CN219452871U - Sealing gland and sealing structure for rotary shaft - Google Patents
Sealing gland and sealing structure for rotary shaft Download PDFInfo
- Publication number
- CN219452871U CN219452871U CN202320120843.XU CN202320120843U CN219452871U CN 219452871 U CN219452871 U CN 219452871U CN 202320120843 U CN202320120843 U CN 202320120843U CN 219452871 U CN219452871 U CN 219452871U
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- gland
- sealing
- packing
- rotating shaft
- glue injection
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The utility model discloses a sealing gland and a sealing structure for a rotating shaft, which belong to the technical field of shaft sealing, wherein the sealing gland comprises a gland main body, the gland main body is in a circular shape, a glue injection channel is arranged in the gland main body, the glue injection channel at least comprises a first glue injection hole formed by penetrating through the outer side surface of the gland main body, the glue injection channel at least comprises a second glue injection hole which is perpendicular to the central axis direction of the sealing gland and is towards the inner side wall of the gland main body, and an annular glue injection groove which is arranged on the bottom surface of the gland main body and is coaxial with the gland main body, the bottom surface of the annular glue injection groove is communicated with the second glue injection hole, and the bottom surface or the side surface of the annular glue injection groove is communicated with the first glue injection hole. The beneficial effects of the utility model are as follows: the sealing gland with the glue injection channel is arranged, and after the sealing gland is pressed on the packing through the design of the glue injection channel, the sealing glue is injected into the glue injection hole continuously, so that a good sealing effect is achieved between the sealing gland and the packing and between the packing and the rotating shaft.
Description
Technical Field
The utility model relates to the technical field of shaft sealing, in particular to a sealing gland and a sealing structure for a rotating shaft.
Background
A common seal structure of rotation axis for in water adopts skeleton oil blanket + copper sheathing + skeleton oil blanket + packing gland, and it is in the use, because contain impurity in the water, thereby each part can appear wearing and tearing and lead to packing department to produce the seepage, has the problem that seepage defect can't handle in the operation moreover.
Taking a low-speed vortex winding device configured by a WBS2800 type rubber ball cleaning device produced by a power auxiliary mill in hong Xiang production of tin-free city as an example, the vortex winding device has the function of enabling rubber balls to be easily accumulated in dead angle areas near a rubber ball collecting net of a condenser outlet circulating water pipeline, and the vortex winding blade rotates around at a rotating speed of not more than 16 revolutions per minute after a motor passes through a speed reducing device.
The conventional sealing mode of copper bush, skeleton oil seal and high water base packing is adopted around the vortex blade shaft packing, and in actual use, the copper bush, the skeleton oil seal and the high water base packing are worn after a period of use due to impurities contained in circulating water, so that leakage can occur at the packing, and the leakage defect is not easy to treat in operation due to incapability of shutdown isolation of the system.
The utility model patent application with publication number of CN115405553A discloses a multistage centrifugal pump shaft seal structure for mines, which comprises a shaft sleeve and a stuffing box body sleeved outside the shaft sleeve, wherein the inner side of the stuffing box body is a ring groove, an annular cavity is formed between the ring groove and the shaft sleeve, a front packing, a front compression ring, a spring, a rear compression ring and a rear packing are sequentially arranged in the annular cavity from inside to outside, a stuffing gland is arranged on the outer side of the rear packing, the stuffing gland presses the rear packing into the annular cavity, the spring is compressed and arranged in a stuffing space formed between the front compression ring and the rear compression ring, and mud soft stuffing is filled in the stuffing space, so that no abrasion is generated between the mud soft stuffing and the shaft sleeve, the service life of the pump is greatly prolonged, the pump is not required to be stopped, the workload of pump maintenance and overhaul is reduced, but the risk of abrasion and leakage still exists.
In view of this, the present inventors have made intensive studies to address this need, and have made the present utility model.
Disclosure of Invention
In order to overcome the problems that in the prior art, a copper sleeve, a framework oil seal and a high-water-based packing at a rotating shaft packing part are worn after being used for a period of time, leakage can occur at the packing part, and the leakage defect is difficult to treat in operation because a system cannot be shut down and isolated, the utility model provides a sealing gland.
The sealing gland with the glue injection channel is arranged, and after the sealing gland is pressed on the packing through the design of the glue injection channel, the sealing glue is injected into the glue injection hole continuously, so that a good sealing effect is achieved between the sealing gland and the packing and between the packing and the rotating shaft.
Preferably, the straight line where the central axis of each second glue injection hole is located passes through the central axis of the gland main body, and the second glue injection holes are uniformly distributed on the inner side wall of the gland main body along the circumferential direction of the gland main body.
Preferably, 4 mounting through holes are uniformly distributed in the circumferential direction at the position, close to the outer edge, of the gland main body, and the central axis of each mounting through hole is parallel to the central axis of the gland main body.
Preferably, an inward concave arc curved surface is formed at the position, close to the bottom surface, of the inner side wall of the gland main body, the central axis of the arc curved surface is coaxial with the gland main body, and the second glue injection hole is located on the arc curved surface.
The utility model also provides a sealing structure for the rotating shaft, which sequentially comprises a packing gland, a packing, a first framework oil seal, a copper sleeve and a second framework oil seal which are arranged in a superposed manner, wherein the packing gland is covered on one side surface of the packing gland, which is far away from the packing, and the packing gland, the packing, the first framework oil seal, the copper sleeve and the second framework oil seal are all sleeved on the rotating shaft and are concentric with the rotating shaft.
Preferably, the surface of the sealing pressing cover, where the annular glue injection groove is located, is arranged on one side surface, far away from the packing, of the packing pressing cover.
Preferably, the material of the rotating shaft at the sealing gland is #20 steel or more or the material with the hardness of 200HB or more, and the sealing gland is filled with the sealing glue containing copper wires in the glue injection channel, between the sealing gland and the packing gland, between the sealing gland and the rotating shaft and between the packing gland and the rotating shaft.
Preferably, the diameter of the rotating shaft is larger than 200mm, and the sealing gland is covered in the glue injection channel and between the sealing gland and the packing gland, and sealing glue containing copper wires is filled between the sealing gland and the rotating shaft and between the packing gland and the rotating shaft.
Preferably, the material hardness of the rotating shaft at the sealing gland is below 200HB, and sealing glue containing nylon fibers and graphite is filled in the glue injection channel on the sealing gland, between the sealing gland and the packing gland, between the sealing gland and the rotating shaft and between the packing gland and the rotating shaft.
The first glue injection hole, the second glue injection hole and the annular glue injection groove are arranged, so that the sealant injected from the first glue injection hole is uniformly dispersed at the bottom of the sealing gland through the annular glue injection groove, then reaches the inside of a glue injection channel on the sealing gland, between the sealing gland and the packing gland, between the sealing gland and the rotating shaft and between the packing gland and the rotating shaft, and uniform distribution of the sealant is realized.
The beneficial effects are that:
the technical scheme of the utility model has the following beneficial effects:
(1) The sealing gland with the glue injection channel is arranged, and after the sealing gland is pressed on the packing through the design of the glue injection channel, the sealing glue is injected into the glue injection hole continuously, so that a good sealing effect is achieved between the sealing gland and the packing and between the packing and the rotating shaft.
(2) The first glue injection hole, the second glue injection hole and the annular glue injection groove are arranged, so that the sealant injected from the first glue injection hole is uniformly dispersed at the bottom of the sealing gland through the annular glue injection groove, then reaches the inside of a glue injection channel on the sealing gland, between the sealing gland and the packing gland, between the sealing gland and the rotating shaft and between the packing gland and the rotating shaft, and uniform distribution of the sealant is realized.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic perspective view of a preferred seal gland of the present utility model;
FIG. 2 is a schematic diagram showing a perspective view of a preferred seal gland according to the present utility model;
FIG. 3 is a schematic view of a seal structure for a rotary shaft according to the present utility model.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.
As shown in fig. 1-2, the sealing gland 1 comprises a gland body, the gland body is in a circular shape, a glue injection channel 11 is arranged in the gland body, the glue injection channel 11 at least comprises a first glue injection hole 111 formed through the outer side surface of the gland body, the glue injection channel 11 at least comprises a second glue injection hole 112 which is perpendicular to the central axis direction of the sealing gland and is towards the inner side wall of the gland body, and an annular glue injection groove 113 which is arranged on the bottom surface of the gland body and is coaxial with the gland body, the bottom surface of the annular glue injection groove 113 is communicated with the second glue injection hole 112, and the bottom surface or the side surface of the annular glue injection groove 113 is communicated with the first glue injection hole 111.
The straight line where the central axis of each second glue injection hole 112 is located passes through the central axis of the gland main body, and the second glue injection holes 112 are uniformly distributed on the inner side wall of the gland main body along the circumferential direction of the gland main body.
4 mounting through holes 114 are uniformly distributed on the gland main body near the outer edge along the circumferential direction, and the central axis of each mounting through hole 114 is parallel to the central axis of the gland main body.
The inner side wall of the gland main body is provided with an inward concave arc curved surface 115 near the bottom surface, the central axis of the arc curved surface 115 is coaxial with the gland main body, and the second glue injection hole 112 is positioned on the arc curved surface 115.
As shown in fig. 3, this embodiment further provides a sealing structure for a rotating shaft, which sequentially includes a packing gland 2, a packing 3, a first framework oil seal 4, a copper sleeve 5 and a second framework oil seal 6 that are overlapped, wherein the packing gland 2 is far away from a side surface upper cover of the packing 3 and is provided with a sealing gland 1, the packing gland 2, the packing 3, the first framework oil seal 4, the copper sleeve 5 and the second framework oil seal 6 are all sleeved on the rotating shaft 100 and are concentric with the rotating shaft 100, and one end of the rotating shaft 100 is provided with a motor 200.
The surface of the sealing gland 1, on which the annular glue injection groove 113 is arranged, is arranged on one side surface, far away from the packing 3, of the packing gland 2.
When the material of the rotating shaft at the sealing gland 1 is #20 steel or more or the material with the hardness of 200HB or more, the sealing gland 1 is filled with the sealing glue containing copper wires in the glue injection channel 11, between the sealing gland 1 and the packing gland 2, between the sealing gland 2 and the rotating shaft 100 and between the packing gland 2 and the rotating shaft 100.
When the diameter of the rotating shaft is larger than 200mm, the sealing gland 1 is filled with the sealing glue containing copper wires in the glue injection channel 11, between the sealing gland 1 and the packing gland 2, between the sealing gland 1 and the rotating shaft 100 and between the packing gland 2 and the rotating shaft 100.
When the material hardness of the rotating shaft at the sealing gland is below 200HB, sealing glue containing nylon fibers and graphite is filled in the glue injection channel 11 on the sealing gland 1, between the sealing gland 1 and the packing gland 2, between the sealing gland 1 and the rotating shaft 100 and between the packing gland 2 and the rotating shaft 100.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, and various modifications and variations may be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (9)
1. The utility model provides a sealing gland, its characterized in that includes the gland main part, the gland main part is the ring form, and its inside is provided with the injecting glue passageway, including at least one run through the first injecting glue hole that forms of gland main part lateral surface on the injecting glue passageway, the injecting glue passageway is at least including along the perpendicular to sealing gland center pin direction to the second injecting glue hole of gland main part inside wall and setting are in the gland main part bottom surface and with the coaxial cyclic annular injecting glue groove of gland main part, cyclic annular injecting glue groove bottom surface with second injecting glue hole intercommunication, cyclic annular injecting glue groove bottom surface or side with first injecting glue hole intercommunication.
2. The sealing gland according to claim 1, wherein each of the second glue injection holes is located on a straight line passing through the central axis of the gland body, and the second glue injection holes are uniformly distributed on the inner side wall of the gland body along the circumferential direction of the gland body.
3. The sealing gland according to claim 1, wherein 4 mounting through holes are uniformly distributed in the circumferential direction at the position, close to the outer edge, of the gland main body, and the central axes of the mounting through holes are parallel to the central axis of the gland main body.
4. The sealing gland according to claim 1, wherein an inward concave arc curved surface is formed on the inner side wall of the gland body near the bottom surface, the center axis of the arc curved surface is coaxial with the gland body, and the second glue injection hole is located on the arc curved surface.
5. The utility model provides a seal structure for rotation axis, its characterized in that includes packing gland, packing, first skeleton oil blanket, copper sheathing and the second skeleton oil blanket that the coincide set up in proper order, packing gland is covered and is kept away from packing one side upper cover is equipped with the seal gland of any one of claims 1-4, seal gland packing gland, packing, first skeleton oil blanket, the copper sheathing the second skeleton oil blanket all overlaps to establish on the rotation axis and with rotation axis concentric axis.
6. The seal structure for a rotary shaft according to claim 5, wherein a face of the seal pressing cover where the annular glue injection groove is located is provided on a side face of the packing pressing cover away from the packing.
7. The sealing structure for a rotating shaft according to claim 5, wherein the rotating shaft at the sealing gland is made of #20 steel or more or is made of hardness 200HB or more, and copper wire-containing sealing glue is filled in the glue injection channel on the sealing gland, between the sealing gland and the packing gland, between the sealing gland and the rotating shaft and between the packing gland and the rotating shaft.
8. The sealing structure for a rotating shaft according to claim 5, wherein the diameter of the rotating shaft is larger than 200mm, and the sealing gland is filled with sealing glue containing copper wires in the glue injection channel, between the sealing gland and the packing gland, between the sealing gland and the rotating shaft, and between the packing gland and the rotating shaft.
9. The sealing structure for a rotating shaft according to claim 5, wherein the material hardness of the rotating shaft at the sealing gland is 200HB or less, and a sealing gel containing nylon fibers and graphite is filled in the sealing gland upper glue injection channel, between the sealing gland and the packing gland, between the sealing gland and the rotating shaft, and between the packing gland and the rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320120843.XU CN219452871U (en) | 2023-01-17 | 2023-01-17 | Sealing gland and sealing structure for rotary shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320120843.XU CN219452871U (en) | 2023-01-17 | 2023-01-17 | Sealing gland and sealing structure for rotary shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219452871U true CN219452871U (en) | 2023-08-01 |
Family
ID=87385346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320120843.XU Active CN219452871U (en) | 2023-01-17 | 2023-01-17 | Sealing gland and sealing structure for rotary shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219452871U (en) |
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2023
- 2023-01-17 CN CN202320120843.XU patent/CN219452871U/en active Active
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