CN216078267U - Novel sealing structure for sealing seat of mill cylinder - Google Patents
Novel sealing structure for sealing seat of mill cylinder Download PDFInfo
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- CN216078267U CN216078267U CN202121468965.5U CN202121468965U CN216078267U CN 216078267 U CN216078267 U CN 216078267U CN 202121468965 U CN202121468965 U CN 202121468965U CN 216078267 U CN216078267 U CN 216078267U
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Abstract
The utility model provides a novel mill barrel seal receptacle seal structure belongs to mechanical engineering technical field, relates to a sealing system structure's between coal slurry rod mill barrel welt bolt hole and the coal slurry rod mill barrel welt bolt improvement. The sealing structure of the sealing seat of the mill cylinder body provided by the utility model has the advantages of simple structure and good sealing effect. The utility model comprises a sealing seat, and is characterized in that: the sealing seat is fixed on the cylinder body, and a threaded hole in the sealing seat is communicated with the inside of the cylinder body; a sealing groove is arranged in the sealing seat, a cylindrical sealing ring is arranged in the sealing groove, a gland is arranged above the cylindrical sealing ring, and a screw penetrates through the gland and the cylindrical sealing ring to be matched with a threaded hole of the sealing seat; the screw rod is provided with a locking nut group of the gland.
Description
Technical Field
The utility model belongs to the technical field of mechanical engineering, and relates to an improvement of a sealing system structure between a bolt hole of a liner plate of a cylinder of a coal water slurry rod mill and a bolt of the liner plate of the cylinder of the coal water slurry rod mill.
Background
The sealing at the bolt hole of the liner plate of the water-coal-slurry rod mill barrel is the key point for maintaining the water-coal-slurry rod mill in the using process, if the sealing performance of the position is poor, slurry in the barrel can be leaked, the leaked slurry can splash everywhere and corrode equipment, and once the leaked slurry splashes into the meshing surface of the large gear and the small gear or the inside of the main bearing, the normal work of the mill can be directly influenced.
In the prior art, the sealing background and the structure diagram 6 show that the joint surface between the sealing ring 11 and the cylinder body 1 of the sealing structure is an arc surface, when the nut 12 is fastened downwards, the initial sealing effect is good, once the rubber sealing ring 11 is aged, a gap is formed on the joint surface, slurry in the cylinder body 1 splashes around in the rotating process of the grinding machine, the equipment is corroded, and once the slurry splashes into the meshing surfaces of the large gear and the small gear or the main bearing, the normal work of the grinding machine is directly influenced.
Disclosure of Invention
Aiming at the problems, the utility model provides the sealing structure of the sealing seat of the mill cylinder body, which has simple structure and good sealing effect.
In order to achieve the above purpose, the utility model adopts the following technical scheme, and the utility model comprises a sealing seat, and is characterized in that: the sealing seat is fixed on the cylinder body, and a threaded hole in the sealing seat is communicated with the inside of the cylinder body; a sealing groove is arranged in the sealing seat, a cylindrical sealing ring is arranged in the sealing groove, a gland is arranged above the cylindrical sealing ring, and a screw penetrates through the gland and the cylindrical sealing ring to be matched with a threaded hole of the sealing seat; the screw rod is provided with a locking nut group of the gland.
As a preferred scheme of the utility model, a pressure groove matched with the passing sealing ring is arranged in the gland; the sum of the depths of the pressure groove and the sealing groove in the sealing seat is less than the height of the cylindrical sealing ring.
As another preferable aspect of the present invention, the cylindrical seal ring is provided with fin edges on both the inner side and the outer side.
As a third preferred scheme of the utility model, the cylinder body is provided with a through hole, the lower end of the sealing seat is provided with a guide sleeve, the guide sleeve is matched with the through hole, and the upper part of the sealing seat is connected with the surface of the cylinder body in a welding way.
The utility model has the beneficial effects that: 1. according to the utility model, the sealing seat is connected with the cylinder body, and the sealing seat is fixed in a welding manner, so that the sealing seat and the cylinder body are connected into a whole, the curved surface on the surface of the cylinder body is not used as a sealing surface any more, and the situation that the sealing ring is matched with the curved surface to cause short sealing service life is avoided.
2. The cylindrical sealing ring is arranged between the gland and the sealing seat, and when cylindrical aging occurs, the cylindrical sealing ring can be pressurized by adjusting the screw rod and the locking nut group, so that the sealing performance is further improved, and the problem of sealing reduction caused by aging of the sealing ring is solved.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic view of a connection structure of the cylinder and the sealing seat.
Fig. 3 is a schematic structural view of the seal holder.
Fig. 4 is a schematic view of the structure of the gland.
Fig. 5 is a schematic structural view of a cylindrical seal ring.
Fig. 6 is a schematic view of a prior art seal structure.
In the attached drawing, 1 is a cylinder, 2 is a sealing seat, 3 is a cylindrical sealing ring, 4 is a gland, 5 is a locking nut group, 6 is a screw, 7 is a through hole, 8 is a guide sleeve, 9 is a sealing groove, 10 is a pressing groove, 11 is a fin edge, 12 is a sealing ring in the prior art, 13 is a nut in the prior art, and 14 is a gland in the prior art.
Detailed Description
The utility model comprises a sealing seat 2, and is characterized in that: the sealing seat 2 is fixed on the cylinder 1, and a threaded hole in the sealing seat 2 is communicated with the inside of the cylinder 1; a sealing groove 9 is arranged in the sealing seat 2, a cylindrical sealing ring 3 is arranged in the sealing groove 9, a gland 4 is arranged above the cylindrical sealing ring 3, and a screw rod 6 penetrates through the gland 4 and the cylindrical sealing ring 3 to be matched with a threaded hole of the sealing seat 2; the screw rod 6 is provided with a locking nut group 5 of the gland 4.
As a preferred scheme of the present invention, a pressure groove 10 matched with the passing seal ring is arranged in the gland 4; the sum of the depths of the pressure groove 10 and the sealing groove 9 in the sealing seat 2 is less than the height of the cylindrical sealing ring 3.
As another preferable aspect of the present invention, the cylindrical seal ring 3 is provided with fin edges 11 on both the inner side and the outer side.
As a third preferred scheme of the utility model, a through hole 7 is formed in the cylinder 1, a guide sleeve 8 is arranged at the lower end of the sealing seat 2, the guide sleeve 8 is matched with the through hole 7, and the upper part of the sealing seat 2 is connected with the surface of the cylinder 1 in a welding manner.
In the originally designed sealing structure, a screw 6, a sealing ring 12, a gland 14 and a piece nut 13 are sequentially arranged at a screw hole of a piece cylinder body 1, the nut 13 is screwed up through a torque wrench, applied torque sequentially passes through the nut 13 and the gland 14, and transmitted pressure finally reaches the end face of the sealing ring 12 to deform the sealing ring, the sealing ring is completely attached to and compacted at the outer circle of the screw along with the increase of the pressure and the inner diameter is completely deformed and is completely attached to and compacted at the screw hole of the piece cylinder body 1 along with the deformation in the thickness direction, so that sealing is formed. Because the end face of the sealing ring is a straight face, but the end face of the cylinder body 1 attached to the sealing ring is a cylindrical face, if the two parts are completely attached to each other, a larger pressure needs to be applied to the sealing ring 12 to generate enough deformation, the service life of the sealing ring 12 is greatly reduced in the process, and once the elasticity of the sealing ring 12 is weakened, slurry can leak from a screw hole to pollute equipment and the environment.
The implementation mode of the new sealing structure is improved on the basis of the original design:
the size of the screw hole of the cylinder body 1 is determined according to the specification size and the single weight of the mill, then the diameter of the screw hole of the cylinder body 1 is expanded to a through hole 7 matched with a guide sleeve 8 of the sealing seat 2 in size, the sealing seat 2 is welded at the through hole 7 after the expansion, the welding line is a continuous fillet welding line, the welding angle is not less than 8mm, and leakage test is carried out at the position after welding without water leakage.
Through calculation, the cylindrical sealing ring 3 with proper diameter and thickness is selected according to other parts (the screw rod 6, the gland 4 and the sealing seat 2), so that the sealing ring can completely fill the gap after being closed, and the sealing effect is realized.
With screw rod 6, cylindric sealing washer 3, gland 4, lock nut group 5 installs in proper order to close on seal receptacle 2, screw up lock nut group 5 through the torque wrench, the moment of force loops through lock nut group 5, gland 4, the pressure of transmission is 3 terminal surfaces of cylindric sealing washer finally, make its internal diameter, the external diameter all produces deformation, along with pressure grow internal diameter inwards warp and laminate completely and compact in 6 excircle departments of screw rod, the external diameter outwards warp and laminate completely and compact in 2 interior departments of seal receptacle, control its deformation direction, thickness direction is laminated completely and compact with 2 terminal surfaces of seal receptacle downwards, three kinds of deformation form a combination seal.
Compared with the original design, the binding face of the cylindrical sealing ring 3 and the sealing seat 2 is a plane, and the gland 4 limits the deformation direction of the cylindrical sealing ring 3, so that the cylindrical sealing ring 3 and the sealing seat 2 can be completely bound only by small pressure of the sealing structure, the sealing effect is ensured, the service life of the cylindrical sealing ring 3 is greatly prolonged compared with the original design, a large amount of maintenance work is reduced, and the benefit of an enterprise is also improved while the integral work efficiency of the mill is improved.
It should be understood that the detailed description of the present invention is only for illustrating the present invention and is not limited by the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that the present invention can be modified or substituted equally to achieve the same technical effects; as long as the use requirements are met, the method is within the protection scope of the utility model.
Claims (4)
1. The utility model provides a novel mill barrel seal receptacle seal structure, includes seal receptacle (2), its characterized in that: the sealing seat (2) is fixed on the cylinder body (1), and a threaded hole in the sealing seat (2) is communicated with the inside of the cylinder body (1); a sealing groove (9) is arranged in the sealing seat (2), a cylindrical sealing ring (3) is arranged in the sealing groove (9), a gland (4) is arranged above the cylindrical sealing ring (3), and a screw rod (6) penetrates through the gland (4) and the cylindrical sealing ring (3) to be matched with a threaded hole of the sealing seat (2); the screw rod (6) is provided with a locking nut group (5) of the gland (4).
2. The novel seal structure for the seal seat of the mill cylinder according to claim 1, characterized in that: a pressure groove (10) matched with the passing sealing ring is arranged in the gland (4); the sum of the depths of the pressure groove (10) and the sealing groove (9) in the sealing seat (2) is less than the height of the cylindrical sealing ring (3).
3. The novel seal structure for the seal seat of the mill cylinder according to claim 1, characterized in that: and fin edges (11) are arranged on the inner side and the outer side of the cylindrical sealing ring (3).
4. The novel seal structure for the seal seat of the mill cylinder according to claim 1, characterized in that: the barrel is characterized in that a through hole (7) is formed in the barrel body (1), a guide sleeve (8) is arranged at the lower end of the sealing seat (2), the guide sleeve (8) is matched with the through hole (7), and the upper portion of the sealing seat (2) is connected with the surface of the barrel body (1) in a welding mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121468965.5U CN216078267U (en) | 2021-06-30 | 2021-06-30 | Novel sealing structure for sealing seat of mill cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121468965.5U CN216078267U (en) | 2021-06-30 | 2021-06-30 | Novel sealing structure for sealing seat of mill cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216078267U true CN216078267U (en) | 2022-03-18 |
Family
ID=80664239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121468965.5U Active CN216078267U (en) | 2021-06-30 | 2021-06-30 | Novel sealing structure for sealing seat of mill cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216078267U (en) |
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2021
- 2021-06-30 CN CN202121468965.5U patent/CN216078267U/en active Active
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