle part of the upper shell 12 is provided with a sealing groove one 23, the inside of the sealing groove one 23 is provided with a sealing sleeve one 20, the inside of the sealing sleeve one 20 is provided with a steel ring two 13, the inner wall of the middle upper part of the upper shell 12 is provided with a sealing element 2, the bottom end of the sealing element 2, which is close to the outer diameter, is positioned inside a slot 26, the middle part of the sealing element 2, which is positioned inside the slot 26 is provided with a fixing bolt 14, the fixing bolt 14 is positioned inside a connecting hole 25, and the connecting hole 25 is positioned right above the top end of the outer wall of the upper shell 12, the below of slot 26 both sides inner wall all is provided with sealing ring 27, insert the rubber buffer 4 mounting hole 5 department after connecting, thereby prevent that mounting bolt 10 from being located the external world for a long time, lead to rustting and influence subsequent dismantlement, thereby be convenient for operating personnel dismantles, owing to under fixing bolt 14's effect, can fix sealing member 2 and last casing 12, and make sealing member 2 play sealed effect to pull rod body 1 under the effect of lug 24, and can effectually improve the life of seal cover one 20 and seal cover two 21 at steel ring two 13 and steel ring one 3, be convenient for continued processing and use.
The through hole in the middle of the lower shell 9 is arranged below the outer wall of the pull rod body 1, the through hole in the middle of the upper shell 12 and the sealing element 2 is arranged above the outer wall of the pull rod body 1, the two sides of the middle of the lifting groove 11 are both provided with the annular grooves 18, the sealing rings 16 are arranged inside the annular grooves 18, the sealing performance of the upper shell 12 and the lower shell 9 during connection is further improved by matching the sealing rings 16, the top end of the nut sleeve 8 is fixedly connected to the bottom of the lower shell 9, the rubber plug 4 is arranged inside the mounting hole 5 at the top end of the upper shell 12, the sealing sleeve I20 and the sealing sleeve II 21 are concave, the service lives of the sealing sleeve I20 and the sealing sleeve II 21 can be effectively prolonged by matching the steel ring II 13 and the steel ring I3, the continuous processing and use are facilitated, the bump 24 is arranged at the bottom end of the outer wall of the sealing element 2 inside the upper shell 12, and the sealing element 2 plays a sealing role in sealing for the pull rod body 1 under the effect of the bump 24.
The working principle is as follows: firstly, two convex rings at the bottom of a lifting block 6 and a rubber pad 19 are arranged, a mounting bolt 10 is inserted into a mounting hole 5 from top to bottom and rotates, an upper shell 12 and a lower shell 9 are fixed by matching with a mounting nut 7, meanwhile, the lifting block 6 extrudes a sealing pad 17 in the rubber pad 19 under the action of a return spring 15, so that the sealing effect is realized, the sealing performance when the upper shell 12 and the lower shell 9 are connected is further improved by matching with a sealing ring 16, a rubber plug 4 is inserted into the mounting hole 5 after the connection is finished, so that the mounting bolt 10 is prevented from being positioned outside for a long time, rusting is caused to influence subsequent disassembly, the disassembly is convenient for operators to disassemble, because the sealing element 2 and the upper shell 12 can be fixed under the action of the fixing bolt 14, and the sealing element 2 plays a sealing effect on the pull rod body 1 under the action of a lug 24, and the service lives of the first sealing sleeve 20 and the second sealing sleeve 21 can be effectively prolonged at the second steel ring 13 and the first steel ring 3, and the continuous processing and the use are convenient.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.
Claims (8)
1. A coal pulverizer pull rod seal structure, includes upper housing (12), its characterized in that: the bottom end of the upper shell (12) is provided with a lifting groove (11) close to the through hole, the inner wall of the top of the lifting groove (11) is fixedly connected with a reset spring (15), the bottom end of the reset spring (15) is fixedly connected with a lifting block (6), two convex rings at the bottom of the lifting block (6) are respectively positioned in a sealing gasket (17), the sealing gasket (17) is arranged in a limiting groove (19), the limiting groove (19) is arranged at the top end of the lower shell (9) close to the through hole, mounting holes (5) are respectively arranged in the lower shell (9) and the upper shell (12) far away from the middle through hole, mounting bolts (10) are arranged in the mounting holes (5), the bottom end of the outer wall of each mounting bolt (10) is in threaded connection with a mounting nut (7), and the outer wall of each mounting nut (7) is fixedly connected in the interior of a nut sleeve (8), the inner wall of the middle lower part of the upper shell (12) is provided with a second sealing groove (22), the inside of the second sealing groove (22) is provided with a second sealing sleeve (21), the inside of the second sealing sleeve (21) is provided with a first steel ring (3), the inner wall of the middle part of the upper shell (12) is provided with a first sealing groove (23), the inside of the first sealing groove (23) is provided with a first sealing sleeve (20), the inside of the first sealing sleeve (20) is provided with a second steel ring (13), the inner wall of the middle upper part of the upper shell (12) is provided with a sealing element (2), the bottom end of the sealing element (2) is close to the outer diameter and is positioned inside a slot (26), the middle part of one section of the sealing element (2) positioned in the slot (26) is provided with a fixing bolt (14), the fixing bolt (14) is positioned inside a connecting hole (25), the connecting hole (25) is arranged at the top end of the outer wall of the upper shell (12), and sealing rings (27) are arranged below the inner walls of the two sides of the slot (26).
2. The coal pulverizer pull rod sealing structure of claim 1, characterized in that: the through hole in the middle of the lower shell (9) is arranged below the outer wall of the pull rod body (1).
3. The coal pulverizer pull rod sealing structure of claim 1, characterized in that: the through holes in the middle parts of the upper shell (12) and the sealing element (2) are arranged above the outer wall of the pull rod body (1).
4. The coal pulverizer pull rod sealing structure of claim 1, characterized in that: annular grooves (18) are formed in two sides of the middle of the lifting groove (11), and sealing rings (16) are arranged inside the annular grooves (18).
5. The coal pulverizer pull rod sealing structure of claim 1, characterized in that: the top end of the nut sleeve (8) is fixedly connected to the bottom of the lower shell (9).
6. The coal pulverizer pull rod sealing structure of claim 1, characterized in that: and a rubber plug (4) is arranged in the mounting hole (5) at the top end of the upper shell (12).
7. The coal pulverizer pull rod sealing structure of claim 1, characterized in that: the first sealing sleeve (20) and the second sealing sleeve (21) are concave.
8. The coal pulverizer pull rod sealing structure of claim 1, characterized in that: a lug (24) is arranged at the bottom end of the outer wall of the sealing element (2) in the upper shell (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123396106.2U CN216407730U (en) | 2021-12-31 | 2021-12-31 | Coal pulverizer pull rod seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123396106.2U CN216407730U (en) | 2021-12-31 | 2021-12-31 | Coal pulverizer pull rod seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216407730U true CN216407730U (en) | 2022-04-29 |
Family
ID=81287058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123396106.2U Active CN216407730U (en) | 2021-12-31 | 2021-12-31 | Coal pulverizer pull rod seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216407730U (en) |
-
2021
- 2021-12-31 CN CN202123396106.2U patent/CN216407730U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN216407730U (en) | Coal pulverizer pull rod seal structure | |
| CN208735066U (en) | High-sealing-performflange flange is used in a kind of connection of pipeline | |
| CN201615081U (en) | Essential service water pump of nuclear power station of pressurized water reactor | |
| CN211647972U (en) | Rotary joint for horizontal directional drilling machine and horizontal directional drilling machine | |
| CN108869910A (en) | High-sealing-performflange flange is used in a kind of connection of pipeline | |
| CN212202721U (en) | Flange ring piece of radar rotary driving device | |
| CN211160226U (en) | Automatic alarm magnetic filter | |
| CN212775112U (en) | Riveting type mutual pressing sealing structure | |
| CN202837770U (en) | Sealed structure of spherical security protection monitoring apparatus | |
| CN210585108U (en) | Dustproof device of single-cylinder hydraulic cone crusher | |
| CN205001604U (en) | Idle call stop valve that inclines out | |
| CN213669458U (en) | Cone crusher shell convenient to installation | |
| CN208272400U (en) | Cable sealing device and power distribution cabinet for power distribution cabinet | |
| CN207624518U (en) | A kind of bushing shell for transformer head construction with rainproof function | |
| CN219888721U (en) | Single-cylinder conical broken taper sleeve sealing dustproof structure | |
| CN220416227U (en) | High-pressure water rotary sealing device with two-stage sealing | |
| CN218000037U (en) | High leakproofness suspension cylinder | |
| CN214789593U (en) | Pipeline connecting piece convenient to overhaul | |
| CN212017998U (en) | Totally-enclosed multiple sealing device for grinding roller of vertical mill | |
| CN219712085U (en) | Sealing structure of bearing end cover of crusher | |
| CN217234393U (en) | Lubrication sealing device for coupling end of transmission shaft of gyratory crusher | |
| CN210461430U (en) | Bearing frame that dustproof effect is good | |
| CN212992093U (en) | Dual dustproof and waterproof sealing device of waterproof fan motor shaft body end | |
| CN216279245U (en) | High-sealing combined oil seal of ball screw pair | |
| CN114628875B (en) | Coupler convenient to maintain |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |