Rapid curing device of castable for kiln

Abstract

The utility model discloses a rapid curing device of castable for a kiln. The rapid curing device comprises a baking furnace and a flow guide mechanism, a curing chamber is arranged at the upper end of the baking oven, air inlets are formed in the front side and the rear side of the curing chamber, air return pipelines are fixedly connected to the upper ends of the air inlets, and an air bellow is fixedly connected between the upper ends of every two adjacent air return pipelines in the front-back direction; the flow guide mechanism comprises a first support, a first rotating shaft, a first fan blade, air cylinders, a second support, a second fan blade, a second rotating shaft and a flow guide assembly, the evenly-distributed air cylinders are fixedly connected to the top wall of the curing chamber, the upper ends of the air cylinders are fixedly connected with the lower surfaces of the vertically-adjacent air boxes correspondingly, and the upper ends of the air cylinders are fixedly connected with the first support; according to the rapid curing device for the castable for the kiln, hot air on the bottom wall is fed into the upper end of the curing chamber, so that the temperature difference between the upper end and the lower end of the curing chamber is reduced, and the quality of the cured castable is improved.

Description

Technical Field

[0001] This utility model relates to the field of curing technology for castables used in kilns, specifically a rapid curing device for castables used in kilns. Background Technology

[0002] Kiln castable is a high-performance monolithic refractory material mainly used for the lining construction and repair of high-temperature industrial kilns. It is composed of refractory aggregates such as bauxite, corundum, and mullite as a matrix, combined with binders such as aluminate cement and silica powder, and additives such as dispersants and accelerators. It is widely used in the transition zone of cement rotary kilns, permanent linings of steel ladles, and furnace roofs of heating furnaces, with a service life of 3-5 years, reducing joint heat loss by more than 15% compared to traditional refractory brick linings.

[0003] Refractories are typically poured into molds, where air is removed using a vibrator, and then left to cure. To accelerate curing, baking is often used. However, due to cost considerations, the baking rack containing the cured refractories mold is placed at the bottom of a baking oven, where firewood or coal is ignited for heating. But because the baking rack is high, the temperature decreases with distance from the heat source, resulting in different heating rates for refractories molds at different heights. The lower molds may overheat, causing the internal refractories to crack and affecting overall quality. Therefore, we propose a rapid curing device for refractories used in kilns. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a rapid curing device for castables for kilns. By sending hot air from the bottom wall into the upper part of the curing chamber, the temperature difference between the upper and lower ends of the curing chamber is reduced, thereby improving the quality of the castable after curing. This can effectively solve the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a rapid curing device for kiln castables, comprising a baking oven and a flow guiding mechanism;

[0006] Baking oven: It is equipped with a curing chamber at the top. Air inlets are provided on both the front and rear sides of the curing chamber. Return air ducts are fixedly connected to the upper ends of the air inlets. Air boxes are fixedly connected between the upper ends of two adjacent return air ducts.

[0007] The airflow guiding mechanism includes a support frame 1, a rotating shaft 1, a fan blade 1, an air duct, a support frame 2, a fan blade 2, a rotating shaft 2, and an airflow guiding component. The top wall of the curing chamber is fixedly connected to evenly distributed air ducts. The upper ends of the air ducts are fixedly connected to the lower surfaces of vertically adjacent air boxes. The upper ends of the air ducts are all fixedly connected to the support frame 1. The middle of the support frame 1 is rotatably connected to the rotating shaft 1. The lower end of the rotating shaft 1 is fixedly fitted with the fan blade 1. The lower end of the air ducts is all fixedly connected to the support frame 2. The lower end of the support frame 2 is rotatably connected to the rotating shaft 2. The middle of the rotating shaft 2 is fixedly fitted with the fan blade 2. The lower end of the rotating shaft 2 is equipped with an airflow guiding component. By sending hot air from the bottom wall into the upper end of the curing chamber, the temperature difference between the upper and lower ends of the curing chamber is reduced, thereby improving the quality of the cured refractory.

[0008] Furthermore, it also includes a control switch group, which is located on the left side of the baking oven. The input terminal of the control switch group is electrically connected to an external power source to control electrical appliances.

[0009] Furthermore, the flow guiding mechanism also includes a transmission assembly, which includes a bevel gear one, a bevel gear two, and a gearbox. The upper end of the bracket one is fixedly connected to the gearbox, the upper end of the rotating shaft one passes through the through hole in the bottom wall of the gearbox, and the upper end of the rotating shaft one is fixedly sleeved with bevel gear two. The upper ends of the air ducts are all rotatably connected to the transmission shafts through bearing seats, and the left end of each transmission shaft is fixedly sleeved with bevel gear one. Bevel gear one meshes with bevel gear two located in the same gearbox to realize the rotation of fan blade one.

[0010] Furthermore, the upper end of the curing chamber is fixedly connected to a uniformly distributed motor. The output shaft of the motor is fixedly connected to the adjacent transmission shaft on the left side through a coupling. The input end of the motor is electrically connected to the output end of the control switch group, which drives the transmission shaft to rotate.

[0011] Furthermore, the airflow guiding assembly also includes a turntable, a central airflow guide tube, and side airflow guide tubes. The lower end of each of the two rotating shafts is fixedly connected to a turntable, which is rotatably connected to the lower end of an adjacent air duct. The lower surface of each turntable is provided with a central airflow guide tube and a side airflow guide tube. Both the central airflow guide tube and the side airflow guide tube are offset from the center of the turntable, and the side airflow guide tubes are inclined to guide the hot airflow.

[0012] Furthermore, filters are fixedly connected to the inner side of each air inlet to filter smoke and dust.

[0013] Furthermore, air inlets are provided at the lower ends of both the front and rear sides of the curing chamber to draw in outside air.

[0014] Furthermore, a connecting platform is placed on the left side of the baking oven to facilitate the insertion of a rack into which the casting mold is placed.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This rapid curing device for castable refractory in kilns has the following advantages:

[0016] 1. When the motor drives the corresponding fan blades to rotate, the hot air at the bottom of the curing chamber is sent to the upper part of the curing chamber through the return air duct and the air box. At the same time, outside air is drawn in from the air inlet slot, which reduces the temperature at the bottom of the curing chamber and reduces the temperature difference between the upper and lower ends of the curing chamber. This makes the curing speed of the casting material at the upper and lower ends of the curing chamber more uniform, reduces the possibility of cracking after the casting material at the lower end is cured, and improves the quality.

[0017] 2. The downward flow of hot air drives the second fan blade to rotate, which in turn drives the turntable to rotate. The central guide tube and the side guide tubes revolve around each other, causing the hot air to flow to various positions at the top of the curing chamber, making the temperature in various positions inside the curing chamber more uniform and reducing temperature differences. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the curing chamber of this utility model;

[0020] Figure 3 This is a cross-sectional structural diagram of the flow guiding mechanism of this utility model.

[0021] In the diagram: 1 Baking oven, 2 Curing chamber, 3 Return air duct, 4 Air box, 5 Flow guiding mechanism, 51 Transmission assembly, 511 Bevel gear one, 512 Bevel gear two, 513 Gearbox, 52 Support one, 53 Rotating shaft one, 54 Fan blade one, 55 Air duct, 56 Support two, 57 Fan blade two, 58 Rotating shaft two, 59 Flow guiding assembly, 591 Turntable, 592 Central flow guide tube, 593 Side flow guide tube, 6 Filter screen, 7 Air inlet slot, 8 Connecting platform, 9 Control switch group, 10 Motor. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-3 This embodiment provides a technical solution: a rapid curing device for castables for kilns, including a baking oven 1 and a flow guiding mechanism 5;

[0024] Baking oven 1: It is equipped with a curing chamber 2 at the top. The curing chamber 2 is equipped with air inlets on both the front and rear sides. The upper end of each air inlet is fixedly connected to a return air duct 3. The upper ends of two adjacent return air ducts 3 are fixedly connected to a wind box 4. The inner side of each air inlet is fixedly connected to a filter screen 6. The lower ends of both the front and rear sides of the curing chamber 2 are provided with air inlet slots 7. A connecting platform 8 is placed on the left side of the baking oven 1. The frame containing the mold for casting kiln refractory is pushed into the interior of the curing chamber 2 through the connecting platform 8. After the curing chamber 2 is full, coal is poured into the baking oven 1 and ignited. The coal combustion generates heat to heat the interior of the curing chamber 2, achieving rapid curing.

[0025] The airflow guiding mechanism 5 includes a first support 52, a first rotating shaft 53, a first fan blade 54, an air duct 55, a second support 56, a second fan blade 57, a second rotating shaft 58, and an airflow guiding assembly 59. The top wall of the curing chamber 2 is fixedly connected to evenly distributed air ducts 55. The upper ends of the air ducts 55 are fixedly connected to the lower surfaces of vertically adjacent air boxes 4. Each air duct 55 has a first support 52 fixedly connected to its upper end. A first rotating shaft 53 is rotatably connected to the middle of each first support 52. A first fan blade 54 is fixedly fitted onto the lower end of each first rotating shaft 53. Each air duct 55 has a second support 56 fixedly connected to its lower end. A second rotating shaft 58 is rotatably connected to the lower end of each second support 56. A second fan blade 57 is fixedly fitted onto the middle of each second rotating shaft 58. An airflow guiding assembly is provided at the lower end of each second rotating shaft 58. 59. The flow guiding mechanism 5 also includes a transmission assembly 51, which includes a bevel gear 511, a bevel gear 512, and a gearbox 513. The upper end of the bracket 52 is fixedly connected to the gearbox 513. The upper end of the rotating shaft 53 passes through a through hole in the bottom wall of the gearbox 513. The upper end of the rotating shaft 53 is fixedly fitted with the bevel gear 512. The upper end of the air duct 55 is rotatably connected to a drive shaft through a bearing seat. The left end of each drive shaft is fixedly fitted with a bevel gear 511. The bevel gear 511 meshes with the bevel gear 512 located in the same gearbox 513. The upper end of the curing chamber 2 is fixedly connected to evenly distributed motors 10. The output shafts of the motors 10 are fixedly connected to the adjacent drive shafts on the left side through couplings. The input terminal of motor 10 is electrically connected to the output terminal of control switch group 9. The flow guiding assembly 59 also includes a turntable 591, a central flow guide tube 592, and a side flow guide tube 593. The lower end of the rotating shaft 58 is fixedly connected to the turntable 591. The turntable 591 is rotatably connected to the lower end of the adjacent air duct 55. The lower surface of the turntable 591 is provided with a central flow guide tube 592 and a side flow guide tube 593. The central flow guide tube 592 and the side flow guide tube 593 are offset from the center of the turntable 591. The side flow guide tube 593 is inclined. By controlling switch group 9, each motor 10 is turned on. The output shaft of motor 10 drives the adjacent transmission shaft and bevel gear 511 to rotate, which in turn drives the meshing bevel gear 512 to rotate, realizing the rotation of the rotating shaft 53 and the fan blade 54. The fan blade 54 rotates, sending the air inside the air box 4 into the curing chamber 2 through the air duct 55. Hot air is discharged from the central guide tube 592 and the side guide tube 593, creating a negative pressure environment in the air box 4. Hot air at the bottom of the curing chamber 2 is drawn into the air inlet and enters the air box 4 through the return air duct 3. The filter screen 6 filters out dust. At the same time, external air is drawn in through the air inlet slot 7, reducing the temperature at the bottom of the curing chamber 2. The hot air flows downward, driving the fan blade 57 to rotate. The rotating shaft 58 and the turntable 591 rotate, and the central guide tube 592 and the side guide tube 593 rotate. The central guide tube 592 drives the hot air to rotate at the center of the curing chamber 2, and the side guide tube 593 brings the hot air into the sides of the curing chamber 2, making the hot air distribution more uniform.

[0026] It also includes a control switch group 9, which is located on the left side of the baking oven 1, and the input terminal of the control switch group 9 is electrically connected to an external power supply.

[0027] The working principle of the rapid curing device for kiln castable provided by this utility model is as follows: A frame containing a mold for casting kiln castable is pushed into the curing chamber 2 via a connecting platform 8. After the curing chamber 2 is full, coal is poured into the baking oven 1 and ignited. The combustion of the coal generates heat, which heats the interior of the curing chamber 2, achieving rapid curing. At the same time, the control switch group 9 turns on each motor 10. The output shaft of the motor 10 drives the adjacent transmission shaft and bevel gear 511 to rotate, which in turn drives the meshing bevel gear 512 to rotate, thereby rotating the rotating shaft 53 and the fan blade 54. The rotation of the fan blade 54 draws air from the air box 4 through the air duct 5. 5. Hot air is sent into curing chamber 2. Hot air is discharged from the central guide tube 592 and the side guide tube 593. The air box 4 forms a negative pressure environment. Hot air at the bottom of curing chamber 2 is drawn into the air inlet and enters the air box 4 through the return air duct 3. The filter screen 6 filters the smoke and dust. At the same time, external air is drawn in through the air inlet slot 7, which reduces the temperature at the bottom of curing chamber 2. The hot air flows downward, driving the fan blade 57 to rotate. The rotating shaft 58 and the turntable 591 rotate. The central guide tube 592 and the side guide tube 593 rotate. The central guide tube 592 drives the hot air to rotate at the center of curing chamber 2. The side guide tube 593 brings the hot air into the side of curing chamber 2, making the hot air distribution more uniform.

[0028] It is worth noting that the motor 10 disclosed in the above embodiments can be a YE3 series three-phase asynchronous motor, and the control switch group 9 is provided with a switch button corresponding to the motor 10 for controlling its switching operation.

[0029] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A rapid curing device for kiln castables, characterized in that: Includes a baking oven (1) and a flow guiding mechanism (5); Baking oven (1): A curing chamber (2) is provided at its upper end. Air inlets are provided on both the front and rear sides of the curing chamber (2). Return air pipes (3) are fixedly connected to the upper ends of the air inlets. Air boxes (4) are fixedly connected between the upper ends of two adjacent return air pipes (3). The flow guiding mechanism (5) includes a support (52), a rotating shaft (53), a fan blade (54), a wind duct (55), a support (56), a fan blade (57), a rotating shaft (58), and a flow guiding assembly (59). The top wall of the curing chamber (2) is fixedly connected with evenly distributed wind ducts (55). The upper ends of the wind ducts (55) are fixedly connected to the lower surfaces of vertically adjacent air boxes (4). The upper ends of all wind ducts (55) are fixedly connected with… A bracket (52) is rotatably connected to a shaft (53) in the middle of the bracket (52). A fan blade (54) is fixedly fitted at the lower end of the shaft (53). A bracket (56) is fixedly connected to the lower end of the air duct (55). A shaft (58) is rotatably connected to the lower end of the bracket (56). A fan blade (57) is fixedly fitted at the middle of the shaft (58). A flow guide assembly (59) is provided at the lower end of the shaft (58).

2. The rapid curing device for kiln castables according to claim 1, characterized in that: It also includes a control switch group (9), which is located on the left side of the baking oven (1), and the input end of the control switch group (9) is electrically connected to an external power source.

3. The rapid curing device for kiln castables according to claim 2, characterized in that: The flow guiding mechanism (5) also includes a transmission assembly (51), which includes a bevel gear one (511), a bevel gear two (512), and a gearbox (513). The upper end of the bracket one (52) is fixedly connected to the gearbox (513). The upper end of the rotating shaft one (53) passes through the through hole in the bottom wall of the gearbox (513). The upper end of the rotating shaft one (53) is fixedly fitted with bevel gear two (512). The upper end of the air duct (55) is rotatably connected to the transmission shaft through the bearing seat. The left end of the transmission shaft is fixedly fitted with bevel gear one (511). The bevel gear one (511) is meshed with the bevel gear two (512) located in the same gearbox (513).

4. The rapid curing device for kiln castables according to claim 3, characterized in that: The upper end of the curing chamber (2) is fixedly connected to a uniformly distributed motor (10). The output shaft of the motor (10) is fixedly connected to the adjacent transmission shaft on the left side through a coupling. The input end of the motor (10) is electrically connected to the output end of the control switch group (9).

5. The rapid curing device for kiln castables according to claim 1, characterized in that: The flow guiding assembly (59) also includes a turntable (591), a central flow guide cylinder (592), and a side flow guide cylinder (593). The lower end of the rotating shaft (58) is fixedly connected to the turntable (591). The turntable (591) is rotatably connected to the lower end of the adjacent air duct (55). The lower surface of the turntable (591) is provided with a central flow guide cylinder (592) and a side flow guide cylinder (593). The central flow guide cylinder (592) and the side flow guide cylinder (593) are both offset from the center of the turntable (591), and the side flow guide cylinder (593) is inclined.

6. The rapid curing device for kiln castables according to claim 1, characterized in that: Each air inlet is fixedly connected to a filter screen (6).

7. The rapid curing device for kiln castables according to claim 1, characterized in that: Air inlet slots (7) are provided at the lower ends of both the front and rear sides of the curing chamber (2).

8. The rapid curing device for kiln castables according to claim 1, characterized in that: A connecting platform (8) is placed on the left side of the baking oven (1).

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