CN210625310U - Wear-resistant flame holding cover for burner for rotary kiln - Google Patents
Wear-resistant flame holding cover for burner for rotary kiln Download PDFInfo
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- CN210625310U CN210625310U CN201921506702.1U CN201921506702U CN210625310U CN 210625310 U CN210625310 U CN 210625310U CN 201921506702 U CN201921506702 U CN 201921506702U CN 210625310 U CN210625310 U CN 210625310U
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- wear
- resistant
- flame
- rotary kiln
- axial flow
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Abstract
The utility model relates to a rotary kiln trade thermotechnical equipment technical field specifically is a wear-resisting flame holding cover for rotary kiln combustor. The utility model discloses at the inside cavity ring that sets up of pouring material protective layer and pouring material baffle handing-over department, the flame hood urceolus is held together to the heat-resistant steel of installation on the cavity ring, and the heat-resistant steel holds together the wear-resisting barrel of flame hood urceolus front end fixed mounting pottery, and the wear-resisting barrel of pottery one side sets up axial fan urceolus draw-in groove, and axial fan urceolus draw-in groove links together axial fan urceolus and the wear-resisting barrel of pottery, the outer marginal parallel and level of the interior edge of the. The utility model discloses a following the erosion and washing away of the particle material that the axial flow wind blowout or circle round is very little to the wearing and tearing of ceramic inner wall, has guaranteed the life extension of holding together the flame cover, and the smooth characteristic of ceramic inner wall has guaranteed again that the good flame effect of holding together the flame cover simultaneously.
Description
Technical Field
The utility model relates to a rotary kiln trade thermotechnical equipment technical field specifically is a wear-resisting flame holding cover for rotary kiln combustor.
Background
From the first generation of burners for cement rotary kilns, to date, more and more burners are applied to the production of a rotary kiln process, more and more industries are applied, such as cement, pellet, lime, chromium salt, lithium salt, strontium salt, ferronickel reduction industry and the like, along with the change of fuel energy supply conditions and the gradual emphasis of people on environmental protection, the problems to be solved by the rotary kiln burners are changed, higher technical requirements on the slender, regular and adjustable flame shape of the burners are provided, the flame holding hood is generally adopted to hold flame in a mode of ensuring the means, under the high-temperature environment, the hardness of heat-resistant steel under the high-temperature condition can be greatly reduced due to the red hardness of metal, the high-speed direct washing of high-speed pulverized coal particles or the high-speed washing of backflow dust can not be resisted, the flame holding hood can be seriously worn, and the flame holding effect can be caused, the flame deformation is serious, and the better stable performance of the thermal state of the rotary kiln is influenced.
The front structure of the existing rotary kiln combustor flame collecting cover mainly has two types: the other is the straight wind with the wedge-shaped square hole outlet, and the cross section of the air outlet can be adjusted by arranging the straight wind with the circular hole outlet on the outermost layer of each channel of the combustor. The front end of the burner head of the two structures is connected with a flame holding cover for holding the formed flame. Application practices show that the heat-resistant steel flame holding covers adopted by the two structures are easy to wear out of grooves or penetrate through the situation because the flame holding covers cannot be washed by powder at high temperature, so that the burner with a round hole-shaped outlet cannot obtain expected use effect, the service life of the burner of the rotary kiln is short, the shape of flame cannot be regularly formed, the shape of flame cannot well adapt to the shape of the kiln, the flame is rough, short, scattered or irregularly deformed, the combustion mixing effect is poor, the environmental protection performance cannot reach the standard, and the normal performance of the efficiency of various rotary kilns is influenced.
Disclosure of Invention
For overcoming current flame holding cover heat resistant steel wear-resisting not enough under the high temperature, the utility model aims to provide a flame holding cover that is high temperature resistant stand wear and tear for multichannel combustor to the wearing and tearing and the deformation of flame holding cover have been delayed.
In order to realize the purpose of the utility model, the technical proposal of the utility model is that: the utility model provides a wear-resisting flame hood that holds together for combustor for rotary kiln, holds together flame hood urceolus, the wear-resisting barrel of pottery, axial flow wind urceolus draw-in groove, axial flow wind urceolus, castable protective layer including castable baffle, heat-resistant steel, and the castable baffle sets up at castable protective layer front end, its characterized in that: the inner edge of the ceramic wear-resistant cylinder is flush with the outermost edge of an outlet of an axial flow air hole.
According to the wear-resistant flame holding cover for the burner for the rotary kiln, the wear-resistant flame holding cover is characterized in that: the axial flow air inner cylinder is arranged on the inner side of the axial flow air outer cylinder.
According to the wear-resistant flame holding cover for the burner for the rotary kiln, the wear-resistant flame holding cover is characterized in that: the axial flow air outer barrel clamping groove is of a rotary clamping groove structure.
According to the wear-resistant flame holding cover for the burner for the rotary kiln, the wear-resistant flame holding cover is characterized in that: the heat-resistant steel flame gathering cover outer barrel and the axial flow air outer barrel clamping groove are made of heat-resistant steel.
According to the wear-resistant flame holding cover for the burner for the rotary kiln, the wear-resistant flame holding cover is characterized in that: the ceramic wear-resistant cylinder is a powder ceramic forming piece.
According to the wear-resistant flame holding cover for the burner for the rotary kiln, the wear-resistant flame holding cover is characterized in that: the assembly clearance between the ceramic wear-resistant cylinder and the heat-resistant steel flame gathering cover outer cylinder is 0.2mm to 0.8 mm.
According to the wear-resistant flame holding cover for the burner for the rotary kiln, the wear-resistant flame holding cover is characterized in that: the assembly clearance between the ceramic wear-resistant cylinder and the axial flow air outer cylinder clamping groove is 0.2mm to 0.8 mm.
Compared with the prior art, the utility model, the high-speed injection coal grain or the dust grain of burning ware head, because of porcelainous high temperature wearability, greatly delayed the wearing and tearing and the deformation of holding together the flame cover, can obtain the strong and powerful long and thin flame steadily, cooperate each wind channel appropriate amount of wind distribution to make flame heating power intensity high, the liftout ability reinforce, and the life of extension shower nozzle. The utility model discloses an even also can guarantee fine flame holding cover wearability when burning the thick buggy of fineness. The utility model discloses select high temperature resistant stand wear and tear's ceramic material for use, install in the combustor head through reasonable structure, play and draw in and the effect of shaping burning flame in, because its high temperature resistant and stand wear and tear characteristic that has, can greatly prolong its life and bring good result of use
Drawings
Fig. 1 is a schematic view of the head structure of the present invention.
Fig. 2 is a partially enlarged view of fig. 1.
Fig. 3 is a right side view of fig. 1.
Description of reference numerals: the device comprises a castable baffle 1, a heat-resistant steel flame collecting hood outer barrel 2, a ceramic wear-resistant barrel 3, an axial flow air outer barrel clamping groove 4, an axial flow air outer barrel 5, an axial flow air inner barrel 6, other nozzle internal structural components 7 and a castable protective layer 8.
Detailed Description
The technical solution of the present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1 to 3, the wear-resistant flame holding hood for the burner of the rotary kiln of the present invention includes a castable baffle 1, a heat-resistant steel flame holding hood outer cylinder 2, a ceramic wear-resistant cylinder 3, an axial flow air outer cylinder clamping groove 4, an axial flow air outer cylinder 5, an axial flow air inner cylinder 6, and a castable protective layer 8. Castable baffle 1 sets up at castable protective layer 8 front end, the inside cavity ring that sets up on castable protective layer 8 of handing-over department of castable protective layer 8 and castable baffle 1, installation heat-resistant steel holds together flame cover urceolus 2 on the cavity ring, heat-resistant steel holds together flame cover urceolus 2 front end and sets up circular step, there is the cylinder fitting surface circular step inside, ceramic wear-resisting barrel 3 of inboard fixed mounting of fitting surface, ceramic wear-resisting barrel 3 one side sets up axial flow wind urceolus draw-in groove 4, axial flow wind urceolus draw-in groove 4 is with axial flow wind urceolus 5 and ceramic wear-resisting barrel 3, axial flow wind urceolus 5 inboard is axial flow wind inner tube 6, the interior edge of ceramic wear-resisting barrel 3 and the outmost marginal parallel and level of axial flow wind hole export after. The utility model discloses an axial compressor wind urceolus draw-in groove 4 is the rotary clamping groove structure preferably, the operation of being convenient for like this.
The utility model discloses a heat-resistant steel is held together flame cover urceolus 2 and axial compressor wind urceolus draw-in groove 4 and is the heat-resistant steel material.
The utility model discloses a wear-resisting barrel of pottery 3 can adopt the powder ceramic forming part.
The utility model also comprises other internal structural components 7 of the spray head, as shown in figure 1. The utility model discloses a shower nozzle inner structure 7 designs according to actual conditions, like the open inner structure of patents such as CN 200920289762-pulverized coal and gas fuel co-combustion combustor for the rotary kiln, CN 2011200169952-spiral-flow type four-channel gas burner for the rotary kiln, CN 201320485309-low oxynitrides carbide coal gas combustor.
The utility model discloses a key main part spare forms a whole for holding together flame cover equipment part of the wear-resisting barrel 3 of pottery during the assembly, plays and holds together flame and high temperature resistant wear-resisting effect. The front end of an axial flow air outer barrel 5 correspondingly connected with the ceramic wear-resistant barrel 3 is provided with an axial flow air outer barrel clamping groove 4, the axial flow air outer barrel clamping groove 4 is matched with the heat-resistant steel flame holding cover outer barrel 2 for installation, the heat-resistant steel flame holding cover outer barrel 2 is fixedly provided with the ceramic wear-resistant barrel 3 on the inner side of a matching surface, and after the axial flow air outer barrel clamping groove 4 is installed in place, the inner edge of the ceramic wear-resistant barrel 3 is parallel and level with the outermost edge of an outlet of an axial flow air hole, so that a flame holding. Because the ceramic material still has high hardness at the high temperature of 1800 ℃, the abrasion of the particles sprayed or convoluted along with the axial flow wind on the inner wall of the ceramic is very small, thereby ensuring the service life of the flame gathering cover to be prolonged, and simultaneously ensuring the good flame gathering effect of the flame gathering cover due to the smooth characteristic of the inner wall of the ceramic.
The utility model discloses a difficult point lies in selecting for use the wear-resisting barrel 3 of annular pottery of reasonable size, guarantees the high temperature wearability of pottery and the size precision when assembling as required. Since the adjacent heat-resistant steels are not thermally deformed in conformity with the ceramic member, the corresponding fitting clearance is taken into consideration. The assembly gap between the ceramic wear-resistant cylinder 3 and the heat-resistant steel flame gathering cover outer cylinder 2 is 0.2mm to 0.8mm, and the assembly gap between the ceramic wear-resistant cylinder 3 and the axial flow air outer cylinder clamping groove 4 is 0.2mm to 0.8 mm.
Claims (7)
1. The utility model provides a wear-resisting flame hood that holds together for combustor for rotary kiln, holds together flame hood urceolus, the wear-resisting barrel of pottery, axial flow wind urceolus draw-in groove, axial flow wind urceolus, castable protective layer including castable baffle, heat-resistant steel, and the castable baffle sets up at castable protective layer front end, its characterized in that: the inner edge of the ceramic wear-resistant cylinder is flush with the outermost edge of an outlet of an axial flow air hole.
2. The wear-resistant flame holding hood for the burner for the rotary kiln as claimed in claim 1, wherein: the axial flow air inner cylinder is arranged on the inner side of the axial flow air outer cylinder.
3. The wear-resistant flame holding hood for the burner for the rotary kiln as claimed in claim 1, wherein: the axial flow air outer barrel clamping groove is of a rotary clamping groove structure.
4. The wear-resistant flame holding hood for the burner for the rotary kiln as claimed in claim 1, wherein: the heat-resistant steel flame gathering cover outer barrel and the axial flow air outer barrel clamping groove are made of heat-resistant steel.
5. The wear-resistant flame holding hood for the burner for the rotary kiln as claimed in claim 1, wherein: the ceramic wear-resistant cylinder is a powder ceramic forming piece.
6. The wear-resistant flame holding hood for the burner for the rotary kiln as claimed in claim 1, wherein: the assembly clearance between the ceramic wear-resistant cylinder and the heat-resistant steel flame gathering cover outer cylinder is 0.2mm to 0.8 mm.
7. The wear-resistant flame holding hood for the burner for the rotary kiln as claimed in claim 1, wherein: the assembly clearance between the ceramic wear-resistant cylinder and the axial flow air outer cylinder clamping groove is 0.2mm to 0.8 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921506702.1U CN210625310U (en) | 2019-09-11 | 2019-09-11 | Wear-resistant flame holding cover for burner for rotary kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921506702.1U CN210625310U (en) | 2019-09-11 | 2019-09-11 | Wear-resistant flame holding cover for burner for rotary kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210625310U true CN210625310U (en) | 2020-05-26 |
Family
ID=70751812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921506702.1U Expired - Fee Related CN210625310U (en) | 2019-09-11 | 2019-09-11 | Wear-resistant flame holding cover for burner for rotary kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210625310U (en) |
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2019
- 2019-09-11 CN CN201921506702.1U patent/CN210625310U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200526 Termination date: 20200911 |