A rotary kiln soot blowing device

Abstract

The application relates to a soot blowing device of a rotary kiln and belongs to the technical field of soot blowing devices. The soot blowing device of the rotary kiln comprises a dropping pipe installed on a kiln cover, a feeder assembly connected with the lower side of the dropping pipe, a soot blowing pipe located at the bottom side of the feeder assembly, a fan system installed on the side of the feeder, and an air pipe connected with the fan system and communicated with the soot blowing pipe. The fly ash in the kiln cover falls into the feeder assembly through the dropping pipe, and the fan system works to blow the fly ash into the drying kiln through the soot blowing pipe. In addition, a manual flashboard valve, a corrugated compensator, a slag removal opening, a soot blowing bypass and the like are arranged. The application has the technical effects of effectively cleaning the fly ash in the rotary kiln, reasonably discharging the fly ash, guaranteeing the normal operation of the rotary kiln, and improving the production efficiency and product quality.

Description

Technical Field

[0001] This application relates to the field of soot blowing devices, and in particular to a soot blowing device for a rotary kiln. Background Technology

[0002] In modern industrial production, the primary method for treating hazardous waste is co-sintering it in high- and low-pressure kilns. Existing technology uses a drying kiln and a sintering kiln, respectively, with a kiln hood installed between them. The drying kiln removes moisture from the hazardous waste, and the dried waste is then fed into the sintering kiln for sintering through a conveyor pipe at the discharge port. The existing drying kiln is equipped with a negative pressure device to extract gas, creating a negative pressure environment. Since the drying kiln is connected to the sintering kiln, which is also under slight negative pressure, the fly ash generated after the hazardous waste sintering is drawn into the dust extraction port of the drying kiln through this negative pressure and then discharged.

[0003] However, existing sintering kilns generate a large amount of fly ash during the sintering process, which accumulates in the ash hoppers covering the kiln. The traditional method involves placing a two-cubic-meter iron box between the oil pipe channel and the ground. The fly ash from the ash hopper is drawn into the iron box, and once full, it is transported by forklift to the raw material mixing workshop for centralized processing. The disadvantages of this method are that it requires one person's labor and frequent forklift use. Additionally, dust easily accumulates around the iron box, causing air pollution in the workshop and affecting the operating environment.

[0004] Therefore, there is an urgent need to design a soot blowing device to reduce the transportation and handling of fly ash and reduce air pollution in the workshop. Utility Model Content

[0005] In order to reduce the transportation and handling of fly ash and reduce air pollution in the workshop, this application provides a soot blowing device for a rotary kiln.

[0006] The soot blowing device for a rotary kiln provided in this application adopts the following technical solution: A soot blowing device for a rotary kiln includes a material discharge pipe installed on the kiln hood, a feeder assembly fixedly connected to the lower side of the material discharge pipe, a soot blowing pipe fixedly connected to the bottom side of the feeder assembly, a fan system installed on the side of the feeder assembly and communicating with the soot blowing pipe, and an air pipe fixedly connected to the fan system and communicating with the soot blowing pipe; the two ends of the soot blowing pipe are respectively connected to the feeder assembly and the drying kiln.

[0007] By adopting the above technical solution, a drying kiln and a sintering kiln are set at both ends of the kiln hood, forming a complete production process. The drying kiln is equipped with a dust suction port and a discharge port. The dust suction port facilitates the discharge of fly ash, and the discharge port can be used to output materials to the sintering kiln. After the materials in the sintering kiln are sintered, the fly ash generated touches the wall of the kiln hood and falls into the feeder assembly through the drop pipe. The feeder assembly is equipped with a soot blowing pipe at the bottom, which is connected to the air pipe on the blower system. When the blower system works, it blows the fly ash into the drying kiln through the soot blowing pipe, realizing the cleaning and transportation of fly ash. Unlike the existing technology, it is no longer necessary to set up an iron box under the drying kiln to collect fly ash and then transport the iron box manually, which reduces labor costs and also reduces the pollution of fly ash to the environment.

[0008] Optionally, the feeder assembly includes a feeder body, a drive for driving the feeder body, and a sealing device mounted above the feeder body.

[0009] By adopting the above technical solution, a feeder assembly is set in the rotary kiln soot blowing device. The feeder assembly includes a feeder body, a drive, and a sealing device. The drive can drive the feeder body to operate, ensuring the material conveying function. The sealing device can prevent material leakage and improve the sealing and stability of the feeding process. At the same time, in conjunction with components such as the discharge pipe and the fan system installed on the kiln hood, the soot blowing function is realized, which allows the material to enter the soot blowing pipe from the discharge pipe through the feeder assembly and be blown into the drying kiln.

[0010] Optionally, a manual slide gate valve is also installed on the discharge pipe. The manual slide gate valve includes a valve body, a slide gate installed inside the valve body, and a handle for driving the slide gate to move.

[0011] By adopting the above technical solution, a manual slide gate valve is installed on the discharge pipe of the soot blowing device of the rotary kiln. The slide gate can be driven by the handle to move in the valve body, so as to realize the manual control of the material flow in the discharge pipe, which makes it easy to adjust the material flow or stop the material conveying according to the actual situation.

[0012] Optionally, a bellows compensator is installed on the manual slide gate valve.

[0013] By adopting the above technical solution, the soot blowing device includes a kiln hood, a drying kiln, a sintering kiln, a material discharge pipe, a feeder assembly, a soot blowing pipe, a blower system, and an air pipe, which can realize material conveying and soot blowing functions; the manual slide gate valve can control the opening and closing of the material discharge pipe; the corrugated compensator is installed on the manual slide gate valve, which can compensate for the displacement and deformation of the pipeline caused by thermal expansion and contraction, vibration and other factors, and ensure the stability and sealing of the pipeline system.

[0014] Optionally, the bellows compensator includes a bellows and flanges mounted on both sides of the bellows.

[0015] By adopting the above technical solution, the rotary kiln soot blowing device includes a kiln hood, a drying kiln, a sintering kiln, a material discharge pipe, a feeder assembly, a soot blowing pipe, a blower system, and an air pipe. A manual slide gate valve is installed on the material discharge pipe, and a bellows compensator is installed on the manual slide gate valve. The bellows compensator includes a bellows and flanges installed on both sides of the bellows. It can realize that the material can enter the soot blowing pipe from the kiln hood through the material discharge pipe and the feeder assembly and be blown into the drying kiln. The bellows of the bellows compensator can compensate for the displacement caused by thermal expansion and contraction of the pipeline, vibration, etc., and the flanges facilitate the connection and installation of the bellows compensator with other components.

[0016] Optionally, the outlet end of the soot blowing pipe corresponds to the dust suction port inside the drying kiln.

[0017] By adopting the above technical solution, the outlet end of the soot blowing pipe is aligned with the dust suction port inside the drying kiln, which can accurately blow dust to the dust suction port, making it easier to collect dust efficiently and improving the soot blowing effect of the rotary kiln soot blowing device.

[0018] Optionally, a conveying pipe is provided at the discharge port of the drying kiln, and the conveying pipe is inclined downward toward the sintering kiln.

[0019] By adopting the above technical solution, the discharge port of the drying kiln of the rotary kiln's soot blowing device is equipped with a conveying pipe that is inclined downwards towards the sintering kiln, which allows the material to be automatically conveyed from the drying kiln to the sintering kiln by gravity, thus improving the convenience and efficiency of material conveying.

[0020] Optionally, a slag removal port is provided on the bottom side of the feeder assembly.

[0021] By adopting the above technical solution, the control cabinet can control the soot blowing device, which is convenient for operation and management; a slag cleaning port is set on the bottom side of the feeder assembly, which can clean the residue in the feeder assembly and ensure the normal operation of the soot blowing device.

[0022] Optionally, a dust removal bypass is provided on the side of the discharge pipe, and a valve switch is installed on the dust removal bypass.

[0023] By adopting the above technical solution, a cleaning bypass is set on the side of the discharge pipe and a valve switch is installed. The valve switch can be opened when needed to clean the discharge pipe using the cleaning bypass, thereby avoiding blockage of the discharge pipe and ensuring the normal operation of the soot blowing device.

[0024] Optionally, an ash hopper is installed on the bottom side of the kiln hood, and the outlet of the ash hopper is connected to the material discharge pipe.

[0025] By adopting the above technical solution, installing an ash hopper on the bottom side of the kiln hood and connecting the ash hopper outlet to the discharge pipe can effectively collect the dust inside the kiln hood and guide the dust to the discharge pipe, facilitating subsequent dust treatment and ensuring the normal operation of the rotary kiln soot blowing device.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. The fly ash inside the kiln hood falls into the feeder assembly through the discharge pipe, and is then blown into the drying kiln by the blower system through the ash blowing pipe, avoiding manual cleaning and reducing labor intensity and safety risks; 2. The blower system provides power to effectively blow fly ash into the drying kiln, which can clean fly ash more thoroughly compared to simple dust collection equipment; 3. It saves on labor and forklift usage, thus reducing labor costs. Attached Figure Description

[0027] Figure 1 This is an overall structural diagram of an embodiment of this application.

[0028] Figure 2 This is a side view of an embodiment of this application.

[0029] Figure 3 This application Figure 2 A magnified view of region A in the middle.

[0030] Figure 4 This application Figure 2 A magnified view of region B in the middle.

[0031] Explanation of reference numerals in the attached drawings: 1. Kiln hood; 11. Drying kiln; 111. Dust suction port; 112. Discharge port; 1121. Conveying pipe; 12. Sintering kiln; 13. Drop pipe; 131. Ash removal bypass; 14. Ash hopper; 2. Feeder assembly; 21. Feeder body; 22. Transmission device; 23. Sealing device; 3. Fan system; 31. Air pipe; 4. Ash blowing pipe; 5. Manual slide valve; 51. Valve body; 52. Slide plate; 53. Handle; 6. Corrugated compensator; 61. Corrugated pipe; 62. Flange; 7. Slag removal port; 8. Control cabinet; 9. Platform. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0033] This application discloses a soot blowing device for a rotary kiln.

[0034] Reference Figure 1 As shown, a soot blowing device for a rotary kiln includes a discharge pipe 13 installed on the kiln hood 1, a feeder assembly 2 fixedly connected to the lower side of the discharge pipe 13, a soot blowing pipe 4 installed and connected to the bottom side of the feeder assembly 2, a fan system 3 installed on the side of the feeder assembly 2, and an air pipe 31 fixedly connected to the fan system 3 and connected to the soot blowing pipe 4. The fly ash in the kiln hood 1 falls into the feeder assembly 2 through the discharge pipe 13, and the fan system 3 is activated to blow the fly ash in the feeder assembly 2 into the drying kiln 11 through the soot blowing pipe 4.

[0035] Reference Figure 1 As shown, a drying kiln 11 and a sintering kiln 12 are provided at both ends of the kiln hood 1. The drying kiln 11 is provided with a dust suction port 111 and a discharge port 112. An inclined conveying pipe 1121 is provided on the discharge port 112. The conveying pipe 1121 is located inside the kiln hood 1, and the outlet end of the conveying pipe 1121 is located inside the sintering kiln 12. The material in the drying kiln 11 enters the sintering kiln 12 for sintering through the conveying pipe 1121.

[0036] Reference Figure 2 and Figure 3 As shown, the feeder assembly 2 includes a feeder body 21, a transmission 22 that drives the feeder body 21 to operate, and a sealing device 23 installed above the feeder body 21. The sealing device 23 stores the fallen fly ash and prevents fly ash leakage. The transmission 22 and the feeder body 21 are located below the sealing device 23. The transmission 22 is a geared motor used to drive the feeder body 21 to transport the fly ash in the sealing device 23 to the soot blowing pipe 4.

[0037] Reference Figure 2 and Figure 4 As shown, a manual slide gate valve 5 is installed on the feed pipe 13. A bellows compensator 6 is mounted on the manual slide gate valve 5 and connected and fixed to the feeder assembly 2. The manual slide gate valve 5 includes a valve body 51, a slide plate 52 installed inside the valve body 51, and a handle 53 for driving the slide plate 52. The valve body 51 is made of cast iron or cast steel, and the slide plate 52 is made of stainless steel to improve its corrosion resistance. At the same time, the operating handle 53 facilitates manual operation of the slide plate 52 and its opening and closing by the operator. The bellows compensator 6 is installed on the manual slide gate valve 5 to compensate for the displacement of the pipeline caused by thermal expansion and contraction or vibration. The bellows compensator 6 consists of a bellows 61 and a flange 62. The bellows 61 is usually made of stainless steel, which has good flexibility and corrosion resistance. The flange 62 is used to connect the bellows compensator 6 and the feeder assembly 2.

[0038] Reference Figure 2 As shown, the blower system 3 uses a Roots blower. The air pipe 31 installed on the blower system 3 is connected to the soot blowing pipe 4 at the bottom of the feeder assembly 2. The air generated by the blower system 3 is delivered into the soot blowing pipe 4 through the air pipe 31, which blows the fly ash in the soot blowing pipe 4.

[0039] The outlet end of the soot blowing pipe 4 is located inside the dust suction port 111 of the drying kiln 11, and the fly ash from the soot blowing pipe 4 is eventually fed into the dust suction port 111 and sucked away.

[0040] Reference Figure 1As shown, the slag removal port 7 is installed on the bottom side of the feeder assembly 2 and is used to clean excess residue inside the feeder assembly 2. The slag removal port 7 can be used in conjunction with tools such as scrapers to remove the residue inside the feeder assembly 2. The soot blowing device also includes a control cabinet 8, which is used to control the operation of the entire soot blowing device and realizes the automation of the entire soot blowing device.

[0041] A hopper 14, which is funnel-shaped, is installed at the bottom of the kiln hood 1. The hopper 14 is connected to the discharge pipe 13, allowing the fly ash to fall downwards and into the discharge pipe 13 more effectively. The kiln hood 1 is fixed on the platform 9 to ensure the stability of the entire device during operation.

[0042] The implementation principle of a soot blowing device for a rotary kiln in this application embodiment is as follows: through the cooperation of the material drop pipe 13, the feeder assembly 2, the soot blowing pipe 4 and the blower system 3, the efficient cleaning of fly ash inside the rotary kiln is achieved.

[0043] The fly ash generated during sintering in the sintering kiln 12 is drawn into the drying kiln 11 due to the negative pressure of the entire high and low kiln. However, some of the fly ash from the sintering kiln 12 will collide with the wall of the kiln shroud 1 and fall down when it is drawn into the drying kiln 11. The falling fly ash falls into the feed pipe 13 through the ash hopper 14. The manual slide valve 5 can control the opening or closing of the feed pipe 13, and the corrugated compensator 6 can compensate for the displacement of the pipe. The fly ash enters the feeder assembly 2 through the feed pipe 13, and the feeder assembly 2 conveys the fly ash to the soot blowing pipe 4. The blower transmits air power to the soot blowing pipe 4 through the air pipe 31, blowing the fly ash into the dust suction port 111 in the drying kiln 11. Because the drying kiln 11 is connected to a negative pressure device in the prior art, the drying kiln 11 is under negative pressure. The fly ash blown into the dust suction port 111 from the soot blowing pipe 4 will be discharged from the drying kiln 11. The slag removal port 7 can clean the residue inside the feeder assembly 2, the ash removal bypass 131 can clean the fly ash inside the discharge pipe 13 under special circumstances, the control cabinet 8 can control the operation of the entire device, and the mounting platform 9 can maintain the stability of the kiln hood 1. The entire device blows the generated fly ash into the drying kiln 11, eliminating the need for the existing iron box for storing the falling fly ash. This increases the space below, and the absence of an iron box prevents pollution to the surrounding environment, reduces air pollution in the workshop, avoids the safety risks of manual cleaning, and improves cleaning efficiency. At the same time, it improves resource utilization. The configuration of the slag removal port 7, ash removal bypass 131, control cabinet 8, and mounting platform 9 improves the stability and reliability of the device and reduces maintenance costs.

[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A soot blowing device for a rotary kiln, characterized in that, It includes a material drop pipe (13) installed on the kiln hood (1), a feeder assembly (2) fixedly connected to the lower side of the material drop pipe (13), a soot blowing pipe (4) fixedly connected to the bottom side of the feeder assembly (2), a fan system (3) installed on the side of the feeder assembly (2) and connected to the soot blowing pipe (4), and an air pipe (31) fixedly connected to the fan system (3) and connected to the soot blowing pipe (4); the two ends of the soot blowing pipe (4) are respectively connected to the feeder assembly (2) and the drying kiln (11).

2. The soot blowing device for a rotary kiln according to claim 1, characterized in that, The feeder assembly (2) includes a feeder body (21), a transmission device (22) for driving the feeder body (21) to operate, and a sealing device (23) installed above the feeder body (21).

3. The soot blowing device for a rotary kiln according to claim 1, characterized in that, The material discharge pipe (13) is also equipped with a manual slide valve (5), which includes a valve body (51), a slide plate (52) installed inside the valve body (51), and a handle (53) for driving the slide plate (52) to move.

4. The soot blowing device for a rotary kiln according to claim 3, characterized in that, A bellows compensator (6) is installed on the manual slide gate valve (5).

5. The soot blowing device for a rotary kiln according to claim 4, characterized in that, The bellows compensator (6) includes a bellows (61) and flanges (62) installed on both sides of the bellows (61).

6. The soot blowing device for a rotary kiln according to claim 1, characterized in that, The outlet end of the soot blowing pipe (4) corresponds to the dust suction port (111) inside the drying kiln (11).

7. The soot blowing device for a rotary kiln according to claim 1, characterized in that, A conveying pipe (1121) is provided on the discharge port (112) of the drying kiln (11), and the conveying pipe (1121) is inclined downward toward the sintering kiln (12).

8. The soot blowing device for a rotary kiln according to claim 2, characterized in that, The feeder assembly (2) has a slag removal port (7) on its bottom side.

9. A soot blowing device for a rotary kiln according to claim 1, characterized in that, A dust removal bypass (131) is provided on the side of the material discharge pipe (13), and a valve switch is installed on the dust removal bypass (131).

10. A soot blowing device for a rotary kiln according to claim 1, characterized in that, A hopper (14) is installed on the bottom side of the kiln hood (1), and the outlet of the hopper (14) is connected to the discharge pipe (13).

Images