Arch angle cooling device for regenerative chamber of large-tonnage air kiln

Abstract

The invention relates to the technical field of kilns, and discloses a large-tonnage air kiln regenerative chamber arch angle cooling device which comprises a cooling air bag, an external air pipe is fixedly installed at the output end of the cooling air bag, a bent pipe is fixedly installed at the end, away from the cooling air bag, of the external air pipe, and a flow dividing pipe is fixedly installed at the end, away from the external air pipe, of the bent pipe. A blind plate is fixedly installed at the end, away from the bent pipe, of the flow dividing pipe, a plurality of blowing mechanisms are arranged on one side of the flow dividing pipe, each blowing mechanism comprises a sleeve, a blowing pipe is movably installed in the sleeve, and a plurality of push blocks are movably installed on the outer side of the sleeve. An air source system is formed by an external air pipe and a cooling air bag on the periphery of the kiln, cooling airflow is provided for the heat storage chamber, the temperature of a refractory material and a steel structure can be effectively reduced, high-temperature thermal erosion is reduced, the hot repair frequency of workers is synchronously reduced, the service life of equipment is prolonged, and energy conservation, consumption reduction and maintenance cost optimization are achieved while the operation safety of the kiln is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of kilns, and particularly relates to a cooling device for the arch corner of a regenerator of a large-tonnage air kiln. Background Art

[0002] A kiln is the most important equipment for producing photovoltaic glass. As a waste heat recovery and air preheating device, the regenerator can not only ensure a sufficiently high preheating temperature but also reduce the fluctuation of the preheating temperature. Its structure mainly includes a bottom flue, a checker arch, a checkerwork, a regenerator wall, a regenerator partition wall, a regenerator arch, and a steel structure. Since the kiln is in continuous production, two regenerators need to be equipped on both sides of the kiln. One side passes waste gas, and the other side passes the gas to be preheated. By lifting the gate plate on one side and lowering the gate plate on the other side at fixed intervals through an air exchanger, the purposes of preheating recovery and air preheating can be achieved. During the continuous production process, the heat exchange belongs to unstable heat transfer, and the waste gas temperature, the checkerwork temperature, and the preheating temperature of the gas all change periodically with time. Therefore, the refractory materials and steel structures of the regenerator are affected by the furnace pressure fluctuation caused by commutation, and the arch corner sealing part is impacted, which is prone to heat generation and fire leakage. The steel structure is roasted by high temperature, resulting in light leakage from the brick joints and deformation of the steel structure. Summary of the Invention

[0003] The purpose of the present invention is to provide a cooling device for the arch corner of a regenerator of a large-tonnage air kiln, which can effectively solve the problems in the background art.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is as follows: A cooling device for the arch corner of a regenerator of a large-tonnage air kiln includes a cooling air bag. The output end of the cooling air bag is fixedly installed with an external air duct. One end of the external air duct away from the cooling air bag is fixedly installed with an elbow pipe. One end of the elbow pipe away from the external air duct is fixedly installed with a shunt pipe. One end of the shunt pipe away from the elbow pipe is fixedly installed with a blind plate. A plurality of blowing mechanisms are arranged on one side of the shunt pipe. The blowing mechanism includes a sleeve. A blow pipe is movably installed in the sleeve. A plurality of push blocks are movably installed on the outer side of the sleeve, and the plurality of push blocks are symmetrically arranged on the outer side of the sleeve. A shaft seat is also fixedly installed on the sleeve between the two push blocks. An adjusting shaft is rotatably installed in the shaft seat. An expansion block is also movably installed between the two push blocks. A connecting plate is fixedly connected between the two expansion blocks.

[0005] As a further preferred solution of the present invention, adjusting grooves are opened on both sides of the sleeve. The trumpet-shaped adjusting grooves are opened to provide a space for angle adjustment of the blow pipe. A sleeve is also opened in the sleeve between the two adjusting grooves, and the sleeve can provide a rotation base point for the angle of the blow pipe.

[0006] As a further preferred embodiment of the present invention, an adjusting ball is fixedly installed on the outer side of the blowing pipe. One end of the blowing pipe is also fixedly installed with a connector, and the connector is connected to the output end on the outer side of the shunt pipe through a high-temperature resistant hose. The adjusting ball is rotatably installed in the ball groove, that is, the blowing pipe is rotatably installed in the sleeve through the adjusting ball, and the outer surface of the adjusting ball is coated with high-temperature resistant rubber. The connector is rotatably installed in the sleeve through the adjusting ball, and the high-temperature resistant rubber layer provided on the outer side of the sleeve can increase the rotational damping of the adjusting ball, ensure the angle limitation of the blowing pipe, adjust the jet angle of the blowing pipe, and enable the cold air to form a three-dimensional airflow distribution in the regenerator chamber.

[0007] As a further preferred embodiment of the present invention, screws are fixedly installed at both ends of the adjusting shaft, and snap rings are clamped on the adjusting shafts on both sides of the shaft seat. Screws are provided at both ends of the adjusting shaft, so that the two push blocks at the same horizontal position can move relatively or in opposite directions synchronously.

[0008] As a further preferred embodiment of the present invention, a threaded hole is formed in the push block, the outer side of the push block has a slope surface, and the threaded hole is threadedly connected to the screw.

[0009] As a further preferred embodiment of the present invention, one side of the expansion block relative to the push block has a slope surface and is in contact with the slope surface on the outer side of the push block. An installation groove is formed on the outer side of the expansion block.

[0010] As a further preferred embodiment of the present invention, a bottom shell is fixedly installed on one side of the connecting plate relative to the sleeve. A connecting screw is inserted into the bottom shell, and one end of the connecting screw is threadedly connected to the outer side of the sleeve. A gasket is inserted and connected between the two connecting screws. The two sides of the connecting plate are respectively inserted into the corresponding installation grooves and fixed by screws. Connecting the two expansion blocks through the connecting plate can enable the two expansion blocks to be lifted synchronously after being respectively pushed by the corresponding push blocks, so that the expansion blocks are in contact with the outer side of the connecting plate and are pressed into the installation holes of the refractory bricks on the inner side of the regenerator chamber of the kiln.

[0011] As a further preferred embodiment of the present invention, a compression spring is sleeved on the outer side of the connecting screw. One end of the compression spring abuts against the bottom of the gasket, and the other end of the compression spring abuts against the inner bottom of the bottom shell. The compression spring can enable the two push blocks to push the connecting plate towards the sleeve direction through the acting force of the compression spring after moving in opposite directions, so as to facilitate the removal of the sleeve from the installation hole of the refractory brick on the inner side of the regenerator chamber.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, an air source system is formed by an external air duct and a cooling air bag around the kiln, which provides a cooling air flow for the regenerator. It can effectively reduce the temperature of refractory materials and steel structures, reduce high-temperature thermal erosion, synchronously reduce the frequency of hot repairs by employees, extend the service life of equipment, and achieve energy conservation, consumption reduction and maintenance cost optimization while improving the operating safety of the kiln.

[0013] 2. In the present invention, the blowing pipe is rotatably installed in the sleeve through an adjusting ball, and the blowing angle can be adjusted according to the use requirements. The air flow injection at multiple angles can change the path of the mainstream air flow in the regenerator, avoiding the long-term concentrated scouring of a certain part by high-temperature flue gas. The injection of cold air at different angles can disperse the heat in the high-temperature area to the low-temperature area through the mixing and diffusion of the air flow, reduce the temperature gradient, make the overall temperature distribution more uniform, and cooperate with multiple groups of push blocks, adjusting shafts and expansion blocks outside the sleeve to achieve the rapid limit installation of the sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the main structure of the present invention; Figure 2 is a schematic diagram of the blowing mechanism structure of the present invention; Figure 3 is a sectional view of the blowing mechanism of the present invention; Figure 4 is Figure 2 an enlarged view of part A in Figure 5 is a schematic diagram of the split structure of the sleeve, expansion block and connecting plate of the present invention; Figure 6 is a schematic diagram of the sleeve structure of the present invention; Figure 7 is Figure 6 an enlarged view of part B in Figure 8 is a schematic diagram of the installation of the blowing mechanism of the present invention.

[0015] In the figure: 1. Cooling air bag; 2. External air duct; 3. Elbow pipe; 4. Shunt pipe; 5. Blind plate; 6. Blowing mechanism; 7. Sleeve; 8. Blowing pipe; 9. Connector; 10. Push block; 11. Axle seat; 12. Adjusting shaft; 13. Expansion block; 14. Connecting plate; 15. Adjusting groove; 16. Ball groove; 17. Adjusting ball; 18. Screw; 19. Screw hole; 20. Installation groove; 21. Bottom shell; 22. Connecting screw; 23. Gasket; 24. Compression spring. DETAILED DESCRIPTION OF THE INVENTION

[0016] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0017] Such as Figures 1-8As shown in the figure, a large-tonnage air kiln regenerator arch corner cooling device provided by the present invention includes a cooling air bag 1. The output end of the cooling air bag 1 is fixedly installed with an external air duct 2. One end of the external air duct 2 away from the cooling air bag 1 is fixedly installed with an elbow 3. One end of the elbow 3 away from the external air duct 2 is fixedly installed with a shunt pipe 4. One end of the shunt pipe 4 away from the elbow 3 is fixedly installed with a blind plate 5. Multiple air blowing mechanisms 6 are arranged on one side of the shunt pipe 4. The air blowing mechanism 6 includes a sleeve 7. A blow pipe 8 is movably installed in the sleeve 7. Multiple push blocks 10 are movably installed on the outer side of the sleeve 7, and the multiple push blocks 10 are symmetrically arranged on the outer side of the sleeve 7. A shaft seat 11 is also fixedly installed on the sleeve 7 between the two push blocks 10. An adjusting shaft 12 is rotatably installed in the shaft seat 11. An expansion block 13 is also movably installed between the two push blocks 10. A connecting plate 14 is fixedly connected between the two expansion blocks 13.

[0018] As Figures 2-3 shown, adjusting grooves 15 are opened on both sides of the sleeve 7. The trumpet-shaped adjusting grooves 15 are opened, which can provide a space for angle adjustment of the blow pipe 8. A sleeve 7 is also opened in the sleeve 7 between the two adjusting grooves 15. The sleeve 7 can provide a rotation base point for the angle of the blow pipe 8. An adjusting ball 17 is fixedly installed on the outer side of the blow pipe 8. A connecting head 9 is also fixedly installed at one end of the blow pipe 8. The connecting head 9 is connected to the output end on the outer side of the shunt pipe 4 through a high-temperature resistant hose. The adjusting ball 17 is rotatably installed in the ball groove 16, that is, the blow pipe 8 is rotatably installed in the sleeve 7 through the adjusting ball 17, and the outer surface of the adjusting ball 17 is coated with high-temperature resistant rubber. The connecting head 9 is rotatably installed in the sleeve 7 through the adjusting ball 17, and the high-temperature resistant rubber layer arranged on the outer side of the sleeve 7 can increase the rotation damping of the adjusting ball 17, ensuring the angle limitation of the blow pipe 8, and the jet angle of the blow pipe 8 can be adjusted, so that the cold air can form a three-dimensional airflow distribution in the regenerator.

[0019] As Figures 2-7As shown in the figure, screw rods 18 are fixedly installed at both ends of the adjusting shaft 12, and snap rings are installed on the adjusting shaft 12 on both sides of the shaft seat 11. Screw rods 18 are arranged at both ends of the adjusting shaft 12, so that the two push blocks 10 at the same horizontal position can move relatively or in the opposite direction synchronously. A threaded hole 19 is formed in the push block 10, and the outer side of the push block 10 has a slope surface, and the threaded hole 19 is threadedly connected with the screw rod 18. One side of the expansion block 13 relative to the push block 10 has a slope surface and contacts the slope surface on the outer side of the push block 10. An installation groove 20 is formed on the outer side of the expansion block 13. A bottom shell 21 is fixedly installed on one side of the connecting plate 14 relative to the sleeve 7. A connecting screw 22 is inserted into the bottom shell 21, and one end of the connecting screw 22 is threadedly connected to the outer side of the sleeve 7. A gasket 23 is inserted and connected between the two connecting screws 22. Both sides of the connecting plate 14 are respectively inserted into the corresponding installation grooves 20 and fixed by screws. Connecting the two expansion blocks 13 through the connecting plate 14 can make the two expansion blocks 13 lift synchronously after being pushed by the corresponding push blocks 10, so that the expansion blocks 13 contact and press against the inner side of the refractory brick installation hole in the regenerator of the kiln furnace. A compression spring 24 is sleeved on the outer side of the connecting screw 22. One end of the compression spring 24 abuts against the bottom of the gasket 23, and the other end of the compression spring 24 abuts against the inner bottom of the bottom shell 21. The compression spring 24 can enable the two push blocks 10 to move in the opposite direction and then push the connecting plate 14 towards the sleeve 7 through the acting force of the compression spring 24, facilitating the removal of the sleeve 7 from the installation hole of the inner side refractory brick in the regenerator.

[0020] It should be noted that the present invention is a large-tonnage air kiln furnace regenerator arch angle cooling device. When installing the sleeve 7, first insert the sleeve 7 into the installation hole of the inner side refractory brick in the regenerator. Subsequently, rotate two of the screw rods 18 respectively, so that the screw rods 18 drive the adjusting shaft 12 to rotate in the shaft seat 11. Synchronously, the screw rods 18 at both ends of the same adjusting shaft 12 also rotate in the threaded holes 19 of the corresponding push blocks 10 respectively, so that the two symmetrically arranged push blocks 10 move relatively on the outer side of the sleeve 7, and then the two push blocks 10 respectively push the expansion blocks 13 by using the slope surfaces on the outer sides and the slope surfaces on one side of the expansion blocks 13. Thus, the two expansion blocks 13 at the same horizontal position move away from the sleeve 7 synchronously under the push of the corresponding two push blocks 10, and then the two expansion blocks 13 drive the connecting plate 14 to move synchronously. At the same time, the connecting plate 14 drives the bottom shell 21 to move on the two connecting screws 22 and compress the compression spring 24 towards the gasket 23, providing conditions for pushing the expansion blocks 13 and the connecting plate 14 to reset when the sleeve 7 is disassembled later, so that multiple groups of expansion blocks 13 and the outer sides of the connecting plates 14 are synchronously pressed in the installation holes of the refractory bricks. Subsequently, rotate the screw rod 18 at one end of the remaining adjusting shaft 12, and the remaining expansion blocks 13 and the connecting plate 14 can be moved and pressed against the inner side of the installation hole of the refractory brick, completing the installation of the sleeve 7. When adjusting the blowing angle of the blowing pipe 8, only the end of the blowing pipe 8 with the connector 9 needs to be operated, so that the blowing pipe 8 rotates within the sleeve 7 with the adjusting ball 17 as the axis to adjust the angle. The high-temperature resistant rubber layer covering the adjusting ball 17 increases the rotational damping, enabling the blowing pipe 8 to be fixed at any angle. After the angle of the blowing pipe 8 is adjusted, the installation hole side of the refractory brick can be blocked by plugging. Then, the connector 9 can be connected to the corresponding output end on the outside of the shunt pipe 4 through a high-temperature resistant hose; During use, the cooling air bag 1 serves as the core of the air source. The stored cooling gas is transmitted through the external air duct 2 at the output end, enters the shunt pipe 4 after changing the air flow direction through the elbow pipe 3. The blind plate 5 at the end of the shunt pipe 4 can block the direct injection of the air flow. The gas from the cooling air bag 1 passes through the external air duct 2, the elbow pipe 3 to the shunt pipe 4, and is ejected from the blowing pipe 8. Since the angle of the blowing pipe 8 is adjustable, the cold air can be injected into the arch angle area from multiple angles, effectively reducing the temperature of the refractory material and the steel structure. The multi-angle air flow can also change the flow direction of the high-temperature flue gas in the regenerator chamber, disperse the heat in the high-temperature area, balance the temperature field, reduce the damage of thermal stress to the material, and at the same time slow down the chemical erosion of the high-temperature flue gas on the refractory material, extend the service life of the regenerator chamber, reduce the frequency of hot repairs by employees, and improve the operation safety and economy of the kiln furnace.

[0021] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A large-tonnage air kiln regenerator skewback cooling device, characterized in that: It includes a cooling air bag (1). The output end of the cooling air bag (1) is fixedly installed with an external air duct (2). One end of the external air duct (2) far from the cooling air bag (1) is fixedly installed with an elbow pipe (3). One end of the elbow pipe (3) far from the external air duct (2) is fixedly installed with a shunt pipe (4). One end of the shunt pipe (4) far from the elbow pipe (3) is fixedly installed with a blind plate (5). Multiple blowing mechanisms (6) are arranged on one side of the shunt pipe (4). The blowing mechanism (6) includes a sleeve (7). A blowing pipe (8) is movably installed in the sleeve (7). Multiple push blocks (10) are movably installed on the outer side of the sleeve (7), and the multiple push blocks (10) are symmetrically arranged on the outer side of the sleeve (7). A shaft seat (11) is also fixedly installed on the sleeve (7) between the two push blocks (10). An adjusting shaft (12) is rotatably installed in the shaft seat (11). An expansion block (13) is also movably installed between the two push blocks (10). A connecting plate (14) is fixedly connected between the two expansion blocks (13).

2. The large-tonnage air kiln regenerator skewback cooling device according to claim 1, wherein: Adjusting grooves (15) are formed on both sides of the sleeve (7). A sleeve (7) is also formed in the sleeve (7) between the two adjusting grooves (15).

3. A large-tonnage air kiln regenerator skewback cooling device according to claim 2, characterized in that: An adjusting ball (17) is fixedly installed on the outer side of the blowing pipe (8). A connecting head (9) is also fixedly installed at one end of the blowing pipe (8). The connecting head (9) is connected to the output end on the outer side of the shunt pipe (4) through a high-temperature resistant hose. The adjusting ball (17) is rotatably installed in a ball groove (16), that is, the blowing pipe (8) is rotatably installed in the sleeve (7) through the adjusting ball (17), and the outer surface of the adjusting ball (17) is coated with high-temperature resistant rubber.

4. The large-tonnage air kiln regenerator skewback cooling device according to claim 1, characterized in that: Screws (18) are respectively fixedly installed at both ends of the adjusting shaft (12), and snap rings are installed on the adjusting shaft (12) on both sides of the shaft seat (11).

5. A large-tonnage air kiln regenerator skewback cooling device according to claim 4, characterized in that: A threaded hole (19) is formed in the push block (10). The outer side of the push block (10) has a slope surface, and the threaded hole (19) is threadedly connected to the screw (18).

6. The large-tonnage air kiln regenerator arch corner cooling device according to claim 1, wherein: One side of the expansion block (13) relative to the push block (10) has a slope surface and is in contact with the slope surface on the outer side of the push block (10). An installation groove (20) is formed on the outer side of the expansion block (13).

7. The large-tonnage air kiln regenerator skewback cooling device according to claim 6, characterized in that: A bottom shell (21) is fixedly installed on one side of the connecting plate (14) relative to the sleeve (7). A connecting screw (22) is inserted into the bottom shell (21), and one end of the connecting screw (22) is threadedly connected to the outer side of the sleeve (7). A gasket (23) is inserted and connected between the two connecting screws (22). Both sides of the connecting plate (14) are respectively inserted into the corresponding installation grooves (20) and fixed by screws.

8. A large-tonnage air kiln regenerator skewback cooling device according to claim 7, characterized in that: A compression spring (24) is sleeved on the outer side of the connecting screw (22). One end of the compression spring (24) abuts against the bottom of the gasket (23), and the other end of the compression spring (24) abuts against the inner bottom of the bottom shell (21).

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