Connecting channel structure for double-chamber lime kiln
通过改造双膛石灰窑连接通道的结构,采用矩形中空管状建筑和整体悬挂结构的封盖,解决了现有连接通道易老化、掉砖和积灰的问题,实现了更高的过风量、更 Large area and stronger firmness.
Patent Information
- Application Number
- CN202420316903.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-21
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2034-02-21
AI Technical Summary
The arched masonry structure of the existing double-bore lime kiln connecting channels is prone to aging, bricks fall off, and dust accumulates and blocks, and has a short service life and lacks effective solutions.
The connection channel structure of the rectangular hollow tubular building is adopted, including a U-shaped trough and a cover. The cover is changed to a flat ceiling with an overall suspended structure, and the special-shaped composite bricks of the arch bridge are removed to increase the air flow and area and enhance the solidity.
It completely solves the problem of easy loss of brick brick design on the top -type combination brick design on the top of the channel, which greatly increases the air volume and channel area, strengthens the firmness, and extends the use cycle.
Smart Images
Figure CN222393313U_ABST
Abstract
Description
Technical Field
[0001] The new technology relates to the technical field of double-chamber lime kiln equipment, and particularly to a connecting channel for a double-chamber lime kiln.
[0002] structure. Background Art
[0003] The double-chamber lime kiln is one of the most advanced lime production equipments at present, and is widely used in the production of industrial lime and building lime. It is mainly composed of two vertical kiln chambers that are mirror images of each other. During the production process, coal powder and combustion-supporting air are supplied to one kiln chamber to form a high-temperature environment, so that the limestone in the kiln chamber is decomposed at high temperature, which is called the calcining chamber; the other kiln chamber is filled with normal temperature materials, and the high-temperature flue gas formed by the combustion chamber is introduced from the bottom and discharged from the top to achieve the effect of preheating the materials. The kiln chamber on this side is called the heat storage chamber. After about one cycle, the two kiln chambers exchange roles to achieve continuous production of lime.
[0004] Since it adopts the process of double-chamber calcination-periodic reversing, the high-temperature flue gas generated by calcination and the high-temperature exhaust gas formed by cooling of the finished product are used to preheat the materials before being discharged from the kiln chamber. The exhaust temperature can usually be reduced to about ℃, so it has a high heat utilization rate. A connecting channel is set between the combustion chamber and the heat storage chamber to connect the airways of the two parallel kiln chambers to each other, so that the high-temperature flue gas can flow smoothly from one chamber to another.
[0005] In the double-chamber lime kiln process of the prior art, limestone material is fed into the kiln chamber from the top, calcined and decomposed at high temperature in the kiln chamber to generate calcium oxide products, which are discharged from the bottom of the kiln chamber. Combustion-supporting air is fed into the calcining chamber from the top of the kiln, and fuel is fed into the calcining chamber from a coal powder spray gun installed on the side wall of the kiln chamber. The fuel is burned in the calcining chamber to form a high-temperature atmosphere of about , which provides heat for the calcination and decomposition of lime. Cooling air is fed into the kiln from the bottom of the kiln to cool the high-temperature finished lime. The high-temperature flue gas formed by calcination and the high-temperature exhaust gas formed by cooling enter the heat storage chamber through the connecting channel, contact the material in the heat storage chamber, preheat the material in the heat storage chamber, and then discharge the kiln chamber from the exhaust gas outlet at the top of the heat storage chamber, enter the dust removal system, and discharge into the surrounding environment after dust removal. After a calcination cycle is completed, the combustion-supporting air is switched from the original calcining chamber to the original combustion chamber by operating the reversing valve installed on the top of the kiln, and the exhaust gas is discharged from the top of the original combustion chamber.
[0006] Existing connecting passages are generally arched masonry structures built with refractory materials. The bricks of the arched masonry structure are prone to aging and bricks falling off and collapse during use, and the service life is short. In particular, the arched masonry structure passage is narrow and the structure is complex, which is more prone to dust accumulation and clogging. However, no effective solution has been proposed yet. Utility Model Content
[0007] The utility model aims to provide a connecting channel structure for a double-chamber lime kiln to solve the problems raised in the above-mentioned background technology.
[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a connecting channel structure for a double-chamber lime kiln, including a connecting channel connecting two vertical kilns that are mirror images of each other in the double-chamber kiln itself, the connecting channel is a hollow tubular building with a rectangular cross-sectional shape, the connecting channel includes a U-shaped trough body and a cover, and the left and right ends of the cover are located above the two folded edges of the U-shaped trough body itself.
[0009] The U-shaped trough body includes a metal shell on the left and right sides and the bottom of the U-shape itself, a clay refractory brick layer is built close to the inner side of the metal shell, a neutral refractory material casting layer is cast inside the clay refractory brick layer, and an alkaline refractory brick layer or a neutral refractory brick layer is built inside the neutral refractory material casting layer; a high-aluminum fiber cotton layer is provided on the upper ends of the clay refractory brick layer, the neutral refractory material casting layer, the alkaline refractory brick layer or the neutral refractory brick layer located on the left and right sides of the metal shell inside the U-shape of the U-shaped trough body itself; the lower end of the alkaline refractory brick layer or the neutral refractory brick layer located on the left and right sides of the U-shaped trough body itself is vertically above the left and right ends of the clay refractory brick layer, the neutral refractory material casting layer, the alkaline refractory brick layer or the neutral refractory brick layer located above the metal shell on the bottom of the U-shape.
[0010] The cover includes metal walls on the left and right sides of the cover itself, the inner side of the metal wall is a clay refractory brick layer, the inner side of the clay refractory brick layer is provided with a high-aluminum fiber cotton layer, the refractory material casting layer is located in the middle of the cover itself, and the left and right sides of the refractory material casting layer are fixedly connected to the high-aluminum fiber cotton layer located on the inner side of the metal walls on the left and right sides of the cover itself; the upper end of the refractory material casting layer is coplanar with the upper end of the metal wall, the upper end of the clay refractory brick layer, and the upper end of the high-aluminum fiber cotton layer, and multiple layers of high-temperature resistant metal grids are arranged from top to bottom inside the refractory material casting layer, and each layer of metal grids is arranged horizontally.
[0011] A plurality of I-beams are arranged at equal intervals along the front-to-back direction on the upper end of the cover, and the lower left and right ends of the I-beams are fixed to the upper ends of the metal walls on the left and right sides of the cover by bolt structures; anchors are welded at equal intervals on the lower ends of the I-beams, and the lower ends of the anchors vertically penetrate into the refractory material casting layer of the cover and cross and are fixedly connected with the multiple layers of horizontally arranged high-temperature resistant metal grids in the refractory material casting layer.
[0012] The lower ends of the metal walls on the left and right sides of the cover are fixedly connected to the upper ends of the metal shells on the left and right sides of the U-shaped trough body itself; the lower end of the clay refractory brick layer, the lower end of the high-aluminum fiber cotton layer, and the lower ends of the left and right sides of the refractory material casting layer of the cover itself are fixedly connected to the upper end of the high-aluminum fiber cotton layer at the upper end of the U-shaped trough body itself.
[0013] A plurality of fire extraction holes are arranged in the middle of the upper end surface of the refractory material casting layer of the sealing cover itself along the front-to-back direction, each fire extraction hole penetrates the refractory material casting layer along the up-down direction, each fire extraction hole is located between two adjacent I-beams in the front and back, and a cover body is installed above the fire extraction hole; a plurality of slag cleaning openings are arranged below the metal shells on the left and right sides of the U-shaped shape of the U-shaped trough body itself, the slag cleaning openings pass through the metal shell of the U-shaped trough body itself, the clay refractory brick layer, the neutral refractory material casting layer, the alkaline refractory brick layer or the neutral refractory brick layer, and an opening is arranged below the inner side of the alkaline refractory brick layer or the neutral refractory brick layer, and a cover body is installed on the opening of the slag cleaning opening located on the outer side of the metal shell of the U-shaped trough body itself.
[0014] The U-shaped trough body itself has a support body in the middle of the U-shaped bottom surface. The support body is a long strip protrusion arranged along the front-back direction, and the cross-sectional shape of the long strip protrusion is an isosceles trapezoid with the small end facing upward.
[0015] The clay refractory brick layers inside the U-shaped trough body and the cover are both low-creep refractory brick layers, the neutral refractory material casting layer of the U-shaped trough body itself is a high-aluminum refractory material casting layer, and the neutral refractory brick layer is built inside the neutral refractory material casting layer of the U-shaped trough body itself, and the neutral refractory brick layer is a high-aluminum refractory brick layer; the refractory material casting layer of the cover itself is divided into an upper and lower refractory material casting layer, the refractory material casting layer located on the upper layer is a lightweight thermal insulation casting layer, and the lightweight thermal insulation casting layer is a clay lightweight refractory material casting layer; the refractory material casting layer located on the lower layer is a neutral steel fiber refractory material casting layer, and the neutral steel fiber refractory material casting layer is a steel fiber high-aluminum refractory material casting layer.
[0016] The lower end of the anchor piece welded at equal intervals at the lower end of the I-beam penetrates into the neutral steel fiber refractory material casting layer of the cover through the lightweight thermal insulation casting layer of the cover itself, and crosses and is fixedly connected with the multiple layers of horizontally arranged high-temperature resistant metal grids in the neutral steel fiber refractory material casting layer.
[0017] The anchor is shaped like a Y-shaped anchor made of high-temperature resistant metal material, including an elongated metal rib plate section arranged in the up-down direction, the lower end of the elongated metal rib plate section is forked in any two directions and the length of the forked rib plate section in any direction is not less than one-fourth of the total length of the anchor itself in the up-down direction, and the lower end of the forked rib plate section is close to the lower end of the neutral steel fiber refractory material casting layer; the upper end of the elongated metal rib plate section is welded to the lower end of the I-beam, and the lower end of the elongated metal rib plate section penetrates into the neutral steel fiber refractory material casting layer of the cover through the lightweight thermal insulation casting layer of the cover itself, and vertically crosses and is fixedly connected with the multiple layers of horizontally arranged high-temperature resistant metal grids in the neutral steel fiber refractory material casting layer, and the forked rib plate section at the lower end of the elongated metal rib plate section also crosses and is fixedly connected with the multiple layers of horizontally arranged high-temperature resistant metal grids in the neutral steel fiber refractory material casting layer.
[0018] The fire extraction hole penetrates the sealed lightweight thermal insulation castable layer and the neutral steel fiber refractory casting layer in the up and down directions, and a steel inner sleeve made of high temperature resistant material is sleeved along the inner wall of the fire extraction hole. The outer side of the steel inner sleeve is vertically crossed and fixedly connected with the multiple layers of horizontally arranged high temperature resistant metal grids in the neutral steel fiber refractory casting layer.
[0019] Compared with the prior art, the beneficial effects of the utility model are:
[0020] The utility model changes the inclined walls of the two side walls of the original double-chamber kiln connecting channel arch masonry structure into straight walls, removes the arch bridge special-shaped combined brick structure on the top of the channel, and changes the top of the channel as a whole into a flat ceiling of an overall hanging structure, which can completely solve the defect that the original special-shaped combined brick design on the top of the connecting channel is easy to fall off during long-term use. Through such improvements, the air flow of the connecting channel is greatly increased, the area of the connecting channel is increased, and the firmness of the connecting channel is also strengthened. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 This is a structural schematic diagram of a connecting channel structure for a double-chamber lime kiln of the utility model;
[0022] FIG2 is a schematic diagram of the position of a double-chamber lime kiln in which a connecting channel is located in a connecting channel structure for a double-chamber lime kiln according to the utility model;
[0023] As shown in the attached figure: 1 lightweight thermal insulation castable layer; 2 fire extraction hole; 3 anchor; 4 neutral steel fiber refractory casting layer; 5 metal shell; 6 neutral refractory brick layer; 7 high alumina fiber cotton layer; 8 clay refractory brick layer; 9 slag removal port; 10 neutral refractory casting layer; 11 support body; 12 metal wall; 13 vertical kiln A; 14 vertical kiln B; 15 connecting channel. Implementation
[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0025] Please refer to the legend. In the embodiment of the utility model, a connecting channel structure for a double-chamber lime kiln includes a connecting channel 15 connecting a vertical kiln A and a vertical kiln B which are mirror images of each other in the double-chamber kiln itself, and is characterized in that: the connecting channel 15 is a hollow tubular building with a rectangular cross-sectional shape, and the connecting channel 15 includes a U-shaped trough body and a cover, and the left and right ends of the cover are located above the two folded edges of the U-shaped shape of the U-shaped trough body itself; the U-shaped trough body includes a metal shell 5 on the left and right sides and the bottom of the U-shaped shape itself, and a clay refractory brick layer 8 is built close to the inner side of the metal shell 5, and a neutral refractory material casting layer 10 is cast inside the clay refractory brick layer 8, and an alkaline refractory brick layer or a neutral refractory brick layer 6 is built inside the neutral refractory material casting layer 10; the clay refractory brick layer 8, the neutral refractory material casting layer 10, and the alkaline refractory brick layer 6 are built on the inner side of the metal shell 5 on the left and right sides of the U-shaped shape of the U-shaped trough body itself. The upper ends of the three brick layers or neutral refractory brick layers 6 are all provided with high-aluminum fiber cotton layers 7, the lower ends of the alkaline refractory brick layers or neutral refractory brick layers 6 located on the inner sides of the metal shells 5 on the left and right sides of the U-shaped trough body itself are perpendicular to the clay refractory brick layers 8, neutral refractory material casting layers 10, and alkaline refractory brick layers or neutral refractory brick layers 6 located on the upper sides of the metal shells 5 on the bottom surface of the U-shaped trough body itself; the cover includes metal walls 12 on the left and right sides of the cover itself, the inner side of the metal wall 12 is a clay refractory brick layer 8, the inner side of the clay refractory brick layer is provided with a high-aluminum fiber cotton layer 7, the refractory material casting layer is located in the middle of the cover itself, and the left and right sides of the refractory material casting layer are connected to the metal wall 12 located in the cover. The high-aluminum fiber cotton layer 7 on the inner side of the metal wall 12 on the left and right sides of the cover itself is fixedly connected; the upper end of the refractory material casting layer is coplanar with the upper end of the metal wall 12, the upper end of the clay refractory brick layer 8, and the upper end of the high-aluminum fiber cotton layer 7, and multiple layers of high-temperature resistant metal grids are arranged from top to bottom inside the refractory material casting layer, and each layer of metal grids is arranged horizontally; a plurality of I-beams are arranged at equal intervals along the front-to-back direction on the upper end of the cover, and the lower left and right ends of the I-beams are fixed to the upper ends of the metal walls 12 on the left and right sides of the cover by bolt structures; anchors 3 are welded at equal intervals at the lower end of the I-beams, and the lower ends of the anchors 3 vertically penetrate into the refractory material casting layer of the cover and cross and Fixed connection; the lower ends of the metal walls 12 on the left and right sides of the cover are fixedly connected to the upper ends of the metal shells 5 on the left and right sides of the U-shaped trough body itself; the lower end of the clay refractory brick layer 8 of the cover itself, the lower end of the high-aluminum fiber cotton layer 7, and the lower ends of the left and right sides of the refractory material casting layer are all fixedly connected to the upper end of the high-aluminum fiber cotton layer 7 at the upper end of the U-shaped trough body itself; the utility model changes the top arch masonry structure of the original double-chamber lime kiln connecting channel 15 itself into a cover with a hanging structure, and the lower ends of the left and right sides of the cover are fixedly connected to the upper ends of the walls on the left and right sides of the U-shaped trough body. Through such improvements, the air flow of the connecting channel 15 is greatly increased, the area of the connecting channel 15 is increased, and the firmness of the connecting channel 15 is also strengthened.
[0026] A plurality of fire extraction holes 2 are provided in the middle of the upper end surface of the refractory casting layer of the sealing cover itself along the front-to-back direction, each fire extraction hole 2 penetrates the refractory casting layer along the up-down direction, each fire extraction hole 2 is located between two adjacent I-beams in the front and back, and a cover body is installed above the fire extraction hole 2; a plurality of slag cleaning openings 9 are provided below the metal shell 5 on the left and right sides of the U-shaped shape of the U-shaped trough body itself, the slag cleaning openings 9 pass through the metal shell 5 of the U-shaped trough body itself, the clay refractory brick layer 8, the neutral refractory casting layer 10, the alkaline refractory brick layer or the neutral refractory brick layer 6, and an opening is provided below the inner side of the alkaline refractory brick layer or the neutral refractory brick layer 6, and a cover body is installed on the opening of the slag cleaning opening 9 located on the outer side of the metal shell 5 of the U-shaped trough body itself.
[0027] The U-shaped trough body itself is provided with a support body 11 in the middle of the U-shaped bottom surface, and the support body 11 is a long strip protrusion arranged along the front-back direction, and the cross-sectional shape of the long strip protrusion is an isosceles trapezoid with the small end facing upward; the connecting channel 15 itself is provided with a support body 11 in the middle of the U-shaped bottom surface of the U-shaped trough body itself, and the setting of the support body corresponds to the position of the fire extraction hole 2 opened in the middle of the cover above the connecting channel 15 itself; the connecting channel 15 has dust accumulation in the annular channel during the production process, and the excessive dust accumulation must be cleaned in time, otherwise it will affect the normal production of the kiln, so the dust cleaning The specific steps are to open the cover installed on the fire extraction hole 2 of the connecting channel 15 itself, and use an air cannon to blow air downward through the fire extraction hole 2 in the middle of the cover above the connecting channel 15. After the wind is divided by the middle support body 11 on the bottom surface of the U-shaped trough body of the connecting channel 15, the wind direction is changed to blow sideways to the left and right sides, thereby blowing the dust on the bottom of the U-shaped trough body to the sides of the bottom surface of the U-shaped trough body, open the cover on the outer opening of the slag cleaning port 9 below the left and right sides of the U-shaped trough body, cooperate with the air cannon to blow air and use the ash removing tool to remove the dust on the bottom of the U-shaped trough body of the connecting channel 15 through the slag cleaning port 9.
[0028] The clay refractory brick layers 8 inside the U-shaped trough body and the cover are both low creep refractory brick layers, the neutral refractory material casting layer 10 of the U-shaped trough body itself is a high alumina refractory material casting layer, and the inner side of the neutral refractory material casting layer 10 of the U-shaped trough body itself is built with a neutral refractory brick layer 6, which is a high alumina refractory brick layer; the refractory material casting layer of the cover itself is divided into an upper and lower refractory material casting layer, the refractory material casting layer located on the upper layer is a lightweight thermal insulation casting layer 1, which is a clay lightweight refractory material casting layer; the refractory material casting layer located on the lower layer is a neutral steel fiber refractory material casting layer 4, which is a steel fiber high alumina refractory material casting layer. The purpose of this arrangement is that the bottom end of the cover on the inner side of the connecting channel 15 and the inner side of the U-shaped trough are both made of neutral refractory materials, and the high-temperature exhaust gas generated by the double-chamber lime kiln itself needs to be transmitted through the connecting channel 15. The nature of the high-temperature exhaust gas is alkaline, and the inner wall of the connecting channel 15 itself is made of neutral refractory materials, which is also convenient for coping with this environment.
[0029] The lower end of the anchor 3 welded at equal intervals at the lower end of the I-beam penetrates into the neutral steel fiber refractory casting layer 4 of the cap through the lightweight thermal insulation castable layer 1 of the cap itself and crosses and is fixedly connected with the multiple layers of horizontally arranged high-temperature resistant metal grids in the neutral steel fiber refractory casting layer 4; the anchor 3 is in the shape of a Y-shaped anchor 3 made of high-temperature resistant metal, including a long strip of metal rib plate section arranged in the up-down direction, the lower end of the long strip of metal rib plate section is forked in any two directions and the length of the rib plate section forked in any direction is not less than the total length of the anchor 3 itself in the up-down direction One-fourth of the length, the lower end of the bifurcated rib plate section is close to the lower end of the neutral steel fiber refractory casting layer 4; the upper end of the long strip metal rib plate section is welded to the lower end of the I-beam, and the lower end of the long strip metal rib plate section goes deep into the neutral steel fiber refractory casting layer 4 of the cover through the lightweight thermal insulation casting layer 1 of the cover itself, and vertically crosses and is fixedly connected with the multi-layer horizontal high-temperature resistant metal grid in the neutral steel fiber refractory casting layer 4, and the bifurcated rib plate section at the lower end of the long strip metal rib plate section also crosses and is fixedly connected with the multi-layer horizontal high-temperature resistant metal grid in the neutral steel fiber refractory casting layer 4. This paragraph mainly describes the specific structure and shape of the anchor 3.
[0030] The fire extraction hole 2 penetrates the sealed light insulation castable layer 1 and the neutral steel fiber refractory casting layer 4 in the up-down direction, and a steel inner sleeve made of high temperature resistant material is sleeved along the inner wall of the fire extraction hole 2. The outer side of the steel inner sleeve is vertically crossed and fixedly connected with the multi-layer horizontally arranged high temperature resistant metal grids in the neutral steel fiber refractory casting layer 4. This section mainly describes the structure and material of the inner wall of the fire extraction hole 2.
[0031] The working principle of the utility model is as follows: the utility model changes the inclined walls of the two side walls of the arched masonry structure of the original double-chamber kiln connecting channel 15 into straight walls, removes the arch bridge special-shaped combined brick structure on the top of the channel, and changes the top of the channel as a whole into a flat ceiling of an overall hanging structure, which can completely solve the defect that the original special-shaped combined brick design on the top of the connecting channel 15 is easy to fall off during long-term use. Through such improvements, the air flow of the connecting channel 15 is greatly increased, the area of the connecting channel 15 is increased, and the firmness of the connecting channel 15 is also strengthened.
[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A connecting channel structure for a double-chamber lime kiln, comprising a connecting channel connecting two vertical kilns that are mirror images of each other in the double-chamber kiln, characterized in that: The connecting channel is a hollow tubular building with a rectangular cross-section, and the connecting channel includes a U-shaped trough body and a cover, and the left and right ends of the cover are located above the two folded edges of the U-shaped trough body itself; the U-shaped trough body includes a metal shell on the left and right sides and the bottom of the U-shaped shape itself, and a clay refractory brick layer is built close to the inner side of the metal shell, and a neutral refractory material casting layer is cast inside the clay refractory brick layer, and an alkaline refractory brick layer or a neutral refractory brick layer is built inside the neutral refractory material casting layer; a high-aluminum fiber cotton layer is provided on the upper ends of the clay refractory brick layer, the neutral refractory material casting layer, the alkaline refractory brick layer or the neutral refractory brick layer located on the inner sides of the metal shell on the left and right sides of the U-shaped shape of the U-shaped trough body itself. The lower end of the alkaline refractory brick layer or neutral refractory brick layer located on the inner side of the metal shell on the left and right sides of the U-shaped trough body itself is perpendicular to the clay refractory brick layer, neutral refractory material casting layer, and alkaline refractory brick layer or neutral refractory brick layer located on the left and right ends of the three refractory layers above the metal shell on the bottom of the U-shaped shape; the cover includes metal walls on the left and right sides of the cover itself, the inner side of the metal wall is a clay refractory brick layer, and a high-aluminum fiber cotton layer is arranged on the inner side of the clay refractory brick layer. The refractory material casting layer is located in the middle position of the cover itself, and the left and right sides of the refractory material casting layer are fixedly connected to the high-aluminum fiber cotton layer located on the inner side of the metal wall on the left and right sides of the cover itself; the upper end of the refractory material casting layer is coplanar with the upper end of the metal wall, the upper end of the clay refractory brick layer, and the upper end of the high-aluminum fiber cotton layer. Multiple layers of high-temperature resistant metal grids are arranged from top to bottom inside the refractory casting layer, and each layer of metal grids is arranged horizontally; multiple I-beams are arranged at equal intervals on the upper end of the cover along the front-to-back direction, and the lower left and right ends of the I-beams are fixed to the upper ends of the metal walls on the left and right sides of the cover by bolt structures; anchors are welded at equal intervals on the lower ends of the I-beams, and the lower ends of the anchors vertically penetrate into the refractory casting layer of the cover and cross and are fixedly connected with the multiple layers of horizontally arranged high-temperature resistant metal grids in the refractory casting layer; the lower ends of the metal walls on the left and right sides of the cover are fixedly connected to the upper ends of the metal shells on the left and right sides of the U-shaped trough body itself; the lower end of the clay refractory brick layer of the cover itself, the lower end of the high-aluminum fiber cotton layer, and the lower ends of the left and right sides of the refractory casting layer are all fixedly connected to the upper end of the high-aluminum fiber cotton layer at the upper end of the U-shaped trough body itself.
2. A connecting channel structure for a double-chamber lime kiln according to claim 1, characterized in that: The clay refractory brick layers inside the U-shaped trough body and the cover are both low-creep refractory brick layers, the neutral refractory casting layer of the U-shaped trough body itself is a high-aluminum refractory casting layer, and the inner side of the neutral refractory casting layer of the U-shaped trough body itself is a neutral refractory brick layer, which is a high-aluminum refractory brick layer; the refractory casting layer of the cover itself is divided into upper and lower refractory casting layers, the refractory casting layer located on the upper layer is a lightweight thermal insulation casting layer, which is a clay lightweight refractory casting layer; the refractory casting layer located on the lower layer is a neutral steel fiber refractory casting layer, which is a steel fiber high-aluminum refractory casting layer.
3. A connecting channel structure for a double-chamber lime kiln according to claim 1, characterized in that: The lower end of the anchor welded at equal intervals at the lower end of the I-beam penetrates into the neutral steel fiber refractory material casting layer of the cover through the lightweight thermal insulation casting layer of the cover itself, and crosses and is fixedly connected with the multiple layers of horizontally arranged high-temperature resistant metal grids in the neutral steel fiber refractory material casting layer.
4. A connecting channel structure for a double-chamber lime kiln according to claim 3, characterized in that: The anchor is in the shape of a Y-shaped anchor made of high-temperature resistant metal material, including a long metal rib plate section arranged in the up-down direction, the lower end of the long metal rib plate section is forked in any two directions and the length of the forked rib plate section in any direction is not less than one-fourth of the total length of the anchor itself in the up-down direction, and the lower end of the forked rib plate section is close to the lower end of the neutral steel fiber refractory material casting layer; the upper end of the long metal rib plate section is welded to the lower end of the I-beam, and the lower end of the long metal rib plate section penetrates into the neutral steel fiber refractory material casting layer of the cover through the lightweight thermal insulation casting layer of the cover itself, and vertically crosses and is fixedly connected with the multiple layers of horizontally arranged high-temperature resistant metal grids in the neutral steel fiber refractory material casting layer, and the forked rib plate section at the lower end of the long metal rib plate section also crosses and is fixedly connected with the multiple layers of horizontally arranged high-temperature resistant metal grids in the neutral steel fiber refractory material casting layer.
5. The connecting passage structure for a double-chamber lime kiln according to claim 1, characterized in that: A plurality of fire extraction holes are arranged in the middle of the upper end surface of the refractory casting layer of the sealing cover itself along the front-to-back direction, and the fire extraction holes penetrate the lightweight thermal insulation casting layer and the neutral steel fiber refractory casting layer of the sealing cover refractory casting layer along the up-down direction, and the fire extraction holes are all located between two adjacent I-beams in the front and back, and a cover body is installed above the fire extraction holes; a plurality of slag cleaning openings are arranged below the metal shell on the left and right sides of the U-shaped shape of the U-shaped trough body itself, and the slag cleaning openings pass through the metal shell of the U-shaped trough body itself, the clay refractory brick layer, the neutral refractory casting layer, the alkaline refractory brick layer or the neutral refractory brick layer, and openings are arranged below the inner side of the alkaline refractory brick layer or the neutral refractory brick layer on both sides of the inside of the U-shaped trough body, and a cover body is installed on the opening of the slag cleaning opening located on the outer side of the metal shell of the U-shaped trough body itself.
6. A connecting passage structure for a double-chamber lime kiln according to claim 5, characterized in that: The fire extraction hole penetrates the lightweight thermal insulation castable layer and the neutral steel fiber refractory castable layer of the sealing refractory castable layer in the up and down directions. A steel inner sleeve made of high temperature resistant material is sleeved along the inner wall of the fire extraction hole. The outer side of the steel inner sleeve is vertically crossed and fixedly connected with the multiple layers of horizontally arranged high temperature resistant metal grids in the neutral steel fiber refractory castable layer of the sealing cover itself.
7. The connecting passage structure for a double-chamber lime kiln according to claim 1, characterized in that: A support body is provided in the middle of the bottom surface of the U-shaped trough body itself. The support body is a long strip protrusion arranged along the front-back direction, and the cross-sectional shape of the long strip protrusion is an isosceles trapezoid with the small end facing upward.