CN217578956U - Cold-inlaid wear-resistant ceramic tuyere small sleeve - Google Patents
Cold-inlaid wear-resistant ceramic tuyere small sleeve Download PDFInfo
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- CN217578956U CN217578956U CN202220856300.XU CN202220856300U CN217578956U CN 217578956 U CN217578956 U CN 217578956U CN 202220856300 U CN202220856300 U CN 202220856300U CN 217578956 U CN217578956 U CN 217578956U
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Abstract
The utility model relates to a cold-inlaid wear-resistant ceramic tuyere small sleeve, which comprises a front cap, wherein the front part of an inner hole of the front cap is provided with an inlaid groove which is closed along the circumferential direction, the inlaid groove axially extends to the front end surface of the front cap, the inlaid groove is coaxial with the inner hole of the front cap, and the inner diameter of the inlaid groove is larger than the inner hole diameter of the front cap; and a ceramic sleeve is cold-inlaid in the inlaid groove, a plug welding hole which is through along the radial direction is formed in the side wall of the ceramic sleeve, and welding materials which are fixedly connected with the side wall of the front cap in a melting mode are filled in the plug welding hole. The utility model adopts the cold embedding mode to fix the ceramic sleeve, greatly reduces the installation difficulty of the ceramic sleeve, simplifies the structure of the ceramic sleeve and is beneficial to improving the efficiency of producing the tuyere small sleeve; the ceramic sleeve is limited by the solidification of the welding material, so that the fixing reliability of the ceramic sleeve is ensured.
Description
Technical Field
The utility model relates to a blast furnace accessory technical field especially involves the tuyere small sleeve, specifically indicates a wear-resisting ceramic tuyere small sleeve is inlayed to cold.
Background
The tuyere small sleeve is an important part for air supply of the iron-making blast furnace, and because the domestic blast furnace generally blows pulverized coal, after the tuyere small sleeve is used for a period of time, an inner hole of the tuyere small sleeve can be enlarged or abraded and leaked due to the fact that the inner hole is washed by the pulverized coal, so that the service life of the tuyere small sleeve is short, and normal work of the blast furnace is influenced.
In order to improve the wear resistance of the tuyere lower sleeve, a ceramic sleeve is usually arranged in a front cap of the small sleeve to prevent the pulverized coal from directly contacting with the side wall of the front cap. In order to improve the reliability of fixing the ceramic sleeve, the ceramic sleeve is usually fixed by means of cast-insert or melt-insert, for example, the technical scheme disclosed by the patent corresponding to the previous generation product with the patent application number of 2020212338043 adopts a structure that the ceramic bushing and the front cap are connected in a melt-insert manner, in order to realize the melt-insert connection, the ceramic bushing is arranged to be an integrally formed part comprising an outer embedding part, an inner embedding part and a wrapping part, although the wear resistance of the tuyere small sleeve is improved, the fixing operation of the ceramic bushing is complex, and the difficulty of integrally forming the ceramic bushing is high, so that the production efficiency is influenced.
Disclosure of Invention
The utility model discloses to prior art's is not enough, provide a cold wear-resisting ceramic tuyere small cover of inlaying, not only satisfied the requirement that promotes the wearability, the fixed easy operation of ceramic sheathing moreover, ceramic sheathing self simple structure is favorable to the promotion of tuyere small cover production efficiency.
The utility model is realized by the following technical scheme, and provides a cold-inlaid wear-resistant ceramic tuyere small sleeve which comprises a front cap, wherein the front part of an inner hole of the front cap is provided with an inlaid groove which is closed along the circumferential direction, the inlaid groove axially extends to the front end surface of the front cap, the inlaid groove is coaxial with the inner hole of the front cap, and the inner diameter of the inlaid groove is larger than the inner hole diameter of the front cap; and a ceramic sleeve is cold-inlaid in the inlaid groove, a plug welding hole which is through along the radial direction is formed in the side wall of the ceramic sleeve, and welding materials which are fixedly connected with the side wall of the front cap in a melting mode are filled in the plug welding hole.
This scheme inlays the groove through setting up, has realized inlaying the cold of ceramic sheathing, through set up in the plug welding hole with the molten material that welds of hood, further fixes a position ceramic sheathing after welding the material cooling, has guaranteed the fixed reliability of ceramic sheathing, inlays the groove and can process through the turning, welds the melting of material and hood and can realize through the welding, the ceramic sheathing adopts conventional cylinder structure can to the processing degree of difficulty has been reduced by a wide margin.
Preferably, a positioning ring which is fixedly connected with the side wall of the front cap in a melting mode is arranged between the front end face of the ceramic sleeve and the front end face of the front cap, the positioning ring is closed along the circumferential direction, and the rear end face of the positioning table is in contact with the front end face of the ceramic sleeve. This optimization scheme is further fixed a position the ceramic sheathing through setting up the position ring, has avoided the axial of ceramic sheathing to shift, and the holding ring can be realized through the welding equally, can form the location platform after the welding material solidifies.
As optimization, the front end face of the positioning table is flush with the front end face of the front cap, and the front end face of the positioning table and the inner hole of the positioning table are in circular arc transition. The setting of this optimization scheme avoids the locating platform to bulge out the preceding terminal surface of tuyere small jacket, has avoided simultaneously that there is the closed angle that influences the dusting between terminal surface and the locating platform hole before the locating platform.
Preferably, the plug welding holes are distributed uniformly along the circumferential direction. The arrangement of the optimized scheme further improves the fixing reliability of the ceramic sleeve.
Preferably, the inner end face of a boss formed after the welding material in the plug welding hole is solidified is flush with the inner wall of the ceramic sleeve, and the inner wall of the ceramic sleeve is flush with the inner wall of the front cap. The arrangement of the optimized scheme avoids the influence on the flow of the pulverized coal due to the arrangement of the ceramic sleeve, and ensures the smoothness of the pulverized coal channel.
Preferably, the length of the ceramic sleeve is not less than 1/3 of the total length of the front cap, and the wall thickness of the ceramic sleeve is 1/3~1/2 of the thickness of the inner wall of the front cap. The ceramic sleeve length setting of this optimization scheme has guaranteed the sufficient length with the buggy contact, and the wall thickness setting of ceramic sleeve has prolonged the life of ceramic sleeve, has avoided causing too big influence to the structural strength of hood simultaneously.
Preferably, the length between the plug welding hole and the front end face of the ceramic sleeve is 1/5 of the length of the ceramic sleeve. The plug welding hole is arranged at a position close to the pulverized coal outlet in the optimized scheme, so that the fixing effect is further improved.
The utility model has the advantages that: the ceramic sleeve is fixed in a cold embedding mode, so that the mounting difficulty of the ceramic sleeve is greatly reduced, the structure of the ceramic sleeve is simplified, and the efficiency of producing the tuyere small sleeve is improved; the ceramic sleeve is limited by the solidification of the welding material, so that the fixing reliability of the ceramic sleeve is ensured.
Drawings
FIG. 1 is a schematic structural view of the present invention;
shown in the figure:
1. the device comprises a rear seat, 2 a front cap, 3 a boss, 4 a plug welding hole, 5 a ceramic sleeve, 6 and a positioning ring.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.
The cold-inlaid wear-resistant ceramic tuyere small sleeve comprises a rear seat 1 and a front cap 2, wherein the front cap is positioned in front of the rear seat, the rear seat and the front cap are fixedly welded, and the front cap is formed by extrusion.
In order to facilitate cold inlaying of the ceramic sleeve, an inlaying groove which is closed along the circumferential direction is formed in the front portion of the inner hole of the front cap, the inlaying groove is formed by turning, the inlaying groove axially extends to the front end face of the front cap so that the ceramic sleeve can be conveniently loaded into the front end of the front cap, the inlaying groove is coaxial with the inner hole of the front cap, and the inner diameter of the inlaying groove is larger than the inner hole diameter of the front cap.
Inlay the inslot cold-blast mosaic and have ceramic sheathing 5, ceramic sheathing 5's external diameter and the internal diameter adaptation of inlaying the groove offer on the lateral wall of ceramic sheathing along the plug welding hole 4 that radially link up, plug welding hole 4 is a plurality of, and a plurality of plug welding holes along circumference evenly distributed, plug welding downthehole packing has the welding material with preceding cap lateral wall melting rigid coupling, and welding material in the plug welding hole solidifies the back and forms boss 3, and boss 3 is full of plug welding hole, and the inner wall parallel and level of terminal surface and ceramic sheathing in the boss, the inner wall parallel and level of inner wall and the preceding cap of ceramic sheathing.
A positioning ring 6 fixedly connected with the side wall of the front cap in a melting mode is arranged between the front end face of the ceramic sleeve and the front end face of the front cap, the positioning ring 6 is closed along the circumferential direction, the rear end face of the positioning table is in contact with the front end face of the ceramic sleeve, the front end face of the positioning table is flush with the front end face of the front cap, and the front end face of the positioning table and an inner hole of the positioning table are in arc transition. During actual production, the positioning table is formed by welding, welding materials and the front cap are fused into a whole during welding, and the positioning table is formed after the welding materials are solidified.
In order to ensure the wear-resistant effect and the structural strength of the front cap, the length of the ceramic sleeve along the axial direction is not less than 1/3 of the total length of the front cap along the axial direction, the wall thickness of the ceramic sleeve is 1/3~1/2 of the thickness of the inner wall of the front cap, and the length between the plug welding hole and the front end face of the ceramic sleeve is 1/5 of the length of the ceramic sleeve. The excircle of the ceramic sleeve is in a straight cylinder shape, and the inner hole of the ceramic sleeve is positioned in a taper hole matched with the inclination of the air port, so that the smoothness of airflow during flowing is ensured.
During actual production, the front cap of the tuyere small sleeve is extruded and molded, then the embedding groove is processed, the diameter of the embedding groove is matched with the outer diameter of the ceramic sleeve, the ceramic sleeve is installed into the embedding groove from the front end of the front cap, welding operation is carried out on the plug welding hole and the front end of the ceramic sleeve, and the ceramic sleeve is fixed after molten welding materials are solidified during welding. The front end of the tuyere small sleeve is improved in abrasion resistance, the use performance of the tuyere small sleeve is improved, and the production difficulty is greatly reduced.
Of course, the above description is not limited to the above examples, and the technical features of the present invention that are not described in the present application can be implemented by or using the prior art, which is not described herein again; the above embodiments and drawings are only used for illustrating the technical solutions of the present invention and are not intended to limit the present invention, and the present invention has been described in detail with reference to the preferred embodiments, and those skilled in the art should understand that changes, modifications, additions or substitutions made by those skilled in the art within the spirit of the present invention should also belong to the protection scope of the claims of the present invention.
Claims (7)
1. The utility model provides a wear-resisting ceramic tuyere cover is inlayed to cold, includes preceding cap, its characterized in that: the front part of the inner hole of the front cap is provided with an embedded groove which is closed along the circumferential direction, the embedded groove axially extends to the front end surface of the front cap, the embedded groove is coaxial with the inner hole of the front cap, and the inner diameter of the embedded groove is larger than the diameter of the inner hole of the front cap; and a ceramic sleeve is cold-inlaid in the inlaid groove, a plug welding hole which is through along the radial direction is formed in the side wall of the ceramic sleeve, and welding materials which are fixedly connected with the side wall of the front cap in a melting mode are filled in the plug welding hole.
2. The cold-inlaid wear-resistant ceramic tuyere small sleeve according to claim 1, wherein: and a positioning ring which is fixedly connected with the side wall of the front cap in a melting way is arranged between the front end surface of the ceramic sleeve and the front end surface of the front cap, the positioning ring is closed along the circumferential direction, and the rear end surface of the positioning table is contacted with the front end surface of the ceramic sleeve.
3. The cold-inlaid wear-resistant ceramic tuyere small sleeve according to claim 2, characterized in that: the front end face of the positioning table is flush with the front end face of the front cap, and the front end face of the positioning table and the inner hole of the positioning table are in circular arc transition.
4. The cold-inlaid wear-resistant ceramic tuyere small sleeve according to claim 1, characterized in that: the plug welding holes are multiple and are evenly distributed along the circumferential direction.
5. The cold-inlaid wear-resistant ceramic tuyere small sleeve according to claim 4, wherein: the inner end face of a lug boss formed after welding materials in the plug welding hole are solidified is flush with the inner wall of the ceramic sleeve, and the inner wall of the ceramic sleeve is flush with the inner wall of the front cap.
6. The cold-inlaid wear-resistant ceramic tuyere small sleeve according to claim 1, characterized in that: the length of the ceramic sleeve is not less than 1/3 of the total length of the front cap, and the wall thickness of the ceramic sleeve is 1/3~1/2 of the thickness of the inner wall of the front cap.
7. The cold-inlaid wear-resistant ceramic tuyere small sleeve according to claim 1, wherein: the length between the plug welding hole and the front end face of the ceramic sleeve is 1/5 of the length of the ceramic sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220856300.XU CN217578956U (en) | 2022-04-14 | 2022-04-14 | Cold-inlaid wear-resistant ceramic tuyere small sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220856300.XU CN217578956U (en) | 2022-04-14 | 2022-04-14 | Cold-inlaid wear-resistant ceramic tuyere small sleeve |
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| Publication Number | Publication Date |
|---|---|
| CN217578956U true CN217578956U (en) | 2022-10-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220856300.XU Active CN217578956U (en) | 2022-04-14 | 2022-04-14 | Cold-inlaid wear-resistant ceramic tuyere small sleeve |
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| CN (1) | CN217578956U (en) |
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- 2022-04-14 CN CN202220856300.XU patent/CN217578956U/en active Active
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