A shaft kiln center arch support structure

Abstract

This utility model belongs to the technical field of double-cylinder vertical lime kiln structures, and particularly relates to a support structure for the central arch of a vertical kiln. Its features include three I-beams and six support boxes located at both ends of the I-beams. The three I-beams are of equal height and arranged parallel to each other. The arch frame is located above the three I-beams. The arch frame is connected to the two outermost I-beams via four first anti-shift mechanisms. Second anti-shift mechanisms are installed on the I-beams. The support boxes are installed within the refractory brick walls already constructed on both sides of the central arch of the vertical kiln. The support boxes are pre-built within the refractory brick walls. There are two sets of first anti-shift mechanisms, two in each set, with one set installed on one side of the bottom of the arch frame. The second anti-shift mechanisms are installed on the outermost I-beams. Compared with the prior art, the beneficial effects of this utility model are: by utilizing the refractory brick walls under the arch foot bricks on both sides of the vertical kiln, the entire central arch mold can be quickly supported, simplifying the structure and improving efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of double-cylinder vertical lime kiln structure, and particularly relates to a central arch support structure for a vertical kiln. Background Technology

[0002] The production process of lime requires a calcination process, which is mainly completed in a kiln. Due to the large demand for lime, many small-scale lime kilns have been established for lime calcination, causing serious pollution to the atmospheric environment. There is an urgent need to upgrade to modern lime kilns with environmental protection and energy-saving functions and a high degree of mechanization and automation.

[0003] Patent document CN207730002U discloses an arch bridge for an annular sleeve kiln. The refractory bricks are cuboid, with a tenon on one side and a mortise on the opposite side. Several refractory bricks are connected by mortise and tenon joints to form the bridge body. Two arch foot bricks are fixed to the ground facing each other. One side of a door brick is fixedly connected to the arch foot brick, and the other side has a mortise and tenon joint to connect with the bridge body. This structure is suitable for the internal facilities of an annular sleeve kiln and can significantly improve the service life of the refractory bricks, thereby improving the overall service life of the arch bridge.

[0004] The above-mentioned existing technologies have the following technical problems when used: When supporting the arch of the lime vertical kiln, scaffolding needs to be built from the ground as the foundation to support the entire mold, which leads to complex support structure, high construction cost and long cycle. Utility Model Content

[0005] The purpose of this utility model is to provide a central arch support structure for a vertical kiln, which overcomes the shortcomings of the existing technology. It is used for the arch support of a vertical kiln for lime production. By means of the refractory brick walls under the arch foot bricks on both sides of the vertical kiln, it can quickly support the entire central arch mold without the need to build scaffolding from the ground. The structure is simple and reduces construction costs.

[0006] To achieve the above objectives, this utility model employs the following technical solution:

[0007] A vertical kiln central arch support structure includes three I-beams and six support boxes located at both ends of the I-beams. The three I-beams are of equal height and arranged in parallel. The arch frame is located above the three I-beams. The arch frame is connected to the two outermost I-beams by four first anti-shifting mechanisms. The I-beams are equipped with second anti-shifting mechanisms. The support boxes are installed in the refractory brick walls that have been completed on both sides of the central arch of the vertical kiln. The support boxes are pre-built in the refractory brick walls. There are two sets of first anti-shifting mechanisms, two in each set. One set of first anti-shifting mechanisms is installed on one side of the bottom of the arch frame. The second anti-shifting mechanisms are installed on the outermost I-beams.

[0008] Furthermore, the arch frame includes multiple support frames of the same shape, and connecting plates are bolted to the top and bottom of adjacent support frames.

[0009] Furthermore, the support frame includes an arc-shaped component and a rod-shaped component, with the top of the rod-shaped component connected to the arc-shaped component by bolts.

[0010] Furthermore, the first anti-slip mechanism includes a fixed plate, a first adjusting frame, a first fastening bolt, a pressing plate, a guide rod, and a second fastening bolt. The interior of the first adjusting frame is slidably connected to a rod-shaped component. The top of the rod-shaped component is connected to the first fastening bolt. The bottom of the first adjusting frame is slidably connected to the pressing plate. The first adjusting frame above the pressing plate is fixed with a fixed plate. The bottom of the first adjusting frame is connected to the second fastening bolt. The two sides of the pressing plate are movably connected to the first adjusting frame through guide rods.

[0011] Furthermore, a tension spring is fixedly installed between the top of the extrusion plate and the first adjustment frame.

[0012] Furthermore, the second anti-shifting mechanism includes a second adjusting frame, a pressing block, an assembly plate, a top plate, and assembly bolts. The second adjusting frame is a C-shaped frame structure. The inner side of the second adjusting frame is slidably connected to an I-beam. The pressing block is slidably connected inside the second adjusting frame. An assembly plate is connected to the second adjusting frame opposite to the pressing block. A top plate is fixed to the side of the assembly plate facing the pressing block. The assembly plate is connected to the second adjusting frame by assembly bolts.

[0013] Furthermore, the surface shape of the extrusion block matches one side of the web of the I-beam.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1) The arch support for the vertical kiln of lime is achieved by using the refractory brick wall under the arch foot bricks on both sides of the vertical kiln to quickly support the entire central arch mold without the need to build scaffolding from the ground, thus improving construction efficiency.

[0016] 2) By combining the I-beams and the support box, the arch frame can be supported at the bottom by placing the support box in the wall. This can support the central arch of the vertical kiln while reducing the tediousness and trouble of supporting the entire mold by raising scaffolding from the ground. After the support is completed, the support box can be removed from the inside of the wall and the remaining pits can be filled with high-temperature castable.

[0017] 3) Through the cooperation of the first adjusting frame, the first fastening bolt, the extrusion plate and the second fastening bolt, the arch frame can be positioned at the top of the support box. The elastic clamping action between the extrusion plate and the bottom of the I-beam prevents displacement, thereby making the arch frame more stable in supporting the center of the vertical kiln.

[0018] 4) Through the cooperation of the second adjusting frame, the pressing block and the assembly plate, the second adjusting frame can be slidably fixed by the pressing block and the I-beam. Thus, through the cooperation of the two second anti-shifting mechanisms on the I-beam, the arch support plate can be prevented from shifting on the I-beam. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0020] Figure 2 This is an exploded structural diagram of an embodiment of the present invention;

[0021] Figure 3 This is an exploded structural diagram of the arch frame in an embodiment of this utility model;

[0022] Figure 4 This is a schematic diagram of the support frame structure in an embodiment of the present utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the first anti-movement mechanism in an embodiment of this utility model;

[0024] Figure 6 This is a schematic diagram of the structure of the second anti-displacement mechanism in an embodiment of this utility model;

[0025] Figure 7 This is a schematic diagram of the internal structure of the second adjustment frame in an embodiment of this utility model.

[0026] In the diagram: 1-I-beam; 2-support box; 3-arch frame; 4-first anti-shift mechanism; 5-second anti-shift mechanism; 6-fixing plate; 7-support frame; 8-connecting plate; 9-arc-shaped component; 10-rod-shaped component; 11-first adjusting frame; 12-first fastening bolt; 13-extrusion plate; 14-guide rod; 15-tension spring; 16-second fastening bolt; 17-second adjusting frame; 18-extrusion block; 19-assembly plate; 20-top plate; 21-assembly bolt; 22-stepping plate. Detailed Implementation

[0027] The technical solution of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0028] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the specific embodiments used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the specific embodiments described below are some embodiments of this utility model. For those skilled in the art, other specific embodiments can be obtained based on these specific embodiments without creative effort.

[0029] The components of the present invention described and shown in the specific embodiments herein can be arranged and designed in numerous different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the specific embodiments is not intended to limit the scope of the claimed invention, but only to illustrate selected embodiments of the invention.

[0030] See Figure 1-7 This is a schematic diagram of an embodiment of the support structure for the central arch of a vertical kiln according to this utility model. It includes three I-beams 1 and six support boxes 2 located at both ends of the I-beams 1. The three I-beams 1 are of equal height and arranged parallel to each other. The arch frame 3 is located above the three I-beams 1. The arch frame 3 is connected to the two outermost I-beams 1 via four first anti-shifting mechanisms 4. Second anti-shifting mechanisms 5 are installed on the I-beams 1. The support boxes 2 are installed in the refractory brick walls that have been completed on both sides of the central arch of the vertical kiln. The support boxes 2 are pre-built in the refractory brick walls. There are two sets of first anti-shifting mechanisms 4, two in each set. One set of first anti-shifting mechanisms 4 is installed on one side of the bottom of the arch frame 3. The second anti-shifting mechanisms 5 are installed on the outermost I-beams 1. The three I-beams 1 support the bottom of the arch frame 3, and then the arch frame 3 supports the center of the vertical kiln. The support boxes 2 on both sides of the bottom of the I-beam 1 are embedded in the refractory brick walls already built under the arch feet on both sides of the central arch of the vertical kiln before construction, forming the support base points. Before use, the support boxes 2 are cut into strips on both sides of the bottom arch feet of the corresponding vertical kiln, forming brick joints. Then, the support boxes 2 are installed in the brick joints of the refractory bricks in the walls on both sides of the vertical kiln arch. The pressure of the wall prevents the support boxes 2 from falling out of the brick joints. The support boxes 2 are Z-shaped, with a concave cross-section at the end supporting the I-beam 1 and a straight cross-section at the end inside the vertical kiln wall. This allows the straight end of the support box 2 to be inserted into the brick joints of the walls on both sides. The self-weight of the already built refractory bricks and the arch bricks to be built presses the support boxes 2, thus supporting the I-beam 1. In this embodiment, the length of the refractory bricks on both sides of the vertical kiln arch is 230mm, the length of the support box 2 extending into the brick joint is 115mm, the thickness of the support box 2 is about 8mm, and after the support box 2 is removed from the brick joint, the brick joint is filled with high-temperature castable.

[0031] In other embodiments, the number of I-beams 1 may be greater, and a slab 22 may be placed between the I-beams 1 and the arch frame 3, with the axis of the slab 22 perpendicular to the axis of the I-beams 1. In other embodiments, the I-beams 1 may also be H-beams.

[0032] The first anti-slip mechanism 4 is installed on both sides of the bottom of the arch frame 3 to limit the lateral translation of the arch frame 3 on the top of the I-beam 1 and prevent the arch frame 3 from moving to both sides on the top of the I-beam 1; the second anti-slip mechanism 5 is installed on the outside of the I-beam 1 to limit the lateral movement of the arch frame 3, so that when the arch frame 3 is supported by the I-beam 1 through the slab 22, the second anti-slip mechanism 5 can limit the sliding of the slab 22 on the I-beam 1.

[0033] The arch frame 3 includes multiple identical support frames 7, with connecting plates 8 bolted to the top and bottom of adjacent support frames 7. The connecting plates 8 make the adjacent support frames 7 more stable, and also support the refractory bricks of the vertical kiln arch between adjacent support frames 7. The multiple connecting plates 8 can also limit and support the refractory bricks at the top. Each support frame 7 includes an arc-shaped member 9 and a rod-shaped member 10. The top of the rod-shaped member 10 is bolted to the arc-shaped member 9, so that the first anti-shifting mechanism 4 can be installed at both ends of the outer side of the rod-shaped member 10.

[0034] The support frame 7 includes an arc-shaped member 9 and a rod-shaped member 10, with the top of the rod-shaped member 10 connected to the arc-shaped member 9 by bolts. In this embodiment, there are four support frames 7, but there may also be multiple support frames 7.

[0035] The first anti-shifting mechanism 4 includes a fixed plate 6, a first adjusting frame 11, a first fastening bolt 12, a pressing plate 13, a guide rod 14, and a second fastening bolt 16. The interior of the first adjusting frame 11 is slidably connected to the rod-shaped member 10. The top of the rod-shaped member 10 is connected to the first fastening bolt 12. The bottom of the first adjusting frame 11 is slidably connected to the pressing plate 13. The fixed plate 6 is fixed to the first adjusting frame 11 above the pressing plate 13. The bottom of the first adjusting frame 11 is connected to the second fastening bolt 16. The two sides of the pressing plate 13 are movably connected to the first adjusting frame 11 through the guide rod 14. A tension spring 15 is fixedly installed between the top of the pressing plate 13 and the first adjusting frame 11. The first fastening bolt 12 ensures that the first adjusting frame 11 is not slipped on the outside of the rod-shaped member 10. The bottom end of the first adjusting frame 11 is slidably connected to the pressing plate 13, so that when the top of the pressing plate 13 contacts the I-beam 1, the pressing plate 13 prevents the rod-shaped member 10 from moving to both sides on the top of the I-beam 1. A fixing plate 6 is fixed at one end of the first adjusting frame 11 and at the top of the pressing plate 13, so that the pressing plate 6 and the pressing plate 13 press and position the I-beam 1, preventing the arch frame 3 from moving.

[0036] Adjusting the second fastening bolt 16 allows for a tighter contact between the extrusion plate 13 and the I-beam 1. Guide rods 14 are slidably connected to the inside of both sides of the extrusion plate 13. The guide rods 14 are fixed to the first adjusting frame 11, allowing the extrusion plate 13 to be raised and lowered by the guide rods 14 inside the first adjusting frame 11. A tension spring 15 is fixed to the top of the extrusion plate 13 and between it and the first adjusting frame 11. The descent of the extrusion plate 13 inside the first adjusting frame 11 causes the tension spring 15 to stretch, forming an elastic clamping.

[0037] The second anti-shifting mechanism 5 includes a second adjusting frame 17, a pressing block 18, an assembly plate 19, a top plate 20, and assembly bolts 21. The second adjusting frame 17 has a C-shaped frame structure. The inner side of the second adjusting frame 17 is slidably connected to the I-beam 1. The pressing block 18 is slidably connected inside the second adjusting frame 17. The assembly plate 19 is connected to the second adjusting frame 17 opposite to the pressing block 18. The top plate 20 is fixed to the side of the assembly plate 19 facing the pressing block 18. The assembly plate 19 is connected to the second adjusting frame 17 by the assembly bolts 21. The surface shape of the pressing block 18 matches one side of the web of the I-beam 1.

[0038] The assembly plate 19 presses against the extrusion block 18 via the top plate 20, thereby clamping and fixing the I-beam 1 that passes through it. The assembly plate 19 and the top plate 20 can be replaced as needed to ensure a more stable clamping effect. The assembly bolts 21 fix the assembly plate 19 to the second adjusting frame 17.

[0039] The usage process of this utility model embodiment is as follows: First, the first anti-slip mechanism 4 is installed on both sides of the outer side of the rod-shaped component 10, and the rod-shaped component 10 and the arc-shaped component 9 are bolted together to form a single support frame 7. Then, the connecting plate 8 between two adjacent support frames 7 is fixed with bolts to form an arch frame 3. Then, brick joints are opened inside the brick body at the bottom of the vertical kiln arch. Then, one end of the support box 2 is installed inside the brick joint, and fixed by contact between the outer side of one end of the support box 2 and the vertical kiln wall. The I-beam 1 is placed between two opposite support boxes 2, and then the arch frame 3 is placed on top of multiple I-beams 1, so that the arch frame 3 is stably placed on top of the I-beams 1 to form a stable platform frame.

[0040] Adjust the translational position of the second adjustment frame 17 on the outside of the I-beam 1 so that multiple second adjustment frames 17 on the same I-beam 1 can limit the corresponding mounting plate 22, so that the mounting plate 22 cannot slide on the top of the I-beam 1. Then, the assembly plate 19 and the top plate 20 are installed on the second adjustment frame 17, and the top plate 20 is pressed against the pressing block 18. The pressing block 18 presses one side of the web of the I-beam 1, thereby realizing the connection of the second adjustment frame 17 on the I-beam 1.

[0041] Then, the first adjusting frame 11 slides on the outside of the rod-shaped member 10 towards the direction of the I-beam 1, while the bottom of the fixing plate 6 contacts the I-beam 1. At the same time, the pressing plate 13 is pulled down, so that the pressing plate 13 descends through the guide rod 14 and drives the tension spring 15 to stretch. Then, the top of the pressing plate 13 contacts the bottom of the I-beam 1. At this time, the first fastening bolt 12 and the second fastening bolt 16 are rotated, so that the rotation of the first fastening bolt 12 contacts and presses the rod-shaped member 10, realizing the connection of the first adjusting frame 11 on the outside of the rod-shaped member 10. The second fastening bolt 16 is tightened, so that the contact between the pressing plate 13 and the bottom of the I-beam 1 is more secure, realizing the positioning of the arch frame 3 on the top of the I-beam 1. Then, the template erection of the central arch of the vertical kiln can be completed according to the normal construction process and schedule.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A shaft kiln center arch support structure, characterized in that, It includes three I-beams and six support boxes located at both ends of the I-beams. The three I-beams are of equal height and arranged in parallel. An arch frame is located above the three I-beams. The arch frame is connected to the two outermost I-beams through four first anti-shifting mechanisms. The I-beams are equipped with second anti-shifting mechanisms. The support boxes are installed in the refractory brick walls that have been built on both sides of the central arch of the vertical kiln. The support boxes are pre-built in the refractory brick walls. The first anti-shift mechanism consists of two sets, with two sets in each set. One set of the first anti-shift mechanism is installed on one side of the bottom of the arch frame. The second anti-slip mechanism is installed on the outermost I-beam.

2. A shaft center arch support structure according to claim 1, wherein The arch frame includes multiple support frames of the same shape, and connecting plates are bolted to the top and bottom of adjacent support frames.

3. A shaft center arch support structure according to claim 2, wherein The support frame includes an arc-shaped component and a rod-shaped component, with the top of the rod-shaped component connected to the arc-shaped component by bolts.

4. A shaft kiln centre arch support structure as claimed in claim 1 wherein, The first anti-slip mechanism includes a fixed plate, a first adjusting frame, a first fastening bolt, a pressing plate, a guide rod, and a second fastening bolt. The interior of the first adjusting frame is slidably connected to a rod-shaped component. The top of the rod-shaped component is connected to the first fastening bolt. The bottom of the first adjusting frame is slidably connected to the pressing plate. The first adjusting frame above the pressing plate is fixed with a fixed plate. The bottom of the first adjusting frame is connected to the second fastening bolt. The two sides of the pressing plate are movably connected to the first adjusting frame through guide rods.

5. A shaft kiln centre arch support structure as claimed in claim 4 wherein, A tension spring is fixedly installed between the top of the extrusion plate and the first adjustment frame.

6. A shaft kiln centre arch support structure as claimed in claim 1 wherein, The second anti-shifting mechanism includes a second adjusting frame, a pressing block, an assembly plate, a top plate, and assembly bolts. The second adjusting frame is a C-shaped frame structure. The inner side of the second adjusting frame is slidably connected to an I-beam. The pressing block is slidably connected inside the second adjusting frame. An assembly plate is connected to the second adjusting frame opposite to the pressing block. A top plate is fixed to the side of the assembly plate facing the pressing block. The assembly plate is connected to the second adjusting frame by assembly bolts.

7. A shaft kiln centre arch support structure as claimed in claim 6 wherein, The surface shape of the extrusion block matches one side of the web of the I-beam.

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