CN217056331U - Pull rod sealing device of split labyrinth type medium-speed coal mill - Google Patents
Pull rod sealing device of split labyrinth type medium-speed coal mill Download PDFInfo
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- CN217056331U CN217056331U CN202220307408.3U CN202220307408U CN217056331U CN 217056331 U CN217056331 U CN 217056331U CN 202220307408 U CN202220307408 U CN 202220307408U CN 217056331 U CN217056331 U CN 217056331U
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- pull rod
- labyrinth
- sleeve
- sealing device
- outer sleeve
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Abstract
The utility model relates to a pull rod sealing device of a split labyrinth medium-speed coal mill, which belongs to the technical field of coal mills and comprises a labyrinth turn-back channel, wherein the labyrinth turn-back channel is sleeved outside a pull rod and is used for forming a labyrinth structure to prevent foreign matters from entering; and the fixing piece is arranged between the labyrinth type return channel and the pull rod and is used for connecting and fixing the labyrinth type return channel and the pull rod. The utility model discloses a set up the labyrinth passageway of turning back and can prevent that foreign matter such as buggy from getting into, avoid leaking from the source, reduce the passageway clearance of sealed wind simultaneously, the increase wind pressure prevents that likepowder object from getting into the pull rod sealed, adopts to realize quick installation to the telescopic mode in the open, reduces installation time, improves maintenance efficiency, and is sealed effectual, longe-lived simple reliable, changes swiftly rapidly.
Description
Technical Field
The utility model relates to a coal pulverizer technical field specifically is a run from opposite directions labyrinth medium speed pulverizer pull rod sealing device.
Background
The pull rod of the medium-speed coal mill moves up and down, left and right, and sealing is difficult. The worn pull rod seal loses the sealing function, and a large amount of sealing air leaks to pollute the environment. The pull rod needs to be replaced in time after being worn, time and labor are wasted when the pull rod is replaced in a sealing mode, the flange on the upper portion of the pull rod and the clamping sleeve are connected with the lower portion of the pull rod need to be removed, and meanwhile the pull rod needs to be lifted out in a whole mode to be replaced. The coal mill needs to be stopped for a long time to complete the replacement work, the load of a unit is influenced, and the problem is urgently solved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an open labyrinth medium speed pulverizer pull rod sealing device to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides a run from opposite directions labyrinth medium speed pulverizer pull rod sealing device, includes:
the labyrinth type return passage is sleeved outside the pull rod and is used for forming a labyrinth structure to prevent foreign matters from entering;
and the fixing piece is arranged between the labyrinth type return channel and the pull rod and is used for connecting and fixing the labyrinth type return channel and the pull rod.
As a further technical scheme of the utility model, labyrinth passageway of turning back includes:
the outer sleeve is sleeved outside the pull rod, and one end of the outer sleeve is connected with the pull rod through a fixing piece;
the inner sleeve is sleeved between the outer sleeve and the pull rod, and one end of the inner sleeve extends to the outside of one end of the outer sleeve, which is far away from the fixing piece;
the clamping sleeve is sleeved outside the pull rod, and the clamping sleeve is arranged at one end of the inner sleeve extending out of the outer sleeve and matched with the inner sleeve.
As a further technical scheme of the utility model, form first fan palace chamber between inner skleeve and the outer sleeve, form second fan palace chamber between inner skleeve and the cutting ferrule.
As a further technical scheme, inner skleeve internally mounted has internal connection spare again.
As a further technical scheme of the utility model, the outer sleeve externally mounted has external connection spare.
Compared with the prior art, the beneficial effects of the utility model are that: foreign matters such as pulverized coal can be prevented from entering through setting up the labyrinth passageway of turning back, avoid leaking from the source, reduce the passageway clearance of sealed wind simultaneously, increase wind pressure prevents that likepowder object from getting into the pull rod sealed, adopts to realize quick installation to the mode of split inner and outer sleeve, reduces installation time, improves maintenance efficiency, and is sealed effectual, longe-lived simple reliable, changes swiftly rapidly.
Drawings
Fig. 1 is a sectional view of a split labyrinth type medium speed pulverizer drawbar sealing device.
In the figure: 1-outer sleeve, 2-fixing piece, 3-pull rod, 4-external connecting piece, 5-inner sleeve, 6-internal connecting piece and 7-cutting sleeve.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
The embodiment of the utility model provides a realize like this, the labyrinth medium speed pulverizer pull rod sealing device of run from opposite directions as shown in figure 1, include:
a labyrinth type return passage sleeved outside the pull rod 3 and used for forming a labyrinth structure to prevent foreign matters from entering;
and the fixing piece 2 is arranged between the labyrinth type return channel and the pull rod 3 and is used for connecting and fixing the labyrinth type return channel and the pull rod 3.
The utility model discloses when the in-service use, can prevent foreign matter such as buggy from getting into through setting up the labyrinth passageway of turning back, avoid leaking from the source, reduce the passageway clearance of sealed wind simultaneously, increase wind pressure prevents that likepowder object from getting into that pull rod 3 is sealed.
As shown in fig. 1, as a preferred embodiment of the present invention, the labyrinth turn-back passage includes:
the outer sleeve 1 is sleeved outside the pull rod 3, and one end of the outer sleeve 1 is connected with the pull rod 3 through a fixing piece 2;
the inner sleeve 5 is sleeved between the outer sleeve 1 and the pull rod 3, and one end of the inner sleeve 5 extends to the outside of one end, far away from the fixing piece 2, of the outer sleeve 1;
the clamping sleeve 7 is sleeved outside the pull rod 3, and the clamping sleeve 7 is arranged at one end of the inner sleeve 5 extending out of the outer sleeve 1 and matched with the inner sleeve.
In one aspect of the present embodiment, a first labyrinth cavity is formed between the inner sleeve 5 and the outer sleeve 1, a second labyrinth cavity is formed between the inner sleeve 5 and the sleeve chuck 7, for convenient connection, the outer sleeve 1 is fixed outside the pull rod 3 through the fixing member 2, the outer sleeve 1 is connected into a whole through the external connecting member 4 and is sleeved outside the inner sleeve 5, the inner sleeve 5 is also split, and is fixed into a whole through the internal connecting member 6 and is sleeved in the snap ring of the sleeve chuck 7, a first labyrinth cavity is formed between the inner sleeve 5 and the outer sleeve 1, a second labyrinth cavity is formed between the inner sleeve 5 and the sleeve chuck 7, the outer sleeve 1 is fixed on the pull rod 3 and moves integrally with the pull rod 3, the inner sleeve 5 moves horizontally and leftwards and rightwards following the pull rod 1, the inner sleeve 5 is not in contact with the pull rod 3, that is, a split inner and outer sleeve mode is adopted to realize quick installation, installation time is reduced, and maintenance efficiency is improved, the upper part of the split outer sleeve 1 is fixed on the pull rod 3, the split inner sleeve 5 is restrained on the cutting sleeve 7 by gravity and the clamping groove, the sealing effect is good, the service life is long, the operation is simple and reliable, and the replacement is rapid and rapid.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. The utility model provides a run from opposite directions labyrinth medium speed pulverizer pull rod sealing device which characterized in that includes:
the labyrinth type return passage is sleeved outside the pull rod and is used for forming a labyrinth structure to prevent foreign matters from entering;
and the fixing piece is arranged between the labyrinth type return channel and the pull rod and is used for connecting and fixing the labyrinth type return channel and the pull rod.
2. The split labyrinth medium speed coal mill pull rod sealing device of claim 1, wherein the labyrinth turn-back passage comprises:
the outer sleeve is sleeved outside the pull rod, and one end of the outer sleeve is connected with the pull rod through a fixing piece;
the inner sleeve is sleeved between the outer sleeve and the pull rod, and one end of the inner sleeve extends to the outside of one end, far away from the fixing piece, of the outer sleeve;
the clamping sleeve is sleeved outside the pull rod and is arranged at one end of the inner sleeve extending out of the outer sleeve and matched with the inner sleeve.
3. The split labyrinth medium speed coal mill pull rod sealing device according to claim 2, wherein a first labyrinth cavity is formed between the inner sleeve and the outer sleeve, and a second labyrinth cavity is formed between the inner sleeve and the cutting sleeve.
4. The split labyrinth medium speed coal pulverizer pull rod sealing device according to claim 2 or 3, wherein the inner sleeve is internally fitted with an internal connection.
5. The split labyrinth medium speed coal pulverizer pull rod sealing device according to claim 2 or 3, wherein the outer sleeve is externally mounted with an external connection piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220307408.3U CN217056331U (en) | 2022-02-16 | 2022-02-16 | Pull rod sealing device of split labyrinth type medium-speed coal mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220307408.3U CN217056331U (en) | 2022-02-16 | 2022-02-16 | Pull rod sealing device of split labyrinth type medium-speed coal mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217056331U true CN217056331U (en) | 2022-07-26 |
Family
ID=82484747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220307408.3U Active CN217056331U (en) | 2022-02-16 | 2022-02-16 | Pull rod sealing device of split labyrinth type medium-speed coal mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217056331U (en) |
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2022
- 2022-02-16 CN CN202220307408.3U patent/CN217056331U/en active Active
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