Small tuyere sleeve with ceramic sheath

Abstract

The utility model discloses a tuyere small sleeve with a ceramic sheath, which comprises a flange, an inner sleeve, an outer sleeve, a fluid director and the ceramic sheath, an inner cavity is enclosed by the outer sleeve, the inner sleeve and the flange, and the fluid director is arranged in the inner cavity; the ceramic sheath comprises an outer conical surface protective cover and / or a front end surface protective cover, and is characterized in that the outer conical surface protective cover comprises a plurality of outer conical surface ceramic protective sheets, and each outer conical surface ceramic protective sheet is arranged on the outer conical surface of the front part of the tuyere small sleeve and is fixedly connected with the outer conical surface of the front part of the tuyere small sleeve; the front end face protective cover comprises a plurality of end face ceramic protective pieces, and all the end face ceramic protective pieces are arranged on the front end face of the tuyere small sleeve and fixedly connected with the front end face of the tuyere small sleeve. The tuyere small sleeve with the ceramic sheath not only has better shock resistance, but also can save materials and production cost.

Description

Technical Field

[0001] The utility model relates to cooling equipment for an air supply system of an iron-making blast furnace, in particular to a tuyere small sleeve with a ceramic sheath. Background Art

[0002] The tuyere sleeve of a blast furnace is an important process component for air supply and coal injection in an iron-making blast furnace. The tuyere sleeve can be used to transport hot air of more than 1,000 degrees Celsius into the blast furnace. Most of the existing tuyere sleeves are made of red copper through casting and processing. They are in a high-temperature environment above 1200°C and are always subject to the high-temperature erosion of high-temperature hot air. They are often hit and eroded by molten slag above 1400°C and high-temperature materials in high-speed circulation. The working temperature at the front end of the tuyere sleeve is as high as 1500°C. Due to the impact and erosion of coke particles and furnace materials rotating at high speed in the blast furnace cyclotron area, as well as the shedding of slag skin, the front outer wall and front end of the tuyere sleeve are rapidly worn, and the life of the tuyere sleeve is sharply reduced. When the furnace condition is not smooth or the slag skin falls off, the tuyere sleeve is severely worn. The front end of the tuyere sleeve is severely worn in less than 1 month of use, resulting in damage to the tuyere sleeve and a low service life. Under normal circumstances, the tuyere sleeve should be used for more than 9 months.

[0003] In order to solve the problem that the front outer wall and the front end of the tuyere sleeve are burned, worn and corroded, resulting in a short service life, the applicant has previously applied for and disclosed an anti-collision and wear-resistant tuyere sleeve (authorization announcement number is CN214032562U, and the authorization announcement date is August 24, 2021), including a flange, an inner sleeve, an outer sleeve and a deflector, the outer sleeve is arranged on the outside of the inner sleeve, the rear end of the outer sleeve and the rear end of the inner sleeve are fixedly connected to the flange, the outer sleeve, the inner sleeve and the flange form an internal cavity, and the deflector is arranged in the internal cavity; it also includes a front protective cap, a plurality of first fixing screws, an outer protective cover and a plurality of second fixing screws; the front protective cap is provided with a plurality of first through holes, and the front end surface of the outer sleeve is provided with a plurality of first screw holes, the number of the first screw holes, the number of the second screw holes The number of the first fixing screws is the same as the number of the first through holes and corresponds to each other; the front protective cap is installed on the front end surface of the jacket, each first fixing screw is in the corresponding first screw hole, the rod of each first fixing screw passes through the corresponding first through hole, the head of each first fixing screw and the front end surface of the jacket together lock the front protective cap, and the head of each first fixing screw protrudes to the front side of the front side of the front protective cap; the outer protective cover is sleeved on the front part of the jacket, each second fixing screw is in the corresponding second screw hole, the rod of each second fixing screw passes through the corresponding second through hole, the head of each second fixing screw and the outer side wall of the front part of the jacket together lock the outer protective cover, and the head of each second fixing screw protrudes to the outside of the outer side of the outer protective cover. The front protective cap and the outer protective cover of this air outlet small cover are both integral. Although the integral front protective cap and the outer protective cover have good impact resistance, they are brittle. Once one place is damaged due to collision, it is easy to cause the entire front protective cap and the outer protective cover to break and become scrapped, and the entire front protective cap and the outer protective cover need to be replaced. Utility Model Content

[0004] The problem to be solved by the utility model is to provide a small air inlet sleeve with a ceramic sleeve, which has good impact resistance and can save materials and production costs.

[0005] In order to solve the above technical problems, the technical solutions adopted by the utility model are as follows:

[0006] A tuyere sleeve with a ceramic sleeve comprises a flange, an inner sleeve, an outer sleeve, a deflector and a ceramic sleeve, wherein the outer sleeve, the inner sleeve and the flange form an internal cavity, and the deflector is arranged in the internal cavity; the ceramic sleeve comprises an outer cone protection cover and / or a front end face protection cover, characterized in that: the outer cone protection cover comprises a plurality of outer cone ceramic protection sheets, each of which is arranged on the outer cone surface at the front of the tuyere sleeve, and each of which is fixedly connected to the outer cone surface at the front of the tuyere sleeve; the front end face protection cover comprises a plurality of end face ceramic protection sheets, each of which is arranged on the front end face of the tuyere sleeve, and each of which is fixedly connected to the front end face of the tuyere sleeve.

[0007] The plurality of outer cone surface ceramic protection sheets can be arranged in a circle (the plurality of outer cone surface ceramic protection sheets are usually arranged at equal intervals) to cover the entire outer cone surface of the front part of the tuyere sleeve. The plurality of end surface ceramic protection sheets can be arranged in a circle (the plurality of end surface ceramic protection sheets are usually arranged at equal intervals) to cover the entire front end of the tuyere sleeve.

[0008] Since the tuyere sleeve is installed horizontally from front to back, only the top of the front outer cone of the tuyere sleeve and the top of the front end face of the tuyere sleeve may be hit and damaged by the slag in the blast furnace, while the bottom of the front outer cone of the tuyere sleeve and the bottom of the front end face of the tuyere sleeve will not be hit by the slag in the blast furnace. Therefore, the outer cone protective cover can be designed as a partial protective cover, and the above-mentioned multiple outer cone ceramic protective sheets can cover the top of the front outer cone of the tuyere sleeve. Similarly, the front end face protective cover can be designed as a partial protective cover, and the above-mentioned multiple end face ceramic protective sheets can cover the top of the front end face of the tuyere sleeve. This can save materials for the outer cone protective cover and the front end face protective cover, saving production costs.

[0009] Usually, the above-mentioned tuyere sleeve can be a single-cavity tuyere sleeve or a double-cavity tuyere sleeve.

[0010] In a preferred embodiment, each of the outer cone ceramic protection sheets is bonded to the outer cone surface of the front part of the tuyere sleeve through a high temperature resistant adhesive layer. The above-mentioned high temperature resistant adhesive layer can not only connect the inner side surface of the outer cone ceramic protection sheet with the outer cone surface of the front part of the tuyere sleeve, but also serve as a buffer layer to eliminate the gap between the inner side surface of the outer cone ceramic protection sheet and the outer cone surface of the front part of the tuyere sleeve, thereby avoiding the outer cone ceramic protection sheet from being broken due to manufacturing errors or impact by materials in the furnace during use. The thickness of the above-mentioned high temperature resistant adhesive layer is generally 0.5mm-3mm.

[0011] In another preferred embodiment, at least one first through hole is provided on each of the outer cone ceramic protection sheets, and a plurality of first screw holes are provided on the outer cone surface of the front part of the tuyere sleeve, the number of the first screw holes is the same as the total number of the first through holes on all the outer cone ceramic protection sheets, and the first screw holes correspond to the first through holes one by one, and a first fixing screw is installed in each of the first screw holes, and the rod of each of the first fixing screws passes through the corresponding first through hole, and the head of each of the first fixing screws and the outer cone surface of the front part of the tuyere sleeve jointly lock the corresponding outer cone ceramic protection sheet, and the head of each of the first fixing screws protrudes to the outside of the outer side surface of the outer cone ceramic protection sheet. The corresponding outer cone ceramic protection sheet is locked on the outer cone surface of the front part of the tuyere sleeve by each of the first fixing screws, and the head of each of the first fixing screws protrudes to the outside of the outer side surface of the outer cone ceramic protection sheet, and when the iron slag in the blast furnace falls, the iron slag first falls on the head of the first fixing screw, which can prevent the outer cone ceramic protection sheet from being damaged. In a further preferred embodiment, each of the outer conical ceramic protection sheets is further bonded to the outer conical surface of the front portion of the tuyere sleeve via a high temperature resistant adhesive layer.

[0012] In a preferred embodiment, each of the end surface ceramic protection sheets is bonded to the front end surface of the tuyere sleeve via a high temperature resistant adhesive layer.

[0013] In another preferred embodiment, each of the end face ceramic protection plates is provided with at least one second through hole, and the front end face of the air outlet sleeve is provided with a plurality of second screw holes arranged at equal intervals, the number of the second screw holes is the same as the total number of the second through holes on all the end face ceramic protection plates, and the second screw holes correspond to the second through holes one by one, and a second fixing screw is installed in each second screw hole, and the rod of each second fixing screw passes through the corresponding second through hole, and the head of each second fixing screw and the front end face of the air outlet sleeve jointly lock the corresponding end face ceramic protection plate, and the head of each second fixing screw protrudes to the front side of the front side of the end face ceramic protection plate. The corresponding end face ceramic protection sheet is locked on the front end face of the outer sleeve of the tuyere sleeve by each second fixing screw, and the head of each second fixing screw protrudes to the front side of the front side of the end face ceramic protection sheet. When the slag in the blast furnace falls, the slag first falls on the head of the second fixing screw, which can prevent the end face ceramic protection sheet from being damaged. In addition, when placing the tuyere sleeve, if the front end of the tuyere sleeve is placed downward, the heads of each second fixing screw at the front end of the tuyere sleeve can support the tuyere sleeve, preventing the front end face of the end face ceramic protection sheet at the front end of the tuyere sleeve from directly contacting the ground and causing damage or friction scratches. In a further preferred embodiment, each of the end face ceramic protection sheets is also bonded to the front end face of the tuyere sleeve by a high temperature resistant adhesive layer.

[0014] In a preferred embodiment, the inner side surface of the outer conical ceramic protection plate is a curved surface or a flat surface.

[0015] In a preferred embodiment, the thickness of the outer cone ceramic protection sheet and the end surface ceramic protection sheet are both 5 mm-30 mm.

[0016] In a preferred embodiment, a positioning groove is provided on the outer conical surface of the front part of the tuyere sleeve, and a convex block matching the positioning groove is provided on the front part of the inner side surface of the outer conical ceramic protection sheet, and the convex block is located in the positioning groove. The front part of the inner side surface of the outer conical ceramic protection sheet is arranged in the positioning groove, so that the outer conical ceramic protection sheet and the outer sleeve can be more closely combined, and the structure of the tuyere sleeve can be kept compact.

[0017] In a preferred solution, when the tuyere sleeve is only provided with an outer conical protective cover, the front end surface of the outer conical ceramic protective sheet is flush with the front end surface of the tuyere sleeve.

[0018] In a preferred solution, when the tuyere sleeve is only provided with a front end face protection cover, the outer end face of the end face ceramic protection sheet is flush with the outer conical surface of the front end of the tuyere sleeve.

[0019] In the first preferred embodiment, when the tuyere sleeve is provided with an outer cone protection cover and a front end face protection cover, the outer end face of the end face ceramic protection sheet is flush with the outer cone surface of the front end of the tuyere sleeve, and the front end face of the outer cone ceramic protection sheet is flush with the front end face of the tuyere sleeve.

[0020] In the second preferred solution, when the tuyere sleeve is provided with an outer cone protection cover and a front end protection cover, the outer end face of the end face ceramic protection sheet is flush with the outer cone surface of the front end of the tuyere sleeve, and the front end face of the outer cone surface ceramic protection sheet is flush with the front end face of the end face ceramic protection sheet. More preferably, the outer end face of the end face ceramic protection sheet is connected to the inner side face of the outer cone surface ceramic protection sheet through a high temperature resistant adhesive layer.

[0021] In the third preferred solution, when the tuyere sleeve is provided with an outer cone protection cover and a front face protection cover, the outer end face of the end face ceramic protection sheet is flush with the outer cone surface of the front end of the tuyere sleeve, and the front end face of the outer cone surface ceramic protection sheet is located in front of the front end of the tuyere sleeve and in the rear of the front end face of the end face ceramic protection sheet. More preferably, the outer end face of the end face ceramic protection sheet is connected to the inner side of the outer cone surface ceramic protection sheet through a high temperature resistant adhesive layer.

[0022] In the fourth preferred solution, when the tuyere sleeve is provided with an outer cone protection cover and a front face protection cover, the front face of the outer cone ceramic protection sheet is flush with the front face of the tuyere sleeve, and the outer end face of the end face ceramic protection sheet is flush with the outer side face of the outer cone ceramic protection sheet. More preferably, the rear end face of the end face ceramic protection sheet is connected to the front face of the outer cone ceramic protection sheet through a high temperature resistant adhesive layer.

[0023] In the fifth preferred embodiment, when the tuyere sleeve is provided with an outer cone protection cover and a front end face protection cover, the front end face of the outer cone ceramic protection sheet is flush with the front end face of the tuyere sleeve, and the outer end face of the end face ceramic protection sheet is located outside the outer cone face of the front end of the tuyere sleeve and inside the outer side face of the outer cone ceramic protection sheet. More preferably, the rear end face of the end face ceramic protection sheet is connected to the front end face of the outer cone ceramic protection sheet through a high temperature resistant adhesive layer.

[0024] Compared with the prior art, the utility model has the following advantages:

[0025] The utility model arranges multiple outer cone ceramic protection sheets into an outer cone protection cover, and arranges multiple end face ceramic protection sheets into a front face protection cover. The dispersed outer cone ceramic protection sheets and end face ceramic protection sheets are less brittle. If any outer cone ceramic protection sheet or end face ceramic protection sheet is damaged due to collision, only the damaged outer cone ceramic protection sheet or end face ceramic protection sheet needs to be replaced, and there is no need to replace the entire outer cone protection cover or front face protection cover, thereby saving materials of the ceramic sheath and saving production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0027] Figure 2 yes Figure 1 Front view of the middle ceramic sheath;

[0028] Figure 3 It is a structural schematic diagram of Embodiment 2 of the present utility model;

[0029] Figure 4 yes Figure 3 Front view of the middle ceramic sheath;

[0030] Figure 5 It is a structural schematic diagram of Embodiment 3 of the present utility model;

[0031] Figure 6 It is a structural schematic diagram of Embodiment 4 of the present utility model;

[0032] Figure 7 It is a structural schematic diagram of Embodiment 5 of the present utility model;

[0033] Figure 8 It is a structural schematic diagram of Embodiment 6 of the present utility model;

[0034] Fig. 9 It is a structural schematic diagram of Embodiment 7 of the present utility model;

[0035] Fig.10 It is a schematic diagram of the structure of Embodiment 8 of the present utility model;

[0036] Fig.11 It is a structural schematic diagram of Embodiment 9 of the present utility model;

[0037] Fig.12 It is a schematic diagram of the structure of Embodiment 10 of the present utility model;

[0038] Fig.13 It is a schematic diagram of the structure of Embodiment 11 of the present utility model;

[0039] Fig.14 It is a schematic diagram of the structure of Embodiment 12 of the present utility model;

[0040] Fig.15 It is a structural schematic diagram of embodiment 13 of the utility model. DETAILED DESCRIPTION

[0041] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0042] Example 1

[0043] like Figure 1-2 As shown, the tuyere sleeve with a ceramic sleeve in this embodiment includes a flange 1, an inner sleeve 2, an outer sleeve 3, a deflector 4 and a ceramic sleeve 5. The outer sleeve 3, the inner sleeve 2 and the flange 1 form an internal cavity 6, and the deflector 4 is arranged in the internal cavity 6; the ceramic sleeve 5 includes an outer cone protection cover 51 and a front end face protection cover 52, the outer cone protection cover 51 includes a plurality of outer cone ceramic protection sheets 511, each of which is arranged on the outer cone surface 31 at the front of the tuyere sleeve, and each of the outer cone ceramic protection sheets 511 is fixedly connected to the outer cone surface 31 at the front of the tuyere sleeve; the front end face protection cover 52 includes a plurality of end face ceramic protection sheets 521, each of which is arranged on the front end face 32 of the tuyere sleeve, and each of the end face ceramic protection sheets 521 is fixedly connected to the front end face 32 of the tuyere sleeve.

[0044] The plurality of outer cone surface ceramic protection sheets 511 can be arranged in a circle (the plurality of outer cone surface ceramic protection sheets 511 are usually arranged at equal intervals) to cover the entire outer cone surface 31 at the front of the tuyere sleeve. The plurality of end surface ceramic protection sheets 521 can be arranged in a circle (the plurality of end surface ceramic protection sheets 521 are usually arranged at equal intervals) to cover the entire front end of the tuyere sleeve.

[0045] Each of the outer cone ceramic protection sheets 511 is bonded to the outer cone surface 31 of the front part of the tuyere sleeve through a high temperature resistant adhesive layer 7. The above-mentioned high temperature resistant adhesive layer 7 can not only play the role of connecting the inner side surface of the outer cone ceramic protection sheet 511 and the outer cone surface 31 of the front part of the tuyere sleeve, but also serve as a buffer layer to eliminate the gap between the inner side surface of the outer cone ceramic protection sheet 511 and the outer cone surface 31 of the front part of the tuyere sleeve, so as to avoid the outer cone ceramic protection sheet 511 from being broken due to manufacturing errors or impact by materials in the furnace during use. The thickness of the above-mentioned high temperature resistant adhesive layer 7 is generally 0.5mm-3mm.

[0046] Each of the end surface ceramic protection sheets 521 is bonded to the front end surface 32 of the tuyere sleeve via a high temperature resistant adhesive layer 7 .

[0047] In the case where the tuyere sleeve is provided with an outer cone protection cover 51 and a front face protection cover 52, the outer end face of the end face ceramic protection sheet 521 is flush with the outer cone face of the front end of the tuyere sleeve, and the front end face of the outer cone ceramic protection sheet 511 is flush with the front end face of the end face ceramic protection sheet 521. More preferably, the outer end face of the end face ceramic protection sheet 521 is connected to the inner side face of the outer cone ceramic protection sheet 511 through a high temperature resistant adhesive layer 7.

[0048] The inner side surface of the outer conical ceramic protection plate 511 is a curved surface.

[0049] The thickness of the outer cone ceramic protection sheet 511 and the end surface ceramic protection sheet 521 are both 10 mm.

[0050] Usually, the above-mentioned tuyere sleeve is a single-cavity tuyere sleeve.

[0051] Example 2

[0052] like Figure 3-4 As shown, the difference between the tuyere sleeve with ceramic sheath in this embodiment and that in embodiment 1 is as follows:

[0053] Since the tuyere sleeve is installed horizontally from front to back, only the top of the outer cone surface 31 of the front part of the tuyere sleeve and the top of the front end face 32 of the tuyere sleeve may be hit and damaged by the iron slag in the blast furnace, while the bottom of the outer cone surface 31 of the front part of the tuyere sleeve and the bottom of the front end face 32 of the tuyere sleeve will not be hit by the iron slag in the blast furnace. Therefore, the outer cone surface protection cover 51 can be designed as a partial protection cover, and the above-mentioned multiple outer cone surface ceramic protection sheets 511 can cover the top of the outer cone surface 31 of the front part of the tuyere sleeve. Similarly, the front end face protection cover 52 can be designed as a partial protection cover, and the above-mentioned multiple end face ceramic protection sheets 521 can cover the top of the front end face 32 of the tuyere sleeve. In this way, the materials of the outer cone surface protection cover 51 and the front end face protection cover 52 can be saved, and the production cost can be saved.

[0054] Example 3

[0055] like Figure 5 As shown, the difference between the tuyere sleeve with ceramic sheath in this embodiment and that in embodiment 1 is as follows:

[0056] In the case that the tuyere sleeve is only provided with the outer conical protective cover 51 , the front end surface of the outer conical ceramic protective sheet 511 is flush with the front end surface 32 of the tuyere sleeve.

[0057] Example 4

[0058] like Figure 6 As shown, the difference between the tuyere sleeve with ceramic sheath in this embodiment and that in embodiment 1 is as follows:

[0059] In the case that the tuyere sleeve is only provided with the front end face protection cover 52, the outer end face of the end face ceramic protection sheet 521 is flush with the outer conical surface of the front end of the tuyere sleeve.

[0060] Example 5

[0061] like Figure 7 As shown, the difference between the tuyere sleeve with ceramic sheath in this embodiment and that in embodiment 1 is as follows:

[0062] A positioning groove 311 is provided on the outer conical surface 31 at the front of the tuyere sleeve, and a convex block 512 matching the positioning groove 311 is provided on the front of the inner side surface of the outer conical ceramic protection sheet 511, and the convex block 512 is located in the positioning groove 311. The front of the inner side surface of the outer conical ceramic protection sheet 511 is arranged in the positioning groove 311, so that the outer conical ceramic protection sheet 511 can be more closely combined with the outer sleeve 3, and the structure of the tuyere sleeve can be kept compact.

[0063] The front end surface of the outer conical ceramic protection sheet 511 is flush with the front end surface 32 of the tuyere sleeve.

[0064] Example 6

[0065] like Figure 8 As shown, the difference between the tuyere sleeve with ceramic sheath in this embodiment and that in embodiment 1 is as follows:

[0066] A positioning groove 311 is provided on the outer conical surface 31 at the front of the tuyere sleeve, and a convex block 512 matching the positioning groove 311 is provided on the front of the inner side surface of the outer conical ceramic protection sheet 511, and the convex block 512 is located in the positioning groove 311. The front of the inner side surface of the outer conical ceramic protection sheet 511 is arranged in the positioning groove 311, so that the outer conical ceramic protection sheet 511 can be more closely combined with the outer sleeve 3, and the structure of the tuyere sleeve can be kept compact.

[0067] In the case where the tuyere sleeve is provided with an outer cone protection cover 51 and a front face protection cover 52, the outer end face of the end face ceramic protection sheet 521 is flush with the outer cone face of the front end of the tuyere sleeve, and the front end face of the outer cone ceramic protection sheet 511 is flush with the front end face of the end face ceramic protection sheet 521. More preferably, the outer end face of the end face ceramic protection sheet 521 is connected to the inner side face of the outer cone ceramic protection sheet 511 through a high temperature resistant adhesive layer 7.

[0068] Example 7

[0069] like Fig. 9 As shown, the difference between the tuyere sleeve with ceramic sheath in this embodiment and that in embodiment 1 is as follows:

[0070] Each of the outer conical ceramic protection sheets 511 is provided with at least one first through hole 513, and a plurality of first screw holes 312 are provided on the outer conical surface 31 of the front part of the air outlet sleeve. The number of the first screw holes 312 is the same as the total number of the first through holes 513 on all the outer conical ceramic protection sheets 511, and the first screw holes 312 correspond to the first through holes 513 one by one. A first fixing screw 313 is installed in each of the first screw holes 312, and the rod of each first fixing screw 313 passes through the corresponding first through hole 513. The head of each first fixing screw 313 and the outer conical surface 31 of the front part of the air outlet sleeve jointly lock the corresponding outer conical ceramic protection sheet 511, and the head of each first fixing screw 313 protrudes to the outside of the outer side surface of the outer conical ceramic protection sheet 511. The corresponding outer cone ceramic protection sheet 511 is locked on the outer cone 31 of the front part of the tuyere sleeve by each first fixing screw 313, and the head of each first fixing screw 313 protrudes to the outside of the outer side surface of the outer cone ceramic protection sheet 511. When the slag in the blast furnace falls, the slag first falls on the head of the first fixing screw 313, which can prevent the outer cone ceramic protection sheet 511 from being damaged.

[0071] Example 8

[0072] like Fig.10 As shown, the difference between the tuyere sleeve with ceramic sheath in this embodiment and that in embodiment 1 is as follows:

[0073] Each of the outer conical ceramic protection sheets 511 is provided with at least one first through hole 513, and a plurality of first screw holes 312 are provided on the outer conical surface 31 of the front part of the air outlet sleeve. The number of the first screw holes 312 is the same as the total number of the first through holes 513 on all the outer conical ceramic protection sheets 511, and the first screw holes 312 correspond to the first through holes 513 one by one. A first fixing screw 313 is installed in each of the first screw holes 312, and the rod of each first fixing screw 313 passes through the corresponding first through hole 513. The head of each first fixing screw 313 and the outer conical surface 31 of the front part of the air outlet sleeve jointly lock the corresponding outer conical ceramic protection sheet 511, and the head of each first fixing screw 313 protrudes to the outside of the outer side surface of the outer conical ceramic protection sheet 511. The corresponding outer cone ceramic protection sheet 511 is locked on the outer cone 31 of the front part of the tuyere sleeve by each first fixing screw 313, and the head of each first fixing screw 313 protrudes to the outside of the outer side surface of the outer cone ceramic protection sheet 511. When the slag in the blast furnace falls, the slag first falls on the head of the first fixing screw 313, which can prevent the outer cone ceramic protection sheet 511 from being damaged.

[0074] Each of the outer conical ceramic protection sheets 511 is also bonded to the outer conical surface 31 at the front of the tuyere sleeve via a high temperature resistant adhesive layer 7 .

[0075] Example 9

[0076] like Fig.11 As shown, the difference between the tuyere sleeve with ceramic sheath in this embodiment and that in embodiment 1 is as follows:

[0077] Each of the outer conical ceramic protection sheets 511 is provided with at least one first through hole 513, and a plurality of first screw holes 312 are provided on the outer conical surface 31 of the front part of the air outlet sleeve. The number of the first screw holes 312 is the same as the total number of the first through holes 513 on all the outer conical ceramic protection sheets 511, and the first screw holes 312 correspond to the first through holes 513 one by one. A first fixing screw 313 is installed in each of the first screw holes 312, and the rod of each first fixing screw 313 passes through the corresponding first through hole 513. The head of each first fixing screw 313 and the outer conical surface 31 of the front part of the air outlet sleeve jointly lock the corresponding outer conical ceramic protection sheet 511, and the head of each first fixing screw 313 protrudes to the outside of the outer side surface of the outer conical ceramic protection sheet 511. The corresponding outer cone ceramic protection sheet 511 is locked on the outer cone 31 of the front part of the tuyere sleeve by each first fixing screw 313, and the head of each first fixing screw 313 protrudes to the outside of the outer side surface of the outer cone ceramic protection sheet 511. When the slag in the blast furnace falls, the slag first falls on the head of the first fixing screw 313, which can prevent the outer cone ceramic protection sheet 511 from being damaged.

[0078] Each of the outer conical ceramic protection sheets 511 is also bonded to the outer conical surface 31 at the front of the tuyere sleeve via a high temperature resistant adhesive layer 7 .

[0079] Each of the end face ceramic protection sheets 521 is provided with at least one second through hole 522, and the front end face 32 of the air outlet sleeve is provided with a plurality of second screw holes 321 arranged at equal intervals, the number of the second screw holes 321 is the same as the total number of the second through holes 522 on all the end face ceramic protection sheets 521, and the second screw holes 321 correspond to the second through holes 522 one by one, and each second screw hole 321 is installed with a second fixing screw 322, and the rod of each second fixing screw 322 passes through the corresponding second through hole 522, and the head of each second fixing screw 322 and the front end face 32 of the air outlet sleeve jointly lock the corresponding end face ceramic protection sheet 521, and the head of each second fixing screw 322 protrudes to the front side of the front side of the end face ceramic protection sheet 521. The corresponding end face ceramic protection sheet 521 is locked on the front end face of the outer sleeve 3 of the tuyere sleeve by each second fixing screw 322, and the head of each second fixing screw 322 protrudes to the front side of the front side of the end face ceramic protection sheet 521. When the slag in the blast furnace falls, the slag first falls on the head of the second fixing screw 322, which can prevent the end face ceramic protection sheet 521 from being damaged. In addition, when placing the tuyere sleeve, if the front end of the tuyere sleeve is placed downward, the heads of each second fixing screw 322 at the front end of the tuyere sleeve can support the tuyere sleeve, which prevents the front end face of the end face ceramic protection sheet 521 at the front end of the tuyere sleeve from directly contacting the ground and causing damage or friction scratches.

[0080] Each of the end surface ceramic protection sheets 521 is also bonded to the front end surface 32 of the tuyere sleeve via a high temperature resistant adhesive layer 7 .

[0081] The above-mentioned tuyere sleeve is a double-cavity tuyere sleeve.

[0082] Example 10

[0083] like Fig.12 As shown, the difference between the tuyere sleeve with ceramic sheath in this embodiment and that in embodiment 1 is as follows:

[0084] When the tuyere sleeve is provided with an outer cone protection cover 51 and a front face protection cover 52, the outer end face of the end face ceramic protection sheet 521 is flush with the outer cone face at the front end of the tuyere sleeve, and the front end face of the outer cone ceramic protection sheet 511 is flush with the front end face 32 of the tuyere sleeve.

[0085] Embodiment 11

[0086] like Fig.13 As shown, the difference between the tuyere sleeve with ceramic sheath in this embodiment and that in embodiment 1 is as follows:

[0087] In the case where the tuyere sleeve is provided with an outer cone protection cover 51 and a front face protection cover 52, the outer end face of the end face ceramic protection sheet 521 is flush with the outer cone face of the front end of the tuyere sleeve, and the front end face of the outer cone ceramic protection sheet 511 is located in front of the front end face 32 of the tuyere sleeve and in the rear of the front end face of the end face ceramic protection sheet 521. More preferably, the outer end face of the end face ceramic protection sheet 521 is connected to the inner side of the outer cone ceramic protection sheet 511 through a high temperature resistant adhesive layer 7.

[0088] Example 12

[0089] like Fig.14 As shown, the difference between the tuyere sleeve with ceramic sheath in this embodiment and that in embodiment 1 is as follows:

[0090] In the case where the tuyere sleeve is provided with an outer cone protection cover 51 and a front face protection cover 52, the front face of the outer cone ceramic protection sheet 511 is flush with the front face 32 of the tuyere sleeve, and the outer end face of the end face ceramic protection sheet 521 is flush with the outer side face of the outer cone ceramic protection sheet 511. More preferably, the rear end face of the end face ceramic protection sheet 521 is connected to the front face of the outer cone ceramic protection sheet 511 through a high temperature resistant adhesive layer 7.

[0091] Embodiment 13

[0092] like Fig.15 As shown, the difference between the tuyere sleeve with ceramic sheath in this embodiment and that in embodiment 1 is as follows:

[0093] In the case where the tuyere sleeve is provided with an outer cone protection cover 51 and a front face protection cover 52, the front face of the outer cone ceramic protection sheet 511 is flush with the front face 32 of the tuyere sleeve, and the outer end face of the end face ceramic protection sheet 521 is located outside the outer cone surface of the front end of the tuyere sleeve and inside the outer side face of the outer cone ceramic protection sheet 511. More preferably, the rear end face of the end face ceramic protection sheet 521 is connected to the front face of the outer cone ceramic protection sheet 511 through a high temperature resistant adhesive layer 7.

[0094] In addition, it should be noted that the names of the various parts of the specific embodiments described in this specification may be different, and any equivalent or simple changes made based on the structure, features and principles described in the utility model patent concept are included in the protection scope of the utility model patent. The technical personnel of the technical field to which the utility model belongs can make various modifications or supplements to the specific embodiments described or replace them in a similar manner, as long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims, they should all fall within the protection scope of the utility model.

Claims

1. A tuyere sleeve with a ceramic sleeve, comprising a flange, an inner sleeve, an outer sleeve, a deflector and a ceramic sleeve, wherein the outer sleeve, the inner sleeve and the flange form an internal cavity, and the deflector is arranged in the internal cavity; the ceramic sleeve comprises an outer cone protective cover and / or a front face protective cover, characterized in that: The outer cone protection cover includes multiple outer cone ceramic protection plates, each of which is arranged on the outer cone surface of the front part of the tuyere sleeve, and each outer cone ceramic protection plate is fixedly connected to the outer cone surface of the front part of the tuyere sleeve; the front end face protection cover includes multiple end face ceramic protection plates, each of which is arranged on the front end face of the tuyere sleeve, and each end face ceramic protection plate is fixedly connected to the front end face of the tuyere sleeve.

2. The tuyere sleeve with ceramic sheath according to claim 1, characterized in that: Each of the outer cone-shaped ceramic protection sheets is bonded to the outer cone-shaped surface at the front of the air inlet sleeve via a high-temperature resistant adhesive layer.

3. The tuyere sleeve with ceramic sheath according to claim 1, characterized in that: Each of the outer conical ceramic protection sheets is provided with at least one first through hole, and the outer conical surface of the front part of the air outlet sleeve is provided with multiple first screw holes, the number of the first screw holes is the same as the total number of the first through holes on all the outer conical ceramic protection sheets, and the first screw holes correspond to the first through holes one by one, and a first fixing screw is installed in each first screw hole, and the rod of each first fixing screw passes through the corresponding first through hole, and the head of each first fixing screw and the outer conical surface of the front part of the air outlet sleeve jointly lock the corresponding outer conical ceramic protection sheet, and the head of each first fixing screw protrudes to the outside of the outer side surface of the outer conical ceramic protection sheet.

4. The tuyere sleeve with ceramic sheath according to claim 3, characterized in that: Each of the outer cone-shaped ceramic protection sheets is also bonded to the outer cone-shaped surface of the front part of the tuyere sleeve via a high temperature resistant adhesive layer.

5. The tuyere sleeve with ceramic sheath according to claim 1, characterized in that: Each of the end surface ceramic protection sheets is bonded to the front end surface of the tuyere sleeve via a high temperature resistant adhesive layer.

6. The tuyere sleeve with ceramic sheath according to claim 1, characterized in that: Each of the end face ceramic protection sheets is provided with at least one second through hole, and the front end face of the air outlet sleeve is provided with a plurality of second screw holes arranged at equal intervals, the number of the second screw holes is the same as the total number of the second through holes on all the end face ceramic protection sheets, and the second screw holes correspond to the second through holes one by one, and a second fixing screw is installed in each second screw hole, and the rod of each second fixing screw passes through the corresponding second through hole, and the head of each second fixing screw and the front end face of the air outlet sleeve jointly lock the corresponding end face ceramic protection sheet, and the head of each second fixing screw protrudes to the front side of the front side of the end face ceramic protection sheet.

7. The tuyere sleeve with ceramic sheath according to claim 6, characterized in that: Each of the end surface ceramic protection sheets is also bonded to the front end surface of the tuyere sleeve via a high temperature resistant adhesive layer.

8. The tuyere sleeve with ceramic sheath according to claim 1, characterized in that: The inner side surface of the outer conical ceramic protection plate is a curved surface or a flat surface; The thickness of the outer cone ceramic protection sheet and the end surface ceramic protection sheet are both 5mm-30mm; A positioning groove is arranged on the outer cone surface at the front of the air outlet sleeve, and a convex block matching the positioning groove is arranged on the front of the inner side surface of the outer cone ceramic protection plate, and the convex block is located in the positioning groove.

9. The tuyere sleeve with ceramic sheath according to claim 1, characterized in that: In the case where the tuyere sleeve is only provided with an outer conical protective cover, the front end surface of the outer conical ceramic protective sheet is flush with the front end surface of the tuyere sleeve; Alternatively, when the tuyere sleeve is only provided with a front end face protection cover, the outer end face of the end face ceramic protection sheet is flush with the outer conical surface of the front end of the tuyere sleeve.

10. The tuyere sleeve with ceramic sheath according to claim 1, characterized in that: In the case where the tuyere sleeve is provided with an outer conical protective cover and a front face protective cover, the outer end face of the end face ceramic protective sheet is flush with the outer conical surface of the front end of the tuyere sleeve, and the front face of the outer conical ceramic protective sheet is flush with the front face of the tuyere sleeve; Alternatively, when the tuyere sleeve is provided with an outer cone protection cover and a front end face protection cover, the outer end face of the end face ceramic protection sheet is flush with the outer cone surface of the front end of the tuyere sleeve, and the front end face of the outer cone surface ceramic protection sheet is flush with the front end face of the end face ceramic protection sheet; the outer end face of the end face ceramic protection sheet is connected to the inner side face of the outer cone surface ceramic protection sheet through a high temperature resistant adhesive layer; Alternatively, when the tuyere sleeve is provided with an outer cone protection cover and a front end face protection cover, the outer end face of the end face ceramic protection sheet is flush with the outer cone face of the front end of the tuyere sleeve, and the front end face of the outer cone surface ceramic protection sheet is located on the front side of the front end of the tuyere sleeve and on the rear side of the front end face of the end face ceramic protection sheet; the outer end face of the end face ceramic protection sheet is connected to the inner side face of the outer cone surface ceramic protection sheet through a high temperature resistant adhesive layer; Alternatively, when the tuyere sleeve is provided with an outer cone protection cover and a front end face protection cover, the front end face of the outer cone ceramic protection sheet is flush with the front end face of the tuyere sleeve, and the outer end face of the end face ceramic protection sheet is flush with the outer side face of the outer cone ceramic protection sheet; the rear end face of the end face ceramic protection sheet is connected to the front end face of the outer cone ceramic protection sheet through a high temperature resistant adhesive layer; Alternatively, when the tuyere sleeve is provided with an outer cone protection cover and a front end face protection cover, the front end face of the outer cone ceramic protection plate is flush with the front end face of the tuyere sleeve, and the outer end face of the end face ceramic protection plate is located outside the outer cone surface at the front end of the tuyere sleeve and inside the outer side face of the outer cone ceramic protection plate; the rear end face of the end face ceramic protection plate is connected to the front end face of the outer cone ceramic protection plate through a high temperature resistant adhesive layer.

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